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APPROVED 5/10/2010 OC Board of Adjustment – 3/8/2010 Page 28 of 86 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Rob Maitland: I am amazed; it is like the earthquake scale? Noral D. Stewart: The earthquake scale and the Richter scale are very similar to the scales used for sound. It is a ‘l’ scale, that is a count of a bell Richter scale is based on the sound of pure bells so you hear 7.4 that is like 7.4 decibels that is a different thing, they are measuring the motion of the earth rather than sound. Rob Maitland: Just so we have got a baseline, 80 is shotgun level, 72-75 is one to two dogs barking 50 feet and you estimate that it will be 40 decibels worst case scenario coming out of this sound facility? Noral D. Stewart: Yes. At the boundary. Rob Maitland: If the neighbors dogs were outside, don’t dogs hear better than humans, will they be able to hear it? Noral D. Stewart: They hear higher frequencies that we do. The smaller animals can hear higher frequencies than bigger animals. Rob Maitland: If they hear 20 dogs inside these sound enclosed things, couldn’t that get them to start barking too? Noral D. Stewart: They might hear them. They won’t be barking at one time. When you get down to 40, your normal sounds in the community will be louder than that typically. Cars going by, etc. Rob Maitland: How loud are normal highways? Noral D. Stewart: We just said an individual car at 200 feet is around 50 dbs and 400 feet you get down to 40 dbs. Rob Maitland: It would be about the same as a highway. Noral D. Stewart: Fifty to sixty is probably what you are going to see in most of these residential areas if one car goes by at 45-55 miles per hour. Rob Maitland: When you were doing your study, you were trying to determine what would be acceptable for the neighborhood? Noral D. Stewart: Yes. I have an opinion on the acceptability? Rob Maitland: Did you talk to any of the neighbors? Noral D. Stewart: No. I did not. Rob Maitland: So you haven’t talk to anybody? Noral D. Stewart: No. I have not. Rob Maitland: Your plan looks impressive. What steps are there that the builders comply with the plan? Do you come out and test it afterwards. Noral D. Stewart: If someone were to ask me to do that I could. Rob Maitland: That is not a requirement? Noral D. Stewart: That is not something that is part of my contract right now. If someone would like to impose a requirement I would do it but right now it has not been imposed so it is not a part of the plan.