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� r <br /> J. H. KLEINFELDER & ASSOCIATES <br /> File: W-2001-1 <br /> January 29 , 1986 <br /> Page 20 <br /> D. Site Hydrologic Conditions <br /> The depth to ground water beneath the site is approximately 45 <br /> feet as indicated by the three borings advanced on site. The <br /> general direction of ground water movement beneath the site is <br /> estimated to be to the southeast, although the direction of the <br /> gradient can vary depending on the time of year. The gradient of <br /> the uppermost ground water encountered during this investigation <br /> was approximately 0.01 feet per foot , which is indicative of a <br /> flat gradient. <br /> Kleinfelder has completed three hydrogeologic investigations <br /> within one mile of the 0/LD site and information from these <br /> projects along with information from the WQCB was used in the <br /> selection of monitoring well locations . <br /> During purging of the three monitoring wells on-site for the <br /> purpose of sampling, the well drawndown was small. This indi- <br /> cates either a good capacity for recharge within the aquifer the <br /> wells are completed or that the pumping rate was too low for the <br /> aquifer to be affected. Either of these factors along with the <br /> flat gradient beneath the site (20 feet per mile) indicates that <br /> ground water flow beneath the site is not significant in this <br /> upper aquifer. Because of the low movement of ground water, the <br /> location of the monitoring wells in the saturated zone on-site <br /> should provide an indication of the impact, if any, of the pond. <br />