 DTSC is part of the California Environmental Protection Agency (Cal/EPA), has more than one thousand employees, and is headquartered in Sacramento.DTSC also has a number of regional offices across the state including two environmental chemistry laboratories, and field offices in Sacramento, Berkeley, Los Angeles, Chatsworth, Commerce, Cypress, Clovis (Fresno), San Diego and Calexico.DTSC regulates the generation, handling, treatment and disposal of hazardous waste in California.