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Mestre Greve Associates August 27, 2007 Mr. Ryan Bean Urban West 936 East Santa Ana Blvd. Santa Ana, CA 92701 Subject: Proposal for Noise Assessment for West End Lofts Dear Mr. Bean: Mestre Greve Associates is pleased to submit this proposal to prepare a noise assessment for the West End Lofts project in the City of Santa Ana. The project proposes the development of a six -story office building on 4,000 square feet. The site is located directly across from the Ronald Reagan Federal Building in the Historic District of Downtown Santa Ana. The project will be exposed to noise from traffic on North Broadway Avenue and West 4"' Street. The noise assessment will support the preparation of the required CEQA documentation for the project. The assessment will be organized in the standard EIR format of existing environment, potential impacts, and mitigation measures to facilitate inclusion of our reports into the main text. The following scope of work is proposed. Scope of Work Existing Environment. Noise measurements will be made up to three locations on an in the vicinity of the project site to document typical daytime noise levels and noise sources impacting the project site. The FHWA highway noise model ("FHWA Highway Traffic Noise Prediction Model," FHWA-RD-77-108) in conjunction with the noise measurements will be used to describe existing noise levels in the project vicinity. Community noise standards relevant to this project are contained in the City of Ontario Noise Element and Noise Ordinance. Standards for the jurisdiction will be summarized and their relevance to the project discussed. Potential Impacts. The potential noise impacts can be divided into short-term construction noise, on -site impacts and impacts on surrounding land uses, and on -site noise/land use compatibility. Noise levels generated by construction activities will be estimated at nearby 27812 El Lazo Road • Laguna Niguel, CA 92677 • (949) 349-0671 • Fax (949) 349-0679