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Section §171.1: Applicability of Hazardous Materials Regulations (HMR) to persons and functions

Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.

A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response.

Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View section 171.1 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
22-0038 Daniels Training Services, Inc. Daniel Stoehr View
24-0011 Ohio Public Commission Tom Forbes View
23-0033 Sensors, Inc. Mr. Doug Heisler View
23-0006 Sea Lamprey Control Centre Mr. Paul Kyostia View
22-0062 Larson Berg & Perkins PLLC James A. Perkins View
22-0064 Total Compliance, LLC Chris Heminger View
22-0086 Fujitrans USA Inc. Laura Warren View
22-0010 CryoLogistics Refrigeration Technologies Ltd. Rodger Talstra View
22-0053 Alston & Bird Meaghan G. Boyd View
22-0003 Ordnance Lab LLC Sean Lindley View
21-0085 Healthcare Waste Institute Darrel K. Smith View
21-0078 Remora Carbon Christina Reynolds View
21-0049 Wisconsin State Patrol Christopher Caldwell View
21-0028 McCallum Rock Drilling Darren Amman View
19-0136 National Propane Gas Association Sarah Reboli View
20-0067 Linde Gas N.A., LLC Kevin Funk View
20-0026 STAR Consulting Jeff R. Thomas View
19-0117 Railway Supply Institute (RSI) Mr. E. Michael O'Malley View
19-0017 John Christopher View
19-0069 HQ U.S. Army Europe Safety (AECS-S) Mr.Donald Paglioni View
19-0069 HQ U.S. Army Europe Safety (AECS-S) Donald V. Paglioni View
19-0029 Holland & Knight, LLP Steven Gordon View
18-0152 Regulatory Resources Inc. Wade Winters View
18-0110 Ascent Resources Utica, LLC Steven Parrish View
16-0134 Boston University Medical Campus Mr. Michael P. Walen Jr, MS, CHP View
18-0071 United States Department of Agriculture Dr. Jack Shere View
18-0001 Washington State Ferries Manny Perez View
17-0115 C.H.&I Technologies, Inc. Eric WIlliams View
17-0083 Gold Tank Inspection Service Inc. Aris Antoniou View
17-0069 The Ohio State University Mr. Mike Swick View
17-0055 Waste Management Sustainability Services Mr. Brian Biancavilla View
09-0281 FDSE, Inc. Mr. Matjaz Zakotnik View
11-0040 U.S. Department of Energy Office of Packaging and Transportation Mr. James M. Shuler Manag View
CHI-02-001 J.H. Walker Trucking Mr. Kevin P. Mullen View
14-0036 Department of Ecology Mr. Gerald French View
11-0029 Department of the Army Mr. Daniel A. Maham View
12-0237 Total Petrochemicals & Refining USA, Inc. Ms. Karen Scheel View
99-0225 HAZMATEAM, INC. Mr. Leo Traverse View
98-0244 National Propane Gas Association Mr. W. H. Butterbaugh View
CHI-09-0089 Bob Craig View
10-0217 Mr. Daniel J. VenRoy View
06-0146 State of New Jersey Department of Environmental Protection Ms. Robert Gomez View
13-0144 Mr. Lucien DiMeo View
09-0089 Mr. Bob Craig View
03-0151 Dominion Generation Mr. Doug Noce View
14-0021 Lufthansa Cargo the Americas Mr. Hilmar Leng View
09-0289 Lincoln-Lancaster County Health Department City of Lincoln Nebraska Mr. Daniel N. King View
07-0092 Florida Power and Light Co. Mr. Frank Nesbihal, CHMM View
99-0053 Javelin Maintenance Support Center Mr. Bunker Hill View
99-0095 Mr. Mark Kloppel View
98-0327 General Electric Company Dr. Jim Merrifield View
14-0155 Communication Center Mr. Ed Gruber View
98-0302 Peerless Coatings, Inc. Mr. Ronnie Screws View
00-0146 Quality King Distributors, Inc. Mr. Ron Mihalek View
06-0113 RBC Dam Rauscher Mr.. Jay Jensen  View
98-0380 City of Tulsa Mr. Richard Bingham View
08-0233 Mr. Guttemberg Costa Botejo View
01-0313 IT Corporation Mr. Lee R. Wilmot View
14-0064 NitroxFox LLC Mr. John Fox View
CHI-07-002 Minnesota Department of Transportation Mr. Michael Ritchie View
00-0081 HAZMATEAM, Inc. Mr. Leo Traverse View
11-0001 NYC-DEP Mr. Mohamed Abdel Aal View
10-0176 The Chlorine Institute, Inc. Ms. Robyn Heald View
08-0226 DtLwKdo USA/CAN S4 Rüdiger Peil View
