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VkTc <br /> 1260 Graphics Drive <br /> Modesto, California <br /> 95351 <br /> 209.579.2221 M <br /> f f Fax 209.579.2225 <br /> ( <br /> �f A S S O C I A T E S I N C . <br /> March 23, 1998 <br /> 62574 <br /> Mr. Jeff Wong <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, First Quarter 1998, Smith Canal Pump Plant, Fontana Street <br /> and Smith Canal, Stockton, California, Site Code 1102 c <br /> Mr. Wong: <br /> This letter report summarizes groundwater monitoring activities at the above referenced site <br /> -a (Figure 1) during the first quarter of 1998. These activities included monitoring fluid levels in all <br /> site wells and collecting groundwater samples from wells MWI, MW2, MW3, MW5, and MW6 <br /> for laboratory analysis. <br /> FIELD WORK <br /> On January 9, 1998, static fluid levels were measured in monitoring wells MW 1 through MW6. <br /> The water table elevation increased an average of 0.90 feet since October 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 January 9, 1998 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 at a magnitude of approximately 0.008 ft/ft or 43 ft/mile. <br /> Floating petroleum product was observed in well MW4 on January 9, 1998. No free product <br /> was recovered from the well because the quantity was too small to be collected into a bailer. <br /> Table 2 summarizes the product thickness measurements and volume of product removed from <br /> previous monitoring events. All bailed product has been stored in a DOT approved double <br /> containment drum pending appropriate disposal. <br /> Groundwater samples were collected on January 9, 1998 from wells MW1, MW2, MW3, MW5, <br /> and MW6. No groundwater sample was collected from MW4 due to the presence of free <br /> w:1943691quartly\1gmr1998.doc 1 <br />