So how can we clean out and freshen up the garage? Utah’s Division of Air Quality creates an inventory of pollutants from each of three main categories: transportation, industrial and homes.
Cars and other forms of transportation account for 57 percent of the particulate matter, 32 percent of it comes from homes (and small businesses and localized sources), and only 11 percent from major industrial sources, according to a report last year by the Utah Foundation.
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