Copyright 2008 Air & Waste Management Association

Exposure Science and Its Applications for Effective Environmental Managementby S.T. RaoExposure is the link between environmental pollution and human/ecosystem health. Exposure science entails understanding the scientific processes that affect source emissions, transport and fate, spatio-temporal variability in the ambient concentrations, levels of contaminants that people breathe in, and stressors to sensitive ecosystems. This month, EM considers the need for advancing exposure science and its applications to better protect human and ecosystem health, and the resulting challenges confronting environmental managers.Page 7

Exposure Concepts for Environmental Managementby Linda Sheldon, Rochelle Araujo, Florence Fulk, and Fred Hauchman, U.S. Environmental Protection AgencyPage 8

The Importance of Modeling in Exposure and Risk Assessmentsby Julian Levy and Richard Reiss, Exponent Inc.Page 14

Characterizing Variability and Uncertainty in Exposure Assessments Improves Links to Environmental Decision-Makingby Halûk Özkaynak and Bryan Hubbell, U.S. Environmental Protection Agency; and H. Christopher Frey, North Carolina State UniversityPage 18

The Role of Exposure Science in Air Quality Managementby Tim Watkins and S.T. Rao, U.S. Environmental Protection Agency; and Ron Wyzga, EPRIPage 24

Assessing the Public Health Impact of Regional-Scale Air Quality Regulationsby Valerie Garcia, Neal Fann, Richard Haeuber, and Phil Lorang, U.S. Environmental Protection AgencyPage 29

Assessing Exposure to Waterborne Pathogensby Fred S. Hauchman, U.S. Environmental Protection AgencyPage 36

Exposure Reconstruction: A Framework for Advancing Exposure Assessmentby Florence Fulk, Marsha Morgan, and John Kenneke, U.S. Environmental Protection AgencyPage 39

COLUMNSPM File................................................ 42Surveying Client Satisfactionby David Elam

ASSOCIATION NEWSIn Memoriam......................................... 6 John S. Lagarias (1921–2008)

Board of Directors Election Results ................................. 43

BAQ 2008 Workshop Explores Climate Change Solutions for Asia .... 44

Members in the News ....................... 44 Joseph Martone and Christi Veleta

The Member Minute ........................... 56 A. Gwen Eklund

DEPARTMENTSMessage from the President ............................4IUAPPA Report ...............................................45EPA Research Highlights ................................46Call for Abstracts ...........................................47Washington Report ........................................48Canadian Report ............................................49News Focus ...................................................50Advertisers’ Index ..........................................52Professional Development Programs .............53Calendar of Events .........................................55 JA&WMA Table of Contents............................55

EM, a publication of the Air & Waste Management Association (ISSN 1088-9981), is published monthly with editorial and executive offices at One Gateway Center, 3rd Floor, 420 Fort Duquesne Blvd., Pittsburgh, PA 15222-1435. ©2008 Air & Waste Management Association. All rights reserved. Materials may not be reproduced, redistributed, or translated in any form without prior written permission of the Editor. Periodicals postage paid at Pittsburgh and at an additional mailing office. Postmaster: Send address changes to EM, Air & Waste Management Association, One Gateway Center, 3rd Floor, 420 Fort Duquesne Blvd., Pittsburgh, PA 15222-1435. GST registration number: 135238921. Subscription rates are $255/year for nonprofit libraries and nonprofit institutions and $385/year for all other institutions. Additional postage charges may apply. Please contact A&WMA Member Services for current rates (1-800-270-3444). Send change of address with recent address label (6 weeks advance notice) and claims for missing issues to the Membership Department. Claims for missing issues can be honored only up to three months for domestic addresses, six months for foreign addresses. Duplicate copies will not be sent to replace ones undelivered through failure of the member/subscriber to notify A&WMA of change of address. A&WMA assumes no responsibility for statements and opinions advanced by contributors to this publication. Views expressed in editorials are those of the author and do not necessarily represent an official position of the Association.

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