25D - 55 AND ALTON AVE OVERCROSSING

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• Climate Change/Greenhouse Gas Emissions. In light of the California Global Warming Solutions Act of 2006 (commonly referred to as Assembly Bill 32 or AB 32), and based on the current guidance from Caltrans, the Huitt-Zollars Team will address the issue of greenhouse gas (GHG) emissions and climate change. It is assumed that the GHG analysis will consist of a qualitative analysis. If a quantitative analysis is required, or if new guidance is issued by Caltrans following December 2008 related to greenhouse gas analysis that requires substantially more effort than currently assumed, then a separate scope and cost for this analysis will be provided. • Air Qua/ity Conformity Ana/ysis Report and Checklist. Under NEPA delegation, the federal air quality conformity determination has not been delegated to Caltrans and must be made by FHWA. The Huitt-Zollars Team will prepare a separate Air Quality Conformity Analysis using the annotated outline for this report on the SER at the time that the report is initiated and will also prepare the Conformity Checklist based on the checklist that is available on the SER at the time that the Air Quality Conformity Analysis Report is prepared. • SCAG Transportation Conformity Working Group. The required TCWG form will be completed and submitted for forwarding to SCAG for inclusion on the agenda for determining if the project is a project of air quality concern (POAQC). It is assumed the project will be found to not be a POAQC and that no specific analysis will be required related to the TCWG determination other than what is already included in this scope of work. • Public Availability. It is assumed that the air quality conformity analysis will have to be made available to the public for review and comment for a period of 30 days. The Huitt-Zollars Team will prepare a notice of availability of the analysis for review and approval by the City and Caltrans; will place the advertisement in a newspaper of local circulation; and, will post the notice as required (i.e., with the County Clerk, etc.). It is assumed that the City will be responsible for paying the newspaper directly for the advertisement. Task 3.2.5 Cumulative Impacts and Growth Inducement The information in the current EIRIEA related to cumulative impacts is out of date with regard to the projects that were analyzed. The Huitt-Zollars Team will prepare a technical memorandum as an attachment to the NEPAICEQA Re-Validation that will update the cumulative impacts analysis for the proposed project and will include a growth inducement analysis based on the current ISIEA annotated outline that is available on the Caltrans SER. It is assumed that the cumulative impacts methodology and approach that is included in the current EIRIEA will be continued in the technical memorandum that is prepared. Task 3.2.6 Hazardous MaterialslWaste The current EIRIEA identifies that during final design additional activities and analyses related to hazardous materialslwaste will be performed (primarily HAZ-1 and HAZ-4). The results of these analyses will be summarized in a memorandum for inclusion as an attachment to the NEPA/CEQA Re-Validation. Task 3.2.7 Water Quality Because the project area is equal to or smaller than that analyzed in the EIRIEA, it is assumed that the PS&E phase Storm Water Data Report will be sufficient for addressing water quality and that no additional analyses or documentation related to water quality will be required. It is also assumed that 401, 404, and 1602 permits will not be necessary and are not included in this scope of work. TASK 4.0 DATA COLLECTION After receiving the Notice to Proceed (NTP), data will be collected to aid in the development of the PS&E. Task 4.1 Aerial Topographic Survey Huitt-Zollars will set and control the aerial targets necessary for the photography and compilation and prepare 1"=40' scale aerial topographic mapping, with 1-foot contour intervals (Design Level Topo). 25D-54