Joshua R Maskrey, CIH

Current Position Summary of Experience Senior Health Scientist Mr. Joshua Maskrey is a Senior Health Scientist and board certified industrial hygienist with Cardno ChemRisk in the Pittsburgh, PA office. His primary training and areas of Discipline Areas expertise include industrial hygiene, quantitative exposure assessment, human health risk > Industrial Hygiene assessment, air modeling, chemical engineering, organic chemistry, inorganic chemistry, > Exposure and Risk material and energy transfer, and thermodynamics. At Cardno ChemRisk, Joshua Assessment maintains a broad risk assessment practice focused on environmental, health and safety > Chemical services. He has expertise in the design and implementation of industrial hygiene and Engineering occupational health assessments for clients. He has managed and executed numerous > Computational chemical exposure modeling projects. He has also provided scientific support to expert Modeling and witnesses in litigation projects and quantitative modeling and exposure assessment Statistical Services support for non-litigation projects. He is a graduate of the University of Pittsburgh, where > Litigation Support he earned a B.S. in Chemical Engineering with a certificate in Nuclear Engineering.

Significant Projects Years' Experience 8 Years Hazard Assessments, Exposure Assessments and Modeling Experienced in the use of multiple chemical exposure modeling programs published by Joined Cardno regulatory agencies and in peer-reviewed publications including IH MOD 2.0, 2014 CHEMSTEER, ART, MCCEM, AERMOD and others.

Education Developed, and provided oversight for development of, benzene volatilization models, BS, Chemical airborne benzene concentration models and exposure assessments resulting from trace Engineering, and non-trace benzene contamination of various solvents or consumer products including University of gasoline, diesel fuel, asphalt, automotive cleaners, industrial solvents, roofing products, Pittsburgh, roofing adhesives, general adhesives, lubricants, grease, paints, paint strippers, December 2013 ethylbenzene, toluene, xylenes, naphtha, mineral spirits, hexane, creosote and − Minor: Chemistry carbolineum. − Certificate: Performed stack emissions modeling for a variety of facilities using AERMOD. Created an Nuclear approach for assessment of the effects of varying stack parameters on ground level Engineering concentrations of chemical contaminants.

Assisted in development of a chemical contaminant list and assessment of hazards posed by chemical contaminants for various products of members of an industry trade association.

Prepared inhalation exposure models for use in California Proposition 65 assessments for consumer products.

Performed quantitative inhalation and dermal assessment work to supported multiple industry trade groups with reviews and commenting on USEPA Toxic Substances Control Act (TSCA) rulemaking and draft risk evaluation documents for chemical substances evaluated using the new TSCA framework mandated by the 2016 Lautenberg Act.

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Managed projects in which historical chemical analyses and exposure assessments were performed for brake and carburetor cleaner products, creosote and naphtha.

Performed building ventilation assessments for use in California Proposition 65 facility emission characterizations for vapor and particulate compounds.

Performed structure-activity relationship analyses for novel chemistries and polymers to support toxicological evaluations.

Supported a project involving model assessments and analyses for models used or intended to be used in TSCA risk evaluations. Model evaluations of ART, Stoffenmanager, ECETOC TRA, IHMOD and CHEMSTEER were performed.

Led strategic development of the air modeling portion of a high-throughput, screening- level modeling tool used to quickly identify and prioritize potentially hazardous inhalation toxicants used in a number of batching processes.

Assisted with inhalation and dermal exposure assessment for bifenthrin exposure to personnel handling timber products.

Designed a dermal exposure assessment for micronized copper exposure to children due to contact with treated lumber on playgrounds.

Assisted with indoor air modeling approach for peroxy- compounds such as hydrogen peroxide and peracetic acid.

Developed screening-level generation rate modeling tool that allowed users to rapidly estimate generation rates from small project spills. Tool allowed for entry of up to 30 chemical components.

Developed approach for worst-case modeling of VOC and formaldehyde exposure concentrations associated with spills for logistics company.

Performed inhalation and dermal exposure modeling specific to a number of industrial and commercial scenarios where trichloroethylene (TCE) or perchloroethylene (PCE) were used as solvents.

