Sulphur Dioxide > What are the levels? posted on 9:49 AM, June 7, 2016
The highest observed concentration of SO2 in Kamloops in a one-hour period in 2015 was 10 ppb (source: BC Lung Association). Guidelines for SO2 from provincial air quality objectives are 75 ppb, observed as the annual 99th percentile of daily one-hour maximum observed. |