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Californiaonal Water Quality uali ty Co Al Board <br /> Central Valley Region <br /> Katherine Hart. ChairX== <br /> Linda S.Adams Arnold <br /> Secretary for 1020 Sun Center Drive )464 Rancho Cordova, California 95670.6114 Schwarzene er <br /> Environmental Phone(916)46 rboar •FAX v/ce 464-4645 Governor99 <br /> Protection http://www.waterboards.ca.gov/centralvalley <br /> 18 August 2010 RECEIVED <br /> Nestle USA Inc. AUG Q`8 2010 <br /> Attention: Mr. Mike Desso <br /> 800 North Brand Boulevard ENVIRONMENTAL HEALTH <br /> Glendale, California 91203 DEPARTMENT <br /> LABORATORY CHEMICAL ANALYSES OF WATER SAMPLES: JOHN DEEGAN <br /> DOMESTIC SUPPLY WELL, 802 VERA 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. John Deegan's private domestic supply well at <br /> 802 Vera 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. Deegan 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. Deegan'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. He indicated that Nestle would deliver bottled <br /> water to the residence on the morning of 12 August. The following table summarizes the <br /> laboratory chemical analyses results, and the State of California Maximum Contaminant <br /> Levels (MCLs) 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 /> 7/23/201.0 5 5 1.7 <br /> 8/10/2010 4.5 <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 /> CaRecycled Paper <br />