jswizzle3737/ontario_laws_and_regs huggingface dataset:
42. (1) Each discharger shall report to the Director the results of all monitoring performed under section 31, together with the date on which each sample was picked up, no later than 60 days after the end of each semi-annual period in which the monitoring was performed. (2) A report under subsection (1) shall include a plot of percentage reduction in growth or reproduction against the logarithm of test concentration and shall include a calculation of the concentration at which a 25 per cent reduction in growth or reproduction would occur.  O. Reg. 63/95, s. 42.
43. Omitted (revokes other Regulations).  O. Reg. 63/95, s. 43.