40 CFR 471.44 - Pretreatment standards for existing sources (PSES).

View all text of Subpart D [§ 471.40 - § 471.46]

§ 471.44 - 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, 1985 achieve the following pretreatment standards for existing sources (PSES). The mass of wastewater pollutants in precious metals forming process wastewater introduced into a POTW shall not exceed the following values:

(a) Rolling spent neat oils—subpart D—PSES. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals rolled with emulsions		Cadmium	0.026	0.012	Copper	0.147	0.077	Cyanide	0.023	0.010	Silver	0.032	0.013

(d) Drawing spent emulsions.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals drawn with emulsions		Cadmium	0.016	0.007	Copper	0.091	0.048	Cyanide	0.014	0.006	Silver	0.020	0.008

(e) Drawing spent soap solutions.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals drawn with soap solutions		Cadmium	0.001	0.0005	Copper	0.006	0.003	Cyanide	0.0009	0.0004	Silver	0.002	0.0006

(f) Metal powder production atomization wastewater.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals powder wet atomized		Cadmium	2.27	1.00	Copper	12.7	6.68	Cyanide	1.94	0.802	Silver	2.74	1.14

(g) Heat treatment contact cooling water.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals heat treated		Cadmium	0.142	0.063	Copper	0.793	0.417	Cyanide	0.121	0.050	Silver	0.171	0.071

(h) Semi-continuous and continuous casting contact cooling water.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals cast by the semi-continuous or continuous method		Cadmium	0.350	0.155	Copper	1.96	1.03	Cyanide	0.299	0.124	Silver	0.423	0.175

(i) Stationary casting contact cooling water—subpart D—PSES. There shall be no discharge of process wastewater pollutants.

(j) Direct chill casting contact cooling water.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any one day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals cast by the direct chill method		Cadmium	0.367	0.162	Copper	2.05	1.08	Cyanide	0.313	0.130	Silver	0.443	0.184

(k) Shot casting contact cooling water.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals shot cast		Cadmium	0.125	0.055	Copper	0.698	0.367	Cyanide	0.107	0.044	Silver	0.151	0.063

(l) Wet air pollution control scrubber blowdown—subpart D—PSES. There shall be no discharge of process wastewater pollutants.

(m) Pressure bonding contact cooling water.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metal and base metal pressure bonded		Cadmium	0.029	0.013	Copper	0.159	0.084	Cyanide	0.024	0.010	Silver	0.034	0.014

(n) Surface treatment spent baths.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals surface treated		Cadmium	0.033	0.015	Copper	0.183	0.097	Cyanide	0.028	0.012	Silver	0.040	0.017

(o) Surface treatment rinse.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals surface treated		Cadmium	0.210	0.093	Copper	1.17	0.616	Cyanide	0.179	0.074	Silver	0.253	0.105

(p) Alkaline cleaning spent baths.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned		Cadmium	0.021	0.009	Copper	0.114	0.060	Cyanide	0.018	0.007	Silver	0.025	0.010

(q) Alkaline cleaning rinse.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned		Cadmium	0.381	0.168	Copper	2.13	1.12	Cyanide	0.325	0.135	Silver	0.459	0.191

(r) Alkaline cleaning prebonding wastewater.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals and base metal cleaned prior to bonding		Cadmium	0.400	0.174	Copper	2.210	1.16	Cyanide	0.337	0.139	Silver	0.476	0.197

(s) Tumbling or burnishing wastewater.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals tumbled or burnished		Cadmium	0.412	0.182	Copper	2.300	1.21	Cyanide	0.351	0.145	Silver	0.496	0.206

(t) Sawing or grinding spent neat oils—subpart D—PSES. There shall be no discharge of process wastewater pollutants.

(u) Sawing or grinding spent emulsions.

Subpart D—PSES

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/off-kg (pounds per million off-pounds) of precious metals sawed or ground with emulsions		Cadmium	0.032	0.014	Copper	0.178	0.094	Cyanide	0.027	0.011	Silver	0.038	0.016

(v) Degreasing spent solvents—subpart D—PSNS. There shall be no discharge of process wastewater pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]