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 – Sha Lo Wan AMS4 – San Tau |
While the highest dust impact was expected |
|
24-hr TSP |
Once / 6 days |
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||
|
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 – Sha Lo Wan NMS4 – San Tau |
Daytime on normal weekdays (0700-1900 hrs) |
|
Water Quality |
·
Temperature(°C) ·
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 ± 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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