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

27
Apr
2026

CSI-MS4 Permit Compliance Louisiana (CT)

04-27-2026 8:30 am - 04-28-2026 4:30 pm
Online Webinar
$799 + registration

We are no longer accepting registration for this event

27
Apr
2026

CSI-MS4 Permit Compliance Texas (CT)

04-27-2026 8:30 am - 04-28-2026 4:30 pm
Online Webinar
$799 + registration

We are no longer accepting registration for this event

30
Apr
2026

CSI-MS4 Permit Compliance New Jersey/New York (ET)

04-30-2026 8:30 am - 05-01-2026 4:30 pm
Online Webinar
$799 + registration
04
May
2026

CSI-MS4 Permit Compliance California/Hawai'i (PT)

05-04-2026 8:30 am - 05-05-2026 4:30 pm
Online Webinar
$799 + registration
06
May
2026

CSI Construction Re-Certification

05-06-2026 10:30 am -4:30 pm
Online Webinar
$299 + registration
07
May
2026

CSI-MS4 Permit Compliance North Carolina (ET)

05-07-2026 8:30 am - 05-08-2026 4:30 pm
Online Webinar
$799 + registration
07
May
2026

CSI-MS4 Permit Compliance South Carolina (ET)

05-07-2026 8:30 am - 05-08-2026 4:30 pm
Online Webinar
$799 + registration
07
May
2026

Industrial: Sector G - Metal Mining (Ore Mining and Dressing)

05-07-2026 9:00 am -10:00 am
Online Webinar
$50
07
May
2026

Industrial: Sector H - Coal Mines and Coal Mining Related

05-07-2026 11:00 am -12:00 pm
Online Webinar
$50
07
May
2026

Industrial: Sector I - Oil and Gas Extraction Facilities

05-07-2026 1:00 pm -2:00 pm
Online Webinar
$50