# Approval and Promulgation of State Plans for Designated Facilities and Pollutants: Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming; Negative Declarations
> **Rule** · Final rule. · Published 2017-09-26 · Effective 2017-10-26 · 82 FR 44738
## Document
- **Document number:** 2017-20595
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 44738
- **CFR reference:** 40 CFR 62
- **Publication date:** 2017-09-26
- **Effective date:** 2017-10-26
- **State:** CO
- **EPA docket:** EPA-R08-OAR-2017-0171
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve 20 negative declarations for four designated facility classes in all Region 8 states. First, the EPA is approving negative declarations from Colorado, Montana, North Dakota, South Dakota and Wyoming for existing small municipal waste combustor (MWC) units. Second, the EPA is approving negative declarations from Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming for existing large MWC units. Third, the EPA is approving negative declarations from Montana, South Dakota, Utah and Wyoming for existing commercial and industrial solid waste incineration (CISWI) units. Fourth, the EPA is approving negative declarations from Montana, North Dakota, South Dakota, Utah and Wyoming for existing other solid waste incineration (OSWI) units. Each of the negative declaration letters approved in this final rulemaking action is a certified statement from the issuing state that there are no existing designated facilities of the source category specified in the negative declaration, within the jurisdiction of that state, which would require the development of a Clean Air Act (CAA) section 111(d)/129 state plan. These approved negative declarations will serve in lieu of a state plan unless a previously unknown facility falling under these particular emissions guidelines is identified and development of a state plan becomes necessary.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/09/26/2017-20595/approval-and-promulgation-of-state-plans-for-designated-facilities-and-pollutants-colorado-montana)
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