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ARCADIS LOG OF BORING NP-1 <br /> GERAGHTY&MILLER (Page 2 of 4) <br /> ' Unocal Site#2859 Date Completed January 8 1999 Drill Rig <br /> 1665 Pacific Avenue Logged By Reinhard Ruhmke Driller Van <br /> Stockton,Califomia Chocked By Stephen Cullen Diameter 825 inches <br /> CemDrilling Company Woodward Drilling Backfill Material rout Modure ite <br /> ' Grout Madura <br /> S8400070 0003 Drilling Method Hollow-stem Auger <br /> ' <br /> Well NP-1 <br /> c <br /> Depth ati PID* Eiev <br /> Feet <br /> E (ppm) v ¢ DESCRIPTION REMARKS <br /> Fast Lab No i rn D <br /> 25 18 CLAYEY FINE SANDS,some silts, <br /> ' 201 5 0 mottled brown/gray,slightly moist, Color change at 26 <br /> 50 Increase in hardness <br /> Sc <br /> 1 _ - <br /> 30 12 ------------------------- 11"® 15 0 - - 1"schedule <br /> ' SANDY CLAY,fne grained sands, Drive aimulprobe- _ 40 PVC <br /> 22 mottled brown/gray-,water on bottom Dry <br /> plug <br /> 35- C <br /> 16 L <br /> ' 38 ® 15 285 SANDY CLAY,fine sand,mottled <br /> so gray/brown,moist,fine <br /> ' - CemenVBentonde <br /> Grout <br /> (5%bentonite <br /> 40 SANDY SILT,trace gravel,mottled Powder,45 gal) <br /> ' <br /> 192® grey/brown moist to wet fine sand = <br /> Inclusions,firm,moderate Dry ssmulprobe <br /> cementation Dry <br /> ML45, - - <br /> ' 18 ® SANDY SILT,trace gravel,mottled 5 228 <br /> 50 greylbrown,moist to wet fine sand <br /> inclusions,firm,moderate - - <br /> cementation <br /> 1 $ <br /> 50 <br /> m <br /> Note <br /> All measurements <br /> for well constructs <br /> are depth below <br /> s ground surface <br />