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The exit gradients calculated from the flow nets are 0.01 and 0.02, at stations 111+00 <br /> and 145+00, respectively. These gradients are much less than 1.0, which satisfies <br /> the criteria given by the DMG. <br /> According to information provided by Leonard Rice Consulting Water Engineers, <br /> Inc., the 100-year flood elevation at stations 111+00 and 145+00 are 5369 and 5401, <br /> respectively. These elevations are at or below the water levels in the ditch at these <br /> locations. Consequently, hydraulic gradients will not increase as a result of the 100- <br /> year flood. <br /> In summary, calculated hydraulic gradients for the levee are low, the materials at this <br /> site are nondispersive, well graded, and filter-like. We opine piping is not a <br /> foreseeable concern at the levee. For any additional information or when we can be <br /> of further assistance, please call the undersigned. <br /> Very tr ly yours, <br /> CTL(T OMP N, C. '`. t c;,•. <br /> F Ink . olli <br /> Princ' alEngi <br /> :blc ...... <br /> (6 copies sent) <br /> FLATIRON SAND AND GRAVEL COMPANY <br /> LEVEE AT DEEPE FARM PIT <br /> CTLIT JOB NO 25.385 2 <br />