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Al Hartmann | Tribune file photo After four terms (16 years) Dan Snarr with his signature handlebar mustache is leaving his post Rick Egan | Tribune file photo Bre Welch (left) and Amy Keeler (right) sing to Sandy Mayor Tom Dolan during the groundbreaking Al Hartmann | Tribune file photo After four terms (16 years) Dan Snarr with his signature handlebar mustache is leaving his pos Leah Hogsten | Tribune file photo Sandy Mayor Tom Dolan, April 22, 2008.