California Air Resources Board

Refer to the documents below for your specific Clean Truck Check Referee situation. These documents are meant to be sent to Admin@CarbTest.org with any other Referee requested items. 

State-directed Referee Inspection (Citations-NST-CARB)

Engine Change Verification

Alternative Fuel System Retrofit Verification

Motor Home Conversion Verification

Test Incompatibility/Alternative Test Procedure

Parts Unavailability Compliance Time Extension Request

Credentialed Tester Not Available

Test Result Dispute