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t r <br /> = � ENVIRONSMTH <br /> MENTAL TECHNOLOGIESCaRPORATION <br /> November 18, 1997 <br /> 94369 <br /> Mr. Steve Sasson <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E. Weber Avenue, 3rd Floor <br /> Stockton, CA 95202 <br /> Subject: Site Status Report, Fourth Quarter 1997, Smith Canal Pump Plant, Fontana Street <br /> and Smith Canal, Stockton, California, Site Code 1102 <br /> Mr. Sasson: <br /> This letter report summarizes groundwater monitoring activities at the above referenced site <br /> (Figure 1) during the fourth quarter of 1997. These activities included monitoring fluid levels in <br /> all site wells and collecting groundwater samples from wells MW3 and MW6 for laboratory <br /> analysis. <br /> FIELD WORK <br /> On October 2, 1997, static fluid levels were measured in monitoring wells MW1 through MW6. <br /> The water table elevation decreased an average of 0.69 feet since July 2, 1997. 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 2, 1997 monitoring event (Figure 2) <br /> using groundwater elevation data from all the wells monitored. Figure 2 depicts a general north- <br /> northwest groundwater flow direction. <br /> Floating petroleum product was observed in well MW4 on October 2, 1997. Approximately <br /> 0.200 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 /> Groundwater samples were collected on October 2, 1997 from wells MW3 and MW6. No <br /> groundwater sample was collected from MW4 due to the presence of free product. Prior to <br /> v J1 <br /> w:1943691quarllyl4gmr1997.doc <br /> 1260 Graphics Drive Modesto, CA 95351-1502 (209)579-2221 Fax(209)579-2225 <br /> Engineering • Consulting • Remediation Consfruction <br />