California's Premier Agricultural & Logistics Hub Deserves California's Best Mobile CARB Testing

We Come To You • Same-Day Service Available • No Travel Fees

Fast Quote – Text or Call: 916-890-4427

OBD Testing (2013+ trucks): $75
J1667 Smoke Testing (2012 & older): $250
Motorhome Testing: $300

Fleet Discounts Available • No Hidden Fees • 7 Days a Week

Complete Coverage Across San Joaquin County & Central Valley

Primary Service Area (No Travel Fees):

Stockton • Tracy • Lathrop • Lodi • Manteca • Ripon • Escalon • French Camp • Modesto • Turlock • Ceres • Riverbank • Oakdale • Merced • Livingston • Patterson • Waterford • Salida • Hughson

We serve the entire Central Valley from Sacramento to Fresno

Why Central Valley Trucking Operations Trust NorCal CARB Mobile

When your diesel truck, agricultural fleet, or commercial vehicle operates in California's most productive agricultural region, CARB compliance isn't optional—it's the license to operate that keeps your business moving.

NorCal CARB Mobile brings certified CARB Clean Truck Check testing directly to your location across San Joaquin County and the Central Valley corridor, from the massive logistics centers of Lathrop and Tracy to the agricultural heartland of Modesto, Turlock, and Merced.

Central Valley's Unique CARB Testing Challenges—Solved

Agricultural Fleet Operations

San Joaquin County produces $3.2+ billion in annual agricultural output—ranking 7th statewide—with nearly 3,000 farms producing over 300 diverse commodities. Your agricultural operation depends on compliance:

Dairy Transport Trucks: San Joaquin County leads California with 150+ dairy farms producing $536+ million annually. Milk trucks, cattle haulers, and feed delivery vehicles require biannual J1667 Smoke Testing to maintain route schedules.

Harvest Equipment Haulers: From $343 million in almonds to $421 million in wine grapes, cherry orchards, walnut groves, and tomato fields—harvest season means F550s, F650s, and semi-trucks moving constantly. We test on-site so harvest doesn't stop.

Cattle & Livestock Haulers: With 135,000 head of cattle and $165+ million in cattle production, livestock transport runs 24/7. Highway 99 between Stockton and Modesto sees constant cattle truck traffic—we test at your ranch, feedlot, or truck yard.

Farm Equipment Transport: Moving tractors, combines, and processing equipment between operations requires heavy-duty diesel trucks over 14,000 GVWR. We come to your farm shop or equipment yard.

Logistics & Warehouse Distribution Fleets

The Stockton-Tracy-Lathrop corridor has exploded into Northern California's premier logistics hub with strategic access to:

• Port of Stockton – Deep-water port connecting Central Valley to global markets

• Stockton Metro Airport – Cargo-centric operations

• I-5, I-205, I-580, Highway 99 – Direct freeway access to Bay Area, Sacramento, Southern California

• BNSF & Union Pacific intermodal facilities – Rail-to-truck transfer operations

Major Distribution Operations in Our Service Area:

Amazon (3 fulfillment centers in Tracy, Stockton, Manteca), Ashley Furniture, Medline, Lowe's, John Deere, UPS, Ryder—supporting 20,000+ warehouse and logistics workers who depend on compliant fleets.

Your logistics fleet runs on tight delivery schedules. We test during loading hours, shift changes, or scheduled downtime—no appointment at a distant testing station required.

Major Truck Stop Corridor Compliance

I-5 & Highway 99 Truck Stop Hubs:

Lodi – I-5 Exit 485:

• Flying J Travel Center (15100 N Thornton Rd) – 24/7 operations, 200+ truck parking

• Love's Travel Stop – Diesel lanes, CAT scales, driver amenities

• Prime location for long-haul fleet testing before or after California runs

Stockton – I-5 Exits 471-468:

• TA Travel Center (Charter Way)

• French Camp truck services corridor

• We test at your overnight parking spot while you rest, shower, or refuel

Lathrop – I-5 Exit 465:

• Major truck stop and distribution nexus

• Amazon, Costco, and logistics warehouses within 5 miles

• We test during dock loading times to maximize uptime

Ripon – Highway 99 Exit 237:

