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SNrFN <br /> ENUlR4NMENTALTECHNDLDGIESCORPDRATION <br /> May 20, 1996. <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, Second 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 second quarter of 1996. These activities included monitoring fluid levels in <br /> r:f all site wells and collecting groundwater samples from wells MW1, MW2, MW3, MWS, and <br /> MW6 for laboratory analysis. <br /> FIELD WORK <br /> On April 30, 1996, static fluid levels were measured in monitoring wells MWl through MW6. <br /> The water table elevation increased an average of 1.98 feet since October 3, 1995. 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 April 30, 1996 monitoring event (Figure 2) <br /> using groundwater elevation data from all the wells monitored. The groundwater elevation in <br /> MW4 appears to be anomalous, possibly due to a depression caused by the floating product <br /> measured in the well. Figure 2 depicts a groundwater gradient of approximately 0.003 ft/ft (16 <br /> ft/mile)with a northerly groundwater flow direction. <br /> Floating petroleum product was observed in well MW4 on April 30, 1996. Approximately 8.5 <br /> liters of free product were recovered from the well. Table 2 summarizes the product thickness <br /> measurements and volume of product removed from previous monitoring events. All bailed <br /> product has been stored in a DOT approved double containment drum pending appropriate <br /> disposal. <br /> _lf <br /> w:1943691quartlyl2gmr1996.doc 1 <br /> 1260 Graphics Drive Modesto,CA 95351-1502 (209)579-2221 Fax(209)579-2225 <br /> Engineering Consulting Remediation Construction <br />