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r 4 <br />t; <br />LJUm. H. O. Kroll Q flssociotes, Inc. <br />CnglnMis ConsuUng In Acoustics <br />SeniDostMMflood • Minrartonba AAwitSOto 55345 <br />Phono 9S8-934-9494 • PAX 958*934-1300 <br />Orono Lkiuors (no. dbs Narrows Saloon S Sept. 200S <br />posoxse <br />Navarro, MN 5S392 <br />Fax 768^26-3168 <br />Qraatinfla: <br />Wa did, in Itaaping with your havirtg aakad that wa do to. makt a noise level monitoring <br />tost in tha straat named Kelly Av aitd in front of the driveway of Nr. 2S07 pointed out to us <br />by Cindy aa tha place from whanea complainta had coma, between the hours of 2230 and <br />2346 (10:80 pm and 11:46 pm) of 27 August, 2006 and now toll you of tha raaults of the <br />not ena^rouMorrg teat. <br />Looation <br />2807 Kelly Av <br />Noise tavala (dBA) <br />U) 49.8 Lto 88.6 <br />The State Noise Reguiadona eall for tha noiaa tavala to be maaaurad in a atatiaticai way so <br />Lw maana that tha noiaa laval. as measured at tha test points was 49.8 dIA 60% of tha <br />time. That maaru to say that 80% of the time, it was louder than 49.5 and 50% of the <br />time, it was quieter than 49.8 dBA. Lie means that tan percent of the time, it was louder <br />th^in 88.8 arrd ninety percent of tha tinta. It was quieter than 53.S dBA. <br />I have not scan tha Noiaa Regulations that may apply to your exset iecatlon but the values <br />sot forth above, if taken to fellow tha Mirmeepeiia and Minnesota Stats Ragulstiona would <br />fbR witMn such ragulationa. For axampla: <br />*: • <br />Oevtime iOTOOr- 22pOI‘ * • Niohttime (2200-0700) <br />Lm '-Lis' ' U Lie <br />Rooidontis) Areas 60 -* 65' ' ' > 80 66 <br />Commaroial Areas 68 70 68 70 <br />Than, tee, there are diffaront kinds of deeibeh (dB) and the A or dBA kind la the one moat <br />often used In tha U.8. for atab'ng ce'mMoA'no^a lavala. <br />As a comment: At that thna of night, wo could hear atroat traffle aa tha loudaat sources of <br />noiaa but a nearby cem^reiei buiidbrg did, with its air conditioner or soma similar machine <br />noiaa level at a ataady rata, was tha steady background rwiaa. The weather conditiona <br />were good, mild summer temparstura with light and variable winds. <br />Wa uaad precision tost apporatue, ali earofuiy ealferotad with a rafaranca aeuree tre ceabla <br />in socuracy to tha NIST (National Inatituta of Bcianca and Tachnetogy. Flaosa cell if <br />quaatiena arise. <br />Very truly yours. <br />WmK/lw Wm. H. 0. Kroll, P.E. <br />Q