# Approval and Promulgation of Air Quality Implementation Plans; Virginia; Opacity Source Surveillance Methods
> **Rule** · Direct final rule. · Published 2010-02-24 · Effective 2010-04-26 · 75 FR 8249
## Document
- **Document number:** 2010-3512
- **Category:** air-emissions
- **Federal Register citation:** 75 FR 8249
- **CFR reference:** 40 CFR 52
- **Publication date:** 2010-02-24
- **Effective date:** 2010-04-26
- **State:** VA
- **EPA docket:** EPA-R03-OAR-2010-0009
## Abstract

EPA is taking direct final action to approve revisions to the Commonwealth of Virginia State Implementation Plan (SIP). The revisions update methods for determining compliance with opacity standards for existing, new and modified stationary sources. 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/2010/02/24/2010-3512/approval-and-promulgation-of-air-quality-implementation-plans-virginia-opacity-source-surveillance)
---
*AI Analytics · CC0 1.0*