25C - AGMT - OCWD CENTENNIAL PARK

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Section 4 4.3 Alternatives Under Further Review Through the alternative evaluation Centennial Park was selected as the preferred location based an the following reasons. Centennial Park is located very close to the deepest part of the local groundwater table depression, which means that injecting water at this location would have an immediate and significant benefit on raising the depressed groundwater levels. • Centennial Park is located in close proximity to OCWD MBI-1 Demonstration Well and data and observations from the well would be applicable and useful in the construction and operation of the monitoring wells at Centennial Park. Centennial Park is in close proximity to the existing GWRS pipeline existing turn-out. Alternative 1: (No Federal Action/No Project) Under NEPA a No Federal Action Alternative must be considered and under CEQA a No Project Alternative must also be considered. The No Federal Action/No Project Alternative provides the basis for comparison with other alternatives, as it represents a condition both current and future under which nothing would be done to address the identified need and objectives for the project. Ulnder the No Federal Action/No Project Alternative the project would not be implemented. Centennial Park and the Heritage Museurn would continue to operate as a community park and Cultural resource learning center. Alternative 2: Centennial! Park Four Injection WelilHeritage Park Monitoring Well (Proposed Project) Under the Proposed Project, four injections wells and associated water supply and back flush pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum. Under Alterative 2, an estimated 12 MGD of additional groundwater recharge capacity would be provided to replenish the Orange County Groundwater Bassin. The Proposed Project Plan is shown in Figure 3. Alternative 3: Centennial Park Three Injection Wells/Heritage Park Monitoring Well (Reduced Intensity Alternative) Under Alterative 3, three injections wells and associated water supply and back flush pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum, Under Alterative 3, an estimated 9 MGD of additional groundwater recharge capacity would be provided! to replenish the Orange County Groundwater Basin. The Alternative 3 Project Plan, is shown in Figure 7. Mid Basin Cen te' n nia' t ' P a 25C_R7 l roject Final EIR 42 J