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Chief Counsel Interpretations
The Pipeline and Hazardous Materials Safety Administration, Office of the Chief Counsel, also provides informal and formal written interpretations of the Hazardous Materials Regulations (HMR; 49 CFR Parts 100-185). Formal interpretations are in the form of Federal Register publications and are listed below. Informal interpretations, also listed below, are included in the Hazardous Materials Interpretations searchable database and can be identified by "CHI" in the PHMSA ID field. Examples of the application of the HMR can also be found in Appeal Decisions.
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Formal Interpretations Issued by the Office of the Chief Counsel
Formal interpretations are in the form of Federal Register publications. These interpretations are coordinated with other DOT modal administrations and are published to facilitate better public understanding and awareness of the HMR.
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June 4, 1998 |
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63 FR 30411; Federal Register 49 CFR Parts 107, 171-177 |
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Informal Interpretations Issued by the Office of the Chief Counsel
| PHMSA ID |
Date |
Company (or Individual) |
Regulation References |
| CHI-04-004 |
May 26, 2004 |
Science Applications International Corporation
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107.606
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| CHI-04-003 |
May 18, 2004 |
Rhode Island Trucking Association, Inc.
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177.8
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| CHI-04-002 |
Mar 8, 2004 |
Agricultural Retailers Association
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172.802
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| CHI-04-001 |
Feb 19, 2004 |
Agricultural Retailers Association
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172.802
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| CHI-01-002 |
May 29, 2001 |
International Warehouse Logistics Association
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107.1
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| CHI-01-001 |
Jan 24, 2001 |
Richard N. Siani and Michael K. Law
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107.1
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| CHI-00-003 |
Dec 5, 2000 |
Menominee Indian Tribe of Wisconsin
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173.15
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| CHI-00-002 |
Aug 24, 2000 |
Paragon Astronautics
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49 USC 5102
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| CHI-00-001 |
May 22, 2000 |
Washington Metropolitan Area Transit Authority
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107.1, 107.606
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| CHI-99-001 |
Aug 12, 1999 |
University of Colorado
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171.800
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| CHI-99-002 |
Apr 13, 1999 |
Menominee Indian Tribe of Wisconsin (see December 5, 2000 correction)
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173.242
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| CHI-98-001 |
Apr 10, 1998 |
Southern California Edison
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107.201
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| CHI-97-005 |
Dec 12, 1997 |
U.S. Department of Energy
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49 USC 5101
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| CHI-97-003 |
Aug 19, 1997 |
Lockheed Martin Energy Systems, Inc.
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49 USC 5101
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| CHI-97-002 |
Jun 13, 1997 |
City of Fort Worth, TX
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171.8, 171.1, 177.823
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| CHI-96-002 |
Jun 27, 1996 |
City of Fairbanks, AK
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174.14
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| CHI-96-001 |
Mar 7, 1996 |
Digital Audio Disc Corporation
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174.14, 105.5
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| CHI-94-005 |
Sep 26, 1994 |
California Environmental Projection Agency
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49 USC 5102
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| CHI-94-004 |
Jun 2, 1994 |
Nebraska Public Power District
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49 USC 5102
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| CHI-94-003 |
Apr 19, 1994 |
California Department of Justice
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49 USC 5102
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| CHI-94-002 |
Apr 18, 1994 |
Bechtel Petroleum Operations, Inc.
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171.1
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| CHI-91-002 |
Dec 5, 1991 |
U.S. Department of Energy
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107.1
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| CHI-91-001 |
Apr 23, 1991 |
U.S. Department of Energy
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107.1
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| CHI-89-001 |
Apr 14, 1989 |
National Tank Truck Carriers, Inc.
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172.3, 171.2, 173.22, 171.3
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| CHI-98-001 |
May 16, 1988 |
National Tank Truck Carriers, Inc.
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172.3, 171.2, 173.22, 171.3
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| CHI-87-003 |
Mar 2, 1987 |
Lawrence W. Bierlein, P.C.
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173.301
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| CHI-87-001 |
Feb 2, 1987 |
Illinois Department of Transportation
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172.504, 172.505
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