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CR 10-123 Hennepin County All-Hazard Mitigation Plan00- 1 `: -- December 7" 2010 Council Report 2010 - 123 Hennepin County All -Hazard Mitigation Plan Proposed Action Staff recommends approval of the following motion: Move to Adopt Resolution No 2010-073, Approving Adoption of the Hennepin County All -Hazard Mitigation Plan Overview The Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan is a guide for all communities that have participated in the preparation of this plan. The municipalities that participated n the development of this plan include: Bloomington, Brooklyn Center, Brooklyn Park, Champlin, Corcoran, Crystal, Dayton, Deephaven, Eden Prairie, Edina, Excelsior, Golden Valley, Greenfield, Greenwood, Hanover, Hopkins, Independence, Long Lake, Loretto, Maple Grove, Maple Plain, Medicine Lake, Medina, Minneapolis, Minnetonka, Minnetonka Beach, Minnetrista, Mound, New Hope, Orono, Osseo, Plymouth, Richfield, Robbinsdale, Rogers, Shorewood, Spring Park, St. Anthony, St. Bonifacius, St. Louis Park, Tonka Bay, Wayzata and Woodland. The plan fulfills the requirements of the Federal Disaster Mitigation Act (DMA 2000) as administered by the Minnesota Department of Homeland Security and Emergency Management (HSEM) and the Federal Emergency Management Agency (FEMA). The scope of the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan is the municipalities and unincorporated areas within Hennepin County. The plan addressed all hazards deemed to threaten property and persons within the county. Both short and long-term mitigation strategies are addressed, implementation tasks assigned, and funding alternatives identified. Primary Issue to Consider • Compliance with Hennepin County Mitigation Plan Supporting Information • Resolution No 2010-073 • A Component Plan of the Comprehensive Emergency Management Program ( I I I )A " Dale Specken, Fire Chief Financial Impact: N/A Budgeted: Y/N N Source: • Related Documents (CIP, ERP, etc.): CITY OF HOPKINS HENNEPIN COUNTY, MINNESOTA RESOLUTION 2010 - 073 RESOLUTION APPROVING ADOPTION OF THE HENNEPIN COUNTY ALL -HAZARD MITIGATION PLAN WHEREAS, the City of Hopkins has participated in the hazard mitigation planning process as established under the Disaster Mitigation Act of 2000, and WHEREAS, the Act establishes a framework for the development of a multi jurisdictional County Hazard Mitigation Plan; and WHEREAS, the Act as part of the planning process requires public involvement and local coordination among neighboring local units of government and businesses; and WHEREAS, the Hennepin County Plan includes a risk assessment including past hazards, hazards that threaten the County, an estimate of structures at risk, a general description of land uses and development trends; and WHEREAS, the Hennepin County Plan includes a mitigation strategy including goals and objectives and an action plan identifying specific mitigation projects and costs; and • WHEREAS, the Hennepin County Plan includes a maintenance or implementation process including plan updates, integration of the plan into other planning documents and how Hennepin County will maintain public participation and coordination; and • WHEREAS, the Plan has been shared with the Minnesota Division of Homeland Security and Emergency Management and the Federal Emergency Management Agency for review and comment; and WHEREAS, the Hennepin County All -Hazard Mitigation Plan will make the county and participating jurisdictions eligible to receive FEMA hazard mitigation assistance grants; and WHEREAS, this is a multi jurisdictional Plan and cities that participated in the planning process may choose to also adopt the County Plan. Adopted by the City Council this 7th day of December, 2010. ATTEST: Terry Obermaier, City Clerk Eugene Maxwell, Mayor ",Hennepin A Component Plan of the Comprehensive Emergency Management Program Hennepin County, Minnesota Final November 16, 2010 O STATE OF MINNESOTA COUNTY OF HENNEPIN CLERK OF THE BOARD I, Deputy Clerk of the Board of the above named County, do hereby certify that I have compared the papers writing, to which this certificate is attached, with the original Resolution No. 10-0488, adopted by the County Board of Commissioners on November 16, 2010 as the same appears of record and on file in the said Clerk of the Board's office, at the Government Center in said Hennepin County, and find the same to be true and correct copy thereof. IN TESTOMONY WHEREOF, I have hereunto set my hand and affixed the seal of said County at the City of Minneapolis, this 18th day of November A.D. 2010 YOLANDA C. MC CRARY Deputy Clerk of the Board by: QASAgenda\State of MiN.Certification Form.doc u Hennepin County, Minnesota RESOLUTION NO. 10-0488 [2010] WmAchennepin.us The following Resolution was offered by Public Works, Energy & Environment Committee: BE IT RESOLVED, That the Hennepin County Board of Commissioners approve the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan, as on file with the Clerk of the Board; that the Chair of the Board be authorized to sign the Plan on behalf of Hennepin County; and that staff be directed to submit the adopted Plan to the Minnesota Division of Homeland Security & Emergency Management. The question was on the adoption of the resolution and there were 6 YEAS and 0 NAYS, as follows: County of Hennepin Board of County Commissioners YEAS NAYS ABSTAIN ABSENT Mike Opat X Mark Stenglein X Gail Dorfman X • Peter McLaughlin X Randy Johnson X Jan Callison X Jeff Johnson X RESOLUTION ADOPTED ON 11116/2010 ATTEST: • Deputy/Clerk to the County Board 1 Generated 11/17/2010 10:41:37 AM Hennepin County mmgatlon Plan Introduction SEGTION 1 Hennepin County INTRODUCTION 0 • • Mitigation Plan Introduction Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan Table of Contents Section 1: Introduction 1.1 Executive Summary 1.1.1 About the Plan 1.1.2 Scope 1.1.3 Authority 1.1.4 Funding 1.1.5 Purpose 1.2 Community Profile Section 2: The Planning Process 2.1 Hennepin County Working Group 2.2 Hennepin County Planning Team 2.3 Jurisdiction Participation 2.4 Additional Planning Input 2.5 Public Involvement Section 3: Risk Assessment 3.1 Risk Assessment Process 3.1.1 Identifying Hazards 3.1.2 Eliminated Hazards 3.1.3 Profiling Hazards 3.1.4 Inventory Assets 3.1.5 Estimate Losses (results forthcoming) 3.1.6 Hazard Profiles 3.1.7 Summary—Impact of Hazards 3.2 Hazard Profiles 3.2.1 Dams 3.2.2 Drought 3.2.3 Earthquakes 3.2.4 Extreme Temperatures 3.2.5 Flooding 3.2.6 Hazardous Materials 3.2.7 Infectious Diseases 3.2.8 Radiological 3.2.9 Terrorism 3.2.10 Thunderstorms Page 3 Page 3 Page 3 Page 3 Page 3 Page 3-5 Page 6-33 Page 34 Page 34 Page 34-35 Page 36 Page 36-37 Page 38 Page 38-41 Page 42 Page 43-44 Page 44 Page 45 Page 45 Page 45-46 Page 46-134 Page 47-50 Page 51-56 Page 57-59 Page 60-67 Page 68-73 Page 74-83 Page 84-88 Page 89-93 Page 94-95 Page 96-105 Page 1 Mitigation Plan Introduction 3.2.11 Tornado Page 106-110 3.2.12 Transportation Page 111-125 3.2.13 Winter Storms Page 126-134 Section 4: Vulnerability Assessment 4.1 Vulnerability Assessment Page 135-168 4.1.1 Inventory Assets Page 135-155 4.2 Future Land Use -Development Trends Page 156-159 4.3 Assessing Future Vulnerability Page 160-161 4.4 Repetitive Loss Structures Page 162 4.5 Capability Assessment Page 163-168 Section 5: Mitigation Strategies 5.1 Mitigation Goals Objectives, Strategies Page 169-196 5.1.1 2004 Mitigation Goals Page 169-175 5.2 2010 Mitigation Actions Page 176-185 5.3 Cost Benefit Review Page 176 5.4 Participation in the NFIP Page 177-179 5.5 Continued Participation in the NFIP Page 180-181 5.6 Mitigation Action Items Page 185-196 Section 6: Plan Maintenance 6.1 Plan Maintenance Page 197-200 6.1.1 Monitoring, Evaluating, and Updating Page 197 The plan 6.1.2 Plan Monitoring Page 197 6.1.3 Plan Evaluation Page 197-198 6.1.4 Plan Updates Page 198 6.1.5 Implementation through Existing Programs Page 198-199 6.1.6 Continued Public Involvement Page 199-200 Section 7: Plan Review Crosswalk Page 2 Mitigation Plan Introduction • 1.1 Executive Summary Mission: To idents measures that will prevent loss of life and damage to property while reduc- ing future risks in Hennepin County. 1.1.1 About the Plan The Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan is a guide for all com- munities that have participated in the preparation of this plan. The municipalities that partici- pated in the development of this plan include: Bloomington, Brooklyn Center, Brooklyn Park, Champlin, Corcoran, Crystal, Dayton, Deephaven, Eden Prairie, Edina, Excelsior, Golden Val- ley, Greenfield, Greenwood, Hanover, Hopkins, Independence, Long Lake, Loretto, Maple Grove, Maple Plain, Medicine Lake, Medina, Minneapolis, Minnetonka, Minnetonka Beach, Minnetrista, Mound, New Hope, Orono, Osseo, Plymouth, Richfield, Robbinsdale, Rogers, Shorewood, Spring Park, St. Anthony, St. Bonifacius, St. Louis Park, Tonka Bay, Wayzata and Woodland. The plan fulfills the requirements of the Federal Disaster Mitigation Act (DMA 2000) as administered by the Minnesota Department of Homeland Security and Emergency Management (HSEM) and the Federal Emergency Management Agency (FEMA). 1.1.2 Scope • The scope of the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan is the mu- nicipalities and unincorporated areas within Hennepin County. The plan addressed all hazards deemed to threaten property and persons within the county. Both short and long-term mitiga- tion strategies are addressed, implementation tasks assigned, and funding alternatives identified. 1.1.3 Authority Section 409 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act (Public Law 93-288, as amended), Title 44 CFR, as amended by Section 102 of the Disaster Mitigation Act of 2000, provides the framework for state and local governments to evaluate and mitigate all natural hazards as a condition for receiving Federal disaster assistance. A major requirement of the law is the development of a local natural hazard mitigation plan. 1.1.4 Funding The Minnesota Department of Homeland Security and Emergency Management awarded a $109,875 Pre -Disaster Mitigation Grant to Hennepin County for the preparation of this plan in November of 2009. 1.1.5 Purpose Hazard mitigation is any action taken to permanently reduce or eliminate long-term risks to people and their property from the effects of hazards. Natural hazards come in many forms in- cluding: tornadoes, floods, severe storms, drought, earthquakes, winter storms, or dam failures • resulting from natural disaster crises. Communities can take steps to prepare and implement mitigation techniques for almost any type of hazard that may threaten its citizens, businesses Page 3 Mitigation Plan Introduction and institutions. Hazard mitigation plans can identify a range of structural approaches to lower the costs of fu- ture disasters by meeting the unique needs of the community. For example, structural mitiga- tion projects could include the design of new buildings, roads, dams, and other infrastructure and the strengthening and retrofitting of old struc- tures. Mitigation strategies can also involve non- structural initiatives, such as educational programs to inform the community about the risks the public and its property faces in order to encourage them to purchase flood insurance or educate themselves on severe weather awareness. Non-structural mitiga- tion programs can also include developing and en- forcing regulations to prevent construction in haz- ard areas, or to ensure that development that does occur will be resistant to the hazards threatening the area. -above ro year nx vel Elevating electrical boxes is a form of a Non- structural mitigation measures. Mitigation programs and projects serve to lessen a community's vulner, and costs of disasters. The implementation of mitigation programs is a achieving a sustainable community, on in which the economic and social needs of people, businesses, and institutions coexists with natu- ral environment constraints and are protected from the disruptions and impacts of emergencies and disasters. Hazard mitigation planning must be closely coordinated with a community's overall planning and development efforts. The most effective way for a community to ini- tiate this objective is through a comprehensive local mitigation plan- ning program, as presented here. Comprehensive planning can pro- vide Hennepin County citizens a safe, health and prosperous place in which to live and work. Lbility to the hardships <ey component to 1 The purpose of the Hennepin County Multi -Jurisdictional All -Hazards r Mitigation Plan is to develop a unified approach among its local gov- Windstorm Mitigation ernment for dealing with identified natural hazards and hazard man- Manual is an example of a agement problems. The process followed a methodology prescribed source for structural miti- by FEMA. It began with the formation of a Mitigation Planning gation measures. Team comprised of key County, city, and stakeholder representatives. The planning process examined the recorded history of losses from natural hazards, and analyzed future risks posed to the county by these hazards. Hennepin County is vulnerable to several natural hazards that are identified, profiled, and ana- lyzed in the plan. The plan puts forth several mitigation goals and objectives that are based on the results of the risk assessment. To meet identified goals and objectives, the plan also in- cludes specific recommendations for actions that can mitigate future disaster losses. This plan Page 4 011 � 1 1 The purpose of the Hennepin County Multi -Jurisdictional All -Hazards r Mitigation Plan is to develop a unified approach among its local gov- Windstorm Mitigation ernment for dealing with identified natural hazards and hazard man- Manual is an example of a agement problems. The process followed a methodology prescribed source for structural miti- by FEMA. It began with the formation of a Mitigation Planning gation measures. Team comprised of key County, city, and stakeholder representatives. The planning process examined the recorded history of losses from natural hazards, and analyzed future risks posed to the county by these hazards. Hennepin County is vulnerable to several natural hazards that are identified, profiled, and ana- lyzed in the plan. The plan puts forth several mitigation goals and objectives that are based on the results of the risk assessment. To meet identified goals and objectives, the plan also in- cludes specific recommendations for actions that can mitigate future disaster losses. This plan Page 4 011 Mitigation Pian Introduction tohas been formally adopted by each participating entity and is required to be updated a minimum of every five years. This plan serves as a guide for local governments in their ongoing efforts to reduce vulnerabil- ity to the impacts produced by natural hazards. Further, this plan seeks to accomplish the fol- lowing additional purposes: • Establish an ongoing natural hazard mitigation program; • Identify and assess the natural hazards that pose a threat to life and property; • Evaluate additional mitigation measures that should be undertaken; and; • Outline procedures for monitoring the implementation of mitigation strategies. 0 Page 5 Hennepin County Mitigation Plan Introduction 1101 epCounty COMMUNITY PROFILE • 0 Mitigation Plan Introduction 1.2 Community Profile Hennepin County Hennepin County was established by the territorial legislature of Minnesota in 1852, six years before Minnesota became a state. The County was formally organized on the 21 st of October, 1852. Eleven days previous, an election was held at the house of John H. Stevens at which sev- enty-three votes were polled, representing about one-half of the voters residing in the county. Another voting place was fixed in Mendota, for the accommodation of those living along the Minnesota River. Previous to the election a mass meeting was held, at which the following ticket was nominated, irrespective of party: Dr. A.E. Ames, Representative; Alexander Moore, John Jackins and Joseph Dean, County Commissioners; John T. Mann, County Treasurer; John H. Stevens, register of deeds; Warren Bristol, district attorney; Tssac Brown, sheriff; David Gorham, coroner; Joel B. Basset, judge of probate; Charles W. Christmas, county surveyor; Edwin Hedderly, Eli Pettijohn, S.A. Goodrich, assessors; George Parks, road commissioner. The entire ticket was elected without opposition and the parties named became the first officers of Hennepin County. The first meeting of the board of county commissioners was held on the 21 st of October and Alexander was chosen chairman. Father Louis Hennepin's name was cho- sen as he originally named Saint Anthony Falls and recorded some of the earliest accounts of the area for the Western world. The name Snel- _ F1\ ling was inserted in the original bill for orga- nizing the county by John H. Stevens, by whom it was drafted; by the suggestion and strong support of Hon. Martin McLeod, the name Snelling was struck out and Hennepin inserted. Hennepin County's early history is closely linked to the establishment of the cities of Minneapolis and St. Anthony. Geography Hennepin County is located within the Twin Cities Metropolitan Area. The upper Missis- sippi River flows through Minneapolis and de- fines the northeastern boundary of the county. The Minnesota River runs across the south end W, -A kS DtiY1011 \ HASSAN 1YVSP. /1t1'II'I OSSEO 1 �.ONc nRAK YGPLI �.k OYL BROOKLYN PARK 'p -Z NROONCENTERIYN LORTTTO �CRYSML NC W' IIOPF' ULIAHA ROBONiDALE IIIUEPENBENCE, 1111411111HSi. (rll i ii MAPLk WWI IN PL AIN rAKL,.(,LBEN I.M.AKL 10111 EY ORONO 11111:.A MNNI '�4� f JB1 AND IANNETfNIK A MNNETOMA a_IimR rAl<H 41NNEIRISTA BLAQI BECPIIAWN NUUNb IIOPNINI LANKA ' .. k��xll A1:I11S SAN.RFFNNn:ION I WOREWOOTkdL USII-P IUINA NW RICNTIEtD T•IRPORT t1. r D r N PRA1Rr BLOOMINGTON of the county while the Crow River makes up the northwest side. Hennepin County is com- prised of 45 cities, one township, and one unorganized territory. The county encompasses 611 square miles with 200 lakes larger than 10 acres and numerous parks and trails providing rec- reational opportunities and community amenities to residents. Page 6 Mitigation Plan Introduction Demographics .•7 Page 7 (PopulationCity Rank) Bloomington (2) 0-17 20,945 18-65 47,228 65+ 12,696 Total 80,869 County 7.09% Brooklyn Center 8,704 14,452 4,215 27,371 2.40% Brooklyn Park (4) 25,819 40,226 3,927 69,972 6.13% Champlin 7,996 13,382 815 22,193 1.95% Corcoran 2,006 3,369 255 5,630 0.49% Crystal 5,544 13,950 3,204 22,698 1.99% Dalton 1,571 2,906 222 4,699 0.41% Dee haven 1,246 2,191 416 3,853 0.34% Eden Prairie (5) 25,783 32,183 2,986 60,952 5.34% Edina 12,821 22,200 10,284 45,305 3.97% Excelsior 522 1,504 367 2,393 021 % Fort Snelling 0 166 276 442 0.04% Golden Valley 4,448 11,109 3,978 20,281 1.78% Greenfield 920 1,527 97 2,544 0.22% Greenwood 195 464 70 729 0.06% Hanover 487 805 63 1,355 0.12% Hassan Township 871 1,484 108 2,463 0.229% Hopkins 3,651 11,011 2,483 17,145 1.50% Independence 1,042 1,929 265 3,236 0.28% Long Lake 503 1,132 207 1,842 0.16% Loretto 180 329 61 570 0.05% Maple Grove 23,143 34,957 2,484 60,584 5.31% Maple Plain 662 1,193 233 2,088 0.18% Medicine Lake 85 244 39 368 0.03% Medina 1,374 2,353 277 4,005 0.35/0 Minneapolis (1) 106,630 232,275 33,928 372,833 32.68% Minnetonka 14,179 28,760 6,989 49,928 4.38% (Minnetonka Beach 198 358 58 614 0.05% Minnetrista 1,374 2,665 321 4,358 0.38% Mound 2,446 6,144 845 9,435 0.83% New Hoe 4,860 12,308 3,705 20,873 1.83% Orono 2,212 4,650 676 7,538 0.66% Osseo 535 1,373 526 2,434 0.21% Plymouth (3) 23,905 40,869 5,328 70,102 6.14% Richfield 8,715 19,092 5,455 33,262 2.92% Robbinsdale 3,339 8,307 2,477 14,123 1.24% Rockford 1,191 2,127 166 3,484 0.31% Rogers 1,253 2,146 189 3,588 0.31% Saint Anthony1,572 4,431 2,009 8,012 0.70% Saint Bonifacius 573 1,179 121 1,873 0.16% Saint Louis Park 8,916 28,702 6,478 44,126 3.87% Shorewood 2,471 4,343 586 7,400 0.65% Spring Park 182 987 548 1,717 0.15% Tonka Bay 412 928 207 1,547 0.14% Wa _ata 859 2,397 857 4,113 0.36% Woodland 149 274 57 480 0.04% County Total 273,025 551.321 99,901 1.140.980 100% Page 7 Mitigation Plan Introduction 0 Demographics (continued) With an estimated population of 1.1 million people, Hennepin County is the largest county in Minnesota. The county has added new residents over the last 15 years and population projec- tions forecast more growth. One-third of the county's population (373,943) lives in Minneapo- lis with the remaining 746,954 residing in suburban Hennepin County. Both the city and subur- ban populations are growing, with the outer ring suburbs growing at the fastest rate. More than one-fifth (22 percent) of the state's population live in Hennepin county. Hennepin is one of the most racially and ethnically diverse communities in the state with more than 257,000 residents identifying themselves as non-white or Latino. More than 40 percent of the state's non-white population and over 46 percent of the state's foreign -born population lives in Henne- pin county. Over the last ten years the county has seen especially large increases in people from Africa and Latin America. Total 1,130,110 White Alone 884,272 Black or African American alone 115,779 • American Indian and Alaska native alone 8,255 Asian alone 61,050 Native Hawaiian and Other Pacific Islander alone 234 • Some other race alone 33,832 Two ore more races: 26,688 Two races including Some other race 2,155 Two races excluding Some other race, and three or more races 24,533 Source: U.S. Census Bureau, 2005-2007 American Community Survey The following maps provide a visual of the ethnic diversity of Hennepin County and what com- munities of the county different ethnic backgrounds reside in. Included in these maps are Afri- can American, Asian, Caucasian, Hispanic, Native American, and Pacific Islander. Page 8 Mitigation Plan Introduction w Demographics African American Demographics U Page 9 • 40 is Mitigation Plan Introduction CS Asian Demographics Page 10 Mitigation Plan Introduction Caucasian Demographics 0.39 persons 43. 12) persons f 121. 297 persons - 298. 638 persons - 639+ persons ` I t vL� i may rj L Caucasian Demographics Page 11 • 0 n u Mitigation Plan Introduction phics Hispanic Demographics Page 12 Mitigation Plan Introduction I emogi a I) hics Native American Demographics Page 13 • • Mitigation Plan Introduction moglaphics Pacific Islander Demographics Page 14 Mitigation Plan Introduction Economy Hennepin County remains one of the wealthiest counties in Minnesota with an average per cap- ita income of $31,000 and median family income of $75,000 compared to a statewide median family income of $62,500. Despite the economic success of most Hennepin County residents, approximately 9 percent of the population - almost 100,000 people had income during 2004 at or below the poverty line. An even greater percentage of children, just over 11 percent, were in families with incomes at or below poverty. It is estimated that almost one in five (19.8 percent) of single female headed households with children under 18 years of age earned income at or below the poverty line. From 1999 to 2006, only two racial groups in Hennepin County with data available from the Census Bureau showed increases in the percent of individuals in poverty; Black/African Ameri- cans increased from 26.6 percent in poverty in 1999 to 34.6 percent in 2006 while whites in- creased from 4.5 percent in poverty in 1999 to 6.5 percent in 2006. Racial disparities in poverty and per capita income can be partially explained by racial/ethnic differences in factors such as family types, income distribution, and a number of children per family. While not an exhaus- tive list, some recent examples from Hennepin County that could affect poverty status or per capita income across racial/ethnic groups include: in 2006 a higher proportion of Hennepin County's American Indian and Black/African American families were single female parent families than white, Latino, and Asian families, while income distribution varied widely across racial/ethnic groups in 2000, income inequality was highest in Hennepin County Black/African American households, and in 2000, Asian families in Hennepin County had the largest average family size (4.2), while white families had the smallest (2.9). One of the contributors to economic success in the region is the highly educated workforce. High school graduation rates continue to be above 90 percent for Hennepin County residents. These results vary drastically, however, among location and socioeconomic status. Poverty and Income by Race and Ethnicity Figure 5. Percent in poverty and per capita income by race/ethnicity, Hennepin County, 2006 Individuals below poverty by race/ethnicity Asian Nac k or Africa n Arrencan Latino White (non - Latino) All races and et hnlcit ies 50% 40% 30% 20% __ 0% Percent of individuals below poverty Source: U.S. Census Bureau Per capita incorre by race,lethnicity �dWY11YIfI133 709 H $0 610,000 520,000 530,000 540,000 550,000 Per capita income Page 15 HP is n U Mitigation Plan Introduction me Distribution 2007 Hennepin County Household Income Distribution by Jurisdiction Page 16 Mitigation Plan Introduction Hennepin County Income Distribution - 2007 25.0% w 20.0% d :0 15.0% N pp p � 10.0% w 0 5.0% .:. 0.0% 1•W Less than $10,000 Business Climate 20.7% 14.7% 14.2%13.0% 9.3%10.0°/ L4.01%3.5%_ $25,000- $75,000- Greater $34,999 $99,999 than $200,000 Income ■ Less than $10,000 ■ $10,000-$14,999 © $15,000-$24,999 o $25,000-$34,999 ■ $35,000-$49,999 © $50,000-$74,999 ■ $75,000-$99,999 o $100,000-$149,999 ■ $150,000-$199,999 ■ Greater than $200,000 Hennepin County is home to many of Minnesota's largest employers including Target Corpora- tion, UnitedHealth Group, University of Minnesota, Cargill, Best Buy Company, SuperValu, US Bank and General Mills. Seven of the top ten revenue gen- erating companies of 2005 are headquartered in the County. ' Along with a strong employer base, Hennepin County residents form a well-educated and professional workforce. Over 87 per- cent of Hennepin County's workforce is employed in the service sector with over 57 percent concentrated in three industry classi- fications: Trade, Transportation and Utilities (21 percent), Pro- fessional and Business services (18 percent). Approximately 10.5 percent of the workforce is employed in manufacturing jobs. Hennepin County's unemployment rate is consistently below national and state rates. In 2004, the average unemployment rate within the county was 4.5 percent. Land Cover General Mills Headquarters, Golden Valley, Minnesota Hennepin County's land cover is broken down into the following categories: artificial surfaces and associated areas, planted or cultivated vegetation, forests, woodlands, shrublands, herbaceu- ous, nonvascular vegetation, sparse vegetation, and water. The following map shows a visual of the land cover across Hennepin County. Page 17 He Mitigation Plan Introduction 2007 Hennepin County Land Cover 0 Page 18 MLCCS Inventory Not Completed Yet T Artificial Surfaces and Associated Areas �• - �r� i. Planted or Cultivated Vegetation hA ..,_� -- t�'� •..�,�.-!rr L- -Forests Woodlands • `` - may.#�' t - Shrublands Herbaceous Nonvascular Vegetation .� s. % -4+ ,,x• •• I� '��.�� -r,i .r-'.';. - Sparse Vegetation - Water �► a A ' ti 'Ltd '144 V 1 F - 2007 Hennepin County Land Cover 0 Page 18 Mitigation Plan Introduction Watersheds A watershed is an area of land that catches rain and snow (any form of water) and drains to a lake, stream, wetland or groundwater. In Hennepin County we have 12 major watersheds. Wa- tersheds come in all different shapes and sizes. Smaller watersheds drain into larger water- sheds, much like a creek drains into a river. Some watersheds cross county, state, and even in- ternational borders. 1 r I � ---- i WEST ELM CREEK r, .,i MISSISSIPPI it ..ti RIVER i Jr 1 ti SHINGLE CREEK + j PIONEER -SARAH CREEK 1 '-1-r_ t -a J '1 L_l ", r- V i E I -z: ---{ ! BASSETT CREEK F `` MIDDLE 1' 5 h'1ISSISSIPPI Y" RIVER i i �P P4INNEHAHACREEK_ �`i --- �t ! 1 ------------------- NINE IVIILE CREEK RILEY PURGATORY- RICHFIELD - BLUFF CREEK Y BLOOMINGTON LOWER MINNESOTA RIVER 12 Hennepin County Watersheds Page 19 W_n Mitigation Plan Introduction • Local Jurisdictions Bloomington Bloomington is the fifth largest city in Minnesota. Located on the north bank of the Minnesota River above its confluence with the Mississippi River, Bloomington lies at the heart of the southern metro area, 10 miles (16 km) south of downtown Minneapolis. The city's population was 85,172 in the 2000 Census and was estimated at 80,869 in 2006. Bloomington was established as a Post -World War II housing boom suburb connected to the urban street grid of Minneapolis and serviced by two major highways, Interstate 35W and Inter- state 494. Bloomington's residential areas include upper -tier households in the western Bush Lake area and traditional middle-class families in its rows of single-family homes in the central to eastern portions. Large-scale commercial development is concentrated along the Interstate 494 corridor. Besides an extensive park system, with over 1,000 square feet (93 m2) of parkland per capita, the city's south border with the Minnesota River is buffered by the Minnesota Valley National Wildlife Refuge. Bloomington has more jobs per capita than either Minneapolis or St. Paul. Its economy includes headquarters of major companies such as Ceridan, Health - Partners and Toro. The city is a hospitality and retail magnet, recognized na- tionally for the United States' largest enclosed shopping center, Mall of America. Brooklyn Center Brooklyn Center lies on the west bank of the Mississippi River on the northwest border of Min- neapolis in Hennepin County. Brooklyn Center is one of the oldest inner -ring suburbs of Min- neapolis -St. Paul, with about 3.2 million residents. The U.S. Census Bureau estimated the city's population at 27,488 in 2007. Formed as the center of local trade in Brooklyn Township since 1873, the rural area farmed market gardening for the nearby growing population of Minneapolis. The village incorporated in 1911, splitting from Brooklyn Township, to avoid annexation from the expanding city of Minneapolis. The city became a bedroom community and industrial job center following post- war growth. Brooklyn Center is known its regional mall Brookdale Center, and the headquarters of Caribou Coffee moved into the city in 2004. Brooklyn Park Brooklyn Park lies on the west bank of the Mississippi River upstream from downtown Min- neapolis in northern Hennepin County. Brooklyn Park is the fourth-largest suburb of Minnea- polis/St. Paul. The U.S. Census Bureau estimated the city's population at 71,394 in 2007. The • city is known for Edinburgh USA Golf Course, North Hennepin Community College and a campus of Hennepin Technical College. A traditional bedroom community of both major cities, Page 20 Mitigation Plan Introduction Target Corporation is currently expanding its Northern Campus into a $1.78 billion dollar office, retail, and housing city center providing 26,600 jobs. Once Brooklyn Township, the township split in 1860 with the southeastern village incorporating into Brooklyn Center and Crystal Lake. Champlin The city of Champlin is located along the Mississippi River, surrounded by the cities of Anoka, Dayton, Brooklyn Park, Maple Grove and Coon Rapids, about 18 miles northwest of Minnea- polis. According to the U.S. Census Bureau, the city has a total area of 8.8 square miles, of which, 8.2 miles of it is land and 0.6 square miles is water. The average elevation is 875 feet above sea level. The population was 22,193 at the time of the 2000 Census. The settlement of the Champlin area began when Father Louis Hennepin, a Franciscan priest from whom Hennepin County gets its name, Michael Accult and Peter Dulay were captured by the Sioux Indians. An Indian trading post was eventually established in the area. Charles Miles created the first perma- nent settlement in what came to be called the Marshall Township. In 1859, it was split into two towns, Champlin and Dayton. Chanhassen Chanhassen is located in both Hennepin and Carver counties. The population was 20,321 at the 0 2000 Census, with a 2006 estimated population of 23,530. The original name comes from the Dakota word chanhasen, meaning "sugar -maple - tree" (chan, tree; haza, a tree with sap). U.S. Route 212 and Minnesota State Highway 5 and 41 are three of the main routes in the city. Chanhassen is home to the Minnesota Landscape Arboretum, the Chanhassen Dinner Thea- ters, and Paisley Park Studios. Corcoran Corcoran was settled in 1855 and was organized on May 11, 1858. The city is named after Pat- rick B. Corcoran, the first schoolteacher, merchant, and postmaster of the town. The city of Corcoran was incorporated on December 4, 1948. According to the U.S. Census Bureau, the city has a total area of 35.9 square miles, and the census of 2000 was at 5,630 people. Page 21 PEA Mitigation Plan Introduction . Crystal Crystal's population was 22,698 at the 2000 Census. According to the Census Bureau, the city has a total area of 5.9 square miles. The city is bordered on the north by the city of Brooklyn Park, on the east by Brooklyn Center and Robbinsdale, on the south by Golden Valley and on the west by New Hope. Crystal has been awarded the "Minnesota Star City" designation for economic development. Minnesota State Highway 100 and County Road 81 are two of the main arterial routes in the city. Crystal Airport, a small general aviation field, is also located within the city limits. Dayton Dayton is located in both Hennepin and Wright counties. The population was 44,699 at the 2000 census. It is the northernmost city in Hennepin County. The city of Dayton, platted in 1855, is named for city founder Lyman Dayton. Through his finances, Lyman Dayton was instrumental in bringing the railroad into Minnesota and development of the Lake Superior and Mississippi Railroad, of which he was President until 1865. 0 Deephaven Deephaven is located on the shores of Lake Minnetonka. It is 16 miles from Minneapolis and had a population of 3,853 at the 2000 census. According to the U.S. Cen- sus Bureau, the city has a total area of 2.4 square miles. Minnetonka Boulevard serves as a main transportation route for the city. Deephaven is home to the Minnetonka Yacht Club and the historic Cottagewood General Store. Eden Prairie Eden Prairie is a suburb 12 miles southwest of downtown Minneapolis. The city lies on the north bank of the Minnesota River, upstream from the confluence with the Mississippi River. Eden Prairie is the seventh largest suburb and is composed of large lakes and ponds, and has more than 170 miles of multi -use trails, 2,250 acres of parks, and 1,300 acres of open space. The city is home to more than 2,200 businesses and headquarters of SuperValue, ADC Telecommunications, MTS Systems Corporation and the Minnesota Vikings. Regionally known • for Eden Prairie Center, it is also the hub for South West Transit, serving public transportation to three adjacent suburbs. As of the 2000 census, Page 22 Mitigation Plan Introduction there were 54,901 people and the city has a total are of 35.2 square miles. Edina Edina is a first -ring suburb situated immediately southwest of Minneapolis. Edina began as a small farming and milling community in the 1860's and is today 95 percent developed metro- politan community. The population was 47,425 at the 2000 census. Edina began as part of Richfield Township 1850's. In 1888, the residents of the township held a meeting to consider founding a new village, thus separating themselves from Richfield Township. The idea was favorably accepted by those within the community and a committee was established to oversee the transition. Many major highways run through or are close to Edina, making it accessible to all within the metropolitan area. Minnesota State Highways 62 and 100 divide the city into four sections. U.S. Route 169 and Minnesota State Highway 100 extend north and south. Interstate 494 and Minnesota State Highway 62 east and west. Excelsior Excelsior was founded in the 1850s as a destination for vacationers, primarily from the cities of Minneapolis and St. Paul. Throughout the years, Excelsior's Water Street has been the home to many businesses, including hotels, restaurants, and merchants. The population of Excelsior was 2,393 at the 2000 census. Ac- cording to the U.S. Census Bureau, the city has a total area of 0.7 square miles, of which, 0.6 miles of it is land and 01. square miles of it is water. Minnesota State Highway 7 serves as a main transportation route. Golden Valley Golden Valley is a western suburb of Minneapolis and is the main corporate headquarters of General Mills and Pentair. The population was 20,281 at the 2000 census, however, more than 30,000 people work in Golden Valley due to the presence of large employers such as General Mills, Honeywell, and Pentair. According to the U.S. Census Bureau, the city has a total area of 10.5 square miles. Interstate 394, U.S. Route 169, and Minnesota State High- ways 55 and 100 are four of the main arterial routes in the city. Greenfield Greenfield sits along the Crow River in Hennepin County. The Village of Greenfield, now known as the City of Greenfield, was set apart by the Hen- nepin County Commissioners on April 10, 1858. It encompassed that por- tion of Township 119, range West, lying east of the Crow River. The origi- nal name, Greenwood, reflected the appearance of the terrain, which was commonly referred to by native Sioux, Chippewa and Ojibeway as "Big Page 23 Mitigation Plan Introduction Woods". According to the U.S. Census Bureau, the city has a total area of 21.5 square miles and had a population of 2,544 people at the 2000 census. Greenwood Founded in 1956, Greenwood is located 20 minutes west of Minneapolis on Highway 7. At the 2000 census bureau, the population of Greenwood was 729. Greenwood has a total area of 0.6 square miles. Hanover Hanover is located in both Wright and Hennepin Counties, just a few miles southwest of St. Mi- chael/Albertville. The North Crow River flows right through the downtown district and serves as the dividing line between Hennepin and Wright county. The population of Hanover during the 2000 census was 1,355. According to the U.S. Census Bureau, the city has a total of 5.1 square miles. County Road 19 serves as a main route of transportation for Hanover. • Hopkins The first settlers of Hopkins arrived in 1852 as land surrounding Minneapolis was opening up and being explored by members stationed at Fort Snelling. However, the roots of the town be- gan in 1887 with the building of the Minneapolis Threshing Machine Company, later called Minneapolis—Moline, to make farm equipment. At this time, the name of the community was West Minneapolis. In 1928, the name of the village was changed to Hopkins after Harley H. Hopkins, who was among its first homesteaders and was the community's first postmaster. Hopkins is approximately four square miles in size and is surrounded by the larger, western suburban communities of Minnetonka, St. Louis Park, and Edina. Hopkins is about 989/6 developed with little remaining vacant land. The population was 17,145 at the 2000 census. U.S. Route 169 and Minnesota State Highway 7 are two of the main arterial rotes in the city. Independence Independence Township was organized on April 11, 1858, and became the Village of Independence on January 8, 1957, and the city of Independence on April 9, 1974. Independence is located on the western edge of Hennepin • County with a population of 3,700 people. Two major Three River parks; Rebecca and Baker, can be accessed directly from Independence and the Page 24 Mitigation Plan Introduction popular Luce Line recreation trail crosses the south side of the city. According to the U.S. Cen- sus Bureau, the city has a total of 34.6 square miles. U.S. Route 12 serves as a main arterial route to the community. Long Lake Long Lake was established in 1855 and was called Cumberland Town. The city itself only covers roughly 0.9 square miles, according to the U.S. Census Bureau, and the population as of the 2000 census was 1,842 people. U.S. Route 12 serves as a main route of transportation for the city. Loretto Loretto, originally a Soo Line railway village, was founded in 1886 and set- tled by German and Dutch immigrants. Loretto was named for a Roman Catholic mission for refugees of the Huron Indians near Quebec, Canada, called Lorette, and for the village of Lo- retto, Kentucky, where a society of Catholic "Sisters of Loretto at the Foot of the Cross" was founded in 1812. The original source of the name is Loreto, a small town in Italy, which has a noted shire of pilgrimage. The city of Loretto was incorporated in 1940, has a total area of 0.3 square miles and a population of 570 people, according to the 2000 census. County Roads 11 and 19 are the two major routes of transportation for the city. Maple Grove Winnebago Indians were the only inhabitants in the area of Maple Grove until 1851 when Louis Gervais arrived and settled. Four years later, in 1855, city growth included a church, town hall and many homes. The city was known for its large stands of maple trees and was, therefore, a significant source for maple syrup. M With the completion and major upgrades to Interstates 94/694, 494, and U.S.