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24647 Seaview Tce Enviro Mgmt Plan
Attached to the e-mail MCU14/0084 Environmental Management Plan (71 Seaview Tce).
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Log in to see the plans as drawnType D and F Sediment Basin Sizing
Basin volume = settling zone volume + sediment storage zone volume
Vsettling = 10 x Cv x A x R y%ile,x-day
where:
Vset = Settling Volume (m3)
Cv= The volumtric runoff coefficient (dimensionless)
A= Area (hectare)
Ry%ile,x-day= Design rainfall event. (mm) Job No. 17SUN-0024
Client HUTCHINSON
Vstorage = K1. K2. K3. K4. R. K. LS. P. C Job 71 SEAVIEW TERRACE
where: Date 3/8/2016
Vstor = Storage Volume (m^3)
K1= Inverse of settled bulk density (0.8m^3/tonne adopted)
K2= Area of exposed soil
K3= Duration of Exposure (or clean out frequency) - 3 months adopted
K4= Expected capture percentage of soil particles (1 adopted - all soil particles captured)
R= Rainfall erosivity factor
K= Soil erodibility factor
LS= topographic slope/length factor
P= Erosion Control Practice factor
C= Cover and management factor
Vstorage Calculations
INPUTS Input Output
Label R K LS P C K1 K2 K3 K4 Vstorage
Total Site (sand) 5659 0.015 7.99 1.3 1.0 0.8 0.23 0.25 1 40.6
Total Site (compacted) 5659 0.015 7.99 1.3 1.0 0.8 0.23 0.25 1 40.6
Total Basin Volume Calculations
INPUTS OUTPUTS Inputs Outputs
Depth
Settling Sediment
Volumetric Design Total (incl. Pond length Length (incl.
Catchment Zone Storage Freeboard Width (incl. freeboard)
Sediment Basin Label Runoff Rainfall Volume at freeboard width ratio Batter Slope freeboard)
Area (ha) Volume Volume (m) (m)
Coefficient Event Spillway ) (L/W) (m)
(m3) (m3)
(m)
Label Cv A R85%ile, 5-day Vsettling Vstorage Vtotal d L/W a f L w
Total Site (sand) 0.22 0.23 46 23.3 40.6 63.8 1.5 3.0 3.0 0.3 20.2 7.9
Total Site (compacted) 0.92 0.23 46 97.3 40.6 137.9 1.5 3.0 3.0 0.3 22.4 8.7
L
Cross-section A 1
a
0
W
Cross-section B
1
a
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