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Staff research / analysis <br />• Sampling of decibel levels of AC units <br />commonly installed in the county <br />• Comparison of County regulations to other <br />jurisdictions <br />• Consideration of site-specific <br />characteristics <br />Sampling of AC unit decibel levels <br />Staff's findings: <br />• AC units aregenerally in compliance with County's <br />residential decibel thresholds in "standard" subdivisions <br />with side yards of 10' or more) <br />• Decibel levels drop '/z to 1 decibel each foot from the <br />noise source <br />• Decibel readings are consistently and substantially lower <br />than the manufacturer's decibel rating of the units <br />169.2 <br />