When I google "CARB states" many sources list Pennsylvania, and the PA DEP says this on their website

http://www.dep.pa.gov/Business/Air/BAQ/Automobiles/Pages/CleanVehicleProgram.aspx

2008 The Pennsylvania Clean Vehicles Program came intoeffect for MY 2008 and newer passenger cars and light duty trucks. These vehicles are considered subject to the program if 1) they are MY 2008 or newer, 2) under 8,500 lbs GVWR (gross vehicle weight rating), and 3) have less than 7,500 miles on the odometer. The PA Clean Vehicles Program adopts by reference certain provisions of the California Low Emission Vehicle Program. Studies performed in 2005/2006 show that the current form of the California program, called CA LEV II, will provide significantly higher levels of pollution reduction than the then existingfederal mobile source emission control program, Tier II. Subject vehicles are required to be certified for emissions by the California Air Resource Board (CARB), in order to be sold, leased, offered for sale or lease, imported, delivered, purchased, rented, acquired, received, titled or registered in Pennsylvania. Vehicles that are certified for use in all 50 states meet the requirements of the program.