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HISTORICAL SUMMA*EE <br />ALYTICAL RESULTS <br />L <br />FOOTHILL SANITARY LANDFILL <br />Units: mg/l, unless noted <br />Sample Designation L-1 L-1 L-1 L-1 L-1 L-1 L-1 <br />Sampling Date 3/7/05_ 3/28/06 1/31/07 2/5/08 1/15/09 8/18/09 2/3/10 <br />Monitoring and Field Parameters <br />General Water Quality Parameters <br />emperature <br />NT <br />16.4 <br />II <br />18.3 <br />17.9 <br />23.718.5 <br />--_ I,I-Dichloroethane <br />Chloride <br />168 <br />251 <br />300 <br />34 <br />260 <br />NT <br />66 <br />Nitrate Nitrogen --- <br /><0.4 <br />0.06* <br />0.3 <br /><0.02 <br /><0.03 <br />NT <br /><0.026 <br />Total Dissolved Solids <br />3,650 <br />2,280 <br />1,900 <br />800 <br />1,500 <br />NT <br />720 <br />ulfate <br />II <br /><0.2 <br />0.3* <br />0.82 <br /><0.20 <br />NT <br />0.56 <br />pH (std. units) <br />6.12 <br />6.81 <br />6.35 <br />8.54 <br />6.6 <br />6.2 <br />6.72 <br />-_ <br />Electrical Conductivity (umhos/em) <br />- <br />3,470 <br />280 <br />3,070 <br />1,229 <br />2,415 <br />2,154 <br />1,217 <br />- Turbidity (NTU) field <br />NT <br />NT <br />13.7 <br />5L6 <br />NT <br />3.1.7 <br />NT <br />Calcium Dissolved <br />455 <br />398 <br />270 <br />140 <br />220 <br />NT <br />_ <br />120 <br />agnesmm, Dissolved <br />201 <br />302 <br />160 <br />63 <br />_ <br />120 <br />NT <br />51 <br />Potassium Dissolved <br />13 <br />_ _ <br />9.1 <br />3.8 <br />6.4 <br />NT <br />4.3 <br />odium Dissolved <br />146 <br />---1-1-0 <br />193 <br />190 <br />--- <br />44 <br />140 <br />NT <br />- - - _ <br />54 <br />Volatile Organic Compounds (u /1) <br />Benzene <br />NT <br />NT <br />NT <br />11 <br />14 <br />NT <br />15 <br />romochloromethane <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />10.23 <br />Bromodichloromethane <br />-_ NT ---NT <br />NT <br />NT <br />NT <br />NT <br /><0.13_ <br />Bromoform <br />NT <br />NT <br />_ <br />NT <br />NT <br />_ <br />NT <br />NT <br /><0.23 <br />Bromomethane <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />10-20 <br />Carbon Tetrachloride <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />10.18 <br />lorobenzene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />0.43 <br />Chloroethane <br /><0.2 <br />23 <br />15 <br />7 <br />6.1 <br />NT <br />3.9 <br />Chlorofoim _ <br />3 <br /><0.14 <br /><0.4 <br /><1.7 <br />10.33 <br />NT <br />10.0 -72 - <br />Chloromethane <br /><0.23-----2.1 <br /><0A <br />2.1* <br />10.36 <br />NT <br /><0.1 1 <br />i romochloromethane <br />NT _ <br />NT <br />NT <br />NT <br />NT <br />---- <br /><0.-077----------- <br />1,2-Dibromo-3-chloropropane <br />NT <br />_ <br />NT <br />NT <br />_NT <br />NT <br />_ <br />NT <br />NT <br /><0.44 <br />1,2-Dibromoethane <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br /><0.16 <br />Dibromomethane <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br /><0.19 <br />1,2 -Dichlorobenzene <br />_ NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />0.32 <br />- ichlorobenzene <br />NT <br />NT <br />NT <br />NT <br />NT <br />_ <br />NT <br /><0.060 <br />114 -Dichlorobenzene <br />NT <br />NT <br />NT <br />2.1* <br />1.7 <br />NT <br />---- <br />7.2 <br />Dichlorodifluoromethane <br />NT_ <br />NT <br />NT <br />NT <br />0.56* <br />NT <br />--_ I,I-Dichloroethane <br />9 <br />_ <br />2.7 <br />10 <br />_ <br />6.3 <br />5 <br />NT <br />-_ 1,2-Dichloroethane (EDC) _ <br /><0.18 <br />2.4 <br />7.9 <br />8 <br />9.1 <br />NT <br />-- _I,I-Dichloroethene - <br />10.19 <br />0.58 <br />65 <br />5.9 <br />2.3 <br />NT <br />cis- 1,2-Dichloroethene __.- -_-_ <br />- <br />10.17 <br />8.1 <br />4.2 <br />9.4 <br />18 <br />NT <br />trans - I Dichloroethene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />,_- [chloropropane <br />10.17 <br />0.66 <br />10.4 <br />11.8 <br />1.2 <br />---- <br />NT <br />cis-1,3-Dichloropropene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />trans-1,3-Dichloropropene <br />NT <br />NT <br />NT <br />_ <br />NT <br />NT <br />NT <br />Ethylbenzene <br />2 <br />4.7 <br /><0.41 <br />7 <br />12 <br />NT <br />Hexachiorobutadiene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Methylene Chloride <br />150 <br />7.5 <br />12 <br />3 <br />NT <br />Methly tert-butyl ether <br />10 <br />490 <br />_ _7.6*_ <br />Ion <br />_ <br />» <br />_ <br />ion <br />nir <br />Styrene <br />NT <br />NT_N_T <br />NT__ <br />- NT___ <br />NT <br />1,1,1,2 -Tetrachloroethane <br />_ <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />T1,1,2,2-Tetrachloroethane <br />1, 1,2,2-Tetrachloroethane <br />NT <br />NT <br />NT <br />NT <br />NT <br />- <br />NT <br />etrachloroethene (PCE) <br />4 <br />0.34* <br />10.38 <br />3 <br />10.49 <br />NT <br />Toluene -- <br />38 <br />71 <br />1.9* <br />51 <br />15 <br />NT <br />1,2,4-Trichlorobenzene <br />NT <br />NT <br />----- <br />NT <br />--------- <br />NT <br />NT <br />1,1,1 -trichloroethane_ _ <br />16 <br />1_0.14 <br /><0.14 <br />_NT <br /><2,0 <br /><0.46 <br />NT <br />1,1,2 -Trichloroethane--- <br />_ NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />oe <br />Trichlorthene (TCE) <br />6 <br />-- <br />1.3 <br />1.9* <br />---- <br />4 <br />0.42* <br />- <br />NTT <br />n:\consulting\data\shared\projects\xls\gtnr\79\791289\FH-Hist R2.xls <br />_10.1 I <br />1.6 <br />21 <br />10.097 <br />-0.098 <br />10.079 <br />5 <br />,0.12 <br />10 28 <br />52 <br />11 <br /><0.093 <br /><0II <br />10.14 <br />0.47 <br />47 <br /><O.17 <br /><0.081 <br /><0.21 <br />1.1 <br />