Hydrologic and Floodplain Impact Assessment

The contract entails conducting a detailed hydrologic analysis to support the selection of bridge locations outside the 100-year floodplain along Bull Run Creek, with a focus on evaluating stormwater runoff patterns, peak flow rates, and potential erosion impacts. The work is essential for ensuring infrastructure stability and minimizing environmental disturbance by validating that proposed bridge sites remain safe and viable under extreme hydrologic conditions. The assessment will require modeling and field data collection to quantify water movement and sediment transport, ultimately providing technical justification that the chosen alignment avoids flood hazard zones while preserving natural creek dynamics. This subcontract is classified under NAICS code 541410, indicating it involves specialized scientific and technical consulting services in hydrology and environmental analysis. The Sierra Nevada Conservancy, operating under the California state agency structure, is the contracting entity, and the work is scheduled to commence following the posting date of June 8, 2026. Although the precise location details and point of contact are not provided, the project's scope is tied to Bull Run Creek, and the deliverables will serve as critical inputs for permitting and design decisions related to bridge construction. The project is accessible through a public link managed by the California environmental compliance system.