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SaJvtd tt ve(5 <br />Figure 1. Typical Sound Levels <br />Rivervalley Sport <br />Exhibit E <br />SOURCE OF SOUND <br />SOUND LEVEL PERCIEVED <br />RELATIVE <br />SOUND <br />dB (A) <br />LOUDNESS <br />ENERGY <br />Threshold of Pain <br />Military Jet <br />Take -off @ 50 ft. <br />130 <br />126 <br />10,000.000 <br />Turbo -fan Aircraft <br />Take -off Q 200 tt. <br />120 <br />64 <br />1,000,000 <br />Dearening <br />Rock Band <br />) <br />110 <br />32 <br />100,000 <br />r <br />B-737, DC -9-10 <br />100 A 16 --10,000— <br />@ 300 ft. on approach <br />Very Loud <br />F—Motorcycle @ 25 ft. <br />90 <br />8 <br />1,000 <br />r <br />Busv Street <br />80 <br />4--100— <br />100 <br />L <br />Interior of <br />70 <br />2 <br />10 <br />Department Store <br />r <br />Ordinary Conversation <br />A <br />Q 3 ft. <br />60 <br />1 <br />1 <br />Moderate <br />Quiet Auto D_ <br />SO <br />1/2 <br />.1 <br />@ Low SpeedCity <br />Dwelling - Indoors <br />— 40Country <br />+1/4 <br />Dwelling - <br />Indoors <br />308 <br />.001 <br />r <br />Rustle or Leaves <br />20 <br />1/16 <br />.001 <br />Very Faint <br />10 <br />1/32 <br />.0001 <br />0 <br />--1/64 <br />.00001 <br />Threshold of Hearing <br />Source: Cabman A—W., Inc.. Mash Plan Update and Na E.M.— hhq, C:va,r. Pm[ Columbus Im... fl ... I Airport. <br />tion before adapting any of the models provided here. <br />There is one other issue that a community that <br />wants to use these models will need to address. One <br />of the most serious problems in establishing a noise <br />overlay zone is that it may need to be incorporated in <br />more than one jurisdiction. Airport noise effects are <br />usually regional in nature, as are the economic <br />development opportunities presented by the airport. <br />There may be great pressure on individual communi- <br />ties to not "buy into" the zoning because to do so may <br />either limit the types of uses possible in the overlay <br />area or require the retrofitting of existin usesand <br />new types of construction standards for new de� elop- <br />ment. In all, the zoning may mean that the airport <br />environs might not be built out to its maximum <br />potential or that it might be more costly to do so. <br />This report, based on a document produced by the <br />Mid -Ohio Regional Planning Commission (MORPC) <br />under contract to Port Columbus International <br />Airport, was undertaken due to the fact that the <br />operations of Port Columbus were affecting the <br />communities of Bexley, Columbus, Gahanna, <br />Reynoldsburg, Whitehall, Jackson Township, and <br />Franklin County. Those communities were able to <br />work together through NIORPC to issue the docu- <br />ment and will continue to have to work together to <br />\ <br />3 <br />