Groundwater Expert Witnesses

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...

Concord, California

Civil Engineering, Hydrology - Flooding, Sewer, Lateral, Hydraulic Modeling, Groundwater, Weir, Spillway, Culvert, Pipeline, PACP, Stormwater, Hydrogen Sulfide, Septic, Sinkhole, Water treatment, Water intrusion, Drainage, Green infrastructure, Rain garden, Infiltration

Ms. Abadie is a Civil Engineer with a background in hydrology and water resources. She provides root cause and scope of damage evaluations and expert witness services. Prior to joining EDT, Ms. Abadie worked in multiple sectors of water and wastewater: groundwater protection, drinking water treatment and distribution, wastewater collection and treatment, urban runoff control, watershed assessment, and asset management. She spent twelve years as a collection system engineer for the City and County of San Francisco where she developed San Francisco’s Combined Sewer Discharge inspection program, installed dozens of flowmeters, walked and crawled through hundreds of miles of sewers, designed two baffles, ran model simulations, investigated flooding claims, oversaw repairs of large underground concrete structures, and pulled a bicycle out of a pump station inlet. Join her for a tour of San Francisco’s most beautiful combined sewer outfall here: https://www.kqed.org/news/11782405/tunn...

East Lansing, Michigan

Civil Engineering, Environmental Engineering - Groundwater, Wastewater, Remediation, Bioremediation, Modeling, Stormwater, Hydrogeology, Hydrology, Geotechnical, Microbiology, Contamination, Geochemistry, Construction, Demolition, Home Inspection

Dr. TImothy Mayotte is President and CEO of Mayotte Design & Engineering, PC, a civil and environmental engineering design firm based in East Lansing, Michigan. Since 2003, MD&E has proved itself a highly responsive design, advocate and risk management partner for clients in the energy, automotive, commercial printing, textile, pharmaceutical, chemical, real estate, and legal industries. MD&E offers a variety of services, specializing in the design and engineering of treatment solutions for wastewater, groundwater, stormwater and contaminated soil, sediment and air. Dr. Mayotte has assisted clientele across globe, having completed projects in: Alabama; Arizona; California; Colorado; Connecticut; Illinois; Indiana; Iowa; Kansas, Massachusetts; Michigan; Missouri, Mississippi; Nevada; New Jersey; New York; Ohio; Oregon; Tennessee; Texas; Vermont; Virginia; West Virginia; Washington, Wisconsin; Wyoming; British Columbia; Ontario; Quebec; Brazil; China; Czech Republic; Italy; and Mex...

Milford, New Jersey

Environmental, Chemistry & Chemicals - LSRP, Assessment, Remediation, CERCLA, TSCA, UST, Vapor Intrusion, Soil, Groundwater, PCBs, PFAS, Hazardous Substances, Cost Recovery, NJDEP, USEPA, Licensed Site Remediation Professional, Phase I, Brownfields, RCRA, Chlorinated Solvents

Mr. Ferguson leverages his nearly 40 years of experience and his credentials as a Licensed Site Remediation Professional (LSRP) to help clients manage their environmental needs, especially site assessment and remediation. He combines regulatory knowledge, remediation experience, and strategic vision to handle complex and high-profile cases, applying the most current scientific principles in contaminant fate and transport. His background includes a bachelor of science in chemistry from Ursinus College, managing a NJDEP certified environmental laboratory, OSHA and USEPA required hazardous substances training, as well as general environmental consulting. As an expert witness, Mr. Ferguson has prepared reports and given expert testimony in matters related to cost recovery of environmental damages, criminal insurance fraud, due diligence, Toxic Substances Control Act (TSCA) polychlorinated biphenyls (PCBs) remediation, professional negligence, and the standard of care at the time the ...

