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February 10, 2012 Kenny Nguyen, PE Senior Civil Engineer City of Santa Ana, Public Works Agency 20 Civic Center Plaza Santa Ana, California 92701 Subject: Request for Contract Amendment — Warner Avenue Widening Project (Engineering, Traffic, & Environmental) (SNT- 08.3E) Dear Mr. Nguyen: This request for a contract amendment details additional tasks and associated costs to complete the engineering and environmental documentation for the Warner Avenue Widening Project. Additional tasks are required to address City - requested changes to the alignment and street widths, delays in the project, outdated environmental analysis, new case law regarding traffic analysis, and updated air quality modeling requiring supplemental technical analysis; all of which could not have been foreseen at the time of our original proposal. Our scope of work and cost estimate have been structured to follow our original task numbering and describe the changes or supplemental work that must be completed for each task. Project Background The kick off meeting for this project was on March 1, 2009. Since the kick -off meeting, alternative concepts have been prepared that evaluate combinations of 100 -, 110 -, 120 -foot right -of -way within varying segments of Warner Avenue. The concepts address property take on the south only, the north only; and on both sides of the street. The City has requested additional engineering designs to identify alternative bike crossings that would connect the bike path on the north and south sides of Warner Avenue without the need for a midblock traffic light. Additionally, the City would like to see alternative plans that would minimize property take and reduce the number of remnant parcels along the north side of Warner Avenue. Revised Scope of Work ENVIRONMENTAL This request includes the following tasks beyond our approved scope of work: TASK 1. ENVIRONMENTAL STUDIES No change; this task is complete (Phase I hazards assessment). TASK 2. DATA COLLECTION No change. Data Collection is complete for the initial phase of the environmental document. TASK 3. INITIAL STUDY New alternative designs for the bike path crossing and to minimize property take will be developed. The Initial Study will be updated based on the final preferred alignment and preliminary engineering plans. Orange County - Northern California • Los Angeles • inland Empire • Centroi Coast • Son Diego • Intermountain West 3 mArlho, Place Soho 1100 1 SoWa Ai. CA 92707 1 r. 714.966.9220 1 !. 714.766.9221 www,plann1n9CAn1vr.C*n1