I have over 30 years of experience in environmental policy, contaminant assessment and remediation. I have spent nine years with the U.S. EPA in the RCRA and Superfund programs and served as EPA’s Senior Science Policy Advisor in the Western Regional Office where he identified emerging threats to groundwater from perchlorate and MTBE. While with EPA, I also served as a Senior Hydrogeologist in the oversight of the assessment of seven major military facilities undergoing base closure. I led numerous enforcement actions under provisions of the Resource Conservation and Recovery Act (RCRA) and directed efforts to improve hydrogeologic characterization and water quality monitoring. For the past 15 years, as a founding partner with SWAPE, I have developed extensive client relationships and has managed complex projects that include consultation as an expert witness and a regulatory specialist, and a manager of projects ranging from industrial stormwater compliance to CEQA review of impacts from hazardous waste, air quality and greenhouse gas emissions. My expertise consists of geologic and hydrogeologic characterization, industrial storm water compliance, CEQA review, investigation, and remediation strategies. I am highly involved with environmental policy concerning hazardous waste, water resources, water quality, air quality, greenhouse gas emissions, and geologic hazards. I am also knowledgeable in perchlorate contamination, estimation of clean-up costs, and impediments to intrinsic remediation. I have over 15 years expert witness experience.