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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />LEACHATE <br />NORTH COUNTY SANITARY LANDFILL <br />Units' mg/I unless anted <br />Sample Designation <br />Smnping Date <br />L-3 <br />1/16/97 <br />L-3 <br />4/9/97 <br />L-3 <br />7/10/97 <br />L-3 <br />10/1/97 <br />L-3 <br />1/18/98 <br />L-3 <br />4/16/98 <br />L-3 <br />7/10/98 <br />L-3 <br />10/5/98 <br />L-3 <br />1/5/99 <br />L-3 <br />4/26/99 <br />L-3 <br />7/20/99 <br />L-3 <br />10/19/99 <br />L-3 <br />3/2/00 <br />L-3 <br />4/26/00 <br />L-3 <br />8/16/00 <br />L-3 <br />10/5/00 <br />L-3 <br />3/5/01 _ <br />L-3 <br />4/12/01 <br />L-3 <br />7/31/01 <br />L-3 <br />10/10/01 <br />Monitorine and Field Paramelers <br />General Water Quality parameters <br />NR <br />NR <br />NR <br />17 <br />NT <br />NT <br />NT <br /><1.0 <br />NT <br />NT <br />NT <br />8.71 <br />NT <br />NT <br />NT <br />4.15 <br />NT <br />NT <br />NT <br />3.8 <br />PH (std. units) <br />6.05 <br />7.38 <br />7.16 <br />6.32 <br />6.05 <br />6.33 <br />6.74 <br />6.92 <br />6.68 <br />6.47 <br />6.33 <br />6.8 <br />6.47 <br />6.69 <br />6.28 <br />6.45 <br />6.64 <br />7.29 <br />6.34 <br />6.28 <br />Electrical Conductivity <br />80 <br />2,380 <br />2,490 <br />2,4_20 <br />1,970 <br />1,690 <br />2,532 <br />1,670 <br />2,395 <br />1,848 <br />2,521 <br />1964 <br />2,462 <br />2,561 <br />2,773 <br />2,664 <br />2,720 <br />390 <br />3080 <br />4010 <br />_ <br />Temperature (°C) <br />19.7 <br />21 <br />20 <br />28.2 <br />17.4 <br />23.6 <br />26.7. <br />21.9 <br />22.9 <br />24.6 <br />27.1 <br />22.9 <br />14.1 <br />24.6 <br />31.3 <br />25 <br />20.6 <br />18.8 <br />27.1 <br />23.1 <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 />Dissolved Oxygen afield) <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 />NA <br />NA <br />NA <br />NA <br />1.8 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />1200 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />19.3 <br />_ <br />Chloride <br />31.1 <br />33.2 <br />540 <br />153 <br />251 <br />112 <br />357 <br />286 <br />246 <br />188 <br />354 <br />466 <br />332 <br />380 <br />411 <br />416 <br />488 <br />433 <br />500 <br />700 <br />Total Hardness (calculeled) <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NA <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 />550 <br />647 <br />1,960 <br />1,660 <br />1,640 <br />995 <br />1,540 <br />929 <br />1,440 <br />1,010 <br />1,640 <br />2100 <br />1,640 <br />1,550 <br />1,660 <br />1,550 <br />1,620 <br />1660 <br />1700 <br />2000 <br />Chemical Oxygen Demmsd <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 />Nilrate Nitrogen <br />10.03 <br />ND <br />ND <br />0.094 <br />0.23 <br />ND <br />0.16 <br />0.42 <br /><0.0049 <br /><0.0049 <br /><0.0049 <br /><0.0043 <br /><0.0043 <br />10.0043 <br /><0.0045 <br /><0.0045 <br />10.045 <br />10.045 <br /><0.045 <br /><0.097 <br />Sulfate <br />2.7 <br />1.8 <br />NO <br />0.43 <br /><0.021 <br />ND <br />ND <br />11 <br /><0.052 <br />0.21 <br />0.51 <br /><0,013 <br /><0.013 <br /><0.013 <br />10.021 <br /><0.021 <br />3.05 <br />2.02 <br /><0.21 <br />10.32 <br />Metals <br />NT <br />NT <br />NT <br /><0.53 <br />NT <br />NT <br />NT <br /><0.53 <br />NT <br />NT <br />NT <br /><0.14 <br />NT <br />NT <br />NT <br />0.152 <br />NT <br />NT <br />NT <br /><0.70 <br />Calcimn, Dissolved <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 />_ <br />Magnesiwn, Dissolved <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 />Potassium, Dissolved <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 />sonlnn, nlcsolved <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 />volatile Oraalric Conmowrda (ua/Il <br />NR <br />NR <br />NR <br />17 <br />NT <br />NT <br />NT <br /><1.0 <br />NT <br />NT <br />NT <br />8.71 <br />NT <br />NT <br />NT <br />4.15 <br />NT <br />NT <br />NT <br />3.8 <br />_Benzene <br />Bronrobv-m <br />NT <br />NT <br />NT <br /><0.74 <br />NT <br />NT <br />NT <br /><0.74 <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br /><0.35 <br />Bron,.hloronrethnoe <br />NT <br />NT <br />NT <br />11.2 <br />NT <br />NT <br />NT <br /><1.2 <br />NT <br />NT <br />NT <br /><0.05 <br />NT <br />NT <br />NT <br /><0.05 <br />NT <br />NT <br />NT <br />10.25 <br />Bromodichloromethane <br />_ <br />NT <br />NT <br />NT <br /><0.90 <br />NT <br />NT <br />NT <br /><0.90 <br />NT <br />NT <br />NT <br /><0.05 <br />NT <br />NT <br />NT <br /><0.05 <br />NT <br />NT <br />NT <br /><0.25 <br />_ <br />Bromofortn <br />NT <br />NT <br />NT <br /><1.4 <br /><0.5 <br />1.1' <br />NT <br /><i.4 <br />NT <br />NT <br />NT <br /><Q.II <br />NT <br />NT <br />NT <br /><0.II <br />NT <br />NT <br />NT <br /><0.55 <br />13mmomelhone <br />NT <br />NT <br />NT <br /><1A <br />NT <br />NT <br />NT <br /><I.l <br />NT <br />NT <br />NT <br /><0.38 <br />NT <br />NT <br />NT <br /><0.38 <br />NT <br />NT <br />NT <br />11.9 <br />n-butylbenzene <br />NT <br />NT <br />NT <br />11.6 <br />NT <br />NT <br />NT <br /><1.6 <br />NT <br />NT <br />NT <br />10.11 <br />NT <br />NT <br />NT <br /><0.II <br />NT <br />NT <br />NT <br /><0.55 <br />sec-butylbenzene <br />NT <br />NT <br />NT <br /><1.5 <br />NT <br />NT <br />NT <br /><1.5 <br />NT <br />NT <br />NT <br /><0.09 <br />NT <br />NT <br />NT <br />0.0911 <br />NT <br />NT <br />NT <br /><0.45 <br />lert-butylbenzene <br />NT <br />NT <br />NT <br /><1.3 <br />NT <br />NT <br />NT <br /><1.3 <br />NT <br />NT <br />NT <br /><0.09 <br />NT <br />NT <br />NT <br />10.1 <br />NT <br />NT <br />NT <br /><0.50 <br />Carbon tetrachloride <br />NT <br />NT <br />NT <br /><1.3 <br />NT <br />NT <br />NT <br /><1.3 <br />NT <br />NT <br />NT <br /><0.06 <br />NT <br />NT <br />NT <br />10.06 <br />NT <br />NT <br />NT <br /><0.30 <br />Chlorobenzene <br />NT <br />NT <br />NT <br /><0.90 <br />NT <br />NT <br />NT <br /><0.90 <br />NT <br />NT <br />NT <br />0.47° <br />NT <br />NT <br />NT <br />0.26 <br />NT <br />NT <br />NT <br />10.35 <br />Chloroelhane <br />NR <br />NR <br />NR <br />98 <br />NT <br />NT <br />NT <br /><I.2 <br />NT <br />NT <br />NT <br />13.1 <br />NT <br />NT <br />NT <br />5.03 <br />NT <br />NT <br />NT <br />2.3' <br />Chlorofomr <br />NT <br />NT <br />NT <br /><0.83 <br />NT <br />NT <br />NT <br />10.83 <br />NT <br />NT <br />NT <br /><0.06 <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br /><0.35 <br />Chloromethane <br />NT <br />NT <br />NT <br /><0.53 <br />NT <br />NT <br />NT <br /><0.53 <br />NT <br />NT <br />NT <br /><0.14 <br />NT <br />NT <br />NT <br />0.152 <br />NT <br />NT <br />NT <br /><0.70 <br />2rohlorotolneue <br />NT <br />NT <br />NT <br />1.7 <br />NT <br />NT <br />NT <br /><0.71 <br />NT <br />NT <br />NT <br />0.454• <br />NT <br />NT <br />NT <br />0.351 <br />NT <br />NT <br />NT <br /><0.55 <br />4-chlorololuene <br />NT <br />NT <br />NT <br /><1.1 <br />NT <br />NT <br />NT <br /><1.1 <br />NT <br />NT <br />NT <br /><0A2 <br />NT <br />NT <br />NT <br /><0.12 <br />NT <br />NT <br />NT <br /><0.60 <br />dibromochloromethane <br />NT <br />NT <br />NT <br />10.97 <br />NT <br />NT <br />NT <br /><0.97 <br />NT <br />NT <br />NT <br /><0.06 <br />NT <br />NT <br />NT <br /><0.06 <br />NT <br />NT <br />NT <br /><0.30 <br />1,2-dibromo-3-chloropane <br />NT <br />NT <br />NT <br /><1.2 <br />NT <br />NT <br />NT <br /><1.2 <br />NT <br />NT <br />NT <br />10.29 <br />NT <br />NT <br />NT <br /><0.29 <br />NT <br />NT <br />NT <br />114 <br />1,2-dibromoethane <br />NT <br />NT <br />NT <br /><0.94 <br />NT <br />NT <br />NT <br /><0.94 <br />NT <br />NT <br />NT <br /><0.04 <br />NT <br />NT <br />NT <br />10.04 <br />NT <br />NT <br />NT <br /><0.20 <br />Dib-nomethane <br />NT <br />NT <br />NT <br /><1.5 <br />NT <br />NT <br />NT <br /><1.5 <br />NT <br />NT <br />NT <br /><0.09 <br />NT <br />NT <br />NT <br /><0.09 <br />NT <br />NT <br />NT <br /><0.45 <br />1,2-dicldorobenzene <br />NT <br />NT <br />NT <br /><0.95 <br />NT <br />NT <br />NT <br /><0.95 <br />NT <br />NT <br />NT <br />0.393• <br />NT <br />NT <br />NT <br />0.989 <br />NT <br />NT <br />NT <br /><0.55 <br />1,3 -Dichlorobenzene <br />NR <br />NR <br />NR <br /><1.1 <br />NT <br />NT <br />NT <br /><I.1 <br />NT <br />NT <br />NT <br />10.13 <br />NT <br />NT <br />NT <br />10.13 <br />NT <br />NT <br />NT <br /><0.65 <br />1,4 -1) <br />NR <br />NR <br />NR <br />2.2 <br />NT <br />NT <br />NT <br />10.89 <br />NT <br />NT <br />NT <br />443 <br />NT <br />NT <br />NT <br />7.1 <br />NT <br />NT <br />NT <br />2.6 <br />DichiorodifuoronreWane <br />NT <br />NT <br />NT <br />10 <br />NT <br />NT <br />NT <br /><0.19 <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br />10.09 <br />NT <br />NT <br />NT <br /><0.45 <br />1,1-Dichloroethane <br />NR <br />NR <br />NR <br />8.7 <br />NT <br />NT <br />NT <br />2.5 <br />NT <br />NT <br />NT <br />26 <br />NT <br />NT <br />NT <br />11.7 <br />NT <br />NT <br />NT <br />3.4 <br />1, 2-Dichloroethmie <br />NR <br />NR <br />NR <br />1 I <br />NT <br />NT <br />NT <br /><I.1 <br />NT <br />NT <br />NT <br />-8 T9 <br />NT <br />NT <br />NT <br />4.01 <br />NT <br />NT <br />NT <br />2.6 <br />1,1-dichloroelhene <br />NT <br />NT <br />NT <br /><0.72 <br />NT <br />NT <br />NT <br /><0.72 <br />NT <br />NT <br />NT <br /><0.05 <br />NT <br />NT <br />NT <br /><0.06 <br />NT <br />NT <br />NT <br /><0.30 _ <br />6s-I,2-1)ichloroe0hene <br />NR <br />NR <br />NR <br />36 <br />NT <br />NT <br />NT <br /><0, 82 <br />NT <br />NT <br />NT <br />0.843 <br />NT <br />NT <br />NT <br />0.288 <br />NT <br />NT <br />NT <br /><0A5 <br />Imus-l,2-dichloroelhene <br />NT <br />NT <br />NT <br />10.94 <br />NT <br />NT <br />NT <br /><0.94 <br />NT <br />NT <br />NT <br /><0,05 <br />NT <br />NT <br />NT <br />0.113 <br />NT <br />NT <br />NT <br /><0.45 <br />1,2-dichloropropane <br />NT <br />NT <br /><0.15 <br />NT <br />NT <br />NT <br /><0.I5 <br />NT <br />NT <br />NT <br />1.33 <br />NT <br />NT <br />NT <br />1.43 <br />NT <br />NT <br />NT <br />0.52" <br />_ <br />1,3-dichloropropane <br />_NT <br />NT <br />NT <br />NT <br /><1.1 <br />NT <br />NT <br />NT <br /><I.I <br />NT <br />NT <br />NT <br /><0.09 <br />NT <br />_NT <br />NT <br />10.09 <br />NT <br />NT <br />NT <br /><0.45 <br />2,2-dichloropropane <br />NT <br />NT <br />NT <br /><1.0 <br />NT <br />NT <br />NT <br /><1.0 <br />NT <br />NT <br />NT <br /><0.04 <br />NT <br />NT <br />NT <br /><0.19 <br />NT <br />NT <br />NT <br /><0.95 <br />1,1-dichloropropene <br />NT <br />NT <br />NT <br /><LI <br />NT <br />NT <br />NT <br /><1.1 <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br /><0.35 <br />Cis- 1,3dichlompropene <br />NT <br />NT <br />NT <br />! <br />NT <br />NT <br />NT <br /><0.76 <br />NT <br />NT <br />NT <br /><0.03 <br />NT <br />NT <br />NT <br /><0.08 <br />NT <br />NT <br />NT <br /><0.40 <br />trans-1,3-dicbloropropene <br />NT <br />NT <br />NT <br /><l.l <br />NT <br />NT <br />NT <br />'Ll <br />NT <br />NT <br />NT <br />0.0918" <br />NT <br />NT <br />NT <br /><0.07 <br />NT <br />NT <br />NT <br /><0.35 <br />NR <br />NR <br />NR <br />15 <br />NT <br />NT <br />NT <br />1.9 <br />NT <br />NT <br />NT <br />18.6 <br />NT <br />NT <br />NT <br />11.6 <br />NT <br />NT <br />NT <br />6.6 <br />_Ethylbenzw¢ <br />Hexachlorobutadieoe <br />NT <br />NT <br />NT <br /><0.2 <br />NT <br />NT <br />NT <br /><0.20 <br />NT <br />NT <br />NT <br /><0A6 <br />NT <br />NT <br />NT <br /><0.16 <br />NT <br />NT <br />NT <br /><0.80 <br />Isooranvlbenzene <br />NT <br />NT <br />NT <br />2.1 <br />NT <br />10.18") <br />NT <br /><1.2 <br />NT <br />NT <br />NT _ <br />1.05 <br />NT <br />NT <br />NT <br />1.23 <br />NT <br />NT <br />NT <br /><0.50 <br />