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California R1ional Water Quality Con*►l Board <br /> Central Valley Region ( - <br /> Katherine Hart, Chair - <br /> Linda S.Adams 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Arnold <br /> Secretary for Phone(916)464-3291 •FAX(916)464-4645 Schwarzenegger <br /> Environmental http://www.waterboards.ca.gov/centralvalley Governor <br /> Protection <br /> 18 August 2010 <br /> Nestle USA Inc. <br /> Attention: Mr. Mike Desso <br /> 800 North Brand Boulevard <br /> Glendale, California 91203 <br /> LABORATORY CHEMICAL ANALYSES OF WATER SAMPLES: KEN BURTON <br /> DOMESTIC SUPPLYWELL, 1051 ROBERT AVENUE, RIPON, SAN JOAQUIN COUNTY, <br /> FORMER NESTLE USA INC. FACILITY, RIPON, SAN JOAQUIN COUNTY <br /> Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff has <br /> reviewed the 11 August 2010 letter transmitting laboratory chemical analyses results on <br /> water samples collected from Mr. Ken Burton's private domestic supply well at <br /> 1051 Robert Avenue, Ripon, California. The letter was prepared by Environmental Cost <br /> Management, Inc., (ECM), on behalf of Nestle USA, Inc. (Nestle) for the former Nestle coffee <br /> decaffeination facility project located at 230 Industrial Avenue, Ripon, California. The <br /> purpose of ECM's letter was to notify Mr. Burton that his well has been contaminated by <br /> trichloroethene (TCE) and cis-1,2-dichloroethene (cis-1,2-DCE). Decaffeination facility <br /> operation between 1957 and 1970 contaminated groundwater beneath Ripon with TCE and <br /> its breakdown products, including cis-1,2-DCE. <br /> On 10 August 2010, Mr. Binayak Acharya of ECM notified me by telephone that laboratory <br /> chemical analysis of a water sample that was collected in July from Mr. Burton's well <br /> detected the contaminants and that a confirmation sample had been collected and submitted <br /> for analysis. He went on to say that Nestle had recently discovered the well, and that July <br /> was the first time the well had been sampled. <br /> On 11 August, Mr. Acharya again telephoned to notify me that analysis of the confirmation <br /> sample had also detected the contaminants. The following table summarizes the laboratory <br /> chemical analyses results, and the State of California Maximum Contaminant Levels (MCLs) <br /> and Public Health Goals (PHGs) for TCE: <br /> TCE Concentrations <br /> (micrograms per liter) <br /> Sample Date Sample California California <br /> Concentration MCL PHG <br /> 7/23/2010 1.3 <br /> 5 1.7 <br /> 8/10/2010 1.3 <br /> The following document establishes contaminant concentrations at which Nestle is required <br /> to take specific actions to protect water well users: 2007 Revised Water Replacement <br /> California Environmental Protection Agency <br /> Q11Recycled Paper <br />