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HISTORICAL SUMMARY OF ANALYTICAL RESULT; <br /> UNSATURATED ZONE AIR <br /> NORTH COUNTY SANITARY LANDFILL <br /> Sample Type:Air SG-8 Intermediate <br /> Sampling Date 11/14/03 2/12/04 5/7/04 7/22/04 11/9/04 2/10/05 9/30/05 6/29/06 <br /> Monitoring and Field Parameters <br /> Methane Concentration(percent) 0 0 0 0 0 0 0 0 <br /> Volatile Oroanic Compounds PPB(v/v <br /> Benzene <0.5 <0.5 < ,5 <0, < ,5 < .5 <0.5 ND <br /> en I C loride <1.0 <1.0 <1.0 <1. <1.0 <1, <1, ND <br /> romomethane <0.5 < ,5 <0.5 <0.5 <0.5 <br /> . .5 <0.5 <br /> Ru- <br /> Ca n etrach onde <0.5 <0.5 < .5 <0.5 <0.5 <br /> hloroenzene <0.5 <V.5 <0.5 <0.5 0.9 <0.5 <0.5 ND <br /> Chloroethane <0.5 <0.5 < ,5 <0.5 < ,5 <0. <0.5 ND <br /> Chloroform <0.5 <0.5 < .5 <0, < <0.5 <0.5 ND <br /> Chloromethane < .5 1.3 <0.5 3. <br /> 1,2- ibromoethane <0.5 <0.5 <0. <0.5 <0.5 <0.5 <0.5 ND <br /> 1,2-Dichlorobenzene <0.5 <0.5 1.0 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,3- i orobenzene <0.5 <0.5 <0.5 6.0 <0.5 <0.5 <0.5 ND <br /> 1,4- i orobenzene <0.4 <0.4 7.2 5.7 3.3 4.3 <0.5 N <br /> Dichlorodifluoromethane <0.5 <br /> 1,1- ichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br /> 2- i oroethane <0.5 <0.5 < .5 <0.5 <0.5 <1.0 <1.0 D <br /> 1,2- ichloro-1,1,2, - etra uoroethane <0. < <0.5 <0.5 <0.5 <0.5 <0.5 <br /> 1,1-Dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 N <br /> cis-1, - is oroethane <0.5 <p.5 < .5 < .5 <0.5 <0.5 <0.5 D <br /> 1,2- ichloropropane <0.5 <0.5 < .5 < <br /> cis-1, ichloropropene <0.5 <0.5 <0.5 <0.5 < .5 <0.5 <0.5 <br /> trans- ,3-Dichloro ropene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br /> t y benzene <0.5 <0.5 < .5 < .5 < .5 <0.5 <0.5 ND <br /> hexachlorobutadiene <1.0 <1.0 <1. <1. < ,p <1. <1.0 <br /> eth lane Chloride .0} < < . ,0 < < <br /> aryrene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 2 I nPhlorn 1 > w <br /> >Tr;n < .5 <0.5 <0.5 <0.5 <0.5 <br /> ND- <br /> 1,1,2,2-Tetrachloroethane < .5 <0.5 <0.5 < < <0.5 <0.5 ND <br /> etra oroet ane < .5 <0.5 1.1 5 <0.5 <0.5 <br /> Toluene < 3 8 6.4 <0.5 <br /> 1.6 wA .7.2 1.0 <br /> 1,2, richlorobenzene <1.0 <1, < .0 <1.0 <1.0 < ,0 < .0 N <br /> 1,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 < .5 < .5 ND <br /> 1,1,1-1 richloroethane 20 < ,5 <0.5 1.9 <0.5 <0.5 <0.5 ND <br /> Trichloroethene <1.0 < , < .0 <1.0 <1.0 <1.0 < <br /> Trick oro uoromet ane <<0,5 < ,5 , <0.5 <0.5 <0.5 < .5 ND <br /> 3,5- nmeth enzene < .5 <0.5 <0.5 1. < .-5 <0.5 <0.5 ND <br /> 1,2, nmethylbenzene <0.5 < .5 1. <br /> Vinyl londe <0.5 <0,5 <0. <0.5 <0.5 <0. < .5 <br /> rTvp olene <0.5 <0.5 2.5 <br /> o xylene <0.5 <0.5 <0.5 1.5 1.0 <0.5 <0.5 ND <br /> Not Required <br /> NT=Not Tested <br /> =Trace Concentration <br /> (1} Parameter also detected in one or more quality control blanks. <br /> M S!f t;PrirW31/2� M M �' <br />