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Chapter 6. Existing Noise Environment <br />Table 6.4. Long -Term (24-Hour) Noise Level Measurement Results at <br />2505 West 16th Street, Santa Ana, California (LT-2) <br />Start Time <br />Date <br />Noise Level <br />dBA LQ <br />1 <br />2:00 PM <br />4/18/2018 <br />64 <br />2 <br />3:00 PM <br />4/18/2018 <br />64 <br />3 <br />4:00 PM <br />4/18/2018 <br />64 <br />4 <br />5:00 PM <br />4/18/2018 <br />64 <br />5 <br />6:00 PM <br />4/18/2018 <br />64 <br />6 <br />7:00 PM <br />4/18/2018 <br />64 <br />7 <br />8:00 PM <br />4/18/2018 <br />63 <br />8 <br />9:00 PM <br />4/18/2018 <br />63 <br />9 <br />10:00 PM <br />4/18/2018 <br />62 <br />10 <br />11:00 PM <br />4/18/2018 <br />59 <br />11 <br />12:00 AM <br />4/19/2018 <br />57 <br />12 <br />1:00 AM <br />4/19/2018 <br />54 <br />13 <br />2:00 AM <br />4/19/2018 <br />55 <br />14 <br />3:00 AM <br />4/19/2018 <br />56 <br />15 <br />4:00 AM <br />4/19/2018 <br />60 <br />16 <br />5:00 AM <br />4/19/2018 <br />63 <br />17 <br />6:00 AM <br />4/19/2018 <br />66 <br />18 <br />7:00 AM <br />4/19/2018 <br />66 <br />19 <br />8:00 AM <br />4/19/2018 <br />67 <br />20 <br />9:00 AM <br />4/19/2018 <br />66 <br />21 <br />10:00 AM <br />4/19/2018 <br />65 <br />22 <br />11:00 AM <br />4/19/2018 <br />65 <br />23 <br />12:00 PM <br />4/19/2018 <br />66 <br />24 <br />1:00 PM <br />4/19/2018 <br />64 <br />Source: Compiled by LSA (May 2018). <br />Bold numbers represent the peak traffic noise hour. <br />dBA Leq = equivalent continuous sound level measured in A -weighted decibels <br />70 <br />v <br />a <br />a 65 <br />m <br />a <br />60 <br />a <br />v <br />0 <br />55 <br />z <br />50 <br />Long -Term 24-Hour Noise Level Measurement <br />LT-2: 2505 West 16th Street <br />a a a a a a a a a a a a a a Q a a a Q a a a a 0- <br />0 0 0 0 0 0 0 0 0 0 0 0 0 0 <br />0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 <br />N M T Ln L0 � W M O -1 N -1 N M � M L0 r\ W M O -1 <br />Time of Day <br />Fairview Street Improvements from 9th Street to 16th Street <br />and Bridge Replacement Project Noise Study Report <br />37 <br />