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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 a 6.4 dB <br />increase. As shown in Table 77, the well borehole drilling activities would not <br />exceed the City's day time noise standard. Additionally, the well borehole drilling <br />activities would be conducted during the day when the construction activity would <br />be exempt under the City's Noise Ordinance. Potential noise impacts Would be <br />less than significant. <br />Table 78: MBI-4 Borehole Drilling Night Time Noise Levels <br />Receiver <br />Fairview Street <br />Existing <br />ExIisting + <br />rrtcrdese <br />Thresbold <br />13 <br />Single Family east <br />71.3 <br />71.3 <br />0,0 <br />743 <br />1 <br />Fairview Street <br />34.6 <br />36.3 <br />1.7 <br />50,0 <br />14 <br />Single Family east <br />71.4 <br />71.4 <br />0.0 <br />74.4 <br />2 <br />Fairview Street <br />54.5 <br />54.6 <br />OA <br />57.5 <br />15 <br />North Godinez High <br />53,13 <br />536 <br />00 <br />55.0 <br />3 <br />School <br />581 <br />58.1 <br />0.0 <br />61.1 <br />16 <br />Northwest Mitchell <br />43,5 <br />436 <br />OA <br />55,0 <br />4 <br />School <br />57.0 <br />57.0 <br />0.0 <br />60,0 <br />17 <br />North Heritage Museum <br />48.1 <br />48.2 <br />01 <br />55.0 <br />5 <br />Structure <br />57.3 <br />57.4 <br />Q'i <br />603 <br />18 <br />South Godinez High, <br />43,3 <br />433 <br />O'c <br />55.0 <br />6 <br />School <br />64.3 <br />64.4 <br />0.1 <br />67.3 <br />19 <br />Northwest Godinez <br />46.2 <br />462 <br />0.0 <br />55.0 <br />7 <br />High School <br />602 <br />I <br />0.5 <br />63.2 <br />I =City+ Noise Standard cr Amblent Noise level +3 do when Ambient above City Nalse, standard <br />Bold =Exceeds Noise Standard Threshold <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 a 6.4 dB <br />increase. As shown in Table 77, the well borehole drilling activities would not <br />exceed the City's day time noise standard. Additionally, the well borehole drilling <br />activities would be conducted during the day when the construction activity would <br />be exempt under the City's Noise Ordinance. Potential noise impacts Would be <br />less than significant. <br />Table 78: MBI-4 Borehole Drilling Night Time Noise Levels <br />Receiver <br />Description <br />Existing <br />ExIisting + <br />rrtcrdese <br />Thresbold <br />Cion,stnul:416n <br />1 <br />Multi Family west <br />34.6 <br />36.3 <br />1.7 <br />50,0 <br />Santa Ana River <br />2 <br />Multi Family west <br />54.5 <br />54.6 <br />OA <br />57.5 <br />Santa Ana River <br />3 <br />Single Family north <br />581 <br />58.1 <br />0.0 <br />61.1 <br />Edinger Ave, <br />4 <br />Single Family north <br />57.0 <br />57.0 <br />0.0 <br />60,0 <br />Edinger Ave, <br />5 <br />Single Family north <br />57.3 <br />57.4 <br />Q'i <br />603 <br />Edinger Ave. <br />6 <br />Single family north <br />64.3 <br />64.4 <br />0.1 <br />67.3 <br />Edinger Ave. <br />7 <br />Single family north <br />602 <br />60.7 <br />0.5 <br />63.2 <br />Edinger Ave, <br />8 <br />Multi Family north <br />58,9 <br />59,0 <br />Edinger Ave.. <br />Mid Basin Centennial Park Project Final EIR 5-206 <br />