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State Emission Standards - Diesel: CONNECTICUT
CONNECTICUT EMISSION STANDARDS - DIESEL OPACITY
| Application |
Opacity % |
| 10,000 GVWR Or Less |
| 1979 & Newer |
20 |
| 26,000 GVWR Or More |
| 1974 & Earlier |
70 |
| 1974-90 |
55 |
| 1991 & Newer |
40 |