2003 Almanac (page 251) Table 5-28 2002 Emission Inventory by Compound South Coast Air Basin - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 808 15% 4% Area-wide Sources 175 3% 1% On-Road Mobile 2086 39% 10% Gasoline Vehicles 1478 28% 7% Diesel Vehicles 608 11% 3% Other Mobile 2252 42% 11% Natural Sources 0 0% 0% Total 5321 100% 25% Total Statewide 21033