55B - RESO - EIR BRISTOL ST WIDENING

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ENVIRONMENTAL IMPACT REPORTADDENDUM Street Widening Phase 1118 — Washington Avenue to 17`h Street During construction, the disruption of traffic and access along Bristol Street between Washington Avenue and 1761 Street would temporarily affect the mobility of emergency vehicles. However, provisions would be made for interim access through the Project corridor and to adjoining properties; traffic control plans would be prepared detailing provisions for vehicular movement and access through the Project corridor during construction. Advance warning and information signs would be used to inform motorists during the construction process. It is expected that two -way travel would be maintained along Bristol Street during construction. Although the proposed Project may interfere with an emergency evacuation plan, it would be short term during construction and mobility would improve once the Project is completed. Compliance with mitigation measures from the 1990 FEIS /EIR would ensure that impacts are not greater than previously analyzed in the 1990 FEIS /EIR. Mitigation Measures No new additional mitigation measures are required. h.) Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands? The proposed Project is located in a highly urbanized area of the City of Santa Ana. There are no wildlands in the Project vicinity and no new significant impacts would result with Project implementation. Mitigation Measures No new additional mitigation measures are required. 3.9 Hydrology and Water Quality This section corresponds with Section IV - Environmental Consequences and Mitigation Measures, Subsections C - Erosion Impacts, D - Floodplain /Floodway Encroachment, and F - Water Quality of the 1990 FEIS /EIR. a.) Violate any water quality standards or waste discharge requirements? Under Section 402 of the Clean Water Act (CWA), the EPA has established regulations under the NPDES program to control direct storm water discharges. The proposed Project would be required to comply with the NPDES program for the Santa Ana Regional Water Quality Control Board. Construction Activities Grading and excavation and use of hazardous materials during Project- related construction activities would create potential sources of polluted discharge. The construction contractor is required to conform to the requirements of the General Permit for Discharges of Storm Water Associated with Construction Activity. Pursuant to the CWA, in 2009 the State Water Quality Control Board issued a statewide General ANA 111 -334 (PER- 02 -01) CITY OF SANTA ANA (11/25/2013 REV2) 132897 CM PAGE 37 55B -44