Actions pertaining to the Fresno Sanitary Landfill located at 1707 West Jensen Ave (Council District 3): 1. Approve the Sixth Amendment to the Consultant Services Agreement with CDM Smith, Inc., of Concord, California, in the amount of $575,800.00, to increase the total not to exceed contract amount to $2,876,491.00, and to extend the term of the Consultant Services Agreement to January 31, 2027, for the Groundwater and Landfill Remediation Services; 2. Approve the Third Amendment to the Consultant Services Agreement with Tetra Tech BAS, Inc., of Diamond Bar, California, in the amount of $100,400.00, to increase the total not to exceed contract amount to $879,511.00, and to extend the term of the Consultant Services Agreement to January 31, 2027, for the Landfill Gas Collection and Control System and Operations, Maintenance, and Monitoring Services at the City of Fresno Sanitary Landfill; 3. Authorize the Director of Public Utilities, or designee, to sign the Third and Sixth Amendments on behalf of the City of Fresno (City).