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Ms. Katie Larsen <br />08/06/2025 <br />Page 5 <br />8. Both infiltration basins must be able to demonstrate they meet 48-hour drawdown <br />requirements. <br />(DTE 3/11/2025) Outlets have been added to both basins to provide maximum depth <br />below outlet of 1.8’ which correlates to a 48-hour drawdown time <br />(WSB 4/2/2025) Complete <br />(WSB 8/6/2025) This comment is reopened as IB-1 is now calculated with a 0.8 in/hr <br />infiltration rate. What is the basis for this increase? <br /> <br />9. The lowest-floor elevation of all buildings must be specified to ensure compliance <br />with infiltration basin freeboard requirements (basin bottom must be at or below <br />lowest-floor elevation). <br />a.This is especially relevant for the potential oil change pit in the Valvoline <br />building. <br />(DTE 3/11/2025) The FFE of each building has been added to the plans. The <br />basement elevation of the Valvoline building has also been added to the <br />plans. <br />(WSB 4/2/2025) Complete <br /> <br />10. Show roof drain routing. Tie into storm sewer at or upstream of a sumped structure to <br />provide pretreatment of roof runoff. <br />(DTE 3/11/2025) The locations of the roof drains will be finalized once tenants have <br />been finalized. <br />(WSB 4/2/2025) Noted, though the locations must still comply with the original <br />comment. <br />(DTE 6/19/2025) The locations of the roofdrains for building’s B1 and B2 have been <br />provided. Building’s A and B will provide the roof drain locations during the building <br />permit phase. <br />(WSB 8/6/2025) Complete. <br />11. The Marketplace Drive roadway and existing stormwater basin, including offsite <br />tributary drainage, must be included in the HydroCAD model to understand all flows <br />throughout the site. <br />(DTE 3/11/2025) The Marketplace Drive roadway and existing stormwater basin have <br />not been included in the HydroCAD model as there is no interaction between the City <br />and Development’s stormwater infrastructure. <br />(WSB 4/2/2025) Complete <br /> <br />12.HydroCAD runoff should be set to “Calculate separate pervious/impervious runoff <br />(SBUH weighting)” for most accurate runoff results. <br />(DTE 3/11/2025) The HydroCAD model has been updated per the comment. <br />(WSB 4/2/2025) Complete <br /> <br />13. Proposed impervious should be entered as paved parking and roof as there is a mix <br />of both. <br />(DTE 3/11/2025) The HydroCAD model has been updated per the comment. <br />(WSB 4/2/2025) Complete <br />14. Existing and proposed models should route to a Link node to calculate total offsite <br />flows. <br />(DTE 3/11/2025) The HydroCAD model has been updated to include one discharge <br />node for both existing and proposed conditions <br />(WSB 4/2/2025) Complete <br /> <br />Java Properties - Lino Retail 2.0 Engineering Review <br /> <br />