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 Addendum PHYSICAL IMPROVEMENTS The additional design modifications from 60% design would result in the following changes to proposed physical improvements from 30% design: • Track shifted to the center of the PE ROW starting from 140 -feet 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 51 Street at -grade crossing and the MSF. No private property is required and the shift occurs within the existing APE. • Revised location of the traction power substation (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 Santa Ana Regional Transportation Center (SARTC), adjacent to N. Santiago Street Project footprint modifications and anticipated revised construction limits are also proposed in the advancement of 30% design to 60% design. These include: • Trenching in the public right-of-way (ROW) for drainage improvements and utility connections at West 51 Street; • 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., 41 St., E. Santa Ana Blvd., and Santiago St.; • Temporary Construction Easements (TCE) for a maintenance road turnaround on the east side of the SAR; • Sidewalk paving re -construction at Nova Academy on the corner of Ross Street and 41 St.: and • Anticipated improvements at the driveway approach to the County of Orange Sherriff's Department Complex on W. Santa Ana Blvd. rd Modification of scope of drainage improvements to rely less on Appendix P to the EIR, the connections to storm drain network Drainage Technical Report, and use surface conveyance in indicate storm drain streets to maintain existing drainage 13 improvements on many patterns to the maximum extent No Change streets outside the project practicable while addressing surface alignment. storm water drainage needs generated by the Project, or change in drainage patterns caused solely by the Project. 14 Single contact wire in PE Two -wire catenary in the PE ROW. No Change. ROW. Underground fiber optics cable No provision for (communications) from SARTC to 15 underground fiber optics OCTA Garden Grove Bus Annex No Change. cable north of PE ROW, approximately 1500 feet west of Harbor Blvd PHYSICAL IMPROVEMENTS The additional design modifications from 60% design would result in the following changes to proposed physical improvements from 30% design: • Track shifted to the center of the PE ROW starting from 140 -feet 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 51 Street at -grade crossing and the MSF. No private property is required and the shift occurs within the existing APE. • Revised location of the traction power substation (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 Santa Ana Regional Transportation Center (SARTC), adjacent to N. Santiago Street Project footprint modifications and anticipated revised construction limits are also proposed in the advancement of 30% design to 60% design. These include: • Trenching in the public right-of-way (ROW) for drainage improvements and utility connections at West 51 Street; • 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., 41 St., E. Santa Ana Blvd., and Santiago St.; • Temporary Construction Easements (TCE) for a maintenance road turnaround on the east side of the SAR; • Sidewalk paving re -construction at Nova Academy on the corner of Ross Street and 41 St.: and • Anticipated improvements at the driveway approach to the County of Orange Sherriff's Department Complex on W. Santa Ana Blvd. rd