California Air Resources Board 2009 Almanac (web) Appendix A Salton Sea Air Basin  Table A-24 Oxides of Nitrogen (NOx) Facility Name City Tons per Year Imperial Irrigation District El Centro 296 Holly Sugar Brawley 210 Reactive Organic Gases (ROG) Facility Name City Tons per Year Directly Emitted Particulate Matter (PM10) Facility Name City Tons per Year U.S. Gypsum Plaster City 156 Directly Emitted Particulate Matter (PM2.5) Facility Name City Tons per Year