PCE - Tetrachloroethylene; TCE - Tricholoroethylene; DCE - Dichloroethylene; VC - Vinyl chloride; PCA - Perchloroethane; TCA -Trichloroethane; DCA - Dichloroethane; CT - Carbon tetrachloride; CF - Chloroform; DCM - Dichloromethane; MC - Methylene chloride.