OPPT_1-Bromopropane (1-BP)_A. Summary

Project ID

2476

Category

OPPT REs

Added on

Aug. 13, 2015, 9:14 a.m.

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Technical Report

Abstract  These guidelines revise and replace the U.S. Environmental Protection Agency’s (EPA’s, or the Agency’s) Guidelines for Carcinogen Risk Assessment, published in 51 FR 33992, September 24, 1986 (U.S. EPA, 1986a) and the 1999 interim final guidelines (U.S. EPA, 1999a; see U.S. EPA 2001b). They provide EPA staff with guidance for developing and using risk assessments. They also provide basic information to the public about the Agency's risk assessment methods.

Technical Report

Abstract  This draft risk evaluation for 1-Bromopropane (1-BP) was performed under the auspices of the Frank R. Lautenberg Chemical Safety for the 21st Century Act and disseminated for public comment and peer review. The Frank R. Lautenberg Chemical Safety for the 21st Century Act amended the Toxic Substances Control Act, the Nation’s primary chemicals management law, on June 22, 2016. As per EPA’s final rule, Procedures for Chemical Risk Evaluation Under the Amended Toxic Substances Control Act (82 FR 33726), EPA is taking comment on, and will also obtain peer review on, this draft risk evaluation for 1-BP. All conclusions, findings, and determinations in this document are subject to comment.

Book/Book Chapter
Technical Report

Abstract  On January 21, 2015, The United States Environmental Protection Agency (US EPA) announced the receipt of a complete petition requested the chemical n-Propyl Bromide (nPB, CAS # 106-94-5) be added to the list of hazardous air pollutants (HAPs) listed in Section 112 (b)(1) of the Clean Air Act (CAA) (CFR Vol. 80, No. 25, 6676-6679; Docket ID No. EPA-HQ-OAR-2014-0471). US EPA indicated that petitioners modeled air emissions from five facilities that use nPB. US EPA has solicited comments on the technical merits of this information. Trinity performed a critical evaluation of the methodologies and assumptions used by the petitioners to estimate emissions from each of the five facilities modeled by Exponent. Trinity also obtained current usage and emission data and estimated current emissions for facilities that were modeled by Gradient.

Technical Report

Abstract  This problem formulation document refines the conditions of use, exposures and hazards presented in the scope of the risk evaluation for 1-BP and presents refined conceptual models and analysis plans that describe how EPA expects to evaluate risk for 1-BP.

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