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sEcoR International Incorporated =DH Date Drilled Drilling Contractor Project Name Method/Equipment Well Number CASCADE TOSCO 8671 HOLLOW STEM AUGER 12/13/01 DRILLING STOCKTON,CA SPLITSPOON MW-6 See"Legend to Logs"for Boring Surface Groundwater Depth(ft) Total Drive Drop sampling method, Dram(in) Elev(ft) 34 5 FIRST Depth(ft) wt(lbs) Dist(in) classifications and laboratory 8 12 20 TOC sun methods t 31 1 STABILIZED 450 140 30 te � O Well = 8 �, Construction ' 3 Description 17 low plasticity,very stiff,dry,no odor(0,40,50,10) @25' 17 15 SILTY SAND (SM) olive brown(2 5Y4/3),fine-grained sand, 0 MW6 30 17 dense,slightly moist,no odor(0,60,35,5) @30' ` 18 i 14 SANDY SILT(ML) brown(10YR4/3),fine-grained sand,low 0 MW6 2 35 17 plasticity,very stiff to hard,very moist to wet,no odor(0,35,55,10) @35' SLOTTED 15 SCREEN 15 SILTY SAND (SM) dark yellowish brown(10YR3/4),fine-to 0 MW6 40 17 medium-grained sand,dense,wet,moderately graded,no odor @40' 19 (0,60,30,10) SAND (SP) olive brown(2 5Y4/4),medium-grained,dense,wet, poorly graded,mottled with oxidized minerals and black organic 17 streaks,no odor(0,90,5,5) 0 M THREADED 4g 18 @455' END CAP 18 The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or samples obtained dunng drilling Predominant material types shown on the log may contain different materials and the change from one predominant material type to another could be different than indicated Descriptions on this log apply only at the specific location at the tithe of drilling and may not be representative of subsurface conditions at other locations or times Protect No 077 43791 222 Date 12/31/01 PR Log of Well � 8671 MW6 GPJ Approved by LOG OF BOREHOLE Figure (sheet 2 of 2)