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1 <br /> It <br /> Quarterly Report - Second Quarter 2004 <br /> • M CHEROKEE TRUCK STOP <br /> 3535 East Cherokee Road, Stockton, California <br /> r <br />' 1.0. INTRODUCTION <br /> At the request of Mr Ellis Cecchini of Cecchini, Cecchini and Glovannom, Advanced <br />' GeoEnvironmental, Inc (AGE) has prepared this report for field work performed at 3535 East <br /> Cherokee Road,Stockton,California,during the second quarter of 2004 The scope ofwork Included <br /> conducting a quarterly ground water monitonng event and preparation of this report <br /> I , <br /> The site setting is Illustrated on Figure 1 Structures, monitoring wells and soil boring locations are <br /> F <br /> Illustrated on Figure 2 Background information was summarized in the AGE-prepared Problem <br /> Assessment Report, dated 16 August 2001 <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 /> I <br /> 3 <br /> 2.0. PROCEDURES <br /> On 03 June 2004,six groundwater monitoring wells and the large on-site domestic well were purged <br /> and sampled Field work was performed in accordance with the Central Valley Regional Water <br /> I 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 /> 2 1 WELL MONITORING AND EVACUATION s <br />' On 03 June 2004,a Solinst water level meter was used to measure the depth to ground water relative <br /> to the tops of the well casings in six monitoring wells in the area of the former UST locations The <br /> ground water elevation in wells UST-2 through UST-6 and ground water flow direction for the site <br />' 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 Watera inertial pump Between 4 and 13 gallons of water were removed from wells UST-2 through' <br /> 'UST-7 (a minimum of three casing-water volumes per well) Ground water was purged from near <br />' the top of the water column to remove water trapped within the,unscreened interval of the well <br /> casings Temperature,pH and conductivity of purged water were measured at regular intervals during <br /> 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 laboratory analysis <br /> a r <br />' Advanced GeoEnvironmental,Inc <br /> I a F <br /> F <br />