Regulations last checked for updates: Nov 24, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024
§ 420.86 - Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, 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.

(a) Salt bath descaling, oxidizing—(1) Batch, sheet and plate.

Subpart H

Pollutant or pollutant property Pretreatment standards for new sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
Chromium0.002920.00117
Nickel0.002630.000876

(2) Batch, rod and wire.

Subpart H

Pollutant or pollutant property Pretreatment standards for new sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
Chromium0.001750.000701
Nickel0.001580.000526

(3) Batch, pipe and tube.

Subpart H

Pollutant or pollutant property Pretreatment standards for new sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
Chromium0.007090.00284
Nickel0.006380.00213

(4) Continuous.

Subpart H

Pollutant or pollutant property Pretreatment standards for new sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
Chromium0.001380.000551
Nickel0.001240.000413

(b) Salt bath descaling, reducing—(1) Batch.

Subpart H

Pollutant or pollutant property Pretreatment standards for new sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
Cyanide0.001020.000339
Chromium0.001360.000542
Nickel0.001220.000407

(2) Continuous.

Subpart H

Pollutant or pollutant property Pretreatment standards for new sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
Cyanide0.005690.00190
Chromium0.007590.00304
Nickel0.006830.00228
[47 FR 23284, May 27, 1982, as amended at 47 FR 41739, Sept. 22, 1982]
source: 47 FR 23284, May 27, 1982, unless otherwise noted.
cite as: 40 CFR 420.86