Waste Management

Download Risk-Based Waste Classification in California (Compass by National Research Council, Division on Earth and Life PDF

By National Research Council, Division on Earth and Life Studies, Commission on Life Sciences, Committee on Risk-Based Criteria for Non-RCRA Hazardous Waste

Addresses the regulatory requirement less than part 57004 of the California well-being and protection Code. Discusses the medical foundation of the proposed waste type process, topic to exterior clinical peer evaluation by way of the nationwide Academy of Sciences, and the collage of California. Softcover.

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Wastes are considered to be hazardous if they have an acute oral LD50 of less than 2,500 mg/kg of body weight, an acute dermal LD50 of less than 4,300 mg/kg, an acute inhalation LC50 of less than 10,000 parts per million (ppm), or an aquatic LC 50 (based on a fish bioassay) of less than 500 mg/L. An acute oral toxicity threshold of 2,500 mg of a chemical per kilogram of body weight was established by California statute on January 1, 1997 (DTSC 1998b). Acute dermal and inhalation (vapor) toxicity limits were established by multiplying the "highly hazardous" level (LD50 or LC50 values) recommended by the National Institute for Occupational Safety and Health (NIOSH 1974) by a safety factor of 100.

Need for Change in Waste-Classification System For the past 3 years, California has been engaged in a regulatory structure update (RSU). The aim of the RSU is to reduce regulatory burdens while retaining requirements needed to protect the citizens and environment of California. The approach of the RSU is to review and update California's hazardous-waste regulations using the most current scientific Copyright © National Academy of Sciences. All rights reserved. About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files.

Html INTRODUCTION 17 validity of the scenarios and models is assessed in terms of their protectiveness of the health of the California population and environment. The details of the component-model input parameters, assumptions made in running the exposure models, who the models are intended to protect, and other health-related values are explored in Chapter 4. Chapter 4 also compares the use of the two analytical extraction methods for leachates from solid waste (toxicity characteristic leaching procedure (TCLP) and waste extraction test (WET)) and DTSC's use of acute toxicity data for classifying wastes.

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