40 CFR 420.77 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

View all text of Subpart G [§ 420.70 - § 420.77]

§ 420.77 - 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) Primary mills, carbon and specialty—(1) Without scarfing.

Subpart G

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	0.150	0.0561	O&G	0.0374		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(2) With scarfing.

Subpart G

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	0.221	0.0830	O&G	0.0553		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(b) Section mills—(1) Carbon.

Subpart G

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	0.357	0.134	O&G	0.0894		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(2) Specialty.

Subpart G

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	0.224	0.0841	O&G	0.0561		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(c) Flat mills—(1) Hot strip and sheet mills, carbon and specialty.

Subpart G

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	0.427	0.160	O&G	0.107		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(2) Carbon plate mills.

Subpart G

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	0.227	0.0851	O&G	0.0568		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(3) Specialty plate mills.

Subpart G

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	0.100	0.0376	O&G	0.0250		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

(d) Pipe and tube mills, carbon and specialty.

Subpart G

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	0.212	0.0795	O&G	0.0530		pH	( 1)	( 1)

1 Within the range of 6.0 to 9.0.

[47 FR 23284, May 27, 1982, as amended at 47 FR 41739, Sept. 22, 1982]