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Nov. 15 al 06:43p p. <br />01./63 6 <br />GORDONIE ASSOCIATES <br />ACOUSTICAL and ENERGY ENGINEERS <br />S U M M A R Y <br />The sound levels of the Festival Hall have been treasured <br />from. 1:00 A.M. to 2:00 A.M., on November 1.1, 2001 along Third <br />Street and compared to the City's Noise Drdinance as a design <br />guideline for the. residential site adjacent to the Hall after the <br />mitigation measures had been applied to the Hall. The residual <br />noise would be than From everit,s occaarring on the street and <br />sidewalk. The noise values taken after the music performance ended <br />at 1: 33 A.M. were used for the evaluation. The game values were <br />assumed to exist on the parking lot behind the Old City Rall, which <br />was used by patrons. <br />The results indicate that if a residential project is <br />constructed can the adjacent site, substantial noise reduction <br />features will be required in the rosidential structure. `The <br />Mitigation measures are as follows: <br />Rooms Facing Third Street at the Second. Level and Above <br />and facing the Ord City Hall Parking Lot will require windows rated <br />STC 38, or higher, and the exterior wall assemblies ,should have the <br />interior drywall mcunted on resilient. channels. <br />Roams Facing Third Street at First Level will require <br />windows rated a minimum STC 40, the oxtexi.or wall, assemblies should <br />have the inte-cior drywall mounted on res,ilien,t channel, and minimum <br />STC 38 rated doors. Note, these conditions may also apply- at the <br />first level facing the Old City Parking Lot depending on the design <br />of the property lane wall. <br />The items listed above may also need to be applied along <br />Spurgeon and along- the common interfaces with. the Festival Hall. <br />One possible additional mitigation is to remove the <br />pickup and drop-off location in front of the HaI2 . This would <br />require creating a loading zone that would displace about three <br />parking spacer. This change would remove one of the activity areas <br />in front of the residential building. <br />1521 East Seventeen## Street, Suite K Santa Ana, California 92705-8518 <br />Phone V1 4) 835-0249 FAX tit 4) 835-i 9 a7 <br />9 <br />