16. (1) Each discharger shall ensure that each analytical result obtained for each limited parameter from each sample collected from each non-event process effluent monitoring stream at the discharger’s plant does not exceed the daily concentration limit specified for the parameter in Column 4 of the Table for the plant in Schedule 2. O. Reg. 310/17, s. 2 (1). (2) Each discharger shall ensure that each monthly average concentration calculated for a limited parameter under subsection 11 (1) in connection with each non-event process effluent monitoring stream at the discharger’s plant does not exceed the monthly average concentration limit specified for the parameter in Column 5 of the Table for the plant in Schedule 2. O. Reg. 310/17, s. 2 (2). (3) Despite subsections (1) and (2), where the non-event process effluent stream is of the type described in paragraph 1 of subsection 1 (2) and aluminum-based water treatment chemicals are not used to treat effluent in the water treatment plant that discharges into the stream, the discharger need not ensure, (a) that the analytical result obtained for the parameter aluminium does not exceed the daily concentration limit specified for the parameter in Column 4 of the Table for the plant in Schedule 2; or (b) that the monthly average concentration calculated for the parameter aluminum does not exceed the monthly average concentration limit specified for the parameter in Column 5 of the Table for the plant in Schedule 2. O. Reg. 310/17, s. 2 (3, 4). (4) Each discharger shall ensure that each analytical result obtained for each limited parameter from each sample collected from each event process effluent monitoring stream at the discharger’s plant does not exceed the daily concentration limit specified for the parameter in Column 4 of the Table for the plant in Schedule 3. O. Reg. 310/17, s. 2 (5). (5) Each discharger shall ensure that each monthly average concentration calculated for a limited parameter under section 12 in connection with each event process effluent monitoring stream at the discharger’s plant does not exceed the monthly average concentration limit specified for the parameter in Column 5 of the Table for the plant in Schedule 3. O. Reg. 310/17, s. 2 (6). (6) Each discharger shall control the quality of each non-event process effluent monitoring stream and each event process effluent monitoring stream at the discharger’s plant to ensure that the pH value of any sample collected at a non-event process effluent sampling point or event process effluent sampling point at the plant is within the range of 6.0 to 9.5.  O. Reg. 215/95, s. 16. Lethality Limits

17. (1) Each discharger shall control the quality of each non-event process effluent monitoring stream, each event process effluent monitoring stream and each building effluent monitoring stream at the discharger’s plant to ensure that each rainbow trout acute lethality test and each Daphnia magna acute lethality test performed on any grab sample collected at a non-event process effluent sampling point, event effluent sampling point or building effluent sampling point at the plant results in mortality for no more than 50 per cent of the test organisms in 100 per cent effluent.  O. Reg. 215/95, s. 17. (2) Subsection (1) does not apply to a rainbow trout acute lethality test or Daphnia magna acute lethality test performed on a grab sample collected at a sampling point if, (a) the sampling point is located on an effluent stream affected by chlorination that is authorized by an environmental compliance approval and that is used for the prevention or reduction of biofouling; (b) the acute lethality test results in mortality for more than 50 per cent of the test organisms in 100 per cent effluent and laboratory analysis indicates that this result is caused solely by the presence of chlorine; and (c) a rainbow trout acute lethality test and a Daphnia magna acute lethality test performed on a grab sample collected at a place that is located downstream of the sampling point and before the effluent from the effluent stream is discharged from the plant both result in mortality for no more than 50 per cent of the test organisms in 100 per cent effluent.  O. Reg. 174/99, s. 1; O. Reg. 272/11, s. 1. (3) If, pursuant to subsection (2), subsection (1) does not apply to an acute lethality test performed on a grab sample collected at a sampling point, the place referred to in clause (2) (c) shall be deemed, for the purposes of subsection (1) and section 26, to be a sampling point established under section 7.  O. Reg. 174/99, s. 1. (4) If, pursuant to subsection (2), subsection (1) does not apply to an acute lethality test performed on a grab sample collected at a sampling point, (a) the discharger shall take steps to ensure that future rainbow trout acute lethality tests and Daphnia magna acute lethality tests performed on grab samples collected at the sampling point will result in mortality for no more than 50 per cent of the test organisms in 100 per cent effluent; and (b) before July 1 in each year following the calendar year in which subsection (1) did not apply, the discharger shall submit to the Director a report on what has been done and what will be done to comply with clause (a).  O. Reg. 174/99, s. 1. (5) A report under clause (4) (b) shall include a timetable, including milestone dates and a completion date, for ensuring that future rainbow trout acute lethality tests and Daphnia magna acute lethality tests performed on grab samples collected at the sampling point will result in mortality for no more than 50 per cent of the test organisms in 100 per cent effluent.  O. Reg. 174/99, s. 1. (6) Subsections (2) to (5) do not apply after July 1, 2002.  O. Reg. 174/99, s. 1. PART V   MONITORING Monitoring — General