{"operation":"document","citation":"12-0223","title":"Mr. John A Desharnais — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2012-10-19","effective_on":null,"summary":"12-0223 concerning 172.101.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0223.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0223.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0223","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2012/120223.pdf","body":"<<<PAGE 1>>>\n\nU.S. Department\nof Transportation\nPipeline and Hazardous\nMaterials Safety\nAdministration\n1200 New Jersey Avenue SE\nWast1ington. DC 20590\nOCT 1 9 2012\nMr. 1 ohn A Desharnais\n103 South St.\nTewksbury, MA 01876\nRef No.: 12-0223\nDear Mr. Desharnais:\nThis is a response to your August 25, 2012letter regarding the applicability of the\nHazardous Materials Regulations (HMR; 49 CPR Parts 100-185) to \"Carbon dioxide, solid\nor Dry ice, class 9, UN1845\" when transported by highway. Specifically, you note the\nsymbols \"A\" and \"W\" in column 1 of the Hazardous Materials table (HMT; § 172.101) for\n\"Carbon dioxide, solid or Dry ice, class 9, UN1845\" and ask if dry ice must comply with\nthe shipping paper requirements specified in§ 172.202 when transported by highway.\nThe answer to your question is no. As described in§§ 172.101 (b )(2) and (b)(6) an \"A\"\nsymbol in column 1 of the HMT denotes a material that is subject to the requirements of\nthis subchapter only when offered or intended for transportation by aircraft, unless the\nmaterial is a hazardous substance or a hazardous waste while a \"W\" symbol in column 1 of\nthe HMT denotes a material that is subject to the requirements of this subchapter only\nwhen offered or intended for transportation by vessel, unless the material is a hazardous\nsubstance or a hazardous waste. Therefore, unless the \"Carbon dioxide, solid or Dry ice,\nclass 9, UN1845\" is a hazardous substance or hazardous waste it is not subject to the HMR\nwhen transported by highway.\nI hope this information is helpful. If you have any more questions, please do not hesitate\nto contact this office.\nSincerely,\n7;6--d.Jbr-\nRobert Benedict\nChief, Standards Development\nStandards and Rulemaking Division\n\n<<<PAGE 2>>>\n\nJohn A Desharnais\n103 South St\nTewksbury, MA 01876\njohndeshamais@hotmail.com\n978-404-9196\n6u~hak\n~ 112.r JD I I\nApp) 1Ca fo,·l rl-~\nlZ-02Z'3\nMr. Charles Bates\nDirector, Standards and Rule Making Division\nUS DOT\n1200 New Jersey Avenue\nWashington DC 20590\nAugust 25, 2012\nDear Mr. Bates;\nI am a tractor trailer driver and am trying to obtain the correct classification for\ncarbon dioxide, solid or dry ice. I believe that this is a hazardous material and should be\nhandled as such when it come to the domestic transportation via tractor trailer.\nThis item is listed on the table of hazardous materials as a class 9 hazard, the\ntable also has an (A,W) listen in column 1. As I understand subpart B of regulation\n172.101 the presence of the A and W symbol in column 1 puts additional requirements on\nthe transportation of the item by air and on a vessel. As the symbols are being explained\nthere is a part of the explanation the states, \"unless the material is a hazardous substance\nor a hazardous waste.\nShould carbon dioxide, solid or dry ice UN 1845 comply with all hazardous\nmaterial regulations as it pertains to shipping papers and documentation.\nThank you for your assistance with this.\n~ectfully;\n\"-ut4 .. ~~\nJohn Desharnais","truncated":false,"body_characters":2969}