2014-069 - Final Environmental Impact Report No. 2014-01

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Harbor Boulevard Mixed Use Transit Corridor Plan Findings and Facts in Support of Findings and Statement of Overriding Considerations (4) Potential Impact: Development of projects pursuant to the Harbor Corridor Plan would place people and structures in a 100 -year flood zone. Finding: 1. The City hereby makes Finding 1 and determines that this impact is less than significant with the incorporation of the proposed mitigation measures. Facts in Support of Finding Much of the northern half of the project area is a 100 -year flood zone. However, multiple flood control improvements have been completed, are under construction, or are planned, as part of the Santa Ana River Mainstem Project (SARMP). At completion of the SARMP, 100 -year flood zones for flooding from the Santa Ana River are expected to be substantially smaller than they are at present, including the project area. Furthermore, hydrology studies for individual development projects that would be accommodated by the Harbor Corridor Plan would be required; the studies would have to include estimates of 100 -year flood depth on each respective site from the Federal Emergency Management Agency (FEMA). Alternatively, individual development projects could request a Letter of Map Correction from FEMA if the respective project applicants provide substantial evidence that the lowest adjacent grade elevation is already above the 100 -year flood elevation at that site. Implementation of Mitigation Measure 7 -1 requires that project applicants comply with FEMA requirements regarding flood zones and requires that evidence of this compliance be supplied to the City. Upon compliance with regulatory requirements, and Mitigation Measures 7 -1 and 7 -6, this impact would be less than significant. Mitigation Measures Mitigation Measure 7 -1 applies to this impact. MM 7 -6 Prior to the issuance of precise grading permit for any lot or parcel wholly or partially located within the 100 -year floodplain, the applicant shall furnish to the City Engineer documentation required by FEMA for approval of the Conditional Letter of Map Revision /Letter of Map Revision (CLOMR /LOMR) process for revision to the FIRM and Flood Insurance Study (FIS). The applicant shall pay all preliminary and subsequent fees as required by FEMA. E. NOISE (1) Potential Impact: Noise levels at proposed residential areas would be above the 45 dBA community noise equivalent level (CNEL) interior and 65 dBA CNEL exterior noise standards. Finding: 1. The City hereby makes Finding 1 and determines that this impact is less than significant with the incorporation of the proposed mitigation measure. 33 July 2014