| Warning Letter — Family Dollar | 513789 Dec 22, 2016 |
| Warning Letter — Cenex | 513732 Dec 22, 2016 |
| Warning Letter — Dalager's Grocery | 513804 Dec 22, 2016 |
| Warning Letter — Casey's General Store | 513529 Dec 22, 2016 |
| Warning Letter — Super One Foods | 513392 Dec 22, 2016 |
| Warning Letter — Speedy Market | 513511 Dec 22, 2016 |
| Warning Letter — Derrek Olson, LLC | 509792 Dec 15, 2016 |
| Warning Letter — The Corner Store | 512868 Dec 15, 2016 |
| Warning Letter — Severson/Sinclair | 512970 Dec 15, 2016 |
| Warning Letter — Casey's General Store | 513106 Dec 15, 2016 |
| Warning Letter — Beer Oil & Tire | 512897 Dec 15, 2016 |
| Warning Letter — Dollar General | 512895 Dec 15, 2016 |
| Warning Letter — Trail's Travel Center | 512870 Dec 15, 2016 |
| Warning Letter — Casey's General Store | 513065 Dec 15, 2016 |
| Warning Letter — SuperAmerica | 512969 Dec 15, 2016 |
| Warning Letter — River Valley Convenience Store/Cenex | 513017 Dec 15, 2016 |
| Warning Letter — Tonka Bottle Shop | 513057 Dec 15, 2016 |
| Warning Letter — SuperAmerica | 513105 Dec 15, 2016 |
| Warning Letter — EcigWEcig | 512590 Dec 14, 2016 |
| Warning Letter — Dahlin's Super Market | 512050 Dec 8, 2016 |
| Warning Letter — Palubicki's | 512107 Dec 8, 2016 |
| Warning Letter — Miller's Market | 512471 Dec 8, 2016 |
| Warning Letter — Kwik Trip | 512296 Dec 8, 2016 |
| Warning Letter — Smokes Plus | 512498 Dec 8, 2016 |
| Warning Letter — Smokers Choice | 512320 Dec 8, 2016 |
| Warning Letter — Casey's General Store | 512427 Dec 8, 2016 |
| Warning Letter — SuperAmerica | 512108 Dec 8, 2016 |
| Warning Letter — Woodland Marketplace Foods | 512567 Dec 8, 2016 |
| Warning Letter — SuperAmerica | 512082 Dec 8, 2016 |
| Warning Letter — Cenex / Station | 512241 Dec 8, 2016 |
| Warning Letter — Edgar M. Martin | 509787 Dec 7, 2016 |
| Warning Letter — Hopkins Express/Marathon | 511741 Dec 1, 2016 |
| Warning Letter — G-Will Liquors | 511384 Dec 1, 2016 |
| Warning Letter — Casey's General Store | 511364 Dec 1, 2016 |
| Warning Letter — US Grocery & Tobacco | 511556 Dec 1, 2016 |
| Warning Letter — Kwik Trip | 511639 Dec 1, 2016 |
| Warning Letter — Amish Market Square | 511742 Dec 1, 2016 |
| Warning Letter — The Clinic Bar & Grill | 511521 Dec 1, 2016 |
| Warning Letter — Expressway/Cenex | 511073 Nov 23, 2016 |
| Warning Letter — Casey's General Store | 510978 Nov 23, 2016 |
| Warning Letter — Municipal Liquor Store | 510481 Nov 17, 2016 |
| Warning Letter — Walgreens #6280 | 510591 Nov 17, 2016 |
| Warning Letter — BP | 510818 Nov 17, 2016 |
| Warning Letter — Lucky's Station 9 / Marathon | 510762 Nov 17, 2016 |
| Warning Letter — Walgreens | 510817 Nov 17, 2016 |
| Warning Letter — Speedway | 510738 Nov 17, 2016 |
| Warning Letter — Quick Shop/Adium | 510349 Nov 10, 2016 |
| Warning Letter — 8Th Street Market | 510253 Nov 10, 2016 |
| Warning Letter — Cenex | 510381 Nov 10, 2016 |
| Warning Letter — BP | 510382 Nov 10, 2016 |