3 CASE STUDY – Lallemand Bio-ingredients (Tara, Ontario) • In Spring 2014, Quebec based Lallemand Inc. bought an existing powder ingredient facility in Tara, Ontario and soon begun production • Lallemand Bio-Ingredients specializes in inactive yeast and yeast extract. Specifically, the drying process of mineral enriched yeast is very odorous & much heavier than air. When mixed with water it smells like horseradish and rotten eggs • By late 2014 after numerous odor complaints from the town’s residents and under the eye of MOECC, the plant stopped production until the odor problem(s) could be solved • After enclosing the waste water basin (the major odor source), Sodium Selenite (Na2SeO3) odors were destroyed by injection of ODOROX® atmospheric hydroxyl t

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