• Love's Travel Stop (1553 Colony Rd)

• Agricultural and long-haul convergence point

• On-site testing while drivers take DOT-required breaks

Mobile CARB Testing Services for Every Central Valley Operation

J1667 Smoke Opacity Testing

Required for: 2012 and older diesel trucks over 14,000 lbs GVWR

• Agricultural semi-trucks and grain haulers

• Livestock transport and cattle trucks

• Concrete mixers and construction fleets

• Dump trucks and heavy equipment haulers

• Long-haul semi-trucks and owner-operators

• Motorhomes and Class A RVs with diesel engines

Pricing: $250 per truck – No travel fees within 35-mile radius of service area

OBD (On-Board Diagnostics) Testing

Required for: 2013+ model year diesel trucks

• Modern agricultural fleets with DPF/DEF systems

• Warehouse delivery trucks (Amazon, UPS, FedEx)

• Food processing transport (cold chain logistics)

• Wine distribution and beverage delivery

• Construction and contractor fleets

Pricing: $75 per truck – Fleet discounts available

Fleet Testing Programs

Small Fleet (2-5 trucks): Scheduled biannual testing with automatic reminders

Medium Fleet (6-15 trucks): Volume discount pricing, priority scheduling

Large Fleet (16+ trucks): Custom compliance management, dedicated service windows

We coordinate with your dispatch, operations managers, and maintenance schedules to minimize downtime. Test during:

• Weekend shifts when trucks are parked

• Seasonal slowdowns (post-harvest, winter operations)

• Scheduled maintenance windows

• Driver shift changes

Motorhome & RV Testing

Central Valley is RV country with direct access to Yosemite, Lake Tahoe, wine country, and coastal destinations. Pre-1997 diesel motorhomes require CARB testing every 2 years.

Pricing: $300 per motorhome – We come to your storage facility, driveway, or RV park

Why Mobile Testing Dominates Fixed Station Testing for Central Valley Operations

Traditional Testing Station Problems:

• Lost productivity: Drive 30-60 minutes each way to testing station

• Appointment scheduling: 2-3 week wait times during harvest season

• Inflexible hours: Most stations close by 5 PM, not open weekends

• Fleet logistics nightmare: Coordinate multiple trips for multi-truck operations

• Harvest season delays: When you need testing most, stations are booked solid

NorCal CARB Mobile Solutions:

• Zero travel time: We drive to your location—you keep working

• Same-day/next-day availability: No multi-week wait times

• 7-day service: Including weekends and evenings when needed

• Fleet efficiency: Test 5, 10, or 20 trucks in a single visit

• Harvest season priority: We scale capacity during peak ag seasons

Transparent Pricing—No Hidden Fees, No Surprises

Standard Mobile Testing Rates:

OBD Testing (2013+ trucks): $75 per vehicle
J1667 Smoke Testing (2012 and older): $250 per vehicle
Motorhome Testing: $300 per RV

Small Fleet (2-5 trucks): 10% discount on total invoice
Medium Fleet (6-15 trucks): 15% discount + priority scheduling
Large Fleet (16+ trucks): 20% discount + custom service agreement

No Hidden Charges:

• No travel fees within 35-mile radius of Stockton-Modesto corridor

• No "after hours" surcharges for evening or weekend service

• No "emergency" fees for same-day or next-day testing

• No "harvest season" price increases during peak agricultural periods

Central Valley Agricultural Compliance Expertise

We Understand Your Operation

Dairy Operations: Testing milk trucks, cattle haulers, feed delivery during non-milking hours

Orchard & Vineyard Operations: Harvest haulers, cold storage transport, processing facility trucks

Row Crop Farms: Tomato haulers, grain trucks, equipment transport during planting/harvest

Livestock Ranches: Cattle trucks, hay haulers, veterinary supply vehicles

Food Processing: Cold chain logistics, cannery trucks, distribution fleets

Wine Industry: Grape haulers, barrel transport, tasting room delivery trucks

We know that in agriculture, timing is everything. CARB testing doesn't stop for harvest—but we make sure testing never stops your harvest.

