County of Alpine, Amador, Butte, Calaveras, Colusa, Del Norte, El Dorado, Fresno, Glenn, Humboldt, Lake, Lassen, Madera, Marin, Mariposa, Mendocino, Modoc, Napa, Nevada, Placer, Plumas, Sacramento, San Joaquin, Shasta, Sierra, Siskiyou, Sonoma, Tehama, Trinity, Tuolumne, Yolo, and Yuba.
RHBXRayInspectionRegion1@ācdph.ca.govā