- i Route 169, Maple Grove has grown at a rapid pace since the 1970's. The population of Maple Grove was 50,365 during the 2000 census. The city has a total area of 35 square miles Maple Plain Maple Plain is located 25 miles west of Minneapolis on Route 12 and is named for the many sugar maples in its surrounding forests. Early settle- ment of the area started in 1854 and revolved around lake Independence to its north, and its outflow Pioneer Creek. In 1868 and 1869, the St. Paul, Pa- cific and Manitoba Railroad was built through Maple Plain. The city was incorporated as a village in 1912. According to the U.S. Census Bureau, the city has a total area of 1.1 square miles and the population was listed at Page 25 Mitigation Plan Introduction 0 2,088 at the time of the 2000 census. Medicine Lake The city of Medicine Lake is nestled in the western suburbs on the large peninsula within Medicine Lake, the second largest lake in the Twin Cities. The city is completely surrounded by the city of Plymouth, and forms a pen- insula stretching into the lake that is its namesake. According to the 2000 U.S. Census Bureau, the city has a total area of 0.3 square miles and a popu- lation of 368. Medina Medina is located 16 miles west of Minneapolis and according to the U.S. Census Bureau, the city has a total of 26.9 square miles. The population of Medina was 4,005 during the 2000 census. Polaris Industries, a snowmobile and ATV manufacturing company, is based in the city of Medina. Minne- sota State Highway 55 serves as the main route of transportation for the city. Minneapolis is Minneapolis is the largest city in Minnesota and is the county seat for Hennepin County. The city lies on both banks of the Mississippi River, just north of the river's confluence with the Minnesota River, and adjoins Saint Paul, the state's capital. The city is abundantly rich in water with over twenty lakes and wetlands, the Mississippi riverfront, creeks and waterfalls, many connected by parkways in the Chain of Lakes and Grand Rounds Scenic Byway. Minneapolis was once the world's flour milling capital and a hub for tim- ber, and today is the primary business center between Chicago, Illinois and Seattle, Washington. Minneapolis is nicknamed the "City of Lakes and "Mill City". The U.S. Census Bureau estimated the city's population at 377,392 people in 2007. Minneapolis has numerous routes of transportation including Interstate 494 and 694, Interstate 35W, Minnesota State Highway 62 and 77, U.S Route 169 and Minnesota State Highway 100 to name a few. Minnetonka Located just 8 miles west of Minneapolis, Minnetonka is a fully developed suburban commu- nity of 51,480 residents, making it the 14th largest city in Minnesota. Minnetonka has a long is and interesting history, from when the land was first settled by Dakotah and Ojibway Indians, to its inclusion in the 1803 Louisiana Purchase, to its first recorded exploration by European set - Page 26 mitigation Plan Introduction tlers in 1822, to its mid-to-late 1800s reputation as a center for saw and flour mills and the building of the Burwell House, to its progression from a township to a village, and finally to city. The word "Minnetonka" comes from the Dakota Indian mni tanka meaning "great water". Minnetonka Beach Minnetonka Beach can be traced back as early as 1855, with records listing early settlers. However, the Village was not officially opened for settlement until 1872. The present area of the Village was surveyed, platted and named Minnetonka Beach in 1883. Con- struction of the first road through the Village in 1887, further insured the popularity of Minne- tonka Beach as a resort area for the rich and famous of the time. The Village of Minnetonka Beach was incorporated in 1894, with a resi- dent population of 209. In 1922, by adoption of the present home rule charter, the Village was incorporated as a city of the fourth class. Now, officially The City of the Village of Minnetonka Beach, the Beach remains of the of the smallest incorporated cities in the state. The population as of the 2000 census was at 614 with 230 homes. A boot-shaped peninsula jut- ting out into the center of the waters of Lake Minnetonka, the Village is comprised of a total area of some 296 acres, less than a half section of land. Minnetrista On April 10, 1858, Hennepin County Commissioners set apart Town 117, range 24 as German Home Township, named for the large number of residents of German stock. In 1859, the town government was organized when voters met in Mathias S. Cook's log cabin. During this meet- ing, there were several proposals to change the name of the town and the name "Minnetrista" was chosen. Minnetrista Township continued until 1960, when the r, V ment was adopted municipal structure and became known as the Village of Minnetrista. In the early 1970s Minnetrista was formally incorporated as a statutory city. According to the U.S. Census Bureau, the city has a total area of 30.8 square miles and a population of 4,358 (2000 Census numbers). County Roads 15, 44, and 110 are the three main transportation routes for the city. Mound At the 2000 census, Mound had a population of 9,453 people and according to the U.S. Census Bureau, the city has a total area of 4.9 square miles, with 2.0 square miles is water. Mound de- rived its name from the Indian mounds once found within the present day limits. They were not built by the Dakota Indians, but made by prehistoric Indians. Mound is also the birthplace of the Tonka truck, which is named after Lake Minnetonka. The "Tonka Toys" headquarters was Page 27 Mitigation Plan Introduction is originally located in Mound, until business picked up and they needed a more suitable location for supplies to be delivered to. Considering Mound is half water, it was very hard to navigate. • New Hope New Hope was originally a farming community in Crystal Lake Township. Crystal, Minnesota was incorporated, taking up all of former Crystal Lake Township. The farmers in the western part of the city broke off and formed New Hope Township. In 1953 with suburbia moving in and farm- ers moving out, New Hope was re -incorporated as a borough. According to the U.S. Census Bureau, the city has a total area of 5.1 square miles and the population at the time of the 2000 census was 20,873 people. Orono In 1936 the city of Orono Township was created in 1889 and incorporated in 1955. Located approximately 15 miles west of downtown Minneapolis on the north shore of Lake Minne- tonka, Orono has a total area of 24 square miles; land area is 16 square miles, with 8 square miles of lakes. At the time of the 2000 census, the population of Orono was 7,538. Osseo The City of Osseo is located in the northeastern part of Hennepin County. Originally, Osseo was under the government of the townships of Brooklyn Park and Maple Grove. In the spring of 1875, by an act of the state legislature, Osseo became incorporated. It is said that Osseo is a Native American name, "Waseia" meaning `there is light'. According to the 2000 census, Osseo has a population of 2,434 people and the. city has a total area of 0.8 square miles of land. U.S. Route 169, County Road 81, and Central Avenue/Old Jefferson Highway are the three main arterial routes in the city. Plymouth Plymouth's history can be traced back to the pre-Columbian period, 1400-1500 A.D. The origi- nal inhabitants were the Dakota. Their encampment was at the north end of Medicine Lake. Medicine Lake is derived from the Native American word "Mdewakan", meaning "Lake of the Page 28 Mitigation Plan Introduction Spirit". The Dakota named it after a warrior overturned his canoe and his body was never re- covered. As the new settlers came to the area, they decided to organize. The Hennepin County Board of Commissioners named the new settlement Plymouth. As the community began to evolve, so did local government. Plymouth became incorporated as a village on May 18, 1955. Plymouth became a statutory city on Febru- ary 7, 1974. Plymouth is the seventh largest city in Minnesota. Located 15 miles north- west of Minneapolis, the city is the third largest suburb of Minneapolis. According to the U.S. Census Bureau, the city has a total area of 35.3 square miles and the population at the 2000 census was 65,894 people. Interstate 494, U.S. Route 169, and Minnesota State Highway 55 are the main transportation routes of the city. Richfield Long before suburban homes were built here, Richfield was characterized by its abundance of rich farmland (hence the name) as the Minneapolis and St. Paul area was beginning to grow. In 1908, Richfield officially became a city by adopting a President/Trustee form of government. However, residents of Richfield held town meetings dating back to May 11, 1858—the date on which Congress admitted Minnesota into the Union. Richfield is an inner -ring suburb and is bordered by Minneapolis to the north, Minneapolis/St. Paul International Airport to the east, Bloomington to the south, and Edina to the west. The population was 34,439 at the 2000 census. According to the U.S. Census Bureau, the city has a total of 7.1 square miles. Interstates 35W and 494 and Minnesota State Highways 62 and 77 are the four main arterial routes for the city. Robbinsdale Once property of the Village of Crystal, Robbinsdale became a village on April 19, 1893 after a special election was held to dissolve the Village of Crystal. The geographical area of Robbins - dale has remained at 2.9 square miles since that time. Robbinsdale was also the first suburb of Minneapolis and was named for Andrew Robbins, an entrepreneur who purchased 90 acres of land for the purpose of making the area a suburban town. Robbinsdale has a total area of 2.9 square miles according to the U.S. Census Bureau and has a population of 14,123 (2000 census). Robbinsdale is home to North Memorial Medical Center, which is one of the state's Level 1 Trauma Center and also operates "Airfare", an air medical Page 29 L J Mitigation Plan Introduction • transport service. Minnesota State Highway 100 and County Road 81 are the two main transportation routes of the city. is Rockford Rockford Village was formally incorporated on October 21, 1881, by an act of the Minnesota Legislature. The community remained small, num- bering a few hundred, for most of its existence. In the 1970s it passed 1,000 in population as the Twin Cities suburban area continued to expand and people from this area started to com- mute to the metropolitan area for work. By 1980, the population had more than tripled from a 1970 figure of 730 to 2,408. The April 6, 2006 population estimate is 3,603. Rockford is located in both Hennepin and Wright counties. Minnesota State Highway 55 is the main route in the city. Rogers Rogers became incorporated on February 17 1914 and was named after Thomas Rogers. This followed a fashion of the time in the growing villages and towns of the new states to name towns after individual or family names. The growth of Rogers from a vil- lage to a town was based on manufacturing, distribution and service industries. The City of Rogers now has a population of approximately 6,000 people and accord- ing to the U.S. Census Bureau, the city has a total area of 5.0 square miles. Hassan Township encircles the City of Rogers. Interstate 94 and Minnesota State Highway 101 are the main transportation routes for Rogers. Shorewood The City of Shorewood, once a part of Excelsior Township, was organ- ized as a Village in 1956 and became a statutory city in 1974. Today the City of Shorewood incorporates 3,600 acres and is 6 miles long and 1 mile wide. The City sits on the shores of Lake Minnetonka and also somewhat surrounds the city of Excelsior. The population of Shore- wood was 7,400 during the 2000 census. Minnesota State Highway 7 serves as the main transportation route to the city. Spring Park Spring Park is located on Lake Minnetonka and has over 4 miles of shore- line while being less than a 1/2 square mile in area. Spring Park was incor- porated in 1951 and at that time had a population of a little over 200. Page 30 Mitigation Plan Introduction Spring Park fronts West Arm Bay, Black Lake, and Spring Park Bay. As of the census of 2000, there were 1,717 people in Spring Park, MN. St. Anthony St. Anthony is located in both Ramsey and Hennepin counties. The City is a "first -ring" suburb of Minneapolis and as such is part of the metropolitan area. It is located 5 miles northeast of downtown Minneapolis and eight miles northwest of downtown St. Paul. The population was 8,012 during the 2000 census. About 6,000 residents live in the large Hennepin County part of the city, with about 2,000 resi- dents in the Ramsey County portion. St. Anthony was also the name of the older twin city of Minneapolis, located across from downtown Minneapolis on the east bank of the Mississippi River. Minneapolis and St. Anthony merged in 1872. St. Anthony has a total area of 2.4 square miles and is easily accessible via I -35W, I-694, and Minnesota State Highway 10. St. Bonifacius St. Bonifacius is located about 25 miles west of Minneapolis and is cen- tered around Minnesota State Highway 7 and County Road 92. The popu- lation was 1,873 during the 2000 census and was estimated to be around 2,326 in 2006. According to the U.S. Census Bureau, the city has a total area of 1.1 square miles. St. Bonifacius is completely surrounded by the city of Minnetrista. St. Louis Park St. Louis Park is a "first -ring" city located immediately west of Minneapolis. The 1860s village that became St. Louis Park was originally known as Elmwood, which today is a neighborhood inside the city. St. Louis Park was incorporated into the Village of St. Louis Park on November 19, 1886. The name St. Louis Park was derived from the Minneapolis and St. Louis Railway that ran through the area. As of the 2000 census, St. Louis Park had a population of 44,126 people and according to the U.S. Census Bureau, the city has an area of 10.9 square miles. Interstate 394, U.S. Route 169, and State Highways 7 and 100 are the four main transportation routes in the city. Page 31 Mitigation Plan Introduction is Tonka Bay Tonka Bay was incorporated as a village on September 11, 1901. The city, which has an area of about one square mile, is located between the upper and lower bodies of Lake Minnetonka. It has more Minnetonka shoreline than any other city of its size. Tonka Bay made history long before 1901. In 1853, Peter Gideon staked out a claim of 160 acres in what is now Tonka Bay and where Gideon's Bay still bears his name. Gideon successfully propagated his first apples, "The Wealthy," named for his wife, before he died in 1899. Wayzata The name Wayzata is derived from the American Indian word Wazyata, which had almost mys- tical connotation to the Sioux tribes who originally inhabited the area. In 1852, pioneers began to settle in what is now the present site of Wayzata. A town site was laid out and several establishments sprang up, among them a general store, a sawmill, a post office, and a log schoolhouse. According to the U.S. Census Bureau, the City of Wayzata has a total area of 3.2 square miles and the population as of 2000 was 4,113 people. • U.S. Route 12 serves as the main transportation route of the city. Woodland Woodland is part of the "Big Woods" that once stretched from Owatonna to St. Cloud. The first dwelling was constructed in Woodland in 1867. Woodland was settled in 1882 by year-round residents. The Village of Woodland was incorporated in December 1948. The area of Woodland is 0.8 square miles, approxi- mately 3.6 miles of public roads and 5.9 miles of shoreline on Lake Minne- tonka. As of the 2000 census, the population of Woodland was 480 peo- ple. Hassan Township Hassan is the only remaining township in Hennepin County. Hassan is located along the south bank of the Crow River and bisected by Interstates 94, approximately 20 miles northwest of downtown Minneapolis. The City of Rogers lies entirely within the original township. The township • has a total area of 21.3 square miles and a population of 2,463 people. Page 32 Mitigation Plan Fort Snelling Introduction Fort Snelling, originally known as Fort St. Anthony, is a former military fortification located at the confluence of the Minnesota and Mississippi Rivers in Hennepin County. The original in- stallation was constructed between 1820 and 1824 as Fort St. Anthony. It received its current name upon its completion in 1824 in honor of Colonel Josiah Snelling, who commanded the regiment that built it, and oversaw its construction. The 2000 census listed Fort Snelling as an unorganized territory (a desig- nation it has carried since it was founded) with a total population of 442 people. As of the 2000 census, there were 442 people residing in the un- organized territory. According to the U.S. Census Bureau, the unorgan- ized territory has a total area of 6.7 miles. Additionally, 4.65% of the total area of Fort Snelling is covered by water. Page 33 C•: 0 Hennepin County MMgatlon Plan Planning Process SECTION 2 • Hennepin County PLANNING PROCESS 0 Mitigation Plan The Planning Process The Planning Process Documentation of the planning pro- 'no 2.1 Hennepin County Working Group (HCWG) cess, including public ito volvement, is required to In order to efficiently begin the planning process, Hennepin meet DASA 2000 (see 44CFR §201.4(c)(1) and §201.6(c)(1)). County formed a working group consisting of personnel from the The plan must include a description of County Emergency Preparedness Division and Minneapolis the planning process used to develop Emergency Preparedness. The HCWG began meeting in August the plan, including how it was prepared, who was involved in the process, and of 2008 and continued to meet until December of 2008. Their how other agencies participated. A de - primary goal was to set objectives for the update of the Ap- scription of the planning process should proved 2005 Hennepin County Multi -Jurisdictional All -Hazard include how the planning team or com- Mitigation Plan, with a focus on: enhancing hazard identifica- mittee was formed, how input was sought from individuals or other agen- tion, hazard event profiles, describing future land -use and devel- cies who did not participate on a regu- opment trends, and development of a coherent strategy to ad- lar basis, what the goals and objectives dress the relevant risks for the communities. Also, with the help of the planning process were, and how the plan was prepared- The description of a GIS Coordinator, Hennepin County also began to look at the can be in the plan itself or contained in third and fourth step in the Risk Assessment Process, Inventory- the cover memo or an appendix. ing Assets and Estimating Losses. The GIS Coordinator would work with County data and FEMA HAZUS-MH software to effectively project infrastructure losses in the case of a flood. During the four HCWG meetings, they established objectives and created a timeline for when those objectives would be accomplished. 2.2 Hennepin County Mitigation Planning Team (HCMPT) 0 In August of 2009, the HCWG met to discuss the formation of a Hennepin County Mitigation Planning Team (HCMPT). The Planning Team consisted of representatives from the following agencies/departments/businesses: Minnesota Department of Homeland Security & Emergency Management (HSEM), the National Weather Service, Hennepin County Environmental Services, Hennepin County Management Information Systems (MIS), the Minnesota Department of Natural Resources, the City {<: of Maple Grove, the City of Rogers, Washington County Emergency Management, Wells Fargo, Medica, Ameriprise Financial, Hennepin County Public Affairs, City of Eden Prairie, City of New Hope, City of Corcoran, Hennepin County Public Works, City of Wayzata, Metropolitan Airports Com- mission, Augsburg College, Minneapolis Red Cross, and the City of Minneapolis. 2.3 Jurisdiction Participation With the exception of Chanhassen, Hanover and Rockford, each municipality participated in the development of the plan. Hanover and Rockford sit in both Hennepin and Wright Counties and passed resolutions to be covered under the Wright County Multi -Jurisdictional Hazard Mitigation Plan, and the City of Chanhassen passed a resolution to be covered under Carver Page 34 • CJ • Mitigation Plan The Planning Process County's Hazard Mitigation Plan. The roles of the municipalities who were part of the planning process were to provide input into the each section of the mitigation plan. This included the updates to the Risk Assessment (Hazard Profiles and with the Inventory Assets and Estimated Losses) sections as well as the Community Profile and the Mitigation Measures section. However, not all the jurisdictions were part of the Planning Team themselves. Since the municipalities in Hennepin County are divided into Planning Groups, each group provided a liaison to act as a voice for their Planning Group. Since this was an update to the plan and not a complete re -write, the responsibilities of the planning team consisted of: reviewing the hazard profiles, community profile, future land use and development trends, inventory assets and estimated losses, and coming up with mitiga- tion projects. HCMPT agreed to meet three times before the submittal of the updated plan. The first meeting of the HCMPT was held at the Medina Public Works Building in Medina, MN on October 21, 2009. The meeting consisted of reviewing the update to the Community Profile and step two of the Risk Assessment Process which is profiling hazards events. At this meeting the consensus was that another hazard profile, Transpor- tation, be created and included in the plan. The Transportation Profile would include Air, Roadway, Rail/Transit and Pipeline. Members of the Mitigation Planning Team were given all pro- filed hazards to review and provide comment before the next meeting. The second Mitigation Planning Team meeting was held on Feb- ruary 24, 2010 at the Medina Public Works Facility. The meet- ing consisted of reviewing all hazard profile information that had been updated since the October 21 st meeting. The group also reviewed the new Transportation Hazard Profile as well as the Allttg3tgt1 PI011 __9bbpfZl��yE1 r•. i�..r .a..c W.eY ib.er�u.�sa. a N�..YDt •q.iNml.....— wml MIO.n r w.. ,W,.rrx Oe.eldW q.r.. Nwp....eweeyen. y..r�i.rw�..w�.r+e•... ✓..� �rui.r.tv�e�w.N.r.�dy.�r^ ... .e�+r.voa.. •.r,,.�.ua.�M .....e future land trends section of the Introduction section. The pri- New Transportation Profile mary focus of the second Mitigation Planning Team meeting was to look at the Inventory Assets and Estimated Losses section of the Risk Assessment that had been completed by the cities and Hennepin County GIS Division. Gathering information from both County GIS data and specific city information, the following Hennepin County cities identified critical assets in the floodplains: Bloomington, Brooklyn Center, Brooklyn Park, Champlin, Corcoran, Eden Prairie, Edina, Excelsior, Greenfield, Lo- retto, Maple Grove, Medicine Lake, Medina, Minneapolis, Minnetonka, Orono, Plymouth, Shorewood, St. Louis Park, and Wayzata. The final Mitigation Planning Team meeting took place on April 4, 2010 at the Medina Public Works Facility. The meeting consisted of reviewing the entire update to the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan. The group also looked at Hennepin County's 2010 Mitigation Goals as well as the previous mitigation measures and what had been accom- plished and what was still a priority. Page 35 Mitigation Plan The Planning Process 2.4 Additional Planning Input 0 As stated under the Hennepin County Mitigation Planning Team (HCMPT) section above, the planning team consisted of members of neighboring communities, governmental agencies, busi- nesses, academia, and other non-profit interests. This representation was purposely planned so that Hennepin County could would have input from all disciplines which would in turn help to create a more comprehensive mitigation plan. 2.4 Public Involvement Public participation is a key component of strategic planning processes. Since hazards may af- fect the entire community, it pays to get as many citizens as possible involved in identifying them, and in planning, designing and implementing hazard mitigation strategies. Public in- volvement builds support and ensures a strong base for future mitigation activities. The value of public involvement lies in sharing responsibility with those who will strongly influence the success or failure of the mitigation effort. Public participation also offers the residential and business community the opportunity for inclusion of their interests and concerns into the proc- ess. The Federal Emergency Management Agency (FEMA) requires public input during the devel- opment of local hazard mitigation plans. For Hennepin County's Multi -Jurisdictional All - Hazards Mitigation Plan update, the public was invited to participate via the internet. The plan was hosted online at http://hennepin.us for six weeks during the January through March time- frame. Since the Plan was in draft form and prior to it being approved, the mitigation measures section of the plan was not posted due to the stages of the planning process. Home — Hennepin County, Minnesota - Microsoft Internet Explorer File Edit tv Favorites Tools Help 0 Back - �3 Search Favorites " - Aed R, http://%vww.co.hLmepin,mn.uE/ Hrennepin County, `Jirt1-x'ta T7v Notice Sigfn--Up I County Nes I Contact I site Hap Search How Do I? Who Is? Where Is? HOME RESIDENTS BUSINE55 PUBLIC SAFETY & LAW GOVERNMENT ABOUT County Board Commissioner & District Online Services Property Information Search In Custody & Inmate Search Pothole Reporting Multimedia Featured Videos Slideshows Page 36 Popular Links Public Comment Sought for Disaster Mitigation Plan HINT Flu Emergency Resources s ,4g R Public safety is a primary concern of Centers government, and Hennepin is seekingService input from the public about it's plan to respond and Libraries L !£m recover to a broad range of disasters. Drop -Off Sites: Household Hazardous rHV Read more about Public Input Needed for Waste & Recycling Disaster Plan Hennepin Count, Budget Documents = Dunt, News swamv Waiting Children • > For County Employees County Board Commissioner & District Online Services Property Information Search In Custody & Inmate Search Pothole Reporting Multimedia Featured Videos Slideshows Page 36 Mitigation Plan The Planning Process is To advertise the plan, the Hennepin County Public Affairs Office created a press release for multiple media outlets, giving information on why we need the public's assistance, why the county needs a mitigation plan and a definition of what is hazard mitigation. This press release was done in conjunction with the Multi -Jurisdictional All -Hazard Mitiga- tion Plan being posted to the CountyIN m: Hennepin County News website. acbae, s . eiz s- u • 300 s� nsn : h St t t NI—aooiis. FIN 554U-0011 • • Jan 27. 2010 Contacts: DanBovitz, Emergency Preparedness: 612-596-0249 LuAnn Schmaus, Public Affairs: 612-348-7865 Hennepin seeks public input on steps to mitigate hazards Have you ever wondered how you or your neighborhood would survive a disaster such as a flood, a tornado or an accident involving a hazardous material? Staff in Hennepin County's Emergency Preparedness unit do, and they want your ideas. You're invited to go to Hennepin's website at http://hennepin.w and review the county's "Multi - Jurisdictional All -Hazards Mitigation Plan." The plan outlines how the county and its partners —from The Hennepin County Public Affairs Office sent out a news release to multiple media outlets adver- tising the Draft Plan. Page 37 Hennepin County mmun ion Plan Risk Assessment - SECTION 3 Hennepin County RISK AssEssmEHT F7 Hennepin County Mitigation Plan Risk Assessment • 3.1 Risk Assessment Process Risk Assessment is the process of measuring the potential loss of life, personal injury, eco- nomic injury, and property damage resulting from natural hazards by assessing the vulnerability of people, buildings, and infrastructure to natural and man-made hazards. Risk assessment pro- vides the foundation for the rest of the mitigation planning process. The risk assessment proc- ess focuses your attention on areas most in need by evaluating which populations and facilities are most vulnerable to natural hazards and to what extent injuries and damages may occur. It tells you: • The hazards to which your community is susceptible; • What these hazards can do to physical, social, and economic status; • Which areas are most vulnerable to damage from these hazards; and • The resulting cost of damages or costs avoided through future mitigation projects. The Hennepin County Mitigation Working Group (HMWG) used a risk assessment process consistent with procedures and i steps presented in the Federal Emergency • Management Agency's (FEMA) How -To Guide "Understanding Your Risks: Identi- assess fying Hazards and Estimating Losses." risks HMWG used the four -step risk assessment process shown in Figure 1. 3.1.1 Identifying Hazards Hazard identification is the process of iden- tifying hazards that threaten an area includ- ing both natural and man-made events. A natural event causes a hazard when it ELM harms people or property. Such events would include flooding, tornadoes, winter Figure 1—FEMA Four -Step Risk Assessment storms, drought, thunderstorms, and ex- treme temperatures that affect populated areas. Man-made hazard events are caused by human activity and include technological hazards and terrorism. Technological hazards are generally accidental and/or have unintended consequences (for example, an accidental hazardous materi- als release). Approaches to collecting historical hazard data include researching newspapers and other records, conducting a planning document and report literature review in all relevant haz- ards subject areas, gathering hazard -related GIS data, and engaging in conversation with rele- vant experts from the community. Even though a particular hazard may not have occurred in Page 38 Hennepin County Mitigation Plan Risk Assessment recent history in Hennepin County, it is important during the hazard identification stage to con- sider all hazards that may potentially affect the study area. IRW The HMWG reviewed hazards listed in the How-to Guide and determined the prevalence of each hazard in Hennepin County and whether each hazard should be included in the plan. They include: avalanche, coastal storm, coastal erosion, dam failure, drought/water supply, earth- quake, expansive soils, extreme heat, flooding, hailstorm, housebuilding fire, land subsidence, landslide, liquefaction, severe winter storm, tornado, tsunami, wildfire, windstorm, and vol- cano. Although not required by the FEMA Disaster Mitigation Act of 2000, manmade hazards such as hazardous materials release and terrorism were also reviewed by the HMWG. In the hazard identification stage, the HMWG determined hazards that potentially threaten Hen- nepin County. The hazard screening process involved narrowing a comprehensive list of haz- ards to those most threatening to Hennepin County. The all-inclusive list included: dams, droughts, earthquakes, extreme temperatures, flooding, hazardous materials, infectious diseases, karst topography, radiological, solar storms, terrorism, thunderstorms, tornadoes, transportation and winter storms. After reviewing the comprehensive list, the HMWG came up with a final list of hazards that would be included in the plan. Table 1 identifies the final list of hazards included in the plan and includes the data collected for hazard identification and the justification for the inclusion in the plan. Hazard Data Collected for Hazard Identification 3ustification for Inclusion Dams • Minnesota Dam Safety Program • Two Hennepin County dams • Minnesota Division of Waters are rated at High hazard level • DNR GIS . History of dam incidents • NATDAM • Several dams exist through- out Hennepin County • Downstream development Droughts . National Climatic Data Center . History of drought in Henne- • Minnesota State Climatology Office pin County. • U.S. Drought Monitor • Hennepin County has a wide variety of agriculture types (row crops, dairy, horse farms, hobby farms, cattle) that would be subject to drought. Earthquakes • University of Minnesota • General knowledge of Min- * Modified Mercalli Intensity Scale nesota earthquake history • Proximity to the New Madrid Fault Page 39 X H • • Hennepin County Mitigation Plan Risk Assessment Extreme Tem- • Minnesota State Climatology Office • Continental Polar (cP) air peratures • National Climatic Data Center mass dominates the Upper National Oceanic and Atmospheric Ad- Midwest ministration (NOAA) • Special populations at risk The Zunis Foundation due to extreme temperatures Flooding • National Climatic Data Center • Both river flooding and flash • Minnesota Climatology Office flooding can occur on a National Oceanic and Atmospheric Ad- yearly basis in Hennepin ministration (NOAA) County National Severe Storms Laboratory • Flash floods are the #1 (NSSL) weather killer in the U.S. • Several rivers and creeks have flood history Past occurrences of ice jams Hazardous • Minnesota Duty Officer • Extensive history of hazard - Materials • Minnesota Homeland Security and ous material spills in Henne- Emergency Management (HSEM) pin County • Maple Grove Fire Department • Several fixed facilities lo- National Response Center cated around Hennepin County Many transportation corri- dors are arteries for hazard- ous materials Infectious Dis- • Center for Disease Control (CDC) • History of infectious diseases eases • Hennepin County Public Health Depart- in Hennepin County in- ment cludes: Lyme Disease, West Nile Virus, Pandemic Influ- enza, and Tuberculosis. Radiological • U.S. Nuclear Regulatory Commission • Hennepin County sits in the • University of Minnesota 50 Mile Ingestion Pathway • Minnesota Homeland Security and Zone of the Monticello Nu - Emergency Management (HSEM) clear Generating Plant Several fixed facilities with radiological materials Table 1: Hazards Included in the Plan Page 40 Hennepin County Mitigation Plan Risk Assessment Hazard Data Collected for Hazard Identification Justification for Inclusion Terrorism • Code of Federal Regulations . History of domestic terrorism • Minnesota Joint Analysis Center at the University of Minne- (MNJAC) sota • The federal and state govern- ments have advised every jurisdiction to consider the terrorism hazard • Heightened security concerns after September 11, 2001 Thunderstorms • National Climatic Data Center • Thunderstorms and their haz- • Minnesota State Climatology Office ards have caused millions of • National Oceanic and Atmospheric Ad- dollars in damage to Henne- ministration (NOAA) pin County • National Severe Storms Laboratory . Thunderstorms are a county- (NSSL) wide hazards • Hennepin County GIS Division . Injuries and death have oc- curred due to thunderstorms in Hennepin County Tornadoes • National Climatic Data Center • Millions of dollars in damage • Minnesota State Climatology Office have occurred due to torna- • National Oceanic and Atmospheric Ad- does in Hennepin County. ministration (NOAA) . Hennepin County has seen • National Severe Storms Laboratory both injuries and death from (NSSL) tornadoes • Hennepin County GIS Division . Hennepin County has seen over 40 tornadoes since 1820 Transportation • MNDOT . Yearly car accidents • Metropolitan Airports Commission . I-35 Bridge Collapse • National Pipeline Mapping System . History of airline incidents • Hennepin County Transportation Sys- . Daily transport of hazardous tems Plan. materials thru the county Winter Storms . National Climatic Data Center • Continental Polar (cP) air • Minnesota State Climatology Office mass causes winter storms • National Oceanic and Atmospheric Ad- . Utility disruption due to win - ministration (NOAA) ter storms is a common oc- currence Page 41 H Hennepin County Nweation Plan Risk Assessment • 3.1.2 Eliminated Hazards C] During the hazard screening, the HMWG determined that a number of hazards would not be included in the profiling step because they were not prevalent hazards within the County, were found to pose only minor or very minor threats the county compared to the other hazards. Ta- ble 2 gives a brief description of those hazards and the reason for their exclusion from the list. Table 2: Summary of Hazards Excluded from hazard Profiling Description Reason for Wildland Fire Fire in forests, grasslands, prairies, or other Wildland fires are a seldom oc- natural areas, not involving structure fires currence in Hennepin County (although wildland fires may threaten struc- tures or vice versa) Karst Topogra- Karst topography is landscape created by Although Hennepin County has phy groundwater dissolving sedimentary rock a number of springs, and cov- such as limestone. This creates land forms ered karst with more than 100 such as shafts, tunnels, caves, and sink- feet of sediment on top. There holes. have been no incidents of groundwater pollution as a re- sult of karst topography in re- cent years. Solar Storms Solar flares are intense, temporary releases The frequency of flares is very of energy. The energy arrives into Earth low. and effects technological systems such as power grids, satellites, and radio communi- cations. Minnesota Karst Lands aaew.Nmw. u.r nen pe.Nbnlan�t � wNab.nM Ytw � b.mre.m mver. Nv.n� 1Mr J\ nMu.weni w..r • Hazards such as Wildland Fires, solar storms, and Karst Topography have been eliminated from the 2010 Hennepin county Mitigation Plan Page 42 Hennepin County Mitigation Pian Risk Assessment 3.1.3 Profiling Hazards A hazard profile asks the question: What is the potential impact of identified hazards on the community? The hazard profile helps determine how each haz- ard will affect the community, how often each hazard may oc- cur, and where the hazards might take place. We began the haz- ard profiles by looking up information on past occurrences throughout the county. Sources of information of information for past occurrences came from a wide variety of areas such as: the Minnesota State Climatology Office, the National Climatic Data Center, the National Oceanic and Atmospheric Admini- stration (NOAA), the Minnesota Department of Natural Re- sources (DNR), the Minnesota Division of Homeland Security & Emergency Management, the National Response Center, lo- cal fire departments..etc. These hazard histories developed dur- ing this step provides more extensive information with details about how each historical event actually affected the commu- Hazard Profile Example nity. The second part of the hazard profile is to assess the likelihood of occurrence and the potential impact of each hazard. Some hazards are more likely to occur in a particular community than others. Each Hennepin County municipality assessed the likelihood of occurrence and potential impact of each hazard identified. A likelihood of occurrence is not an actual prediction but basted on regional data and local historical evidence. Potential impact is a combination of size of effected area, potential for causing casualties, economic effects, and speed of onset. For the size of effected area, each hazard will be different. For example, a blizzard might affect an en- tire state or even several states, while a flood might only affect a portion of a county or munici- pality. Although the size of the affected area is not always indicative of the destructive poten- tial of the hazard (a tornado is a good example), generally the larger the affected area, the more problematic the hazard event is to a community. Potential for causing casualties simply refers to the number of casualties (deaths or injuries) that can be ex- pected if a particular hazard event occurs. The economic ef- fects are the monetary damages incurred from a hazard event and include both public and private damage. Direct physical damage costs, as well as indirect impact costs such as lost busi- ness and tax revenue, are included as part of the monetary dam- ages. Finally, the speed of onset takes into account how much warning time is available before an event takes place. Spring flooding in Dayton, MN Page 43 H H Noneopie County Mitigation Plan Risk Assessment • Once all Hennepin County municipalities came up with a score for their hazards (likelihood of occurrence and potential impact), the HMWG separated the score sheets by Emergency Plan- ning Group and their scores were divided by the number of cities and categories to find a me- dium score. The Emergency Planning Groups break down as follows: is Lake Minnetonka Planning Group: Corcoran, Deephaven (Woodland), Greenfield, Mound, Orono (Long Lake, Minnetonka Beach and Spring Park), Medina (Loretto), Minnetrista (St. Bonifacius), South Lake Minnetonka (Excelsior, Greenwood, Shorewood and Tonka Bay), Wayzata, West Hennepin (Maple Plain and Independence), Hennepin County Sheriff's Office, and Three Rivers Park District). North Suburban Emergency Planning Group: Brooklyn Center, Brooklyn Park, Champlin, Dayton, Golden Valley, Hassan Township, Maple Grove, Medicine Lake, Osseo, Plymouth, Robbinsdale, Rogers, St. Anthony, West Metro Fire (Crystal and New Hope), and Hennepin County Sheriff s Office. South Hennepin Planning Group: Bloomington, Eden Prairie, Edina, Hopkins, Minneapolis/St. Paul International Airport, Minnetonka, Richfield, St. Louis Park, and the Hennepin County Sheriff s Office. Minneapolis Planning Group: Minneapolis 3.1.4 Inventory Assets Steps one and two of the risk assessment process determine whether a community might experi- ence various types of intensities of hazards, what the level of impact those hazards might have, and where within the community those hazards are likely to oc- cur. Step three helps answer the question: "What will be af- fected by the hazard event? The first task in this step involves creating a list and description of assets located throughout the community, identifying each one on the map, and tallying up the total most of assets. Particularly important to identify are the community's critical facilities that are necessary for the health and safety of the population. Lifeline utilities and other infrastructure should also be listed, including water systems, communication lines and energy services. Hennepin County used three sources to gather the asset information: FEMA's HAZUS MH software, Hennepin County GIS data sets and city data. Chy of Edina IMr.sM1v[fuw Edna ll.s iW S:-JTyeu Fi.:a: Both County and city data helped to identify critical assets in the floodplains. Page 44 Hennepin County Mitigation Plan Risk Assessment 3.1.5 Estimate Losses The fourth step in the risk assessment process answers the question: "What could the community lose in a hazard event?" In this step, (results forthcoming) Hennepin County estimates losses using dollar amounts that indicate how the community could be impacted economically by the various hazards that threaten it. HAZUS-MH (Hazards United States - Multi -Hazard), the loss estimation software produced by FEMA, has been useful in carrying out this process. A loss estimate assesses the level of damage that could happen to each individual asset in the inventory from each type of hazard, for Hennepin County, that hazard is flooding. This in- volves calculating the losses that could occur to each structure, based on the building's replace- ment value. The loss to the contents of each structure is also added to the calculation if possi- ble. When added together, these various figures provide an estimated total loss for assets in the community if a natural hazard event occurs. The loss estimation step of the risk assessment provides one more piece of information illustrat- ing the community's level of vulnerability. The ultimate goal is to reduce that vulnerability; knowing exactly what is at stake can help develop the most appropriate mitigation strategies for achieving that goal. exactly what is at stake can help develop the most appropriate mitigation strategies for achieving that goal. 3.1.6 Hazard Profiles A hazard profile is a description of the physical characteristics of a hazard and a determination of various hazard descriptors, including likelihood of occurrence, size of affected area, potential for causing causalities, economic impacts, and speed of onset. The hazard data that were col- lected in the hazard identification process were mapped to determine the geographic extent of the hazards in each jurisdiction in Hennepin County and the level of risk associated with each hazard. The hazards were then given a risk level of high, medium or low depending on several factors unique to the hazard. The hazards identified and profiled for Hennepin County, as well as the data used to profile each hazard are presented in this section. The hazards are presented in alphabetical order, and this does not signify level of importance to the Hennepin County Working Group (HCWG). 