This 12.25-acre facility manufactured fasteners for the aerospace industry. Soil and groundwater beneath the facility have been primarily impacted with volatile organic compounds (VOCs), total petroleum hydrocarbons, and some heavy metals. The VOCs groundwater plume is significant and has migrated offsite. Environmental investigations have been conducted at the site since 1991 and a Soil Vapor Extractions (SVE) system has been operating at the site since March 1999. The Site has nearly 650 soil vapor probes in 134 locations and a groundwater monitoring well network of 51 wells.
Initially, Genesis was brought into the fold to identify and locate historical insurance assets to assist LISI Aerospace with funding a potentially $40+M environmental liability. After identifying potentially over $100M in historical insurance asset, Genesis was subsequently retained to comply with an RWQCB issued regulatory order to characterize a large soil vapor plume (primarily PCE, TCE, and their degradation products) and a mile plus long groundwater plume (PCE, TCE, perchlorate, 1,4-dioxane, hexavalent chromium, petroleum hydrocarbons).
Once retained, in addition to redesigning a more robust and suitable SVE system and extraction network and assuming groundwater monitoring program, Genesis conducted numerous extensive subsurface soil, soil vapor, vapor intrusion, and groundwater investigations throughout the regional plume. A sensitive receptor study was also conducted and an extensive Site Conceptual Model (SCM) was designed and conducted additional remedial pilot tests, soil vapor extraction pilot tests, air sparging pilot test, and In Situ Chemical Oxidation (ISCO) pilot studies in groundwater. Sophisticated groundwater fate and transport models were also included in the SCM.
Genesis reviewed and analyzed thousands of pages documents from public sources, Freedom of Information Act requests and lawsuit discovery with respect to the client’s contributions and contributions from off-site PRP sources soil vapor and groundwater contamination. Genesis subsequently developed technical arguments to support PRP lawsuits and regulatory agency orders, and an insurance coverage lawsuit and coordinated multiple large scale stake holder meeting with PRPs (attorneys/consultants), City attorneys/consultants, local and state regulators. Though no other Responsible Parties considered air sparging as a potential remedy, Genesis went forward with a very successful pilot test that will likely be implemented as part of the regional plume Remediation Action Plan (RAP) at a savings of millions to the final remedy.
