Weber, Hayes & Associates
120 Westgate Drive
Watsonville, CA 95076
Ph: (831) 722-3580
Fax: (831) 722-1159
SITE REMEDIATION: SOIL VAPOR EXTRACTION with AIR SPARGING AND
GROUNDWATER CIRCULATION WELLS
Project: Design, Installation and Operation of a Combined Soil and Groundwater Cleanup System Client: Gasoline Service Station Location: Los Osos, CA
Project Description:
An underground storage tank (UST) leak caused gasoline contamination of soil and groundwater beneath a gasoline service station. MTBE was found in a downgradient municipal water supply well. Weber, Hayes and Associates was retained to perform an expedited site assessment which included the installation of ten multi-level monitoring wells to define the three dimensional extent of the plume in the three-layer aquifer system. After removal of the leaking USTs, Weber, Hayes and Associates installed an innovative soil vapor extraction, air sparge, and groundwater circulation well cleanup system that has dramatically lowered concentrations of MTBE and other gasoline constituents in the dissolved plume.