Res 2024-128 approving an agreement with Plummer Associates, Inc., to provide on-call professional services for the Sunset Acres Subdivision drainage and associated improvements in the estimated amount of $3,000,000.00

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Docusign Envelope ID:21C696F2-FD37-4E21-94A2-C2BE6A22794A Exhibit 1 Scope of Work On-Call Design, Bidding, and Construction Phase Services for Sunset Acres Subdivision Sunset Acres Revised Final Design Project Background During the design phase of the Sunset Acres Improvements Project("the Project," as described in City of San Marcos Contract#218-394 and its Changes in Service#1—#6), Plummer Associates, Inc. ("Plummer") and the City of San Marcos ("City") determined that the improvements needed to be phased as follows: 1. Phase 1: Wastewater Improvements 2. Phase 2: Detention Pond Improvements 3. Phase 3: Neighborhood Improvements, Phase 1 4. Phase 4: Neighborhood Improvements, Phase 2 In April 2024,the City received notification that it is the recipient of a United States Department of Transportation ("USDOT") grant that will allow the City to combine Phases 3 and 4 into a single phase (henceforth to be referred to as "Phase 3"), to be bid and constructed as a single project.The funding for this Phase will be administered by the USDOT, requiring coordination with USDOT and environmental permitting per USDOT standards. Phase 2 will be bid and constructed as a single project separate from Phase 3; it will not rely on USDOT funding and thus will not require USDOT coordination or environmental permitting. (Phase 1 is under construction and will not be included in this contract, except for the Phase 1 As-Built GPS Data survey described in Task Order 1.) To facilitate Plummer's work in Phases 2 and 3 above, the City asked Plummer to prepare this Task Order Contract to address the design, bidding, and construction of those phases, as well as the environmental permitting and USDOT coordination required for Phase 3. Because this is a Task Order Contract, the City shall authorize each task order as necessary to complete that portion of the work towards the overall Project.The Scope identified in the following paragraphs is based on the current understanding of the project needs; it may need to be adjusted prior to issuance of individual Task Orders to accommodate future changes in site conditions and City needs. Correspondingly, all fees shown are estimates;final fees will be determined at the time of task order issuance. Project Summary Proposed Improvements Proposed improvements were originally detailed in the July 2019 Preliminary Engineering Report (PER) on Sunset Acres Storm Drain improvements submitted by Plummer to the City, as well described in Contract#218-394 and its Changes in Service#1—#6. A summary of the improvements is as follows: Page 1 of 22 Documentl