Clean Air Act
The federal Clean Air Act (CAA) regulates pollutants that are discharged into the air. Click here to access links to select sections of the CAA at 42 U.S.C. § 7401 et seq. at the website maintained by the Legal Information Institute at Cornell University. Under the CAA, the federal Environmental Protection Agency (EPA) has established new source performance standards (NSPS) for volatile organic compounds emitted from petroleum liquid storage vessels and bulk gasoline terminals. NSPS establish technology-based standards that are dependant on the age of the petroleum storage vessel. 40 C.F.R. 60, Subpart K applies to storage vessels built or modified after June 11, 1973 and prior to May 19, 1978. 40 C.F.R.60, Subpart Ka applies to storage vessels built or modified after May 18, 1978 and prior to July 23, 1984. 40 C.F.R.60, Subpart Kb applies to storage vessels built or modified after July 23, 1984. 40 C.F.R. 60, Subpart XX applies to bulk gasoline terminals. The foregoing regulatory cites can be viewed via links to the United States Government Printing Office website. Just click on the hypertext.
New Source Performance Standards (NSPS)
NSPS technology-based standards generally require floating roofs and vapor recovery systems or equivalents for certain ASTs. The criteria become more stringent for newer petroleum storage vessels. Whether or not NSPS criteria will apply to an AST owner or operator depends on the storage capacity of the AST and the vapor pressure of the petroleum liquid stored. NSPS also require at least annual inspections of seal gaps, notification to EPA of commencement of construction and start-up, and monitoring.
For bulk gasoline terminals, NSPS require installation of vapor collection systems for tank trucks during product loading. Loadings may only be made into gasoline tank trucks tested for vapor tightness. In addition, NSPS require monthly liquid and vapor leak inspections. Inspection records must be kept at the terminal for at least two years. Any leaks must be repaired within fifteen days.