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.