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 The United States Department of Energy (DOE) considers salt dome cavern storage safer than other storage methods for hydrocarbons. Salt dome caverns have been used for more than 60 years to store oil, natural gas and other hydrocarbons. Salt dome caverns designed, built and operated specifically for natural gas storage have a particularly stellar safety record. There have been no incidents of fire, accidental releases or explosions in caverns developed specifically for natural gas storage.
Jefferson Island Storage and Hub (JISH) facilities are closely examined by regulators for construction and operations. Before construction on the cavern expansion can begin, it is necessary for local, state and federal agencies to approve JISH’s applications or permits to build and complete the project. Learn about our regulators.
AGL Resources meets, and in most cases exceeds, federal and state safety regulatory guidelines.
 JISH also meets all required regulatory environmental laws and standards. Operations at JISH have a very small environmental footprint, helping to ensure that the facility does not impact the surrounding area in an adverse manner.
Air permits govern the natural gas-fired components at the site, keeping air emissions low. JISH has installed upgraded compressor engine ignition and control systems and exhaust treatment systems to limit the amount of air emissions from the site.
The site does not generate hazardous waste and recycles all of its used oil using firms licensed by regulatory agencies. All solid waste is disposed in industrial landfills with “household-type waste” going to local landfills.
 All vessels containing oil or antifreeze components are bermed to prevent any release or leak from entering the environment. Stormwater at the site is channeled away from operating areas and directed off the site to receiving water bodies in a manner to prevent erosion. Stormwater contained in bermed areas is checked to ensure no materials are present prior to being discharged.
All brine produced from cavern operations is injected into an existing saltwater formation thousands of feet below the Chicot Aquifer, which provides fresh water for the area. The wells were drilled and cased to prevent brine from contacting fresh water.
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