Salem, Oregon
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Local Wastewater Discharge Limits
Local limits were evaluated and developed during the first half of 2007 and adopted by the City Council in July 2007.
| Parameter | Limit | Maximum Allowable Headworks Loading (MAHL) lbs/day | Limiting Factor |
|---|---|---|---|
| Arsenic | 0.31 mg/l | 5.5244 | Process Inhibitions |
| Cadmium | 0.15mg/l | 2.5803 | Biosolids Quality |
| Chromium | 4.91mg/l | 108.6457 | Process Inhibitions |
| Copper | 3.19mg/l | 4.0969 | Receiving Stream Quality |
| Cyanide | 1.84mg/l | 32.3675 | Process Inhibitions |
| Lead | 0.54mg/l | 9.9646 | Receiving Stream Quality |
| Mercury | 0.006mg/l | 0.2052 | Receiving Stream Quality |
| Molybdenum | 4.32mg/l | 8.1744 | Biosolids Quality |
| Nickel | 3.14mg/l | 22.6587 | Process Inhibitions |
| Selenium | 0.61mg/l | 12.5761 | Biosolids Quality |
| Silver | 0.25mg/l | 0.6926 | Receiving Stream Quality |
| Zinc | 3.36mg/l | 97.1026 | Process Inhibitions |
| pH | 6.5 - 10.0 | N/A | Process Inhibitions |
Approved by Salem City Council on July 2, 2007