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Project Identifier WK13 <br />Project Title Ayers Pond Outfall Retrofi~ <br />Project Location <br />Two 72 inch outfalls that convey the North Beitline Floodway into the upstream end of Ayers Pond (sewer index <br />map page 62). <br />Subbasin <br />GIS U/S Node Location <br />GIS D/S Node Location <br />Drainage Area Served by Capital Project <br />Impervious (1994 Existing Land Use) <br />Impervious (Future) <br />Design Flow ( Future Conditions <br />WKNB <br />584411 <br />58442 <br />1450 Acres <br />41 <br />46 <br />NIA cfs <br />Project Description <br />Install a stormwater quality facility system (CDS) upstream of the outfali to Ayers Pond to remove large debris from <br />the inaccessible lower portions of the open channel. Retrofit the existing outfall structure with a larger concrete pad <br />and energy dissipators. <br />Proiect Elements <br />1 Ea - CDS 240 <br />1 EA - Ayers Pond Outfall Retrofit <br />Problems and/or Opportunities Addressed by the Capital Projects <br />Problems <br />There is a significant amount of debris which has deposited in the open channel upstream of the piped outfall. For <br />maintenance purposes this segment of the channel is inaccessible. The inverts of these outfalls are elevated <br />approximately 17.5 feet above the channel. The energy of water coming out of these outfalls during high flows is <br />expected to cause erosion problems. <br />Opportunities <br />This CP provides an opportunity to improve the water quality, reduce the required maintenance, and reduce the <br />erosion in this portion of the Beitline Floodwa . <br />(►'2a ICY, cx~ j~e c f ~eQ ~Cc c ~ Ce 2S <br />-T-xJ;•, <br />2- <br />P, t" '2 <br />©oa <br />, C)06 <br />~ o C)a <br />