• South Coast Air Quality Management District

    • Environmental Sevices
    21865 Copley Drive
    Diamond Bar, CA 91765-4178
    (909) 396-3663
    (909) 396-3933 (fax)
    • About

      Air pollution control agency for all of Orange County and the urban portions of Los Angeles, Riverside and San Bernardino counties.

    • Whom to Contact

      • Leeor Alpern
        Senior Public Information Specialist
        Phone: (909) 396-3663