Metal and Diamond Mining Effluent Regulations (SOR/2002-222)
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Regulations are current to 2024-10-14 and last amended on 2024-07-19. Previous Versions
SCHEDULE 4(Subsection 1(2), subparagraphs 4(1)(a)(i) and (ii), subsection 13(1), paragraph 13(3)(a), subparagraph 22(c)(i) and paragraph 24(1)(a))Maximum Authorized Concentrations of Prescribed Deleterious Substances
TABLE 1
| Item | Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|---|
| Deleterious Substance | Maximum Authorized Monthly Mean Concentration | Maximum Authorized Concentration in a Composite Sample | Maximum Authorized Concentration in a Grab Sample | |
| 1 | Arsenic | 0.10 mg/L | 0.15 mg/L | 0.20 mg/L |
| 2 | Copper | 0.10 mg/L | 0.15 mg/L | 0.20 mg/L |
| 3 | Cyanide | 0.50 mg/L | 0.75 mg/L | 1.00 mg/L |
| 4 | Lead | 0.08 mg/L | 0.12 mg/L | 0.16 mg/L |
| 5 | Nickel | 0.25 mg/L | 0.38 mg/L | 0.50 mg/L |
| 6 | Zinc | 0.40 mg/L | 0.60 mg/L | 0.80 mg/L |
| 7 | Suspended Solids | 15.00 mg/L | 22.50 mg/L | 30.00 mg/L |
| 8 | Radium 226 | 0.37 Bq/L | 0.74 Bq/L | 1.11 Bq/L |
| 9 | Un-ionized ammonia | 0.50 mg/L expressed as nitrogen (N) | Not applicable | 1.00 mg/L expressed as nitrogen (N) |
NOTE: The concentrations for items 1 to 8 are total values.
TABLE 2
| Item | Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|---|
| Deleterious Substance | Maximum Authorized Monthly Mean Concentration | Maximum Authorized Concentration in a Composite Sample | Maximum Authorized Concentration in a Grab Sample | |
| 1 | Arsenic | 0.30 mg/L | 0.45 mg/L | 0.60 mg/L |
| 2 | Copper | 0.30 mg/L | 0.45 mg/L | 0.60 mg/L |
| 3 | Cyanide | 0.50 mg/L | 0.75 mg/L | 1.00 mg/L |
| 4 | Lead | 0.10 mg/L | 0.15 mg/L | 0.20 mg/L |
| 5 | Nickel | 0.50 mg/L | 0.75 mg/L | 1.00 mg/L |
| 6 | Zinc | 0.50 mg/L | 0.75 mg/L | 1.00 mg/L |
| 7 | Suspended Solids | 15.00 mg/L | 22.50 mg/L | 30.00 mg/L |
| 8 | Radium 226 | 0.37 Bq/L | 0.74 Bq/L | 1.11 Bq/L |
| 9 | Un-ionized ammonia | 0.50 mg/L expressed as nitrogen (N) | Not applicable | 1.00 mg/L expressed as nitrogen (N) |
NOTE: The concentrations for items 1 to 8 are total values.
- SOR/2006-239, s. 25
- SOR/2018-99, s. 32
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