PUR-4 17-0182 Motion to Approve Contract for Purchase of Hauling and Disposal of Wastewater Treatment Grits, Rags, and Solids - Waste Pro of Florida, Inc. - $486,900 (three-year total) and Contract for Purchase of Hauling and Disposal of Wastewater Treatment Sludge - Merrell Bros, Inc. - $5,823,675 (three-year total)