40 C.F.R. § 471.104

Current through September 30, 2024

Section 471.104 - Pretreatment standards for existing sources (PSES)

Except as provided in 40 CFR 403.7 and 403.13 , any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and by August 23, 1988 achieve the following pretreatment standards for existing sources (PSES). 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-PSES

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	5.040
Cyanide	1.46	0.605
Lead	2.12	1.01

(b)Sizing spent emulsions.

Subpart J-PSES

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-PSES.

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

Subpart J-PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (pounds per million off-pounds) of powder metallurgy part steam treated
Copper	1.51	0.792
Cyanide	0.230	0.095
Lead	0.333	0.159

(e)Tumbling, burnishing and cleaning wastewater.

Subpart J-PSES

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

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

(g)Sawing or grinding spent emulsions.

Subpart J-PSES

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-PSES

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

(i)Hot pressing contact cooling water.

Subpart J-PSES

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

(j)Mixing wet air pollution control scrubber blowdown.

Subpart J-PSES

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

40 C.F.R. §471.104

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