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Enbridge Energy, LP Hoover& Keith, Inc. <br /> Waterloo Pump Station — Noise Impact Analysis RN 3083/JN 4796 <br /> APPENDIX C—Acoustical Terminology (10/10/14) <br /> SOUND LEVELS FOR TYPICAL ACTIVITIES REFERENCE AND COMMUNITY RESPONSES <br /> Subjective Human Home and Industrial MIA Community and Traffic Reference Community <br /> Response and (Indoor Noise) Scale (Outdoor Noise) Loudness Reaction To <br /> Conversation (Level) _ Outdoor Noise <br /> —''140— Aircraft Carrier <br /> Threshold of Pain Military Jet Aircraft <br /> —130— " <br /> Large Siren at 100 Ft. <br /> Jet Takeoff at 200 Ft. 16 Times <br /> Rock Band(Max.) --'120— as Loud <br /> Threshold of Thunderstorm Activity <br /> Discomfort Discotheque(Max.) 8 Times <br /> —110— Elevated Train as Loud <br /> Symphonic Music(Max.) <br /> Maximum Vocal Effort Auto Horn at 5 Ft. 4 Times <br /> Industrial Plant —100— as Loud <br /> Very Loud Compacting Trash Truck <br /> Newspaper Printing Rm. 2 Times <br /> Shouting in Ear — 90-- Heavy Truck at 25 Ft. as Loud Vigorous Action <br /> Food Blender <br /> and Law Suits <br /> Symphonic Music(Typ.) Motorcycle at 25 Ft. Reference <br /> Shouting --",SO-- Loudness Threats of <br /> Garbage Disposal Small Truck at 25 Ft. Legal Action <br /> Very Annoying Alarm Clock Heavy Traffic at 50 Ft. Appeals to Officials <br /> -- 70-- 1/2 as Loud Widespread <br /> Moderately Loud Vacuum Cleaner Avg.Traffic at 100 Ft. Complaints <br /> Electric Typewriter <br /> Normal Conversation -- 60-- 1/4 as Loud Sporadic Complaints <br /> Air Conditioner at 20 Ft. <br /> Light Traffic at 100 Ft. No Reaction, <br /> Typical Office — 50-- 1/8 as Loud Although Noise <br /> Quiet <br /> is Noticeable <br /> Living Room Typical Suburban Area <br /> Bedroom — 40-- <br /> Birdsong <br /> Very Quiet Library <br /> - 30-- <br /> Soft Whisper Broadcasting Studio Rural Area <br /> Just Audible <br /> - 20-- <br /> Threshold <br /> 10-- of Hearing <br /> Hoover&Keith Inc.(Consultants In Acouetics) <br /> 11391 Meadowglen,Suite 0 <br /> Houston,Texas 77082 — 0— <br /> End of Report <br /> C-4 <br />