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PROPOSAL FOR SERVICES MOUNTAIN HOUSE NEIGHBORHOODS I&J INITIAL STUDY/MMGATm NEGATIVE DECLARATION ■ Identify the impacts of hazardous materials in a comprehensive summary fashion. The section will include a discussion of all surrounding sites that may contain hazardous materials that could potentially affect the subject site.Any relevant maps,records,reports,etc. will be attached as an Appendix to the ADIS/MND. If there is a significant chance that hazardous materials and/or soil contamination exists,further detailed investigation may be recommended. ■ Propose feasible mitigation measures for all potentially significant impacts to reduce or eliminate any identified impacts associated with hazardous materials and soil contamination. I. Air Quality Illingworth&Rodkin,Inc. (I&R) will assess the air quality impacts of the proposed project. The following tasks are proposed to complete the Initial Study: ■ Evaluate conformance of the proposed project with transportation control measures contained in the applicable Air Quality Attainment plans. ■ Calculate the project's contribution to regional air quality using the latest version of the URBEMIS model (currently URBEMIS72002). These emissions would be compared to the thresholds contained in the SJVUAPCD and the appropriate mitigation measures would be identified. ■ Describe SJVUAPCD's new Indirect Source Review Rule(ISR)and how it would affect the project. Mitigation measures recommended or required under the rule would be identified. Calculation of mitigation offsets or fees would not be conducted at this time,but the applicant would be required to apply to SJVUAPCD for a permit. ■ Incorporate latest control measures to reduce dust emissions from construction and agricultural operations. It is assumed that no work would need to be undertaken to assess objectionable odors since the air quality study for the Master EIR evaluated the impacts from the wastewater treatment to future residents. I&R further assumes that no work would need to be completed to assess carbon monoxide emissions since the air quality study for the entire project indicated less-than-significant impacts due to carbon monoxide. Traffic assumptions have not changed significantly and emissions factors are not substantially higher to change the conclusion. J. Noise This section will be completed by Illingworth &Rodkin and their work will be incorporated into the IS/MND. They will evaluate the potential noise impacts to residential units and identify the need for any soundwalls or other mitigation measures. ■ Review the proposed plan for consistency with the requirements of the applicable planning regulations. Specifically, I&R will recalculate traffic noise levels based on the projected traffic volumes and evaluate the project's consistency with planning guidelines. • Review soundwall plans to see: 1)if sound walls are necessary; and 2)if they are,where they should be located and how tall they should be to provide the necessary attenuation. Wall height restrictions will be compared to the proposed noise wall heights, including a review of 07/17/06 10