Action Initiation List – April 2015 Page 1 of 3April 2015 Action Initiation List (as of 6/15/2015)U.S. Environmental Protection Agency (EPA)The following actions were initiated by EPA this month. Explanations of which EPA actions are included on this list and of eachelement of the table can be found at the end of this document.The two most recent Action Initiation Lists (AILs) can always be found at: http://www.epa.gov/lawsregs/search/ail.html. But, theywill not provide updates on the actions listed herein. Updates on priority rulemakings are available from EPA's RegulatoryDevelopment and Retrospective Review Tracker (RegDaRRT) on www.epa.gov/rulemaking/.For all rules – those that arein RegDaRRT and those that arenot – you may obtain updates twice a year in EPA’s SemiannualRegulatory Agenda, which is accessible from these Web sites:• EPA’s Laws, Regulations, Guidance and Dockets(http://www.epa.gov/lawsregs/search/regagenda.html)• RegInfo.gov (http://www.reginfo.gov/public/do/eAgendaMain)• Regulations.gov(http://www.regulations.gov/fdmspublic/component/main?main=UnifiedAgenda&agency=EPA&pubperiod=200710)Action Initiation List – April 2015 Page 2 of 3Action TitleStageContactAbstractProjectedPublicationDatePrevention of SignificantDeterioration (PSD) andTitle V Permitting forGreenhouse Gases:Establishment of aSignificant EmissionRate for GreenhouseGas Emissions underthe PSD Program &Revisions to theTailoring Rule Provisionsfor PSD and Title VPermittingNPRM Joseph Mangino919-541-9778Mangino.Joseph@epa.govThe EPA is taking this action to propose a Greenhouse Gas (GHG)Significant Emission Rate (SER) under the Prevention of SignificantDeterioration (PSD) air permitting program and propose certainrevisions to the provisions ofthe Prevention of SignificantDeterioration (PSD) and Title V Greenhouse Gas Tailoring Rule. Theproposed GHG SER would establish an appropriate threshold levelbelow which Best Available Control Technology (BACT) is not requiredfor a source’s GHG emissions. The Tailoring Rule revisions will allowus to revise certain GHG permitting regulatory provisions, whichinclude the PSD GHG Plantwide Applicability Limits (PALs), and willalso implement a recent Court of Appeals for the District of Columbiadecision that ordered, among other things, that the Tailoring Ruleregulations under review be vacated to the extent they require astationary source to obtain a title V permit solely because the sourceemits or has the potential to emit GHG above the applicablethresholds.More than12 monthsMunicipal SeparateStorm Sewer GeneralPermit Remand RuleNPRM Greg Schaner202-564-0721Schaner.Greg@epa.govEPA’s Phase II stormwater regulationsdetail, among other things, howthe nation’s 6700 small municipalseparate storm sewer systems canobtain authorization to discharge. This action will proposemodifications to the regulations for municipal separate sewer systemsto address a U.S. Circuit Court ofAppeals for the Ninth Circuit remand(EDC v. EPA, 2003). The provisions that are thesubject of the remandinclude requirements affectingthe use of general permits.12 monthsor lessAction Initiation List – April 2015 Page 3 of 3What EPA Actions Appear on the AILs?Generally, AILs include those actions that 1) will appear in upcomingSemiannual Regulatory Agendaand 2) have been approved forcommencement by EPA’s Regulatory Policy Officer. In rare instances, an action will not appear on an AIL before it appears in theAgenda.Also, keep in mind that AILs will not post immediately. Youcan access a given month's list roughly 20 days after the close ofthe month (e.g.,the April 2014 AIL will post sometime around May 20th).What Does Each Column in the AIL Mean?Title:Self-explanatory.Stage:The stage of an action describes where we are in the rule writing process, from the very beginning when a rule (or other action) isjust an idea to the end when it is published as a final rule (orother action) in the Federal Register. For example, the Noticeof ProposedRulemaking (NPRM) stage announces a proposed rule or proposed modification to an existing rule. In the AILs, the following acronyms areused:• ANPRM - Advance Notice of Proposed Rulemaking• NPRM - Notice of Proposed Rulemaking• Supplemental - Supplemental NPRM• Direct Final - Direct Final Action• Interim Final - Interim Final Action• Final - Final Action• Section 610 Review - Agency Review underSection 610 of the Regulatory Flexibility ActContact:Provides the name, phone, and email address for the EPA staff personassigned to this rule. Additionally, if a rule is in EPA'sRegDaRRT (www.epa.gov/rulemaking/), then a link to the rule's profile will be provided in this column.Abstract:A brief summary of the action and its purpose.Projected Publication Date:Since many variables affect how long it takes to write a rule or other action, it is difficult to predict a firmpublication date when we have just started working on an action.Therefore, we insert one of twooptions in the "Projected Publication Date"column: 1) "12 months or less" and 2) "more than 12 months."These options give you some idea of how quickly we expect to complete anaction.