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| Rocky Mountain (PADD 4) Residual Fuel Oil, 0.31 to 1.00% Sulfur Stocks at Refineries (Thousand Barrels) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 129 | 219 | 163 | 317 | 399 | 249 | 172 | |||
| 2000's | 167 | 370 | 121 | 162 | 108 | 60 | 153 | 138 | 37 | 18 |
| 2010's | 20 | 7 | 4 | 13 | 36 | 7 | 4 | 4 | 8 | 17 |
| 2020's | 4 | 4 | 4 | 4 | 4 | 6 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 4/30/2026 |
| Next Release Date: 8/31/2026 |