1b. Hill Street Drainage Improvements: Award Contract
CITY OF
CHANHASSEN
7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Building Inspections
Phone: 952.227.1180
Fax: 952,227.1190
Engineering
Phone: 952,227.1160
Fax: 952,227,1170
Finance
Phone: 952,227.1140
Fax: 952.227.1110
Park & Recreation
Phone: 952.227,1120
Fax: 952.227.1110
Recreation Center
2310 Coulter Boulevard
Phone: 952,227.1400
Fax: 952.227.1404
Planning &
Natural Resources
Phone: 952,227.1130
Fax: 952.227,1110
Public Works
1591 Park Road
Phone: 952,227.1300
Fax: 952,227.1310
Senior Center
Phone: 952,227,1125
Fax: 952.227,1110
Web Site
www.ci.chanhassen.mn.us
-1-b
MEMORANDUM D
<1-
TO: Paul Oehme, Public Works Director/City Engineer \
FROM:
Terrance Jeffery, Water Resources Coordinator ~
,,~.
DATE:
February 8, 2010
SUBJ:
Hill Street Drainage Improvements: Award of Contract
SWMPI2-2009-02
PROPOSED MOTION
"The City Council approves a construction contract in the amount of $66,582.30 to
Blackstone Contractors, LLC for work to be performed for the Hill Street Drainage
Improvement Project No. SWMPI2-2009-02. "
City Council approval requires a simple majority vote of the City Council present.
BACKGROUND
The City Council authorized the advertisement for bids on November 9,2009. The plans
included a base bid intended to address the known deficiencies in the storm sewer
conveyance system and the channel erosion and sedimentation. Also included was a bid
alternative for the installation of an environmental manhole to provide additional water
quality treatment for the runoff.
This project involves several improvements to the channel and storm sewer conveyance
system between T.H. 101 and Lotus Lake. The following improvements were included in the
base bid:
1. Stabilization of an eroded gully located between the two existing houses.
2. Removal of approximately 100 feet of corrugated metal pipe with known breaches
and conveyance hindrances.
3. Installation of 183 feet of HDPE pipe.
4. Installation of three storm sewer manhole structures including two sump manholes.
5. The reshaping of the swale to Lotus Lake to provide a more laminar flow and to
stabilize the swale.
6. Revegetation of the area including the use of a turf reinforcement mat within the
swale.
7. Construction of a non-weight bearing retaining wall to mask the outfall from T.H.
101. An alternate bid item was included in the bid for construction of a special
design drainage structure - environmental manhole.
The special designed structure would need to be in excess of 16 feet deep with an inside
diameter of 10 feet to treat the water from this drainage area. The structure would still only
g:\eng\swmp projects\swmpI2-2009-02 lotus lk drainage at th 101 outfall- hill street\award construction_02081O.doc
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Paul Oehme
Hill Street Drainage Improvements
February 8, 2010
Page 2
be able to treat only rain events over one inch (1 "). This results in a number of logistical issues with the
installation and maintenance. Because of these issues and the absence of any financial partners, staff is not
recommending that the environmental manhole be included as part of this project.
BIDS
Bids for the project were opened on Thursday, December 17,2009 at 10:00 a.m. Twelve (12) total bids were
submitted. The bids received are as follows:
Blackstone Contractors, $66,582.30 $58,125.00
LLC
Minnesota Dirt Works $70,890.00 $34,193.00
Doboszenski & Sons, Inc. $73,648.34 $44,052.57
Quirin Excavatin , LLC $79,394.75 $50,750.00
Veit & Com an , Inc. $79,731.19 $51,796.00
Peterson Com anies, Inc. $82,572.20 $55,900.00
Kusske Construction Co. $88,186.60 $67,775.00
Min er Construction, Inc. $93,853.49 $59,110.00
Sunblad Construction, Inc. $95,201.20 $69,991.00
Sunram Construction, Inc. $99,695.89 $51,999.91
G.F. Jedlicki, Inc. $104,780.88 $49,514.91
Burschville Construction Inc. $115,781.25 $80,500.00
*The engineer's opinion of the base bid cost was $72,412.75.
Blackstone Contractors, LLC has not worked in the City before. Staff has completed a reference check and
their work in other cities has been found acceptable. Additionally, WSB & Associates has had
communications with others who have worked with Blackstone and also have found their work to be
acceptable.
