DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Mobile Employer Drug Testing in Gary, Indiana
We travel to your facility — steel mill, fleet yard, rail operation, or industrial site — and administer federally compliant DOT and Non-DOT collections on-site. No clinic. No lost shifts.
Gary is Indiana's most industrially concentrated city, anchored by U.S. Steel's Gary Works — one of the largest integrated steel mills in North America — operating on the shore of Lake Michigan at the junction of I-90, I-80/94, and the Indiana Toll Road. The Gary Railway Company, a Class III switching carrier, operates 71 miles of track 24 hours a day, 365 days a year, interchanging with multiple Class I railroads to move steel and raw materials in and out of Gary Works. Djuric Trucking runs secured heavy-haul operations from Gary with rail transport and port handling capabilities. Gary/Chicago International Airport supports corporate, cargo, and general aviation operations and is home to Indiana Army National Guard aviation support. NIPSCO's regional gas and electric utility footprint runs through Lake County, adding PHMSA-regulated utility workers to the area's DOT testing landscape. For employers in this industrial environment, mobile testing is the only model that keeps safety-sensitive workers at the facility where round-the-clock operations demand their presence.
OnSite Employer Testing coordinates mobile drug testing collections at your Gary-area facility, rail yard, or industrial site. We do not operate a clinic. Review how it works or browse all locations we serve.
Why Gary Employers Need Mobile Testing
Gary Works operates on a 24/7 production cycle. The Gary Railway Company runs its switching operation through the night with no downtime. Djuric Trucking dispatches heavy-haul loads at all hours. Pulling a safety-sensitive employee — a locomotive engineer, a plant CDL driver, a rail car mover operator — off the production floor to visit a clinic is not operationally viable in a steel mill environment. Post-accident testing under FRA 49 CFR Part 219 has mandatory time windows measured in hours; a clinic model cannot guarantee the response time a rail yard demands.
Northwest Indiana's steel and port corridor also concentrates a disproportionate share of FMCSA-regulated drayage carriers, PHMSA utility crews, and FAA-regulated aviation employees within a few square miles. Mobile collection serves all of them at their facility, on their schedule, without the productivity loss of a clinic trip in a region where shift changes happen around the clock.
Program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections.
Industries We Serve in Gary
Steel and Heavy Industrial
U.S. Steel Gary Works is one of the largest integrated steel mills in North America, employing thousands of workers in production, maintenance, and logistics roles. CDL-licensed plant drivers, crane operators, and rail car movers operating within the facility may be subject to FMCSA or company-policy Non-DOT testing programs depending on their specific roles and vehicle operations. We coordinate both DOT drug testing and Non-DOT workplace drug testing at industrial facilities throughout the Gary Works corridor and the broader northwest Indiana steel belt.
Railroad Switching and Rail Operations
The Gary Railway Company operates as a Class III switching carrier with 71 miles of track running 24/7/365 through the Gary Works complex, interchanging with Class I railroads including CSX, Norfolk Southern, CN, and Indiana Harbor Belt. Gary Railway employees — engineers, conductors, and maintenance-of-way workers — are covered employees under FRA 49 CFR Part 219 and must participate in random, post-accident, reasonable suspicion, and return-to-duty testing programs. The 24-hour operational tempo makes mobile collection at the rail yard or engine house the only practical model for timely testing. We coordinate FRA-compliant collections at rail facilities throughout the Gary area.
Heavy Trucking and Port-Adjacent Logistics
Djuric Trucking operates Gary-based FMCSA-regulated heavy-haul and flatbed operations with rail transport capability and port handling services from a secured facility. Swift Transportation maintains a Gary terminal serving the northwest Indiana freight corridor. FMCSA 49 CFR Part 382 pre-employment, random, and post-accident programs are standard requirements for these fleets. The Burns Harbor steel-port complex to the east adds port-adjacent drayage carriers and warehouse operators to the logistics and transportation testing pool. We coordinate collections at carrier terminals, fleet yards, and port-adjacent facilities throughout Lake County.
Aviation — Gary/Chicago International Airport
Gary/Chicago International Airport (GYY) supports cargo operations, corporate aviation, and Indiana Army National Guard aviation support missions. FAA 14 CFR Part 120 applies to air carriers and operators with safety-sensitive employees at the airport. Guard aviation support operations may be subject to military drug testing requirements separately from FAA civilian programs. We coordinate FAA-compliant aviation and airline employer collections at the airport and at employer facilities in the airport service area.
Pipeline, Utility, and Energy
NIPSCO operates gas and electric utility infrastructure throughout Lake County, placing field technicians and distribution workers under PHMSA 49 CFR Part 199 requirements. The northwest Indiana industrial corridor also includes pipeline and energy infrastructure serving the steel mills and port complex. We coordinate PHMSA-compliant collections at utility depots and field staging areas throughout the Gary and Hammond region. Energy and utilities contractors working in the broader Burns Harbor–Gary industrial belt are also within our service scope.
Testing Services Available in Gary
We coordinate the following collections for Gary-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
Communities We Serve Near Gary
In addition to Gary, we serve employers throughout Lake County and northwest Indiana including Hammond, East Chicago, Portage, Merrillville, Hobart, Griffith, Whiting, and the Burns Harbor industrial corridor.
The entire northwest Indiana steel and port belt — from the Illinois border east to Portage — is within our standard service range from our Rolling Meadows, IL hub. Use our instant quote calculator to scope your collection or visit our service areas page.
Questions from employers in this region
Gary Railway Company operates 24/7. Can you coordinate post-accident testing for FRA-covered employees at the rail yard at any hour?
FRA post-accident testing has mandatory time windows — typically within 4 hours for alcohol and 32 hours for drugs following a qualifying event. We coordinate emergency mobile collections on an expedited basis. For Gary Railway and similar 24/7 operations, we recommend establishing your contact protocol and facility access details in advance so that a post-accident response can be initiated immediately.
U.S. Steel Gary Works uses contractor fleets for raw material delivery. Does the contractor's DOT program satisfy our OSHA and plant access requirements?
A contractor's FMCSA 49 CFR Part 382 DOT program covers the contractor's CDL drivers for regulatory compliance, but it does not necessarily satisfy a host employer's Non-DOT company-policy program for plant access. Many large industrial sites require contractors to demonstrate Non-DOT testing compliance separately. Program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections for both DOT and Non-DOT programs.
Djuric Trucking operates heavy-haul flatbed loads out of Gary. What DOT testing is required for oversize/overweight CDL drivers?
Oversize and overweight permit loads do not create a separate DOT drug testing category — the driver is subject to standard FMCSA 49 CFR Part 382 requirements based on the vehicle's GVWR and commercial motor vehicle definition. All CDL drivers operating CMVs in interstate commerce must be enrolled in a compliant FMCSA random testing pool and complete pre-employment testing before their first safety-sensitive function. Program design and compliance obligations remain your responsibility — we coordinate the collections.
Does the Indiana Army National Guard aviation mission at Gary/Chicago International Airport require FAA drug testing compliance?
Military personnel at the Guard aviation facility are subject to Department of Defense drug testing requirements, not FAA Part 120. However, any civilian aviation employer — FBO operators, contract maintenance, charter operators — based at GYY with safety-sensitive employees is subject to FAA 14 CFR Part 120. We coordinate FAA-compliant collections for civilian aviation employers at the 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.
Scope collections for your Gary-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.