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1118-1 ORICAL SUMMARY OF ANALYTICAL RESULTS <br /> FOOTHILL SANITARY LANDFILL <br /> Units:mg/I,unless noted <br /> Sample Designation MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 Page 10 of 20 <br /> Sampling Date 4/1/99 7/7/99 10/20/99 3/8/00 5/11/00 7/13/00 10/9/00 <br /> (Quarterly Monitoring and Field Parameters <br /> Volatile Organic Compounds(ug/I) <br /> Methylene Chloride <0.03 2.43 <0.03 <0.06 <0.06 <br /> Trichloroethene(TCE) <0.89 <0.89 <0.06 0.227* 0.652 0.285* 0.323* <br /> I,I-Dichlorocthene <0.72 <0.72 -0,04 <0A4 0.285 0.0795* 0,0688* <br /> Chloroform <0.83 <0.83 <0.06 <0.07 <0.06 <0.07 <0.07 <br /> Chlorobenzcne <0.90 <0.07 <0.07 <0.07 <0.07 <0.07 <br /> Acetone <1.79 <1.79 <br /> Napthalene <0.1 <0.1 <br /> Chitridc 13 7.1 9.61 9.7 9.73 9.6 9.96 <br /> Nitrate-Nitrogen 4.1 2.9 3.5 3.21 3.45 3.36 3.5 <br /> Total Dissolved Solids 179 213 220 202 204 188 196 <br /> Sulfate 5.1 1.9 6.57 7.24 6.98 7.62 7.19 <br /> pH(std.units)(field) 7.77 7.41 7.9 7.36 7.8 8.23 7.41 <br /> Electrical Conductivity(umhos/cm)(field) 268 271 270 264 273 272 272 <br /> 'Turbidity(NTU)(field) 1.3 1.01 >200 3.3 0.33 0.55 0.21 <br /> Temperature(°C)(field) 19.3 24.6 21.5 17.3 20.5 21.7 20 <br /> Constituents of Concern Parameters <br /> Semivolatile Organic Compounds <br /> (EPA Method 3520/8270) <br /> All Compounds NR NR ND NR NR NR NR <br /> Organochlorine Pesticides and Polychlorinated Biphenyl's <br /> (EPA Method 3510/8080) <br /> All Compounds NR NR ND NR NR NR NR <br /> Chlorinated Herbicides <br /> (EPA Method 8150A Modified) <br /> All Compounds NR NR ND NR NR NR NR <br /> *-Trace Concentration <br /> (I I"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 /> N:\XLS\0939\00408\Hist, Revision 1:1/3/01 QA/QC <br /> ® ® ® ® ® ® ® ® M = M ® = ® ® M M <br />