(a) Except as provided in this section, the storage of hazardous wastes restricted from land disposal under subpart C of this part of RCRA section 3004 is prohibited, unless the following conditions are met:

(1) A generator stores such wastes in tanks, containers, or containment buildings on-site solely for the purpose of the accumulation of such quantities of hazardous waste as necessary to facilitate proper recovery, treatment, or disposal and the generator complies with the requirements in §§ 262.16 and 262.17 and parts 264 and 265 of this chapter.

(2) An owner/operator of a hazardous waste treatment, storage, or disposal facility stores such wastes in tanks, containers, or containment buildings solely for the purpose of the accumulation of such quantities of hazardous waste as necessary to facilitate proper recovery, treatment, or disposal and:

(i) Each container is clearly marked to identify its contents and with:

(A) The words “Hazardous Waste”;

(B) The applicable EPA hazardous waste number(s) (EPA hazardous waste codes) in subparts C and D of part 261 of this chapter; or use a nationally recognized electronic system, such as bar coding, to identify the EPA hazardous waste number(s);

(C) An indication of the hazards of the contents (examples include, but are not limited to, the applicable hazardous waste characteristic(s) (i.e., ignitable, corrosive, reactive, toxic); hazard communication consistent with the Department of Transportation requirements at 49 CFR part 172 subpart E (labeling) or subpart F (placarding); a hazard statement or pictogram consistent with the Occupational Safety and Health Administration Hazard Communication Standard at 29 CFR 1910.1200; or a chemical hazard label consistent with the National Fire Protection Association code 704); and

(D) The date each period of accumulation begins.

(ii) Each tank is clearly marked with a description of its contents, the quantity of each hazardous waste received, and the date each period of accumulation begins, or such information for each tank is recorded and maintained in the operating record at that facility. Regardless of whether the tank itself is marked, an owner/operator must comply with the operating record requirements specified in § 264.73 or § 265.73.

(3) A transporter stores manifested shipments of such wastes at a transfer facility for 10 days or less.

(4) A healthcare facility accumulates such wastes in containers on site solely for the purpose of the accumulation of such quantities of hazardous waste pharmaceuticals as necessary to facilitate proper recovery, treatment, or disposal and the healthcare facility complies with the applicable requirements in §§ 266.502 and 266.503 of this chapter.

(5) A reverse distributor accumulates such wastes in containers on site solely for the purpose of the accumulation of such quantities of hazardous waste pharmaceuticals as necessary to facilitate proper recovery, treatment, or disposal and the reverse distributor complies with § 266.510 of this chapter.

(b) An owner/operator of a treatment, storage or disposal facility may store such wastes for up to one year unless the Agency can demonstrate that such storage was not solely for the purpose of accumulation of such quantities of hazardous waste as are necessary to facilitate proper recovery, treatment, or disposal.

(c) An owner/operator of a treatment, storage or disposal facility may store such wastes beyond one year; however, the owner/operator bears the burden of proving that such storage was solely for the purpose of accumulation of such quantities of hazardous waste as are necessary to facilitate proper recovery, treatment, or disposal.

(d) If a generator's waste is exempt from a prohibition on the type of land disposal utilized for the waste (for example, because of an approved case-by-case extension under § 268.5, an approved § 268.6 petition, or a national capacity variance under subpart C), the prohibition in paragraph (a) of this section does not apply during the period of such exemption.

(e) The prohibition in paragraph (a) of this section does not apply to hazardous wastes that meet the treatment standards specified under §§ 268.41, 268.42, and 268.43 or the treatment standards specified under the variance in § 268.44, or, where treatment standards have not been specified, is in compliance with the applicable prohibitions specified in § 268.32 or RCRA section 3004.

(f) Liquid hazardous wastes containing polychlorinated biphenyls (PCBs) at concentrations greater than or equal to 50 ppm must be stored at a facility that meets the requirements of 40 CFR 761.65(b) and must be removed from storage and treated or disposed as required by this part within one year of the date when such wastes are first placed into storage. The provisions of paragraph (c) of this section do not apply to such PCB wastes prohibited under § 268.32 of this part.

(g) The prohibition and requirements in this section do not apply to hazardous remediation wastes stored in a staging pile approved pursuant to § 264.554 of this chapter.

[51 FR 40642, Nov. 7, 1986; 52 FR 21017, June 4, 1987, as amended at 52 FR 25791, July 8, 1987; 54 FR 36972, Sept. 6, 1989; 57 FR 37281, Aug. 18, 1992; 63 FR 65940, Nov. 30, 1998; 71 FR 40279, July 14, 2006; 81 FR 85828, Nov. 28, 2016; 84 FR 5950, Feb. 22, 2019]

In determining the concentration of HOCs in a hazardous waste for purposes of the § 268.32 land disposal prohibition, EPA has defined the HOCs that must be included in a calculation as any compounds having a carbon-halogen bond which are listed in this Appendix (see § 268.2). Appendix III to Part 268 consists of the following compounds:

