# Horton, Knox, Carter, & Foote — Hazardous Materials Safety Interpretation

**Citation:** CHI-93-001  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1993-06-03

CHI-93-001 response to Horton, Knox, Carter, & Foote concerning 171.8.

## Document text

<<<PAGE 1>>>

US. Department
Office of the
of transpontation
Chiet Counsel
400 Sevenin Si Sw
Wasningion DC 20590
Research and
Speciai Progromis
Administration
JUN
3 1993
Ms. Jo Ann Willans
Office of Chief Counsel (GC-12)
U.s. Departuent of Energy
washington, D.C. 20585
Dear Ma. Willians:
On April 15, 1993, at a nesting attended by ropresentatives of
this office, the Federal Highway Adninistration, the Departuent
of Energy (DOI) and the University of California, ve discussed
the application of the Hazardous Materials Transportation Act
(HMTA), 49 App. U.S.C. SS 1801 It Ilde, to hazardous saterials
transportation at the Los Mlanos National Laboratory (LANL) •
This seating followed an inquiry to the Research and Special
Prograns Administration (RSPA) from the University's LANI
Counsel, Ellen M. Castille.
Inquired whether the HHTA and its Implesenting regulations,
Specifically, Ma. Castille
49 C.I.R. Parta 171-180 (the Hazardous Materiala Regulations
OI HMR), apply to the transportation of hazardous saterials
by the University in ita capacity as operator, under contract
to the DOI, of the LANk.
This letter sets out the jurisdictional frasevork of the HITA
as it applies to hazardous materials transportation by Federal
agencies and their contractors. Although RSPA exercises
rulenaking authority under the HITA with respect to all
bazardous materials transportation in comerce, enforcement
authority over land-based transportation is shared with the
Federal Highway Administration and the faderal Railroad
Administration.
Unifora Safety Act, Pub. L. No. 101-615, 104 Stat, 3244 (1990),
The INTA, as axended by the Hazardous Materiale Iransportation
applies to Many person" vho transports hazardous materials in
comerce. 49 App. U.S.C. S 1804(a) (3). The tern "person"
includes any:
government or Indian tribe when it offers
hasardous saterials for transportation in
in furtherance of' a comercial
commerce or transports hazardous materials
antarprise....

<<<PAGE 2>>>

2
Ide at S 1820(11). Hazardous naterials transportation by a
Federal, State or
• local government agency or an Indian tribe,
transportation is "in furtherance of a comercial enterprise."
then, is subject to regulation under the HMTA when that
RSPA defines this tera by its converse: governmental
transportation is not in furtherance of a comercial enterprise
when it is carried out (1) by government personnel and (2) IoI
a governmental purpose.
The sphere of "governmental purpose" cannot be delineated in
the abstract.
When the activity in conjunction with which
authorized, when it is a traditional "sovereign" activity or
the transportation occurs is constitutionally mandated or
one falling within the police power, or when its benefite
accrue to the public as a whole, it 1s likely to fall within
the realm of the governnental purpose.
The purpose is nore apt
to be deened non-governmental if there is a conscious purpose
to generate a profit, if the activity is undertaken by a public
with, or displaces, the private sector. Each case must be
corporation with linited liability, or il the activity corpetes
considered on its :
facts.
When the transporter is not the Federal Government itsell, but
a Federal contractor, the IMTA provides:
Any person who, under contract with any
departuent... of the federal government,
transports, or causes to be transported or
shipped, a
hazardous material ... shall
be subject to and couply vith all
provisions of (the HMTA], all orders and
regulations issued under (the INTA], and
all other substantive and procedural
requiresents of Federal, State and local
governaents and Indian tribes (except such
requirenents that have been preempted by
this chapter or any other federal law), in
the sane manner and to the sare extent as
any person engaged in such activities that
are in or affect cornerce is subject to
such provisions, orders, regulations, and
requirements.
49 App. U.S.C. S 1818. This provision, added to the statute by
the 1990 anendment, nerely clarified existing law.
SAR H. Rep.
No. 101-144 (Part 2), 101 Cong., 20 Sess. 43 (1990) (It is the
Connittee's fira position that [section 1818) simply restates
existing law.").
The provision neans that a Federal contractor
cannot clain sovereign immunity and does not share in the

