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Register July 2006 No. 607
Chapter NR 665
APPENDIX V
EXAMPLES OF POTENTIALLY INCOMPATIBLE WASTE
Many hazardous wastes, when mixed with other waste or materials at a hazardous waste facility, can produce effects which are harmful to human health and the environment, such as (1) heat or pressure, (2) fire or explosion, (3) violent reaction, (4) toxic dusts, mists, fumes or gases or (5) flammable fumes or gases.
Below are examples of potentially incompatible wastes, waste components, and materials, along with the harmful consequences which result from mixing materials in one group with materials in another group. The list is intended as a guide to owners or operators of treatment, storage and disposal facilities, and to enforcement and license granting officials, to indicate the need for special precautions when managing these potentially incompatible waste materials or components.
This list is not intended to be exhaustive. An owner or operator shall, as the rules require, adequately analyze that person's wastes in order to avoid creating uncontrolled substances or reactions of the type listed below, whether they are listed below or not.
It is possible for potentially incompatible wastes to be mixed in a way that precludes a reaction (e.g., adding acid to water rather than water to acid), neutralizes them (e.g., a strong acid mixed with a strong base) or controls substances produced (e.g., by generating flammable gases in a closed tank equipped so that ignition cannot occur, and burning the gases in an incinerator).
In the lists below, the mixing of a Group A material with a Group B material may have the potential consequence as noted. - See PDF for table PDF
Potential consequences: Heat generation; violent reaction. - See PDF for table PDF
Potential consequences: Fire or explosion; generation of flammable hydrogen gas. - See PDF for table PDF
Potential consequences: Fire, explosion or heat generation; generation of flammable or toxic gases. - See PDF for table PDF
Potential consequences: Fire, explosion or violent reaction. - See PDF for table PDF
Potential consequences: Generation of toxic hydrogen cyanide or hydrogen sulfide gas. - See PDF for table PDF
Potential consequences: Fire, explosion or violent reaction.
Note: The source of this appendix is “Law, Regulations, and Guidelines for Handling of Hazardous Waste", California department of health, February 1975.
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