Laserfiche WebLink
Grand Avenue Widening Project Environmental Impact Report Section 3.0 <br />TABLE 3.6-1 <br />TYPICAL A -WEIGHTED NOISE LEVELS <br />dB(A) <br />OVER-ALL LEVEL <br />COMMUNITY <br />HOME OR <br />LOUDNESS <br />Sound Pressure Level <br />(Outdoor) <br />INDUSTRY <br />Human. Judgement <br />re. To 0.0002 <br />of Different Sound <br />Microbars <br />Levels <br />130 <br />Military Jet Aircraft Take- <br />Oxygen Torch (121) <br />120 dB(A) 32 Times <br />UNCOMFORTABLY <br />Off With After From <br />as Loud <br />LOUD <br />Aircraft Carrier @ 50 Ft. <br />(130 <br />120 <br />Turbo -Fan Aircraft @ <br />Riveting Machine <br />110 dB(A) 16 Times <br />110 <br />Take -Off @ 200 Ft. (90) <br />(110) <br />as Loud <br />Rock -N -Roll Band <br />108-114 <br />100 <br />VERY <br />Jet Flyover @ 1000 Ft. <br />100 dB(A) 8 Times <br />LOUD <br />(103) <br />as Loud <br />Boeing 707. DC -8 @ 6080 <br />Ft. Before Landing (106) <br />Bell J2A Helicopter @ 100 <br />Ft. (100) <br />90 <br />Power Mower (96) <br />Newspaper Press <br />90 dB(A) 4 Times as <br />Boeing 737, DC -9 @ 6080 <br />(97) <br />Loud <br />Ft. Before Landing (97) <br />Motorcycle @ 25 Ft.. (90) <br />80 <br />Car Wash @ 20 Ft. (89) <br />Food Blender (88) <br />80 dB(A) 2 Times as <br />Prop. Airplane Flyover @ <br />Milling Machine <br />Loud <br />1000 Ft. (88) <br />(85) <br />Diesel Track, 40 MPH @ <br />Garbage Disposal <br />50 Ft. (84) <br />(80) <br />Diesel Train, 45 MPH @ <br />100 Ft. 83 <br />70 <br />MODERATELY <br />High Urban Ambient Sound <br />Living Room Music <br />70 dB(A) 32 <br />LOUD <br />(80) <br />(76) <br />Passenger Car, 65 MPH @ <br />TV -Audio, Vacuum <br />25 Ft. (77) <br />Cleaner <br />Freeway @ 50 Ft. From <br />Pavement edge, 10 AM (76 <br />t 6) <br />60 <br />Air Conditioning Unit @ <br />Cash Register @ 10 <br />60 dB(A) %z as Loud <br />100 Ft. (60) <br />ft. (65-70) <br />Electric Typewriter <br />@ 10 Ft. (64) <br />Dishwasher (Rinse) <br />@ 10 Ft. (60) <br />Conversation (60) <br />50 <br />QUIET <br />Large Transformers @ 100 <br />50 dB(A) '/4 as <br />Ft. (50) <br />1 <br />1 Loud <br />SOURCE: Reproduced from Melville C. Branch and R. Dale Boland, Outdoor Noise in the Metropolitan Environment, <br />Published by the City of Los Angeles, 1970. <br />F: IPROJ-ENVIGrand eirWew Text - Grand&ction 3 SplitlSection 3.6.doc Page 3.6-2 <br />