1. City of Lethbridge, City Hall, 910 4th Avenue SouthLethbridge, Alberta T1J 0P6, Canada
2. Department of Civil and Environmental Engineering, 3-133 Markin/CNRL Natural Resources Engineering FacilityUniversity of Alberta, Edmonton, Alberta T6G 2W2, Canada
3. Department of Biological Sciences, CW 330 Biological Sciences BldgUniversity of Alberta, Edmonton, Alberta T6G 2E9, Canada