# Approval and Promulgation of Air Quality Implementation Plans; Maryland; Permit To Construct Exemptions
> **Rule** · Direct final rule. · Published 2012-06-12 · Effective 2012-08-13 · 77 FR 34808
## Document
- **Document number:** 2012-14103
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 34808
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-06-12
- **Effective date:** 2012-08-13
- **State:** MD
- **EPA docket:** EPA-R03-OAR-2012-0394
## Abstract

EPA is taking direct final action to approve revisions to the Maryland State Implementation Plan (SIP). The revisions pertain to sources which are exempt from preconstruction permitting requirements under Maryland's New Source Review (NSR) program. EPA is approving these revisions in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/06/12/2012-14103/approval-and-promulgation-of-air-quality-implementation-plans-maryland-permit-to-construct)
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