25G - AGMT - ENVIRONMENTAL SERVICES - 200 E FIRST AMERICAN WAY

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Environmental Consulting Services (200 East First American Way) I City of Santa Ana quality conditions as measured at said monitoring station and a description of monitoring data compares to national and state ambient air quality standards. e Construction-Period Mass Emissions. A construction emissions inventory that will include combustion emissions related to construction equipment operation; fugitive emissions related to site preparation and earthmoving activities; mobile source emissions related to construction worker and haul truck trips; and ROC emissions related architectural coating application and asphalt pavement. The emission inventory will then be compiled on a daily basis and compared to SCAQMD regional emissions and localized emissions thresholds to determine significance. ¦ Operations-Period Mass Emissions Analysis. A regional emissions inventory including a quantification of mobile source emissions related to project-generated traffic and stationary source emissions related to energy demand (i.e., electricity and natural gas consumption) will be included in the analysis. This emission inventory will be compiled using the URBEMIS 2007 land use emissions model, or other approved model, and compared to applicable SCAQMD daily emissions thresholds to determine significance. ¦ Localized Carbon Monoxide Concentration Analysis. The analysis will include the degree to which project- related traffic volumes have a potential to effect local carbon monoxide (CO) concentrations using California Department of Transportation CO Hotspot Protocol. Potential impacts will be evaluated utilizing the CALINE4 dispersion model and EMFAC 2007 emissions factors at up to 8 intersection locations for six scenarios (Le., Existing No-Project, Existing with Project, Existing with Project Alternative, Future No-Project, Future with Project, and Future with Project Alternative). ¦ Potential for Health Risk Impacts. Based on a review of the Project Description, a quantitative health risk assessment (HRA) will not be required. Impacts related to toxic air contaminant (TAC) emissions during short- term construction and long-term operations will be evaluated qualitatively. ¦ Climate Change/Greenhouse Gas Emissions. Using guidance detailed in the Local Government Operations Protocol for the Quantification and Reporting of Greenhouse Gas Emissions Inventories (CARB, September 25, 2008), project-related GHG emissions will be estimated using the a combination of approved software programs and the GHG calculation formulas provided in the California Climate Action Registry, General Reporting Protocol, Reporting Entity-Wide Greenhouse Gas Emissions, version 3.1. Significance criteria will be developed based on discussions with SCAQMD and City staff members, using the CARB preliminary draft staff proposal Recommended Approaches for Setting Interim Significance Thresholds for Greenhouse Gases under the California Environmental Quality Act (CARB, October 24, 2008) and the Preliminary Draft CEQA Guideline Amendments for Greenhouse Gas Emissions (OPR, January 8, 2009) as points of departure. ¦ Consistency with AQMP. The analysis will evaluate the project's consistency with the SCAQMD's 2007 AQMP in accordance with the procedures set forth by the SCAQMD. ¦ Mitigation Measures. Mitigation measures will be developed, where applicable, to address any significant air quality impacts. Noise Impact Study ICF will conduct a noise analysis for the proposed project in accordance with CEQA requirements. Our local noise engineer is certified by the Institute of Noise Control Engineers and has conducted numerous analyses for projects involving residential uses. The Noise Impact Study will: ¦ Identify relevant noise regulations (City, State and federal) and determine significance thresholds by which to compare potential project impacts. ¦ Identify existing land uses in the project area along with existing sources of noise, including the nearby roadways. ¦ Quantify existing noise conditions in the project area based on noise measurements. Five short-term noise measurements (10-15 minutes in duration) and one long-term measurement (24 hour) are included within this Use or disclosure of dare contalnerfon this sheet is subject to the restr0on on the tide page o/this proposal. Page 14 25G-26