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M = ® ® ® M M M ® M = = M ® ® = M <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />NORTH COUNTY SANITARY LANDFILL <br />G-4 <br />Units: m , unless noted <br />Sample Designation <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />G4 <br />G-4 <br />G-4 <br />G-4 <br />G-4 <br />Sampling Date <br />7/11/96 <br />10/1/96 <br />1/16/97 <br />4/9/97 <br />7/10/97 <br />10/1/97 <br />1/28/98 <br />4/16/98 <br />7/10/98 <br />10/5/98 <br />1/8/99 <br />4/26/99 <br />7/20/99 <br />10/19/99 <br />3/l/00 <br />4/26/00 <br />8/16/00 <br />10/5/00 <br />1/9/01 <br />4/11/01 <br />7/31/01 <br />Monitoring and Field Parameters <br />General Water Orality Parameters <br />pH (std. units) (field) <br />6.88 <br />7.12 <br />8.90 <br />8.11 <br />7.90 <br />TIS <br />6.82 <br />6.88 <br />7.90 <br />7.52 <br />6.81 <br />7.39 <br />7.16 <br />7.07 <br />7.39 <br />8.02 <br />7.73 <br />7.02 <br />7.18 <br />7.24 <br />7.18 <br />Electrical Conductivity (umhos/cm) (field) <br />236 <br />221 <br />290 <br />280 <br />171 <br />231 <br />223 <br />220 <br />205 <br />230 <br />248 <br />210 <br />212 <br />215 <br />211 <br />215 <br />216 <br />216 <br />236 <br />100 <br />100 <br />Temperature (°C) (field) <br />21.3 <br />20.4 <br />15.7 <br />22.5 <br />23.0 <br />23.0 <br />18.5 <br />24.0 <br />22.9 <br />23.3 <br />12.5 <br />19.7 <br />20.1 <br />20.6 <br />19.2 <br />19.8 <br />20.5 <br />20.3 <br />20.2 <br />19.0 <br />21.9 <br />Oxygen Reduction Potential (ORP) (field) <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Dissolved Oxygen (D.0) (field) <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Turbidity(NTU) field <br />1.7 <br />2.4 <br />0.040 <br />4.810 <br />2.110 <br />0.200 <br />0.6 <br />0.5 <br />0.8 <br />0.5 <br />1.7 <br />0.3 <br />0.6 <br />2.0 <br />2.6 <br />0.53 <br />0.34 <br />0.47 <br /><I <br />4.90 <br />1.71 <br />Chloride <br />7 <br />7 <br />6 <br />6 <br />6 <br />7.70 <br />8.2 <br />8.3 <br />8.4 <br />7.2 <br />5.9 <br /><0.01 <br />9.6 <br />744 <br />7.74 <br />8 <br />8.07 <br />7.91 <br />8.03 <br />7.83 <br />7.2 <br />Total Hardness (calculated) <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Total Dissolved Solids <br />220 <br />190 <br />200 <br />199 <br />174 <br />161 <br />183 <br />30 <br />172 <br />111 <br />147 <br />155 <br />167 <br />183 <br />185 <br />160 <br />183 <br />156 <br />173 <br />185 <br />160 <br />Chemical Oxygen Demand <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nitrate Nitrogen <br />1 <br />1.1 <br />1.0 <br />1.0 <br />1.2 <br />0.99 <br />1.3 <br />1.2 <br />1.2 <br />1.2 <br />1.28 <br />1.29 <br />0.98 <br />1.13 <br />1.1 <br />1.18 <br />1.21 <br />1.21 <br />1.21 <br />1.28 <br />1.1 <br />Sulfate <br />4 <br />4 <br />3 <br />3 <br />3 <br />3.70 <br />4.3 <br />4.1 <br />4.2 <br />4.1 <br />4.5 <br />3.8 <br />4 <br />4.03 <br />5.42 <br />5.63 <br />6.35 <br />5.27 <br />5.36 <br />5.3 <br />5.1 <br />etals <br />Calcium <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Magnesium <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Potassium <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Sodium <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Volatile