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Section 5 <br />With the construction of the sound walls, the well borehole drilling activities and <br />well development activities would result in noise levels that would range from a <br />OA dB increase to a 5.3 dB increase. As shown in Table 5, the well borehole <br />drilling activities and well development activities would not exceed the night time <br />noise standard. Potential noise impacts would be less than significant. <br />MB14 Well Construction <br />The well construction activities Would he required to occur 24 hours per day 7 <br />days a week until completion. The duration of the well construction activities <br />would be 3 days, Table 60 and Table 61 show the noise levels during the day <br />and night when well construction would be occurring. <br />Table 60: M131-4 Well Construction Day Time Noise Levels <br />Receiver <br />Descriptions <br />Existing <br />existing 4 <br />Increase <br />Threshold <br />Construction <br />1 <br />Multi Family west Santa <br />41.8 <br />411.9 <br />0.1 <br />55.0 <br />Ana River <br />Multi Family west Santa <br />61.9 <br />62.0 <br />0.1 <br />64,9 <br />Ana River <br />3 <br />Single Family north <br />65.6 <br />656 <br />0.0 <br />68,6 <br />Edinger Ave. <br />4 <br />Single Family north <br />64.4 <br />64.4 <br />0.0 <br />67.4 <br />Edinger Ave. <br />5 <br />Single Family north <br />64.7 <br />64.7 <br />0.0 <br />67.7 <br />Edinger Ave. <br />6 <br />Single family north <br />7117 <br />71.8 <br />0.1 <br />74,7 <br />Edinger Ave. <br />7 <br />Single family north <br />67.6 <br />678 <br />0.2 <br />70,6 <br />Edinger Ave. <br />8 <br />Multi Family north <br />66.2 <br />66,3 <br />69.2 <br />Edinger Ave. <br />9 <br />North Centennial <br />59.5 <br />59.5 <br />0.0 <br />62.5 <br />Education Center <br />10 <br />Southeast Centennial <br />543 <br />54.8 <br />0.0 <br />57.5 <br />Education Center <br />11 <br />Single Family east <br />71,8 <br />71.8 <br />0.0 <br />74.8 <br />Fairview Street <br />12 <br />Single Family east <br />713 <br />71.3 <br />O'D <br />74.3 <br />Fairview Street <br />13 <br />Single Family east <br />71.3 <br />71.3 <br />0.0 <br />74.3 <br />Fairview Street <br />14 <br />Single Family east <br />71.4 <br />71.4 <br />0.0 <br />74.4 <br />Fairview Street <br />15 <br />High <br />536 <br />536 <br />0.0 <br />55,0 <br />tiNorl.I.Godrnez <br />school <br />Mid Basin Centennial Park gc8pri85 ell Project Final EIR 5-184 <br />