Off-Site Waste and Recovery Operations (OSWRO): National Emission Standards for Hazardous Air Pollutants (NESHAP)
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Rule Summary
The 2015 final rule implements the Clean Air Act (CAA) section 112(d) to control hazardous air pollutants (HAP) emissions at major sources that receive certain wastes, used oil, and used solvents from off-site locations for storage, treatment, recovery, or disposal.
Off-Site Waste and Recovery Operations (OSWRO) facilities subject to the final rule are required to control emissions of organic HAP by meeting emissions limitations and work practice standards reflecting the application of maximum achievable control technology (MACT) and amendments made as a result of the risk and technology review (RTR). The final rule applies to OSWRO affected sources which includes tanks, surface impoundments, containers, oil- water separators, individual drain systems and other material conveyance systems, process vents, and equipment leaks.
In May 2015 the EPA was petitioned for reconsideration of certain aspects of the final rule by Eastman Chemical Company and the American Chemistry Council. The EPA granted reconsideration of the issue related to pressure relief devices on February 8, 2016, and denied reconsideration of the issue related to leak detection and repair (LDAR) connector monitoring requirements. The denial was published in the Federal Register on May 16, 2016 (81 FR 30182).
Rule History
01/29/2018 - Off-Site Waste and Recovery Operations (OSWRO): National Emission Standards for Hazardous Air Pollutants - Final Amendments (pdf) (240 KB)
08/7/2017 – Off-Site Waste and Recovery Operations (OSWRO): National Emission Standards for Hazardous Air Pollutants (NESHAP) Proposed Amendments (pdf) (277 KB)
05/16/2016 – Action Denying a Petition for Reconsideration (pdf) (233 KB)
03/18/2015 – Final Rule (March 2015) (pdf) (407 KB)
07/02/2014 – Proposed Rule (July 2014) (pdf) (456 KB)
01/08/2001 – Final Rule; Technical Corrections and Amendments (pdf) (250 KB)
07/20/1999 – Proposed Rule (July 1999) (pdf) (104 KB) & Direct Final Rule (July 1999) (pdf) (452 KB)
07/01/1996 – Final Rule (July 1996) (pdf) (558 KB)
10/13/1994 – Proposed Rule (October 1994) (pdf)
Additional Resources
2015 Petition for Reconsideration for Off-Site Waste and Recovery Operations Documents
View the supporting documents in the docket folder to find additional related documents to this rule.
Related Rules
National Emission Standards for Tanks - Level 1 (pdf) (263 KB)
National Emission Standards for Containers (pdf) (292 KB)
National Emission Standards for Surface Impoundments (pdf) (270 KB)
National Emission Standards for Individual Drain Systems (pdf) (262 KB)