StacksVerified U.S. regulatory reference

40 CFR §265.229

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Ignitable or reactive waste must not be placed in a surface impoundment, unless the waste and impoundment satisfy all applicable requirements of 40 CFR part 268, and:
  1. (a)The waste is treated, rendered, or mixed before or immediately after placement in the impoundment so that:
    1. (1)The resulting waste, mixture, or dissolution of material no longer meets the definition of ignitable or reactive waste under § 261.21 or § 261.23 of this chapter; and
    2. (2)Section 265.17(b) is complied with; or
  2. (b)
    1. (1)The waste is managed in such a way that it is protected from any material or conditions which may cause it to ignite or react; and
    2. (2)The owner or operator obtains a certification from a qualified chemist or engineer that, to the best of his knowledge and opinion, the design features or operating plans of the facility will prevent ignition or reaction; and
    3. (3)The certification and the basis for it are maintained at the facility; or
  3. (c)The surface impoundment is used solely for emergencies.