Open AccessClinch River - Environmental Restoration Program (CR-ERP) study, Ambient water toxicity
Author(s) -
D.J. Simbeck
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/486025
Subject(s) - pimephales promelas , ceriodaphnia dubia , mile , environmental science , toxicology , toxicity , biology , fishery , fish <actinopterygii> , acute toxicity , geography , chemistry , minnow , organic chemistry , geodesy
Clinch River - Environmental Restoration Program (CR-ERP) personnel and Tennessee Valley Authority (TVA) personnel conducted a study during the week of January 25-February 1, 1994, as described in the Statement of Work (SOW) document. The organisms specified for testing were larval fathead minnows, Pimephales promelas, and the daphnid, Ceriodaphnia dubia. Surface water samples were collected by TVA Field Engineering personnel from Clinch River Mile 9.0, Poplar Creek Mile 1.0, and Poplar Creek Mile 2.9 on January 24, 26, and 28. Samples were partitioned (split) and provided to the CR-ERP and TVA toxicology laboratories for testing. Exposure of test organisms to these samples resulted in no toxicity (survival or growth) to fathead minnows; however, toxicity to daphnids (significantly reduced reproduction) was demonstrated in undiluted samples from Poplar Creek Mile 1.0 in testing conducted by TVA based on hypothesis testing of data. Point estimation (IC{sub 25}) analysis of the data, however, showed no toxicity in PCM 1.0 samples