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Ms. Katie Larsen <br />04/02/2025 <br />Page 5 <br />15. Confirm drainage area delineations match site grading, some areas on the perimeter <br />of the sites do not appear possible to route to proposed stormwater basins as <br />indicated in HydroCAD. <br />(DTE 3/11/2025) The drainage areas have been updated per the comment. <br />(WSB 4/2/2025) The existing modeled drainage area of 4.551 acres exceeds the <br />proposed modeled drainage area of 4.071 acres. These areas must match for proper <br />confirmation of rate control. <br />17. (WSB 4/2/2025) It is recommended to consolidate the parking space curb cuts going <br />into IB-1. <br />18. (WSB 4/2/2025) The I13-1 storage curve in the HydroCAD modeling is incorrect for <br />the 906 contour. <br />19. (WSB 4/2/2025) Some kind of trash screening is needed on the IB-1 outlet opening <br />to reduce the potential for clogging of the 5" orifice. <br />20. (WSB 4/2/2025) The EOF for I13-2 must include riprap stabilization. <br />21. (WSB 4/2/2025) Provide the vertical separation of the storm sewer crossing the <br />watermain in Marketplace Dr. <br />a. Maintain minimum 18" separation with watermain <br />b. Insulation is needed for when vertical separation is less than 36" with <br />watermain <br />Java Properties - Lino Retail 2.0 Engineering Review <br />