Aquatic Toxicology Branch (ATB)
Branch Main Number: 919-743-8401
ATTENTION: REVISED ATB CRITERIA & PROCEDURES
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Our Mailing Address has changed, please make a note.
The new address is :
1623 Mail Service Center Raleigh, NC 27699-1623
About the Aquatic Toxicology Branch
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.
NPDES compliance and enforcement
Biological laboratory certificaton
Whole Efffluent Toxicity (WET) testing and bioassay organism culture
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
Whole Effluent Toxicity (WET) testing procedures
Whole Effluent Toxicity (WET) testing reporting forms
Laboratory ceritifcation guidance
Laboratory certification and certification renewal applications
ATB Staff Contacts:
Water Sciences Section 1623 Mail Service Center Raleigh, NC 27699-1623 919.743.8400