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<br />I' <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />, <br />I- <br />I <br />I <br />I <br />I <br />I <br />I <br />,I <br />I <br />r <br /> <br />U.S. SIEVE OPENING IN INCHES <br /> <br />U.S. SIEVE NUMBERS <br />16 30 <br /> <br />HYDROMETER <br /> <br />100 <br /> <br />6 4 2 1.5 13/4 1/23/8 3 4 6 810 14 20 40 50 70 loot40 200 <br />I I I I TI I <br /> 1111 <br /> IIII <br /> IIII <br /> 1\ ~ <br /> '\. <br /> \ <br /> \ <br /> , <br /> \ <br /> \ <br /> <br />90 <br /> <br />80 <br /> <br />P <br />E <br />R70 <br />C <br />E <br />N <br />T60 <br /> <br />F <br />I <br />N <br />E50 <br />R <br /> <br />B <br />Y 40 <br />w <br />E <br />I <br />G30 <br />H <br />T <br /> <br />20 <br /> <br />10 <br /> <br />o <br /> <br />100 <br /> <br />10 <br /> <br />1 0.1 <br />GRAIN SIZE IN MILLIMETERS <br /> <br />SAND <br /> <br />coarse medium fine <br /> <br />0.01 <br /> <br />0.001 <br /> <br />COBBLES <br /> <br />GRAVEL <br />coarse fine <br /> <br />SILT OR CLAY <br /> <br />Specimen Identification <br />. B-2 15.0 ft <br /> <br />Classification <br /> <br />WC% %Gravel %Sand <br /> <br />%Silt %Clay <br />11.6 <br /> <br />SP-SM <br /> <br />18.2 70.2 <br /> <br /> <br />GRADATION CURVES, ASTM 0-422 <br /> <br />CONTINENTAL DAM <br />HINSDALE COUNTY, COLORADO <br /> <br />NORTHWEST, INC. <br />Consulting Engineers & Scientists <br /> <br />PROjECT No. <br /> <br />DATE <br />February 18, 1995 <br /> <br />FIGURE <br />No <br /> <br />B-5 <br /> <br />7147-G <br />