Title
Staff Report for a City of San Leandro City Council Resolution to Award an $807,055 Construction Contract to Insituform Technologies, LLC. for the Water Pollution Control Plant 36" Secondary Effluent Line Rehabilitation Project, Project No. 2018.6000; to Authorize the City Manager to Negotiate and Approve Individual Change Orders Up to 10% (or $80,705) of the Original Contract Amount; to Authorize the City Manager to Negotiate and Approve Change Orders up to a Cumulative Value not to Exceed 34% (or $274,399) of the Original Contract Amount; and to Appropriate $784,454 from the Water Pollution Control Plant Enterprise Funds' fund balance
Staffreport
SUMMARY AND RECOMMENDATIONS
The project will rehabilitate an existing 36" diameter secondary effluent (SE) pipeline located between the SE wet well at Secondary Clarifier No. 1 and the Effluent Pump Station at the City's Water Pollution Control Plant (WPCP).
Staff recommends the following actions:
* Award a construction contract in the amount of $807,055.00 to Insituform Technologies, LLC;
* Authorize the City Manager to negotiate and approve individual change orders up to 10% (or $80,705) of the original contract amount;
* Authorize the City Manager to negotiate and approve change orders up to a cumulative value of 34% (or $274,399) of the original contract amount; and
* Appropriate $784,454 from the WPCP Enterprise Funds' fund balance
BACKGROUND
The SE pipeline between the effluent box at the Secondary Clarifier No. 1 and the effluent box in front of the Effluent Pump Station consists of Concrete Cylinder Pipe (CCP) material, which was installed in the 1980s. This CCP pipe sprung a leak at a joint in front of the new Fixed Film Reactor Lift Station during the shoring removal process, as part of the WPCP Rehabilitation Construction Project. During a field investigation to install a repair coupling on the leaking joint, it was discovered that the joint design of the existing pipeline did not provide the ...
Click here for full text