Erosion and Sediment control checklist and calcs · OPW19/0098

1. Site Data Sheet
                                 Site Name: Gateway Drive

                          Site Location: Noosaville

                                  Precinct: 64 Gateway Drive

                  Description of Site: Preliminary Earthworks


                                                                  Sub-catchments
                  Site area                                                                                    Remarks
                                                 Basin 1
Total catchment area (ha)                        0.873
Disturbed catchment area (ha)                    0.873


Soil analysis (enter sediment type if known, or laboratory particle size data)
Sediment Type (C, F or D) if known:                F
           % sand (fraction 0.02 to 2.00 mm)
            % silt (fraction 0.002 to 0.02 mm)
       % clay (fraction finer than 0.002 mm)
                        Dispersion percentage
                 % of whole soil dispersible
Soil Texture Group                                 F

Rainfall data
Design rainfall depth (days)
Design rainfall depth (percentile)
x-day, y-percentile rainfall event
Rainfall R-factor (if known)
IFD: 2-year, 6-hour storm (if known)              16.6

RUSLE Factors
Rainfall erosivity (R -factor)                    6390     6390     6390   6390    6390   6390   Auto-filled from above
Soil erodibility (K -factor)                      0.058
Slope length (m)                                   80
Slope gradient (%)                                 1.2
Length/gradient (LS -factor)                      0.23
Erosion control practice (P -factor)               1.3
Ground cover (C -factor)                           1

Calculations
Soil loss (t/ha/yr)                               112
Soil Loss Class                                    1
             3
Soil loss (m /ha/yr)                               86