St. Louis - Midwest Particulate Matter Supersite

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St. Louis - Midwest Particulate Matter Supersite

• Project Overview
• February/March 2000 Update

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St. Louis - Midwest Supersite An Overview

• USEPA Particulate Matter Supersites Program
• Phase I Supersites
• Atlanta, GA
• Fresno, CA
• Phase II Supersites
• New York City, NY
• Baltimore, MD
• Pittsburgh, PA
• St. Louis, MO
• Houston, TX
• Fresno, CA
• Los Angeles, CA

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St. Louis - Midwest Supersite Consortium

• Washington University
• J. Turner (PI), W. White (Co-PI), E. Macias, B.
  Schichtel
• Desert Research Institute
• J. Chow (Co-PI), J. Watson
• Electric Power Research Institute
• T. Bahadori
• Harvard University School of Public Health
• P. Koutrakis (Co-PI), G. Allen
• University of Maryland
• J. Ondov (Co-PI)
• University of Minnesota
• P. McMurry (Co-PI)
• University of Wisconsin
• J. Schauer

denotes Executive Management Team
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St. Louis Supersite Project Objectives

• USEPA identified three overarching objectives
• which each Supersite must address
• (1) improved understanding of source-receptor
• relationships to support SIP 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
• (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

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St. Louis Supersite Monitoring Strategy

• sustained measurements for a full year, CY 2001
• emphasis on temporal resolution of aerosol
  physical and chemical properties
• core site, located in north St. Louis City
• urban residential neighborhood
• full suite of measurements
• movable platform rotating between three satellite
  sites
• visit each site for 3-4 weeks each quarter during
  CY 2001
• implement a subset of the core site measurement
  suite at the satellite sites

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Monitor Sites
core site (fixed platform)
plus three satellite sites, each visited by a
movable platform for 3-4 weeks per quarter
(locations TBD)
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St. Louis Supersite Sampling Measurements
aerosol chemical properties
other measurements
aerosol physical properties

• in situ methods
• aerosol size dist.
• (3nm-10mm) / 5 min
• integral moments (number, light scat., elec.
  charge) / 2 sec
• aethalometer / 5 min
• fine mass (CAMMS) / 1 hr
• substrate methods
• PM1, PM2.5, PM10 mass by various samplers / 24 hr

• in situ methods
• sulfate / 10 min
• nitrate / 10 min
• EC/OC / 1 hr
• substrate methods
• ions precursor gases (HEADS) / 24 hr
• EC/OC / 24 hr
• fine/coarse metals / 24 hr
• selected elements retrospectively / 1 hr
• organic compounds retrospectively / 24 hr
• tox. sampling / 1 wk

• airborne bioallergens / 24 hr
• meteorological parameters (10m 30 m), 5 min
• criteria gas pollutants / 1 hr (nominal)

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St. Louis Supersite 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)

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St. Louis Supersite Other Features Timeline

• Other Features
• collaboration with USEPA researchers currently
  being formalized
• integration with EPA Region VII St. Louis
  community based air toxics initiative (risk based
  air screening)
• provide a platform attractive for single-particle
  analysis measurements (e.g., testing,
  calibration)
• historical context using data from previous
  studies (e.g., RAPS/RAMS, Harvard Six
  Cities)
• Schedule
• CY2000 planning, installation and shake-down
• CY2001 full year of sustained measurements
• (1/1/01 through 12/21/01)
• CY2002 sample analysis, data analysis
• CY2003 data analysis and reporting

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St. Louis - Midwest Supersite

• for more information
• St. Louis - Midwest Supersite on the WWW at -
• http//capita.wustl.edu/StLSuperSite/
• (to be activated circa March 1, 2000)
• contact information...
• Jay R. Turner
• Department of Chemical Engineering
• Campus Box 1198
• Washington University
• One Brookings Drive
• St. Louis, MO 63130-4899
• tel [phone]
• fax [phone]
• email JRTURNER_at_SEAS.WUSTL.EDU