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® M ® ® ® ® w ® M ® M ® M r <br />HISTORICAL SUMMARY OF ANALYI <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -1 <br />Sample Type: Air <br />Sampling Date 1/22/09 7/15/09 3/2/10 9/3/10 1/25/11 7/29/11 4/12/12 8/7/12 1/28/13 9/11/13 3/18/14 <br />1,2-Dichloroethane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Heptane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br />320 <br /><180 <br /><1.8 <br /><230 <br />Trichloroethene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,2-Dichloropropane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,4 -Dioxane <br /><450 <br /><960 <br /><990 <br /><19 <br /><610 <br /><210 <br /><1300 <br /><640 <br /><710 <br /><7.1 <br /><930 <br />Bromodichloromethane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />cis- 1,3-Dichloropropene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />4-Methyl-2-pentanone <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><18 <br /><230 <br />Toluene <br />62000 <br />68000 <br />76000 <br />8800 <br />41000 <br />14000 <br />71000 <br />36000 <br />36000 <br />620 <br />44000 <br />trans-1,3-Dichloropropene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,1,2 -Trichloroethane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Tetrachloroethene (PCE) <br />470 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />2-Hexanone <br /><450 <br /><960 <br /><990 <br /><19 <br /><610 <br /><210 <br /><1300 <br /><640 <br /><710 <br /><7.1 <br /><930 <br />Dibromochloromethane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,2-Dibromoethane (EDB) <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Chlorobenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Ethylbenzene <br /><110 <br /><240 <br /><250 <br />27 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />m/p Xylene <br /><110 <br /><240 <br /><250 <br />30 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />o -Xylene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Styrene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Bromoform <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Cumene <br /><110 <br /><240 <br /><250 <br />6.5 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,1,2,2 -Tetrachloroethane <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />Propylbenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />4-Ethyltoluene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,3,5-Trimethylbenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,2,4-Trimethylbenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,3 -Dichlorobenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,4 -Dichlorobenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />alpha-Chlorotoluene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,2 -Dichlorobenzene <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br /><160 <br /><180 <br /><1.8 <br /><230 <br />1,2,4-Trichlorobenzene <br /><450 <br /><960 <br /><990 <br /><19 <br /><610 <br /><210 <br /><1300 <br /><640 <br /><710 <br /><7.1 <br /><930 <br />Hexachlorobutadiene <br /><450 <br /><960 <br /><990 <br /><19 <br /><610 <br /><210 <br /><1300 <br /><640 <br /><710 <br /><7.1 <br /><930 <br />Benzyl Chloride <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />n-butylbenzene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />sec-butylbenzene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />tert-butyl benzene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NR = Not Required <br />NT = Not Tested <br />* = Trace Concentration <br />{1} Parameter also detected in one or i <br />