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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 />07/25/10 «P:0MJ070l\MNDk1.0 Environmental Analysis.docu <br />4-28 <br />With Calibration (CNEL) <br />Sound <br />Barrier <br />No. <br />Modeled <br />Receptor <br />Existing <br />(2007) <br />Without <br />Project <br />(2030) <br />Future <br />With <br />Project <br />(2030) <br />Change <br />from <br />Without <br />Project <br />Requires <br />Abatement <br />1 <br />R-1 <br />70 <br />71 <br />72 <br />1 <br />no <br />1 <br />R-2 <br />71 <br />72 <br />73 <br />1 <br />no <br />2 <br />R-3 <br />69 <br />70 <br />72 <br />2 <br />no <br />2 <br />R-4 <br />67 <br />68 <br />70 <br />2 <br />no <br />2 <br />R-5 <br />67 <br />67 <br />70 <br />2 <br />no <br />2 <br />R-6 <br />66 <br />67 <br />70 <br />2 <br />no <br />2 <br />R-7 <br />66 <br />67 <br />69 <br />2 <br />no <br />2 <br />R-8 <br />64 <br />65 <br />67 <br />2 <br />no <br />2 <br />R-9 <br />63 <br />64 <br />67 <br />3 <br />yes <br />2 <br />R-10 <br />64 <br />65 <br />67 <br />2 <br />no <br />NR <br />R-11 <br />67 <br />68 <br />70 <br />1 <br />no <br />NR <br />R-12 <br />68 <br />69 <br />70 <br />1 <br />no <br />NR <br />R-13 <br />63 <br />63 <br />65 <br />2 <br />no <br />NR <br />R-14 <br />62 <br />63 <br />64 <br />1 <br />no <br />NR <br />R-15 <br />62 <br />63 <br />64 <br />1 <br />no <br />4 <br />R-16 <br />66 <br />67 <br />70 <br />3 <br />yes <br />4 <br />R-17 <br />65 <br />66 <br />69 <br />3 <br />yes <br />4 <br />R-18 <br />62 <br />63 <br />65 <br />3 <br />no <br />4 <br />R-19 <br />62 <br />62 <br />65 <br />2 <br />no <br />4 <br />R-20 <br />60 <br />61 <br />63 <br />2 <br />no <br />4 <br />R-21 <br />55 <br />56 <br />58 <br />2 <br />no <br />4 <br />R-22 <br />70 <br />70 <br />73 <br />2 <br />no <br />4 <br />R-23 <br />64 <br />65 <br />67 <br />2 <br />no <br />4 <br />R-24 <br />56 <br />57 <br />58 <br />2 <br />no <br />4 <br />R-25 <br />71 <br />72 <br />75 <br />3 <br />nol <br />4 <br />R-26 <br />52 <br />53 <br />55 <br />2 <br />no <br />NR <br />R-27 <br />58 <br />58 <br />60 <br />1 <br />no <br />NR <br />R-28 <br />58 <br />59 <br />61 <br />2 <br />no <br />NR <br />R-29 <br />57 <br />58 <br />59 <br />2 <br />no <br />NR <br />R-30 <br />54 <br />55 <br />56 <br />2 <br />no <br />NR <br />R-31 <br />64 <br />65 <br />66 <br />2 <br />no <br />07/25/10 «P:0MJ070l\MNDk1.0 Environmental Analysis.docu <br />4-28 <br />