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Section 3 <br />Comment Letter C <br />Orange County Public Works <br />March 18, 2016 <br />Comment C -1 <br />The submitted comment requests that the Orange County Water District (OCWD) <br />consult with the Orange County Public Works Environmental Resources to obtain <br />recommendations on water quality issues associated with the back flushing of water <br />from the injection wells into the Greenville- Banning Channel. <br />Response C4 <br />Page 5 -132 of the Draft Environmental Impact Report identifies Mitigation Measure <br />HWO -1, which requires that OCWD obtain an encroachment permit from the County of <br />Orange to allow the discharging of back flushed wafter from the injection wells into the <br />Greenville- Banning Channel. As part of the coordination for the encroachment permit <br />OCWD would coordinate with Orange County Public Works Environmental Resources <br />on water quality issues associated with the back flushing of water from the injection <br />wells into the Greenville- Banning Channel. <br />Comment C -2 <br />The submitted comment identifies that based upon personal communication with <br />OCWD it was identified that an incorrect amount of water (70,000 gallons per minute) <br />was referenced in the Draft EIR, as the amount of water that would be periodically <br />discharged from the injection wells. <br />The submitted comment is correct. The amount of water that would be discharged <br />would be 3,500 gallons per minute per well. This amount is substantially lower and <br />would not increase flood capacity impacts or potential flood risks within the Greenville - <br />Banning Flood Control Channel, <br />Comment C -3 <br />The submitted comment identifies that the section headings 5.7.3 Thresholds of <br />Significance and 5.7,4 Project Impacts are mislabeled and should be referenced as <br />section headings 5.8.3 Thresholds of Significance and 5.8.4 Project Impacts. <br />Response C -3 <br />The comment is correct. The headings were inadvertently mislabeled. As shown in <br />Section'2.0, the Final EIR has been revised to reflect the correct section headings. <br />Section 5.7.3 Thresholds of Significance has been clarified and revised to read as <br />follows; <br />OCWD Mid Basin Centennial Park Injection Well Project Draft EIR <br />Response to Comments /Mitigation Monitoring Program 3 -6 <br />25C -396 <br />