| Warning Letter — Sinclair | 554682 May 17, 2018 |
| Warning Letter — Sinclair / Fast N Friendly | 554844 May 17, 2018 |
| Warning Letter — Tonto's | 554841 May 17, 2018 |
| Warning Letter — U-GAS / PHILLIPS 66 | 554688 May 17, 2018 |
| Warning Letter — Sunshine Food Mart | 554687 May 17, 2018 |
| Warning Letter — Night Owl Tobacco | 554685 May 17, 2018 |
| Warning Letter — Phillips 66 / Bates 66 | 554678 May 17, 2018 |
| Warning Letter — Cape Mart | 554846 May 17, 2018 |
| Warning Letter — Fast N Friendly | 554689 May 17, 2018 |
| Warning Letter — SNAPPYS CENEX | 554249 May 10, 2018 |
| Warning Letter — Northside Liquor | 554464 May 10, 2018 |
| Warning Letter — Hardin Mini Mart | 554251 May 10, 2018 |
| Warning Letter — VP Racing Fuels | 554254 May 10, 2018 |
| Warning Letter — Happy Rock Smoke Shop | 554252 May 10, 2018 |
| Warning Letter — BP | 554289 May 10, 2018 |
| Warning Letter — Walgreens | 554288 May 10, 2018 |
| Warning Letter — Casey's General Store 2805 | 554003 May 3, 2018 |
| Warning Letter — Dollar General | 553804 May 3, 2018 |
| Warning Letter — Walgreen Co | 554027 May 3, 2018 |
| Warning Letter — Schnucks Fresh Foods | 554001 May 3, 2018 |
| Warning Letter — Discount Smoke Shop | 554026 May 3, 2018 |
| Warning Letter — WHEATON FAMILY MARKET | 553806 May 3, 2018 |
| Warning Letter — Family Dollar #4878 | 554000 May 3, 2018 |
| Warning Letter — 105 Package | 553799 May 3, 2018 |
| Warning Letter — Elite Vaporworks | 553054 May 1, 2018 |
| Warning Letter — BP | 553397 Apr 26, 2018 |
| Warning Letter — Vapor World | 553371 Apr 26, 2018 |
| Warning Letter — The Vape Mall | 553402 Apr 26, 2018 |
| Warning Letter — Casey's General Store | 553608 Apr 26, 2018 |
| Warning Letter — 7 Heaven | 553400 Apr 26, 2018 |
| Warning Letter — Pilot Travel Center | 553648 Apr 26, 2018 |
| Warning Letter — Cool Spot Liquor | 553403 Apr 26, 2018 |
| Warning Letter — Rosebud General Store | 553394 Apr 26, 2018 |
| Warning Letter — 7-Eleven / Conoco | 553647 Apr 26, 2018 |
| Warning Letter — McClains Food Center | 553607 Apr 26, 2018 |
| Warning Letter — Casey's General Store | 553649 Apr 26, 2018 |
| Warning Letter — Cool Valley BP | 553395 Apr 26, 2018 |
| Warning Letter — Heartland Discount Pharmacy | 553646 Apr 26, 2018 |
| Warning Letter — Florissant Food & Liquor | 553396 Apr 26, 2018 |
| Warning Letter — Phillips 66 | 553398 Apr 26, 2018 |
| Warning Letter — Casey's General Store | 553401 Apr 26, 2018 |
| Warning Letter — Gabi's Liquor | 553209 Apr 19, 2018 |
| Warning Letter — Dirt Cheap | 553211 Apr 19, 2018 |
| Warning Letter — Patterson Phillips 66 | 553208 Apr 19, 2018 |
| Warning Letter — Walgreens 3652 | 553213 Apr 19, 2018 |
| Warning Letter — Family Dollar | 553231 Apr 19, 2018 |
| Warning Letter — RAMZEY BP | 553212 Apr 19, 2018 |
| Warning Letter — Walgreens 6024 | 553214 Apr 19, 2018 |
| Warning Letter — Pennington's Supermarket | 552701 Apr 12, 2018 |
| Warning Letter — Dollar General | 552698 Apr 12, 2018 |