Geology Expert Witnesses

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 (...

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...

Saint Johns, Florida

Geotechnical Engineering, Geology - construction, construction engineering, engineer, foundations, sinkholes, piles, shoring, earthquake, ground, slope, slide, aggregate piers, stone columns, rigid inclusions, vibrations, subsidence, ground improvement, karst, liquefaction, differential

Dr. Ed Garbin, Ph.D., P.E., D.GE President & Principal Engineer – Garbin GeoStructural Group, LLC When technical clarity and real-world experience are critical to your legal matter, turn to Dr. Ed Garbin, a nationally recognized authority in geostructural and construction engineering. With more than 30 years of combined construction and engineering experience, Dr. Garbin brings a rare dual perspective to the expert witness role. He began his career on construction crews before earning his Ph.D. in Geotechnical Engineering and PE licensure in 2003. He is now licensed in 40 states and Board Certified in Geotechnical Engineering (D.GE) by the ASCE Geo-Institute's Academy of Geo-Professionals. His expertise spans commercial, industrial, and heavy-civil construction, including: Shallow and Deep foundations Foundation load and integrity testing Ground improvement (aggregate piers, grouting, soil mixing, rigid inclusions) Earth retention and support of excavation (soldier piles, sheet ...

Center , Pennsylvania

Geology, Environmental - Groundwater, Hydrogeology, Geology, Geo-Hazards, Mining, Stormwater, Oil & Gas, Bedrock Aquifer, Groundwater Contamination, Environmental Forensics, Environmental Evaluation, Environment, Water Resources, Water Supply, Karst, Karst Geology, Karst Hydrogeology, Sinkholes

Expertise in hydrogeology, geology and environmental forensics with a specialization in groundwater flow and contaminant transport in fractured bedrock aquifers. Mr. Gillespie's technical expertise is complemented by an industry insider’s savvy of corporate needs and operations and the regulatory acumen of a former agency reviewer and bureau official. He is a published researcher in hydrostructural geology and karst hydrogeology, an adjunct university professor of geology and a frequent provider of continuing professional education courses. Mr. Gillespie is routinely invited to speak on matters of earth, environment and energy to government committees, national business organizations and educational institutions. He developed and leads a geoResource Risk Reduction practice, specializing in strategic representation in regulatory and legal venues. Mr. Gillespie has provided litigation support, testifying expert services, expert regulatory negotiation support and public representa...

Houston, Texas

Oil and Gas, Economics - Valuation of petroleum assets, international oil and gas, petroleum contracts and agreements, petroleum sector taxation, petroleum engineering, energy economics, geology, arbitration and litigation, petroleum industry standards and practices, industry expert, drilling, exploration and production

Mr. Cline has acted in the capacity of expert witness particularly with respect to valuation of petroleum properties and/or petroleum industry practices in numerous arbitration, mediation and litigation proceedings including: ExxonMobil vs. Venezuela (ICSID); ExxonMobil vs. Petróleos de Venezuela (ICC); Anadarko Petroleum/Maersk vs. Sonatrach (UNCITRAL); Maersk vs. Algeria (ICSID); Sonatrach vs. Duke (UNCITRAL); Texaco vs. Apache (AAA); Vanco vs. Ukraine (Stockholm Chamber of Commerce); Occidental vs. Ecuador (mediation); CNOOC vs. Talisman (mediation); a series of arbitrations related to Egypt’s natural gas sector (ICC, ICSID, UNCITRAL and CRCICA); Midland Resources vs. Shtaif et al. (Ontario Superior Court); Total/ExxonMobil/Chevron/Nexen vs. NNPC (Nigerian arbitration); Repsol vs. Chevron (Spanish litigation); Niko vs. Bangladesh (ICSID and Bangladesh litigation); First National Petroleum vs. TNG (Stockholm Chamber of Commerce); Nexen/Occidental et al. vs. Yemen and multiple case...

Houston, Texas

Oil and Gas, Geology - Land, Engineering, HSE, Structural mapping, Title, Drilling Operations, Production, Horizontal wells, Geophysics, Completion Operations, Exploration, Reservoir Engineering, Safety, Stratigraphy

AREAS OF EXPERTISE Oil and gas exploration, exploitation, and development • Proficient in all areas of upstream oil and gas • Have supervised the drilling, completion, and production of over a thousand oil and gas wells • Familiar with industry accepted and customary practices Gulf Coast, Gulf of Mexico, US shale plays • Have extensive experience throughout these areas • Have worked 249 distinct trends, fields and prospects (see addendum) Operational planning and oversight of drilling programs • Preparing geological prognosis • Review drilling procedures • Adherence to state and local regulations • Monitoring daily mud logs, directional targeting, MWD, and geosteering • Recommending specific coring and logging programs • Interpreting well logs, core analysis, and mud logs • Deciding on major drilling decisions such as whether to complete a well, sidetrack, or plug it • Review of completion design and procedures including fracking operations • Review facilities design including ha...

Ritzville, Washington

Geotechnical Engineering, Civil Engineering - trenchless, drilling, tunnel, tunneling, pipeline, HDD, microtunnel, auger, boring, pipe, ramming, sinkhole, geology, construction, DSC, differing, horizontal, directional

I am a nationally recognized Geotechnical Engineer and Trenchless Expert. I have been involved with litigation matters involving construction issues related to pipeline installations using trenchless technologies. Qualifications and Accreditation M.S., Geological Engineering, University of Alaska, Fairbanks, 1996 B.S., Geological Sciences, University of Washington, 1994 California: Professional Engineer (Civil), Cert. No. C74224 Washington: Professional Engineer (Civil), Lic. No. 37412 Alaska: Professional Engineer (Civil), Lic. No. AELC11636 Texas: Professional Engineer (Civil), Lic. No. 160143 Memberships and Professional Organizations American Society of Civil Engineer (ASCE) • Executive Committee, Pipeline Division, Board member, 10/2024 to present • Manual of Practice (MOP) for Introduction to Trenchless Technologies (new MOP), Committee chair, 9/2024 to present • MOP for Horizontal Directional Drilling (MOP 108) committee member, 2021 to present • MOP for the Direct Steera...