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i <br /> MY <br /> WWI W <br /> w� <br /> Site Safety Plan December 17, 1990 <br /> ® ARCO Station No. 2076, Lodi, California AGS 3000$-3S <br /> POSSIBLE EXPLOSIVE ATIVIOIPHERES <br /> Gasoline has a flammable range from,approximately 1.4 to 7.6 percent in air. One percent <br /> in air is equivalent to 10,000 ppm, thus the lower explosive limit (LEL) is 14,000 ppm. <br /> Normally explosive levels may be reached in tanks, pits, or other confined spaces. Any <br /> area suspected of containing potentially explosive levels of gasoline will be evaluated with <br /> an intrinsically safe or explosion-proof combustible gas indicator (CGI). Personnel <br /> response will be based on the following action leve!-- from CGI readings: <br /> Less than 10 then Continue activities and <br /> percent of LEL* monitoring <br /> 10 to 25 percent then Continue monitoring <br /> of LLcI, with extreme caution an <br /> higher levels are <br /> encountered <br /> 7 - Greater than 25 then Explosion hazard. <br /> i' percent of LEL Cease activities and <br /> vacate area immediately <br /> * CGI readings in percent of lower explosive limit <br /> If an explosion potential is present onsite beyond 25 percent of the LEL then all Applied <br /> GeoSysterns'personnel and subcontractors must immediately withdraw from the site. The <br /> hazard potential will be evaluated by Applied GpoSystems' management and a plan of <br /> z action will be assessed. <br /> DECONTAMINATION PROCEDURES <br /> ritDrillin equip 'me and personal protective equipment will undergo loss decontamination <br /> onsite. This gross decontamination will include washing contaminated equipment with a <br /> trisodaum phosphate(TSP) solution. Steam-clean g is an acceptable alternative. <br /> EMERGENCY RESPONSE PROCEDURES <br /> In the event of a fire, explosion, or property damage, the nearest Applied GeoSystems <br /> Branch and the Administrative Office will be immediately notified. If necessary, local fire <br /> or response agencies will be called. <br /> s . . <br /> r 13 <br /> ;i <br /> v <br />