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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
 


Class Registration Calendar

19
Nov
2025

CSI Network November (EDT)

11-19-2025 1:00 pm -2:30 pm
Online Webinar
20
Nov
2025

CSI-Industrial East Coast Online (ET)

11-20-2025 8:00 am -4:00 pm
Online Webinar
$399 + registration
20
Nov
2025

CSI – Construction East Coast (ET)

11-20-2025 10:00 am - 11-21-2025 4:00 pm
Online Webinar
$599 + registration
01
Dec
2025

CSI-MS4 Idaho (PT)

12-01-2025 8:30 am - 12-02-2025 4:30 pm
Online Webinar
$799 + registration
01
Dec
2025

CSI-MS4 Oregon (PT)

12-01-2025 8:30 am - 12-02-2025 4:30 pm
Online Webinar
$799 + registration
01
Dec
2025

CSI-MS4 Washington (PT)

12-01-2025 8:30 am - 12-02-2025 4:30 pm
Online Webinar
$799 + registration
03
Dec
2025

CACEO - Illicit Discharge Detection and Elimination (PDT)

12-03-2025 10:00 am -11:30 am
Online Webinar
$50 + registration
CACEO - Illicit Discharge Detection and Elimination (PDT)
04
Dec
2025

Florida Stormwater Erosion and Sediment Control Inspector

12-04-2025 8:30 am - 12-05-2025 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
08
Dec
2025

CSI-MS4 Delaware/Virginia (ET)

12-08-2025 8:30 am - 12-09-2025 4:30 pm
Online Webinar
$799 + registration
08
Dec
2025

CSI-MS4 Maryland/Pennsylvania (ET)

12-08-2025 8:30 am - 12-09-2025 4:30 pm
Online Webinar
$799 + registration