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` MOUNTAIN HOUSE PROPOSED ALTAMONT HEIGHTS TENTATNE MAP 4. ENVIRoNMENTAL CHECKLIST <br /> 4.11 NOISE <br /> L <br /> Mitigation Measures <br /> No additional mitigation measures are required. <br /> e) For a project located within an airport land use plan or, where such a plan has not <br /> been adopted, within two miles of a public airport or public use airport, would the <br /> �. project expose people residing or working in the project area to excessive noise levels? <br /> The Byron Airport is located approximately 7.5 miles northwest of the project site. The <br /> Contra Costa County Airport Land Use Compatibility Plan shows that future noise levels due <br /> to aircraft flying over the site would be less than 50 dBA for worst-case conditions. This is <br /> below the noise standards for the proposed project(65 dBA La„at outdoor activity areas). <br /> r Thus,the impact of aircraft noise would less than significant. <br /> Mitigation Measures <br /> No mitigation measures are required. <br /> J) For a project within the vicinity of a private airstrip, would the project expose people <br /> residing or working in the project area to excessive noise levels? <br /> This proposed project is not located near any private airstrip. <br /> Mitigation Measures <br /> 6. No mitigation measures are required. <br /> L <br /> SOURCES OF INFORMATION <br /> LEDAW, 2005a. College Park at Mountain House, Specific Plan III, Revised Draft,June 10. <br /> EDAW, 2005b. Final Environmental Impact Report, College Park at Mountain House, <br /> Specific Plan III, Volume III, SCH#2003102074,June 24. <br /> San Joaquin County Community Development Department, 1994. Mountain House New <br /> Community Master Plan, adopted November 10, amended September 12,2000. <br /> San Joaquin County Community Development Department, 1994. Final Environmental <br /> Impact Report for Mountain House Master Plan and Specific Plan I, September. <br /> 4-58 <br />