9 CASE STUDY – WWTP Lift Station – (Canada) • City of Sarnia in SW Ontario builds a new WWTP lift station (wet well) in established residential neighbourhood • Up to 30ppm hydrogen sulfide (H2S), a colorless, harmful and toxic gas (smells like "rotten eggs“) escapes as residential odor complaints mount • Stacks, carbon filtration, liquid scrubbers technologies &/or chemical odor abatement supplies prove to be too expensive nor sustainable in the long term • Complaints end once Odorox® is installed with next to no start-up costs while operating with very low energy consumption needs and low maintenance costs Green Technology at Work ® Copyright © 2015 HGI Industries Inc., All rights reserved

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