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Soil borings were taken and a soils report prepared for this Project. There were <br />no unusual soil conditions encountered. No specific soil correction work is <br />required on this Project. <br />2. Storm Sewer and Drainage <br />The storm sewer is under - designed in some locations. For much of the Project <br />area, runoff must travel significant distances over flat grades, and uneven curb <br />before reaching a catch basin. This is particularly true for the longer streets such <br />as Hokah Drive. Therefore, it is recommended that additional storm sewer and <br />catch basin structures be installed to reach areas currently not properly served, <br />and that the existing pipes and structures be cleaned and /or replaced as <br />needed. <br />Design of the storm sewer and drainage system must also meet the <br />requirements the City's National Pollution Discharge Elimination System <br />(NPDES) permit, and Rice Creek Watershed District requirements for <br />stormwater treatment. <br />Potential sites for stormwater treatment ponds include Shenandoah Park at the <br />downstream end of existing drainage system. Other locations include the area <br />adjacent to the existing drainage ditch at Arrowhead Drive and at the existing <br />storm sewer outfall east of the intersection of Totem Trail and Rice Court. <br />A Wetland Delineation Report has been completed for this Project. The only <br />wetlands in the Project area occur along the ditch section. There should be no <br />wetland impacts on this Project. <br />3. Sanitary Sewer <br />The sanitary sewer system in this neighborhood is in good condition. At this <br />time, it is expected that any Project work related to the sanitary sewer would <br />involve manhole rim adjustments, infiltration prevention sealing, and repair work <br />on the manholes. <br />5 13371.000 <br />