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<br /> Amended Site Safety Plan February 15, 1990
<br /> ARCO Station No. 760, Lodi, California AGS 38048-65
<br /> Propane
<br /> Propane is a colorless gas. odorless when 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. ''arget organs are the CNS. liquid or
<br /> gaseous propane can cause frostbite upon exposure to skin.R^utes of entry or exposure are i
<br /> by inhalation or by contact.
<br /> FGSSIBLE EK.PLQSWE ATMOSPU TES
<br /> Gasoline has a flammable range from approxisn ttely 1.4 to 7.6 percent in air. Propane has
<br /> an explosive range from 2.2 to 9.5 percent iu air, One percent in air is equivalent to 10,000
<br /> ppm; thus the lower explosive limit (UL)for gasoline is 14.000 ppm and propa.*ie has an
<br /> LEI. 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 sale or explosion-proof combustible gas
<br /> indicator(CGI). Personnel response will be based on the following action levels from CGI
<br /> readings:
<br /> 1 - Less than 10 then Cpatinue activities and
<br /> percent of LEL' monitoring
<br /> { 10 to 25 percent then Continue monitoring
<br /> i
<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 /> CGL readinga in percent of lower explosive limit
<br /> If an explosion potential is present onsite beyond 25 percent of the LEL ther, all Applied
<br /> GeoSystems'personnel and subcontractors must immediately withdraw from the site. The
<br /> hazard potential will be evaluated by Applied GeoSysterns' management and a plan of
<br /> action will be assesved.
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