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µ Drilling Log <br /> IT CORPORATION Monitoring Well MW-1 <br /> A Member of the IT GroLip <br /> f See Site Map <br /> rolect 7-Eleven, SS# 14117 _ _ _ - Owner 7-Eleven, Inc _.,. - - For Boring titian <br /> Location 2725 Country Club Blvd, Stockton, CA Pro). No 7T9966 <br /> Surface Eley Total Hole Depth 30 ft Diameter 81n COMMENTS <br /> Top of Casing Water Level Initial 18 ft Static 78 ft <br /> Screen: Dia 2 in Length 20 ft Type/Size Sch. 4010 020 slot in <br /> Casing Ola 2 in Length 10 H Type Sch 40 PVC <br /> Fill Material 0.3 Sand Rig/Core 0-10/5plit Spoon <br /> Drill Co 6129A DriffirW Method Hollow Stem Auger <br /> Driler Chris Log By Jon Philp Date 05/13/99 Permit 0 <br /> Checked By Ed Simons License No. California RG04422 <br /> o a Description <br /> 410`- 0 �� Q ° a� <br /> C3 a i~ 3 L (Color, Texture. Structure) <br /> in Trace < 10%, Little 10Xr to 20%. Some 20% to 35%. And 35X to 50X <br /> —2 <br /> 0 2' Asphalt over sandy GRAVEL (30,70) brown, dry, loose, no <br /> c <br /> -low Gw hydrocarbon <br /> 2 lr 4tSilty CLAY (40,60) mottled dark gray, medium brown and olive, <br /> mostly dry, slightly plastic, no hydrocarbon odor <br /> CL <br /> 0 NH-%' 5 <br /> 6Sandy pebbly CLAY (10,30 60) brown slightly moist, stiff, no <br /> 9 hydrocarbon odor <br /> 8 Static 5/14/99 <br /> 0 NW-0104 Clayey SILT (40,60) olive brown, slightly moist, stiff, no <br /> 5L <br /> 10 s u hydrocarbon odor_ <br /> 12 <br /> 14 — 3 "�� 7 Clayey SILT (10,90). mottled brown and green, loose, faint <br /> s ML hydrocarbon odor (?) <br /> 16 <br /> 18 = Groundwater Encountered, 5/13/99 @930 hrs <br /> 1s NWARV 7 <br /> 20 = NII-i@2r 20 X Medium SAND (100) gray, wet loose, subrounded to subangular, no <br /> 7hydrocarbon odor, NO RECOVERY (heaving sand) <br /> f5 Y <br /> 22 — za <br /> SP <br /> 2 = 75 WANT 0 <br /> 24 <br /> 37 Medium SAND (100) green/gray wet loose faint hydrocarbon odor <br /> 26 with clay stringers (100) <br /> 28 - <br /> 20 Wt-100 15 ML <br /> 18 Clayey SILT (10,90) medium blue green, moderately loose, moist, <br /> L32l <br /> 35 no hydrocarbon odor <br /> 0e/16/1899 athiag-Har e9 Page I of I <br />