2002 Almanac (page 233) Table 5-13 2001 Top Ten Counties: para-Dichlorobenzene para-DiChlorobenzene County Air Basin tons/year Percent Los Angeles South Coast 483 27% Orange South Coast 155 9% San Diego San Diego 150 8% Santa Clara San Francisco Bay Area 89 5% Alameda San Francisco Bay Area 74 4% San Bernardino South Coast 69 4% Riverside South Coast 64 4% Sacramento Sacramento Valley 62 3% Contra Costa San Francisco Bay Area 49 3% Fresno San Joaquin Valley 43 2%