# Paramount Tank, Inc. — Hazardous Materials Safety Interpretation

**Citation:** 00-0050  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2000-06-21

00-0050 response to Paramount Tank, Inc. concerning 178.345.

## Document text

<<<PAGE 1>>>

U.S. Department
of Transportation
400 Seventh Street, S.W.
Washington, D.C.
20590
Research and
Special Programs
Administration
JUN 2 / 2000
Mr. Howard Grey
Ref. No. 00-0050
Paramount Tank, Inc.
14066 Orange Avenue
Paramount, CA 90723
Dear Mr. Grey:
This is in response to your letter of February 4, 2000 concerning mounting an MC 306 cargo tank
onto a new chassis under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180).:
Specifically you asked if an MC 306 AL cargo tank mounted onto a new chassis, certified by a
Design Certifying Engineer, with changes in the bolster mounts to comply with newer MC 306 AL
tanks could continue to be registered as an MC 306 AL cargo tank.
The answer is yes. A cargo tank mounted onto a new chassis is not considered a new; cargo tank,
: thus could be continued to be an MC 306 AL cargo tank if all applicable regulations are followed in
§ 180.413.
I hope this satisfies your request.
Sincerely,
Delmer F. Billings
Chief, Standards Development
Office of Hazardous Materials Standards
178.345
000050

<<<PAGE 2>>>

New and Used Petroleum Transportation Tanks
PARAMOUNT TANK, INC.
PARAMOUNT, CALFORNIA 90723
14066 ORANGE AVENUE
LONG BEACH (562) 6345184
LOS ANGELES (213) 7740600
FAX (562) 634-8275
Johnser
8178.345
Mr. Edward T. Mazzullo
Director, Office of Hazardous Materials Standard
00-0050
U.S. Department of Transportation
400 Seventh Street S. W
Washington D.C. 20590
Dear Sir:
We have a customer that has a Fruehauf MC 306 AL truck tank. The truck tank
was manufactured with four bolster mounts. He has requested that the number four
bolster be removed and the tank be mounted on a new chassis using the front 3 bolsters.
These bolsters are to be reinforced as needed to accept the additional loads and the
mounting is to certified by a Design Certifying Engineer. This change would make
the tank comply with the newer MC 306 Al tanks. No welding or changes are
to be made to the barrel, valves or equipment. May this tank continue to be registered as
an MC 306 AL truck tank
Your earliest reply would be appreciated as a new truck chassis is available to accept this
mounting.
Sincerely;
Paramount Tank, Inc.
Howard fre
Ioward Gre

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2000/000050.pdf>
- Source ID: `phmsa`
- SHA-256: `28ef9ac249aaf2f3c09f6c9222fadff932122f17ad5db3fcc40acf62fc325236`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T04:04:04.861Z
- Document slug: `phmsa-interpretation-00-0050`

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