An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Petition for Rulemaking to Reconsider Provisions of the Coal Combustion Residuals Rule and Request to Hold in Abeyance Challenge to the Coal Combustion Residuals Rule, May 31, 2017

AES Puerto Rico LP's (“AES-PR”) petition for rulemaking requests reconsideration of how the Coal Combustion Residuals (CCR) rule (40 CFR part 257, subpart D) regulates the storage of CCR at a facility (on-site) as a “CCR pile” before the CCR is delivered to a third party for beneficial use or disposal (off-site).  The petition also requests that EPA take immediate action to extend the CCR rule’s compliance deadlines and requests that EPA also ask the United States Court of Appeals for the District of Columbia Circuit to hold the consolidated challenges to the CCR rule in abeyance for reasons explained in the petition.

Document accessibility: Mary Jackson, 703-308-8453

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.