I. Volatiles 1. Bromodichloromethane 2. Bromomethane 3. Carbon Tetrachloride 4. Chlorobenzene 5. 2-Chloro-1,3-butadiene 6. Chlorodibromomethane 7. Chloroethane 8. 2-Chloroethyl vinyl ether 9. Chloroform 10. Chloromethane 11. 3-Chloropropene 12. 1,2-Dibromo-3-chloropropane 13. 1,2-Dibromomethane 14. Dibromomethane 15. Trans-1,4-Dichloro-2—butene 16. Dichlorodifluoromethane 17. 1,1-Dichloroethane 18. 1,2-Dichloroethane 19. 1,1-Dichloroethylene 20. Trans-1,2-Dichloroethene 21. 1,2-Dichloropropane 22. Trans-1,3-Dichloropropene 23. cis-1,3-Dichloropropene 24. Iodomethane 25. Methylene chloride 26. 1,1,1,2-Tetrachloroethane 27. 1,1,2,2-Tetrachloroethane 28. Tetrachloroethene 29. Tribromomethane 30. 1,1,1-Trichloroethane 31. 1,1,2-Trichloroethane 32. Trichlorothene 33. Trichloromonofluoromethane 34. 1,2,3-Thrichloropropane 35. Vinyl Chloride II. Semivolatiles 1. Bis(2-chloroethoxy)ethane 2. Bis(2-chloroethyl)ether 3. Bis(2-chloroisopropyl)ether 4. p-Chloroaniline 5. Chlorobenzilate 6. p-Chloro-m-cresol 7. 2-Chloronaphthalene 8. 2-Chlorphenol 9. 3-Chloropropionitrile 10. m-Dichlorobenzene 11. o-Dichlorobenzene 12. p-Dichlorobenzene 13. 3.3′-Dichlorobenzidine 14. 2,4-Dichlorophenol 15. 2,6-Dichlorophenol 16. Hexachlorobenzene 17. Hexachlorobutadiene 18. Hexachlorocyclopentadiene 19. Hexachloroethane 20. Hexachloroprophene 21. Hexachlorpropene 22. 4,4′-Methylenebis(2-chloroanaline) 23. Pentachlorobenzene 24. Pentachloroethane 25. Pentachloronitrobenzene 26. Pentachlorophenol 27. Pronamide 28. 1,2,4,5-Tetrachlorobenzene 29. 2,3,4,6-Tetrachlorophenol 30. 1,2,4-Trichlorobenzene 31. 2,4,5-Trichlorophenol 32. 2,4,6-Trichlorophenol 33. Tris(2,3-dibromopropyl)phosphate III. Organochlorine Pesticides 1. Aldrin 2. alpha-BHC 3. beta-BHC 4. delta-BHC 5. gamma-BHC 6. Chlorodane 7. DDD 8. DDE 9. DDT 10. Dieldrin 11. Endosulfan I 12. Endosulfan II 13. Endrin 14. Endrin aldehyde 15. Heptachlor 16. Heptachlor epoxide 17. Isodrin 18. Kepone 19. Methoxyclor 20. Toxaphene IV. Phenoxyacetic Acid Herbicides 1. 2,4-Dichlorophenoxyacetic acid 2. Silvex 3. 2,4,5-T V. PCBs 1. Aroclor 1016 2. Aroclor 1221 3. Aroclor 1232 4. Aroclor 1242 5. Aroclor 1248 6. Aroclor 1254 7. Aroclor 1260 8. PCBs not otherwise specified VI. Dioxins and Furans 1. Hexachlorodibenzo-p-dioxins 2. Hexachlorodibenzofuran 3. Pentachlorodibenzo-p-dioxins 4. Pentachlorodibenzofuran 5. Tetrachlorodibenzo-p-dioxins 6. Tetrachlorodibenzofuran 7. 2,3,7,8-Tetrachlorodibenzo-p-dioxin [65 FR 81380, Dec. 26, 2000]

Hazardous waste with the following EPA Hazardous Waste Codes may not be placed in lab packs under the alternative lab pack treatment standards of § 268.42(c): D009, F019, K003, K004, K005, K006, K062, K071, K100, K106, P010, P011, P012, P076, P078, U134, U151.

[59 FR 48107 Sept. 19, 1994]

The treatment standard for many characteristic wastes is stated in the § 268.40 Table of Treatment Standards as “Deactivation and meet UTS.” EPA has determined that many technologies, when used alone or in combination, can achieve the deactivation portion of the treatment standard. Characteristic wastes that are not managed in a facility regulated by the Clean Water Act (CWA) or in a CWA-equivalent facility, and that also contain underlying hazardous constituents (see § 268.2(i)) must be treated not only by a “deactivating” technology to remove the characteristic, but also to achieve the universal treatment standards (UTS) for underlying hazardous constituents. The following appendix presents a partial list of technologies, utilizing the five letter technology codes established in 40 CFR 268.42 Table 1, that may be useful in meeting the treatment standard. Use of these specific technologies is not mandatory and does not preclude direct reuse, recovery, and/or the use of other pretreatment technologies, provided deactivation is achieved and underlying hazardous constituents are treated to achieve the UTS.

[55 FR 22714, June 1, 1990, as amended at 62 FR 26025, May 12, 1997]

[62 FR 26025, May 12, 1997, as amended at 63 FR 28751, May 26, 1998; 65 FR 36367, June 8, 2000; 71 FR 40279, July 14, 2006; 75 FR 78926, Dec. 17, 2010]

[62 FR 26037, May 12, 1997, as amended at 63 FR 28752, May 26, 1998; 71 FR 40279, July 14, 2006]

[61 FR 15658, Apr. 8, 1996]