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' Quarterly Report - Fourth Quarter 2004 <br /> • CHEROKEE TRUCK STOP <br /> » h 3535 East Cherokee Road, Stockton;California <br /> I» 1 N ✓ ` (W � r <br /> 1 <br />' 1.0. INTRODUCTION <br /> At the request of Mr Ellis Cecchirn of Cecchim, Cecchim, and Glovannonl, Advanced <br />' GeoEnvlronmental, Inc (AGE) has prepared this report of environmental activities performed at <br /> 3535 East Cherokee Road,Stockton,California during the fourth quarter of 2004 The scope of work <br /> included conducting a quarterly ground water monitoring event and preparation of this report The <br /> site setting is illustrated on Figure 1 Structures, monitoring wells, and soil boring locations are <br /> illustrated on Figure 2 Background information was summarized in the AGE-prepared Problem <br /> Assessment Report, dated 16 August 2001 <br /> 1 t � <br /> At the request of the San Joaquin County Environmental Health Department(EHD),Cherokee Truck <br /> Stop quarterly ground water monitoring events are coordinated to occur concurrently with ground <br />' water monitoring activities at the adjacent Moore Truck Lines property (3400 Newton Road) ; <br />' 2.0. PROCEDURES <br /> On 17 November 2004, six ground water monitoring wells and the "large" on-site domestic well <br /> were monitored,however,due to a seasonal low water table level,only five of the wells were purged <br /> and sampled Field work was performed in accordance with the Central Valley Regional Water <br />' Quality Control Board (CVRWQCB) and EHD guidelines for the investigations of underground <br /> storage tank (UST) sites and sampling ground water monitoring wells, respectively <br />' 21 ' WELL MONITORING AND EVACUATION <br />' On 17 November 2004, a Solinst water level meter was used to measure the depth to ground water <br /> relative to the tops of the well casings in six monitoring wells in the area of the former UST <br /> locations The ground water elevation in wells UST-2 through UST-6 and ground water flow <br />' direction for the site were determined from the data collected (Table 1) <br /> After measuring ground water depths, monitoring wells UST-2 through UST-7 were purged using <br />' a Waterra inertial pump and dedicated tubing Between 175 and 10 25 gallons of water(a minimum <br /> of three casing-water volumes per well) were removed from wells UST-2 through UST-4, UST-6 <br /> and UST-7,UST-5 was purged dry after 0 75 gallons were removed Ground water was purged from <br />' near the top of the water column to remove water trapped within the un-screened interval of the well , <br /> casings Temperature, pH,and conductivity of the purged water were measured at regular intervals <br />' during purging using an Oakton water analyzer The recorded field data and logs are included in ' <br /> Appendix A Purged water was stored on-site in 55-gallon Department of Transportation (DOT)- <br /> approved drums pending proper disposal <br />' Advanced GeoEnvironmental,Inc <br /> ti ry <br /> 1 j <br />