Code of Colorado Regulations
1000 - Department of Public Health and Environment
1007 - Hazardous Materials and Waste Management Division
6 CCR 1007-3 - HAZARDOUS WASTE
Part 261 - HAZARDOUS WASTE - IDENTIFICATION AND LISTING OF HAZARDOUS WASTE
Subpart D - Lists of Hazardous Wastes
Section 6 CCR 1007-3-261.32 - Hazardous Waste from Specific Sources

Universal Citation: 1000 CO Code Regs 6 CCR 1007-3-261.32

Current through Register Vol. 47, No. 17, September 10, 2024

(a) The following solid wastes are listed hazardous wastes from specific sources unless they are excluded under § § 260.20 and 260.22 and listed in Appendix IX.

Industry and EPA hazardous waste No

Hazardous waste

Hazard code

Wood preservation:

K001

Bottom sediment sludge from the treatment of wastewaters from wood preserving processes that use creosote and/or pentachlorophenol.

(T)

Inorganic pigments:

K002

Wastewater treatment sludge from the production of chrome yellow and orange pigments.

(T)

K003

Wastewater treatment sludge from the production of molybdate orange pigments.

(T)

K004

Wastewater treatment sludge from the production of zinc yellow pigments.

(T)

K005

Wastewater treatment sludge from the production of chrome green pigments.

(T)

K006

Wastewater treatment sludge from the production of chrome oxide green pigments (anhydrous and hydrated).

(T)

K007

Wastewater treatment sludge from the production of iron blue pigments.

(T)

K008

Oven residue from the production of chrome oxide green pigments.

(T)

Organic chemicals:

K009

Distillation bottoms from the production of acetaldehyde from ethylene.

(T)

K010

Distillation side cuts from the production of acetaldehyde from ethylene.

(T)

K011

Bottom stream from the wastewater stripper in the production of acrylonitrile.

(R, T)

K013

Bottom stream from the acetonitrile column in the production of acrylonitrile.

(R, T)

K014

Bottoms from the acetonitrile purification column in the production of acrylonitrile.

(T)

K015

Still bottoms from the distillation of benzyl chloride.

(T)

K016

Heavy ends or distillation residues from the production of carbon tetrachloride.

(T)

K017

Heavy ends (still bottoms) from the purification column in the production of epichlorohydrin.

(T)

K018

Heavy ends from the fractionation column in ethyl chloride production.

(T)

K019

Heavy ends from the distillation of ethylene dichloride in ethylene dichloride production.

(T)

K020

Heavy ends from the distillation of vinyl chloride in vinyl chloride monomer production.

(T)

K021

Aqueous spent antimony catalyst waste from fluoromethanes production.

(T)

K022

Distillation bottom tars from the production of phenol/acetone from cumene.

(T)

K023

Distillation light ends from the production of phthalic anhydride from naphthalene.

(T)

K024

Distillation bottoms from the production of phthalic anhydride from naphthalene.

(T)

K025

Distillation bottoms from the production of nitrobenzene by the nitration of benzene.

(T)

K026

Stripping still tails from the production of methy ethyl pyridines.

(T)

K027

Centrifuge and distillation residues from toluene diisocyanate production.

(R, T)

K028

Spent catalyst from the hydrochlorinator reactor in the production of 1,1,1-trichloroethane.

(T)

K029

Waste from the product steam stripper in the production of 1,1,1-trichloroethane.

(T)

K030

Column bottoms or heavy ends from the combined production of trichloroethylene and perchloroethylene.

(T)

K083

Distillation bottoms from aniline production.

(T)

K085

Distillation or fractionation column bottoms from the production of chlorobenzenes.

(T)

K093

Distillation light ends from the production of phthalic anhydride from ortho-xylene.

(T)

K094

Distillation bottoms from the production of phthalic anhydride from ortho-xylene.

(T)

K095

Distillation bottoms from the production of 1,1,1-trichloroethane.

(T)

K096

Heavy ends from the heavy ends column from the production of 1,1,1-trichloroethane.

(T)

K103

Process residues from aniline extraction from the production of aniline.

(T)

K104

Combined wastewater streams generated from nitrobenzene/aniline production.

