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suburban/urban ambient sound levels and therefore could cause a temporary increase above the <br />threshold discussed above. For reference, typical suburban/urban background sound levels are <br />commonly on the order of 45 to 55 dBA during daytime hours and lower during nighttime hours.20 <br />Because sound pressure levels from construction of a new hotel, which was needed due to a STR ban, <br />have the potential to cause a temporary increase above the noise level threshold, more analysis is <br />needed to evaluate specific impacts and potential mitigation. While construction may be exempt from <br />the noise ordinance during daytime hours, the table below shows that the construction could have a <br />significant noise impact on the community. <br />Furthermore, if any nighttime construction activity is needed for the hotel, the noise levels below show <br />that threshold for nighttime work in the noise ordinance would be exceeded. <br />Table 7. Noise Impacts from Construction Activity <br />Avg. <br />Usage <br />Equip <br />Lmax <br />Acoustical <br />Equip <br />Total <br />Total <br />Total <br />Construction <br />Size, <br />SPL @ <br />SPL @ <br />SPL @ <br />SPL @ <br />Equipment Type <br />Qty <br />Hours <br />SPL @ <br />Use <br />Phase <br />per <br />Hp <br />50 ft <br />Factor <br />50 ft <br />dBA <br />50 ft <br />dBA <br />50 ft <br />dBA <br />500 ft <br />dBA <br />Day <br />dBA <br />Rubber Tired Dozers <br />3 <br />8 <br />367 <br />85 <br />40% <br />81 <br />86 <br />Site <br />Tractors/Loaders/Bac <br />4 <br />8 <br />84 <br />84 <br />40% <br />80 <br />86 <br />Preparation <br />89 <br />79 <br />khoes <br />Excavators <br />2 <br />8 <br />36 <br />85 <br />40% <br />81 <br />84 <br />Graders <br />1 <br />8 <br />148 <br />85 <br />40% <br />81 <br />81 <br />Rubber Tired Dozers <br />1 <br />8 <br />367 <br />85 <br />40% <br />81 <br />81 <br />Grading <br />90 <br />80 <br />Scrapers <br />2 <br />8 <br />423 <br />85 <br />40% <br />81 <br />84 <br />Tractors/Loaders/Bac <br />2 <br />8 <br />84 <br />84 <br />40% <br />80 <br />83 <br />khoes <br />Cranes <br />1 <br />7 <br />367 <br />83 <br />16% <br />75 <br />75 <br />Forklifts <br />3 <br />8 <br />82 <br />75 <br />40% <br />71 <br />76 <br />Generator Sets <br />1 <br />8 <br />14 <br />82 <br />50% <br />79 <br />79 <br />Building <br />87 <br />77 <br />Tractors/Loaders/Bac <br />Construction <br />3 <br />7 <br />84 <br />84 <br />40% <br />80 <br />85 <br />khoes <br />Welders <br />1 <br />8 <br />46 <br />74 <br />40% <br />70 <br />70 <br />Pavers <br />2 <br />8 <br />81 <br />85 <br />50% <br />82 <br />85 <br />Paving Equipment <br />2 <br />6 <br />89 <br />85 <br />50% <br />82 <br />85 <br />Paving <br />89 <br />79 <br />Rollers <br />2 <br />6 <br />36 <br />85 <br />20% <br />78 <br />81 <br />20 U.S. Environmental Protection Agency, Community Noise, December 31, 1971. <br />14/14 <br />