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