Through an excellent working relationship with the Department of Toxic Substance Control, we worked through an intensive investigative phase, ultimately resulting in source identification and completion of a successful 1,200-ton excavation that produced no impact on the surrounding community.
This 6.68 acre site, now a vacant lot, was formerly occupied and operated by multiple manufacturing companies that processed various products, including acetylene, lime, air products, and refined high-end lubricating oils for use in a variety of industrial processes. We determined the nature and extent of hydrocarbon and solvent impacts, and completed remediation on an accelerated schedule — from 18 months to less than 9 months — due to the pending sale of the property and subsequent redevelopment. We prepared numerous work plans and reports; CEQA documents, community profile work and a quality assurance project plan; a final site characterization report; a comprehensive human health risk assessment, and a remedial action work plan. Our team completed field work in two phases of soil gas surveys, with 134 soil gas locations and sample collection at 5 and 15 feet below ground surface, 54 soil borings to 25 feet below ground surface, and collection of groundwater samples.