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• • <br /> C. Kell-Smith & Associates, Inc. 1200 Bayhill Drive, Suite 224 <br /> GOO 00 OG ©© San Bruno, CA 94066 <br /> 650 -827 -3900 phone <br /> 650 -827 -3909 fax <br /> www.kell- smith.com <br /> Letter of Transmittal <br /> To: William Schock <br /> City of San Leandro <br /> From: Mary Knuckles <br /> C.Kell -Smith & Associates <br /> Date: August 23, 2006 <br /> Re: San Leandro Residential Aircraft Noise Insulation Program, Intro Phase <br /> William, <br /> Per your request, this is a brief summary on the pre- and post - construction noise tests on two of the Introductory <br /> Phase homes as submitted by Vince Mestre, Mestre Greve. <br /> Pre - Construction and Post - Construction Noise Measurement Results <br /> Address Room OILR, dBA Noise Level <br /> Pre Post Reduction, dBA <br /> 12960 Neptune Living Room 20.3 27.3 7.0 <br /> Bedroom 2 24.5 31.5 7.0 <br /> 2092 Laura Living Room 23.6 25.8 2.2 <br /> Bedroom 1 22.5 28.2 5.7 <br /> 1365 Marybelle Living Room 19.2 withdrew - <br /> Bedroom 3 15.1 withdrew - <br /> Bedroom 1 19.2 withdrew - <br /> 2029 Marina Ct Bedroom 2 19.1 withdrew - <br /> Family Room Slider 19.1 withdrew - <br /> Family Room Window 20.8 withdrew - <br /> OILR, Outdoor Indoor Level Reduction, is the difference between outside and indoor noise levels. <br /> Measurements were made at four homes prior to sound insulation treatment. Measurements were made <br /> after sound insulation. Two of the four homes measured prior to sound insulation withdrew from the <br /> program. The two homes that participated showed an average improvement of 5.5 dBA with some rooms <br /> better and some room poorer. <br /> Aircraft Noise Insulation Project • Program Management • Administrative Services <br />