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n 1 <br /> f"'f SNrFN <br /> January 21, 1997 <br /> 94369 <br /> Ms. Linda Turkatte <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P. O. Box 388 <br /> Stockton, CA 95201-0388 <br /> Subject: Site Status Report, Fourth Quarter 1996, Smith Canal Pump Plant, Fontana Street <br /> and Smith Canal, Stockton, California, Site Code 1102 <br /> Ms. Turkatte: <br /> This letter report summarizes groundwater monitoring activities at the above referenced site <br /> (Figure 1) during the fourth quarter of 1996. These activities included monitoring fluid levels in <br /> all site wells and collectinggroundwater samples from wells MW3 and MW6 for laboratory <br /> � p <br /> analysis. <br /> FIELD WORK <br /> On October 22, 1996, static fluid levels were measured in monitoring wells MWi through MW6. <br /> The water table elevation decreased an average of 0.98 feet since July 24, 1996. Table 1 <br /> summarizes the water level data collected during the reporting period and provides previous data <br /> for comparison. <br /> A groundwater gradient map was created for the October 22, 1996 monitoring event (Figure 2) <br /> using groundwater elevation data from all the wells monitored. Figure 2 depicts a groundwater <br /> gradient of approximately 0.009 ft/ft (47 ft/mile) with a north-northwesterly groundwater flow <br /> direction. <br /> Floating petroleum product was observed in well MW4 on October 22, 1996. Approximately <br /> 2.2 liters of free product were recovered from the well. Table 2 summarizes the product <br /> thickness measurements and volume of product removed from previous monitoring events. All <br /> bailed product has been stored in a DOT approved double containment drum pending appropriate <br /> disposal, <br /> `1 <br /> w:1943G91quartlyl4gnu1996.doe 1 <br /> 1260 Graphics Drive Modesto,CA 95351-1502 (209)579-2221 Fax(209)579-2225 <br /> Engineering Consulting Remediation Construction <br />