# Sun Pipe Line Company — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-72-058
- **title:** Sun Pipe Line Company — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 1972-08-22
- **effective on:** Not available
- **summary:** PI-72-058 response to Sun Pipe Line Company concerning 195.260.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-058.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-058.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-058
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1972/PI72058.pdf
**body:**

<<<PAGE 1>>>

August 22, 1972
Mr. M. L. Sneed, P.E.
Senior Staff Engineer
Sun Pipe Line Company
P.O. Box 3187
Longview, Texas 75601
Dear Mr. Sneed:
This is in response to your letter dated July 19, 1972, regarding
the location of valves on a crude oil pipeline which will have a
lake constructed across it in Nacogdoches County, Texas.
You indicated that a lake is to be constructed over your crude oil
pipe and the lake will have:
(a) a normal water elevation of 279 feet with 8500 linear feet of
pipe under water.
(b) a 100-year storm water elevation of 286 feet with 8720 linear
feet of pipe under water.
(c) a maximum design storm water elevation of 299 feet with 9230
linear feet of pipe under water.
You asked our assistance in determining the proper elevation in
locating the valves for this pipeline which will be under the
water.
Section 195.260(e) requires that the valves be located on each side
of a water crossing that is more than 100 feet wide from high-water
mark to high-water mark. Since the purpose of the requirement is
to protect the waterway from contamination, the valves should be
placed so as to best effectuate this purpose. In this particular
instance, it appears that locating the valves based on the 100-year
storm water elevation of 286 feet would adequately protect the
lake.
We trust that this has answered your specific question. be of further service in this matter, please let us know.
If we can
Sincerely,
/signed/
Joseph C. Caldwell
Director
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Office of Pipeline Safety
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