Table 3.1 Summary of Impact EM&A
Requirements
Type of Monitoring |
Parameter |
Frequency |
Location |
Remarks |
Air Quality |
1-hr TSP |
Three times / 6 days |
AMS1 ¨C Sha Lo
Wan AMS4 ¨C San Tau |
While the highest dust impact was expected |
24-hr TSP |
Once / 6 days |
-- |
||
Noise |
L10(30 min.) dB(A) L90(30 min.) dB(A) Leq(30 min.) dB(A) (as six consecutive Leq, 5min readings) |
Once per week |
NMS1 ¨C Sha Lo
Wan NMS4 ¨C San Tau |
Daytime on normal weekdays (0700-1900 hrs) |
Water Quality |
¡¤
Temperature(¡ãC) ¡¤
pH(pH unit) ¡¤
turbidity (NTU) ¡¤
water depth (m) ¡¤
salinity (ppt) ¡¤
dissolved oxygen (DO) (mg/L and % of saturation) ¡¤
suspended solids (SS) (mg/L) |
Impact monitoring: 3 days per week, at
mid-flood and mid-ebb tides (within ¡À 1.75 hour of the predicted time)
during the construction period of the Contract |
IS1, IS2, IS3 IS4, CS1, CS2, SR1, SR2, SR3, SR6, ST1,
ST2, ST3, SRA |
¡¤
3 water depths: 1m below
sea surface, mid-depth and 1m above sea bed. ¡¤
If the water depth is less than 3m, mid-depth sampling
only. ¡¤
If water depth less than 6m, mid-depth may be omitted. |
Dolphin |
Line-transect
Methods |
Twice per month |
West Lantau |
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