(T)

K105

Separated aqueous stream from the reactor product washing step in the production of chlorobenzenes.

(T)

K107

Column bottoms from product separation from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides.

(C,T)

K108

Condensed column overheads from product separation and condensed reactor vent gases from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides.

(I,T)

K109

Spent filter cartridges from product purification from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides.

(T)

K110

Condensed column overheads from intermediate separation from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides.

(T)

K111

Product washwaters from the production of dinitrotoluene via nitration of toluene.

(C,T)

K112

Reaction by-product water from the drying column in the production of toluenediamine via hydrogenation of dinitrotoluene.

(T)

K113

Condensed liquid light ends from the purification of toluenediamine in the production of toluenediamine via hydrogenation of dinitrotoluene.

(T)

K114

Vicinals from the purification of toluenediamine in the production of toluenediamine via hydrogenation of dinitrotoluene.

(T)

K115

Heavy ends from the purification of toluenediamine in the production of toluenediamine via hydrogenation of dinitrotoluene.

(T)

K116

Organic condensate from the solvent recovery column in the production of toluene diisocyanate via phosgenation of toluenediamine.

(T)

K117

Wastewater from the reactor vent gas scrubber in the production of ethylene dibromide via bromination of ethene.

(T)

K118

Spent adsorbent solids from purification of ethylene dibromide in the production of ethylene dibromide via bromination of ethene.

(T)

K136

Still bottoms from the purification of ethylene dibromide in the production of ethylene dibromide via bromination of ethene.

(T)

K149

Distillation bottoms from the production of alpha- (or methyl-) chlorinated toluenes, ring-chlorinated toluenes, benzoyl chlorides, and compounds with mixtures of these functional groups, (This waste does not include still bottoms from the distillation of benzyl chloride.).

(T)

K150

Organic residuals, excluding spent carbon adsorbent, from the spent chlorine gas and hydrochloric acid recovery processes associated with the production of alpha-(or methyl-) chlorinated toluenes, ring-chlorinated toluenes, benzoyl chlorides, and compounds with mixtures of these functional groups.

(T)

K151

Wastewater treatment sludges, excluding neutralization and biological sludges, generated during the treatment of wastewaters from the production of alpha- (or methyl-) chlorinated toluenes, ring-chlorinated toluenes, benzoyl chlorides, and compounds with mixtures of these functional groups.

(T)

K156

Organic waste (including heavy ends, still bottoms, light ends, spent solvents, filtrates, and decantates) from the production of carbamates and carbamoyl oximes. (This listing does not apply to wastes generated from the manufacture of 3-iodo-2-propynyl n-butylcarbamate.).

(T)

K157

Wastewaters (including scrubber waters, condenser waters, washwaters, and separation waters) from the production of carbamates and carbamoyl oximes. (This listing does not apply to wastes generated from the manufacture of 3-iodo-2-propynyl n-butylcarbamate.).

(T)

K158

Bag house dusts and filter/separation solids from the production of carbamates and carbamoyl oximes. (This listing does not apply to wastes generated from the manufacture of 3-iodo-2-propynyl n-butylcarbamate.).

(T)

K159

Organics from the treatment of thiocarbamate wastes

(T)

K161

Purification solids (including filtration, evaporation, and centrifugation solids), bag house dust and floor sweepings from the production of dithiocarbamate acids and their salts. (This listing does not include K125 or K126).

(R,T)

K174

Wastewater treatment sludges from the production of ethylene dichloride or vinyl chloride monomer (including sludges that result from commingled ethylene dichloride or vinyl chloride monomer wastewater and other wastewater), unless the sludges meet the following conditions: (i) they are disposed of in a subtitle C or non- hazardous landfill licensed or permitted by the state or federal government; (ii) they are not otherwise placed on the land prior to final disposal; and (iii) the generator maintains documentation demonstrating that the waste was either disposed of in an on-site landfill or consigned to a transporter or disposal facility that provided a written commitment to dispose of the waste in an off-site landfill. Respondents in any action brought to enforce the requirements of subtitle C must, upon a showing by the government that the respondent managed wastewater treatment sludges from the production of vinyl chloride monomer or ethylene dichloride, demonstrate that they meet the terms of the exclusion set forth above. In doing so, they must provide appropriate documentation (e.g., contracts between the generator and the landfill owner/operator, invoices documenting delivery of waste to landfill, etc.) that the terms of the exclusion were met.

