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MAY 24 '96 14:46 FROM DRUID BRASLAU ASSOC <br />PAGE.968 <br />While an exact prediction of sound level from activities within the dome is difficult, the <br />following comments can be made: <br />• No bleachers will be erected in the dome <br />• <br />Therefore any crowd noise would be lower than might be expected in Slimmer with open <br />Y <br />bleachers <br />enerated within the dome may be slightly higher than outdoors because of <br />• While any sound g would be <br />the enclosure, sound outside of the dome will likely be somewhat lower than it <br />outdoors because of the transmission loss of the dome material <br />• No plans for loudspeakers are anticipated within the dome <br />• There <br />fort sound levels are likely to be lower with the dome than without the dome <br />• As <br />noted above, netting should be used to prevent the impact of balls on the dome itself <br />eskers from Richfield ITigh <br />since they could hear loud'sp <br />'the residents expressed concern that, els facility. Richfield High <br />School, this would be a greater problem with the new Holy Ang <br />approximately 2,400 feet south of Holy Angels. The location of speakers and <br />School is located app that those <br />School has not been determined. However, asses -��€ -�•� -. <br />level used at Richfield High <br />e 100 feet from the intended spectators and set to provide 85 dBA at a typical <br />' neighborhood. <br />speakers axe Angels nelg <br />tor, a sound level as high as 57 dBA might be perceived in the Holy Ang <br />spew this sound would be clearly audible. If those <br />With a background sound level of 40 to 45 dBA, <br />speilcers were placed only 50 feet from the audience, the level would fall to 51 dBA. If the <br />�d <br />speakers were properly directed at the spectators, the level could fall to 31 dBA or lower <br />may not be audible at that distance. <br />careful <br />of treatment of loud speakers discussed above, it can be seen that adjacent <br />Based upon the type to control the level at the ad) <br />Angels will be necessary to the residences. By <br />design of sound system at Holy Ang approximately 350 feet from <br />residential neighborhood. The audience will be <br />• RECEIVED <br />Academy of the Holy Angels - Noise Assessment <br />CITY OF LINO LAKES <br />rage 6 <br />