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Phone Numbers, E-Mail Addresses and Locations of Employees

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If you need information about EPA IDs, go to the Web page for EPA ID Numbers. If you have regulatory questions please call 1-800-728-6942. To file and environmental complaint call 1-800-698-6942 or use the online Environmental Complaint System.

Don't know whom to call? Dial 1-800-728-6942 and talk to one of our Duty Officers.

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Employee E-Mail Phone Number	Location Mailing Address City, Zip

O'Docharty, Mike Michael.ODocharty@dtsc.ca.gov (916) 255-3663	Sacramento Field Office (Yahoo Maps) 8800 Cal Center Drive Sacramento, 95826-3200

Ochoa, Karen Karen.Ochoa@dtsc.ca.gov (916) 255-6444	Sacramento Field Office (Yahoo Maps) 8800 Cal Center Drive Sacramento, 95826-3200

Ochoa, Patricia patricia.ochoa@dtsc.ca.gov (818) 717-6574	Chatsworth Field Office (Yahoo Maps) 9211 Oakdale Avenue Chatsworth, 91311-6505

Ohanian, Nick Nick.Ohanian@dtsc.ca.gov (916) 324-3135	Headquarters - 1001 I Street (Yahoo Maps) P.O. Box 806 Sacramento, 95812-0806

OKADA, ASAHI Asahi.Okada@dtsc.ca.gov (510) 540-2687	Berkeley Field Office (Yahoo Maps) 700 Heinz Avenue, Suite 200 Berkeley, 94710-2721

Omer, Mohammed mohammed.omer@dtsc.ca.gov (916) 322-2505	Headquarters - 1001 I Street (Yahoo Maps) P.O. Box 806 Sacramento, 95812-0806

Orona, Brittani Brittani.Orona@dtsc.ca.gov (916) 324-1327	Headquarters - 1001 I Street (Yahoo Maps) P.O. Box 806 Sacramento, 95812-0806

Ortega, Carlos Carlos.Ortega@dtsc.ca.gov (818) 717-6698	Chatsworth Field Office (Yahoo Maps) 9211 Oakdale Avenue Chatsworth, 91311-6505

Ortiz, Arely Arely.Ortiz@dtsc.ca.gov (510) 540-3968	Environmental Chemistry Lab, Berkeley (Yahoo Maps) 700 Heinz Avenue, Suite 100 Berkeley, 94710-2721

Ortiz, Gamaliel gamaliel.ortiz@dtsc.ca.gov (916) 327-4383	Headquarters - 1001 I Street (Yahoo Maps) P.O. Box 806 Sacramento, 95812-0806

Oseas, Nannette Nannette.Oseas@dtsc.ca.gov (818) 717-6589	Chatsworth Field Office (Yahoo Maps) 9211 Oakdale Avenue Chatsworth, 91311-6505

Ostrom, Nancy Nancy.Ostrom@dtsc.ca.gov (916) 445-3077	Headquarters - 1001 I Street (Yahoo Maps) P.O. Box 806 Sacramento, 95812-0806