Performed a literature review and analysis of variable sensitivity to acid and alkali burns after dermal contact with caustic substances in humans.

Assisted in the design of indoor air concentration models for formaldehyde emitted from wood containing urea-formaldehyde resin.

Performed Monte Carlo sensitivity analysis used in an exposure assessment for inhalation of diacetyl from microwave popcorn sources.

Industrial Hygiene and Environmental Projects Managed and/or executed exposure sampling projects involving short- and long-term air sampling for asbestos (chrysotile, amosite, crocidolite, other amphiboles), carbon monoxide, crystalline silica, hexavalent chromium, mercury, lead, hydrogen sulfide, mercaptans (thiols), metal carbonyls, nitrogen oxides, ozone, respirable dust, welding fume metals, wood dust, peroxyacetic acid, and volatile organic compounds (including benzene, ethylbenzene, toluene, xylenes, formaldehyde, hexane, methyl bromide and

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others). Experienced in the review and implementation of OSHA and NIOSH sampling methods for industrial hygiene studies.

Designed and executed multiple simulation studies used to re-create and assess historical exposure to chrysotile and amphibole asbestos, VOCs, diacetyl or other chemical or physical species. This work included development of highly detailed study protocols, air, surface or bulk sampling designs, study environmental controls, development of institutional review board documentation, and design or approval of health and safety training. For some studies, historical formulations of products were recreated in a laboratory environment.

Completed industrial hygiene assessments of employees and contractors during petroleum refinery turnarounds (outages). These projects involved collection of personal and area samples for a variety of airborne species, assessment of heat stress, assessment of ventilation conditions in confined spaces, noise exposure assessments, PPE and safety audits, identification of emergencies, and understanding of refinery processes.

Led or assisted with exposure assessments of petroleum refinery operators at the following types of units: crude distillation (atmospheric and vacuum), delayed cokers, catalytic crackers, hydrocrackers, hydrotreaters, hydrodesulfurizers, alkylation units, isomerizers, water treatment plants, and supporting chemical production units.

Completed multiple baseline exposure assessments at petroleum refineries involving detailed personnel interviews and development of similar exposure groups (SEGs). SEGs were developed for operations, maintenance, and other support personnel. Complete job- exposure task lists were created and quantitative and qualitative rankings of potential exposures were developed. The assessments also involved personal air sampling for various VOCs, toxic gases (carbon monoxide, hydrogen cyanide, hydrogen sulfide, nitrogen dioxide), particulates and noise.

Developed a site-specific sampling plan for a construction site with known contaminated soils.

Participated in an exposure assessment of petroleum logistics personnel involved in the loading and unloading of both sweet and sour crude oils. The assessment involved personal air sampling for benzene, toluene, ethylbenzene, xylene, aliphatic hydrocarbons and hydrogen sulfide.

Led a risk evaluation and risk communication project for three reduced sulfur compounds commonly used as odorants in natural gas processes: tert-butyl thiol, n-propyl thiol, and isopropyl thiol.

Reviewed industrial hygiene data containing benzene and 1,3-butadiene exposure information for workers who handled debutanized aromatic concentrate.

Designed and completed a simulation study in which worker exposure to benzene, toluene, xylenes and ethylbenzene during use of equipment containing 2-stroke engines were determined.

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Designed a simulation study in which chrysotile-containing gaskets were removed from historical refrigeration compressors. The study involved measurement of personal and take-home exposures to chrysotile asbestos.

Co-designed a simulation study involving determination of personal and take-home exposures to crocidolite and chrysotile from cutting of asbestos containing pipe. Participated in multiple simulation studies in which recreations of historical chrysotile asbestos work scenarios were performed and sampled to characterize worker, bystander and/or take-home exposures.

Co-designed a simulation study involving reformulation of a historical chrysotile- containing air duct sealer. Participated in the reformulation of the product. The study involved measurement of personal and take-home exposures to chrysotile from application, removal and cleaning of the reformulated product.

Designed and executed on a four-month continuous air monitoring project on a hydraulic fracturing site to collect data on emissions of total VOCs, 75 individual VOCs, hydrogen sulfide, nitrogen oxides, carbon monoxide, PM2.5, PM10 and to measure the effects on ambient noise levels.

