# Approval and Promulgation of Air Quality Implementation Plans; Maryland; Infrastructure Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standard
> **Rule** · Final rule. · Published 2020-06-16 · Effective 2020-07-16 · 85 FR 36343
## Document
- **Document number:** 2020-11643
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 36343
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-06-16
- **Effective date:** 2020-07-16
- **State:** MD
- **EPA docket:** EPA-R03-OAR-2018-0042
## Abstract

The Environmental Protection Agency (EPA) is approving portions of a state implementation plan (SIP) submittal from the State of Maryland. The submittal pertains to the basic program elements referred to as infrastructure requirements for the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS or standard). EPA is approving certain elements of the infrastructure SIP submittal in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/06/16/2020-11643/approval-and-promulgation-of-air-quality-implementation-plans-maryland-infrastructure-requirements)
---
*AI Analytics · CC0 1.0*