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RFI - Attachment F - Engineering Report
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Removal loads By Land Use
6000
5000
Rem oval Load (kg)
4000
3000
2000
1000
0
Base Commercial Urban
Land Use
Figure 2 : Removal loads by land Use
Figure 2 shows the highest loads were removed from the urban sub-catchment during the
study period. However this sub-catchment had the largest catchment area (12.75 ha) and
number of Enviropods (52).
Removal Loads and Rainfall
Removal Loads exhibited seasonal variations, with the highest loads encountered in
autumn and during months of high rainfall. The lowest loads were encountered in
August and September when there was low rainfall. Rainfall depth is not the only
mechanism involved in the transportation of contaminants in stormwater. Rainfall
intensity greatly affects the size and amount of contaminants transported in overland
flow.
10
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