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IBI Group <br />18401 Von Kerman Avenue—Suite 110 <br />$� Irvine CA 92612 USA <br />GI20UP tel 949 833 5588 <br />fax 949 833 5511 <br />February 12, 2018 <br />Melanie McCann <br />City of Santa Ana <br />20 Civic Center Plaza, Ross Annex M-20 <br />Santa Ana, CA 92702 <br />Exhibit A-1; 4th Amendment to <br />Agreement # A-2011-198 <br />AMENDMENT PROPOSAL NO. 6 - CIRCULATION ELEMENT UPDATE <br />This letter proposal details IBI Group's request for an amendment under our contract with the City <br />of Santa Ana for the Circulation Element Update project. Work efforts associated with this <br />amendment request involve new work requested by the City of Santa Ana. Specifically, the city <br />has requested that IBI Group update the traffic impact study to include the removal of two <br />proposed MPAH arterial reclassifications: MacArthur Boulevard from Harbor Boulevard to Main <br />Street and McFadden Avenue from the West City Limit to Harbor Boulevard. The task listed below <br />corresponds to the tasks assigned in the original scope of services for this contract. The proposed <br />budget for completing this work is attached to this letter. <br />Task Evaluation of Master Streets and Highway Plan <br />Under Amendment No. 5, IBI Group completed an update to the draft traffic impact analysis for <br />the updated Circulation Element. This analysis included assessment of a refined roadway network <br />that excluded a proposed arterial roadway along the PE ROW and other refinements to the <br />roadway network, as requested by the city. This analysis was completed during 2017, and the <br />traffic study results were submitted to OCTA for review in October of 2017. <br />Subsequent to this latest traffic analysis effort, the city has identified two proposed street <br />reclassifications that should be removed from the Circulation Element update. The proposed <br />reclassifications to be removed are: <br />• MacArthur Boulevard from Harbor Boulevard to Main Street <br />• McFadden Avenue from West City Limit to Harbor Boulevard <br />The removal of these reclassifications from the future roadway network will require a new model <br />run to be conducted by OCTA, using the updated proposed roadway network. IBI Group will <br />coordinate with OCTA to obtain updated OCTAM model forecasts. Once updated forecasts are <br />available, IBI Group will update the traffic analysis to include these new model forecasts. As part <br />of this task, we will also prepare an updated version of the traffic study report for review by City <br />staff and OCTA staff. <br />181 Group is a group of firms providing professional services <br />