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M m MW -ter M m man W +ter m <br /> HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> UNSATURATED ZONE AIR <br /> NORTH COUNTY SANITARY LANDFILL <br /> SG-8 Shallow <br /> Sample Type:Air <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 Organic Compounds PPB(v/v) <br /> Benzene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 N <br /> Benzyl Chloride <1. <1.0 <1.0 <1, < < <1.0 N <br /> Bromomethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> Catton Tetrachloride < <0.5 < <0.5 < <0.5 <0.5 <br /> h oro enzene <0.5 <0.5 < < <0.5 <0.5 <0.5 ND <br /> Chloroethane <0.5 <0. <0.5 <0.5 <0. <0.5 <0.5 ND <br /> Chloroform < .5 <0.5 <0, <0.5 <0.5 <0.5 <0.5 NO <br /> h orome ane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 1, - ibromoethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.6 <0.5 <br /> 1,2-Dichlorobenzene -<0.6-----<6-.5 1.4 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,3-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 3.8 <0.5 <0.5 NO <br /> 1,4-Dichlorobenzene <0.4 1.0 10 3.3 3.8 <-G-.5 < .5 <br /> Dichlorodifluoromethane <0.5 3.8 5.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 1-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,2-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 ND <br /> 1,2-Dick oro-1,1,2,2-Tetra uoroethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,1- ichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> cis-1,2-Dick oroethene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,2- ich oropropane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> cis- , ichloropropene <0.5 <0.5 <0.5 <0. < <0. <0.5 NO <br /> trans-1,3-Dichloropropene <0. <0.5 <0.5 <0. <0.5 <0.5 <0.5 <br /> thy benzene <0.5 <0.5 <0.5 < <0. <0. <0.5 N <br /> Hexa oro uta iene < <1.0 < <1. <1.0 <1.0 <1.0 NO <br /> Methylene Chloride (3.3) 3.3 <1.0 2.4 <0.5 2 <1.0 ND <br /> VStyrene <0. <0.5 <0.6 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,1,2-Tnchloro-1,2,2-Tri uoroethane <0.5 <0.5 <0.5 <0.5 <0.5 < .5 <0.5 ND <br /> 1,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0. <0.5 <0.5 <0.5 ND <br /> Tetrachoroethene(P E <0.5 <0.5 2.2 <0.5 2.0 <0.5 <0.5 ND <br /> Toluene <0.5 9.2 10 <0.5 1.5 2.1 <0.5 1.3 <br /> 1,2, n lorobenzene <1.0 <0.5 <0.5 < <1.0 <1.0 <1.0 N <br /> 1,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NO <br /> 1,1,1-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> Trichloroethene <1.0 <1.0 <1.0 <1.0 <1. <1. <1.0 N <br /> Trick oro uoromethane <0.5 <0.5 <0.5 <0.5 <0.5 < <0.5 <br /> 5- rime! y enzene <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <br /> 1,2,4-Irimethylbenzene <0,5 <0.5 2.1 1.9 1.1 <0.5 <0.5 N <br /> h�londe <0.5 <0.5 162 < <0.5 <0.5 <0.5 N <br /> m p Xylene <0.5 2. <0.5 <br /> o-Xylene <0.5 < .5 <70.5 <0.5 0.9 <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 /> SG-8,Shal;Printed:7/31/2006 1 of 1 <br />