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19091860-7777 JOB F ol( w R r, <br /> RM SHEET NO. OF <br /> BRYAN A. STIRRAT & ASSOCIATES CALCULATED BY DATE <br /> 6rIL AND ENVIRONMENTAL ENGINEERS CHECKED BY DATE <br /> 0 VALLEY VISTA DRIVE • DIAMOND BAR,CA 91765 SCALE <br /> _4—------ <br /> ---------- <br /> _4- <br /> 8.16 <br /> Erbsi6n-and Sediment Control Handbook <br /> TABLE 8.1 Surface Area Requirements of Sediment Traps and Basins <br /> -------- --- <br /> J__ Surface area"requirements, <br /> Settling velocity, ft2 <br /> per ft/sec (m2 per m'/sec <br /> Particle size. mm ft/sec (misec) <br /> discharge discharge) <br /> 0.5 (coarse sand) 0.19 (0.058) 6.3 (20.7) <br /> 02 (medium sand) CI-067 (0.020) 17.9 (58.7) <br /> 0-1 (fine sand) 0.023 (0-0070) 52.2 (171.0) <br /> 0.05 (coarse silt) 0.0062 (0-0019) <br /> 193-6 <br /> (635.0) <br /> _A <br /> 0.02 (medium silt) 0-00096 (0-00029) 1;250.0 (4,101.0) <br /> 0.01 (fine silt) 0-00024 (0.000078) 5,000.0 (16,404.0) <br /> 0-005 (clay) 0-00006 (0-000018) 20,000.0667.0) <br /> (-65, <br /> ----—----- <br /> 4 ------ <br /> ------- J7! <br /> .......... <br /> A, <br /> --— ----— ---- <br /> 4- <br /> -4 <br /> I- --------- - ------- <br /> j- ego <br /> P1 F <br /> d. Aj <br /> -4– <br /> 21 <br /> T <br /> - ----------------- <br /> t -- <br /> ---------- <br /> ............. <br />