Executed statistical analyses and a censored data analysis for a large database of full- shift air samples for total and respirable dust, crystalline silica, and a variety of metals associated with a coal ash spill site.

Performed an evaluation of existing analytical methods (2017) for quantification of air concentrations of beryllium associated with industrial abrasives.

Completed a review of existing literature containing air sampling data for hardwood and softwood dusts in a variety of workplace environments.

Designed and assisted with implementation of a study aimed at a comprehensive determination of surgical suite employee exposure to components of surgical smoke. The study design included air sampling for polycyclic aromatic hydrocarbons (PAHs), VOCs, aldehydes, phenol, ultrafine particulate matter, hydrogen cyanide and carbon monoxide.

Performed personal and area sampling of formaldehyde in various non-occupational environments.

Developed an OSHA-compliant benzene standard operating procedure (SOP) for a company to comply with 29 CFR 1910.1028. Provided training and further benzene exposure assessment support to the company using the SOP.

Assisted with critiques and assessments of existing PBPK models for lead in both children and adults, with a specific investigation of bone resorption rates and lead half-life in bone and blood.

Prepared a research approach to update and execute interlaboratory validation of a pyrolysis-GC/MS method tire and roadwear particles (TRWP) in environmental media previously developed by Cardno ChemRisk scientists on behalf of an international consortium of the eleven major tire manufacturers. This research is ongoing and includes a detailed analyisis of polymeric microstructure and pyrolysis behavior of styrene- butadiene, butadiene and isoprene rubber polymers.

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Performed ventilation assessments with the objective of reducing the transmission of SARS-CoV-2 virus in occupational settings (during COVID-19 pandemic).

Provided consulting advice to a number of companies and industries regarding the use of engineering controls, administrative controls and PPE during the COVID-19 pandemic. Assisted with development of COVID-19 policies for clients.

Engineering Design and Process Safety Management Assisted with design and analysis of bromomethane (methyl bromide) scrubber for fumigation applications. Led air modeling analyses in support of the design of ventilation stacks to remove methyl bromide from industrial warehouse environments following pesticide fumigations.

Participated in an analysis of chemicals with potential to be found in recycled paperboard with respect to regulatory interest and chemical fate. This project involved the design of a process model for a recycled paperboard plant. The analysis was designed for triennial updates to account for updated chemical toxicological information and regulatory requirements. Participated in a separate project involving identification of odorous compounds in paperboard.

Modeled thermal destruction of microorganisms in a food contact product that underwent a heating process.

Holds 16 hrs worth of SAChE certificates of safety achievement in process safety, chemical reactivity hazards, runaway reactions and risk assessment.

Litigation Support Conducted literature reviews and case material reviews to provide litigation support on cases with alleged exposure to asbestos (chrysotile, amosite, crocidolite and tremolite), asphalt, benzene, carbon monoxide, cosmetic talc, diacetyl, diesel fuel, diesel exhaust, ethanol, ethylbenzene, formaldehyde, gasoline, glycol ethers (2-methoxyethanol, 2- ethoxyethanol and their acetates), ionizing radiation, mineral spirits, naphtha, noise, toluene, trimethylbenzenes, xylenes and welding fume metals as well as to acid vapors, caustic vapors, and chlorine bleach aerosols. Reviewed and summarized a variety of case materials and historical corporate documents in the course of developing opinions for expert reports, depositions and trials.

Experience with toxicology, exposure, and industrial hygiene expert preparation for toxic tort depositions and trials. Managed or participated in cases involving railroad workers, machinists, pipefitters, boilermakers, electricians, process operators, construction workers, automotive mechanics, heavy equipment mechanics, carpenters and other tradesmen, chemical manufacturing employees, and office workers.

Managed litigation projects involving indoor air quality (IAQ) and odor complaints with specific reports of irritation and nuisance.

Designed method for estimation of historical benzene content of various types of petroleum distillates.

Developed reports on the state-of-the-art of benzene toxicological and industrial hygiene knowledge over the 1900s.

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Assessed exposure to gasoline vapors due to vapor intrusion into commercial spaces.

