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121030.01 3/19/18 N:IPR0JECTS\121030.010.012.GPJ GRAIN SIZE FIGURE <br />100 <br />90 <br />80 <br />70 <br />t <br />rn <br />60 <br />d <br />50 <br />ii <br />c <br />2 40 <br />`m <br />n. <br />30 <br />20 <br />10 <br />0 <br />U.S. Sieve Opening in Inches U.S. Sieve Numbers I Hydrometer <br />6 4 3 2 1.5 3 4 1/2 8 3 4 6 8 10 14 16 20 30 40 5060 100 140 200 <br />I <br />i <br />i <br />I <br />i <br />Al I <br />i <br />100 10 1 0.1 0.01 0.001 <br />Grain Size in Millimeters <br />Cobbles <br />Gravel <br />ISand <br />Silt or Clay <br />Coarse I Fine <br />I Coarse Medium I �Fine:d <br />Symbol <br />Exploration <br />Number <br />Sample <br />Number <br />Depth <br />(ft) <br />Natural o <br />Moisture (/o) <br />Soil Description <br />Unified Soil <br />Classification <br />• <br />B-2 <br />S-6 <br />20.0 <br />28 <br />Gray, silty, fine to medium SAND with gravel <br />SM <br />m <br />B-2 <br />S-7 <br />25.0 <br />17 <br />Gray, gravelly, fine to medium SAND with trace silt <br />SP <br />A <br />TP-2 <br />S-1 <br />3.0 <br />23 <br />Brown, silty, fine to medium SAND with trace gravel <br />SM <br />�r <br />TP-3 <br />S-1 <br />2.0 <br />36 <br />Brown, very sandy SILT with trace gravel <br />ML <br />O <br />TP-4B <br />S-1 <br />5.0 <br />24 <br />Gray, fine to medium SAND with trace silt and gravel <br />SP <br />LANDAU <br />ASSOCIATES <br />Riverside Business Park <br />Public Access Project <br />Everett, Washington <br />Grain Size Distribution <br />Figure <br />B-3 <br />