42 



Table 3-5 



Volatile Organic Results 



Compound 



mqri-ctr~mT 



JR2-CTR Mi 



2R3-CTR ] 



v!QR4-CTR 



MQR5-CTR 





(ppb) 



(ppb) 



(ppb) 



(ppb) 



(ppb) 



Chloromethane 



<15 



<16 



<14 



10 



<3J 



Vinyl chloride 



<15 



<16 



<14 



<12 



<22 



Bromomethane 



<15 



<16 



<14 



<12 



<22 



Chloroethane 



<15 



<16 



<14 



<12 



<22 



1,1-Dichloroethene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Acetone 



751 U 



203 J 



1144 U 



908 U 



254 J 



Carbon disulfide 



16 



<6.6 



119 



53 



<8.9 



Methylene chloride 



44 



6.6 J 



25 



20 



12 J 



trans- 1 ,2-Dichloroethene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



1,1-Dichloroethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



cis- 1 ,2-Dichloroethene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



2-Butanone 



<92 



99 J 



163 J 



<73 



<134 



Chloroform 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



1,1, 1-Trichloroethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Carbon tetrachloride 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Benzene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



1 ,2-Dichloroethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Trichloroethene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



1 ,2-Dichloropropane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Bromodichloromethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



4-Methyl-2-pentanone 



<61 



<66 



<55 



<48 



<89 



cis- 1 , 3-Dichloropropene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Toluene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



trans- 1 , 3-Dichloropropene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



1,1,2-Trichloroethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Tetrachloroethene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



2-Hexanone 



<61 



66 J 



<55 



<48 



<89 



Dibromochloromethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Chlorobenzene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Ethylbenzene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



m/p Xylene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



o-xylene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Styrene 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Bromoform 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



1 , 1 ,2,2-Tetrachloroethane 



<6.1 



<6.6 



<5.5 



<4.8 



<8.9 



Samples were collected from surface grabs on 12/17/91. 



Qualifier codes: 



J = Estimated value; analyte detected at < the practical quantitation limit. 



U = Above the upper calibration limit. 



Sediment Core Chemistry Data Summary from the MQR Mound, August and December 1991 



