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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 has executed Lake and Streambed Alteration Agreement EPIMS Notification No. EPIMS-SON-50489-R3 for the repair of a scoured bridge footing at Porter Creek on Sweetwater Springs Road in Sonoma County. The project involves surrounding a 63 square foot footing with corrugated, galvanized steel sheets to expand the footprint to approximately 119 square feet, providing scour protection and reestablishing foundation bearing. These sheets must be embedded at least two feet into gravel and soil or six inches into hard rock, with the interior area filled with concrete backfill. Construction will utilize a vacuum truck and pneumatic hand tools, with all vehicles staged on the roadway above the creek bank to ensure only the work crew and hand tools operate below the top of the bank. Environmental protections are central to the project, requiring a water diversion system and dewatering if water is present, which must be maintained for 30 days post-repair to allow the concrete to cure. An on-site biologist will monitor for coho salmon and steelhead juveniles, though these species must not be collected or relocated. The project is expected to result in 56 square feet of permanent and 400 square feet of temporary impact to open channel habitat, with no removal of trees or riparian vegetation. This work is conducted under the authority of Section 1602 of the Fish and Game Code and is managed by the Sonoma County Permit and Resource Management Department.

General Info

CDFW agreement for Porter Creek bridge footing repair and scour protection in Sonoma County.

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

AI Contract Breakdown

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.