Loading...
HomeMy WebLinkAboutItem 5 PPP Operations Committee 3-1-17 - P1-100 Contingency Increase WE W:, l W., .rsw mi ' Ala I mill, I k l I I�,I ,'. .= r� �; fi PF SLUDGE DIGESTER REHABILITATION AT PLANT NO. 1 PROJECT P1-100 r .4► ...�, 0-.. , -�9Y;e�f l Il�al mom • • • JAS • • 1 • Ah - R I ME low am M �I M� 1 Plant No . 1 Digesters Before P1 -100 & P1 -101 Projects PRIMARY CLARIFIER DIGESTER BELT FILTER PRESSES CAKE CAKE STORAGE LOADOUT DISSOLVED AIR SECONDARY FLOTATION CLARIFIER THICKENERS i After P1 -100 & P1 -101 Projects PRIMARY THICKENING CLARIFIER CENTRIFUGE DIGESTER DEWATERNG CAKE CAKE CENTRIFUGE STORAGE LOADOUT 71-F17 - i ---00-N, SECONDARY CLARIFIER Current Status • Rehabilitation of all digesters is complete; commissioning two remaining digesters. • Potential unknowns are identified and mitigated • Project is two months ahead of revised schedule • Forecasted completion this summer • Only remaining area of concern is safety risk of the digester domes �I.� �� _ �_ -� - . .- ��11 gar►��� 1 �; ��-� _ O 1 /Oi6r/•��2SOs1�5 �09s: 55 tit 9 I stay -IL ate" • rt ' ii• #` -err �' � � � • JL Digester RoofingTest Patches y Test patches for different roofing systems to select best system to implement at remaining 8 digesters Current Diges-ter Roofing r- . i r 1 _ '.�• a .. _.. A New cementitious-based roofing system installed at remaining 8 digesters ■ Recommended Action • Mitigate potential slip hazards by installing now • Match the roofing system on the other digesters with consistent warranty • Work can occur without shutdowns to digesters • Pre-negotiated costs, work is well understood • Work is planned to complete within the current schedule • Cost efficiencies over a separate project Recommended Action • Approve a contingency increase of $ 1,005,000 (3%) to the construction contract with JR Filanc Construction Company for Sludge Digester Rehabilitation at Plant No . 1, Project No. P1-100, for a total contingency of $ 10,217,500 (30. 5%) . 4 , . IMF,