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

08
Jul
2026

CSI MS4 Re-Certification

07-08-2026 10:30 am -4:30 pm
Online Webinar
$299 + registration
09
Jul
2026

CSI-MS4 New England (ET)

07-09-2026 8:30 am - 07-10-2026 4:30 pm
Online Webinar
$799 + registration
09
Jul
2026

CACEO - Illicit Discharge Detection and Elimination (PDT)

07-09-2026 10:00 am -12:00 pm
Online Webinar
$75 + registration
CACEO - Illicit Discharge Detection and Elimination (PDT)
13
Jul
2026

CSI-MS4 Arkansas-Oklahoma (CT)

07-13-2026 8:30 am - 07-14-2026 4:30 pm
Online Webinar
$799 + registration
13
Jul
2026

CSI-MS4 Louisiana (CT)

07-13-2026 8:30 am - 07-14-2026 4:30 pm
Online Webinar
$799 + registration
13
Jul
2026

CSI-MS4 Texas (CT)

07-13-2026 8:30 am - 07-14-2026 4:30 pm
Online Webinar
$799 + registration
15
Jul
2026

CSI-Industrial West Coast Online (PT)

07-15-2026 8:00 am -4:00 pm
Online Webinar
$399 + registration
16
Jul
2026

Florida Stormwater Erosion and Sediment Control Inspector

07-16-2026 8:30 am - 07-17-2026 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
20
Jul
2026

CSI-MS4 Arizona-Colorado (MT)

07-20-2026 8:30 am - 07-21-2026 4:30 pm
Online Webinar
$799 + registration
20
Jul
2026

CSI-MS4 Nevada-New Mexico-Wyoming (MT)

07-20-2026 8:30 am - 07-21-2026 4:30 pm
Online Webinar
$799 + registration