Env-A 1300 established Reasonably Available Control Technology (RACT) requirements for stationary combustion sources that emit nitrogen oxides (NOx). The rule specifies emission standards and various reporting and recordkeeping requirements for a range of specialty industrial sources. The rule also specifies the criteria and procedures by which a source can request alternative RACT emission limits. The rule is scheduled to expire on October 31, 2018, but there is a proposed re-adoption with amendment now being considered.

The amendment would:

  • Streamline the annual performance tune-up requirements on applicable boiler(s) to match federal requirements in 40 CFR 63, Subpart JJJJJJ and Subpart DDDDD;
  • Lower the NOx emission standards for municipal waste combustors;
  • Lower the NOx emission standards for older load shaving, gas-fired engines to match older prime power, gas-fired engine limits;
  • Lower the NOx emission standards for older load shaving and older prime power, liquid-fired engines to 40 CFR 60, Subpart IIII Tier 2 levels; and
  • Lower the NOx emissions standards for wet bottom utility boilers firing coal.

The rules apply to owners and operators of specified boilers, combustion turbines, internal combustion engines, asphalt plant dryers, incinerators, wallboard dryers, calcining mills, calciners, gypsum rock dryers, emergency generators, load shaving units, and miscellaneous sources.

In February 2017, the EPA issued a "Findings of Failure to Submit State Implementation Plan Submittals for the 2008 Ozone National Ambient Air Quality Standard (NAAQS)" for 15 states, including New Hampshire, and the District of Columbia. The rule is also being updated pursuant to that finding and will be incorporated into the State Implementation Plan (SIP) when finalized. By September 6, 2018, New Hampshire must submit a completed SIP that includes the updated NOx RACT rule. As specified by EPA the RACT certification for the 2008 8-hour Ozone NAAQs will also serve as the 2015 RACT certification.

If you have any questions on the proposed amendment, please contact Kristine Davies, Principal Consultant of our Boston Office at (508) 273-8600 ext. 2701.