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z <br /> i <br /> Ma8168D D <br /> F� -9- <br /> June 1990 <br /> TABLE 1 <br /> HAZARDOUS SUBSTANCES DATA <br /> (values in ppm) <br /> maximum Levels <br /> odor, LEL/UEL' Previously Encountered <br /> ySTELe i�LH` Threshold (percent) in Soil <br /> Substance PEO a <br /> 1.7 <0.25 <br /> t Carcinogen 1.4 1.3 /7.1 3.2 <br /> Benzene 100 125 200Q 2.0 1.0 /6.7 0.84 <br /> Ethylbenzens 100 150 20DO 2.1 1.2 17.0 12A <br /> Toluene 150 10QD NE 1.1 /7-0 <br /> Xylens(Total) 100 NE 1Q.0 1.4 /7.6 <br /> 500 300 NE NE <br /> Gasoline NE NE NE <br /> Diesel fuel <br /> a Permissible Exposure Limit in air for&hour day as established by ACGIH(1967 update) <br /> b Short-Term Exposure Umit in are for 15.minute period as established by ACGIH(1967 update) <br /> v- c immediately Dangerouc to Uts or Health for NIOSH Pocket Guide to Hazardous Substanoos(1985) <br /> d Adapted from AIHA Journal(1987) <br /> a <br /> Lower Explosive Limit/Upper Explosive Unlit from N1DSH Pocket Guide to Hazardous substances 11985) <br /> NE Not Establishednot fingerprinted <br /> total petroleum hydrocar <br /> Maximumbon concentration detected,1,100 ppm, <br />