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

30
Nov
2026

CSI-MS4 Idaho (PT)

11-30-2026 8:30 am - 12-01-2026 4:30 pm
Online Webinar
$799 + registration
30
Nov
2026

CSI-MS4 Washington-Oregon (PT)

11-30-2026 8:30 am - 12-01-2026 4:30 pm
Online Webinar
$799 + registration
02
Dec
2026

CSI MS4 Re-Certification

12-02-2026 10:30 am -4:30 pm
Online Webinar
$299 + registration
03
Dec
2026

Florida Stormwater Erosion and Sediment Control Inspector

12-03-2026 8:30 am - 12-04-2026 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
07
Dec
2026

CSI-MS4 Illinois-Wisconsin-Minnesota (CT)

12-07-2026 8:30 am - 12-08-2026 4:30 pm
Online Webinar
$799 + registration
07
Dec
2026

CSI – Construction West Coast (PT)

12-07-2026 10:00 am - 12-08-2026 4:00 pm
Online Webinar
$599 + registration
09
Dec
2026

CSI-Industrial East Coast Online (ET)

12-09-2026 8:00 am -4:00 pm
Online Webinar
$399 + registration
10
Dec
2026

CSI-MS4 Maryland-Virginia-Delaware (ET)

12-10-2026 8:30 am - 12-11-2026 4:30 pm
Online Webinar
$799 + registration
10
Dec
2026

CSI Industrial Re-Certification (ET)

12-10-2026 10:00 am -4:00 pm
Online Webinar
$299 + registration
14
Dec
2026

CSI-MS4 Iowa-Nebraska (CT)

12-14-2026 8:30 am - 12-15-2026 4:30 pm
Online Webinar
$799 + registration