[Code of Federal Regulations] [Title 40, Volume 24] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR264.199] [Page 324] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 264_STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES--Table of Contents Subpart J_Tank Systems Sec. 264.199 Special requirements for incompatible wastes. (a) Incompatible wastes, or incompatible wastes and materials, must not be placed in the same tank system, unless Sec. 264.17(b) is complied with. (b) Hazardous waste must not be placed in a tank system that has not been decontaminated and that previously held an incompatible waste or material, unless Sec. 264.17(b) is complied with.