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4 Minor Revisions to the Draft Etivironmental Impact Report <br /> TABLE 3.4-2 <br /> SUMMARY OF AMBIENT NOISE LEVEL MEASUREMENTS <br /> Average Hourly Noise Level,d82.3 <br /> Daytime Hours(7 a.m.-10 p.m.) Nighttime Hours(10 p.m.-7 a.m.) <br /> Measurement Site <br /> (Distance to C,L.)' Lei L.— Leq L_ Lir,,,dB <br /> A 43-51 62-779 42-46 67-70 49-53 <br /> B 48-56 67-88 45-47 70-72 52-56 <br /> 1 (40 feel) 71-73 91-106 65-68 88-95 73-75 <br /> 2(350 feet) 55-58 75-85 53-56 70-85 60-62 <br /> 3(50 feet) 67-69 89-99 63-65 84-98 70-72 <br /> 4(60 feet) 64-67 86-96 59-62 82-86 67-59 <br /> 5(50 feet) 65-69 85-94 61-64 84-92 69-71 <br /> 1. Distance from centerline of East River Road to noise level measurement site <br /> 2 Daily noise level averages for September 27,20-1-02008 tbru October 2,2041)2008. <br /> 3 Does not include noise exposure from almond harvesting near Sites A and B on October 2,201 2008 <br /> SOURCE: Bollard Acoustical Consultants,Inc August 18.2010 <br /> Since the pro-led represents the addition cif asphalt plata and associated operations during.;the 110111.5 <br /> of 9 p.m. to 5 a.m.. it is of-interest t0 compare project-related noise exposure to existing ambient <br /> noise eXpOsure during tllese 110tlrs. A suntmar_y of the measure ambient noise exposure in the project <br /> vicinity during the hours of9 p.m. to 5 a.m. oil September 218,2-4W-1008 thru October I <br /> 20 102008 is presented in Table 3.4-3. <br /> h17.16rnjwi0�n (m Page 3.d-11 is wodified a.� fr�llolt,5: <br /> TABLE 3.4-3 <br /> SUMMARY OF AMBIENT NOISE LEVEL MEASUREMENT RESULTS-9 P.M. TO 5 A.M. <br /> Average Measured Noise Level,dB(Rangel <br /> Measurement Site <br /> (Distance to C.Il L,, Ln„x <br /> A 43(35-48) 57(38-70) <br /> B 44(36-50) 61 (46-72) <br /> 1 (40 feet) 65(57-68) 86(81-95) <br /> 2(350 feet) 53(48-58) fig(60-85) <br /> 3(50 feet) 62(54-67) 82(75-98) <br /> 4(60 feet) 59(51-63) 79(73-86) <br /> 5(50 feet) 61 (53-66) 81 (74-94) <br /> 1 Distance from centerline of East River Road to noise level measure-ment site <br /> 2 Noise level averages for the hours of 9 p m to 5 a rn,September 27,25192008 thru October 2 2a3F72008 <br /> SOURCE Bollard Acoustical Consultants, Inc August 18,2010(Appendix B) <br /> A total traflic volume Of 250 vehicles was assumed to utilize East River Road in the project area <br /> during a typical 7-hour sleeping period (assumed to be 10 p.rri. to 5 a.rn.). A tiiven vehicle passby <br /> -- Munn&Perk Ens Qvarry Excaval,on FenmE 4-3 l 121 1286 <br /> Final Environmental Impact Repert September 2011 <br />