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APPLICATION OF MODELS FOR SIP ATTAINMENT TEST and NEW SOURCE REVIEW

APPLICATION OF MODELS FOR SIP ATTAINMENT TEST and NEW SOURCE REVIEW. Denis Lohman EPA Region 3 February 20, 2008. Consistency. Objective Demonstrate attainment and maintenance of NAAQS Accuracy Replicability Time Space. SIP Attainment. Demonstrate performance of model

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APPLICATION OF MODELS FOR SIP ATTAINMENT TEST and NEW SOURCE REVIEW

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  1. APPLICATION OF MODELS FOR SIP ATTAINMENT TEST andNEW SOURCE REVIEW Denis Lohman EPA Region 3 February 20, 2008

  2. Consistency • Objective • Demonstrate attainment and maintenance of NAAQS • Accuracy • Replicability • Time • Space

  3. SIP Attainment • Demonstrate performance of model • Baseline emissions • Estimate baseline air quality • Calculate future air quality • Project future emissions • Project future air quality • RRF = Future ÷ Baseline • Multiply Design Concentrations by RRF to Estimate Future Design Concentration

  4. New Source Review • No modeling in nonattainment areas • Attainment Areas • Allowable Emissions • Add background • Cause/contribute to violations? • Interim Guidance – Use PM10 program as surrogate for PM2.5

  5. O3, PM, RH Guidance Receptor oriented Actual emissions Many sources NAA IC/BC Relative results Design Site Test Appendix W Source oriented Allowable emissions Few sources SIA +Background Absolute results Ambient Air Test SIP versus NSR

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