District Solvent Evaporation Methodologies - Asphalt Paving/Roofing Contact Area Source Inventory Email areasourceinventory@arb.ca.gov Phone (279) 208-7397 Districts MethodologiesImperial County Air Pollution Control DistrictAsphalt Paving (February 2016)San Joaquin Valley Air Pollution Control DistrictAsphalt Paving (2008, revised January 2011)No district methodologies have been submitted for the Asphalt Roofing category.