The project is tentatively scheduled to start the week of February 8, 2010 with a substantial completion date
of March 12,2010. Staff has been in contact with the property owners in the area regarding the project scope
and schedule.
This project was budgeted for 2010 in the CIP Project SWMP-040. Funding for the project is proposed from
the Surface Water Management Fund. The City has sent a request to the Riley-Purgatory-Bluff Creek
Watershed District requesting that they cost share on this project.
Attachment: 1. CIP Page
2. Project Area Maps
3. Letter from WSB & Associates, Inc. dated 1/19/10
c: Gordy Stauff, Construction Manager
Bruce Karvonen, Blackstone Contractors, LLC
Tracy Rust
g:\eng\swmp projects\swmp12-2009-02 hill street drainage improvement\award construction _02081 O.doc
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Capital Improvement Program
City of Chanhassen, MN
Project #
SWMP-040
Project Name TH 101 Inlet Project
Account #1 720-7025-4751
Account #2
2010 thru 2014
Acconnt #3
Account #4
Description I
This project involves stabilizing a channel which directs flow from TH 101 into Lotus Lake.
Department Surface Water Management
Contact Paul Oehme
Type Improvement
Useful Life
Category SWMP
Priority nla
Total Project Cost: $115,000
Justification I
The adjoining property owners are concerned about the erosion on their properties as a result of stormwater discharge through the site. This area is
resulting in sediment deposition into Lotus Lake and a 6 foot plunge pool has formed within the Lake at the terminus of the channel.
Expenditures
Construction
Total
Funding Sources
Other Agency Contribution
Surface Water Utility Fund
Total
2010
115,000
115,000
2011
2012
2010
15,000
100,000
115,000
2011
2012
Budget Impact/Other I
Some turf management may be required the second year after completion of the stabilization.
119
2013
2013
2014
Total
115,000
115,000
2014
Total
15,000
100,000
115,000
Site Location Map
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DRAINAGE IMPROVEMENTS
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t HERE!N' CERTIFY THAT nus PI.AN, SPECIF1CATION, OR REPORT
WAS PREPARED B't' WE OR UNDEJl: JIJ' DIRECT SUPER'v'ISI<)t<I
AND TK4.T I AM It MY UCENSED PROFI:SSIONAL ENGINEER
UNDER 1HE lAWS Of THE STATE Of l.lINNESOTA
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AS NOTED
DESlGHS"I';
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TODD E. HU8MER
OATE:Novl!Imber 9, 2009 uc. NO: 24-043
OlECKID B"I": PROJECT NO:
TI:H 1694-13
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WSB
& ASliociotes, {nt:.
Infrastructure _ Engineering _ Planning _ Construction
701 Xenia Avenue South
Suite 300
Minneapolis, MN 55416
Tel: 763-541-4800
Fax: 763-541-1700
January 19,2010
Honorable Mayor and City Council Members
City of Chanhassen
7700 Market Boulevard
P.O. Box 147
Chanhassen, MN 55317
Re: Hill Street Drainage Improvements
City of Chanhassen Project No. SWMP 12-2009-02
WSB Project No. 1694-13
Dear Mayor and Council Members:
Bids were received for the above-referenced project on Thursday, December 17, 2009, and were
opened and read aloud. A total of twelve bids were received. The bids were checked for
mathematical accuracy and were tabulated. The Engineer's Estimates for the Base Bid and the
Base plus Alternate Bid were $72,412.75 and $134,712.75, respectively. It is our understanding
that the City does not have adequate available funds to award the Base plus Alternate Bid.
Therefore, we recommend that the project be awarded upon the Base Bid only to the low bidder
of Blackstone Contractors, LLC, Corcoran, Minnesota, in the amount of $66,582.30.
We recommend that the City Council consider these bids and award a contract to Blackstone
Contractors, LLC, based on the results of the bids received.
Sincerely,
WSB & Associates, Inc.
~~
Todd E. Hubmer, PE
Project Manager
Enclosures
cc:
Todd Gerhardt, City ofChanhassen
Paul Oehme, City of Chanhassen
Bruce Karvonen, Blackstone Contractors, LLC
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K:\OI694-13\Admin\Construction Admin\L TR RECMMDTN-121709.doc