# Arco Oil and Gas Company — Pipeline Safety Interpretation

**Citation:** PI-92-053  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1992-10-01

PI-92-053 response to Arco Oil and Gas Company concerning 195.1.

## Document text

<<<PAGE 1>>>

October 1, 1992
Ms. Brenda Y. Munoz
Regulatory Compliance & Environmental
Coordinator
Arco Oil and Gas Company
P.O. Box 1346
Houston, TX 77251
Dear Ms. Munoz:
Your letter of August 17, 1992, addressed to Richard Rippert of
this office describes an offshore LPG pipeline that operates at a
stress level of less than 20% of SMYS. You asked whether employees
who operator and maintain this pipeline are subject to drug testing
under 49 CFR Part 199.
If the line is exempt from Part 195 under ? 195.1(b)(3) because of
its operating stress level, then the employees who operate and
maintain the line are not subject to drug testing under Part 199
unless they also operate and maintain other pipeline facilities
which are regulated.
Please note, though, that we have begun a rulemaking proceeding
aimed at bringing hazardous liquid pipelines that operate at less
than 20% of SMYS under Part 195 (Docket PS-117; 55 FR 45822;
October 31, 1990.) This proceeding affects your LPG pipeline. If
it were to become subject to Part 195 as a result of that
proceeding, employees who operate and maintain the line would be
subject to drug testing under Part 199.
We trust this adequately responds to your inquiry.
Sincerely,
Cesar De Leon
Director, Regulatory Programs
Office of Pipeline Safety

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1992/PI92053.pdf>
- Source ID: `phmsa`
- SHA-256: `933998b30825d02041106c9fa7ec7a5c7ade5660fd535bb7b6528385a38eb9c7`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T15:27:57.365Z
- Document slug: `phmsa-interpretation-pi-92-053`

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```