California Code of Regulations
Title 22 - Social Security
Division 4.5 - Environmental Health Standards for the Management of Hazardous Waste
Chapter 11 - Identification and Listing of Hazardous Waste
Appendix XII - California Hazardous Waste Codes
Universal Citation: 22 CA Code of Regs XII
Current through Register 2024 Notice Reg. No. 12, March 22, 2024
(a) Subdivisions (b) and (c) of this appendix establish the California Hazardous Waste Code Numbers assigned to wastes which have been identified as hazardous wastes pursuant to the characteristics of hazardous waste as set forth in article 3 of this chapter or pursuant to the lists of hazardous wastes in article 4 of this chapter. These Waste Code Numbers shall be used in complying with the notification requirements of Health and Safety Code section 25153.6 and, where applicable, in the recordkeeping and reporting requirements under chapters 12 through 15, 18, and 20 of this division.
(1) In cases where hazardous wastes may have
both an EPA Hazardous Waste Number and a California Hazardous Waste Code
Number, both numbers shall be used in complying with the notification
requirements of Health and Safety Code section
25153.6
and the recordkeeping and reporting requirements under chapters 12 through 15,
18, and 20 of this division.
(2) If
both a California Hazardous Waste Code from the "California Restricted Wastes"
category and a code from another category of California Hazardous Waste Codes
apply to a specific hazardous waste, the code from the "California Restricted
Wastes" category shall be used.
(b) List of California Hazardous Waste Codes arranged in numerical order:
|
Waste Code Number |
Waste Description |
| (1) Inorganics: | |
| 121 | Alkaline solution (pH [LESS THAN EQUAL TO] 12.5) with metals (antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, nickel, selenium, silver, thallium, vanadium, and zinc) |
| 122 | Alkaline solution without metals (pH > 12.5) |
| 123 | Unspecified alkaline solution |
| 131 | Aqueous solution (2 < pH < 12.5) containing reactive anions (azide, bromate, chlorate, cyanide, fluoride, hypochlorite, nitrite, perchlorate, and sulfide anions) |
| 132 | Aqueous solution with metals (restricted levels and see waste code 121 for a list of metals) |
| 133 | Aqueous solution with 10% or more total organic residues |
| 134 | Aqueous solution with less than 10% total organic residues |
| 135 | Unspecified aqueous solution |
| 141 | Off-specification, aged, or surplus inorganics |
| 151 | Asbestos-containing waste |
| 161 | Fluid-cracking catalyst (FCC) waste |
| 162 | Other spent catalyst |
| 171 | Metal sludge (see 121) |
| 172 | Metal dust (see 121) and machining waste |
| 181 | Other inorganic solid waste |
| (2) Organics: | |
| 211 | Halogenated solvents (chloroform, methyl chloride, perchloroethylene, etc.) |
| 212 | Oxygenated solvents (acetone, butanol, ethyl acetate, etc.) |
| 213 | Hydrocarbon solvents (benzene, hexane, Stoddard, etc.) |
| 214 | Unspecified solvent mixture |
| 221 | Waste oil and mixed oil |
| 222 | Oil/water separation sludge |
| 223 | Unspecified oil-containing waste |
| 231 | Pesticide rinse water |
| 232 | Pesticides and other waste associated with pesticide production |
| 241 | Tank bottom waste |
| 251 | Still bottoms with halogenated organics |
| 252 | Other still bottom waste |
| 261 | Polychlorinated biphenyls and material containing PCB's |
| 271 | Organic monomer waste (includes unreacted resins) |
| 272 | Polymeric resin waste |
| 281 | Adhesives |
| 291 | Latex waste |
| 311 | Pharmaceutical waste |
| 321 | Sewage sludge |
| 322 | Biological waste other than sewage sludge |
| 331 | Off-specification, aged, or surplus organics |
| 341 | Organic liquids (nonsolvents) with halogens |
| 342 | Organic liquids with metals (see 121) |
| 343 | Unspecified organic liquid mixture |
| 351 | Organic solids with halogens |
| 352 | Other organic solids |
| (3) Sludges: | |
| 411 | Alum and gypsum sludge |
| 421 | Lime sludge |
| 431 | Phosphate sludge |
| 441 | Sulfur sludge |
| 451 | Degreasing sludge |
| 461 | Paint sludge |
| 471 | Paper sludge/pulp |
| 481 | Tetraethyl lead sludge |
| 491 | Unspecified sludge waste |
| (4) Miscellaneous: | |
| 511 | Empty pesticide containers 30 gallons or more |
| 512 | Other empty containers 30 gallons or more |
| 513 | Empty containers less than 30 gallons |
| 521 | Drilling mud |
| 531 | Chemical toilet waste |
| 541 | Photochemicals/photoprocessing waste |
| 551 | Laboratory waste chemicals |
| 561 | Detergent and soap |
| 571 | Fly ash, bottom ash, and retort ash |
| 581 | Gas scrubber waste |
| 591 | Baghouse waste |
| 611 | Contaminated soil from site clean-ups |
| 612 | Household waste |
| 613 | Auto shredder waste |
| 614 | Treated wood waste |
| (5) California Restricted Wastes: | |
| 711 | Liquids with cyanides >= 1000 mg/l |
| 721 | Liquids with arsenic >= 500 mg/l |
| 722 | Liquids with cadmium >= 100 mg/l |
| 723 | Liquids with chromium (VI) >= 500 mg/l |
