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Air Quality Programs

Environmental compliance helps keep our air clean by enforcing pollution limits, monitoring emissions, and promoting cleaner technologies. It protects public health and ensures industries follow rules that reduce harmful pollutants.

The California Air Resources Board (CARB) regulates mobile emission sources for certain UCLA vehicles.  

Under the Off-Road Diesel-Fueled Fleets Regulation (Off-Road Regulation), UCLA reports inventory annually of all self-propelled off-road diesel vehicles 25 horsepower and greater. These include: 

•    Lawn mowers
•    Tractors
•    Backhoes
•    Vacuum sweepers  

In order to economically and feasibly reduce criteria pollutants, the Off-Road Regulation requires replacement, retirement, and/or retrofit of older vehicles in a phased approach.
Vehicles subject to the Off-Road Regulation require special CARB labeling and are subject to idling limits.


Under the Large-Spark Ignition (LSI) Regulation, facilities are required to report off-road large spark-ignition vehicles with 25 or more horsepower and greater than 1-liter displacement. These include: 

•    Forklifts (electric Class 1 or 2 rider truck or LSI engine-powered Class 4 or 5 rider truck)
•    Sweepers/scrubbers (electric or LSI industrial floor cleaning equipment) 

While UCLA is not currently subject to CARB’s LSI regulation, Environmental Compliance annually assesses vehicle inventory to ensure continued UCLA compliance. 


EH&S should be notified as soon as possible when new and/or replacement vehicle purchases that may fall under these regulations are planned, and when vehicles are retired. 
All regulated vehicles are required to be registered through CARB’s Diesel Off-Road Online Reporting System (DOORS) within 30-days of operation. 


Registering A New Diesel Off-Road Vehicle:  

1. The requesting department provides EH&S the following information:
•    Vehicle manufacturer, model, model year, serial number 
•    Engine manufacturer, model, model year, serial number
•    Vehicle specifications sheet 
2. EH&S registers the vehicle in the State system. The system generates an Equipment Identification Number (EIN).  
3. EH&S provides the EIN to the requesting department along with CARB-mandated labeling instructions. 
4. The requesting department works with the UCLA Sign Shop (or equivalent) to produce and affix the labels to the new equipment. 


Reporting a New Large-Spark Ignition (LSI) Vehicle:

1. The reporting department provides EH&S the following information: 
•    Vehicle manufacturer, model, model year, serial number 
•    Engine manufacturer, model, model year, serial number 
•    Type of fuel (gasoline, propane, CNG fuel) 
•    Vehicle specifications sheet 
2. EH&S determines if the vehicle requires registration in the State system. If so, EH&S registers the vehicle in the State system. The system generates an Equipment Identification Number (EIN). 
3. EH&S provides the EIN to the reporting department along with CARB-mandated labeling instructions. 
4. The requesting department works with the UCLA Sign Shop (or equivalent) to produce and affix the labels to the new equipment. 


Please contact Environmental Compliance at (310) 825-5689 for more information, to report a new/retired vehicle, or for assistance. 

Additional information:
Off-road Vehicle Idling SOP
California Air Resources Board
Off-Road Diesel Fueled Fleets Regulation
Large Spark Ignition (LSI) Regulation

Refrigerants used in freezers, refrigerators, and air conditioners contribute to ozone depletion and global warming when released into the atmosphere. Because of this, the management of refrigerant gas is regulated at state and federal levels.

The South Coast Air Quality Management District (SCAQMD) requires UCLA to report biennially our inventory of stationary air conditioning systems, audit dates, and refrigerant use for all units with a refrigerant capacity greater than 50 pounds.

Environmental Compliance compiles information from various campus departments once every two years for reporting purposes.


EH&S must be notified as soon as possible when new and/or replacement comfort cooling units are planned so that the unit can be registered with SCAQMD.

Reporting a New Comfort Cooling System ( > 50 lbs charge only)

1. The reporting department provides EH&S with the following information:

•    Location of new unit
•    Manufacturer
•    Model
•    Serial Number
•    Refrigerant Type
•    Storage Capacity (lbs)

2. EH&S registers the unit in the SCAQMD system.

3. Once a year, EH&S will contact the reporting department to request audit dates and refrigerant use for the unit for SCAQMD reporting purposes.


Please contact Environmental Compliance at (310) 825-5689 for more information, to report a new/removed unit, or for assistance.

Additional information:

South Coast Air Quality Management District Rule 1415: www.aqmd.gov/home/rules-compliance/compliance/rule-1415-stationary-air-conditioning-systems 

Because of its high global warming potential, the California Air Resources Board (CARB) passed a regulation to reduce sulfur hexafluoride (SF6) gas emissions by placing a ban on the sale, use, and release of SF6. Title 17, section 95341 of the California Code of Regulations (17 CCR 95341) lists exemptions to the regulation. Current processes at UCLA that are statutorily exempt from the SF6 regulation include:

•    Use in etching (section 95341(a)(2))
•    Use as a dielectric medium ((a)(3))
•    Use as an arc quenching medium ((a)(4))

While not applicable for the above processes, several other exemptions exist that require users to keep records showing the annual quantity of SF6 purchased and used, and require an annual report to CARB.

Despite exemptions, UCLA is committed to optimizing and reducing SF6 use where feasible.  Environmental Compliance annually assesses exempted inventory to ensure UCLA’s continued compliance.

If your research requires SF6, EH&S must be notified to determine if your use qualifies for an exemption, and whether record keeping and annual reporting is required.


Please contact Environmental Compliance at (310) 825-5689 for more information or for assistance.

Additional information:
California Air Resources Board
Regulation for Reducing Sulfur Hexafluoride Emissions