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DOT-Compliant C/TPA Services — Northern California

DOT Drug Testing
& Compliance
Done Right.

Full-service Third Party Administration for drug & alcohol testing, random pool management, FMCSA Clearinghouse, DQ files, and SAP/Return-to-Duty — serving Humboldt County, Northern California, and owner-operators nationwide.

Compliance Dashboard
Random Pool Status Active
Annual Random Rate (FMCSA) 50% Drug / 10% Alc
Clearinghouse Query Current
MRO Review Certified
Fleet Compliance Rate 94%
Authorized Under
FMCSA / 49 CFR Part 382
PHMSA / Pipeline Operators
FTA / Transit Agencies
FAA / Aviation
SAMHSA-Certified Labs
FMCSA Clearinghouse Registered

End-to-End TPA
Services

From enrollment through RTD, we handle every step of your DOT compliance program.

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Pre-Employment Drug Testing

DOT and non-DOT pre-employment screens through SAMHSA-certified labs. Fast turnaround, chain-of-custody management, and MRO sign-off included.

📞 Call✉️ Email
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Driver Qualification Files

Complete DQ file creation, management, and annual review for your CDL drivers — keeping you audit-ready at all times under 49 CFR Part 391.

📞 Call✉️ Email
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SAP & Return-to-Duty

Substance Abuse Professional coordination and full Return-to-Duty follow-up testing program management from initial violation through clearance.

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Non-DOT Workplace Testing

Custom drug-free workplace programs for safety-sensitive positions outside of DOT jurisdiction. One-time pre-employment or ongoing random pools available.

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Background Checks

MVR (Motor Vehicle Records), employment verification, criminal background, PSP reports, and residential/landlord history — all in one place.

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California SB 88 & AB 2188 Compliance

California-specific non-DOT drug-free workplace guidance for employers navigating SB 88 cannabis workplace policies and AB 2188 impairment-based testing. We help California employers stay compliant while protecting safety-sensitive roles.

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Drug & Alcohol Company Policy

Don't have a written DOT-compliant drug and alcohol policy? We'll draft a complete, legally compliant policy document tailored to your company and modal authority.

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We Speak
DOT Fluently.

01

DER Support Included

Your Designated Employer Representative gets direct access to guidance on violations, notifications, and corrective actions — no extra fees.

02

Nationwide Collection Site Network

Thousands of SAMHSA-approved collection sites across the country accessible for your drivers wherever they're operating.

03

Real-Time Clearinghouse Compliance

We handle annual general queries, pre-employment limited queries, and violation reporting directly to the FMCSA Drug & Alcohol Clearinghouse.

04

Boutique Service at TPA Scale

Unlike the national TPAs, you get a real person who knows your fleet, not a ticket number in a queue.

How Enrollment Works

1
Submit your company info & driver roster via our enrollment form
2
We enroll you in the appropriate consortium & random pool
3
Clearinghouse registration & initial query completed
4
Certificate of compliance issued; random draws begin
5
Ongoing records management, DER support, and renewals handled for you
49 CFR
Part 40 Compliant
48hr
Avg Result Turnaround
All 6
DOT Modal Authorities
100%
SAMHSA-Certified Labs

Straightforward Service.
Honest Quotes.

Every operation is different. Call or email us and we'll give you a straight quote — no runaround, no hidden fees.

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Owner / Operator
  • C/TPA consortium enrollment
  • Random pool management
  • Clearinghouse annual query
  • Certificate of compliance
  • MRO-reviewed results
  • DER support & guidance
📞 Call for a Quote✉️ Email for a Quote
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Large Fleets & Enterprise
  • Everything in Small Fleet
  • Multi-modal authority support
  • Non-DOT program integration
  • SAP/RTD coordination
  • Priority DER hotline
  • Quarterly compliance reviews
📞 Call for a Quote✉️ Email for a Quote
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Pre-Employment DOT Test
One-time test, no enrollment
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Non-DOT Drug Test
Lab-based, FED mirror panel
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RTD / Follow-Up / Observed
Return-to-duty testing
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Drug & Alcohol Policy
Written company policy document

Trusted by Fleets
Across the Country

From single owner-operators to multi-state carriers — here's what our clients say.

