Minimum | Maximum | |
Standard rate | 15 | 75 |
Carbonaceous state of separate stage nitrification | 15 | 75 |
Step aeration | 15 | 75 |
Contact stabilization | 50 | 150 |
Extended aeration | 50 | 150 |
Nitrification stage of separate stage nitrification | 50 | 200 |
W. Va. Code R. agency 64, tit. 64, ser. 64-47, tbl. 64-47I