An official website of the United States government
Resources
Resources by PHAGM Section
Here you will find resources from each PHAGM section.
Understanding the PHA Process
Getting Familiar with the Site
- ATSDR’s Data Needs for the PHA Process [PDF – 830 KB]
- ATSDR’s Exposure Unit Guidance [PDF – 942 KB]
- ATSDR’s Modeling Guidance Memo (under development)
Screening Analysis
- ATSDR CV Supplemental Guidance [PDF – 515 KB]
- ATSDR’s Guidance for Inhalation Exposures to Particulate Matter [PDF – 2 MB]
- SHOWER Model Resources
- Exposure Dose Guidance for the SHOWER Model (under development)
- User’s Guide for the SHOWER Model [PDF – 5 MB]
- PHA Process Flow Chart and Using SHOWER Model Results (under development)
- ATSDR’s Body Weight EDG [PDF – 311 KB]
- ATSDR’s Dioxin Guidance
- ATSDR’s EPC Guidance for Discrete Sampling [PDF – 2 MB]
- ATSDR’s EPC Guidance for Non-Discrete Sampling [PDF – 2 MB]
- ATSDR’s Fish and Shellfish Ingestion EDG (under development)
- ATSDR’s Inhalation EDG [PDF – 1 MB]
- ATSDR’s Life Expectancy and Exposure Factor EDG [PDF – 812 KB]
- ATSDR’s PAH Guidance [PDF – 832 KB]
- ATSDR’s Soil and Sediment Ingestion EDG [PDF – 716 KB]
- ATSDR’s Soil and Sediment Dermal Absorption EDG [PDF – 904 KB]
- ATSDR’s Surface Water Dermal and Ingestion EDG [PDF – 1 MB]
- ATSDR’s Water Ingestion EDG [PDF – 854 KB]
- PFAS Resources
- ATSDR’s Hexavalent Chromium Interim Guidance [PDF – 244 KB]
- Interim ATSDR Cancer Risk Evaluation Guidance Value for Inhalation Exposures to Naphthalene [PDF – 138 KB]
In-Depth Tox Effects Analysis
Putting it All Together
ADS Newsletters: Topics Related to Various PHAGM Sections
- Newsletter Index [PDF – 192 KB]
- January 2020 [PDF – 256 KB]
- April 2020 [PDF – 703 KB]
- September 2020 [PDF – 819 KB]
- February 2021 [PDF – 610 KB]
- June 2021 [PDF – 606 KB]
- October 2021 [PDF – 3 MB]
- January 2022 [PDF – 511 KB]
- May 2022 [PDF – 782 KB]
- December 2022 [PDF – 2 MB]
- April 2023 [PDF – 756 KB]
- December 2023 [PDF – 644 KB]
- June 2024 [PDF – 1 MB]
- October 2024 [PDF – 1 MB]
Additional Resources
Here you will find resources from EPA and additional entities that health assessors may refer to during the PHA process.
EPA Resources
- EPA-Expo-Box (A Toolbox for Exposure Assessors)
- EPA Recommendations for Default Value for Relative Bioavailability of Arsenic in Soil
- Exposure Factors Handbook
- Integrated Risk Information System (IRIS)
- Regional Screening Levels (RSLs)
- Human Health Risk Assessment
- Acute Exposure Guideline Levels (AEGLs)
- Water Dermal Guidance
- Supplemental Guidance for Assessing Susceptibility from Early-Life Exposure to Carcinogens
- Lead at Superfund Sites: Software and Users’ Manuals (Integrated Exposure Uptake Biokinetic Model for Lead in Children [IEUBK] and Adult Lead Methodology [ALM])
- EPA National Air Toxics Assessment (NATA)
- Vapor Intrusion
Other Resources