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Northwestern Indiana Air Quality Subcommittee

Northwestern Indiana Air Quality Subcommittee. Report to LADCO Regional Air Quality Workshop November 16, 2005 Mark Strimbu Charlotte Read Co-Chairs. Lake & Porter counties. NW corner of Indiana Part of Chicago CMSA for 1-hr. O3 NAA 1-hr. O3 NAAQS Severe-17 NAA

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Northwestern Indiana Air Quality Subcommittee

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  1. Northwestern Indiana Air Quality Subcommittee Report toLADCO Regional Air Quality Workshop November 16, 2005 Mark Strimbu Charlotte Read Co-Chairs

  2. Lake & Porter counties • NW corner of Indiana • Part of Chicago CMSA for 1-hr. O3 NAA • 1-hr. O3 NAAQS • Severe-17 NAA • Numerous existing control measures • Large Number of sources controlled • Air quality improved • AQSC involved

  3. Lake & Porter counties • 8-hr. O3 NAAQS • Subpart 2/Moderate NAA • Attainment date June 15, 2010 • June 15, 2005 8-hr. O3 NAAQS replaces 1-hr. O3 NAAQS • 1-hr. O3 controls remain in place • PM2.5 NAAQS • Nonattainment • PM10 • Attainment

  4. NW Indiana AQSC • Goal • Address Lake & Porter PM2.5 & 8-hr. O3 nonattainment • Mission • Review, prioritize, select potential control measures for recommendation to IDEM for inclusion in SIP development • Mission (revised) • Review, prioritize, select potential control measures for recommendation to IDEM for inclusion in rule development to meet RFP requirement

  5. NW Indiana AQSC • Participants • Subcommittee of NIRPC EMPC • Local companies • Environmental Community Representatives • Municipalities/Government • Educational institutions • IDEM

  6. NW Indiana AQSC • Process • 1-hr O3 AQSC reconvened for 8-hr. O3NAAQS • EMPC roundtable group develops list of potential control measures • EMPC modified/prioritized measures for AQSC evaluation • AQSC meetings every 2 months, increased to once per month • Evaluation of additional potential control measures • Presentations by knowledgeable parties in subject area • Group viability – cost, acceptability, emission reduction, affected area, etc. • “Granddaddy” matrix • Prioritization - Tier 1, Tier 2, Tier 3 • Ranking/Scoring scheme: Quantitative/Qualitative/Hybrid • Recommendations => EMPC => NIRPC=> IDEM • IDEM rulemaking process

  7. NW Indiana AQSC • Status • Rankings completed Sept. 19, 2005 • EMPC approved recommendations Sept. 19, 2005 • NIRPC Board approves submission of potential control measures to IDEM October 20, 2005 • IDEM indicated other measures are in the works that may reduce RFP target • May impact selection, order, implementation of recommendations • AQSC will meet as needed through rule making process

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