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Wastewater Systems Effluent Regulations (SOR/2012-139)

Regulations are current to 2020-09-09 and last amended on 2015-01-01. Previous Versions

PART 1Authorization to Deposit (continued)

Monitoring (continued)

Test Methods

Marginal note:CBOD matter

 The demand due to the quantity of carbonaceous biochemical oxygen demanding matter in the effluent must be determined in accordance with a five-day biochemical oxygen demand test with nitrification inhibition.

Marginal note:Suspended solids

 The concentration of suspended solids in the effluent must be determined in accordance with a total suspended solids test.

Marginal note:Un-ionized ammonia

  •  (1) The concentration of un-ionized ammonia in the effluent must be determined in accordance with the following formula:

    total ammonia × 1 ÷ (1 +109.56 – pH)

    where

    total ammonia
    is the concentration of total ammonia — namely, un-ionized ammonia (NH3) plus ionized ammonia (NH4+) — determined in accordance with subsection (2), expressed in mg/L as nitrogen (N); and
    pH
    is the pH of the effluent adjusted to 15°C ± 1°C and determined in accordance with subsection (3).
  • Marginal note:Concentration of total ammonia

    (2) The concentration of total ammonia in the effluent must be determined by using an aliquot of the same sample of effluent from which the pH of the effluent was determined and testing it in accordance with a total ammonia test.

  • Marginal note:pH

    (3) The pH of the effluent must be determined by using an aliquot of the same sample of effluent from which the concentration of total ammonia of the effluent was determined and testing it in accordance with a pH test.

Marginal note:Acute lethality

 The acute lethality of the effluent must be determined in accordance with

  • (a) Reference Method EPS 1/RM/13 using the procedure set out in section 5 or 6 of that Method; or

  • (b) paragraph (a) using the Procedure for pH Stabilization EPS 1/RM/50.

Accredited Laboratory

Marginal note:Accredited laboratory

 A determination referred to in subsection 10(4) or (5) or 11(2) or (3), paragraph 34(1)(a) or (b) or (4)(a) and any determination necessary to make that determination — other than the determination of pH of water necessary to make the determination referred to in subsection 34(3) — must be made

  • (a) by a laboratory

    • (i) that is accredited under the International Organization for Standardization standard ISO/IEC 17025:2005 entitled General requirements for the competence of testing and calibration laboratories, as amended from time to time, by an accrediting body that is a signatory to the International Laboratory Accreditation Cooperation (ILAC) Mutual Recognition Arrangement, and

    • (ii) whose accreditation includes the analytical method used to make the determination; or

  • (b) by a laboratory

    • (i) that is accredited under the Environment Quality Act, R.S.Q., c. Q-2, as amended from time to time, by an accreditation body that is recognized in accordance with that Act, and

    • (ii) whose accreditation includes the analytical method used to make the determination.

Record Keeping

Marginal note:Information to be recorded

 The owner or operator of a wastewater system must keep the report on each determination made by an accredited laboratory referred to in section 16 and a record that contains the following information:

  • (a) for the final discharge point,

    • (i) the date of each day on which effluent was not deposited via the final discharge point,

    • (ii) the date of each day on which effluent was deposited via the final discharge point, and

    • (iii) for each of the days referred to in subparagraph (ii)

      • (A) for a wastewater system whose daily volume of effluent referred to in paragraph 7(1)(a) was determined using monitoring equipment referred to in section 9

        • (I) the daily volume of the effluent, expressed in m3, if that volume is yielded by a continuous measure, and

        • (II) the estimated daily volume, expressed in m3, as determined in accordance with subsection 7(3) and the results of the measurement and the calculation referred to in paragraphs 7(3)(a) and (b), in any other case, and

      • (B) for an intermittent wastewater system whose daily volume of effluent referred to in paragraph 7(1)(a) was determined using a method of estimation in accordance with subsection 7(4), the estimated daily volume, expressed in m3, and

    • (iv) the average daily volume of effluent deposited annually, expressed in m3, determined in accordance with subsection 8(1), if applicable;

  • (b) for each combined sewer overflow point via which effluent is deposited because of precipitation, including the melting of snow or ice, that resulted in excess wastewater in the wastewater system,

    • (i) the date of each day on which effluent was deposited via the overflow point,

    • (ii) for each of those days, the duration or estimated duration, expressed in hours, of the deposit, along with an indication of whether it is the duration or an estimated duration and

      • (A) the daily volume of the effluent deposited, expressed in m3, if that volume is yielded by a continuous measure, and

      • (B) the estimated daily volume of the effluent deposited, expressed in m3, in any other case,

    • (iii) the volume or estimated volume, expressed in m3, of effluent for each month during which effluent was deposited via the overflow point, and

    • (iv) the number of days in each of those months during which effluent was deposited via the overflow point;

  • (c) for any monitoring equipment referred to in section 9,

    • (i) a description, including its type,

    • (ii) if applicable, the manufacturer’s specifications, the year of manufacture and the model number,

    • (iii) each date on which the equipment was calibrated and its degree of accuracy after each calibration, and

    • (iv) the date on which the equipment was installed and, if applicable, the date on which it ceased to be used for monitoring and on which it was replaced;

  • (d) for each sample referred to in subsection 10(1), (2) or (3), as the case may be, and, if applicable, subsection 6(4),

    • (i) the results of the determinations referred to in subsection 10(4), and

    • (ii) a statement as to whether the sample is a grab sample or a composite sample and the date on which the sample was taken;

  • (e) for each sample referred to in subsections 10(5) and, if applicable 6(4),

    • (i) the results of the determination referred to in subsection 10(5),

    • (ii) the results of the determination of the concentration of total ammonia in the effluent and of the pH of the effluent referred to in subsections 14(2) and (3), respectively, that were used to make the determination referred to in subsection 10(5), and

    • (iii) a statement as to whether the sample is a grab sample or a composite sample and the date on which the sample was taken;

  • (f) for each sample referred to in section 11 whose acute lethality was determined in accordance with section 15, the information referred to in section 8 of Reference Method EPS 1/RM/13 and, if the acute lethality of the effluent was determined in accordance with that method used with the Procedure for pH Stabilization EPS 1/RM/50, section 3 of that procedure;

  • (g) if the owner or operator holds of a temporary authorization issued under subsection 36(1),

    • (i) for each sample referred to in paragraph (d),

      • (A) the result of the determination referred to in paragraph 38(b),

      • (B) the results of the determination of the concentration of total ammonia in the effluent and of the pH of the effluent referred to in subsections 14(2) and (3), respectively, that were used to make the determination referred to in clause (A),

      • (C) a statement as to whether the sample is a grab sample or a composite sample and the date on which the sample was taken, and

    • (ii) the result of the determination referred to in paragraph 38(c) for each August and a description of how that determination was made.

 
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