US lawDistrict of ColumbiaRegulationsTitle 20 โ ENVIRONMENTChapter 20-42 โ HAZARDOUS WASTE MANAGEMENT - STANDARDS FOR THE MANAGEMENT OF HAZARDOUS WASTE AND USED OIL423120 DCMR 42314231. RESERVEDLast amended: 2005Length: 13 wordsOfficial source Cite as D.C. Mun. Regs. tit. 20, ยง 42314231 RESERVED SOURCE: Final Rulemaking published at 52 DCR 9653 (October 28, 2005).Previous20 DCMR 4230Next20 DCMR 4232