Geology Expert Witnesses in California

San Francisco, California

Environmental, Geology - Hydrogeology, Groundwater, solvents, petroleum hydrocarbons, soil vapor, soil gas, vapor mitigation, dry cleaner, military base, military operations, groundwater modeling, fate & transport, site history , due diligence, cost allocation, cost recovery, CERCLA, NCP, RCRA, PRP identification

Ms. Shipman is a senior director and hydrogeologist. Her previous experience managing U.S. Air Force and Navy base cleanup work transformed to directing environmental work at five military base conversions. Ms. Shipman is experienced in strategy development for environmental compliance and management, regulatory agency negotiation and community and public outreach. She has provided expert testimony in California Superior Court regarding UST cleanup, vapor mitigation, and closure and deposition testimony in US Federal Court cases in California regarding sources and fate and transport of solvent releases to groundwater and environmental compliance of industrial operations. She directs litigation support projects that include groundwater flow and fate and transport modeling, cost allocation apportionment, and 3D GIS modeling of watersheds. Dorinda’s expertise includes site characterization, human and ecological risk evaluation, and remediation and risk management for dry cleaners a...

Newport Beach, California

Geology, Environmental - Hydrogeology, Wells, Geologic Modeling, PFAs, Drilling, Groundwater and Soil, Recharge, Volatile Organic Compounds - VOC, Bedrock and Karst, CERCLA, Aquifers & Characterization, Aquifer Storage and Recovery - ASR, Chlorinated Solvents, Water Suppy, RCRA, Contamination, Managed Aquifer Recharge - MAR, Well Performance, Water Resources

Eros A. Bilyeu, PG, CHG, CGWP, QSD/QSP is a California-licensed Professional Geologist and Certified Hydrogeologist specializing in groundwater supply, recharge, and contamination investigations. He is the Principal Hydrogeologist of Hydro-Geologic Solutions, Inc., a certified small business headquartered in Newport Beach, California. Mr. Bilyeu provides expert analysis, consulting, and testimony for litigation, permitting, and regulatory matters involving complex subsurface and water-supply issues. Eros has been retained as an an expert witness five times, deposed once, and requested to testify twice in the last four years. Following expert opinion reports/presentations or deposition, cases have ended in settlement and satisfied clients as a result. Mr. Bilyeu has more 18 years of hydrogeologic experience supporting cities, water districts, and engineering firms throughout California and the western U.S. His expertise spans: Well design, construction, and performance testing (...