<<<PAGE 3>>>

3
exception from HMTA jurisdiction conferred on the governmental
agency itself.
Therefore, the contractor's transportation
activity is subject to HMTA regulation if that activity is "in
commerce."
RSPA accords the "in comnerce" requirement its accepted
meaning. See 49 App. U.S.C. S 1802(2) (defining transportation
in "commerce"
as transportation that is or affects interstate
trade or traffic). Thus, the HMIA does not apply to trans-
portation that is entirely on private property and neither
by a faderal contractor 1s not in connerce if it takes place
rollowe not crosses a public way. analogously, transportatior
entirely on federal property to which there is no general
public right ol access, or Il public access lagally is deniad
during the period of transportation.
Were the University of California not itsell a government
performance of its contractual duties vould be subject to the
agency, its transportation of hazardous materials in the
HMTA, to the extent transportation occurred on public roads.
However, because the University 18 a governmental body, its
hazardous naterials transportation as the operator of the Los
subject to the HMTA, provided that transportation is by
Alamos National Laboratory, on public roads ox not, is not
governaent personnel and for a governnental purpose.
Governnental bodies, as well, are exempt from the registration
and fee requirements of 49 C.F.R. Subpart 107.600, even where
they transport hazardous materials in cornerco. 49 C.F.R.
S 107.606. And where transportation othervise vould be subject
to the HMTA, it may be excepted from regulation by a specific
excepting certain national security shipments of Class 7
code provision (leGe, 19 C.I.R. SS 173.7(b) and 177.806 (b),
radioactive materials).
Where the University'" hazardous naterials transportation, or
sone part of it, is exempted from HMIA Jurisdiction, the
University and DOE Still may find it desirable to agree, or
DOE may choose to require, that transportation shall be in
particularly given that it may not always be clear where the
accordance with IMR standards. Such a course may be sensible,
line between governaental and non-governmental purpose líes.
This decision, however, would be one not of the application
of the HMIA, but rather of contractual obligations owed to
the DOE by the University apart from BMIA Or U.S. Departaent
of Transportation Juriadiction.
If the HMR did not otherwise
apply, the University's agreement, voluntary or through
contract, to comply with the MR would not invoke U.S. DOT
enforcenent jurisdiction.

<<<PAGE 4>>>

I trust this guidance is of assistance to you.
free to call ne at 202-366-4400 if you have any further
Please feel
questions on this matter.
Sincerely,
ENt. Bana
Assistant Chief Counsel
Edwara i. Bonekemper, III
Hazardous Materials Safety &
Research and Technology
Law
CC:
Ellen M. Castille
Paul Brennan
Larry G. Blalock

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Hazmat/ChiefCounsel/CHI-93-001.pdf>
- Source ID: `phmsa`
- SHA-256: `b21888158739a518d920bd46253f582a8ef3787231e07df079b436c7ddf9b49a`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T22:12:23.009Z
- Document slug: `phmsa-interpretation-chi-93-001`

### Source metadata

```json
{
  "materialSubtype": "interpretation",
  "interpretationArea": "hazardous_materials",
  "representation": "full_text_from_official_pdf",
  "companies": [
    "Horton, Knox, Carter, & Foote"
  ],
  "individuals": [],
  "refIds": [
    "CHI-93-001"
  ],
  "catalogDates": [
    "1993-06-03"
  ],
  "catalogParts": [
    171
  ],
  "catalogRowCount": 1,
  "sourceRecordUrls": [
    "https://www.phmsa.dot.gov/node/51976"
  ],
  "linkedAttachmentUrls": [],
  "unavailableResponseUrls": [],
  "duplicateRepresentationUrls": [],
  "citedSections": [
    "171.8",
    "107.600",
    "107.606",
    "173.7(b)",
    "177.806"
  ],
  "catalogPageUrls": [
    "https://www.phmsa.dot.gov/regulations/title49/section/1718"
  ],
  "pdfUrls": [
    "https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Hazmat/ChiefCounsel/CHI-93-001.pdf"
  ],
  "representations": [
    {
      "viewUrl": "https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Hazmat/ChiefCounsel/CHI-93-001.pdf",
      "detailUrl": null,
      "detailHtmlPath": null,
      "pdfUrl": "https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Hazmat/ChiefCounsel/CHI-93-001.pdf",
      "pdfArtifactPath": "data/sources/phmsa-interpretations/chi-93-001-d3235ce5ff.pdf",
      "pdfArtifactSha256": "a04b640ef7c406e2d22460c3c3035dc1ecec318e96155ccd5ce51c27df4a13c5",
      "extractedTextPath": "data/sources/phmsa-interpretations/chi-93-001-d3235ce5ff.v2.txt",
      "extractedTextSha256": "0782551963f6f9870911b7fddbd80c0400b389b3846b27ae4119a403b425cc1d",
      "pageCount": 4,
      "extractionVersion": 2
    }
  ],
  "caveat": "Interpretations apply regulations to the facts presented and do not create independently enforceable requirements.",
  "jurisdiction": "US"
}
```
