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CanonleEn�� _ t i _ patal <br /> `� � r, '� �f <br /> 9S T" <br /> PH t: <br /> Canonie Environmental Services Corp- <br /> 1710 Main Street <br /> Escalon, California 95320 <br /> Phone: 209-838-3507 <br /> Phone: 800-926-0806 <br /> January 30, 1995 Fax: 209-838-3509 <br /> 150115.01 <br /> Ms. Linda Turkatte <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P. O. Box 2009 <br /> Stockton, CA 95201 <br /> Subject: Fourth Quarter 1994 Monitoring and Sampling Report, Site Code 1102, Smith <br /> Canal Pump Plant, Fontana Street and Smith Canal, Stockton, California <br /> Ms. Turkatte: <br /> This letter report summarizes groundwater monitoring activities at the above referenced site (Plate <br /> 1) during the fourth quarter of 1994. These activities included monitoring fluid levels in all site <br /> `4-- wells and collecting groundwater samples from wells MW3 and MW6 for laboratory analysis. <br /> FIELD WORK <br /> On November 29, 1994, static fluid levels were measured in monitoring wells MW 1 through <br /> MW6. The water table dropped an average of 1.61 feet from April 25, 1994 to November 29, <br /> 1994. Table 1 summarizes the water level data collected this quarter and provides previous data <br /> for comparison. <br /> E <br /> A groundwater gradient map was created for the November 29, 1994 monitoring event using a <br /> kriging program (Plate 2). The figure depicts a northwesterly gradient which averages <br /> approximately 0.012 ft/ft or 63 feet per mile, which is generally consistent with historical <br /> groundwater data. <br /> Floating petroleum product was observed in well MW4. Approximately 0.20 liters of free <br /> product was recovered. Table 2 summarizes the product thickness measurements and volume of <br /> product removed. All bailed product has been stored in a DOT approved double containment <br /> drum pending appropriate disposal. <br /> Groundwater samples were collected on November 29, 1994 from wells MW3 and MW6. No <br /> groundwater samples were collected from MW4 due to the presence of free product. Prior to <br /> �i <br /> sample collection, each sampled well was purged of a minimum of three well casing volumes of r <br /> water. Purged water was contained in labeled 55 gallon drums (DOT H), and stored on-site. <br /> V <br /> 1501151QRT$RUYI4QMR 1994.doc <br /> S <br /> G <br />