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Californioegional Water Quality Cobol Board j <br /> Central Valley Region ° <br /> Linda S.Adams Karl E. Longley, ScD, P.E., Chair Arnold <br /> Secretaryfor 11020 Sun Center Drive 4200,Rancho Cordova,California 956706114 Sch G vernegger <br /> Environmental �r � ,,,Go4ernor <br /> Protection Phone(916)464-3291 •FAX(916)464-4645 � — ((IIS�II\1'� <br /> http://www.waterboards.ca.gov/centralvalley vI Jr� <br /> SEP 3 B 2008 <br /> 16 September 2008 ENVIRA%filV 1 HEALTH <br /> PERMIT/SERVICES <br /> Mr. Mike Desso <br /> Nestle USA Inc. <br /> 800 North Brand Boulevard <br /> Glendale, California 91203 <br /> FIRST AND SECOND QUARTER 2008 SITE STATUS REPORTS — 2007 FORMER <br /> NESTLE USA, INC., 230 INDUSTRIAL AVENUE, RIPON, SAN JOAQUIN COUNTY <br /> California Regional Water Quality Control Board, Central Valley Region (Regional Water <br /> Board) staff has reviewed the First Quarter 2008 Site Status Report (First Quarter Report), <br /> dated 15 May 2008 and the Second Quarter 2008 Site Status Report (Second Quarter <br /> Report), dated 15 August 2008. The reports were prepared by Environmental Cost <br /> Management, Inc. (ECM), on behalf of Nestle USA, Inc. (Nestle) for its former coffee <br /> decaffeination facility located at 230 Industrial Avenue, Ripon, California (Former Facilityr. <br /> Comments <br /> 1. In future quarterly site status reports, Nestle should incorporate comments that the <br /> Regional Water Board presented in our 15 September 2008 review letter for the <br /> 2007 Annual Groundwater Monitoring Report, dated 15 March 2008. Regional Water <br /> Board staff note that Nestle prepared and submitted the First and Second Quarter <br /> Reports before we mailed our review letter. <br /> 2. In the Work Performed section of the First Quarter Report, Nestle discussed a shutdown <br /> of its Stockton Avenue groundwater treatment system that occurred between <br /> 14 March and 21 March 2008 due to a burst disk of a carbon vessel. The first bullet item <br /> on page 5 includes the following statement: "ECM restarted the treatment system without <br /> carbon after receiving permission from the RWQCB." Please note that the Regional <br /> Water Board did not object to the restart, provided that Nestle continued to meet the <br /> discharge requirements of its agreement with the City of Ripon. <br /> 3. Regional Water Board staff concurs with Nestle's recommendation to abandon wells <br /> screened across multiple water-bearing zones. In a study performed on 26 August 2008 <br /> and submitted to the Regional Water Board on 8 September 2008, Nestle demonstrated <br /> with a flow meter that the vertical gradients between the Intermediate and Lower aquifer <br /> zones were downward in Neenah Paper Company monitoring wells TH-8 and TH-10. <br /> California Environmental Protection Agency <br /> 01 Recycled Paper <br />