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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />LEACHATE <br />NORTH COUNTY SANITARY LANDFILL <br />Units: me -I.s .ted <br />Sample Designation L-4 L-4 L-4 L-4 L-4 L4 L-4 L-4 L4 L-4 L-4 <br />Sam li Dete 3/3/05 10/11/05 7/25/06 7/19/07 7122/08 1/12/09 8/5/09 2/10/10 1/11/11 8/4/11 1/9/12 <br />Monitorioa and Field Parameters <br />General Wet%Ouality Parameters <br /><I <br /><1 <br /><0.39 <br /><0.42 <br /><0.39 <br /><0.42 <br />10.40 <br /><0.40 <br /><0.40 <br /><0.40 <br /><1.7 <br /><I.6 <br />NT <br /><0.35 <br /><0.12 <br /><0.23 <br /><0. 13 <br /><0.24 <br /><0.13 <br />10.24 <br /><0.13 <br /><0.24 <br />pH (std units) (field) <br />6.45 <br />618 <br />7.08 <br />673 <br />6.71 <br />6.86 <br />6.51 <br />6.71 <br />6.01 <br />6.31 <br />7.11 <br />Electrical Conductivity (undtos/cm) (field) <br />1540 <br />2751 <br />417 <br />2065 <br />2593 <br />2384 <br />2467 <br />1758 <br />2292 <br />2603 <br />2986 <br />Temperature (°C) (field) <br />NT <br />NT <br />22.8 <br />24.1 <br />24.1 <br />23.4 <br />21.9 <br />21.1 <br />23.0 <br />23.1 <br />22.8 <br />Oxygen Reduction Potential (ORP) (field) <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />+64 <br />-62 <br />Dissolved Oxygen (field) <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />1.36 <br />1.78 <br />Tnbidity(NTU)(fteld) <br />NT <br />NT <br />379 <br />319 <br />NM <br />NM <br />41.7 <br />NM <br />17.6 <br />NM <br />27.6 <br />Chloride <br />47 <br />240 <br />130 <br />200 <br />260 <br />340 <br />NR <br />180 <br />210 <br />480 <br />490 <br />Total Hardness (calculated) <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />1100 <br />1100 <br />Total Dissolved Solids <br />1000 <br />1760 <br />1210 <br />1600 <br />1600 <br />1500 <br />NR <br />1000 <br />1200 <br />1600 <br />1700 <br />Chemical Oxygen Demand <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />150 <br />150 <br />Nitrate Nitrogen <br />10.2 <br /><0.045 <br /><0.05 <br />10.09 <br /><0.02 <br /><0.03 <br />NR <br />0.048• <br /><0.014 <br />NR <br />10.042 <br />Sulfate <br />3 <br />2" <br />4 <br />1.1 <br />0.85 <br /><0.20 <br />NR <br />0.63' <br />0.50 <br />NR <br />1.2 <br />Metals <br /><l <br /><0.42 <br />0.41" <br /><0.38 <br /><0.38 <br /><1.6 <br />NT <br /><0.14 <br /><0.15 <br /><0.15 <br /><0.15 <br />Calcium, Dissolved <br />134 <br />267 <br />209 <br />200 <br />220 <br />220 <br />NR <br />150 <br />170 <br />250 <br />240 <br />Ma ossium, Dissolved <br />59 <br />137 <br />103 <br />97 <br />110 <br />110 <br />NR <br />73 <br />85 <br />130 <br />120 <br />Potassium, Dissolved <br />2 <br />4.53 <br />1.7 <br />2.7 <br />2.5 <br />2.7 <br />NR <br />1.7 <br />2.3 <br />NR <br />3.0 <br />Sodium, Dissolved <br />67 <br />139 <br />110 <br />120 <br />110 <br />130 <br />NR <br />71 <br />97 <br />NR <br />160 <br />Bromobenune <br />Brommitloromethane <br /><I <br /><1 <br /><0.39 <br /><0.42 <br /><0.39 <br /><0.42 <br />10.40 <br /><0.40 <br /><0.40 <br /><0.40 <br /><1.7 <br /><I.6 <br />NT <br /><0.35 <br /><0.12 <br /><0.23 <br /><0. 13 <br /><0.24 <br /><0.13 <br />10.24 <br /><0.13 <br /><0.24 <br />Bromodichloromethane <br /><1 <br /><0.25 <br /><0.25 <br /><0.40 <br /><0.40 <br /><1.4 <br /><0.30 <br /><0.12 <br /><0.14 <br /><0.14 <br /><0. 