Jump to main content or area navigation.

Contact Us

Environmental Assessment

Recent Additions for 2007

Recent Addition items from past years

December 28, 2007
EPA has released the draft document, IRIS Toxicological Review of Acrylamide, as announced in a [Federal Register Dec 28, 2007]. This draft assessment is provided for public viewing and comment. Public comments received on the Toxicological Review within the external review period (over the next 60 days) will be provided to EPA's Science Advisory Board (SAB) for their consideration. Any comments not received within the requested time period will be considered by EPA in their revisions. The deadline for comments is February 26, 2008.
December 21, 2007
EPA is announcing the release of the draft document, Integrated Science Assessment for Oxides of Nitrogen and Sulfur - Environmental Criteria and the Annexes (First External Review Draft) for public review and comment as described in the December 21, 2007 Federal Register Notice. The deadline for submitting comments is February 21, 2008.
December 21, 2007
EPA is releasing the IRIS 2008 Agenda which includes a list of chemicals currently being assessed and a list of 20 candidates for upcoming IRIS assessments in a [Federal Register Dec 21, 2007].
December 20, 2007
On November 1, 2007, an external peer review panel workshop was hosted by an independent contractor on the Toxicological Review of Tetrahydrofuran (External Review Draft). Completing this review, a final report of the comments from the workshop were collected and are now available.
December 13, 2007
Picture from the Long Creek Watershed EPA annnounces the release of the Causal Analysis of Biological Impairment in Long Creek: A Sandy-Bottomed Stream in Coastal Southern Maine final document which has been completed and posted on the NCEA Web site.

The photo (on the left) is taken from the Long Creek Watershed in Maine.
December 05, 2007
On Aug 29, 2007, an external peer review panel workshop was hosted by an independent contractor on the Toxicological Review of Bromobenzene (External Review Draft). Completing this review, a final report of the comments from the workshop were collected and are now available.
November 29, 2007
EPA announced an External Peer Review Worshop that was hosted on Jan 16, 2008 in a [Federal Register Nov 29, 2007].
November 29, 2007
NCEA supports an active postdoctoral program providing federal research experience to up-and-coming environmental scientists. The Center currently supports a variety of postdoctoral professionals and seeks applications for this latest position. Appointments are for 3 years and include a full package of benefits.
November 16, 2007
EPA announces the release of the Toxicological Review of 1,2,3-Trichloropropane in the [Federal Register Nov 16, 2007]. This draft assessment is provided for public viewing and comment. Public comments received on the Toxicological Review within the external review period (next 60 days) will be provided to the peer reviewers prior to the meeting for their consideration. Any comments not received within the requested time period will be considered by EPA in their revisions.
October 04, 2007
EPA is announcing a 45-day public comment period for the draft document,"An Exploratory Study: Assessment of Modeled Dioxin Exposure in Ceramic Art Studios (External Review Draft)" , as announced in the [Federal Register Oct 4, 2007]. In addition EPA will convene an independent panel of experts and organize and conduct an external peer-review workshop to review the external review draft. The deadline for comments is November 18, 2007.
September 28, 2007
The release of this final human health assessment is part of EPA's continuing efforts to provide quality human health risk information that has been subjected to an open and rigorous independent peer review process. This document will provide science-based human health assessment information to support Agency regulatory activities. In addition, other government and private entities use this information to help characterize public health risks of chemical substances in a site-specific situation and thereby support risk management decisions designed to protect public health.
September 28, 2007
EPA annouces that NCEA's BMDS website has been updated to add the new, beta-test BMDS 2.0. BMDS 2.0 employs a new, markedly improved user interface and has enhanced batch processing capabilities. BMDS 2.0 includes the same models available in BMDS 1.4.1, and adds new models which satisfy a 2007 APM. The new models include a Hill model for dichotomous responses, which allows an asymptote at less than 100% response rate, and new versions of the familiar quantal models which implement alternative background terms (background additive to dose). The website also includes external review documents for the new models with additive background.
September 28, 2007
EPA is announcing the release of CADDIS 2007 which increases access to relevant information useful for causal analysis and provides methods and tools that practitioners can use to analyze their own data. The new Candidate Cause section provides overviews of commonly encountered causes of impairments to aquatic systems: metals, sediments, nutrients, flow alteration, temperature, ionic strength, and low dissolved oxygen. CADDIS includes new Conceptual Models that illustrate the relationships from sources to stressors to biological effects. An Interactive Conceptual Model for phosphorus links the diagram with supporting literature citations. The new Analyzing Data section helps practitioners analyze their data sets and interpret and use those results as evidence within the USEPA causal assessment process. Downloadable tools include a graphical user interface statistical package (CADStat), and programs for use with the freeware R statistical package, and a Microsoft Excel template. These tools can be used to quantify associations between causes and biological impairments using innovative methods such as species-sensitivity distributions, biological inferences, conditional probability analysis, and quantile regression analysis. New Databases have been added that provide stressor-response associations based on laboratory toxicity tests of metals and field observational data. This was announced in the [Federal Register Oct 4, 2007].
September 28, 2007
EPA is announcing the release of the draft document, Integrated Science Assessment for Sulfur Oxides - Health Criteria and the Annexes (First External Review Draft) for public review and comment as described in the [Federal Register Sep 28, 2007]. The deadline for submitting comments is November 30, 2007.
September 27, 2007
EPA is announcing the release of three documents from the external review of BMDS 2.0 with New Quantal Models. The documents include the consolidated comments from the reviewers, the disposition of comments and the draft development and testing report. BMDS 2.0 Beta will be posted to the site shortly.
September 27, 2007

