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I ` <br />' Stockton Plating Inc. <br /> Soil 6 Groundwater Investigation <br /> April <br /> Pagea 14 -- 14 - <br />' the so3_1 from the ground surface to a depth of approximately 35 <br /> feet. At the 40 and 45 foot depths in MW1 and MW2, PID readings <br /> were approximately 10 parts per million (ppm) . Field screening <br />' of soil samples collected from MW3 detected organic vapors from <br /> 20 feet to 45 feet below the ground surface at concentrations <br />' ranging from 13 to 80 ppm. During the drilling, groundwater was <br /> encountered at a depth of approximately 47 feet below the ground <br />' surface. <br />' Analyses of the groundwater samples indicate that 48 mg/l <br /> ITPH-G and BTEX constituents ranging to 13,000 µg/1 were detected <br /> in the groundwater sample collected from MW3 . Lower <br /> concentrations of BTEX constituents were detected in MWl and MW2 . <br /> TEPH (diesel) was not detected in the groundwater samples <br /> collected from the monitor wells . <br /> The monitor well collars were surveyed and the survey data <br /> was used in con3unction with depth-to-groundwater measurements to <br /> estimate the groundwater gradient. The groundwater gradient, <br />' measured on March 2 , 1994, was 0 . 002 (0 .2 ft. /100 ft. ) trending <br /> Ieast-northeast. <br /> I <br /> CONDOR <br />