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SECOR lnternghorutl fico ratted . Logged By are Dnlled Drilling Contractor Project Name Method/Egwpment Well Number GREGG ARCO#4493 HOLLOW STEM AUGER BH 5/6/02 DRILLING STOCKTON,CA SPLITSPOON MW-M'D See"Legend to Logs"for Bonng Surface Groundwater Depth(ft) Total Drive Drop sampling method, Dram(in) Elev(ft) 17 FIRST Depth(ft) wL(lbs) Dtst(in) classifications and laboratory 10 56.0 140 30 testin th � o � Well Description Construction 4 8 C � TRAFFIC SILTY SAND(SM)-brown(7 5YR412),fine-grained sand,loose,moist,no RATED hydrocarbon odor(0,75,25,0) WELL BOX 5 SANDY CLAY(CL) dark olive brown(2 5Y313),fine-grauned sand,firm,moist, low plasticity,no hydrocarbon odor(0,25,15,60) 0 SILTY CLAY(CL) ohve brown(2 5Y4/3),firth,moist,low plasticity,no hydrocarbon odor(0,0,20,80) 10 0 SILTY SAND(SM) dark brown(25Y411),fine-to medium-gramed sand,dense, moist,poorly graded(0,75,25,0) GROUT SILTY CLAY(CL):dark gray(2 5Y4/1),firm,moist,low plasticity,no hydrocarbon odor(0,0,40,60) SILTY SAND(SM) dark gray(2SY4/1),fine-grained sand,very moist,moderate hydrocarbon odor(0,75,25,0) 15 0 V Stabilized water at 16 00 feet bgs in well MW-8M Stabilized water at 17.34 feet bgs in well MW-81) S ame as above saturated slight hydrocarbon odor 0 75 25 0 20 Flowing sands,sampling discontinued 0 See boring log B-1 for soil stratigraphy ° The substrata descriptions above are generalized representations and based upon visuallmanual classification of cuttings and/or samples obtained during drilling Predominant material types shown on the log may contain different materials and the change from one predommant material type to another could be different than indicated Descriptions on this log apply only at the specific location at the time of drilling and may not be representative of subsurface conditions at other locations or times Project No 77BP 43036 00 0320 Date 5/31102 PR Log of Well 4493MW8 GP3 Approved by LOG OF BOREHOLE Figure (sheet 1 of 3)