IRIS Handbook

EPA's Office of Research and Development released the draft ORD Handbook for Developing IRIS Assessments for a 90-day public review and comment period. The IRIS Handbook provides step-by-step guidance to staff developing assessments in the IRIS Program.

Learn about IRIS | Read the IRIS Handbook

Atlanta Georgia's Proctor Creek Community Tool

EPA announces the availability of the Proctor Creek Watershed Story Map, an interactive online tool that combines maps with narrative text, images, and multimedia content to convey information as a story to inform and connect with viewers.

Integrated Science Assessments

EPA's Integrated Science Assessments (ISAs) form the scientific foundation for the review of the NAAQS standards by providing human health and welfare (e.g. ecology, visibility, materials) based science assessments.

Learn about the ISAs | Read the latest Report

UPDATE: Regional Screening Levels (RSLs) Tables - Nov 2020

EPA's RSL tables provide comparison values for residential and commercial/industrial exposures to soil, air, and tapwater (drinking water). Read about the new additions of the regional screening level tables ...