Underground Storage Tanks

Underground Storage Tanks

Releases of petroleum and other hazardous substances from underground storage tanks (USTs) have been recognized as the most prevalent threats to groundwater quality throughout the country. Product releases at UST sites are caused by a variety of factors including tank failure, piping failure, equipment failure, spills and overfills.

In 1988, the USEPA issued comprehensive regulations (40 CFR Part 280) governing the operation of USTs containing regulated substances. These regulations outline specific requirements regarding the performance, installation, operation, closure, release detection/reporting, investigation, cleanup and financial responsibility associated with both existing tanks (tanks installed before December 22, 1988) and newly installed USTs (tanks installed after December 22, 1988). Former regulations required that all existing UST systems regulated by both state and federal law were either upgraded or closed by December 22, 1998. Specifically, tank owners/operators must have done one of the following:

• added leak detection, spill, overfill and corrosion
protection by December 22, 1998;

• closed the existing UST by December 22, 1998; or,

• replaced the closed, existing UST with a new UST
equipped with all required protection devices.

As mandated by RCRA, all 50 states have also implemented programs to monitor existing USTs, regulate new tank installations and handle leaking tanks. As a result, owners and operators must manage USTs more carefully and accountably than ever before.

AESI is a State Certified UST Closure and Subsurface Evaluation Company. In addition, AESI personnel are state certified by the Licensed Site Remediation Professional (LSRP) program and have assisted hundreds of companies in the management of their UST systems. We understand the technical, regulatory and administrative procedures encompassing UST management and remediation and provide all facets of the services required to assess, manage, remediate and close UST sites. Our broad based knowledge of federal, state and local regulations, together with our extensive hands-on experience in the UST compliance market, enables AESI to provide technically effective measures and to stand behind our work. AESI is dedicated to maintaining the critical balance between the operational needs and cash flow considerations of our clients against the requirements of the various regulatory agencies. We are responsive to our client’s needs and keep our clients well informed of issues and options that affect their decisions.

Our UST closure experience ranges from single tank closure programs, many of which require no corrective action, to multi-tank closures requiring corrective action involving both soil and groundwater. We have experience with both petroleum storage tanks and tanks containing other hazardous materials. When a UST discharge is discovered, our experience with state regulatory programs and policies, risk assessment methods, remedial action alternatives and regulatory agency negotiations provides us with the ability to deliver practical and reliable solutions to meet our clients’ objectives. Our UST compliance experience includes gaining state clearance for facilities where tanks have been improperly managed or closed, as well as developing comprehensive UST management programs designed to limit our client’s liability and potential remediation costs in the future.


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