25B - ENVIRONMENTAL SERVICES THE PLANNING CENTER

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November 9, 2010 Page 4 infrastructure required to accommodate the project. Following the completion of the evaluation, IBI Group will incorporate the results of the analysis in the Draft PEIR. Sewer Service Analvsis IBI will analyze the "no project" condition and "with project" condition related to sanitary sewer system capacity within the Harbor Boulevard corridor. The evaluation will examine capacity and flow rates for City of Santa Ana sewer systems and Orange County Sanitation District systems, if applicable. If deficiencies in infrastructure are present, IBI group will identify infrastructure required to accommodate the project. Following the completion of the evaluation, IBI.Group will incorporate the results of the analysis in the Draft PEIR. Storm Drainaae Assessmen IBI will analyze the "no project" condition and "with project" condition related to storm drainage system capacity within the Harbor Boulevard corridor. The evaluation will examine capacity and flow rates for City of Santa Ana storm drain systems and Orange County Flood Control District systems, given the proximity to the Santa Ana River. If deficiencies in infrastructure are present, IBI group will identify infrastructure required to accommodate the project. Following the completion of the evaluation, IBI Group will incorporate the results of the analysis in the Draft PEIR.. Task 1.3 Air Quality and Greenhouse Gases The Planning Center will prepare an air quality assessment in support of the project. Redevelopment consistent with the Vision Plan would result in an increase in emissions from stationary and mobile sources. Potential reductions in vehicle emissions from proximity to the Orange County Transportation Authority's Harbor Boulevard transit lines will be quantified based on traffic data provided by IBI Group, In terms of individual projects related to buildout, short- term construction activities and long-term operational activities associated with increased vehicle traffic and residential and nonresidential buildings would increase air pollutant emissions in the City. These emissions have the potential to cumulatively contribute to the nonattainment designations of the South Coast Air Basin (SoCAB). The air quality assessment will evaluate the increase in criteria air pollutant emissions associated with buildout of the proposed land use plan, in accordance with the South Coast Air Quality Management District's (SCAQMD) assessment methodology. Regional air pollution associated with the Vision Plan will be quantified and assessed based on SCAQMD's significance thresholds. In addition, compatibility of land uses with respect to the California Air Resources Board's (CARS) siting recommendations will be evaluated. Air quality modeling datasheets will be included as an appendix to the PEIR. The Natural Resources Agency adopted thresholds for greenhouse gas (GHG) emissions on December 30, 2009. To address these thresholds, the PEIR for the Vision Plan will include a quantitative emissions analysis in accordance with the recently adopted updated CEQA Guidelines (effective as of March 18, 2010). The emissions inventory will be categorized based on the ultimate end use of fossil fuel use-transportation, electricity, building heating/cooking, etc. The PEIR will address GHG emissions reductions specified in AB 32 for the state. Although the Sustainable Communities Strategy for the SCAG region will not be adopted until May 2012, the PEIR will discuss regional GHG emissions reduction targets proposed by the SCAG in accordance with SB 375. The PEIR will include an evaluation of GHG emissions reductions measures requested by the California Attorney General and the California Air Pollution Control Officers Association (CAPCOA). Task 1.4 Nolse The Planning Center will assess noise impacts associated with buildout of the Vision Plan. The purpose of this task is to evaluate existing and future noise levels in the City and the potential increase in the ambient noise environment. Noise from traffic on major arterials will be based on future traffic volumes in the traffic study prepared by IBI Group and modeled using the Federal Highway Administration's Traffic Noise Model. The City's municipal code limits will be used to describe potential stationary source noise impacts.1n addition, the impact assessment will utilize criteria in the 25B-14