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Technology Transfer Network - Air Toxics Web Site

Risk and Technology Review

What is the RTR Program?

The Risk and Technology Review (RTR) is a combined effort to evaluate both risk and technology as required by the Clean Air Act (CAA) after the application of maximum achievable control technology (MACT) standards. Section 112(f) of the CAA requires EPA to complete a Report to Congress that includes a discussion of methods the EPA would use to evaluate the risks remaining after the application of MACT standards. These are known as residual risks. EPA published the Residual Risk Report to Congress (PDF) in March 1999. Section 112(f)(2) directs EPA to conduct risk assessments on each source category subject to MACT standards, and to determine if additional standards are needed to reduce residual risks. Section 112(d)(6) of the CAA requires EPA to review and revise the MACT standards, as necessary, taking into account developments in practices, processes and control technologies. The methodology for conducting these reviews is described in: Risk and Technology Review (RTR) Risk Assessment Methodologies: For Review by the EPA’s Science Advisory Board with Case Studies – MACT I Petroleum Refining Sources and Portland Cement Manufacturing (EPA-452/R-09-006). The Science Advisory Board (SAB) RTR Methods Review Panel held a meeting on July 28-29, 2009 to review this document, and a final report of their review is available at the SAB website .

Recent Actions

RTR Review Files

RTR review files that contain the risk modeling data will be posted here during the public comment periods for all RTR proposals. To use the emission data files, you must download them to your computer and unzip them to view the data and provide comments.

The files provided here include detailed instructions for downloading and updating the emission data files.

RTR Project Lead Phone Number Instructions Emission Files
Phosphoric Acid and Phosphate Fertilizers RTR Tina Ndoh 919-541-2750
63k

1.7 MB
Ferroalloys Production RTR Phil Mulrine 919-541-5289
63k

1.4 MB

 

Current Schedules

The EPA is under a consent decree to complete RTRs for 15 additional source categories. Many of the consent decree dates were recently extended, and the schedules for all of the categories are shown in the following table:

Source Category
(Link to Technical Information)
Consent Decree Date for Signature of Proposed Rule Consent Decree Date for Signature of Final Rule
Ferroalloys Production 11/4/2011-Completed
Supplemental Proposal: 9/4/2014-Completed
5/28/2015
Mineral Wool 11/4/2011-Completed
Supplemental Proposal: 10/15/2014-Completed
6/18/2015
Wool Fiberglass 11/4/2011-Completed
Supplemental Proposal: 10/15/2014-Completed
6/18/2015
Primary Aluminum 11/4/2011-Completed
Supplemental Proposal: 11/13/2014
8/14/2015
Secondary Aluminum 1/30/2012-Completed
Supplemental Proposal: 11/13/2014
8/14/2015
Petroleum Refineries 5/15/2014-Completed 4/17/2015
Off-Site Waste Recovery Operations 5/30/2014-Completed 2/27/2015
Phosphoric Acid Production 10/21/2014-Completed 7/21/2015
Phosphate Fertilizer Manufacturing 10/21/2014-Completed 7/21/2015
Aerospace 12/15/2014 10/15/2015
Portland Cement 6/15/2017 6/15/2018

 

Other RTR Actions

The EPA has completed the RTRs for the following source categories:

Source Category
(Link to Technical Information)
Proposed Rule Publication Date Final Rule Publication Date
Flexible Polyurethane Foam Production 11/4/2013
8/15/2014
Acrylic/ Modacrylic Fibers 1/9/2014 10/8/2014
Polycarbonates Production 1/9/2014 10/8/2014
Polymers and Resins III 1/9/2014 10/8/2014
Pesticide Active Ingredient Production 11/30/2011 1/31/2014
Polyether Polyols Production 11/30/2011 1/31/2014
Polymers and Resins IV (7 categories) 11/30/2011 1/31/2014
Steel Pickling 10/21/2010 and 2/8/2012 9/19/2012
Chromium Electroplating
-Hard Chromium Electroplating
-Decorative Chromium Electroplating
-Chromium Anodizing Tanks
10/21/2010 and 2/8/2012 9/19/2012
Pulp and Paper I and III 12/27/2011 9/11/2012
Oil and Natural Gas Production 8/23/2011 8/16/2012
Natural Gas Transmission and Storage 8/23/2011 8/16/2012
Secondary Lead Smelters 5/19/2011 1/5/2012
Shipbuilding and Ship Repair 12/21/2010 11/21/2011
Wood Furniture 12/21/2010 11/21/2011
Primary Lead Smelting 2/17/2011 11/15/2011
Marine Vessel Loading 10/21/2010 4/21/2011
Pharmaceuticals 10/21/2010 4/21/2011
Printing and Publishing 10/21/2010 4/21/2011
Polymers and Resins I
-Epichlorohydrin Elastomers
-Nitrile Butadiene Rubber
-Polybutadiene Rubber
-Styrene Butadiene Rubber and Latex
10/21/2010 4/21/2011
Polymers and Resins I
-Polysulfide Rubber
-Ethylene Propylene Rubber
-Butyl Rubber
-Neoprene
12/12/2007 12/16/2008
Polymers and Resins II
-Epoxy Resins
-Non-Nylon Polyamides
12/12/2007 12/16/2008
Generic MACT (GMACT) I
-Acetal Resins Production
-Hydrogen Fluoride Production
12/12/2007 12/16/2008
Halogenated Solvent Cleaning 12/14/2006 5/3/2007
Hazardous Organics NESHAP (HON) 6/14/2006 12/21/2006
Dry Cleaners
-Major Sources
-Area Sources
-Co-Residential
12/21/2005 7/27/2006
Industrial Process Cooling Towers 10/24/2005 4/7/2006
Ethylene Oxide Emission Standards for Sterilization Facilities 10/24/2005 4/7/2006
Magnetic Tape 10/24/2005 4/7/2006
Gasoline Distribution 8/10/2005 4/6/2006
Coke Ovens 8/9/2004 4/15/2005

 

RTR Source Categories and Project Lead Contact Information

RTR Project Lead Phone Number
Aerospace Kim Teal 919-541-5580
Acrylic/Modacrylic Fibers Production Nick Parsons 734-214-4479
Chrome Electroplating Phil Mulrine 919-541-5289
Coke Ovens Donna Lee Jones 919-541-5251
Dry Cleaning Tina Ndoh 919-541-2750
Ethylene Oxide Sterilizers Hillary Ward 919-541-3154
Ferroalloys Production Phil Mulrine 919-541-5289
Flexible Polyurethane Foam Production Kaye Whitfield 919-541-2509
Gasoline Distribution Andrew Bouchard 919-541-4036
GMACT- Acetal Resins Nick Parsons 734-214-4479
GMACT- Hydrogen Fluoride Chuck French 919-541-7912
Halogenated Solvents Amy Hambrick 919-541-0964
Hazardous Organic NESHAP (HON) Nick Parsons 734-214-4479
Industrial Cooling Towers Brenda Shine 919-541-3608
Magnetic Tape Nick Parsons 734-214-4479
Marine Vessel Loading Andrew Bouchard 919-541-4036
Mineral Wood Production Susan Fairchild 919-541-5167
Oil and Natural Gas Air Pollution Standards Bruce Moore 919-541-5460
Off-site Waste Recovery Operations Paula Hirtz 919-541-2618
Pesticide Active Ingredient Production Nick Parsons 734-214-4479
Petroleum Refineries Brenda Shine 919-541-3608
Pharmaceuticals Nick Parsons 734-214-4479
Phosphoric Acid and Phosphate Fertilizers Tina Ndoh 919-541-2750
Polycarbonates Production Nick Parsons 734-214-4479
Polyether Polyols Production Nick Parsons 734-214-4479
Polymers/Resins I-Butyl Rubber Nick Parsons 734-214-4479
Polymers/Resins I-Epichlorohydrine Elastomers Nick Parsons 734-214-4479
Polymers/Resins I-Ethylene-Propylene Rubber Nick Parsons 734-214-4479
Polymers/Resins I-Hypalon Production Nick Parsons 734-214-4479
Polymer/Resins I-Neoprene Nick Parsons 734-214-4479
Polymers/Resins I-Nitrile Butadiene Production Nick Parsons 734-214-4479
Polymers/Resins I-Polybutadiene Rubber Nick Parsons 734-214-4479
Polymers/Resins I-Polysulfide Rubber Nick Parsons 734-214-4479
Polymers/Resins I-Styrene-Butadiene Rubber/Latex Nick Parsons 734-214-4479
Polymers/Resins II-Epoxy Resins Nick Parsons 734-214-4479
Polymers/Resins II-Non-nylon Polyamides Nick Parsons 734-214-4479
Polymers and Resins III Nick Parsons 734-214-4479
Polymers/Resins IV Production Nick Parsons 734-214-4479
Primary Aluminum Production David Putney 919-541-2016
Primary Lead Smelting Nathan Topham 919-541-0483
Printing and Publishing Kim Teal 919-541-5580
Pulp and Paper Production Bill Schrock 919-541-5032
Secondary Aluminum Production Rochelle Boyd 919-541-1390
Secondary Lead Smelting Nathan Topham 919-541-0483
Steel Pickling Phil Mulrine 919-541-5289
Wool Fiberglass Manufacturing Susan Fairchild 919-541-5167