3.1.7 Summary—Impact of Hazards When identifying the overall impact of our hazards, the cities were asked to score them across four categories: size of affected area, potential for causing casualties, economic impacts, and speed of onset. The columns on the table represent the following: Page 45 Hennepin 000M N!"Vaden Plan Risk Assessment is Size of Affected Area - Each hazard affects a geographic area. For example, a blizzard might affect an entire state or even several states, while a flood might only affect a portion of a county or municipality. Although size of the affected area is not always indicative of the destructive potential of the hazard (a tornado is a good example), generally the larger the affected area, the more problematic the hazard event is to a community. Potential for Causing Casualties - Potential for causing casualties refers to the number of casualties (deaths or injuries) that can be expected if a particular hazard event occurs. Economic Effects - Economic effects are the monetary damages incurred from a hazard event and include both public and private damage. Direct physical damage costs, as well as indirect impact costs such as lost business and tax revenue, are included as part of the total monetary damages. Speed of Onset - Speed of onset takes into account how much warning time is available before an event takes place. Impact of Hazards Table 11 Hazard Annual Chance Impact Location Square Miles Affected Impact on Property Speed of Onset Potential for Causing Casualties Economic Impact Dams I% Communities NA Low High Low Low Drought 18% Countywide 606.80 Low Low Low Moderate Earthquakes 1% Countywide 606.80 Low High Low Low Extreme Temperatures 33% Countywide 606.80 Low LOUT Low Low Flooding 40% Floodplains 109.05 Moderate Moderate Moderate Moderate Hazardous Materials 100% Communities 606.80 Low High Low Moderate Infectious Diseases NA Countywide 606.80 Low Low Low Low Radiological 1% Countywide 606.80 Low Moderate Low Low Terrorism 1% Communities 606.80 Low High High Moderate Thunderstorms 100% Countywide 606.80 Moderate Low Low Low Tornado 32010 Countywide 606.80 High Moderate Moderate Low Transportation 100% Communities 606.80 Low High High Low Winter Storms 100% Countywide 606.80 Low Low Low Low • 3.2 Hazard Profiles Page 46 Hennepin County Midgadon Plan Risk Assessment Dams Radiological Drought Terrorism Earthquake Thunderstorms Extreme Temperatures Tornadoes Flooding Transportation Hazardous Materials Winter Storms Infectious Diseases eS EO • Dam Facts ♦ Minnesota's Dam Safety Program was created in 1978 in response to the federal Dam Safety Act. ♦ Minnesota Stat- utes, Section 103G.515 author- izes the DNR commissioner to inspect dams and issue orders di- recting dam own- ers to make nec- essary changes. • Minnesota DEPARTMENT OF NATURAL RESOURCES ♦ Dams designated as High Hazard are inspected an- nually and lower hazard dams are 0 Mitigation Plan Risk Assessment D a m s 3.2.1 Hazard Description Dams provide many benefits and are an important part of our civil works infrastructure. They are built for a variety of reasons, including maintenance of lake levels, flood control, power production, and water supply. Dams fail due to inadequate design, improper operation, inadequate maintenance, earthquakes, or unusually large floods. Dam failure can result in the quick release of all the water in the reservoir; the rapid and unexpected flooding downstream can cause loss of life and significant property damages. Dam owners have a clear responsibility to properly maintain, repair, and operate their dams. Existing dams may also have to be improved to meet current dam safety criteria. If development downstream raises the hazard associated with a potential failure, the owner may be required to bring the dam into compliance with a higher standard commensurate with the new conditions. Hennepin County has 20 dams listed in Minnesota's component of the national computerized dam inventory database called NATDAM. NATDAM was developed in cooperation with the Federal Emergency Management Agency and the Association of State Dam Safety Officials, and presently includes information only on those dams meeting the threshold of state dam safety rules. NATDAM can store information on dam name, location, purpose, hazard classification, structural condition, and about 30 other data elements. Below is a table of the dams in Hennepin County, which includes dam inspected less name, location of the dam and hazard rating. A map of the dam locations frequently by is on page 3. The hazard rating scale ranges from High (H) to Significant DNR dam safety (S) to Low (L). The ratings are given by the Minnesota Dam Safety engineers. Program of the Minnesota Department of Natural Resources. Page 47 Dam Facts ♦ The owner of a dam could be found liable for damages incurred from a failure or misoperation. ♦ The DNR com- missioner may make grants to local units of government for dam repair, re- construction, or removal. Fund- ing for repair or removal is pro- vided by the leg- islature through state bonding ap- propriations. ♦ Hennepin County has seen two dam incidents since 1980; one oc- curred in 1987 at the St. Anthony Falls Dam and the other at the Coon Rapids Dam in 1999. Coon Rapids, MN Dam Mitigation Plan Risk Assessment Dam Failure History Hennepin County has had two dam incidents since 1980. In 1987 a lower dam powerhouse collapse resulted in a temporary drawdown of the upper pool at the St. Anthony falls dam, and in 1999 a leaking air bladder was identified and patched at the Coon Rapids Dam. Helping to mitigate the chances of dam failures within the county is the Minnesota Dam Safety Program. The Minnesota's Dam Safety Program was created in 1978 in response to the federal Dam Safety Act. A series of major dam failures killed scores of people in the 1970's and prompted Congress to pass the act to improve dam safety nationally. Minnesota's program includes enabling legislation, agency rules for construction and operation, creation of a dam database, permitting requirements, regular inspections, repair of state-owned dams, and cost— share grants for dam repair by local units of government. The Dam Safety Program regulates the repair, operation, design, construction, and removal of dams. Both privately and publicly owned dams are regulated. The program sets minimum standards for dams regarding safety, design, construction, and operation. These standards are implemented through inspections, permitting, and correcting deficiencies. Page 48 14, 0 Coon Rapids Coon Rapids S Elm Creek Champlin S Lake Minnetonka Minnetonka L Lock & Dam #1 Minneapolis H Mac Pond 2 Bloomington L Medicine Lake Plymouth L Mills Pond Minnetonka L Morris T Baker Reserve Medina L Nine Mile Creek Bloomington L Normandale Lake Bloomington L Plymouth Creek Plymouth L Plymouth Creek Pond Plymouth L Purgatory Creek Eden Prairie L Rice Lake Maple Grove L Riley Creek Eden Prairie L Riley Lake Eden Prairie L Silver Lake Shorewood L Snelling Lake Outlet Bloomington L St. Anthony Falls Lower Minneapolis S St. Anthony Falls Upper Minneapolis H Minnesota Dam Safety Program. The Minnesota's Dam Safety Program was created in 1978 in response to the federal Dam Safety Act. A series of major dam failures killed scores of people in the 1970's and prompted Congress to pass the act to improve dam safety nationally. Minnesota's program includes enabling legislation, agency rules for construction and operation, creation of a dam database, permitting requirements, regular inspections, repair of state-owned dams, and cost— share grants for dam repair by local units of government. The Dam Safety Program regulates the repair, operation, design, construction, and removal of dams. Both privately and publicly owned dams are regulated. The program sets minimum standards for dams regarding safety, design, construction, and operation. These standards are implemented through inspections, permitting, and correcting deficiencies. Page 48 14, 0 0 • is Mitigation Plan Risk Assessment Hennepin County Water Hazards Dams, Floodplain Areas, Lakes & Streams Dams data gathered from the Department of Natural Resources' (DNR) Dam Safety Division. Lakes and streams datasets gathered from the DNR. Floodplain zones gathered from the Federal Emergency Management Agency (FEMA). F 4 J� Dam LocationfReladve Hazard Rating: High . Significant QLow Streams Lakes FEMA Floodplain Areas 100 -year Floodplain 500 -year Floodplain ELM CREEK f! � COON RAPIDS RICE LAKE ° � i<„ 4 r ru MOUTH CREEK POND U f4 �i ,� 4 ESERVE''r PLYMOUTH CREEK Q e ( Q 1 MEDICINE LAKEa IILL;%NDD °i I . :y? STANTHDNY_F0 LS -UP -A L j ST ANTHONY Map created by the Hennepin County EP Division January 29, 2010. Hennepin County makes no warranty, representation, or guarantee asto the content, accuracy, timeliness, or completeness of any of the information provided herein. A" - LOWER LOCK AND DAM NO. f1 SILVERL_AKE �} SNELLING LAKE OUTLET MAC POND 2Q NORMANDALE LAKE PURGATORY CREEK '-L RILEY LAKE Q QNINE MILE CREEK *� RILEY-CREEK W9- 0 9 e0 1.25 2.5 5 1 i t tI 1 Lj Miles Page 49 Mitigation Plan Risk Assessment Overall Hazard Ranking: Dam Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability Low Impact High Probability Moderate Impact robabilit High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability Low Impact High Probability Moderate Impact High Proli , High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability Low Impact High Probability Moderate Impact High r y High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability Low Impact High Probability Moderate Impact High Probability High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact Hi h Im act Page 50 Fj 101, Hennepin County Drought Facts ♦ The drought of 1988 had wide- spread impacts, including $40 billion in esti- mated direct eco- nomic losses and costs in the U.S. ♦ During the drought of 1910, only 11.54 inches of rain fell on the Twin Cities the entire year •♦ During 1988, temperature at the Minneapolis/ St. Paul Airport exceeded 90 de- grees Fahrenheit on 44 days, 8 days more than the old record set back in 1936. ♦ Since 1980, ma- jor droughts within the U.S. alone have re- sulted in costs exceeding $100 billion (National Climatic Data Center). �J Mitigation Plan Risk Assessment D r o u g h t 3.2.2 Hazard Description A drought is defined as a period of abnormally dry weather sufficiently prolonged for the lack of water to cause serious hydrologic imbalance in the affected area. In easier to understand terms, a drought is a period of unusually persistent dry weather that persists long enough to cause serious problems such as crop damage and/or water supply shortages. The severity of the drought depends upon the degree of moisture deficiency, the duration, and the size of the affected area. Droughts can kill crops, grazing land, edible plants, and even in severe cases, trees. If the drought is brief, it is known as a dry spell, or partial drought. A partial drought is usually defined as more that 14 days without appreciable precipitation, whereas a drought may last for years. The most commonly used drought definitions are based on meteorological, agricultural, hydrological, and socioeconomic effects: Meteorological - is a measure of departure of precipitation from normal. Due to climatic differences, what might be considered a drought in one location of the country may not be a drought in another location. Agriculture — Refers to a situation where the amount of moisture in the soil no longer meets the needs of a particular crop. Hydrological — Occurs when surface and subsurface water supplies are below normal. Socioeconomic — Refers to the situation that occurs when physical water shortages begin to affect people. Drought History There have been several droughts that have affected Hennepin County in years past, some more damaging than others. One of the most significant droughts to affect the County was the drought of 1976-1977. The 1976- 77 drought was widespread and by some measures was exceeded only by Page 51 Total Precpnplien DepeAare from N".116.2006 - Zgoat 28.2006 w�. cemm�wxv unx uxa mosu Minnesota's total precipitation depar- ture from normal during the 2006 drought. ♦ The driest August on record for the Twin Cities is .20 (two tenths of an inch) in 1925. The drought continued into July with temperatures six degrees above normal in Minneapolis and rainfall 1.5 to 3 inches below normal. Soil 0 moisture levels reached record lows at most University of Minnesota Experiment Stations. In the Minneapolis area, maximum temperatures of 90 degrees or greater were recorded 17 days, a record high for July. Most locations reported maximum temperatures exceeding 100 degrees at least once during the month. By August, the drought began to subside but not after severe agricultural damage was caused and several records were broken across Hennepin County and the State of Minnesota: ➢ June precipitation averaged 1.40 inches statewide, replacing the old record low of 1.50 inches set in 1910. ➢ May through August average temperature at 69.7 degrees was nearly 2 degrees higher than the old record set in 1936. ➢ Minneapolis -St. Paul Airport had 44 days with 90 degrees or more. The old record has been 36 days in 1936. ➢ The Palmer Drought Index dropped below -7 in northwest Minnesota for the first time since record keeping began at the turn - Page 52 Mitigation Plan Risk Assessment 0 Hennepin County Drought Facts the severity of conditions during the 1930's. In spring of 1976, the general lack of precipitation was statewide. Shallow residential and farm wells ♦ During the 1863 began to go dry in June. Some municipalities also were affected. drought, all com- Precipitation continued to be much less than normal for the rest of 1976 mercial naviga- and gradually returned to normal during the summer of 1977. Minnesota's tion was sus- pended on the State Climatology Office records show the precipitation total for the Twin Mississippi River Cities to be 16.50 inches, well below the 27 inch average (based on the in St. Paul. The Twin Cities Monthly & Yearly Twin Cities Total Average). levels were so low; cattle could Another severe drought that had an impact on Hennepin County was the be seen wading drought of 1988. A nationwide event, the Drought of 1988 intensified in across the river June with Minneapolis receiving only 0.22 inches of rain, making it the north and south driest June ever recorded in the metro area. The June average temperature of the city. for Minneapolis was 74.4 degrees Fahrenheit, which equaled the second ♦ Drought is a nor- warmest June ever. Statewide temperatures ranged from 6 to 9 degrees mal part of the above normal. By the end of June most of the state was classified as either climatic cycle. in "severe" or "extreme" drought. Total Precpnplien DepeAare from N".116.2006 - Zgoat 28.2006 w�. cemm�wxv unx uxa mosu Minnesota's total precipitation depar- ture from normal during the 2006 drought. ♦ The driest August on record for the Twin Cities is .20 (two tenths of an inch) in 1925. The drought continued into July with temperatures six degrees above normal in Minneapolis and rainfall 1.5 to 3 inches below normal. Soil 0 moisture levels reached record lows at most University of Minnesota Experiment Stations. In the Minneapolis area, maximum temperatures of 90 degrees or greater were recorded 17 days, a record high for July. Most locations reported maximum temperatures exceeding 100 degrees at least once during the month. By August, the drought began to subside but not after severe agricultural damage was caused and several records were broken across Hennepin County and the State of Minnesota: ➢ June precipitation averaged 1.40 inches statewide, replacing the old record low of 1.50 inches set in 1910. ➢ May through August average temperature at 69.7 degrees was nearly 2 degrees higher than the old record set in 1936. ➢ Minneapolis -St. Paul Airport had 44 days with 90 degrees or more. The old record has been 36 days in 1936. ➢ The Palmer Drought Index dropped below -7 in northwest Minnesota for the first time since record keeping began at the turn - Page 52 0 U • Hennepin County Drought Facts ♦ Legislation en- acted in 1990 mandated the De- partment of Natu- ral Resources to prepare a drought plan. (Minnesota Statues, section 103G.293). A deteriorating crop during the 2007 Minne- sota drought. ♦ Between 1963 and 1965, the federal govern- ment spent $3.3 billion on drought response. (National Science Foundation, June 1984). ♦ The winter of 1986-1987 was one of the warm- est and driest in Minnesota's re- corded history, with tempera- tures 12 degrees above normal from Dec. through Feb. SECTIONONE Risk Assessment of -the -century. The old record had been -6 in September 1934. ➢ Groundwater levels throughout the state reached new record low levels. ➢ The Mississippi River at St. Paul reached low levels previously experienced only in 1934 and 1976, prompting the first total sprinkling ban in Minneapolis and St. Paul. The 1988 Drought (based on the Drought Severity Classification). ■ Perhaps the most devastating weather driven event in American History, the drought of the 1920's and 1930's significantly impacted Minnesota's economic, social, and natural landscapes. Abnormally dry and hot growing season weather throughout the better part of two decades turned Minnesota farm fields to dust and small lakes into muddy ponds. The parched soil was easily taken up by strong winds, often turning day into night. The drought peaked with the heat of the summer of 1936, setting many high temperature records that still stand today. Page 53 Hennepin County Drought Facts The Palmer Drought Severity Index was cre- ated by Wayne Palmer in the 1960's and uses temperature and rainfall informa- tion in a formula to determine dry- ness. It has be- come the semi- official drought index. A farmer checks the remains of his farm near Appleton, MN during the summer of 1936. ♦ FEMA issued an Emergency Dec- laration on June 17, 1976 due to the drought year (Disaster #3013) SEMONONE Risk Assessment View of the St. Croix River during the drought of 1931. The Drought Severity Classification Drought intensity categories are based on six key indicators and numerous supplementary indicators. The accompanying drought severity classification table shows the ranges for each indicator for each dryness level. Because the ranges of the various indicators often don't coincide, the final drought category tends to be based on what the majority of the indicators show. The analysts producing the map also weighs the indices according to how well they perform in various parts of the country and at different times of the year. Also, additional indicators are often needed in the West, where winter snowfall has a strong bearing on water supplies. To look at the Drought Severity Classification map, please go here. East Central Minnesota (Twin Cities) Annual Precipitation Seasonal variability occurs, as different air masses are dominant. Nearly two- thirds of Minnesota's annual precipitation falls during the growing season of May through September, a period during which Gulf of Mexico moisture is often available. Dry spells occur when this moisture source is obstructed or when atmospheric patterns divert storm systems around Minnesota. When hot, dry air prevails, increased evaopotransportation combines with deficient rainfall to create drought conditions. Drought can occur in all areas of 0 Page 54 • • 11 Hennepin County Drought Facts Protesting farmers bring SECTIONONE Risk Assessment Minnesota; however it is more likely in western and northwestern areas more distant from Gulf of Mexico moisture. Below is a graph of East Central Minnesota's annual precipitation from 1830 to 2000. The drought years are identified by the dots closest to the horizontal (Year) portion of the scale. East Certral Minnesota Annual Precipitation a starving cow and horse 44 40 •4-40.44 inches (1911) to the steps of the capital • ' , • to dramatize the desper- 36 . , • •• ate conditions during the 32 1930's Dust Bowl. LO 28 • •' " • •. r� 24 . •�• .••• • • • . ♦ The National 2 0 , Drought Mitiga- 1 2 tion Center 10.21 inches (1910)x• 5 year moving average s (NDMC) helps o M LD o C) o 0 0 0 0 0 0 0 0 0 people and insti- m __t ILDr_ CID m o k� m v u7 co r-- 00 M o Cn r0 O7CO O2 „ O7 ur 67 !' U7 F? 6 6! 61 6? 07 0 tutions develop T � � � .-- r Year and implement measures to re- duce societal vul- nerability to drought. Farmers Holiday Asso- ciation Works Progress Administration Reps meet to discuss the 1936 drought conditions. Page 55 SECTIONONE Overall Hazard Ranking: Drought Risk Assessment Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability Low Impact High Probability Moderate Impact r High Impac Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability Low Impact High Probability Moderate Impact rg ro ra ility High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability High Probability in Low Impact Moderate Impact pact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability Low Impact High Probability Moderate Impact High Probability High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact H Page 56 0Earthquake Facts ♦ A strong earth- quake on Febru- ary 28,1925, cen- tered in the St. Lawrence River region near la Malbaie, Quebec, Canada, was felt widely in the Northeastern U.S. The shock was lightly felt in Minneapolis. SECTIONONE Earthquakes 3.2.3 Hazard Description Earthquakes are produced by movement of rock in the earth's interior. Most earthquakes occur when solid rock masses, called tectonic plates, move past on another along fracture planes called faults. The fault movement creates a series of waves through the earth's crust, and we perceive these waves at the surface as the shaking of an earthquake. Risk Assessment Earthquake History ♦ The first earth- The Midwest of the United States is far from any plate margin, but even quake in Minne- here, earthquakes do occasionally happen. Although the earthquake- sota was in 1860. generating mechanism in the Midwest is not completely understood, it •Although the ex- date is may be related to the westward drift of the North American plate away act un- from its spreading center, the Mid -Atlantic ridge, toward the subduction known, the shock and transform zones along the Pacific coast. This westward drift sets up a was fairly strong subtle but pervasive compression that is orientated roughly east -west for in the central part most of North America, and this stress can reactivate minor movement of the State. along some ancient faults. ♦ The largest earth- quake ever to oc- cur in Minnesota was near Morris in Stevens County, with a Magnitude of 4.6 and an Intensity of VI. ♦ More than a mil- lion earthquakes occur around the • world each year. In general, earthquakes in the Midwest are less frequent and much smaller than those that occur near plate margins. However, there is one area, the New Madrid seismic zone between St. Louis, Missouri, and Memphis, Tennessee, that has the potential for generating major earthquakes. Such an earthquake sequence occurring today would be devastating to nearby cities, but probably not cause as much major damage as far north as Minnesota. New Madrid 1811 Mer - Minnesota has one of the lowest occurrence levels calli Intensity Scale of earthquakes in the United States, but a total of 19 small to moderate earthquakes have been documented since 1860. Minnesota earthquakes, like those elsewhere in the Midwest, are Page 57 Earthquake Facts Minnesota Seismic Hazard Map ♦ Tremors were felt in Minneapolis on November 1, 1935, after a strong earthquake occurred near Timiskaming, Canada. ♦ Minnesota earth- quakes are of sci- entific interest because they pro- vide information on crustal struc- ture and the re- gional stress field. ♦ Earthquakes strike suddenly, without warning. Earthquakes can occur at any time of the year and at any time of day or night. SEMONONE Risk Assessment attributed to minor reactivation of ancient faults in response to modern stresses. The two largest earthquakes in Minnesota were in Staples in 1917 and in Morris in 1975 at 4.6 and 4.8 on the Richter scale. If earthquakes larger than 5.5 magnitude were to occur in Minnesota, it is likely that their rate of recurrence would be many hundreds or perhaps thousands of years. The last earthquake to be felt in Hennepin County was the 1993 Dumont earthquake. The magnitude of the Dumont earthquake was a 4.1 on the Richter scale, was felt over 69,600 square kilometers (about 27,000 square miles), and was associated with intensity V -VI near the epicenter. Hennepin County received an intensity of Il -III on the Modified Mercalli Intensity Mercalli intensity or isoseismal map of the Dumont, scale. The MN earthquake of June 4, 1993• The different intensity Modified Mercalli levels include the following effects. Intensity Scale gives an Intensity II-III—Sensation of light vibrations or move - indication of the ment, felt most commonly by people at rest indoors. intensity of the earthquake, while Intensity IV—Dishes rattling, creaking in upper floors the Richter scale of house, sensation like a heavy object striking building refers to its or a heavy truck rolling by. C-7 magnitude. Intensity V—Pictures swinging on walls, small or un- stable objects being upset, very minor cracking in weak masonry, such as plaster. Page 58 101 SECTIONONE 0 0 • Risk Assessment Overall Hazard Ranking: Earthquake Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability Low Impact High Probability Moderate Impact 11111111111,1111111110 Hi ' act Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability a ! ity Low Impact Moderate Impact Moderate Probability Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability Low Impact High Probability Moderate Im act a ! ity Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Probability FLow Low Probability Low Probability Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High ProbabilityI a ! ity Low Impact Moderate Impact High Irnpact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 59 Extreme Temp Facts ♦ The all-time daily high temperature in Hennepin County was in Minneapolis on July 14, 1936 with a high of 108 degrees Fahrenheit. ♦ The hottest day ever recorded in Hennepin County was in Minnea- polis on July 13, 1936 with a high of 105 and a low of 86, averaging out to 96 degrees. NORM WAWI�, ♦ The all-time daily low temperature in Hennepin County was in Minneapolis on January 21, 1888 with a low of —41 degrees Fahren- heit. SECTIONONE Extreme Temperatures 3.2.4 Hazard Description Risk Assessment The air mass that dominates the region where Hennepin County is located makes the county susceptible to extreme temperatures. An air mass is a large body of air of relatively similar temperature and humidity that covers thousands of square miles. Typically, air masses are classified according to the characteristics of their source region or area of formation. The air mass that dominates Hennepin County is the continental polar (0). A continental polar (0) air mass originates from the snow covered regions of northern Canada, and has characteristics of very low dewpoints, cold temperatures, and a high degree of stability during the winter months. Although continental polar air masses are also around during the summer months, they are less cool than during the winter. During these summer months, a weakening jet stream and strong southerly winds O bring in very hot and humid air, and less stable conditions. o C P r11 P This continental A , t�h polar air mass makes for extreme temperature swings from summer to winter. ,n Hennepin County's weather extremes are due to the conti- nental polar air mass that dominates the Upper Midwest. Page 60 SECTION ONE Risk Assessment Extreme Temp Facts Extreme Temperature History IdA ♦ The coldest day Extreme Cold ever recorded in Hennepin County has had a strong history of Hennepin County extremely cold temperatures. Due to the was in Minnea- continental polar air mass, each winter can I W4. polis on January bring the chance of seeing sub zero weather 22, 1936 with a conditions. On January 13, 1994 an arctic air mass settled over Hennepin high of —17 de- County. From January 13 to January 19, temperatures dropped from -10 grees, a low of — on January 13 to -27 on January 19. The high temperature on the January 34 degrees, for an 18 was -16 below. The University of Minnesota on the Twin Cities average of -26 campus closed on the 18th due to the cold and the governor closed all degrees. public schools. ♦ Then longest pe- On January 31, 1996, some of the coldest weather to ever hit Hennepin riod of below County settled over the area and remained entrenched through February 4. zero temperatures Minneapolis set three new record low temperatures as well as recording the was 186 consecu- second coldest day on record on February 2. A mean temperature of 25 tive hours from degrees below zero was measured that day with a high of -17 and a low of 8:00 p.m. De- 32 degrees below zero. This was within two degrees of tying the all-time cember 31, 1911 record low temperature set in the Twin Cities and the coldest temperature through 1:00 p.m. recorded this century. The temperatures were so cold that the governor January 8, 1912. closed all schools that day. Another extreme cold event took place on December 24, 1996. A strong 20 low pressure system that deposited heavy snow over northern Minnesota also brought down very cold Canadian air. Temperatures fell to 15 to 35 I04 degrees below zero. In addition, the high temperature on Christmas Day in Minneapolis was only 9 degrees below zero. Combined with the record IQ low temperature that morning of -22 degrees Fahrenheit, the mean temperature for Christmas Day was 16 degrees below zero. Christmas 9-: 1996 set a new record for being the coldest day on record for the Twin Cities metro going back to when modern day records began in 1871. The temperature in Minneapolis fell to -27 degrees below zero. When you talk about extreme cold you also need to talk about wind chill. The wind chill temperature is how cold people feel when outside. Wind chill is based on the rate of heat loss from exposed skin caused by wind and cold. As the wind increases, it draws heat from the body, driving Page 61 Extreme Temp Facts ♦ The longest pe- riod of 100 de- grees Fahrenheit or higher was 5 consecutive days from July 10 through July 14, 1936. ♦ The longest pe- riod of overnight minimum tem- peratures of —20 degrees Fahren- heit or below was 6 consecutive nights, and oc- curred twice. From February 7- 12, 1899 and January 30 - February 4, 1996. ♦ The coldest monthly average in the history of Hennepin County was January 1912, with an average tempera- ture of —2.7 de- grees LA SECTIONONE Risk Assessment down skin temperature and eventually the internal body temperature. Finding out the coldest wind chill ever in Hennepin County is tricky because in November 2001, the formula on how to calculate the wind chill was changed. Perhaps the coldest wind chill Hennepin County has seen was -67 degrees Fahrenheit with the new formula (-87 with the old formula) back on January 22, 1936. The temperature was -34 with a wind speed of 20 mph. All traffic in the Minneapolis area was severely hampered and a number of fatalities were caused by the cold. NWS Windchill Chart'1.�,. NWS Wind Chill Chart as of November r, zoos A Comparison of the Old Wind Chill Chart and the New '"W Page 62 0 • • SECTIONONE Risk Assessment Extreme Temp Facts Extreme Heat ♦ The earliest au- tumn freeze (or temperatures at or lower than 32 degrees) was September 3rd, 1974. ♦ Heat waves are prolonged peri- ods of excessive heat, often com- bined with exces- sive humidity. ♦ In a normal year, approximately 175 Americans die from extreme heat. Young children, elderly people, and those who are sick or overweight are more likely to become victims. ♦ Temps that hover 10 degrees above the average high temp for the re- gion and last for several weeks are defined as ex- treme heat. mom Extreme heat is when temperatures are 10 degrees, or more, above the average high temperature for the region, and last for several weeks. Humid or muggy conditions, which add to the discomfort of high temperatures, occur when a "dome" of high atmospheric pressure traps hazy, damp air near the ground. Heat kills by pushing the human body beyond its limits. Under normal conditions, the body's internal thermostat produces perspiration that evaporates and cools the beyond. However, in extreme heat and high humidity, evaporation is slowed and the body must work extra hard to maintain a normal temperature. Most heat disorders occur because the victim has been overexposed to heat or has over exercised for his or her age and physical condition. Other conditions that can induce heat -related illnesses include stagnant atmospheric conditions and poor air quality. Extreme heat can be just as deadly as other natural hazards due to the nature of the event. Extreme heat doesn't immediately impact people when it sets in, instead it is when the periods of extreme heat last for days and weeks that it takes its toll on people. The elderly are at particular risk. When talking, you need to mention the heat index. The Heat Index is sometimes referred to as the "apparent temperature". The Heat Index, given in degrees Fahrenheit, is a measure of how hot it feels when relative humidity is added to the Temperature CF} actual air 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 40 80 81 83 85 88 91 94 97 101 105 109 114 11 temperature. So. what about the highest heat index ever reached in Hennepin County? The highest heat index value ever recorded in the Twin Cities is believed to be 115 degrees, occurring on July 12, 1995. Likelihood of Heat Disorders with Prolonged Exposure or Strenuous Activity Caution Extreme Caution a Danger ■ Extreme Danqer The National Weather Service's Heat Index Page 63 45 80 82 84 87 89 93 96 100 104 109 114 1 50 81 83 85 88 91 95 99 103 108 113 118 1 55 81 84 86 89 93 97 101 106 112 117 124 60 82 84 88 91 95 100 105 110 11 a 65 82 85 89 93 98 103 108 11 = 70 83 86 90 95 100105 1121 75 84 88 92 97 103109 1161 80 84 89 94 100 106 113 121 85 85 90 96 102 110 117 90 86 91 98 105 95 86 93 100 108 117 100 87 95 103 112 121 Likelihood of Heat Disorders with Prolonged Exposure or Strenuous Activity Caution Extreme Caution a Danger ■ Extreme Danqer The National Weather Service's Heat Index Page 63 Extreme Temp Facts ♦ Sweltering heat and humidity cli- maxed on July 12th and 13th, 1995 with dew - points around 80 degrees. Com- bined with tem- peratures in the upper 90's pro- duced heat indi- ces in the 105 to 120 degree range in Minneapolis. ♦ Hennepin County's warm- est monthly aver- age occurred in July 1936, with an average tem- peratures of 81.4 degrees. iso, ;».. ♦ Frostbite is the medical condi- tion wherein lo- calized damage is caused to skin and other tissues due to extreme cold. SECTIONONE Risk Assessment There have been several past instances of extreme heat in Hennepin County. The earliest records of extreme heat include the "Dust Bowl' of the 1930's. The "Dust Bowl" years of 1930-36 brought some of the hottest summers on record to the United States, especially across the Plains, Upper Midwest and Great Lake States. For the Upper Mississippi River Valley, the first few weeks of July 1936 provided the hottest temperatures of that period, including many all-time record highs. From July 5, through July 18, 1936, Minneapolis received the longest period of 90 degree temperatures with 14 consecutive days. Also, from July 10, through July 14, 1936, Minneapolis received the longest period of 100 degrees or higher, with 5 consecutive days. Minneapolis set their all-time record high on July 13, 1936 with a temperature of 105 degrees. Another extreme heat instance occurred in the summer of 1995. July 10th through the 14th saw high temperatures between 91 and 101 degrees. 12n 1 Lin LL '0 ;[11! 20 0 1995 Heat Wave: Minneapolis/St. Paul Heat Index: July 13, 1995 vs. 1951-1995 Average For July 13 6:00 8:00 10:00 12:00 2 1_i0 4:00 6:00 8.00 AM AM AM PM PM PM PM PM The Heat Index values on this chart are derived from airport weather station readings, carried out in thee shade, away from sunlight and other radiant heat. In July of 1999, two consecutive heat waves hit Hennepin County. The first Page 64 L401 .110 1 gm \ mal 6:00 8:00 10:00 12:00 2 1_i0 4:00 6:00 8.00 AM AM AM PM PM PM PM PM The Heat Index values on this chart are derived from airport weather station readings, carried out in thee shade, away from sunlight and other radiant heat. In July of 1999, two consecutive heat waves hit Hennepin County. The first Page 64 L401 SECTIONONE Risk Assessment • Extreme Temp Facts occurred from July 23 through July 25. A massive upper ridge over the central and eastern United States enabled heat to build into Minnesota. Heat indices ♦ 1936 wasn't just ranged from 95 to 110 the afternoon of the 23, 90 to 105 on the 24, and an extremely hot climaxed at 95 to 115 on the 25th before a cold front moved in. Indices only year; it was also a dropped into the 70s the mornings of the 24th and 25th. Dew points in the year of extremely middle and upper 70s were common, along with temperatures topping out in cold tempera- tures. On Janu- the lower and middle 90s. ary 22nd, 1936 Less than one week after the first heat wave, central and south central Minneapolis Minnesota were belted with even greater heat, especially on the 30th. The broke a record for the coldest morning of the 29th started with lows in the 70s and dew points in the middle wind chill ever 60s to middle 70s, producing heat indices from 70 to 85. With afternoon highs recorded at —67 well into the 90s, and dew points ranging from the middle 60s to upper 70s, degrees. heat indices climbed to the 95 to 114 range. Southern Minnesota bore the brunt of the heat this day with numerous triple digit indices. By 0900 CST on the 30th, the heat index had already climbed past 100 at Minneapolis/St. Paul and many other locales. High temperatures soared into the middle and upper 90s. Dew points neared 80, and some spots even exceeded 80. At 0755 CST, Minneapolis/St. Paul (MSP) tied an all-time record high dew point of 84 (equaling a mark set in 1995). ♦ January is Hen- nepin County's Two more consecutive heat waves occurred in Hennepin County in the coldest month summer of 2001. The first wave hit on July 30 and lasted through August 1St with an average Temperatures on July 30 soared into the upper 80s and lower 90s across a temperature of large portion of central and southern Minnesota, while dew points climbed only 22 degrees into the middle 70s to lower 80s, resulting in triple digit heat indexes during Fahrenheit. De- the afternoon and evening. cember ranks second with an During the early morning hours of the July 31, dew points remained in the average high of 70s, therefore nighttime heat indexes only dropped to the upper 70s and lower 26 degrees Fahr- 80s. In fact, from 1000 CST July 30 to 1600 CST July 31 inclusive, enheit. Minneapolis -St. Paul (MSP) set a record with 31 consecutive hours during which the dew point was equal to or greater than 74 (the previous record was 25 hours in July 1977). On July 31, temperatures climbed slightly higher, while dew points remained in the middle 70s to lower 80s. Heat index values reached triple digits prior to noon in most areas. The second extensive heat wave persisted for five days (August 4 -8th), and resulted in five fatalities in Hennepin County. Hot weather and tropical -like • humidity pervaded the region, as virtually all stations registered highs in the Page 65 Extreme Temp Facts ♦ From July 9 through July 17, 2005 the tem- perature re- mained above 90 degrees for 9 consecutive days. This extended period of extreme heat ranks as the 3rd longest streak of at or above 90 degree highs since 1891 in Minneapolis. ♦ Heat stroke is a life-threatening condition. The victims tempera- ture control sys- tem, which pro- duces sweating to cool the body stops working. The body tem- perature can rise so high that brain damage and death may result if the body is not cooled quickly. Use a fW ((( to Elevmc icer tCmp"MO[uM GIvc fluMs Havr I .. ...lawn SECTIONONE isk Assessment n 90's all five days. Most locales noted highs in the middle and upper 90s, but there were two places which topped out in triple digits. Minneapolis -St. Paul (MSP) reached 98 or 99 three straight days (August 5-7) when highs were 98, 99 and 98 respectively; the highs at MSP on August 6 and August 7 set records. Record low minima at MSP were also established three straight days: on August 6 when the low was only 80, on August 7 when the low was only 76, and again August 8th when the low only dropped to 77 degrees. H Page 66 SECTIONONE Risk Assessment 0 Overall Hazard Ranking: Extreme Temperatures Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: 19 • High Probability High Probability High Probabi i Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability High Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability High Probability bability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability bability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 67 Flood Facts ♦ Just 6 inches of rapidly moving water can knock a person down. ♦ 66% of flood deaths occur in vehicles, and most happen when drivers make the fatal mistake trying to navigate through flood waters. PracipWi- TW.I. APHI 1 - April 23. 