District Fuel Combustion Methodologies - Manufacturing/Industrial Contact Area Source Inventory Email areasourceinventory@arb.ca.gov Phone (279) 208-7397 Districts MethodologiesSacramento Metropolitan Air Quality Management DistrictIndustrial Combustion - Natural Gas (November 2002)Industrial Combustion - Diesel / Distillate Oil (July 2002) San Joaquin Valley Air Pollution Control DistrictIndustrial Natural Gas Combustion (November 2006)