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LSA ASSOCIATES, INC. <br />JULY 2010 <br />INITIAL STU DY/MITIGATED NEGATIVE DECLARATION <br />FIRST STREET BRIDGE REPLACEMENT PROJECT <br />CITY OF SANTA ANA <br />Table 4.1: Community Noise Equivalent Level (CNEL) Calculations With and Without <br />Project <br />With Calibration (CNEL) <br /> <br />Sound <br />Barrier <br />No. <br /> <br />Modeled <br />Receptor <br /> <br />Existing <br />(2007) <br />Without <br />Project <br />(2030) Future <br />With <br />Project <br />(2030) Change <br />from <br />Without <br />Project <br /> <br />Requires <br />Abatement <br />1 R-1 70 71 72 1 no <br />1 R-2 71 72 73 1 no <br />2 R-3 69 70 72 2 no <br />2 R-4 67 68 70 2 no <br />2 R-5 67 67 70 2 no <br />2 R-6 66 67 70 2 no <br />2 R-7 66 67 69 2 no <br />2 R-8 64 65 67 2 no <br />2 R-9 63 64 67 3 es <br />2 R-10 64 65 67 2 no <br />NR R-11 67 68 70 1 no <br />NR R-12 68 69 70 1 no <br />NR R-13 63 63 65 2 no <br />NR R-14 62 63 64 1 no <br />NR R-15 62 63 64 1 no <br />4 R-16 66 67 70 3 es <br />4 R-17 65 66 69 3 es <br />4 R-18 62 63 65 3 no <br />4 R-19 62 62 65 2 no <br />4 R-20 60 61 63 2 no <br />4 R-21 55 56 58 2 no <br />4 R-22 70 70 73 2 no <br />4 R-23 64 65 67 2 no <br />4 R-24 56 57 58 2 no <br />4 R-25 71 72 75 3 nol <br />4 R-26 52 53 55 2 no <br />NR R-27 58 58 60 1 no <br />NR R-28 58 59 61 2 no <br />NR R-29 57 58 59 2 no <br />NR R-30 54 55 56 2 no <br />NR R-31 64 65 66 2 no <br />07/25/10 «P:0MJO7Ol\MNDk1.0 Environmental Analysis.docu <br />4-28 <br />20A-79