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Code of Federal Regulations Title 40. Protection of Environment § 40.420.94 New source performance standards (NSPS)
Current as of January 02, 2025 | Updated by Findlaw Staff
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
5.72 |
2.45 |
|
O&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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.
(3) Pipe, tube, and other products.
|
SUBPART I |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
5.72 |
2.45 |
|
O&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
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&G1 |
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 |
||
|---|---|---|
|
New source performance standards |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
5.72 |
2.45 |
|
O&G1 |
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.
Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.420.94 New source performance standards (NSPS) - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-420-94/
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.
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