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Organic Concentration Limits vs. Fourth Quarter 2010 Sampling Event Results <br />Forward Landfill <br />MW -1 MW -2A MW -3 MW -10 <br />Parameter MDL Dec -10 CLGBj BL I PQL Dec -10 I CLGBj SL PQL Dec -10 CLGB BL I POLI Dec -10 CLGB BL PQL <br />1,1,1,2 -Tetrachloroethane 0.35 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />1,1,1 -Trichloroethane 0.82 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />1,1,2,2 -Tetrachloroethane 0.21 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />�r <br />r Anal 1b: <br />11.0 <br />1,2,3-Trichloropropane 0.89 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />1,2,4-Trichiorobenzene 0.41 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />1,2-Dibromo-3-Chloropropane 0.39 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />7�77- <br />2-Hexanone 1.2 <5.0 5.0* <5.0 5.0* <5.0 5.0* <5.0 5.0* <br />4-Methyl-2-Pentanone 2.1 <5.0 5.0* <5.0 5.0* <5.0 5.0* <5.0 5.0* <br />Acetone 3.0 <10 10* 17 10* <10 10* <10 10* <br />Bromodichloromethane 0.39 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />Bromoform 0.26 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />Carbon Disulfide 0.19 <1.0 1.0* <1.0 1.0* <1.0 1.0* <1.0 1.0* <br />r � } 1- ci t?' 1 ti= <br />� <br />Chloroform 0.34 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />cis-1,2-Dichloroethylene 0.81 0.0 1.0 <1.0 1.5 <1.0 1.0 <1.0 1.0 <br />cis-1,3-Dichloropropene 0.36 <1.0 1.0 <1.0 1.0 <1.0 1.0 0.0 1.0 <br />-r. <br />47 " <br />Ethanol NA ND NA ND NA ND NA ND NA <br />Ethylbenzene 0.74 <1.0 1.0 <1.0 1.0 <1.0 1.0 0.0 1.0 <br />Ethyltertiary Butyl Ether 0.29 <1.0 1.0* <1.0 1.0* <1.0 1.0* <1.0 1.0* <br />P <br />K Bromide 0.69 <1.0 1.0* <1.0 1.0* <1.0 1.0* <1.0 X1.0* <br />Methyl Chloride 0.35 <1.0 1.0 <1.0 1.0 <1.0 1.0 <1.0 1.0 <br />All concentrations are provided in ug/L. <br />MDL - Method Detection Limit from current laboratory analytical report. <br />CLGB - Concentration Limit Greater Than Background (Impact Constituents only). See Table 5-12 of Revised Post -Closure Maintenance Plan (11/2/94). <br />BL - Background Limit. Determined from historical data at MW -20 and MW -23R. (Mean + [2.375 x Standard Deviation]) <br />PQL - Practical Quantitation Limit from current laboratory report. <br />ND - Ethanol was reported by the laboratory as a tentatively identtfled compound (TIC). PQL and MDL are not provided in the lab report. <br />0.75 - December 2010 concentration exceeds the CLGB, BL, or PQL. <br />*- No historical detections above the PQL in MW -20 or MW -23R. Background limit is equal to the PQL. <br />" - Constituent concentration is between the MDL and PQL. <br />40 Pag 0 40 <br />