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Aquatic Toxicology Branch (ATB)

1621 Mail Service Center 
Raleigh, NC 27699-1621

North Carolina state water quality standards require the protection of all aquatic species from the effects of pollution or other man-induced detriment. Though many numeric water quality standards are based on the measured effects of individual chemicals, measurements can be made of only a small percentage of the chemicals in production today and those measurements cannot predict the effects of complex chemical mixtures. In order to evaluate these biological effects, aquatic toxicology tests are utilized by the Aquatic Toxicology Branch (ATB), allowing for the determination of the combined effects of all constituents of a solution.

ATB Programs and Information

NPDES compliance and enforcement
Biological laboratory certificaton
Whole Efffluent Toxicity (WET) testing and bioassay organism culture

Information for Permitted Facilities

Facility Whole Effluent Toxicity (WET) testing guidance and reporting forms
Toxicity Reduction Evaluation (TRE) guidance
Biocide application worksheets
The certified biological testing laboratory list 
Whole Effluent Toxicity Program Summary Statistics

Information for Certified Biological Testing Laboratories

Biological Laboratory Certification Rules Review

ATB Staff Contacts:     Main Number   919-743-8401




Cindy Moore

Unit Supervisor 919-743-8442
Hannah Headrick Environmental Analyst 919-743-8422
Carol Hollenkamp QA/QC & Lab Lead 919-743-8440
VACANT Whole Effluent Toxicity Testing 919-743-8441
Susan Meadows Whole Effluent Toxicity Compliance and Enforcement  919-743-8439
Dan Wiltsie Whole Effluent Toxicity Testing  919-743-8443

Water Sciences Section 1621 Mail Service Center Raleigh, NC 27699-1621 919.743.8400