03-27-2023 City Council Packet - Laserfiche WebLink

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5 Outdoor Lighting City Code Section 1007.043(6) details requirements for Outdoor Lighting. Four (4) light poles with downlit hoods are proposed for the new parking lot. They are 27ft in height which is less than the 30ft maximum allowed. The photometric plan shows 0.1 foot candle compliance at the adjacent residential rear lot lines. This is less than the allowed 0.4 foot candle. Lighting performance standards are met. One (1) new light pole and three (3) existing light poles are proposed for the new tennis courts. They are 27ft in height which is less than the 30 ft maximum allowed. The photometric plan shows 0.4 foot candle compliance at the east lot line. This is equal to the allowed 0.4 foot candle. Lighting performance standards are met. Off-Street Parking Requirements The existing parking lot has 129 stalls. The new parking lot has 134 stalls. Existing trail will be reconstructed near the new parking lot. Off-street parking requirements are met. Grading Plan and Stormwater Management Per the City Engineer’s Memo dated March 1 March 22, 2023: Stormwater from the existing tennis court area drains to the east and west of edges of the existing tennis courts. Stormwater from the existing parking lot area drains to storm sewer located in the northeast and southeast corners of the parking lot. The stormwater from both areas ultimately drains through the 399 Elm Street site through private storm sewer to the public pond. The project is proposed to rehabilitate approximately 1.89 acres of impervious surface and add new or reconstruct approximately 0.57 acres on the impervious area, according to the Stormwater Management Report. The surface water from proposed improvements will still ultimately flow to the existing pond, but the applicant is proposing to treat stormwater at the proposed parking lot site through an infiltration basin. The proposed tennis courts include a draintile system that outlets to existing private storm sewer. A geotechnical evaluation report prepared by Braun Intertec was submitted with the application. The report included soil borings which indicated that the native soils in the area consist of very-fine to medium-grained sand and is locally silt-rich. Groundwater was not observed in the borings. The applicant used a HydroCAD model based on the Atlas 14, 24-hour storms to design the storm sewer and infiltration basin. The proposed improvements are designed to reduce site runoff rates for the 2-, 10-, and 100-year rainfall events. Runoff rates for the 10-day snow melt event were not provided at this time and are not required as basin outlets are below the 100- year HWL.