1c-1. 2006 Sanitary Sewer Rehabilitation Proj. No. 06-11: Award Construction Contract for Infiltration/Inflow Project
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
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MEMORANDUM
TO:
Todd Gerhardt, City Manager
Paul Oehme, Dir. of Public Works/City Engineer ,,?,..O.
November 13, 2006 Ol~
FROM:
DATE:
SUBJ:
2006 Sanitary Sewer Rehabilitation Project No. 06-11 & PW254B:
A ward Construction Contract for Infiltration/Inflow (1&1) Project
REQUESTED ACTION
Award Construction Contract for Infiltration/Inflow Project & Approve Agreement
with Metropolitan Council.
BACKGROUND
On August 29, 2006, staff requested and was approved by the MCES for a reduction
in the surcharge amount to $272,380 based on illicit discharge from a development
under construction during the 2005 rain event.
On June 26, 2006, Council approved plans and specifications and authorized ad for
bids.
On June 12,2006, the Council reviewed a Sanitary Sewer Infiltration and Inflow
(1&1) Reduction Plan. The surcharge amount MCES is charging the City is $311,920
per year for five years. The surcharge amount was calculated based on the amount of
metered 1&1 that entered the MCES trunk system from the City system during a large
rainfall event in 2005. Staff was directed to finalize the plan to eliminate the
surcharge fee and convert this amount into the Capital Improvement Plan for 1&1
projects.
On December 12, 2005, Council held a joint meeting with Metropolitan Council staff
to discuss the MCES Sanitary Sewer Surcharge Program.
DISCUSSION
The 2006 1&1 project is designed to identify and eliminate areas in the sewer system
that allows groundwater or surface water to enter the system. These improvements
include lining sewer pipes, pipe joint sealing, grouting manholes and pipe joints.
Two alternate bids were included in the project. The Alternate A is for cleaning and
televising City sewers. This alternate was bid out per linear foot and allows the City
to approve any amount of televising. The alternate was for cleaning and televising
170,000 feet of sewer pipe. The areas to be televised will be used to plan for the
The City ofChanhassen. A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play.
G:\ENG\PUBLIC\06-11 2006 San Sewer Rehab Prog\bkgd 111306 award contr apmv agr w mces.doc
following year's improvements. The areas that are proposed to be televised are
anticipated to be the biggest contributors to 1&1. Alternate B is for televising 24,328
feet of Metropolitan Council sanitary sewer within the City. The Metropolitan
Council will pay 100% of the contract and engineering and construction services
work.
On September 2,2006 at 10:00 a.m., bids were received. The bids received are as
follows:
Bidder
Visu-Sewer Clean and Seal Inc.
Infrastructure Technologies
Base Bid
$75,949.08
$107,060.12
Alternate A
$161,500
$241,400
Alternate B
$31,626.40
$43,790.40
Totals
$269,075.48
$392,250.52
The Engineer's estimate for the project was $363,057.00.
The budget for the City improvements was $150,000. Based on the bids received, all
of the base bid and $70,000 worth of televising and cleaning could be awarded to stay
within budget. However, staff feels the cost for televising and cleaning could
increase significantly over the next few years. This is due to the demand for these
services by communities in the metro area because of the MCES surcharge program.
Very few contractors are available in the metro area to complete these types of
projects. Staff is requesting that a portion of the 2007 1&1 budget be used to televise
and clean the number of sewers bid out. Staff has reviewed these unit costs and finds
them very competitive. The preliminary CIP budget for 2007 has $210,000 budgeted
for 1&1. Staff is requesting that a portion ($87,449.08) of the 2007 budget for 1&1 be
used under this contract. The 2007 CIP budget amount will be reduced to reflect the
change if approved. The televising work under this project will identify
improvements for future years' improvements. Staff has worked with Visu-Sewer,
Inc. on other jobs and finds their work acceptable.
Staff recommends awarding the 2006 1&1 Project to Visu-Sewer Clean and Seal Inc.
in the amount of $269,075.48.
Attachment
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Capitol Improvement Program
City of Chonhassen, MN
SS-012
Project #
Project Name Inflow and InfIltration Abatement
Account # 1
Account #2
Account # 3
2006 thru 2010
Contact Unassigned
Department Sanitary Sewer hnprovements
Type hnprovement
Useful Life Unassigned
Category Utilities
Priority nla
Total Project Cost $450,000
Description
This annual project includes televising, repairs and rehabilitation of existing sanitary sewer. The program also detects and eliminates points of entry of ground
water and surface water into the City sanitary sewer system.
Justification
City staff has identified numerous older sewer lines that are in need of repair. The City ofChanhassen pays the Metropolitan Council for sewage treatment. Those
payments are based on the amount of flow generated by the City of Chanhassen. Surface water and ground water that makes its way into the system either through
breaks, displaced joints, manhole covers, or private connections to the system increase the amount charged to the City fOr sewage disposal and increasing the load
on the City's lift stations. Also, MCES may place a surcharge on cities that are not trying to improve" the inflow and infiltration problem.
Expenditures
Maintenance
2006
150,000
150,000
2007
75,000
75,000
Total
Funding Sources
Sewer Utility Fund
2006
150,000
150,000
2007
75,000
75,000
Total
Operationallmp~t/Other
The efforts mayl decrease operational costs, emergency call outs and maintenance costs.
108
2008
75,000
75,000
2008
75,000
75,000
2009
75,000
75,000
2009
75,000
75,000
2010
75,000
75,000
I
Total
450,000
450,000
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2010
75,000
75,000
Total
450,000
. 450;000
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