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Site Discovery <br /> LSoi' <br /> borings to determine lateral GW< WQOs Soil Case: assess human health <br /> vertical extent; groundwater risk and interact with County <br /> ening <br /> GW>_WQOs <br /> Groundwater Case: determine <br /> lateral and vertical extent in <br /> groundwater <br /> ® Install monitoring wells; <br /> implement quarterly <br /> groundwater monitoring <br /> program <br /> Assess human health risk <br /> © After four quarterly monitoring <br /> events, compare site data to <br /> RWQCB Low Risk Criteria; EXPLANATION <br /> document site conditions in <br /> remedial strategy/feasiblitiy WQOs= RWQCB Water Quality Objectives <br /> study or closure request for protection of beneficial use of <br /> groundwater <br /> Figure <br /> OLD VALLEY PIPELINE SITE EVALUATION FLOW CHART 2 <br /> GEOMATRIX Chevron Pipe Line Company Project No. <br /> 3761 <br /> an,i M1 <br />