DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Mobile Drug & Alcohol Testing in Bakersfield, California
On-site DOT-compliant collections at Chevron Kern River oil fields, California Resources Corp production sites, Halliburton and SLB oilfield service yards, and BNSF Bakersfield Yard.
On-site DOT-compliant collections at Chevron Kern River oil fields, California Resources Corp production sites, Halliburton and SLB oilfield service yards, and BNSF Bakersfield Yard. Bakersfield anchors oil & gas exploration & production (phmsa/fmcsa), oilfield services (fmcsa), rail (fra) employer demand — including Chevron Kern River; California Resources Corp (CRC); Halliburton Bakersfield; SLB (Schlumberger) Bakersfield, and related operators across California. For safety-sensitive CDL drivers, pipeline workers, railroad crews, and aviation employees who cannot leave a shift for a clinic visit, mobile collection keeps operations staffed while meeting federal custody requirements.
OnSite Employer Testing coordinates mobile drug testing collections at your Bakersfield-area facility, yard, terminal, or job site. We do not operate a clinic. Review how it works or browse all locations we serve across the region.
Why Bakersfield Employers Need Mobile Testing
Oilfield gate-entry testing at Chevron Kern River and CRC production sites — PHMSA-compliant collections
Halliburton and SLB Bakersfield service yard CDL random pool management and pre-employment testing
program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections
Industries We Serve in Bakersfield
Chevron Kern River
Chevron Kern River — largest US thermally-enhanced oil recovery PHMSA/FMCSA (PHMSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
California Resources Corp (CRC)
California Resources Corp (CRC) — largest California oil and gas producer PHMSA (PHMSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
Halliburton Bakersfield
Halliburton Bakersfield — oilfield service CDL equipment fleet FMCSA (FMCSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
SLB (Schlumberger) Bakersfield
SLB (Schlumberger) Bakersfield — wireline and completion CDL fleet FMCSA (FMCSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
BNSF Bakersfield Yard
BNSF Bakersfield Yard — FRA covered railroad employees (FRA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
Plains All American Pipeline
Plains All American Pipeline — Kern County crude gathering PHMSA (PHMSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
Grimmway Farms
Grimmway Farms — carrot processing CDL fleet Kern County FMCSA (FMCSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Bakersfield market.
Applicable Regulations
Employers in Bakersfield commonly coordinate testing under:
- 49 CFR Part 40 — DOT collection and laboratory procedures
- 49 CFR Part 382 — FMCSA CDL oilfield service and agricultural carrier fleets
- 49 CFR Part 199 — PHMSA oil and gas pipeline operators (Chevron, CRC, Plains All American)
- 49 CFR Part 219 — FRA covered service BNSF Bakersfield
- California Division of Oil, Gas, and Geothermal Resources (DOGGR) safety requirements
- California Labor Code §§ 1025–1028 — employer drug-free workplace programs
Testing Services Available in Bakersfield
We coordinate the following collections for Bakersfield-area employers:
DOT drug testing collections (FMCSA, FRA, FAA, FTA, PHMSA)
- Pre-employment drug and alcohol testing
- Reasonable suspicion and return-to-duty testing
Breath alcohol testing (BAT certified)
- Oral fluid drug testing
Mobile and on-site collections at your facility, yard, or job site
On-Site Collections in Bakersfield
Plains All American pipeline operator PHMSA collections for Kern County crude gathering systems
BNSF Bakersfield Yard FRA covered-service random and post-incident collections
24/7 post-accident response for oilfield CDL incidents throughout Kern County
Use our instant quote calculator to scope your collection or visit our service areas page for broader coverage context.
Questions from employers in this region
Can you collect at remote Chevron and CRC oil field sites in Kern County?
Yes. We serve remote Kern County oilfield locations including Chevron Kern River, Midway-Sunset, Elk Hills, and other California Resources Corp production areas where clinic access is impractical for PHMSA-covered pipeline and production workers.
Our oilfield service CDL drivers rotate between Bakersfield and Ventura County fields. Can you cover both areas?
We coordinate collections for oilfield service employers operating across Southern California's producing basins — including Kern County, Ventura County, and the Santa Maria Basin. Call (219) 315-0345 to discuss your crew rotation schedule.
What does PHMSA drug testing require that standard DOT testing doesn't?
PHMSA pipeline operators (49 CFR Part 199) must test for the same five DOT drug categories as FMCSA but have specific requirements for pipeline-covered function employees, including operators, maintenance workers, and emergency response personnel. We document all collections to PHMSA chain-of-custody standards.
Core programs: Mobile & on-site drug testing, DOT drug testing, Non-DOT drug testing, Post-accident testing, Reasonable suspicion testing, Random testing programs, Breath alcohol testing. Planning: how it works, instant quote calculator, all locations. Industries: employer industries we support. Long-form answers: Employer drug testing FAQ. Quick questions: Contact us.
For how we think about regions and feasibility, see service areas.
Nationally coordinated collection support
OnSite Employer Testing is headquartered in Illinois and coordinates mobile and on-site employer testing across selected regions and employer locations—including through partner collectors when your program, timing, and geography allow. Availability depends on location, timing, test type, site access, collector availability, and scheduling needs.
Scope collections for your Bakersfield-area operation
Share your facility address, expected donor count, test reason, and DOT or non-DOT status — we confirm what is workable and send a written proposal.