October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
State Emission Standards - Diesel: Colorado
COLORADO EMISSION STANDARDS - DIESEL OPACITY
| Application |
Opacity % |
| 14,000 GVWR Or Less |
| Non-Turbo |
40 |
| Turbo |
35 |
| 14,000 GVWR Or More |
| Non-Turbo |
35 |
| Turbo |
20 |