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HISTORICAL SUMMARY OF MONITORING RESULTS <br />SURFACE WATER <br />NORTH COUNTY SANITARY LANDFILL <br />Units: Ing/l, unless noted ---- <br />Semple Designation S-1 S-1 S-1 S-1 S-1 S-1 S-1 S-1 S-1 S-1 S-1 S-1 <br />Sampling Date 419/97 12/8/97 1/28198 1/21/99 1/24/00 3/5/01 1/2/02 12/17/02 2/18/04 1/10/05 1/3/06 1/31/11 <br />Temperature (°C) NT 11.3 15.1 151 16.6 15.7 14.1 12.1 15.0 13.9 12.3 NR <br />Chloride NT 88 47 21 185 69.6 75 22 32 33 10 131 <br />Nitrate Nitrogen NT 10.012 9.3 1.6 <0.0043 1.01 1.8 <0.045 0.77 <0.23 6 0.3 <br />Total Dissolved Solids NT 580 615 198 1,630 238 330 220 190 240 230 970 <br />Sulfate NT 35 73 21 124 15.2 24 13 6.0 16 15 56.6 <br />pH (std units) <br />NT <br />7.4 <br />7.14 <br />7.04 <br />7.11 <br />7,74 <br />6.93 <br />6.97 <br />6.83 <br />6.43 <br />6.91 <br />7.71 <br />Electrical Conduct ity (undws/cm) <br />NT <br />869 <br />830 <br />263.6 <br />148.9 <br />347 <br />330 <br />374 <br />153 <br />216 <br />237 <br />1470 _ <br />Turbidity (NTU) <br />NT <br />168 <br />4.8 <br />52.2 <br />>200 <br />>200 <br />153 <br />127.9 <br />>200 <br />63.6 <br />>200 <br />16.4 <br />Total Suspended Solids <br />NT <br />365 <br />9 <br />17 <br />380 <br />8 <br />3 <br />83 <br />55 <br />34 <br />33 <br />NR <br />Alkalinity as CaCO3, Total <br />NT <br />NR <br />287 <br />26 <br />474 <br />37.6 <br />66 <br />36 <br />24 <br />100 <br />46 <br />427 <br />AlkalinityBicarbonate <br />NT <br />NR <br />287 <br />NR <br />474 <br />376 <br />66 <br />36 <br />24 <br />100 <br />46 <br />520 <br />Alkalinity Carbonate NT NR <0.55 NR <0,808 10.808 <I.0 10.54 <5.0 <5.0 <2.2 110 <br />AlkalinityHydroxide NR NR NR NR NR NR NR NR NR NR NR <10 <br />r•,.a,te NT NR NR NR 0.0685 NR NR NR NR 19.025 NR NR <br />Sulfide <br />NT <br />NR <br />NR <br />NR <br />7.03 <br />NR <br />NR <br />NR <br />NR <br />10.10 <br />NR <br />NR <br />Total Organic Carbon <br />NT <br />NR <br />NR <br />NR <br />180 <br />NR <br />NR <br />NR <br />NR <br />75 <br />NR <br />NR <br />Hardness, Total <br />NT <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />308 <br />Chemical Ox en Demand <br />NT <br />NR <br />NR <br />NR <br />502 <br />NR <br />NR <br />NR <br />NR <br />100 <br />NR <br />169 <br />Dissolved Ox gen <br />NT <br />3.16 <br />NR <br />NR <br />1.01 <br />NR <br />10.15 <br />1.86 <br />NR <br />7.3 <br />0.73 <br />3.74 <br />M9111111- <br />etalsCalcium, <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Calcium,Total <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />23 <br />NR <br />66.3 <br />Magnesium, Total <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />13 <br />NR <br />34.7 <br />Potassium, Total <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />II <br />NR <br />145 <br />Sodium, Total <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />8.6 <br />NR <br />49.7 <br />Conslltuents of Concern Parameters <br />Oil and Grease <br />NR <br />NR <br />NR <br />NR <br />3.91 <br />NR <br />NR <br />NR <br />NR <br />15.0 <br />NR <br />NR <br />Volatile Or ani omnol"As fuldll <br />Toluene <br />Metals <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />0.658 <br />Aluminum, Total <br />NR <br />NR <br />NR <br />NR <br />1.13 <br />NR <br />NR <br />NR <br />NR <br /><0.20 <br />NR <br />NR <br />Antimony, Total <br />NR <br />NR <br />NR <br />NR <br /><0.0069 <br />NR <br />NR <br />NR <br />NR <br /><0.20 <br />NR <br />NR <br />Arsenic, Total <br />NR <br />NR <br />NR <br />NR <br /><0.0096 <br />NR <br />NR <br />NR <br />NR <br />0.25 <br />NR <br />NR <br />Barium, Total <br />NR <br />NR <br />NR <br />NR <br />0.215 <br />NR <br />NR <br />NR <br />NR <br /><0.20 <br />NR <br />NR <br />Beryllium, Total <br />NR <br />NR <br />NR <br />NR <br />10.0006 <br />NR <br />NR <br />NR <br />NR <br /><0.020 <br />NR <br />NR <br />Boron, Total <br />NR <br />NR <br />NR <br />NR <br />0.253 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cadmium, Total <br />NR <br />NR <br />NR <br />NR <br /><0.0018 <br />NR <br />NR <br />NR <br />NR <br /><0.020 <br />NR <br />NR <br />Chromium, Total Dissolved <br />NR <br />NR <br />NR <br />NR <br />0.0106 <br />NR <br />NR <br />NR <br />NR <br />10.020 <br />NR <br />NR <br />Chrnmhr,n Ne> -h,,nt <br />NR <br />NR <br />NR <br />NR <br />10.0018 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cobalt, Total <br />Copper, Total <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0014 <br />0.0355 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.080 <br /><0.020 <br />NR <br />NR <br />. NR <br />NR <br />Iron, Total <br />NR <br />NR <br />NR <br />NR <br />3.49 <br />NR <br />NR <br />NR <br />NR <br />0.74 <br />NR <br />NR <br />Lead, Total <br />NR <br />NR <br />NR <br />NR <br />10.0099 <br />NR <br />NR <br />NR <br />NR <br /><0.20 <br />NR <br />NR <br />Man arose, Total <br />NR <br />NR <br />NR <br />NR <br />0.974 <br />NR <br />NR <br />NR <br />NR <br /><0.020 <br />NR <br />NR <br />Mercury, Total <br />NR <br />NR <br />NR <br />NR <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br /><0.0002 <br />NR <br />NR <br />Molybdenum, Total <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nickel, Total <br />NR <br />NR <br />NR <br />NR <br />0.0327 <br />NR <br />NR <br />NR <br />NR <br />0.13 <br />NR <br />NR <br />Selenium, Total <br />NR <br />NR <br />NR <br />NR <br /><0.018 <br />NR <br />NR <br />NR <br />NR <br /><0.20 <br />NR <br />NR <br />Silver, Total <br />. <br />NR <br />.••. <br />NR <br />.•n <br />NR <br />ern <br />NR <br />19.0013 <br />NR <br />NR <br />NR <br />NR <br />0.073 <br />Un <br />NR <br />NR <br />NR <br />NR <br />Thallium,Tmal <br />NR <br />NR <br />NR <br />NR <br /><0.012 <br />NR <br />NR <br />NR <br />NR <br />0.29 <br />NR <br />NR <br />Tin, Total <br />NR <br />NR <br />NR <br />NR <br /><0.1264 <br />NR <br />NR <br />NR <br />NR <br /><0.10 <br />NR <br />NR <br />Vanodium, Total <br />NR <br />NR <br />NR <br />NR <br />0.066 <br />NR <br />NR <br />NR <br />NR <br /><0.080 <br />NR <br />NR <br />Zinc, Total <br />NR <br />NR <br />NR <br />NR <br />0.395 <br />NR <br />NR <br />NR <br />NR <br /><0.080 <br />NR <br />NR <br />[ 11 pH meter was not functioning correctly <br />[21 These data appear to be anomalous and <br />are not used in the statistical evaluation. <br />NR = Not Required NT = Not Tested -dry <br />--- - <br />