Skip booklet index and go to page content

Appendix E: Effluent Quality Data for Mines in 2013 (Part 2)

Note to the Reader

The tables in Appendix E show summarized monthly data for each final discharge point for each mine which was subject to the Metal Mining Effluent Regulations (MMER) in 2013. Identifying information includes:

There is one page per final discharge point showing the monthly mean data reported by the mine owner or operator to Environment Canada as per section 22 of the Regulations. The tables are sorted in alphabetical order based on mine/mill name.

Each row in the tables represents a parameter for which testing is required under the MMER and the numbers shown in the table are the averages of all of the reported data for each month, for each parameter. The limits for each parameter are also shown, in the second data column in the table. Parameters which exceeded the regulatory limits are highlighted in the tables for ease of identification.

Results of testing for acute lethality in rainbow trout (as per section 14 of the Regulations) and for Daphnia Magna monitoring (section 17 of the Regulations) are shown in the 4 rows near the bottom of the tables. A “pass” for the rainbow trout acute lethality test and the Daphnia magna monitoring test indicates that the percentage of mortality was less than or equal to 50%. A “Fail” indicates that the percentage of mortality was greater than 50%.

The additional notations used in the tables are explained at the bottom of each page, including “ND” for No Deposit and “NMR” for No Measurement Required. “No Deposit (ND)” is used in the case where there is no effluent flow from a final discharge point in a given month. “No Measurement Required (NMR)” indicates that the mine has met the requirements of Paragraphs 13(1) and 13(2) of the MMER which allow the mine to conduct the testing of effluent on a quarterly basis (versus weekly, as is otherwise required) and therefore was not required to report on the given parameter in that month.

Summary Review of Performance of Metal Mines Subject to the Metal Mining Effluent Regulations in 2013

Date modified: