Approve amendment 3 to contracts with Advanced Earth Sciences, Inc. ($250,000; cumulative total $3,750,000), Geosyntec Consultants, Inc. ($650,000; cumulative total $3,650,000), and SWT Engineering, Inc. ($850,000; cumulative total $4,350,000); approve amendment 2 to contract with GeoLogic Associates, Inc.; approve amendment 4 to contract with Tetra Tech BAS, Inc., ($950,000, cumulative total $4,650,000), for Architect-Engineer Task Order Contracts for landfill services, 7/10/26 - 1/31/27; and authorize Director or designee to make minor changes and execute amendments under certain conditions