FMCSA · Owner-Op
★★★★★

"Before Green Light, I had no idea I was out of compliance on my Clearinghouse queries. They got me enrolled, ran my back-queries, and had me squared away in less than a week. Worth every penny of the $350."

RM
Ray M.
Independent Owner-Operator · 1 truck
FMCSA · Fleet
★★★★★

"We switched from a national TPA that treated us like a number. Green Light actually calls us when a random selection comes in and walks us through each step. Our DER finally understands the process."

SC
Sandra C.
Safety Director · 8-driver fleet
Non-DOT · Construction
★★★★★

"We needed a drug-free workplace policy built from scratch for a new client contract. Green Light had us set up with pre-employment testing and a non-DOT random pool in three days. Fast and professional."

TW
Tom W.
Operations Manager · General Contractor
FMCSA · RTD
★★★★★

"Had a driver test positive and I had no idea what to do next. Green Light walked me through the whole SAP process, coordinated the follow-up testing schedule, and got him cleared to return to duty cleanly and by the book."

DL
Dave L.
Fleet Manager · Refrigerated Carrier
PHMSA · Pipeline
★★★★★

"Most TPAs only know FMCSA. We operate under PHMSA and needed someone who actually understood pipeline operator requirements under 49 CFR Part 199. Green Light knew exactly what we needed."

JK
Jake K.
Compliance Officer · Pipeline Operator
FMCSA · DQ Files
★★★★★

"An FMCSA audit found our DQ files were a mess — missing annual reviews, expired MVRs, the works. Green Light rebuilt every file, brought us current, and set up a calendar so it never happens again."

MR
Maria R.
Owner · 5-truck Hotshot Operation

Straight
Answers.

DOT compliance is complicated enough. We keep it plain.

Still have questions? Ask us.
Yes. If you hold a CDL and operate a CMV under your own FMCSA authority, you are required under 49 CFR Part 382 to be enrolled in a DOT-compliant drug and alcohol testing program. Because you cannot test yourself, you must join a consortium through a C/TPA like Green Light. You also need active FMCSA Clearinghouse registration and an annual general query run by a C/TPA.
A consortium pools your drivers with drivers from other companies to meet the FMCSA's random testing rate (currently 50% for drugs, 10% for alcohol). This is the most cost-effective option for small fleets and owner-operators. A standalone program keeps your drivers in a private pool — typically used by larger fleets who have enough drivers to meet the required random rates on their own.
As of January 6, 2020, all FMCSA-regulated employers must query the Drug & Alcohol Clearinghouse before hiring a CDL driver (limited pre-employment query) and run an annual general query for every driver on their roster. They must also report any violations into the Clearinghouse. Green Light handles all of this on your behalf as part of your C/TPA enrollment — registration, queries, and violation reporting.
The driver must be immediately removed from safety-sensitive duties. As your C/TPA, we notify you, report the violation to the Clearinghouse (if FMCSA), and guide your DER through the required steps. The driver cannot return to duty until they complete SAP evaluation, any recommended treatment, and a Return-to-Duty test — all of which we can coordinate and manage for you.
Most enrollments are completed within 1–2 business days. Submit your company info and driver roster using our contact form, and we'll handle the rest — consortium enrollment, Clearinghouse setup, and issuance of your certificate of compliance.
Absolutely. We offer non-DOT pre-employment drug screens, non-DOT random pools, and custom drug-free workplace programs for any safety-sensitive industry — construction, warehousing, manufacturing, healthcare, and more. Non-DOT programs use the same SAMHSA-certified labs and MRO review as our DOT programs.
We provide access to a nationwide network of thousands of SAMHSA-approved collection sites — urgent care clinics, occupational health centers, and dedicated collection facilities. We'll help your drivers find the most convenient location wherever they're operating, and coordinate chain-of-custody documentation from collection through MRO review.

Ready to Get
The Green Light?

Fill out the form and we'll reach out within one business day to complete your enrollment and get your compliance program running.

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Location
McKinleyville, CA 95519
Serving Humboldt County & NorCal
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Hours
Mon–Fri, 8:00am – 5:00pm PT
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Enrollment Inquiry
Tell us about your operation and we'll tailor the right program.
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You're on your way!

We received your inquiry and will reach out within one business day to finalize your enrollment. Keep an eye on your inbox.

Still on the fence?

One call. Full clarity.

No pressure. We'll tell you exactly what your operation needs to be compliant — for free.

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