Appendix D - Summary of Action and Limit Levels

 

Table 1 – Action and Limit Levels for 1-hour TSP

Location

Action Level

Limit Level

AM1

302.1 mg/m3

500 mg/m3

AM1A

302.1 mg/m3 *

500 mg/m3

AM2

301.9 mg/m3

500 mg/m3

AM3

301.9 mg/m3

500 mg/m3

AM4

302.3 mg/m3

500 mg/m3

* Adopted from the Action level of AM1 for a distance within 100m

 

Table 2 – Action and Limit Levels for 24-hour TSP

Location

Action Level

Limit Level

AM1

176.6 mg/m3

260 mg/m3

AM1A

176.6 mg/m3 *

260 mg/m3

AM2

178.6 mg/m3

260 mg/m3

AM3

193.1 mg/m3

260 mg/m3

AM4

198.5 mg/m3

260 mg/m3

* Adopted from the Action level of AM1 for a distance within 100m

 

Table 3 – Action and Limit Levels for Construction Noise (0700-1900 hrs of normal weekdays)

Location

Action Level

Limit Level

NM1

When one documented complaint is received

from any one of the sensitive receivers

65/70 dB(A)*

NM2

75 dB(A)

NM3

65/70 dB(A)*

NM4

75 dB(A)

NM5

75 dB(A)

NM6

65/70 dB(A)*

NM7

75 dB(A)

*Daytime noise Limit Level of 70 dB(A) applies to education institutions, while 65dB(A) applies during school examination period