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R.J. Gordon Construction LLSI Project 2211 • <br />October 30, 2015 Page 2 of 5 <br />Survey Times and Climatic Conditions <br />DATE <br />TIME OF SURVEY <br />CLIMATIC CONDITIONS <br />August 2, 2015 <br />14:00 - 15:30 setup only <br />70-80 degrees <br />August 3, 2015 <br />06:00 - 12:00 - 12:30 - 14:30 <br />80 degrees <br />August 4, 2015 <br />05:30 - 13:30 <br />80 degrees <br />September 9, 2015 <br />07:00 - 12:00 - 12:30 - 16:45 <br />100+ degrees, Sunny <br />September 10, 2015 <br />07:00 - 12:00 - 12:30 - 15:30 <br />100+ degrees, Sunny <br />September 11, 2015 <br />07:00 - 12:00 - 12:30 - 16:30 <br />90+ degrees, Cloudy <br />September 15, 2015 <br />07:00 - 12:00 - 12:30 - 17:00 <br />90+ degrees, Sunny <br />September 16, 2015 <br />1 06:00 - 10:00 <br />90+ degrees, Sunny <br />I. RESULTS <br />No leaks were found during the survey conducted on the bare geomembrane or during the <br />surveys conducted on the operations soil layer of Area 2A. Figure 1. shows the dates and area <br />surveyed for the bare geomembrane survey and Figure 2. shows the dates and area surveyed for the <br />soil survey. The leak location survey equipment was tested for proper operation and functionality <br />using an artificial leak for each leak location method. For the bare geomembrane survey, the end of <br />an 18 AWG insulated wire with the other end of the wire connected to earth ground is the artificial <br />leak. Proper equipment operation and functionality are demonstrated if the end of the wire is <br />detected when the squeegee sensor is passed over it. The leak sensitivity test were conducted at the <br />beginning and end of each day and the results of the test were documented. <br />For a soil -covered survey, a 0.25 -inch diameter artificial leak was buried in the operations <br />soil layer and leak location survey lines were run along both sides of the artificial leak. Leak <br />location survey measurements were collected to determine the maximum distance that the leak could <br />be reliably detected. The leak detection distance was approximately 3.3 feet. The survey data was <br />taken on 5 -foot spacings, which means measurements were made within 2.5 feet of every point <br />above the geomembrane. The leak sensitivity test were conducted at the beginning and end of each <br />day and the results of the test were documented. Figure 3 shows a plot of the artificial leak data for <br />the soil survey. <br />11 <br />