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Section 5 <br />Redevelopment. Therefore, Alternative 3 would be considered a Non-Priority <br />Project and would need to prepare a Non-Priority Project Water Quality Plan <br />(NPP). The sarne measures and infiltration concepts proposed in the Mid Basin <br />Centennial Park Injection Well Project Non-Priority Water Quality Plan would <br />apply to Alternative 3. With the implementation of Mitigation Measure HWQ-2 <br />potential adverse long term storm water runoff management water quality <br />impacts would be reduced to a less than significant level. <br />Alternative 4: Pipeline Design Alternative <br />Under Alternative 4, the amount of excavation and grading activity would be <br />similar to the Proposed Project. Onsite construction activity under Alternative 4 <br />could generate degraded storm water runoff impacts. With the implementation of <br />Mitigation Measure GEO-1 potential degraded surface water runoff impacts <br />would be reduced to a less than significant level. <br />The amount of new and/or replaced impervious surfaces at the project site would <br />be similar to the Proposed Project and would require the preparation and <br />implementation of a Non-Priority Water Quality Plan. The same measures and <br />infiltration concepts proposed in the Mid Basin Centennial Park Injections Well <br />Project Water Quality Management Plan would apply to the Alternative 4, With <br />the implementation of Mitigation Measure HWQ-2 potential adverse long term <br />surface water runoff management water quality impacts would be reduced to a <br />less than significant level. <br />Mitigation Measures <br />CEO-1: Prior to the start of construction OCWD will obtain coverage under the <br />General Construction Permit by the State Water Quality Control Board and in <br />compliance with the permit will file a Notice of Intent with the State Water Quality <br />Control Board and prepare and implement a Storm Water Pollution Prevention <br />Plan. <br />HWQ-2: The final design of the Mid Basin Centennial Park Injection Well Project <br />will incorporate the storm water management program contained in the approved <br />Mid Basin Centennial Park Injection Well Project Non-Priority Water Quality Plan. <br />Level of Impact after Mitigation <br />Alternative 1: No adverse impact <br />Alternative 2: Less than significant with Mitigation Measure GEO-1 and HWQ-2. <br />Alternative 3: Less than significant with Mitigation Measure GEO-1 and HWQ-2. <br />Alternative 4: Less than significant with Mitigation Measure GEO-1 and HWQ-2. <br />Mid Basin Centennial Park Aeli Project Final EIR 5-131 <br />