Appendix 3.1     Calculations of Dust Emission Factors
Description of Dust Emission Source TSP Remarks
1 General construction activities
TSP emission factor (Mg/hectare/month) 2.69 from AP-42 5th edition (S13.2.3.3)
Width of the exposed area along the trenching contruction (m) 2 estimated
Assuming no dust mitigation:-
E (g/m2/s) 1.037809E-04 calculated
E (g/m2/s) 9.340278E-05 10% mitigation
E (g/m/s) 2.075617E-04 calculated
2 Wind erosion of exposed areas
E (Mg/hectare/yr) 0.85 from AP-42 5th edition (S11.9, Table 11.9-4), Western surface coal mining
Width of the exposed area (m) 2 estimated
E (g/m2/s) 2.695332E-06 calculated
E (g/m/s) 5.390665E-06 calculated