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

22
Oct
2026

CSI-MS4 New England (ET)

10-22-2026 8:30 am - 10-23-2026 4:30 pm
Online Webinar
$799 + registration
22
Oct
2026

Water Quality Standards, 303(d) Lists, TMDLs (EST)

10-22-2026 12:00 pm -4:00 pm
Online Webinar
$324 + registration
26
Oct
2026

CSI-MS4 Arizona-Colorado (MT)

10-26-2026 8:30 am - 10-27-2026 4:30 pm
Online Webinar
$799 + registration
26
Oct
2026

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

10-26-2026 8:30 am - 10-27-2026 4:30 pm
Online Webinar
$799 + registration
28
Oct
2026

CSI-Industrial Midwest Online (CT)

10-28-2026 8:00 am -4:00 pm
Online Webinar
$399 + registration
29
Oct
2026

Florida Stormwater Erosion and Sediment Control Inspector

10-29-2026 8:30 am - 10-30-2026 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
02
Nov
2026

CSI-MS4 Florida-Georgia (ET)

11-02-2026 8:30 am - 11-03-2026 4:30 pm
Online Webinar
$799 + registration
02
Nov
2026

CSI-MS4 Puerto Rico (AT)

11-02-2026 8:30 am - 11-03-2026 4:30 pm
Online Webinar
$799 + registration
05
Nov
2026

CSI-MS4 Ohio-Pennsylvania (ET)

11-05-2026 8:30 am - 11-06-2026 4:30 pm
Online Webinar
$799 + registration
05
Nov
2026

CSI-MS4 West Virginia (ET)

11-05-2026 8:30 am - 11-06-2026 4:30 pm
Online Webinar
$799 + registration