Protocol for the Derivation of Environmental and Human ... - CCME

Appendix E
Appendix E
Evaluation of Industrial Land Use Human Health Guidelines
Relative to Adjacent Land Use
1.0 General
Soil erosion and subsequent deposition can transfer contaminated soil from one property to another.
Where adjacent properties are uncontaminated or used for a more sensitive land use, this transfer of
contaminants may result in unacceptable degradation.
2.0 Erosion
Soil susceptibility to wind and water erosion is related to soil and climate characteristics and soil
management. Although similar factors help determine sensitivity to erosion, wind and water erosion
processes are sufficiently different to require separate modelling efforts.
2.1 Water erosion
Water erosion is typically modeled by the Universal Soil Loss Equation (USLE) (Wischmeier and
Smith, 1978), shown below:
A = R × K × L × S × C × P
where
A
R
K
L
S
C
P
is the rate of soil loss.
is the rainfall and runoff factor.
is the soil erodibility factor.
is the slope-length factor.
is the slope steepness factor.
is the cover and management factor.
is the support practice factor.
2.2 Wind erosion
Wind erosion is modeled by the Wind Erosion Equation (WEQ) (Woodruff and Siddoway, 1965). The
WEQ is described by the functional relationship:
E = ü(l,C, K, L,V)
where
E
I
is the rate of soil loss.
is the soil erodibility index.
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