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quarter of Section 9, T9N, R67W) and, because of the greater well depth, the zone where most of <br />the drilling would occur. <br />As shown on Plate 1, three sites were selected to perform the noise survey. Location No. 1 is <br />along the proposed access road to the central processing facility; Location No. 2 is near the <br />proposed central processing facility site; and Location No. 3 is situated near the intersection of <br />the two most traveled roads in the area, County Road 17 and County Road 100. Site selection <br />was constrained to areas where access was permissible by the land owner or occupant. The three <br />sites were in areas where the monitors would be accessible, secure and relatively free from <br />cultural noise that would skew the measured dB values. Traffic noise would skew the data if the <br />instruments were placed too close to any roadway. The ambient noise north, south, east and west <br />of the site was about the same as long as the monitors were located several hundred feet from any <br />roadway or residence. In order to obtain a good estimate of the ambient or existing noise <br />environment, it is necessary to take measurements of sufficient duration so that the environment <br />can be observed on an hour by hour basis so that any effects such as high winds, precipitation or <br />wildlife can be excluded from the measured data. For this reason it was decided to run the three <br />noise monitors continuously for two weeks and record the average noise level for each and every <br />hourly increment during the entire period. <br />The noise monitoring equipment used consisted of a Quest Model 1900 noise monitor. Noise <br />monitoring occurred continuously over an approximate two-week period. Each noise monitor <br />was set to measure the energy equivalent level (Leq) for every hour of the measurement period. <br />The Leq value is different than the average value because the Leq is based upon the mean square <br />average of the acoustic energy rather than the simple numerical average of the sound pressure <br />level. The Leq value is always equal to or greater than the average value. The Leq results will be <br />presented along with statistical exceedance levels at each of the three noise sites. No analysis <br />was required. <br />April 2009 16 Site Characterization Plan