(T)

K175

Wastewater treatment sludges from the production of vinyl chloride monomer using mercuric chloride catalyst in an acetylene-based process.

(T)

K181

Nonwastewaters from the production of dyes and/or pigments (including nonwastewaters commingled at the point of generation with nonwastewaters from other processes) that, at the point of generation, contain mass loadings of any of the constituents identified in paragraph (c) of this section that are equal to or greater than the corresponding paragraph (c) levels, as determined on a calendar year basis. These wastes will not be hazardous if the nonwastewaters are: (i) disposed in a Subtitle D landfill unit subject to the design criteria in § 258.40, (ii) disposed in a Subtitle C landfill unit subject to either § 264.301 or § 265.301, (iii) disposed in other Subtitle D landfill units that meet the design criteria in § 258.40, § 264.301, or § 265.301, or (iv) treated in a combustion unit that is permitted under Subtitle C, or an onsite combustion unit that is permitted under the Clean Air Act. For the purposes of this listing, dyes and/or pigments production is defined in paragraph (b)(1) of this section. Paragraph (d) of this section describes the process for demonstrating that a facility's nonwastewaters are not K181. This listing does not apply to wastes that are otherwise identified as hazardous under §§ 261.21-261.24 and 261.31-261.33 at the point of generation. Also, the listing does not apply to wastes generated before any annual mass loading limit is met.

(T)

Inorganic chemicals:

K071

Brine purification muds from the mercury cell process in chlorine production, where separately prepurified brine is not used.

(T)

K073

Chlorinated hydrocarbon waste from the purification step of the diaphragm cell process using graphite anodes in chlorine production.

(T)

K106

Wastewater treatment sludge from the mercury cell process in chlorine production.

(T)

K176

Baghouse filters from the production of antimony oxide, including filters from the production of intermediates (e.g., antimony metal or crude antimony oxide).

(E)

K177

Slag from the production of antimony oxide that is speculatively accumulated or disposed, including slag from the production of intermediates (e.g., antimony metal or crude antimony oxide).

(T)

K178

Residues from manufacturing and manufacturing-site storage of ferric chloride from acids formed during the production of titanium dioxide using the chloride-ilmenite process.

(T)

Pesticides:

K031

By-product salts generated in the production of MSMA and cacodylic acid.

(T)

K032

Wastewater treatment sludge from the production of chlordane.

(T)

K033

Wastewater and scrub water from the chlorination of cyclopentadiene in the production of chlordane.

(T)

K034

Filter solids from the filtration of hexachlorocyclopentadiene in the production of chlordane.

(T)

K035

Wastewater treatment sludges generated in the production of creosote.

(T)

K036

Still bottoms from toluene reclamation distillation in the production of disulfoton.

(T)

K037

Wastewater treatment sludges from the production of disulfoton.

(T)

K038

Wastewater from the washing and stripping of phorate production.

(T)

K039

Filter cake from the filtration of diethylphosphorodithioic acid in the production of phorate.

(T)

K040

Wastewater treatment sludge from the production of phorate.

(T)

K041

Wastewater treatment sludge from the production of toxaphene.

(T)

K042

Heavy ends or distillation residues from the distillation of tetrachlorobenzene in the production of 2,4,5-T.

(T)

K043

2,6-Dichlorophenol waste from the production of 2,4-D.

(T)

K097

Vacuum stripper discharge from the chlordane chlorinator in the production of chlordane.

(T)

K098

Untreated process wastewater from the production of toxaphene.

(T)

K099

Untreated wastewater from the production of 2,4-D.

(T)

K123

Process wastewater (including supernates, filtrates, and washwaters) from the production of ethylenebisdithiocarbamic acid and its salt.

(T)

K124

Reactor vent scrubber water from the production of ethylenebisdithiocarbamic acid and its salts.

(C, T)

K125

Filtration, evaporation, and centrifugation solids from the production of ethylenebisdithiocarbamic acid and its salts.

(T)

K126

Baghouse dust and floor sweepings in milling and packaging operations from the production or formulation of ethylenebisdithiocarbamic acid and its salts.

(T)

K131

Wastewater from the reactor and spent sulfuric acid from the acid dryer from the production of methyl bromide.

(C,T)

K132

Spent absorbent and wastewater separator solids from the production of methyl bromide.

(T)

Explosives:

K044

Wastewater treatment sludges from the manufacturing and processing of explosives.

(R)

K045

Spent carbon from the treatment of wastewater containing explosives.

(R)

K046

Wastewater treatment sludges from the manufacturing, formulation and loading of lead-based initiating compounds.

(T)

K047

Pink/red water from TNT operations.

(R)

Petroleum refining:

K048

Dissolved air flotation (DAF) float from the petroleum refining industry.

(T)

K049

Slop oil emulsion solids from the petroleum refining industry.

(T)

K050

Heat exchanger bundle cleaning sludge from the petroleum refining industry.

(T)

K051

API separator sludge from the petroleum refining industry.

(T)

K052

Tank bottoms (leaded) from the petroleum refining industry.

(T)

K169

Crude oil storage tank sediment from petroleum refining operations

(T)

K170

Clarified slurry oil tank sediment and/or in-line filter/separation solids from petroleum refining operations.

(T)

K171

Spent Hydrotreating catalyst from petroleum refining operations, including guard beds used to desulfurize feeds to other catalytic reactors (this listing does not include inert support media).

(I,T)

K172

Spent Hydrorefining catalyst from petroleum refining operations, including guard beds used to desulfurize feeds to other catalytic reactors (this listing does not include inert support media).

(I,T)

Iron and steel:

K061

Emission control dust/sludge from the primary production of steel in electric furnaces.

(T)

K062

Spent pickle liquor generated by steel finishing operations of facilities within the iron and steel industry (SIC Codes 331 and 332).

(C,T)

Primary aluminum:

K088

Spent potliners from primary aluminum reduction.

(T)

Secondary lead:

K069

Emission control dust/sludge from secondary lead smelting. (Note: This listing is stayed administratively for sludge generated from secondary acid scrubber systems. The stay will remain in effect until further administrative action is taken. If EPA takes further action affecting this stay, the Hazardous Waste Commission will publish a notice of the action in the Colorado Register).

(T)

K100

Waste leaching solution from acid leaching of emission control dust/sludge from secondary lead smelting.

(T)

Veterinary pharmaceuticals:

K084

Wastewater treatment sludges generated during the production of veterinary pharmaceuticals from arsenic or organo-arsenic compounds.

(T)

K101

Distillation tar residues from the distillation of aniline-based compounds in the production of veterinary pharmaceuticals from arsenic or organo-arsenic compounds.

(T)

K102

Residue from the use of activated carbon for decolorization in the production of veterinary pharmaceuticals from arsenic or organo-arsenic compounds.

(T)

Ink formulation:

K086

Solvent washes and sludges, caustic washes and sludges, or water washes and sludges from cleaning tubs and equipment used in the formulation of ink from pigments, driers, soaps, and stabilizers containing chromium and lead.

(T)

Coking:

K060

Ammonia still lime sludge from coking operations.

(T)

K087

Decanter tank tar sludge from coking operations.

(T)

K141

Process residues from the recovery of coal tar, including, but not limited to, collecting sump residues from the production of coke from coal or the recovery of coke by-products produced from coal. This listing does not include K087 (decanter tank tar sludges from coking operations).

(T)

K142

Tar storage tank residues from the production of coke from coal or from the recovery of coke by-products produced from coal.

(T)

K143

Process residues from the recovery of light oil, including, but not limited to, those generated in stills, decanters, and wash oil recovery units from the recovery of coke by-products produced from coal.

(T)

K144

Wastewater sump residues from light oil refining, including, but not limited to, intercepting or contamination sump sludges from the recovery of coke by-products produced from coal.

(T)

K145

Residues from naphthalene collection and recovery operations from the recovery of coke by-products produced from coal.

