Item 14 - Award of a Construction Contract for Bristol St and Memory Lane Intersection

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ENVIRONMENTAL IMPACT REPORT ADDENDUM Bristol Street and Memory Lane Intersection Improvements — Project No. 17-E883 to Substantially alter the exisMW drainage pattern of the site or area bw a ft borough the alteration. of doe course of a stream or river, or substantially increase the rate or amouni of surface rungjyIn a manner that would result in,)'looding on- or off -site? Currently, the Project site only includes curb and no catch basin is present. As a result, seasonal ponding does occur along this portion of Bristol Street The proposed Project would result in a nominal increase in impervious ground surfaces. However, development of the Project would result in the relocation of the existing curb features at the Project site. Thus, implementation of the proposed Projectwould not result in a substantial increase compared to the existing condition. Further, Project development -may include extension of the existing storm water pipeline system (located on the eastern side of Bristol Street) through a new lateral connection and new catch basin at the Project site. These improvements, if constructed, would result in a reduction of existing flooding and would be a beneficial impact. Thus, impacts would not be greater than previously analyzed in the 1990 FEIS/EIR. Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEISMIR mitigation measures are applicable Mitigation Measures: No additional mitigation measures are requited. e) Greate or conbibute runoff water which would exceed the capacity of existing or planned storm water drainage systems or provide substantial additional sources o f pollrated runq,o"? Refer to Response 3.9(a). Impacts would not be greater than previously analyzed in the 1990 FEIS/EIR. Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEIS/EIR mitigation measures are applicable. Mitigation Measures: No additional mitigation measures are required. f) Otherwise subsiandally degrade water quality? Refer to Response 3.9(a). Impacts would not be greater than previously analyzed in the 1990 FEIS/EIR Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEISMIR mitigation measures are applicable. Mitigation Measures: No additional mitigation measures are required. 9) Place housing wWdn a 1 bO-yearflood hazard area as mapped on afederal Flood Hazard Boundary or Flood Insurance Date Map or other flood hazard delineation map? The Project site is located outside of the 100 year flood zone.14 Further, the proposed Project would not construct any housing. Therefore, no impact would result from the proposed Project in this regard. Impacts would not be greater than previously analyzed in the 1990 FEIS/EIR. Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEIS/EIR mitigation measures are applicable: Mitigation Measures: No additional mitigation measures are required. h) 17we within a 100yearflood hazard areas&uetures which would impede or redireetflood flows? Refer to Response 3.9(g). Impacts would not be greater than previously analyzed in the 1990 FEIS/EIR. Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEISMIR mitigation measures are applicable Mitigation Measures: No additional mitigation measures are required. to Federal Emergency Management Agency, FEMA Flood Map ,Service Center, https://msc.fema.gov/portal/search? AddressQuery=memory%2alane%2C%26santa%2Oana#lsearchresultsanchor, accessed August 3,2017. Final I December 2017 3-18 Environmental Consequences