Q-2, r. 19 - Regulation respecting the landfilling and incineration of residual materials

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69. The leachate or water samples taken pursuant to this Regulation must not be filtered in any manner during sampling or prior to analysis.
The groundwater samples taken for analysis of metals and metalloids may be filtered during sampling as long as they are filtered at all sampling points.
O.C. 451-2005, s. 69.