Metal and Diamond Mining Effluent Regulations
Version of the schedule from 2006-10-03 to 2018-05-31:
SCHEDULE 4(Section 3, paragraph 4(1)(a), subsections 12(1) and (3), section 13, subsections 15(1), 19.1(1) and 20(1), paragraphs 21(2)(b) and (f), 24(1)(a) and 34(1)(b), subsection 34(3), paragraphs 34(4)(a) and (5)(a) and (b), 35(2)(b), 36(d) and 37(1)(a) and Schedules 5 and 7)
Authorized Limits of Deleterious Substances
| 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 | 0.50 mg/L | 0.75 mg/L | 1.00 mg/L |
| 2 | Copper | 0.30 mg/L | 0.45 mg/L | 0.60 mg/L |
| 3 | Cyanide | 1.00 mg/L | 1.50 mg/L | 2.00 mg/L |
| 4 | Lead | 0.20 mg/L | 0.30 mg/L | 0.40 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 | Total 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 |
NOTE: All concentrations are total values.
- SOR/2006-239, s. 25
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