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Table 1 lists the structures that were monitored during the <br /> April 21, 1992 event. All structures along the boundary between <br /> the landfill and the labor camp (17) were monitored for methane. <br /> Each structure is divided in half, so the results in Table 1 are <br /> reported as east or west half. In addition, each structure has a <br /> built in venting system that exits through the roof. Three of the <br /> vents were monitored for methane. <br /> One labor camp monitoring event remains. However, the housing <br /> units in the farm labor camp are currently occupied. The Housing <br /> Authority has verbally declined access into the structures to <br /> perform the final monitoring event. The County sent a letter to <br /> the Housing Authority requesting permission to access the <br /> structures by August 11, 1992 . The Housing Authority did not <br /> responded to our written request. Therefore, the final monitoring <br /> event for the labor camp structures was not performed. <br /> ON-SITE STRUCTURE AND GAS PROBE MONITORING <br /> On June 25, 1992 , and August 11, 1992 , the County performed probe <br /> and on-site structure monitoring. The methane concentrations were <br /> similar to those found in previous monitoring events. The results <br /> are contained in Tables 2 and 3 . <br /> The following is an anticipated monitoring schedule to finish the <br /> monthly monitoring required according to the letter from the <br /> Environmental Health Division, dated December 19, 1991. <br /> ANTICIPATED MONITORING SCHEDULE <br /> * Perform 5th probe monitoring event September 11, 1992 <br /> * Perform final probe monitoring event October 11, 1992 <br /> * Perform final labor camp event If and when access <br /> is approved <br /> This presents the Landfill Gas Monitoring Report for the Harney <br /> Lane Sanitary Landfill. <br /> 5 <br />