Groundwater Modeling and Reporting Services for the West Coast Basin Barrier Project

West Basin Municipal Water District is seeking a qualified engineering firm to provide annual groundwater modeling and reporting services supporting the West Coast Basin Barrier Project, a hydraulic barrier designed to prevent seawater intrusion into the Los Angeles coastal aquifer system. The contractor will develop, run, and document groundwater flow and solute transport models, prepare technical memoranda, and supply data for the five‑year engineering report and annual permit compliance. The work is governed by state water quality permits and requires a licensed Professional Geologist review. • Scope includes model setup, calibration, scenario analysis, and annual update reports. • Deliverables: technical memorandum, model files, data visualizations, and a professional geologist sign‑off. • Required qualifications: experience with groundwater/salt‑water intrusion modeling, familiarity with California Title 22 recycled‑water regulations, and ability to provide key personnel resumes. • Proposal deadline: Oct 20 2026, 2 pm; questions due Oct 12 2026. • Contract award expected week of Nov 16 2026; initial term 1 year with potential annual renewal.