2001 PRELIMINARY Heavy rains from April i through April 21, zooi led to spring flooding. Some areas received over 4 inches of rain. ♦ Flash floods are one of the most common hazards in the United States. SECTIONON E F l o o d i n g 3.2.5 Hazard Description Risk Assessment A flood is an overflow or inundation HpOLJ that comes from a river or other body s ' of water and causes or threatens damage. Flooding may happen with only a few inches of water, or it may cover a house to the rooftop. Flooding is caused in a variety of ways: winter or spring rains, couple with melting snows, can fill river basins too quickly. Torrential rains from training or slow moving thunderstorms can also produce river flooding. The most dangerous flood event, the flash flood, happens quickly with little or no warning; other flooding events occur over a long period and may last days, weeks, or longer. Here in Hennepin County, we need to worry about two kinds of flooding; river flooding and flash flooding. A river flood occurs when water levels rise in a river due to excessive rains from persistent thunderstorms over the same area for extended periods of time, combined rainfall and snowmelt, or an ice jam. A flash flood is a rapid rise of water along a stream or low-lying area. Flash flooding occurs within minutes of a significant rain event and is usually caused by intense storms that produce heavy rainfall in a short amount of time. Excessive rainfall that causes rivers and streams to swell rapidly and overflow their banks is frequently associated with large clusters of thunderstorms. Flash floods can occur with little or no warning. Flash flood damage and most fatalities tend to occur in areas immediately adjacent to a stream or arroyo, with rapidly rising water reaching heights of 30 feet or more. Flood History Hennepin County has a strong history of flooding within its borders. Both river flooding and flash flooding have impacted the County in the past, causing major damage to both public and private infrastructure. L01 H u Page 68 0 • Flood Facts ♦ In November 1997, the Min- neapolis City Council adopted a nine-year flood mitigation pro- gram aimed at preventing future flooding caused by undersized storm drains. The city's goal is to provide equal levels of drainage protection throughout Min- neapolis. ♦ A mere 2 feet of moving water can float a large vehi- cle or even a bus. In 1955 the Min- nesota Legisla- ture established the Minnesota Watershed Dis- trict Act to help manage water resources and to educate about erosion, flooding and other issues tied to land uses and waterways. ♦ Flash floods are the #2 weather killer in the United States. SECTIONONE Risk Assessment In spring of 1965, after a winter of heavy snowfall, spring rains helped to create a great flood in Hennepin County. Although the main event took place south of the County, Hennepin saw their fare share of flooding. On April 18, along the Mississippi River in Minneapolis, rapidly advancing flood waters tore into pier 7 of the Stone Arch Bridge causing it to sag and drop stone pieces into the river. Along the 22 mile -long Minnehaha Creek, from Lake Minnetonka down through Edina, Hopkins, St. Louis Park to South Minneapolis, dikes had to be built around private residence to keep the flooding out. This flood event led to a Presidential Disaster Declaration (#188). The 1997 Midwest Floods was another event that affected Hennepin County. After a harsh 1996-1997 winter, heavy spring rains caused one of the worst floods in Minnesota history. Although the main event took place up in the Red River of northwestern Minnesota, these floodwaters began to make their way south towards Hennepin County. From late March through early May, flood waters along the Mississippi and Crow Rivers of Hennepin County began to rise. The Crow River at Rockford crested at 14.4 feet on April 4 which was the fifth highest crest ever recorded. Dayton, Champlin, Brooklyn Park and Brooklyn Center also reported flooding along the riverbanks. Fort Snelling State Park, which borders the Minneapolis/St.Paul Airport, had to close due to rising flood waters. Flash floods have also been an occurrence in Hennepin County's past. On July 23 & 24, 1987 thunderstorm rains created an area over 93 square miles of 10 inches of rain or more and an area 574 square miles of 6 inches or more of rainfall. An estimated Precipitation (preliminary) April 5-6, 1997 State Climatology Offioe,DNR • Waters, April 1997 1997 spring rains across Minnesota added more trouble after a heavy 1996-1997 snow year. Page 69 Flood Facts ♦ In 1911, Henne- pin County saw the most precipi- tation ever for one year, with 40.15 inches or rain. Records date back to 1891. ♦ Flash floods are also caused by ice jams on rivers in conjunction with winter or spring thaw, or occasionally even a dam break. yil��I Flooding around the Crow River in Day- ton, MN. ♦ Electrocution is a major cause of death during floods. This hap- pens due to elec- trical currents passing through the water from downed power lines and electri- cal wires. SEMONONE Risk Assessment E4P 7,000 homes were reported with water damage and an estimated $25 million dollars in damage was done. 0 !_--n___,Counties ----Townships W Municipalities n ru[�.awn A L.f�'AaR,f .[a �fb f1l m r. N � if Y, I�•LOYf�[.... � � .e.. Weighing Rain Gauge �'----^---•--�' - - f—� -r--•y The July 23`d & 24th, 1987 thunderstorm event that dropped over io inches of rain to much of Hennepin County. Source: Minnesota State Clima- tology Office. Another event occurred on July 1, 1997 severe thunderstorms deposited very heavy rainfall on portions of Hennepin County. Rainfall amounts in less than one hour included 4 inches in Brooklyn Center, 3.5 in St. Louis Park and 2.9 inches in Minneapolis. Portions of Interstates 94, 494, and 35 flooded in Minneapolis, floating cars and stranding motorists. Stores inside the Mall of America were also flooded and $5 million dollars in damage was done to Edison High School in Minneapolis. The Minneapolis/St. Paul Page 70 0 Flood Facts ♦ The Flood Dam- age Reduction Grant Assistance Program was cre- ated by the Min- nesota Legisla- ture in 1987 to provide technical assistance to lo- cal government for reducing the damaging effects of floods. .. • Localized flooding in Minneapolis due to heavy rains. ♦ On April 6, 2006 heavy rain over a three hour period caused flash flooding in Bloomington. Interstate 494 was closed for several hours due to the flooding and drainage problems. • SECTIONONE Risk Assessment Airport had to close for 90 minutes due to the severe weather. On June 24 & June 2S, 2003. County wide flooding from extreme rainfall, with rain totals between 5-10 inches caused flash flooding along the south shore of the Crow River, where property damage was reported. The highest rainfall totals were on the north end of the County, including reports of 10 inches in Rogers and Hassen Township. When we talk about floods we need to talk about floodplains. A floodplain is a nearly flat land adjacent to a stream or river that __ ~ experiences occasional or periodic z flooding. It includes the floodway, -- -- --� which consists of the stream channel and adjacent areas that carry Heavy rainfall in Hennepin flood flows, and the flood fringe, County on June 24 & 25, 2003 which are areas covered by the flood, but which do not experience a strong current. Page 5 shows a map of both the 100 & 500 year flood zones within Hennepin County. Parts of I-494 in Bloomington inundated with floodwaters after heavy rainfall on July 23-24, 1987. Page 71 Watershed Facts ♦ The Bassett Creek Watershed exceeds 40 square miles and is divided by four major subwater- sheds. ♦ Nine Mile Creek Watershed Dis- trict is approxi- mately 50 square miles in surface area and encom- passes the land area tributary to Nine Mile Creek. Elm Creek Wa- tershed is part of the Blue Thumb Program, an out- reach program to meet water qual- ity goals and to meet the federal Clean Water Act mandates. 11KIv i e .1, 1. 4 yr • L fGA CLEAN MIER' ♦ The Pioneer - Sarah Creek Wa- tershed covers approximately 70-5 square miles and lies within western Henne- pin County. SELMONONE Risk Assessment Watersheds A watershed is an area of land that catches rain, snow, and any other forms of water and drains to a lake, stream, wetland or groundwater. Watersheds come in all different shapes and sizes. Smaller watersheds drain into larger watersheds, much like a creek drains into a river. Some watersheds cross county, state, even international borders. The major watershed districts in Hennepin County are: Bassett Creek Watershed Management Commission, Elm Creek Watershed management Commission, Lower Minnesota River Watershed District, Mississippi River Watershed Management Organization, Nine Mile Creek Watershed District, Pioneer -Sarah Creek Watershed Management Commission, Richfield - Bloomington Watershed Management Organization, Riley Purgatory Bluff Creek Watershed Commission, Shingle Creek Watershed Management Commission, West Mississippi River Watershed Management Commission. WEST _ MISSISSIPPI ELM CREEK 1 RIVER r - _ SHINGLECREEK 7 i ! PIONEER -SARAH CREEK BASSETT CREEK MIDDLE M]SSISSIPPI "RIVER MINNEHAHACREEK ti 1 _J� NINEk"- _MILE CREEK RILEY- PURGATORY- RICH FIELD- !BLUFFCREEK'- BLOOMINGTON LOVER MINNESOTA RIVER i Hennepin County Watershed Districts X Page 72 SECTIONONE Risk Assessment Probability Low Impact Overall Hazard Ranking: Flooding Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability Low Impact Moderate Impact t Moderate Probability Moderate Probability Moderate Probability pact Moderate Impact High Impact ability L Low Probability Low Probability pact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability Low Impact Moderate Impact., Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact • Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: LJ High Probability High Probability Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability `'' I G - i`obability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 73 Hazmat Facts ♦ From 1993-2006 the top seven hazardous mate- rials involved in releases were: 1) flammable liq- uids, 2) corrosive materials, 3) poi- son materials, 4) infectious sub- stances, 5) com- bustible liquids, 6) non- flammable com- pressed gases, and 7) miscella- neous hazardous materials. ♦ From 1991 to 2006 there were 560 hazardous materials releases reported to the National Re- sponse Center for Hennepin County. ♦ The hazardous material involved in most releases for Hennepin County between 1991 and 2006 was Oils (Hydraulic, cool- ing, motor). SECTIONONE Hazardous Materials 3.2.6 Hazard Description Chemicals are found everywhere. They purify drinking water, increase crop production, and simplify household chores. But chemicals can also be hazardous to humans or the environment if used or released improperly. Hazards can occur during production, storage, transportation, use, or disposal. The environment is at risk if a chemical is used unsafely or released in harmful amounts where people live, work, or play. Risk Assessment Hazardous materials are chemical substances, which, if released or misused can pose a threat to human health and safety and the environment. These chemicals are used in industry, agriculture, medicine, research, consumer goods, and in the home. Hazardous materials may be in the form of explosives, flammable and combustible substances, poisons, and reactive materials. Hazardous materials are routinely transported through the county via truck, railroad, waterway, and pipelines. The majority of chemical accidents occur in the home from misuse of flammable or combustible materials; however, these are typically small-scale accidents affecting individuals. Larger incidents involving hazardous materials typically occur because of accidents at industrial facility or during transportation. The presence of a hazardous material may or may not be readily evident. Some hazardous materials do not have an odor or taste. Some hazardous materials can cause immediate physical reactions such as nausea or watering eyes. History Of the hazardous materials releases within the county, none resulted in immediate fatalities and most injuries were minor in nature. Most incidents happened at fixed sites, but incidents involving transported materials tends to be more complex and potentially dangerous, since they occur in less controlled environments. EO [is] H Page 74 0 Hazmat Facts ♦ The 2008 Emer- gency Response Guidebook is pri- marily a guide to aid first respond- ers in quickly identifying the specific or ge- neric hazard of the materials in- volved in the in- cident, and pro- tecting them- selves and the general public during the initial response phase of the incident. -�-y 2008 I mer�ency t m iaeb(m)k Hazmat Reports In Hennepin a 455 2007 ♦ Varying quanti- ties of hazardous materials are stored, used and manufactured at an estimated 4.5 million facilities in the United States. • SECTIONON E Risk Assessment From 1991 to 2006 there were 560 hazardous materials releases reported to the National Response Center for Figure i Hennepin County. In addition to the hazardous materials reports to the National Response Center, the Minnesota State Duty Officer also reports hazardous materials spills from fixed facilities and transportation incidents. Figure 1 shows hazardous materials spills in Hennepin County since 2000. From 1991 to 2006 the hazardous materials involved in releases listed in order of frequency is provided in the graph below. **The frequency of natural gas line leaks/breaks is under reported. Maple Grove and Plymouth report a combined total of 90 gas line hits per year between 2001 and 2006 as a result of contractors or homeowners striking gas line of various sizes. This number is probably higher across the entire county. Maple Grove Fire Department at a recent Hazardous Materials Training Page 75 Year Hazmat Reports In Hennepin 2008 455 2007 493 2006 569 2005 692 2004 565 2003 446 2002 302 2001 353 2000 347 Maple Grove Fire Department at a recent Hazardous Materials Training Page 75 Hazmat Facts ♦ Chemical manu- facturers are one source of hazard- ous materials, but there are many others, including service stations, hospitals, and hazardous mate- rials waste sites. ♦ Hazardous mate- rials in various forms can cause death, serious injury, long- lasting health ef- fects, and dam- age to buildings, homes and other property. DANGEROUS" //A G ♦ Hazardous mate- rials come in the form of explo- sives, flammable and combustible substances, poi- sons, and radio- active materials. These substances are often released as a result of transportation incidents or chemical acci- dents at plants. Hennepin County Hazardous Materials Releases (1991-2006) in Order of Frequency Product Hazard Class according to Oils (Hydraulic, cooling, motor) Not regulated as hazardous mate - Gasoline Anhydrous Ammonia Natural Gas ** Chlorine Fuel Oil Transformer Oil with PCB's Waste Water Sodium Hydroxide Caustic Potash Copper Sulfate Penta Hydrate Cupric Sulfate Ethylene Glycol Ethylene Oxide Herbicides Hydrochloric Acid Milk Paint Pesticides Propane Refrigerant gases Sulfur Trichloroethylene Flammable liquid Non-flammable compressed gas Flammable compressed gas Poison gas Combustible liquid Miscellaneous Hazardous Materi- Not regulated as hazardous mate - Corrosive Corrosive Miscellaneous Hazardous Materi- Miscellaneous Hazardous Materi- Not regulated as a hazardous ma - Poison gas Not regulated as a hazardous ma - Corrosive Not regulated as a hazardous ma - Not regulated as a hazardous ma - Poison material Flammable gas Non-flammable compressed gas Flammable Solid Toxic substance Em Page 76 SARA Title III Facts ♦ Title III of SARA addresses con- cerns about emer- gency prepared- ness for hazard- ous chemicals. It establishes re- quirements for federal, Tribal/ State, local gov- ernments, and industry, regard- ing emergency planning and "community - right -to -know" reporting on haz- ardous and toxic chemicals. This legislation em- phasizes: helping communities meet their re- sponsibilities in preparing to han- dle chemical emergencies; and increasing public knowledge and access to infor- mation on haz- ardous chemicals present in their communities. r SECTIONONE 302 Facilities Risk Assessment Any facility that has reported an amount equal to or greater than the Threshold Planning Quantity (TPQ) of any "Extremely Hazardous Substance" covered by EPCRA (also known as the Superfund Amendments and Reauthorization Act of 1986) must cooperate in the preparation of the community emergency plan for hazardous materials. EPCRA later became known as SARA Title III, and in Minnesota an enabling order incorporating the provisions of SARA Title III into state law was created. The primary purpose of SARA Title III is to require facilities that have especially hazardous or toxic substances to publicly identify themselves and develop detection systems and emergency response plans for an accidental release, and also to require communities where such facilities are located to have hazardous material emergency response plans, as well. Each state, including Minnesota, is required to have a state emergency response commission to oversee implementation and enforcement of SARA Title III requirements. Each commission is allowed to appoint local committees to assist. In Minnesota, seven Regional Review Committees were formed to assist by, reviewing city and county emergency response plans to i assure they meet SARA requirements. The following maps on pages (5-9) show all 302 facilities located in Hennepin County (Gathered data includes 302 facilities as defined by the Minnesota Division of Homeland Security & Emergency Management). The maps include an overall county map and then by each individual planning group (Lake Minnetonka, Minneapolis, North, and South Groups). Specific 302 facility information is located within each planning group. Page 77 SECTIONONE Risk Assessment 302 Facilities Hennepin County Hazardous Materials Hazardous materials data gathered from the Emergency Planning & Community Right -to- Know Act (EPCRA). Gathered data includes 302 facilities as defined by Minnesota Homeland Security Emergency Management (HSEM). 0 302 Facilifies Hanover, Rockford and Chanhassen 7Q1011, Lake Minnetonka Emergency PlanningAnd Review Commitee Minneapolis - North Hennepin Emergency Planning Group South Hennepin Emergency Mangement Planning Group Map created bythe Hennepin County EP Civision August 3, 20D9. Hennepin County makes no warranty, representation, or guarantee as to the content, accuracy, timeliness, or co rrp lete ness of any of th e i n 1 m etion proud ed herein . 0 1 2 4 I i 1 1 r i -LJ Miles H Page 78 SECTIONON E Risk Assessment n u • • 302 Facilities Hennepin County Hazardous Materials Hazardous materials data gathered from the Emergency Planning & Community Right-to-KnowAct (EP GRA). Gathered data includes 302 facilities as defined by Minnesota Homeland Security Emergency Management (HSEM). e 302 Facilites Hanover, Rockford and Chanhassen Lake Minnetonka Emergency Planning And Review Committee Minneapolis - North Hennepin Emergency Planning Group South Hennepin Emergency Mangement Planning Group Page 79 SECTIONONE Risk Assessment 302 Facilities Hennepin County Hazardous Materials Hazardous materials data gathered from the Emergency Planning & Community Right-to-KnowAct (EPCRA). Gathered data includes 302 facilities as defined by Minnesota Homeland Security Emergency Management (HSEM). 15 302 Facilities Hanover, Rockford and Chanhassen Lake Minnetonka Emergency PI anningAnd Review Committee Minneapolis - North Hennepin Emergency Planning Group South Hennepin Emergency Mangement Planning Group Page 80 u u • SECTIONONE Risk Assessment 342 Facilities a 30217acilities Hanover. Rockford and Chanhassen Hennepin County Hazardous Materials -Lake Minnetonka Emergency Planning And Review Committee Hazardous materials data gathered from the Emergency Planning & Minneapolis Community Right-to•KnowAct (EPCRA). Gathered data includes 302 facilities as defined by Minnesota Homeland Security - North Hennepin Emergency Planning Group Emergency Management (HSEM). South Hennepin Emergency Mangement Planning Group Page 81 SECTIONONE Risk Assessment u 302 Facilities ° 302Facilites Hanover. Rockford and Chanhassen Hennepin County Hazardous Materials Lake Minnetonka Emergency Planning And Review Committee Hazardous materials data gathered from the Emergency Planning & Community Right -to- KnowA ct (EPCRA). Gathered data includes Minneapolis 302 facilities as defined by Minnesota Homeland Security North Hennepin Emergency Planning Group Emergency Management (HSEM). south Hennepin Emergency Mangement Planning Group Page 82 0 SECTIONONE Risk Assessment Overall Hazard Ranking: Hazardous Materials Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability Fiic7,h Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability Fiic7,h Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability I High Probability Low Impact I Moderate Impact Moderate Probability I Moderate Probability Low Impact Low Probability Low Impact Moderate Impact Low Probability Moderate y- Minneapolis Planning Group: h'`Probability High Impact Moderate Probability High Impact Low Probability High Probability High Probability Low Impact Moderate Impact High fmpaet Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 83 Lyme Disease Facts ♦ Lyme disease gets its name from the town of Lyme, Connecti- cut, where the illness was first identified in the United States in 1975. ♦ One of the signs of Lyme disease is a skin rash, that is in the form of a red circular patch about 2 inches in diame- ter that appears and expands around the site of the tick bite. The center may clear as it enlarges, resulting in a "bulls -eye" ap- pearance. The rash may be warm, but it usu- ally is not painful or itchy. ♦ Lyme disease can be treated with antibiotics. Without treat- ment, Lyme dis- ease can cause serious, long- term health prob- lems. SECTION oNE Infectious Diseases 3.2.7 Hazard Description An infectious disease is a disease caused by a pathogen which enters the body and triggers the development of an infection. Infectious diseases have a range of causes, and they can be found all over the world. These diseases are considered contagious or communicable, meaning that they can be passed from person to person. It is also possible for such diseases to spread indirectly through unhygienic conditions, or from animals to people, in which case they are known as zoonotic diseases. Risk Assessment Lyme disease Lyme disease is a tick-borne illness that causes signs and symptoms ranging from rash, fever, chills and body aches to joint swelling, weakness and temporary paralysis. Lyme disease is caused by the bacterium Borrelia burgdorferi. Deer ticks, which feed on the blood of animals and humans, can harbor the disease and spread it when feeding. History This table shows the number of Hennepin County cases of Lyme disease from 2000-2007. To date there have been no Lyme disease deaths in Hennepin County. Is EM Page 84 Year Number of Hennepin County Lyme Disease Cases 2007 196 2006 127 2005 113 2004 149 2003 66 2002 113 2001 69 2000 68 Is EM Page 84 Tuberculosis Facts ♦ Most persons in- fected with TB bacteria never develop TB dis- ease. If TB dis- ease does de- velop, it can oc- cur 2 to 3 months after infection or years later. ♦ In most cases, TB disease can be cured with antibi- otics. Treatment usually involved a combination of several different • drugs. Because TB bacteria die very slowly, anti - TB drugs must be taken for 6 months or longer. ♦ Only active TV disease of the lungs or voice box is conta- gious. The con- tagious period varies from per- son to person, but usually from when the symp- toms begin until the person has completed sev- eral weeks of treatment. • SECTIONONE Tuberculosis Risk Assessment Tuberculosis (TB) is a potentially serious infectious disease that primarily affects your lungs. Tuberculosis is spread from person to person through tiny droplets released into the air. Most people who become infected with the bacteria that causes Tuberculosis don't develop symptoms of the A; sease. History This table shows the number of Hennepin County cases of Tuberculosis from 2000- 2007. To date, there have been no deaths in Hennepin County associated with Tuberculosis. West Nile virus West Nile Virus (WNV) is transmitted by mosquitoes. If you become infected with West Nile virus, you may not experience any signs of symptoms or you may only experience minor ones such as a skin rash and headache. However, some people who become infected with West Nile virus develop a life-threatening illness that includes inflammation of the brain. Wet Nile virus is common in areas such as Africa, West Asia and the Middle East. It first appeared in the United States in the summer of 1999 Page 85 Year Number of Hennepin County Tuberculosis Cases 2007 114 2006 95 2005 99 2004 104 2003 118 2002 128 2001 140 2000 104 with Tuberculosis. West Nile virus West Nile Virus (WNV) is transmitted by mosquitoes. If you become infected with West Nile virus, you may not experience any signs of symptoms or you may only experience minor ones such as a skin rash and headache. However, some people who become infected with West Nile virus develop a life-threatening illness that includes inflammation of the brain. Wet Nile virus is common in areas such as Africa, West Asia and the Middle East. It first appeared in the United States in the summer of 1999 Page 85 West Nile Virus Facts ♦ About one in 150 people infected with WNV will develop severe illness. The se- vere symptoms can include high fever, headache, neck stiffness, disorientation, tremors, vision loss, numbness and paralysis. These symptoms may last several weeks, and neu- rological effects may be perma- nent. ♦ Most often, WNV is spread by the bite of an infected mos- quito. Mosqui- toes become in- fected whey they feed on infected birds. Infected mosquitoes can then spread WNV to humans. ♦ People typically develop symp- toms between 3 and 14 days after they are bitten by the infected mos- quito. SECTIOMONE Risk Assessment H and since then has been found in all 48 contiguous states. Exposure to mosquitoes where West Nile virus exists increases your risk of getting West Nile virus. Protecting yourself from such exposure, such as by using mosquito repellent and wearing clothing that covers your skin, can reduce your risk. History This table shows the number of Hennepin County cases of West Nile virus from 2002-2007. West Nile virus was not discovered in Minnesota until 2002. To date there have been two deaths associated with West Nile virus in Hennepin County. Pandemic Influenza A pandemic is a global outbreak. A pandemic flu is a virulent human flu that causes a global outbreak, or a pandemic, of serious illness. A flu pandemic occurs when a new influenza virus emerges for which people have little or no immunity, and for which there is no vaccine. This disease spreads easily person-to-person, causes serious illness, and can sweep across the country and around the world in very short time. The U.S. Centers For Disease Control and Prevention (CDC) has been working closely with other countries and the World Health Organization (WHO) to strengthen systems to detect outbreaks of influenza that might cause a pandemic and to assist with pandemic planning and preparation. Most recently, health professionals are concerned by the possibility of an avian (or bird) flue pandemic associated with a highly pathogenic avian H5N1 virus. Since 2003, avian influenza has been spreading through Asia. 0 Page 86 Year Number of Hennepin County West Nile Virus Cases 2007 12 2006 5 2005 2 2004 0 2003 3 2002 4 of West Nile virus from 2002-2007. West Nile virus was not discovered in Minnesota until 2002. To date there have been two deaths associated with West Nile virus in Hennepin County. Pandemic Influenza A pandemic is a global outbreak. A pandemic flu is a virulent human flu that causes a global outbreak, or a pandemic, of serious illness. A flu pandemic occurs when a new influenza virus emerges for which people have little or no immunity, and for which there is no vaccine. This disease spreads easily person-to-person, causes serious illness, and can sweep across the country and around the world in very short time. The U.S. Centers For Disease Control and Prevention (CDC) has been working closely with other countries and the World Health Organization (WHO) to strengthen systems to detect outbreaks of influenza that might cause a pandemic and to assist with pandemic planning and preparation. Most recently, health professionals are concerned by the possibility of an avian (or bird) flue pandemic associated with a highly pathogenic avian H5N1 virus. Since 2003, avian influenza has been spreading through Asia. 0 Page 86 0 Pandemic Facts ♦ Vaccine against ordinary flu will not protect against pandemic flu. However, getting your an- nual flu shot is one of several things you can do to keep yourself healthy. ♦ Three pandemics have occurred in the last 90 years, in 1918, 1957, and 1968. Scien- tists predict that another pandemic will happen, al- though they can- not say exactly when. They also do not know if the next pan- demic will be mild, moderate, or severe. ♦ Antiviral drugs are likely to be in limited supply during the next pandemic and will have to be used to best ef- fect according to how the disease develops. • SECTIONONE Risk Assessment A growing number of human H5N1 cases contracted directly from handling infected poultry have been reported in Asia, Europe, and Africa, and more than half the infected people have died. There has been no sustained human -to -human transmission of the disease, but the concern is that H5N1 will evolve into a virus capable of human -to -human transmission. History 1918-1919 Spanish Flu (Hl NI). This flu is estimated to have sickened 20- 40% of the world's population, and over 20 million people died. Between September 1918 and April 1919, 500,000 Americans died. It spread rapidly; many died within a few days of infection, others from secondary complications. The attack rate and mortality was highest among adults 20-50 years old, although the reasons for this are uncertain. 1957-1958 Asian Flu (HM). This virus was A very familiar scene during the 1918 Spanish quickly identified due to Flu Pandemic advanced in technology, and a vaccine was produced. Infection rates were highest among school children, young adults, and pregnant women. The elderly had the highest rates of death. A second wave developed in 1958. In total, there were about 70,000 deaths in the United States. Worldwide deaths were estimated between 1-2,000,000. 1968-1969 Hong Kong flu (H3N2). This strain caused approximately 34,000 deaths in the U.S. and 700,000 + deaths worldwide. This virus was first detected in Hong Kong in early 1968 and spread to the United states later that year. Those over 65 were most likely to die. Page 87 SECTIOMONE Overall Hazard Ranking: Infectious Diseases Risk Assessment Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability a Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact I High Impact North Suburban Emergency Planning Group: High Probability High Probability 1g" ro'M9b ffy' Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability High Probability 1g" ro'M9b ffy' Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 88 Oonizing Radiation Facts ♦ More than 80% of the radiation we are exposed to comes from such natural sources as sunlight, soil, and certain types of rocks. ♦ Beta particles travel through the air for several feet but the pene- trating power is limited. Like Al- ispha particles, Beta particles cause the most serious effects if swallowed or in- haled. ♦ Radioactive con- tamination occurs when radioactive material is depos- ited on or in an object or a per- son. ♦ The three ways to reduce your ex- posure to radia- tion are time, dis- tance and shield- ing. SECTIONON E R a d i o l o g i c a l 3.2.8 Hazard Description Risk Assessment The term radiation refers to such sources as visible light, radio waves, micro waves, as well as to ionizing radiation. In terms of this hazard, we are looking at ionizing radiation. Ionizing radiation can produce charged particles (ions) in any material it strikes. These charged particles can cause damage to molecules, cell or tissues. Atoms that emit ionizing radiation are unstable, or radioactive. Radioactivity is the process in which atoms attempt to become stable by emitting radiation. The three types of ionizing radiation of concern are Alpha particles, Beta particles and Gamma rays. Alpha particles are high energy charged particles that move only a couple of inches in air and are unable to penetrate the skin. Internally alpha particles can cause significant damage. Beta particles are high speed, charged particles with a moderate penetrating power. Beta particles can travel several feet in air and require about 1/8 inch of so of aluminum to stop them. Some highly energetic betas may penetrate skin and tissue and are considered to be an internal and external hazard. Gamma rays are pure energy and can travel tens of meters at the speed of light. Gamma rays and X-rays are identical in nature once they leave the atom. Gamma rays originate in the nucleus of the atom and X-rays originate from the Aluminum t.eadl electron shell. POW roil concrete Gamma rays are the most penetrating Alpha type of radiation partials and are considered am both an internal and pa`sC1° external hazard. Gamma ray The penetrating power of Alpha, Beta, and Gamma radiation Page 89 SECTIONONE Risk Assessment Ionizing Radiation 0Facts A person's exposure to radiation is measured in units called millirem. A millirem measures the effects of radiation on the human body much as ♦ A person exposed degrees measure temperature. In the United States, a person's average to radiation is not exposure to radiation is about 360 millirem per year. Roughly 300 millirem necessarily con- taminated with come from natural sources of radiation, and 60 millirem come from man- radioactive mate- made sources, primarily medical procedures. rial. A person Sources of radiological material can be found in many locations include who has been exposed to radia- fixed facilities (examples: industries, clinics, labs and universities), tion has haddi ra- transportation routes, dirty bombs, and nuclear power plants. The dioactive waves Monticello and Prairie Island Nuclear Power Plants are both located within or particles pene- 50 miles of Hennepin County. This means that we are located in the trate the body, Ingestion Pathway Zone of both facilities. The principle sources of like having an x- exposure from an accident would be the ingestion of contaminated food ray. and water. Page 4 of this profile shows a map of the 50 -mile Ingestion ♦ In order for there to be a radioac- tive release into the environment from the Monti- cello Nuclear Generating Plant, three barriers need to be bro- ken: the Reactor Fuel Cladding, the Primary Coolant System, and the Contain.Am- j11WL_1AA - Pathways. Ingestion exposure remains a longer-term problem because vegetables, fruit trees, and grains may take up radionuclides from the soil. They may also be ingested by wild game and fish that may in turn, be eaten by humans. Monticello Nuclear Generating Plant in Monticello, MN. Another source of radiological materials could come from a radiological dirty bomb or radiological dispersal device (RDD), which consists of radioactive material combined with conventional explosives. They are designed to use explosive force to disperse the radioactive material over a large area, such as multiple city -blocks. Around the world, there are many sources of radioactive material that are not secure or not accounted for. Rogue nations and/or terrorist groups can obtain these materials for dirty bombs. These explosive weapons may initially kill a few people in the immediate area of the blast but are used primarily to produce psychological Page 90 Ionizing Radiation Facts ♦ Hennepin County hosts a Reception Center at Rogers High School for evacuees of Sher- burne and Wright Counties during a radiological re- lease at the Mon- ticello Nuclear Generating Plant. ♦ Amounts of ra- diation released in the environ- ment are meas- ured in units called curies. However, the dose of radiation that a person re- ceives is meas- ured in units called rem. ♦ Because of other factors, it is not uncommon for a person to receive far more than the average of 360 millirem per year. Things that can affect a par- ticular person's annual radiation exposure level include airplane travel, dental and medical x-rays, and occupation. • SECTIONONE Risk Assessment rather than physical harm by inducing panic and terror in the target population. Their use would also result in costly cleanup for decontamination. Fixed facilities and road/rail transportation routes can also be sources of radioactive materials Fixed facilities such as Honeywell, the University of Minnesota, the Hennepin County Medical Center, and Northern States Power all have sources of radiation that could potentially cause exposure problems. Companies and universities are required to manage radioactive materials in compliance with Title 10, part 20 of the Code of Regulations. This is one of many fixed facilities in Hennepin County. Road/rail transportation routes can be a source of radioactive materials. Because strict packaging requirements are used in the shipment of radioactive materials, accidental spills or releases of these substances seldom occur. Radiological History To date, there have been no large scale radiation incidents in Hennepin County. Page 91 SECTIONONE Risk Assessment 50 Mile Ingestion Pathway Zones (IPZ) Monticello & Prairie Island Nuclear Generating Plants .7 Page 92 r Is SECTIONONE Overall Hazard Ranking: Radiological Risk Assessment Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability Low Impact High Probability Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability Low Impact High Probability Moderate Impact High Probabi i y Hi h Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability Low Impact High Probability Moderate Impact High Irnpact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability 7,11 Nigh Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 93 Terrorism Facts ♦ Terrorists often use threats to: create fear among the public, try to convince citizens that their govern- ment is powerless to prevent terror- ism, and get im- mediate publicity for their causes. ♦ High risk targets for acts of terror- ism include mili- tary and civilian government fa- cilities, interna- tional airports, large cities, and high profile land- marks. ♦ Acts of terrorism include threats of terrorism, assas- sinations, kidnap- pings, hijackings, bomb scares and bombings, cyber attacks, and the use of chemical, biological, nu- clear, and radio- logical weapons. SEMONONE Risk Assessment Terrorism 3.2.9 Hazard Description Following a number of serious international and domestic terrorist incidents during the 1990's and early 2000's, citizens across the United States have paid increased attention to the potential for deliberate, harmful terrorist actions by individuals or groups with political, social, cultural, and religious motives. There is no single, universally accepted definition of terrorism, and it can be interpreted in a variety of ways. However, terrorism is defined in the Code of Federal Regulations as "...the unlawful use of force and violence against persons or property to intimidate or coerce a government, the civilian population, or any segment thereof, in furtherance of political or social objectives" (28 CFR, Section 0.85). The Federal Bureau of Investigation (FBI) further characterizes terrorism as either domestic or international, depending on the origin, base, and objectives of the terrorist organization. Domestic terrorism involves groups or individuals whose terrorist activities are directed at elements of our government or population without foreign direction. International terrorism involves groups or individuals whose terrorist activities are foreign-based and/or directed by countries or groups outside the United States or whose activities transcend national boundaries. However, the origin of the terrorist or person causing the hazard is far less relevant to mitigation planning than the hazard itself and its consequences. Terrorists utilize a wide variety of agents and delivery systems. Terrorism History Due to security concerns regarding past events in Hennepin County, this information can be requested and may be supplied upon approval. C7 r-: Page 94 0 is • SECTIONONE Overall Hazard Ranking: Terrorism Risk Assessment Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability Ty Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability Low Impact High Probability Moderate Impact High Probability High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability I Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability High Probability High Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability Hi' `Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact Hi h Im act Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 95 Thunderstorm Facts ♦ Thunderstorms may occur singly, in clusters, or in lines. ♦ About 10 percent of thunderstorms are classified as severe—one that produces hail at least one inch in diameter, has winds of 58 miles per hour or higher, or pro- duces a tornado. A severe thunder- storm approaches St. Louis Park, MN. ♦ Warm, humid conditions are highly favorable for thunderstorm development. ♦ There are about 2,000 thunder- storms occurring at any moment across the world. SELMINONE Risk Assessment Thunderstorms 3.2.10 Hazard Description Thunderstorms are by-products of atmospheric instability and occur from cumulonimbus clouds. The are basically rain showers accompanied by lightning and thunder. An average thunderstorm is 15 miles in diameter and lasts for an average of 30 minutes. At any given moment, there are roughly 2,000 thunderstorms in progress around the world. It is estimated that there are 100,000 thunderstorms each year; about 10% of these reach severe levels. Three basic ingredients are required for a thunderstorm to form: moisture, rising unstable air (air that keeps rising when given a nudge), and a lifting mechanism to provide the "nudge". Thunderstorms are a unique hazard because they are sometimes accompanied by heavy rain, gusty winds, hail and can, under the right atmospheric conditions, spawn tornadoes. Thunderstorm Lifecycle 12 10 s 8 v 6 a a 2 0 ---------- 5-8 km— -i t- 8-16 krn Developing Stage Mature Stage r_a-r r runt Dissipating Stage The developing stage of a thunderstorm is marked by a cumulus cloud that is being pushed upward by a rising column of air (updraft). The cumulus cloud soon looks like a tower (called a towering cumulus) as the updraft continues to develop. There is little to no rain during this stage and the stage itself lasts about 10 minutes. -50 40 a -30 -20 12 -10 E 0� 10 E40 Page 96 is • • Thunderstorm Facts ♦ The average height of a thun- derstorm is 35,000 feet. Se- vere thunder- storms can reach heights of 65,000 feet. During severe thunderstorms, updrafts can reach speeds of 100 mph. Down - drafts can often SECTIONONE Risk Assessment The thunderstorm enters the mature stage when the updraft continues to feed the storm, but precipitation begins to fall out of the storm, and a downdraft begins (a column of air pushing downward). When the downdraft and rain -cooled air spreads out along the ground it forms a gust front. The mature stage is the most likely time for hail, heavy rain, frequent lightning, strong winds, and tornadoes. Eventually, a large amount of precipitation is produced and the updraft is overcome by the downdraft beginning the dissipating stage. On the ground, the gust front moves out a long distance from the storm and cuts off the warm moist air that was feeding the thunderstorm. Rainfall decreases in intensity, but lightning remains a danger. Thunderstorm History The recording of thunderstorms is highly dependent on if weather observation stations are in the path of the storm. In regards to Hennepin County, there are two main reporting stations; the Minneapolis St. Paul Airport and in Chanhassen, where the National Weather Service staff and technology house out of. The official reporting station is still the Minneapolis/St. Paul Airport so that it can maintain the climatological record. Other stations around Hennepin County are located at the attain even following airports: Minneapolis Flying Cloud Airport in Eden Prairie and greater speeds the Crystal Airport in Crystal, MN. than that. ♦ On July 23 & As far as weather observations away from airport stations, these July 24, 1987, a observations are more dependent on the public's (Skywarn Spotters) thunderstorm sat observation or local law enforcement. The Minnesota State Climatology over Hennepin Office reports that Hennepin County sees on average, 37.6 thunderstorms a County and year, based on a 67 year average. The highest numbers come during the dropped over 11 months of June and July and November through March being on the low n inches of rain in end of the scale. 