DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Grand Junction, Colorado Mobile Drug & Alcohol Testing
Piceance Basin Oil & Gas · GJT Airport FAA · I-70 FMCSA · Union Pacific FRA — Mobile collections in Western Colorado's energy capital.
Grand Junction is the commercial center of Western Colorado and the primary services hub for the Piceance Basin — one of Colorado's most significant natural gas and oil shale production zones. Energy companies including Chevron, Bonanza Creek, and numerous E&P operators base their Western Slope operations here. Grand Junction Regional Airport (GJT) serves charter and commercial aviation. Union Pacific's main line through the Grand Valley is a critical freight artery connecting Colorado to Utah. I-70 through Glenwood Canyon is one of the most challenging — and heavily trucked — mountain freight routes in the U.S. OnSite Employer Testing serves Mesa County and the full Western Slope energy corridor.
OnSite Employer Testing coordinates mobile drug testing collections at your Grand Junction-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.
Western Colorado's Energy and Logistics Hub
Grand Junction is the commercial center of Western Colorado and the primary services hub for the Piceance Basin — one of Colorado's most significant natural gas and oil shale production zones. Energy companies including Chevron, Bonanza Creek, and numerous E&P operators base their Western Slope operations here. Grand Junction Regional Airport (GJT) serves charter and commercial aviation. Union Pacific's main line through the Grand Valley is a critical freight artery connecting Colorado to Utah. I-70 through Glenwood Canyon is one of the most challenging — and heavily trucked — mountain freight routes in the U.S. OnSite Employer Testing serves Mesa County and the full Western Slope energy corridor.
PHMSA 49 CFR Part 199 governs the extensive natural gas pipeline and gathering network in the Piceance Basin. FAA 14 CFR Part 120 applies to GJT safety-sensitive aviation employees. FRA 49 CFR Part 219 covers Union Pacific Grand Valley mainline employees. FMCSA 49 CFR Part 382 governs I-70 and Western Slope CDL fleets. Colorado Amendment 64 does not affect DOT testing.
Program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections.
Industries Served in Grand Junction
Oil and gas
Oil and gas — Piceance Basin E&P operators, Chevron, Bonanza Creek. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Natural gas gathering and pipeline
Natural gas gathering and pipeline — Western Slope midstream operators. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Aviation
Aviation — Grand Junction Regional Airport (GJT). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Railroad
Railroad — Union Pacific Grand Valley mainline. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
CDL freight
CDL freight — I-70 mountain corridor, US-50 Southern Ute area. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Healthcare
Healthcare — St. Mary's Medical Center, Community Hospital. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Agriculture
Agriculture — Western Slope orchards, vineyards, and produce transport. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Construction and mining
Construction and mining — Mesa and Garfield County projects. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Grand Junction market.
Applicable RegulationsGrand Junction, CO
Employers in Grand Junction commonly coordinate testing under:
- PHMSA 49 CFR Part 199 — Pipeline workers and operators for Piceance Basin natural gas gathering, compression, and transmission lines
- FAA 14 CFR Part 120 — Pilots, dispatchers, A&P mechanics, and safety-sensitive ramp personnel at Grand Junction Regional Airport (GJT)
- FRA 49 CFR Part 219 — Union Pacific mainline employees in the Grand Junction/Grand Valley territory
- FMCSA 49 CFR Part 382 — CDL drivers on I-70, US-50, and US-6 serving Western Colorado oil field support and freight
- DOT Return-to-Duty & Follow-Up — SAP-supervised employees
Testing Services Available in Grand Junction
We coordinate the following collections for Grand Junction-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 Grand Junction
Pre-employment, Random, Reasonable Suspicion, Post-Accident — urine, oral fluid, and EBT
Oil & Gas non-DOT panels — roughneck crews, well site consultants, water haulers, construction contractor workforces
Remote well pad and field camp collections — Piceance Basin and Roan Plateau sites
Colorado Marijuana Compliance — Amendment 64 does NOT affect DOT-regulated employees
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
Do you travel to Piceance Basin well sites and remote Western Slope locations?
Yes. Remote well pad and field camp collections are a core service in Grand Junction. We dispatch to Garfield, Rio Blanco, and Mesa County energy sites — no employee needs to drive to town for a collection.
Can you serve GJT airport operations for FAA-regulated crews?
Yes. We coordinate FAA 14 CFR Part 120 compliant collections for pilots, mechanics, and other safety-sensitive aviation employees at Grand Junction Regional Airport.
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.
Mobile Testing for Western Colorado's Energy and Freight Corridor
Piceance Basin operators, GJT airport crews, Union Pacific, and I-70 carriers — get compliant mobile collections dispatched to your Western Slope site.