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PUBLIC WORKS - MAINTENANCE DIVISION <br /> STORMWATER REHABILITATION - CIP A, <br /> PROJECT REQUEST LIST <br /> November 1997 upda{ -el "3 y 9$ <br /> Following is a list of rehabilitation projects in order of relative priority and current status: <br /> 1. Location: Northeast corner of intersection at 19th Ave. and Emerald St. <br /> Nature of Problem: Poor street drainage and constricted flow in storm sewer. <br /> Catch basins in street clogging. Owners of the apartment building filed a claim <br /> against the City several years ago, claiming that a public catch basin grate at the <br /> driveway apron of the flooded parking area was clogged with leaves. City response <br /> was that the drainage system in the parking garage malfunctioned (the basement <br /> sump pump was not operating at the time of the flooding) and damage was not due <br /> to the City system. However, some deficiencies were found in the public system as <br /> a result of investigation of the claim. Unlike what is shown on the grid map, water <br /> drains to catch basin #57211 on 19th Ave. in front of the parking garage. It then <br /> runs into mh #57444 (under the sidewalk), then west through an 8" pipe to mh <br /> #57443 (which is a 24" dia. non - standard mh, also under the sidewalk), then <br /> through a 10" pipe at an oblique, southwesterly angle to mh #57464 in the 18" <br /> main on Emerald, where it is entering the flowline at an angle against the flow of <br /> the 18" main. From this point it flows north to mh #57463, which is a non- <br /> standard 24" dia. manhole with an 8" sanitary carry through. <br /> Recommended Solution: Correct restrictions to the system in this intersection by <br /> reconfiguration and /or upsizing necessary to ensure adequate system capacity. <br /> Status: New Project 3/97; Project development underway - to be included with <br /> nearby Emerald to Onyx alley project. <br /> Status `98: Plans 90% complete. <br /> 2. Location: Marshall Ditch west of Terry Street N. <br /> Nature of Problem: Four culverts ( #59950, 59951, 67062, and 70169) carry Marshall <br /> Ditch water under Terry Street and outfall to the Marshall Ditch on the west side <br /> of Terry. Two outfalls ( #70538 and 70559) to the west of the four culverts were <br /> installed to drain into the Marshall Ditch from Blair Commons Subdivision. The <br /> channel narrows significantly just west of the four culverts and is choked with trees <br /> and other vegetation, sediment and debris. This condition caused street and <br /> parking lot flooding at Daneland Mobile Home park on the east side of Terry. <br /> 1 <br /> 77rehab. sts 1/97 hnr <br />