12-0030 U.S. Department of Defense, Attn: AMSSD-SA Mr. Elias V. Cantu View
99-0158 Premedica Corporation Mr. Joseph K. Arsenault View
15-0207 Department of Army Mr. Marco Boasso View
05-0242 Mr. Thomas L. Kettler View
08-0136 German Airforce FTC Mr. Egon Weyel View
12-0240 Department of Energy Mr. Stephen C. O'Connor View
99-0103 Department of the Army Mr. Thomas S. Smith View
13-0160 The Boeing Company Mr. Paul Burroughs View
11-0009 American Expedition Vehicles Mr. David Harriton View
10-0206 Iowa Renewable Fuels Association Mr. Monte Shaw View
10-0112 Micro Scientific Industries, Inc. Mr. Jack Wagner View
05-0024 3rd Combat Communications Group (ACC) Shawntez L. Brooks, 2nd Lieutenant View
CHI-11-003 NASA Joe Torsani View
03-0167 McCarthy, Sweeney & Harkaway, P.C. Mr. Lawrence W. Bierlein View
16-0034 Texas Machine Gun & Ordnance Mr. Sean Lindley View
12-0169 LANXESS Corporation Ms. Cyndi Fink View
05-0290 Galls/Aramark Inc. Mr. Carl Jackson View
00-0041 Household Hazardous Waste Management Program Mr. Robert Fiederlein View
08-0057 Jacksonville Port Authority (Jaxport) Mr. Mike Becker View
10-0188 American Veterinary Medical Association Ms. Kristi Henderson View
06-0273 Piedmont Plastics, Inc. Mr. Dale Austin View
10-0251 PBI Technology, Inc. Mr. Paul Bess View
00-0197 Barlen and Associates, Inc. Mr. William Barlen View
03-0172 Ondeo Nalco Company Ms. Anita S. Knight View
CHI-14-0036 Washington State Department of Ecology Gerald French View
03-0007 Refrigeration Supplies Distributor Mr. Neill Boutilier View
14-0212 Product Regulatory Services Mr. Robert Miller View
00-0042 Public Works Department Mr. Dave Vail View
99-0009 New York State Department of Environmental Conservation Alan G. Woodard, PhD View
10-0212 Thunderbird Cylinder, Inc. Mr. Fred Nachman View
98-0285 5th Ohio Light Artillery, Ltd. Mr. Robert R. Chaney, PE View
10-0257 Thompson Hine LLP Mr. Jason Tutrone View
99-0073 Department of the Air Force SMSGT Timothy W. Stern, USAF View
98-0018 Amoco ChemicalsMs. Vickie M. Wheeler Ms. Vickie M. Wheeler View
08-0247 Henry Ford Hospital Ms. Carolie Horvath View
11-0182 Mr. Henry Wake Huffman View
14-0100 Gruene Environmental Companies Mr. Kitt Ferraz View
06-0096 KPA, LLC Mr. Brent J. Hoberg  View
15-0013 Pinnacle Propane Mr. Kyle Sparks View
10-0213 Thunderbird Cylinder, Inc Mr. Fred Nachman View
06-0088 Jacksonville Port Authority Mr. Michael Becker View
06-0049 Vinson & Elkins Thomas H. Wilson View
15-0066 Chesapeake Fire Department Mr. Simone J. Gulisano View
01-0199 State of Iowa Mr. John Wessel View
06-0128 Mr. Richard B. Loden View
00-0246 U.S. Consumer Product Safety Commission Mr. Patrick M. Race View
14-0101 University of New Mexico Mr. Andrew Buchan View
05-0075 SJC Compliance Education, Inc. Mr. Stephen Cansler View
09-0070 Thermo Fisher Scientific Mr. Gene Sanders View
16-0128 Cimarron Oil LLC Mr. Anthony Rausin View
08-0188 North Bay Enterprises, Inc. Mr. Achim K. Gartmann View
99-0197 Mr. Raymond K. Barwin View
00-0225 Dangerous Goods Program and Cargo Security William Wilkening View
98-0048 Lockheed Martin Government Mr. David A. Sutton View
08-0031 UT Southwestern Medical Center Dr. Frank H. Wians, Jr. View
99-0261 Greenebaum Doll & McDonald, PLLC Carolyn M. Brown, Esq. View
15-0065 SOLARIS Mr. Keane Lao View
02-0055 U.S. Department of Energy, Richland Operations Office Steven H. Wisness View
05-0150 OIC, Detachment ECHO Chief Warrant Officer Jeffery J. Zagurski View
03-0102 Palava Consulting Services Mr. Richard Palava View
07-0129 SESI Consulting Engineers Mr. John Nederfield View
99-0215 Mr. Chris Brown View
10-0108 Department of City Development City of Milwaukee Mr. Clyde Hamer View
99-0108 PATTON BOGGS LLP Ms. Carolina L. Mederos View
06-0135 Los Alamos National Laboratory Packaging and Transportation Mr. Joseph Lowery  View
01-0089 Mr. David C. DeLuca View
14-0113 Ms. Alisha Horst View
05-0026 AeroPro, Inc. Ms. Susan Foumier  View