Organic Compounds lue/fl <br />Benzene <br /><0.5 <br /><0.5 <br />10.5 <br /><0.08 <br /><0.5 <br />I.I. <br /><L0 <br /><LI <br /><L0 <br /><1.0 <br /><L0 <br /><L0 <br /><1.01.04 <br />4.05 <br /><O.OS <br /><0.05<.OS <br /><0.05<0.054.05 <br />Bromobenzene <br /><0.1 <br /><0.1 <br /><.I <br />4.1 <br /><0.1 <br /><0.74 <br /><0.74 <br /><0.74 <br /><0.74 <br /><0.74 <br /><0.74 <br /><0.74 <br /><0.74 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br />10.07 <br />Bromochloromethane <br /><0.2 <br /><0.2 <br /><0 1 <br /><0.1 <br /><0.1 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><0.05 <br /><0.05 <br /><0.05 <br /><0.05 <br />10.05 <br />10.05 <br /><0.05 <br /><0.05 <br />Bromodichloromethane <br />- <0.4 <br /><0.4 <br />10.2 <br /><0.2 <br /><0.2 <br /><090 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.05 <br /><0.05 <br /><0.05 <br />4.05 <br />10.05 <br />10.05 <br />10.05 <br />10.05 <br />Bromoform <br /><02 <br /><02 <br /><0.2 <br /><0.2 <br /><0.2 <br /><1.4 <br /><14 <br /><1.5 <br /><1.4 <br /><1.4 <br /><1.4 <br /><1.4 <br /><1.4 <br /><0.11 <br /><0.11 <br />10.11 <br /><0.II <br /><0.11 <br /><0.11 <br /><0.II <br /><0.11 <br />B-anethane <br /><0.2 <br /><0.2 <br /><0.4 <br />10.4 <br /><0.4 <br /><l.l <br />4.1 <br /><1.1 <br /><l.I <br /><IA <br /><I.1 <br /><l.I <br /><1.1 <br /><0.38 <br /><0.38 <br /><0.38 <br />10.38 <br /><0.38 <br /><0.38 <br /><0.38 <br /><0.38 <br />n-butylbenzene <br /><0.3 <br /><0.2 <br /><0.2 <br />N.2 <br /><1.6 <br /><1.6 <br /><1.6 <br /><1.6 <br />11.6 <br /><1.6 <br /><I.6 <br /><I.6 <br /><.I1 <br />10.11 <br /><0.11 <br /><0.11 <br />10.11 <br /><0.11 <br /><0.11 <br />10.11 <br />____:SO.3 <br />sec-butylbenzene <br /><0.3 <br /><0 3 <br /><0.3 <br /><0.3 <br /><0.3 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><15 <br /><0.09 <br /><0.09 <br /><0.09 <br />10.09 <br /><0.09 <br /><0.09 <br /><0.09 <br /><0.09 <br />tert-butylbenzene <br />10.3 <br />N.3 <br /><0.3 <br /><0.3 <br /><0.3 <br /><1.3 <br /><1.3 <br /><1.3 <br /><1.3 <br /><1.3 <br />11.3 <br /><I.3 <br /><1.3 <br />10.09 <br /><0.1 <br /><0.1 <br /><0.1 <br /><0.I <br /><0.1 <br /><0.1 <br /><0.1 <br />Carbon tetrachloride <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.3 <br /><1.3 <br /><1.3 <br /><1.3 <br /><1.3 <br /><1.3 <br />11.3 <br /><0.06 <br /><0.06 <br /><0.06 <br /><0.06 <br /><0.06 <br /><0.06 <br /><0.06 <br /><0.06 <br />Chlorobenzene <br />10.1 <br /><.I <br />NT <br />NT <br />NT <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><0.90 <br /><.90 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br />10.07 <br />10.07 <br />10.07 <br /><0.07 <br />Chloroethane <br /><.3 <br /><0.3 <br /><0.3 <br /><0.25 <br /><0.3 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><0.II <br />4.11 <br /><0.11 <br /><0.II <br /><0.II <br /><.II <br /><.I1 <br /><.II <br />Cldoroform <br /><0.2 <br /><0.2 <br />10.2 <br /><0.2 <br /><0.2 <br /><0.83 <br /><0.83 <br /><0.84 <br /><0.83 <br /><0.83 <br /><0.83 <br /><0.83 <br /><0.83 <br /><0.06 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br /><0.07 <br />10.07 <br />Chloromethane <br /><0.3 <br /><0.3 <br /><0.3 <br /><0.3 <br /><0.3 <br /><0.53 <br /><0.53 <br />10.53 <br />10.53 <br /><O.S3 <br />10.53 <br />10.53 <br /><0.53 <br /><0.14 <br />4.14 <br /><0. 