# Revisions to Appendix P to 40 CFR Part 51, Concerning Minimum Emission Reporting Requirements in SIPs
> **Rule** · Final rule. · Published 2020-08-14 · Effective 2020-09-14 · 85 FR 49596
## Document
- **Document number:** 2020-15668
- **Category:** other
- **Federal Register citation:** 85 FR 49596
- **CFR reference:** 40 CFR 51
- **Publication date:** 2020-08-14
- **Effective date:** 2020-09-14
- **EPA docket:** EPA-HQ-OAR-2018-0633
## Abstract

The Environmental Protection Agency (EPA) is amending a regulation that specifies what State Implementation Plans (SIPs) must require of sources in four categories with respect to continuous emission monitoring, recording, and reporting. Specifically, the amendments revise provisions that specify the minimum frequency for submitting reports of excess emissions that must be included in SIPs. The minimum frequency is being revised from "for each calendar quarter" to "twice per year at 6-month intervals." The four source categories covered are: Fossil fuel-fired steam generators; fluid bed catalytic cracking unit catalyst regenerators at petroleum refineries; sulfuric acid plants; and nitric acid plants. As a result of this revision, states may choose to revise their SIPs to reflect the revised minimum frequency specified in our regulations. This action also corrects an erroneous cross-reference in our regulations.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/08/14/2020-15668/revisions-to-appendix-p-to-40-cfr-part-51-concerning-minimum-emission-reporting-requirements-in-sips)
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