Glenville, New York

Civil Engineering, Structural Engineering - Building, Highway, Bridge, Structures, pavement, trench, underground, drainage, traffic engineering, temporary traffic control, building envelope, roof, trip and fall, erosion, sewerage, directional boring, soils, trusses, construction vibration, groundwater

Over 1,000 Expert Opinions. Chief Senior Forensic Engineer with a background in Design, Inspection and Construction of Buildings, Bridges, Heavy Highway, and Field Engineering for State Government, Municipal, Institutional, Commercial, and Private sectors; including towers, culverts, and underground infrastructure related to Traditional Civil Engineering and Forensic Engineering and Forensic Investigation. Board-Certified Diplomate Senior Forensic Engineer through the National Academy of Forensic Engineers, Diplomate Building Inspection Engineer and Certified Structural Engineer through the former Structural Engineering Certification Board (2008-2022). Licensed to practice engineering in CT, FL, MA, NC, NH, NJ, NY, OH, PA, VA, VT, WV, and the USVI. Provided Expert Testimony in over dozens of cases and Expert Opinions in over hundreds of cases involving wrongful death, injury, and property damage.

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...

Philadelphia Area, Pennsylvania

Environmental, Engineering - Hydrology, Stormwater Management, Sewers, Sewer Systems, Wastewater, Sanitary Sewage, Water, Septic Systems, Flooding, Groundwater, Hydrogeology, Drainage, Mold, Wells, Runoff, Backups, Wastewater Treatment, Utility, Construction, Maintenance

Nationwide experience as hydrologist, environmental engineer, and civil engineer, including for design, contamination, pollution, FOG/grease trap, sinkhole, grading, hydraulics, pumping, water quality, storm sewer, drinking water, water distribution, water treatment, dam, regulations, Standard of Care, waste management, erosion, soil, air quality, water main, detention, hazardous waste, spill, sedimentation, wetland, floodplain, toxicity, remediation, health and safety, modeling, odor, combined sewer, overflow, aquifer, hydraulic fracturing, hydroplaning, and metering. Forensic cases for Mr. Dutill have comprised state and federal courts. As indicated in feedback from attorneys on expert witness cases, some of the strengths of Mr. Dutill include understandable guidance, responsiveness, timeliness, communication, effective report writing, strong testimony (including on cross), efficiency, organization, and assistance with framing case issues. Approximately 45% of his cases have be...

Lancaster, Pennsylvania

Environmental, Hydrology - sinkhole, groundwater, landslide, drilling, hydrogeology, rockfall, karst, vibration, blast, earthquake, contamination, pipeline, fracking, water, erosion, construction, stormwater, physics, leak, cave

Dr. Bechtel is geophysicist/geologist, and a world-renowned expert on sinkholes. But not just sinkholes; bedrock conditions, caves, water pollution, and all issues related to karst terranes. Dr. Bechtel has 25+ years of experience in the engineering/environmental industry, as well as faculty positions at Franklin & Marshall College, the University of Memphis and the University of Pennsylvania, and is an appointed member of the International Karst Commission. Dr. Bechtel has been an expert in dozens of sinkole or karst-related cases - often related to causes of sinkholes and/or water problems. Dr. Bechtel also has expertise and courtroom experience in Unconventional Oil & Gas, hydraulic fracturing (fracking), and fracking-industry-related earthquakes, horizontal directional drilling (HDD), as well as all fields of seismology, seismic hazards, vibration monitoring and analysis, subsidence, soil creep, landslides, rockfalls, non-destructive evaluation of earthen dams and levees, subsu...

Houston, Texas

Environmental, Industrial Hygiene - asbestos, mold, soil, groundwater, remediation, indoor air quality, industrial hygiene, chemical spills, fire, hazardous, waste, lead, vapor, industrial, hygiene, disaster response, oil & gas, storage tanks, radiation, geology

35+ yrs. diverse experience, education, credentials & licensing in geology, biology, remediation, & hazardous materials (HAZMAT) management. For the built environment, I hold multiple credentials in asbestos, lead, indoor air quality, industrial hygiene, mold & bioaerosols, sick buildings, vapor intrusion, OSHA worker & evaluation of operational compliance & occupant hazards. I lecture & teach for UT Systems, JLL, Wal-Mart, major lenders & underwriters. I practice environmental & industrial hygiene at TGE Resources, Inc., (Houston, TX), the firm I founded 32+ years ago. I am routinely retained across my diverse field - over 100 times with near equal defense & plaintiff representation. I have large case experience, served in class action litigation, & public and private sector suits. I am an expert in environmental geoscience & HAZMAT releases & spills within the transportation, bulk fuel, lube, and chemical industries. I plan remediation strategies, actively cleanup & oversee wor...