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Input Structures The barrow ditch along the haul road, a <br />lateral above the haul road ditch and a separate, west <br />flowing ditch contribute water and sediment to the trap. <br />Where the barrow and lateral ditches join and enter the trap <br />from the south, a small alluvial fan has been deposited, a <br />deposit that poses no problem to the trap volume. Similarly, <br />the west flowing ditch has deposited alluvial debris at the <br />east side of the trap which is of no volumetric consequence <br />at this time. <br />Miscellaneous The addition of compacted material to the <br />embankment top has increased the vertical distance from the <br />bottom of the dewatering pipe to the embankment top by <br />approximately 0.5 foot. Thus the 2.8 foot vertical dimension <br />shown on cross section B on the "As Functioning Northwest <br />Sediment Trap" drawing dated 22June94 is increased to 3.3 <br />feet. With this recent construction, the trap volume now <br />exceeds the design volume. <br />Respectfully submitted, <br />ene M. Shearer,P.E. <br />^'1~.: <br />,: j~':L~v :,~ <br />_:, <br />~A, ~` J,+ <br />