Appendix A to Part 439 - Tables

Appendix A to Part 439 - Tables

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.

[63 FR 50437, Sept. 21, 1998; 64 FR 10393, Mar. 4, 1999, as amended at 68 FR 12275, Mar. 13, 2003]