# Approval and Promulgation of Air Quality Implementation Plans; Maryland; Approval of an Alternative Volatile Organic Compound Emission Standard
> **Rule** · Final rule. · Published 2018-05-14 · Effective 2018-06-13 · 83 FR 22203
## Document
- **Document number:** 2018-09889
- **Category:** air-emissions
- **Federal Register citation:** 83 FR 22203
- **CFR reference:** 40 CFR 52
- **Publication date:** 2018-05-14
- **Effective date:** 2018-06-13
- **State:** MD
- **EPA docket:** EPA-R03-OAR-2017-0394
## Abstract

The Environmental Protection Agency (EPA) is approving a revision to the State of Maryland's state implementation plan (SIP). Maryland requested that EPA incorporate by reference into the Maryland SIP a Maryland Department of the Environment (MDE) order establishing an alternative volatile organic compound (VOC) emission standard for National Gypsum Company (NGC) that will ensure that this source remains a minor stationary source of VOCs. EPA is approving the SIP submittal incorporating by reference MDE's order for NGC in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/05/14/2018-09889/approval-and-promulgation-of-air-quality-implementation-plans-maryland-approval-of-an-alternative)
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