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i <br /> 1 Place nose into the well/hoie unui it reaches oottom. <br /> • Run compressor for is minutes. <br /> • Measure the percent LEL in the weii/hole. if the reading continues aoove <br /> 20% LEL. conunue to run the compressor. if levels are neiow 20% LF-1- <br /> continue to monitor the weii/hoie for - minutes: if reaazngs remain oelow <br /> 20% LEL resume drilling, ana continue to monitor. <br /> EJS JS =0110002 <br /> 3-4 <br />