Principals

Bryan A. Stirrat. P.E. – President
Bryan has 35 years of experience in the solid waste and environmental engineering industries. He was principal consulting engineer for the first US EPA approved RCRA closure of a Class I, Hazardous Waste Landfill in the western U.S. (BKK Landfill). He served on the California Integrated Waste Management Board’s advisory committee on the closure of municipal solid waste facilities, and was a member of the Governor’s Task Force on Solid Waste. Throughout his career, Bryan has worked closely with public and private waste management organizations in the planning, design, and implementation of major solid waste facility development programs. He is a registered civil engineer in California, Arizona, New Mexico, and Nevada. Bryan has MS degrees in environmental engineering and petroleum engineering from the University of Southern California, and a BS in civil engineering from the University of Missouri-Rolla.

Christine Arbogast, P.E. – Vice President, Solid Waste
Christine has more than 20 years of solid waste planning and engineering experience. A BAS employee since 1989, Christine has helped public agencies throughout the west implement strategies to more effectively develop their solid waste management infrastructure. Throughout her career, Christine has effectively coordinated the engineering, design, permitting, and operational aspects of solid waste facility development and closure projects, and has represented clients before local, state and federal regulatory agencies. Christine is a California Registered Civil Engineer, and has a bachelor of science in civil engineering from California State University, Pomona.

Paul Willman – Principal Solid Waste Planning
Mr. Willman has 20 years of solid waste regulatory compliance and environmental protection planning experience. He has worked for an international solid waste management company (Waste Management, Inc.), a California regulatory agency (California Integrated Waste Management Board), and has been responsible for managing implementation of corporate environmental protection programs for 50 landfills, transfer stations, and collection facilities. He has a strong understanding of solid waste facility permitting issues from the perspective of both landfill operators and the regulatory community. Paul holds a bachelor of science in environmental science from the University of California, Riverside, and is a certified hazardous materials manager.

G.E. Andraos – President, Methane Gas Group
Gus has 26 years of gas processing experience, including more than 23 years of experience in landfill gas engineering. He has been responsible for the design and implementation of gas management systems at more than 75 landfill sites. Gus has directed feasibility studies evaluating the use of landfill gas for the generation of energy, and designed landfill gas extraction and conveyance systems, flare stations, and energy recovery systems. In addition, Gus has been instrumental in the development of innovative design processes, which have become standards in the landfill gas industry. He holds a BS in chemical engineering from California State University, Northridge.

Rich Huffmire – Vice President, Construction
Rich has more than 35 years of construction experience, including more than 20 years overseeing construction projects at solid waste facilities. He has been construction manager for lined cell development, drainage system construction, solid waste facility infrastructure improvement, and landfill closure projects throughout the west. Rich has coordinated construction management field staff, geotechnical and geosynthetic CQA staff, and been responsible for maintaining comprehensive project documentation. Rich provides constructability reviews of BAS designs. In addition, he has provided litigation support in defending landfill owners against claims made by construction contractors.

Greg Acosta, P.E. – Vice President, Environmental Services
Greg has 19 years experience managing environmental site investigation and remediation projects. This has included implementation of Remedial Investigations / Feasibility Studies, Remedial Action Plans, and other environmental studies. Sites investigated have included former oilfield properties, industrial manufacturing facilities, municipal burn dumps and landfills, and Brownfields sites. Greg has worked closely with private developers and public redevelopment agencies to implement innovative strategies to clean-up impacted properties for commercial and residential redevelopment. Greg is a California Registered Civil Engineer; has an MS in Environmental Engineering from the University of California, Los Angeles; and a BS in Civil Engineering from California State Polytechnic University, Pomona.