1.1 ,This test method employs a direct interface gas chromatograph/mass spectrometer (GCMS) to identify and quantify the 36 volatile organic compounds (or sub-set of these compounds) listed as follows. The individual Chemical Abstract Service (CAS) numbers are listed after each compound.
| Benzene-71432 | Methylene chloride-75092 |
| Bromodichloromethane-75274 | 1,1,2,2-Tetrachloroethane-79349 |
| Carbon disulfide-75150 | 1,1,1-Trichloroethane-71556 |
| Chloroform-67663 | 1,1,2-Trichloroethane-79005 |
| Methyl iso-Butyl ketone-108101 | p-Xylene-106423 |
| Styrene-100425 | Bromomethane-74839 |
| Tetrachloroethylene-127184 | Carbon tetrachloride-56235 |
| Toluene-108883 | Chlorobenzene-108907 |
| Bromoform-75252 | c-1,3-Dichloropropene-10061015 |
| Vinyl acetate-108054 | 1,2-Dichloroethane-156592 |
| Vinyl chloride-75014 | 1,1-Dichloroethene-75354 |
| Chloromethane-74873 | t-1,2-Dichloroethene-156605 |
| cis-1,2-Dichloroethene-156592 | Methyl ethyl ketone-78933 |
| Dibromochloromethane-124481 | 2-Hexanone-591786 |
| 1,1-Dichloroethane-107062 | t-1,3-Dichloropropene-542756 |
| 1,2-Dichloropropane-78875 | Trichloroethene-79016 |
| Ethylbenzene-100414 | m-Xylene-108383 |
| Ethyl chloride-75003 | o-Xylene-95476 |