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I <br /> Multi-Level Monitoring Well Installation Report - Third Quarter 2001 <br /> • TOP FILLING STATION <br />' 101 South Wilson Way, Stockton, California <br />' 1.0. INTRODUCTION AND SCOPE OF WORK <br /> Advanced GeoEnvironmental, Inc (AGE) has prepared this ground water monitoring well <br />' installation report for 101 South Wilson Way (site), Stockton, California The report documents <br /> procedures and results for installation of multi-level ground water monitoring wells at the site in <br /> September and October 2001 The location of the site is illustrated in Figure 1, general features at <br /> the site are illustrated in Figure 2 <br />' The scope of work of this investigation included installation of two multi-level ground water <br /> monitoring wells with the objective of assessing the impact of petroleum hydrocarbons to soil and <br /> ground water This report has been prepared in accordance with guidelines issued by the California <br />' Regional Water Quality Control Board (RWQCB) - Central Valley Region for investigations of <br /> underground storage tank(UST)sites A summary of previous investigations at the site was included <br /> in Work Plan Addendum -June 2001, dated 11 June 2001, prepared by AGE <br /> The following is a brief summary of events for the September and October 2001 well installations <br /> fperformed at the site <br />■• • 25 September 2001 - Soil boring MW-6 advanced to 150 feet below surface grade(bsg)with <br /> continuous core logging and collection of soil samples, the soil boring was completed as <br /> multi-level monitoring well MW-6 (A, B, C, D & E) <br /> 26 September 2001 - Soil boring MW-7 advanced to 150 feet bsg with continuous core <br /> logging and collection of soil samples, the soil boring was completed as multi-level <br /> monitoring well MW-7 (A, B, C, D & E) <br /> • 09 October 2001 - Well development activities performed at MW-6 (A, B, C, D & E) and <br /> fMW-7 (A, B, C, D & E) <br /> • 25 October 2001 - Elevation survey of MW-6 (A, B, C, D & E) and MW-7 (A, B, C, D & <br /> E) <br /> • 30 October 2001 - Initial ground water monitoring and sampling activities performed at <br /> multi-level monitoring wells MW-6 (A, B, C, D & E) and MW-7 (A, B, C, D & E) <br /> 20. DRILLING AND SAMPLING PROCEDURES <br /> I On 25 and 26 September 2001, multi-level ground water monitoring wells MW-6 and MW-7 were <br /> installed at the site, soil sampling was performed utilizing a continuous macro-core soil sampler <br /> • during drilling Soil borings MW-6 and MW-7 were advanced vertically to depths of 150 feet bsg <br /> IAdvanced GeoEnvironmental,Inc <br />