2017-046 - Approving Addendum Nos. 1 and 2

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Santa Ana/Garden Grove Fixed Guideway Project Addendum #2 Physical Improvements: The modifications from 60% design would result in the following changes to Project features from 30% design: 1) Track shifted to the center of the PE ROW starting from 140 -ft east of Santa Ana River (SAR) Bridge to 5th Street at -grade crossing resulting in a slight track shift to the southern side of the PE ROW between 5th Street at -grade crossing and the Maintenance and Storage Facility (MSF), no private property is required. The Project footprint is not affected by this change. 2) Revised location of the TPSS unit. 4 formerly proposed at the north east corner of Santa Ana Blvd. and N. Garfield Ave. to the north side of the parking structure at SARTC, adjacent to N. Santiago Street. The Project footprint is not affected by this change. 3) Minor project footprint modifications and anticipated revised construction limits result from the process of advancement of 30% design to 60% design due to the following Project elements: a) Trenching in the public right-of-way (ROW) for drainage improvements and utility connections at West 5th Street, b) Paving, striping, signing, curb ramp and driveway approach improvements at N. Harbor Boulevard (Blvd.), N. Western Avenue (Ave.), N. Forest Street (St.), N. Pacific Ave., N. Hesperian St., N. Bristol St., N. Baker St., N. Spurgeon St., French St., N. Minter St., 4th St., E. Santa Ana Blvd., and Santiago St., c) Temporary Construction Easements (TCE) for a maintenance road turnaround on the east side of the SAR, d) Sidewalk paving re -construction at Nova Academy on the corner of Ross Street and 4th St., and e) Anticipated improvements at the driveway approach to the County of Orange Sherriffs Department Complex on W. Santa Ana Blvd. Operational Improvements: The modifications from 60% design would result in the following changes to the Project's operations from 30% design: 1) Reducing the maximum speed within the PE ROW from 45 miles per hour (mph) to 44 mph. 2) Implementation of Traffic Signal Priority (TSP) at all traffic signals along the route including at Main Street, Broadway, and Bristol Street. 4. ENVIRONMENTAL ANALYSIS OF DESIGN MODIFICATIONS To evaluate whetherthe proposed design modifications would result in a new significant impact, increase in the severity of an impact, or require new mitigation measures, OCTA undertook environmental review and where needed, conducted a technical analysis of each Project feature update. The following technical reports were prepared as part of this analysis and are included as attachments to this Addendum #2: • Visual Impact Analysis Re-evaluation Technical Memo Update, (HDR, February 2017) (Appendix A) • Cultural Resources Technical Memo Update (HDR, February 2017) (Appendix B) • Traffic Study Addendum v4 (IBI Group, February 2017) (Appendix C) • Noise and Vibration Technical Addendum (HDR, February 2017) (Appendix D) The technical analysis was coordinated with the 60% design work that was progressing on the Project. In some cases, specific design modifications were refined based upon analysis undertaken in the 60% design work. The CEQA Guidelines require that a brief explanation be provided to support the findings that no subsequent EIR or Negative Declaration is needed for further discretionary approval. A summary of findings from the re-evaluation of each of the environmental issue areas that were analyzed in the EIR are described below. 51 Page 1170726.1