Final Program - Society for Risk Analysis

kind (almost always, similar to the material without added ENM), nano-scale particleswith some carrier matrix and some ENM (often), and finally, ENM alone (rare). Thisreview of the nanomaterial release literature illustrates a data gap relevant to the fieldof environmental risk assessment. Perhaps most critical, our review suggests that fateand transport modeling, exposure assessment, and risk assessment frameworks ingeneral for ENM uses should not be based on pristine engineered nanoparticles, butrather should be based on the released composites of ENM and the carrier matrix.M3-G.2 Furgal C, Driedger SM, Jardine CG; chrisfurgal@trentu.caTrent UniversityEVALUATING TRUST OF CONTAMINANTS AND FOOD MESSAGINGIN INUIT COMMUNITIESThe presence of contaminants (heavy metals and organic contaminants) in theCanadian Arctic environment has received increasing attention over the past few decades,most notably due to the potential risks to human health from country food(food from the land and water) contamination and in utero exposure to the fetus.Since the late 1970s federal, and more recently, Territorial and regional healthy authoritieshave been providing advisories and advice to northern Aboriginal populationsregarding their consumption of these food items as a result. Initially premisedsolely on the understanding of the risks posed to adult, and then adult and fetal andchild health, these messages have had to evolve to consider the growing and substantialevidence supporting the nutritional, social and other benefits of consumption ofthese food items as well as the current knowledge of risks posed by the consumptionof such things as fish containing methyl mercury or marine mammal blubbercontaining PCBs. The decision making process and communication of this evolvingbody of knowledge poses significant challenges for environmental and public healthprofessionals. This case study looks at the factors influencing trust in decision makeractions associated with the release of information on country food consumption andenvironmental contaminants in the Inuit community of Kuujjuaq, Nunavik. Kuujjuaqis a regional centre of the Inuit region of Nunavik, northern Quebec. While being aregional centre with higher than regional average levels of participation in wage earningemployment and access to store foods, the Inuit population is still strongly connectedto the land and sea through hunting, fishing, collecting and other subsistenceactivities. As a result, communication messaging around country food safety strikes atthe heart of Inuit culture and daily life. Preliminary results from the pilot testing andinitial focus groups with community residents assessing factors influencing trust inhealth messaging on this topic will be discussed.102M3-B.1 Gaborek BJ; Bonnie.J.Gaborek@usa.dupont.comDuPont Haskell Global Centers for Health & Environmental SciencesUP IN THE AIR: COMPARISON OF EXPOSURE TOOLS FROMACROSS THE GLOBE THAT CAN PREDICT WORKER INHALATIONEXPOSURESA number of regulatory authorities across the globe, to include the U.S EnvironmentalProtection Agency (USEPA) and the European Chemicals Agency (ECHA)have integrated exposure estimation tools into their risk assessment programs. Forexample, ECHA has specified several tools to evaluate worker inhalation exposuresfor compliance with their Registration, Evaluation, Authorisation and Restriction ofChemicals (REACH) regulation. These tools include the European Centre for Ecotoxicologyand Toxicology of Chemicals Targeted Risk Assessment tool (ECETOCTRA), the Stoffenmanager exposure model, and the Advanced REACH Tool (ART).Similarly, the USEPA uses the Chemical Screening Tool for Exposures & EnvironmentalReleases (ChemSTEER) to estimate conservative, occupational inhalationexposures and to assess the potential risks that chemicals may pose to workers. Ahost of additional tools, such as the Exposure-Fate Assessment Screening Tool (E-FAST), the Multi-Chamber Concentration & Exposure Model (MCCEM), the WallPaint Exposure Assessment Model (WPEM), and The Netherland’s National Institutefor Public Health and the Environment ConsExpo consumer tool are also availableto predict inhalation exposures, but were designed primarily to estimate risks toconsumers when using products and articles in residential settings. Some of thesetools, however, may be adapted for use in predicting worker inhalation exposures.A thorough comparison of each of these tools was made: • To identify the minimalinput data set required for implementation, • To clarify the context in which each toolis relevant, • To define the limitations of each tool, and • To ascertain if adaptationsare possible for expanding the tool’s applicability. Based on this evaluation, a series ofdecision trees were developed to facilitate the selection of the proper tool for predictingworker inhalation exposures dependent on the risk assessment requirements fora particular situation.W1-B.1 Gallagher DL, Ebel E, Gallagher OD, LaBarre D, Williams M, GoldenN, Kause J, Deerfield K; dang@vt.eduVirginia TechINCORPORATING UNCERTAINTY WHEN EVALUATING RISK AS-SESSMENT METRICS: MODELING LISTERIA MONOCYTOGENESCONTAMINATION IN READY-TO-EAT DELI MEATSIn order to investigate uncertainty inclusion in food safety metrics, a secondorder Monte Carlo model of Listeria monocytogenes in ready-to-eat deli meats thatsimulated Listeria concentrations from the food processing plant through transport,retail, the consumer’s home, and consumption was developed. The model accounted