Office Addresses and Phone Numbers
DTSC Headquarters (Joe Serna Jr. Cal/EPA Headquarters Building)
1001 I Street
Sacramento, CA 95814-2828
P.O. Box 806
Sacramento, CA 95812-0806
Berkeley Regional Office
Clovis Field Office
Cypress Regional Office
Pasadena Environmental Chemistry Laboratory
San Diego Field Office
- Statewide Map (PDF Format)
Berkeley Environmental Chemistry Laboratory
Chatsworth Regional Office
Commerce Regional Office
6119 E. Washington Blvd., #120
Commerce, CA 90040
Imperial County CUPA Office
Sacramento Regional Office - Cal Center
Additional Contact Information
Hazardous Waste Management
(800) 618-6942 (for EPA ID Numbers,Generators and Manifests)
Waste Alert Hotline
(800) 698-6942 (for complaints)
(800) 618-6942 (for assistance)
Regulatory Assistance Office
DTSC Personnel Office
(916) 323-2679 (Employment Verification)
If you can’t find the information you’re looking for, or the answer to your question, our Regulatory Assistance Officers are able to help. Call (800) 72TOXIC or (800) 728-6942). From outside California, call (916) 324-2439. Please leave a message (including your email address and/or phone number) on the RAO phone message line and a Regulatory Assistance staff will contact you within 3 to 4 business days.
At DTSC, we are committed to being honest, open, responsive, and direct with the public. The links below direct you to various means of giving us your feedback.
- We are interested in hearing about your experiences with DTSC, both positive and negative. Please take a moment to complete a Cal/EPA Customer Survey Form, either on line or by using a printable form.
- We want to continue to improve our website, and your comments are an important part of doing that. Send your comments and suggestions in an e-mail to the DTSC Web Coordinator at email@example.com.