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Pretreatment Standards for the Electroplating Category
(40 CFR 413)

Facilities Discharging <10,000 gpd

Pollutant

Daily Maximum, mg/l

Max. 4 Day Avg, mg/l

Cadmium

1.2

0.7

Lead

0.6

0.4

Cyanide (amenable)

5.0

2.7

Total Toxic Organics

4.57

--

Facilities Discharging >10,000 gpd

Pollutant

Daily Maximum, mg/l

Max. 4 Day Avg, mg/l

Cadmium

1.2

0.7

Chromium

7.0

4.0

Copper

4.5

2.7

Lead

0.6

0.4

Nickel

4.1

2.6

Zinc

4.2

2.6

Silver

1.2

0.7

Cyanide (total)

1.9

2.7

Total Toxic Organics

2.13

--

Facilities Discharging <10,000 gpd — Alternative Mass-Based Standards

Pollutant

Daily Maximum, mg/m2of Operation

Max. 4 Day Avg, mg/l

Cadmium

107

65

Chromium

623

357

Copper

401

241

Lead

53

36

Nickel

365

229

Zinc

374

232

Cyanide (total)

169

89

 

Pretreatment Standards for the Metal Finishing Category (40 CFR 433)

Pretreatment Standards for Existing Sources (PSES)

Pollutant

Daily Maximum, mg/l

Max. Monthly Avg, mg/l

Cadmium

0.69

0.26

Chromium

2.77

1.71

Copper

3.38

2.07

Lead

0.69

0.43

Nickel

3.98

2.38

Zinc

2.61

1.48

Silver

0.43

0.24

Cyanide (total)

1.2

0.65

Total Toxic Organics

2.13

--

Note: Pretreatment standards for new sources (PSNS) are identical to PSES except for the cadmium limitations which are 0.11 mg/l and 0.07 mg/l for the daily maximum and monthly average.



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