Approval to renew BL057-16, purchase of crushed stone on an annual contract (July 19, 2019 through July 18, 2020), Departments of Community Services, Transportation and Water Resources, with Hanson Aggregates Southeast, LLC; Martin Marietta Materials, Inc.; Metro Green Recycling, LLC; and Vulcan Materials Company, LP, base bid $475,000.00. (Staff Recommendation: Approval)