Former Dry Cleaning Facility Voluntary Cleanup Program (VCP) Case Management and Litigation Support

Client: Confidential

Project: VCP Case Management / Litigation Support

VCP Case in Oklahoma County, OK

Project Characteristics: Ensolum, LLC (Ensolum) Consultants provided comprehensive environmental services related to a site impacted by historic dry-cleaning operations. In addition to managing the regulatory requirements set by the Oklahoma Department of Environmental Quality (ODEQ), Ensolum additionally provided litigation support services concurrently throughout all phases of the project.

VCP Case Management: 

Ensolum conducted site characterization of the groundwater and vapor plumes with the installation of 42 monitoring wells and 18 soil-gas vapor monitoring points, respectively. Based on data collected throughout all site investigations, an approximate 1,200’ by 600’ chlorinated solvent groundwater plume was fully characterized for magnitude and extent. Additionally, vapor intrusion (VI) pathway sampling (e.g., sub-slab, indoor air) was conducted on sensitive receptors to evaluate the potential for VI at these locations. To date, two (2) vapor mitigation systems (VMSs) have been installed on impacted properties where VI pathways were identified.

A Remedial Investigation/Feasibility Study (RI/FS) was submitted to ODEQ which detailed all site activities and summarized multiple pilot/treatability studies that had been completed throughout the project. The FS screened numerous remedial technologies for the site based on multiple factors, such as:  effectiveness, implementability, and future costs. A DPE system was installed at the site and continues to operate and reduce the contaminant mass near the source area.

Litigation Support:

Ensolum provided extensive litigation support for the purpose of assisting the client in their legal arguments to all defending parties. Due to the nature of the litigation proceedings, all environmental services conducted were subject to adhere to the standards and procedures set forth in United States Environmental Protection Agency’s (USEPA’s) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) guidance documents for cost recovery purposes (i.e., Risk Assessment Guidance for Superfund [RAGS]).

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