24 hours. Two men drowned in the storm, one in his car and an- other after his basement col- lapsed. Page 97 Windstorm Facts • Derechos are as- sociated with a line of thunder- storms that are often "curved" in shape. These bowed out storms are called "bow echoes". Winds during derechos can exceed 100 mph. A "bow -echo" ap- proaches Hennepin County. ♦ On August 6, 1996 a strong windstorm with winds of 65 mph hit Brooklyn Park, MN caus- ing major dam- age to 20-30 homes and up- rooted trees in a three block area. One person was injured from fly- ing glass. SECTIONONE Risk Assessment A thunderstorm towers over Rogers, Minnesota Windstorms Another hazard that comes with thunderstorms is windstorms. Many times when storm damage occurs to buildings, trees or other objects, people automatically say it was a tornado. Although difficult for many to understand, in most years, thunderstorm winds cause more damage, and are more frequent than tornadoes (in 2004, thunderstorm winds produced an estimated $5.5 million in property damage, according to the publication Storm Data). Thunderstorms winds can exceed 100 mph while most common tornadoes winds are generally not this strong. Page 98 C ON • • Thunderstorm Facts ♦ A downburst is created by an area of signifi- cantly cooled air that, after hitting the ground, spreads out in all directions pro- ducing strong winds. An image of a clas- sic downburst from a thunderstorm. ♦ The September 25, 2005 wind- storm that hit northern Henne- pin County caused $130 mil- lion dollars in damage. ♦ On July 17, 1997 a severe thunder- storm with winds in excess of 60 mph caused $88,000 in dam- age to homes in Minnetrista and Independence. SECTIONONE Risk Assessment Thunderstorm winds come in many forms, sometimes from squall lines of thunderstorms and other times in the form of downburst winds. The most frequently encountered type of damaging winds is called straight-line winds. These thunderstorm winds are associated with the leading edge of the rain -cooled outflow, known as the gust front. Although most thunderstorm outflow winds range from 30 to 50 mph, on occasion these winds can exceed 100 mph. Downburst winds are another form of windstorm. A Downburst is created by a column of sinking air that, after hitting the ground level, spreads out in all directions and is capable of producing damaging winds over 150 mph. The damage produced by Downburst winds are similar to, but distinguishable from, that caused by tornadoes. Downburst-producing storms often give little advance indications of the imminent danger on weather radar or to the spotter, so warnings are difficult to issue. Another wind event associated with thunderstorms is a Derecho. A Derecho (pronounced similar to "deh-REY-cho" in English) is a widespread and long lived windstorm that is associated with a band of rapidly moving showers and thunderstorms. Windstorm History Hennepin County sees windstorms on a yearly basis. One of the biggest windstorms to hit the county was a wind -driven hail event that took place on May 15, 1998. A severe line of thunderstorms entered Hennepin County from the southwest and _ caused significant damage to trees, private residence, and public infrastructure. Nothing seemed to be spared in this storm -� with damage done to automobile dealers in Bloomington and ' " •, damage to airplanes at the Minneapolis/St. Paul Airport. Wind speeds ranged from 55-70' ° L mph knocking down thousands of trees in the south metro. An estimated $450 million dollars in �"' • ' damage was done during the '� r. " storm. Straight-line winds enter Hennepin County in 1998, causing extensive dam- age due to both wind and hair. Page 99 Windstorm/ Hailstorm Facts ♦ A very heavy lo- calized wind- storm hit Min- neapolis (especially areas of Lake Calhoun, Lake of the Isles, and Harriet Lake) on June 16, 2006. Two people were injured and major tree and property damage was done. Several sail boats were tipped over on Lake Calhoun. ♦ On August 24, 2006 a hailstorm hit Dayton, MN causing $20 mil- lion dollars in damage. Hail 2.75 inches in diameter dam- aged homes, businesses and vehicles. ♦ The largest hail- stone ever recov- ered was in Aurora, Nebraska with a diameter of 7 inches and a circumference of 18.75 inches. SEMONONE Risk Assessment Another windstorm event took place on September 25, 2005 as a large storm system swept across the northern portion of Hennepin County. Tens of thousands of trees were downed, including some snapped a few feet off the ground. Some neighborhoods were out of power for more than a week as crews had to make massive numbers of repairs. The property damage report of $130 million dollars covers all wind and hail reports. Damage to trees and private residence was reported in Brooklyn Park, Rogers, Hassan Township, Dayton, Champlin, Osseo, Minneapolis, Maple Grove, New Hope, Golden Valley, and in Crystal, where several hangers at the Crystal Airport had metal siding and roofs ripped off. City officials in Brooklyn Park estimated at least 10,000 trees were downed. One person was killed during the storm; a 45 year old man in the north part of Minneapolis died when a large branch landed on him when he left his car. For a graphic map of the windstorm events that have affected Hennepin County, please click look at page 8. H a i 1 C Hail is precipitation that is formed when updrafts in thunderstorms carry raindrops upward into extremely cold areas of the atmosphere. Hail begins as tiny ice pellets that collide with water droplets. The water droplets attach themselves to the ice pellets and begin to freeze as strong updraft winds toss the pellets and droplets back up into the colder regions of the upper levels of the cloud. As the attached droplets freeze, the pellets become larger. In all cases, the hail falls when the thunderstorm's updraft can no longer support the weight of the ice. The stronger the updraft the larger the hailstone can grow. There are various sizes of hailstones, all dependent on the updrafts. Below is a table for estimated size and average diameter: l4J Page 100 0 Hail Facts ♦ June 11, 2001 featured a mas- sive line of hail- storms with hail 3 inches in di- ameter in St. Bonifacius. This widespread hail event also in- cluded the cities of Bloomington, Mound, Eden Prairie, Long Lake, and Edina. $25 million dol- lars in damage was done during the event. Hail has been known to reach diameters as big as softballs. ♦ Large hailstones can fall at speeds faster than 100 mph. is SECTIONONE Risk Assessment ; �- 114" Pea777 112" Plain M&M r— 314" (Severe Criteria) Penny (—— r 71811 Nickel ' 102 (('' tiarter 11/4" Hatf Dollar �— 11/2" Wali7tit.pin(j Ponq Ball 13/4" Golf Ball 2" Hen EUU!Ume 2112" — Tennis Ball 2 314" Baseball F— 3„ Teactip-targe Apple 4" Grapefruit 4112" Softball �— 43/42%-5'1 Computer CD -DVD Hail History The National Climatic Data Center shows that Hennepin County has had an extensive history of hail storms since records began to be recorded back in 1956. Since that time, over 300 hail events have been recorded with an estimation of $505 million dollars in damage. A map of these hail reports can be seen on page 9. L i g h t n i n g Lightning is a gigantic electrostatic discharge (the same as electricity that can shock you when you touch a door knob) between the cloud and the ground, other clouds, or within a cloud). Scientists do not Page 101 SELMONONE Lightning Facts Risk Assessmen ♦ Most lightning know exactly how it works or how it interacts with the upper atmosphere or fatalities and in- the earth's electromagnetic field. Lightning is one of the oldest observed juries occur when natural phenomena on earth. It has been seen in volcanic eruptions, people are caught extremely intense forest fires, surface nuclear detonations, heavy outdoors in sum - snowstorms, in large hurricanes, and obviously, thunderstorms. mer months dur- Lightning is an electrical current. Within a thunderstorm, many small bits of ing the afternoon ice (frozen raindrops) bump into each other as they move around in the air. and evening. All of those collisions create an electric charge. After a while, the whole ♦ The air near a cloud fills up with electrical charges. The positive charges or protons from lightning strike is the top of the cloud and the negative charges or electrons form at the bottom heated to of the cloud. Since opposites attract, that causes a positive charge to build degrees hren- up on the ground beneath the cloud. The ground's electrical charge heft, 6 times hot- times ho- concentrates around anything that sticks u such as mountains y g p� ,people, or ter than the sur- single trees. The charge coming up form these points eventually connects face of the sun. with a charge reaching down from the clouds, and that is when you see the lightning strike. ♦ The rapid heating and cooling of the air near the lightning channel causes a shock wave that results in thunder. ♦ Lightning can occur from cloud -to -cloud, within a cloud, cloud -to -ground, or cloud -to -air. Lightning History Lightning is a usual occurrence in thunderstorms across Hennepin County 0 each year. It is more prevalent during the late spring and summer months. The National Climatic Data Center states that there has been $700,000 dollars in damage and 6 injuries due to lightning strikes in Hennepin County since August of 1995. According to Storm Data, Minnesota ranks 32 (out of 50 states) in lightning deaths from 1998-2008. Lightning strikes a northern portion of Minneapolis. Page 102 011 SECTIONONE 40 0 Risk Assessment Hennepin County Wind Speed «utd Speed in Knots I Unknown Speed froin 1.955 thri-nigh 2006 60 to 60 knots Wind speeds were recorded at National Weather Service (NWS) weather data centers. oil, 61 to 70 knots The following map utilizes representation to show all of the recorded wind speed. ` 71 to 90 knots The location may not directly correspond with the record but is located within the area of a weather data center. ERS HASSAN TVI,SP. i I 61'JFIELC) Ri"n'KFC,FD CORgoRIN I I fIRE1fTO I MEDINA �DEPENDENCEMAPL LAN A, TON C AMYLI Q II I SE, BROOKLYN PARK (I DROOF?L%N MAP LEGRO4E -- - I --'.— -• rr i CENTER PLYMOUTH OP Y` I I I i�a R�61r� MEDICINE�L i pp��f^ I I WCDE N'dGLL E I I I I 1-01.115 PAF I L ,r h � NETONKA I �I - IEDINPRAFIE I I I III I I: CHANHAS— BLOOMINGTON I I II �II l I I �1 I II III Y Iapcxeatedbythe HexntipanC, tyEPDi, tii— Cet:berl2,2)09.Hexu,epinCcuntynulxsm 0 125 2.5 5 a'uxaxty, rewesexdatica� or txar.nttae as to the oDrtext, xCxxac;, hntiluYss, xC=Oetexess of anyoftl� ir&�amutipnprovideilwmm PJIiles Page 103 SECTIONONE Risk Assessment Hennepin County Hail Diameter Haul Di-xneter in Incites fi•oni 1950 through 2008 b 1.01- 2.00 Hail diameter were recorded at National Weather Service (NWS) weather data centers. A 2.01 - 3.00 The following map utilizes representation to show all of the recordedhail diameters. The location may not directly correspond with the record but is located within A 3.01 - 4.00 the area of a weather data center. DAYTON iROG RS 1� HPC PN TSP. i:H Wv1 F' LI I'J ANO — REtI'dFIE '+� CGRCOR bN BROOKL','PJ�RK PA _ . F, -,PDL --- Ll I � MAPLE GRG`dE FCOI;L _ENTER r RE If TO MEDINA �I PL',AW ITH M1 t'�FEJ� -I ST ANTHONY INDEFEHDENCEIjR6E31wt A z�,I:,;EDICIr ,_ iE v %j�� OLE,EI'•J `::'LLE'r !] �' .� A n r. L Wit, .fes' ---- _ i. — —1 MINNEAPOLIS `T LOUIS PARK LZ. ah A =IU - � 1.'P KI P• S „ EDINA aH: T �jr�l' L'NETOIJK �A __FEvr�_ L , �EDEIq PRAJRI€ CHANHASSE il IVLL� i ._t RICHFIELD BLOOMINGTON l �� V t� Z1 J \ - IJfap createdby the Heraepin CountyE:P Avisian Octcb er 12, 2DC9. Hennepin C aunty ma ms m war—tr, represerdaticxcr guarantee as to the 0 1.25 2.5 5 mrdert -curacy, tinielimss, crcarnplemress I I I I I I I I ofanyof tie ireormat enpmv ded herein Mt1eS Page 104 E SECTIONONE is • Risk Assessment Overall Hazard Ranking: Thunderstorms Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability ' . rd ility Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability 1i�g a Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability High Probability 1i�g a Low Impact Moderate Impact Nigh Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: ` � I ii h Orobab' 't High Probability High Probability !� Y Low Impact Moderate Impact ;High Imp Moderate Probability Moderate Probability Moderate Probability Low Impact Low Probability Moderate Impac, Low Probability High Impact Low Probability Low Impact I Moderate Impact I High Impact I Page 105 Hennepin County Tornado Facts ♦ The September 16, 2006 tornado that hit the city of Rogers was on the ground for 8 miles, was at its maximum, 100 yards in width, and caused $30 million in prop- erty damage. Radar Image of the Rogers Tornado ♦ The September 21, 2005 Brook- lyn Park tornado touched down just west of the intersection of Oxbow Creek Dr & Kyle Ave. The Brooklyn Park tor- nado on September 21, 2005. SELMONONE Risk Assessment T o r n a d o 3.2.11 Hazard Description A tornado is a violently rotating column of air extending between, and in contact with, a cloud and the surface of the earth. Literally, in order for a vortex to be classified as a tornado, it must be in contact with the ground and the cloud base. Tornadoes are nature's most violent storms. Spawned from powerful thunderstorms, tornadoes can cause fatalities and devastate a neighborhood in seconds. A tornado appears as a rotating, funnel -shaped cloud that extends from a thunderstorm to the ground with whirling winds that can reach up to 200 miles per hour. Damage paths can be in excess of one -mile wide and 50 miles long. Every state is at some risk from this hazard. Some tornadoes are clearly visible, while rain or nearby low -hanging clouds obscure others. Occasionally tornadoes develop so rapidly that little, if any, advance warning is possible. The United States has the highest incidence of tornadoes worldwide, with more than 1,000 occurring every year. This is due to the unique geography that brings together polar air from Canada, tropical air from the Gulf of Mexico, and dry air from the Southwest to clash in the middle of the country, producing thunderstorms and the tornadoes they spawn. Tornado History There have been over 40 tornado touchdowns in Hennepin County since 1820. Of those tornadoes, the most significant was the May 6 tornado outbreak of 1965. A map of Hennepin County tornado touchdowns can be found on page 4. The 1965 Twin Cities tornado outbreak occurred in and around Hennepin County and is nicknamed "The Longest Night" and is most often remembered for the two EF4 tornadoes that hit Fridley, MN. Thirteen people were killed in the six tornadoes that touched down that day. Four tornadoes were rated F4, one was rated F3, and the other was rated a F2. H X Page 106 0 0 Hennepin County Tornado Facts Tornadoes have produced more than $190,000 in property damage to Hennepin County since January 1, 1960. ♦ The worst tor- nado outbreak in the history of the Twin Cities oc- curred on May 6, 1965 and in- cluded Hennepin County. The cit- ies of Deephaven, Min- netrista, Golden Valley, and Min- neapolis were all hit. In Hennepin County alone, 6 people were killed and 138 injured. Photo of the Fridley tor- nado on May 7, 1965. One of six tornadoes that touched down in the Twin cities that day. SECTIONONE Risk Assessment This event caused more dollar damage than any single weather event in Minnesota history at the time. It was also voted a tie for the "fifth most significant Minnesota Weather Event of the 201h Century" with the 1965 Mississippi & Minnesota River Flooding by the experts convened by the Minnesota Climatology Office. Another outbreak of tornadoes struck on July 18, 1986 in Brooklyn Park. Known as the "Television Tornado", the Brooklyn Park tornado would eventually strike Brooklyn Park before entering into Anoka County and hitting the cities of Fridley, Spring Lake Park, Arden Hills, and Coon Rapids. The Brooklyn Park tornado was a fully televised event, covered by KARE- 11 helicopter pilot Max Messmer and his cameraman Tom Empey. Both staff members were already in the air en route to another story when the F2 began to develop in Brooklyn Park. The tornado itself was an F2 and moving slowly (no faster than 10 to 15 miles an hour), allowing the cameras to capture images that would later be studied by scientists to better understand the qualities of the tornado. There were no deaths and there was relatively little damage during the tornado. The worst damage was at Springbrook Nature Center in Fridley. The tornado spent more than 10 -minutes in the nature center, uprooting 5,000 to 10,000 trees, including thousands that were a century old. Damage there was estimated as high as $250,000. Portions of the park damage were left to help teach about the destructive power of tornadoes. Total property damage from the storm was estimated at $650,000. The Fujita Scale The original Fujita Scale was devised in 1971 by Dr. Ted Fujita of the University of Chicago. It gave ratings of FO to F5 based upon the type and severity of damage that the tornado produced. At that time there were very few actual measurements of tornado wind speeds that he could relate to the damage, but he used them together with a lot of insight to devise approximate wind speed ranges for each damage category. In subsequent years, structural engineers have examined damage from many tornadoes. They use knowledge of the wind forces needed to Page 107 SEMONONE Risk Assessment Hennepin County Tornado Faits damage or destroy various buildings and their component parts to estimate the wind speeds that caused the observed damage. What they found was ♦ On June 18, 1939 a destructive tor- that the original Fujita Scale wind speeds were too high for categories F3 nado struck Cor - and higher. This may have led to inconsistent ratings, including possible coran, Maple overestimates of associated wind speeds. Grove, and Champlin, before With these inconsistent ratings in mind, a panel of meteorologists and crossing into engineers convened by the Wind Science and Engineering Research Center Anoka County. at Texas University, devised the new Enhanced Fujita Scale, which became In all, 200 people active as of February 1, 2007. The EF Scale incorporates more damage were injured and indicators and degrees of damage than the original F Scale, allowing more 9 lives were detailed analysis and better correlation between damage and wind speed. taken. The enhanced Fujita map can be found below. ♦ A tornado ap- pears as a rotat- ing funnel - shaped cloud that extends from a thunderstorm to the ground with whirling winds that can reach 200 mph. Dam- age paths can be in excess of one mile wide and 50 miles long. ♦ Some tornadoes are clearly visi- ble, while rain or nearby low - hanging clouds obscure others. Occasionally, tornadoes de- velop so rapidly that little, if any, advance warning is possible. Picture of a tornado crossing just to the west of the junction of Highway 7 and 101 on May 6, 1965. H Page 108 SECTIONON E 4) 0 11 Risk Assessment Hennepin County Tornadoes Touchdowns Nvith Fujita Ranking from 1820 through 2009 -Ow Generalized tornado path with EF ranking from NOAA Very generalized tornado path with EF ranking based on T. Grazulis publication Page 109 SECTIONONE Overall Hazard Ranking: Tornado Risk Assessment H Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability ability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability WHigh Probability Low Impact Moderate Impact High Ir Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability Low Impact Moderate Probability Low Impact Low Probability Low Impact High Probability Moderate Impact Moderate Probability Moderate Impact Low Probability Moderate Impact High Impact Moderate Probability High Impact Low Probability High Impact Minneapolis Planning Group: High Probability High Probability WHigh Probability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact L� Page 110 • Air Line Facts ♦ In 2008 MSP served 34 million passengers and accommodated 450,044 landings and takeoffs. ♦ MSP ranks 16th in North America for the number of travelers served and has the 12th busiest airfield in the United States. •♦ MSP is a valu- able economic generator, sup- porting more than 150,000 jobs, $10.7 billion in business revenue, $6 billion in per- sonal income, $1.3 billion in local purchases, and $626 million in state and local taxes. Mitigation Plan Risk Assessment Transportation(Air,roadway, railway/transit, and pipeline) 3.2.12 Transportation Description ,MCA Transportation systems available in Hennepin County include air, rail, roadway, pipeline, and transit. All of these systems and supporting transportation resources provide services on a national, regional, and local basis and are critical to local, regional and national commerce. While highway traffic accidents are a daily occurrence, transportation accidents with impacts to local commerce or resulting in transportation diversions are fairly rare. Air Minneapolis/St. Paul International Airport On average, approximately a half -million landings and takeoffs (aircraft operations) occur at Minneapolis/St. Paul International Airport (MSP) every year. In 2008, MSP accommodated just under that with 450,044 operations. Most operations occur during daytime hours, however, to accommodate cargo business and flight schedule changes, some overnight operations are necessary. Regarding MSP Airport (technically, it's partially in Hennepin County and partially in Ramsey County), there has never been an airplane crash involving an air carrier. There have been two military aircraft accidents dating back to the 1950s Incident History On Tuesday, June 5, 1956, an Air Force F89 Scorpion fighter jet carrying Page Ill Air Line Facts ♦ The Minneapolis/ St. Paul Airport is also home to the Minneapolis/ St. Paul Joint Air Reserve Station, supporting both Air Force Re- serve Command and National Guard Flight Op- erations. ♦ The Minneapolis/ St. Paul Airport has two termi- nals, both of which are named for famous Min- nesotans: The Lindbergh Ter- minal (named after aviator Charles Lind- bergh) and the Humphrey Ter- minal (named for former US Vice President Hubert Humphrey). Aerial view of MSP In. ternational Airport Mitigation Plan Risk Assessment 104 live rockets crashed into a car on a road adjacent to what is now known as Minneapolis -St. Paul International Airport. A 38 -year-old Minneapolis woman and her 5 - year -old daughter were killed. Four days later on Saturday, June 9, 1956, a F9F4 Jet crashed into a row of homes north of the of Wold Chamberlain field at 9:30 a.m. The jet left a military formation to make an emergency landing and hit the street in front of 5804 and 5808 Forty -Sixth Avenue S, near the Firefighters rushed to extinguish a fire in one of main gate of the Navy base. the houses hit by debris (Minneapolis Star The plane then bounced into the photo) home of Donald and Jane Garles of 5820 Forty -Sixth and exploded, sending the plane and fuel over the neighborhood. In all, six people were killed and nine others wounded. At a press conference at Navy headquarters, Col. Frank F. Gill, commanding officer of the naval air stations, explained that Armstrong and two other pilots had taken off on a tactical training mission. According to Gill, the pilot appeared to be having some trouble with Before the 1960s, numbers and arrows were some- times added to photos to help explain what hap- pened. Here's the original caption from this Min- neapolis Star photo: Jet plane struck the ground (1), bounced and struck again (2), then crashed into house (3). the plane and was breaking formation to head back to the airport. Page 112 • • Air Line Facts ♦ Flying Cloud Airport is classi- fied as a "minor" by the Metropoli- tan Council and is one of six re- liever airports in the Twin Cities metropolitan area. Overhead shot of Flying Cloud Airport in Eden Prairie, MN. ♦ Flying Cloud Airport was first used during World War II to train U.S. Navy pilots. Navy planes that were stationed at Wold - Chamberlain Field used the grass strip to make practice approaches. Mitigation Plan Risk Assessment Some 20 or more children were at play when the plane crashed, some of them were littered with debris and flaming fuel. Five of them were reported in "very critical" condition with burns. One other child was taken to the same hospital with less severe injuries. Three more were taken to the Navy infirmary at the airport. Flying Cloud Airport Flying cloud Airport is located in south central Eden Prairie. The general aviation airport that serves single engine piston, twin - engine piston, turboprop and corporate turbojet aircraft is owned and operated by the Metropolitan Airports Commission (MAC). Flying Cloud is classified as a "minor" airport by the Metropolitan Council and is one of six reliever airports in the Twin Cities metropolitan area. The airport has three runways and each year has approximately 120,000 take -offs and landings. The following is the number of take -offs and landings over the past five years: ♦ 2004 - 163,470 ♦ 2005 - 157,712 ♦ 2006 - 144,178 ♦ 2007 - 118,178 ♦ 2008-116,696 Incident History Flying Cloud Airport has witnessed a number of aviation crashes over the years. Below is a list of the crashes that were provided to us by the Metropolitan Airports Commission (MAC). ♦ On October 5, 2009 at 1233 central daylight time, a twin -engine Temco D -16-A, N124N, sustained substantial damage when it impacted trees and terrain near Eden Prairie, MN, after a loss of Page 113 mitigation Plan Risk Assessment Airline Facts J ♦ Crystal Airport is power of one engine during an en route climb. A post -impact fire a reliever airport consumed part of the airplane. Non -Fatal. of the Metropoli- damage on impact with terrain while on its base leg to runway 28L tan Airports ♦ On August 12, 2009 at 1138 central daylight time, a Beech E18S, Commission and has three paved N3038C, collided with the terrain following a loss of control while runways, one turf circling the Flying Cloud Airport in Eden Prairie, MN. Both the runway, and two commercial rated pilot and the student pilot passenger were fatally non -precision injured. The airplane was substantially damaged by impact forces instrument ap- proaches. and post impact fire. 2 Fatal. An Aerial shot of Crystal ♦ On July 15, 2007 at 9005 central daylight time, a Mooney M -20J, N4785H, collided with the terrain following a loss of control during takeoff at the Flying County Airport, Eden Prairie, MN. The private pilot received minor injuries. The airplane was substantially damaged. Non-fatal. Airport in Crystal, MN ♦ On October 9, 2004, about 0822 central daylight time, an experimental amateur -build Buss Roterway Exec helicopter, ♦ The Metropolitan N82DR, operated by a commercial pilot, sustained substantial Airports Com- damage on impact with terrain while on its base leg to runway 28L mission operates six general avia- at Flying Cloud Airport. Non -Fatal. tion airports known as ♦ On July 2, 2003, at 2242 central daylight time, an experimental "reliever air- amateur -built, Debay Dragonfly Mark II, N25JD, owned and ports" because they help relieve piloted by a private pilot, sustained substantial damage when it congestion at impacted trees and terrain near Flying Cloud Airport (FCM), Eden MSP. Prairie, Minnesota. Non -Fatal. r -t I8 aq�Hra • On July 19, 2001, at 1730 central daylight time, a Mooney M -20R, t ' f N2HW, owned and operated by a private pilot, was destroyed 4m t when it impacted trees and a road in a residential area 1 1/2 miles 7c o 4t west of the Flying Cloud Airport (FCM), Eden Prairie, Minnesota. o� �ti 9,gPOa� G A post -crash fire ensued. 1 -Fatal. ♦ On November 25, 1988, at 1839 central standard time, a Piper PA0 - Page 114 Mitigation Plan Risk Assessment -. --1♦ On August 21, 1996, at 1330 central daylight time, a Beech C-23, . � Val N18780, operated by General Aviation Services, sustained substantial damage during a hard landing at the Flying Cloud Airport, Eden Prairie, Minnesota. Non -Fatal. • ♦ On December 10, 1995, at 2330 central standard time, a Beech Page 115 Airline Facts 28-R200, N2988R, was substantially damaged when it swerved off ♦ The Humphrey the runway during a full stop landing and impacted the VASI Terminal used to handle all inter- lights. The private pilot and two passengers were not injured. Non - national arrivals, Fatal. but is now used mostly for charter♦ On September 8, 1988, at 1900 central daylight time, a Culver - airlines and other carriers, includ- Revolution Mini 500, N6269R, piloted by a private pilot, was ing Sun Country, substantially damaged when it collided with the ground shortly AirTran, and after a total loss of power while hovering. Non -Fatal. Southwest. It Airlines out of Minneapolis/St. ♦ On November 25, 1988, at 1839 central standard time, a Piper PA - Paul Airport 28-8200, N2988R, was substantially damaged when it swerved off serve 131 non- the runway during a full stop landing and impacted the VASI stop markets from MSP, in- lights. The private pilot and two passengers were not injured. Non - cluding 116 do- Fatal. mestic and 14 international markets. Com- • On February 8, 1998, at 1440 central standard time, a Beech C-23, pared to other N18766, piloted by a private pilot, was substantially damaged metropolitan ar- during a collision with a hangar, chain link fence, ditch and eas in the United highway during a go -around maneuver following a bounced States, only Den- landing on runway 18 (2,691'X 75', dry asphalt) at the Flying ver serves slightly more Cloud Airport, Eden Prairie, Minnesota. Non -Fatal. non-stop markets per capta. On September 8, 1996, at 1655 central daylight time a Cessna 182, N5401 B, sustained substantial damage during a forced landing. The pilot reported a loss of engine power and attempted to reach the runway, however he landed short of the runway. Non -Fatal. -. --1♦ On August 21, 1996, at 1330 central daylight time, a Beech C-23, . � Val N18780, operated by General Aviation Services, sustained substantial damage during a hard landing at the Flying Cloud Airport, Eden Prairie, Minnesota. Non -Fatal. • ♦ On December 10, 1995, at 2330 central standard time, a Beech Page 115 Mitigation Plan Risk Assessment Transportation Facts B90, N551SS, operated by Executive Aviation, Eden Prairie, ♦ County Roads Minnesota, collided with a hangar during taxi from landing at the generally serve Flying Cloud Airport, Eden Prairie, Minnesota. The airplane was cities with popu- substantially damaged. Non -Fatal. lations under 5,000 population and they carry ♦ On February 13, 1994, at 1633 hours central standard time, a Piper low levels of traf- Tomahawk PA -38-112, N23797, operated as a rental aircraft by fic volumes. Ap- Thunderbird Aviation, Inc., of Minneapolis, Minnesota, impacted proximately 40 static lines between power poles on final approach to Runway 27R centerline miles of the county at Flying Cloud Airport. A section of the right wing leading edge roadway system and upper surface departed the aircraft. The aircraft came to rest are designated as approximately 300 feet further on the flight path and was county road. destroyed. The pilot was seriously injured. Non -Fatal. ♦ The economic vitality and the • On December 23, 1993, at 1207 central standard time, a Beech overall quality of C23, N9228S, operated by General Aviation Services, collided life in the county with the terrain during a forced landing following a loss of engine are linked to the provision of ex- power. The power loss occurred while the airplane was circling to cellent quality land on runway 27L at the Flying Cloud Airport, Eden Prairie, transportation Minnesota, while on an instrument training flight. Non -Fatal. systems includ- ing roadways, transit systems ♦ On April 22, 1990, at 20:45 central standard time, a Lake, and facilities, N9309N, while attempting to land, collided with a deer during the trails/paths, and landing flare. The right wing was sheared off, with the gear walkways. attached and the aircraft cart wheeled to a stop. Non -Fatal. ♦ Based on statis- tics of the Metro- • On April 16, 1990, at 1845 central standard time, a Cessna 210, politan Council, N6182R, attempted to land under gusty, variable wind conditions Hennepin County when the private pilot lost directional control and veered off the accounts for al- most half of all runway. The pilot attempted a go -around, but the aircraft bounced trip ends made in several times and the wing struck the terrain and cart -wheeled. the region. Non Fatal. H, r01 Page 116 0 Transportation Facts ♦ Principal arterials include interstate highways and certain major state trunk high- ways. Principal arterials serve major centers of activity, the cor- ridors having the highest traffic volumes, and the longest trip lengths. Example of a principal arterial would be High- way 100. This picture is taken just south of Glen- wood Avenue. ♦ Minor arterials make up the class of roadways in- cluding a few minor state high- ways, most county roads, and some major city streets. Mitigation Plan Risk Assessment Roadway/Bridges Roadway Hennepin County is likely to 45 _ d experience an increase of accidents along our highways as congestion increases. Many accidents involved rain, high speeds, and heavy traffic. These conditions are certainly not unique, as rain, snow, and fog are common, especially during the winter months, while heavy traffic and high speeds are common throughout the year. Currently, Hennepin County has over 2,000 lane miles and it is estimated that motorists traveled 2.0 billion miles on the county highway system in 2008. Crash data is obtained annually from the Minnesota Department of Public Safety. Basic statistical analysis includes the review of countywide crash rates and comparisons to other crash rate trends. Table 1 shows the historical crashes and crash rates for Hennepin County. Beginning in 1998, crashes within the City of Minneapolis were added to the county totals (about 55% of all county crashes occur in Minneapolis). Table 1 Page 117 Bridge Facts ♦ The Lowry Ave- nue Bridge, an important trans- portation corridor and neighbor- hood connection in Minneapolis closed in 2008 and new con- struction is an- ticipated to begin in 2010, with a reopening date of November of 2011. ♦ The Hennepin Avenue Bridge is officially the Fa- ther Louis Hen- nepin Bridge in honor of the 17 Century explorer Louis Hennepin who discovered Saint Anthony falls a short dis- tance downriver. Mitigation Plan Risk Assessment Bridges Based on data provided by the Mn/ DOT Bridge Office, Hennepin County has 873 bridges. However, this data neglects about one-third of the bridges in the county since these bridges are based on bridges with a span of 20 feet or longer. Bridge Collapse/Deficiency History On Wednesday, August 1, 2007 the eight-lane,1,907 foot -long I -35W highway bridge over the Mississippi River in Minneapolis experienced a catastrophic failure in the main span of the deck truss. As a result, 1,000 feet of the deck truss collapsed, with about 456 feet of the main span falling 108 feet into the river below. The collapse resulted in 13 deaths and 145 people injured. Major safety issues identified in the investigation included insufficient bridge design firm quality control procedures for designing bridges and insufficient Federal and State procedures for reviewing and approving bridge design plans and calculations, lack of guidance for bridge owners, and lack of inspection guidance for conditions of gusset plate distortion. Following the collapse, WDOT conducted an extensive survey of bridges across Minnesota, including Hennepin County. Of the 873 bridges across Hennepin County 86.1 % were rated structurally sufficient, while 54 bridges were rated structurally deficient. The average age of Hennepin County bridges is 34 years. A bridge's sufficiency rating provides an overall measure of its condition and its also used to determine eligibility of federal funds. A bridge sufficiency rating involves a number of factors including (but not limited to) structural condition, traffic volume, number of lanes, roadway width, clearances, and importance of national security and public use. The structural condition of the bridge accounts for a majority of the rating. Page 118 0 • • Transit Facts ♦ Metro Transit ridership for 2004 was 53.9 million, 2005 was 61.8 million, 2006 was 64.4 million, 2007 was 77 million, and 2008 was 81.8 million. ♦ There are 937 busses, 2,660 em- ployees, and eleven major fa- cilities associated with Metro Tran- sit. ♦ Each weekday customers board Metro Transit buses an average of 240,000 times. ♦ The Hiawatha Corridor is con- nected to some of Minnesota's highest traffic generators in- cluding down- town Minneapo- lis, U of M, air- port, and the Mall of America. Mitigation Plan Risk Assessment Bridges are considered "structurally deficient" if primary load -carrying elements are in "poor" condition. Being classified as "structurally deficient" does not imply that a bridge is unsafe (an unsafe bridge would never be allowed to remain in service). In order to remain in service, a structurally deficient bridge usually requires significant maintenance and may have its load capacity reduced. Railway & Transit Railway There are several railroad companies that carry freight through Hennepin County, and those include: Canadian Pacific, Soo Line, and Burlington Northern (Santa Fe). These lines pose the greatest risk to Hennepin County due to the fact that they transport hazardous materials through the county on a yearly basis. History Typically railroads move about 1.7 to 1.8 million carloads of hazardous materials yearly, with roughly 105,000 of these carloads being toxic inhalation hazard (TIH) materials, such as chlorine and anhydrous ammonia. Over 64 percent of TIH materials are currently transported by rail. The railroads have an outstanding record in moving all goods safely. The vast majority of hazardous materials shipped by rail every year arrive safely and without incident, and train accidents involving a release of hazardous materials that cause death are rare, even while trail traffic volumes have increased steadily. Railroad companies typically do their own routing assessments and for the most part, MNDOT does not have hard data on the kinds of hazardous materials that are transported through the county, but it is assumed that a large majority of the hazardous materials do come through the county. Page 119 Transit Facts ♦ There is no fare required between the Lindbergh and Humphrey Terminals sta- tions on the Hia- watha Line. Ser- vice operates 24 - hours a day be- tween the airport stations. ♦ In its first five years of opera- tion (June 2004 through May 2009) customers boarded the Hia- watha light-rail trains 42.9 mil- lion times. Rid- ership in 2008 totaled 10.2 mil- lion - 12.3 per- cent higher than 2007 and the first time annual rail ridership has topped the 10 million mark. _Mitigation Plan Risk Assessment Transit The inherently open nature of public transportation systems, the quantities of people they transport each day, and the diverse and often times i heavily populated areas through which they operate, make such systems viable targets for various criminal activities including acts of terrorism. The terrorist attacks of September 11, 2001 and the nation's continuing "war on terrorism" has created an environment of heightened risk throughout the nation and has further increased the need for security hardening within the nation's public transportation systems. Metro Transit Bus System Metro Transit is the regional transit authority formed under Minnesota Statute 473.405, tasked to develop and operate a high capacity transportation system, including Metro Transit bus services, the Hiawatha Light Rail system, and Northstar commuter rail. Metro Transit is the nation's 11th largest bus system, providing roughly 90 percent of the 81.8 million bus trips taken annually in the Twin Cities. Hiawatha Light Rail Transit System Metro Transit provides light rail transportation services to customers within the Twin Cities metropolitan area through the existing Light Rail Line. At present, the Hiawatha Light Rail line is the only LRT in the area. The Light Rail Line provides rail service within the Hiawatha Corridor, originating in downtown Minneapolis, through a 1.8 tunnel under the Minneapolis St. Paul International Airport to the Mall of America. Page 120 r7 0 Transit Facts ♦ The Northstar Commuter Line began service from Big Lake to downtown Min- neapolis on No- vember 16, 2009, ♦ The Northstar Commuter Rail trains share exist- ing BNSF Rail- way tracks with freight trains be- tween Big Lake and downtown Minneapolis. ♦ The Northstar Commuter Rail routes directly through the 10 - mile Emergency Planning Zone (EPZ) of the Monticello Nu- clear Generating Plant. esu : /0t■ T The Northstar Com- muter Rail in Big Lake, Minnesota. • Mitigation Plan Risk Assessment Northstar Commuter Line The Northstar Commuter Rail line is a 40.1 mile commuter rail line from Minneapolis to Big Lake, Minnesota including a 4 -block extension to the existing Light Rail Transit (LRT) line. There are six (6) passenger stations along the commuter line located at Big Lake, Elk River, Anoka, Coon Rapids, Fridley, and Minneapolis. Northstar commuter trains share the tracks with freight trains and Amtrack passenger trains. Potential Future Route '+ t�9edical _:enter : t St. Cloud Potential Station Locations Ii1fIFH Commuter Rail Current Proposal Rau I Bus Routes 16 and 50 �itpOf a�iU11S Bus Route ?4 f cLVA Medical Center = I r.*.- TA II Ot Arne rlc.� Northstar Commuter Line route from Big Lake to Minneapolis. Page 121 Transit Facts ♦ The Northstar Commuter Rail project began in May of 1997 when 30 coun- ties, cities, town- ship and regional rail authorities created the joint powers board known as the Northstar Corri- dor Development Authority (NCDA) to ad- dress the in- creased need for additional trans- portation solu- tions between St. Cloud and Min- neapolis. ♦ There are six sta- tions along the Northstar Com- muter Line and those include: Big Lake, Elk River, Anoka, Coon Rapids - Riverdale, Fridley, and Tar- get Field. Mitigation Plan Risk Assessment Transit History Below is a listing of the accidents and deaths that have occurred since the Light Rail Transit (LRT) System began in 2005. 2005 - In 2005 there were six (6) LRT vs. pedestrian accents and three (3) LRT vs. vehicle accents. There were also three (3) suicide by train attempts. 1 fatality. 2006 - In 2006 there was one (1) LRT vs. pedestrian and six (6) LRT vs. vehicle accidents. 1 fatality. 2007 - In 2007 there were three (3) LRT vs. vehicle accidents and 1 other unspecified accident. 0 fatalities. 2008 - In 2008 there were four (4) LRT vs. pedestrian accidents and two (2) LRT vs. vehicle accidents. 1 fatality. 2009 - In 2009 there were nine (9) LRT vs. vehicle accidents and four (4) LRT vs. pedestrian accidents. There were also two (2) bus accidents. 