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Energy & environment · 26/04/1994Updated: 10/16/2026 · 1 min read

Prevention of Significant Deterioration of Air Quality (PSD) Patowmack Power Partners, L.P. Loudoun County, Virginia

Summary

The Environmental Protection Agency (EPA) issued an Order Denying Review on February 24, 1994, regarding the Prevention of Significant Deterioration (PSD) permit issued to Patowmack Power Partners, L.P. in Loudoun County, Virginia.

Original source language: Federal Register — Environmental Protection AgencyOpen original release →

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Energy & environment · 5/29/2026

EPA Approves Revisions to California Air Pollution Control Districts

The Environmental Protection Agency (EPA) has taken final action to approve revisions to the San Joaquin Valley Unified Air Pollution Control District, Ventura County Air Pollution Control District, and South Coast Air Quality Management District portions of the California State Implementation Plan, regulating emissions of volatile organic compounds from crude oil and natural gas production facilities.

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Energy & environment · 5/29/2026

Air Plan Approval; Michigan; Determination of Attainment by the Attainment Date for the 2015 Ozone Standards

The Environmental Protection Agency (EPA) is proposing to determine that the Detroit, Michigan nonattainment area attained the 2015 ozone National Ambient Air Quality Standards by the applicable attainment date, relying on an exceptional events request submitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on February 19, 2026.

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Energy & environment · 5/29/2026

Air Plan Approval; Indiana; Keystone VOC RACT Alternative Control

The Environmental Protection Agency (EPA) is approving revisions to the volatile organic compound (VOC) requirements for Keystone Automotives Industries dba Saturn Wheel (Keystone) in Indiana, following a Commissioner's Order submitted by the Indiana Department of Environmental Management (IDEM). The EPA proposed approval on February 27, 2026, after receiving no adverse comments.

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Energy & environment · 5/29/2026

EPA Issues Significant New Use Rules on Certain Chemical Substances

The U.S. Environmental Protection Agency (EPA) is issuing significant new use rules (SNURs) for certain chemical substances under the Toxic Substances Control Act (TSCA), requiring persons to notify EPA at least 90 days before commencing manufacture or processing for designated significant new uses.

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