40 C.F.R. § 471.101

Current through October 31, 2024

Section 471.101 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)

Except as provided in 40 CFR 125.30 through 125.32 , any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

(a)Metal powder production atomization wastewater.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder wet atomized
Copper	9.58	5.04
Cyanide	1.46	0.605
Lead	2.12	1.01
Oil and grease	101	60.5
TSS	207	98.3
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(b)Sizing spent emulsion.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder sized
Copper	0.028	0.015
Cyanide	0.004	0.002
Lead	0.006	0.003
Oil and grease	0.292	0.175
TSS	0.599	0.285
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(c)Oil-resin impregnation wastewater-subpart J-BPT. There shall be no discharge of process wastewater pollutants.

(d)Steam treatment wet air pollution control scrubber blowdown.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of power metallurgy parts steam treated
Copper	1.51	0.792
Cyanide	0.230	0.095
Lead	0.333	0.159
Oil and grease	15.9	9.51
TSS	32.5	15.5
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(e)Tumbling, burnishing and cleaning wastewater.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder metallurgy parts tumbled, burnished, or cleaned
Copper	8.36	4.40
Cyanide	1.28	0.528
Lead	1.85	0.880
Oil and grease	88.0	52.800
TSS	181	85.8
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(f)Sawing or grinding spent neat oils-subpart J-BPT. There shall be no discharge of process wastewater pollutants.

(g)Sawing or grinding spent emulsion.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with emulsion
Copper	0.035	0.018
Cyanide	0.005	0.002
Lead	0.008	0.004
Oil and grease	0.362	0.217
TSS	0.742	0.353
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(h)Sawing or grinding contact cooling water.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with contact cooling
Copper	3.08	1.62
Cyanide	0.470	0.195
Lead	0.681	0.324
Oil and grease	32.4	19.5
TSS	66.4	31.6
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(i)Hot pressing contact cooling water.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder cooled after pressing
Copper	16.7	8.80
Cyanide	2.55	1.06
Lead	3.70	1.76
Oil and grease	176	106
TSS	361	172
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(j)Mixing wet air pollution control scrubber blowdown.

Subpart J-BPT

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder mixed
Copper	15.0	7.90
Cyanide	2.29	0.948
Lead	3.32	1.58
Oil and grease	158	94.8
TSS	324	154
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(k)Degreasing spent solvents-subpart J-BPT. There shall be no discharge of process wastewater pollutants.

40 C.F.R. §471.101

50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986