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Metal and Diamond Mining Effluent Regulations (SOR/2002-222)

Regulations are current to 2021-09-11 and last amended on 2021-06-10. 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

ItemColumn 1Column 2Column 3Column 4
Deleterious SubstanceMaximum Authorized Monthly Mean ConcentrationMaximum Authorized Concentration in a Composite SampleMaximum Authorized Concentration in a Grab Sample
1Arsenic0.10 mg/L0.15 mg/L0.20 mg/L
2Copper0.10 mg/L0.15 mg/L0.20 mg/L
3Cyanide0.50 mg/L0.75 mg/L1.00 mg/L
4Lead0.08 mg/L0.12 mg/L0.16 mg/L
5Nickel0.25 mg/L0.38 mg/L0.50 mg/L
6Zinc0.40 mg/L0.60 mg/L0.80 mg/L
7Suspended Solids15.00 mg/L22.50 mg/L30.00 mg/L
8Radium 2260.37 Bq/L0.74 Bq/L1.11 Bq/L
9Un-ionized ammonia0.50 mg/L expressed as nitrogen (N)Not applicable1.00 mg/L expressed as nitrogen (N)

NOTE: The concentrations for items 1 to 8 are total values.

TABLE 2

ItemColumn 1Column 2Column 3Column 4
Deleterious SubstanceMaximum Authorized Monthly Mean ConcentrationMaximum Authorized Concentration in a Composite SampleMaximum Authorized Concentration in a Grab Sample
1Arsenic0.30 mg/L0.45 mg/L0.60 mg/L
2Copper0.30 mg/L0.45 mg/L0.60 mg/L
3Cyanide0.50 mg/L0.75 mg/L1.00 mg/L
4Lead0.10 mg/L0.15 mg/L0.20 mg/L
5Nickel0.50 mg/L0.75 mg/L1.00 mg/L
6Zinc0.50 mg/L0.75 mg/L1.00 mg/L
7Suspended Solids15.00 mg/L22.50 mg/L30.00 mg/L
8Radium 2260.37 Bq/L0.74 Bq/L1.11 Bq/L
9Un-ionized ammonia0.50 mg/L expressed as nitrogen (N)Not applicable1.00 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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