11.03.21 Regular Meeting - Laserfiche WebLink

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City Council Meeting Minutes November 3, 2021 She stated the project has been through an extensive environmental review that includes, extensive categorical analysis on environment, SocioEconomic, and Archeologic impacts that have been conducted by Environmental Experts and the process has been in a three level review through consultant, City Staff and HUD. Ms. Thomas mentioned the importance of the environmental review is to determine compliance with the National Environmental Policy Act (NEPA) and related laws and authorities. It proves no significant impact to the environment and/or establishes necessary mitigation and monitoring activities that provides the City the ability to use grant funds. Ms. Thomas stated the project is located at Highway 80 and River Road between San Marcos and Blanco River. The project components include a concrete flood wall and turns into a earthen berm, then back to flood wall and berm again. She stated the purpose of the earthen berm is to protect the neighborhood and the San Marcos Water Treatment Plant from overflows of the Blanco River. She mentioned the concrete flood wall and berm will contain the flow in a directed route and direct it to a relief channel that is being constructed. Ms. Thomas stated the Blanco Gardens depth is up to 3+ feet with flooding of property and structures during peak inundation in a 100 -year flood event. She mentioned when the project is completed, the peak inundation depth will be up to 1.25 feet with containment primarily within right -a -way during a 100 -year flood event. Ms. Thomas stated the water would receed quicker with the infrastructure of the relief channel, berm and the flood wall. Ms. Thomas stated a third party was hired to review the modeling approach that layered in additional support and technical expertise. There was no significant changes to the modeling approach and third party verified the design team and City's modeling is technically a sound assessment and no recommended changes are needed. There are no negative impacts upstream or downstream. Ms. Thomas provided the project schedule: • Bidding: o Solicitation — March 2022 o Council Award and Contract Execution — June 2022 • Construction: o Notice to Proceed — June 2022 o Anticipated Project Completion — April 2024 • Closeout: City of San Marcos Page 4