(T)

K147

Tar storage tank residues from coal tar refining.

(T)

K148

Residues from coal tar distillation, including but not limited to, still bottoms.

(T)

Military Munitions:

K901

Waste chemical weapons using or containing any chemical compound identified in Appendix VII of Part 261 as the basis for this listing. Residues resulting from treatment of hazardous wastes with the codes P909, P910 and P911 are included in this listing.

(R),

(H), (T), (C), (E)

K902

Any soil, water, debris, or containers contaminated through contact with waste chemical weapons listed as K901 or hazardous wastes listed as P909, P910 or P911.

(R),

(H), (T), (C), (E)

K903

Hydrolysate: waste generated from the chemical neutralization of mustard agent by the addition of water and subsequent manipulation to a sustained and stable pH>10 to ensure destruction of sulfonium ions and TDG-mustard aggregates.

(T), (E)

(b) Listing Specific Definitions: (1) For the purposes of the K181 listing, dyes and/or pigments production is defined to include manufacture of the following product classes: dyes, pigments, or FDA certified colors that are classified as azo, triarylmethane, perylene or anthraquinone classes. Azo products include azo, monoazo, diazo, triazo, polyazo, azoic, benzidine, and pyrazolone products. Triarylmethane products include both triarylmethane and triphenylmethane products. Wastes that are not generated at a dyes and/or pigments manufacturing site, such as wastes from the offsite use, formulation, and packaging of dyes and/or pigments, are not included in the K181 listing.

(c) K181 Listing Levels. Nonwastewaters containing constituents in amounts equal to or exceeding the following levels during any calendar year are subject to the K181 listing, unless the conditions in the K181 listing are met.

Constituent

Chemical Abstracts No.

Mass levels (kg/yr)

Aniline

62-53-3

9,300

o-Anisidine

90-04-0

110

4-Chloroaniline

106-47-8

4,800

p-Cresidine

120-71-8

660

2,4-Dimethylaniline

95-68-1

100

1,2-Phenylenediamine

95-54-5

710

1,3-Phenylenediamine

108-45-2

1,200

(d) Procedures for demonstrating that dyes and/or pigment nonwastewaters are not K181. The procedures described in paragraphs (d)(1)-(d)(3) and (d)(5) of this section establish when nonwastewaters from the production of dyes/pigments would not be hazardous (these procedures apply to wastes that are not disposed in landfill units or treated in combustion units as specified in paragraph (a) of this section). If the nonwastewaters are disposed in landfill units or treated in combustion units as described in paragraph (a) of this section, then the nonwastewaters are not hazardous. In order to demonstrate that it is meeting the landfill disposal or combustion conditions contained in the K181 listing description, the generator must maintain documentation as described in paragraph (d)(4) of this section.

(1) Determination based on no K181 constituents. Generators that have knowledge (e.g., knowledge of constituents in wastes based on prior sampling and analysis data and/or information about raw materials used, production processes used, and reaction and degradation products formed) that their wastes contain none of the K181 constituents (see paragraph (c) of this section) can use their knowledge to determine that their waste is not K181. The generator must document the basis for all such determinations on an annual basis and keep each annual documentation for three years.

(2) Determination for generated quantities of 1,000 MT/yr or less for wastes that contain K181 constituents. If the total annual quantity of dyes and/or pigment nonwastewaters generated is 1,000 metric tons or less, the generator can use knowledge of the wastes (e.g., knowledge of constituents in wastes based on prior analytical data and/or information about raw materials used, production processes used, and reaction and degradation products formed) to conclude that annual mass loadings for the K181 constituents are below the listing levels of paragraph (c) of this section. To make this determination, the generator must:
(i) Each year document the basis for determining that the annual quantity of nonwastewaters expected to be generated will be less than 1,000 metric tons.

(ii) Track the actual quantity of nonwastewaters generated from January 1 through December 31 of each year. If, at any time within the year, the actual waste quantity exceeds 1,000 metric tons, the generator must comply with the requirements of paragraph (d)(3) of this section for the remainder of the year.

(iii) Keep a running total of the K181 constituent mass loadings over the course of the calendar year.

