Managing Hazardous Waste

We strengthen regulations and streamline waste management

Permitting Division Contact Information

Mailing Address:

Department of Toxic Substances Control
Permitting Division
1001 I Street / P.O. Box 806
Sacramento, California 95812-0806
(916) 323-3706

Division Chief
Nelline Kowbel, Acting	(510) 540-3807	Nelline.Kowbel@dtsc.ca.gov
Branch Chiefs
Lori Koch-Acting-Berkeley/HQ	(510) 540-3951	Lori.Koch@dtsc.ca.gov
Wayne Lorentzen-Cal Center/Chatsworth	(916) 255-3749	Wayne.Lorentzen@dtsc.ca.gov
Vacant-Cal Center	(916) 255-3578	Vacant
Supervisors
PERMITS
Cal Center
Vacant	(916) 255-3578	Vacant
Ryan Batty	(916) 255-3612	Ryan.Batty@dtsc.ca.gov
Vacant	(916) 255-3602	Vacant
Muzhda Ferouz	(916) 255-3883	Muzhda.Ferouz@dtsc.ca.gov
Berkeley
Lori Koch	(510) 540-3951	Lori.Koch@dtsc.ca.gov
Chatsworth
Phillip Blum	(818) 717-6694	Phil.Blum@dtsc.ca.gov
CEQA
Robert Irving-Cal Center	(916) 255-3988	Robert.Irving@dtsc.ca.gov
FINANCIAL RESPONSIBILITY
Julie Mullins-Cal Center	(916) 255-3678	Julie.Mullins@dtsc.ca.gov
Other Permitting Information
Emergency Permits		Emer_Permit@dtsc.ca.gov
Other Inquiries
Regulatory Assistance Office	(800) 728-6942	RAO@dtsc.ca.gov