California Code of Regulations › Title 22 - Social Security › Division 4.5 - Environmental Health Standards for the Management of Hazardous Waste › Chapter 15 - Interim Status Standards for Owners and Operators of Hazardous Waste Transfer, Treatment, Storage, and Disposal Facilities › Appendix V - Examples of Potentially Incompatible Waste

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
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 transfer, treatment, storage, and
				  disposal facilities, and to enforcement and permit 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 regulations require, adequately analyze his wastes so
				  that he can 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) or that neutralizes them (e.g., a strong acid mixed with a
				  strong base), or that 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.
Group 1-A
Group 1-B
Acetylene sludge
Acid sludge
Akaline caustic liquids
Acid and water
Alkaline cleaner
Battery acid
Alkaline corrosive liquids
Chemical
						  cleaners
Alkaline corrosive battery fluid
Electrolyte,
						  acid
Caustic wastewater or solvent
Etching acid
						  liquid Pickling liquor and other corrosive acids
Lime sludge and other corrosive alkalies
Spent
						  acid
Lime wastewater
Spent mixed acid
Lime and water
Spent sulfuric acid
Spent caustic
Potential consequences: Heat generation; violent
				  reaction.
Group 2-A
Group 2-B
Aluminum
Any waste in Group 1-A or 1-B
Beryllium
Calcium
Lithium
Magnesium
Potassium
Sodium
Zinc powder
Other reactive metals and metal hydrides
Potential consequences: Fire or explosion; generation of
				  flammable hydrogen gas.
Group 3-A
Group 3-B
Alcohols
Any concentrated waste in Groups 1-A
						  or 1-B
Water
Calcium
Lithium
Potassium
PCl3,
						  CH3SiCl3
Metal hydrides
						  SO2Cl2,
						  SOCl2, Other water-reactive waste
Potential consequences: Fire, explosion, or heat generation;
				  generation of flammable or toxic gases.
Group 4-A
Group 4-B
Alcohols
Concentrated Group 1-A or 1-B
						  wastes
Aldehydes
Group 2-A wastes
Halogenated hydrocarbons
Nitrated hydrocarbons
Unsaturated hydrocarbons
Other reactive organic compounds and solvents
Potential consequences: Fire, explosion, or violent
				  reaction.
Group 5-A
Group 5-B
Spent cyanide and sulfide solutions
Group 1-B
						  wastes
Potential consequences: Generation of toxic hydrogen cyanide
				  or hydrogen sulfide gas.
Group 6-A
Group 6-B
Chlorates
Acetic acid and
Chlorine
other organic
Chlorites
acids
Chromic acid
Concentrated
Hyphochlorites
mineral acides
Nitrates
Group 2-A wastes
Nitric acid, fuming
Group 4-A wastes
Perchlorates
Other flammable and
Permanganates
combustible wastes
Peroxides
Other strong oxidizers
Potential consequences: Fire, explosion, or violent
				  reaction.
Source: "Law, Regulations, and Guidelines for Handling of
				  Hazardous Waste." California Department of Health, February
				  1975.
1. New section
				  filed 5-24-91; operative 7-1-91 (Register 91, No.
				  22).
Note: Authority cited: Sections
					 208,
					 25150
					 and
					 25159,
					 Health and Safety Code. Reference: Sections
					 208,
					 25159
					 and
					 25159.5,
					 Health and Safety Code; 40 CFR Part 265 , Appendix
					 V.