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MONITORING WELL LOG 1 <br />SAMPL INC mple Type is Per Fool , Rudd: BORING . MW-2 <br />DRILLING METHOD . Hollow Stem Auger <br />DATE COMPLETED 8/21/91 <br />Li' L.L.i ._, <br />= <br />CD <br />..cr <br />Cr) SYMBOLS DESCRIPTION DEPTH IN FEET 3 144` SCREENED INTERVAL PVC 24 M-1-- SM BROWN SANDY SILT/SILTY SAND, very fine grained, dense, <br />dry, 5-10% low plasticity clay tines. <br />\ <br />\ <br />\ <br />\ <br />Hardpan layer. - , - --BENTONI SAND G \ <br />\ MI_ <br />Sm As above. ?•:•i <br />-:•:•:. ;•:-:. <br />- <br />... <br />SM BROWN SILTY SAND, fine grained, loose, moist, micaceous, <br />some orange mottling, 10-15% silty fines, trace or low plasticity <br />clay fines. <br />_ _ — _ _ _ _ <br />— _ _ — <br />4 <br />CH DARK GRAY CLAY, soft, moist, medium to high plasticity, peaty <br />odor, trace organic material. — <br /> <br />_ = <br />_ <br />— _ _ _ _ <br />ii <br />12 - <br />-,-- <br />-,-, <br />:-; <br />..i; <br />-;,' ..;., <br />-;/ <br />. <br />-; • <br />OLIVE GRAY TO DARK GRAY SILTY CLAYEY SAND, very tine <br />grained, saturated, trace of mica, trace of peaty organic <br />material. <br />No organic material. <br />_ <br />— — _ <br />— _ <br />— — _ _ _ <br />— _ _ <br />— _ — _ <br />— _ <br />— ___ <br />25- U 20 - <br />Increase in clay fines. -25 <br />, <br />30- <br />35 <br />NOTES: <br />I) BORING SAMPLED TO 25.5 FEET BELOW <br />GROUND SURFACE AND 12-INCH BORING <br />COMPLETED TO 24.0 FEET BELOW GROUND <br />SURFACE OF 8/21/91. <br />MONITORING WELL COMPLETED ON 8 /20/91. <br />4-INCH SCHEDULE 40 PVC BLANK CASING <br />INSTALLED TO 7.5 FEET BELOW GROUND <br />SURFACE. 4-INCH SCHEDULE 40 PVC 0.010 <br />SLOTTED SCREEN INSTALLED 7.5 TO <br />-30 <br />35 22.5 FEET BELOW GROUND SURFACE. <br />Ott DAMES & MOORE <br />METROPOLITAN STEVEDORE <br />Stockton, California <br />APRIL 1992 <br />12650-011-044 <br />Page I of I