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HISTORICAL ANALYTICAL RESULTS <br /> SURFACE WATER <br /> CORRAL HOLLOW SANITARY LANDFILL <br /> SW-2 <br /> Units:mg/I,unless noted <br /> Sample Designation SW-2 SW-2 SW-2 SW-2 SW-2 SW-2 SW-2 SW-2 SW-2 SW-2 <br /> Sampling Date 04/19/99 02/19/00 03/05/01 01/08/02 12/17/02 02/17/04 01/05/05 01/03/06 04/15/10 1/27/2011 <br /> Monitorins and Field Parameters <br /> General Water Quality Parameters <br /> Temperature,Field(°C) 26 16.3 15.4 11.1 12.6 14.0 14.8 12.1 25.8 12.1 <br /> Electrical Conductivity(umhos/cm) 1,648 1,261 583 2,512 330 2591 316 228 1492 2068 <br /> pH,field(units) 7.89 6.28 7.8 8.37 6.91 8.54 6.41 6.31 8.3 8.13 <br /> Turbitity,Field(NTU) 2.7 >200 >200 118.00 7200 39.7 46.7 >200 1076 36.1 <br /> Total Dissolved Solids 1765 846 383 1,700 500 1800 1800 420 980 1400 <br /> Total Suspended Solids 4 1530 756 8 NR NR NR NR NR NR <br /> Chloride 163 93.9 32.7 300 84 320 300 33 140 230 <br /> Sulfate 390 306 108 700 200 650 620 83 350 470 <br /> Nitrate-Nitrite as Nitrogen 0.027 0.61 0.131 0.17 0.12 <0.045 <0.23 1.1 <0.014 0.21 <br /> Calcium 78 120 530 48.6 89 72 <br /> Potassium 15 5.2 31 10.2 6.7 6.6 <br /> Magnesium 53 75 270 26.5 50 60 <br /> Sodium 80 360 340 54.6 210 320 <br /> Volatile Organic Compounds(ug/1) <br /> Acetone 3.4 8.5 ND ND <br /> All Other Compounds ND ND <br /> Semivolatile Organic Compounds(EPA Method 8270C) <br /> All Compounds ND ND <br /> Constituents of Concern Parameters <br /> Alkalinity,Bicarbonate NR 210 NR NR 170 320 400 140 300 360 <br /> Alkalinity,Carbonate NR <0.808 NR NR <0.54 19 30 >2.2 17 18 <br /> Total Alkalinity NR 210 NR NR 170 340 430 NR 270 320 <br /> Cyanide,Total NR <0.002 NR NR NR NR <0.025 NR <0.0028 NR <br /> Sulfide NR <0.5 NR NR NR NR 0.12 NR <0.050 NR <br /> Total Organic Carbon NR 9.55 NR NR NR NR 6.3 NR 5.6 NR <br /> Chemical Oxygen Demand NR 90.6 NR NR NR NR NR NR NR NR <br /> Dissolved Oxygen NR 4.14 NR NR NR NR NR NR NR NR <br /> Oil and Grease NR <1 NR NR NR NR NR NR NR NR <br /> Organic compounds detected in one or more samples are listed. <br /> NR=Not Requested <br /> ND=Not Detected <br /> ISV=Insufficient Volume <br />