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Table 21 <br />Change in Existing Noise Levels Along Roadways as a Result of Project (dBA CNEL) <br />Modeled <br />Noise Levels <br />(dBA CNEL) <br />Distance <br />from <br />roadway <br />Existing <br />Existing <br />Chan e <br />g <br />Roadway <br />Segment <br />centerline <br />Without <br />Plus <br />I <br />Exceeds <br />Increase of <br />to right- <br />Project <br />Project <br />Noise <br />Standards <br />3 dB or <br />of -way <br />at right- <br />at right- <br />Level <br />More <br />(feet)' <br />of -way <br />of -way <br />West of Flower <br />Sunflower <br />Street/Sakioka Drive <br />60 <br />75.37 <br />75.42 <br />0.05 <br />Yes <br />No <br />Avenue <br />East of Flower Street/Sakioka <br />Drive <br />60 <br />75.04 <br />75.14 <br />0.10 <br />Yes <br />No <br />Flower <br />Street <br />North of Sunflower Avenue <br />50 <br />72.07 <br />72.08 <br />0.01 <br />Yes <br />No <br />(I) Exterior noise levels calculated 5 reet above pad elevation, perpendicular to subject roadway. <br />(2) Right-of-way per the City of Santa Ana General Plan Circulation Element, 1998. <br />Figure 17 shows the calculated exterior noise levels throughout the project at various reception <br />locations based on traffic on area roadways adjacent to the project. Table 22 lists the noise levels at <br />each of the reception locations shown in Figure 17. As shown, the exterior noise levels at the facades <br />of the apartment building that faces Sunflower Avenue with traffic volumes after project completion <br />would range between 29 dBA CNEL and 75 dBA CNEL. The exterior noise levels due to buildout traffic <br />volumes at the facades of the building that would face Flower Street would range between 66 dBA <br />CNEL and 71 dBA CNEL. The exterior noise levels at the pool/recreation area are calculated to be up <br />to 65 dBA CNEL. <br />Table 22 <br />Buildout Traffic Noise Levels and Recommended Window STC Ratings <br />Receptor <br />Floor <br />Buildout <br />Traffic Noise <br />Levels <br />Required <br />Exterior to <br />Interior Noise <br />Reduction' <br />Requir <br />ad <br />Windo <br />wSTC' <br />Receptor <br />Floor <br />Buildout <br />Traffic Noise <br />Levels <br />Required <br />Exterior to <br />Interior Noise <br />Reduction' <br />Required <br />Window <br />STC' <br />1 <br />1 <br />63 <br />18 <br />21 <br />11 <br />1 <br />29 <br />n/a <br />n/a <br />2 <br />65 <br />20 <br />23 <br />2 <br />29 <br />n/a <br />n/a <br />3 <br />66 <br />21 <br />24 <br />3 <br />31 <br />n/a <br />n/a <br />4 <br />66 <br />21 <br />24 <br />4 <br />34 <br />n/a <br />n/a <br />5 <br />66 <br />21 <br />24 <br />5 <br />39 <br />n/a <br />n/a <br />2 <br />1 <br />59 <br />14 <br />17 <br />12 <br />1 <br />60 <br />15 <br />18 <br />2 <br />61 <br />16 <br />19 <br />2 <br />60 <br />15 <br />18 <br />3 <br />62 <br />17 <br />20 <br />3 <br />61 <br />16 <br />19 <br />4 <br />63 <br />18 <br />21 <br />4 <br />61 <br />16 <br />19 <br />5 <br />63 <br />18 <br />21 <br />5 <br />61 <br />16 <br />19 <br />3 <br />1 <br />68 <br />23 <br />26 <br />13 <br />1 <br />73 <br />n/a <br />n/a <br />2 <br />70 <br />25 <br />28 <br />2 <br />74 <br />n/a <br />n/a <br />Legacy Sunflower Apartments Page 80 <br />Mitigated Negative Declaration —March 14, 2019 <br />751-166 <br />