San Diego - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.0552 25% 2% Area-wide Sources 0.0015 1% 0% On-Road Mobile 0 0% 0% Gasoline Vehicles 0 0% 0% Diesel Vehicles 0 0% 0% Other Mobile 0.1618 74% 7% Natural Sources <.0001 0% 0% Total 0.2184 100% 9% Total Statewide 2.4651