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

02
Mar
2026

CSI-MS4 Minnesota (CT)

03-02-2026 8:30 am - 03-03-2026 4:30 pm
Online Webinar
$799 + registration
04
Mar
2026

CSI Industrial Re-Certification (ET)

03-04-2026 10:30 am -4:30 pm
Online Webinar
$299 + registration
05
Mar
2026

CSI-MS4 Ohio/Pennsylvania (ET)

03-05-2026 8:30 am - 03-06-2026 4:30 pm
Online Webinar
$799 + registration
05
Mar
2026

CSI-MS4 West Virginia (ET)

03-05-2026 8:30 am - 03-06-2026 4:30 pm
Online Webinar
$799 + registration
09
Mar
2026

CSI-MS4 Idaho (PT)

03-09-2026 8:30 am - 03-10-2026 4:30 pm
Online Webinar
$799 + registration
09
Mar
2026

CSI-MS4 Washington/Oregon (PT)

03-09-2026 8:30 am - 03-10-2026 4:30 pm
Online Webinar
$799 + registration
11
Mar
2026

CSI-Industrial West Coast Online (PT)

03-11-2026 8:00 am -4:00 pm
Online Webinar
$399 + registration
12
Mar
2026

Florida Stormwater Erosion and Sediment Control Inspector

03-12-2026 8:30 am - 03-13-2026 4:00 pm
Online Webinar
$225 + registration
Florida Stormwater Erosion and Sediment Control Inspector
16
Mar
2026

CSI-MS4 Arkansas/Oklahoma (CT)

03-16-2026 8:30 am - 03-17-2026 4:30 pm
Online Webinar
$799 + registration
16
Mar
2026

CSI-MS4 Midwest States (CT)

03-16-2026 8:30 am - 03-17-2026 4:30 pm
Online Webinar
$799 + registration