Table 4.1       Action and Limit Levels for Water Quality

Parameters

Action

Limit

DO in mg/L

(mid-depth)

5 %-ile of baseline data

 

4 mg/L

 

SS in mg/L (mid-depth)

95 %-ile of baseline data or 120% of control station’s SS on the same day of measurement

99 %-ile of baseline or 130% of control station's SS on the same day of measurement

 

Turbidity in NTU (mid-depth)

 

95 %-ile of baseline data or 120% of control station’s turbidity on the same day of measurement

99 %-ile of baseline or 130% of control station's turbidity on the same day of measurement

Notes:  1.   For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.

2.        For SS and turbidity, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.