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<br /> 30,Novem'ber 2005 ` a,a �f' ' Y `, '
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<br /> a AGE-NC Project No 96-Q235
<br /> Pa44 e 3 of,13
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<br /> down-gradient of the former southern'UST',area Borings,were advanced at the following locations
<br /> and depth
<br /> `;':-CPT-lO,and associated ground,water sampling boring were advanced near'the northern a
<br /> sidewalk of Clay Street, approximately 130 feet east of boring CPT-03 CPT-10 was
<br /> advanced to approximately 76 feet;bsg'and'was terminated due to refusal
<br /> CPT-11 and associated ground water'sam'pling`boring were advanced near the northern z,
<br /> sidewalk of Clay Street,approximately 80 feet east of boring CPT-03 CPT-11 was advanced
<br /> to approximately 75 feet bsg and'was terminated due to refusal
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<br /> CPT-12 and associated ground water sampling boring were advanced near the southern
<br /> Yi �r� t . sidewalk-,of Clay, Street, approximately_60 feet tsouth3,of boring CPT.-03 CPT-12 was _ r,4
<br /> advanced to approximately 185 feet bsg ` `
<br /> • CPT-13'and associated ground water,sampling boring were advanced near the southern o,'
<br /> sidewalk `of Clay Street, approximately 45 feet south 6f boring CPT-11 CPT-13 was
<br /> advanced to approximately 53'feet bsg and was terminated due to ref isal '
<br /> ' • Ground water sampling boring CPT-14 was advanced approximately 70 feet east of CPT-13
<br /> . _ to determine the lateral and CPT-14-was advanced to approximately 158 feet bsg and
<br /> ' 'terminated due to refusal
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<br /> CPT Borings were advanced utilizing CPT technology` to characterize the geological and
<br /> hydrogeological framework and to identify potential,contaminant-migration`pathways beneath the
<br /> site The,CPT investigation utilized a 25-ton truck-mounted CPT drill rigequipped with 1 X50-inch!
<br /> diameter,hollow-stem rods 'A hydraulic ram,was" ilized to m
<br /> advance a cone penetroeter tip
<br /> attached to the}hollow-stem rod assembly*to total depth of each soil Boring The soil parameters of
<br /> ';cone penetrometer tip resistance` ,'sleeve friction and pore water pressure were continuously measured.
<br /> i ,as the cone penetrometer was advanced to depth ;Continuous boring logs were generated,,
<br /> i' 'the Hogentogler Cd CPT computer prograri The Hogentogler Co computer program utilized the
<br /> ' CPT Soil Behavior Classification System (Robertson; P K ,' Campanella, R G, Gillespie, D and
<br /> ,a Greig, J ,k 1986) to generate-a general lithology',type �and display,on a CPT boring,log (See
<br /> Appendix B}1%:
<br /> Five soil borings were advanced adjacent to respective initial CPT borings (were established) for ,
<br /> rcollection ol;grab ground water samples The sampling interval depth for boring CPT-14 was based
<br />' on the'iithologic sounding data of CPT-10 and CPT,-13 The depth below grade-for the gio6nd water
<br /> sampling intervals were based on the CPT litliologic sounding data (Figure 2) Grab groundwater
<br /> samples were collected utilizing the 25-ton truck-mounted CPT drill'rig equipped with 1 75-inch
<br /> ' ' diameter hollow;stem,rods fitted with a Hydro,Punch ground water sampling assembly,which was ,
<br /> pushed to specified sampling depths in each`soil boring
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<br /> Advanced GeoEnvironmenta],Inc
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