Task 1 – Exploratory Wells Task Description: 2 exploratory wells would be drilled at the 2 preferred sites identified in the 2021 study. Test Well Site 1 would be in undeveloped right-of-way owned by Silverton near the industrial park area. Test Well Site 2 would be on an undeveloped portion of City property that is used for a senior center, skate park, and dog park. Both wells would be drilled to a depth to reach the Columbia River Basalt Group Aquifer, as recommended by the 2021 initial feasibility evaluation. Pump testing, water level measurements, and water quality testing would be completed on both test wells that will help the City determine the following information about the site: 1) All regulatory permitting to be done by the Engineering Design services. 2) The potential storage volumes of the aquifer at the site. The 2021 evaluation estimated a range of 61 – 133 million gallons over a 140 day period in the winter. 3) The recovery rate, how much water could be pumped from the well every day, for an ASR well at the site. The 2021 evaluation results were based on the assumption that the City could achieve a recovery rate of 1 million gallons per day. 4) The sizing of the well and pumps needed for the ASR well to be a viable option for the City. 5) Water quality testing of the existing groundwater would be completed to determine the compatibility of the groundwater with the finished water from the Silverton Water System. This will help determine if any additional treatment would be needed at the ASR site. Task 2 – ASR Preliminary Design Report Task Description: Once all testing has been completed the consultant would analyze the results to determine the best site for an ASR well and then complete a preliminary design of the infrastructure including identifying any upgrades in the distribution system that are needed to send water from the existing water treatment plant to the ASR site. The completed study would provide information so the City could decide whether ASR was an appropriate project for the City and what the cost would be to design and construct the project.