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Sections 5 <br />15 <br />North Godinez High <br />5316 <br />53.6 <br />0.0 <br />55.0 <br />School <br />Construction <br />Standard <br />16 <br />Northwest Mitchell <br />43.5 <br />53.2 <br />97 <br />55.0 <br />1 <br />School <br />41,8 <br />41.8 <br />0.0 <br />550 <br />17� <br />North Heritage <br />48.1 <br />57.4 <br />9.3 <br />55.0 <br />2 <br />Museum Structure <br />6'1.9 <br />61.9 <br />0.0 <br />64.9 <br />is <br />out Godinez High <br />43.3 <br />56.5 <br />13.2 <br />55.0 <br />3 <br />School <br />65.6 <br />65.6 <br />0.0 <br />68.6 <br />19 <br />Northwest Godinez <br />46.2 <br />47.0 <br />0.s <br />55.0 <br />4 <br />High School <br />64.4 <br />64.4 <br />10 <br />67.4 <br />7 City hBolse lStandard trr An Noise level +3 de When Existing Noise Levels Above City Standard <br />Bold =ExcaaeCS NrSise Shandanf Threshold <br />Monitoring Well Conductor Casing Installation <br />With the construction of the sound walls, the installation of the conductor casing <br />at the monitoring well would result in noise levels that would range from a 2.1 dB <br />increase to a 5.4 dB increase. As shown in Table 66, the installation of the <br />conductor casing would not exceed the City's day time noise standard. The <br />instalilation of the conductor casing would take 1 day and would occur during the <br />day when the construction activity would be exempt under the City's Noise <br />Ordinance, potential noise impacts would be less than significant. <br />Table 65: Monitoring Well Conductor Casing Installation Noise levels <br />Receiver <br />Description <br />Existing <br />Existing+ <br />Increase <br />t1j Noise ' <br />Construction <br />Standard <br />Threshold <br />1 <br />Multi Family west <br />41,8 <br />41.8 <br />0.0 <br />550 <br />Santa Ana River <br />2 <br />Multi Family west <br />6'1.9 <br />61.9 <br />0.0 <br />64.9 <br />Santa Ana River <br />3 <br />Single Family north <br />65.6 <br />65.6 <br />0.0 <br />68.6 <br />Edinger Ave- <br />4 <br />Single Family north <br />64.4 <br />64.4 <br />10 <br />67.4 <br />(Edinger Ave. <br />5 <br />Single Family north <br />64.7 <br />647 <br />0.0 <br />67.7 <br />Edinger Ave. <br />6 <br />Single family north <br />717 <br />71.7 <br />0.0 <br />747 <br />Edinger Ave. <br />7 <br />Single family north <br />67.6 <br />67.6 <br />0.0 <br />70.6 <br />Edinger Ave. <br />8 <br />Multi Family north <br />66.2 <br />66.2 <br />0.0 <br />69.2 <br />Edinger Ave. <br />9 <br />North Centenn4 <br />59.5 <br />59.5 <br />00 <br />62.5 <br />Education Center <br />10 <br />Southeast Centennial <br />54.8 <br />54.8 <br />0.0 <br />550 <br />I Mid Basin Centennial park Injection Well project Final EIR 5' -190 <br />25C -291 <br />