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SECOR <br /> InternatvnalIncorporated <br /> =LoggedlBlyDate Dnlled Drilling Contractor Project Name Method/Egtupment Well Number <br /> WEST ARCO#4932 SPLIT SPOON <br /> 6110102 - HAZMAT STOCKTON,CA HOLLOW STEM AUGER MW-11 <br /> See"Legend to Cogs"for Boring Surface Groundwater Depth(ft) Total Drive Drop <br /> sampLng method, Diam(in) Elev(ft) Depth(ft) wt(lbs) Dist(in) <br /> classifications and laboratory $ NA <br /> testingmethods T 28 STABILIZED 405 140 30 <br /> Well o Description <br /> Construction <br /> TRAFKC 4-inch sidewalk slab <br /> RELATED Sand fill <br /> ' WE LL BOX SILTY CLAY(CL). very dark grayish brown(10YR3/2),moderate <br /> plasticity,stiff,moist(0,0,30,70) <br /> SANDY SILT(ML) brown(10YR5/3),with clay,fine-grained sand,low <br /> ° GROUTplasticity,very stiff,moist,weak subangular blocky soil structure(0,40,55,5) <br /> 5 7 0 <br /> 8 <br /> a o 11 <br /> � K <br /> A b <br /> d 9 <br /> 10 7 Same as above 0 <br /> 12 <br /> a e <br /> a e <br /> �t A <br /> 15 10 Same as abovepartially cemented in zones 0 <br /> 18 SILTY SAND(SM) dark yellowish brown(10YR4/4),fine-grained sand, <br /> BENTONM 24 dense,moist(0,60,40,0) <br /> SEAT, <br /> SAND <br /> 9 <br /> 2" 20 14 SANDY SILT(ML) dark yellowish brown(10YR4/4),with clay, 0 <br /> SLOTTED 23 fine-grained sand,low plasticity,hard,moist,(0,35,60,5) <br /> SCREEN <br /> The substrata descriptions above are generalized representations and based upon visuallmanual classification of cuttings and/or <br /> samples obtained during drilling Predominant matenal types shown on the log may contain different materials and the change from <br /> one predominant matenal type to another could be different than indicated Descriptions on this log apply only at the specific location <br /> at the time of dnlling and may not be representative of subsurface conditions at other locations or times <br /> Project No 77BP 54932.00 0230 Date 8/14/02 PR Log of Well <br /> 4932MW11 GP7 Approved by <br /> LOG OF BOREHOLE <br /> Figs (sheet I of 2) <br />