ARCHIVED REPORTS_2006_20 - Laserfiche WebLink

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Ms. Christina Carbajal April, 24, 2006 Page 4 SCS will continue to monitor and adjust all LFG extraction wells to minimize the amount of overpull while maintaining operational criteria. Also, on March 28,2006, SCS performed initial monitoring/adjustment to, recently installed by others,LFG Extraction.Well.Nos. FOFU-0304- Well, FOFU-04-06 through FOFU-04-12, FOFU- HCO1, FOFU-04-LCR,FOFU-05-06 and FOFU-OSHCI in.attempts to help decrease the observed elevated methane gas concentrations detected at GP-11 and GP-12 as directed by the client. SCS will continue to adjust wells as directed by Allied personnel.. Finally, during this reporting period,temperatures at LFG extraction wells were monitored and observed to range from 51 to 93 degrees Fahrenheit(see Table 3). These temperatures are considered to be in the low to normal range for anaerobic decomposition. SCS will continue to test LFG temperatures at each extraction well on a monthly basis in order to develop a database. This additional infoTmati.on should provide a better understanding of subsurface conditions at the site: - LFG Collection Systexn Visual observation of the LFG collection system.is conducted twice per month. During these visits, observations are made to ensure no pipe breakages have occurred and condensate drain sumps remain functional. Minor.repairs are completed as required. On March 8, 13, 21 and 27, 2006, SCS performed monitoring of all accessible LFG condensate 5u11Z.ps defined as ARTP-1 through 7 and FOTP-8 through 19 and recorded the liquid level control pump cycle counters (see Table 3)_ In addition, during pervious reporting periods, SCS observed and repaired several slight air supply and/or liquid leaks at several LFG condensate sumps. As requested by the Client, SCS has prepared a proposal dated August S, 2004,and recommends that the existing air and condensate connections he modified to decrease the potential for future separations/air leaks. Finally, SCS routinely conducts a pressure drop survey(Le., measurement of main pipeline pressure at various points throughout the LFG collection system). The results of this survey indicated that no major restrictions within the LFG collection system currently exist and all accessible extraction wells are receiving adequate vacuum. LFG Blower/Flare Station (BFS) Visual observations and testing of the LFG BFS was conducted on March 4. 8, 21, 22,23,27, 29 and 30. 2006. During these visits, operating parameters Axe zn.onitored and mechanical and electrical components are checked for workability. Throughout the.reporting period,the BFS was set to operate continuously. BFS data is shown in Table 4.