SUPPLEMENTAL ENVIRONMENTAL ASSESSMENT TO THE PCMHAB PROGRAMMATIC ENVIRONMENTAL ASSESSMENT: CHEMICAL CONTROL METHOD – NANOBUBBLE OZONE TECHNOLOGY

This Supplemental Environmental Assessment (SEA) incorporates and builds on the PCMHAB PEA by analyzing the environmental effects of ozone as a chemical HABs control method. Ozone will be delivered to the environment through the use of nano-bubble ozone technology (NBOT). This method most closely relates to the hydrogen peroxide chemical method of control. The activities covered in this SEA include small scale field testing of the NBOT method within closed inland water systems (e.g., ponds, lakes, reservoirs, and dead-end canals) that are experiencing degraded environmental conditions from
ngoing HABs outbreaks. The exact geographic location,
oundary, duration of the field test, and size of each field test site identified by NOAA, will be determined on a project-site specific basis in coordination, as appropriate, with the relevant Federal and State agencies and other resource managers, as applicable. No field testing will occur in submerged aquatic vegetation, wetlands, coral reefs or other sensitive habitats. Closed systems may include enclosing part of a natural system for field testing. This SEA and FONSI do not cover NBOT field testing to suit other water safety/security needs such as treating drinking water, sterilization of water, wastewater treatment, agricultural wastewater or runoff water treatment.