Storage Tank Services
Farmer Environmental Group’s underground storage tank (UST) and above-ground storage tank (AST) services support both property transaction screening and owner/operator regulatory compliance. UST/AST systems can be assessed for regulatory compliance and/or release determination by our qualified Geologists, Environmental Scientist, and Project Managers. Farmer Environmental Group is registered with the Texas Commission on Environmental Quality (TCEQ) as an LPST Corrective Action Specialist, and employs TCEQ registered Corrective Action Project Managers. Our services include:
- Review of owner/operator and regulatory authority records
- Storage tank system inspection and tightness/integrity testing
- Release determination by soil and groundwater assessment
- UST/AST closure
- Risk-Based Corrective Action assessment
Prior to 1988, USTs were not regulated by the US EPA or states. An assessment of historical UST facilities is frequently required because they were closed prior to regulations requiring assessment for release determination.
Farmer Environmental Group, in concert with select UST contractors, has upgraded or closed numerous storage tank systems. Regulations typically require a release assessment for the closure of a UST system by removal from the ground or abandonment in place. Representative samples of native soil and groundwater, if present, are obtained and analyzed for release determination. Excavated tank cavity fill is analyzed to determine appropriate disposition options, and generated waste including backfill material soil, water, product, USTs and ancillary equipment is properly disposed. The UST closure documentation is then submitted to the appropriate regulatory authority.
When a Detection is Found
In the event that a release is detected, an assessment of soil and groundwater, typically involving the installation of soil borings and monitor wells, may be required. The assessment should delineate the horizontal and vertical extent of the release to applicable regulatory limits. If COC concentrations exceed regulatory limits, Risk-Based Corrective Action (RBCA) principles can be employed. RBCA involves the evaluation of the potential exposure of sensitive receptors in the site vicinity. If the risk to human health and the environment is acceptable, no additional corrective action may be required.
In some instances the RBCA may indicate unacceptable risk, or the extent of COCs exceeding regulatory limits is sufficiently small to preclude RBCA, and corrective action/remediation (Phase III) is selected to achieve regulatory compliance. Farmer Environmental Group’s Geologist, Environmental Scientist, and Project Managers have the experience necessary to employ the most expedient and cost-effective remediation methods to achieve regulatory compliance.