1. Air Quality Laboratory St.Louis Supersite Project Update Meg N.S. Yu Professor Jay R. Turner Environmental Engineering Program Washington University in St. Louis Sustainable Air Quality Monday Presentation April 9, 2001

2. Air Quality Laboratory Fine Particulate Matter Monitoring Strategy PM 2.5 Compliance Network (mass concentration) PM 2.5 Speciation Network Supersites Program

3. Air Quality Laboratory USEPA Fine Particulate Matter Supersites Program

4. Air Quality Laboratory

5. Supersite Monitoring Locations

6. Air Quality Laboratory Supersite Locations and Mass/Speciation Sites

7. Air Quality Laboratory East St. Louis Core Site

8. Air Quality Laboratory N. St. Louis City (Margaretta) Site Urban Residential St. Louis Supersite Satellite Location – Will monitor ~4 wks of each quarter year Location of previous March- Midwest Study

9. Air Quality Laboratory St. Louis - Midwest Supersite Collaborators Georgia Institute of Technology U.S. EPA Region VII Missouri Department of Natural Resources Illinois Environmental Protection Agency St. Louis City Air Pollution Control Program St. Louis County Department of Health Siting Cooperation Illinois Department of Transportation City of St. Louis Mineral Area College

10. Air Quality Laboratory St. Louis Supersite Project Objectives USEPA identified three overarching objectives which each Supersite must address. The following summarizes the St. Louis Supersite approach to these objectives (1) improved understanding of source-receptor relationships to support control strategy development –St. Louis is an urban island, broadly representative of the urban Midwest (2) support health effects and exposure studies –integration with three large health effects programs (nine separate studies) (3) evaluation of emerging sampling methods –battery of advanced measurements for aerosol physical properties and chemical composition –emphasis on methods with demonstrated or potential ability to operate reliably for extended periods with limited attendance

11. Air Quality Laboratory Aerosol Physical Properties (examples) Near-Real Time Automated Measurements –aerosol size distributions (5-min)… core –aerosol integral moments (~1-sec)… core and satellite Number Scattering Electrical Charge Assume PSD shape (e.g., lognormal) other aerosol properties (e.g., surface area) OPC = optical particle counter SMPS = scanning mobility particle spectrometer

12. Air Quality Laboratory Aerosol Chemical Properties (examples) Semi-continuous Automated Measurements (hourly or better) Circles denote measured species; also PM 2.5 mass, and 15 elements retrospectively

13. Air Quality Laboratory Example - Continuous Bulk Nitrate Aerosol Data from PILS-IC Atlanta Supersite - August 1999

14. Air Quality Laboratory Aerosol Physical/Chemical Properties (examples) Time-Integrated Substrate Methods…24-hour –PM 1, PM 2.5, PM 10 mass –PM 2.5 speciation (ions, elements, EC/OC) –PM 2.5 organics speciation –Coarse PM elements, EC/OC –Toxicological sampler (trichot) Also… –Precursor gases (e.g., NH 3, H 2 SO 4, HNO 3 )… 24-hour –Volatile Organic Compounds… 24-hour –Criteria gases…5-min (IEPA) –Meteorology (WS, WD, RH, T, P, Solar Rad, Precip)

15. Air Quality Laboratory Integration with Exposure & Health Effects Studies

16. Air Quality Laboratory Integration with Exposure & Health Effects Studies measurement of personal and indoor exposures H. Suh & P. Koutrakis (EPRI Exposure Studies) cardiac vulnerability in potentially susceptible subjects F. Speizer (NIEHS Program Project) implantable defribrillators detected arrhythmias D. Dockery (NIEHS Program Project) conditions in elderly which predispose towards acute adverse effect of particulate exposure J. Schwartz (EPA PM Center) chronic effects of particulate exposure D. Dockery (EPA PM Center) in vitro toxicity of St. Louis particulate matter L. Kobzik & P. Koutrakis (EPA PM Center)

17. Air Quality Laboratory Core Site Status – as of March 18, 2001 Equipment installation starts next week; 3-4 week shakedown period…

18. Air Quality Laboratory For More Information… Jay R. Turner Department of Chemical Engineering Campus Box 1198 Washington Universitytel: 314-935-5480 One Brookings Drivefax: 314-935-5464 St. Louis, MO 63130email: JRTURNER@SEAS.WUSTL.EDU INTERNET SITES St. Louis - Midwest Supersite http://capita.wustl.edu/StLSuperSite/ Washington University Air Quality Laboratory follow link at: http://www.seas.wustl.edu/user/jrturner/ Air Quality Laboratory