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)
	Percentage area actively operating (%)			30	estimated
	Area source emissions:
	E (g/m2/s)			3.113426E-05	calculated
	Line sources emissions with different width:
	E (g/m/s)	width (m)	8	2.490741E-04	calculated
			10	3.113426E-04	calculated
			18	5.604167E-04	calculated
			20	6.226852E-04	calculated
			22	6.849537E-04	calculated
			24	7.472222E-04	calculated
			26	8.094907E-04	calculated
			28	8.717593E-04	calculated
			32	9.962963E-04	calculated
			40	1.245370E-03	calculated
			45	1.401042E-03	calculated
			50	1.556713E-03	calculated
	Percentage area actively operating (%)			30	estimated
	Assuming 75% dust reduction:-			75	for watering twice a day together with strict implementation of other
	Area source emissions:				dust suppression measures as stipulated in
					the Air Pollution Control (Construction Dust) Regulation
	E (g/m2/s)			7.783565E-06	calculated
	Line sources emissions with different width:
	E (g/m/s)	width (m)	8	6.226852E-05	calculated
			10	7.783565E-05	calculated
			18	1.401042E-04	calculated
			20	1.556713E-04	calculated
			22	1.712384E-04	calculated
			24	1.868056E-04	calculated
			26	2.023727E-04	calculated
			28	2.179398E-04	calculated
			32	2.490741E-04	calculated
			40	3.113426E-04	calculated
			45	3.502604E-04	calculated
			50	3.891782E-04	calculated
2	Wind erosion of exposed areas
	TSP emission factor (Mg/hectare/yr)			0.85	from AP-42, Western surface coal mining
	Percentage area actively operating (%)			30	estimated
	Area source emissions:
	E (g/m2/s)			8.085997E-07	calculated
	Line sources emissions with different width:
	E (g/m/s)	width (m)	8	6.468798E-06	calculated
			10	8.085997E-06	calculated
			18	1.455479E-05	calculated
			20	1.617199E-05	calculated
			22	1.778919E-05	calculated
			24	1.940639E-05	calculated
			26	2.102359E-05	calculated
			28	2.264079E-05	calculated
			32	2.587519E-05	calculated
			40	3.234399E-05	calculated
			45	3.638699E-05	calculated
			50	4.042998E-05	calculated
	Percentage area actively operating (%)			30	estimated
	Assuming 75% dust reduction:-			75	for watering twice a day together with strict implementation of other
	Area source emissions:				dust suppression measures as stipulated in
					the Air Pollution Control (Construction Dust) Regulation
	Area source emissions:
	E (g/m2/s)			2.021499E-07	calculated
	Line sources emissions with different width:
	E (g/m/s)	width (m)	8	1.617199E-06	calculated
			10	2.021499E-06	calculated
			18	3.638699E-06	calculated
			20	4.042998E-06	calculated
			22	4.447298E-06	calculated
			24	4.851598E-06	calculated
			26	5.255898E-06	calculated
			28	5.660198E-06	calculated
			32	6.468798E-06	calculated
			40	8.085997E-06	calculated
			45	9.096747E-06	calculated
			50	1.010750E-05	calculated