Compiled and analyzed asbestos airborne sampling data used for litigation support. Assisted with review of air transport modeling considerations for asbestos fibers (both serpentine and amphibole). Prepared reviews of historical benzene literature during trial support. Compiled and analyzed GC/MS and GC/FID benzene and ethanol (alcohol) concentration data used for litigation support. Performed PBPK modeling of ethanol for forensic cases.

Assessed thermal decomposition rates and chemistries for chrysotile, amosite and crocidolite.

Created database of 500+ formulations of historical automotive products that allowed for rapid estimation of benzene content in each product.

Assisted in litigation regarding zoning of hydraulic fracturing well pads.

Performed review of historical asbestos testing records related to cosmetic talc.

Studied fiber transport characteristics for community fiber exposure cases.

Performed health and safety assessment with respect to acute hydrogen sulfide exposure events in industrial facilities.

Researched and documented historical use of asbestos-containing products including: brake pads, gaskets, packing, rope, boiler components, furnace components, compressor components, electrical equipment, equipment insulation, pipe insulation, cement sheet, cement pipe, joint compound, caulking and others.

Other Significant Projects Performed comprehensive literature review regarding the acute and chronic health effects of electronic nicotine delivery systems (e-cigarettes) as well as psychosocial factors (initiation, cessation and perception of e-cigarette use). Developed database for review of secondhand e-cigarette exposure (secondhand “vape” exposure) studies. Assisted with the design of a clinical study used to determine nicotine PBPK parameters specific to a third-generation device.

Performed review of literature specific to aerodynamic transport of asbestos fibers based on fiber dimensions and particle properties.

Completed statistical analyses of noise exposure measurements in occupational environments.

Assisted with toxicological reviews of chemicals used in unconventional natural gas extraction.

Developed a risk assessment procedure for individuals exposed to ionizing radiation through inhalation and ingestion of coal ash.

Reviewed an industrial process with potential endotoxin contamination, provided a source analysis for the contamination and suggestions for remediation procedures.

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Designed and performed a comprehensive review of blood alcohol modeling techniques that account for a variety of alcoholic beverage consumption scenarios. Performed a review of available information regarding blood alcohol concentrations (BACs) associated with inhalation of ethanol.

Designed an approach for combining e-cigarette use parameters with a PBPK model for ethanol to predict user’s BACs over time.

Designed and completed analysis of arsenic concentrations in California-based wines.

Contributed chemistry and chemical transport knowledge to an analysis of compounds used in the tire industry for large tire consortium. Reviewed and analyzed literature pertaining to current uses of chemicals in industry, particularly related to organic salts of cobalt and zinc. Aided in preparation of a state-of-knowledge report that communicated findings.

Determined air exchange rates for modeling and simulation studies using a sulfur hexafluoride (SF6) tracer gas dilution method compliant with ASTM method E741-11.

Assisted in literature review and biokinetic modeling of Co2+ ion transport in the human body.

Nanoscale Catalysis Research In the completion of his bachelor degree, Joshua worked under Professor Götz Veser to gain an understanding of nanoscale particle synthesis and utilization. His goal was the heterogenization of amine catalysts by encapsulation in hollow silica nanoparticles containing deposits of metals.

Education Worked as an undergraduate teaching assistant for an engineering class titled Fundamentals of Nuclear Engineering led by Professor Larry Foulke at the University of Pittsburgh. Instructed students on the basics of nuclear plant design, ionizing radiation measurement and control, and radiochemistry.

Safety Cardno ChemRisk East Branch Safety Officer (November 2017 – July 2019)

OSHA 30 Hour General Industry Certification

OSHA 8 Hour Confined Space Entry Training Certification

Recruiting Pittsburgh office recruiting coordinator at Cardno ChemRisk (October 2014 – August 2016).

Management Pittsburgh office Regional Unit Manager (January 2019 – Present).

