Below are some regulatory links for your reference:
California Department of Toxic Substances Control
http://dtsc.ca.gov
California Division of Occupational Safety and Health (DOSH)
http://www.dir.ca.gov/DOSH/dosh1.html
California State Water Resources Control Board Water Quality
http://www.swrcb.ca.gov/stormwtr/index.html
Hazardous Materials Safety
http://hazmat.dot.gov/
South Coast Air Quality Management District
http://www.aqmd.gov
U.S. Department of Labor Occupational Safety and Health Administration
http://osha.gov/