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rin KLEINFELDER <br /> ' 4 FIELD ACTIVITIES <br /> r <br /> r4.1. PRE-FIELD ACTIVITIES <br /> Kleinfelder prepared a workplan for First Service Properties, for review and approval by the San <br /> rJoaquin County Environmental Health Department (EHD) in accordance with the EHD well <br /> permit requirements. Kleinfelder prepared the drilling permit application and Master File Record <br /> r for First Service Properties and submitted it to EHD along with the required fees. A copy of the <br /> permit to drill is found in Appendix A. <br /> r Underground Service Alert was contacted prior to conducting fieldwork to notify local utilities of <br /> our proposed subsurface work. Kleinfelder additionally arranged for a private utility locator <br /> service to clear the area inside the fenced boundary of the site. <br /> 1 <br /> 4.2. MONITORING WELL INSTALLATION <br /> ' Three soil borings were drilled with a hollow stem auger drill rig equipped with 8-inch outside <br /> diameter hollow stem augers. Soil samples were collected every five feet from each soil boring <br /> for lithologic classification and potential laboratory analysis. Samples were collected by <br /> advancing the boring to a point immediately above the desired sampling depth and then driving a <br /> diameter split-spoon sampler, lined with three 2-inch diameter by 6-inch long stainless steel <br /> tubes, into the undisturbed soil. The sampler was then removed from the bottom of the boring. <br /> Representative soil samples were collected for lithologic analysis. <br /> rKleinfelder installed a monitoring well in each of the three soil borings. Table 1 outlines <br /> groundwater monitoring well designations, locations and rationale for their placement. <br /> ' Text Table 1 <br /> Monitoring Well Locations <br /> ' <br /> M <br /> ell Location Monitoring Rationale <br /> Southeast corner of site Pro osed down radient location <br /> Northern ortion of site Pro osedu Southwest onion of site Pro osed u radient location <br /> rMonitoring well MW-1 was advanced near the southeast corner of the site. The location of MW-1 <br /> was chosen based on a regional groundwater flow and was proposed to be the downgradient <br /> rmonitoring point. MW-2 was advanced near the northern portion of the site. The location of <br /> MW-2 was proposed to be the upgradient monitoring point. MW-3 was advanced near the eastern <br /> ' 42162.E01/ST04R854 Page 9 of 22 <br /> Copyright 2004,Kleinfelder,Inc. July 1,2004 <br /> 1 <br />