4 fatalities. NORTHSTAR COMMUTER RAIL Ea Page 122 Mitigation Plan Risk Assessment Pipeline Facts Pipeline ♦ The Minnesota - Pipeline CAER (Community Pipeline incidents present some of the most-------------- (Community Awareness and dangerous situations an emergency Emergency Re- responder may encounter. Pipelines contain sponse) Associa- flammable, hazardous and even deadly tion is a collabo- ration of pipeline petroleum gasses, liquids, and other operators in the chemical products that present a myriad of hazards and risks that vary state, working to depending on the topography, weather, and properties of the material. prevent incidents, promote public awareness and Hennepin County has hundreds of miles of pipeline and those include pipeline safety. both gas transmission pipelines and hazardous liquid pipelines. There are several companies that own these lines including: CenterPoint ♦ Pipeline leaks repaired per mile Energy, Koch Pipeline Company, L.P., Magellan Midstream Partners, were reduced by L.P., Northern National Gas Company, NuStar Pipeline Operating 30% from the Partnership L.P., and Xcel Energy. A map of the transmission years 2001 pipelines across Hennepin County is on page 14 of this profile. through 2004. ♦ The Minnesota Pipeline History Office of Pipeline Safety is affili- Pipeline leaks can and have occurred on a yearly basis. Although ated with Gopher Hennepin County pipeline data was not available, the Minnesota State One -Call as the enforcement Office of Pipeline Safety states that state-wide, an average of seven authority for the federal reportable incidents/accidents have occurred per year, and staff "Call Before You have investigated an average of 200 reported events per year since Dig" law, Minne- 1999. Despite expanded education efforts, the leading cause of sota Statutes 216D. pipeline leaks and other underground facility failures remains damage by excavation activity. To continue to help mitigate these incidents, the Minnesota Office of Pipeline Safety is affiliated with the Gopher State One -Call as the enforcement authority for the "Call Before You li Dig" law. To further help secondary effects of transportation GOPHER STATE ONE CALL accidents DOT for interstate operators. Inspections include and evaluation of the operator's policies, procedures and training qualification records, in conjunction with field observations of various practices and conditions. Page 123 Mitluation Plan Risk Assessment Hennepin County Transmission Pipelines The Transmission Pipelines dataset is compiled by the Pipeline and Hazardous Transmission Pipelines Materials Safety Administration and gives the extent of gas transmission pipelines and hazardous liquid pipelines in Hennepin County, Minnesota. Gas Transmission Pipelines Hazardous Liquid Pipelines C7 Page 124 0 • • Mitigation Plan Risk Assessment Overall Hazard Ranking: Transportation Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability H!, j robability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability M16fi Pro-b'a" l fy ; Low Impact Moderate Impact I nigh Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability High Probability ligf F�iohah'i'ty Low Impact Moderate Impact High Irnpact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability h - _ . ability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 125 Winter Storm Facts ♦ Snow totals be- tween 7 and 9 inches fell on De- cember 8, 2005 in Minneapolis, cancelling 100 flights at the Minneapolis/St. Paul Airport. ♦ Minnesota's first winter storm warning was is- sued by the U.S. Army Signal Corps on Novem- ber 8, 1870. ♦ Winter storms are known as decep- tive killers be- cause most deaths are indi- rectly related to the storm. Peo- ple die in traffic accidents on icy roads and from hypothermia from prolonged exposure to cold SEDMONONE Risk Assessment Winter S t o r m s 3.2.13 Hazard Description Winter storms are among nature's most impressive weather spectacles. They can range from moderate snow over a few hours to blizzard conditions with blinding wind -driven snow that last several days. Some winter storms also contain freezing rain that falls on roads and power lines creating extensive damage and hazardous conditions. Some winter storms may be large enough to affect several states while others may affect only a single community. There are three basic ingredients necessary for a winter storm to develop: cold air, moisture, and lift, such as a front. Winter storms can be accompanied by strong winds creating blizzard conditions with blinding wind -driven snow, severe drifting, and dangerous wind chills. Strong winds with these storms can knock down trees, utility poles, and power lines. These winds can put pedestrians at risk to frostbite, if outdoors for a longer period of time. Winter storms can also contain freezing rain. Heavy accumulations of ice can bring down trees, electrical wires, telephone poles and lines, and communication towers. Communications and power can be disrupted for days while utility companies work to repair the extensive damage. Even small accumulations of ice may cause extreme hazards to motorists and pedestrians. Winter storms also contain heavy snow, which can immobilize a region and paralyze a city, stranding commuters and stopping the flow of supplies. Accumulations of snow can collapse buildings and knock down power lines. In rural areas, homes and farms may be isolated for days, and unprotected livestock may be lost. The cost of snow removal, repairing damages, and loss of business can have large economic impacts on cities and towns. 0 Page 126 0 Winter Storm Facts ♦ A very heavy winter storm dropped 12 inches of snow across Hennepin County on March 9, 1999. The heaviest bands dropped between 14 and 17 inches in the southern half of the county. ♦ A strong low pressure system moved up through Wiscon- sin on March 1, 2007, dropping more than a foot of snow across the county. 18 inches fell in Minnetonka. The storm closed hun- dreds of schools due to roads be- ing impassable. ♦ A winter storm with very heavy snow hit Henne- pin County on Dec 14, 1996, bringing 14 inches to Rock- ford, and 7 to 10 inches across the rest of the county. • SECTIONONE Risk Assessment There are various types of winter precipitation that accompanies winter storms. Snow can fall as flurries, which is light snow falling for short durations, to heavy snow which can fall in bursts and be accompanied by strong winds. When those strong winds reach 35 mph, blizzard conditions exist with blowing snow reducing visibility to near zero. Sleet is also a form of precipitation in winter storms. Sleet is rain drops that freeze into ice pellets before reaching the ground. One of the most hazardous forms of precipitation in winter storms is freezing rain, which is rain falling onto surfaces with temperatures below freezing, causing the rain to freeze on contact and form a coating or glaze of ice. A diagram of the different forms water has at certain temperatures. Winter Storm History Hennepin County has had a significant history of winter storms in the past. These storms range from snow storms, blizzards, and ice storms. The following pages list the history of blizzards and ice storms, including a link to some of the worst winter storms in the history of Hennepin County. Page 127 jrrr Ir O a o 0 o o< tl a + 4�+ a, o 1".0 Jdl, +Odd 0 O Oednary Sib—*d rem 9eet 5n0e rein 00"" V"o flro:en ram) gars A diagram of the different forms water has at certain temperatures. Winter Storm History Hennepin County has had a significant history of winter storms in the past. These storms range from snow storms, blizzards, and ice storms. The following pages list the history of blizzards and ice storms, including a link to some of the worst winter storms in the history of Hennepin County. Page 127 Ice Storm Facts ♦ Freezing precipi- tation has caused over $16 billion in property losses in the U.S. alone and accounts for 20 percent of all winter -related injuries. ♦ The average vic- tims susceptible to ice storms are males over 40 years old. ♦ Insured property losses from ice storm events in the U.S. averages 326 million dol- lars per year in damages. ♦ The weight of ice on a power line for a 300 foot span of power lines that are 1" thick coated with 1/4 inch of ice, adds 117lbs of weight to the ob- ject. ♦ Accumulations of ice can increase the branch weight of trees by 30 times its original weight. SECTIONONE Risk Assessment �" ` R A worker removes snow at the Minneapolis/St. Paul International Air- port in Minneapolis on Thursday, March I, 2007- Eel I c e S t o r m d-' A Hazard Description Ice storms, produced by freezing rain, are one of the most dangerous weather occurrences in the world. Freezing rain accounts for a quarter of all winter related events in the United States and half of these develop into ice storms. Ice storms are classified by their structural damage or by the approximate accumulation of 0.25 inches or more. Minor glazes of ice is hazardous for traffic and pedestrians, but the real severity of ice storms are seen in full effect by the extensive power outages, halted air and ground transportation, and considerable property damage. Two essential elements are required to generate freezing rain: a deep warm 0 Page 128 0 Ice Storm Facts ♦ The average an- nual property damage loss in ice storms based on an 8 year pe- riod is 226 mil- lion dollars and accounts for about 60% of winter storm damages. ♦ Ice accumulates when super- cooled rain freezes on con- tact with sur- faces, such as tree branches, that are at or be- low the freezing point. ♦ An ice storm warning is issued by the National Weather Service when freezing rain produces a significant and possibly damag- ing accumulation of ice. The crite- ria for this warn- ing varies from state to state, but typically will be issued any time more than 1/4 of ice is expected to accumulate in an area. $ECTIONONE Risk Assessment layer (above freezing) over a shallow cold layer at the surface that has temperatures below freezing. Whether the precipitation is rain or snow, as it passes through the warm layer, it is converted into rain. Then as the rain passes through the cold shallow layer just above the surface, its internal temperature drops below the freezing point of water, however, the raindrop remains liquid; a phenomenon called supercooling. When this supercooled liquid water drop hits surface that has a temperature below freezing, it immediately freezes upon contact. Colo 1 � tincnadinq Layer � e.vafion Deep Warm j Layer ` a / S Cold Layer t ---t----�--�--r-rr► Su.tac 257 37F .....+� Ti nperaluw of The process of how freezing rain occurs in the atmosphere. Ice Storm History Here is a listing of ice storms that Hennepin County has seen in the past: May 1, 1935. An unusually late snow, sleet and ice storm over east central Minnesota. The heaviest ice was between St. Paul and Forest Lake and westward through Hennepin County. Ice accumulations of 1 to 1.5 inches were observed on wires. November 8, 1943. Severe ice storm in the Twin Cities with heavy snow Page 129 Ice Storm Facts ♦ A freezing rain advisory or freez- ing drizzle advi- sory is issued when a small amount of icing is possible. ♦ Sleet is more dif- ficult to forecast than freezing rain because it devel- ops under more specialized con- ditions. It is very similar to freez- ing rain in that is causes surfaces to become very slick, but is dif- ferent because its easily visible. ♦ Sleet forms when rain passes through a cold layer of air and freezes into ice pellets. This oc- curs most often in the winter, when warm air is forced over a layer of cold air. ti .` N - Sleet accumulates on a deck SECTIONONE Risk Assessment concentrated over southwest Minnesota. Many telephone poles came down due to the ice and one Minneapolis man died from shoveling. November 30, 1945. Ice storm hits southern two-thirds of Minnesota. Freezing drizzle in the Twin Cities where about '/a of an inch of ice accumulated damaging trees and power lines. January 14, 1952. Sleet and ice storm hits Minnesota from St. Cloud south into Iowa. 1,100 Northwestern Bell telephone lines collapsed due to ice thickness 1 '/2 inches. Minneapolis General Hospital treated 81 people, victims of falls on icy streets. January 16, 1967. A quick blizzard on January 16 sent temperatures plummeting to record lows and caused the deaths of 7 Minnesotans in the severe cold, while shoveling snow, or in auto wrecks. Eight days later, on the 24th, a rare January lightning storm changed over to freezing rain. One inch of ice in the Twin Cities brought down power lines and tree limbs, leaving 10,0 homes without power. January 17, 1996. An extended period of rain and freezing rain resulted in significant icing conditions over parts of east central and southern Minnesota. Over 1 inch of rain occurred over much of the area resulting in street flooding due to snow clogged sewers. 1/2 to 1 inch thick ice accumulations over much of the Minneapolis/St. Paul metro area resulted in significant tree damage and power outages. More than 180,000 metro residents were without power for some part of the storm. Red Cross shelters were opened in the metro area assist people who were forced from their homes due to a lack of heat. B l i z z a r d Hazard Description Page 130 to SECTIONONE Risk Assessment Page 131 Blizzard Facts ♦ The "Halloween Blizzards are dangerous winter storms that are a combination of blowing Blizzard" of 1991 snow and wind resulting in very low visibilities. While heavy snowfalls and claimed the lives of 20 Minneso- severe cold often accompany blizzards, they are not required. Sometimes tans due to traffic strong winds pick up snow that has already fallen, creating a ground accidents or heart blizzard. attacks from dig- ging out after the Officially, the National Weather Service defines a blizzard as a storm which storm. contains large amounts of snow or blowing snow, with winds in excess of ♦ The Armistice 35 mph and visibilities of less than'/4 mile for an extended period of time Day Blizzard of (at least 3 hours). When these conditions are expected, the National 1940 ranks sec- ond on the Min- Weather Service will issue a `Blizzard Warning". When these conditions nesota Climatol- are not expected to occur simultaneously, but one or two of these conditions ogy office's top are expected, a "Winter Storm Warning or "Heavy Snow Warning" may be five weather issued. events of the 20th century. Only the 1930's dust Blizzard conditions often develop on the northwest side of an intense storm bowl outranks it. system. The difference between the lower pressure in the storm and the higher pressure to the west creates a tight pressure gradient, or difference in ♦ The Armistice Day Blizzard pressure between two locations, which in turn results in very strong winds. killed 49 people These strong winds pick up available snow from the ground, or blow any in Minnesota be- - snow which is falling, creating very low visibilities and the potential for tween Nov 11 significant drifting snow. and 12, 1940. P Blizzard History .. On Halloween morning, a low-pressure system developed over Southeast Texas and moved rapidly northeast, reaching its maximum intensity just . east of La Crosse, WI on the afternoon of November 1St. This storm Finding shelter during became known as the "Halloween Blizzard" in most of Minnesota, and the the. Armistice Day Bliz- "Halloween Ice Storm" in Iowa and portions of Southeast Minnesota. zard in Minneapolis. The "Halloween Blizzard" of 1991 was a three day event: on October 31St, rain and sleet began to change to all snow, November 1St was an all -day snow and wind event, and by November P, temperatures fell to -3 degrees Page 131 SECTIONONE Risk Assessment Blizzard Facts 0 Fahrenheit. ♦ The blizzard that struck the Twin Cities on Novem- ber 19th, 1981 dropped over a foot of wet snow that caused the inflated fabric of the Hubert H. Humphrey Met- rodome to col- lapse and rip. ♦ White out condi- tions occur most often with major storms that pro- duce drier, more powdery snow. ♦ Wind chill tem- perature is only defined for tem- peratures at or below 50 degrees Fahrenheit and wind speed above 3 mph. Bright sunshine may increase wind chill temperature by 10 to 18 de- grees Fahrenheit. The Halloween Blizzard of 1991 broke the following Twin Cities records: ➢ Biggest Twin Cities storm: 28 inches (October 31 -Nov 3, 1991) Old record: 20 inches (Jan 22-23, 1982) ➢ Deepest Twin Cities 24-hour snowfall: 21 inches (Oct 31 -Nov 1, 1991). Old record 18.5 inches (Jan 23, 1982) ➢ Most snow in Twin Cities on Oct 31 st: 8.2 inches (1991). Old record: 0.4 inches (1954). ➢ Most now in Twin Cities on Nov 1st: 18.5 inches (1991). Old record: 3.6 inches (1941). ➢ Earliest autumn below -zero low: 1991 -3 degrees (Nov 4, 1991). Old record: -1 degrees (Nov 11, 1986). ➢ Most snow in Twin Cities in October: 8.2 inches (1991). Old record: 5.5 inches (1905). I 3x 3'1 ?R 71- 24 a4 ii1 y` 16 41 12 3f1 Ih II 111 Ctil Minnesota "Halloween Blizzard" Snowfall Page 132 Blizzard Facts ♦ On November 10 and 11, 1975, a blizzard with winds of 71 mph created waves up to 15 feet on Lake Superior, sinking the Ed- mund Fitzgerald. ♦ A severe blizzard is considered to have tempera- tures near or be- low 10 degrees Fahrenheit, winds exceeding 45 mph, and visibil- ity reduced by snow to near zero. ♦ Blizzards in Min- nesota typically occur between October and April; however, they occur with the most fre- quency from early November through the end of March. • SECTIONONE Risk Assessment Another significant blizzard in the Twin Cities history was the Armistice Day Blizzard on November 11, 1940. The weather was relatively benign the morning of the November 11, 1940. Many people were outdoors, taking advantage of the mild holiday weather. The weather forecast that morning was for colder temperatures and a few flurries. Few people were prepared for what was to come. The storm started with rain, however the rain quickly turned to snow. By the time the blizzard tapered off on the 12th, the Twin Cities had received 16.7 inches of snow, Collegeville 26.6 inches, and 20 -foot drifts were reported near Willmar. In all 49 Minnesotans lost their lives in this storm, many of them hunters trapped by the sudden turn of events. PW Excelsior Boulevard, west of Minneapolis after the Armistice Day Storm Rated by the National Weather Service as Minnesota's "Storm of the Century", (January 10, 1975) a severe blizzard blasted the entire state with 1 to 2 feet of snow, winds as high as 80 mph, and below -zero temperatures. Drifts reaching 20 feet in height closed virtually every road in the state—some for as long as 11 days to all traffic except snowmobiles. The storm center tracked from south to north across the state, sending the barometer to record lows at Rochester (28.63"), Minneapolis (28.62"), and Duluth (28.55", a state record). A train with 168 aboard was trapped near Willmar, 6,000 homes lost power in western Minneapolis, 15,000 head of livestock froze, and the Red Cross sheltered 16,672 people. The snow and cold claimed 35 lives. Page 133 SECTIONONE Risk Assessment Overall Hazard Ranking: Winter Storms Lake Minnetonka Regional Emergency Management Preparedness Planning and Review Committee: High Probability High Probability robabilit Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact North Suburban Emergency Planning Group: High Probability High Probability WwHidWrobability Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact South Hennepin Emergency Management Planning Group: High Probability Low Impact High Probability Moderate Impact robab!117 High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Minneapolis Planning Group: High Probability High Probability High Probability , Low Impact Moderate Impact High Impact Moderate Probability Moderate Probability Moderate Probability Low Impact Moderate Impact High Impact Low Probability Low Probability Low Probability Low Impact Moderate Impact High Impact Page 134 HennepinI',ou MltlgaUon Plan Vulnerability Assessment SECTION 4 County VULNERABILITY ASSESSMENT Hennepin C011M mm alien Plan Vulnerability Assessment 4.1 Vulnerability Assessment H Vulnerability describes how exposed or susceptible to damage an asset is, and depends on an asset's construction, contents and economic value of its functions. This vulnerability analysis predicts the extent of damage that may result from a hazard event of a given intensity in a given area on the existing and future build environment. Like indirect damages, the vulnerability of one element of the community is often related to the vulnerability of another. Indirect effects can be much more widespread and damaging than direct effects. For example, damage to a ma- jor utility line could result in significant inconveniences and business disruption that would far exceed the cost of repairing the utility line. 4.1.1 Inventory Assets Hazards that occur in Hennepin County can impact facilities located in the County. A critical asset is defined as a facility in either the public or private sector that provides essential prod- ucts and services to the general public, is otherwise necessary to preserve the welfare and qual- ity of life in the County, or fulfills important public safety, emergency response, and/or disaster recovery functions. In order to inventory assets, Hennepin County used County data that listed all assets in the floodplains. This information was then sent to all the cities to confirm that no assets had been missed. Below is a table and map of the cities that have assets in the floodplains. Normandale Lake Dam NA Bloomington NA Nine Mile Creek Dam NA Bloomington NA Ameribest Home Care LLC 7420 Brooklyn Blvd Brooklyn Center 55429 Center Park Senior Apart- 5415 69th Ave N Brooklyn Center 55429 ments North Residential Hospice 4201 Bass Lake Rd Brooklyn Center 55430 Riverwood Estates 215 65th Ave N Brooklyn Center 55429 BAPS Minneapolis LLC 2300 Freeway Blvd Brooklyn Center 55429 Pei Page 135 n u Hennepin ICou ► WVatlon Plan Vulnerability Assessment Tornado Siren 10320 Zane Ave N Brooklyn Park 55443 Coon Rapids Dam NA Brooklyn Park NA Brooklyn Park Evan Free 7901 W Broadway Ave Brooklyn Park 55445 Amas Incorporated 3617 77th Ave N Brooklyn Park 55433 Page 136 Fresenius Medical Care 12339 Champlin Dr Champlin 55316 Purgatory Creek Dam NA Eden Prairie NA Riley Lake Dam NA Eden Prairie NA Riley Lake Dam NA Eden Prairie NA Southwest Metro Transit Sta- 14405 W 62nd St Eden Prairie 55346 tion Calvin Christian Academy 4015 Inglewood Ave S Edina 55416 ALC Edina High School Al- 6754 Valley View Rd Edina 55439 ternative IS Orthopedic Institute Surgical 8100 W 78th St Edina 55439 Center Home Instead Healthcare 4445 West 77th St Edina 55435 Berry Patch Colonial Child- 6200 Colonial Way Edina 55436 ' care Excelsior Methodist Church 881 3rd Ave Excelsior 55331 Highway 7 & Water Street Highway 7 & Water Street Excelsior 55331 Siren Colonial Acres Healthcare 5825 Saint Croix Ave N Golden Valley 55422 Center • Page 136 Hennepin County Mftlgatfon Plan Vulnerability Assessment H� Heritage House Assisted Liv- 5825 Saint Croix Ave N Golden Valley 55422 ing The Caring Sisters Healthcare 6166 Olson Memorial High- Golden Valley 55433 way Rice Lake Dam NA Maple Grove NA Medicine Lake Dam NA Medicine Lake NA Morris T Baker Reserve Dam NA Medina NA River Services Inc Railway Minneapolis NA Facility De La Salle High School 1 De La Salle Dr Minneapolis 55401 St. Anthony Falls Upper Dam NA Minneapolis NA St. Anthony Falls Lower NA Minneapolis NA Dam Lock & Dam no. 1 NA Minneapolis NA Lake Minnetonka Dam NA Minnetonka NA Minnetonka Public Works 11520 Minnetonka Blvd Minnetonka 55305 Hennepin County Shop Facil- 11522 Minnetonka Blvd Minnetonka 55305 ity Bantas Point Lift 12425 Bantas Point Road Minnetonka 55391 Crosby Lift 2565 Crosby Road Minnetonka 55391 West 34th Street Lift 9920 Lahti Lane Minnetonka 55305 Green Circle (Opus Lift) 5644 Green Circle Drive Minnetonka 55343 Page 137 • • • Hennepin I Mitigation Plan Vulnerability Assessment Green Circle (Opus Lift) 5644 Green Circle Drive Minnetonka 55343 Wells 6 & 7 10701 Greenbrier Road Minnetonka 55305 Plymouth Creek Dam NA Plymouth NA Plymouth Creek Elementary 16005 41 st Ave N Plymouth 55446 Cornerstone Assisted Living 3750 Lawndale Ln N Plymouth 55446 Cornerstone Home Living 3750 Lawndale Ln N Plymouth 55446 Plymouth Creek Dam NA Plymouth NA Sliver Lake Dam NA Shorewood NA Westwood Healthcare Center 7500 W 22nd St St. Louis Park 55426 Cedar Manor Elementary 9400 Cedar Lake Rd St. Louis Park 55426 Common Ground Broadcast- NA St. Louis Park 55416 ing Methodist Hospital 6500 Excelsior Blvd St. Louis Park 55426 Carefocus Corporation 5811 Cedar Lake Rd St. Louis Park 55416 SCA License Corporation NA St. Louis Park 55416 Melrose Elementary 3525 Monterey Dr St. Louis Park 55416 Amedisys Home 5000 36th St W St. Louis Park 55416 Shadeway Group Home 522 Shadyway Rd Wayzata 55391 Page 138 N0006011 Coum]I Mltlgadon Plan Vulnerability Assessment City of Bloomington A Dams Infrastructure within the 100 & 500 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). 100 -year Floodplain The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM). - 500 -year Floodplain Map created bythe Hennepin County EP Division I Q October 29, 3109. Hennepin Count/ makes no warranty, representation, or guarantee as to the content accuracy timeliness, or completeness I I I I I I I I of any of the information provided herein. Miles Page 139 410I • • Nennegin COOM MMOau0n Plan Vulnerability Assessment City of Brooklyn Center Infrastructure within the 100 & 540 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMN. The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIR 4. © Churches ® Healthcare 100 -year Floodplain - 500 -year Floodplain Map created by the Hennepin County EP Divi ion O .� October29,2009. Hennepin County makes no /J.,� warranty, representation, of guarantee as tothe7 content accur acy. time liness, or co mpiete ness Y of arry ofthe information protrided herein. Miles Page 140 Nennepin County Nltloatlon Plan Vulnerability Assessment City of Brooklyn Park Infrastructure within the 100 & 500 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM). I 1vL4PLE 5. Dams ® Siren Location © Churches ® Healthcare - 100 -year Floodplain - 500 -year Floodplain Map created by the Hennepin County EP Diois ion r October 29, 2009. Hen ne pin Counts maces no 0 warranty, representation, or guarantee as to the I I I I I I t I cont nt, accuracy, timeliness, or completeness Miles of arty of the information proud ded herein. _ Page 141 [a] FA • 0 r: Hennepin)PIM MMuMon Plan Vulnerability Assessment City of Champlin Infrastructure within the 100 & 540 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FENWs Flood Insurance Rate Map (FIR". ® Healthcare - 100 -year Floodplain - 500 -year Floodplain Map created by the Hennepin County EP Dive ion O ,I October 28,2008. Hennepin County makes no /y,L� uuarrardy, representation, or guarantee as to the " ` I I I I I content accuracy, timeliness, or completenesstT of any ofthe information proiAded herein. _ MII@S I'aae 142 Hennepin CeuM Motion Plan Vulnerability Assessment City of Eden Prairie Infrastructure within the 100 & 500 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEIVWs Flood Insurance Rate Map (FIR ND. Itr; Dams Bus Facilities ® 100 -year Floodplain - 500 -year Floodplain Map created by the Hennepin County EP Diois ion November 17.2009. Hennepin County makes no warranty, representation, or guarantee as to the content, accur acy, timeliness, or completeness of any ofthe information provided herein. i.a Miles Page 143 Hennepin COUN" ffifflusuen plan Vulnerability Assessment 11 City of Edina Infrastructure within the 100 & 500 -year Flood Zone 0 Childcare Centers Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted Healthcare as part of FEM,15,'s Flood Insurance Rate Map (FIRM). Public Schools Private Schools HOF?�NS 100 -year Floodplain LOU IS PARK j it 500 -year Floodplain Calvin Christian Academy MINNEAPOLIS Orthopedic Institute Surgical Center Home Instead Healthcare r BLOOMINGTON Map created bythe Hennepin County EP Division Novemb er 20.20D9. Hennepin County makes n warranty, representation, or guarantee as to the W Ment accut acy, timoliness, or completeness Miles of any ofthe information provided herein. 0 Page 144 MINNETONKA Berry Patch - Colonial Childcare FDINA Go 22 212 100 6' I A T k'jc� ALC Edina High School Alternative -IS EDEN PRAIRIE Orthopedic Institute Surgical Center Home Instead Healthcare r BLOOMINGTON Map created bythe Hennepin County EP Division Novemb er 20.20D9. Hennepin County makes n warranty, representation, or guarantee as to the W Ment accut acy, timoliness, or completeness Miles of any ofthe information provided herein. 0 Page 144 Hennepin County 111MUStlon Plan Vulnerability Assessment City of Excelsior ® Siren Location Infrastructure within the 100 & 500 -year Flood Zone © Churches Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA. 100 -year Floodpla in The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM). 500 -year Floodplain V. - Map created bythe Hennepin County EP Dhfision N wemb er 20, 2008. H e nn epi n C ounty makes n o .arra My, representation, or guarantee as to the oo Ment accuracy, timeliness. or completeness of arty of the information prom ded herein. JOOD EXCELSIOR Exelsior Methodist Church ? r' Higl-way 7 and'Nater Street :Siren 0 0.2 I I I I l l l l Miles Page 145 0 I� • • • NennePIN Ceunty NNIBUeN Plan Vulnerability Assessment City of Golden Valley 0 Healthcare Facilities Infrastructure within the 140 & 500 -year Flood Zone - 100 -year Floodplain Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted - 500 -year Roodpl ain as part of FEWs Flood Insurance Rate Map (FIRM). I Map ore ated by the Hennepin County EP Di✓sion 0 �. 6 December 4, DJOB. Hennepin County makes no _ warranty, representation, or guarantee as to the 1 1 1 1 1 1 1 content, accuracy,timeliness, or completeness Miles of any "the information provided herein. Page 146 Hennepin County mulgatlen Plan Vulnerability Assessment City of Maple Grove Infrastructure within the 100 & 500 -year Flood Zone jKli Dams Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). 100 -year Floodplain The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM). - 500 -year Floodplain Map created by the Hennepin Courdy EP Dhr's ion December 17,2008. Hennepin County makes no [� warranty. representation. or guarantee as to the content accuracy, timeliness, or completeness YYY of a ny of the information provided herein. Miles Page 147 • • NOUROPIN County Nltlgatlon Plan Vulnerability Assessment Cities of Medina and Loretto Infrastructure within the 104 & 504 -year Flood Zone Dams Floodplain zones data gathered from the Federal Emergency Management Agency (FEMfjI. - 100 -year Floodplain The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMAs Flood Insurance Rate Map (FIRM). - 500 -year Floodplain ,r Map created by the Hennepin County EP Drvhs ion 0 0.8 November 27, 2008. Hennepin County makes no warranty, representation, or guarantee as to the content accuracy, timeliness, or completeness Miles t of arty of the irdor mation provided herein. Page 148 Hennepin Counri Mitigation Plan Vulnerabilitv Assessment City of Minneapolis Infrastructure within the 100 & 500 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM. Dams Q Private Schools Railway Facilities - 100 -year Floodplain _ 500 -year Floodplain Map created by the Hennepin County EP Dtola ion Nwember27.200®.Hennepin County makes no!l\ 0 warranty, rep lesentatlon, or guarantee as to the - j r- I I content accuracy, time liness, or completeness YY of a ny of the infor mation pro>A ded herein. Ib11 @ S Page 149 W Nennepin Woo MIduadon Plan Vulnerability Assessment • City of Minnetonka Q� Dams Infrastructure within the 100 & 500 -year Flood Zone * Criticallnfrastructure Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). 100 -year Floodplain The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM). - 500 -year Floodplain r' ss 55 ORON! —T-- PLY A OUTH 1, L� -- ---- ------ --------GCL-DE-N- LLEY 6antas Puitt Lift 1 AY'Y°ATA } L Crosby Lift ` Lake Minnetonka Dam t Wells 6 & 7 i 1) ST. LOUIS PARK J '1 i Minnetonka Public Works 1.. WOODLAND J i- �1 . • DEEPHAVEN SH Map created 6'r Hennepin Counly EP Divsion December 23, 2008. Hennepin Counfy makes no wawa My. representation, or guarantee as to Nie content accuragr,timeliness, or compieteness of arty of the information provided herein. • MINNETONKA 'k Minnetonka Bl\ d Lift �-- i 1E5' H OPK INS VGreenle (Opus Litt} INA 0 1.2 �I 1 1 1 1 1 1 11 1 1 1 1 1 1 Miles Page 150 Hennepin County Negation Plan Vulnerability Assessment City of Orono ¢S Dams Infrastructure within the 100 & 500 -year Flood Zane 100 -year Floodplain Floodplain zones data gathered from the Federal Emergency Management Agency (FEMN. The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted - 500 -year Floodplain as part of FEMA's Flood Insurance Rate Map (FIRM]. Map created by the Hennepin County EP Dion N Wemb er 27, 2009. H e nn epi n C ounty makes n o warranty, representation, or guarantee as tothe content accuracy, timeliness, or completeness of any ofthe information provided herein. 0 1.6 I I I I I I I I Miles Page 151 �01 C Cities of Plymouth and Medicine Lake Infrastructure within the 1 oo & 500 -year Flood Zone M Healthcare Facilities FI oodplain zones data gathered from the Federal Emergency Management Agency (IFEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted Public Schools aspart of FEMA's Flood Insurance Rate Map (FIR". I 100 -year Floodplain Plymouth Creek Dam 55 Plymouth Creek Elementary NEW HOPE 0 Cornerstone Assisted Living Cornerstone Home Ljvii�] Plymouth Creek Dam 0 � Plymouth Creek Dam 0 Hennepin County Mitigation Plan Vulnerability Assessment City of Shorewood !i Dams Infrastructure within the 100 & 500 -year Flood Zone :` 100 -year Floodplain Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted 500 -year Floodplain as part of FEMA's Flood Insurance Rate Map (FIRM). Map creaked bythe Hennepin County EP Drusion November27.201W. Hennepin Countymakes no warranty, representation, or guaranties as to the�J content accuracy, timeliness, otcompleteness of any of the infor maticn proMded herein. Miles [go] Page 153 • • Nennepin CegW Wgaden Pian Vulnerability Assessment City of Saint Louis Park Infrastructure within the 100 & 500 -year Flood Zone Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted as part of FEMA's Flood Insurance Rate Map (FIRM). 100 -year Floodplain _ 500 -year Floodplain I I � I I Map created bythe Hennepin County EP Dion O 0.8 January 5. 2010, Hennepin Countymaces no warranty, representation, or guarantee as to the oontent accuracy, timeliness, or completeness Miles of any ofthe irdormation provided herein. _ Page 154 Criti ca I I nfrastructu re Communications Facilities ® Healthcare Facilities Mk Public Schools 100 -year Floodplain _ 500 -year Floodplain I I � I I Map created bythe Hennepin County EP Dion O 0.8 January 5. 2010, Hennepin Countymaces no warranty, representation, or guarantee as to the oontent accuracy, timeliness, or completeness Miles of any ofthe irdormation provided herein. _ Page 154 Nennepin Comm mmull ion Plan Vulnerability Assessment City of Wayzata Infrastructure within the 100 & 500 -year Flood Zone - 100 -year Floodplain Floodplain zones data gathered from the Federal Emergency Management Agency (FEMA). The floodplain zones dataset is a collection of flood hazard areas that are or will be depicted — 500 -year Floodplain as part of FEMA's Flood Insurance Rate Map (FIRM). moi- — - f ~ j PLYMOUTH ORONO i LONG`LAKE l f Shad away Group Horne P' Y 2 iL WAYZATA WOODLAND MINNETONKA DEEPH AVEI,I —� It------ Map created by the Hennepin C ou rRy E P D ivy ion CC N wemb er 27, 2008. H e nn epi n County makes n o 0 D.V warranty, representation, or guarantee as to the -- content accuracy, timeliness, or complete ness iii I I I I I I I I of arty ofthe information provided herein. Mlles Page 155 • • 18009/11 Gomm Wooden Plan Vulnerability Assessment 4.2 Future Land Use & Development Trends Existing (2005) Land Use The exiting land use data for Hennepin County comes from the Metropolitan Council. The Metropolitan Council is the regional planning agency serving the Twin Cities seven -county metropolitan area and providing essential services to the region. State Statutes 473 grants au- thority to the Metropolitan Council (Met Council) to plan for the Twin Cities area. The Council works with local communities to provide these critical services: operates the region's largest bus system, collects and treats wastewater, engages communities and the public in planning for future growth, provides forecasts of the region's population and household growth, provides affordable housing opportunities for low and moderate income individuals and families, pro- vides planning, acquisitions and funding for a regional system of parks and trails, and provides a framework for decisions and implementation for regional systems including aviation, trans- portation, parks and open space, water quality, and water management. Today, Hennepin County has over 350,000 individual parcels of land. Over 85 percent of these parcels are classified as a type of existing or future residential use. Hennepin County land use categories are Residential, Mixed Use, Commercial, Industrial, Parks, Recreation & Preserves, Major Vehicular Rights -of -Way, Airports, Agriculture & Undeveloped, and Open Water. Table 1 provides a breakdown of the major land use types in the county database and Figure 2 pro- vides a map of the current land use throughout Hennepin County. Residential Total 127,131 131,826 3,t393 Single Family Residential 108,752 111,859 3,108 +3% Farmsteads 2,838 2,167 -670 -24% Multi -family Residential 15,542 16,999 1,457 +9% Mixed Use 1,169 1,695 526 +454'0 Comrnercial 12,853 13,053 199 +2% Industrial Total 15,585 15,795 210 +1% Industrial & Utility 13,380 13,788 408 +3=1 Extractive 1,363 1,232 -131 -10% Railway 842 776 -67 -8% Institutional 11,590 12,240 650 +153% Parks, Recreation & Preserves 45,927 49,521 3,593 +84'0 Major Vehicular Rights -of -Way 9,138 9,669 530 +64'0 Airports 3,674 3,794 120 +340 Agriculture & Undeveloped Total 126,405 116,636 -9,769 -84'0 Agriculture 51,996 49,567 -2,430 -5% Undeveloped Land 74,155 67,069 -7,085 -10%1 N/A! Agricultural & Vacant N/A N/A N/A Industrial Parks not Developed N/A N/A WA N/A Public & Semi -Public Vacant N/A N/A N/A N/# open Water 34,485 34,514 28 +04/0 Total 387,958 387,941 -16 -0% Table 1 - Current Land Use Categories Page 156 R®nneQln County m1ugetion Plan Vulnerability Assessment I Table 2 - Current Land Use Map Hennepin County 2005 Landuse I. -A rmt I hip t..•ro•wu.�n i .n.•g�.rirry LAND USE ,Recreational 1 Vacant (No Trip Generation), Instutional ® Industrial Ilviedical ,Agriculture ,office Residential . Commercial.Retail NOR Hq.R.l MW w n Cntl m ta.ptNwwn Wnt J.tuwms .n rFn M Mw •4r<n r..4N. bNwn.t:n C4..r tw�ru.. n bW m IlF rp p.�v.w�npbNt nOn <wgvc.A M.W m.m. wW iun4w o1Pw. q.n.rw.! w:Mt Yw+n n..wn m., .auM. U m w 4 ,4 a..ar o.nwmno. Page 157 Hennepin County mmundon Plan Vulnerability Assessment • Future Development Trends Future development trends are identified in the Hennepin County Transportation Systems Plan (HC -TSP) and incorporates much of the regional thinking of Mn/DOT, the Metropolitan Coun- cil and the State Planning Agency. The principal guide in the forecasting of future land use de- velopment was the comprehensive plans of the individual cities. All 45 cities and the Township of Hassan were asked to provide future land development information on what types of land uses and intensities of development they would expect over the next twenty years. Parcel land use maps were provided to each city identifying vacant parcels as defined by the tax assessor's records. In return, the cities reviewed the maps identifying buildable parcels by sub- tracting those areas designated as park land, having steep unbuildable slopes or areas designated as wetlands. The cities were asked to estimate the expected phasing of development between now and 2030. The cities provided the marked -up parcel maps with their comments. The com- ments and expected developments were quantified and summarized. The 20-30 HC -STP uses a "Bottom -Up" process where the land uses are accrued from the com- prehensive plans of the 45 cities and the Township of Hassan. Hennepin County does not have land use classification or zoning powers. These powers reside in the individual cities. How- ever, the county is involved in the plat reviews of developments adjacent to its roadway system and it is part of the comprehensive planning process that involves all metropolitan counties and cities. The future forecast of the 2030 HC -TSP are based on expected land use development patterns. Land uses are classified by type such as residential, commercial, office and industrial type uses. These uses are generally quantified in terms of the number of dwelling units, building square footages or acres of development. Land use as an indicator for future development potential contrasts with the regional forecasting process that relies on socio-economic data such as population, households and employment. Although the 2030 HC -TSP builds on the regional process, this is one area where an alternate approach is used. Figure 3 shows the 2030 Hennepin County Future Land Use map, which was taken from the Hennepin County Transportation systems Plan (HC -TSP). Page 158 Hennepin County MltlgaHon Plan Vulnerabilitv Assessment N ll� all e Hennepin County 2030 Landuse n..-A.-nI trap r..,.w•rnuarr < auxnd.. LAND USE ,Recreational Vacant (No Trip Gencrationl Instutional Industrial ! Medical Agriculture Office Residential f Commercial -Retail Lodging N*M �O�mE uwnl.vdrntmip.I.wnin Wna •u�ntr. enw rd m�� .waew •.uYM, aH•nn+n cam, -ac- v ac•o!!v fa ■ -�-� �: - ,.- -�; �� v..r M1i�'4.�. .,g,� w '+ .ti�y _'•� � r$r''�s0'r ��'a!'• i"'#,�. s- ■ s. c * f~b ..c 'T1.Fb-'r T.. 3 1%a 45 rT_ r +[ w�"s " " fi + .y 1#'Yll# L- wry i� . oCRi •t ' �. r� �: r •r�.ar' .ts oil �4J 4 t� •� Hennepin County 2030 Future Land Use Map v n Page 159 H, 0 • Nennepin (Y1011 M1UgaUon Plan Vulnerability Assessment 4.3 Assessing Future Vulnerability In addition to identifying existing critical assets, FEMA also states the importance of document- ing future buildings, infrastructure or critical facilities within identified hazard areas. The Hen- nepin County Transportation Systems Plan identifies future land use trends. The principal guide in the forecasting of future land use development was the comprehensive plans of the 45 individual cities and the Township of Hassan. Parcel land use maps were provided to each city identifying vacant parcels as defined by the tax assessor's records. In return, the cities reviewed the maps identifying buildable parcels by subtracting those areas designated as park land, hav- ing steep unbuildable slopes or areas designated as wetlands. The cities were asked to estimate the expected phasing of development between now and 2030. The table and map describe the categories of future land use (agriculture, residential, industrial, lodging, and recreational) that will be built or utilized within the floodplains in Hennepin County. Hennepin County Future Land Use Flood Vulnerability Page 160 Hennepin County Mftlmon Pion Vulnerability Assessment l aw � a.-. N A Hennepin County 2030 Landuse Rased on ITE l7ip Generation Catrg—t LAND USE .Recreational Vacant (No Trip Generation), Instutional Industrial . Medical ,Agriculture .Office s a _ • —I Residential ,Commercial -Retail j r i4_ Lodging r� FEMA Floodplain Areas a •.. _7i .0196 Annual Flood Probability ' v - .002% Annual Flood Probability i• \ a�� .mow.a ,,,.. weo. �„oa....... we+..a,....