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NEIL O. ANDON& ASSOCIATES, INC. <br /> P VE R S ti GEOTECHNICAL•ENVIRONMENTAL•GROUNDWATER•INSPECTIONS•TESTING.LABORATORY SERVICES <br /> D h WEBSITE: www.noandetson.com CORPORATE OFFICE SACRAMENTO OFFICE <br /> Z W EMAIL: noa@naaudctson.com 22 Houston Lane 4221 Nmnlgatc Botdtwwd;Suite 6 <br /> 4 K CHICO: (530)891-6304 Lodi,Califomi3 95240-2405 Sacramento,California 95834-1227 <br /> 4 \P STOCKTON: (209)472-1491 (209)367-3701 (916)929-9267 <br /> S S O G RANCHO CORDOVA: (916)631-4455 FAX:(209)333-8303 FAX:(916)929-9269 <br /> May 8,2003 <br /> Mr.Tom Cosentino <br /> Greer Construction <br /> 1111 1 st St,Escalon,CA 95320 <br /> Subject: Additional Nitrate Water Test,Cosentino Winery <br /> 16750 E. State Route 88,Lockeford,California <br /> (APN)is 019-180-35,UP-01-8 <br /> Dear Mr. Cosentino, <br /> Per your request,our office has completed additional nitrate water test of the onsite well. We collected a <br /> water sample at the facet near the well head and another at an outside facet on the house on April 7, <br /> _ 2003. The sample was submitted to Precision Enviro-Tech,Stockton.for nitrate testing. <br /> The results indicate the nitrate concentration of the water sample collected at the house was 107 mg/L- . <br /> NO,and the nitrate.concentration of the water sample collected at the well was 104 mg/L-NO3. The <br /> maximum contaminate level(MCL)for nitrate in drinking water is 45 Tng/L-NO,. <br /> The original nitrate sample was collected from an outside facet at the house on March 4, 2003. The <br /> result was the nitrate concentration of the water sample was 77 mg/L-NO3. <br /> We understand from Cosentino Winery that no fertilization of the vineyard has been applied therefore the <br /> source of the high level nitrate in the drinking water may be from the aquiifer and not from leaking of the <br /> fertilizer drip system. <br /> If you have any questions,please do not hesitate to call. <br /> Best Regards, <br /> Nei Anderson&Associates,Inc. , s <br /> G� <br /> Ed elc M.Sc. Senior Geologist s `' <br /> CEG-2151 CHG-653 fr�G'r <br /> �tl� <br /> attachments/ lab results <br /> chain of custody <br /> iI <br /> apE 4,sp . <br /> r i <br /> ► M <br /> Y w <br /> c ti <br /> i r <br /> Assoc. <br />