Section 267.175 - What special requirements must I meet for incompatible wastes?(a) You must not place incompatible wastes, or incompatible wastes and materials (see appendix V to 40 CFR part 264 for examples), in the same container, unless you comply with § 267.17(b) .(b) You must not place hazardous waste in an unwashed container that previously held an incompatible waste or material.(c) You must separate a storage container holding a hazardous waste that is incompatible with any waste or with other materials stored nearby in other containers, piles, open tanks, or surface impoundments from the other materials, or protect the containers by means of a dike, berm, wall, or other device.