(iv) Keep the following records on site for the three most recent calendar years in which the hazardous waste determinations are made:
(A) The quantity of dyes and/or pigment nonwastewaters generated.

(B) The relevant process information used.

(C) The calculations performed to determine annual total mass loadings for each K181 constituent in the nonwastewaters during the year.

(3) Determination for generated quantities greater than 1,000 MT/yr for wastes that contain K181 constituents. If the total annual quantity of dyes and/or pigment nonwastewaters generated is greater than 1,000 metric tons, the generator must perform all of the steps described in paragraphs ((d)(3)(i)-(d)(3)(xi) of this section) in order to make a determination that its waste is not K181.
(i) Determine which K181 constituents (see paragraph (c) of this section) are reasonably expected to be present in the wastes based on knowledge of the wastes (e.g., based on prior sampling and analysis data and/or information about raw materials used, production processes used, and reaction and degradation products formed).

(ii) If 1,2-phenylenediamine is present in the wastes, the generator can use either knowledge or sampling and analysis procedures to determine the level of this constituent in the wastes. For determinations based on use of knowledge, the generator must comply with the procedures for using knowledge described in paragraph (d)(2) of this section and keep the records described in paragraph (d)(2)(iv) of this section. For determinations based on sampling and analysis, the generator must comply with the sampling and analysis and recordkeeping requirements described below in this section.

(iii) Develop a waste sampling and analysis plan (or modify an existing plan) to collect and analyze representative waste samples for the K181 constituents reasonably expected to be present in the wastes. At a minimum, the plan must include:
(A) A discussion of the number of samples needed to characterize the wastes fully;

(B) The planned sample collection method to obtain representative waste samples;

(C) A discussion of how the sampling plan accounts for potential temporal and spatial variability of the wastes.

(D) A detailed description of the test methods to be used, including sample preparation, clean up (if necessary), and determinative methods.

(iv) Collect and analyze samples in accordance with the waste sampling and analysis plan.
(A) The sampling and analysis must be unbiased, precise, and representative of the wastes.

(B) The analytical measurements must be sufficiently sensitive, accurate and precise to support any claim that the constituent mass loadings are below the listing levels of paragraph (c) of this section.

(v) Record the analytical results.

(vi) Record the waste quantity represented by the sampling and analysis results.

(vii) Calculate constituent-specific mass loadings (product of concentrations and waste quantity).

(viii) Keep a running total of the K181 constituent mass loadings over the course of the calendar year.

(ix) Determine whether the mass of any of the K181 constituents listed in paragraph (c) of this section generated between January 1 and December 31 of any year is below the K181 listing levels.

(x) Keep the following records on site for the three most recent calendar years in which the hazardous waste determinations are made:
(A) The sampling and analysis plan.

(B) The sampling and analysis results (including QA/QC data)

(C) The quantity of dyes and/or pigment nonwastewaters generated.

(D) The calculations performed to determine annual mass loadings.

(xi) Nonhazardous waste determinations must be conducted annually to verify that the wastes remain nonhazardous.
(A) The annual testing requirements are suspended after three consecutive successful annual demonstrations that the wastes are nonhazardous. The generator can then use knowledge of the wastes to support subsequent annual determinations.

(B) The annual testing requirements are reinstated if the manufacturing or waste treatment processes generating the wastes are significantly altered, resulting in an increase of the potential for the wastes to exceed the listing levels.

(C) If the annual testing requirements are suspended, the generator must keep records of the process knowledge information used to support a nonhazardous determination. If testing is reinstated, a description of the process change must be retained.

(4) Recordkeeping for the landfill disposal and combustion exemptions. For the purposes of meeting the landfill disposal and combustion condition set out in the K181 listing description, the generator must maintain on site for three years documentation demonstrating that each shipment of waste was received by a landfill unit that is subject to or meets the landfill design standards set out in the listing description, or was treated in combustion units as specified in the listing description.

(5) Waste holding and handling. During the interim period, from the point of generation to completion of the hazardous waste determination, the generator is responsible for storing the wastes appropriately. If the wastes are determined to be hazardous and the generator has not complied with the subtitle C requirements during the interim period, the generator could be subject to an enforcement action for improper management.

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