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it <br /> • Place hose into the well/hole until it reaches bottom. k <br /> Run compressor for 15 minutes. <br /> Measure the percent LEL in the well/hole. if the reading continues above <br /> 20% LEI, continue to run the compressor. if levels are below 20% LEL. <br /> continue to monitor the well/hole for 5 minutes: if readings remain below <br /> 20% LEL resume drilling, and conunue to monitor. <br /> 4 I <br /> f <br /> i <br /> I <br /> I <br /> 1 <br /> I' <br /> I <br /> I <br /> f <br /> i <br /> I <br /> I <br /> f � <br />' I <br /> � I <br /> 1 <br /> LEMISY-3.01/0002 <br /> 3-4 <br />