| Week 39 |
| Monday. 21 September, 2026 | |
| 8:30 am |
CSI-MS4 Permit Compliance Illinois-Wisconsin (CT)Online Webinar |
| 8:30 am |
CSI-MS4 Permit Compliance Minnesota (CT)Online Webinar |
| Wednesday. 23 September, 2026 | |
| 10:30 am |
CSI MS4 Re-CertificationOnline Webinar |
| Thursday. 24 September, 2026 | |
| 8:30 am |
CSI-MS4 Inspector - NEW!Online Webinar |
| 10:00 am |
CSI – Construction East Coast (ET)Online Webinar |