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�I <br /> k" KLEINFELDER J <br /> JJ <br /> r <br /> CONCLUSIONS <br /> Three ground water monitoring wells were installed at the Tracy Community Hospital <br /> facility outside the former excavation to: 1) observe subsurface soil conditions, 2) obtain <br /> depth of ground water data, 3) calculate the local ground water gradient,land 4) assess the <br /> quality of the local ground water. <br /> During the drilling of MW-1 and Boring B-8, low PID readings were recorded at the 10- <br /> foot samples. B-8 is located near an existing underground storage tank. This tank has not <br /> been excavated because its relationship to existing structures. It is, currently being <br /> permitted for closure in-place. According to Tracy Hospital excavation of this tank could <br /> necessitate relocating the existing cooling tower. See Plate 2 for location. All soil samples <br /> were placed on hold pending results of the water analyses. On March 29, 1989, two soil <br /> samples from Boring B-8 (10-foot and 11.5-foot intervals) were requested for analysis on a <br /> standard two- to three- week turnaround. The results of these soil samples will be sent as <br /> an addendum to this report. <br /> A ground water sample was collected from each monitoring well on March 23, 1989. A <br /> duplicate sample (22048) was taken from MW-3 and submitted for analysis as a blind <br /> r <br /> duplicate sample. All hydrocarbon constituents: were below laboratory reporting limits <br /> except for 0.9 ug/l toluene, detected in Sample 22048, the duplicate sample from the <br /> upgradient MW-3 (refer to Table 1). <br /> Analytical results of the samples collected from the monitoring wells indicate that ground <br /> water has not been significantly impacted by petroleum hydrocarbon migration. <br /> Kleinfelder recommends that a copy of this report be forwarded to the SJLHD for their <br /> review. <br /> 175-89-543 9 <br />