| Warning Letter — Bee Line Snack Shop Store #14 | 498347 Jun 9, 2016 |
| Warning Letter — 87Th Street Market | 498286 Jun 9, 2016 |
| Warning Letter — Valero | 498313 Jun 9, 2016 |
| Warning Letter — BI-Rite Liquors | 497726 Jun 2, 2016 |
| Warning Letter — US Smoke Shop | 497580 Jun 2, 2016 |
| Warning Letter — Casey's General Store | 497656 Jun 2, 2016 |
| Warning Letter — Quik Break / Phillips 66 | 497582 Jun 2, 2016 |
| Warning Letter — Casey's General Store | 497502 Jun 2, 2016 |
| Warning Letter — Express Mart / Valero | 497501 Jun 2, 2016 |
| Warning Letter — Phillips 66 | 497672 Jun 2, 2016 |
| Warning Letter — Straub's | 497468 Jun 2, 2016 |
| Warning Letter — Walgreens #12749 | 497634 Jun 2, 2016 |
| Warning Letter — Highway 7 Gas Grocery & Package Store | 497671 Jun 2, 2016 |
| Warning Letter — BP / Shop | 497760 Jun 2, 2016 |
| Warning Letter — Junction Pit Stop / Conoco | 497627 Jun 2, 2016 |
| Warning Letter — 7 Eleven | 497320 May 26, 2016 |
| Warning Letter — Gerbes | 497303 May 26, 2016 |
| Warning Letter — Gier Oil Company Inc | 497272 May 26, 2016 |
| Warning Letter — Schnucks | 497115 May 26, 2016 |
| Warning Letter — BP | 496985 May 26, 2016 |
| Warning Letter — Harter House Supermarket | 497274 May 26, 2016 |
| Warning Letter — Shaw Market | 497035 May 26, 2016 |
| Warning Letter — WALMART | 497319 May 26, 2016 |
| Warning Letter — Johnnies | 496640 May 19, 2016 |
| Warning Letter — Zephyr Xpress | 496610 May 19, 2016 |
| Warning Letter — Drop In Convenience | 495960 May 12, 2016 |
| Warning Letter — Circle K #1654/Shell | 496103 May 12, 2016 |
| Warning Letter — White Oak Station 63 | 495651 May 5, 2016 |
| Warning Letter — Cigarette Depot | 495790 May 5, 2016 |
| Warning Letter — Harold's Conoco Freeman Market | 495819 May 5, 2016 |
| Warning Letter — Discount Smokes & Liquor | 495783 May 5, 2016 |
| Warning Letter — Scrivener Oil Co Inc | 495657 May 5, 2016 |
| Warning Letter — The Mill | 495650 May 5, 2016 |
| Warning Letter — PHILLIPS 66 / GARDEN INN TRUCK PLAZA | 495767 May 5, 2016 |
| Warning Letter — 7 Eleven Store | 495765 May 5, 2016 |
| Warning Letter — 7 Eleven | 495871 May 5, 2016 |
| Warning Letter — Stop-N-Go | 495797 May 5, 2016 |
| Warning Letter — Money Mizer Fuels | 495792 May 5, 2016 |
| Warning Letter — Fast N Friendly | 495659 May 5, 2016 |
| Warning Letter — Gas Trip | 495300 Apr 28, 2016 |
| Warning Letter — JJ Twigs | 495503 Apr 28, 2016 |
| Warning Letter — BP | 495042 Apr 21, 2016 |
| Warning Letter — Thriftway | 495043 Apr 21, 2016 |
| Warning Letter — Walgreens #10587 | 494862 Apr 21, 2016 |
| Warning Letter — Kum & Go #0453 | 494946 Apr 21, 2016 |
| Warning Letter — Buffalo Bullseye | 494432 Apr 14, 2016 |
| Warning Letter — Scotty's Market/Phillips 66 | 494572 Apr 14, 2016 |
| Warning Letter — Everyday 312/Conoco | 494500 Apr 14, 2016 |
| Warning Letter — Fast-N-Friendly | 494561 Apr 14, 2016 |
| Warning Letter — Woods Supermarket | 494430 Apr 14, 2016 |