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SUBJECTIVE <br /> EXAMPLES DECIBELS (dB)'" EVALUATIONS <br /> Near jet engine <br /> 140 <br /> Threshold of pain T <br /> W <br /> Q 130 <br /> N O <br /> N <br /> s a Deafening <br /> 120 ... ........................................ 32 <br /> -O o <br /> Rock band m te <br /> Accelerating motorcycle a few feet away N'r — 110 -------------------------------------------- 16 <br /> o � _ <br /> a� <br /> x y — <br /> a i, — <br /> Noisy urban street/heavy city traffic o e 100 <br /> .......................................... 8 <br /> Gas lawn mower at 3 feet E <br /> o _ Very Loud ° <br /> Garbage disposal at 3 feet v ° — <br /> Vacuum cleaner at 3 feet — ' <br /> 80 ...... ........................................ 2 a <br /> Busy restaurant _ <br /> Moderately Loud <br /> Near freeway auto traffic <br /> 70 ...... ........................................ 1 <br /> Window air conditioner at 3 feet — <br /> Business office Range of <br /> Speechb0 --�--- ----.---.--.-.--..--.---..---.---..-.-.- 112 <br /> - Quiet <br /> 30 ------ ---------------------------------------- 1/4 <br /> Soft whisper at 5 feet _ <br /> Quiet urban nighttime <br /> 40 .......... a-i. .............................. 118 <br /> Faint <br /> 30 <br /> Quiet rural nighttime — <br /> 20 <br /> 10 Very Faint <br /> Human breathing <br /> Threshold of audibility <br /> 0 <br /> *dB are"average"values as measured on the A-scale of a sound-level meter. <br /> From Concepts in Architectural Acoustics(M.David Egan,McGraw Hill, 1972)and U.S.Department of Housing and Urban Development, <br /> Office of Community Planning and Development,The Noise Guidebook. <br /> Source:Data compiled by EDAW in 2005 <br /> Noise Levels Generated by Common Sources Exhibit 4.4-1 <br /> Manteca WQCF and Collection System Master Plans EIR EDAW <br /> City of Manteca 4.4-3 Noise <br />