Tyler Island Road Bridge over Georgiana Slough Technical Analysis (Streambed Alteration Agreement No. EPIMS-SAC-58445-R3)

The California Department of Fish and Wildlife, under Section 1602 of the Fish and Game Code, has issued Streambed Alteration Agreement EPIMS-CCA-58445-R3 to the Sacramento County Department of Transportation for a geotechnical investigation of the Tyler Island Road Bridge over Georgiana Slough near Isleton, California. The scope of work involves conducting three boreholes and cone penetration tests near Piers 2 and 3 of the bridge, with a maximum depth of 120 feet below ground surface, to assess subsurface conditions caused by observed scour at the swing span piers. All field activities will be performed from a barge or small watercraft launched from an existing ramp, with no vegetation removal or water diversion planned. The project qualifies for categorical exemptions under California Code of Regulations, Title 14, Sections 15304 and 15306, due to its minimal environmental impact and focus on data collection. The agreement is a state-level environmental permit, not a federal contract, and no Federal Acquisition Regulation clauses are applicable. The place of performance is clearly defined as the Tyler Island Bridge site, and oversight responsibility rests with the California Department of Fish and Wildlife’s Region 3 - Bay Delta office. No contract value, payment terms, delivery schedule, invoicing method, or accounting identifiers are specified in the documentation. The project was posted on November 17, 2025, with an exemption notice filed on October 24, 2025. Primary point of contact for environmental compliance is Elijah Portugal, Environmental Scientist, with Anastasia Shippey representing the Sacramento County Department of Transportation. No formal solicitation, evaluation factors, representation certifications, or special contract requirements are documented, indicating a streamlined environmental permitting process rather than a competitive procurement.