For inspection purposes only. Consent of copyright owner required ...

Qbar (2.3 Year)
3,786 m³
Rainfall Data as Recorded by Met Eireann in FSU - OPW
Allowable Discharge =
Total
PRELIMINARY - SURFACE WATER STORAGE CALCULATIONS FOR
Proposed Landfill Development Capped Cells - Naul - Qbar Throttle
Storm Return Period =
Maximum Storage Required =
2.64 l/s/ha 61 l/s
Proposed Impermeable Areas Gross Unit Impermeability Nett
Capping Area 25.500 ha @ 90% 22.950
Duration Rainfall Intensity Rainfall
Proposed
Imperm.
Area
Proposed
Run-off
Storage
Required
(min) (mm) (mm/hr) (m³/ha) (ha) (m³) (m³) (m³)
15 6.5 26.00 65 22.95 1492 54.5 1437.2
30 8.5 17.00 85 22.95 1951 109.1 1841.7
60 11 11.00 110 22.95 2525 218.1 2306.4
120 14.2 7.10 142 22.95 3259 436.2 2822.7
180 16.6 5.53 166 22.95 3810 654.4 3155.3
240 18.5 4.63 185 22.95 4246 872.5 3373.3
360 21.5 3.58 215 22.95 4934 1308.7 3625.5
540 25 2.78 250 22.95 5738 1963.1 3774.4
720 27.9 2.33 279 22.95 6403 2617.4 3785.6
1080 32.5 1.81 325 22.95 7459 3926.1 3532.6
1440 36.3 1.51 363 22.95 8331 5234.8 3096.0
2880 43.8 0.91 438 22.95 10052 10469.6 -417.5
4320 49.8 0.69 498 22.95 11429 15704.4 -4275.3
5760 55.2 0.58 552 22.95 12668 20939.2 -8270.8
8640 64.5 0.45 645 22.95 14803 31408.8 -16606.1
11520 72.8 0.38 728 22.95 16708 41878.4 -25170.8
14400 80.3 0.33 803 22.95 18429 52348.0 -33919.2
17280 87.4 0.30 874 22.95 20058 62817.6 -42759.3
23040 100.4 0.26 1004 22.95 23042 83756.9 -60715.1
28800 112.5 0.23 1125 22.95 25819 104696.1 -78877.3
36000 126.6 0.21 1266 22.95 29055 130870.1 -101815.4
For inspection purposes only.
Consent of copyright owner required for any other use.
Storage Required =
Outflow
3,786 m³
22.950
EPA Export 24-08-2012:23:55:52