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) Cold rolling mills—(1) Recirculation—single stand.
| 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 | 0.00125 | 0.000626
|
| O&G | 0.000522 | 0.000209
|
| pH | (
1) | (
1)
|
(2) Recirculation—multiple stands.
| 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 | 0.00626 | 0.00313
|
| O&G | 0.00261 | 0.00104
|
| pH | (
1) | (
1)
|
(3) Combination.
| 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 | 0.0751 | 0.0376
|
| O&G | 0.0313 | 0.0125
|
| pH | (
1) | (
1)
|
(4) Direct application—single stand.
| 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 | 0.0225 | 0.0113
|
| O&G | 0.00939 | 0.00376
|
| pH | (
1) | (
1)
|
(5) Direct application—multiple stands.
| 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 | 0.0501
|
| O&G | 0.0417 | 0.0167
|
| pH | (
1) | (
1)
|
(b) Cold worked pipe and tube—(1) Using water.
| 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 | 0.00125 | 0.000626
|
| O&G | 0.000522 | 0.000209
|
| pH | (
1) | (
1)
|
(2) Using oil solutions.
| 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 | 0.00125 | 0.000626
|
| O&G | 0.000522 | 0.000209
|
| pH | (
1) | (
1)
|