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e-CFR data is current as of September 28, 2020

Title 40Chapter ISubchapter NPart 466Subpart B → §466.23


Title 40: Protection of Environment
PART 466—PORCELAIN ENAMELING POINT SOURCE CATEGORY
Subpart B—Cast Iron Basis Material Subcategory


§466.23   New source performance standards.

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

(a) There shall be no discharge of process wastewater pollutants from metal preparation operations.

(b) The discharge of process wastewater pollutants from all porcelain enameling coating operations shall not exceed the values set forth below:

Subpart B—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
            
   Mg/m2 (pounds per million ft2) of area coated
Chromium0.47(0.10)0.19(0.04)
Lead0.13(0.03)0.11(0.02)
Nickel0.69(0.14)0.47(0.10)
Zinc1.29(0.27)0.53(0.11)
Aluminum3.82(0.78)1.56(0.32)
Iron1.55(0.32)0.79(0.16)
Oil and grease12.60(2.58)12.60(2.58)
TSS18.91(3.87)15.12(3.10)
pH(1)(1)(1)(1)

1Within the range 7.5 to 10.0 at all times.

[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36544, Sept. 6, 1985]

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