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<br />IKI.Avsl <br /> <br />Parking Systems Inc. <br /> <br />Report of Sound Meter Measurements <br /> <br />Date: <br /> <br />December 8, 2006 <br /> <br />Location: <br /> <br />Fine Arts Project, 2110 Haste St., Berkeley, CA <br /> <br />Lift Type: <br /> <br />P310 Manual Doors <br /> <br />Sound Meter Data: <br /> <br />Model 407727, Digital Sound Level Meter (Extech Instruments) <br />Accuracy: :I:: 2dB @ 94dB sound level <br /> <br />Sound Meter Settings: <br /> <br />"A" Weighting, "Slow" Response <br /> <br />Measurements: <br /> <br />Performed by Norman W. Brudigam, PE, Civil Engineer <br /> <br />Test No. Test Conditions Sound <br /> Levels <br />I Background sound levels inside parking garage due to fluorescent 43 to 48dB <br /> lights and some traffic outside the garage door 80 ft away from test <br /> location (onen QTiIl door). <br />2 Lowering of a lower platform (motor does not operate). Reading 50 to 61dB <br /> taken 3 feet from moving platform. Lowering time approximately 20 <br /> seconds. <br />3 Raising of an upper platform (motor operates). Reading taken 3 feet 62 to 67 dB <br /> from moving olatform. Raising time aooroximatelv 20 seconds. <br />4 Lateral movement of 9 middle level platforms at once. Reading 63 to 69dB <br /> taken 3 feet from machine at middle of platform movements. <br /> Movement time aooroximatelv 20 seconds. <br /> <br />Typical A Weighted Sound Level Data <br /> <br /> <br />135dB <br />120dB <br />llOdB <br />100dB <br />90dB <br />80dB <br />72dB <br /> <br /> <br />68dB <br />62dB <br />58dB <br />48dB <br />42dB <br />32dB <br />24dB <br /> <br />20B.doc <br /> <br />3652 Chestnut St., Suite A, Lafayette, CA 94549, 925.284.2092 Fax: 925.284.3365 <br />E~..E64 <br />