- When the application of the pesticide is made directly to waters of the United States to control pests that are present in the water, and
- when the application of the pesticide is made to control pests that are over, including near, waters of the United States.
Caltha LLP provides expert consulting services to public and private sector clients nationwide to address water quality standards, wastewater permitting and assessing potential impacts of chemicals in the aquatic environment.
Caltha LLP Aquatic Toxicology / WQ Standards Services Website