-. IN •, ids` 'r�i ' ( � �.' H jlmt;!n�� Page 161 Hennepin Cool" MMUNUon Plan Vulnerability Assessment Is4.4 Repetitive Loss Structures In recent years, FEMA has developed a concept to highlight the impact that repetitive flooded structures have on the National Flood Insurance Program (NFIP). The term "repetitive loss" as applied to the NFIP, refers to any property for which two or more flood insurance claims in ex- cess of $1,000 each in a 10 -year period of time has been paid. About 1 percent of the 4.4 mil- lion properties currently insured by the program are considered to be repetitive loss properties. A report on repetitive loss structures completed by the National Wildlife Federation found that 20 percent of these structures are listed as being outside of the 100 -year floodplain. 1] According to the Department of Natural Resources (DNR), (February 2009 report) Hennepin County has 32 repetitive loss structures. Of those 32 structures (which are single-family homes or nonresidential structures), 13 have been mitigated and 6 are insured. Below is a map of the location of Hennepin County's repetitive loss structures. HennE�pin County Repetitive Losses ®' RepetiliveLosses Repetitive Losses refer to properties that have had a history 100 year Floodplain of losses throughout Hennepin County. - 500 year Floodplain Map MaEaE LYtM Hamapin Lourdy EP DNkbn Jarrvay 5. 2710. Hmnepn Coukg mNes m ananty, repramWion, a awrm4. a to Ta oorlmt aoavaoy. tlnrtFess, or oompkknm a acv win: iworm�wn wowaad mr.e. .Y 0 1.25 2.5 5 I I i i t Miles Page 162 Hennepin County MMgaUon Plan Vulnerability Assessment 4.5 Capability Assessment A capability assessment is an integral part of the planning process in which we identified, re- viewed and analyzed what Hennepin County is doing to reduce risk. A capability assessment also allows us to identify a framework that is in place or should be in place for implementation of new mitigation actions. A capability assessment has two components: an inventory of our jurisdictions existing planning and regulatory tools; and an analysis of our capability to carry them out. The assessment process helps identify existing gaps, conflicts or weaknesses that may need to be addressed through future mitigation planning goals, objectives and actions. It will also highlight the positive measures in place or already being performed that should con- tinue to be supported and enhanced through future mitigation efforts. For this assessment, we evaluated our governmental struc- ture, political framework, legal jurisdiction, fiscal status, policies and programs, regulations and ordinances, and re- source availability. These factors were evaluated with re- spect to their strengths and weaknesses in preparing for, re- sponding to and mitigating the effects of the profiled haz- ards. Our assessment would not be complete without con- sidering the municipalities. Local municipalities have their own governing body, enforce their own rules and regula- tions, purchase their own equipment, maintain their own infrastructure, and manage their own resources. In many ways, Hennepin County is only as good as the capabilities of its municipali- ties. As such, this assessment does not consider Hennepin County as a lone entity, but evalu- ates it in the light of the various characteristics and differences of and between its forty-five municipalities. As a result, this assessment takes a comprehensive look at mitigation strategies within the county without focusing on specific projects currently in place. Page 163 1047�01 EM • looneoln Comm mmustion Plan Vulnerability Assessment Page 164 U 71 Y x tuo> cao � u U u ° > 03 U v, C,3 N cl 3 U Q a� _ _O+ cC . ¢ O U L: cz 05 U U c3 > y ' O '� a cn cn > c U _ W ? `li W - • U W `c - U xa�Q� U x•�� U � a cz c a cl - cn ° Q a ;:i 3 c p, cncl o Z U Page 164 Hennepiim County MIUgetlen Plan Vulnerability Assessment Page 165 0 Cd - 8 yC yC yC � Y O on 'C3 cn Cd y U A tQ U o Q O a 1 -0 W Page 165 0 0 0 N$mm@Qll c@om MMOBO@R Plan V9i20£abilily Assessment Paac 166 % / § � � \ § cdo 2 d g k k U) 71 . \ It .� \ Cd . w � § - 6 © � U � m § c � - U q . � - k � / § ƒ § E c cl O 2 . v § § o c § «a 0 @ r © 3 to S 2 2 ƒ y f 3 ƒ a Paac 166 Hennepin County Mltigatlon Plan Vulnerability Assessment Page 167 0 O Q Q. U Cd o C03 cl CI O to Cd En N Ln C4 yC _ 3 w -� wca cd Z U a U O C4 —� bA - ocd Q+ m U a) W to a to 0 a Cf) cn r� Page 167 0 • • • NORROPIN County Mlduadon Plan Vulnerability Assessment Financial Resources Accessible or Eligible Community Development Block Grants Yes Capital Improvements Programming Yes Special Purpose Taxes (or taxing districts) Yes Gas/Electric Utility Fees Yes Water/Sewer Fees Yes Stormwater Utility Fees Yes Development Impact Fees Yes General Obligation, Revenue and/or Special Yes State sponsored grant programs such as Hazard Mitigation Grant Program or Pre - Yes Storm Emergency Financial Assistance Yes Page 168 Hennepin County mldgadon Plan Mitiy-ation Strate ies -- SECTION 5 Hennepin County MITIGATION STRATEGIES X, 0 Hennepin County IMiogation Plan Mitigation Strategies • Section 5 Mitigation Goals, Objectives and Actions 5.1 Overview This section of the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan de- scribes the mitigation goals, objectives and actions. Up to this point in the planning process, the HCWG, with input from all Hennepin County jurisdictions, have assessed natural and tech- nological hazards. Profiles of Hennepin County's hazards as well as our vulnerability to them resulted from this effort, which is documented in the preceding chapters of this plan. The re- sulting goals, objectives and mitigation actions were developed based on this profile. 5.1.1 2004 Mitigation Goals There were several mitigation projects identified in the 2004 Hennepin County Hazard Mitiga- tion Plan. The overarching goal was to identify measures that would prevent loss of life and damage to property, while also reducing future risk in Hennepin County. Strategies were not prioritized due to each jurisdiction setting its own priorities. To prioritize, when funds became available, the Mitigation Steering Committee at the time had input on county -wide priorities. The following is a list of the 2004 mitigation goals, objectives and strategies, along with an up- date on what has or has not been accomplished. • Hazard: Flooding Is Goal 1: To prevent flood damage. Objective 1.1.1 To prevent spring runoff flood damage to property. Strategies: 1) Identified areas of repetitive loss (City of Dayton berm building, City of Champlin flood areas due to ice buildup, Hassan Township County Road 116 and the Crow River Bridge. 2) Prioritize possible projects within communities and make initial contact with elected offi- cials. * Implementation Update: Repetitive loss structure in Hassan Township was purchased at auction in 2005 with the knowledge of its repetitive loss history. Current owners rebuilt the home to withstand repetitive flooding and lessen the damage associated with it. The Crow River Bridge in Hassan Township was rebuilt and raised so that future flood damage does not occur. The City of Dayton and the City of Champlin will not be moving forward with mitigation actions. Page 169 Hennepin County Wgatlon Plan Mitigation Strategies Objective 1.2.2: To prevent damage to property from flooding due to heavy rain events. Strategies: 1) Identify areas that flood during heavy rain (City of Medina at Tamarack Road and Elm Creek, Hassan Township at Tucker and Bechthold Road, County Road 144 and Willan- dale, City of Greenfield at County Road 50 north of entrance to Rebecca Park, Vernon and Basswood, Greenfield Road and 78th Lane, Greenfield Road just north of Highway 55). 2) Prioritize possible projects within communities and make initial contact with elected offi- cials. * Implementation Update: County Road 50 continues to flood when the Crow River has high years. Vernon and Basswood were mitigated after construction of the roads a few years back. There has been no mitigation implemented for Greenfield Road and 78th and Highway 55. No mitigation has occurred at Tucker and Bechthold Road or County Road 144 off of Willandale. Flooding did occur in 2010 causing County Road 144 to flood. A mitigation project that would lift the road is in talks. Medina has not implemented any mitigation at Tamarack Road and Elm Creek. Objective 1.3.3: To prevent damage to property from flooding due to inadequate infrastruc- ture. Strategies: 0 1) Map areas of flooding due to inadequate infrastructure (City of St. Anthony at Silver Lake Rd and St. Anthony Blvd, City of Osseo in areas of 1st Ave NW south to Highway 81). 2) Educate citizens about how to avoid this type of flooding. A) promote installation of back- flow valves and B) promote value of elevating furnace, water heater and other basement machinery. * Implementation Update: We currently use our GIS Specialist to provide mapping of repeti- tive flooding that have been identified by our cities. We have not educated citizens on the in- stallation of backflow valves since the issue has not been a concern of our citizens. Objective 1.4.4: To prevent damage caused by dams or levee failure. Strategies: 1) Make sure dams and levees are properly maintained. 2) Ensure that those living in proximity to dams and levees have an emergency plan. * Implementation Update: We will continue to partner with the Minnesota Department of Natural Resources Dam Safety Program since they ensure dams are safe, properly maintained, and are removed when they become obsolete. Most dams in Hennepin County do not pose a 0 Page 170 Hennepin Plounly Mitigation Plan Mitigation Strategies • significant threat to the general public so this mitigation measure has been eliminated. Hazard: Thunderstorms/Tornadoes Goal 2.1: To prevent wind damage to persons and property from tornadoes, windstorms, straight line winds, and thunderstorms. Objective 2.1.1: To prevent damage to persons and property from tornadic activity. Strategies: 1) Help citizens realize the strength and danger of tornadoes through severe Weather Aware- ness Week. 2) Promote safe rooms through testimonials from those who have benefited from a safe room and by urging local builders to put safe rooms in structures with no basements, especially slab on ground townhomes. 3) Pass ordinances that require community shelters in developments that have slab on ground housing. * Implementation Update: Severe Weather Awareness week continues to be an ongoing yearly education effort by our department. We handed out FEMA 320: Taking Shelter from the • Storm: Building a Safe Room inside Your Home to City of Rogers officials following the 2006 tornado. We also gave city officials the Windstorm Mitigation Manual for Light Frame Con- struction during the reconstruction efforts. Ordinances have not been passed that require com- munity shelters in developments that have slab on ground housing. Objective 2.1.2: To prevent damage to persons and property from windstorms and straight-line winds. Strategies: 1) Educate the public on the dangers of straight-line winds by occupying booths at local juris- dictions celebrations and handing out brochures at special events. 2) Promote safe rooms. * Implementation Update: Promotion of safe rooms began after the 2006 Rogers tornado. The Windstorm Mitigation Manual for Light Frame Construction was given to Rogers officials during the reconstruction efforts. Hazard: Winter Storms Goal 3.1: To mitigate losses to people and property during severe winter weather (blizzards • and extremely cold temperatures). Objective 3.1.1: Urge the public to heed winter weather warnings and advisories when posted. Page 171 Nennepin County mKin lon Plan Mitigation Strategies 1) Promote winter survival kits during Winter Weather Awareness. * Implementation Update: Winter Weather Awareness is an ongoing yearly effort that helps to get the general public ready for winter storms. Included in the Winter Weather Awareness brochures and webpage's is information on winter survival kits, winter weather advisories, and winter storm warnings. Hazard: Drought/Extreme Temperatures Goal 4.1: To mitigate losses to people and property during drought or extreme heat. Objective 4.1.1: Review community water plans and update as needed. Objective 4.1.2: Check with local social service organizations to those are susceptible to heat - related illness (elderly and the very young) and map possible shelters that could be opened if need be. * Implementation Update: In 2006 a regional task force (SuperHot) was established to imple- ment a warning system to alert people of dangerously hot temperatures and information on shelters. Water plans are the responsibility of the municipalities and are updated as needed. Hazard: Infectious Diseases/Terrorism Goal 5.1: To mitigate losses to people and property in the event of an infectious disease out- break or terrorist incident. Objective 5.1.1: To help residents survive an infectious disease outbreak. Strategies: 1) Plan with Hennepin County's Public Health officials on subjects such as quarantine and identifying mass clinic sites and what it will take to equip and staff them. 2) Educate the public on precautions to take concerning infectious diseases. Objective 5.1.2: To help the community survive a terrorist incident. Strategies: 1) Ensure that first responders are properly equipped and trained. This can be done through grant money and yearly refresher training. 2) Give public information on basic measures that can be taken to protect themselves. Infor- mation should be basic, easy to follow, and designated to not cause panic and ridicule. * Implementation Update: Since 2005, Hennepin County has been using Urban Area Security Initiative Grants (UASI) to equip first responders with the necessary equipment to respond to terrorist attacks. Several of those dollars have also gone to yearly training of first responders. Page 172 Hennepin :ounty MIUMon Plan Mitigation Strategies • In the past three years Hennepin County Public Health has established mass distribution sites that would be used to transfer and store mass prophylaxis to prepare for a public health emer- gency. Hazard: Earthquake/Karst Topography Goal 6.1: To mitigate the effects of an earthquake or incident caused by karst topography. Objective 6.1.1: Be aware of the geology in the community and know if these hazards exist there. Objective 6.1.2: Avoid placing sensitive structures in areas where earthquakes or karst features could cause structural damage. * Implementation Update: Due to the limited karst topography in Hennepin County, this miti- gation measure was eliminated. Through the University of Minnesota Morris and the United States Geological Survey, we are able to identify areas in Hennepin County that have experi- enced earthquake waves (Mercalli Intensity). However, due to the rare history of earthquake activity in Hennepin County, this mitigation measure was eliminated. Hazard: Solar Storms Goal 7.1: To lessen the effects of solar storms on people and property. Objective 7.1.1: Keep current on the frequency of sun spot cycles. Objective 7.1.2: Harden sensitive communications equipment to the effects of geomagnetic or solar storms. * Implementation Update: In between the 2005 and 2010 update to the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan, the hazard of solar storms was eliminated due to the low intensity of sun spots. Hazard: Radiological Goal 8.1: To lessen the effects of radiological incidents or releases on people and property. Objective 8.1.1: To eliminate exposure to radiological sources. Strategies: 1) Train first responders on time, distance, and shielding principles. 2) Enhance ability to detect radiological sources. Objective 8.2.2: To have a trained cadre to monitor exposure to radiation. • Strategies: Page 173 Hennew m County Mftlganon Pion Mitigation Strategies 1) Hennepin County Public Health staff will be trained in radiological monitoring. 2) Hennepin County Public Health will practice survey and decontamination procedures at the Rogers Reception Center drills and exercises and through yearly training. * Implementation Update: Hennepin County hosts a Reception Center for the off-site re- sponse to an incident at the Monticello Nuclear Generating Plant. Hennepin County currently has staff trained to perform all the survey and decontamination procedures. Trained staff in- cludes Rogers Fire, Dayton Fire, Minneapolis Fire, Brooklyn Center Fire, Hennepin County Public Health, Hennepin County Emergency Preparedness, and Minneapolis Health & Family Support. Reception Center staff are trained on a yearly basis with FEMA evaluated exercises occurring every three years. Drills usually occur every two years and include set-up training. Hazard: Hazardous Materials Goal 9.1: To lessen the effects of a hazardous materials release on people and property. Objective 9.1.1: Know and map all fixed facilities located in Hennepin County. Strategies: 1) Acquire a list of all 302 facilities in Hennepin County from the Minnesota Division of Homeland Security and Emergency Management (HSEM) every year. 0 2) Make site visits to those facilities that pose the most threat. Objective 9.1.2: Have copies of 302 facility plans in the emergency management office and/or the city fire departments. Objective 9.1.3: Work with facility coordinators so that they are aware of local capabilities and vice versa. Strategies: 1) Train with the coordinators of the 302 facilities. 2) Exercise with the coordinators of the 302 facilities, through site-specific scenarios. * Implementation Update: Hennepin County Emergency Preparedness currently has an up- dated list of all 302 facilities and they have also been mapped into the Hennepin County Plan- ning Groups using GIS (See the Hazardous Materials Hazard Profile). Fire departments make site visits to 302 facilities on an ongoing basis and 302 facility plans are kept on file in the city fire departments. Hazard: Dams Goal 10.1: To ensure proper maintenance of darns to provide safety to residents and to prevent Page 174 Hennepin sunty Ml oMon Plan Mitigation Strategies property damage. Objective 10.1.1: Use existing state and federal dam safety programs to ensure safety of dams. * Implementation Update: MN Dam Safety Program oversees the maintenance and struc- tural integrity of dams. This is an ongoing mitigation effort. Hazard: Water Supply Contamination Goal 11.1: To lessen or eliminate negative effects of water supply contamination. Objective 11.1.1: To keep the water supply safe by locking doors on water facilities, requiring proper identification for access into facilities, extra security for orange (or higher) alerts, and safeguarding aquifers by maintaining a strong wellhead protection program. Objective 11.1.2: Have alternate water supply options. Strategies: 1) Share water supply with neighboring counties. 2) Identify sources of potable water. Objective 11.1.3: Conserve water. Strategies: 1) Update community water plan as needed. 2) Identify triggers for implementation of water conservation measures. * Implementation Update: Identifying sources of potable water is an ongoing planning activ- ity of the municipalities. Community water plans are updated as needed and all Hennepin County municipalities have oddleven water day restrictions in place for water conservation. Water Supply Contamination was a hazard that was eliminated from the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan. Page 175 Hennepin County Miugeti0n Pian Mitigation Strategies 5.2 2010 Mitigation Actions During the 2010 update to the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan, several new mitigation actions were identified in addition to the original 2005 actions. Below is a listing of the measures including the responsible agency and cost benefit. The miti- gation actions may fall under one or more of the following six broad categories: Prevention - Government administrative or regulatory actions or process that influence the way land and buildings are developed and built. These actions also include public activities to reduce hazard losses. Examples include planning and zoning, building codes, capital improvement programs, open space preservation, and storm water man- agement regulations. Property Protection - Actions that involve the modification of existing buildings or infrastructure to protect them from a hazard, or removal from the hazard area. Exam- ples include acquisition, elevation, relocation, structural retrofits, flood proofing, storm shutters, and shatter -resistant glass. Public Education & Awareness - Actions to inform and educate citizens, elected offi- cials, and property owners about potential risks from hazards and potential ways to miti- gate them. Such actions include outreach projects, real estate disclosure, hazard infor- mation centers, and school-age and adult education programs. Natural Resource Protection - Actions that, in addition to minimizing hazard losses also preserve or restore the functions of natural systems. These actions include sedi- ment and erosion control, stream corridor restoration, watershed management, forest and vegetation management, and wetland restoration and preservation. Structural Projects - Actions that involved the construction of structures to reduce the impact of a hazard. Such structures include storm water controls (e.g., culverts), flood walls, seawalls, retaining walls, and safe rooms. 5.3 Cost Benefit Review Priority mitigation projects will only be implemented if the benefits are maximized and out- weigh the associated costs of the proposed projects. Projects should be evaluated for eligibility and feasibility including social impact, environmental impact, technical feasibility, and other criteria that measure project effectiveness. Further project implementation will be subject to the availability of FEMA grants and other sources of funds from year-to-year. Page 176 Hennepin anty MloymoOn Plan Mitigation Strategies 0 Hazard: Dams Goal 1: Maintain continued structural integrity of dams located in Hennepin County. Objective 1.1.1: Ensure dams are maintained and functioning properly. Strategies: 1) Continue to use existing state dam safety programs (Minnesota Dam Safety Program) that maintain and oversee the structural integrity of dams. Responsible Agency: Minnesota Department of Natural Resources, Hennepin County Emer- gency Preparedness, and the municipalities. Cost: Staff time Time: Ongoing • 5.4 Hazard: Flooding Participation in the National Flood Insurance Program The United States Congress established the National Flood Insurance Program (NFIP) with the passage of the National Flood Insurance Act of 1968. The NFIP is a Federal program enabling property owners in participating communities to pur- chase flood insurance as a protection against flood losses in exchange for State and community floodplain management regulations that reduced future flood damages. Participation in the NFIP is based on an agreement between communities and the Federal Government. If a community adopts and en- NATIONAL FLOOD INSURANCE PROGRAM forces a floodplain management ordinance to reduce future flood risk to new construction in floodplains, the Federal Government will make flood insurance available within a community as a financial protection against flood losses. This insurance is designed to provide an insur- ance alternative to disaster assistance to reduce the escalating costs of repairing damage to buildings and their contents caused by floods. According to the Federal Emergency Management Agency's (FEMA) Community Status Book Report, there are currently 41 Hennepin County cities participating in the National Flood Insur- ance Program. A detailed table that shows each of the cities Initial FHBM and FIRM dates as • well as Current Eff Map Date and Reg Emerg Date is included below. Page 177 Hennepin COUR" MCigaUon Plan Mitigation Strategies Bloomington 275230 NA 9/8/72 9/2/04 9/8/72 Brooklyn Center 270151 11/9/73 2/17/82 9/2/04 2/17/82 Brooklyn Park 270152 4/12/74 5/17/82 9/2/04 5/17/82 Champlin 270153 11/02/73 07/18/77 09/02/04 07/18/77 Corcoran 270155 06/07/74 01/06/81 09/02/04 01/16/81 Crystal 270156 11/30/73 06/01/78 09/02/0.1 06/01/78 Dayton 270157 01/04/74 02/01/78 09/02/04 02/01/78 Deephaven 270158 06/07/74 09/02/04 09/02/04 12/26/78 Eden Prairie 270159 03/01/74 09/27/85 09/02/04 09/27/85 Edina 270160 02/01/74 05/01/80 09/02/04 05/01/80 Excelsior 270161 05/31/74 12/01/77 09/02/04 03/20/81 Golden Valley 270162 03/08/74 02/04/81 09/02/04 02/04/81 Greenwood 270164 05/31/74 09/02/04 09/02/04 12/26/78 Hassan Township 270678 02/10/78 03/16/81 09/02/04 03/16/81 Hopkins 270166 11/09/73 05/05/81 09/02/04 05/05/81 Independence 270167 06/28/74 01/06/83 09/02/04 01/06/83 Long Lake 270168 06/07/74 09/02/04 09/02/04 02/20/79 Loretto 270659 01/24/75 09/20/04 09/02/04 06/22/84 Maple Grove 270169 03/22/74 04/17/78 09/02/04 04/17/78 J Page 178 N®nnepin Coom NNOBtlon Plan Mitiy-ation Strategies Page 179 Maple Plain 270170 05/03/74 09/02/04 09/02/04 06/22/84 Medicine Lake 270690 12/17/76 04/15/82 09/02/04 04/15/82 Medina 270171 06/28/74 09/03/80 09/02/04 09/03/80 Minneapolis 270172 03/22/74 01/18/81 09/02/04 02/18/81 Minnetonka 270174 06/07/74 09/02/04 09/02/04 06/22/84 Beach Minnetonka 270173 08/23/74 05/19/81 09/02/04 05/19/81 Minnetrista 270175 01/13/78 09/27/85 09/02/04 09/27/85 Mound 270176 06/07/74 09/29/78 09/02/04 09/29/78 New Hope 270177 09/06/74 01/02/81 09/02/04 01/02/81 • Orono 270178 08/16/74 10/17/78 09/02/04 10/17/78 Osseo 270658 01/10/75 09/02/04 (NSFHA) 12/21/78 Plymouth 270179 02/08/74 05/15/78 09/02/04 05/15/78 Richfield 270180 05/17/74 09/02/04 (NSFHA) 08/24/81 Robbinsdale 270181 03/29/74 08/01/77 09/02/04 08/01/77 Shorewood 270185 05/31/74 12/04/79 09/02/04 12/04/79 Spring Park 270186 06/07/74 05/01/79 09/02/04 05/01/79 St. Bonifacius 270183 06/07/74 09/02/04 09/02/04 12/26/78 St. Louis Park 270184 05/25/73 06/01/77 09/02/04 06/01/77 Tonka Bay 270187 06/07/74 05/01/79 09/02/04 05/01/79 Wayzata 270188 06/21/74 11/01/79 09/02/04 11/01/79 • Woodland 270189 05/31/74 08/01/79 09/02/04 08/01/79 Page 179 Hennepin County MRIgaUon Plan Mitigation Strate ies 5.5 Continued Participation in the NFIP 0 All Local Mitigation Plans approved by FEMA after October 1, 2008 must describe each juris- dictions participation in the NFIP and must identify, analyze and prioritize actions related to continued compliance with the NFIP. Basic compliance NFIP actions could include, but are not limited to: 1. Adoption and enforcement of floodplain management requirements, including regulating all and substantially improved construction in Special Flood Hazard Areas (SFHAs); 2. Floodplain identification and mapping, including any local requests for map updates, if needed; or, 3. Description of community assistance and monitoring activities. The flood mitigation goals listed below include identified NFIP related actions (highlighted in green) that will help the municipalities continue compliance with the NFIP. Goal 2: Ensure that 100 year flood risks are addressed by all county municipalities in their land use, land use planning and management. Objective 2.1.1: Ensure floodplain -zoning ordinances are in compliance with state and federal regulations. Strategies: 1) Encourage county/city participation in FEMA's Community Rating System program. 2) Participate in the National Flood Insurance Program (NFIP). 3) Ensure building code compliance inspections are conducted on new construction projects. 4) Update land use plans to identify areas where development should be restrictive. 5) Enforce floodplain management rules requiring new structures be elevated above the BSE (Base Floodplain Elevation). 6) Obtain and maintain NFIP FIRMS to identify community flood plains. 7) Require floodplain and shorelines ordinances to comply with MN DNR requirements. 8) Continue to enforce zoning and permit regulations in the floodplains. 9) Continue to comply with drainage and erosion control plans. 10) Monitor construction, improvements, alterations, and development in the floodplains. 0 Page 180 Hennealn COMM NNUBUen Plan Mitigation Strategies • 11) Continue to work with the watershed management commissions on all proposed projects impacting floodplain areas. 12) Continue to enforce stormwater management ordinances that address land -disturbing activi- ties. Goal 2.1: Identify and mitigate flood prone structures and infrastructure in the county. Objective 2.1.2: To reduce the impact of flooding on new buildings and infrastructure Strategy: 1) Identify and improve roads and streets that are repeatedly flooded and washed away with improvements that include modifying and raising roads/streets, providing improved drain- age and storm water removal, and creating buffers. 2) Municipalities should adopt or update floodplain ordinances as needed. 3) Map areas of repeated flooding in the county. 4) Potential buyout of structures in hazard areas. 5) Elevating structures to reduce flood loss • 6) Improving drainage capacity of ditches. Responsible Agency: Hennepin County Emergency Preparedness & the municipalities Cost: Staff time Time: Ongoing Goal 2.2: Improve the readiness of the county in the event offlooding. Objective 2.2.2: Ensure that the county and local municipalities are prepared for potential flooding. Objective 2.2.3: Ensure that there is adequate warning of rising waters throughout the river and stream network. Strategy: 1) Develop a resource list of available sandbag distributors. 2) Encourage continued compliance with the National Flood Insurance Program (NFIP) and encourage non -participating cities and townships to apply. • 3) Educate the public on practices and programs that assist in diminishing the effects of flood- ing. Page 181 Hennepin County Ml InNon Plan Mitigation Strate ies 4) Discuss future river gauges with the Minnesota Department of Natural Resources (DNR) and the United States Geological Survey (USGS). 0 Responsible Agency: Hennepin County Emergency Preparedness and the municipalities. Cost: Staff time Time: Ongoing Hazard: Hazardous Materials Goal 3: Work to ensure that emergency personnel and other potentially affected parties are informed about hazardous materials/waste located in and transported through Hennepin County. Objective 3.1.1: Support policies aimed at reducing hazardous waste spills on transportation routes. Objective 3.1.2: Ensure new technologies are used to improve the county's ability to respond to a disaster. Objective 3.1.3: Support policies and programs that assist in creating factual and timely infor- mation about hazardous materials/waste stored in or transported through Hennepin County. Strategy: 1) Continue to use city and county Geographic Information Systems (GIS) to map and update locations of fixed facilities using hazardous materials/waste and associated transportation routes in a timely manner. 2) Increase coordination with the State Duty Officer for highway spills. 3) Work with city, state, federal agencies and private industries to share information on types and locations of hazardous material that have the potential to affect the county and region. 4) Ensure that all essential first responder agencies have the latest edition of the Emergency Response Guidebook. Responsible Agency: Hennepin County Emergency Preparedness, Hennepin County GIS De- partment, and the municipalities. Cost: Staff time Time: Ongoing Hazard: Infectious Diseases Goal 4: Reduce the threat of infectious diseases through education, training and preparedness. Page 182 Hennepin Countp mmendon Plan Mitigation Strategies • Objective 4.1.1: Collaborate with partner agencies to prevent, detect, and control infectious diseases. Objective 4.1.2: Maintain and update resources, materials, plans, and agreements that address coordinated infectious disease response. Objective 4.1.3: Educate the public through disease information designed to prevent and con- trol disease transmission. Strategy: 1) Develop an education program that provides useful and factual information to the public about infectious diseases and vaccinations. 2) Continue to work with Public Affairs to disseminate information about infectious diseases and prevention 3) Maintain links to other sources of reliable information about infectious diseases and preven- tion. 4) Utilize state, federal and local resources to prevent and control infectious disease in the county. • 5) Continue to partner with local/regional hospitals and clinics in developing plans and roles in infectious disease response, including quarantine. 6) Continue to partner with the Minnesota Department of Health on the receipt and dispensing of the Strategic National Stockpile. Responsible Agency: Hennepin County Public Health and the municipalities Cost: Staff time Time: Ongoing Hazard: Thunderstorms/Tornadoes Goal S: To protect people and public infrastructure. Objective 5.1.1: To reduce the impact of thunderstorms/tornadoes on new buildings and infra- structure. Strategy: 1) Encouraging new power lines to be buried to reduce power outages. 2) Promoting enhanced building techniques to reduce structural damage due to high wind • damage (example: Windstorm Mitigation Manual for Light -Frame Construction). Page 183 Hennepin County MltlgaUon Plan Mitigation Strategies Responsible Agency: Wright -Hennepin Cooperative Electric Association. 0 Cost: Grant funding and staff time. Time: Ongoing Goa! 5.2: Improve severe storm warning systems for a quicker and more efficient notification of county residents. Objective 5.2.2: Research and assess new technology that will enable county sirens to be acti- vated through the new National Weather Service (NWS) Storm -Based Polygon Warning Sys- tem. Objective 5.2.3: Improve access to real-time weather data. Objective 5.2.4: Improve citizen access to severe weather warnings. Strategy: 1) Use Urban Area Security Initiative (UASI) dollars to fund the upgrades to the radios and decoder boards on the sirens, in an effort to not only reach compliance with the new FAA narrow banding standards, but as well as to implement a new Storm -Based Polygon Warn- ing System. 2) Improve citizens' understanding of the available communications from the National weather Service (NWS) for notification of severe weather watches and warnings such as NOAA Weather Radios. 3) Assess and upgrade the city/county warning system as necessary. 4) Evaluate the use of private subscription -based weather alert services and purchase if cost effective. 5) Promote the use of weather radios and when possible, purchase additional radios for the mu- nicipalities. 6) Improve access to real-time weather data such as temperatures, wind speed, direction and storm conditions for emergency personnel. 7) Identify ways to increase access to emergency information for campgrounds, cities, and pro- vide information in a timely manner. 8) Create severe weather awareness campaigns for citizens that covers siren information, NOAA Weather Radio, how the National Weather Service (NWS) issues warnings, and the hazards that affect Hennepin County. 9) Promote the use of NOAA weather Radio for early warning and post event information in Page 184 Henn110unty MitInuon P18n Mitigation Strategies 0 government-owned facilities, child care centers, and for vulnerable populations. 10) Achieve certification in the National Weather Service's (NWS) StormReady program. The StormReady program has been developed to provide communities guidelines to improve the timeliness and effectiveness of hazardous weather-related warnings for the public. 11) Public education and awareness of severe weather. Responsible Agency: Hennepin County Emergency Preparedness, Hennepin County Sheriff's Office & the municipalities. Cost: Grand funding available and staff time. Time: Ongoing 5.6 Mitigation Action Items Requirement 201.6(c)(3)(iv) of the Local Multi -Hazard Mitigation Planning Guidance states that all multi jurisdictional plans must have identifiable action items specific to the jurisdiction requesting FEMA approval or credit for the plan. The action items listed in this section of the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan are both hazard specific is (e.g., strategies for flood mitigation) and multi -hazard (i.e., cuts across all specific hazards). The mitigation actions are also short and long-term strategies meant to reduce the risk to Hen- nepin County from both natural hazards and man-made hazards. Below are the individual mu- nicipality action plans under their respective planning groups. Lake Minnetonka Planning Group City Project (In Priority Order) Cost Time Line Responsible Agency Corcoran 1. Create severe weather awareness campaigns for citizens. Staff Time Ongoing Corcoran Police Deephaven 1. Enforce burning restrictions $100 3 Years Deephaven Fire 2. Maintain, enforce, and update zoning ordinances $700 5 Years Planning Commission 3. Revise/update local emergency operations plans $700 2 Years Deephaven Police 4. Dispense educational materials to citizens about potential $300 1 Year Deephaven Police disasters. • Page 185 Nennepini County MitlMon Plan Mitigation Strategies Lake Minnetonka Planning Group City Project (In Priority Order) Cost Time Line Responsible Agency Greenfield 1. Citizen public education and awareness of severe weather Staff time Ongoing Greenfield Emergency Management Mound 1. Ensure building code compliance inspections are con- Staff Time Ongoing Com. Development ducted on new construction projects 2. Encourage city/county participation in FEMA's Commu- Staff Time Ongoing Mound Police nity Rating System program. 3. Participate in the National Flood Insurance Program Staff Time Ongoing Mound Police 4. Identify and improve streets that are repeatedly flooded Staff Time Ongoing Mound Public Works and washed away with improvements that include modify- ing and raising roads/streets, providing improved drainage and storm water removal, and creating buffers. 5. Municipalities should adopt or update floodplain ordi- Staff Time Ongoing Com. Development nances as needed. 6. Educate the public on practices and programs that assist Staff Time Ongoing Mound Police in diminishing the effects of flooding. 7. Develop a resource list of available sandbag distributors Staff Time Ongoing Mound Public Works 8. Work with city, state, and federal agencies and private Staff Time Ongoing Mound Fire industries to share information on types and locations of hazardous material that have the potential to affect the county and region. 9. Continue to use city and county GIS to map and update Staff Time Ongoing Mound Police locations of fixed facilities using hazardous materials/waste storage and associated transportation routes in a timely man- ner. I O.Ensure that all essential first responder agencies have the Staff Time Ongoing Mound Fire latest edition of the Emergency Response Guidebook. 11. Continue to partner with local/regional hospitals and Staff Time Ongoing Mound Police clinics in developing plans and roles in infectious disease response, including quarantine. 12. Maintain links to other sources of reliable information Staff Time Ongoing Mound Police about infectious diseases and prevention 13. Continue to work with Public Affairs to disseminate Staff Time Ongoing Mound Police information about infectious diseases and prevention. 14. Encouraging new power lines to be buried to reduce Staff Time Ongoing Mound Police power outages. 15. Promoting enhanced building techniques to reduce struc- Staff Time Ongoing Mound Police tural damage due to high wind damage . 16. Improve citizens' understanding of available communi- Staff Time Ongoing Mound Police cations from the National Weather Service for notification of severe weather watches and warnings such as NOAA Weather Radios. Page 186 HennFlounlymmuodon Plan Mitijzation Strategies Page 187 Lake Minnetonka Planning Group City Project (In Priority Order) Cost Time Line Responsible Agency Mound 17. Create severe weather awareness campaigns for citizens. Staff Time Ongoing Mound Police (continued) 18. Promote the use of NOAA Weather Radio for early Staff Time Ongoing Mound Police warning and post event information in government-owned facilities, child care centers, and for vulnerable populations. Orono 1. Continue to participate in the National Flood Insurance Staff Time Ongoing Orono Police Program. 2. Update land use plans and identified areas where develop- Staff Time Ongoing Orono Police ment should be restricted. 3. Continue to use city GIS to map and update locations of Staff Time Ongoing Orono Police fixed facilities using hazardous materials. 4. Ensure that all essential first responders have the current Staff Time Ongoing Orono Police version of the Emergency Response Guidebook. Woodland 1. Enforce burning restrictions $100 3 Years Deephaven Fire 2. Maintain, enforce, and update zoning ordinances $700 5 Years Planning Commission 3. Revise/update local emergency operations plans $700 2 Years Deephaven Police 4. Dispense educational materials to citizens about potential $300 1 Year Deephaven Police disasters. is Lake 1. Continue to participate in the National Flood Insurance Staff Time Ongoing Orono Police Program. 2. Update land use plans and identified areas where develop- Staff Time Ongoing Orono Police ment should be restricted. 3. Continue to use city GIS to map and update locations of Staff Time Ongoing Orono Police fixed facilities using hazardous materials. 4. Ensure that all essential first responders have the current Staff Time Ongoing Orono Police version of the Emergency Response Guidebook. Minnetonka Beach 1. Continue to participate in the National Flood Insurance Staff Time Ongoing Orono Police Program. 2. Update land use plans and identified areas where develop- Staff Time Ongoing Orono Police ment should be restricted. 3. Continue to use city GIS to map and update locations of Staff Time Ongoing Orono Police fixed facilities using hazardous materials. 4. Ensure that all essential first responders have the current Staff Time Ongoing Orono Police version of the Emergency Response Guidebook. Spring Park 1. Continue to participate in the National Flood Insurance Staff Time Ongoing Orono Police Program. 2. Update land use plans and identified areas where develop- Staff Time Ongoing Orono Police ment should be restricted. 3. Continue to use city GIS to map and update locations of Staff Time Ongoing Orono Police fixed facilities using hazardous materials. 4. Ensure that all essential first responders have the current Staff Time Ongoing Orono Police version of the Emergency Response Guidebook. Page 187 Hennepin County Mitigation Plan Mitigation Strategies Lake Minnetonka Planning Group City Project (In Priority Order) Cost Time Line Responsible Agency Medina 1. Wellhead protection plan $30,000 Ongoing City of Medina 2. Maintain Inter County roads $230,000 Ongoing City of Medina 3. Establish multi jurisdictional partnership to reduce runoff $200,000 5 Years City of Medina Loretto 1. Well head protection plan $30,000 Ongoing City of Loretto 2. Maintain Inter County roads $230,000 Ongoing City of Loretto Ongoing 3. Establish multi jurisdictional partnership to reduce runoff $200,000 5 Years City of Loretto Minnetrista 1. Obtain and maintain NFIP FIRMS to identify community Staff time Ongoing Minnetrista Police Tonka Bay 1. Achieve certification in the National Weather Services flood plains. Ongoing South Lake PD StormReady Program. 