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B. EXPLOSION HAZARD: Not expected <br />Action Level <br />Instrument & Date of Above Background Frequency/Duration of <br />Calibration (Ambient Air) Air Monitoring Action <br />Combustible gas Greater than. 20% LEL Prior to tank removal Leave area <br />indicator <br />C. OXYGEN DEFICIENCY: Not expected <br />Instrument & Date of <br />Calibration <br />Action Level <br />(Ambient Air) <br />Frequency/Duration of <br />Air Monitoring <br />Action <br />02 meter <br />Less than 19.50/fl OZ <br />More than 23%0 0, <br />Do not enter <br />Heat stress meter <br />Noise meter <br />D. OTHER INSTRUMENTS: Not applicable <br />Instrument & Action Level <br />(Breathing Zone/ <br />Date of Calibration Ambient Air) <br />Duration/Frequency <br />of Air Monitoring Action <br />Date <br />Draeger pump/tubes <br />Radiation monitor <br />Heat stress meter <br />Noise meter <br />H,S meter <br />pH analyzer <br />Others <br />L:I500001504411WP150441k27.doc 14 <br />