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Department of Toxic Substances Control <br /> Matthew Rodriquez Barbara A. Lee, Director Edmund G.Brown Jr. <br /> Secretary for 5796 Corporate Avenue Governor <br /> Environmental Protection Cypress, CA 90630 <br /> Office of Criminal Investigations <br /> Investigation Report <br /> OCI Case # 14947 <br /> Company Name: Thatcher Company of California, Inc. Facility or Site Name: fka: Sierra <br /> Chemical Com an <br /> Date Case Opened:11127/2018 Date of Site Visit: 11/28/2018 Date of Report: 2/15/2019 <br /> Facility/Site 1010 Industrial Drive„ Stockton, CA 95206 <br /> Address: <br /> Type of Business: Chemical manufacturer and distributor water treatment chemicals <br /> Facility Telephone (209) 983-8298 <br /> Number: ' <br /> Mailing address (if Same as site address <br /> different): <br /> County: San Joaquin <br /> Report Prepared Name: Anne Ekker job Title: Senior Environmental Scientist, Specialist <br /> b <br /> Primary Name: Alexander Reynon Job Title: Plant Manager <br /> Facility/Site Contact: Email: Alex.Reynon(a)tchem.com Phone Number: (209) 471-5815 (mobile) <br /> State or Fed EPA CAL000433517 CalEnviroScreen Score 90-95% <br /> ID #: <br /> Regulatory Status: Generator LQG or SQG status is under review by CUPA <br /> Site Visit Date(s): 11/28/2018 <br /> Arrival/Exit Time: A 10900 E 1830 <br /> Consent and Time: ® Yes ❑ No Time: 10:30 <br /> Person(s)Asking nne Ekker Job Title: Sr Environmental Scientist <br /> Person(s) Giving lAlexander Reynon IJob Title: Plant Manager <br /> Facility/Site Personnel Present During Investigation: <br /> Alexander Reynon Plant Manager (209) 471-5815 Alex.Reynon@tchem.com <br /> Department of Toxic Substances Control (DTSC) Personnel Participating in Investigation; <br /> Anne Ekker I Sr. Environmental Scientist (Specialist) Cypress 714 484-5309 1 Anne.Ekker dtsc.ca. o <br /> D Ian Clark I Sr Environmental Scientist (Supervisor) Sacramento 916 255-$731 D Ian.Clark dtsc.ca, ov <br /> Bonn Lew I Environmental Scientist I Sacramento 916 255-6441 Bonn .Lew dtsc.ca, ov <br /> iaomei Ma I Sr. Industrial Hygienist I Sacramento 916 255-6645 1 Xaiomei.Ma dtsc.ca. o <br /> 1of10 <br />