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kn KLEINFELDER <br /> • 3 FIELD ACTIVITIES <br /> 3.1. GROUNDWATER MONITORING WELLS INSTALLATION <br /> 3.1.1. PERMITTING AND PRE-FIELD ACTIVITIES <br /> A boring permit application was completed by Kleinfelder and submitted to the San <br /> Joaquin County Environmental Health Department (EHD) prior to installation of the <br /> monitoring wells and deep exploratory boring. Copies of the EHD permits are included <br /> in Appendix A. <br /> The site was visited by Kleinfelder staff to ascertain access for the drilling crews and <br /> mark the drilling locations. The site was marked for Underground Service Alert (USA) at <br /> least 48 hours prior to conducting the fieldwork. USA notified local utilities of our <br /> proposed drilling assessment. <br /> • 3.1.2. DRILLING AND MONITORING WELL INSTALLATION <br /> A total of eight monitoring wells (MW-1, MW-2, MW-3, MW-4, MW-6, MW-7, MW-8, and <br /> MW-9) were installed by V&W Drilling of Isleton, California under the direct observation of <br /> Kleinfelder staff, at the locations shown on Plate 2. MW-5 was not installed at this time <br /> due to muddy road conditions caused by recent rain and standing water from irrigation of <br /> the nearby field. The well locations were selected to address groundwater conditions in <br /> estimated upgradient and downgradient locations of the proposed lake layout. <br /> Groundwater in the vicinity of the project site was present at depths ranging from <br /> approximately 78.86 to 90.17 feet bgs. <br /> The soil borings were drilled with a truck mounted drill rig equipped with 8-inch hollow <br /> stem augers. During advancement of the soil borings, soil samples were collected at five- <br /> foot intervals for lithologic classification and possible laboratory analysis. Lithologic <br /> classification was based on the Unified Soil Classification System (USCS). Boring Logs <br /> are included in Appendix A. All equipment used in the drilling and installation procedures <br /> was cleaned and/or decontaminated as described in Appendix C. Soil cuttings generated <br /> from the drilling operation were not contained and were spread on site adjacent to the <br /> boreholes. <br /> Text Table 1 outlines the groundwater monitoring well designations and locations relative <br /> • to the existing property owners and associated Assessor Parcel Numbers (APN's). <br /> Page 6 of 20 <br /> 63138.H01/ST06R312/JDZ:Iv April 7,2006 <br /> ©2006 Kleinfelder, Inc. <br />