Cover of the Dermal Exposure Assessment Final Report EPA is announcing the completion of the final report, Dermal Exposure Assessment: A Summary of EPA Approaches and its availability to the public. This final report presents a concise description and evaluation of the approaches used in the Agency for dermal exposure assessment including a discussion about harmonization and research needs in this area. The report is intended to be used by EPA program offices in their efforts to refine and revise the methods they use to assess dermal exposure to chemicals in the environment and to facilitate cooperation in the development of new methods, models and guidance for dermal exposure assessment.

September 19, 2007
EPA announces they will hold a public meeting of the Adaptation for Climate-Sensitive Ecosystems and Resources Advisory Committee (ACSERAC) on Oct 22-23, 2007 in Bethesda, Maryland, by a [Federal Register Sep 17, 2007].
September 19, 2007
EPA announces they will hold a public meeting of the Human Impacts of Climate Change Federal Advisory Committee (HICCAC) on Oct 15-16, 2007 in Alexandria, Virginia, by a [Federal Register Sep 17, 2007].
September 13, 2007
EPA is preparing an Integrated Science Assessment (ISA) as part of the review of the National Ambient Air Quality Standards (NAAQS) for Carbon Monoxide (CO). This is intended to update and revise, where appropriate, the scientific assessment presented in the Air Quality Criteria for Carbon Monoxide (EPA 600/P-99/001F), published in June 2000. Interested parties are invited to assist the EPA in developing and refining the scientific information base for the review of the CO NAAQS by submitting research studies that have been published, accepted for publication, or presented at a public scientific meeting. This was announced in a [Federal Register Sep 13, 2007].
September 05, 2007
EPA announced a peer-review workshop for the external review draft of the Child-Specific Exposure Factors Handbook in a [Federal Register Sep 9, 2007]. The workshop will occur on September 19-20, 2007.
August 30, 2007
EPA is announcing that the First External Review Draft of the Integrated Science Assessment (ISA) for Oxides of Nitrogen - Health Criteria has been made available for independent peer review and public review in an [Federal Register Aug 30, 2007]. This draft ISA document represents a concise synthesis and evaluation of the most policy-relevant science and will ultimately provide the scientific bases for EPA's decision regarding whether the current standard for NO2 sufficiently protects public health.
August 21, 2007
EPA is announcing a 45-day public comment period on the document, Preliminary review of adaptation options for climate-sensitive ecosystems and resources (External Review Draft) in an August 21, 2007 Federal Register Notice. The notice has been posted by NOAA/ Department of Commerce on behalf of the U.S. Climate Change Science Program (CCSP). The document will be available from the CCSP website with instructions for making comments.
August 20, 2007
EPA is announcing the release of the Toxicological Review of Tetrahydrofuran and notice of the External Peer Review Panel Meeting in an [Federal Register Aug 20, 2007]. This draft assessment is provided for public viewing and comment. Public comments received on the Toxicological Review within the external review period (next 60 days) will be provided to the peer reviewers prior to the meeting for their consideration. Any comments not received within the requested time period will be considered by EPA in their revisions.
August 13, 2007

