Over the past two years the Gabriola Island Clean Air Society has worked with community groups and individuals to setup more than 50 low-cost, realtime air quality monitors in BC. These devices m ade by PurpleAir have created a more nuanced and detailed picture of our air sheds, and also have provided much needed empirical evidence to support the claim that wood burning from a variety of sources creates local pollution hot spots that are not being detected by provincial air quality monitoring. The accuracy of these instruments has been questioned by some, in part, because people are often uncomfortable with the results. Residential wood burning including the use of fireplaces, wood stoves, bon fires, and yard clearing exposes people who live nearby to air pollution risks that are hyper local, and as high (but on an ongoing albeit episodic basis) as forest fire smoke. The forest fires unfolding in the interior of British Columbia this past week provide some important glimpses in
The following commentary is from Gabriola Island Clean Air Society director Dr. Michael Mehta. Dr. Mehta is a Professor of Geography and Environmental Studies at Thompson Rivers University and an expert on health and environmental risk issues. In cities like Beijing, when a "red alert" day is called due to high air pollution levels, many restrictions come into effect including a shutdown of industrial operations that may exacerbate the problem. With the extremely high pollution levels in Kamloops over the past month, the following questions arise: To what extent do current industrial operations like those engaged in by the Domtar Pulp Mill contribute to these high levels, and do their operations makes thing worse d uring emergency situations like this? This is a very difficult question to answer completely, and without full access to provincial air quality data I can only make some inferences and educated guesses. Here's what I have seen, and this suggests that
We have a very serious wood smoke problem here on Gabriola Island, and there is no doubt that almost 100% of the problem is due to individuals burning wood at home for residential heating. Here's a snapshot from 10:30AM on October 10, 2016, of a new sensor in the Pat Burns area. This level of particulate matter exposure is very hazardous. Note the other readings in the region, especially the sensor only 400m away (as the crow flies) with a reading of 7 at the same time.
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