Moore, of Pompano Beach, was fired by the county in August 2018, but later allowed to resign after his union objected to the procedures the county used in the firing. County auditors said Moore in a year’s time had made more than $18,000 in questionable purchases, including 11 faucets, 11 backflow-preventer repair kits and 108 feet of red brass pipe that could not be accounted for.