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06/07/2004 BB. Cumulative (2020) Impact on Eastbound SR 84, Willow Road to University Avenue and University Avenue to the County Line Segments — PM Peak Hour Potential Impact: By 2020, assuming the addition of traffic generated by all other approved and pending projects in the vicinity, the Project is expected to increase traffic volumes by more than one percent of capacity on Eastbound SR 84, Willow Road to University Avenue and University to County Line segments, during the PM peak hour, a period during which traffic volume would already be expected to exceed capacity on these segments even absent the addition of Project - generated traffic (Impact 7 -27). Mitigation: The project applicant shall design and implement a comprehensive TDM program meeting the criteria set forth in Mitigation 7 -2 (Mitigation 7 -27). Findings: Mitigation 7 -27 is feasible and will help to partially mitigate Impact 7 -27. However, mitigation of this impact to a less- than - significant level would require the addition of another eastbound through lane to these freeway segments, which is not feasible because this freeway widening would require multiple approvals from multiple jurisdictions beyond the authority of the City and would require resources beyond the capacity of any individual development project or the City. Therefore, the cumulative impact described above is significant and unavoidable. V. BIOLOGICAL RESOURCES A. Steelhead and Chinook Salmon Potential Impact: The Project would fill approximately 10 acres of estuarine habitat for listed species of steelhead and Chinook salmon, and construction activity could cause increased water turbidity, contaminant release, noise and underwater shock waves within such habitat (Impact 8 -1). Mitigation: The Project would be required to obtain a Section 404 permit from the Army Corps of Engineers and a section 401 permit from the Regional Water Quality Control Board, and may be required to obtain a Streambed Alteration Agreement from the California Department of Fish and Game, and would be required to comply with all conditions of those permits /agreements (Mitigation 8 -5). The conditions would include a Habitat Mitigation and Monitoring Plan approved by all necessary agencies, and the HMMP would include a plan to replace or otherwise mitigate the loss of estuarine habitat. The HMMP would also include measures specified in Mitigation Measure 8 -1, concerning silt, turbidity, dust, dredging and pile driving. Findings: Obtaining of the specified permits and implementation of the HMMP would reduce the potential impact of loss of estuarine habitat and disturbance of habitat for protected steelhead and Chinook salmon species, otherwise potentially 1289 \02 \179278.2 20 Atty /Reso /Reso.1470 14590 060804 Muff # 304 Bin 26