Acutely and Extremely Hazardous Wastes

Acutely and extremely hazardous wastes are wastes that would cause death, disabling personal injury, or serious illness. These wastes are more hazardous than ordinary hazardous wastes.

Acutely hazardous wastes are listed as “P” wastes in the federal system. The main difference between P listed wastes and other federally regulated hazardous wastes is the criterion used to identify acutely hazardous chemicals. The criteria:

  • Separates highly toxic (acutely hazardous) waste from other toxic wastes (U listed wastes)
  • Establishes the management method for containers that held P listed wastes

In the California, we have identified extremely hazardous wastes with an asterisk in Appendix X. Identifying whether a hazardous waste is an extremely hazardous waste has a bearing on authorization under the tiered permitting system. A hazardous waste is extremely hazardous based on the following criteria:

Substance

TTLC (Wet Weight in mg/kg)

Aldrin

140

Arsenic and/or arsenic compounds

50,000 (as As)

Beryllium and/or beryllium compounds

7,500 (as Be)

Cadmium and/or cadmium compounds

10,000 (as Cd)

Chlordane

250

2,4-Dichlorophenoxyacetic acid

10.000

Dieldren

800

Dioxin (2,3,7,8-TCDD)

1

Endrin

20

Heptachlor

470

Kepone

2,100

Lead, organic

1,300 (dry weight basis; as Pb)

Lindane

400

Mercury and/or mercury compounds

2,000 (as Hg)

Mirex

2,100

Polychlorinated biphenyls (PCBs)

5,000

Selenium and/or selenium compounds

10,000 (as Se)

Thallium and/or thallium compounds

70,000 (as Tl)

Toxaphene

500

2,4,5-Trichlorophenoxypropionic acid

1,000

Title 22 CCR 66261.110 and 66261.113
Title 22 CCR 66261.110(a)(1)
Title 22 CCR 66261.110(a)(2)
Title 22 CCR 66261.110(a)(3)
Title 22 CCR 66261.110(a)(4)
Title 22 CCR 66261.110(a)(5)
Title 22 CCR 66261.110(a)(6)
Title 22 CCR 66261.113