§ 471.103 - New source performance standards (NSPS).

§ 471.103 New source performance standards (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards (NSPS). The mass of pollutants in the metal powder process wastewater shall not exceed the following values:

(a) Metal powder production atom-ization wastewater.

Subpart J - NSPS

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 emulsions.

Subpart J - NSPS

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 - NSPS. There shall be no discharge of process wastewater pollutants.

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

Subpart J - NSPS

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 steam treated
Copper	0.151	0.079
Cyanide	0.023	0.010
Lead	0.033	0.016
Oil and grease	1.59	0.951
TSS	3.25	1.55
pH	(1)	(1)

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

(e) Tumbling, burnishing and cleaning wastewater.

Subpart J - NSPS

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	0.836	0.440
Cyanide	0.128	0.053
Lead	0.185	0.088
Oil and grease	8.80	5.28
TSS	18.1	8.58
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 - NSPS. There shall be no discharge of process wastewater pollutants.

(g) Sawing or grinding spent emulsions.

Subpart J - NSPS

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 emulsions
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 waterr.

Subpart J - NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder sawed or ground with contact cooling water
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 - NSPS

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	1.67	0.880
Cyanide	0.255	0.106
Lead	0.370	0.176
Oil and grease	17.6	10.6
TSS	36.1	17.2
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 - NSPS

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 - NSPS. There shall be no discharge of process wastewater pollutants.

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