24-Hour TSP Monitoring Result at Station: SR77
Sampling Date	Weather Condition	Starting Time	Paper No.	Wt. of paper (g)			Elapse Time			Flow Rate (CFM)			Flow Rate (m3/min)			Total Volume (m³)	TSP Concentration (μg/m3)	Action Level (μg/m3)	Limit Level (μg/m3)	Wind speed m/s	Wind direction	NOE	IR
				Initial Wt.	Final Wt.	Wt. of Dust	Initial	Final	Sampling Hour	Initial	Final	Avg Flow Rate	Initial	Final	Avg Flow Rate
4-Sep-20	Fine	13:20	-	-	-	-	-	-	-	-	-	-	-	-	-	-	43.9	170.3	260.0	<5	N			25-Aug-20
10-Sep-20	Fine	13:10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	61.2	170.3	260.0	<5	N			8-Oct-20
16-Sep-20	Fine	13:00	-	-	-	-	-	-	-	-	-	-	-	-	-	-	57.4	170.3	260.0	<5	N
22-Sep-20	Fine	13:45	-	-	-	-	-	-	-	-	-	-	-	-	-	-	19.5	170.3	260.0	<5	N
28-Sep-20	Cloudy	13:30	-	-	-	-	-	-	-	-	-	-	-	-	-	-	44.3	170.3	260.0	<5	N
																Average	45.3
																Min	19.5
																Max	61.2
Note:	No major dust source observed during the monitoring period
	Data in Bold denotes exceedanece of respective Action Level
	Data in Bold Underline denotes exceedance of respective Limit Level
	The electricity supply of HVS at AM1(SR77) was suspended from 16 May 2019 and was no longer available. In order to have a more secure electricity supply, an alternative Handheld TSP meter was proposed to use for the temporary monitoring  of 24-hr & 1hr air quality from 22 May 2019.
		2015/12/01