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9BGROUNDWATER <br /> TECHNOLOGY, INC Monitoring Well MW-4 <br /> Project CW11347 S Eldorado owner Chevron USA Inc <br /> Location Stoctor; CA Project Number 020300162 Drilling Log <br /> a <br /> o c <br /> zi Qa U a o Description <br /> E E (Color, Texture, Structure) <br /> L) in n in <br /> m <br /> 26 b Light brown SAND (contnued) <br /> 28 SM <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 /> s reddish brown sandier stringers <br /> 30 s <br /> a <br /> 32 <br /> Gray silty CLAY (soft damp, no odor) <br /> 34 CL <br /> 35 9 Variable gray/brown silty CLAY (medium stiff damp,no odor) <br /> 36 - <br /> 3B <br /> 6 38 <br /> Bluish—gray CLAY (medium stiff dry no odor) <br /> 40 40 5 <br /> IO <br /> is <br /> 42 Blue CLAY with reddish sand stringers (soft dry to damp, <br /> faint odor) <br /> 44 <br /> Cly <br /> z <br /> 46 4s 3 <br /> 48 <br /> Encountered water at 49 0 feet on 7/20/91 0030 hoLrs) <br /> 50 a Gray brown silty SAND with occasional scattered whittish <br /> 50 B concretions (loose damp,no odor) <br /> 10H- sm <br /> 52 Gray clayey silty SAND <br /> Gray clayey SILT with occasional pebbly sandy stringers <br /> 54 (varies from stiff to very stiff wet faint odor) <br />• 55 +o <br /> so ML <br /> 55 <br /> (,9ioars9sti f'c�i�t' <br />