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1 <br /> ' onsite source areas And the groundwater grab data will be used as a screening tool to <br /> characterize water quality across the Site and offsite <br /> ' 4.2.1 Soil Sampling <br /> Soil samples will be collected onsite using a hand auger or direct push technique <br /> ' Approximately 6 soil samples will be collected at a depth of about 2 5 feet bgs around the <br /> Sherwin Williams building and approximately 10 soil samples collected in the undeveloped <br /> portion of the Site at approximately 4 5 feet bgs This deeper sample depth in the undeveloped <br /> area is to compensate for the estimated 2 feet of fill placed during excavation of the storm water <br /> ' basin The approximate height of the fill will be confirmed prior to sampling In addition,4 <br /> deeper soil samples (10-foot depths) will be collected at select locations for correlation with the <br /> ' previous data collected The approximate sample locations are shown on Figure 3 <br /> ' . Soil samples will be collected using plastic or stainless steel sample sleeves and logged in <br /> general accordance with the visual-manual procedure for soil classification ASTM D2488 <br /> ' Visual observations will include documenting the presence of hydrocarbon staining and <br /> identifying any unusual odors The borings will be tremie grouted (from the bottom up)using a <br /> ' cement grout The soil samples will be tested for TPH-gasoline, TPH-diesel, TPH-motor oil, <br /> BTEX, and MTBE as described in Table 1 <br /> 1 <br /> 4.2.2 Groundwater Grab Sampling <br /> ' Groundwater grab samples will be collected at approximately 8 onsite locations and at about 10 <br /> toffsite locations (Figure 3) Additional borings will be drilled as needed Samples will be <br /> collected using a Hydropunch® sampling system, or equivalent (Figure 3) The sampling system <br /> ' includes installing a 1 75-mch diameter stainless steel filter screen at the desired depth A <br /> groundwater sample is then collected using a new disposable bailer The sample screens will be <br /> ' placed within the first water, generally between 7 and 10 feet bgs Four deeper groundwater grab <br /> samples will be collected at depths between 16 and 19 feet at select locations PVC slotted <br /> ' casing may be temporarily placed in the hole if water recovery is slow <br /> Field Investigation Work Plan 7 2 September 2003 <br /> ' TREADWELL&ROLLO,INC <br />