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least 20 dB(A); <br />and <br />(2) the building has year-round climate control; <br />(3) the building has no areas or accommodations <br />contiguous to it that are intended for outdoor activities. <br />7010,0060 MEASUREMENT METHODOLOGY. <br />Subpart 1. Measurement location. Measurement of sound <br />must be made at or within the receiver's property line at the <br />point of human activity which is nearest to the noise source. <br />Subp. 2. Equipment specifications. All sound level <br />measuring devices must be certified to meet Type I, II, or S <br />specifications under American National Standard Institute <br />51.4•1983. <br />Subp. 3. Calibration. All sound level measuring devices <br />must, at a minimum, be recertified or cross-referenced according <br />to American National Standard Institute S1.4-1983 annually. The <br />equipment must be externally field calibrated before and after <br />monitoring using a calibration devire of known frequency a;id <br />sound pressure level. <br />Subp. 4. Measurement procedures. The following procedures <br />must be used to obtain representative sound level measurements: <br />A. Measurements must be made between three and five <br />feet off the ground or surface and away from neteral or manmade <br />structures which would diminish the sound level. <br />B. Measurements must be made using the A -weighting <br />and fast response characteristics of the sound measuring device <br />as specified in American National Standard Institute S1.4-1983. <br />A <br />