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I _ ; <br />TABLE 5 <br />WELL SURVEY <br />Production Wells Within 2,000 Feet <br />Name/Location <br />Type <br />Depth <br />California Canners & Growers <br />Industrial <br />N/A <br />11 <br />Plant #7 <br />N. "A' Street and E. Weber Ave <br />r <br />Roek Bros: <br />Industrial <br />220 feet , <br />1514 East Market <br />Stockton Metro <br />Industrial <br />80 feet <br />1533 East Lindsay <br />Municipal Well <br />Municipal <br />NIA <br />SW corner of Fremont Street and <br />Sierra Nevada Street <br />2 feet in each well since January 1994 The rise in groundwater levels is consistent with i <br />seasonal variations of groundwater depth <br />4.2 Groundwater Flow Direction and Gradient <br />Groundwater is highest in MW -2 and the flow direction is to the northwest The calculated <br />gradient is 0 00042 ft/ft oriented N 57° W (Figure 3) The gradient at the Site has been, and <br />remains, very shallow Therefore, slight variations in groundwater depths will cause dramatic <br />shifts in flow direction The current northwest flow direction is not unreasonable ;The flow <br />direction has shown considerable past variations, shifting from south-southwest to northwest <br />4.3 Groundwater Sample Analysis " <br />r <br />The analytical results of the groundwater samples are summarized in Table 5 No petroleum <br />hydrocarbons were detected in any of the wells for the fourth consecutive quarter The <br />' laboratory report and chain -of -custody are included in Appendix B <br />' 5.0 CONCLUSIONS & RECOMMENDATIONS <br />1 <br />I" 5.1 Petroleum Hydrocarbon Impacted Soil <br />r <br />As stated in the October 1993 Quarterly Report prepared by GeoAudit, trace concentrations <br />' of benzene (0 006 ppm) and toluene (0 007 ppm) were detected in an excavation soil sample <br />at a depth of 39 feet (Table 2), benzene (0 0079 ppm) was also detected in a soil sample <br />G -6S 1 Add S., I.. 10 <br />161f-9VMd-41 OR <br />4 <br />