The Dow Chemical Company — Hazardous Materials Safety Interpretation

Page 1• / ATG SYMBOL INITULSISO IAN 56X ATG STUBOT Mr. Hugh Taylor The Dow Chemical Company Regulatory Specialist RTG SYNBOL Midland, MI 48674 Dear Mr. Taylor: DATE This is in response to your letter dated November 5, 1997, regarding residues of Class 9 ATG SYMBOL hazardous substances under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171- 180). Specifically, you ask whether tank cars and cargo tanks that contain residues of Class 9 INITULSISIO hazardous substances may be returned from the consignee without removing the ID number DATE marking and/or the placards. ATG SYMBOL The answer is yes. The HMR do not require removal of the identification markings and/or PITULSISIG placards when a package has a residue of a Class 9 hazardous substance. However, the shipping paper should be consistent with the transport vehicle's hazard communications by DATE prefacing the shipping description with "RESIDUE Last Contained ***" as provided by § 172.203(e)(1). However, markings or placards may be removed when the Class 9 ATG SYUBOL hazardous substance residue is below its reportable quantity. No shipping paper is nécessary *X*x if placards and markings are removed. ANTULSISO DATE I hope this information is helpful. If we can be of further assistance, please do not hesitate to contact us. ATO SYMBOL Sincerely, MITMSISO 15/ D1573x ATO SYMBOI Delmer F. Billings Chief, Regulations Development BITALSO Office of Hazardous Materials Standards % 13-23 George:DHM-11:68553:12/19/97:at File: 172.303 172.512(3)(c) SC: 230, 355 177.203 98-0513 Form DOT F 13208S (Ror. 5183) OFFICIAL FILE COPY#