Laserfiche WebLink
Section 5 <br />With the construction of the sound walls the well construction activities Would <br />result in noise levels that would range from a 0,1 d6 increase to an 8.3 dB <br />increase. As shown in Table 55, the construction activity would not exceed the <br />night time noise standard. Potential noise impacts would be less than significant. <br />Phase 5 Construction Activities <br />The Phase 5 construction activities would include: Sound Wall Construction and <br />Removal at MBl-4; Conductor Casing Installation at MBI-4; Borehole Drilling and <br />Reaming at MBI-4; Well Construction at MBI-4; and Well Development at MBI-2. <br />Since well development at MBI-2 has the potential to occur simultaneously with <br />the borehole drilling and reaming at MBI-4, it has been analyzed in combination <br />with the borehole drilling and reaming at MBI-4, <br />MBI-4 Sound Wall Construction <br />The noise levels generated from the construction of the Sound wall at M61-4 <br />would range from a 0.1 dB increase to 1.5 dB increase. As shown in Table 56, <br />the sound wall construction would not exceed the City's day time noise standard. <br />Additionally, the construction of the sound wall would occur during the day when <br />the construction activity would be exempt under the City's Noise Ordinance, <br />Potential noise impacts would be less than significant. <br />Table 56: MBI-4 Sound Wall Construction Noise Levels <br />Receiver <br />Description <br />Existing <br />Existing + <br />Increase <br />11 l Noise <br />Con , struction <br />Standard <br />threshold <br />1 <br />Multi Family west Santa <br />41,8 <br />52.2 <br />0.4 <br />55.0 <br />Ana River <br />2 <br />Multi Family west Santa <br />61.9 <br />62.0 <br />01 <br />64.9 <br />Ana River <br />3 <br />Single Family north <br />65.6 <br />65.6 <br />0,0 <br />68.6 <br />- <br />4 <br />-tqLEL!Ave. <br />Single Family north <br />- <br />64.4 <br />64.4 <br />0.0 <br />68.4 <br />Edinger Ave._ <br />5 <br />Single Family north <br />647 <br />64.8 <br />0.1 <br />67.7 <br />Edinger Ave. <br />- <br />6 <br />Single family north <br />713 <br />71.8 <br />0.1 <br />747 <br />1 Edinger Ave. <br />7 <br />Single family north <br />67.6 <br />67.9 <br />0.3 <br />70.6 <br />Edilnger Ave. <br />8 <br />Multi Family north <br />62 <br />63 <br />�� <br />1 <br />�2 <br />Edinger Ave. <br />9 <br />North Centennial <br />--59-,5 <br />61.0 <br />1 5 <br />625 <br />Education Center <br />10 <br />Southeast Centennial <br />--- <br />54.8 <br />54.8 <br />0.1 <br />Education Center <br />11 <br />Single Family east <br />71,8 <br />71.8 <br />00 <br />Fairview Street <br />I <br />Mid Basin Centennial Park��cko1196Project Final EIR 5-179 <br />