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 ¡V Sha Lo Wan

AMS4 ¡V 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 ¡V Sha Lo Wan

NMS4 ¡V San Tau

Daytime on normal

weekdays

(0700-1900 hrs)

Water Quality

¡P         Temperature(¢XC)

¡P         pH(pH unit)

¡P         turbidity (NTU)

¡P         water depth (m)

¡P         salinity (ppt)

¡P         dissolved oxygen (DO) (mg/L and % of saturation)

¡P         suspended solids (SS) (mg/L)

Impact monitoring: 3 days per week, at mid-flood and mid-ebb tides (within ¡Ó 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

¡P      3 water depths: 1m below sea surface, mid-depth and 1m above sea bed.

¡P      If the water depth is less than 3m, mid-depth sampling only.

¡P      If water depth less than 6m, mid-depth may be omitted.

Dolphin

Line-transect Methods

Twice per

month

West Lantau

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