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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> GROUNDWATER <br /> FOOTHILL SANITARY LANDFILL <br /> MW-3 <br /> Units:mg/l,unless noted <br /> ample Designation - <br /> Sampling Date 8/14/03 <br /> Monitoring and Field Parameters <br /> General Water Quality Parameters <br /> Temperature(°C)(field) 19. <br /> Chloride 11 <br /> Nitrate-Nitrogen 3.8 <br /> Total Dissolved Solids 190 <br /> Sulfate 7.6 <br /> pH(std.units)(fie 7.02 <br /> Electrical Conductivity(umhos/cm) 274 <br /> Tur6i2(NT )(field) 6.7 <br /> Calci <br /> 25 <br /> Potassium 1.5 <br /> Magnesium 13 <br /> Sodium 18 <br /> Volatile Organic C m ounds(ug/1) <br /> Trichloroethene(TCE) <0.36 <br /> ,1- is loroethene <0.24 <br /> Chloroform <0.37 <br /> enzene <0.28 <br /> m/p-X ene <0.38 <br /> orobenzene <0.32 <br /> Methylene Chloride (0.28*} <br /> catone (1.4-) <br /> Napthalene <0.93 <br /> Methyl tert-butyl ether <0.36 <br /> Toluene <0.32 <br /> 1,4-Dichlorobenzene <0.46 <br /> etre loroet ene <0.44 <br /> - utanone <0.14 <br /> 3- is loro ro ane <0.40 <br /> hioromethane (0.221 <br /> 1,2,4- r met enzene <0.18 <br /> 1,3,5-Tame y enzene <0.28 <br /> Constituents of Concern Parameters <br /> Semivolatile Organic Compounds <br /> (EPA Method 3520/8270) <br /> All Compounds N <br /> Organochlorine Pesticides and Polychlorinated Biohenvl's <br /> (EPA Method 3510/8080) <br /> All Compounds N <br /> Trace Concentration <br /> [1]This analytical result appears to be anomalous and therefore was not used in statistical evaluation procedures. <br /> (1)Parameter also detected in one or more quality control blanks <br /> ND=Not Detected <br /> NM=Not Measured <br /> NR=Not Required <br /> MW-3;Printed:1/30/2004 23 of 28 <br />