Title
Environmental Management Director recommending her signature be ratified on Change Order No.2 to Contract 031-PW-06/07-BOS with D&E Construction, Inc. to supply and install additional LLDPE geosynthetic liner and geocomposite drainage layer material for the construction of the Final Cover, Union Mine Landfill 13.6 Acre Final Closure project.
RECOMMENDED ACTION: Approve.
Body
BUDGET SUMMARY:
Total Estimated Cost $28,875.12
Funding
Budgeted $
New Funding $
Savings $
Other $
Total Funding Available $28,875.12
Change To Net County Cost $0.00
Fiscal Impact/Change to Net County Cost: Funding for the Change Order is available in the FY 2007-08 CSA #10 proposed budget. There is no cost to the General Fund.
Background: The closure for the 15.8-acre Class III Old Landfill at the Union Mine Disposal Site specified by the Central Valley Regional Water Quality Control Board (CVRWQCB) in new Waste Discharge Requirements Order No. R5-2006-0020 was required to be completed by August 15, 2007. As part of the Final Closure Plan, submitted to the CVRWQCB on March 30, 2006, it was identified that 13.6 acres of the 15.8-acre Class III Old Landfill Area would receive final cover in the year 2007. The remaining 2.2 acres are scheduled to be closed in the year 2040, the projected closure date of the Class II active disposal area.
The closure of the Union Mine Landfill project was divided into three components for bidding purposes. The first component being the supplying and hauling of soil for the Vegetative Cover, the second being the supplying and installation of the Geosynthetics, and thirdly, the construction of the Final Cover.
On May 22, 2007, the Board awarded a contract to D&E Construction, Inc. of Visalia, California to purchase and install the Geosynthetics for the construction of the Final Cover, 13.6-acre old Union Mine landfill area in the amount of $624,637.50.
Reason for R...
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