40 C.F.R. § 471.105

Current through September 30, 2024

Section 471.105 - Pretreatment standards for new sources (PSNS)

Except as provided in 40 CFR 403.7 , any new source subject to this subject which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in metal powders process wastewater introduced into a POTW shall not exceed the following values:

(a)Metal powder production atomization wastewater.

Subpart J-PSNS

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

(b)Sizing spent emulsions.

Subpart J-PSNS

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

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

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

Subpart J-PSNS

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

(e)Tumbling, burnishing and cleaning wastewater.

Subpart J-PSNS

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

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

(g)Sawing or grinding spent emulsions.

Subpart J-PSNS

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

(h)Sawing or grinding contact cooling water.

Subpart J-PSNS

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	1.620
Cyanide	0.470	0.195
Lead	0.681	0.324

(i)Hot pressing contact cooling water.

Subpart J-PSNS

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

(j)Mixing wet air pollution control scrubber blowdown.

Subpart J-PSNS

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

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

40 C.F.R. §471.105

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