DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Casper, WY Mobile Drug & Alcohol Testing
Powder River Basin CDL crude oil tanker fleets · PHMSA pipeline and gathering system operators · Oilfield services and well site employers · I-25 / US-20 freight corridor · Same-day dispatch available
Casper anchors Natrona County on the North Platte River and serves as the commercial and logistics center for Wyoming's Powder River Basin oil and gas operations. CDL tanker truck drivers hauling crude oil and produced water on I-25, US-20, and US-26 are subject to FMCSA testing under 49 CFR Part 382. Pipeline operators running gathering and transmission systems in the Powder River and Wind River Basins follow PHMSA testing requirements under 49 CFR Part 199. Oilfield service companies including well completion crews, workover rigs, and production maintenance employers maintain drug-free workplace programs as a condition of operator contractor qualification with companies like Devon Energy, Chesapeake, and Burlington Resources. Casper's industrial base also includes manufacturing, healthcare anchored by Wyoming Medical Center, and a construction sector driven by ongoing energy infrastructure build-out. The geographic reality of Natrona County - where the nearest collection clinic to an active well site can be 50 miles or more - makes mobile on-site dispatch not a convenience but the only viable compliance solution. OnSite Employer Testing dispatches mobile collectors to Casper fleet yards, pipeline staging areas, oilfield contractor facilities, and employer sites throughout Natrona County when routing and collector availability allow.
OnSite Employer Testing coordinates mobile drug testing collections at your Casper-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.
Casper is the oil and gas capital of Wyoming - the Powder River Basin's commercial hub where CDL tanker fleets, PHMSA-regulated pipelines, and oilfield service companies generate the most compliance-intensive employer testing demand in the Mountain West.
DOT & Non-DOT Testing Services — Casper
We coordinate the following collections for Casper-area employers:
- PHMSA-compliant drug & alcohol testing (49 CFR Part 199) - Powder River Basin pipeline operators and natural gas gathering system employers
- DOT urine drug testing (49 CFR Part 40) - FMCSA CDL tanker operators on I-25, US-20, and US-26 Natrona County corridors
- Non-DOT workplace drug testing - oilfield services, well site construction, and energy contractor employer panels
- Post-accident drug & alcohol testing - dispatched to well sites, pipeline staging areas, and yards throughout Natrona County
- Reasonable suspicion testing - on-site at your Casper facility or field staging area on supervisor direction
- Random testing program collections - scheduled around oilfield crew rotations, tanker dispatch windows, and pipeline shift changes
- Breath alcohol testing (BAT/SAAT) - FMCSA and PHMSA-compliant for Casper-area regulated employer programs
- Pre-employment drug testing collections - for oilfield services, pipeline contractor, and CDL tanker new-hire onboarding at your site
Industries Served in Casper
- Oil and gas production - Powder River Basin operators and oilfield service companies in Natrona County
- CDL crude oil and produced water tanker fleets on I-25, US-20, and US-26
- PHMSA-regulated pipeline operations - gathering, transmission, and processing employers in the Casper basin corridor
- Manufacturing and industrial - Casper's diversified industrial employer base
- Healthcare - Wyoming Medical Center and affiliated Natrona County health employer networks
- Construction and infrastructure - energy facility build-out and Casper commercial development contractors
Applicable Regulations - Casper, WY
Casper's employer base carries some of the broadest DOT and PHMSA regulatory exposure of any small city in the Mountain West. Pipeline operators in the Powder River Basin follow 49 CFR Part 199 (PHMSA) for covered employees performing operations, maintenance, or emergency response on regulated pipeline systems. CDL tanker drivers on I-25 and US-20 follow 49 CFR Part 382 (FMCSA). HAZMAT endorsement holders transporting crude oil and flammable liquids are subject to enhanced random pool inclusion under 49 CFR Part 382.305. All DOT collections follow 49 CFR Part 40. Wyoming does not have a recreational cannabis law and does not have a state medical marijuana law - Wyoming remains one of the strictest cannabis states in the country. Employers face zero state-law cannabis accommodation obligations. A positive THC result under any program can be acted upon immediately under your written policy without state cannabis law complications. Program design remains the employer's responsibility.
On-Site Collections in Casper
From Powder River Basin CDL tanker yards to PHMSA pipeline staging areas to Natrona County oilfield contractor facilities, request a quote and we will be direct about routing availability and dispatch timing for your Casper locations.
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
We operate crude oil tanker trucks out of Casper on I-25 and the Powder River Basin road network - can you come to our yard for DOT random and post-accident collections without sending drivers to a clinic 50 miles away?
That is the exact problem mobile dispatch solves in a market like Casper. Provide your yard address, CDL driver pool size, and preferred window at booking. We confirm routing and collector availability before you hold the calendar. For post-accident dispatch, call immediately after the scene is safe - 49 CFR Part 382.303 requires alcohol testing within 8 hours and drug testing within 32 hours of a qualifying incident.
We run a natural gas gathering pipeline in Natrona County - what does PHMSA testing require for our employees?
PHMSA 49 CFR Part 199 requires drug and alcohol testing for covered employees performing operations, maintenance, or emergency response on regulated pipeline facilities. Required triggers include pre-employment, random (minimum 25% for drugs and 10% for alcohol annually), post-accident, reasonable cause, return-to-duty, and follow-up testing. PHMSA program requirements differ from FMCSA in random rate calculations, covered employee definitions, and some collection procedures. We perform on-site collections for PHMSA-covered programs at your Natrona County pipeline facility. Program design and covered employee determinations remain your responsibility.
Wyoming has no cannabis law at all - how does that affect our oilfield contractor drug policy?
Wyoming is one of the most employer-favorable cannabis legal environments in the country. No medical card defense, no recreational-use employment protection, no state-law accommodation requirement of any kind. A positive THC result under your written policy can be acted upon immediately and consistently without any state cannabis law friction. For oil patch contractors whose major operator clients (Devon, Chesapeake, Burlington Resources) require drug-free workplace programs as a condition of site access, Wyoming's legal environment aligns cleanly with those requirements.
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 Drug Testing for Casper's Oil Patch, Pipeline, and Tanker Fleet Employers
From Powder River Basin CDL tanker yards to PHMSA pipeline staging areas to Natrona County oilfield contractor facilities, request a quote and we will be direct about routing availability and dispatch timing for your Casper locations.