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City of Santa Ana Proposal for 601 North Parkcenter Drive Initial Study and Mitigated Negative Declaration The State Highway analysis will be prepared in accordance with the Caltrans Guide for the Preparation of Traffic Impact Studies (State of California Department of Transportation. December 2002). This scope of work assumes the State Highway analysis study area will include the following four (4) State Highway intersections: 1-5 Southbound Ramps/4th Street; 1-5 Northbound Ramps/4th Street; SR-55 Southbound Ramps/4th Street; and SR-55 Northbound Ramps/4th Street -Irvine Boulevard. The analysis will assess forecast traffic impacts of the proposed project during the a.m. peak hour and p.m. peak hour at the State Highway study facilities. The analysis will document the existing operation of the study intersections and determine near -term and long-range year operation of the study intersections both with and without the proposed project to identify project -related traffic impacts using the Highway Capacity Manual (HCM) 2000 analysis methodology. If the State Highway analysis shows the proposed project will significantly impact a State Highway facility based on Caltrans thresholds of significance, mitigation measures will be recommended in accordance with Caltrans performance criteria. The analvsis will also document forecast operating conditions after application of recommended mitigation measures. Orange County Congestion Management Program Analysis. The purpose of the Orange County Congestion Management Program (CMP) is to develop a coordinated approach to managing and decreasing traffic congestion by linking the various transportation, land use and air quality planning program throughout the County. The program is consistent with that of the Southern California Association of Governments (SCAG). The CMP requires review of significant individual projects that might on their own impact the CMP transportation system. The Orange County CMP has identified that projects generating 1,600 trips/day and that will directly access or be in close proximity to a CMP Highway System link require a TIA. Nearby CMP monitored study intersections include the following: SR-55 Southbound Ramps/4th Street; and SR-55 Northbound Ramps/4th Street -Irvine Boulevard. Since the proposed project is not expected to exceed Orange County CMP daily trip thresholds assigned to a CMP Highway System link, this scope of work assumes no CMP traffic analysis. _ Traffic Response to Comments. RBF will prepare written responses to traffic -related comments received on the environmental document during the public review period for inclusion in the final environmental document. This scope of work assumes up to twenty-four (24) hours are adequate to prepare the written responses; if additional hours are required, the hours can be accommodated for a fee in addition to the fee associated with this scope of work. JN 10-105908 0 8 0 August 8, 2007