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t anIUrnia Ke 1()nal vVater VUaIlLyl Ui1Li Ul DUcii U <br /> Central Valley Region <br /> Peter M.Rooney Sacramento MaitiOfrice Ed J.Schnabel <br /> Secremryfor Internet Address: http://www.swrcb.ca.gov/-mgcb5/bome.htnil Chair <br /> Environmental 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Protection Phone(916)255-3000•FAX(916)255-3015 <br /> 29 September 1998 <br /> Ms. Leah Goldberg <br /> Hanson-Bridgett <br /> 333 Market Street, 23rd floor <br /> San Francisco, CA 94105-2173 <br /> SPLIT SAMPLING RESULTS, KOPPEL STOCKTON TERMINAL, STOCKTON, SAN JOAQUIN <br /> COUNTY <br /> Thank you for arranging for me to collect split samples during the third quarter 1998 groundwater <br /> monitoring event at the Koppel Stockton Terminal. The reason for the collection was to answer the <br /> questions of(a) whether there is any need to field filter the samples, and (b) whether any ammonia is <br /> volatilzed when using a pump, instead of a bailer, to collect the samples. <br /> As shown in the enclosed memorandum and laboratory report,there was no significant difference in the <br /> concentrations of nitrate, ammonia, or TDS between samples that were field filtered and samples that <br /> were not field filtered. Therefore, there will be no need to field filter groundwater samples collected <br /> during future quarterly monitoring events. In addition, you may continue to use a submersible pump to <br /> both purge the well and collect the water sample. <br /> If you have any questions, I can be reached at(916) 255-3080. <br /> WV1/3 <br /> WENDY WYELS <br /> Site Cleanup Unit <br /> Enclosure <br /> cc w/enc.: Mr. Daniel Munzer, Munco,Inc., Long Beach <br /> Ms. Marian Barbonio, Chevron Chemical Company, San Ramon <br /> Mr. Sheldon Nelson, Chevron Research and Technology, Richmond <br /> Dr. Kirk O'Reilly, Chevron Research and Technology, Richmond <br /> Mr. Gerald Vogt, CH2M Hill, Redding <br /> ` cc: Mr. Mike Infuma, San Joaquin County Environmental Health Department, Stockton <br /> Ms. Karen Baril, Cargill,Inc., Minneapolis, Minnesota <br /> Mr. Brian Roberts, Chevron Corporation, San Francisco <br /> Mr. Steve Larson, Cargill, Minneapolis, Minnesota <br /> Mr. Burnie Wilhiem, Cargill Fertilizer, Florida <br /> Mr. Anthony Ciasulli, Morgan,Lewis & Brockis,Los Angeles <br /> Mr. Ken Laconde, SCS Engineers, Long Beach <br /> California Environmental Protection Agency <br /> �a Recycled Paper <br />