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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> LEACHATE <br /> NORTH COUNTY SANITARY LANDFILL <br /> Units:mg/1,unless noted <br /> Sample Designation L-4 L4 <br /> Sampling Date 3/3/05 10/11/05 <br /> Consdtuenta of Cog <br /> Total Organic Carbon 80.3 NR <br /> Alkalinity,Bicarbonate 860 1250 <br /> Alkalinity,Carbonate <5.0 <5.0 <br /> Total Alkalinity 860 NR <br /> Cyanide NT NR <br /> Sulfide NT NR <br /> Semivolatile 9manic Cg=oxmds(uenl <br /> Benzoic Acid 1100 NR <br /> 4-Methylphenol 400 NR <br /> Phenol 90 NR <br /> Organochlorine Pesticides and PglvgWorin ted Biphenyl's (PCBs) <br /> All Compounds ND NR <br /> to mat d Herbicid_c/ven) <br /> All Compounds ND NR <br /> Metals <br /> Aluminum,Dissolved <0.01 NR <br /> Antimony,Dissolved <0.001 NR <br /> Arsenic,Dissolved 0.016 NR <br /> Barium,Dissolved 2.39 NR <br /> Beryllium,Dissolved <0.0002 NR <br /> Boron,Dissolved 0.5 NR <br /> Cadmium,Dissolved <0.0002 NR <br /> Chromium,Total Dissolved 0.009 NR <br /> Chromium Hexavalent <0.005 NR <br /> Cobalt,Dissolved 0.0143 NR <br /> Copper,Dissolved 0.006 NR <br /> Iron,Dissolved 2.09 NR <br /> Lead,Dissolved <0.0002 NR <br /> Manganese,Dissolved 22.6 NR <br /> Mercury,Dissolved <0.0001 NR <br /> Nickel,Dissolved 0.017 NR <br /> Selenium,Dissolved <0.002 NR <br /> Silver,Dissolved <0.001 NR <br /> Thallium,Dissolved <0.0002 NR <br /> Tin,Dissolved <0.001 NR <br /> Vanadium,Dissolved <0.002 NR <br /> Zinc,Dissolved 0.02 NR <br /> NR=Not Required <br /> NT=Not Tested <br /> "=Trace Concentration <br /> M n:\jWWata4Mjectsb4W179124Mt gw a�07-28- M M M M M M M M M M <br />