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1 SECOR
<br /> IntenwhonaIlnco rated
<br /> ' Logged By Date Drilled Dnlhng Contractor Project Name Method/Equipment Well Number
<br /> WEST ARCO#4932 SPLIT SPOON
<br /> CM 3/15102 HAZMAT STOCKTON, CA HOLLOW STEM AUGER EW-1
<br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft) Total Drive Drop
<br /> ' samphng method, Diam(m) Elev(ft) 28 5 FIRST Depth(ft} wt(lbs) Dist(in)
<br /> classifications and laboratory
<br /> testine methods 8 1183 TOC X 28 STABILIZED 500 140 30
<br /> Well � � 3 Description �
<br /> Construction
<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 EW 1
<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),fine-grained sand, 500
<br /> 11 medium dense,wet,strong chemical odor,caliche(0,75,25,0)
<br /> ' 17
<br /> 40 17 371 EW 1
<br /> 19 SANDY SILT(ML) olive brown(2 5Y4/4),with clay,fine-grained @40'
<br /> 20 sand,low plasticity,hard,moist(0,25,70,5)
<br /> BENTONM 20 325
<br /> SEAL 50/6" CLAYEY SILT(ML) brown(10YR4/3),moderate plasticity,hard,
<br /> ' moist,moderate chemical odor(0,0,70,30)
<br /> BENTONM
<br /> 18 26Q
<br /> BACKFILL 45
<br /> Sa/6"
<br /> 18 SILTY SAND(SM) dark olive brown(2 5Y3/3),fine-grained sand, 227 EW1
<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 Descriptions on this log apply only at the specific location
<br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times
<br /> Project No 77BP.43287 00 0040 Date 5/29/02 PR Log of Well
<br /> 4932EW 1 GPJ Approved by
<br /> LOG OF BOREHOLE
<br /> Figure (sheet 2 of 2)
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