 

Key Excerpts from the Clean Air Act Regarding Residual Risk and Technology Review

Clean Air Act

Section 112(f(2)

       
  (2) EMISSION STANDARDS.--  
       (A) If Congress does not act on any recommendation submit-
     ted under  paragraph (1), the Administrator  shall, within 8
     years after  promulgation of standards for  each category or
     subcate-gory of  sources pursuant to subsection (d), promul-
     gate   stand-ards  for  such   category  or  subcategory  if
     promulgation  of  such standards  is  required  in order  to
     provide  an ample margin of safety  to protect public health
     in  accordance with this  sec-tion (as in  effect before the
     date of enactment of  the Clean Air Act Amendments  of 1990)
     or  to  prevent, taking  into consid-eration  costs, energy,
     safety, and other relevant factors, an adverse environmental
     effect. Emission standards promulgated under this subsection
     shall provide  an ample margin  of safety to  protect public
     health in accordance
     with this section (as in effect before the date of enactment
     of  the  Clean  Air  Act  Amendments  of  1990), unless  the
     Administrator determines that  a more stringent standard  is
     necessary  to  prevent,  taking  into  consideration  costs,
     energy,  safety,  and  other  relevant  factors, an  adverse
     environmental  effect. If standards  promulgated pursuant to
     subsection (d)  and applicable to a  category or subcategory
     of sources  emitting a pollutant (or  pollutants) classified
     as a  known, probable  or possible  human carcinogen  do not
     reduce lifetime  excess cancer risks to  the individual most
     exposed to  emissions  from  a  source in  the  category  or
     subcategory   to  less   than  one   in  one   million,  the
     Administrator   shall   promulgate   standards  under   this
     subsection for such source category. 
       (B) Nothing in subparagraph (A) or in  any other provision
     of this section shall be construed as affecting, or applying
     to the Administrator's interpretation of this section, as in
     effect before the  date of  enactment of the  Clean Air  Act
     Amendments  of 1990 and set forth in the Federal Register of
     September 14, 1989 (54 Federal Register 38044). 
       (C) The  Administrator shall  determine whether or  not to
     promulgate such standards and,  if the Administrator decides
     to promulgate such standards, shall promulgate the standards
     8 years after promulgation of the standards under subsection
     (d) for  each source  category or subcategory  concerned. In
     the case of categories  or subcategories for which standards
     under subsection (d) are required to be promulgated within 2
     years  after  the date  of enactment  of  the Clean  Air Act
     Amendments  of 1990,  the Administrator  shall have  9 years
     after promulgation of the  standards under subsection (d) to
     make the determination under  the preceding sentence and, if
     required, to promulgate the standards under this paragraph....
112(d)(6)
	 
	 (6) Review  and revision.- The Administrator  shall review, and
revise as necessary (taking into account developments in practic-
es,  processes,  and  control technologies),  emission  standards
promulgated under this section no less often than every 8 years.    
            

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