EPA maintains that there are about 595,000 active UST’s at about 214,000 sites in the United States. On November 18, 2011, the Federal Register published Revising Underground Storage Tank Regulations—Revisions to Existing Requirements and New Requirements for Secondary Containment and Operator Training, that would update and expand the Environmental Protection Agency’s original 1988 regulations for underground storage tanks (UST’s).
In view of EPA’s and state regulatory agencies’ claims of thousands of petroleum and hazardous chemical leaks each year, the Federal government has proposed stronger rules for underground storage tanks, with new requirements for containment, training, codes of practice and technologies.
The proposed rule comes in the wake of the March 2011 release of EPA’s Leaking Underground Storage Tank Corrective Action Compendium, which provides state and Federal leaking underground storage tank remediation specialists with resources and information.
The proposed new rule includes:
•New secondary containment and interstitial monitoring requirements for new and replaced tanks and piping;
•A requirement for installation of under-dispenser containment for new dispenser systems;
•Requirements for periodic spill, overfill, secondary containment, and release detection testing, along with periodic walkthrough inspections to prevent and quickly detect releases;
•Ending current exemptions for UST systems with field-constructed tanks. These 239 or so tanks, most owned by the Department of Defense, would now be subject to the requirements of 40 CFR part 280, regarding design, construction, installation and notification, operating requirements, release detection and other provisions. Ranging in size from 20,000 to more than two million gallons, these tanks pose “a substantial threat to human health and the environment,” according to EPA;
•Ending similar exemptions for wastewater treatment tank systems that are not part of a wastewater treatment facility regulated under § 402 or 307(b) of the Clean Water Act. EPA exempted these and other tank categories from leak detection requirements in 1988 because monitoring technology for such systems was not available then, but it is now, according to EPA.
•Allowing for the use of new technologies in tank cladding and jacketing, non-corrodible piping, and operations and detections. The 1988 rule allows these tank technologies: coated and cathodically protected steel; fiberglass reinforced plastic; steel-fiberglass reinforced-plastic composite; and metal without additional corrosion protection, provided that a corrosion expert determines the site is not corrosive enough to cause a release from corrosion during the tank’s life. These would remain unchanged under the new rule.
•New training requirements for three UST system operator classes. Depending on the class, the training would emphasize spill prevention, system operation, corrosion protection, detection and emergency response.
•New training requirements for three UST system operator classes. Depending on the class, the training would emphasize spill prevention, system operation, corrosion protection, detection and emergency response.
EPA's proposal (all 89 pages) would affect a number of industries that use UST’s, including transportation (air, water, truck, transit, pipeline and airport operations), communications and utilities (wired telecommunications carriers and electric power generation, transmission and distribution).
The proposed regulations would apply to tanks that hold petroleum or hazardous chemicals, which are regulated under Subtitle I of the Resource Conservation and Recovery Act. They would not affect UST’s containing hazardous waste, which are regulated under RCRA Subtitle C.