Wastewater Systems Effluent Regulations

Marginal note:Authorized deposits — transitional authorization

• 28 (1) A holder of a transitional authorization in respect of a wastewater system is authorized — during a given calendar year, quarter or month, determined in accordance with subsection 6(2), in the period of authorization — to deposit effluent that contains any of the deleterious substances prescribed in section 5 via the final discharge point if — during the previous calendar year, previous quarter or previous month — the effluent met the following conditions:

  • (a) the average carbonaceous biochemical oxygen demand due to the quantity of CBOD matter in the effluent referred to in paragraph 6(1)(a), determined in accordance with subsections 6(2) and (3), did not exceed

    • (i) 1.25 times the average determined for the carbonaceous biochemical oxygen demand due to the quantity of CBOD matter referred to in paragraph 25(1)(k), if the product of that multiplication is greater than 25 mg/L, and

    • (ii) 25 mg/L, in any other case;

  • (b) the average concentration of suspended solids in the effluent referred to in paragraph 6(1)(b), determined in accordance with subsections 6(2) and (3), did not exceed

    • (i) 1.25 times the average concentration of suspended solids referred to in paragraph 25(1)(k), if the product of that multiplication is greater than 25 mg/L, and

    • (ii) 25 mg/L, in any other case;

  • (c) the average concentration of total residual chlorine in the effluent referred to in paragraph 6(1)(c) did not exceed 0.02 mg/L, if chlorine, or one of its compounds, was used in the treatment of wastewater; and

  • (d) the maximum concentration of un-ionized ammonia in the effluent referred to in subsection 6(1) was less than

    • (i) 1.25 times the maximum concentration referred to in paragraph 25(1)(o), if the product of that multiplication is greater than or equal to 1.25 mg/L, expressed as nitrogen (N), at 15°C ± 1°C, and

    • (ii) 1.25 mg/L, expressed as nitrogen (N), at 15°C ± 1°C, in any other case.

• Marginal note:Authorized deposits — fictional consolidated wastewater system

  (2) A holder of a transitional authorization in respect of a fictional consolidated wastewater system referred to in section 4 is also authorized, during the given calendar year, quarter or month referred to in subsection (1), to deposit effluent that contains any of the deleterious substances prescribed in section 5 via the final discharge point of each of the original wastewater systems that constitute the fictional consolidated wastewater system if the effluent deposited via the final discharge point of each of those original wastewater systems — during the previous calendar year, previous quarter or previous month — met the conditions set out in subsection (1).