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r~ <br />U <br />GRAD,4TION CURVE <br />Sample 13+00 at 0.5 feet <br />100 <br />95 <br />90 <br />85 <br />80 <br />7s <br />.. 70 <br />s5 <br />~ so <br />55 <br />50 <br />ii 45 <br />m 40 <br />35 <br />a 30 <br />25 <br />20 <br />15 <br />10 <br />s <br />0 <br /> r ~ i <br /> <br />- ~----~----~-----r--- <br />~- ~----~---- <br />--- ' ---~-----•----- <br />T ----= <br />r----~-----~----T----*-----r----~---- <br />~----~----~----~-- <br /> <br />- ----- gravel - <br />- -- ----------- ------- <br />~ sand ~; -- ; ----- ---- ---- --- ----- ---- --- <br />~ silt ---- - -- -- <br />clay <br /> <br /> <br /> <br />_ <br />____r_____~ ___ <br />- <br />r_____r ____r____~____ <br />----r- <br />r____i_____r_____~ ____r_____r_____r ___ <br />_____r____~_____r__ <br /> <br /> , <br />- - <br />--- <br />r____r__ <br />~____ ~_____~_____i__ <br /> <br /> <br /> <br /> <br />3 ~~ ----------' ~ --~------------- ~---~ <br /># --- ----- ---- ---- -- - ---- -- - <br />200 ----- ---- ----- -- <br />75 19.0 4.6 ~ 0.85 0.25 0.075 0.0443 0.0206 ~ 0.0086 0.0044 0.0()22 <br />37.5 9.5 2.0 0.43 0.15 0.0609 0.0320 0.0121 0.0062 0.0031 0.0013 <br />Grain Size In Millimeters <br /> <br />