DOT · NON-DOT · CONSTRUCTION EMPLOYER TESTING
Charleston, SC Mobile Drug & Alcohol Testing
Port of Charleston USCG · Boeing North Charleston FAA · BNSF/CSX FRA · CHS Airport FAA · I-26 FMCSA — Mobile collections at America's fastest-growing port.
The Port of Charleston has become one of the most strategically important ports in the United States — recently surpassing Baltimore and other East Coast ports in growth rate, with the deepened harbor now accommodating the world's largest post-Panamax vessels. Every container terminal worker, drayage driver, and marine employee operates under USCG and FMCSA obligations. Boeing's North Charleston campus produces the 787 Dreamliner — thousands of FAA-regulated mechanics, engineers, and technicians work on the flight line daily. BNSF and CSX both serve the port corridor. Charleston International Airport (CHS) handles growing commercial and military aviation. Joint Base Charleston adds a defense contractor dimension. OnSite Employer Testing dispatches certified collectors to port terminals, Boeing facilities, rail yards, and airport operations throughout Charleston County.
OnSite Employer Testing coordinates mobile drug testing collections at your Charleston-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.
America's Fastest-Growing Container Port — and Its Compliance Demands
DOT & Non-DOT Testing Services — Charleston
We coordinate the following collections for Charleston-area employers:
- USCG 46 CFR Part 16 — Merchant mariners, towing vessel crew, and container terminal workers at Port of Charleston Wando Welch, North Charleston, and Columbus Street terminals
- FAA 14 CFR Part 120 — Boeing 787 Dreamliner A&P mechanics, quality inspectors, flight operations crew, and ramp personnel at Boeing South Carolina and Charleston International Airport (CHS)
- FRA 49 CFR Part 219 — BNSF and CSX engineers, conductors, and MOW employees serving the Port of Charleston rail corridor
- FMCSA 49 CFR Part 382 — CDL port drayage drivers and I-26, I-526, and US-17 OTR and regional fleets serving the port complex
- Federal contractor testing — Joint Base Charleston Air Force and Navy support contractors under FAR 52.223-6 and DoD requirements
- Pre-employment, Random, Reasonable Suspicion, Post-Accident — urine, oral fluid, and EBT
- DOT Return-to-Duty & Follow-Up — SAP-supervised employees across all modes
- Boeing supply chain panels — Tier 1/Tier 2 aerospace parts manufacturers in the Charleston metro
- Construction sector — Charleston harbor deepening contractor workforce and Lowcountry infrastructure projects
- Hair follicle and instant-result screening for rapid port and aerospace hiring
Industries Served in Charleston
- Port and maritime — Port of Charleston Wando Welch Terminal, North Charleston Terminal, container drayage
- Aerospace manufacturing — Boeing South Carolina 787 Dreamliner plant
- Aviation — Charleston International Airport (CHS), Joint Base Charleston
- Railroad — BNSF and CSX port rail corridor
- Defense contracting — Joint Base Charleston Air Force/Navy support
- CDL freight — I-26, I-526, port approach roads
- Construction — harbor deepening, Lowcountry infrastructure
- Healthcare — MUSC Health, Roper St. Francis
- Hospitality and tourism — Historic District, waterfront hospitality
Applicable Regulations — Charleston, SC
USCG 46 CFR Part 16 governs merchant mariners at the Port of Charleston — one of the fastest-growing container port workforces on the East Coast. FAA 14 CFR Part 120 applies to Boeing South Carolina's FAA safety-sensitive employees — the largest single-site 787 production workforce in the world. FRA 49 CFR Part 219 covers BNSF and CSX port corridor crews. FMCSA 49 CFR Part 382 governs CDL drayage and freight fleets. Federal contractors at Joint Base Charleston are subject to FAR 52.223-6. South Carolina has not legalized recreational cannabis — but 49 CFR Part 40 applies to all DOT-regulated employees regardless. Program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections.
On-Site Collections in Charleston
Port of Charleston, Boeing 787, Joint Base Charleston, BNSF/CSX, and I-26 carriers — get compliant mobile collections dispatched across Charleston County today.
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 serve Boeing South Carolina's A&P mechanics and production workforce directly?
Yes. We dispatch to Boeing South Carolina facility gates and designated collection areas. Pre-employment, random, and post-accident collections are all available for Boeing's FAA-regulated and non-DOT workforces.
Do you handle USCG collections for Port of Charleston terminal and vessel crew?
Yes. We coordinate USCG 46 CFR Part 16 compliant collections for merchant mariners and terminal workers throughout the Port of Charleston complex.
Can you serve the port drayage CDL corridor on I-26 and I-526?
Yes. We dispatch to staging areas, trucking company yards, and port approach facilities throughout Charleston County for FMCSA CDL driver collections.
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 Charleston's Port, Boeing, and Multi-Modal Workforce
Port of Charleston, Boeing 787, Joint Base Charleston, BNSF/CSX, and I-26 carriers — get compliant mobile collections dispatched across Charleston County today.