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Memorandum to: Thomas Zappia Confidential Attorney/Client <br />Zappia & LeVahn Privileged Information <br />October 17, 2008 <br />Page 4 <br />MEASUREMENT METHODOLOGY <br />The noise measurements were made using a Quest brand model 300 automated data logging <br />sound level meter. This type of meter accumulates average noise level readings every minute in <br />its memory. The stored data is used to calculate the Llo and LS0 for the measurement period. <br />The measurement methodology followed that specified in Minnesota Rules 7030.0060. The <br />meter was mounted on a tripod positioned at the measurement location. A windscreen provided <br />by the meter manufacturer was placed over the microphone for the measurements. <br />The meter was calibrated according to the manufacturer instructions at the beginning and end of <br />the measurements. The meter calibration was stable throughout the measurements. <br />• <br />11 <br />T;U1980U16VSound Survey Report Memo.doo <br />