DOT CONSORTIUM ENROLLMENT - Big Oak Flat, CA

Random Drug & Alcohol Testing Program
FMCSA - FAA - USCG - FTA - FRA - PHMSA

All Random Test Fees Included


Our DOT Consortium Membership includes quarterly random selections, notifications by email & phone, testing site coordination, MIS reporting, and a Certificate of Compliance upon enrollment. Owner-operators DOT-regulated employers Certificate of Compliance.

  • We offer 1, 2 and 3 year memberships (multi-year discounts)
  • All random selection testing and testing fees included (no hidden costs)
  • MIS report at year-end and upon request
  • DER support, Clearinghouse assistance (FMCSA), DOT Physicals, MVR Reports & Supervisor Training

Why is a DOT Consortium Required?

Owner Operators- DOT requires all owner-operators to enroll in a consortium so they are included in a compliant random testing pool because they cannot randomly test themselves.

Small Employers-Some smaller companies may not have enough drivers or safety-sensitive employees to maintain their own statistically valid random pool. Therefore, by joining a consortium, they are combined with other companies to form a large pool that meets DOT testing requirements.

Large Employers-Larger fleets may manage their own random pool but often use a consortium/TPA to outsource the process, reduce administrative burden, and ensure strict compliance.

How Our DOT Consortium Works

Step 1: Enroll: Select a 1, 2, or 3 year membership and receive your Certificate of Compliance by email.

Quarterly Selections: We process our consortiums using a scientifically valid, computer-generated random draws each quarter.

Immediate Notifications: If selected, your DER receives email & phone notice with selection instructions.

Testing & Results: Visit the assigned testing center. ADT will manage CCFs, lab processing, and reporting.

MIS Reporting: Year-end and on-demand MIS reports included.

Included With Membership

  • All random selection test fees (drug & alcohol where applicable)
  • DER support & audit-ready documentation
  • Federal CCFs (5-part) for DOT drug tests
  • FMCSA Clearinghouse registration assistance
  • Policy templates (DOT Drug & Alcohol)
  • Supervisor reasonable-suspicion training options

