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APPROVED 5/10/2010 OC Board of Adjustment – 3/8/2010 Page 29 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: After that we would know whether the plan is working or not? Noral D. Stewart: I have confidence it in. Rob Maitland: If they build it in accordance with your recommendations? Noral D. Stewart: With the recommendations. Rob Maitland: Who makes sure they build it? Noral D. Stewart: I am not sure Rob Maitland: Did you consider adding a sealed attic to this facility? Noral D. Stewart: No. We really did not consider that. Rob Maitland: How come? Noral D. Stewart: We had gotten it down to where it was quiet enough and I am not aware if even a sealed attic is even permitted by code. Rob Maitland: A sealed attic would minimize the sound even more? Noral D. Stewart: Slightly more. Rob Maitland: No further questions. Jeffrey Schmitt: Questions by the board. Tom Brown: How did you arrive at your acoustical analysis, was it all numeric calculations, did you do any measurements or did you do previous measurements? Noral D. Stewart: We have had previous experience with kennels. This is not an unusual or unique problem. Kennels in neighborhoods are a problem we have come across in the past so we have experience as to what sound levels are inside kennels and have measured dogs inside kennels before and have some idea of what we are dealing with. We are aware of the acoustical properties of the materials being used for the ceiling, roof, walls, windows, we have information those are common materials and methodologies that we know how to predict, sound blocking ability of these so it is a fairly straight forward matter to do this kind of analysis we do for various sources and various kinds of building noise sources and buildings all the time. James Carter: You mentioned earlier about sound absorbed ceiling and thermal windows, will that have impact on the dog’s sounds with those two things being involved. Noral D. Stewart: The sound absorptive ceiling will help reduce the sound level within the kennel since it is similar to the ceiling we have here. When the sound hits it, it doesn’t just all reflect but a significant portion of it is absorbed and not reflected. It helps reduce the sound level in the kennel so you have less sound that comes out. The windows, yes. We looked at the window design to assure that we significantly reduce the sound level. We also know, for instance, that a dog’s bark is concentrated in a certain frequency or pitch range so we try to optimize the windows and construction to make sure we block sound in that frequency range where the dog bark is concentrated. David Blankfard: You said you had done work with kennels, has it been retrofit work or new construction? Noral D. Stewart: Both. We do get called in where there are existing problems sometimes.