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Site Safety Plan <br /> ARCO Station S48, Stockton, California March 23, 1990 <br /> AGS 30004-1S <br /> POSSIBLE EXPLOSIVE ATMOSPHERES <br /> Gasoline has a flammable range from approximately 1.4 to 7.6 percent in air. O <br /> in air is equivalent to 10,000 ppm; thus the lower explosive limit One Percent <br /> Normally explosive levels may be reached in tanks, pits, or other confined spaces. An <br /> area suspected of containing (�L) is 14,000 ppm. <br /> potentially explosive levels of gasoline will be evaluated with <br /> an intrinsically safe or explosion-proof combustible <br /> gas indicator <br /> response will be based on the following action levels from CGI readingCGI), personnel <br /> Less than 10 then nue Contiactivities and <br /> percent of LEL= monitoring <br /> 10 to 25 4 <br /> nue <br /> of percent then Continue monitoring <br /> with extreme caution as <br /> higher levels are <br /> encountered <br /> - Greater than 25 then <br /> A percent of LEL Explosion hazard, <br /> 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 <br /> GeoSystems'personnel and subcontractors must immediately withdraw from the <br /> hazard Potential will be evaluated by Applied Geos stems' then all Applied <br /> action wiII be assessed. site. The <br /> Y management and a plan of <br /> DECONTAMINATION PROCEDURES <br /> Drilling equipment and personal protective equipment will undergo gross deco <br /> onsite. This gross decontamination will include washing contaminated equip <br /> men=with a <br /> trisodium phosphate (TSP) solu°ion. Steam-cleaning is an acceptable alternative. <br /> EMERGENCY RESPONSE PROCEDURES <br /> In the event of a fire, explosion orro e <br /> A P rty damage,..the.nearest-Applied'GeaSystams <br /> r resp-and_the-Administrative Office will be immediately notified. If necessary, local fir <br /> i . or response agencies will be called. <br /> e <br /> 13 <br /> �4polr°e� �enSwstes <br />