2016-27422: Promulgation of Air Quality Implementation Plans; Arizona; Regional Haze Federal Implementation Plan; Reconsideration
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The Environmental Protection Agency (EPA) is revising portions of the Arizona Regional Haze Federal Implementation Plan (2014 FIP) applicable to the Phoenix Cement Company (PCC) Clarkdale Plant and the CalPortland Cement (CPC) Rillito Plant. This 2014 FIP was adopted earlier under the provisions of the Clean Air Act (CAA). We are finalizing without change our proposal to replace the control technology demonstration requirements for nitrogen oxides (NO<INF>X</INF>) applicable to Kiln 4 at the Clarkdale Plant and Kiln 4 at the Rillito Plant with a series of revised recordkeeping and reporting requirements. When EPA finalized the 2014 FIP, we had limited operating data for the use of Selective Non-Catalytic Reduction (SNCR) on cement plants. Therefore, we required that PCC and CPC perform control technology demonstration projects to support the control efficiencies for SNCR in the 2014 FIP, as well as to determine if more stringent control efficiencies were achievable. In early 2015, a control technology demonstration project was performed on the SNCR installed at another CalPortland Cement facility, the Mojave Plant. Our analysis of the SNCR control efficiency data from that project indicated that more stringent SNCR control efficiencies were not achievable at PCC and CPC. As a result, the additional information from the control technology demonstration projects required by the 2014 FIP is no longer needed because the PCC and CPC SNCR control efficiencies in the 2014 FIP are consistent with the SNCR performance at the Mojave Plant. In addition, the EPA is making a minor technical correction to change an equation to match the language in the regulatory text.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
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