Perry Logan (3M) and I will be presenting  a PDC on “Forecasting Exposures Using the New Well-Mixed Room Models” on the Sunday prior to the 2019 AIHCE in Minneapolis:      Click here for the 2019 AIHCE Bring an old fashioned scientific calculator and a dozen pieces of paper, a Windows 7 or 10 laptop, and a desire to estimate past and predict present and future exposures using state-of-the-art “Well-mixed Room” models and Monte Carlo Simulation methods. PDC 410: Forecasting Exposures Using Well Mixed Room Models – NEW! Sun, 5/19: 8:00 AM  – 5:00 PM Professional Development Course Minneapolis Convention Center (MCC) CM Credit Hours: 7 Description:  The new one and two box Well Mixed Room (WMR) models will be introduced, along with a systematic approach to calibrating a WMR model. Software (Windows only) will be provided that allows the user to quickly […]

Author: Paul

July 14, 2018

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Author: Paul Hewett

Our Mission

To provide environmental, health, and safety (EHS) professionals with training, publications, and software, all designed to facilitate the collection, analysis, interpretation, and management of occupational exposure data. To provide consulting services regarding the statistical analysis and interpretation of occupational and environmental data, the design of performance-based sampling strategies, and litigation support.

About EASi


Exposure Assessment Solutions, Inc. (EAS) was founded with three objectives: First, develop and provide data analysis and other software to the EH&S community. Second, provide onsite and online training opportunities regarding data analysis, data interpretation, and exposure sampling strategy design. Last, provide both general consulting and litigation support services regarding the statistical analysis of corporate occupational and environmental concentration datasets.

Paul Hewett Ph.D. CIH is the founder, president, and principal of EAS. Previously, Paul worked for NIOSH (Division of Respiratory Disease Studies), specializing in the measurement and characterization of pneumoconiosis producing dusts. His credentials include a masters in industrial hygiene from Central Missouri State University (1978), a doctorate in industrial hygiene from the University of Pittsburgh, School of Public Health (1991), as well as numerous peer reviewed publications addressing exposure data analysis and interpretation issues.

Our Partners

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Medgate, a global provider of Enterprise EHS Software Solutions, and EAS, the developer of IHDataAnalyst, have added Bayesian Decision Analysis and other data analysis functions to the Medgate Industrial Hygiene suite.