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SECOR <br />Interna4onal Incorporated <br />Logged By <br />EG <br />Date Drilled <br />2/14/02 <br />Dnlling Contractor <br />GREGG <br />DRILLING <br />Project Name <br />CHEVRON 9-8632 <br />TRACY, CA <br />Method/Equipment <br />SPLIT SPOON <br />HOLLOW STEM AUGER <br />Well Number <br />MW-6B <br />See "Legend to Logs" for <br />sampling method, <br />classificattons and laboratory testing methods <br />Boring <br />Diam (in) <br />8 <br />Surface <br />Elev (ft) <br />25 90 TOC , <br />Groundwater Depth (ft) <br />V 12 FIRST <br />Total <br />Depth (It) <br />50 0 <br />Drive <br />wt (lbs ) <br />140 <br />Drop <br />Dist (in) <br />30 Sample Recovery Blows/6" Well <br />Construction i <br />cN <br />Description P. <br />THREADED 6 . T <br />END CAP 11 19 <br />35 <br />— <br />_ <br />_ <br />55 <br />— <br />_ <br />— <br />_ <br />60 <br />— <br />— <br />_ <br />_ <br />65- <br />- <br />_ <br />_ <br />_ <br />70- <br />- <br />_ <br />_ <br />_ <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 matenals and the change from <br />one predominant material type to another could be different than indicated _DescRpti ns on this log apply only at the specific location <br />at the time of drilling and may not be representative of subsurface conditiO314'itt otliet tions or times <br />Project No 77CH 43578 00 0203 Date REVISED 6/13/02 pr <br />8632MW6B GPJ <br />LOG OF BOREHOLE <br />Log of Well <br />Figure <br />(sheet 3 of 3)