40 CFR Appendix A
Tables
June 9, 2020
Table 1—Surrogate Parameters for Direct Dischargers
[Utilizing biological treatment technology]
Open Table
| 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 |
1These parameters may be used as a surrogate to represent other parameters in the same treatability class.
2Surrogates have not been identified for the “Miscellaneous” treatability class.
Table 2—Surrogate Parameters for Indirect Dischargers (Utilizing Steam Stripping Treatment Technology)
Open Table
| 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 |
1These parameters may be used as a surrogate to represent other parameters in the same treatability class.
[63 FR 50437, Sept. 21, 1998; 64 FR 10393, Mar. 4, 1999, as amended at 68 FR 12275, Mar. 13, 2003]
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