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RFI - Attachment F - Engineering Report
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Nitrogen Loading Rates
3.50
3.00
2.50
Sub 1200 Microns
Kg/ha/yr
2.00
Over 1200 Microns
1.50
All Particals
1.00
0.50
0.00
Commercial Urban Base
Categories
Figure 23: Nitrogen loading rates by land use
Phosphorus
The highest loading rates were equally encounter in the commercial and base sub
catchments as can be seen in Figure 24. There is a significant relationship between traffic
density and traffic loading. Mechanical break down of plant debris and earth will lead to
rapid release of Phosphorous (Cowen & Lee)
Phosporous Loading Rates
0.80
0.70
0.60
0.50 Sub 1200 Microns
kg/ha/yr
0.40 Over 1200 Microns
0.30 All Particals
0.20
0.10
0.00
Commercial Urban Base
Catorgory
Figure 24: Phosphorous Loading Rates by land use
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