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December 22, 1994 <br /> 92-1177103.80 <br /> NORCAL Waste Systems, Inc. <br /> Attention: Mr. Larry Sweetser, Director of Regulatory Affairs <br /> Subject: REPORT - Quarterly Groundwater Monitoring - November 1994 <br /> Stockton Scavenger Association Facility <br /> 1240 Navy Drive <br /> Stockton, California <br /> Page 5 <br /> the July monitoring period which showed the direction of groundwater flow was towards the <br /> east. There have been frequent changes in the groundwater flow pattern over the last six years. <br /> This recent shift in the direction of the groundwater flow appears to be consistent with previous <br /> trends. MARK reviewed past monitoring records to evaluate discernable patterns. The results <br /> of the evaluation are listed below: <br /> • Prior to the early months of 1990, groundwater appeared to flow towards the west <br /> and the southwest; <br /> ■ During 1990, groundwater flowed towards the east, then reversed its direction and <br /> by the end of 1990 flowed towards the west; <br /> ■ There are no available records for 1991; <br /> ■ In the early months of 1992, groundwater flowed toward the eastern direction, this <br /> pattern continued through the third quarter of 1994; and <br /> ■ Currently the direction of groundwater flow is toward the southwest. <br />