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42O 1. TRAFFIC/CIRCULATION The project site is located in an area which has existing and projected circulation deficiencies which will not be entirely mitigated by Planned roadway improvements. Based on the Lake Center EIR traffic study, the intersections of Fairview Street/MacArthur Boulevard, and Hyland Avenue/MacArthur Boulevard in Santa Ana, and 1-405/Harbor, and 1-405/Fairview in Costa Mesa will operate at deficient levels of service under cumulative conditions. While the proposed project would not be solely responsible for the deficient operation of these intersections, it would contribute to the deficient operation of these intersections. Therefore, it is considered to contribute to a cumulative significant adverse effect. Roadway improvements and transportation demand management strategies will somewhat reduce traffic congestion in the vicinity of the project site; however, the cumulative impact cannot be altogether mitigated to a level considered leas than significant. The no project, and development under existing land use designations alternatives could reduce the traffic impact of the proposed project on these intersections, but not necessarily to a level considered less than significant. Nor would these alternatives meet the project objectives. 2. AIR QUALITY The air quality in South Coast Air Basin is generally poor. Cumulative development will contribute to a further degradation of basin air quality and is, therefore, significant. The proposed project--although consistent with the guidelines set by SCAQMD and SCAG-- would contribute incrementally to the quantity of emissions intensifying this region-wkte problem. Air quality regularly exceeds the federal standard in the South Coast Basin; this will be the case whether the project is implemented or not. Additional feasible transportation, land use, and energy conservation measures have been utilized to mitigate other negative air quality impacts of the project; however, the cumulative regional impact to air quality cannot be avoided if any development is permitted. Project alternatives will not alter the present air quality conditions, nor are there any mitigation measures specific to the project that are capable of altogether avoiding this environmental impact. JB 1/08850001.ST 2