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Section 5 <br />With the construction of the sound walls, the well borehole drilling activities would <br />result in noise levels that would range from a 0.1 dB increase to an 11.0 dB <br />increase. As shown in Table 47, the construction activity would not exceed the <br />night tirne noise standard. Potential noise impacts would be less than significant, <br />MBI-3 Well Construction <br />The well construction activities would be required to occur 24 hours per day 7 <br />days a week until completion. The duration of the wel'l construction activities <br />would be 3 days. Table 48 and Table 49 show the noise levels during the day <br />and night when well construction would be occurring. <br />Table 48; MIBI-3 Well Construction Day Time Noise Levels <br />Receiver <br />Description <br />Existing <br />F-xisting + <br />Increase <br />Threshold <br />Construction <br />1 <br />Multi Family west Santa <br />413 <br />46.0 <br />4,2 <br />55.0 <br />Ana River <br />2 <br />Multi Family west Santa <br />61.9 <br />62.0 <br />OA <br />64.9 <br />Ana River <br />3 <br />Single Family north <br />65.6 <br />65,15 <br />01.0 <br />686 <br />I Edinger Ave. <br />4 <br />Single Family north <br />64.4 <br />64.6 <br />02 <br />67,6 <br />Edinger Ave, <br />5 <br />Single Family north <br />64.7 <br />64,8 <br />0.1 <br />67.7 <br />Edinger Ave. <br />6 <br />Single family north <br />71.7 <br />71,7 <br />m <br />74.7 <br />Edinger Ave. <br />7 <br />Single family north <br />676 <br />67.6 <br />U <br />70.6 <br />Edinger Ave. <br />8 <br />Muld Family north <br />66.2 <br />6-6-2 <br />0.0 <br />691 <br />Edinger Ave. <br />9 <br />North Centennial <br />59.5 <br />5947 <br />0.2 <br />62-5 <br />Education Center <br />-0 <br />Southeast Centennial <br />54,8 <br />5418 <br />0.0 <br />55,0 <br />Education Center <br />11 <br />Single Family east <br />71.8 <br />71.8 <br />M <br />7448 <br />Fairview Street <br />12 <br />Sirrgie Family east <br />71.3 <br />71- _6 <br />0.0 <br />74.3 <br />Fairview Street <br />13 <br />Single Family east <br />71.3 <br />71.6 <br />0.0 <br />74.'.3 <br />Fairview Street <br />14 <br />Single Family east <br />71 A <br />71.4 <br />GrU <br />74.4 <br />Fairview Street <br />15 <br />North Godinez High <br />53.6 <br />516 <br />0,0 <br />55.0 <br />school <br />16 <br />Northwest Mitchell <br />43.5 <br />44.6 <br />1.1 <br />55,0 <br />Mid Basin Centennial Park �Vp;'Qn,�jyroject Final Elks 5 -169 <br />