Event date: 8/23/2023 Export event Lauren Desena / Friday, July 28, 2023 / Categories: Uncategorized OWT171: Nitrogen Removing Biofilters (NRBs) on Long Island, NY (4 TCH) UPCOMING SEPTIC INDUSTRY TRAINING EVENTS Click on the links, or see the calendar, for more information. Register for 2023 Online Wastewater Training Classes Print 86