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Certifications > Certified Industrial Hygienist (CIH), Comprehensive Practice (CP #11747) by the American Board of Industrial Hygiene (ABIH), 2019

Professional > Recipient of Third Annual Health Effects of Shale Gas Extraction Conference: “Best In Honors/Awards Session” Poster Award, 2012 > Cardno GEM Award for exceptional client service (4x: 2017, 2017, 2018, 2020) > Cardno company-wide CORE value award for Excellence (2018)

Membership and > American Institute of Chemical Engineers (AIChE), 2012 – Present Service to Professional > American Industrial Hygiene Association (AIHA), 2015 – Present Societies > American Industrial Hygiene Association (AIHA) Pittsburgh Local Section, 2015 – Present.

> Director July 2019 – Present

Peer-Reviewed > Abelmann, A., A.R. McEwen, J.T. Lotter and J.R. Maskrey (2020). Survey of 24-h Publications personal formaldehyde exposures in geographically distributed urban office workers in the USA. Environ Sci Pollut Res. 27: 17250-17257.

> More, S. L., S.A. Thornton, J.R. Maskrey, A. Sharma, E. de Gandiaga, T.J. Cheng, E.S. Fung, A.J. Bernal, and A.K. Madl (2020). PBPK modeling characterization of potential acute impairment effects from inhalation of ethanol during e-cigarette use. Inhal Toxicol. 32(1): 14-23.

> Benson, S.M., J.R. Maskrey, M.D. Nembhard, K.M. Unice, M.A. Shirley, and J.M. Panko. 2019. Evaluation of personal exposure to surgical smoke generated from electrocautery instruments: A pilot study. Ann Work Exp Health. 63(9): 990-1003.

> Avens, H.J., J.R. Maskrey, A.L. Insley, K.M. Unice, R.C.D. Reid, J. Sahmel. 2019. Characterization of airborne BTEX exposures during use of lawnmowers and trimmers. Arch Env Occup Health. 74(4):197-205.

> Insley, A.L., J.R. Maskrey, L.A. Hallett, R.C.D. Reid, E.S. Hynds, C. Winter, and J.M. Panko. 2019. Occupational survey of airborne metal exposures to welders, metalworkers, and bystanders in small fabrication shops. J Occup Env Hyg. 16(6):410-421.

> Abelmann, A., J.R. Maskrey, J.T. Lotter, A.M. Chapman, M.D. Nembhard, J.S. Pierce, J.M. Wilmoth, R.J. Lee, and D.J. Paustenbach. 2017. Evaluation of take- home exposure to asbestos from handling asbestos-contaminated worker clothing following the abrasive sawing of cement pipe. Inhal Tox. 29(12-14):555-566.

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> Maskrey, J.R., A. Insley, E.S. Hynds, and J.M. Panko. 2016. Air monitoring of volatile organic compounds at relevant receptors during hydraulic fracturing operations in Washington County, Pennsylvania. Env Monit Assess. 188(7):1-12.

> Cowan, D.M., J.R. Maskrey, E.S. Fung, T.A. Woods, L.M. Stabryla, P.K. Scott, and B.L. Finley. 2016. Best-practices approach to determination of blood alcohol concentration (BAC) at specific time points: Combination of ante-mortem alcohol pharmacokinetic modeling and post-mortem alcohol generation and transport considerations. Reg Tox Pharmacol. 78:24-36.

> Paustenbach, D.J., A.L. Insley, J.R. Maskrey, J.L. Bare, K.M. Unice, V.B. Conrad, L. Iordanidis, D.W. Reynolds, K.D. DiNatale, and A.D. Monnot. 2016. Analysis of Total Arsenic Content in California Wines and Comparison to Various Health Risk Criteria. Am J Enol Viticult. 67(2):179-187.

Presentations > Maskrey, J.R., L.A. Hallett. 2020. Reliable mass balance models in the current U.S. regulatory environment and application of engineering principles to improve generation rate estimation. Education Session C7 at the American Industrial Hygiene Conference & Exposition (AIHce) June 1-3, 2020, Atlanta, GA (held virtually due to pandemic).

> Maskrey, J.R. and R.E. Zisook. 2019. Applying Near Field Exposure Models for Oil and Gas Petrochemical Tasks – Updates on IH MOD 2.0. Cardno ChemRisk Oil and Gas Exchange Series. Webinar. August 14, 2019.

