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Recent Addition items from past years

May 25, 2018
EPA announces the availability of the final report, Improving the Resilience of Best Management Practices in a Changing Environment: Urban Stormwater Modeling Studies. This report responds to the need for an improved understanding of the potential impacts of changes in long term weather conditions on the occurrence and management of urban stormwater runoff. The stormwater management scenarios covered five types of developed land use in five geographic locations representing different hydroclimatic regimes throughout the United States. This report presents the results of these modeling studies, which are applicable to both new development, redevelopment, and stormwater retrofits.
May 23, 2018
On May 23, 2018, EPA will be hosting an IRIS public science meeting to provide an opportunity for the public to give input and participate in an open discussion regarding the IRIS Assessment Plan (IAP) that was prepared for this IRIS chemical prior to the development of the draft assessment. See May 2018 IRIS Public Science Meeting for details on the IAP and meeting agenda.
April 16, 2018
EPA announced the release of the draft IRIS Assessment Plan for Ammonia and Ammonium Salts Noncancer Oral. The IAP will be discussed with the public on May 23, 2018 at an IRIS Public Science Meeting (Webinar). More information on this event can be found by visiting on the public meeting web site. The public comment period for the IAP closes on May 16, 2018. [Federal Register Notice Apr 16, 2018]
April 12, 2018
The National Academies of Sciences, Engineering, and Medicine (NAS) released their review of recent advancements made in the IRIS Program. The NAS report recognized the substantial progress made in implementing recommendations outlined in past NAS reports, and noted the improvement in the IRIS Program's application of systematic review methods. The committee offer recommendations which build on the progress that EPA has already made.
March 22, 2018
On March 22, 2018, EPA hosted an IRIS public science meeting to provide an opportunity for the public to give input and participate in an open discussion regarding the IRIS Assessment Plan (IAP) that was prepared for this IRIS chemical prior to the development of the draft assessment. See March 2018 IRIS Public Science Meeting for details on the IAP and meeting presentation materials.
February 01, 2018
EPA released the most recent IRIS Program Report to Congress. The report is responsive to the Consolidated Appropriations Act, 2017, and provides Congress and the public with an update on an interagency working group's evaluation of the IRIS Program's implementation of NAS recommendations.
January 30, 2018
EPA posted a response to Request for Correction (RFC) 17002: Integrated Risk Information System; Toxicological Review of Chloroprene. The EPA document contains two attachments, including EPA's Response (Attachment 1) and a Systematic Review of Chloroprene [CASRN 126-99-8] Studies Published Since 2010 IRIS Assessment to Support Consideration of the Denka Request for Correction (RFC) (Attachment 2).
January 29, 2018
EPA released the final report, Procedures for Delineating and Characterizing Watersheds for Stream and River Monitoring Programs (EPA/600/R-17/448F). This manual describes how states and tribes can delineate watersheds using two different methods and provides methods for five characterization steps (land use, base flow, channel slope/sinuosity, watershed slope, facilities of concern).
January 25, 2018
EPA announced the release of the IRIS Assessment Plan for Uranium and the Systematic Review Protocol for the IRIS Chloroform Assessment. Information regarding the implementation of systematic review in the IRIS Program is described in a January 2018 Memo.

Recent Addition items from past years

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