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r <br /> Drilling Log <br /> I IT CORPORATION Monitoring Well SPV-1 <br /> ' A Member o/ the IT Group <br /> Prosect -Eleven ES1117334 <br /> Owner 7-Eleven me See Site Map <br /> Location 4501 N Pershioq Stockton CAProf No 779950 For Boring Location <br /> Surface Elev Total Hole Depth 30 0 Diameter f0 'n COMMENTS <br /> Top of Casing Water Level Initial 23 ft Static <br /> Screen Dia 2 Length 5/10 ft Type/Size PVC 0 020 in SPV-1=Double nested 25-30 feet <br /> Casing Dia 2 fn length 25/ 7 ft Type Sch 40 PVC Shallow 7-11 feet <br /> Fill Material 2/12 Sand/Bent/Neat Cement Rig/Core Truck Mounted 6800 Geoprobe <br /> Drill Co l rrooei Method NSA - 10 <br /> Driller Steve Log By Kim Metez Date 04/04/02 Permit # <br /> Checked 8y Ed Simonis License No Callforn,a RG#4422 <br /> t.. � � Df U f0 <br /> aw acv o4 v o a ap U Description <br /> O.� a CL E v N� rn <br /> (Color, Texture, Structure) <br /> CD � Trace < 10%, Little 10% to 20%, Some 20% to 35% And 35% to 50% <br /> U m ae <br /> - -2 —� <br /> i0 1� <br /> A <br /> A No soil samples to 27 feet Sc;i SamQle descr, roST <br /> n �a� '-f <br /> 2 < < i s '�a�t2n ��ohn moo,l �s►mss 55-1 Eoq <br /> A A <br /> 4 <br />' 6 CL Sandy silty CLAY (20 30 50) brown sfightly moist <br /> - Grades vai y SAND/SILT/CLAY ratios avei age near clayey SILT <br /> 8 - (-30 70) brown, permeability low but not zero <br /> CL <br /> 10 ML <br /> r - <br /> 12 <br /> 1 - <br /> - 14 — - <br />' 16 <br /> Sandy silty CLAY (20 40 40) degraded hydrocarbon odor <br /> CL increasing with depth <br /> 18 <br /> Grades sandy silty CLAY (10 40 50) <br />■ 20 <br />■ Clay sandy SILT (15 25 60) mottled gi ay brown slight to no <br /> hydrocai bon odor <br /> 22 <br /> CL <br /> Whitish very calcareous layers moist/wet, soft, slighity plastic, <br /> p slight degraded odor <br /> — 24 <br /> ray <br /> 05/22/2002 i hlog-Mar 09 <br /> Page 1 of2 <br />