Slide 11 of 31
Notes:
During a similar time period, Ray Hoff from environment Canada, AES had also noted high Arsenic concentrations at several southern Ontario sites. Ray used the ratio of Arsenic (emitted by both Coal combustion and Smelters) to Selenium (emitted in much higher quantities by Coal burning) to focus on the Smelter influences. His back trajectories (calculated by the AES Trajectory model) tend to implicate Sudbury rather than Noranda for these high arsenic events. Hum?
