In order to safeguard both the treatment plant and the quality of the discharged effluent, operators will not accept any loads that do not pass the initial assessment or any loads that are suspected of not meeting the acceptance criteria.
The carrier will be informed in writing, and a non-conforming load form will be completed and submitted to the DWER Controlled Waste Team.
What are our Discharge Criteria?
Initial SBWWTP Site Assessment:
| Analyte |
Units |
Limit |
| pH |
No units |
6-9 |
| Electrical Conductivity @ 25ºC |
µS/cm |
Less Than 5000 |
| Total Petroleum Hydrocarbons |
Pass/Fail |
Pass |
| Physical Characteristics |
Visual |
Operator Discretion |
Further testing completed by the CKB's Contracted NATA Accredited Laboratory:
| Analyte |
Units |
Limit |
| pH |
No units |
6-9 |
| Electrical Conductivity @ 25ºC |
µS/cm |
Less Than 5000 |
| Total Suspended Solids (TSS) |
mg/l (ppm) |
Less Than 1500 |
| Arsenic |
mg/l (ppm) |
Less Than 5 |
| Cadmium |
mg/l (ppm) |
Less Than 5 |
| Chromium |
mg/l (ppm) |
Less Than 10 |
| Copper |
mg/l (ppm) |
Less Than 5 |
| Lead |
mg/l (ppm) |
Less Than 10 |
| Molybdenum |
mg/l (ppm) |
Less Than 10 |
| Nickel |
mg/l (ppm) |
Less Than 10 |
| Selenium |
mg/l (ppm) |
Less Than 5 |
| Silver |
mg/l (ppm) |
Less Than 5 |
| Zinc |
mg/l (ppm) |
Less Than 10 |
| Iron |
mg/l (ppm) |
Less Than 100 |
| Total Cyanide |
mg/l (ppm) |
Less Than 3 |
| Ammonia as N |
mg/l (ppm) |
Less Than 50 if pH Less Than 8 |
| Less Than 200 if pH greater Than 8 |
| Oil and grease |
mg/l (ppm) |
Less Than 50 |
| Chemical Oxygen Demand (COD) |
mg/l (ppm) |
Less Than 3000 |
| Biochemical Oxygen Demand (BOD) |
mg/l (ppm) |
Less Than 3000 |
| Total Petroleum Hydrocarbons |
mg/l (ppm) |
Less Than 10 |
|
|
ug/l (ppb) |
Less Than 80 |
| Toluene |
ug/l (ppb) |
Less Than 1300 |
| Ethylbenzene |
ug/l (ppb) |
Less Than 1000 |
| Total Xylenes |
ug/l (ppb) |
Less Than 1400 |
Testing if Site would like to recommence discharge after the site has been rejected. Completed at Controlled Waste Contractors Cost at a NATA Accredited Laboratory:
| Analyte |
Units |
Limit |
| pH |
No units |
6-9 |
| Electrical Conductivity @ 25ºC |
µS/cm |
Less Than 5000 |
| Oil and grease |
mg/l (ppm) |
Less 50 |
| Chemical Oxygen demand (COD) |
mg/l (ppm) |
Less 3000
|