36 DOT Drug-Testing Centers in Big Oak Flat

Minutes Away, Test Today

19747 Greenley Rd12.40 miles

19747 Greenley Rd
Sonora, CA 95370

1000 Greenley Rd12.41 miles

1000 Greenley Rd
Sonora, CA 95370

940 Sylva Lane, Suite # F212.86 miles

940 Sylva Lane, Suite # F2
Sonora, CA 95370

60 Copper Cove Dr20.60 miles

60 Copper Cove Dr
Copperopolis, CA 95228

5189 Hospital Rd27.03 miles

5189 Hospital Rd
Mariposa, CA 95338

2182 Highway 429.29 miles

2182 Highway 4
Arnold, CA 95223

1390 W H St Ste C33.24 miles

1390 W H St Ste C
Oakdale, CA 95361

768 Mountain Ranch Rd33.85 miles

768 Mountain Ranch Rd
San Andreas, CA 95249

333 Mercy Ave35.20 miles

333 Mercy Ave
Merced, CA 95340

394 E Yosemite Ave35.81 miles

394 E Yosemite Ave
Merced, CA 95340

3605 Hospital Rd Ste H36.19 miles

3605 Hospital Rd Ste H
Atwater, CA 95301

374 W Olive Ave Ste A36.82 miles

374 W Olive Ave Ste A
Merced, CA 95348

3070 M St Ste 1136.90 miles

3070 M St Ste 11
Merced, CA 95348

9000 Ahwahnee Dr37.63 miles

9000 Ahwahnee Dr
Yosemite National Park, CA 95389

5626 Heddon Ct38.04 miles

5626 Heddon Ct
Mariposa, CA 95338

510 W Main St Ste E38.13 miles

510 W Main St Ste E
Merced, CA 95340

911 E Tuolumne Rd38.24 miles

911 E Tuolumne Rd
Turlock, CA 95382

1801 Colorado Ave Ste 13038.30 miles

1801 Colorado Ave Ste 130
Turlock, CA 95382

1048 Geer Rd39.16 miles

1048 Geer Rd
Turlock, CA 95380

2000 Paulson Rd39.27 miles

2000 Paulson Rd
Turlock, CA 95380

1919 Vista Del Lago Dr39.58 miles

1919 Vista Del Lago Dr
Valley Springs, CA 95252

1340 Mitchell Rd39.95 miles

1340 Mitchell Rd
Modesto, CA 95351

1700 Coffee Rd40.62 miles

1700 Coffee Rd
Modesto, CA 95355

600 Coffee Rd40.92 miles

600 Coffee Rd
Modesto, CA 95355

2112 Mchenry Ave41.51 miles

2112 Mchenry Ave
Modesto, CA 95350

1524 Mchenry Ave Ste 16041.59 miles

1524 Mchenry Ave Ste 160
Modesto, CA 95350

1524 Mchenry Ave. Ste 120,41.59 miles

1524 Mchenry Ave. Ste 120,
Modesto, CA 95350

1524 Mchenry Ave Ste 50041.65 miles

1524 Mchenry Ave Ste 500
Modesto, CA 95350

1441 Florida Ave41.77 miles

1441 Florida Ave
Modesto, CA 95350

1541 Florida Ave Ste 10241.78 miles

1541 Florida Ave Ste 102
Modesto, CA 95350

400 12th St Suite 2342.11 miles

400 12th St Suite 23
Modesto, CA 95354

400 12th St Ste 2342.11 miles

400 12th St Ste 23
Modesto, CA 95354

1064 Woodland Ave Ste F43.42 miles

1064 Woodland Ave Ste F
Modesto, CA 95351

3125 Conant Ave43.81 miles

3125 Conant Ave
Modesto, CA 95350

4601 Dale Rd Fl 444.01 miles

4601 Dale Rd Fl 4
Modesto, CA 95356

223 Clinton Rd, Ste 20345.16 miles

223 Clinton Rd, Ste 203
Jackson, CA 95642

Agency Coverage & Current Minimum Random Rates

Percentages are set by each DOT agency and may change.

FMCSA: Federal Motor Carrier Safety Administration in Big Oak Flat, CA

Companies obligated by 49 CFR 382.305 must ensure a valid random testing program is maintained. Owner-operators in Big Oak Flat, CA and elsewhere must join a consortium pool consisting of at least two covered employees to comply with the regulations.

  • 50%- Controlled Substances (DOT 5-panel urine)
  • 10%- DOT Breath Alcohol Testing (BAT)
FMCSA Enroll Today

USCG: United States Coast Guard (now under Homeland Security)
Marine employers based in Big Oak Flat, CA or elsewhere who are under 46 CFR Part 16.230 must carry out random drug tests for all safety-sensitive crew members as a measure of safety and legal compliance.

  • 50%- Controlled Substances are evaluated through a DOT 5-panel urine test to maintain the integrity of marine operations.
  • Alcohol is not a requirement under the USCG random minimum standards, reflecting their focus primarily on drug testing initiatives.
USCG Enroll Today

FAA: Federal Aviation Administration

Under 14 CFR Part 120, employers are mandated to include all safety-sensitive functions in their testing programs. This encompasses those responsible for the safe operation of aircraft and maintenance activities.

  • 25%- Controlled Substances (DOT 5-panel urine)
  • 10%- Breath Alcohol Testing (BAT)

Big Oak Flat, CA, with its unique aviation landscape including small airports and general aviation activities, must comply with these rigorous testing standards for enhanced safety.

FAA Enroll Today

FRA- Federal Railroad Administration

The Federal Railroad Administration requires railroads to craft and execute an FRA-approved random testing plan according to 49 CFR 219.601-219.609. For rail operations within Big Oak Flat, CA, this compliance is a key element in fostering a safe and reliable rail transport environment.

Employee Category Drugs Alcohol
Covered Service 25% 10%
Maintenance of Way / Roadway Workers 25% 10%
Mechanical 50% 25%
FRA Enroll Today

FTA- Federal Transit Administration

FTA: Federal Transit Administration

Employers under the purview of 49 CFR Part 655 must employ scientifically valid selection methods for random drug and alcohol testing programs. This mandate is especially relevant in Big Oak Flat, CA, where public transit systems contribute to the regional connectivity amid challenging weather and geographical conditions.

