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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 />~ <br />I <br /> <br />100 <br /> <br />U.S. SIEVE OPENING IN INCHES I <br />4 , 1 1/2 3 <br /> <br />HYDROMETER <br /> <br />U.S. SIEVE NUMBERS I <br />6 10 16 30 50 100 200 <br /> <br />10 <br /> <br />6 -1.5 314 318 4 8 14 20 40 70 140 <br />I Ih -L ~ I I II I <br /> ~ <br /> 1\ <br /> \ <br /> '-.... <br /> "- <br /> 1\ <br /> I~ <br />rm [\ <br /> '\ <br /> \ <br /> IIII <br /> IIII <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 />o <br /> <br />100 <br /> <br />10 <br /> <br />I <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 /> <br />coarse medium <br /> <br />Specimen Identification <br /> <br />Classification <br /> <br />WC% %Gravel %Sand %Silt %Clay <br />21.0 59.4 19.6 <br /> <br />. B-1 <br /> <br />20.0 ft <br /> <br />SM <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 />February 18, 1995 <br /> <br />FIGURE <br />No <br /> <br />B-2 <br /> <br />7147-G <br />