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Section 5 <br />Alternative 4: Pipeline Design Alternative <br />Under Alternative 4 the same configuration of the four injection wells and <br />monitoring well would occur. The noise levels generated from the construction <br />and operation of the 'Injection wells and monitoring Would essentially be the same <br />as the Proposed Project. Under Alternative 4, an alternative alignment for the <br />water supply pipeline would be constructed that would extend near Santa Ana <br />College Centennial Education Center and through two existing hall fields to MBI <br />Well Site 2, Construction noise impacts would be similar to the Proposed <br />Project. Potential construction noise impacts would be less than significant. <br />Under Alternative 4 the well redevelopment activities and associated noise <br />impacts would be the same as the Proposed Project. The well redevelopment <br />activities would occur during the day when the construction activity would be <br />exempt under the City's Noise Ordinance. To minimize noise impacts the project <br />has incorporated a design feature that would require the well redevelopment <br />activities to occur when school is not In session. Potential noise impacts would <br />be less than significant. <br />IMPACT N-1: Would the project expose persons to or generation of noise <br />levels in excess of standards established in the local general plan or noise <br />ordinance, or applicable standards of other agencies? <br />Alternative 1: No Federal Action/No Project <br />Under Alternative 1, the project would not be implemented. There would not be <br />any construction related or operation, noise impacts occurring within the project <br />area. The project area would continue to experience elevated levels of noise that <br />would be in excess of the City Noise ordinance standards. <br />Alternative 2: Proposed Project <br />Under the Proposed Project, the four proposed injection wells and monitoring <br />well would be located within underground Vaults. The operation of the injection <br />wells and monitoring well would not emit any long term operation noise that <br />would be in excess of City of Santa Ana noise standards. The construction <br />operations for the Proposed Project would temporary increase noise levels within <br />the project area and at land uses surrounding Centennial Park and the Heritage <br />Museum. As shown in the noise analysis, with the incorporation of the sound <br />walls and construction design features and compliance with the City's Noise <br />Ordinance, construction related noise impacts generated from the Proposed <br />Project would not expose sensitive receptors to noise levels in excess of City of <br />Santa Ana noise standards. <br />Mid Basin Centennial Park Project Final EIR 5-210 <br />