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  • dispersion modeling

    baseline actual emissions

    Public Participation

    PSD

    Workbook

    A Practical Guide to Michigans Prevention of

    Significant Deterioration Regulations

    Michigan Department of Environmental Quality

    www.michigan.gov/deq

    Rev. 5/2014

  • The Michigan Department of Environmental Quality (MDEQ) will not discriminate against any individual or group on the basis of race, sex, religion, age, national origin, color, marital status, disability or political beliefs. Question or concerns should be directed to Quality of Life Human Resources, P.O. Box 30473, Lansing, MI 48909

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    Contents DISCLAIMER ............................................................................................................................. 7

    INTRODUCTION ........................................................................................................................ 8

    CHAPTER 1: AN OVERVIEW OF PSD.................................................................................... 11

    Overview.....................................................................................................................................................13

    Important Terms ........................................................................................................................................14

    CHAPTER 2: PSD APPLICABILITY ........................................................................................ 25

    Definition of Source ..................................................................................................................................27

    Major and Minor Sources......................................................................................................................... 28

    New and Existing Sources....................................................................................................................... 30

    Modifications vs. Excluded Changes and Projects ..............................................................................30

    Significant Change....................................................................................................................................31

    Determining the Net Emissions Change ...............................................................................................33

    Changes not Subject to Applicability......................................................................................................33

    CHAPTER 3. BASELINE ACTUAL EMISSIONS .................................................................... 35

    BAE for New and Existing Emissions Units ..........................................................................................37

    BAE for EUSGU ........................................................................................................................................38

    BAE for Non-EUSGU................................................................................................................................39

    CHAPTER 4: APPLICABILITY TESTS BASED ON EMISSIONS CHANGES ........................ 43

    The Actual to Potential Test (A2P) .........................................................................................................45

    A2P Example .........................................................................................................................................46

    The Actual to Projected Actual Test (A2A) ...........................................................................................46

    Example A2A .............................................................................................................................................54

    CHAPTER 5: NETTING .......................................................................................................... 65

    Netting, Step by Step............................................................................................................................... .67

    Step 1: Identify the Contemporaneous Period .....................................................................................68

    Step 2: Determine the Creditable Changes ..........................................................................................69

    Step 3: Evaluate the Creditable Changes .............................................................................................69

    Step 4: List the Creditable Changes ......................................................................................................69

    Step 5: Determine BAE for Creditable Changes ..................................................................................69

    Step 6: Determine the Post-Change Potential Emissions for Creditable Changes ........................70

    Step 7: Determining the Magnitude of Each Creditable Change.......................................................70

    Step 8: Determining the Net Emissions Change..................................................................................70

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    CHAPTER 6: PLANTWIDE APPLICABILITY LIMITS............................................................. 75

    Definition of a Plant Wide Applicability Limit (PAL) .............................................................................77

    Purpose of the PAL...................................................................................................................................77

    Obtaining a PAL ........................................................................................................................................77

    Setting the PAL .........................................................................................................................................78

    PAL Permit Application ............................................................................................................................ 78

    Increasing the Level of the PAL .............................................................................................................. 79

    How to Develop the PAL Monitoring, Recordkeeping, and Reporting (MRR) Plan........................80

    PAL Effective Period and Renewal ........................................................................................................80

    CHAPTER 7: BEST AVAILABLE CONTROL TECHNOLOGY ................................................ 83

    Introduction ................................................................................................................................................85

    Top-Down BACT .......................................................................................................................................85

    CHAPTER 8: AIR QUALITY DISPERSION MODELING ......................................................... 95

    Introduction ................................................................................................................................................97

    Air Quality Models .....................................................................................................................................97

    Model Suitability ........................................................................................................................................97

    Levels of Model Sophistication .............................................................................................................98

    MDEQ Preferred Screening Model: AERSCREEN .......................................................................... 99

    MDEQ Preferred Refined Models ......................................................................................................... 99

    PSD Modeling for Criteria Pollutants ...................................................................................................101

    Significant Impact Level ......................................................................................................................... 101

    PSD Increment Analysis ........................................................................................................................ 102

    Background Concentration Pre-Construction Monitoring .................................................................104

    Secondary Pollutant Impacts ................................................................................................................104

    Modeling Protocol Submittal.................................................................................................................. 105

    CHAPTER 9: ADDITIONAL IMPACT ANALYSES ................................................................ 107

    Introduction ..............................................................................................................................................109

    Growth Analysis.......................................................................................................................................109

    Soils and Vegetation............................................................................................................................... 109

    Visibility.....................................................................................................................................................110

    Class I Areas Impact Analysis............................................................................................................... 110

    CHAPTER 10: DECISION-MAKING AND PUBLIC PARTICIPATION ................................... 113

    Introduction .............................................................