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Updates from Office of Air Monitoring and Analysis

Updates from Office of Air Monitoring and Analysis. Alice H. Chow Associate Director. Requests for updates. Proposed Ozone Monitoring changes PAMS Re-engineering Emissions Inventory Draft for SIP development. Proposed Ozone Monitoring Changes.

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Updates from Office of Air Monitoring and Analysis

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  1. Updates from Office of Air Monitoring and Analysis Alice H. Chow Associate Director

  2. Requests for updates • Proposed Ozone Monitoring changes • PAMS Re-engineering • Emissions Inventory Draft for SIP development

  3. Proposed Ozone Monitoring Changes • Co-proposed with the new Ozone NAAQS Proposed Rulemaking (June 6, 2013); final rule Dec. 2014 • No new monitoring required • Change to the Ozone season based on occurrences of 8-hour averages of ≥ 0.060 ppm either before or after each state’s required ozone season • Require year round monitoring at Ncore stations • ORD is planning to propose a new FRM • Current FRM is obsolete • New FRM will be NO-chemiluminescence method • Proposed changes to 40 CFR part 53 regarding new ozone FRM/FEM performance specifications

  4. PAMS Re-Engineering • PAMS revised VOC Target List • PAMS monitoring agencies could begin reporting just the existing priority compounds • New priority compounds are not required to be reported in 2014 • Calibration standards are not ready for 2014 season • States/Locals may voluntarily report

  5. PAMS Re-Engineering • Current PAMS network requirements call for up to 5 sites in each serious and above ozone non-attainment area • – Type 1 Upwind • – Type 2 Max emissions • – Type 3 Max ozone • – Type 4 Extreme Downwind • PAMS Season June-August • 75 current PAMS sites

  6. PAMS Re-Engineering--Current

  7. PAMS Re-Engineering • Co-proposed with the new Ozone NAAQS Proposed Rulemaking; final rule Dec. 2014 • Reduce number of required sites to 1 per area (26 total) but expand PAMS applicability to all O3 non-attainment areas • Require PAMS at NCore sites in O3 non-attainment areas but allow for Regional approval of alternative site (e.g., existing type 2 PAMS sites) • All sites required to collect hourly VOC data (likely via autoGC’s) • All sites required to collect carbonyls • All sites required to measure “true NO2” in addition to current NOy • Change requirement for upper air meteorology to requirement for measuring/reporting mixing height

  8. PAMS Re-Engineering--Proposed

  9. PAMS Re-Engineering • Require all O3 NA areas to also develop and implement an “enhanced ozone monitoring plan” • Details of what, where, when and how to measure would generally be left up to monitoring agencies • Primary objectives would be to gather data to understand and solve local ozone problem • Could include additional O3 sites, PAMS sites, radar profilers, mobile sites, etc. • Current Activities • AutoGC evaluation to determine capabilities of new generation of autoGCs • Evaluation of ceilometers as alternative to much more costly radar profilers • Evaluation of improvements to carbonyl measurement methods

  10. DRAFT Emissions Inventory Guidance for SIP development • Background/Caveats • This draft guidance is intended to replace the November 2005 guidance. • This draft guidance • Contains the 2008 Ozone NAAQS Implementation requirements proposed June 6, 2013 (78 FR 34178); once the final Ozone implementation rule is published, EPA will revise this guidance. • Contains “placeholders” for PM2.5 NAAQS implementation requirements since they have not yet been proposed. Once the implementation rule is proposed, EPA will update this guidance. • Note the Air Emissions Reporting Requirement (AERR) revision is not yet final; however, much of the definitions and changes have been incorporated into this draft.

  11. DRAFT Emissions Inventory Guidance for SIP development • Organization • While this draft is not a procedures document, it provides references and resources for emissions inventories development as well as identifies relevant statutory provisions concerning emissions inventories. • SIP Inventory components are laid out for each rule • Primary focus is on planning inventories • Provides both required and optional steps in developing an inventory • Notes differences between submitting data as part of AERR versus SIP submissions which require EPA approvals, public hearings, etc.

  12. DRAFT Emissions Inventory Guidance for SIP development • Emissions Inventory Definitions • For convenience, definitions relevant for emissions inventories found in the Clean Air Act or codified in the AERR and implementation rules are included. • New to EI guidance, examples: • High Electricity Demand Day • Distributed generation • Startup/shutdown/malfunction emissions

  13. DRAFT Emissions Inventory Guidance for SIP development • SIP Inventory Requirements and Recommendations • Timing—when inventories are due are now based on “years after designation” not a specific date • Option to provide an Inventory Preparation Plan (IPP) and an associated QAPP • Ozone Periodic Inventory—established conditions for AERR submittal to meet ozone periodic inventory requirement • Regional Haze updated current year inventory—AERR may be able to meet this requirement but would still require public hearing! Must meet conditions identified • Draft guidance contains suggested elements of an EI SIP

  14. DRAFT Emissions Inventory Guidance for SIP development • Developing Current EI--New to guidance • Treatment of Methane—for modeled attainment demonstrations, some agencies might want to consider using speciation profiles, not the default fractions • Partial county emissions are required when NAA is a partial county. Reasons are related to litigation on including emissions from outside NAA in RFP calculations. (Note this is different from AERR—the Emission Inventory System does not support partial counties.) • Startup/shutdown emissions are specifically addressed--must pass the same “de minimus” test as other emissions to be excluded from inventories. Emissions that can be estimated and are not unexpected and are not de minimus should be included

  15. DRAFT Emissions Inventory Guidance for SIP development • High electricity demand day periods should be included if agencies feel like they need to be addressed as part of their nonattainment problem • Biogenic and fire emissions must be included in NAA inventories (base year and/or the attainment projected inventory), but not in RFP calculations • Other sections: linked-based Travel Demand Models may be used for mobile sources in partial counties; submitting shape files; projection inventories; quality assurance of inventories…

  16. DRAFT Emissions Inventory Guidance for SIP development • Submit Comments • There doesn’t seem to be a deadline on the TTN website, but comments should be sent to: info.chief@epa.gov • OAQPS is planning to conduct a webinar in June

  17. Questions? Comments?

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