San Francisco Bay Area - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.0299 13% 1% Area-wide Sources 0.0025 1% 0% On-Road Mobile 0 0% 0% Gasoline Vehicles 0 0% 0% Diesel Vehicles 0 0% 0% Other Mobile 0.2059 86% 8% Natural Sources <.0001 0% 0% Total 0.2383 100% 10% Total Statewide 2.4651