This Project combines storm drain and sewer construction work in one construction contract for the purposes of the most efficient and economic delivery of both types of underground construction projects. The storm drain improvements are located on Lampson Avenue and Ranchero Way and include the removal and replacement of existing catch basins, sidewalks, curbs and gutters, access ramps and cross gutters, rehabilitation of existing alleys, adjustment of utility covers to finish surfaces, installation of traffic loop detectors, and other pertinent work. The sewer improvements consist of constructing new replacement sewer lines in Nutwood Street, Imperial Avenue, and Central Avenue. The improvements include approximately 3,681 linear feet of new replacement extra strength Vitrified Clay Pipe (VCP) sewer line of various sizes (8-inch, 10-inch, 12-inch, and 15-inch), installation of approximately 554 linear feet of new replacement 8-inch Polyvinyl Chloride Pipe (PVC) sewer line, construction of twenty one (21) new sewer manholes, removal of twenty (20) existing sewer manholes, and removal and/or abandonment of existing sewer pipes.

Staff solicited bids to construct the East Garden Grove Storm Drain and Sewer Improvements Project.  Five (5) bids were received and opened in the City Clerk's Office at 11:00 a.m. on May 24, 2016.  The lowest qualified bidder is Mamco, Inc., with a total bid of $1,876,543.21.  This bid is within the current project budget.  The licenses and references of the contractor have been reviewed and verified by staff, and all other documentation is in order.

The anticipated contract schedule is as follows:

Award contract                                   - June 28, 2016

Begin construction (estimated)            - August 1, 2016

Complete construction (estimated)      - June 8, 2017

The East Garden Grove Storm Drain and Sewer Improvements Project is included in the 2015-16 Capital Improvement Budget and will be financed with Drainage Fee Funds in the amount of $242,530.00 and Sewer Funds in the amount of $1,634,013.21.  There will be no impact to the General Fund.

The following actions are recommended:

City Council Action

• Award a contract to Mamco, Inc., for City Project No. 7405 that includes Sanitary District Project Nos. 7834 and 7837 -  East Garden Grove Storm Drain Improvements Project for a total amount of $1,876,543.21; and

• Authorize the City Manager to execute the agreement, and make minor modifications as appropriate thereto, on behalf of the City

Sanitary District Action

• Award a Contract to Mamco, Inc., for Sanitary District Project Nos. 7834 and 7837 that includes City Project No. 7405 -  East Garden Grove  Sewer Improvements Project for a total amount of $1,876,543.21; and

• Authorize the General Manager to execute the agreement, and make minor modifications as appropriate thereto, on behalf of the District.

By: Myung Joon Chun, P.E., Associate Engineer