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Mr. Joseph Lipka <br />October 10, 2017 <br />• Page 2 <br />• For probes 20 feet deep or less, turn on sample pump, observe and record methane, <br />oxygen, and carbon dioxide gas concentrations, when readings have stabilized for 30 <br />seconds. <br />• For probes more than 20 feet deep, turn on sample pump, extract a minimum of one <br />probe volume, observed and record methane, oxygen, and carbon dioxide gas <br />concentrations, when readings have stabilized for 30 seconds. <br />• Close test valve, disconnect sample instruments and secure sample location. <br />GAS MONITORING WELL TESTING <br />In accordance with the approved testing schedule, all perimeter monitoring probes are to be tested <br />at a minimum, on a quarterly basis. On September 30, 2017, all accessible perimeter Gas <br />Monitoring Probes defined as Nos. GP -O 1 A, GP -02A, GP -03 and GP -04A through GP -08A were <br />tested for the presence of LFG. Test results (Table 1) indicated that all monitoring probes tested <br />exhibited methane gas concentrations below the LEL (5 percent by volume) or no methane gas was <br />detected. These results indicated that the subject site perimeter probes are in compliance with the <br />requirements of Title 27 CCR Article 6. <br />During monitoring on September 30, 2017, SCS personnel observed damage, by others, to the <br />• monument for Perimeter Monitoring Probe No. GP -04A which is in need of replacement. In <br />addition, Perimeter Monitoring Probe No. GP -08A is damaged and needs to be replaced. SCS, at <br />the direction of the client, will perform necessary repairs before the next quarterly monitoring due <br />by the end of December 2017. <br />SCS is scheduled to perform the fourth quarter monitoring of 2017 (October through December) of <br />the monitoring probes by the end of the month of December 2017. <br />STANDARD PROVISIONS <br />This report addresses conditions at the subject site during the test dates only. Accordingly, we <br />assume no responsibility for any changes that may occur subsequent to our monitoring which <br />could affect the quantity of LFG at the subject site or adjacent properties. <br />0 <br />