DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Greeley, Colorado Mobile Drug & Alcohol Testing
Wattenberg Oil & Gas Field · JBS USA Meat Processing · Agriculture · US-85 FMCSA — DOT-compliant mobile collections in Weld County.
Weld County is the most oil and gas productive county in Colorado — the DJ Basin/Wattenberg Gas Field is one of the densest drilling areas in the Rocky Mountain region, with operators including Civitas Resources, Occidental, and Chevron running hundreds of active wells. JBS USA's Greeley beef processing facility is one of the largest in the country, employing over 6,000 workers. Agricultural CDL activity on US-85 and US-34 is some of the heaviest in Northern Colorado. PHMSA pipeline obligations apply throughout the dense Wattenberg gathering network. OnSite Employer Testing dispatches throughout Weld County — to well pads, processing facilities, and ag operations.
OnSite Employer Testing coordinates mobile drug testing collections at your Greeley-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.
Colorado's Most Productive County for Oil, Gas, and Agriculture
Weld County is the most oil and gas productive county in Colorado — the DJ Basin/Wattenberg Gas Field is one of the densest drilling areas in the Rocky Mountain region, with operators including Civitas Resources, Occidental, and Chevron running hundreds of active wells. JBS USA's Greeley beef processing facility is one of the largest in the country, employing over 6,000 workers. Agricultural CDL activity on US-85 and US-34 is some of the heaviest in Northern Colorado. PHMSA pipeline obligations apply throughout the dense Wattenberg gathering network. OnSite Employer Testing dispatches throughout Weld County — to well pads, processing facilities, and ag operations.
PHMSA 49 CFR Part 199 governs the extensive pipeline gathering network in the DJ Basin/Wattenberg Field. FMCSA 49 CFR Part 382 applies to CDL fleets on US-85. 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 Greeley
Oil and gas
Oil and gas — DJ Basin/Wattenberg Field (Civitas, Occidental, Chevron). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
Natural gas gathering and pipeline
Natural gas gathering and pipeline — Wattenberg midstream network. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
Meat processing
Meat processing — JBS USA Greeley plant. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
Agriculture
Agriculture — Weld County feedlots, grain, and sugar beet production. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
CDL freight
CDL freight — US-85 and agricultural transport corridors. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
Healthcare
Healthcare — UCHealth Greeley, Banner Health. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
Construction
Construction — Northern Colorado Weld County growth. We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Greeley market.
Applicable RegulationsGreeley, CO
Employers in Greeley commonly coordinate testing under:
- PHMSA 49 CFR Part 199 — Pipeline workers, compression station operators, and gathering system employees in the DJ Basin/Wattenberg Gas Field
- FMCSA 49 CFR Part 382 — CDL drivers on US-85, US-34, and CO-392 serving oil field support, agricultural transport, and meat processing logistics
- DOT Return-to-Duty & Follow-Up — SAP-supervised employees
Testing Services Available in Greeley
We coordinate the following collections for Greeley-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 Greeley
Pre-employment, Random, Reasonable Suspicion, Post-Accident — urine, oral fluid, and EBT
Meat processing workforce panels — JBS USA Greeley plant large-scale pre-employment and random programs
Oil & Gas field crew panels — well site consultants, water haulers, roustabout contractors
Agricultural sector testing — feedlot operations, grain elevator, farm supply CDL
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
Can you handle large-scale pre-employment testing for JBS or similar large employers?
Yes. We scale collections to match high-volume hiring events — dispatching multiple collectors to your facility for same-day or multi-day onboarding blitzes.
Do you serve remote DJ Basin well sites in Weld County?
Yes. Remote well pad collections are available throughout the Wattenberg Field and broader Weld County oil and gas area. No employee needs to leave the site.
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 Greeley's Oil, Gas, and Agricultural Workforce
DJ Basin operators, JBS USA, and Weld County CDL carriers — get compliant mobile testing dispatched to your site today.