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' -, y = . " r.,-�c -�' g — �77gr--.ffl= - it „a—z'-- -c�. ';�`:�„ -".$ `a'`s - �.�.--` `�''MY <br /> µ a r ^" b .f � r5 +�"E �' s � .' .,tea aw ams_ ..&'.a <br /> ... .::.. <br /> $..a3 <br />"r <br /> P <br /> Amended Site Safety Plan July 19, 1990 <br /> € ARCO Station No. 2076, Lodi, California AGS 30008-4S j <br /> Propane <br /> Propane is a colorless bas, odorless w"hcn pure, though for most industrial uses a foul- <br /> smelling odorant is added. Propane is incompatible with strong oxidizers. Propane is an <br /> asphyxiant and being heavier than air, can displace air in confined spaces. It is explosive in <br /> concentrations of 2.2 to 9.5% by volume in air. Prolonged exposure can have narcotic <br /> effects, i.e. dizziness, disorientation or excitation. Target organs are the CNS. Liquid or <br /> gaseous propane can cause frostbite upon exposure to skin. Routes of entry or exposure are <br /> by inhalation or by contact. <br /> POSSIBLE E';PLOSIVE ATMOSPHERES <br /> Gasoline has a flammable range from approximately 1.4 to 7.6 percent in air. Propane has <br /> an explosive range from 2.2 to 9.5 percent in air. One percent in air is equivalent to 10,000 <br /> ppm; thus the lower explosive limit (LEL)for gasoline is 14,000 ppm and propane has an <br /> LEL of 22,000 ppm. Normally explosive levels may be reached in tanks, pits, or other <br /> confined spaces. Any area suspected of containing potentially explosive levels of gasoline <br /> or propane will be evaluated with an intrinsically safe or explosion-proof combustible gas <br /> indicator(CGI). Personnel response will be based on the following action levels from CGI <br /> readings: <br /> - Less than 10 then Continue activities and <br /> percent of LEL' monitoring <br /> - 10 to 25 percent then Continue monitoring <br /> of LEL with extreme caution as <br /> higher levels are <br /> encountered <br /> Greater than 25 then Explosion hazard. <br /> 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 /> GeoSystems' personnel and subcontractors must immediately withdraw from the site. The <br /> hazard potential will be evaluated by Applied GeoSystems' management and a plan of <br /> action will be assessed. <br /> `- Applied Ge®:ystems <br />