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Irvine Ranch Water District issued a competitive construction bid (Syphon Reservoir Improvement Project) to demolish the existing reservoir and construct a new earth-fill dam and 5,000-acre-foot reservoir with associated inlet/outlet works, water treatment facilities, electrical systems, and new access roads. Only bidders previously prequalified and listed on the Project Bidders List may submit bids; the prequalification period is closed. The project has an estimated value of about $322,000,000 and a bid deadline of March 17, 2026 at 3:00 PM PST.
Starbridge can help you:
Pain points mentioned in board meetings and strategic plans
Instantly outline and draft all requirements
Bring in your USPs and exploit competitor gaps
Starbridge can help you:
Get ahead of RFPs — target accounts planning budget or ending contracts soon
Accounts with contract expirations, meetings mentioning your product, grants, budget changes and more
Starbridge.ai books 30 - 40% of leads into meetings
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Work includes reservoir dams improvement.
Posted Date
Dec 4, 2025
Due Date
Jan 27, 2026
Release: Dec 4, 2025
Close: Jan 27, 2026
Work includes reservoir dams improvement.
AvailableWork consists of approx. 380 SY of salvaged topsoil; 380 SY of erosion mat (class I urban type A); 200 LF of silt fence; 44 LF of concrete wall crack repair; 50 LF of concrete roof crack repair (as ordered); 43 LF of 10" PVC SDR 35 storm sewer; 15 LF of 12" PVC SDR 35 storm sewer; 30 SF of concrete splashpad, 6" thick; 20 CY of common excavation; 40 LF of remove existing overflow discharge piping Vande Hei rectangular reservoir; see outside link for more details.
Posted Date
Jan 6, 2026
Due Date
Jan 27, 2026
Release: Jan 6, 2026
Close: Jan 27, 2026
Work consists of approx. 380 SY of salvaged topsoil; 380 SY of erosion mat (class I urban type A); 200 LF of silt fence; 44 LF of concrete wall crack repair; 50 LF of concrete roof crack repair (as ordered); 43 LF of 10" PVC SDR 35 storm sewer; 15 LF of 12" PVC SDR 35 storm sewer; 30 SF of concrete splashpad, 6" thick; 20 CY of common excavation; 40 LF of remove existing overflow discharge piping Vande Hei rectangular reservoir; see outside link for more details.
Road improvement project.
Posted Date
Jan 9, 2026
Due Date
Feb 3, 2026
Release: Jan 9, 2026
Close: Feb 3, 2026
Road improvement project.
AvailableConstruction of a new chlorine contact basin, and structural upgrades of the existing finished water reservoir. Construction requires the removal of solids recovery basin (srb) #3 and relocation of piping and electrical for the solids recovery pump station. The remaining work consists of a new ramp into the concrete-lined basin, a roadway along the west and south side of the srbs, replacement of HVAC equipment, and new generators at the operations annex and south coast booster pump station. Work also includes installation of piping and other appurtenances to complete the work, and the repair and reconstruction of existing improvements affected by the work, and incidentals for complete and usable facility.
Posted Date
Nov 6, 2025
Due Date
Jan 29, 2026
Release: Nov 6, 2025
Close: Jan 29, 2026
Construction of a new chlorine contact basin, and structural upgrades of the existing finished water reservoir. Construction requires the removal of solids recovery basin (srb) #3 and relocation of piping and electrical for the solids recovery pump station. The remaining work consists of a new ramp into the concrete-lined basin, a roadway along the west and south side of the srbs, replacement of HVAC equipment, and new generators at the operations annex and south coast booster pump station. Work also includes installation of piping and other appurtenances to complete the work, and the repair and reconstruction of existing improvements affected by the work, and incidentals for complete and usable facility.
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