Project:
Former Electronics Manufacturing Facility
Bottom Line: Helped design and implement an electrical resistance heating system to 130 feet that removed 32,000 pounds of VOCs. Designed and implemented PDB validation study that saved the client up to $16,000 annually.
Summary of Project
The site formerly contained several structures housing offices, low-level radiation exposure testing, hazardous materials storage, and semiconductor manufacturing. From 1959 to the 1980’s, compounds used or generated at the site included waste solvents and oils stored in five USTs. The site structures were demolished from 1994 through 1996. DNAPL was first encountered in 2003.
- Designed and implemented a multi-phase DNAPL assessment program using rotosonic drilling to approximately 130 feet, continuous core sampling, and DNAPL-reactive tape. Data obtained was used to design an electrical resistance heating system that removed over 32,000 pounds of VOCS.
- Prepared a spill prevention and control plan for operation of a soil and groundwater remediation system.
- Classified various waste streams (both hazardous and non-hazardous waste) including investigation-derived waste and wastewater from a boiler, cooling tower, condenser, and decanter. Arranged for proper storage, labeling, marking, manifest preparation, and offsite treatment or disposal.
- Provided litigation support in insurance claim including expert witness report and deposition.
- Investigated the extent of soil impacted by VOCs, aromatic hydrocarbons, and fuel oil to 65 feet below grade. Investigated the extent of VOC-impacted groundwater approximately 3,000 feet off site to a depth of 135 feet. Used Hydropunch and Simulprobe sampling to identify optimal well placement.
- Designed and performed a passive diffusion bag field sampling and technical evaluation program. Compared PDB data to data collected using low-flow and traditional purge-and-bail sampling techniques. Successfully presented PDB data evaluation to the RWQCB; obtained agency approval to convert to PDB sampling.
- Performing semiannual groundwater monitoring of up to 33 wells and providing hydrogeologic data evaluation.