> Maskrey, J.R., A.R. McEwen, J.T. Lotter, and A. Abelmann. 2019. Evaluation of General Population Inhalation Exposures to Formaldehyde Present in the Ambient Environment. Poster Presentation at the American Industrial Hygiene Conference & Exposition (AIHce) May 20-22, 2019, Minneapolis, MN.

> Maskrey, J.R. and L.A. Hallett. 2019. IH Air Modeling Techniques for Exposure Estimation. AIHA Pittsburgh Local Section Meeting. January 31, 2019, Pittsburgh, PA.

> Maskrey, J.R., A. Abelmann, J.T. Lotter, A.M. Chapman, M.D. Nembhard, J.M. Wilmoth, R.J. Lee and D.J. Paustenbach. 2018. Airborne Chrysotile and Crocidolite Exposure to Workers and Bystanders during Use of a Powered Abrasive Saw to Cut Asbestos-Containing Cement Pipe. Poster Presentation at the American Industrial Hygiene Conference & Exposition (AIHce) May 21-23, 2018, Philadelphia, PA.

> Maskrey, J.R., J.M. Panko. 2017. Emerging Litigations: Cosmetic Talc and Hydraulic Fracturing. Session 2: Local Air Quality Effects of Unconventional Natural Gas Development. Continuing Legal Education (CLE) Seminar provided by Dickie, McCamey & Chilcote, P.C. August 23, 2017, Pittsburgh, PA.

> Maskrey, J., J.M. Panko, K.M. Hitchcock, E.C. Shay. 2012. Assessment of the Impact of Hydraulic Fracturing Operations on Local Ambient Air Quality in Washington County, PA. Poster Presentation at the Third Annual Health Effects of Shale Gas

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Extraction Conference. November 9, 2012, University of Pittsburgh, Pittsburgh, Pennsylvania.

Published Abstracts > Bare, J.L, J.R Maskrey, L.A. Hallett, C.M. Hamaji, K.M. Unice. 2019. Qualitative Review of Recent USEPA TSCA Occupational Inhalation Exposure Assessments: Recommendations for Future Assessments. Abstract P122. Society for Risk Analysis (SRA) Annual Meeting. December 8-12, 2019, Arlington, VA.

> Bare, J.L, R.M. Novick, J.R. Maskrey, K.M. Unice. 2019. Screening Air Dispersion Modeling Approach: Prop 65 Community Exposure Assessments for Industrial Emitters. Platform Paper at Air and Waste Management Association's (AWMA) Annual Conference and Exhibition: Conference Proceedings. June 25-28, 2019, Quebec City, QC, Canada.

> Insley, A.L., J.R. Maskrey, L.A. Hallett, R.C.D. Reid, E.S. Hynds, C. Winter, J.M. Panko. 2019. Occupational Survey of Airborne Metal Exposures to Welders, Metalworkers, and Bystanders in Small Fabrication Shops. Abstract #514. American Industrial Hygiene Conference & Exposition (AIHce) May 20-22, 2019, Minneapolis, MN.

> Maskrey, J.R., A.R. McEwen, J.T. Lotter, and A. Abelmann. 2019. Evaluation of General Population Inhalation Exposures to Formaldehyde Present in the Ambient Environment. Abstract #320. American Industrial Hygiene Conference & Exposition (AIHce) May 20-22, 2019, Minneapolis, MN.

> More, S.L., S.A. Thornton, A. Sharma, J.R. Maskrey, E.S. Fung, E.J. de Gandiaga, T.J. Cheng, A.K. Madl, and A. Bernal. 2019. Characterization of Acute Impairment Effects from Inhalation of Ethanol during E-Cigarette Use. Abstract #3125. 58th Annual Meeting of the Society of Toxicology (SOT). March 10-14, 2019. Baltimore, MD.

> Madl, A.K, K. Unice, J.R. Maskrey, A. Bernal. 2019. Nicotine Profile across a Range of E-Cigarette User Conditions: Validation of a Pharmacokinetic Model. Abstract 3-92. 25th Annual Meeting of the Society for Research on Nicotine & Tobacco. February 20-23, 2019. San Francisco, CA.

