ACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 What Is The Purpose Of This Document? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Does The Guidance In This Document Apply To Me? . . . . . . . . . . . . . . . . . . 2

1.3 How Does The Perceived Nature Of Ozone, PM, and Regional Haze Affect

My Attainment Demonstration? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3.1 Ozone, PM, and Regional Haze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3.2 How is Measuring and Modeling Particulate Matter Different (and

Often More Complicated) than Ozone? . . . . . . . . . . . . . . . . . . . . . . . . 5

1.4 What Topics Are Covered In This Guidance? . . . . . . . . . . . . . . . . . . . . . . . . 11

Part I. How Do I Use Results Of Models And Other Analyses To Help

Demonstrate Attainment? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.0 What Is A Modeled Attainment Demonstration?--An Overview . . . . . . . . . . . . . . . 15

2.1 What Is The Recommended Modeled Attainment Test for Ozone and PM2.5?-

An Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.2 What Is The Recommended Modeling Assessment For Regional Haze?- An

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.3 What Does A Recommended Supplemental Analysis/Weight Of Evidence

Determination Consist Of? --An Overview

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.4 Why Should A Model Be Used In A “Relative” Sense And Why May

Corroboratory Analyses Be Used In A Weight Of Evidence Determination?18

 

 

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