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m m m <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />NORTH COUNTY SANITARY LANDFILL <br />Units' mg/l, unless noted - <br />Sample Designation 6-1 G-1 G -I <br />Sampling Date 07/31/12 01/23/13 07/29/13 <br />Monitariae and Field Parameters <br />6.69 <br />Tenrperotrue (°C) (Geld) _21 0 17.9 21.4 <br />Oxygen Reduction Polenlial (ORP) (Geld) +137 +147 21 <br />Dissolved OxvRen (DO) (Geld) 1.44 0.76 1.46 <br />Chloride <br />8.3 <br />8.2 <br />8.9 <br />Total Hardness (calculated) <br />120 <br />71 <br />350 <br />Total Dissolved Solids <br />250 <br />300 <br />180 <br />Chemical O_xygea Demand <br />39 <br />23 <br />88 <br />Nitrate Nitrogen <br />NR <br />1.5 <br />NR <br />Sulfate <br />NR <br />3.8 <br />NR <br />MetBI4 <br />IA5 <br /><0.15 <br /><0.15 <br />Calcium <br />23 <br />15 <br />87 <br />Magnes ua, <br />14 <br />7.9 <br />31 <br />q-li , NR 39 NR <br />Benzene <0.083 <0.083 <0.083 <br /><0.24 <br /><0.25 <br />n-bulylbtar.ne <0.I1 <0.11 <0.11 <br />sec-bntylbenzene <0.15 <0. 15 <0.15 _ <br />tart-butylbenzene <0. 13 <0. 13 <0.13 <br />- -- <br />ra.h.., rars�la„dde <0.18 <0.18 <0.18 <br />_ Chloroethane <0.14 <0.14 <0.14 <br />Chlornf n <0.12 <0.12 <0.12 <br /><0.20 <br />_ 4-chlorotoluene <0.15 <0.15 <0.15 <br />dibronrochlo-aelhane <0.13 <0 13 <0. 13 <br />1,2-dibromo-3-chloropane <0.44 <0.44 <0.44 <br />1,2 -dib -n -limes <0. 16 <016 <016 <br />Dihronrnmetl,ane <0.24 <0.24 <0.24 _ <br />1,3-Dicldorobenzene <br />1,4-Dich1orobenzene <br /><0.15 <br /><0.62 <br /><0.15 <br /><0.62 <br /><0.15 <br /><0.62 <br />Di6lorodi0uoromethana <br /><0.099 <br /><0.099 <br /><0.099 <br />I,1-Dichloroel6mre <br /><0.II <br /><0.II <br /><0.II <br />1, 2-Dichlorcethane <br /><0.17 <br /><0 17 <br /><0 17 <br />l,l-dichloroethene <br /><0.18 <br /><O.18 <br /><0.18 <br />cis-l,2-Dicldoroethene <br /><0.085 <br /><0.085 <br /><0.085 <br />trans-1,2-dichloroethene <br />IA5 <br /><0.15 <br /><0.15 <br />_ <br />1,2-dichloropropane <br />1,3-dicbloropropene <br /><0.086 <br /><0.086 <br /><0.086 _ <br />2.2-dichloroorooane <br /><0.13 <br /><0. 13 <br /><0.13 <br />NR = No[ Required <br />NT = Not Tested <br />= Trace Coaceaustion <br />[1) This data point appears anomalous and therefore was not used for statistical purposes. <br />(1) Parameter also detected in care or nrore quality control blanks <br />