August 5, 2013 – This final rule made certain revisions to the final rule published on March 11, 2011, which established emissions standards for major source boilers and process heaters under Section 112 of the Clean Air Act, See 76 Fed. Reg. 15608. The EPA received petitions for administrative reconsideration of the February 1, 2013, rule pursuant to section 307(d)(7)(B) of the Clean Air Act.
- Revised carbon monoxide (CO) limits based on a minimum CO level of 130 ppm; and
- The use of continuous parameter monitoring system (CPMS), including the consequences of exceeding the operating parameter.
- The reconsideration process petitions stated that the public lacked sufficient opportunity to comment on these provisions. Although these provisions were established after consideration of public comments received on the proposed rule, the EPA is granting reconsideration in order to allow an additional opportunity for comment. The EPA will issue a Federal Register notice that will provide a more detailed description of the issues on which public comment will be solicited, as well as specific information about the process to be followed. The EPA is continuing to evaluate the other issues raised in the petitions.
Additionally, the EPA intends to make certain clarifying changes and corrections to the final rule, some of which were also raised in the petitions for reconsideration. Specifically, the EPA intends to:
1) Clarify issues related to the applicability of the major source boiler rule to natural gas-fired electric utility steam generating units (EGUs)
2) Clarify the compliance date for coal- or oil-fired EGUs that become subject to the major source boiler rule;
3) Correct the conversion error in the MACT floor calculation for existing hybrid suspension grate boilers
4) Clarify certain recordkeeping requirements, including, for example, those related to records for period of startup and shutdown for boilers and process heaters in the Gas 1 subcategory.
5) The EPA also intends to clarify and correct certain inadvertent inconsistencies in the final rule regulatory text, such as removal of unnecessary references to statistical equations, inclusion of averaging time for operating load limits in Table 6 to the final rule, and correction of the compliance date for existing sources to reflect the effective date of the final rule.