2023-04-19_PERMIT FILE - C1981010A ‎(29)‎

• Permit No: C1981010A
• IBM Index Class Name: Permit File
• Doc Date: 4/19/2023
• Doc Name: pages 4-172 to 4-222z
• Section_Exhibit Name: 4.8 Hydrologic Impacts
• Media Type: D
• Archive: Yes

Table 4.8-6 Sediment Pond Summary Information Cont. Page 3
Sedimentation
Peak
Stage Storage Outflow
Peak Effluent
Settleable Conc.
Peak
Stage Outflow Year
Pond Principal Emergency (ft) (ac‑ft) (cfs) (ml/l) (ft) (cfs) Built
Middle Flume #1 11.7 (3) 11.7 (3) 12.9 2.00 26.7 0.10 13.3 48.6 1999
(1)(2) Middle Flume #2 15.5 (3) 15.5 (3) 18.3 10.21 167.5 14.8 19.1 307.3 --
Middle Flume #3 14.0 (3) 14.0 (3) 16.8 8.36 146.3 0.05 18.0 303.5 1998
E. Mid. Flume #1 10.0 (3) 10.0 (3) 11.3 3.59 38.7 0.00 11.8 75.0 1999
Deal #1 16.8 (3) 16.8 (3) 18.1 1.37 7.8 0.00 18.7 19.8 2006
East Flume #1 11.3 (3) 11.3 (3) 12.5 3.55 7.3 0.00 13.0 19.5 2000
West Horse 13.0 (3) 13.0 (3) 13.2 0.87 0.96 0.00 13.3 1.6 2004
Deacon #1 14.5 (3) 14.5 (3) 16.1 14.18 37.64 0.00 16.91 80.04 2018
Deacon #2 12.0 (3) 12.0 (3) 13.1 15.82 18.13 0.00 13.73 41.21 2018
Deal #2 6.0 (3) 6.0 (3) 6.4 3.05 5.95 0.00 6.79 9.987 2018
Jeffway #1 9.0 (3) 9.0 (3) 9.9 4.56 12.27 0.00 10.33 27.75 2018
(1) Jeffway #2 7.0 (3) 7.0 (3) 7.2 2.56 2.87 0.00 7.38 4.81 2020
(1)East Buzzard #3 7.0 (3) 7.0 (3) 7.5 1.00 5.60 0.00 8.30 21.00 2023
(1)West Buzzard #3 10 11.5 10.9 0.94 10.90 0.00 11.50 29.30 2023
(1)West Buzzard #4 6.0 (3) 6.0 (3) 6.8 0.62 10.30 0.00 7.50 28.80 2023
(1) Year built for future ponds may vary by + two years.
(2) Designs will be sent to CDRMS for approval prior to construction.
(3) Single open-channel design.
Updated 7/22
Spillway Stage (ft)4-186a10-Yr, 24-Hr Storm Event 25-Yr, 24-Hr Storm Event