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.,o <br /> 3.0 SITE WORK PLAN <br /> The following sections describe in detail the tasks to be conducted in the performance of this <br /> work plan. The scope of work is designed to meet the objectives for this phase of the project as <br /> outlined above. <br /> 3.1 Planning and Permits <br /> The work plan and HASP will submitted to the CRWQCB for their review and approval. Upon <br /> their approval, monitoring well installation permits will be obtained from the San Joaquin <br /> County Public Health Services, Environmental Health Division (PHS\EHD). Notification will <br /> be made to Underground Service Alert (USA)to mark out all underground utilities in the vicinity <br /> of anticipated drilling locations if required.. <br /> 3.2 Monitoring Well Installation and Sampling <br /> AGS proposes to install three ground water monitoring wells to determine the possible impacts <br /> to ground water caused by former dairy at the site. <br /> The following sections describe the installation, sampling and analysis to be performed for each <br /> monitoring well installed. <br /> 3.2.1 Monitoring Well Installation <br /> Monitoring well installation permits will be obtained, as necessary, for the monitoring wells <br /> before drilling begins. Underground Service Alert (USA) will be notified at least 48 hours in <br /> advance of the drilling to mark all underground utilities in the vicinity of anticipated boring <br /> locations. All overhead utilities or other obstructions will be noted and referred to the driller <br /> prior to rig setup on any boring location. <br /> Each monitoring well boring will be advance using a hollow stem auger drill rig with a minimum <br /> outside hole diameter of eight inches. Each boring will be advanced to a depth of approximately <br /> fifteen feet below the ground surface. Chip samples will be collected at five feet intervals for <br /> logging purposes and retained for future reference. <br /> After completion of the boreholes, they will be completed as ground water monitoring wells. <br /> The ground water monitoring wells will be constructed of 2-inch inside diameter (ID), flush <br /> threaded schedule 40 PVC casing and 0.02-inch factory perforated screen. A filter pack of clean <br /> #3 silica sand will be installed in the annulus of the well boring from the base of the well boring <br /> to approximately one foot above the screened interval. A one foot thick seal of bentonite chips <br /> will be installed in the boring annulus above the sand filter pack and hydrated with potable water. <br /> American Geological Services, Inc. <br /> CA96DE-055 <br /> •• 5 <br />