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L10k <br /> GROUNDWATER <br /> ❑❑❑ TECHNOLOGY, INC. T,'iLane,Concord,CA 94520 <br /> ha LIM 6 N V 6Z Lo (415)671-2387 <br /> January 18, 1990 JAIL 2 3 1990 <br /> ENVIRONMENTAL HEALTH <br /> Job No. 203 475 2894. 03 PERMIT/SERVICES <br /> Mr. Greg Lyon <br /> San Joaquin County <br /> Environmental Health Division <br /> 1601 East Hazelton Avenue <br /> Stockton, CA 95201 <br /> ik { Subject: Southland Project No. 20680, <br /> 9110 Thornton Road, Stockton, California <br /> Dear Mr. Lyon: <br /> In response to your request for additional information pertaining <br /> to the subject site, please find the enclosed well logs and <br /> requested information. <br /> Individual well logs for each of the three MW-15 monitoring-well <br /> cluster wells has been drafted. These three logs are enclosed <br /> for your records. <br /> A well log does not exist for PW-3 . This 12-inch-diameter <br /> recovery well was installed on site in November 1986, to replace <br /> the 4-inch-diameter monitoring well, MW-4, which had been used in <br /> the interim as an on-site recovery well. The well was drilled by <br /> using a bucket auger rig which does not facilitate the logging of <br /> subsurface samples. In addition, the close proximity of other <br /> on-site wells were used as reasons for not recording a drill log <br /> for this well . <br /> Offices throughout the U.S.,Canada and Overseas <br />