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.
| 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)
|
(2) With scarfing.
| 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)
|
(b) Section mills—(1) Carbon.
| 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)
|
(2) Specialty.
| 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)
|
(c) Flat mills—(1) Hot strip and sheet mills, carbon and specialty.
| 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)
|
(2) Carbon plate mills.
| 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)
|
(3) Specialty plate mills.
| 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)
|
(d) Pipe and tube mills, carbon and specialty.
| 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)
|