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pw <br /> r <br /> GROUNDWATER <br /> TECHNOLOGY, INC. Monitoring Well MW-4 <br /> Proiect CHVII3475 Eldorado Owner Chevron USA.Inc Drilling Log <br /> La^et,on 20001 CA Protect Number 0203002 <br /> r <br /> Description <br /> as % a 0 (Color,Texture,Structure) <br /> m o 0 N <br /> i {pj En t7) <br /> 26• a Light brown SA140 (continued) <br /> + sm <br /> 28 <br /> Light gray brown silty sandy CLAY (medium stiff,dry,no odor) <br /> with mottled white patches up to.5 cm long•and with <br /> 30 5' reddish brown sandier stringers. <br /> 30 e <br /> n <br /> 32 Cray silty CLAY (soft,damp,no odor) <br /> 34 CL <br /> 35 Variable gray/txawn silty CLAY (medium stiff,damp,no odor) <br /> 5 <br /> 35 e <br /> i. <br /> c 3B <br /> r .. Bluish-gray CLAY (medium stiff,dry,no odor) <br /> 40 40 3 <br /> q <br /> 15 <br /> 42 Blue CLAY with reddish sand stringers (soft,dry to damp, <br /> faint odor) <br /> 44ITH <br /> 2 <br /> 46 45 i <br /> 48 . <br /> 1 Encountered wale;at 490 feet on 7/20/91 (1030 hours) <br /> 50 n Gray brown s1ty SAND with occasional scattered whittish <br /> 50 s concretions (loose,damp,no odor) <br /> >o <br /> SHn b, <br /> 52 Gray clayey silty SAND <br /> Gray clayey SILT with ock ssionei pebbly sandy stringers <br /> 5� (varies from stiff to very stiff,wet,faint odor) <br /> 55 <br /> so ML <br /> 56 - - - -- — - -- --- "-- — - — --- <br /> a8 <br /> t <br /> osa�oarE Page 2 of <br /> i 1 <br /> 3 <br />