HomeMy WebLinkAboutItem 13 - 2015 Inflow and Infiltration ProjectAA 1:4 LVA
FROM: BRUNO RUMBELOW, CITY MANAGER /#-
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SUBJECT: AWARD OF ENGINEERING SERVICES CONTRACT — 2015
INFLOW AND INFILTRATION PROJECT
City Council consider approving an engineering services contract with Burgess & Niple, Inc.
in the amount of $ 141,450.00 for the design of the 2015 Inflow and Infiltration Project,
authorize staff to execute said contract, and take any necessary action.
Funds are programmed in the Wastewater Permanent Capital Maintenance Fun'*'
(PCMF) Acct # 201-48940-534-9-0004SW
P,►IM-001 Millon
Burgess and Niple, Inc, (B&N) has submitted a proposal to provide engineering design
services for the rehabilitation and replacement of existing sanitary sewer lines in the
Canterbury Village Addition, the Oak Grove Addition area, along Dove Road from Dove Lift
Station Number 2 to Kimball Road, in South Shore Acres within and downhill of Harber
Avenue and near the intersection of Placid Circle and Peninsula Drive.
The sanitary sewer lines proposed for rehabilitation in this project have been identified to
have excessive infiltration and inflow into the lines and are part of an ongoing effort to
maintain sewer infrastructure and avoid regulatory action against the City. The additional
groundwater and surface water introduced into the sanitary sewer collection system causes
excess flow to the wastewater treatment facilities and potential overflows from sewer
manholes.
The design is proposed to incorporate trenchless construction, where possible, where the
existing lines will be burst in place and simultaneously replaced with a new line. However
due to existing conditions and slope problems within the existing lines, there are areas
where open cut will be required. New sewer services and cleanouts will be installed for
residents served by the lines in these areas. Manholes and cleanouts for the sewer main
will be replaced or rehabilitated.
Canterbury Village Addition is a single family residential subdivision northwest of the
intersection of Dove Road and Silvercrest Lane. The sanitary sewer in Canterbury Village
Addition is clay pipe installed in 1973.
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RAAgenda\2015\05-19-15k1&1 eng Award.doc
The existing sanitary sewer lines along Dove Road draining to Dove Lift Station Number 2
is very flat and needs to be reconfigured to accommodate downstream elevation changes
and upcoming improvements to the existing lift station near the entrance to Horseshoe
Trails. The sanitary sewer lines along Dove Road between Silvercrest Lane and Kimball
also need to be rehabilitated. The majority of these sewer lines are clay pipe that were
installed in 1973.
The existing clay tile sanitary sewer in South Shore Acres was installed in 1968.
There is a section of clay tile sewer behind the homes near the intersection of Placid Circle
and Peninsula Drive that needs to be replaced within the Corps of Engineer's flowage
easement. This will be done by trenchless construction methods and new manholes will be
installed to prevent infiltration when the lake is at higher than normal elevations.
The engineering services portion of this contract with B&N totals $101,450.00. The special
services portion of this design contract is not to exceed $40,000 and Includes needed
surveying.
The construction budget is estimated by B&N to be approximately $1,202,927.00. B&N
specializes in this type of work, is well qualified to perform the design and we have used
them on past projects with excellent results.
Staff recommends approval.
RAAgenda\2015\05-19-15\I&1 eng Award.doc