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CC 2018-04-24_12a Lift Station No. 1 Force Main Project PresentationLIFT STATION No . 1 FORCE MAIN REPLACEMENT PROJECT PRELIMINARY ENGINEERING REPORT SUMMARY APRIL 24, 2018 City of Arroyo Grande •Purpose of Project •Critical Project Components •Possible Alignment Alternatives •Preferred Alignment Study •Project Cost Summary Preliminary Engineering Report Summary Lift Station and Force Main Constructed in 1973 and is the largest in the City Force Main consists of corroded cast iron piping City has repaired several areas where the pipe has leaked.Latest was in December of 2015. Purpose of Project Maintain Lift Station Operation Highway 101 Crossing Protecting Pavement and Mitigating Traffic Disruption Critical Project Elements Alignment Alternatives Developed Four Potential Alignment Alternatives Based on discussions with City Staff, selected alignment that best met the critical project requirements. Preliminary Engineering Report Reviewed feasibility of preferred alignment Pump performance Effects on downstream facilities Estimated project construction costs Existing Pump Performance Developed new system curve for proposed alignment to determine pump capacity and expected efficiency Expect to see slightly less capacity (5% to 10% loss) but still well above future incoming flow estimates. Pump efficiency is relatively unchanged. Estimates include use of fused high density polyethylene (HDPE) pipe with low friction coefficient Downstream Collection System Capacity Modeled estimated total flows through existing collection system Gravity pipes would flow at d/D of 0.6 to 0.75 at future conditions. Existing manholes may require corrosion protection due to increased flows. This could be included with future manhole coating projects. Preliminary Opinion of Probable Construction Cost Questions City of Arroyo Grande Proposal for Design Services for Sewer Lift Station No.1 Force Main Replacement Project- Phase 2 Principal EngineerProject ManagerSenior EngineerAssistant EngineerDraftingAdministrative AssistantTotal Hours ODCsEarth Systems Inc.(Geotechnical Investigation)MBS(Survey)Total MKN LaborTotal Cost Task 301 Project Review Meetings (up to 2)6 6 20$ 990$ 1,010$ Task 302 City Council Meeting 2 2 4 20$ 580$ 600$ Task 303 Staff Report Preparation Assistance 2 4 6 950$ 950$ Subtotal 0 2 12 2 0 0 16 40$ -$ -$ 2,520$ 2,560$ Task 401- Utility Review 2 6 12 20 2,780$ 2,780$ Task 402- Survey 2 2 4 13,365$ 474$ 13,839$ Task 403- Geotechnical Investigation 2 2 17,248$ 290$ 17,538$ Subtotal 0 6 6 12 2 0 24 -$ 17,248$ 13,365$ 3,544$ 34,157$ Task 501-50% Plans and Specs 50% Planset 2 8 28 24 36 98 12,442$ 12,442$ 50% Technical Specifications 2 2 8 8 2 22 3,070$ 3,070$ 50% Cost Opinion 8 4 12 1,820$ 1,820$ Task 502-95% Plans and Specs 95% Planset 2 8 28 24 36 98 12,442$ 12,442$ 95% Technical Specifications including City Up Fronts 2 2 16 18 2 40 5,640$ 5,640$ 95% Cost Opinion 8 4 12 1,820$ 1,820$ Task 503-Final Plans and Specs Final Planset 1 4 8 12 12 37 4,679$ 4,679$ Final Technical Specifications including City Up Fronts 1 2 6 8 2 19 2,565$ 2,565$ Final Cost Opinion 4 4 660$ 660$ Subtotal 10 26 114 102 84 6 342 -$ -$ -$ 45,138$ 45,138$ Task 601- Bid Phase Services Pre-bid Conference 1 1 20$ 145$ 165$ Respond to Bid Phase RFIs and prepare addenda (up to 2)4 4 2 10 1,424$ 1,424$ Task 602- Construction Phase Services Construction Progress Meetings (up to 6)4 12 16 120$ 2,560$ 2,680$ Respond to RFIs (up to 6)4 8 6 18 2,650$ 2,650$ Submittal Review (up to 15)3 8 15 26 3,630$ 3,630$ Contract Change Order Request Review (up to 2)2 4 6 950$ 950$ Final Walk Through 2 2 290$ 290$ Task 603- Record Drawings 2 6 16 2,752$ 2,752$ Subtotal 0 22 42 21 18 0 79 140$ -$ -$ 14,401$ 14,541$ Public Outreach Assistance 16 16 4 36 5,328$ 5,328$ Subtotal 0 16 16 0 4 0 36 -$ -$ -$ 5,328$ 5,328$ TOTAL BUDGET 10 66 184 125 106 6 473 180$ 17,248$ 13,365$ 70,931$ 101,724$ Task Group 300 - Phase 2 Project Meetings Task Group 500 - Plans, Specifications, and Estimates Task Group 600 - Bid and Construction Phase Support Task Group 400 - Preliminary Engineering Task Group 700- Public Outreach Assistance