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/m^3	500 mg/m^3
AM1A	302.1 mg/m^3*	500 mg/m^3
AM2	301.9 mg/m^3	500 mg/m^3
AM3	301.9 mg/m^3	500 mg/m^3
AM4	302.3 mg/m^3	500 mg/m^3

* 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/m^3	260 mg/m^3
AM1A	176.6 mg/m^3*	260 mg/m^3
AM2	178.6 mg/m^3	260 mg/m^3
AM3	193.1 mg/m^3	260 mg/m^3
AM4	198.5 mg/m^3	260 mg/m^3

* 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