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k4 <br /> a.w <br /> Chevron U.S.A. Inc. <br /> Site Safety Plan <br /> -, October 2, 1991 <br /> TABLE I <br /> ' ACTION LEVELS <br /> NOTE: The information in this chart applies to gasoline and its <br /> chemical constituents. <br /> GASOLINE PEL* = 300 PPM GTI ACTION LEVEL (HALF FACE) = 50 PPM <br /> (PULL FACE) = 100 PPM <br /> A C T I O N L E V E L S F O R P P E <br /> Air Monitoring <br /> Instrument LEVEL D LEVEL C LEVEL B <br /> LEL < 0.5$ 0.5% - 5% >5% <br /> PID/FID < 50 ppm 50 -- 100 ppm (Half face) N/A <br /> 100 - 750 ppm (Full face) 750 ppm <br /> 02 19.5 - 23% 1.9.5 - 23% <19.5% <br /> Explanatory Information: <br /> LEL Gasoline = 1.4 % or 14,000 ppm <br /> 0.5% LEL = 70 ppm (Wear Level C) <br /> 5% LEL = 700 ppm (Wear Level C) <br /> >5% LEL = Level B (>700 n* ) <br /> NOTE: Withdraw from site and co_-.-tact the project eager if: <br /> LEL > 20%, and/or 02 > 23% <br /> * PEL = Permissible Exposure Limit (OSHA 1989) <br /> 4 <br /> i <br /> 'hu <br />