24 . Limit values for controlling emissions of VOCs from new stationary sources in the following stationary source categories are specified in the following documents : ( a ) Storage Vessels for Petroleum Liquids -- 40 Code of Federal Regulations ( C.F.R . ) Part 60 , Subpart K , and Subpart Ka ; ( b ) Storage Vessels for Volatile Organic Liquids -- 40 C.F.R . Part 60 , Subpart Kb ;