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.
(a) Salt bath descaling, oxidizing—(1) Batch, sheet and plate.
| Pollutant or pollutant property
| Pretreatment standards for existing sources
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| Kg/kkg (pounds per 1,000 lb) of product
|
| Chromium | 0.00292 | 0.00117
|
| Nickel | 0.00263 | 0.000876 |
(2) Batch, rod and wire.
| Pollutant or pollutant property
| Pretreatment standards for existing sources
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| Kg/kkg (pounds per 1,000 lb) of product
|
| Chromium | 0.00175 | 0.000701
|
| Nickel | 0.00158 | 0.000526 |
(3) Batch, pipe and tube.
| Pollutant or pollutant property
| Pretreatment standards for existing sources
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| Kg/kkg (pounds per 1,000 lb) of product
|
| Chromium | 0.00709 | 0.00284
|
| Nickel | 0.00638 | 0.00213 |
(4) Continuous.
| Pollutant or pollutant property
| Pretreatment standards for existing sources
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| Kg/kkg (pounds per 1,000 lb) of product
|
| Chromium | 0.00138 | 0.000551
|
| Nickel | 0.00124 | 0.000413 |
(b) Salt bath descaling, reducing—(1) Batch.
| Pollutant or pollutant property
| Pretreatment standards for existing sources
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| Kg/kkg (pounds per 1,000 lb) of product
|
| Cyanide | 0.00102 | 0.000339
|
| Chromium | 0.00136 | 0.000542
|
| Nickel | 0.00122 | 0.000407 |
(2) Continuous.
| Pollutant or pollutant property
| Pretreatment standards for existing sources
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| Kg/kkg (pounds per 1,000 lb) of product)
|
| Cyanide | 0.00569 | 0.00190
|
| Chromium | 0.00759 | 0.00304
|
| Nickel | 0.00683 | 0.00228 |