Email Us

info@npdes.com

(888) 397-9414

9:00am EST–4:00pm PST

Office Hours

M–F, 9:00am–4:00pm EST

Classes

Register Here

Email Us

info@npdes.com

(888) 397-9414

9:00am EST–4:00pm PST

Office Hours

M–F, 9:00am–4:00pm EST

Classes

Register Here

Email Us

info@npdes.com

 


Class Registration Calendar

14
Sep
2026

CSI-MS4 Kansas-Missouri (CT)

09-14-2026 8:30 am - 09-15-2026 4:30 pm
Online Webinar
$799 + registration
14
Sep
2026

CSI-MS4 Nebraska - Iowa (CT)

09-14-2026 8:30 am - 09-15-2026 4:30 pm
Online Webinar
$799 + registration
17
Sep
2026

CSI-Industrial West Coast Online (PT)

09-17-2026 8:00 am -4:00 pm
Online Webinar
$399 + registration
17
Sep
2026

Florida Stormwater Erosion and Sediment Control Inspector

09-17-2026 8:30 am - 09-18-2026 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
21
Sep
2026

CSI-MS4 Illinois-Wisconsin (CT)

09-21-2026 8:30 am - 09-22-2026 4:30 pm
Online Webinar
$799 + registration
21
Sep
2026

CSI-MS4 Minnesota (CT)

09-21-2026 8:30 am - 09-22-2026 4:30 pm
Online Webinar
$799 + registration
23
Sep
2026

CSI MS4 Re-Certification

09-23-2026 10:30 am -4:30 pm
Online Webinar
$299 + registration
24
Sep
2026

CSI – Construction East Coast (ET)

09-24-2026 10:00 am - 09-25-2026 4:00 pm
Online Webinar
$599 + registration
28
Sep
2026

CSI-MS4 Idaho (MT)

09-28-2026 8:30 am - 09-29-2026 4:30 pm
Online Webinar
$799 + registration
28
Sep
2026

CSI-MS4 Washington - Oregon (PT)

09-28-2026 8:30 am - 09-29-2026 4:30 pm
Online Webinar
$799 + registration