| 724 | Liquids with lead >= 500 mg/l |
| 725 | Liquids with mercury >= 20 mg/l |
| 726 | Liquids with nickel >= 134 mg/l |
| 727 | Liquids with selenium >= 100 mg/l |
| 728 | Liquids with thallium >= 130 mg/l |
| 731 | Liquids with polychlorinated biphenyls >= 50 mg/l |
| 741 | Liquids with halogenated organic compounds >= 1000 mg/l |
| 751 | Solids or sludges with halogenated organic compounds >= 1000mg/kg |
| 791 | Liquids with pH [LESS THAN EQUAL TO] 2 |
| 792 | Liquids with pH [LESS THAN EQUAL TO] 2 with metals |
| 801 | Waste potentially containing dioxins |
(c) List of California Hazardous Waste Codes arranged alphabetically within each numbered category in this subdivision:
| Waste Code Number | Waste Description |
| (1) Inorganics: | |
| 121 | Alkaline solution (pH >= 12.5) with metals (antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, nickel, selenium, silver, thallium, vanadium, and zinc) |
| 122 | Alkaline solution without metals (pH >= 12.5) |
| 131 | Aqueous solution (2 < pH < 12.5) containing reactive anions (azide, bromate, chlorate, cyanide, fluoride, hypochlorite, nitrite, perchlorate, and sulfide anions) |
| 133 | Aqueous solution with 10% or more total organic residues |
| 134 | Aqueous solution with less than 10% total organic residues |
| 132 | Aqueous solution with metals (restricted levels and see waste code 121 for a list of metals) |
| 151 | Asbestos-containing waste |
| 161 | Fluid-cracking catalyst (FCC) waste |
| 172 | Metal dust (see 121) and machining waste |
| 171 | Metal sludge (see 121) |
| 141 | Off-specification, aged, or surplus inorganics |
| 181 | Other inorganic solid waste |
| 162 | Other spent catalyst |
| 123 | Unspecified alkaline solution |
| 135 | Unspecified aqueous solution |
| (2) Organics: | |
| 281 | Adhesives |
| 322 | Biological waste other than sewage sludge |
| 211 | Halogenated solvents (chloroform, methyl chloride, perchloroethylene, etc.) |
| 213 | Hydrocarbon solvents (benzene, hexane, Stoddard, etc.) |
| 291 | Latex waste |
| 331 | Off-specification, aged, or surplus organics |
| 222 | Oil/water separation sludge |
| 341 | Organic liquids (nonsolvents) with halogens |
| 342 | Organic liquids with metals (see 121) |
| 271 | Organic monomer waste (includes unreacted resins) |
| 351 | Organic solids with halogens |
| 352 | Other organic solids |
| 252 | Other still bottom waste |
| 212 | Oxygenated solvents (acetone, butanol, ethyl acetate, etc.) |
| 231 | Pesticide rinse water |
| 232 | Pesticides and other waste associated with pesticide production |
| 311 | Pharmaceutical waste |
| 261 | Polychlorianted biphenyls and material containing PCBs |
| 272 | Polymeric resin waste |
| 321 | Sewage sludge |
| 251 | Still bottoms with halogenated organics |
| 241 | Tank bottom waste |
| 223 | Unspecified oil-containing waste |
| 343 | Unspecified organic liquid mixture |
| 214 | Unspecified solvent mixture |
| 221 | Waste oil and mixed oil |
| (3) Sludges: | |
| 411 | Alum and gypsum sludge |
| 451 | Degreasing sludge |
| 421 | Lime sludge |
| 461 | Paint sludge |
| 471 | Paper sludge/pulp |
| 431 | Phosphate sludge |
| 441 | Sulfur sludge |
| 481 | Tetraethyl lead sludge |
| 491 | Unspecified sludge waste |
| (4) Miscellaneous: | |
| 613 | Auto shredder waste |
| 591 | Baghouse waste |
| 531 | Chemical toilet waste |
| 611 | Contaminated soil from site clean-ups |
| 561 | Detergent and soap |
| 521 | Drilling mud |
| 513 | Empty containers less than 30 gallons |
| 511 | Empty pesticide containers 30 gallons or more |
| 571 | Fly ash, bottom ash, ad retort ash |
| 581 | Gas scrubber waste |
| 612 | Household waste |
| 551 | Laboratory waste chemicals |
| 512 | Other empty containers 30 gallons or more |
| 541 | Photochemical/photoprocessing waste |
| 614 | Treated wood waste |
| (5) California Restricted Wastes: | |
| 721 | Liquids with arsenic >= 500 mg/l |
| 722 | Liquids with cadmium >= 100 mg/l |
| 723 | Liquids with chromium (VI) >= 500 mg/l) |
| 711 | Liquids with cyanides >= 1000 mg/l |
| 741 | Liquids with halogenated organic compounds >= 1000 mg/l |
| 724 | Liquids with lead >= 500 mg/l |
| 725 | Liquids with mercury >= 20 mg/l |
| 726 | Liquids with nickel >= 134 mg/l |
| 791 | Liquids with pH [LESS THAN EQUAL TO] 2 |
| 792 | Liquids with pH [LESS THAN EQUAL TO] 2 with metals |
| 731 | Liquids with polychlorinated biphenyls >= 50 mg/l |
| 727 | Liquids with selenium >= 100 mg/l |
| 728 | Liquids with thallium >= 130 mg/l |
| 751 | Solids or sludges with halogenated organic compounds >= 1000 mg/l |
| 801 | Waste potentially containing dioxins |
1. New section
filed 5-24-91; effective 7-1-91 (Register 91, No. 22).
2. Amendment
of subsections (b)(4) and (c)(4) and NOTE filed 6-18-2007; operative 7-1-2007
pursuant to Government Code section
11343.4
(Register 2007, No. 25).
Note: Authority cited: Sections 25150 and 58012, Health and Safety Code. Reference: Sections 25117.9, 25122.7, and 25150, Health and Safety Code.
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