1 / 15

Regulatory Requirements For Modeling

Regulatory Requirements For Modeling . Air Quality Model Estimates. Developing Air Pollution Control Plans Assessment of Environmental Impacts Projecting Future Air Quality Trends. Regulatory Requirements for Modeling . Air Quality Modeling. Set of Mathematical Equations

benito
Download Presentation

Regulatory Requirements For Modeling

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Regulatory Requirements For Modeling

  2. Air Quality Model Estimates • Developing Air Pollution Control Plans • Assessment of Environmental Impacts • Projecting Future Air Quality Trends

  3. Regulatory Requirements for Modeling

  4. Air Quality Modeling • Set of Mathematical Equations • Logically connect Emission Rate (Q) to Ambient Air Quality Concentration () • Monitoring Site – Representative location chosen for sampling • Receptor Site – Model prediction of pollutant concentration

  5. Need for Air Quality Model • Limitations in Spatial and Temporal Coverage • Insufficient Monitoring Data to set Emission Limits • Analyze the impacts of new sources that do not yet exist • Diversity dictate against modeling “Cookbook”

  6. Suitability of Models

  7. Source : EPA DREP

  8. Levels of Models • Screening Model- Simple estimation provides conservative estimates • Refined Model- More refined least theoretical results • Screening Technique followed by Refined Model • Identify “appropriate reviewing authority”

  9. Prevention of Significant Deterioration PSD- 40 CFR § 52.21 • New Major Stationary Source and Major Modification to Existing Source • Ensure compliance with NAAQS and PSD air increments • Preconstruction Permit Application • Best Available Control Technology (“BACT”) • Ambient Air Quality Impact Analysis: Modeling • Impacts on Soils, Vegetation, and Visibility • Class 1 Area Impacts • Public Comments/Participation

  10. Air Quality Monitoring Requirements 40 CFR § 52.21(i)(5) PSD De Minimis Monitoring Concentration

  11. Air Quality Impact Analysis (AQIA)40 CFR§ 52.21(m) • AQIA shall be based on Guidelines on Air Quality Models – 40 CFR § 51 Appendix W

  12. Additional Impact & PSD Class 1 Analysis • Growth • industrial, residential, commercial • Soil and Vegetation Impacts • harmful effects to resident species • Visibility Impairment • local visibility impairment PSD Class I Areas • Notice to Federal Land Managers (FLM) • Air Quality Related Values (“AQRV”)-FLAG • Contribution to regional haze, acid deposition

  13. New Source Review (NSR)Tribal Minor NSR 40 CFR § 49.151 • Reviewing Authority Trigger AQIA • local air quality condition • minor source or modification would cause or contribute to a NAAQS or PSD increment violation • conduct the AQIA using the dispersion models and procedures of part 51, Appendix W • AQIA cause or contribute to a NAAQS or PSD • Reduce or mitigate impact • Non-Attainment NSR (“NANSR”)

  14. Federal/State/Tribal Implementation Plan • Designation • NAAQS Implementation Schedules • Emission Inventories • Attainment Demonstrations • Strategies and Technology to Reduce Emissions • NSR and PSD • Regional Haze

  15. Modeling Guidance Resourceshttp://www.epa.gov/ttn/scram/guidance_permit.htm • 40 CFR Part 51 Appendix W • Air Quality Analysis Checklist • Guideline for Determination of Good Engineering Practice Stack Height • Regional/State/Local Modelers Workshop

More Related