Table 4 to Part 455—BAT and NSPS Effluent Limitations for Priority Pollutants for Direct Discharge Point Sources That use End-of-Pipe Biological Treatment

[Micrograms per liter (µg/l)]

Pollutant	Daily maximum shall not exceed	Monthly average shall not exceed	1,1-Dichloroethylene	25	16	1,1,1-Trichloroethane	54	21	1,2-Dichloroethane	211	68	1,2-Dichloropropane	230	153	1,2-Dichlorobenzene	163	77	1,2-trans-Dichloroethylene	54	21	1,3-Dichloropropene	44	29	1,4-Dichlorobenzene	28	15	2-chlorophenol	98	31	2,4-Dichlorophenol	112	39	2,4-Dimethylphenol	36	18	Benzene	136	37	Bromodichloromethane	380	142	Bromomethane	380	142	Chlorobenzene	28	15	Chloromethane	190	86	Cyanide (Total)	640	220	Dibromochloromethane	794	196	Dichloromethane	89	40	Ethylbenzene	108	32	Lead (Total)	690	320	Naphthalene	59	22	Phenol	26	15	Tetrachloroethylene	56	22	Tetrachloromethane	38	18	Toluene	80	26	Tribromomethane	794	196	Trichloromethane	46	21

[58 FR 50698, Sept. 28, 1993]