# El Paso Natural Gas Company — Pipeline Safety Interpretation

**Citation:** PI-71-039  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1971-03-23

PI-71-039 response to El Paso Natural Gas Company concerning 192.1.

## Document text

<<<PAGE 1>>>

March 22, 1971
Mr. William F. Howard
Attorney-in-Fact
El Paso Natural Gas Company
El Paso, Texas 79999
Dear Mr. Howard:
The Board of Commissioners of Cowlitz County, State of Washington has written us expressing
concern about the compatibility of your transmission line construction plans in that county with a
comprehensive plan which the county has adopted for future development. Enclosed with their
letter was a copy of a letter from you, dated February 19, 1971, to Mr. & Mrs. Oliver R. Proud of
Kelso, Washington, concerning your plans for uprating your existing 26" pipe in the event of a
change in class location and, as your letter states "the 30" pipe line, when constructed and placed
in operation, will meet Class 3 requirements of the Department of Transportation." We would
appreciate more precise information as to your design, construction, operation and maintenance
plans for the 30" pipe so that we may write an adequate reply to the County Commissioners.
Sincerely,
\SIGNED\
Joseph C. Caldwell
Director
Office of Pipeline Safety
dal\192.1-a\1\71-03-22
1

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1971/PI71039.pdf>
- Source ID: `phmsa`
- SHA-256: `c42c454e0c3d0a39dc8550d74852394d9dcc2fdfd123428726a5f3f42b218455`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T05:51:46.565Z
- Document slug: `phmsa-interpretation-pi-71-039`

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  "caveat": "Interpretations apply regulations to the facts presented and do not create independently enforceable requirements.",
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```