DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
On-Site Employer Drug Testing in Billings, Montana
ExxonMobil Refinery - CHS Laurel Refinery - BNSF Yellowstone Division - I-90/I-94 Interchange - Billings Logan International - Yellowstone County Contractors
Billings is Montana's largest city and the energy and logistics hub of the Northern Rockies. The ExxonMobil Billings Refinery and the CHS refinery in nearby Laurel together process over 100,000 barrels per day, making PHMSA 49 CFR Parts 199 and 382 compliance mandatory for pipeline and hazmat transportation operators. BNSF's Yellowstone Division maintains a major hub in Billings, triggering FRA 49 CFR Part 219 annual random testing pools for maintenance-of-way, train, and engine crews. The I-90/I-94 interchange routes thousands of commercial vehicles weekly through Yellowstone County, keeping FMCSA Part 40 CDL testing in constant demand. Billings Logan International Airport employs safety-sensitive personnel governed by FAA 14 CFR Part 120. Our collectors travel to refineries, rail yards, trucking terminals, construction sites, and warehouses -- your workers never leave the job.
OnSite Employer Testing coordinates mobile drug testing collections at your Billings-area facility, yard, terminal, or job site. We do not operate a clinic. Review how it works, browse Montana locations, or see all locations we serve.
Billings Employers Depend on Worksite Drug Testing Built for Refinery, Rail, and Transportation
DOT & Non-DOT Testing Services — Billings
We coordinate the following collections for Billings-area employers:
- DOT FMCSA pre-employment and random drug/alcohol testing for CDL drivers and motor carriers on I-90/I-94
- PHMSA 49 CFR Parts 199/382 pipeline operator and hazmat transportation testing for ExxonMobil and CHS refinery contractors
- FRA 49 CFR Part 219 reasonable suspicion and post-accident testing for BNSF Yellowstone Division crews
- FAA 14 CFR Part 120 safety-sensitive employee testing at Billings Logan International Airport
- 5-panel, 10-panel, and expanded DOT urine drug screens collected on your Yellowstone County worksite
- Oral fluid (saliva) and observed collection for return-to-duty and follow-up testing programs
- Breath alcohol testing (BAT) and instant alcohol screening for supervisors and safety officers
- Non-DOT pre-employment, random, and post-incident testing for oilfield services, construction, and healthcare employers
- Medical Review Officer (MRO) coordination and results delivery for employer drug-free workplace programs
Industries Served in Billings
- Oil refining and petrochemical (ExxonMobil, CHS) -- PHMSA compliance
- Railroad operations and maintenance (BNSF Yellowstone Division) -- FRA compliance
- Commercial trucking and freight (I-90/I-94 corridor) -- FMCSA compliance
- Aviation ground operations (Billings Logan International) -- FAA compliance
- Commercial construction and general contracting
- Healthcare systems (Billings Clinic, SCL Health St. Vincent) and staffing
Montana Cannabis Law and Federal DOT Compliance in Billings
Montana voters passed Initiative I-190 legalizing recreational cannabis effective January 1, 2022. However, Montana Code Annotated Section 16-12-108 explicitly preserves employer rights: businesses may prohibit cannabis use, maintain zero-tolerance drug-free workplace policies, and decline to hire or discipline workers who test positive -- regardless of off-duty use. For federally regulated employers in Billings, DOT rules under 49 CFR Part 40 supersede state cannabis law entirely. A CDL driver who tests positive for THC metabolites faces the same federal consequences as any other positive test: immediate removal from safety-sensitive duties, mandatory SAP evaluation, and no return-to-duty until cleared. Refinery and pipeline operators under PHMSA Part 199 face parallel requirements. Billings employers in any sector may lawfully maintain and enforce written drug-free workplace policies without accommodation for cannabis.
On-Site Collections in Billings
Refineries, rail yards, trucking terminals, and construction sites across Yellowstone County count on our collectors -- not clinics. Call (219) 315-0345 or get an instant quote at onsiteemployertesting.com/quote-calculator.
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
Our Billings refinery uses contract labor from multiple staffing agencies. Which employer is responsible for the DOT drug testing program?
Under 49 CFR Part 40 and DOT agency rules, the employer of record -- the entity that designates the employee as safety-sensitive -- owns the testing obligation. If your refinery directly supervises contractor workers in pipeline operator or hazmat transportation roles, you may be the actual employer for DOT purposes regardless of payroll company. We recommend consulting your DOT compliance officer or legal counsel to determine covered employee status, then we handle all collections, MRO coordination, and chain-of-custody documentation on your Billings worksite.
Can Billings employers still enforce a zero-tolerance cannabis policy now that Montana has recreational marijuana?
Yes. Montana Code Ann. Section 16-12-108 is explicit -- employers are not required to accommodate cannabis use and may maintain, publish, and enforce drug-free workplace policies that prohibit cannabis. Positive THC results can be treated the same as any other positive drug test for pre-employment, random, reasonable suspicion, or post-accident purposes. Federal contractors and federally regulated employers (DOT, PHMSA, FRA) have an additional obligation: federal law governs and cannabis positive results carry mandatory adverse action regardless of state law.
How quickly can you get a collector to a Billings job site for a post-accident test?
We dispatch collectors across Yellowstone County and the greater Billings metro area for urgent post-accident and reasonable suspicion collections. DOT post-accident alcohol testing must begin within two hours and urine collection within eight hours of a qualifying incident. Contact us immediately at (219) 315-0345 and we will mobilize a collector to your worksite, terminal, or incident location as fast as possible.
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.
Get On-Site Drug Testing to Your Billings Worksite Today
Refineries, rail yards, trucking terminals, and construction sites across Yellowstone County count on our collectors -- not clinics. Call (219) 315-0345 or get an instant quote at onsiteemployertesting.com/quote-calculator.