| COMPANY NAME | LOCATION | % OFFERED WHEN AVAILABLE | MAP |
| Co-Op Oil Company | New Vienna | Any Blend | |
| Mulgrew Oil Co. | Dubuque | B2 - B100 | |
| Perfection Oil Co. | Cascade | B2 - B100 | |
| Perfection Oil Co. | Dubuque | B2 - B100 | |
| Perfection Oil Co. | Dyersville | B2 - B100 | |
| Perfection Oil Co. | Farley | B2 - B100 |