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HomeMy WebLinkAboutItem No. 11 PPP - 2-92A 151 •.. ( r � r + .r F '771. �y ♦ �� f / Sludge Project No. P2-92A Operations • . . r\. — November i r r y, Project Objectives • Replace dewatering facilities that have reached the end of their service life at Plant No. 2 with more efficient technology ( Project P2-92) . • The biosolids produced by the centrifuges will be more odorous than the current biosolids. • This project modifies the existing truckloading facility to improve odor control to coordinate with the new Centrifuge Project. P2=92A Truckloading Odor Control Separate project to '�'► . minimize risks to the larger P2-92 �M - p roj e ct. .1 Limited workspace to retrofit odor system into existing - building area . Project Challenges • Unknown utilities and/or utility locations requiring additional work - $ 104K • Design changes or omissions requiring additional work to install new equipment into the existing facility - $ 145K • OCSD required additional equipment and modifications to address safety concerns in chemical containment areas - $66K Contract and ContingencyStatus Contract Status Original Construction Contract $3,304,000 Current Percent Complete 81% Projected Final Completion March 2019 Contingency Status. Amount Authorized Contingency $330,400 10.0% Approved Changes $220,800 Pending Changes $90,500 Remaining Contingency $19,100 Additional Contingency Requested $132,160 4.0% Total Requested Contingency $462,560 14.0% Recommended Action • Approve a contingency increase of $132, 160 (4%) to the construction contract with Kiewit Infrastructure West Co., for a total construction contingency of $462,560 ( 14%) . Ilow Ab- � n `r t � VA �r � -_ram"----