Table 5.4     Additional Water Quality Monitoring Parameters and Frequency

Monitoring Station(s)

Parameters, unit

Depth

Frequency

River Beas

SYR-CS1

SYR-IS1

·         Temperature (oC)

·         pH (pH unit)

·         Turbidity (NTU)

·         Water depth (m)

·         Salinity (ppt)

·         Dissolved Oxygen (DO) (mg/L and % of saturation)

·         Suspended Solids (SS) (mg/L)

·         Arsenic (As) (µg/L)

·         3 water depths: 1m below water surface, mid-depth and 1m above river bed.

·         If the water depth was less than 3m, mid-depth sampling only.

·         If water depth was less than 6m, mid-depth might be omitted.

3 days per week, for 2 weeks prior to the commencement of  construction works

River Indus and near Siu Hang San Tsuen Stream

NTR-CS1

NTR-IS1

SHST-IS2

MWR-IS3

·         Temperature (oC)

·         pH (pH unit)

·         Turbidity (NTU)

·         Water depth (m)

·         Salinity (ppt)

·         Dissolved Oxygen (DO) (mg/L and % of saturation)

·         Suspended Solids (SS) (mg/L)