Q-2, r. 34.1 - Regulation respecting municipal wastewater treatment works

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2. For the purposes of this Regulation,
annual average flow rate” means
(1)  for existing municipal wastewater treatment works, the flow rate of wastewater calculated at the affluent or at the effluent based on the last 3 calendar years of operation;
(2)  for new municipal wastewater treatment works, the flow rate of wastewater that works are able to collect; (débit moyen annuel)
effluent” means wastewater discharged by a municipal wastewater treatment works, except the effluent that seeps through the ground and sewer overflows; (effluent)
industrial input” means the flow rates of the following effluents, calculated on the basis of the 3-month average where the flow rates are the highest and considering the average of total flow rates at the plant during those 3 months:
(1)  water from industrial processes, in particular process water from the following industrial sectors:
(a)  prospection or development of resources, such as mining, forest, petroleum or gas resources;
(b)  manufacturing industry;
(c)  processing industry, including food processing;
(d)  air or maritime transport, including cleaning operations of containers;
(2)  leachate from landfills;
(3)  the effluent from a site that processes sludge or residual materials;
(4)  discharges from hospitals and laboratories, excluding nursing stations; (apport industriel)
treatment plant” means a municipal wastewater treatment works used to process wastewater before being discharged into the environment, including associated works used to process sludge, waste and air, except if such works are of the “screen” type, classified according to the following categories:
(1)  “very small plant” means any plant with an average annual flow rate equal to or lower than 500 m3 per day and with an industrial input lower than 5% of its total flow rate;
(2)  “small plant” means any plant with an average annual flow rate greater than 500 m3 per day but equal to or lower than 2,500 m3 per day and with an industrial input lower than 5% of its total flow rate;
(3)  “medium plant” means any plant with an average annual flow rate greater than 2,500 m3 per day but equal to or lower than 17,500 m3 per day and any plant with a flow rate equal to or lower than 2,500 m3 per day and with an industrial input equal to or greater than 5% of its total flow rate;
(4)  “large plant” means any plant with an average annual flow rate greater than 17,500 m3 per day but equal to or lower than 50,000 m3 per day;
(5)  “very large plant” means any plant with an average annual flow rate greater than 50,000 m3 per day. (station d’épuration)
O.C. 1305-2013, s. 2; I.N. 2014-02-01.