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Appendix 4.1
Calculation of Dust Emission Factors |
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Sites |
D1 |
D2 |
SAR |
NAR |
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Spoil Quantity (m3) |
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330000 |
22280 |
8700 |
124165 |
9900 |
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no of days |
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300 |
600 |
300 |
600 |
1050 |
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Truck size |
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6 |
8 |
8 |
8 |
8 |
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No of areas |
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7 |
3 |
1 |
3 |
2 |
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Density (kg/m3) |
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1990 |
1990 |
1990 |
1990 |
1990 |
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Handing (kg/hr) |
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199000.00 |
6717.76 |
5246.36 |
37437.63 |
1705.71 |
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per site (kg/hr) |
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28428.57 |
2239.25 |
5246.36 |
12479.21 |
852.86 |
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Trucks per hour |
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16.67 |
0.42 |
0.33 |
2.35 |
0.11 |
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Round tip / hr |
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33.33 |
0.84 |
0.66 |
4.70 |
0.21 |
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mixers (185trip/day) |
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Round tip/hr |
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33.64 |
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total |
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66.97 |
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Loading/Unloading
(AP42, 5th ed., S13.2.4) |
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E = k*0.0016*(U/2.2)^1.3 / (M/2)^1.4 |
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k |
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0.74 |
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E= |
0.000124711 |
kg/Mg |
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U |
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1 |
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M |
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4.8 |
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Emission rate (g/s) |
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9.85E-04 |
7.76E-05 |
1.82E-04 |
4.32E-04 |
2.95E-05 |
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mitigate |
50% |
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4.92E-04 |
3.88E-05 |
9.09E-05 |
2.16E-04 |
1.48E-05 |
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Haul
Road (AP42, 5ht ed., Section 13.2.2) |
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E = k ((s/12)^a) ((W/3)^b) / ((M/0.2)^c) |
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E = |
4.041587667 |
lb/VMT |
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k |
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10 |
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1.14E+03 |
g/VKT |
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a |
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0.8 |
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b |
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0.5 |
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c |
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0.4 |
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s |
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10 |
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W |
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15 |
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M |
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10 |
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1 lb/VMT
= 281.9 g/VKT |
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Emission rate (g/m/s) |
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2.12E-02 |
2.67E-04 |
2.09E-04 |
1.49E-03 |
6.78E-05 |
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mitigate |
97% |
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6.36E-04 |
8.01E-06 |
6.26E-06 |
4.47E-05 |
2.03E-06 |
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Wind
erosion (AP-42, 5th ed., Table 11.9.4) |
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0.85 Mg/heatre/year |
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Area |
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Line (12m width) |
Line (16m width) |
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E= |
2.69533E-06 |
g/m2/s |
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3.2344E-05 |
g/m/s |
4.31253E-05 |
g/m/s |
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mitigate |
50% |
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Area |
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Line (12m width) |
Line (16m width) |
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E= |
1.34767E-06 |
g/m2/s |
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1.6172E-05 |
g/m/s |
2.15627E-05 |
g/m/s |