1. Regulations
  2. title 40
  3. chapter I-i12
  4. part 63
  5. subpart GGG
  6. appendix-i 8

- Table 9 to Subpart GGG of Part 63—Default Biorates for Soluble HAP

Compound name Biorate (K1),
L/g MLVSS-hr 		Acetonitrile0.100 Acetophenone0.538 Diethyl sulfate0.105 Dimethyl hydrazine(1,1)0.227 Dimethyl sulfate0.178 Dinitrotoluene(2,4)0.784 Dioxane(1,4)0.393 Ethylene glycol dimethyl ether0.364 Ethylene glycol monobutyl ether acetate0.496 Ethylene glycol monomethyl ether acetate0.159 Isophorone0.598 MethanolaNitrobenzene2.300 Toluidine (-0)0.859 Triethylamine1.064

a For direct dischargers, the default biorate for methanol is 3.5 L/g MLVSS-hr; for indirect dischargers, the default biorate for methanol is 0.2 L/g MLVSS-hr.

[66 FR 40137, Aug. 2, 2001]

AUTHORITY: 42 U.S.C. 7401

SOURCE: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.