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'(VYATC <br /> A S S O C I A T E S I N C . <br /> Soil Borin¢Advancement and Sample Analysis <br /> To evaluate the extent of impacted soil and groundwater at the site, five soil borings will be <br /> advanced to first encountered groundwater, estimated at approximately 10 to 15 feet bgs. The <br /> five soil borings will be placed on the parcel immediately north of the site at the locations shown <br /> on Figure 2. <br /> The soil borings will be advanced employing direct push technology (DPT) utilizing a truck <br /> mounted Geoprobe® soil probing unit to depths of approximately 15 feet below ground surface <br /> (bgs). Drilling will be conducted by a State licensed (C57) drilling company. A field geologist <br /> will be present to log soil samples. Descriptions of soil types encountered and sample collection <br /> intervals will be recorded on boring logs. Soil samples will be collected at five-foot intervals or at <br /> the soil/water interface. Each soil sample will be field screened with a Photoionization Detection <br /> (PID) meter or similar instrument and one soil sample from each boring, based on field <br /> observations (i.e. odor, discoloration, PID readings), will be placed in a cooler with ice and <br /> submitted for laboratory analysis. <br /> One groundwater sample will be collected from each boring at the depth groundwater is first <br /> encountered, anticipated to be approximately 10 to 15 feet bgs. A Geoprobe® Screen Point 15 <br /> Groundwater Sampler will be threaded onto the leading end of the Geoprobe when the <br /> groundwater is encountered. While the sampler is advanced, O-ring seals and an expendable drive <br /> point will provide a watertight system to ensure sample integrity. <br /> When the tool has been advanced to the desired depth, extension rods will be sent downhole to <br /> brace the bottom of the sample screen as the tool casing is retracted. When the casing is <br /> retracted, up to 41-inches of screen with slot sizes of 0.004 inches will be exposed. Teflon tubing <br /> with a check valve attached to one end will be inserted down the casing until it is immersed in <br /> groundwater. Water will then be pumped through the tubing and to the ground surface by <br /> oscillating the tubing up and down. <br /> Following soil and groundwater sample collection, the borings will be backfilled with neat cement <br /> grout to the ground surface. All drill cuttings, if any, will be stored on-site in a 5-gallon container <br /> pending laboratory results. <br /> The selected soil and groundwater samples will be immediately placed in a cooler with ice and <br /> delivered under chain-of-custody documentation to a State-certified analytical laboratory. <br /> Samples will be analyzed for total petroleum hydrocarbons as diesel (TPHd) by EPA Method <br /> 8015 modified. <br /> w:\62574\62574.02\reports\pumpwkp.doc 4 <br />