CR 92-233 Approve Change Order Knollwood Street
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. November 12, 1992 o P K \ ~ Council Report 92-233
APPROVE CHANGE ORDER NO. 3
KNOLLWOOD STREET RECONSTRUCTION
Proposed Action.
Staff recommends adoption of the following motion: Move that
Council authorize Chanqe Order No. 3 as it concerns the Knollwood
street Reconstruction project.
Overview
Council in previous action has approved two other change orders
that have come about mainly because of poor subgrade soils at the
Knollwood site. This report outlines the need for a third and
last order.
Primary Issues to Consider
0 What is the justification for a change order?
Most items under "Additions" relate to extra utility
trench and street subgrade work necessary because of
unsuitable soils. Previous analyses for Change Orders
1 and 2 discussed in detail the soil conditions and the
various special methods and materials to address the
. substandard conditions. The items in this change order
fall into the same category.
The additional item for pond excavation is one that
came about from a resident by way of a private
petition.
0 What are the costs and sources of funding?
The net total change order is an addition of
$55,224.30. The sources of funding are the utility
funds, general revenue funds through PIR, contractual
contingency funds, and assessments.
0 staff recommendation
staff concurs with RLK Associates' assessment and
recommends Council authorization of this change order.
supporting Information
0 Change Order No. 3
0 supporting letter from RLK Associates
.lo.."""G.'? Ge.,:::>~\Q. / ___ ~
. James Gessele
Engineering Superintendent
...
. CHANGE ORDER NO.3
RLK Associates, Ltd.
922 Mainstreet
Hopkins, MN 55343 Date: November 3, 1992
TO: Widmer, Inc. Project No. & Desc.
P.O. Box 219 90-0 1
St. Bonifacius, MN 55375 Knollwood Neighborhood
Contract Date: June to, 1992
CONTRACT FOR: UTILITIES AND ROADWAY
---........-.......-------------------------------------------------------...---....--------------------------
You are hereby directed to make the following changes to the above mentioned contract:
ADDITIONS:
Unit Qu,. Unit Price Total Price
Trench Backfill Sand TON 1,447.35 $ 9.70 $ 14,039.30
Common Excavation C.Y. 1,300.00 5.25 6,825.00
Haul - Back & re-stacking 1.5. 1.00 780.00 780.00
. charges, 6" D.I.P. warermain
Remove brick pillars EACH 11.00 150.00 1,650.00
Select Granular Borrow, Mod.(CV)* C.Y. 1,000.00 8.10 8,100.00
6" Aggregate Base, CL 5 S.Y. 25,000.00 2.55 63,750.00
12" PVC Storm Pipe L.F. 100.00 20,00 2,000.00
Special Pond Excavation c.y. 2,800.00 7.35 20,580,00
Subtotal Additions $ 117,724.30
DEDUCTIONS
6" Aggregate Base, CI. 5 S.y, 25,000.00 2.50 (62,500.00)
Subtotal Deductions $ (62,500.00)
TOTAL CHANGE ORDER $ 55,22430
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e CHANGE ORDER NO.3' (CONTINUED)
CONTRACT STATUS PER THIS CHANGE ORDER ACCEPTANCE
----------------------------------~----------------------------------------------------------------
The time to complete the contract is ENGINEER:
I 'f" I RLK ASS IATES, LTD.
1 I Unchanged
I I
I I Increased by Days /./.:
I I ~~A-~
1 I Decreased by Days By
Date
The date of completion is Now
OWNER:
Original Contract Sum $ 661,435.50 CITY OF HOPKINS
Net Change Order By
By Previous Change Orders $ 114,432.93 Date
Contract Sum
. Prior to this Change Order $ 775,868.43 CONTRACTOR:
I X I By~4?J?~
I I Addition
;..- .
I I Date /1- ~ -q'-z:--
-
I I Deduction
Made by this change order $ 55,224.30
New Contract Sum $ 831,092.73
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[I!~~ 922 Mainstreet
Hopkins, Mn.
55343
(612) 933-0972
fax: (612) 933-1153
November 6, 1992
Mr. Jim Gessele
City of Hopkins
10 10 South First Street
Hopkins, MN 55343
Re: Knollwood Neighborhood Project
Change Order No, 3
Dear Jim:
This letter is to explain the need for the items in Change Order No. 3 submitted to you on
November 3, 1992.
Under "Additions", Trench Backfill Sand was used to replace unsuitable soils taken from utility
trenches for the last of the utility work. Additional Common Excavation was necessary due to
the increase in depth for Class 5 aggregate base, from 6" to 12" in many street segments. The
increase in unit price from $4,75/c.y. to $5.25/c.y. is due to the additional excavation in excess
. of contract quantities which must be hauled off the site.
Haul-back and re-stocking charges are for the 553 feet of 6" watermain which was deleted
under Change Order No.2. Removal of brick pillars was for work in connection with the
Drainage Easement on 122 Wilshire Walk.
Additional Select Granular Borrow Modified, was for backfilling sub cuts as in Change Order
No.2.
The item for 6" Aggregate Base Class 5, was due to an increase in Contract Unit Price from
$2. SOle. y'. to $2.55/c. y. This increase is due to higher placement costs caused by using
Geotextile Fabric under the Class 5. which changes the method of dumping and spreading the
material. The deduction item for 25,000 square yards of Class 5 at $2.50/s.y. will delete the
amount of $62,500 paid in Payment No.4 under the old unit price.
The item for 12" PVC Storm Pipe is for work done on the Drainage Easement on 122 Wjlshire
Walk.
The item for Special Pond Excavation of 2800 c.y. is for work done by request of the City to
improve water quality and increase sediment storage capacity fOf the existing pond at Wilshire
and Valley Way.
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. Civil EngIneering · Transportation · Infrastructure Redevelopment
· Landscape Architecture · Construction Management .
. Mr. Jim Gessele
November 6, 1992
Page 2
If you have any questions about this or future cost matters, please call.
Sincerely,
RLKE?:aJJ
Paul D. Kroehnert, P.E.
PDK:js
cc: Chuck Poppler
Dick Koppy
Fritz Widmer
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