Orange County NC Website
TABLE 3.9 <br /> NOISE LEVELS OF COMMON ACTIVITIES <br /> Noise Level <br /> Common Outdoor Activities (in dBA) Common Indoor Activities <br /> Motorcycle revving up - 110 - Rock Band <br /> Jet Flyover at 1000 ft. - - <br /> - 100 - <br /> Inside Subway Train (NY) <br /> Gas Lawn Mower at 3 ft. - - <br /> - 90 - <br /> Diesel Truck at 50 ft. - - Food Blender at 3 ft. <br /> Noisy Urban Area (Daytime) - 80 - Garbage Disposal at 3 <br /> Shouting at 3 ft. <br /> Gas Lawn Mower at 100 ft. - 70 - Vacuum Cleaner at 3 ft. <br /> Commercial Area - - Normal Speech at 3 ft. <br /> Heavy Traffic at 300 ft. - 60 - <br /> - - Large Business Office <br /> Quiet Urban Daytime - 50 - Dishwasher Next Room <br /> Quiet Urban Nighttime - 40 - Small Theater, Large Con- <br /> ference Room(background) <br /> Quiet Suburban Nighttime - - <br /> - Library <br /> - 30 - <br /> - - Bedroom at Night <br /> Quiet Rural Nighttime - - Concert Hall(background) <br /> - 20 - <br /> - Broadcastand Recording <br /> Studio <br /> - 10 - <br /> - 0 - Threshold of Hearing <br /> Source: Federal Highway Administration, Federal-Aid Highway Program Manual Volume 7, <br /> Chapter 7, Section 3, 1982. <br /> 3-26 <br />