40 CFR 420.94 - New source performance standards (NSPS).

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

§ 420.94 - New source performance standards (NSPS).

The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below.

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

Subpart I

Pollutant or pollutant property	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		kg/kkg (pounds per 1,000 lb) of product		TSS	0.0146	0.00626	O&G*	0.00626	0.00209	Lead	0.0000939	0.0000313	Zinc	0.000125	0.0000417	pH	( 1)	( 1)

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

1 Within the range of 6.0 to 9.0.

(2) Bar, billet, and bloom.

Subpart I

Pollutant or pollutant property	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		kg/kkg (pounds per 1,000 lb) of product		TSS	0.00876	0.00376	O&G*	0.00376	0.00125	Lead	0.0000563	0.0000188	Zinc	0.0000751	0.0000250	pH	( 1)	( 1)

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

1 Within the range of 6.0 to 9.0.

(3) Strip, sheet, and plate.

Subpart I

Pollutant or pollutant property	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0117	0.00501	O&G 1	0.00501	0.00167	Lead	0.0000751	0.0000250	Zinc	0.000100	0.0000334	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	New source performance standars		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0204	0.00876	O&G 1	0.00876	0.00292	Lead	0.000131	0.0000438	Zinc	0.000175	0.0000584	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	New source performance standars		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	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0175	0.00751	O&G 1	0.00751	0.00250	Lead	0.000113	0.0000376	Zinc	0.000150	0.0000501	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	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0117	0.00501	O&G 1	0.00501	0.00167	Lead	0.0000751	0.0000250	Zinc	0.000100	0.0000334	pH	( 2)	( 2)

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

1 Within the range of 6.0 to 9.0.

(3) Pipe, tube, and other products.

Subpart I

Pollutant or pollutant property	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0321	0.0138	O&G 1	0.0138	0.00459	Lead	0.000206	0.0000688	Zinc	0.000275	0.0000918	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	New source performance standards		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.

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

Subpart I

Pollutant or pollutant property	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		kg/kkg (pounds per 1,000 lb) of product		TSS	0.0204	0.00876	O&G 1	0.00876	0.00292	Chromium	0.000292	0.000117	Nickel	0.000263	0.0000876	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	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		kg/kkg (pounds per 1,000 lb) of product		TSS	0.0117	0.00501	O&G 1	0.00501	0.00167	Chromium	0.000167	0.0000667	Nickel	0.000150	0.0000501	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	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0496	0.0213	O&G 1	0.0213	0.00710	Chromium	0.000710	0.000284	Nickel	0.000638	0.000213	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	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0175	0.00751	O&G 1	0.00751	0.00250	Chromium	0.000250	0.000100	Nickel	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.

(5) Pipe, tube, and other products.

Subpart I

Pollutant or pollutant property	New source performance standards		Maximum for any 1 day	Average of daily values for 30 consecutive days		Kg/kkg (pounds per 1,000 lb) of product		TSS	0.0292	0.0125	O&G 1	0.0125	0.00418	Chromium	0.000418	0.000167	Nickel	0.000376	0.000125	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	New source performance standards		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, as amended at 49 FR 21032, May 17, 1984]