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Normally Conditionally Normally Clearly <br /> Acceptable' Acceptable2 Unacceptable3 Unacceptable4 <br /> Residential—Low-Density Single-Family,Duplex,Mobile <60 55-70 70-75 75+ <br /> Home <br /> Residential—Multifamily <65 60-70 70-75 75+ <br /> Transient Lodging—Motel,Hotel <65 60-70 70-80 80+ <br /> Schools,Libraries,Churches,Hospitals,Nursing Homes <70 60-70 70-80 80+ <br /> Auditoriums,Concert Halls,Amphitheaters <70 65+ <br /> Sports Arena,Outdoor Spectator Sports <75 70+ <br /> Playgrounds,Neighborhood Parks <70 67.5-75 72.5+ <br /> Golf Courses,Riding Stables,Water Recreation,Cemeteries <75 70-80 80+ <br /> Office Building,Business Commercial,and Professional <70 67.5-77.5 75+ <br /> Industrial,Manufacturing,Utilities,Agriculture <75 70-80 75+ <br /> Notes:dBA=A-weighted decibels;Ldp=day-night average noise level <br /> Specified land use is satisfactory,based on the assumption that any buildings involved are of normal conventional construction,without <br /> any special noise insulation requirements. <br /> 2 New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and <br /> needed noise insulation features included in the design.Conventional construction,but with closed windows and fresh air supply systems <br /> or air conditioning,will normally suffice. <br /> 3 New construction or development should generally be discouraged.If new construction or development does proceed,a detailed analysis <br /> of the noise reduction requirements must be made and needed noise insulation features included in the design.Outdoor areas must be <br /> shielded. <br /> 4 New construction or development should generally not be undertaken. <br /> Source:OPR 2003 <br /> Title 24,Part 2, of the State of California Building Code establishes noise standards for all new multifamily <br /> residential units. Where exterior noise levels exceed 60 dBA CNEL/Ld,,,the code stipulates that an acoustical <br /> analysis shall be performed and submitted before construction. The acoustical analysis is required to establish <br /> mitigation measures that will limit maximum CNEL/Ld„levels to 45 dBA in any inhabitable room. Although there <br /> are no generally applicable interior noise standards pertinent to all uses, California communities typically adopt a <br /> CNEL/Ld„standard of 45 dBA as a maximum limit on interior noise in all residential units. <br /> California Department of Transportation <br /> For the protection of fragile,historic, and residential structures,the California Department of Transportation <br /> (Caltrans)recommends a more conservative threshold of 0.2 in/sec PPV for normal residential buildings and <br /> 0.08 in/sec PPV for old or historically significant structures(Caltrans 2004). These standards are more stringent <br /> than the federal standard established by CHABA,presented above. <br /> EDAW Manteca WQCF and Collection System Master Plans EIR <br /> Noise 4.4-8 City of Manteca <br />