Cover of the 2007 Climate Change: American Samoa Coral Reef document EPA announces the release of the final document, Climate Change and Interacting Stressors: Implications for Coral Reef Management in American Samoa, which provides a synthesis of information on the interactive effects of climate change and other stressors on the reefs of American Samoa as well as an assessment of potential management responses. The purpose of the report is to provide the coral reef managers of American Samoa, as well as other coral reef managers in the Pacific region, with some management options to help enhance the capacity of local coral reefs to resist the negative effects of climate change.

August 10, 2007
EPA announces the release of the draft document, Effects of Climate Change on Aquatic Invasive Species and Implications for Management and Research (External Review Draft) in the [Federal Register Aug 10, 2007]. This document is provided for a 30-day public viewing and comment period. Public comments received on the document before Sept 10th will be provided to the external peer reviewers for their consideration. Any comments not received within the requested time period, may not be considered by EPA in the final report.
August 10, 2007
EPA announces the release of the draft document, Climate Change Effects on Stream and River Biological Indicators: A Preliminary Analysis (External Review Draft) in the [Federal Register Aug 10, 2007]. This document is provided for a 30-day public viewing and comment period. Public comments received on the document before Sept 10th will be provided to the external peer reviewers for their consideration. Any comments not received within the requested time period, may not be considered by EPA in the final report.
August 10, 2007
EPA announces the release of the draft document, Climate and Land Use Change Effects on Ecological Resources in Three Watersheds: A Synthesis Report (External Review Draft) in the [Federal Register Aug 10, 2007]. This document is provided for a 30-day public viewing and comment period. Public comments received on the document before Sept 10th will be provided to the external peer reviewers for their consideration. Any comments not received within the requested time period, may not be considered by EPA in the final report.
August 03, 2007
On May 15, 2007, an external peer review panel workshop was hosted by an independent contractor on the Toxicological Review of Nitrobenzene (External Review Draft). Completing this review, a final report of the comments from the workshop were collected and are now available.
July 31, 2007
The release of this final human health assessment is part of EPA's continuing efforts to provide quality human health risk information that has been subjected to an open and rigorous independent peer review process. This document will provide science-based human health assessment information to support Agency regulatory activities. In addition, other government and private entities use this information to help characterize public health risks of chemical substances in a site-specific situation and thereby support risk management decisions designed to protect public health.
July 20, 2007
EPA is announcing a 45-day public comment period on the document, Analyses of the Effects of Global Change on Human Health and Welfare and Human Systems in a July 20, 2007 Federal Register Notice. The notice has been posted by NOAA/ Department of Commerce on behalf of the U.S. Climate Change Science Program (CCSP). The document will be available from the CCSP website with instructions for making comments.
July 12, 2007
EPA is announcing the release of the final workshop report, Summary Report of a Peer Involvement Workshop on the Development of an Exposure Factors Handbook for the Aging. This report provides an overview of a meeting held February 14-15, 2007 which was organized to discuss factors affecting exposures of older adults to environmental chemicals, as well as issues related to the development of an exposure factors handbook for the aging.
June 20, 2007
