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<br />3A. Applicant to confirm that RCWD Ditch Authority to maintain outlets and <br /> <br />culverts within ACD 10-22-32 easement and submit information to the City. <br />Waiting for verification from RCWD. <br />RCWD has noted they will not maintain the culvert and outlet. <br />5.The applicant shall include the 10-day snowmelt event in modeling and update the <br />proposed 10-da y snowmelt HW Ls on the plans. 10-day snow melt added to the <br />models and report. <br />Applicant shall include the modeled 10-day snowmelt HWLs on the plans. <br />10-day snow melt results are shown on the plans and will be included in the updated <br />SWMP. <br />6.The applicant shall confirm the amount of new impervious. There are different <br />numbers in Section 1.2 and Section 2.5 of the Stormwater Management Plan, Secti on <br />2.2 of the Stormwater Pollution Pre vention Plan (SWPPP), and the HydroCAD <br />modeling. New impervious area has been recalculated and confirmed. <br />Addressed for Stormwater Management Plan and HydroCAD. Applicant shall <br />update the SWPPP. <br />SWPPP updated per SWMP updates. <br />SWMP revision 5 dated 5/13/19 still contains three different net new impervious <br />surface areas. Applicant has confirmed that the impervious surface reported in <br />the RCWD CAPROC (8.7 acres) is the correct amount. This aligns with <br />HydroCAD modeling, and water quality requirements for this amount are being <br />met. The City recommends the applicant update their SWMP to reflect this <br />number. <br />SWMP updated to relate to 8.7 acres of proposed new impervious. <br />7.See Table C3 in RCWD Rule C: St ormwater Management Plans for maximum <br />curve numbers for existing conditions and adjust modeling accordingl y. See <br />section 4b for adjustments to curve numbers for proposed conditions. Curve <br />numbers changed to match RCWD rules <br />8.The applicant shall confirm that the names of wetlands match between the existing <br />conditions map and the existing conditions HydroCAD model. Node IDs are <br />changed <br />9.The applicant shall provide the wetland susceptibility class, bounce, and <br />inundation periods for impacted wetlands. See Table C4 and section 8 in RCWD <br />Rule C. <br />None of the wetlands provide retention or significant bounce in existing or proposed <br />conditions because there is not a we ll-defined storage or outlet component. <br />The submitted HydroCAD model indicates that wetlands on the site have storage <br />and outlets. Please provide wetland susceptibility class, bounce, and inundation <br />periods for impacted wetlands. <br />Summary will be provided in the updated SWMP. The total bounce in the wetlands is <br />less than 1 foot for the 100-year rainfall event. The outlets and storage are modeled as <br />natural overflow weirs with typical undulating bottoms for storage. <br />Wetland summary not provided in SWMP revision submitted; applicant must <br />show with final SWMP revision wetland summary requirements noted above are <br />being met.