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Quarterly Report - First Quarter 2004 <br /> . K& S GAS & GROCERY <br />' 701 East Charter Way, Stockton, California <br />' 1.0 INTRODUCTION <br /> At the request ofMr Khaldoon Othman,Advanced GeoEnvironmental,Inc (AGE)has prepared this <br />' monitoring well installation and quarterly report for the property located at 701 East Charter Way, <br /> Stockton, California The scope of work included the installation and development of three <br /> monitoring wells,performance of a quarterly ground water monitoring event and preparation of this <br />' report The site and the surrounding area are illustrated in Figure 1 On-site structures and monitoring <br /> well locations are illustrated on Figure 2 Additional site background information is summarized in <br />' Appendix A <br />' 2.0. PROCEDURES <br /> Fieldwork was performed in accordance with guidelines established by the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) for the investigation of underground storage tanks <br /> (UST) sites <br /> 10 2 1 MONITORING WELL INSTALLATION, DEVELOPMENT AND SURVEY <br /> Three ground water monitoring wells(MW-7 through MW-9)were installed on 12, 18 and 19 March <br /> 2004, they were surveyed on 01 April 2004 and developed on 05 April, 2004 <br /> 2 1 1 Drilling and Sampling <br /> The three pilot borings for monitoring wells MW-7 through MW-9 were advanced using a CME- <br /> 75HT drill rig (MW-7 and MW-9) and a CME-95 drill ng (MW-8), both equipped with 8 25-inch <br /> diameter hollow-stem augers The drill ngs and three-man crews were supplied by Cascade Drilling, <br />' Inc Auger returns generated by drilling were containerized in properly labeled Department of <br /> Transportation (DOT)-approved 55-gallon drums and stored on-site <br />' Soil samples were collected ahead of the drill bit using a California modified split-spoon sampler <br /> loaded with three pre-cleaned 2-inch by 6-inch brass sleeves The samples were collected from each <br /> boring at five-foot intervals, beginning at 5 feet below surface grade (bsg), using a 140-pound <br /> hammer to advance the sampler The number of blows required to advance the sampler over each <br /> 6-inch increment of the 18-inch sampling interval was recorded on the boring logs (Appendix B) <br />' Sampling equipment was washed in an Alconox solution and double rinsed with water prior to each <br /> sampling run to minimize cross-contamination <br /> Advanced GeoEnWronmental,Inc <br />