The EPA is announcing that a workshop entitled Oxides of Nitrogen and Sulfur (NOX/SOX) Secondary National Ambient Air Quality Standards (NAAQS) Workshop is being organized by EPA's National Center for Environmental Assessment (NCEA), Office of Research and Development and EPA's Office of Air Quality Planning and Standards (OAQPS), Office of Air and Radiation. The workshop will be held on July 17, 18 and 19, 2007 in Research Triangle Park, North Carolina. The workshop will be open to attendance by interested public observers on a first-come, first-served basis up to the limits of available space.
June 20, 2007
NCEA is announcing two upcoming PM workshops.  These workshops will be held in Research Triangle Park, NC, from July 11-13, 2007 and July 16, 2007, respectively.  The workshops will focus on initiating the next review of the national ambient air quality standards (NAAQS) for particulate matter (PM).  The workshops will provide an opportunity for external experts as well as EPA staff to highlight significant new and emerging research, and to make individual recommendations to the Agency regarding the design and scope of the reviews for the three criteria pollutants to ensure they address key policy-relevant issues and consider the new science relevant to informing our understanding of these issues.  The first workshop is being held to inform the review of the primary NAAQS (health-based) while the second workshop is focused on information for the secondary NAAQS (environmental or welfare effects).  The workshops are open to the public.
June 14, 2007
EPA is announcing the release of the Toxicological Review of Bromobenzene and notice of the External Peer Review Panel Meeting in a [Federal Register Jun 14, 2007]. This draft assessment is provided for public viewing and comment. Public comments received on the Toxicological Review within the external review period (next 60 days) will be provided to the peer reviewers prior to the meeting for their consideration. Any comments not received within the requested time period will be considered by EPA in their revisions.
June 05, 2007
On April 20, 2007, an external peer review panel workshop was hosted by an independent contractor on the Toxicological Review of 1,1,1-Trichloroethane (External Review Draft). Completing this review, a final report of the comments from the workshop were collected and are now available.
May 10, 2007
EPA is announcing the establishment of the Human Impacts of Climate Change Advisory Committee (HICCAC) in a [Federal Register May 10, 2007]. The purpose of this Committee is provide advice on the conduct of a study titled "Analyses of the effects of global change on human health and welfare and human systems" to be conducted as part of the U.S. Climate Change Science Program (CCSP). The draft prospectus for the study is on the CCSP Web site at http://www.climatescience.gov/Library/sap/sap4-6/default.php.
May 10, 2007
EPA is announcing the establishment of the Adaptation for Climate-Sensitive Ecosystems and Resources Advisory Committee (ACSERAC) in a [Federal Register May 10, 2007]. The purpose of this Committee is to provide advice on the conduct of a study titled, "Preliminary Review of Adaptation Options for Climate-Sensitive Ecosystems and Resources" to be conducted as part of the U.S. Climate Change Science Program (CCSP). The draft prospectus for the study is on the CCSP Web site at http://www.climatescience.gov/Library/sap/sap4-4/default.php.
May 10, 2007

Cover of the 2007 ROE Science Report document EPA is announcing the start of a 45-day public comment period for the draft document titled, EPA's 2007 Report on the Environment: Science Report (ROE SR) (EPA/600/R-07/045) as described in the [Federal Register May 10, 2007]. This study is an analysis based on data derived from the latest and most reliable indicators to help understand critical trends in the environment and human health.

April 23, 2007

Tox & Risk Assessment Meeting Registration PageEPA is hosting the 2007 Toxicology and Risk Assessment Conference in West Chester, OH, April 23- 26, 2007 with the theme "Emerging Issues and Challenges in Risk Assessment." Registration (for the conference and hotel), directions and a draft agenda are now available.

