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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />U.S. SIEVE OPENING IN INCHES <br />4 <br /> <br />I <br />3 <br /> <br />U.S. SIEVE NUMBERS <br />6 <br /> <br />HYDROMETER <br /> <br />100 <br /> <br />6 2 1.5 1314 1/23/8 4 6 810 141 2030405070100140200 <br />I I 1 I I 111111 I <br /> I~ <br /> \ <br /> \ <br /> \ <br /> 1111 <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 <br />GRAIN SIZE IN MILLIMETERS <br /> <br />0.1 <br /> <br />0.01 <br /> <br />0.001 <br /> <br />COBBLES <br /> <br />GRAVEL <br />coarse fine <br /> <br />fine <br /> <br />SILT OR CLAY <br /> <br />SAND <br />coarse medium <br /> <br />Specimen Identification <br />. B-4 27.0 ft <br /> <br />Classification <br /> <br />WC% % Gravel % Sand %Silt <br />49.5 45.0 <br /> <br />%Clay <br /> <br />5.5 <br /> <br />GW-GM <br /> <br /> <br />GRADATION CURVES, ASTM D-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 />Fehruary 18, 1995 <br /> <br />FIGURE <br />No <br /> <br />B-18 <br /> <br />7147-G <br />