Recent Additions for 2019

EPA announced the release of the final report, Integrated Science Assessment for Particulate Matter. The Integrated Science Assessment (ISA) for Particulate Matter(PM) review includes information spanning scientific disciplines including atmospheric science, exposure, dosimetry, to assess the health and welfare effects related to particulate matter. [Federal Register Notice Jan 27, 2020]

EPA announces the availability of the Systematic Review Protocol for the Polychlorinated Biphenyls (PCBs) Noncancer IRIS Assessment (Preliminary Assessment Materials) for public review comments. [Federal Register Notice Dec 19, 2019]

EPA's Ecological Risk Assessment Support Center (ERASC) announces the release of the final report, Summary Report. Separating Anthropogenic Metals Contamination from Background: A Critical Review of Geochemical Evaluations and Proposal of Alternative Methodology. This technical paper relates to the issue of background soil chemical demarcation at metals contaminated sites.

EPA announced the release of the final report, Provisional Peer-Reviewed Toxicity Value (PPRTV) Assessment for p -α,α,α-Tetrachlorotoluene on the PPRTV website.

EPA announced the release of the final report, Provisional Peer-Reviewed Toxicity Value (PPRTV) Assessment for 2-Nitropropane on the PPRTV website.

EPA announced the release of the IRIS Program Outlook Update (December 2019) on the IRIS website which includes updates to the list of IRIS Assessments that are currently in development.

EPA's Office of Land Management and Emergency Management (OLEM) announced the availability of updated Regional Screening Level (RSL) tables. The New Tables were generated to reflect changes in the toxicity and chemical-specific parameters as per the RSL hierarchies.

EPA announced the release of the draft document, Systematic Review Protocol for the PFBA, PFHxA, PFHxS, PFNA, and PFDA IRIS Assessments (Preliminary Assessment Materials), for a 45-day public review and comment period. The protocol presents the methods for conducting the systematic reviews and dose-response analyses for development of a draft IRIS assessment for five per- and polyfluoroalkyl substances (PFAS) assessments including: perfluorodecanoic acid (PFDA; CASRN 335-76-2), perfluorononanoic acid (PFNA; CASRN 375-95-1), perfluorohexanoic acid (PFHxA, CASRN 307-24-4), perfluorohexanesulfonic acid (PFHxS, CASRN 355-46-4), and perfluorobutanoic acid (PFBA, CASRN 375-22-4), and their related salts which are all members of the group per- and polyfluoroalkyl substances (PFAS).

EPA announced the release of the draft document, IRIS Assessment Plan (IAP) for Inorganic Mercury Salts (Scoping and Problem Formulation Materials), for a 30-day public review and comment period. The IAP will be discussed with the public on December 5, 2019 at an IRIS Public Science Meeting (Webinar). More information on this event can be found by visiting the public meeting website. The public comment period for the IAP closes on November 7, 2019. [Federal Register Notice Oct 8, 2019]

EPA announced the release of the IRIS Program Outlook Update (October 2019) on the IRIS website which includes updates to the list of IRIS Assessments that are currently in development.

EPA is announcing the availability of the document, Integrated Science Assessment for Ozone and Related Photochemical Oxidants (First External Review Draft) for public review and comments.The deadline for comments is December 2, 2019. [Federal Register Notice Sep 26, 2019]

EPA announces the availability of the All-Ages Lead Model (AALM), Version 2 software with updated supporting documentation (External Review Draft). The AALM Model is scheduled to undergo an independent peer review by EPA's Science Advisory Board in October 2019. For more information related to scheduling and peer reviewers for this new tool, please visit the SAB AALM Project website. [Federal Register Notice Sep 24, 2019]

EPA announced the release of the draft document, Updated Problem Formulation and Systematic Review Protocol for the Inorganic Arsenic IRIS Assessment, for a 30-day public review and comment period. The deadline for comments is June 27, 2019. [Federal Register Notice May 28, 2019]

EPA's Office of Land Management and Emergency Management (OLEM) announced the availability of updated Regional Screening Level (RSL) tables. The New Tables were generated to reflect changes in the toxicity and chemical-specific parameters as per the RSL hierarchies.

EPA is announcing the availability of the final report, Application of the Sea-Level Affecting Marshes Model (SLAMM) to the Lower Delaware Bay, with a Focus on Salt Marsh Habitat. This report presents future projections of change for seven salt marsh areas of the Delaware Bay, using the SLAMM model.

EPA announced the availability of a Provisional Peer-Reviewed Toxicity Value (PPRTV) Assessment for 2-Ethylhexanol (CASRN 104-76-7). Subchronic and chronic provisional RfDs, subchronic and chronic provisional RfCs, and a provisional oral slope factor were derived in this assessment.

EPA announces the availability of the IRIS Assessment Plan for Methylmercury (Scoping and Problem Formulation Materials) for a 30-day public comment period. EPA also announces a public science meeting (via webinar) scheduled for May 15, 2019. Deadline for comments is May 6, 2019. [FR Notice Apr 4, 2019]

EPA announced the release of the IRIS Program Outlook Update (April 2019) on the IRIS website. The April 2019 update lists IRIS Assessments that are currently in development, assessments that have been discontinued or suspended, and projected public milestone(s). This update comes after the release of the first Program Outlook notice announced in December 2018.

EPA announces the availability of the Systematic Review Protocol for the Hexavalent Chromium IRIS Assessment (Preliminary Assessment Materials) for a 45-day public comment period. EPA also announces at this time, a public science meeting (via webinar) scheduled for April 24, 2019 to discuss this draft report. [Federal Register Notice Mar 15, 2019]

EPA announced an update to Chapter 3 (Water and Other Select Liquids) of the Exposure Factors Handbook (2011 Edition). This update includes new information and factors on non-chemical-specific information used to assess human exposure to environmental contaminants that has become available since the 2011 Edition was released.