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0 <br /> O <br /> located in z depression. In. addidep,-since the noise.measimmielit data <br /> -we-d to extrapolate the asphalt plant opferafions were due to -dayt4ne <br /> asphaltpla4nt oper& R iotfs, .40d were colleoted'At � distance-Of ovol,00,0 <br /> 'feet from the -plaht, the expected. niglittime noise. 14yels, doe to <br /> atmospheric conditions could increase by as' .much as 5 dBA.to 10 dRA. <br /> Tile-IM Q MI are.-_-awqe:,qf the-vffeots id atmopboric peditions:-aur" <br /> rugh batch. <br /> plant noise leVel4have-eacprately,:been:identified. Anaccuratepicthod f9i <br /> tvaluating asphalt, plant noise levels is to rtin; thrq ri pla t -d"ing <br /> tbo <br /> fflghttime hoUis And collecf!ipik 16vel-gata,during the operations. This <br /> i .�6it6fi W ii <br /> ,& . -Pbli�Al A <br /> W0111 ProVIde­_,..-'iRna,,-,C,1PeA 0 i6p 611 1 <br /> the very least, r;46tenbe i.ioige­leval-ma§Uren*jits df the,asphalt Plarit <br /> ShQuId have.been-cond.qpled. These reference xr�easurerrients could have <br /> been used to genertite ndise..d.tiatburt associated with lhe,operations: 17he <br /> noise level data is-eritereO Jhto a model which Oa.g Ar,,00uht for prov4iji ' <br /> wind diteotion, Wind speed;. -waiperatwe, atmospheric oonditionsand <br /> topOgiuP.by— <br /> ■ ]Iie f6pott onlyevMuates Iho platit ope'raflo'n§­at the re§Wndes to:the east. <br /> Howiaver., there. aro,residences.dl.o.sq-to t4o project site,located 6tPlig E <br /> River Road. Althobgii-it- is true ;that -the n6ige envir-ontnont at .those. <br /> residences.will 'be dominated by truck traJ17Iq '.thv tune periods.bet-Weeh <br /> :truck Passbys may be-doin itiated,,,byaoisd.:assooiatad with-iheasphajt plant <br /> operations. A d6fitiled.noise-OatqW,Assoqlotod With {he: asp <br /> halt plant <br /> operations:9hould.beA'Oveloped-WWA shows the potential nDiseimpapts-at- <br /> all receivers: <br /> 8.16ep distutbaxi6c-durift individual.Utick passages, With windows cl6sod <br /> -4re eoogidered,less thans griff1pjani, The analysis of sleep disturbance ever <br /> Pagp. The Arftefleon National.-56dards lbstitpte <br /> .(ANSI) lias-devel.pped Orocedufos fort-eVal4atin the 061ential for'Sleep <br /> disturbance. The. "procedure.A!4181/A"gA S-12LOJ Part,6 sets;for the <br /> procedures tot,evaluat-Ing,,the p6t'entiaI"for sleep4i8mrban.w. It ostAbl.Mes <br /> a threshold. a-singte went for-which the:A-Weil;hfed-sound exposure <br /> level (ASEL) which occurs wlihin a room at 50 OBA. The AM I <br /> procedure calbufat6s'thd proNjbility:cira-wakehing based:.Upon the interior <br /> mean SEL and the number i of events whieh, occur during the ntgbttfme <br /> hours(I 0:00-p.m.—MO a.m.). The.BAC report:in dicates that tbera:would <br /> only be a 5%probability of awakening. However,the ANSI procedure for <br /> estimating the probability of awakohing calculates a 979/6 probability, of <br /> awakening, baled upon,an exterior SEL of'79 d-BA and,1.82 truck trips <br /> during the nighttime period, as' -indicated in the BAC report. This is <br /> clearly arn4jot difference in the overall analysis. <br /> Project truck.traffic increase in.hourly noise-levels is considered to be less <br /> than significint. Based upon the BAC report, the Proi-cct could typically <br /> 9 <br />