EPA OIG 23-P-0030: The EPA Should Enhance Oversight to Ensure that All Refineries Comply with the Benzene Fenceline Monitoring Regulations
The EPA Should Enhance Oversight to Ensure that All Refineries Comply with the Benzene Fenceline Monitoring Regulations September 6, 2023 | Report No. 23-P-0030 Report Contributors Kathryn Burns Tina Eastman (formerly Lovingood) Erica Hauck Xiang (Sharon) Liu Andrea Martinez Pedro Perez Abbreviations C.F.R. Code of Federal Regulations EPA U.S. Environmental Protection Agency µg/m3 micrograms per cubic meter OECA Office of Enforcement and Compliance Assurance OIG Office of Inspector General SSMP Site-Specific Monitoring Plan Key Definitions Action level The ambient concentration above which a refinery is required to take corrective action under the benzene fenceline monitoring requirements. The action level is 9 micrograms per cubic meter on a rolling annual average basis. Delta c The difference between the value of a refinery’s highest individual monitor and the value of a refinery’s lowest individual monitor for a given two-week sampling period. …
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