Air Resources Regulatory Experts! LLC is an environmental engineering company with proven results for diesel equipment owners facing costly compliance and maintenance issues. Our staff has over 80 years of combined experience serving diesel fleets to ensure the following bases are covered:


FIRST Fleet Management System:


Our proprietary and secured data system supports our compliance and grant writing projects. All the data about the client’s fleet, compliance actions taken, emissions testing performed and grant documents are housed in a user-friendly and secured environment. We currently manage over 15,000 vehicles for all industries and fleet sizes from Fortune 500 companies to one truck owners.

Teamwork you can rely on!

Send us an email!



1822 21st Street

Sacramento Ca, 95811


Los Angeles


12410 Foothill Blvd

Ste.S Sylmar CA 91342


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Julie Arenz

Office Administrator

Julian Barazi

Field Services Manager

Sally Su

Sales Manager

Rod Michaelson

Emissions Consultant

Les Simonson

Project Manager

Jared Yamasaki

Project Manager

CARB compliance is what we do!

916-520-6040 ext.102

CARB Compliance Registration, Auditing and Training

The California Air Resources Board (CARB) has the most stringent diesel pollution control laws in the US. Our compliance experts can confirm that past and future rule deadlines are met and maintenance personnel adequately trained to ensure compliance. We can run compliance calculations to help determine the next action date and future actions that need to be taken. CARB requires annual reporting for its Truck and Bus, Off-Road, LSI (large spark), and TRU (reefer) regulations and we supply turnkey solutions for new and existing fleet owners. The California model of diesel regulation as expanded beyond its borders and we routinely consult across the country with interstate carriers and state officials with the goal of making any regulations achievable and maximizing the use of grant funds for early action. We were twice selected by CARB as their training contractor to educate nationwide and international fleet operators and conducted over 150 classes for more than 6,000 attendees across the US.

Diesel Truck Smog Check/PSIP Smoke Opacity Testing

From California to New Jersey, states across the US may require an annual smog check. The Periodic Smoke Inspection Program (PSIP) affects most commercial diesel vehicles in California. Diesel trucks greater than 6,000 lbs GVWR require annual testing when the engine turns 4 years old. In most cases the truck year and engine year are not the same. Our trained and insured field staff uses the approved diagnostic meters to test over 2,500 trucks each year from the Mexican border to the Canadian border. Our proprietary FIRST Fleet Management System is used to manage all client compliance data to prove compliance status and provide audit defense..



CARB requires Diesel Particulate Filters (DPFs), both aftermarket and OEM, to be cleaned on an annual basis. We are part of the Diesel Emissions Service DPF cleaning service network in Southern California and clean DPFs using Filtertherm® equipment.and can coordinate service throughout the West.

CARB Enforcement Resolution

We strive to eliminate our clients’ risk of paying fines and penalties. In addition to our expertise our professional liability insurance protects our clients. However new clients (many of whom tried to do it on their own) have come to us with compliance problems. We have resolved dozens of citations and case settlements with CARB on behalf of our clients. We analyze the fleet data and respond to CARB audit requests and represent our clients when it comes to negotiating the most reasonable outcome possible to resolve the problem.


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