jswizzle3737/ontario_laws_and_regs huggingface dataset:
23. (1) Each discharger shall, on each day during the time period applicable to the plant under subsection 18 (4) or (5), collect a grab sample from each non-event process effluent monitoring stream at the discharger’s plant and shall analyze each sample for the parameter pH. (2) Each discharger shall, within each 24-hour period beginning with the collection of the first grab sample at the plant under subsection (1) on each day, collect two more grab samples from each non-event process effluent monitoring stream at the discharger’s plant and shall analyze each sample for the parameter pH. (3) There shall be an interval of at least four hours between each of the three collections at a stream under subsections (1) and (2) in each 24-hour period. (4) Each grab sample collected under subsections (1) and (2) shall be picked up within 24 hours of when it was collected. (5) Each grab sample picked up under subsection (4) shall be analyzed within 24 hours of when it was picked up. (6) Instead of complying with subsections (1) to (4) with respect to a stream, a discharger may use an on-line analyzer at the sampling point on the stream and analyze the effluent at the sampling point for the parameter pH once in each day during the time period applicable to the plant under subsection 18 (4) or (5), and two more times in each 24-hour period beginning with the first analysis at the plant under this subsection in each day. (7) There shall be an interval of at least four hours between each of the three analyses at a sampling point under subsection (6) in each 24-hour period. (8) Each discharger shall, in each 24-hour period ending at noon, collect a grab sample from each event process effluent monitoring stream at the discharger’s plant and shall analyze each sample for the parameter pH. (9) For the purposes of subsection (8), in relation to a stream of the type described in paragraph 2 of subsection 1 (3), a discharger may collect a grab sample from a radioactive liquid waste management system tank immediately before a discharge into the stream instead of collecting a grab sample from the sampling point on the stream.  O. Reg. 215/95, s. 23. (10) A discharger for the Lambton Thermal Generating Station need not comply with subsection (8). (11) Each discharger for the Lambton Thermal Generating Station may, on one day in each week, on a day on which samples are picked up at the plant under subsection 21 (20), collect a grab sample from each event process effluent monitoring stream at the discharger’s plant and shall analyze each sample for the parameter pH.  O. Reg. 525/95, s. 1. Monitoring — Acute Lethality Testing — Rainbow Trout