2. Continue to participate in the National Flood Insurance Pro- Staff Time Ongoing Minnetrista Police Ongoing gram ing and post event information. 3. Map areas of repeated flooding in the county. Staff Time Ongoing Minnetrista Police St. Bonifacius 1. Obtain and maintain NFIP FIRMS to identify community Staff time Ongoing Minnetrista Police flood plains. 2. Continue to participate in the National Flood Insurance Pro- Staff Time Ongoing Minnetrista Police gram 3. Map areas of repeated flooding in the county. Staff Time Ongoing Minnetrista Police Excelsior 1. Achieve certification in the National Weather Services Staff Time Ongoing South Lake PD it StormReady Program. 2. Promote the use of NOAA Weather Radios for early warn- Staff Time Ongoing South Lake PD ing and post event information. 3.Create a severe weather awareness campaign for our citizens. Staff Time Ongoing South Lake PD Greenwood 1. Achieve certification in the National Weather Services Staff Time Ongoing South Lake PD StonnReady Program. 2. Promote the use of NOAA Weather Radios for early warn- Staff Time Ongoing South Lake PD ing and post event information. 3.Create a severe weather awareness campaign for our citizens. Staff Time Ongoing South Lake PD Shorewood 1. Achieve certification in the National Weather Services Staff Time Ongoing South Lake PD StonnReady Program. 2. Promote the use of NOAA Weather Radios for early warn- Staff Time Ongoing South Lake PD ing and post event information. 3.Create a severe weather awareness campaign for our citizens. Staff Time Ongoing South Lake PD Tonka Bay 1. Achieve certification in the National Weather Services Staff Time Ongoing South Lake PD StormReady Program. 2. Promote the use of NOAA Weather Radios for early warn- Staff Time Ongoing South Lake PD ing and post event information. 3.Create a severe weather awareness campaign for our citizens. Staff Time Ongoing South Lake PD EM Page 188 Hennepin ounty oftivation Plan Mitigation Strategies City Brooklyn Center North Suburban Emergency Planning Group Project (In Priority Order) Cost I Tine Line I Responsible Agency 1. Create a smoke detector program that would provide smoke $5,600 5 Years detectors to the general public for free. Brooklyn Park 1. Review/update local emergency operations plan 2. Designate equipment/personnel for tornado response 3. Train local emergency disaster responders 4. Maintain list of shelters for evacuation. 5. Develop/update/publicize city evacuation plans. 6. Continue to use city and county GIS to map and update loca- tions of fixed facilities using hazardous materials/waste and associated transportation routes in a timely manner. 7. Work with city, state, federal agencies and private industries to share information on types and locations of hazardous mate- rial that have the potential to affect the county and region. Staff Time Lake Minnetonka Planning Group Staff Time City Project (In Priority Order) Cost Time Line Responsible Agency Wayzata 1. Enact an building code ordinance which will ensure new $1,000 1 Year Building Inspections construction exceeding a predetermined number of square footage will have adequate in -building coverage for the 800 MHz trunked radio system. 2. Public outreach through several vehicles to include city Staff Time Ongoing Wayzata Police website, city newsletter, email and text message alerts, police department newsletter, and educational presentations to school age children as well as adults. Maple Plain 1. Disaster Response Training Staff Time Present Year West Hennepin PS 2. Review/update local emergency plans Staff Time Present Year West Hennepin PS 3. Well head protection $5,000 2-3 Years Planning 4. Replace undersized sewer Staff Time 1-4 Years Public Works 5. Install water impervious manhole covers Staff Time 1-3 Years Public Works Independence 1. Disaster Response Training Staff Time Present Year West Hennepin PS 2. Review/update local emergency plans Staff Time Present Year West Hennepin PS 3. Back up city files to an offsite location $3,500 1-2 Years West Hennepin PS 4. Install siren warning systems $100,000 7 Years West Hennepin PS i 5. Install water impervious manhole covers Staff Time 1-3 Years Public Works City Brooklyn Center North Suburban Emergency Planning Group Project (In Priority Order) Cost I Tine Line I Responsible Agency 1. Create a smoke detector program that would provide smoke $5,600 5 Years detectors to the general public for free. Brooklyn Park 1. Review/update local emergency operations plan 2. Designate equipment/personnel for tornado response 3. Train local emergency disaster responders 4. Maintain list of shelters for evacuation. 5. Develop/update/publicize city evacuation plans. 6. Continue to use city and county GIS to map and update loca- tions of fixed facilities using hazardous materials/waste and associated transportation routes in a timely manner. 7. Work with city, state, federal agencies and private industries to share information on types and locations of hazardous mate- rial that have the potential to affect the county and region. Staff Time Ongoing Staff Time July 2010 Staff Time Fall 2010 Staff Time Fall 2010 Staff Time 2011 Staff Time 2011 Staff Time 2011 Brooklyn Center Fire Brooklyn Park Police Brooklyn Park Police Brooklyn Park Police Brooklyn Park Police Brooklyn Park Police Brooklyn Park Police Brooklyn Park Police Page 189 city Hennepin County Mitigation Plan Mitiyation Strateles_ North Suburban Emergency Planning Group Project (In Priority Order) Cost I Time Line I Responsible Agency Champlin 1. Well Head Protection Plan $20,000 2014 Planning & Zoning 2. Mill Pond Dam Stream Stabilization Project $550,000 2011 Planning & Zoning 3. Mill Pond Dam Safety Improvement Project $1.5-4 M 2012 Planning & Zoning 4. Development of Mill Pond Reservoir $2.5-5M 2018 Planning & Zoning 5. Run-off Reduction Plan/TMDL $50,000 2014 Planning & Zoning 6. Elm Creek watershed Run-off Reduction Plan $100,000 2016 Planning & Zoning 7. Flood management training $15,000 2011 Planning & Zoning 8. Back-up location for city records $15,000 2012 Anoka Champlin Fire 9. Wild Fire Protection Plan $10,000 2012 Anoka Champlin Fire 10. Sand Bag Plan for residents subject to floodway $5,000 2013 Champlin Police 11. Elm Creek (Lower) Channel Study $100,000 2014 Planning & Zoning 12. Stream Bank Restoration Plan $100,000 2016 Planning & Zoning Dayton 1. Renovate and update the stone shelter at Daytonna Mobile $10,000 5 years Dayton Police Home Park 2. Promote the purchase of flood insurance for all residents in Staff Time Ongoing Dayton Police the high risk area 3. Promote community participation in the National Flood In- Staff Time Ongoing Dayton Police surance Program 4. Enforce burning restrictions. Staff Time Ongoing Dayton Fire 5. Encourage citizens to purchase and use smoke detectors. Staff Time Ongoing Dayton Fire 6. Update Dayton's warning (siren) system $15,000 5 Years Dayton Police 7. Maintain sandbags and floodfighting equipment Staff Time Ongoing Dayton Police Golden Valley 1. Continue to replace undersized sere and stormwater pipe, and 1.1 million Ongoing GV Public Works extend pipes to areas receiving new curb and gutter. 2. Continue to install water impervious manhole covers $50,000 Ongoing GV Public Works 3. Continue to monitor construction, improvements, alterations, Staff Time Ongoing GV Public Works and development in the floodplain 4. Continue to work with watershed management commissions Staff Time Ongoing GV Public Works on all proposed projects impacting floodplain areas. 5. Continue to enforce floodplain management rules requiring Staff Time Ongoing GV Public Works new structures be elevated above the BFE. Hassan Township 1. Clear and deepen ditches $4,500 Annually Hassan Township Emer- 2. Subdivision ordinance on retention basins $1,000 2010 gency Management 3. Develop and implement watershed studies and implement $5,000 Annually watershed plans. Page 190 4 Hennepin ranty Mmummen Plan Mitigation Strategies Page 191 North 'Suburban Emergency Planning Group City Project (In Priority Order) Cost Timeline Responsible Agency Maple Grove 1. Continue to use Maple Grove and Hennepin County GIS Staff Time 2011 Maple Grove Fire to map and update locations of fixed facilities using hazard- ous materials and associated transportation routes in a timely manner. 2. Ensure that all essential city departments (police, fire, Staff Time Ongoing Maple Grove Fire public works) have the latest edition of the Emergency Re- sponse Guidebook. 3. Assess, augment, upgrade the city outdoor warning sys- $25,000 2012 Maple Grove Fire tem to achieve >98% coverage of the city geography with outdoor sirens. 4. All siren activation radios converted to narrow band capa- $25,000 2012 Maple Grove Fire & ble radios by first quarter 2012. Emergency Prepared- ness Medicine Lake 1. The City of Medicine Lake will encourage public aware- Staff Time Ongoing Medicine Lake Fire ness through: promoting NOAA Weather Radios, improving awareness of risks, encouraging purchases of smoke detec- tors, and increase awareness of household hazardous materi- als. 2. Medicine Lake will improve property damage by: repair- Staff Time Ongoing Medicine Lake Fire ing structurally weak homes, trimming trees around utility poles to reduce outages, designate debris removal site. Osseo 1. Continue to educate the public using several safety pro- Staff Time Ongoing Osseo Police grams. Plymouth 1. Assess and upgrade the city/county warning system as $22,000 Ongoing Plymouth Police necessary. 2. Ensure that all essential first responder agencies have the $300 Ongoing Plymouth Police latest edition of the Emergency Response Guidebook. Robbinsdale 1. Update and publicize city evacuation plans. Staff Time Ongoing Robbinsdale Police 2. Promote safe rooms in schools and community facilities. Staff Time Ongoing Robbinsdale Police 3. Continue to enforce snow removal policies and ordi- Staff Time Ongoing Robbinsdale Public nances Works St. Anthony 1. Install a warning siren to cover new park on the north end $25,000 5 Years St. Anthony Fire of St. Anthony. 2. Backup/store city files and records in alternate location Staff time 5 Years St. Anthony Fire 3. Replace undersized storm water pipes (ongoing with Staff Time 5 Years St. Anthony Public street construction) Works Page 191 Hennepin County MMgation Plan Mitigation Strate eyes North Suburban Emergency Planning Group City Project (In Priority Order) Cost Time Line Responsible Agency Rogers 1. Install three (3) outdoor warning sirens $85,000 2 years Rogers Fire 2. Develop a CERT Program $10,000 1 Year Rogers Fire 3. Establish a recreational area storm shelter $200,000 4 Years Rogers Fire 4. Bury three (3) phase power lines along Hillplace Drive $400,000 5 Years Rogers Public Works Crystal 1. Participate in the National Flood Insurance Program. Staff Time Ongoing Com. Development 2. Create a severe weather awareness campaign for citizens Staff Time Ongoing Crystal Emergency that covers siren information, NOAA Weather Radios, how Preparedness the National Weather Service issues warnings and the haz- ards that affect Hennepin County. 3. Ensure building code compliance inspections are con- Staff Time Ongoing Com. Development ducted on new construction projects. New Hope 1. Continue to use the Surface Water Management Plan ap- Staff Time Ongoing Com. Development proved by both the Bassett Creek and Shingle Creek Water Management Commissions. Com. Development 2. Update and enforce zoning ordinances Staff Time Ongoing Com. Development 3. Limit recreational fires and prohibit open burning Staff Time Ongoing New Hope Fire 4. Continue to trim boulevard trees NH Public Works 5. Require developers/builders to provide retention ponds as Staff Time Ongoing Com. Development part of their stormwater management plan. 6. Upgrade existing retention ponds as needed $530,000 Ongoing Com. Development 7. Require and inspect to confirm that all sump pump dis- Staff Time Ongoing NH Public Works charges groundwater to daylight. 8. Require developers to provide areas for snow storage. Staff Time Ongoing Com. Development 9. Bury overhead power lines whenever possible. Staff Time Ongoing NH Public Works 10. Replace and upgrade sewer and stormwater pipes in con- 1.3 M Ongoing NH Public Works junction with street projects. 11. Continue with the established sewer maintenance pro- Staff Time Ongoing NH Public Works grain of jetting pipes. 12. Update local emergency plans as needed. Staff Time Ongoing West Metro Fire 13. Work with neighboring cities on overall plan as to how Staff Time Ongoing West Metro Fire New Hope impacts them and vice versa. H Page 192 Hennepin 090M INNIgation Plan Mitigation Strategies South Hennepin Planning Group City Project (In Priority Order) Cost Time Line Responsible Agency Bloomington 1. Use Urban Area Security Initiative (UASI) dollars to fund $80,000 2 Years Hennepin Emergency the upgrades to the radios and decoder boards on the sirens, Preparedness & Sher - in an effort to not only reach compliance with the new FAA iff's Radio narrow banding standards, but as well as to implement a 4. Update land use plans. new Storm -Based Polygon Warning System. Buildings and zoning 2. Assess and upgrade the city/county warning system as $15,000 Ongoing Bloomington Fire necessary. 3. Increase coordination with the State Duty Officer for highway spills. 4. Work with city, state, and federal agencies and private industries to share information on types and locations of hazardous materials that have the potential to affect the county and region. 5. Ensure that all essential first responder agencies have the latest edition of the Emergency Response Guidebook. 6. Maintain links to other sources of reliable information about infectious diseases and prevention. 7. Continue to partner with local/regional hospitals and clin- ics in developing plans and roles in infectious disease re- sponse, including quarantine. Staff Time Ongoing Staff Time Ongoing Staff Time Ongoing Staff time Ongoing Staff Time Ongoing Bloomington Fire Bloomington Fire & Bloomington Public Health Bloomington Fire Bloomington Public Health Bloomington Public Health Eden Prairie 1. Continue to enforce zoning and permits in the floodplains Staff Time 5 years Buildings and zoning 2. Ensure building code compliance and inspections are con- Staff Time 5 years Buildings and zoning ducted 3. Enforce floodplain management Staff Time 5 years Buildings and zoning 4. Update land use plans. Staff Time 5 years Buildings and zoning 5. Ensure that all first responders agencies have the latest Staff time Ongoing Eden Prairie Fire edition of the Emergency Response Guidebook 6. Initiate dialog with the State Duty Officer on increase Staff Time Ongoing Eden Prairie Fire coordination on spills for highway and rail accidents involv- ing hazardous materials 7. Create a strategy to work with city, state, and federal Staff Time Ongoing Eden Prairie Fire agencies as well as private industries to share information on known types and locations of hazardous material that have the potential to affect the City of Eden Prairie, County and region. 8. partner with local/regional hospitals and clinics in devel- Staff Time Ongoing Eden Prairie Fire oping plans and procedures in infectious disease response, including quarantine contingencies. 9. Page 193 Hennepin Comm M[Humoon Plan Mitijzation Strategies South Hennepin Planning Group City Project (In Priority Order) I Cost Tine Line Responsible Agency Eden Prairie 9. Work with the Minnesota Department of Public Health on Staff Time Ongoing Eden Prairie Fire dispensing of the Strategic National Stockpile. 10. Promote the use of NOAA Weather Radios Staff Time Ongoing Eden Prairie Fire 11. Develop an awareness campaign for citizens on: How Staff Time Ongoing Eden Prairie Fire the National Weather Service issues warning and hazards that affected Hennepin County, and siren information as well as NOAA Radios and their use. Edina 1. Develop/update/publicize city evacuation plans Staff Time 2012 Edina Police 2. Review/update local emergency operations plan Staff Time 2011 Edina Police 3. Maintain/update hazardous materials emergency plan Staff Time 2011 Edina Police 4. Maintain/update plan to contact utility companies Staff Time 2013 Edina Police Richfield 1. Assess and upgrade the city/county warning system as $40,00- 1 Year necessary which includes: purchasing CODE RED alerting $50,000 system, determining the replacement schedule for outdoor warning sirens, placing weather radios in public buildings, and moving towards making Richfield StormReady certi- fied. 2. Develop an education program that provides useful and Grant factual information to the public about infectious disease Funding vaccinations. This will include: Contracts in place with Bloomington Public Health to provide educational material along with vaccination clinics, training for employees in public buildings on infectious diseases along with preven- tion and containment of spreading the disease, developing press releases on "ECHO" to reach the immigrant commu- nity, and compiling statistic data on who has received vacci- nations to determine what areas need to be reached in the future. Richfield Department of Public Safety Ongoing Richfield Department of Public Safety & Bloomington Public Health 3. Work with city, state, and federal agencies and private Grant 2-4 Years industries to share information on types and locations of Funding hazardous materials that have the potential to affect the county and region. This will include: Have provided up to date mapping concerning location and type of hazards mate- rial listed, further training with public safety personnel on hazardous material containment and notification procedures. Another component would be to test jurisdiction response to a chemical spill at a large complex by having a full scale exercise involving Hennepin County's WMD team, 55th Civil Support Unit, and Richfield Fire Department. City of Richfield, Hen- nepin County, and the Federal Govemment Page 194 Hennepin County Mld®adon Plan Mitiyation Strategies Page 195 South Hennepin Planning Group City Project (In Priority Order) Cost Tine Line Responsible Agency Hopkins 1. Develop a public awareness campaign for citizens on how Staff time Ongoing Hopkins Fire the National Weather Service issues warnings and the haz- ards that affect Hennepin County. Also to include informa- tion on siren activation as well as the importance of NOAA Weather Radios. 2. Prevention: Continue to enforce zoning and permit regu- Staff Time Ongoing Planning lations in the floodplains. 3. Property Protection: Enforce floodplain management Staff Time Ongoing Planning rules and guidelines requiring new structures be elevated above Base Floodplain Elevation. Minnetonka 1. Continue to participate in the National Flood Insurance Staff Time Ongoing Minnetonka Fire Program (NFIP) 2. Ensure that all essential first responders have the latest Staff Time Ongoing Minnetonka Fire edition of the Emergency Response Guidebook 3. Continue to maintain it's National Weather Service Staff Time Ongoing Minnetonka Fire StonnReady certification. int Louis Park 1. Use Urban Area Security (UASI) dollars to fund the up- $15,000 2012 Hennepin County EP & grades to the radios and decoder boards on the sirens, in and Hennepin County Sher - effort to not only reach compliance with the new FAA nar- iff's Office row banding standards, but as well as to implement a new Storm -Based Polygon warning System. 2. Encourage new power lines to be buried to reduce power Staff Time Ongoing St. Louis Park Fire outages. 3. Promote the use of weather radios and when possible, Staff Time Ongoing St. Louis Park Fire purchase additional radios for the city. 4. Continue to use county and city GIS to map and update Staff Time Ongoing St. Louis Park Fire locations of fixed facilities using hazardous materials/waste and associated transportation routes in a timely manner 5. Update land use plans to identify areas where develop- Staff Time Ongoing Com. Development ment should be restrictive. 6. Utilize state, federal and local resources to prevent and Staff Time Ongoing St. Louis Park Fire control infectious diseases in the City. 7. Ensure that all first responder agencies have the latest Staff Time Ongoing St. Louis Park Fire edition of the Emergency Response Guidebook. 8. Ensure building code compliance inspections are con- Staff Time Ongoing Com. Development ducted on new construction projects. 9. Continue to enforce zoning and permit regulations in the Staff Time Ongoing Com. Development floodplains. 10. Continue to comply with drainage and erosion control Staff Time Ongoing Com. Development plans. 11. struction, improvements, alterations, and Staff Time Ongoing Com. Development �onitorcon devopment m the floodplains. Page 195 Nennepin County N igation Plan Mitigation Strategies South Hennepin Planning Group City Project (In Priority Order) I Cost Tine Line Responsible Agency St. Louis Park 12. Continue to use existing state dam safety programs Staff time Ongoing Minnesota DNR (Minnesota Dam Safety Program) that maintain and oversee the structural integrity of dams. 13. Continue to work with watershed management commis- Staff Time Ongoing Com. Development sions on all proposed projects impacting floodplain areas. 14. Continue to enforce stormwater management ordinances Staff Time Ongoing Com. Development that address land disturbing activity. 15. Encourage county/city participation in FEMA's Com- Staff Time Ongoing Com. Development munity Rating System Program 16. Increase coordination with State Duty Officer for high- Staff Time Ongoing St. Louis Park Fire way spills. 17. Continue to work with Public Affairs to disseminate Staff Time Ongoing St. Louis Park Fire information about infectious diseases. 18. Maintain links to other sources of reliable information Staff Time Ongoing St. Louis Park Fire about infectious diseases and prevention. 19. Continue to partner with local/regional hospitals and Staff Time Ongoing St. Louis Park Fire clinics in developing plans and roles in infectious disease response, including quarantine. city Minneapolis Planning Group Project (In Priority Order) Minneapolis 1. Use UASI funds dollars and other sources to fund the upgrades to the radios and decoder boards on the sirens in an effort to not only reach compliance with the new FAA nar- row banding standards, but as well as to implement a new Storm -Based Polygon Warning System. 2. Encourage new power lines to be buried to reduce power outages. 3. Continue to use GIS to map and update locations of fixed facilities using hazardous materials/waste and associated transportation routes in a timely manner Cost I Tine Line $50,000 2012 Varies Ongoing Staff Time Ongoing Responsible Agency Hennepin County Sher- iff's Radio Electric Companies GIS Department Page 196 • Nennegin County NW91 ion Pian Plan Maintenance )-SECTION 6 • Hennepin County PLAN MAINTENANCE 0 mitigation Plan Plan Maintenance 6.1 Plan Maintenance 0 The Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan should be considered a living document. The plan will be reviewed every five years as required by FEMA. Periodic revisions and updates of the Hennepin County Multi -Jurisdictional All -Hazards Mitigation Plan are required to ensure that the goals of the Plan are kept current, taking into account potential changes in hazard vulnerability and mitigation priorities. In addition, revisions may be neces- sary to ensure that the Plan is in full compliance with applicable federal and state regulations. 6.1.1 Monitoring, Evaluating, and Updating the Plan Hennepin County will continue to use their Hennepin County Mitigation Planning Team (HCMPT) to review the plan progress on an annual basis as part of its mitigation activities. This workgroup will continue to be coordi- nated by Hennepin County Emergency Preparedness and include all important stakeholders. Each participating agency is expected to C maintain representation on the committee which shall fulfill the monitoring, evaluation and updating responsibilities set by the Fed- eral Emergency Management Agency (FEMA). 6.1.2 Plan Monitoring During each year, the Planning Team will meet to discuss the mitigation projects and any up- dates to the plan. Contacting the departments, agencies, or organizations involved in imple- menting mitigation projects or activities, or conducting meetings with persons responsible for initiating and/or overseeing the mitigation projects to obtain progress information will be the responsibility of Hennepin County Emergency Preparedness. Hennepin County Emergency Preparedness may use the progress reporting forms, Worksheets #1 and #3 in the FEMA 386-4 guidance document, to facilitate collection of progress data and information on specific mitiga- tion actions. Funding will drive most projects, therefore, low or no -cost recommen- dations have the greatest likelihood of succeeding. An example would be pursuing the goal of achieving "Storm Ready Certification" by the National Weather Service (NWS). These efforts would lead to long- standing changes in vulnerability and can be initiated at very little cost, while promoting public education throughout the county. 6.1.3 Plan Evaluation During the annual Planning Team meeting, the Plan will be evaluated to determine the effec- tiveness of programs and to reflect changes in land development or programs that may affect mitigation priorities. The Planning Team will also review the goals and action items to deter- mine their relevance to changing situations in -the County, as well as changes in state or Federal regulations and policy. The Risk Assessment portion of the plan will also be reviewed to deter- mine if this information should be updated or modified, given any new available data (new dis- Page 197 Mitigation Plan Plan Maintenance • asters or incidents throughout Hennepin County). Any updates or changes necessary will be collected by Hennepin County Emergency Preparedness for inclusion to the Plan. • • 6.1.4 Plan Updates Hennepin County Emergency Preparedness is the responsible agency for updates to the Plan. All Mitigation Planning Team participants will be responsible to provide Hennepin County with jurisdictional updates to the Plan when/if necessary as described above. Every five years the updated plan will be submitted to the Minnesota Department of Homeland Security and Emer- gency Management (HSEM) and the Federal Emergency Management Agency (FEMA) for re- view. 6.1.5 Implementation Through Existing Programs Another important implementation mechanism that is highly effective but low-cost is taking steps to incorporate the recommendations, and equally important, the underlying principles of this Multi -Jurisdictional All -Hazards Mitigation Plan into other community plans such as Com- prehensive City Plans. Mitigation is most successful when it is incorporated within the day-to-day functions and priorities of government and development. This integration is accomplished by a constant, pervasive and energetic effort to network and to identify and highlight the multi -objective, "win-win" benefits to each program and the community. This effort is achieved through monitoring agendas, attending meetings, and promoting a safe, sustainable community. It is the intent of Hennepin County Emergency Preparedness and the Hennepin County Mitigation Planning Team to incorporate mitigation planning as an integral component of daily government operations. Both Hennepin County Emergency Preparedness and members of the Planning Team to work with local government officials to integrate the newly adopted hazard mitigation goals and actions into the general operations of government organi- zations. Although it is recognized that there are many possible benefits to integrating components of this Plan into other local planning mechanisms, the development and maintenance of this stand- alone Multi -Jurisdictional All -Hazards Mitigation Plan is deemed by Hennepin County Emer- gency Preparedness to be the most effective and appropriate method to ensure implementation of local hazard mitigation actions at this time. Listed on three is a matrix of possible existing plans where mitigation could be incorporated into. Page 198 Mitigation Plan Plan Maintenance 6.1.6 Continued Public Involvement Hennepin County is dedicated to involving the public directly in review and updates of the Plan. The Hennepin County Mitigation Planning Team will be responsible for monitoring, evaluating, and updating the Plan as described earlier in this section. During all phases of plan maintenance the public will have the opportunity to provide feedback via the Hennepin County website. A press release requesting public comments will also be issued directing people to the website where the public can review proposed updated versions of the Plan. This will provide the public and outlet for which they can express their concerns, opinions, or ideas about any updates/changes that are proposed to the Plan. Page 199 I,YrrW� E Process Action Implementation of Plan Administrative Departmental Work Plans/ :D Radiological Emergency Preparedness (REP) Procedures/Policies Program Plan �D Planning :) Business and Economic Development :D Building/Engineering :D Hennepin County Transportation Systems Plan :D Solid Waste Management Master Plan :D Continuity of Operations Plan Administrative Municipality Plans Z Include reference to this plan in risk manage- ment plans section of Planning Group Emer- gency Plans. �D Include references in creation of ordinances/ resolutions or public education campaigns. Z Include reference in watershed district plans. Include reference in County storm water man- agement plan. Three -Rivers Park District Regional Parks Pol- icy Plan 2030 Regional Parks Capital Improvement Pro- gram �D Municipal Debris Management Plans :Z Met Council's 2030 Regional Development Framework Regulatory Ordinances and other �Z Comprehensive planning - institutionalize haz- directives ards mitigation techniques for new home con- struction (Windstorm Mitigation Manual) �D Zoning and Ordinances Z Building Codes - enforcement of codes or higher standard in hazard areas. :D National Flood Insurance Program - Continue to participate in this program and increase par- ticipation throughout the county in the Commu- nity Rating System Program. Continue to implement storm water manage- ment plans. �D Municipality shoreline ordinances 6.1.6 Continued Public Involvement Hennepin County is dedicated to involving the public directly in review and updates of the Plan. The Hennepin County Mitigation Planning Team will be responsible for monitoring, evaluating, and updating the Plan as described earlier in this section. During all phases of plan maintenance the public will have the opportunity to provide feedback via the Hennepin County website. A press release requesting public comments will also be issued directing people to the website where the public can review proposed updated versions of the Plan. This will provide the public and outlet for which they can express their concerns, opinions, or ideas about any updates/changes that are proposed to the Plan. Page 199 I,YrrW� E Mltl atioul Plan Plan Maintenance • A copy of the plan will be publicized and available for review on Hennepin County Emergency management's website homepage. In addition, copies of the plan will be catalogued and kept at all of the appropriate agencies in the county. The plan will also be kept on file at all Henne- pin County libraries for easy access to the public. 0 • Page 200 NOUROPIn County mmoatlon Plan Plan Review Crosswalk J. 1�'-' SECTION 7 Hennepin County PLAN REVIEW CROSSWALK 0 •0 U c 0 cn N 0 UV N CIo g _ m Z 2 N a � O d E 0 C � Z Q ❑ � C c N L' X C C R o C > M a 1 a 1 LO ❑ L N C Z N += O 1- U �0 m C .Fu .2 U o aD c y O O O 0- CL a CLCL N C � _ m CL CLN C a = = Q C Q Q O N C cu Z > o M C � U O a U N 7 d •D ami cLv LU > n � o 0 _ c� N 2 m > m aL O co q-, LO CLU C Q U 'C N c � w 3 = o 0U O c �.+ a _U) C = C CL c = O U L -o L -+p ° <QO a0 c OO � j o � m o }, .20.5 p Z 1 N d p u 5 __ d rn _U? � O m :t! 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U o c a) Ja N (n W v) CO Ca 0-0 ami` E Ot o U N a Q N O a i C a) � � m c m— c C- m .C: a) fa aCU Q. 7 0 CII 0.— C/) (n 3 cu C = c G1 h Q) O 0 U w, v O c U) 'o m aL E O i ) m ❑ .� CD H Y. 0 • •O U X C Lo d co 2 a) Y QJ N cn LL W w z J 0- z z O H 0 ff 1 0 �C Z NI a c o U i t Q) c U O uj C, U C Cl) c � � c cu ami .� � U c O a� � c c m co a a •Z � j O iu—Cc c > Q) c � O CL— cu ,O U N .Ol N N O Q) �0CU ON _ U Co O aha oma' O � O, N m m Q � 'Q � a3 T Q) > a)-- Z3 -z O o p �c Qa�.�m 7,3 Q cu O N p CU to. -c — X (a) ,- o Q) o O c Q) Q) > Z3'L ��E-Qo c i •V O 4� M O (3) Q) O O O O yr � a c C5— Q) 'cc a) W n X w O U U) z N i 70 c -0 -�e 0)c O c (1)cn . ca _0 N J- L (a 7 O cn = "D — O Q c c °o o EQ Q O - 0 0- >' O :3 t- Q>,U N._ O 0) =N Qn �� 4-- O O a) N -r- C O U v � 0) c C C O L O O N E U) U OU = N (6 m " CQ O Ou)�i O U cu t4 E Y L 0- N N 0) o (�Q Q7 .0 C Na) U Q > C cn = L 3 O C C a) (B 'a a) Q" a) cn -c cn a) N O cn cn�d .c c O O )/0 N CO LU � N o N (V C Co C C O CLN O 'v CU x U) O c N M J a m cn (n a X c 2;l �. Ea) �o.q)m 0 D1Q�•C M O C p N m mmq) C: Q O 0)_ > O N O C C C m U ~ C (D O MC a) 'Q Q p �� a) O)4�-- i N C a) Em = �CN •>LU —Cu :� Q) C �>+. 76 • U O O N `- C a)5oa) C Lf) Q (D M U) o o ° c O (D a) a y O E 2 O -0 c <n o L11•L m :3c 2 U) c C OU OU o = LLI 10 cl. � m a) U O C C O > _ a) E O •� o C O LL m U) O O Q ivy aS U �. o m Q) N O U CO •'U-� m o o V N to Q 7070 a) Q c O co QQ > _ rn(U j Ea t_ N C c Q s -a m O a) 2` 0 Ca Q a) a) U '] dCL N L) Q 0 O U C•C 0) C D OL a) O N C O N •Q t i 7 'p X O' � � U(B 00 E <n '� to ca 3 o c� C co O Q z- 0E C W i ._ V -0 `� L a) U a) M b� a)OoW a) Q _r_ (6 'O M .L. '> a) Op 0 O cn C C o=� Q T 0 O U O �j0 E� C U U m E (0 a) .N .N L O N U C J- L �-- .O O C Lo d co 2 a) Y QJ N cn LL W w z J 0- z z O H 0 ff 1 0 �C Z NI a c o U i t Q) c U O uj C, U C Cl) c � � c cu ami .� � U c O a� � c c m co a a •Z � j O iu—Cc c > Q) c � O CL— cu ,O U N .Ol N N O Q) �0CU ON _ U Co O aha oma' O � O, N m m Q � 'Q � a3 T Q) > a)-- Z3 -z O o p �c Qa�.�m 7,3 Q cu O N p CU to. -c — X (a) ,- o Q) o O c Q) Q) > Z3'L ��E-Qo c i •V O 4� M O (3) Q) O O O O yr � a c C5— Q) 'cc a) W n X w O U U) z N i 70 c -0 -�e 0)c O c (1)cn . ca _0 N J- L (a 7 O cn = "D — O Q c c °o o EQ Q O - 0 0- >' O :3 t- Q>,U N._ O 0) =N Qn �� 4-- O O a) N -r- C O U v � 0) c C C O L O O N E U) U OU = N (6 m " CQ O Ou)�i O U cu t4 E Y L 0- N N 0) o (�Q Q7 .0 C Na) U Q > C cn = L 3 O C C a) (B 'a a) Q" a) cn -c cn a) N O cn cn�d .c c O O )/0 N CO LU � N o N (V C Co C C O CLN O 'v CU x U) O c N M J a m cn (n a X c 2;l �. Ea) �o.q)m 0 D1Q�•C M O C p N m mmq) C: Q O 0)_ > O N O C C C m U ~ C (D O MC a) 'Q Q p �� a) O)4�-- i N C a) Em = �CN •>LU —Cu :� Q) C �>+. 76 • U O O N `- C a)5oa) C Lf) Q (D M U) o o ° c O (D a) a y O E 2 O -0 c <n o L11•L m :3c 2 U) c C OU OU o = LLI 10 cl. a) U > _ a) E o C O LL m U) O O Q ivy aS U �. Q) N O U CO •'U-� N O V N to Q d Q c O co > _ rn(U j Ea t_ yns c Q s -a m O a) 0 C Q dCL N L) Q O -'j -O N 'C �4) 7 L Op i 7 'p X O' no 00 E 3 3 o c� ;d Q p C W i ._ a) U a) w U) r to U a) Q _r_ (6 'O M .L. '> a) Op 0 a) O O> X a) C O 00 EC) aa)) 3 0- w Q w w a) � w x x � o � L >+ 4-- C 7 U � OO N Y ., a) C o � C C D 0) � w o m > c6 Ua U y (c6 -0 z m so_N .0 (6 ZT �v O L cn v; o o U)c U) (n Q O � 3 t — — Su^fi`` Q Cts N (U I..l. _C 0-0)-- U O a) a E m m 0- N �� Q.�� Q_0 aa)) CL �� o_C W C W O ° o m (o'c co O a C N O C °Q a) Q) c Co 0- C Q O Q) U C a) = o U � QQ M M Co y C 6 co ��0 CLC U O C �•0�C a) m �C a �cu� N Z3 a) U -o � N. C (6 ` cu ' (� a) Q. M >' O) L rl cn W C C 7 a) a Y) Q) a aO. _N a) C >, �` :Ln O L M o U) Sa) ° o) U N .Q y D D rR V>J (� (n ° AL♦ 0 U �� m C!1 O N O N O '� C ° U O O E �' U -a O (� W L• O � (n L p) (B L L C '� OL /�yam/ /�/� Y " 0 O LL O � � O O C U >, ca C � C (n 0 C L c) h Q ) O O O U (p .p) Co•.�. w o N O O G3 U �UL� Q) a.9 O (6 N a) _ _ V J- C I-2 L o 0-a .c N - O L N �- CLm E O N + Lj Li O o moa m Q) o _ oa Q) 0)oa UCUMaa) 0- ca U w N (n a) + C Co N p N O C Q) ai ZZ w U SE � za W a c o o� ° o Z _ C p �= a) .� Q a a Ucz O Q O Oa5 i co aa.. a �Q� Q rte+ ZZ; O (a) O O a V -S -)'O 4 p >-, — Q O N N.0 � Z3 3 (1) N c c o o Q) ca S G a) E Q Q (� J Q moo�•� O a Q Q C U U Q ❑ 4 a) Q �� o �a, o-)_ w a) x x x x x .7 E C L >+ 4-- C 7 U N c �O U ,° � co: a E C OO N Y ., a) C O ca (DT- D O y = +_ E C C D 0) U O a) a) m > c6 Ua U U U m so_N .0 (6 ZT �v O L cn v; o o U)c U) (n Q cn C7 U C(�c�u ° c� > •> U O -0 — — Su^fi`` C ° to >> Cc: a) O') 0') c O Q Z ° O C C L a .7 E C L >+ 4-- C 7 U N c �O U ,° � co: a E C OO N Y ., a) C ° •1 O ca (DT- D O y = +_ E C C D 0) U O a) a) m > c6 Ua �Qc U U m so_N .0 (6 ZT �v O L cn v; o o U)c U) (n Q cn C7 U C(�c�u ° c� > •> U O -0 — — Su^fi`` C (U I..l. _C 0-0)-- U O a) a E m (W.i C -0 M ° �� Q.�� Q_0 aa)) CL �� o_C W C W O ° o U L— y r'—m O) O O a C N O C °Q a) �- �a� > y l Z3 -0 C Q O U U C a) = o U � QQ M M Co y C 6 W> o70 N (n ��0 CLC U O C �•0�C a) m �C a �cu� N Z3 a) U -o � N. C (6 ` a (� a) Q. M >' O) L rl cn W C C 7 a) (n O U ° c < aO. _N a) C >, �` :Ln O L D- m_ O : U) Sa) ° o) U N .Q y D D rR V>J (� (n ° AL♦ 0 U �� m C!1 O N O N O '� C ° U O O E �' U -a U C (� W L• O � (n L p) (B L L C '� OL /�yam/ /�/� Y " 0 O LL L • U O a) >, C >, ca C � C (n 0 C L LL Cn C LC ) (n O O O M Q) w o N O O S C m� U �UL� O O a.9 O (6 N a) (SII >O O Z0> U=UQ O V J- C I-2 L o L �— m L N �—� � L N �- CLm E O W w O U Cl) a 00 Q 3 co 0 0 N i' J X, N O') 0') N N C -0 7 C aim a C C C a) °- OO N Y N O m N C U M O a) (4 C U O a) M c- C U O a) C O,- USM U (n a) U U m so_N .0 (6 ZT �v O L cn v; o o (n CO a U) (n Q (n (n CO co M W w O U Cl) a 00 Q 3 co 0 0 N i' J X, U y C -0 7 C aim N ) a) N a a) C •C to ma (n °)a) CZ�'R w0a) Q- C.cr• , -d) N =oa 3:o OCU a) a) yc)a)�>C m N m so_N .0 (6 ZT �v O L cn v; o o 0- 3 0 4) a) E (6 0 a) ._ '6 ZA O O a) VL L) L •> "O N cm C a) '� o .Q._(.. c03 (6 U m R p cB U w -- ° .a O Q�•S a Q 7 aUoa sT C O `° a) 0mU O N y C"a � a) 'a N y ._ OC - U a) - —O O C a R N C'. C L M C Q N d O C Q. L T A U C) -.E- OL 0 (6 fd C U N i2. m Cd y m O� a N a C �E () a) > aQ0 0) a c a 0 a L 0 o --o o C m >.-- 0 Ray a �� o Q o o m C QQL�; c c o C >,u�� Qoa d 3� a, w d a)a) M Co� . ��° y -t . 0 yL== rn U COO _ O O ON COa) y C) 3:Q ❑ O .Q cis ❑ .S� N ❑ a) s? O 6 Lj Li W w O U Cl) a 00 Q 3 co 0 0 N i' J X, LU U) X X w -amm O c co "O co -0 Nc U C Z L O .� .L ()U c Q) rz co h Q) M Y a) F, N N O O C = Q) a as 4) ui lz a) O UO] Q cooc.,j C Y 5 X O M 0 C: -i E—L (z i O CL 'L Q) CD U ate-+ a (B C N c -a � N Q R -a L � t6 L O. cc � c L O cc 3 0 W v) r. = Q) C a) 0-0 U A�� W Y O w Q LU w O U Q D N rn w cn X X X w O U Cl) Z O U Q) V)C N C a) m Q co a) Y o a) =(D0 cmc 0) -0 a o.� N O o O C U) ti c C M Q M . A L M= cO M Q) L m 0 70 }'Q. rn a Q) m fB U) E O) Q) Q) a) O U) ca Ncu co UO E O> N U (1S LC) N C ca E p Q (� a) O O N E a) M 0 M Uj M " C O _ a) Co C 0 N C c0 � O N >, O (n a) Q) � � O � � CL C: C Qin 0 O O cv rn O _� cYn N c: -Eo u O N O .0 U L C ' O) L- 00 (6 O _ (6 -0 N - V) U) 3 O) C m C Q Q) C (6 C .0 E N r fB L O m -O (6 +' U) (a C a) a) a) r O Q) C N O pL �� 4? a � LnCO (D Co a Q y N M� L Q� � p 'N LO 0) a) O �� EU,=�EE3�U)E��co,n� o c E cn c)� � E 0 L0°�°i` O O >' m co o L N a) oo . co Q r caa U �„_,- a) U � �rnc. UO O N C O M .- p) a) C C 4- Q. CO co L m U) c U C O E 'a Q CO Ci O C p 7 U) m C Q 3 .N 0-0 E co C O U N r- �> >a)�cENEONOotia)rnrn oQ) d LO 0-2 0 F- .E f� (D > m O-) a — 0IV O N o N O ate+ 0 f6 Q Q Q a QQ)) c •° aS cl rS U C c O co C M C M C co vOi X O O O ca = a) a) ti m ti 0 J a m CO .T W 'T O y ' Y ON ++N 3w Q) O = N O 02 R aa) -0 N O C y c0 i 6 L Q Q) i O w c 0- -Cc Cl)) C 'C N O G� Q) �r� o� _ o t N c4 c c6 70 O N N R N O O N o c.. (n.2�, E (D U) N 'C fl_ L U C7 N c � ca = (n > a 0 a) 4) R N Q N Ny m N Q0C CC7 Odarnto .O7 ,3 a) r- cz 0Q -raLSd @ n O a NEc O D (DU a� E o ornom co o e M ca .� w Q m U 'I L C E 0 -amm a) iii - O c co "O co -0 Nc C U) C N Q O m E O L O .� .L ()U cn v 76 C E•� C N Q) L U) :3 U 0 X—•-� -r- rn� aE m C U .N O O - — to Q) L C O f6 O a) O N (�6 C O C in -t d (Q p N O E N m o E c O ,_ co a) ca L: U O�ca N QOM U Q) cu 0 ca ' O p o -LO 0 d L O a) O UO] Q cooc.,j C Y 5 X O M 0 C: -i E—L (z i O CL 'L Q) CD U ate-+ a (B C N c -a � N Q R -a L � t6 L O. cc � c L O cc 3 0 W v) r. = Q) C a) 0-0 U A�� W Y O w Q LU w O U Q D N rn w cn X X X w O U Cl) Z O U Q) V)C N C a) m Q co a) Y o a) =(D0 cmc 0) -0 a o.� N O o O C U) ti c C M Q M . A L M= cO M Q) L m 0 70 }'Q. rn a Q) m fB U) E O) Q) Q) a) O U) ca Ncu co UO E O> N U (1S LC) N C ca E p Q (� a) O O N E a) M 0 M Uj M " C O _ a) Co C 0 N C c0 � O N >, O (n a) Q) � � O � � CL C: C Qin 0 O O cv rn O _� cYn N c: -Eo u O N O .0 U L C ' O) L- 00 (6 O _ (6 -0 N - V) U) 3 O) C m C Q Q) C (6 C .0 E N r fB L O m -O (6 +' U) (a C a) a) a) r O Q) C N O pL �� 4? a � LnCO (D Co a Q y N M� L Q� � p 'N LO 0) a) O �� EU,=�EE3�U)E��co,n� o c E cn c)� � E 0 L0°�°i` O O >' m co o L N a) oo . co Q r caa U �„_,- a) U � �rnc. UO O N C O M .- p) a) C C 4- Q. CO co L m U) c U C O E 'a Q CO Ci O C p 7 U) m C Q 3 .N 0-0 E co C O U N r- �> >a)�cENEONOotia)rnrn oQ) d LO 0-2 0 F- .E f� (D > m O-) a — 0IV O N o N O ate+ 0 f6 Q Q Q a QQ)) c •° aS cl rS U C c O co C M C M C co vOi X O O O ca = a) a) ti m ti 0 J a m CO .T W 'T O y ' Y ON ++N 3w Q) O = N O 02 R aa) -0 N O C y c0 i 6 L Q Q) i O w c 0- -Cc Cl)) C 'C N O G� Q) �r� o� _ o t N c4 c c6 70 O N N R N O O N o c.. (n.2�, E (D U) N 'C fl_ L U C7 N c � ca = (n > a 0 a) 4) R N Q N Ny m N Q0C CC7 Odarnto .O7 ,3 a) r- cz 0Q -raLSd @ n O a NEc O D (DU a� E o ornom co o e M ca .� w Q m U 'I X IX w Cl) X O cn 0 X w N fB -r O Ef. m U c 0 L O L 0 N0 c_ W N cin c o3 O O O O 0 v - C N OQ c0 ca m0 cn -C N vi O vi 0 O 0 Q0 -a > — U) W C O w N 70 m to a o U 0 0 .N (n U i C N O 0 L O L C: m� Q O E O E (B C L tf O L >i N 0 0- 0 O 0� O 0 OCoQ : O Co 0-0 fB -0 U 4- N E 0 O C(n " cn O U L Un cu O Cy to I 0 L " C _ X 0 > N.= M 70 >= Y 0 C _ O� N LQ (L6 C (0 0 i cn O O_N-0 QO E O _ L (6 L C Q- 0 Q U) 0 0 -C > fn > I- 0 C co N N L 0 C 0 E a C <LO ON CO OU ,L�� 0 (n f0 v+R E Z E E U O +� 0 O U U c L >, C �_ O U) U 0- L- .,_.U 0 to O N Q N y O- d � C O C L C cY) Q G1 0 Q E C _ O M 0-0-0- 0 U 1 U J .z @ (n U U�' a ALO C (� N > N N cB _ v a O O C Y Q C U Q V � 2 W UcriO I;Ja R C 0 0 N i)Cl) cM W t o N � Z C/) W `=_ c y � LL Q (Q Z 0 Q O O J aZ� a �co (B ZQ Q 0 > r- O L L c6 Q 3 �0 0 C O 7 H _Co Q O G r u J > "_ c a 0 �.Q 41 N L o w Cl) X X X w M O U 4- 0 N C O C cn O Z ca m0 r.9 Mo O W w O U U) Q' a ,D,^ v/ ., 00 .0 0 y C M C O Q X V f0 C J a G 0 E W O r Q LL O co O O N 10-Ij .j i M 4- 0 •C C O C cn O ca m0 cn 70 C M U U) W C O w N 70 m to a o U 0 0 .N (n co C: m� y N rn Y N ai 0 4� 0� O 0-0 fB -0 ° U L Un cu N C: _ .0 4 (L6 C (0 0 E E O " N C N U) 0 0 -C :3 C <LO CO d E ,L�� Q°� Q0 O O E O O O O +� 0 O U U O U L >, C �_ O U) U 0- L- .,_.U 0 to O N Q N y O- 0 O U L C Q > /Gyp 0 Q E 0 cn O 0 Y._ 0-0-0- 0 �a .z @ U U�' a C N c 0C6.2 C N cB _ v a O O C Y Q C U Q Q)ovx O v0iti UcriO I;Ja R C 0 0 N i)Cl) cM t � Z C/) O y � O L ` (B Q 0 > r- Cl) 0— O c6 3 (0 0 > ` y �.Q 41 N L o <C `m `�Q. 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