OAR Policy and Guidance Metarecord

Document Title/Subject: Electric Utility Steam Generating Units: Air Toxics Final Rule: Notice of Data Availability Related Documents:	Signed by: Stephen D. Page, Director, Office of Air Quality Planning and Standards Signature Date: November 29, 2004 Contact: Bill Maxwell (919) 541-5430	Filename(s): http://www.epa.gov/ttn/oarpg/t3/fr_notices/hg_noda.pdf URL(s):
Regulatory Authority: Title 3	Division/Director: Emission Standards Division (OAQPS) / Sally Shaver	Submitted By: coats.cathy	OGC Contact: Rick Vetter OGC Phone#: (919) 541-2127	Internet Contact: Jeff Clark
Document Type: Supplemental Notices,	EPA Document Number: Federal Register: 69 FR 69864	Supersedes:
Subject Category: AIR ENVIRONMENTAL PROTECTION AGENCY NOx	Keywords: Hazardous air pollutants HAPs National Emission Standards for Hazardous Air Pollutants NESHAPs Nitrogen oxides Power plants Electric Utility Steam Generating Units Mercury	Terms: Clean Air Act CAA Federal government Standards
Abstract: EPA issued a proposed Clean Air Mercury Rule (CAMR) under the CAA concerning coal- and oil-fired electric utility steam generating units (power plants) on January 30, 2004, and a supplemental proposal on March 16, 2004. The proposed CAMR represents the first-ever Federal action to regulate mercury (Hg) from this source category. The proposed rule presents two primary alternative approaches to regulating Hg and nickel (Ni) from power plants. EPA received numerous comments on its proposed regulatory approaches, including comments on the modeling results EPA obtained using the Integrated Planning Model (IPM), which is a model that predicts how the power sector will respond to a particular regulatory approach, and comments addressing the speciation of Hg. EPA is currently evaluating those comments to determine how the new data and information received in the comments, as described below, may affect the benefit-cost analysis and regulatory options under consideration. Although we recognize that the public has access to the comments in the rulemaking docket, we are issuing the NODA, in part, because the Agency received over 680,000 public comments, including almost 5,000 unique comments, and the comments present new data and information that are relevant to the two primary regulatory approaches addressed in the proposed CAMR. We are also issuing the NODA to seek input on our benefits methodology, which has been preliminarily revised since the CAMR was proposed. This file is the text of the notice.

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