40 CFR 420.92 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

View all text of Subpart I [§ 420.90 - § 420.97]

§ 420.92 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

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 practicable control technology currently available.

(a) Sulfuric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.

Subpart I

Pollutant or pollutant property	BPT 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	0.0818	0.0350	O&G 1	0.0350	0.0117	Lead	0.000526	0.000175	Zinc	0.000701	0.000234	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(2) Bar, billet and bloom.

Subpart I

Pollutant or pollutant property	BPT 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	0.0263	0.0113	O&G 1	0.0113	0.00375	Lead	0.000169	0.0000563	Zinc	0.000225	0.0000751	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(3) Strip, sheet and plate.

Subpart I

Pollutant or pollutant property	BPT 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	0.0526	0.0225	O&G 1	0.0225	0.00751	Lead	0.000338	0.000113	Zinc	0.000451	0.000150	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(4) Pipe, tube and other products.

Subpart I

Pollutant or pollutant property	BPT 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	0.146	0.0626	O&G 1	0.0626	0.0209	Lead	0.000939	0.000313	Zinc	0.00125	0.000417	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(5) Fume scrubbers.

Subpart I

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kilograms per day		TSS	5.72	2.45	O&G 1	2.45	0.819	Lead	0.0368	0.0123	Zinc	0.0491	0.0164	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

The above limitations shall be applicable to each fume scrubber associated with a sulfuric acid pickling operation.

(b) Hydrochloric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.

Subpart I

Pollutant or pollutant property	BPT 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	0.143	0.0613	O&G 1	0.0613	0.0204	Lead	0.000920	0.000307	Zinc	0.00123	0.000409	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(2) Strip, sheet and plate.

Subpart I

Pollutant or pollutant property	BPT 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	0.0818	0.0350	O&G 1	0.0350	0.0117	Lead	0.000526	0.000175	Zinc	0.000701	0.000234	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(3) Pipe, tube and other products.

Subpart I

Pollutant or pollutant property	BPT 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	0.298	0.128	O&G 1	0.128	0.0426	Lead	0.00192	0.000638	Zinc	0.00255	0.000851	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(4) Fume scrubbers.

Subpart I

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kilograms per day		TSS	5.72	2.45	O&G 1	2.45	0.819	Lead	0.0368	0.0123	Zinc	0.0491	0.0164	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

The above limitations shall be applicable to each fume scrubber associated with a hydrochloric acid pickling operation.

(5) Acid regeneration (absorber vent scrubber).

Subpart I

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kilograms per day		TSS	38.2	16.3	O&G 1	16.3	5.45	Lead	0.245	0.0819	Zinc	0.327	0.109	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

The above limitations shall be applicable to the absorber vent scrubber wastewater associated with hydrochloric acid regeneration plants.

(c) Combination acid pickling (spent acid solution and rinse waters)—(1) Rod, Wire, and Coil.

Subpart I

Pollutant or pollutant property	BPT 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	0.149	0.0638	O&G 1	0.0638	0.0213	Chromium	0.00213	0.000852	Nickel	0.00192	0.000638	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(2) Bar, billet, and bloom.

Subpart I

Pollutant or pollutant property	BPT 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	0.0672	0.0288	O&G 1	0.0288	0.00960	Chromium	0.000960	0.000384	Nickel	0.000864	0.000288	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(3) Strip, sheet, and plate—continuous.

Subpart I

Pollutant or pollutant property	BPT 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	0.438	0.188	O&G 1	0.188	0.0626	Chromium	0.00626	0.00250	Nickel	0.00563	0.00188	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(4) Strip, sheet and plate—batch.

Subpart I

Pollutant or pollutant property	BPT 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	0.134	0.0576	O&G 1	0.0576	0.0192	Chromium	0.00192	0.000768	Nickel	0.00173	0.000576	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(5) Pipe, tube, and other products.

Subpart I

Pollutant or pollutant property	BPT 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	0.225	0.0964	O&G 1	0.0964	0.0322	Chromium	0.00322	0.00129	Nickel	0.00289	0.000964	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

(6) Fume scrubbers.

Subpart I

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kilograms per day		TSS	5.72	2.45	O&G 1	2.45	0.819	Chromium	0.0819	0.0327	Nickel	0.0735	0.0245	pH	( 2)	( 2)

1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2 Within the range of 6.0 to 9.0.

The above limitations shall be applicable to each fume scrubber associated with a combination acid pickling operation. [47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982, as amended at 49 FR 21030, May 17, 1984]