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Aquifer Storage and Recovery (ASR) Feasibility Assessment — Phase 1. RPS will conduct <br />a preliminary assessment of the feasibility of Aquifer Storage and Recovery (ASR) for <br />reclaimed water using a brackish water aquifer accessed from the 97 -ac. tract adjacent to <br />the San Marcos WWTP. The purpose of the preliminary assessment is to develop <br />aquifer information that will advance to groundwater availability model (GAIN)) and <br />preliminary drilling to collect site - specific data from which an actual engineering analysis <br />can be completed. The scope of the Phase 1 assessment can be summarized as: <br />1. Determine aquifer characteristics <br />a. Literature review. <br />b. Data collection. <br />c. Assessment of aquifer hydraulic properties. <br />2. Aquifer storage modeling (assumes use of existing USGS model of saline <br />Edwards) <br />3. Preliminary opinion of project cost. <br />4. Evaluation of regulatory and permitting issues. <br />5. Documentation of results in a technical memorandum. <br />Reclaimed Water Pumping Evaluation. Using the City's records of modifications to the <br />reclaimed water pumps, RPS will perform pump tests to evaluate the head range of the <br />existing pumps. <br />Environmental Information Document (EID): An EID is required as a condition of <br />funding through the CWSRF. The EID is developed as a separate, self - contained <br />document that describes the project in sufficient detail so that reference to the CWSRF <br />engineering documents will not be necessary, except for detailed design data. Work <br />includes a constraints level analysis of natural and cultural resources subject to regulation <br />and management overview by federal and state agencies. The EID will be developed in <br />accordance with the current CWSRF guidelines and submitted for federal and state <br />agency review in draft form. Review comments will be addressed in the final EID <br />submitted to TWDB for approval. <br />Pipeline alignment topography and design survey. <br />• The design survey will use the City GIS ROW layer as the boundary lines. <br />• Topographic survey, based on NAVD 88, with reference to City benchmarks and <br />development of one -foot interval contours. <br />o Vertical control established at an accuracy of 0.01 feet. <br />N <br />