1. Draft STI-900242-1988-DWB By Hilary H. Main Paul T. Roberts Sonoma Technology, Inc. 1360 Redwood Way, Suite C Petaluma, CA 94954 Prepared for the U.S. Environmental Protection Agency Office of Air Quality Planning and Standards Research Triangle Park, NC February 2001 PM 2.5 DATA ANALYSIS WORKBOOK

2. Draft Volume 2 By Hilary H. Main Paul T. Roberts Sonoma Technology, Inc. 1360 Redwood Way, Suite C Petaluma, CA 94954 Prepared for the U.S. Environmental Protection Agency Office of Air Quality Planning and Standards Research Triangle Park, NC October 1999 999154-1922-DWB1

3. PM 2.5 Data Analysis Workbook Draft Volume 1 Introduction Data Validation Attainment Characterizing PM By: Hilary H. Main Paul T. Roberts Sonoma Technology, Inc. Petaluma, CA Prepared for: U.S. EPA Research Triangle Park, NC October 1999 PM 2.5 Data Analysis Workbook Draft Volume 2 Trends Source Apportionment EI Evaluation [Control Strategies] By: Hilary H. Main Paul T. Roberts Sonoma Technology, Inc. Petaluma, CA Prepared for: U.S. EPA Research Triangle Park, NC October 1999