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SECOR <br />International Incorporated <br />Logged By <br />EG <br />Date Dnlled <br />2J13/02 <br />Drilling 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-6A <br />Groundwater Depth (ft) <br />11 FIRST <br />See "Legend to Logs ' for <br />sampling method, <br />Classifications and laboratory <br />es t_LnIg_n_t_o_5d <br />Bonng <br />Diam (in) <br />8 <br />Surface <br />Elev (ft ) <br />25 86 TOC <br />Total <br />Depth (ft) <br />200 <br />Dnve <br />Ns/gibs ) <br />140 <br />Drop <br />Dist (in ) <br />30 <br />Well <br />Construction Description <br />TRAFFIC <br />RA 1E1) <br />WELL BOX <br />GROUT <br />BENTONTTI <br />SEAL <br />SAND <br />0 020" <br />SLOTTED <br />SCREEN <br />Asphalt <br />See log for MW-6B for soil stratigraphy <br />5- <br />15- <br />THREADED 20 <br />END CAP <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 ma contain different matenals and the change from <br />one predominant material type to another could be different than indicated this log apply only at the specific location <br />at the time of drilling and may not be representative of subsurface conditi or times <br />Project No 77CH 43578 00 0203 Date REVISED 6/13/02 pr <br />8632MW6A GPJ <br />LOG OF BOREHOLE <br />Log of Well <br />Figure <br />(sheet 1 of 1)