Default Biorates for Soluble HAP

Compound name Biorate (K1), L/g MLVSS-hr Acetonitrile 0.100 Acetophenone 0.538 Diethyl sulfate 0.105 Dimethyl hydrazine(1,1) 0.227 Dimethyl sulfate 0.178 Dinitrotoluene(2,4) 0.784 Dioxane(1,4) 0.393 Ethylene glycol dimethyl ether 0.364 Ethylene glycol monobutyl ether acetate 0.496 Ethylene glycol monomethyl ether acetate 0.159 Isophorone 0.598 Methanol a Nitrobenzene 2.300 Toluidine (-0) 0.859 Triethylamine 1.064 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]