Site Feedback

Title 40

Displaying title 40, up to date as of 6/16/2026. Title 40 was last amended 6/15/2026.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Subpart A—Steel Basis Material Subcategory

§ 466.10 Applicability; description of the steel basis material.

This subpart applies to discharges to waters of the United States, and introduction of pollutants into publicly owned treatment works from porcelain enameling on steel basis materials.

§ 466.11 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations for metal preparation operations and for coating operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

Subpart A—BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
Metal preparation Coating operation Metal preparation Coating operation
Metric units—mg/m2 of area processed or coated
Chromium 16.82 3.41 6.81 1.38
Lead 6.01 1.21 5.21 1.06
Nickel 56.46 11.43 40.05 8.11
Zinc 53.26 10.78 22.43 4.54
Aluminum 182.20 36.87 74.47 15.07
Iron 112.12 22.69 56.06 11.34
Oil and grease 800.84 162.10 480.51 97.23
TSS 1642.00 332.20 800.90 162.00
pH (1) (1) (1) (1)
English Units—pounds per 1 million ft2 of area processed or coated
Chromium 3.45 0.07 1.40 0.29
Lead 1.23 0.25 1.07 0.22
Nickel 11.57 2.34 8.20 1.66
Zinc 10.91 2.21 4.60 0.93
Aluminum 37.32 7.55 15.26 3.09
Iron 22.96 4.65 11.48 2.32
Oil and grease 164.03 33.19 98.42 19.92
TSS 337.00 68.10 164.00 33.20
pH (1) (1) (1) (1)
1 Within the range 7.5 to 10.0 at all times.

[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36543, Sept. 6, 1985]

§ 466.12 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

Subpart A—BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
Metal preparation Coating operation Metal preparation Coating operation
Metric units—mg/m2 of area processed or coated
Chromium 16.82 0.53 6.81 0.22
Lead 6.01 0.19 5.21 0.16
Nickel 56.50 1.78 40.05 1.26
Zinc 53.30 1.68 22.43 0.71
Aluminum 182.00 5.74 74.48 2.35
Iron 112.12 3.53 56.06 1.77
English Units—pounds per 1 million ft2 of area processed or coated
Chromium 3.45 0.11 1.4 0.05
Lead 1.23 0.04 1.07 0.03
Nickel 11.57 0.37 8.20 0.26
Zinc 10.91 0.35 4.60 0.15
Aluminum 37.32 1.18 15.26 0.48
Iron 22.96 0.72 11.48 0.36

[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36543, Sept. 6, 1985]

§ 466.13 New source performance standards.

Any new source subject to this subpart must achieve the following new source performance standards:

Subpart A—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
Metal preparation Coating operation Metal preparation Coating operation
Metric units—mg/m2 of area processed or coated
Chromium 3.37 0.47 1.5 0.19
Lead 1.0 0.13 0.9 0.11
Nickel 12.0 1.51 6.3 0.79
Zinc 10.2 1.29 4.2 0.53
Aluminum 30.3 3.82 12.4 1.56
Iron 28.0 3.53 14.0 1.77
Oil and grease 100.0 12.60 100.0 12.60
TSS 150.0 18.91 120.0 15.12
pH (1) (1) (1) (1)
English units—pounds per 1 million ft2 of area processed or coated
Chromium 0.76 0.10 0.31 0.04
Lead 0.21 0.03 0.19 0.03
Nickel 2.46 0.31 1.29 0.16
Zinc 2.09 0.27 0.86 0.11
Aluminum 6.21 0.78 2.54 0.32
Iron 5.74 0.72 2.87 0.36
Oil and grease 20.48 2.58 20.48 2.58
TSS 30.72 3.87 24.58 3.10
pH (1) (1) (1) (1)
1 Within the range 7.5 to 10.0 at all times.

[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36543, Sept. 6, 1985]

§ 466.14 Pretreatment standards for existing sources.

(a) 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 achieve the following pretreatment standards for existing sources.

Subpart A—PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
Milligrams per liter (mg/l)
Chromium 0.42 0.17
Lead 0.15 0.13
Nickel 1.41 1.00
Zinc 1.33 0.56

(b) In cases where POTW find it necessary to impose mass effluent pretreatment standards the following equivalent mass standards are provided:

Subpart A—PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
Metal preparation Coating operation Metal preparation Coating operation
Metric units—mg/m 2 of area processed or coated
Chromium 16.82 0.53 6.81 0.22
Lead 6.01 0.19 5.21 0.16
Nickel 56.5 1.78 40.1 1.26
Zinc 53.3 1.68 22.5 0.71
English units—lbs/1 million ft 2 of area processed or coated
Chromium 3.45 0.11 1.4 0.05
Lead 1.23 0.04 1.07 0.03
Nickel 11.6 0.37 8.20 0.26
Zinc 10.9 0.35 4.6 0.15

[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36543, Sept. 6, 1985]

§ 466.15 Pretreatment standards for new sources.

Except as provided in 40 CFR 403.7 and 403.13, any new source subject to this subpart 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:

Subpart A—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
Metal preparation Coating operation Metal prepartion Coating operation
Metric units—mg/m2 of area processed or coated
Chromium 3.7 0.47 1.5 0.19
Lead 1.0 0.13 0.9 0.11
Nickel 12.0 1.51 6.3 0.79
Zinc 10.2 1.29 4.2 0.53
English units—pounds per 1 million ft2 of area processed or coated
Chromium 0.76 0.10 0.31 0.04
Lead 0.2 0.03 0.19 0.002
Nickel 2.46 0.31 1.29 0.16
Zinc 2.09 0.27 0.86 0.11

[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36543, Sept. 6, 1985]