  • 50%- Drugs
  • 10%-  Alcohol
FTA Enroll Today

PHMSA- Pipeline & Hazardous Materials Safety Administration

PHMSA: Pipeline and Hazardous Materials Safety Administration

Operators guided by Parts 192, 193, or 195 must test covered employees as specified in 49 CFR Part 199. This regulation ensures safety and operational integrity, which is paramount in Big Oak Flat, CA given its expansive and often delicate ecosystems that could be impacted by pipeline operations.

  • 50%-Drugs
  • Alcohol- N/A (no PHMSA random alcohol minimum)
PHMSA Enroll Today

Who Must Be in a DOT Random Program?

  • Truck drivers (CDL) & motor carriers
  • Train engineers, conductors, dispatchers
  • Merchant mariners & marine employers
  • Airline pilots, flight attendants, mechanics, ATC
  • Pipeline operations, maintenance & emergency response
  • Transit operations, maintenance & certain CDL roles

Owner-Operators , Small, Medium & Large Employers

Joining our DOT consortium is the fastest way to achieve immediate compliance. We provide the Certificate of Compliance, random selections, MIS reports and testing coordination.

ENROLL TODAY

Complete Compliance Package for Independent Operators & Small Companies

  • 1 DOT Drug Test
  • First-year Consortium membership (all randoms included)
  • 1 Supervisor training (reasonable suspicion)
  • 1 DOT Drug & Alcohol Policy
  • 1 Certificate of Compliance

Need more tests? Additional DOT drug tests can be added at a discount.

Enroll Today! (800) 221-4291

Enroll in the DOT Consortium

Enroll Today

Immediate compliance for DOT random testing. Perfect for owner-operators and employers of any size.

  • Quarterly random selections & notifications
  • All random test fees included
  • MIS reporting & audit support
  • CCFs, policy templates, DER guidance

Are there penalties for non compliance?

Failing to comply with DOT drug and alcohol testing requirements can result in severe consequences for both employers and drivers, including:

  • Quarterly random selections & notifications
  • All random test fees included
  • MIS reporting & audit support
  • CCFs, policy templates, DER guidance

DOT Consortium: Frequently Asked Questions

What is a DOT Consortium (C/TPA) and who needs it?

Answer: A consortium C/TPA acts as a service agent managing part or all of an employer's drug and alcohol testing responsibilities, including setting up random testing pools and ensuring compliance according to 49 CFR part 40.

Are random testing percentages always the same or do they change?

Answer: The DOT can adjust random testing percentages annually based on the positivity rate. Regardless, in our consortium, all random testing fees, irrespective of the rate, are covered.

What happens when I am selected for a random test?

Answer: ADT informs the company DER or Owner Operator through email or phone specifying the nearby testing location and instructions. The selected employee is required to report promptly to the test center following notification.

What drugs are tested on a DOT drug test?

Answer: A DOT drug test involves a DOT 5 panel urine examination and a DOT breath alcohol evaluation, ensuring all tests are carried out on a Federal CCF and Federal Alcohol Testing Form.

Can you help during a DOT audit or inspection?

Answer: Yes, ADT offers support by organizing the necessary paperwork, including pre-employment tests, proof of random pool enrollment, supervisor training certificates, and DOT policy developments.

How often can I update my employee pool?

Answer: Employee roster updates are confirmed quarterly. Employers can add or remove covered employees anytime before selection dates.

Find a DOT Drug Test Center Near You

Enter your zip code to find nearby test centers

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Big Oak Flat Hair Drug Testing

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Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Big Oak Flat, CA.

Big Oak Flat Drug Testing Services

Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Big Oak Flat, CA.

Big Oak Flat 5 Panel Drug Test

Accurate 5 panel drug testing with fast, confidential results—trusted by Big Oak Flat, CA employers and individuals nationwide.

Big Oak Flat 10 Panel Drug Test

Comprehensive 10 panel drug testing with fast, reliable results—trusted for Big Oak Flat, CA workplace and personal testing needs.

Big Oak Flat On Site Drug Testing

Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Big Oak Flat, CA workplace compliant.

Big Oak Flat DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Big Oak Flat, CA drivers compliant and on the road with confidence.

