Principal Geologists

Frederick E. Clark, P.G.

Mr. Clark has over 25 years of professional experience in the environmental field as a hydrogeologist, program and project manager, operations manager, remediation design geologist, and expert witness. He has been responsible for the management, coordination, scheduling, and budget control of hydrogeologic studies, remedial investigations, remediation feasibility engineering design, soil and groundwater remediation implementation, and construction activities. He is experienced in the areas of regulatory negotiations, legal and litigation support, geological interpretation, remediation feasibility evaluations, closure strategies, and RCRA and CERCLA . Mr. Clark has been directly responsible for numerous project closures using various methods of remediation for clients such as ARCO Products Company, Chevron USA Products Company, UNOCAL Corporation, Union Carbide, Safety-Kleen, Thrifty Oil, Cal Trans, and other clients.

Karl D. Bowers, P.G.

Mr. Bowers is a Professional Geologist in the State of California with 18 years of experience in the environmental field. He has specialized in the assessment, remediation, and program management of petroleum hydrocarbon facilities throughout California, including gasoline service stations, tank farms and refineries. Mr. Bowers has managed all phases of assessment through remediation to closure, personally implemented pilot testing programs, and overseen engineering design, installation, and operations of numerous types of remedial applications. He currently manages several key projects involving MtBE delineation and remediation as part of water supply well and resevoir protection. Mr. Bowers has successfully negotiated closure on numerous petroleum sites throughout Southern California using various techniques, including detailed implementation of a CCR Title 23 Assessment of Impacts to identify contaminant transport mechanisms and potential risk to sensitive receptors.

Peter A. Fuller

Mr. Fuller has over 20 years of experience in environmental project management with both small and large companies. He is a licensed General Engineer Contractor in the State of California and has worked for major environmental service companies and as the environmental affairs manager for an international plastics machinery manufacturer. Mr. Fuller's work focused on aquifer and surface water restoration from impacts of petroleum hydrocarbons, VOCs, and metals. Mr. Fuller has extensive experience in program and project level management of environmental and regulatory compliance programs for major mining, industrial, and government clients including NCH Corporation, Kvaerner, Shell, ARCO, Texaco, and the U.S. Army Corps of Engineers.

Neil Irish, Vice President

Mr. Neil Irish, Principal Geologist, is a Professional Geologist in the State of California with 23 years of experience in environmental project management and remediation. Mr. Irish has successfully completed projects at sites throughout California, and across the United States and internationally. Mr. Irish has a wide-ranging background, having supported both commercial, industrial, and Department of Defense customers. Mr. Irish has extensive experience conducting planned environmental restoration projects, as well as conducting numerous immediate response actions. Mr. Irish has worked on project types involving tank farms, refineries, fuel wharfs, terminals, pipelines, manufacturing facilities, metal plating operations, solvent disposal sites, oil fields, and retail service stations. Mr. Irish has negotiated no-action RBCA closure of impacted sites, including the first such closure of a DOD site in California. Mr. Irish has a strong technical background, having managed the installation and operation of numerous multi-media remediation systems at sites across the US. His past and present clients include the Defense Energy Support Center, Sunoco, Chevron, ARCO, Shell Oil, AFCEE, the US Navy, and Army Corp of Engineers.

Khaled Rahman, P.G., C.HG.

Mr. Rahman has over 20 years of experience in environmental project and program management. He is a Professional Geologist and Certified Hydrogeologist and holds both a B.A. and an MS degree in Geology. He has experience in all aspects of investigation, remediation, management, and closure of sites impacted by petroleum hydrocarbons, methyl tert-butyl ether (MTBE) and chlorinated solvents. His has coordinated numerous hydrogeologic investigations, soil and groundwater remediation projects and prepared monitoring reports for sites in the San Francisco Bay, Central Coast, Central Valley and Santa Ana regions of California, as well as Washington and North Carolina. He has conducted environmental activities in accordance with regulatory guidelines, including Orders issued by the RWQCB and DTSC; negotiated cleanup goals and case closure.

Kent R. Reynolds

Mr. Reynolds has over 29 years of experience in the environmental field involving contaminated industrial sites and waste disposal facilities. His work experience includes the design and construction of remediation systems, regulatory liaison and negotiation, and the management and implementation of remedial actions. His two decades of experience includes: Phase I and II environmental site assessments; remedial investigation/feasibility studies; identification and negotiation of appropriate cleanup criteria; development and implementation of remedial approaches; and regulatory compliance. Mr. Reynolds has extensive experience in identifying and providing clients with technically defensible and cost effective remediation alternatives with emphasis on limiting future liability and costs. His extensive experience with the various State of California Regional Water Quality Control Boards, Department of Toxic Substances Control (DTSC), and various municipal agencies in Northern and Southern California results in negotiating least cost remedial and compliance programs.

James G. Ritchie, P.G.

Mr. Ritchie is a registered professional geologist in California and Washington, and has 30 years of professional experience, including 25 years in Northern California.  His experience covers the range of environmental programs and projects including property transaction and development support, subsurface investigation, remediation, and operation, maintenance and monitoring (OM&M) of treatment systems, mediation and litigation support, emergency response management, regulatory agency negotiation, and site closure.  Mr. Ritchie has worked in a variety of settings, including landfills, refineries, industrial plants, agricultural sites, retail service stations, and properties affected by chemicals released elsewhere.  His past experience also includes geothermal and petroleum exploration.  Mr. Ritchie specializes in characterizing subsurface environments and developing a better understanding of the subsurface stratigraphy and likely migration pathways (fate and transport) for released chemicals.

He has worked with public and private clients to develop solutions for property redevelopment using fixed pricing, risk management and transfer mechanisms, and innovative technologies to address properties affected by the spectrum of chemical constituents.  His work as a client advocate and his ability to work with multiple stakeholders toward a common goal has resulted in numerous case closures, case settlements and successful property transactions. 

Through his consistent and long standing work in the San Francisco Bay area, Mr. Ritchie has earned credibility with regulators and client alike and he is a welcome new resource for SGI clients, and our team.