____________________________________________________
| | |
| contaminant | concentration for |
| | each process |
|___________________________|________________________|
| | |
| copper, selenium, | |
| arsine and lead | 25 mg/Nm3 |
|___________________________|________________________|
| | |
| cadmium, tellurium | |
| and hexavalent chromium | 10 mg/Nm3 |
|___________________________|________________________|
| | |
| arsenic hydrogen | 1.5 ppm |
|___________________________|________________________|