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E12V C-,C <br /> WEISS ASSOCIATES IM <br />' WELL MW-7 (B-7) <br /> (V GRAPHIC LOG DESCRIPTION <br />' 0 —.. Asphalt, concrete and base rock <br /> Portland _.i. __.. Silty CLAY(CL),moderate yellowish brown, <br /> Cement& _ very stiff,damp,20-300%fine sand,low est K <br /> W 5%Bentonite <br /> FA <br /> 5 5- <br /> 94 <br /> U 4! P1/C �.. <br /> Casing W <br /> w - --- <br />' <br /> 5 <br /> V] Contadjdnller� <br /> 10 10 Silty SAND/Sandy SILT(SM/ML),moderate <br /> i <br />' _ --_----- brown, mottled dusky green, mecum dense, <br /> damp,<50/.clay,tine sand,mod est K <br /> x <br /> c� <br /> 15 15 _ <br /> -- 60-70%(ML)at 15 ft <br /> a <br /> w - <br /> aa _ <br /> 20 20 - <br /> Bentonrte Increasing fine sand to 60-701%at 20 ft <br /> pellet seal <br /> #3 - - <br /> p'+ Monterey - <br /> P4 _ _ ._ <br /> A — sand Dark yellowish brown,damp at 24 5 ft <br /> _ <br /> 2!L- <br /> 2.5 <br /> — _-- <br /> Silty CLAY/Clayey SILT(CUML),dark <br /> i L yellowish brown,firm to stiff,damp,20-30'/0 <br />' a z 4 a fine sand,low est K <br /> in.wc►r <br /> EXPLANATION <br /> �► Water level during drilling (date) Logged by Sharon L. Halper <br /> Q Water Level (date) Supervisor Richard Weiss, EG 1112 <br /> Contact (dotted where appiox) Drilling Company Westek, San lose, CA <br /> Uncertain Contact Driller Tom Langan <br /> Location of recovered dnve sample Drilling Method Hollow stem auger <br /> Location of drive sample sealers for chemical Dates Drilled 1-22-88 <br /> • analysis Well Head Completion Locking stovepipe & G-12 Christy box <br /> $$ Grab sample Type of sampler Split barrel (1.5, 2, 2.5 m ID) <br /> est K = Estimated Permeability (hydraulic conductivity) <br /> Boring Log and Well Construction Details - Well MW-7 Chevron SS #96465 <br /> Stockton, CA <br />