Project Scope
ESE Partners managed a ~$500,000 project involving the enrollment of the site into the TCEQ Leaking Petroleum Storage Tank (LPST) program. Remediation technologies included in-situ & ex-situ chemical oxidation using persulfate, mobile dual phase extraction (MDPE), downhole monitoring well NAPL removal/skimming, groundwater monitoring natural attenuation, dig/haul activities, full deconstruction of the aboveground storage tank (AST) system, and installation of the new AST fuel system.
Approach
This project required careful navigation of both the client relationship and the existing pollution insurance policy simultaneously with TCEQ rules, regulations, and requests for additional information within the cleanup program. Environmental challenges included soil impacts above health-based standards requiring treatment and/or removal, more than a three (3) foot thickness of non-aqueous phase liquid (NAPL; diesel fuel; free product) overlying the shallow groundwater bearing unit at project initiation and persistence of pore-space NAPL following treatment of environmental media. A highly technical demonstration of the site’s hydrogeology and recoverable NAPL was ultimately necessary to satisfy regulatory requirements.
Benefits
ESE secured LPST closure to commercial/industrial closure criteria, successfully resolving both the regulatory and client risk considerations. Additionally, the Site continued to be revenue generating for the full duration cleanup program activities were conducted.
