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c� An employee -owned company December 9, 2009 Mr. Kenny Nguyen, PE Senior Civil Engineer City of Santa Ana 20 Civic Center Plaza, M -36 Santa Ana, California 92702 EXHIBIT A -2 SCOPE OF SERVICES Subject: SR -55 /MacArthur Boulevard Interchange Ramp Widening Project Contract Amendment #2 (revised) Dear Mr. Nguyen: PBS &J appreciates the opportunity to submit this revised proposal agreement to the City of Santa Ana for approval of additional work necessary to update the SR -55 /MacArthur Boulevard Interchange Ramp Widening Project (EA OH2900). The purpose of the additional work effort is to include widening required on MacArthur Boulevard to adequately address the existing traffic operational issues. The original scope of work included widening the eastbound on -ramps with only restriping MacArthur Boulevard per attachment "A" per the City's RFP in 2007. The original scope of services only included restriping of MacArthur Boulevard; however, our detailed technical analysis determined that the existing width of MacArthur Boulevard is not wide enough to accommodate four general purpose traffic lanes with both left and right shoulders as required by Caltrans. This will require PBS &J to include additional plan sheets and details in the construction documents that were not originally included in the scope of work. Due to the previous work efforts put forth for this project the current budget is not sufficient to complete the project with the additional work required to add the roadway widening on MacArthur Boulevard to the plans, specifications and cost estimate. Therefore, PBS &J is requesting a contract amendment in the amount of $45,000, $35,000 for PBS &J's effort and $10,000 for additional survey on MacArthur Boulevard by Towill. Per our ongoing discussions our request for additional fee is based on the following assumptions: • A full hydraulic /hydrology report is not necessary for this project. Basic calculations with new tributary areas and a memo indicating that water is not backing up to Caltrans right -of -way is sufficient. • The drainage and contour grading plan sheets will be combined. • Utilities will be shown on the layout sheets to eliminate separate utility sheets. • The signing and pavement delineation sheets will be combined. • Water pollution control plan sheets will not be required. However, the water pollution control items of work must be in the Caltrans Special Provisions, in the Summary of Quantities plan sheets and in the project cost estimate. The Caltrans Standard Plans will provide the plan sheet information. 625 The City Drive South • Suite 200 . Orange, California 92868 • Telephone: 714.750.7275 • Fax: 714.750.2501 • www.pbsj.com