State of California
AIR RESOURCES BOARD
California State University, Los Angeles
Student Union Building, Room 313
5155 University Drive
Los Angeles, CA
November 19, 1981
10:00 a.m.
AGENDA
Page
81-24-1 Status Report: Ozone Modeling for the South 001
Coast Air Basin.
81-24-2 Public Hearing to Consider Amendments to Title 181
13, Sections 1960.1 and 1960.15, California
Administrative Code, and Related Test Procedures,
Regarding Oxides of Nitrogen Exhaust Emissions
Standards for 1983 and Subsequent Model Year
Passenger Cars, Light-Duty Trucks, and Medium-
Duty Vehicles.
Supplemental Staff Report 235
81-24-3 Report to the Legislature on Air Resources 266
Board's Oversight of Stationary Source Control
Program.
81-24-4 Other Business
a. Closed Sessions
1. Personnel (as authorized by State Agency Open
Meeting Act).
2. Litigation (Pursuant to the attorney-client
privilege).
b. Research Proposals
c. Delegations to Executive Officer
SMOKING NOT PERMITTED AT MEETINGS OF THE CALIFORNIA AIR RESOURCES
BOARD.
ITEM NO.: 81-24-1
Status Report: Ozone Modeling for the South Coast Air Basin.
TABLE OF CONTENTS
Page
INTRODUCTION, FINDINGS AND RECOMMENDATIONS
A. INTRODUCTION I
B. FINDINGS iii
C. RECOMMENDATION ON MODEL USE x
I. INTRODUCTION 1
II. MODELING APPROACHES TO ESTIMATE OZONE IMPACTS 4
A. TYPES OF AIR QUALITY MODELS 4
B. STATISTICAL - EMPIRICAL MODELS 7
C. DETERMINISTIC - MECHANISTIC MODELS 11
III. AIR QUALITY MODELING FOR THE 1979 SIP 20
IV. VALIDATION OF THE SAI AIRSHED MODEL 26
A. INTRODUCTION 26
B. DESCRIPTION OF THE SAI MODEL 28
C. VALIDATION STUDIES OF THE SAI AIRSHED MODEL 32
D. PREVIOUS SAI AIRSHED MODEL VALIDATION STUDIES 38
E. PERFORMANCE EVALUATION RESULTS 38
F. SAI AIR SHED VALIDATION STUDIES FUNDED BY THE AIR
RESOURCES BOARD 52
G. INTERPRETATION OF MODEL VALIDATION RESULTS 58
V. SELECTION OF MODEL SENSITIVITY STUDIES AND CONTROL
STRATEGIES 61
A. INTRODUCTION 61
B. DAY SELECTION AND STUDY REGION 64
VI. RESULTS OF CONTROL STRATEGIES AND SENSITIVITY ANALYSIS 65
A. HYDROCARBON CONTROLS 68
B. HYDROCARBON AND NOx CONTROLS 70
C. NOx CONTROLS 74
D. EQUAL HYDROCARBON AND NOx CONTROLS 77
E. MAXIMUM HYDROCARBON CONTROLS 84
F. OTHER STRATEGIES AND SENSITIVITIES 89
VII. REFERENCES
VIII.APPENDICES
Appendix A Boundary Conditions
Appendix B Validation Run 0
Appendix C Validation Run 10
Appendix D Validation Run 12
Appendix E Boundary Conditions Sensitivities and Extreme
NOx Reductions.
ITEM NO.: 81-24-3
Report to the Legislature on Air Resources Board's Oversight of
Stationary Source Control Program.
TABLE OF CONTENTS
Page
I. Introduction - Origins and Purpose of the Report. . . . . .1
II. Executive Summary . . . . . . . . . . . . . . . . . . . . .4
III. Conflict Management and Resolution. . . . . . . . . . . . 10
IV. Rule Development and Approval . . . . . . . . . . . . . . 11
A. Rule Development - Suggested Control Measures. . . . 12
B. ARB Procedure for Processing Rules and Regulations
Received from APCDs. . . . . . . . . . . . . . . . . 13
C. ARB Action to Amend Rules. . . . . . . . . . . . . . 16
V. Project Review and Permitting . . . . . . . . . . . . . . 19
VI. Enforcement . . . . . . . . . . . . . . . . . . . . . . . 26
VII. Development and Projection of Emission Estimates. . . . . 35
VIII.State Financial Assistance (Subvention) . . . . . . . . . 37
APPENDIX A - Memorandum of Understanding
APPENDIX B - Subvention Program Background