(a) In addition to the waste analyses required by Sec. 265.13, whenever a surface impoundment is to be used to:
(1) Chemically treat a hazardous waste which is substantially different from waste previously treated in that impoundment; or
(2) Chemically treat hazardous waste with a substantially different process than any previously used in that impoundment; the owner or operator must, before treating the different waste or using the different process:
(i) Conduct waste analyses and trial treatment tests (e.g., bench scale or pilot plant scale tests); or
(ii) Obtain written, documented information on similar treatment of similar waste under similar operating conditions; to show that this treatment will comply with Sec. 265.17(b). [Comment: As required by Sec. 265.13, the waste analysis plan must include analyses needed to comply with Secs. 265.229 and 265.230. As required by Sec. 265.73, the owner or operator must place the results from each waste analysis and trial test, or the documented information, in the operating record of the facility.]
(b) [Reserved]