2017-046 - Approving Addendum Nos. 1 and 2

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0� OCTA I Santa Ana/Garden Grove Fixed Guideway Project Noise and Vibration Technical Analysis Re-evaluation in Support of Minor Design Modifications • Repositioning Station Stop westbound platform at Ross Street from farside to nearside, and Station Stop platforms at Broadway and Main consolidated and moved to farside Sycamore Street; • Placement of single crossovers on both sides of the Maintenance and Storage Facility (MSF) with a revised layout for the MSF, added crossovers on both sides of downtown couplet, and replaced the tail track beyond the SARTC platform with a double crossover before the SARTC platform; • Restriping Santa Ana Boulevard from Flower Street to Raitt Street from a four -lane to a two-lane street with a raised 4 -ft median; • Restriping westbound Santa Ana Boulevard from French Street to Flower Street from three -lanes to two -lanes and a protected bike lane on the north side of the street; • Relocation of the traction power substations (TPSS) to the PE ROW and publically owned properties and reducing the number of TPSS from six to four; • Re-evaluation of the scope of drainage improvements to mitigate additional surface storm water drainage needs generated by the Project, or change in drainage patterns caused solely by the Project; • Changing from single contact wire in the PE ROW to a two -wire catenary to enhance operations at higher speed; and • Consideration of underground fiber optic lines from SARTC to the OCTA Garden Grove Bus Annex north of the PE ROW, about 1500 feet west of Harbor Blvd. Operational Improvements: Two changes to the Project's operations are proposed as part of the modifications: • Increasing the maximum speed within the PE ROW from 35 miles per hour (mph) to 45 mph. The increased speed reduces travel time, providing operational cost and ridership benefits; and, • Implementation of traffic signal priority at all traffic signals along the route except for Main Street, Broadway, and Bristol Street. 20