TSCA Occupational Exposure Workshops
Under the Toxic Substances Control Act (TSCA), EPA is required to evaluate the risks posed to workers in its risk evaluations and risk assessments. In an effort to improve the TSCA occupational exposure assessment process, which evaluates risks posed to workers, EPA’s Existing Chemicals Program hosts a workshop series to seek input on multiple topics related to TSCA occupational exposure assessment.
On this page:
May 14 - 16, 2024 Workshop
The May 2024 workshop focused on data and modeling issues. These were identified as topics of significant interest by participants of the January 2023 workshop. This event included presentations from EPA staff on data needs, the exposure assessment process, test orders, models and model parameterization, and approaches associated with particulates. External participants presented on databases, ongoing task force efforts, consideration of similar exposure groups, modeling and measurement issues, and data/approaches for addressing particulate exposures.
May 14 - 16, 2024: TSCA Occupational Conditions of Use and Exposure Scenario
Presentations from May 14, 2024
| Presentation | Speakers | YouTube Recording | Presentation Slides |
|---|---|---|---|
|
Introduction / Refresh on Previous Workshops / Scope & Objectives |
Jeff Dawson (EPA), Stan Barone (EPA) | Session recordings are currently being edited to ensure accessibility for all viewers and listeners in compliance with Section 508 and will be added to this webpage when complete. | Introduction / Refresh on Previous Workshops / Scope & Objectives (pdf) |
| Actionable Items from Previous Workshops | Jeff Dawson (EPA), Stan Barone (EPA), Greg Macek (EPA) | Actionable Items from Previous Workshops (pdf) | |
| CDR & TRI Data Specifics | Amanda Roach (EPA) | CDR & TRI Data Specifics (pdf) | |
| Identification of Data Needs | Greg Macek (EPA) | Identification of Data Needs (pdf) | |
| Test Order Process Overview | Josh Booth (EPA) | Test Order Process Overview (pdf) | |
| Use of Inhalation Text Order Data | Michael Stracka (EPA) | Use of Inhalation Text Order Data (pdf) | |
| Data Annotation Issues | Silvia Maberti (ExxonMobil) | Use of Inhalation Text Order Data (pdf) | |
| Chemical Exposure Database | Marissa Baker (University of Washington) | Chemical Exposure Database (pdf) | |
| AIHA TSCA Task Force | Andy Maier (Cardno Consulting) | AIHA TSCA Task Force (pdf) | |
| Development of Similar Exposure Groups | Susan Arnold (University of Minnesota), Jenn Sahmel (Insight Exposure and Risk Sciences, Inc.) | Development of Similar Exposure Groups (pdf) | |
| Discussion & Wrap Up | Jeff Dawson (EPA), Stan Barone (EPA) | No presentation slides |
Presentations from May 15, 2024
| Presentation | Speakers | YouTube Recording | Presentation Slides |
|---|---|---|---|
| Introduction | Jeff Dawson (EPA), Stan Barone (EPA) | Session recordings are currently being edited to ensure accessibility for all viewers and listeners in compliance with Section 508 and will be added to this webpage when complete. | No presentation slides |
| General Context/Overview | Greg Macek (EPA) | No presentation slides | |
| Screening Level Approaches/Chemsteer | Greg Macek (EPA) | Screening Level Approaches/Chemsteer (pdf) | |
| Higher Level Probabilistic Approaches | Franklyn Hall (EPA) | Higher Level Probabilistic Approaches (pdf) | |
| Dermal Framework | Nerija Orentas (EPA) | Dermal Framework (pdf) | |
| Screening SVOCs for Potential Dermal Exposure | John Kissel (University of Washington) | Screening SVOCs for Potential Dermal Exposure (pdf) | |
| Dermal Modeling Issues | Jennifer Sahmel (Insight Exposure and Risk Sciences, Inc.) | Dermal Modeling Issues (pdf) | |
| Dermal Exposure Factors | Paul DeLeo (ACC) | Dermal Exposure Factors (pdf) | |
| Inhalation Measurements, Models and Criteria | Jooha Koivisto (University of Helsinki), Susan Arnold (University of Minnesota), Mike Jayjock (Jayjock Associates) | Inhalation Measurements, Models and Criteria (pdf) | |
| AIHA EASC Occupational Exposure Tools | Tom Armstrong (TWA8HR Occupational Hygiene Consulting) | Inhalation Measurements, Models and Criteria (pdf) | |
| ONUs-Occupational Exposure Data | Darius Sivin (United Auto Workers), Rebecca Reindel (AFL-CIO) | Inhalation Measurements, Models and Criteria (pdf) | |
| Wrap Up | Jeff Dawson (EPA), Stan Barone (EPA) | No presentation slides |
Presentations from May 16, 2024
| Presentation | Speakers | YouTube Recording | Presentation Slides |
|---|---|---|---|
| Introduction | Stan Barone (EPA), Jeff Dawson (EPA) | Session recordings are currently being edited to ensure accessibility for all viewers and listeners in compliance with Section 508 and will be added to this webpage when complete. | No presentation slides |
| General Context / Description of Issue | Ariel Hou (EPA), Ritesh Tiwari (EPA) | General Context / Description of Issue (pdf) | |
| Industrial Hygiene Perspectives on Particulates | Andy Maier (Cardno Consulting) | Industrial Hygiene Perspectives on Particulates (pdf) | |
| Indoor Mass Balance Models-Aerosols/Particulates | Jon Arnot (Arnot Research & Consulting) | Indoor Mass Balance Models-Aerosols/Particulates (pdf) | |
| Data Generation for Emission Rates | Susan Arnold (University of Minnesota), Jenn Sahmel (Insight Exposure and Risk Sciences, Inc.) | Indoor Mass Balance Models-Aerosols/Particulates (pdf) | |
| Workshop Summary / Next Steps | Jeff Dawson (EPA), Stan Barone (EPA) | No presentation slides |
October 3 - 4, 2023 Workshop
The October 2023 workshop focused on defining conditions of use and occupational exposure scenarios. Presentations included background information on conditions of use and occupational exposure scenarios, how occupational exposure scenarios are developed, examples for perchloroethylene and 1,2-dichloroethane and a variety of stakeholder perspectives. Materials associated with this meeting are available in the table below.
October 3 and 4, 2023: TSCA Exposure Workshop: Defining Conditions of Use and Exposure Scenarios
January 12, 2023 Workshop
This January 2023 workshop focused on ways to initiate a strategy to improve the data, approaches, and processes EPA uses to conduct occupational exposure assessment under TSCA. EPA also sought input on the development of approaches to enable broader collaboration on exposure issues such as modeling inputs, data development and sampling strategies. Materials associated with this meeting are available in the table below.
January 12, 2023: Occupational Exposure Assessments Under TSCA: A Discussion of Potential Improvements to Data, Approaches, and Processes