Licence 2613
Premises:
Walcha Sewage Treatment Plant, Oxley Highway, Walcha NSW 2354.
The concentration limit of the pollutants at a discharging point is given below:
|
Pollutant |
Units of Measure |
90 percentile concentration limit |
|
Oil & Grease | Milligrams per litre | 10 |
|
pH | pH | 6.5 - 8.5 |
|
Total Suspended Solids | Milligrams per litre | 30 |
|
Biochemical oxygen deman | Milligrams per litre | 20 |
The licensee is not taken to have exceeded a quality limit specified in this licence for BOD, TSS or pH if:
-
Monitoring by the licensee shows that the level of chlorophyll-a in
the maturation ponds during any exceedance was 50ug/L or more (showing
that the exceedance was caused by excessive algal growth); and
-
The liquid waste entering the maturation ponds during the exceedance complies with the quality limit.
Monitoring Results for 2021 - 2022
Monitoring Points Map
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