Metal and Diamond Mining Effluent Regulations

19.1 (1) With respect to deleterious substances contained in effluent deposited from each final discharge point, the owner or operator of a mine shall, for each month during which there was a deposit, record the monthly mean concentration

• (a) in mg/L for deleterious substances referred to in items 1 to 7, in column 1, of Schedule 4; or

• (b) in Bq/L for a deleterious substance referred to in item 8, in column 1, of that Schedule.

(2) If the analytical result from any test conducted under section 12 or 13 is less than the method detection limit used for that test, the test result shall be considered to be equal to one half of the detection limit used for the purpose of calculating the monthly mean concentration.