Now What? In January 2013, EPA’s PM2.5 SIP Guidance developed under Subpart 1 was remanded. EPA is required to develop new PM2.5 SIP Guidance under Subpart IV. EPA should be finalizing that guidance in 2014.
Comparison Subpart I vs. IV MilestoneSubpart 1 DeadlineSubpart IV Deadline Designations effectiveDec 2009 Attainment plans dueDec 2012June 2011 Attainment date (earliest)Dec 2014Dec 2015 Reclassification to Serious (mandatory bump up) N/AJune 2016 Serious area attainment plans due N/ADec 2017 Attainment date (latest)Dec. 2019 (for severe areas)Dec 2019 (Serious areas: 10 yrs) 1-year ExtensionN/AUp to 2 Additional 5-year extensionN/ADec 2024
Utah Schedule – Subpart IV SIP Negotiate Requirements for “Approvable SIP” with EPA: This morning Inventory Work Done: April 1 RACT/RACM Complete: April 1 CMAQ Modeling begins: May Drafted by DAQ: June / July Proposed by AQB: August Comment Period: September Approved by AQB and Submitted to EPA: November
Ozone NAAQS Review EPA has revised their schedule – the best guess is that NAAQS will be proposed in 2014 and finalized by 2015. Designations will be occur in 2017. SIPs due 2020 (earliest) – based on design value (marginal / moderate / serious). Note that our PM2.5 controls will also control ozone.
SO 2 Implementation Guidance EPA will finalize implementation guidance “shortly.” Threshold for 1 st stage ≈ 1,900 tpy. 1 Year of on-site meteorological data collection. Modeling (CALPUFF vs. AERMOD) to identify appropriate monitoring site(s). 3 Years of ambient monitoring. Designations based on monitoring data. SIP due 3 years later. Attainment date 4 years after designation.
Tier III Governor’s State of the State address Tier III Vehicles ◦ Opt into Cal LEV III Program ◦ Will affect MY2017 vehicle fleet mix ◦ When/If Federal Tier III starts (2017), our fleet % Tier III cars will be 2 years advanced. Tier III Fuels ◦ State cannot “Opt in” to Cal RFG program Controlled by Energy Policy Act of 2005 Not in the same PADD (4 vs. 5) ◦ EPA holding all the cards to calculate the benefits of Tier III Fuels ◦ CAAT recommending State identify incentives to “encourage” voluntary production
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