40 CFR 420.87 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

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§ 420.87 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

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 conventional technology.

(a) Salt bath descaling, oxidizing -

(1) Batch, sheet and plate.

Subpart H

Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.204 0.0876
pH ( 1) ( 1)

1 Within the range of 6.0 to 9.0.

(2) Batch, rod and wire.

Subpart H

Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.123 0.0526
pH ( 1) ( 1)

1 Within the range of 6.0 to 9.0.

(3) Batch, pipe and tube.

Subpart H

Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.496 0.213
pH ( 1) ( 1)

1 Within the range of 6.0 to 9.0.

(4) Continuous.

Subpart H

Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0964 0.0413
pH ( 1) ( 1)

1 Within the range of 6.0 to 9.0.

(b) Salt bath descaling, reducing -

(1) Batch.

Subpart H

Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0949 0.0407
pH ( 1) ( 1)

1 Within the range of 6.0 to 9.0.

(2) Continuous.

Subpart H

Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.532 0.228
pH ( 1) ( 1)

1 Within the range of 6.0 to 9.0.

[47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982]

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