April 19, 2007

Cover of the Food Intake Analysis document EPA is announcing the release of the final report, Analysis of Total Food Intake and Composition of Individual's Diet Based on USDA's 1994-1996, 98 Continuing Survey of Food Intakes by Individuals (CSFII) (Final). This study is an analysis based on data derived from the U.S. Department of Agriculture's 1994-96, 1998 Continuing Survey of Food Intake by Individuals (CSFII) to characterize the consumption of food by the people of the United States.

April 19, 2007

Cover of the Fat Intake Analysis document EPA is announcing the release of the final report, Analysis of Fat Intake Based on USDA's 1994-1996, 1998 Continuing Survey of Food Intakes by Individuals (CSFII) (Final). This study is an analysis based on data derived from the U.S. Department of Agriculture's 1994-96, 1998 Continuing Survey of Food Intake by Individuals (CSFII) and EPA's Food Commodity Intake Database (FCID).

April 13, 2007
On February 28, 2007, an external peer review panel workshop was hosted by an independent contractor on the Toxicological Review of 2,2,4-Trimethylpentane (External Review Draft). Completing this review, a final report of the comments from the workshop were collected and are now available.
April 05, 2007

Cover of the Pilot Survey Soil ReportEPA is announcing the release of the final report, "Pilot Survey of Levels of Polychlorinated Dibenzo-p-dioxins, Polychlorinated Dibenzofurans, Polychlorinated Biphenyls and Mercury in Rural Soils of the United States." This study is a compilation of the measurements of levels of dioxins, PCBs and mercury in soil samples from numerous rural locations across the country.

April 04, 2007
On February 22, 2007, an external peer review panel workshop was hosted by an independent contractor on the PBDE Documents [tetraBDE (BDE-47), pentaBDE (BDE-99), hexaBDE (BDE-153), and decaBDE (BDE-209)]. Completing this review, a final report of the comments from the workshop were collected and are now available.
March 29, 2007
Publication: A Screening Assessment of the Potential Impacts of Climate Change on the Costs of Implementing Water Quality-Based Effluent Limits at Publicly-Owned Treatment Works (POTWS) in the Great Lakes Region (External Review Draft)
EPA is announcing the start of a 30-day public comment period for the draft document titled, "A Screening Assessment of the Potential Impacts of Climate Change on the Costs of Implementing Water Quality-Based Effluent Limits at Publicly-Owned Treatment Works in the Great Lakes Region" (EPA/600/R-07/034A) as described in the [Federal Register Mar 29, 2007].
March 29, 2007
EPA is announcing the start of a 30-day public comment period for the draft document titled, "A Screening Assessment of the Potential Impacts of Climate Change on Combined Sewer Overflow (CSO) Mitigation in the Great Lakes and New England Regions" (EPA/600/R-07/033A) as described in the [Federal Register Mar 29, 2007].
March 29, 2007
EPA announces the release of the Toxicological Review of Nitrobenzene and notice of the External Peer Review Panel Meeting in the [Federal Register Mar 29, 2007]. This draft assessment is provided for public viewing and comment. Public comments received on the Toxicological Review within the external review period (next 45 days) will be provided to the peer reviewers prior to the meeting for their consideration. Any comments not received within the requested time period will be considered by EPA in their revisions.
March 23, 2007
EPA is announcing the public review of the CADDIS On-line application. Recent improvements are available on a development site at http://caddis.tetratech-ffx.com as part of an external peer review. Access the site using the username/password "public/public". Please submit all comments into the Regulations.gov web site at http://www.regulations.gov, search for the keyword, Docket ID No. "EPA-HQ-ORD-2005-0001 " as described in the [Federal Register Mar 23, 2007].
March 08, 2007

Cover of the Metals Framework document EPA's Risk Assessment Forum Staff recently released the final document, Framework for Metals Risk Assessment, announced in a Press Release on March 8, 2007, outlines key principles about metals and describes how they should be considered in conducting human health and ecological risk assessments. The Framework seeks to advance our understanding of the impact of metals in a consistent manner across the Agency's programs since inorganic metals and metal compounds present unique issues for risk assessors.

