Appendix 3.5	Calculations of NO2 Concentration inside the Two Sections
	of Deckover on Road D1
Section between Area 138A/B			-  Overall Concentrations
and  Area 65D R1 Site
Four assessment points (ASRs P5-P8) at the boundary of the Deckover are chosen (see Figure A3.2).
Using CALINE4 model, the NO2 concentrations at the 4 assessment points at different levels are calculated
(see Appendix A3.1).  The highest concentration among the four assessment points is assumed to be the background
NO2 concentration inside the Deckover section.
		Elevation	NO2 Concentrations (ug/m3) at Various Levels
		(mAG)	P5	P6	P7	P8
		0	282	274	136	143
		5	204	199	249	240
		10	142	140	180	182
Therefore, the background concentration inside the Deckover section is								282	ug/m3.
Overall Maximum NO2 concentration inside
the Deckover section (Normal Speed)			=	12.8 + 282
			=	295	ug/m3
Overall Maximum NO2 concentration inside
the Deckover section (Worse Case)			=	42.2 + 282
			=	325	ug/m3