Title 42 › Chapter CHAPTER 85— - AIR POLLUTION PREVENTION AND CONTROL › Subchapter SUBCHAPTER IV–A— - ACID DEPOSITION CONTROL › § 7651k
Owners and operators must install and run continuous emissions monitoring systems (CEMS) on every affected unit and must check that the data for sulfur dioxide, nitrogen oxides, smoke/opacity, and stack flow are accurate. The Administrator must write rules within 18 months after November 15, 1990 that say how CEMS must work, what records and reports are needed, and what alternative monitoring systems are allowed if they give the same quality of information. If several units share one stack, you do not need a separate monitor for each unit, but you must gather enough information to decide compliance for each unit. All affected units must have CEMS, keep records, and report under those rules no later than 36 months after November 15, 1990; units not yet covered had to comply by January 1, 1995, and new units must comply when they start commercial operation. If required monitoring data are missing and the owner cannot give acceptable emissions information, the Administrator will treat the unit as uncontrolled for that whole period and set rules to calculate emissions. The owner can be charged excess-emission fees and required offsets under section 7651j, and those fees do not remove other penalties. It is illegal to operate without following these rules.
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The Public Health and Welfare — Source: USLM XML via OLRC
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Citation
42 U.S.C. § 7651k
Title 42 — The Public Health and Welfare
Last Updated
Apr 6, 2026
Release point: 119-73