State of California
                      AIR RESOURCES BOARD
                                
                  Solid Waste Management Board
                      Conference Room 300
                        1020 9th Street
                         Sacramento, CA
                                
                       December 15, 1981
                           10:00 a.m.
                                
                             AGENDA

                                                             Page

81-26-1   Public Meeting to Consider Information Relating     001
          to Development of a State Ambient Air Quality
          Standard for Fine or Inhalable Particles.

81-26-2   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.: 81-26-1

Public Meeting to Consider Information Relating to Development of
a State Ambient Air Quality Standard for Fine or Inhalable
Particles.

                             CONTENTS

                                                             Page

CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .I

I.   INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . .1

II.  PHYSICS AND CHEMISTRY OF PARTICLES. . . . . . . . . . . . .4

III. SOURCES OF EMISSIONS OF PARTICULATE MATTER. . . . . . . . 18

IV.  SAMPLE METHODS FOR PARTICULATE MATTER . . . . . . . . . . 30

V.   ENVIRONMENTAL CONCENTRATIONS AND AIR QUALITY TRENDS . . . 46

VI.  RESPIRATORY TRACT PARTICLE DEPOSITION AND CLEARANCE . . . 59

VII. MECHANISMS AND SITES OF TOXICITY. . . . . . . . . . . . . 76

VIII.ANIMAL TOXICOLOGY STUDIES . . . . . . . . . . . . . . . . 83

IX.  HUMAN CLINICAL STUDIES. . . . . . . . . . . . . . . . . .103

X.   EPIDEMIOLOGY STUDIES. . . . . . . . . . . . . . . . . . .109

XI.  VISIBILITY EFFECTS. . . . . . . . . . . . . . . . . . . .130

APPENDICES . . . . . . . . . . . . . . . . . . . . . . . . . . . 

     Appendix A.  Glossary . . . . . . . . . . . . . . . . . .A-1

     Appendix B.  Public Meeting Notice. . . . . . . . . . . .B-1