Loading...
HomeMy WebLinkAboutItem No. 6 PPP P2-92 Sludge Dewatering and Odor Control P2 ■ � ,� Sludge Dewatering and Odor Control 9 Fill MMMMMW� at Plant 2 Project No . P2 =92 Operations Committee 1 \� ■ 'n`.a' �� July 10, 2019 jvn Project S _ �= Replacement DIGESTERS DEWATERING CAKE CENTRIFUGE STORAGE CAKE LOADOUT • Replace dewatering facilities that have reached the end of their service life at Plant No. 2 with more efficient technology • Lower biosolids management costs by reducing water content • Construct new odor control and chemical feed facilities for the new dewatering process • Demolish the aging belt press building roj tatu • Construction 95% complete • Testing of centrifuges is complete • Demolition of existin dewatering building Pas started im R iEa _ 0 (Q1 r • 2013 Hazardous Material Survey: • Asbestos testing was limited • Lead paint was in fair condition not requiring abatement • 2019 Hazardous Material Survey: • Identified over 700 gaskets as asbestos containing material • Lead paint is now in poor condition requiring abatement • Abatement will use the remaining project contingency JVr i 41 ContractStatus i ;_ _•{,mil � �� Potential , Contingency Requirement' 1 Groundwater dewatering risk (45 feet drawdown required) Unidentified subgrade structures Unidentified utilities passing through demolition area Construction interface with adjacent facilities . . Original Construction Contract $49,850,000 Authorized Contingency $2,492,500 5% Additional Contingency Requested $498,500 1% Total Contingency with this request $2,991,000 6% Recommended Acti 711"�%-' • Approve a contingency increase of $498 , 500 ( 1 %) to the construction contract with Shimmick Construction Company, Inc. for Sludge Dewatering and Odor Control at Plant 2 , Project No . P2-92 , for a total contingency of $2 , 991 , 000 Questions '?. 10? ��Illliljjlll iQ-4 a f _ l _ .v r r/