Appendix A Water Quality Memo - Laserfiche WebLink

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1 MEMORANDUM DATE: September 16, 2019 TO: Brian Liu, Associate Environmental Planner, California Department of Transportation, District 12 FROM: Nicole West, Associate Environmental Planner, LSA SUBJECT: Water Quality Memorandum: Fairview Street Improvements from 9th Street to 16th Street and Bridge Replacement Project BRLS 5063(184) 1.0 PROJECT DESCRIPTION The City of Santa Ana, in conjunction with Caltrans District 12, proposes to widen Fairview Street between 9th Street and 16th Street, including replacing the Fairview Street bridge crossing over the Santa Ana River (proposed Project) in Santa Ana, California. The purpose of the Project is to reduce congestion and improve pedestrian and bicyclist safety on Fairview Street between 9th Street and 16th Street, consistent with the Orange County Master Plan of Arterial Highways and the City’s General Plan Circulation Element. South of 9th Street, Fairview Street provides three lanes in each direction which are reduced to two lanes in each direction north of 9th Street, across the existing four-lane bridge, to 16th Street. The Fairview Street segment between 9th Street and 16th Street is the only constraint for Fairview Street to be built out to its planned width of six lanes. This condition causes a traffic “bottleneck” during peak hours. In addition, there are no sidewalks, bikeways, or lighting on the existing bridge. Pedestrians and bicyclists currently use the roadway shoulder to cross the bridge. The Santa Ana River Trail (SART) runs on both sides of the Santa Ana River in the Project area. The SART is a Section 4(f) Resource and would be temporarily closed during construction of the proposed Project. The proposed Project includes widening Fairview Street between 9th Street and 16th Street, including replacing the Fairview Street bridge over the Santa Ana River. The proposed Project would widen Fairview Street from two lanes in each direction to three lanes in each direction in the City of Santa Ana (refer to Figures 1 and 2; all figures are provided in Attachment A). Fairview Street bridge would be replaced with a new six-lane bridge (three lanes in each direction), including a complete bridge deck with barrier rails, sidewalks, bicycle lanes, a raised median, and lighting. The proposed bridge would be expanded from approximately 52 feet (ft) to 100 ft in width, and would have the same roadway profile as the existing bridge. The eight pier walls that support the existing bridge would be removed, and four new pier walls would be constructed to support the new bridge. The proposed Project would acquire partial right-of-way take from three parcels (two commercial parcels [Assessor’s Parcel Numbers (APN) 405-213-02 and 405-213-01] and one single-family residence [APN 405-213-14]) as shown in Figure 2.