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KLAVS <br />Parking Systems Inc. <br />Report of Sound Meter Measurements <br />Date: December 8, 2006 <br />Location: Fine Arts Project, 2110 Haste St., Berkeley, CA <br />Lift Type: P310 Manual Doors <br />Sound Meter Data: Mode1407727, Digital Sound Level Meter (Extech Instruments) <br />Accuracy: + 2dB @ 94dB sound level <br />Sound Meter Settings: "A" Weighting, "Slow" Response <br />Measurements: Performed by Norman W. Brudigam, PE, Civil Engineer <br />Test No. Test Conditions Sound <br /> Levels <br />1 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 o en ill 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 movin latform. Raisin time a roximatel 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 a roximatel 20 seconds. <br />Typical A Weighted Sound Level Data <br />SOHP Siren 100' 135dB S eech 1' 68dB <br />Jet Takeoff 200') 120dB Lar e Store 62dB <br />Rivetin machine 110dB Lar e office 58dB <br />Chain Saw 100dB Residence 48dB <br />Subwa 20' 90dB Ni ht residential area 42dB <br />Frei ht train 100' 80dB Whis er 5' 32dB <br />Vacuum cleaner 10' 72dB Sound studio 24dB <br />2013.doc <br />3652 Chestnut St., Suite A, Lafayette, CA 94549, 925.284.2092 Fax: 925.284.3365 <br />E~4 <br />