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I SECOR Intenianonal Incorporated Logged By Date Drilled Drilling Contractor Project Name Method/Equipment - - -- -Well Number ARCO Station#4932 HSA-Split Spoon D Harp Sf22/00 West Hazmat 16 E Harding Way,Stockton,C CME-75 SVE-1 See"Sod Clarification Chart" Boring Surface Groundwater Depth(ft) Total Drive Drop for Sod Classifications and pram(m} Elev(ft) 5Z 27 First Water Depth(ft) wt(lbs} Dist(in) Designations 10 1 27 6 Stabilized Warer 365 140 30 z Well 3 Description �_ a Construction a m a a CasinA Elev 40 well box o ASPHALT,GRAVEL,(AB)(0 to 3 0') cement a 0 A d o bentonite seal SILTY SAND(SM) Dark Olive Gray(5Y 312),fine grained,poorly graded,loose,dry,no hydrocarbon odor (40,3 5,25) 2" blank casing 5 5 SILTY SAND(SM) Olive Brown(2 5YR 413),fine grained, poorly 9 SVE-1 2" slotted 7 graded,slightly cohesive,medium dense, moist, hydrocarbon odor @5 0 020 casing 7 (40,35,25) 10— l0 SILTY SAND(SM) Olive Brown(2 SY 414), less clay,poorly 109 SVE-1 10 graded,non cohesive,dense,dry,faint hydrocarbon odor (50,40,10) @10 M 13 _y _g 1515 SILTY SAND(SIV): Dark Grayish Brown(2 5Y 412),poorly graded, 200 SVE-I 20 slightly cohesive,dense,motst,strong hydrocarbon odor (50,30,20) @IS 21 ~� r 20 12 SILTY CLAY(CL)- Very Dark Grayish Brown(2 5Y 312),staining, 234 @20 15 low plastictty,very stiff,moist,strong hydrocarbon odor (30,30,40) @20 > 19 y i The substrata descriptions above are generalized representations and based upon visual/manual 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 predominant 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 Iocations or times Project No 077 41983-330 Date 10/19/00 Log of Well 4932 GPJ Figure LOG OF BOREHOLE (sheet 1 of 2)