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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

--

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.

Coil Coating Effluent Guidelines

Steel Basis Material Subcategory

Pretreatment Standards for Existing Sources (40 CFR 465.14)

Pollutant

Maximum for any 1 day

Maximum for monthly average

 

mg/m2 (lb. per 1 million ft2) of area processed

Chromium

0.50

(0.10)

0.20

(0.041)

Cyanide

0.34

(0.07)

0.14

(0.029)

Zinc

1.56

(0.32)

0.66

(0.14)

Pretreatment Standards for New Sources (40 CFR 465.15)

Pollutant

Maximum for any 1 day

Maximum for monthly average

 

mg/m2 (lb. per 1 million ft2) of area processed

Chromium

0.12

(0.024)

0.047

(0.01)

Cyanide

0.063

(0.013)

0.025

(0.005)

Zinc

0.33

(0.066)

0.14

(0.027)

Aluminum Basis Material Subcategory

Pretreatment Standards for Existing Sources (40 CFR 465.34)

Pollutant

Maximum for any 1 day

Maximum for monthly average

 

mg/m2 (lb. per 1 million ft2) of area processed

Chromium

0.42

(0.085)

0.17

(0.034)

Cyanide

0.29

(0.059)

0.12

(0.024)

Zinc

1.32

(0.27)

0.56

(0.12)

Pretreatment Standards for New Sources (40 CFR 465.35)

Pollutant

Maximum for any 1 day

Maximum for monthly average

 

mg/m2 (lb. per 1 million ft2) of area processed

Chromium

0.18

(0.037)

0.072

(0.015)

Cyanide

0.095

(0.02)

0.038

(0.008)

Zinc

0.49

(0.10)

0.20

(0.041)


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