Division of air quality update on epa boiler mact rules
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Division of Air Quality Update on EPA Boiler MACT Rules. Steve Schliesser Environmental Engineer March 2012. Topics to be Covered. Background on EPA Boiler MACT Rules Highlights & Proposed Changes to Boiler MACT Highlights & Proposed Changes to Boiler GACT

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Division of Air Quality Update on EPA Boiler MACT Rules

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Division of air quality update on epa boiler mact rules

Division of Air Quality Update on EPA Boiler MACT Rules

  • Steve Schliesser

  • Environmental Engineer

  • March 2012


Topics to be covered

Topics to be Covered

  • Background on EPA Boiler MACT Rules

  • Highlights & Proposed Changes to Boiler MACT

  • Highlights & Proposed Changes to Boiler GACT

    - EPA Boiler MACT and GACT Rulemaking process continues until at least May 2012

    - Litigation expected after May 2012 final rule


Background on epa boiler mact rules

Background on EPA Boiler MACT Rules

  • Clean Air Act Requires National Emission Standards for Hazardous Air Pollutants (HAP)

    • Develop Maximum Achievable Control Standards (MACTs) for major facilities emitting one HAP > 10 ton/yr or multiple HAPS > 25 ton/yr

    • Develop Generally Available Control Standards (GACTs) for non-major facilities emitting one HAP < 10 ton/yr or multiple HAPS < 25 ton/yr


Boiler mact impact in north carolina

Boiler MACT Impact in North Carolina

  • Affects 98 facilities and ~1,000 boilers

  • All but one facility has 112(j) permit, shielding MACT compliance up to 8 yrs (2018/2019)

  • State of NC has 2nd highest projected impact from Boiler MACT in U.S. with cost > $1 billion


Boiler mact rulemaking process timetable

Boiler MACT Rulemaking Process Timetable

EPA Proposed Rule in Jan 2003

EPA Promulgated Final Rule in Sept 2004

U.S. Court Vacated and Remanded Final Rule in June 2007

EPA Proposed Rule in June 2010

U.S. Court Denied EPA Time-Extension Request in Jan 2010

EPA Promulgated Final Rule in March 2011

EPA Stayed Effective Date of Final Rule in May 2011

EPA Proposed Amendments to Final Rule in Dec 2011

U.S. Court Vacated EPA Stay in Jan 2012

EPA Expects to Promulgate Final Rule by May 2012


Recently re proposed boiler mact

Recently (Re)Proposed Boiler MACT

U.S. Court vacated EPA stay in January 2012

Slight national impact, but one NC facility lost 112(j) permit since rule’s restored effective date occurred before permit was issued

DAQ submitted comments on re-proposal in Feb 2012

EPA expects to finalize Boiler MACT in May 2012


Division of air quality update on epa boiler mact rules

MACT procedure sets the bar of top 12% -- for each boiler type/fuel sub-category and each HAP -- for remaining to meet

Re-proposal changes offer more flexibility, less cost impact, with offsetting increases/decreases in HAP emissions

Highlights of proposed changes

Added new sub-categories for total of 19

New and alternative HAP emissions limits

New work practice standards and provisions

Modified clean gas specification for natural gas and equivalent gaseous fuels

Recently (Re)Proposed Boiler MACT


Division of air quality update on epa boiler mact rules

  • Synopsis of Boiler MACT

  • Emission Standards for Existing Units


Recently re proposed boiler gact

Recently (Re)Proposed Boiler GACT

  • GACT procedure uses generally available (not maximum achievable) control technologies or management practices

  • Re-proposed rule eases requirements without changing emissions, costs, or benefits

  • Affects 300 permitted facilities and 600 boilers

  • > 90% conduct periodic tune-ups and

    some perform one-time energy assessment

  • Remaining burn coal and mustmeet emission limits for mercury and carbon monoxide.


Boiler gact emission and work practice standards

For more details see http://www.epa.gov/airquality/combustion/docs/20111202asboilersfs.pdf

Boiler GACT Emission and Work Practice Standards


Questions

Questions?

Steve Schliesser

Environmental Engineer

919-707-8701

[email protected]

http://www.ncair.org/


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