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rr r r� rr r rr rr rr r rr rr it r r ® rr <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />MW -1 <br />Units: mg/I, unless noted <br />Sample Designation MW -1 <br />Sampling Date 10/14/02 <br />Monitoring and Field Parameters <br />General Water uali Parameters <br />Chloride 9.2 <br />Nitrate -Nitrogen <br />3.2 <br />Total Dissolved Solids <br />360 <br />Sulfate <br />5.8 <br />pH (std. units) (field) <br />6.74 <br />Electrical Conductivity (umhos/cm <br />250 <br />Turbidity (NTU) (field) <br />6.9 <br />Temperature ("C) (field) <br />20.4 <br />Volatile Organic Compounds (ug/I) <br />Methylene Chloride <br /><0.3 <br />Trichloroethene (TCE) <br /><0.2 <br />1,1-Dichloroethene <br /><0.2 <br />Chloroform <br /><0.3 <br />Chlorobenzene <br /><0.2 i <br />Acetone <br /><2.0 <br />Napthalene <br /><0.3 <br />Methyl tert-butyl ether <br />5.3 <br />Constituents of Concern Parameters <br />All Compounds NR <br />Organochlorine Pesticides and Polychlorinated Bi henyl's <br />(EPA Method 3510/8080) <br />All Compounds NR <br />Chlorinated Herbicides <br />(EPA Method 8150A Modified)_ _ _ <br />All Compounds NR <br />' = Trace Concentration <br />[1] This analytical result appears to be anomalous and therefore was not used in statistical evaluation procedures. <br />ND = Not Detected <br />NR = Not Required <br />MW -1: Printed: 3/4/03 7 of 24 <br />