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MM Ma m man m mm <br /> HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> LEACHATE <br /> NORTH COUNTY SANITARY LANDFILL <br /> Units:2!6 unless noted <br /> Sade Designation L-3 113 L-3 U3 113 U3 Ira Ira <br /> Sampling Date 1/23/02 4/17/02 7/16/02 10/1/02 1/15/03 1/19/04 10/25/04 10/11/05 <br /> MoaltgdM and Field Pareaseters <br /> General Water Otwity Parameters <br /> Temperature(°C) 18.1 21.2 20 22.1 16.1 18.8 21.6 NM <br /> Chloride 790 490 540 490 450 610 820 810 <br /> Nitrate Nitrogen <0.045 <0.045 <0.048 <0.045 <0.045 <0.045 <0.045 <0.045 <br /> Total Dissolved Solids 1900 1600 1600 1700 1400 1600 2500 2490 <br /> Sulfate 6.2 <0.33 1.1 <0.33 1 0.33 0.72 0.3* <br /> PH(std units) 6.81 7.13 7.42 6.71 5.62 6.3 6.4 6.91 <br /> Electrical Conductivity(umhos/em) 1490 1610 610 490 2328 2898 4127 2943 <br /> Turbidity(NIU)field NA NA NA NA NA NA 37.9 NM <br /> Metals <br /> Calcium,Dissolved NR NR NR NR NR 230 240 294 <br /> Magnesium,Dissolved NR NR NR NR NR 94 100 162 <br /> Potassium,Dissolved NR NR NR NR NR <1.6 5.7 6.22 <br /> Sodium,Dissolved NR NR NR NR NR 150 150 337 <br /> Volatile Organic Compounds(ug/i) <br /> Acetone NT NT NT <9.0 NT <0.52 (17) 41* <br /> Acetonitrile NT NT NT <96 NT Q.4 Q.4 <2.4 <br /> Acrolein NT NT NT <9.2 NT <0.70 <0.70 <0.70 <br /> Acrylonitrile NT NT NT <5.6 NT <0.26 <0.26 <0.26 <br /> W chloride NT NT NT <4.9 NT <0.14 <0.14 <0.14 <br /> Benzene NT NT NT 6.2 NT 4.6 4.7 4 <br /> Bromobenzene NT NT NT <0.35 NT <0.39 <D.39 <0.39 <br /> Bromochloromethane NT NT NT <0.25 NT w.42 <0.42 <0.42 <br /> Bromodichloromethane NT NT NT <0,25 NT W25 <0.25 <0.25 <br /> Bromoform NT NT NT 00.55 NT <D.18 <0.18 <0.18 <br /> Bromomethane NT NT NT <0.95 NT <0.61 x.61 <D.61 <br /> 2-butanone NT NT NT <3.5 NT <0.14 <0.1.4 12* <br /> n-butylbenzene NT NT NT <D.55 NT <0.38 <D.38 <0.38 <br /> -butylbenzene NT NT NT <0.45 NT <0.36 <D.36 <0.36 <br /> tert-butylbenzene NT NT NT <0.50 NT <0.35 <0.35 <0.35 <br /> Carbon Disulfide NT NT NT <6.8 NT <0.29 00.29 <0.29 <br /> Carbon tetrachloride NT NT NT <0.30 NT <0.37 <0.37 <0.37 <br /> Cfilorobenzene NT NT NT 0.39* NT 033" <1.7 <1.7 <br /> Chloroethane NT NT NT 3.6 NT 1.8 2.2 1.8* <br /> 2-chloroethyl vinyl ether NT NT NT <6.8 NT <0.22 <0.22 <0.22 <br /> Chloroform NT NT NT <0.35 NT <0.37 <0.37 <0.37 <br /> Chloromethane NT NT NT <0.70 NT <0.18 <0.18 <0.18 <br /> Chloroprene NT NT NT Q4 NT <D.10 <0.10 <0.10 <br /> 2-chlorotob=e NT NT NT <D.55 NT OA2" <1.7 <1.7 <br /> 4-chlorotoluene NT NT NT <0.60 NT <0.42 <0.42 <0.42 <br /> dibromochloromethane NT NT NT <0.30 NT <0.47 00.47 <0.47 <br /> 1,2-dibromo-3-chloropane NT NT NT <1.4 NT <0.64 <0.64 <0.64 <br /> 1,2-dibromoethane NT NT NT <0.20 NT <0.43 <0.43 <0.43 <br /> Dibromomethaae NT NT NT <0.45 NT <0.38 <0.38 <0.38 <br /> trans-14-dichloro-2-butene NT NT NT <8.4 NT <D.42 <0.42 <0.42 <br /> 1,2-dichtorobenzeae NT NT NT <0.55 NT 0.46" <1.4 <1.4 <br /> 1,3-Dichlorobenzene NT NT NT <0.65 NT <0.34 <0.34 <0.34 <br /> 1,4-Dichlorobenzene NT NT NT 5.6 NT 4.8 2.6 5.5 <br /> Dichlorodifluoromethane NT NT NT <0.45 NT <0.31 <0.31 <0.31 <br /> NR=Not Required <br /> *=Trace Concentration <br /> NT-Not Tested <br /> n:\consultingldatoWw,redlpmjectsWs\gmr179\791288\NC012405g2 <br />