Table 1-Surrogate Parameters for Direct Dischargers
[Utilizing biological treatment technology]
Regulated parameters | Treatability class |
Amyl alcohol | Alcohols. |
Ethanol1 | |
Isopropanol1 | |
Methanol1 | |
Phenol | |
Isobutyraldehyde1 | Aldehydes. |
n-Heptane1 | Alkanes. |
n-Hexane1 | |
Diethylamine1 | Amines. |
Triethylamine | |
Benzene | Aromatics. |
Toluene1 | |
Xylenes1 | |
Chlorobenzene | |
o-Dichlorobenzene | |
Chloroform1 | Chlorinated Alkanes. |
Methylene chloride1 | |
1,2-Dichloroethane1 | |
Ethyl acetate1 | Esters. |
Isopropyl acetate | |
n-Amyl acetate | |
n-Butyl acetate | |
Methyl formate | |
Tetrahydrofuran1 | Ethers. |
Isopropyl ether | |
Acetone1 | Ketones. |
4-Methyl-2-pentanone (MIBK) | |
Ammonia (aqueous) | Miscellaneous.2 |
Acetonitrile | |
Methyl Cellosolve | |
Dimethyl Sulfoxide |
1 These parameters may be used as a surrogate to represent other parameters in the same treatability class.
2 Surrogates have not been identified for the "Miscellaneous" treatability class.
Table 2-Surrogate Parameters for Indirect Dischargers (Utilizing Steam Stripping Treatment Technology)
Regulated parameters | Treatability class |
Benzene | |
Toluene1 | |
Xylenes | |
n-Heptane | High strippability. |
Chloroform1 | |
Methylene chloride1 | |
Chlorobenzene | |
Ammonia (aqueous) | |
Diethyl amine | |
Triethyl amine | |
Acetone1 | |
4-methyl-2-pentanone | |
n-Amyl acetate | |
n-Butyl acetate | |
Ethyl acetate | Medium strippability. |
Isopropyl acetate | |
Methyl formate | |
Isopropyl ether | |
Tetrahydrofuran1 | |
1,2-dichloroethane | |
o-Dichlorobenzene |
1 These parameters may be used as a surrogate to represent other parameters in the same treatability class.
40 C.F.R. 439 app A to Part 439