14 <br /><0. 14 <br /><0.14 <br /><0.14 <br /><0. 14 <br /><0. 14 <br />2-chlorotoluene <br /><0.2 <br /><0.2 <br /><0.2 <br />102 <br /><0.2 <br /><0.71 <br /><0.71 <br /><0.71 <br />4.71 <br /><0.71 <br /><0.71 <br />4.71 <br /><0.71 <br />10.11 <br />4.11 <br />10.11 <br /><0.11 <br /><0.I I <br /><0.1 t <br />4.11 <br />4. 11 <br />4-clilorotoluene <br />10.2 <br />10.2 <br /><.2 <br /><.2 <br />10.2 <br /><l.l <br /><L1 <br /><L1 <br /><t.t <br /><l.l <br /><l.l <br /><l.l <br /><LI <br />10.12 <br />4.12 <br />4.12 <br />4.12 <br />10.12 <br />4.12 <br /><0.12 <br />4.12 <br />dibromochloromethane <br /><0.I <br /><0.1 <br />NT <br />NT <br />NT <br />4.97 <br />4.97 <br />4.97 <br />4.97 <br /><0.97 <br /><0.97 <br /><0.97 <br />4.97 <br />10.06 <br />4.06 <br />4.06 <br /><.06 <br />10.06 <br />10.06 <br />10.06 <br />10.06 <br />1,2-dibromo-3-chloro ane <br /><.3 <br /><0.3 <br /><.3 <br /><0.3 <br /><.3 <br /><1.2 <br />11.2 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br />11.2 <br /><1.2 <br /><0.29 <br />4.29 <br />4.29 <br />4.29 <br />10.29 <br /><0.29 <br />10.29 <br /><0.29 <br />1,2-dibromoethane <br />NT <br />NT <br />4.5 <br /><0.5 <br /><0.5 <br /><0.94 <br /><0.94 <br />4.94 <br />4.94 <br />4.94 <br />4.94 <br /><0.94 <br /><0.94 <br /><0.04 <br /><0.04 <br /><0.04 <br />4.04 <br /><0.04 <br />4.04 <br />4.04 <br /><0.04 <br />Dibromomedune <br /><.4 <br /><.4 <br /><0.4 <br /><0.4 <br /><.4 <br /><1.5 <br /><1.5 <br /><1.5 <br /><15 <br /><1.5 <br /><1.5 <br /><1.5 <br /><L5 <br /><0.09 <br /><0.09 <br /><0.09 <br /><0.09 <br />4.09 <br />4.09 <br />4.09 <br /><0.09 <br />1,2 -dichlorobenzene <br /><0.1 <br /><0.1 <br /><0.1 <br />10.1 <br /><0.1 <br /><0.95 <br />4.95 <br /><0.96 <br /><0.95 <br />4.95 <br /><0.95 <br /><0.95 <br />4.95 <br />4.11 <br />4.11 <br />10.11 <br />10.11 <br />10.11 <br />4.11 <br />4.11 <br />10.11 <br />1,3 -Dichlorobenzene <br />NR <br /><.I <br />4.1 <br />4.10 <br />10.1 <br /><I.1 <br /><I.1 <br /><I.1 <br /><1.1 <br /><l.I <br /><IA <br /><1.1 <br /><1.1 <br /><0.13 <br />4.13 <br /><0. 13 <br /><0.13 <br />4.13 <br /><.13 <br /><0A3 <br /><0.13 <br />1,4 -Dichlorobenzene <br />NR <br /><0.1 <br /><0.1 <br /><.II <br /><.1 <br /><0.89 <br />1.89 <br /><0.90 <br />1.89 <br />1.89 <br />1.89 <br /><0.89 <br />1.89 <br />4.11 <br /><.1-I<0 <br />11 <br /><.II <br /><.I1 <br />1.11 <br />4.11 <br /><0.1I <br />Dichlorodifluoromethane <br />4.3 <br /><0.3 <br /><0.3 <br /><0.3 <br /><.3 <br />1.19 <br />1.19 <br />1.19 <br />1.19 <br /><0. 19 <br /><0.19 <br />1.19 <br />4.19 <br /><0.07 <br />1.09 <br />1.09 <br />4.09 <br />1.09 <br /><0.09 <br /><0.09 <br />1.09 <br />1,1-Dichloroethane <br />4.2 <br /><.2 <br />4.2 <br />1.08 <br /><0.2 <br /><1.2 <br />11.2 <br /><1.2 <br />1.72 <br /><1.2 <br /><1.2 <br /><1.2 <br /><1.2 <br />1.04 <br />1.04 <br />1.04 <br />4.04 <br />1.04 <br />4.04 <br />1.04 <br />1.04 <br />1,2- <br />10.5 <br />4.5 <br />4.5 <br />1.12 <br /><.5 <br /><l.I <br /><I.1 <br /><1.1 <br /><L t <br /><l.l <br /><I.1 <br />11.1 - <br /><I.1 <br /><0.08 <br /><0.08 <br /><0.08 <br />1.08 <br />4.08 <br />1.08 <br />1.08 <br />1.08 <br />1,1-dichloroethene <br /><0.4 <br />4.4 <br /><.4 <br />4.4 <br /><.4 <br />1.72 <br /><0.72 <br />1.73 <br /><0.72 <br />4.72 <br /><0.72 <br /><0.72 <br /><0.72 <br /><0.05 <br /><0.06 <br /><0.06 <br />4.06 <br /><0.06 <br /><0.06 <br />1.06 <br />4.06 <br />cis-1,2-Dichloroethene <br /><.1 <br />4.1 <br /><.1 <br /><0.09 <br /><0.1 <br />1.82 <br />10.82 <br /><0.82 <br /><0.82 <br /><0.82 <br /><0.82 <br /><0.82 <br />4.82 <br /><0.04 <br /><0.09 <br /><0.09 <br /><0.09 <br />1.09 <br />4.09 <br />1.09 <br />1.09 <br />trans-l,2-dichlomethene <br /><.2 <br /><0.2 <br /><0.2 <br /><.2 <br /><0.2 <br />1.94 <br />10.94 <br />1.95 <br />1.94 <br />10.94 <br />1.94 <br /><0.94 <br />1.94 <br />1.05 <br />1.09 <br /><0.09 <br /><0.09 <br /><0.09 <br />1.09 <br />1.09 <br />4.09 <br />4.5 <br />4.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />1.15 <br /><0. 15 <br /><0.15 <br />4.15 <br />10.15 <br /><0.15 <br />10.15 <br />@15 <br /><0.07 <br />4.07 <br />1.07 <br /><0.07 <br />4.07 <br />1.07 <br /><0.07 <br /><0.07 <br />1,2-dichloropropane <br />4.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><l.l <br /><1.1 <br /><1.1 <br /><I.1 <br /><I.1 <br /><1.1 <br /><I.I <br /><1.1 <br />4.09 <br />1.09 <br />4.09 <br /><0.09 <br /><0.09 <br /><0.09 <br />1.09 <br /><0.09 <br />1,3-dichloropropone <br />10.4 <br />4.4 <br />10.4 <br /><I.0 <br /><I.0 <br /><1.0 <br /><1.0 <br /><I.0 <br /><I.0 <br />11.0 <br /><1.0 <br /><0.04 <br />10.19 <br />1.19 <br /><0.19 <br />1.19 <br />1.19 <br /><0. 19 <br /><0. 19 <br />2,2-dichloropropane <br />10.4 <br /><.4 <br /><.4 <br /><.4 <br />10.4 <br /><.4 <br />4.4 <br /><l.1 <br /><l.l <br /><I.l <br /><I.1 <br /><I.1 <br /><l.l <br /><1.1 <br /><l.l <br />1.07 <br />1.07 <br />1.07 <br />1.07 <br />1.07 <br />1.07 <br />1.07 <br />1.07 <br />1,1-dichloropropene <br /><0.5 <br /><0.5 <br /><.5 <br /><.5 <br /><.5 <br />4.82 <br /><0.82 <br /><0.83 <br />1.76 <br />1.76 <br /><0.76 <br /><0.76 <br />1.76 <br /><0.03 <br /><0.08 <br /><0.08 <br />1.08 <br />10.08 <br />1.08 <br />4.08 <br /><0.08 <br />Cis- 1,3-dichloropro ene <br /><0.5 <br /><0.5 <br /><0.5 <br /><.5 <br /><.5 <br /><l.I <br /><1.1 <br /><I.1 <br /><l.I <br /><l.l <br /><l.l <br /><1.1 <br /><I.1 <br /><0.07 <br /><0.07 <br /><0.07 <br />1.07 <br />1.07 <br /><0.07 <br />1.07 <br />1.07 <br />tmns-1,3-dichloro ropene <br />Ethylbenzene <br /><0.1 <br /><0.1 <br /><0.1 <br /><0.07 <br /><0.1 <br />4.92 <br /><0.92 <br />1.92 <br /><0.92 <br /><0.92 <br /><0.92 <br /><0.92 <br />1.92 <br /><.I <br />4.1 <br /><.1 <br /><.1 <br />4.1 <br /><.1 <br />10.1 <br /><.I <br />Hexachlorobutadiene <br /><0.4 <br /><0.4 <br /><0.4 <br /><.4 <br /><.4 <br />{0.18'} <br /><.2 <br /><.3 <br />4.20 <br /><0.20 <br /><0.20 <br /><0.20 <br />4.20 <br />1.16 <br />1.16 <br />4.16 <br /><0. 16 <br />1.16 <br />4.16 <br /><0. 16 <br /><0.16 <br />Isoprop (benzene <br /><0.3 <br />4.3 <br /><1.2 <br /><1.2 <br /><1.2 <br />d.2 <br /><1.2 <br /><1.3 <br />_._ <br />.. <br />11.2 <br />-. <br /><1.2 <br />_ <br /><1.2 <br />_ <br /><1.2 <br />_ <br />< <br />' <br /><0.1 <br />4.1 <br />11 <br /><'' I <br /><.I <br />.nn <br />4.1 <br />mn <br />10.1 <br />mn <br />10.1 <br /><n11 <br /><0.1 <br /><nn <br />