William Locke, P.E.
President
William Locke, P.E.'s headshot

Mr. William Locke is a hydrologist and registered civil engineer with more than 25 years of experience in environmental investigation, fate and transport assessments, remedy analysis and selection, and regulatory affairs. He specializes in designing physical and chemical investigations of complex environmental systems, including soil, groundwater, sediments, surface water, and biota. He advises a broad range of clients on scientific and engineering issues, regulatory strategy, and management of environmental assets and liabilities. Mr. Locke has overseen and contributed to numerous remedial investigations, risk assessments, engineering feasibility studies, and fate and transport evaluations conducted under CERCLA, RCRA, and state-led environmental cleanup programs. He has also provided expert support for environmental litigation matters and natural resource damage assessments (NRDAs).

Mr. Locke is well versed in the environmental behavior of a wide array of organic chemicals (e.g., dioxins and furans, PCBs, PAHs, and chlorinated solvents) and inorganic chemicals (e.g., cyanide, arsenic, cadmium, lead, and other metals). He has designed and executed technical studies to differentiate site-related releases from natural and anthropogenic background chemical concentrations in soil, water, and sediments. Mr. Locke has evaluated groundwater-sediment-surface water interactions at several sites across the U.S., where he has developed and successfully implemented a multiple-lines-of-evidence approach for differentiating impacts of historical releases to sediments from those caused by migration of upland groundwater plumes. Mr. Locke has also developed analytical and numerical models to assess chemical fate and transport in groundwater and surface water systems, predict the effects of mining on water quality and quantity, analyze the feasibility of environmental remediation projects, and address questions related to water resources quantity and quality.