Mr. Rob Simpson filed this petition for review on behalf of himself and Helping Hand Tools (collectively, “Petitioners”). Petitioners allege that Delta Energy Center (“Delta”), which operates a combined cycle gas-fired power plant, obtained an amendment of a license in March 2017 that effectively modified a prevention of significant deterioration (“PSD”) permit issued to Delta under the Clean Air Act, 42 U.S.C. § 7475.

This case arises from an enforcement action that EPA’s Air Enforcement Division (“Enforcement Division”) brought against two Chinese corporations for Clean Act violations involving mobile sources. CAA §§ 202-19, 42 U.S.C. §§ 7521-54.

Sierra Club petitions the Environmental Appeals Board to review a Clean Air Act prevention of significant deterioration permit that Maricopa County Air Quality Department issued to Arizona Public Service Company in March 2016. The permit authorizes Arizona Public Service to construct five new natural gas-fired combustion turbines at its Ocotillo Power Plant in Tempe, Arizona. Maricopa County issued the final permit pursuant to a delegation agreement between it and the United States Environmental Protection Agency Region 9.

Mr. Shawn Dolan (“Petitioner”) petitions the Environmental Appeals Board (“Board”) to review a Minor New Source Review (“NSR”) permit that the United States Environmental Protection Agency, Region 9 (“Region”), issued to the Salt River Project Agricultural Improvement and Power District at its Navajo Generating Station on the Navajo Indian Reservation in Coconino County, Arizona. The Region issued the permit pursuant to the Federal Minor New Source Review Program in Indian Country, 40 C.F.R. §§ 49.151-.161, authorizing the construction and operation of a refined coal treatment system.

Four individuals (“Petitioners”) jointly filed a petition seeking review of a Clean Air Act Prevention of Significant Deterioration (“PSD”) permit (“Permit”) that the Massachusetts Department of Environmental Protection (“MassDEP”) issued to Footprint Power Salem Harbor Development, LP (“Footprint”). The permit authorizes Footprint to construct and operate a combined cycle electric generating facility in Salem, Massachusetts.

Sierra Club petitions the Environmental Appeals Board (“Board”) to review a Clean Air Act prevention of significant deterioration (“PSD”) permit regulating greenhouse gas (“GHG”) emissions that the United States Environmental Protection Agency (“Agency”) Region 6 (“Region”) issued to ExxonMobil Chemical Company (“Exxon”) on November 25, 2013. The Final Permit authorizes Exxon to construct a new natural gas-fired ethylene production unit (“Facility”) at Exxon’s existing Baytown Olefins Plant in Harris County, Texas.

In her appeal, Celeste Draisner petitions the Environmental Appeals Board (“Board”) to review Permit Number 94-VP-18d, which she asserts is a Prevention of Significant Deterioration (“PSD”) permit that the Shasta County Air Quality Management District (“Shasta County AQMD”) issued to Sierra Pacific Industries, Anderson Division, pursuant to section 165 of the Clean Air Act, 42 U.S.C. § 7475.