Back to Resource Center
GCC original articleRegulatory explainers

PHMSA Drug and Alcohol Testing Requirements for Contractors

Explains when Part 199 applies, which roles are covered, and how operator contracts affect implementation.

By Gas Contractor Connect editorial teamPublished 7 min read

The rule in one paragraph

49 CFR Part 199 requires operators of regulated pipeline facilities to maintain anti-drug and alcohol misuse prevention programs covering each employee who performs a covered function — operating, maintenance or emergency-response functions on the pipeline. Testing follows the procedures in 49 CFR Part 40. Contractor personnel performing covered functions are generally brought within the operator's program or a compliant program the operator accepts.

Determining whether your people are covered

  • Identify the functions performed, not the job titles used.
  • Ask the operator which of your scoped tasks it treats as covered functions.
  • Confirm in the contract whose program applies and who maintains the random pool.
  • Confirm pre-employment, post-accident, random, reasonable-cause, return-to-duty and follow-up expectations.

Records and audits

Operators are audited on their programs and will pass documentation expectations down to you. Keep program enrollment evidence, collection-site arrangements, MRO details and training records organized per person and available on short notice.

Test results are sensitive personal information: restrict access, retain per the applicable retention rules, and never store results in general project folders.

Common contractor mistakes

  • Assuming a DOT/FMCSA driver testing program automatically satisfies Part 199 coverage.
  • Enrolling only supervisors rather than every individual performing covered functions.
  • Letting random-pool administration lapse between projects.

Primary sources

Related resources

Requirements vary by operator, work scope, jurisdiction, and project. Confirm requirements with the applicable operator, regulator or licensing authority, and qualified advisors. These resources are informational and are not legal or regulatory advice.
Back to Resource Center