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- — -- 1 Envi ron menta I <br /> Science & <br /> JFngincerh-,t;,111C. <br /> March 8, 1991 <br /> Project No. 6-90-5030 <br /> Mr. Harlin Knoll <br /> San Joaquin County, Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> SUBJECT: Documentation of February 1991,Sampling at AT&T Microwave Station, 110 <br /> West Turner Road, Lodi, California <br /> Dear Mr. Knoll: <br /> Enclosed is a report of the results of sampling the ground water from monitoring wells at <br /> the subject site on February 6, 1991. <br /> ESE recommends that the former tank excavation material be left in place. AT&T should <br /> obtain three additional sets of ground-water samples on a quarterly basis to confirm the <br /> initial results of sampling. Sampling should take place near the dates of May 6, August 6 <br /> and November 6, 1991. If analytical results remain below State of California Action <br /> Levels, ESE will request that no further action be required and that written site closure be <br /> granted from San Joaquin County and the Central Valley Regional 'Yater Ouality Control <br /> Board in regard to the former underground diesel tank at the subject facility. <br /> LSE recommends that soil generated during the drilling of the monitoring wells be disced <br /> into the surface on site. <br /> Please contact Neil Garrett at (415) 685-4053 with any questions or comments. <br /> Sincerely, <br /> ENVIRONMENTAL SCIENCE & ENGINEERING, INC. <br /> Neil R. Garrett 1 <br /> Geologist <br /> Enclosure: ,Documentation of February 1991, Sampling" <br /> -_ - - -cc: Mr. Ron Tamoush,-AT&T Communications,-Pleasanton - <br /> •1IR)I1 Ndson ACL'IItlC,SIISIL' <br /> Concord.CA 04520 Plump l41�I f,95-4115;4 � 4:1't(•415)t S;-;323 <br />