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- —- rMA <br /> Working To Restore Nature <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone: (209) 838-3507 CCPY <br /> FAX: (209) 838-3509 <br /> October 22, 1993 <br /> Mr. Te Hull 2 <br /> W.T. Hull OCT and Co., Inc. X993 <br /> 7808 Kelley Drive ENVIRONMENTAL HEALTH <br /> Stockton, CA 95207 PERMITISERVICES <br /> Subject: Subsurface Site Assessment <br /> 200 West Harding Way, Stockton, California <br /> Mr. Hull: <br /> RESNA Industries Inc. (RESNA), is submitting this letter report to summarize drilling activities <br /> associated with a Subsurface Site Assessment at 200 West Harding Way, in Stockton, California <br /> (Plate 1). The investigation was requested by W.T. Hull and Co., Inc. <br /> The site currently is occupied by an office building and associated asphalted parking area. It <br /> is.our understanding that the site previously was occupied by a retail fueling station and included <br /> underground fuel storage tanks (USTs). The USTs were presumably removed in accordance <br /> with appropriate regulations prior to construction of the existing structure. The location of the <br /> USTs, dispenser island, and lubrication facility were determined using photographs and verbal <br /> communication with the former property owner by W.T. Hull and Co., Inc. <br /> FIELD METHODS <br /> To investigate potential soil impaction by the former USTs, RESNA advanced four angle borings <br /> and one vertical boring in the vicinity of the existing structure, as shown on Plate 2. The angle <br /> borings were advanced at an angle of 45' from vertical and samples were collected at <br /> approximately 21 and 35 feet along the bore length (15 and 25 feet below surface grade) to <br /> determine soil conditions beneath former potential release locations. Soil samples were collected <br /> from the vertical boring at depths of 15.5 and 25.5 feet below grade. A planned angle boring <br /> located in the northeast corner of the property was not advanced due to heavy street traffic and <br /> associated safety considerations. <br /> SR-1093.FNL <br /> n <br />