12-0155 Scopelitis, Garvin, Light, Hanson & Fears Mr. Timothy W. Wiseman, Esq. & Mr. Jeffrey S. Jackson, Esq. View
99-0046 Mr. Mark R. Maki View
CHI-97-002 City of Fort Worth, TX Cynthia Garcia View
11-0197 Air Products & Chemicals, Inc. Mr. Joe DiGirolamo View
12-0227 IQ Products Company Mr. P. Yohanne Gupta View
98-0120 Amerigas Partners, L.P. Ms. Jean S. Konowalczyk View
08-0244 University of the Sciences in Philadelphia Ms. Renee Siegel View
14-0128 University of Minnesota Mr. Michael Maurer View
14-0118 University of New Mexico Mr. Andrew Buchan View
05-0045 Essex Aerospace and Defense Mr. Russell Zavadil View
CHI-15-0167 Bruce D. Green View
09-0143 Wiley Rein LLP Mr. George Kerchner View
12-0062 Duke Energy Corporation Mr. Charles (Chuck) S. Denny View
05-0050 Arkema Inc. Ms. Christina M. Kurtz View
09-0064 C & N Companies Mr. Jon Bjornstad View
07-0099 Mr. Christopher M. Bruce  View
05-0053 Space Gateway Support, LLC Mr. William Deneuté View
16-0028 New York State Department of Health Mr. Corey Bennett View
17-0022 Golder Associates, Inc. Mr. Benjamin Huron View
06-0225 City of Surprise, Water Services Department Ms. Christine Nunez View
04-0118 Department of the Army - TARDEC Mr. Ali Baziar View
09-0238 Mitsubishi International Corporation Ms. Lyn Russo View
14-0163 Dentons US LLP Mr. James W. Rubin View
05-0014 Mr. Richard Daley Borden Chemical, Inc. View
99-0250 Great Western Chemical Company Ms. Kimberly Henson View
CHI-10-004 ACCU CHEM Conversion, Inc. Phil Zlaket View
15-0106 Mr. Daniel Zirzow View
11-0306 Transportation Department Enforcement Division Mr. Carlisle Smith View
CHI-10-0239 Village of Itasca Nicole P. Aranas View
04-0092 New York Power Authority Mr. Mark K. Malone View
05-0143 County of Dane Mr. Mark Finarty View
CHI-92-001 Nuclear Regulatory Commission Martin G. Malsch View
04-0218 Mr. Walter J. Pociask View
11-0246 Defense Ammunition Center Mr. Jeff Stretton View
CHI-94-002 Bechtel Petroleum Operations, Inc. Steve Shire View
04-0260 J & R Brokerage, Inc. Mr. John F. Martin View
07-0116 Tatro Tekosky Sadwick LLP Mr. Steve R. Tekosky View
16-0010 Mr. Jason Miller View
04-0256 University of South Alabama Mr. David Wiik View
16-0208 Enoch Kever PLLC Mr. Rod Johnson View
11-0136 Recology San Francisco Mr. Billy Puk View
09-0030 Household Hazardous Waste Program Alameda County Mr. Bill Pollack View
CHI-95-003 Maryland Department of the Environment View
11-0140 Law Office of Seaton & Husk, L.P. Mr. Henry E. Seaton Esq. View
10-0085 Canadian Material Support Group Captain E.M. Steele View
03-0202 Mr. Steve Thinnes View
10-0089 Essex Cryogenics of Missouri, Inc. Mr. Ken Seise View
07-0005 Monticello Nuclear Generating Plant Timothy M. Gallagher View
12-0013R GeoDynamics Mr. Rick Chewning View
07-0007 Foley & Lardner, LLP Ms. Katherine E. Lazarski View
10-0048 Department of National Defence Captain E.M. Steele View
07-0008 U.S. Department of Energy Mr. Dennis Ashworth View
CHI-95-001 U.S. EPA View
03-0326 Kansas State University Mr. Mitch Ricketts, CSP View
16-0083 NGL Crude Logistics, LLC. Mr. Don Robinson View
02-0249 James H. Buchholz View
03-0049 Latham & Watkins LLP Mr. Kelly E. Richardson View
10-0018 Symmetricon Ms. Susan Durr View
05-0194 Mr. Allan McCallum View
00-0366 Department of the Army Mr. Steven G. LaPoint View
09-0037 Thermo Fisher Scientific Mr. Gene Sanders View
09-0060 FuelTool, LLC Mr. Michael McAvey View
10-0245 Air Transport International, L.L.C. Mr. Dave Bell View
10-0011 Mr. Michael Coletta View
04-0133 National Propane Gas Association Mr. Philip A. Squair View
00-0090 Transport Workers Union of America Mr. Bruce W. Graska, Sr. View
10-0069 Battelle National Biodefense Institute (BNBI) Ms. Jill C. Santacroce View
08-0268 University of Chicago Ms. Susan Grover View
05-0186 Minnesota Department of Transportation Mr. Michael Ritchi View
08-0160 Mr. John H. Hawn View