Methyl Bromide Risk Characterization in California (2000) / Chapter Skim
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1 Introduction
1 Introduction
Pages 8-11
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From page 8... ...
The primary health effect of acute methyl bromide exposure is neurotoxicity. Methyl bromide is a Class T ozone depleter and, as such, it is regulated by the Clean Air Act and the United Nations Montreal Protocol.
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From page 9... ...
Based on that risk assessment, permit conditions were developed to reduce acute exposures of workers and residents living near fumigated fields. These changes included promulgation of emergency regulations by DPR to require a longer aeration period following fumigation and lowering the reentry level from 5 ppm to ~ ppm in the wall voids.
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From page 10... ...
Consequently, DPR requested that the National Research Council conduct a review of its draft risk characterization document and provide a critique addressing the issues identified in the assigned task. This task was assigned to the Committee on Toxicology, which convened the Subcommittee for the Review ofthe Risk Assessment of Methyl Bromide (see Appendix A for biographical information)
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From page 11... ...
Chapter 3 summarizes DPR's exposure assessment, and the data quality and modeling techniques employed in its assessment are critiqued. Chapter 4 provides a review of DPR's risk assessment, including the adequacy of the toxicological database DPR used for hazard identification, an analysis of the margin-of-exposure data, and appropriateness of uncertainty factors used by DPR.
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