DOT Consortium

Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.


Frequently Asked Questions

A DOT Consortium is a program that manages random drug and alcohol testing for DOT-regulated employers and owner-operators. It ensures compliance with federal testing requirements by maintaining a random selection pool, managing notifications, and handling test scheduling and reporting.
All employers and owner-operators who fall under DOT agency regulations — including FMCSA, FAA, FTA, FRA, PHMSA, and USCG — must participate in a random drug and alcohol testing program. Owner-operators must join a third-party consortium to meet compliance standards.
Enrollment includes participation in a DOT-approved random testing pool, random drug and alcohol tests, test scheduling, employee notifications, Certificate of Compliance, and annual MIS reporting. Accredited Drug Testing also provides program administration, policy assistance, and ongoing compliance support.
Enrollment can be completed online at accrediteddrugtesting.com by selecting the DOT Consortium Enrollment option, or by calling (800) 221-4291. Once enrolled, participants receive immediate documentation and compliance materials.
Each enrolled company or owner-operator receives a Certificate of Compliance, MIS reports, and other documentation verifying participation in a DOT-compliant random testing pool. These records help demonstrate compliance during DOT audits or inspections.
Yes. Accredited Drug Testing’s consortium program automatically manages all random selections and notifications. When a driver or employee is selected, Accredited coordinates testing at a nearby collection site and provides results reporting and recordkeeping.

Customer Reviews

Excellent service!

Excellent service! Trish went above and beyond to find me a testing site as close to my home as possible. Results were faster than expected, as well. Thanks for your help, Trish and Accredited!

Es Hache - 4/13/2025

Super Easy!

Super easy to set up an appointment through the phone. They walked me through all the steps and found me a location right near my house. Would definitely recommend!

Aldita Lumaj - 1/17/2025

Excellant Performance

The visit here is always the best . The place is always really clean. The employees are super courteous, very polite, and professional. This is the only drug lab I like to go do my drug and alcohol test. I would like to tell them thank you so much for thier excellent performance and job

Eli Gonzalez - 1/4/2025

ADT is truly the best

Where do I start?!! ADT is truly the best!! I had the pleasure of speaking with Tori today! She was excellent, professional and truly went above and beyond in her kind, compassionate care and commitment to providing me with the best service possible. I was in such a time crunch, but I was able to call, order the test, pay for it over the phone and get the test I needed within the hour. Not only did this put my mind at ease, they saved my job!! I am forever grateful for this team of hard workers, that care, with such great work ethics! Thank you from the very bottom of my heart!!! If you need a drug, alcohol, etc… screening, this team will be your lifesavers!!

Sarah Patterson - 4/8/2025

Friendly and Knowledgeable

I reached out Accredited Drug Testing/Secure Screenings to partner for my drug testing business (Discovery Diagnostics Columbia SC) and the process was extremely easy. I worked with Sicilia who was amazing. She was friendly & knowledgeable, and answer all of my questions with ease.

Kendra Harley - 3/26/2025

Super Easy to Schedule

Super easy to schedule and get what you need, weather for a job, personal, or court ordered! I believe I spoke with Justine who was helpful in answering all my questions and stayed on the phone with me until she was sure I was all set and got the emails I needed.

Mandy Ryan - 12/14/2024

Extremely pleasant

Initially Torrie helped me but I needed to call back. When I called back Kayla stepped in and finished my order. Both were extremely pleasant over the phone and provided wonderful customer service. Kudos to them!

Brynne Beverly - 4/19/2024

Very professional and very quick

Very professional and very quick service to schedule appointments! I am pleased with the services and would definitely recommend using them for any drug testing needs!

Carrie Feerick - 4/19/2025

This is by far the easiest

This is by far the easiest way to get my lab work ordered and paid for. The phone calls are short and to the point. They don’t try to push extra sales on you and when I walk in to the clinic I simply show my donor pass and with in a matter of minutes I’m done. I will continue to use ADT in the future.

Jason Jackson - 7/19/2025

Quick, knowledgeable and courteous

Quick, knowledgeable and courteous Janelle worked diligently to support me. I am recommending their services to anyone looking.

Greensboro Joseph - 11/19/2024


(800) 221-4291