14 <br />Bromoform <br /><1 <br /><0.18 <br /><0.18 <br /><0.41 <br /><0.41 <br /><L6 <br /><0.24 <br /><0.23 <br />10.27 <br /><0.27 <br /><0.27 <br />B.nunnotbue <br /><1 <br /><0.61 <br /><0.61 <br /><0.61 <br />10.61 <br /><1.7 <br /><0.21 <br /><0.20 <br /><0.25 <br /><0.25 <br /><0.25 <br />n-butylbenune <br /><1 <br /><038 <br /><038 <br /><037 <br /><037 <br /><2.1 <br />NT <br /><0.II <br /><0.I1 <br /><0.II <br /><0.11 <br />sec -but Ibenune <br /><I <br /><0.36 <br />0.2" <br /><0.37 <br /><0.37 <br /><2.1 <br />NT <br />10.099 <br />10.15 <br /><0.15 <br /><0.15 <br />lert-butylbenune <br /><I <br /><0.35 <br /><0.35 <br /><0.41 <br /><0.41 <br /><1.9 <br />NT <br /><0.083 <br /><0.13 <br /><0.13 <br /><0.13 <br />Carbon tetrachloride <br /><I <br /><0.37 <br /><0.37 <br /><0.48 <br /><0.48 <br /><2.3 <br /><0.19 <br /><0.18 <br /><0.18 <br /><0.18 <br /><0.18 <br />Chlorobenaene <br /><1 <br />0.55" <br />0.48" <br />0.57 <br /><0.39 <br /><2.0 <br />0.25" <br />0.27" <br />0.38" <br />0.24" <br />0.19" <br />Chloroethane <br /><1 <br />5.9 <br />2.4 <br />2.7 <br />4.6 <br />11.6 <br />2.9 <br />2.6 <br />1.9 <br />1.7 <br />1.2 <br />Chloroform <br /><1 <br /><0.37 <br /><0.37 <br /><0.40 <br /><0.40 <br />4.7 <br />10.23 <br /><0.072 <br /><0.12 <br /><0.12 <br /><0.12 <br />Chloromethane <br /><t <br />10.18 <br />0.53° <br />0.52• <br /><0.41 <br /><I.8 <br /><0.20 <br /><0.I1 <br /><0.14 <br /><0.14 <br /><0.14 <br />2-cldorololume <br /><1 <br /><I.7 <br />0.48" <br />0.47" <br /><0.33 <br /><1.7 <br />NT <br /><0.18 <br /><0.20 <br /><0.20 <br /><0.20 <br />4-chlorololuene <br /><l <br /><0.42 <br />0.41" <br /><0.38 <br /><0.38 <br /><1.6 <br />NT <br /><0.14 <br /><0.15 <br /><0.15 <br /><0.15 <br />dibromochloromethane <br /><I <br /><0.47 <br /><0.47 <br /><0.33 <br /><0.33 <br /><1.6 <br /><0.23 <br /><0.077 <br /><0. 13 <br /><0. 13 <br /><0.13 <br />1,2-dibron-3-chloropane <br /><5 <br /><0.64 <br /><0.64 <br /><0.76 <br /><0.76 <br /><3.5 <br /><0.46 <br /><0.44 <br /><0.44 <br /><0.44 <br />10.44 <br />1,2-dibrom-thanc <br /><I <br /><0.43 <br />2.7 <br /><0.38 <br /><0.38 <br /><2.0 <br /><0.29 <br /><0.16 <br />10.16 <br /><0.16 <br />10.16 <br />Dibromometham <br /><I <br /><0.38 <br /><0.38 <br />10.39 <br />10.39 <br /><1.9 <br /><0.37 <br /><0. 19 <br /><0.24 <br /><0.24 <br /><0.24 <br />1,2-dich1orobenzene <br /><I <br /><1.4 <br />0.39" <br /><0.36 <br /><0.36 <br /><L9 <br /><0.15 <br /><0.068 <br />10.072 <br /><0.072 <br /><0.072 <br />t o_m.hh,.,.h..,.,.. <br /><I <br /><0.34 <br /><0.34 <br /><0.33 <br /><0.33 <br /><I.9 <br /><0.15 <br /><0.060 <br /><0.15 <br /><0.15 <br /><0.15 <br />2.4 3.2 4.9 2.6 <br />0.41- <0.11 0.54 <0.1 <br />2.7 1.0 1.3 1.1 <br />3.9 5.9 5.9 3.7 <br />I Ltichl-these <1 10.24 1.3 0.89 0.86 <1.5 <0. 16 <0.12 <0.18 <0.18 <0.18 <br />2.5" 1.4 6.5 2.9 0.58 0.76 <br /><1.7 <0.14 <0.097 0.16" 0.16" <0.15 <br /><1.8 0.65 0.7 0.82 0.77 0.68 <br /><1.9 NT <0.099 <0.086 <0.086 <0.086 <br />2,2-dichloro ane <br /><l <0.38 <br /><0.38 <br /><0.38 <br /><0.38 <br /><21 <br />NT <br /><0.11 <br /><0. 13 <br />10.13 <br /><0. 13 <br />1 1-dichioropropene <br /><1 <0.38 <br />0.54 <br /><0.46 <br /><0.46 <br /><2.4 <br />NT <br /><0.11 <br /><0.085 <br /><0.085 <br /><0.085 <br />Cis-13-dichloropropene <br /><I <011 <br /><011 <br /><034 <br /><034 <br /><I.5 <br /><0. 19 <br /><0.098 <br /><0. 14 <br /><0.14 <br /><0. 14 - <br />trans-1,3-dichloro ro m <br /><I <0.10 <br /><0Ao <br /><0.39 <br /><0.39 <br />11.8 <br /><0.13 <br /><0.079 <br /><0.079 <br /><0.079 <br /><0.079 <br />Eth Ibenune <br /><1 27 <br />24 <br />12 <br />4.9 <br /><2.2 <br />2.4 <br />4.4 <br />8.4 <br />0.78 <br />0.46 <br />Hexachlombulediene <br /><1 <0.30 <br /><0.50 <br /><0.46 <br /><0.46 <br />13.3 <br /><0.26 <br />10.12 <br /><0.17 <br />10.17 <br /><0.17 <br />