Attachment 6 - Stormwater Management Plan and Engineering Response. · MCU23/0078

BORNHORST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+\VARD
Table 7: XP Storm Existing Peak Flow Results — Lot 3 (m?/sec)
Storm Duration ARI & AEP
. 1 Years | 2 Years | 5 Years | 10 Years 20 Years | 50 Years | 100 Years
(min) 63% 39% 18% 10% 5% 2% 1%
20 0.005 0.014 0.049 0.077 0.113 0.139 0.187
25 0.012 0.021 0.058 0.090 0.123 0.172 0.218
30 0.014 0.032 0.075 0.111 0.150 0.209 0.263
45 0.031 0.049 0.119 0.168 0.227 0.311 0.392
60 0.048 0.067 0.153 0.215 0.295 0.391 0.480
90 0.072 0.099 0.209 0.293 0.375 0.497 0.591
120 0.090 0.125 0.238 0.326 0.413 0.535 0.634
180 0.104 0.139 0.255 0.341 0.433 0.548 0.648
Critical 0.104 0.139 0.255 0.341 0.433 0.548 0.648
Critical Even (Min) 180 180 180 180 180 180 180
Table 8: XP Storm Existing Peak Flow Results - Lot 7 (North) (m3/sec)
Storm Duration ARI & AEP
. 1 Years | 2 Years | 5 Years | 10 Years 20 Years | 50 Years | 100 Years
(min) 63% | 39% | 18% 10% 5% 2% 1%
20 0.001 0.003 0.010 0.017 0.024 0.030 0.040
25 0.002 0.004 0.012 0.019 0.026 0.037 0.047
30 0.003 0.007 0.016 0.024 0.032 0.044 0.056
45 0.007 0.010 0.025 0.035 0.046 0.061 0.074
60 0.010 0.014 0.029 0.040 0.053 0.068 0.082
90 0.013 0.018 0.033 0.046 0.058 0.073 0.086
120 0.014 0.019 0.035 0.047 0.059 0.071 0.084
180 0.014 0.019 0.034 0.046 0.058 0.070 0.082
Critical 0.014 0.019 0.035 0.047 0.059 0.073 0.086
Critical Even (Min) 120 120 120 120 120 90 90
Table 9: XP Storm Existing Peak Flow Results - Lot 7 (South) (m3/sec)
Storm Duration ARI & AEP
(min) 1Years | 2 Years | 5Years | 10 Years | 20 Years | 50 Years | 100 Years
63% 39% 18% 10% 5% 2% 1%
20 0.001 0.003 0.011 0.018 0.026 0.032 0.043
25 0.003 0.005 0.013 0.021 0.029 0.040 0.051
30 0.003 0.007 0.017 0.026 0.035 0.048 0.061
45 0.007 0.011 0.027 0.039 0.051 0.070 0.086
60 0.011 0.015 0.034 0.046 0.061 0.079 0.095
90 0.015 0.021 0.040 0.054 0.068 0.086 0.102
120 0.017 0.023 0.042 0.056 0.071 0.087 0.102
180 0.017 0.023 0.042 0.056 0.071 0.085 0.100
Critical 0.017 0.023 0.042 0.056 0.071 0.087 0.102
Critical Even (Min) 120 120 120 120 120 120 90

 

 

 

 

 

 

 

 

 

 

Discharge hydrographs for the existing model have been included in Appendix F.

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