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<br /> Logged By Date Drilled Drilling Contractor Project Name Method/Equipment Well Number
<br /> WEST ARCO#4932 SPLIT SPOON
<br /> CM 3115102 HAZMAT STOCKTON,CA HOLLOW STEM AUGER EW-1 }
<br /> See"Legend to Logs"for Bonng Surface Groundwater Depth(ft) Total Drive Drop
<br /> sampluig method, Diam.(m) Elev(ft) -7 28 5 FIRST Depth(ft) wt Obs) Dist(in)
<br /> classifications and laboratory U ng methods8 1183 TOC T 28 STABILIZED 500 140 30
<br /> Well � 'b
<br /> Construction Aga Descnpttan
<br /> w
<br /> 17 393
<br /> 18 SILTY SAND(SM) olive brown(2 5Y4/2),fine-grained sand,
<br /> 20 medium dense,moist,strong chemical odor(0,65,35,0)
<br /> 12 394 EWl
<br /> 15 @27 5'
<br /> 16
<br /> 30 9 Same as above,wet,separate phase hydrocarbon sheen,strong 363
<br /> 11 chemical odor
<br /> 11
<br /> 9 578
<br /> 17 Same as above,decreasing silt content(0,80,20,0)
<br /> 19
<br /> 35 5 SAND(SP) dark olive gray(5Y3/2),with silt,fine-grained,medium 293
<br /> 7 dense,wet,moderate chemical odor(0,90,10,0)
<br /> 7 }
<br /> 9 SILTY SAND(SM):light olive brown(2 5Y5/3),tine-grained sand, 500
<br /> 11 medium dense,wet,strong chemical odor,caliche(0,75,25,0)
<br /> 17
<br /> 40 17
<br /> 19 SANDY SILT(ML):olive brown(2 5Y4/4),with clay,fine-grained 371 E Ol
<br /> 20 sand,low plasticity,hard,moist(0,25,70,5)
<br /> BENTONM 20 325
<br /> SEAL 5016" CLAYEY SILT(ML):brown(10YR4/3),moderate plasticity,hard,
<br /> moist,moderate chemical odor(0,0,70,30)
<br /> BENTONM
<br /> BACKFILL 45 18 260
<br /> 50/6"
<br /> 18 SILTY SAND(SM).dark olive brown(2 5Y3/3),fine-grained sand, 227 EWl
<br /> 23 very dense,wet,moderate chemical odor(0,70,30,0) @47 5
<br /> 25
<br /> 50/6" 306
<br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or
<br /> samples obtained during drilling Predominant material types shown on the log may contain different materials and the change from
<br /> one predominant material type to another could be different than indicated Descripttons on this log apply only at the specific location
<br /> at the tune of drilling and may not be representative of subsurface conditions at other locations or titres
<br /> Project No 77BP.43287 00.0040 Date 5/29/02 PR Log of Well 0)
<br /> 4932EW 1 GPJ
<br /> LOG OF BOREHOLE Approved by
<br /> Figure (sheet 2 of 2)
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