TABLE OF CONTENTS

EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . ES-1

PHASE 1 RECOMMENDATION SUMMARY . . . . . . . . . . . ES-5

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . 1-1

2. EXISTING MODEL COMPARISONS AND EVALUATIONS . . . . . . 2-1

3. CANDIDATE MODELS . . . . . . . . . . . . . . . . . . . 3-1

3.1 MESOPUFF-II . . . . . . . . . . . . . . . . . . . 3-1

3.2 Acid Rain Mountain Mesoscale Model (ARM3) . . . . 3-2

3.3 Model Comparison and Further Technical

Assessment . . . . . . . . . . . . . . . . . . . 3-4

3.3.1 Initial Air Quality Model Comparisons . 3-4

3.3.2 Meteorological Processor Comparisons . 3-6

3.3.2.1 Wind Fields . . . . . . . . . . . 3-7

3.3.2.2 Mixing Height . . . . . . . . . 3-19

3.3.2.3 Meteorological Field Discussion 3-24

3.3.3 Further Air Quality Model Comparisons 3-26

3.3.3.1 Model Comparison Discussion . . 3-28

4. REGULATORY CONSIDERATIONS FOR THE USE OF LONG RANGE

TRANSPORT MODELS . . . . . . . . . . . . . . . . 4-1

5. INTERIM RECOMMENDATIONS . . . . . . . . . . . . . . . 5-1

5.1 Protocol for Level I Long Range Transport

Analysis . . . . . . . . . . . . . . . . . . . . 5-2

5.1.1 Level I Long Range Transport

Techniques for Analyzing

Increment and NAAQS . . . . . . . 5-4

5.1.2 Level I Analysis Technique for

Evaluating the Effects of Long

Range Transport and Regional

Visibility . . . . . . . . . . . . 5-4

5.1.3 Level I Analysis of Long Range

Transport and Depositional

Impacts . . . . . . . . . . . . . 5-5

5.2 Protocol for Level II Long Range Transport

Analysis . . . . . . . . . . . . . . . . . . . . 5-7

5.2.1 Increment and NAAQS Cumulative Long

Range Transport Analyses . . . . 5-10

5.2.2 Visibility Analyses . . . . . . . . . 5-12

5.2.3 Analysis of Other AQRVs . . . . . . . 5-13

5.2.4 Analysis of Primary Emissions of Fine

Particulates . . . . . . . . . . . . 5-13

6. SUMMARY . . . . . . . . . . . . . . . . . . . . . . . 6-1

REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . R-1

 

 

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