> Lotter, J.T., A. Abelmann, J.R. Maskrey, A.M. Chapman, M.D. Nembhard, J.S. Pierce, J.M. Wilmoth, R.J. Lee and D.J. Paustenbach. 2018. Evaluation of Take- Home Exposure to Asbestos from Handling Asbestos-Contaminated Worker Clothing Following the Cutting of Cement Pipe. Abstract #292. American Industrial Hygiene Conference & Exposition (AIHce) May 21-23, 2018, Philadelphia, PA.

> Maskrey, J.R., A. Abelmann, J.T. Lotter, A.M. Chapman, M.D. Nembhard, J.M. Wilmoth, R.J. Lee and D.J. Paustenbach. 2018. Airborne Chrysotile and Crocidolite Exposure to Workers and Bystanders during Use of a Powered Abrasive Saw to Cut Asbestos-Containing Cement Pipe. Abstract #246. American Industrial Hygiene Conference & Exposition (AIHce) May 21-23, 2018, Philadelphia, PA.

> Abelmann, A., J.R. Maskrey, J.T. Lotter, A.M. Chapman, M.D. Nembhard, S.F. Schlaegle, B.R. Bandli, R.J. Lee and D.J. Paustenbach. 2018. Asbestos Fiber

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Transport from Facilities into the Community: Results of Field Studies. Abstract #198. American Industrial Hygiene Conference & Exposition (AIHce) May 21-23, 2018, Philadelphia, PA.

> Madl, A.K., K. Unice, J.R. Maskrey and A. Bernal. 2018. Application of a Pharmacokinetic Model to Predict Nicotine Profile across a Range of E-Cigarette User Conditions. Abstract #3562. 57th Annual Meeting of the Society of Toxicology (SOT). March 11-15, 2018. San Antonio, TX.

> Bare, J., M. Abramson, J. Maskrey, C. Manning and J. Keenan. 2018. Proposition 65 Risk Assessment Model Framework for Chemically-Complex Consumer Products. Abstract #3525. 57th Annual Meeting of the Society of Toxicology (SOT). March 11- 15, 2018. San Antonio, TX.

> Abelmann, A., J.R. Maskrey, J.T. Lotter, A.M. Chapman, M.D. Nembhard, S.F. Schlaegle, B.R. Bandli, R.J. Lee and D.J. Paustenbach. 2018. Asbestos Fiber Transport from Facilities into the Community: Results of Field Studies. Abstract #3515. 57th Annual Meeting of the Society of Toxicology (SOT). March 11-15, 2018. San Antonio, TX.

> Avens, H.J., A.L. Insley, J.R. Maskrey, R.C.D. Reid, K.M. Unice and J. Sahmel. 2017. Measurement of Benzene, Toluene, Ethylbenzene, and Xylene Exposure Concentrations during Operation of Gasoline-Powered Lawn Mowers and Weed Trimmers. Abstract #572. American Industrial Hygiene Conference & Exposition (AIHce) June 4-7, 2017, Seattle, WA.

> Insley, A.L., H.J. Avens, J.R. Maskrey, R.C.D. Reid, K.M. Unice and J. Sahmel. 2017. Use of Occupational Exposure Models in an Outdoor Setting to Estimate Fuel Combustion Efficiencies. Abstract #624. American Industrial Hygiene Conference & Exposition (AIHce) June 4-7, 2017, Seattle, WA.

> Cowan, D.M., J.R. Maskrey, E. Fung, T. Woods, L. Stabryla, P.K. Scott and B.L. Finley. 2015. Evaluation of Empirically-based PBPK Modeling Approaches for Modeling Ante- and Post Mortem Ethanol Concentrations in Biological Matrices. Abstract #2822. 54th Annual Meeting of the Society of Toxicology (SOT). March 22- 26, 2015. San Diego, CA.

> Bolstad, H.M., K.M. Unice, J.R. Maskrey, D.M. Hollins, B.D. Kerger and D.J. Paustenbach. 2013. Airborne Diacetyl from Cooking and Consumption of Microwave Popcorn: Estimation of Consumer Exposure with a Two-zone Near-field/Far-field Model. Abstract #1268. 52nd Annual Meeting of the Society of Toxicology (SOT). March 10-14, 2013. San Antonio, TX.

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