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Pipe Discharge Design <br /> The 9 ' pipe will hang over the existing trough for a distance of 1 <br /> foot . <br /> A concrete splash plate has been located at the bottom of the <br /> vertical flume section as part of the original design. This <br /> concrete pact is usable but additional boulders and concrete w i 11 be <br /> placed for a distance of 25 feet from the bottom of the discharge <br /> downstream. No significant scouring has occurred in the past at <br /> this location and the added material will further protect against <br /> future scouring. <br /> Other Construction Details <br /> All old tires , steel and debris will be removed from behind the <br /> existing flume. Compacted dirt will only be placed around the <br /> entrance to the pipe to provide additional safety factor for a <br /> large storm and to continue to provide access to the old refuse <br /> area on the other side of the pipe. <br /> In order to remove all water from the channel during construction, <br /> the flows in the trough upstream will be placed in a 16" diameter <br /> plastic pipe located in the trough , until the construction is <br /> complete. Once work is started, work will proceed as rapidly as <br /> possible until completion . <br /> `�171�3 <br />