2017-046 - Approving Addendum Nos. 1 and 2

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OCTA I Santa Ana/Garden Grove Fixed Guideway Project FNNoise and Vibration Technical Analysis Re-evaluation in Support of Minor Design Modifications LPA in Certified EA/EIR — January 2015 30% Design — May 2016 (5) In a parking structure at 5`" and Main, Facility (MSF) site, and (3) On north side of Santa Ava Blvd east (6) On south side of Santa Ana Blvd at of Parton St., and Garfield St. (4) On north side of Santa Ana Blvd and N. Garfield St. Locations 1 and 2 are within the ROW previously cleared. Locations 3 and 4 are identified within the updated APE. Appendix P to the EIR, the Drainage Modification of scope of drainage Technical Report, indicate storm drain improvements to rely less on connections to improvements on many streets outside the storm drain network and use surface project alignment. conveyance in streets to maintain existing drainage patterns to the maximum extent practicable while addressing surface storm water drainage needs generated by the Project or change in drainage patterns caused solely by the Project. Single contact wire in the PE ROW. Two -wire catenary in the PE ROW. No provision for underground fiber optics Underground fiber optics cable cable (communications) from SARTC to OCTA Garden Grove Bus Annex north of PE ROW, approximately 1500 feet west of Harbor Blvd. The Project footprint and Area of Potential Effect (APE) for Cultural Resources study were also updated to encompass the modifications as well as the anticipated revised construction limits of the Project. Physical Improvements: The design modifications would result in the following changes to the physical improvements described in the LPA: • Concrete Box Girder bridge instead of a Tied -Arch bridge at Westminster Avenue; • A double track bridge instead of a single track bridge across the Santa Ana River (SAR). The position of the bridge would be north instead of south of the existing historic bridge location. • Repositioning the double track alignment, shifting the railroad centerline within the former Pacific Electric right-of-way (PE ROW) from the middle to the north at the approaches to the SAR crossing; • Addition of a bridge span on the west bank of the SAR, behind a existing levee to accommodate an undercrossing for the SAR Trail and Bikeway (and Orange County Flood Control District (OCFCD) maintenance road. The profile of the trail and maintenance road would be modified at the crossing to facilitate the grade separation; • Deletion of Willowick Station Stop. This station stop is associated with future development. At this time there is no development that is accessible to this station stop; • Repositioning of Station Stop side platforms to center platforms at Harbor Boulevard, Fairview Street (both west side), and Raitt Street in the PE ROW segment of the Project alignment; 19