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Sire Hazard Information Provided By:' <br /> Signature: <br /> Phone Number. : (916) 668-5300 <br /> Date.- <br /> Job <br /> ate:Job Hazard Analysis <br /> Gasoline and/or Diesel. Range Hydrocarbons <br /> THE MAIN COMPOUND OF INTEREST IS PETROLEUM RANGE HYDROCARBONS IN <br /> WATER AND SOIL. GASOLINE AND ITS CONSTITUENTS POSE HEALTH HAZARDS <br /> IN TWO MAJOR CLASSIFICATIONS: EXPLOSIVITY AND TOXICITY. THE <br /> EXTREME FLAMMABILITY OF GASOLINE IS COMMONLY KNOWN. THE LOWER <br /> EXPLOSION LIMIT (LEL) OF GASOLINE VAPOR IS 1.3 PERCENT IN AIR. IF <br /> THE CONCENTRATION OF GASOLINE VAPOR IN AIR EXCEEDS 1.3 PERCENT <br /> (13.,000 PARTS PER MILLION) AND SUFFICIENT QUANTITIES OF OXYGEN ARE <br /> PRESENT, THEN THE INTRODUCTION OF SUFFICIENT HEAT, SPARK OR FLAME <br /> WILL RRSUL'T' IN AN EXPLOSION. <br /> A LESSER KNOWN HEALTH HAZARD RESULTING FROM EXPOSURE TO GASOLINE <br /> IS TOXICITY. SEVERAL COMMON CONSTITUENTS OF GASOLINE HAVE BEEN <br /> LINKED TO VARIOUS HEALTH PROBLEMS. THE CONSTI'T'UENTS OF GASOLINE <br /> THAT HAVE BEEN SHOWN TO CAUSE SERIOUS HEALTH PROBLEMS RESULTING <br /> p FROM RELATIVELY MINOR EXPOSURES INCLUDE BENZENE; TOLUENE, META, l <br /> PARA, AND ORTHO XYLENES, ETHYL BENZENE, AND TETRAETHYL LEAD. <br /> TYPICAL PERCENTAGES (BY WEIGHT) OF THESE CONSTITUENTS IN GASOLINE <br /> ARE: BENZENE - 0.12-3.50%, TOLUENE 2.73-23..80%, META XYLENE - <br /> 1.77-3.87%, PARA XYLENE - 0.77. 1.580, ORTHO XYLENE - 0.68-2.686%, <br /> AND ETHYL BENZENE - 0.36-2.86x. TYPICAL PERCENTAGE OF TETRAETHYL <br /> LEAD IS NOT AVAILABLE. <br /> UNITS USED TO DESCRIBE OCCUPATIONAL EXPOSURES TO HAZARDOUS <br /> SUBSTANCES INCLUDE: EXPOSURE LIMIT, ALSO KNOWN AS THE "THRESHOLD <br /> LIMIT VALUE" (TLV) , CEILING LIMIT, AND THE CONCENTRATION LEVEL <br /> THAT IS "IMMEDIATELY DANGEROUS TO LIFE AND HEALTH" (IDLH) . THE <br /> EXPOSURE LIMIT DEFINES THE MAXIMUM CONCENTRATION OF A SUBSTANCE TO <br /> WHICH ONE CAN BE EXPOSED DURING.AN 8 HOUR PERIOD WITHOUT SUFFERING <br /> SIGNIFICAPTT HEALTH EFFECTS. THE CEILING LIMIT IS THE <br /> ! CONCENTRATION LEVEL THAT CANNOT BE EXCEEDED AT ANY TIME; i.e., A <br /> SUITABLE RESPIRATOR MUST BE WORN IF CONCENTRATION VALUES REACH THE <br /> CEILING LIMIT. THE IDHL LEVEL REPRESENTS A MAXIMUM CONCENTRATION <br /> FROM WHICH ONE COULD ESCAPE WITHIN 30 MINUTES OF RESPIRATOR <br /> FAILURE WITHOUT EXPERIENCING ESCAPE-IMPAIRMENT_ OR_-__IRREVERSIBLE__— <br /> HEALTH DAMAGE. TDLH VALUES ARE NOT LISTED FOR SUBSTANCES THAT ARE <br /> POTENTIAL HUMAN CARCINOGENS. <br /> EXPOSURE TABLE <br /> page 5 <br />