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Pearson Place 2nd Addition Traffic Noise Assessment <br />2.2. Noise Model Predictions <br />Traffic noise predictions for L10 and L50 are presented in Table 2.2 for both the 6-7 AM period (covered <br />by nighttime standards) and the 4-5 PM period (covered by daytime standards). <br />Table 2.2 Predicted Noise Levels (dBA) <br />L10 LEVELS <br />Receiver AM PM <br />H1W 62 64 <br />H2W 65 66 <br />H3W 70 71 <br />H3N 75 75 <br />H1E 62 64 <br />H2E 65 66 <br />H3E 70 70 <br />L50 LEVELS <br />Receiver AM PM <br />H1W 57 59 <br />H2W 59 61 <br />H3W 63 65 <br />H3N 70 70 <br />H1E 57 59 <br />H2E 59 61 <br />H3E 63 64 <br />Predicted levels relative to the NAC-1 Daytime (PM) and Nighttime (AM) standards are shown in <br />Table 2.3. <br />Table 2.3 Exceedance of Nighttime (AM) and Daytime (PM) Standards <br />L10 LEVELS <br />Receiver AM - 55 PM - 65 <br />H1W 7 -1 <br />H2W 10 1 <br />H3W 15 6 <br />H3N 20 10 <br />H1E 7 -1 <br />H2E 10 1 <br />H3E 15 5 <br />L50 LEVELS <br />Receiver AM - 50 PM - 60 <br />H1W 7 4 <br />H2W 9 6 <br />H3W 13 10 <br />H3N 20 15 <br />H1E 7 4 <br />H2E 9 6 <br />H3E 13 9 <br />From the tables above, it can be seen that the noise wall does not provide sufficient noise reduction to <br />comply with the state daytime or nighttime noise standards. <br />David Braslau Associates, Inc. Page 7 <br />