1. Agriculture and Agri‐Food Canada Research Centre 107 Science Place Saskatoon SK S7N 0X2 Canada
2. Toxicology Graduate Program Univ. of Saskatchewan Saskatoon SK S7N 5B3 Canada
3. Current address Health Canada 269 Laurier Ave. West Ottawa ON K1A 0K9 Canada
4. Environment and Climate Change Canada National Hydrology Research Centre Saskatoon SK S7N 3H5 Canada
5. Environment and Climate Change Canada National Hydrology Research Centre 11 Innovation Blvd. Saskatoon SK S7N 3H5 Canada