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7 <br /> <br />will need to be relocated to the west upon extension of Red Oak Lane due to its close proximity <br />to the intersection. <br /> <br />Staff Comments: <br /> <br />• The applicant shall draft and record a temporary cul de sac easement. <br />• The cul de sac shall be removed and the temporary easement released upon extension of <br />William Lane. <br />• “Future Road Extension” signs are required at the west end of William Lane and Red <br />Oak Lane and at the north end of Heritage Avenue. <br /> <br />Easements <br /> <br />Standard drainage and utility easements at least 10 feet wide are provided along all lot lines. <br />Drainage and utility easements are also dedicated over the outlots. <br /> <br />Storm Water Management and Erosion and Sediment Control <br /> <br />A Storm Water Management Plan has been prepared by a licensed, professional engineer and <br />reviewed for compliance by licensed, professional engineers from both WSB & Associates <br />(City) and Houston Engineering (RCWD). The revised plan increases the size of Pond 100 and <br />includes a plunge pool energy dissipator for additional stormwater management. <br /> <br />Per the revised March 20, 2020 Stormwater Management Plan prepared by Carlson McCain: <br /> <br />“The stormwater on the site flows to three different locations from the site. The majority of <br />the site drains to an existing private ditch/wetland area to the north of the site. A small portion <br />at the south of the site drains through an existing culvert along Birch St (CSAH 34). The <br />western portion of the site drains to the northwest to an existing private ditch. <br /> <br />The surface water will flow through three new ponds. Pond 200 located in the middle of the site <br />will pick up surface water from the south portion of the site and direct it towards Pond 100. <br />Pond 100 will pick up surface water from the majority of the site and discharge to the west to <br />an existing private ditch. Pond 400 will receive the remaining surface water and discharge to an <br />existing ditch to the north. <br /> <br />After the project is completed, the site will include approximately 8.8 acres of new impervious <br />surfaces including the streets, sidewalks, paths, parking lots, and rooftops. Due to poor soils in <br />the south portion of the site and a high groundwater table in the north portion of the site, <br />infiltration is not feasible. <br /> <br />The applicant used a HydroCAD model based on the Atlas 14, 24-hour storms to design the <br />storm sewer conveyance system and ponds. The site is designed to reduce site runoff rates for <br />the 2-, 10-, and 100-year rainfall events.” <br /> <br />Per the April 27, 2020 WSB City Engineer’s Review Memo: <br /> <br />“During the public hearing held at the Planning and Zoning Board meeting on February 12,