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0 D. <br />1. Total Gaseous Organic Concentration <br />The purpose of these tests is to correlate the reading of the handheld meter with the Total <br />Organics, which are primarily methane, but which include other gasses that could affect the <br />handheld meter. <br />Analyze the total gaseous organic compound concentration using EPA Method 25B. This is <br />accomplished either by collecting samples with Summa canisters and sending them to a <br />certified laboratory, or collecting samples in tedlar bags while the County's stack test contractor <br />is at North County Landfill, and having the test done while the mobile laboratory is on site there. <br />• Calibrate the handheld meter prior to this test. <br />• Measure and record the methane content using the handheld meter. <br />• Collect one sample for analysis by EPA Method 25B <br />• No less than 20 minutes after the first reading by the handheld meter, measure and <br />record the methane content using the handheld, meter. <br />• Collect a second sample for analysis by EPA Method 25B <br />• No less than 20 minutes after the second reading by the handheld meter, measure and <br />record the methane content using the handheld meter. <br />If collecting samples in a Summa canister, in addition to the steps above: <br />• Ensure that the canister contains approximately one-half atmosphere of helium <br />• Record the pressure prior to taking a sample <br />• Ensure that the final pressure within the canister after collecting the sample is no more <br />than 11 psi <br />• Record the pressure after taking the sample <br />Suma canisters have a "shelf life" of approximately 10 days, including analysis time which could <br />be two days. <br />This information is used to calculate the non -methane organic carbon correction factor, which is <br />a component of the GHG emissions calculations. <br />Subpart HH Greenhouse Gas Plan 4 Foothill Landfill <br />April 1, 2010 San Joaquin County <br />