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Elimination of WHole Effluent Toxicity NPDES Permit Limits through the Use of an Alternative Testing Species and Resonable Potential Analysis.

DE2004824782

Publication Date	2001
Personal Author	Payne, W. L.
Page Count	12
Abstract	The cladoceran, Ceriodaphnia dubia (C. dubia), is required by the State of South Carolina to be used in whole effluent toxicity (WET) compliance tests in order to meet limits contained within National Pollutant Discharge Elimination System (NPDES) permits. Westinghouse Savannah River Company (WSRC) experienced WET test failures for no clear reason over a long period of time. Toxicity identification examinations on effluents did not indicate the presence of toxicants; therefore, the WET test itself was brought under suspicion. Research was undertaken with an alternate cladoceran, Daphnia ambigua (D. ambigua). It was determined that this species survives better in soft water, so approval was obtained from regulating authorities to use this ''alternate'' species in WET tests. The result was better test results and elimination of non-compliances. The successful use of D. ambigua allowed WSRC to gain approval from the South Carolina Department of Health and Environmental Control (SCDHEC) to remove WET limits from the NPDES permit.
Keywords	Savannah river plant Toxicity Water quality Compliance Indicator species Limiting values South Carolina NPDES(National Pollutant Discharge Elimination System) Ceriodaphnia dubia Daphnia ambigua
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Westinghouse Savannah River Co., Aiken, SC.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200507

Elimination of WHole Effluent Toxicity NPDES Permit Limits through the Use of an Alternative Testing Species and Resonable Potential Analysis.

Elimination of WHole Effluent Toxicity NPDES Permit Limits through the Use of an Alternative Testing Species and Resonable Potential Analysis.
DE2004824782

Publication Date	2001
Personal Author	Payne, W. L.
Page Count	12
Abstract	The cladoceran, Ceriodaphnia dubia (C. dubia), is required by the State of South Carolina to be used in whole effluent toxicity (WET) compliance tests in order to meet limits contained within National Pollutant Discharge Elimination System (NPDES) permits. Westinghouse Savannah River Company (WSRC) experienced WET test failures for no clear reason over a long period of time. Toxicity identification examinations on effluents did not indicate the presence of toxicants; therefore, the WET test itself was brought under suspicion. Research was undertaken with an alternate cladoceran, Daphnia ambigua (D. ambigua). It was determined that this species survives better in soft water, so approval was obtained from regulating authorities to use this ''alternate'' species in WET tests. The result was better test results and elimination of non-compliances. The successful use of D. ambigua allowed WSRC to gain approval from the South Carolina Department of Health and Environmental Control (SCDHEC) to remove WET limits from the NPDES permit.
Keywords	Savannah river plant Toxicity Water quality Compliance Indicator species Limiting values South Carolina NPDES(National Pollutant Discharge Elimination System) Ceriodaphnia dubia Daphnia ambigua
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Westinghouse Savannah River Co., Aiken, SC.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200507