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Porter Creek Bridge Repair on Sweetwater Springs Road (Notification of Lake or Streambed Alteration, No. EPIMS-SON-50489-R3)

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State & Local

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

The California Department of Fish and Wildlife, through the Sonoma County Permit and Resource Management Department, is executing a regulated repair of a scoured bridge footing in Porter Creek, identified by Lake and Streambed Alteration Agreement EPIMS-SON-50489-R3, under Section 1602 of the Fish and Game Code. The scope is limited to stabilizing a 63-square-foot footing by surrounding it with corrugated, galvanized steel sheets that will expand the footprint to approximately 119 square feet, embedded at least two feet into gravel or soil or six inches into hard rock. The steel will serve as containment and formwork for concrete backfill placed beneath the footing, restoring structural bearing and providing scour protection. Work methods are tightly constrained to minimize environmental disturbance: excavation will be conducted using vacuum trucks and pneumatic hand tools, concrete will be delivered via tube from a cement truck, and all equipment will be staged above the creek bank. If water is present during construction, a temporary dewatering system will be installed and maintained for 30 days after completion to ensure proper concrete curing, during which time no fish will be collected or relocated. A biologist will be on-site throughout to monitor for coho salmon and steelhead juveniles, ensuring compliance with protections under state law. The project will cause a permanent impact of 56 square feet to open channel habitat and a temporary impact of 400 square feet due to dewatering, but no trees or riparian vegetation will be removed. The work is categorized as a Class 1 Categorical Exemption under CEQA, and all activities must strictly adhere to the terms of the environmental permit. Key contacts include James Hansen of CDFW and David Walsh of Sonoma County, who oversee environmental compliance and project implementation, though no formal contract value, payment terms, or federal acquisition regulation clauses are specified in the documentation.

General Info

Stabilize bridge footing with steel and concrete, minimal disturbance, no vegetation removed, biologist monitors for protected fish.

Agency

California → Fish and Wildlife, Region 3 - Bay Delta, Fairfield

NAICS

237310 - Highway, Street, and Bridge ConstructionView NAICS

Place of Performance

Set-Aside

NONE

Documents

(1)

EPIMS-SON-50489-R3 Notice of Exemption for Porter Creek Bridge Repair

PDF•notice-of-exemption

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Uniform Contract Format

Timeline

PostedOct 23

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Organization & Contact Information

AgencyCalifornia → Fish and Wildlife, Region 3 - Bay Delta, Fairfield

Contacts2 people available

OfficeN/A

Organization / Agency

California → Fish and Wildlife, Region 3 - Bay Delta, Fairfield

Office AddressN/A

Contacts

James HansenEnvironmental Scientist

contact@example.gov

+1 (555) 000-0000

David WalshSenior Environmental Specialist

contact@example.gov

+1 (555) 000-0000

Full Description

The California Department of Fish and Wildlife has executed Lake and Streambed Alteration Agreement EPIMS Notification No. EPIMS-SON-50489-R3, pursuant to Section 1602 of the Fish and Game Code to Sonoma County Permit and Resource Management Department. The project is limited to the repair of the existing scoured bridge footing, measuring approximately 63 square feet, within Porter Creek. The scoured footing perimeter will be fully surrounded with corrugated, galvanized steel sheets, expanding the footprint to approximately 119 square feet. The steel sheets will be embedded at minimum 2 feet into gravel and soil, or six inches into hard rock. The steel sheets will match the height of the existing footing, and the area inside the steel sheets will be backfilled underneath the footing with concrete backfill material. The purpose of the galvanized steel sheets is to provide scour protection below grade, act as forms and containment for the concrete backfill, and reestablish the bearing of the foundations of the bridge. Excavation will be performed with a vacuum truck and pneumatic hand tools. Concrete will be delivered through a tube running from a cement truck. All trucks would be staged above the creek bank on the roadway. Only the work crew and hand tools will be working below the top of bank. If water is present in Porter Creek at the time of project construction, a water diversion system will be installed and the work area will be dewatered. A biologist will be on-site to monitor for wildlife and to identify if any coho salmon (Oncorhynchus kisutch pop. 4) or steelhead (Oncorhynchus mykiss irideus pop. 8) juveniles are in the pools. At no time will coho salmon or steelhead be collected or relocated. The water diversion will be maintained for 30 days following the repair to allow concrete to properly cure. The project will result in approximately 56 square feet of permanent impact to open channel habitat and a temporary impact to approximately 400 square feet of open channel habitat due to dewatering. No trees or riparian vegetation will be removed as part of this project.