Proceedings - Teaching and Learning Centre - Simon Fraser ...

Fraser River Action Plan 3rd Research Workshop
Traffic Density and Land Cover Permeability in Sub-Basins
Station Grandview Gilmore Eagle
Sub-Basin Size
(hectares)
685.9 1,073.2 818.1
Traffic Density
(vehicle km/day)
670 978 177
Impermeable Area
(% of total)
54.0 55.4 24.6
Mean Stormwater Hydrocarbon
Concentration (mg/L)
3.15 2.32 0.96
Normalized Hydrocarbon
Concentration (µg/L/hectare)
4.59 2.16 1.17
Stormwater Hydrocarbon Concentration and Traffic Volume
Station Nootka Renfrew Willingdon
Typical Traffic Volume
(vehicles/hour)
38 1,140 2,560
Mean Runoff Hydrocarbon
Concentration (mg/L)
1.14 3.68 4.04
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