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U.S. Department of Energy
Office of Scientific and Technical Information

Opacity provisions: background information for promulgated amendments

Technical Report ·
OSTI ID:6014358
On July 31, 1984, the US Environmental Protection Agency (EPA) proposed a requirement for owners and operators of affected facilities subject to opacity standards in 40 CFR Part 60 to conduct opacity observations, and record and report the opacity of emissions during each performance test as required by Section 114 of the Clean Air Act, as amended, and was based on the Administrator's determination that the recordkeeping and reporting was necessary to demonstrate compliance with the respective opacity standards. The data would also be used during 4-year reviews of standards of performance for new stationary sources so that EPA could decide whether revisions to the respective opacity standards were necessary. The proposed opacity provisions were published in the Federal Register (49 FR 30676). A hearing was not requested. Comments were received from industry, state and local air pollution control agencies, and a law firm representing members of the Utility Air Regulatory Group (UARG). The summary of comments and responses serves as the basis for the revisions made to the opacity provisions between proposal and promulgation.
Research Organization:
Environmental Protection Agency, Research Triangle Park, NC (USA). Office of Air Quality Planning and Standards
OSTI ID:
6014358
Report Number(s):
EPA-450/3-85-013; ON: TI86900480
Country of Publication:
United States
Language:
English