Logistics & Warehouse Fleet Specialization

The Stockton-Tracy-Lathrop logistics explosion has created 20,000+ transportation and warehouse jobs. Your distribution operation depends on:

Scheduled Testing During Dock Time: Test trucks while loading/unloading

Shift Change Coordination: Test between driver shifts without downtime

Weekend & After-Hours Service: We match your 24/7 operation schedule

Fleet Compliance Tracking: Automated reminders for biannual requirements

Multi-Location Service: We test at warehouse A, B, and C on the same day

Prime Service Locations:

• Tracy Amazon Fulfillment Centers (Patterson Pass Road, MacArthur Drive)

• Stockton Airport Logistics Parks (French Camp, Newcastle Road)

• Lathrop Distribution Centers (I-5/I-205 corridor, Louise Avenue)

• Manteca Warehouse District (Highway 120/99 junction)

Long-Haul Owner-Operators & Truck Stop Services

Driving I-5 or Highway 99 through Central Valley? California CARB requirements apply to every diesel truck over 14,000 lbs operating in California—even if you're based in Oregon, Nevada, or Arizona.

Truck Stop Testing Services:

Flying J Lodi (I-5 Exit 485): Park overnight, we test while you sleep or shower

Love's Lodi (I-5 Exit 485): Test during your 10-hour break

Stockton TA Travel Center: Coordinate with fuel stop and meal break

French Camp Corridor: Multiple testing opportunities along I-5

We save you:

• Hours of routing to testing stations off your planned route

• Compliance violations from expired CARB certifications

• Re-inspection fees from failed roadside checks

Text or call ahead: We'll meet you at your planned truck stop with same-day or next-day service.

Automated Compliance Management—Never Miss a Deadline

Our Biannual Reminder System:

Once you become a NorCal CARB Mobile customer, we automatically track your compliance schedule:

6-Month Email Reminders: Sent 30 days before your next testing due date

Text Message Alerts: Sent 14 days before deadline

Personal Follow-Up Calls: For fleet managers with multiple trucks

Seasonal Coordination: We schedule around harvest, planting, and peak logistics seasons

Preparing for 2027 Quarterly Testing Requirements:

CARB regulations are tightening to quarterly testing requirements by 2027. We're building our infrastructure now to handle:

• 4x annual testing volume across all agricultural and logistics fleets

• Streamlined 15-minute testing to minimize operational impact

• Digital compliance dashboards for fleet managers

• Automatic scheduling every 90 days

Join now and we'll grandfather you into preferential scheduling when quarterly testing begins.

Customer Rewards & Referral Program

We Appreciate Your Business:

Referral Rewards: Earn $10 digital gift card for every new customer you refer who completes paid service

Monthly Raffle: All customers automatically entered into Yeti Mug monthly giveaway

Loyalty Discounts: After 5 tests, receive 10% off your next service

Fleet Manager Perks: Manage 10+ trucks? Receive exclusive offers and priority service

Real Stories from Central Valley Operations

Banwait Trucking – Stockton

"8:30 PM on the last day of the month—we were facing a compliance deadline that could have shut us down. NorCal CARB Mobile drove over an hour to reach us, completed testing that night, and charged standard rates. No rush fees, no emergency surcharges. That's the kind of partner our business needs."

The Plaster Group – Sacramento County

"Our F550 fleet needed Friday afternoon testing to stay compliant for Monday projects. Every other testing service said 'next week.' NorCal CARB Mobile came to our yard, tested our entire fleet, and we were certified before the weekend. Construction schedules don't pause—and neither do they."

Why NorCal CARB Mobile Is Central Valley's Number One Choice

Agriculture Expertise

We understand dairy schedules, harvest timing, livestock transport, and seasonal demands. Testing that fits farm life, not disrupts it.

Logistics Specialization

Amazon fulfillment deadlines, Costco delivery windows, warehouse dock schedules—we coordinate with your operations, not against them.

Truck Stop Convenience

Overnight at Flying J Lodi? Fueling at Love's Ripon? We meet you where you park, saving hours of off-route driving.

Transparent Pricing

$75 OBD. $250 J1667. $300 Motorhome. No hidden fees. No surprise charges. Ever.

Flexible Scheduling

7 days a week. Evenings available. Same-day service when possible. Your schedule drives our schedule.

