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GRI (IN <br /> µt Of the gasoline-related compounds listed above, only x p Ylenes were detected in Y <br /> a groundwater sample obtained from boring BFS-2 (0 55 µg/l) <br />' 1.2 Objectives and Scope of Work <br />' The objective of the planned site assessment activities are to delineate the nature and <br /> extent of impacted groundwater at the site Orion will drill and install one groundwater <br />' monitoring well and perform a groundwater monitoring event at the new and three <br /> existing wells to meet this objective It is anticipated that these steps will complete the <br /> demonstration of a low risk site based upon plume mass and stability The proposed <br /> scope of work will include the following tasks <br />' ❑ Mark monitoring well location at the site and notify Underground Service <br /> Alert (USA) to identify subsurface utilities <br /> ❑ Obtain monitoring well permits from the SJCPHS-EHD <br /> ❑ Drill, install, and survey one groundwater monitoring well to a depth of <br /> approximately 25 feet below grade <br /> ❑ Perform one groundwater sampling event from the new and three existing <br /> wells <br /> ❑ Analyze the groundwater samples at a State-certified laboratory for <br /> ❑ Total petroleum hydrocarbons as gasoline (TPHg) using modified <br /> U S Environmental Protection Agency (EPA) Method 8015 <br /> ❑ BTEX using EPA Method 8020 <br /> ❑ Analyze soil samples for TPHg and BTEX and dispose of the well <br /> development and purge water <br /> ❑ Perform health and safety monitoring during field activities <br /> ` ❑ Evaluate groundwater monitoring data and prepare a report <br /> s <br />�' S\BFS\ST0CKTON\WKP003 DOC 03/22/01 1-2 <br />