# Shore Chemical Company — Hazardous Materials Safety Interpretation

**Citation:** 00-0135  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2000-05-17

00-0135 response to Shore Chemical Company concerning 171.8.

## Document text

<<<PAGE 1>>>

400 Seventh Steer S.S90
Washington, D.C
spect Programs
Administratior
MAY 1 7 2000
Mir. John Shore, Jr.
Ref. No. 00-0135
Shore Chemical Company
P.O. Box 1632
743 N. Tully Road
Turlock, CA 95381
Dear Mr. Shore:
This is in response to your letter dated May 3, 2000 regarding the definition of a hazardous substance
under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180).
Under § 171.8, a hazardous substance is defined as a material, including its mixtures and solutions, that:
(1) is listed in Appendix A to § 172.101 of the HMR; (2) is in a quantity, in one package, which equals
or exceeds its reportable quantity; and (3) is in a concentration by weight which equals or exceeds the
concentration corresponding to the RQ of the material, as shown in the table under § 171.8.
In your letter, you state that your company packages dichlorvos (4.65 percent concentration) in a
package weighing 37.20 pounds (5 gallons). To meet the definition of a hazardous substance, the
quantity of dichlorvos must equal or exceed 10 pounds and 0.02 percent concentration by weight.
Your 5 gallon package contains only 1.73 pounds of dichlorvos and, therefore, does not meet the
definition of a hazardous substance.
I hope this satisfies your request.
Sincerely,
Transportation Regulations Specialists
Office of Hazardous Materials Standards
171.8
000135

<<<PAGE 2>>>

CHEMICAL CO.;
209 667 0316;
May-3-00 11:13AM;
Page 1/1
PRODUCTS FOR AGRICULTURE AND INDUSTRY
SHORE CHEMICAL COMPANY
P.O. BOX 1632 - 743N. TULLY ROAD - TUALOCK, GALIFORNIA 85381 • (209) 839-2144
Gale
00-0135
TELEFAX
Date:_May 3, 2000
Company: U.S. Department of TransportationTelefax No.: (202) 366-3012
Attn.: Edward T. Mazzulo
-
Total Pages Including This Cover:
_1.
From:
John Shore, Jr.
Ren your
*
**
Message:
Dear Mr. Mazzulo,
package torn ten e
My question to you is, if I were hauling on the highways a 5-gal pail with
* solution that has 4.65% Dichlorvos in it, would I be required to have RQ
on the hazard déscription on the 5-gal pail?
1-gallon of this solution weighs 7.44 Los.
5-gal pail of this solution weighs 37.20 Ibs.
1, /bs
Dichlorvos - Reportable quantity is 10 Ibs.
I need a letter or fax from the Department of Transportation answering this
question for a court appearance which is May 15, 2000.
Thank you,
IF TOTAL NUMBER OF PAGES ABOVE WAS NOT RECEIVED,
PLEASE CALL (209) 634-2144
FACSIMILE (209) 667-0316

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2000/000135.pdf>
- Source ID: `phmsa`
- SHA-256: `a2a5cbf6c16100a852e3e627d465f7ace3d4d06ec7c438979e07cea2ede0bc97`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T11:48:48.280Z
- Document slug: `phmsa-interpretation-00-0135`

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