NC0000396_Compliance Evaluation Inspection_20220718

DocuSign Envelope ID: 0E1 ECE99-7BCA-4677-8ECC-73E64A40287F
July 7, 2022
MEMORANDUM
DWR
Division of Water Resources
To: Landon Davidson
Water Quality Regional Operations, ARO
DS
Through: Cindy A. Moore Oh
Supervisor, Aquatic T logy Branch (ATB)
From: Lorimar S. Henning bik
Environmental Specialist II, Aquatic Toxicology Branch (ATB)
Subject: Whole effluent toxicity test results
Asheville Steam Electric Plant
NPDES Permit # NC0000396/001
Buncombe County
The aquatic toxicity test using grab samples of effluent discharged from the Asheville Steam
Electric Plant has been completed. Asheville Steam Electric Plant effluent discharge enters the
French Broad River (7Q10 of 375 CFS). Whole effluent samples were collected on June 7 and
June 9 by Tim Heim and facility representative Christian Patterson for use in a chronic
Ceriodaphnia dubia pass -fail toxicity test. The test passed. Toxicity test information follows.
Test Type 3-Brood Ceriodaphnia dubia chronic pass -fail
Test Result Pass
Test Concentrations 1.8%
Control Survival 100%
Control Mean Reproduction 29.9 neonates
Test Treatment Survival 100%
Treatment Mean Reproduction 26.3 neonates
First Sample pH 8.79 SU
First Sample Conductivity 694 micromhos/cm
First Sample Total Residual Chlorine <0.2 mg/L
Second Sample pH 7.72 SU
Second Sample Conductivity 693 micromhos/cm
Second Sample Total Residual Chlorine <0.2 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have
water quality impacts. These samples were split and tested by Environmental Testing Solutions,
Inc. (ETS). The chronic Ceriodaphnia dubia pass/fail test run by ETS resulted in a pass. Please
contact us if you have any questions or if further effluent toxicity monitoring is desired. We may
be reached at [e-mail].
Basin: French Broad
cc: Tim Heim (ARO)