CARB Certified & Insured

Fully credentialed California Air Resources Board Clean Truck Check testers. Licensed, bonded, and insured for commercial operations.

Frequently Asked Questions – Central Valley CARB Testing

Do I need CARB testing if my truck is registered out of state?

Yes. Any diesel truck over 14,000 lbs GVWR operating in California must comply with CARB Clean Truck Check requirements—regardless of registration state. This includes Oregon, Nevada, and Arizona-based trucks running California agricultural or logistics routes.

How often do agricultural trucks need CARB testing?

Currently: Every 2 years (biannual) for most diesel trucks. Changing to quarterly (every 90 days) by 2027 under new CARB regulations. We'll automatically notify you of schedule changes.

Can you test my entire fleet in one visit?

Absolutely. We routinely test 5-20 trucks in a single service visit at fleet yards, distribution centers, and agricultural operations. We coordinate with your operations manager to minimize downtime.

Do you service truck stops along I-5 and Highway 99?

Yes. We provide on-site testing at Flying J Lodi, Love's Lodi, Stockton TA, French Camp corridor, and Ripon Love's. Text ahead and we'll coordinate with your overnight stop or fuel break.

What happens if my truck fails CARB testing?

We provide detailed diagnostic readout showing exactly what failed. For minor issues (loose gas cap, temporary sensor error), we can often resolve on-site and re-test immediately. For major issues (DPF failure, emission system malfunction), we provide referrals to trusted diesel mechanics in your area.

How long does testing take per truck?

OBD Testing: 10-15 minutes per truck
J1667 Smoke Testing: 20-30 minutes per truck
Motorhomes: 30-45 minutes depending on engine access

For fleets, we can test 4-6 trucks per hour with efficient scheduling.

Do you offer weekend and evening service?

Yes. We understand that agricultural operations and logistics run 24/7, especially during harvest season and peak distribution periods. Weekend and evening service available—no extra fees.

What payment methods do you accept?

Cash, check, all major credit cards, PayPal, Venmo, Zelle, and fleet account billing. We invoice fleet managers with NET 15 payment terms for established customers.

How far do you travel for mobile testing?

Primary service area (no travel fees): 35-mile radius of Stockton-Modesto corridor
Extended service: Up to 75 miles with travel fee
Custom locations: Entire Central Valley from Sacramento to Fresno—contact for arrangements

Book Your Mobile CARB Testing Today

Call or Text: 916-890-4427

Fastest response for same-day and next-day service

Email: sales@norcalcarbmobile.com

Fleet inquiries and service coordination

Support: support@norcalcarbmobile.com

Existing customer service and scheduling

Online: www.NorCalCARBMobile.com

Service area map, pricing details, and customer portal

Text for Quick Quote:

"Need J1667 testing for 3 trucks in Tracy, available Friday?"
We respond within 2 hours during business hours

Service Hours

Monday - Friday: 7:00 AM - 7:00 PM
Saturday: 8:00 AM - 6:00 PM
Sunday: By appointment
After-Hours Emergency: Available for fleet compliance deadlines

Our Guarantee: Compliance Made Simple

At NorCal CARB Mobile, we have no reason to exist except to serve Central Valley trucking operations, agricultural fleets, and logistics companies.

We don't just test trucks—we keep California's most productive agricultural region and its massive logistics infrastructure moving forward, compliant, and profitable.

From the dairy farms of Turlock to the Amazon warehouses of Tracy, from the wine country of Lodi to the asparagus fields of Stockton—when Central Valley trucks need CARB compliance, they call NorCal CARB Mobile.

Serving All of San Joaquin County & Central Valley:

Stockton | Tracy | Lathrop | Lodi | Manteca | Ripon | Escalon | French Camp | Modesto | Turlock | Ceres | Riverbank | Oakdale | Merced | Livingston | Atwater | Patterson | Newman | Gustine | Waterford | Salida | Hughson | Linden | Lockeford | Farmington

Contact NorCal CARB Mobile

Phone: 916-890-4427
Sales: sales@norcalcarbmobile.com
Support: support@norcalcarbmobile.com
Website: www.NorCalCARBMobile.com

NorCal CARB Mobile – Mobile CARB Clean Truck Check Testing for Northern California's Agricultural & Logistics Hub