Agmt11 Jones and Stokes Associates, Inc.-ICF Consulting Group, Inc.

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Charles Jany May 19, 2011 Page 7 b. The preliminary analysis indicates potentially significant construction period emissions. We propose to further refine the emission computations with the URBEMIS2007 model and, if necessary, develop mitigation measures to reduce significant impacts. c. The applicant's preliminary analysis indicates potentially significant construction period TAC impacts, because residences are located within 100 meters of the project site. A screening health risk assessment is proposed that would use PM2.5 exhaust emissions computed for the construction period using URBEMIS2007 and input those into the ISCST3 dispersion model to predict construction period concentrations. Guidance provided by BAAQMD would be applied to predict health risk impacts at the adjacent residences. Acoustical /Noise Analysis The applicant has provided an acoustical study prepared by Charles M. Salter and Associates. This study provides existing noise level information and addresses the interior noise and land use compatibility of the proposed project. This study would be reviewed for applicability. I &R would peer review the applicant's noise study and provide an independent assessment of the overall approach to the study, the criteria used in the assessment, the noise monitoring survey, the predictive methods utilized in the analysis, conclusions reached regarding potential noise impacts and mitigation, and the completeness of the report. If necessary, a memo would be submitted summarizing our findings and a final review of the applicant's study would be made to confirm that any significant comments have been adequately addressed. Optional Task 2b: Off Site Noise Impact Assessment Our initial review indicates that off-site noise impacts caused by the construction and operation of the proposed project (i.e., traffic) have not been addressed. Therefore, we propose as an optional task, to address construction noise to adjacent residences and long- term traffic noise increases caused by the project. In this task, noise data contained in the applicant's study and data gathered nearby will be used to predict future noise levels at the property and adjacent sensitive receivers. Noise resulting from the construction and operation of the project would be computed based on a review of the project's construction schedule and equipment lists, as well as data contained in the project's traffic study. From these data, I &R would assess the potential for significant noise impacts resulting from the proposed project. Preliminary Geotechnical Investigation The applicant has provided a preliminary geotechnical investigation prepared by Treadwell and Rollo. This study provides an assessment of soil and groundwater conditions, seismicity and seismic hazards, and construction considerations relating to the proposed project. This study would be reviewed for adequacy as it relates to fulfilling the requirements of CEQA.