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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

18
Sep
2025

CSI-MS4 Minnesota (CT)

09-18-2025 8:30 am - 09-19-2025 4:30 pm
Online Webinar
$799 + registration
22
Sep
2025

Florida Stormwater Erosion and Sediment Control Inspector

09-22-2025 8:30 am - 09-23-2025 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
24
Sep
2025

CSI MS4 Re-Certification October

09-24-2025 10:30 am -4:30 pm
Online Webinar
$299 + registration
25
Sep
2025

CSI-MS4 Maryland/Pennsylvania (ET)

09-25-2025 8:30 am - 09-26-2025 4:30 pm
Online Webinar
$799 + registration
25
Sep
2025

CSI-MS4 Virginia/Delaware (ET)

09-25-2025 8:30 am - 09-26-2025 4:30 pm
Online Webinar
$799 + registration
29
Sep
2025

CSI-MS4 North Dakota/South Dakota (MT)

09-29-2025 8:30 am - 09-30-2025 4:30 pm
Online Webinar
$799 + registration
29
Sep
2025

CSI-MS4 Utah/Montana (MT)

09-29-2025 8:30 am - 09-30-2025 4:30 pm
Online Webinar
$799 + registration
02
Oct
2025

CSI-MS4 North Carolina (ET)

10-02-2025 8:30 am - 10-03-2025 4:30 pm
Online Webinar
$799 + registration
02
Oct
2025

CSI-MS4 South Carolina (ET)

10-02-2025 8:30 am - 10-03-2025 4:30 pm
Online Webinar
$799 + registration
06
Oct
2025

CSI - CACEO Certified Stormwater Inspector (PDT)

10-06-2025 8:00 am - 10-07-2025 2:00 pm
Online Webinar
$575 + registration
CSI - CACEO Certified Stormwater Inspector (PDT)