# Approval of Iowa's State Implementation Plan (SIP); Definition of Greenhouse Gas and Prevention of Significant Deterioration (PSD) Plantwide Applicability Limits (PALs) Revisions
> **Rule** · Direct final rule. · Published 2016-06-17 · Effective 2016-08-16 · 81 FR 39585
## Document
- **Document number:** 2016-14282
- **Category:** air-emissions
- **Federal Register citation:** 81 FR 39585
- **CFR reference:** 40 CFR 52
- **Publication date:** 2016-06-17
- **Effective date:** 2016-08-16
- **State:** IA
- **EPA docket:** EPA-R07-OAR-2016-0280
## Abstract

The Environmental Protection Agency (EPA) is approving two SIP revisions submitted by the State of Iowa. First, EPA is approving the definition of greenhouse gas, which will make the state's definition consistent with the Federal definition, and add greenhouse gases to emission inventory requirements. Second, EPA is approving Iowa's revision to its Prevention of Significant Deterioration (PSD) program, specifically to the definition of "subject to regulation," and to adopt by reference the most recent Federal plantwide applicability limitations (PALs) provisions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/06/17/2016-14282/approval-of-iowas-state-implementation-plan-sip-definition-of-greenhouse-gas-and-prevention-of)
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