Text · page 100 of 359
Read the whole document on one page (all 359 pages, each with its own heading)
Table 10: Design Events Facility 24-hour Storm Event Storm Sewer 10-year 1-year Stormwater Management Practice(s) 10-year 100-year Flood Conditions 100-year 3.6.3 Performance Summary A comparison of the total required and provided CPv for the 1-year 24-hour storm event is shown in the following table: Table 11: CPv Summary Design Point Required CPv Provided CPv (DP) (af) (af) 1 0.20 0.36 A comparison of the pre- and post-development watershed conditions was performed for all Design Points and storm events evaluated herein. For all Design Points and design storms, this comparison demonstrates that the peak rate of runoff will not be increased. Therefore, the project will not have a significant adverse impact on the adjacent or downstream properties or receiving water courses. The results of the computer modeling used to analyze the pre- and post-development watersheds are presented in Appendix D and Appendix E, respectively. The following Table summarizes the results of this analysis. Table 12: Summary of Pre- and Post-Development Peak Discharge Rates Pre- vs. Post-Development Discharge Rate (cfs) Design Point 10-year 24-hour storm event 100-year 24-hour storm event (DP) Pre Post Pre Post 1 16.3 13.9 36.8 31.7 3.7 Climate Change Consideration This report presents the consideration for future physical risks due to climate change, in accordance with Part III.A.2 of the permit. Overall site planning, control measures and practices, conveyance systems and detention systems were evaluated against the seven (7) physical risks identified by NYSDEC due to climate change pursuant to the Community Risk and Resiliency Act (CRRA), 6 NYCRR 490, and associated guidance. Appendix C provides a description of each consideration, specific to the project. Stormwater Pollution Prevention Plan Page 13 2241067 Page 100 of 359