California Air Resources Board 2006 Almanac (web) Chapter 2 Statewide Table 2-10 Particulate Matter (PM10) Air Basin Facility Name City Tons/Year Mojave Desert Mitsubishi Cement 2000 Lucerne Valley 1468 Mojave Desert Cemex - Black Mountain Quarry Apple Valley 955 Mojave Desert TXI Riverside Cement Company Oro Grande 753 Mountain Counties Sierrapine Ltd Ampine Division Martell 518 South Coast ChevronTexaco Products El Segundo 350 Mojave Desert Antelope Valley Aggregate Littlerock 345 Mojave Desert California Portland Cement Mojave 329 Mojave Desert Searles Valley Minerals Trona 320 San Francisco Bay Area Shell Martinez Refinery Martinez 308 Mojave Desert National Cement Lebec 295