March 02, 2007
EPA announces the Ecological Risk Assessment Support Center (ERASC) recently completed an external review draft of the document titled, "Evaluating Ecological Risk to Invertebrate Receptors from PAHs in Sediments at Hazardous Waste Sites". This document, announced by a [Federal Register Mar 2, 2007], provides an overview of an approach for assessing risk to invertebrate receptors resulting from exposure to polycyclic aromatic hydrocarbon compounds (PAHs) in contaminated sediments.
February 27, 2007

Benchmark Dose SoftwareEPA is announcing the latest update to the Benchmark Dose Software (BMDS) tool which is used to facilitate the application of benchmark dose (BMD) methods to EPA hazardous pollutant risk assessments. This latest version (1.4) contains seventeen (17) different models that are appropriate for the analysis of dichotomous (quantal) data (Gamma, Logistic, Log-Logistic, Multistage, Probit, Log-Probit, Quantal-Linear, Quantal-Quadratic, Weibull and Multistage-Cancer), continuous data (Linear, Polynomial, Power, and Hill) and nested developmental toxicology data (NLogistic, NCTR, and Rai & Van Ryzin).

February 27, 2007
EPA announces the release of the Toxicological Review of 1,1,1-Trichloroethane and notice of the External Peer Review Panel Meeting in the [Federal Register Feb 27, 2007]. This draft assessment is provided for public viewing and comment. Public comments received on the Toxicological Review within the external review period (next 45 days) will be provided to the peer reviewers prior to the meeting for their consideration. Any comments not received within the requested time period will be considered by EPA in their revisions.
February 26, 2007
EPA is hosting an external peer review panel meeting on February 28, 2007 to review the draft document titled, Toxicological Review of 2,2,4-Trimethylpentane: In Support of Summary Information on the Integrated Risk Information System (IRIS) (NCEA-S-2202), related to the human health assessment for 2,2,4-trimethylpentane. Following the External Peer Review, the final assessment will be posted in the IRIS database.
February 26, 2007
EPA announces a workshop that will be held on February 26-28 on the Assessment of Health Science for the Review of the National Ambient Air Quality Standards (NAAQS) for Nitrogen (NOX) and Sulfur Oxides (SOX). Find out more in the [Federal Register Feb 9, 2007].
February 08, 2007
EPA announces the release of the report Relationships Among Exceedances of Chemical Criteria or Guidelines, the Results of Ambient Toxicity Tests, and Community Metrics in Aquatic Ecosystems, which presents two studies where the three general approaches for the ecological assessment of contaminant exposure and effects in surface waters or sediments were applied to stream sites sampled in the Southern Rockies ecoregion of Colorado and to estuarine sites sampled in the Virginian Estuarine Province of the Atlantic coast.
January 24, 2007
EPA is announcing the start of a 30-day public comment period for the draft document titled, "Metabolically-Derived Human Ventilation Rates: A Revised Approach Based Upon Oxygen Consumption Rates" (EPA/600/R-06/129A) as described in the [Federal Register Jan 24, 2007].
January 22, 2007

Cover of the CSEFH document EPA is announcing a re-opening of the public comment period for the draft document titled, Child-Specific Exposure Factors Handbook (EPA/600/R-06/096A) as described in the [Federal Register Jan 22, 2006]. The original 60-day public comment period was announced in the Federal Register on October 6, 2006. In response to requests to extend the comment period, EPA has re-opened the comment period for an additional 30 days. The re-opening comment period will end on February 21, 2007.

January 17, 2007
EPA is announcing the external review of the CADDIS On-line application's new additions. Upcoming improvements are available on a development site at http://caddis.tetratech-ffx.com. Please submit all comments into the Regulations.gov web site at http:www.regulations.gov, search for the keyword, Docket ID No. "EPA-HQ-ORD-2005-0001 " as described in the [Federal Register Jan 17, 2007].

Jump to main content.