NC0024538_Monitoring (Report)_20161207

PAT MCCRORY
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DONALD R. VAN DER VAART
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S. JAY ZIMMERMAN
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ENVlROl+tf CNTAL QUALITY
December 7, 2016
Mr. David Hux
Asst. Utilities Director-Operations
Town of Shelby
P.O. Box 207
Shelby, NC 28151
Subject: Bioassay Compliance Inspection
City of Shelby/First Broad River WWTP
NPDES Permit No. NCO024538
Cleveland County
Dear Mr. Hux:
Enclosed is a copy of the laboratory results for the effluent samples collected during the
Bioassay Compliance Inspection performed,at the subject facility on October 18,2016 by Ori Tuvia.
The sampling results revealed that the facility passed the Whole effluent toxicity test(see attached
results). Please inform,the facility's Operator-in-Responsible Charge (ORC)of our findings by
forwarding a copy of the enclosed report.
Should you have any questions concerning this report, please do not hesitate to contact Ori
Tuvia at(704)235-2190,or at [e-mail].
Sincerely,
Orl'Tuvia, Environmental Engineer
Moorelsv ille''Regional Office
Division-of Water Resources,DECt
Enclosures:
Sample Results
Cc..:NPDES Unit
- MRO.Piles _ -
".Cleve�and Coun Health=De artment ty p
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Division of Water Resources
December 6,2016
To: Corey Basinger
Water Quality Regional Operations,MRO
Through: Cind .
gh y A.Moore
Supervisor,Aquatic Toxicology Branch(ATB)
From: Carol Hollenkamp
Quality Assurance Officer,Aquatic Toxicology Branch(ATB)
Subject: Whole effluent toxicity test results
Shelby WWTP
NPDES Pen Wit#NC0024538/001
Cleveland County
The aquatic toxicity test using flow-proportional composite samples of effluent discharged from the
Shelby WWTP has been completed. Shelby WWTP has a permitted effluent discharge of 6 million -
gallons per.day(MGD)entering the First Broad River(7Q I 0 of 44.3 CFS). Whole effluent samples were.
collected on October 18 and October 20 by On Tuvia and facility representative Kenneth Wellmon for
use in a chronic Ceriod'aph pia dubia pass-fail toxicity test. This test passed. Toxicity test information
follows.,
Test Type 3-Brood Ceriodaphnia duhia chronic pass fail -
Test Concentrations 17%
Test Result Pass
Control Survival 92°;o
Control Mean Reproduction. 216 neonates
Test Treatment'Survival 100%
Treatment Mean`.Reproduction 28.9 neonates
First Sample H. 7.28 SLT
p f
First Sample Conductivity 377 mieromhos/cm
First Sample Total Residual Chlorine <0.10 mg/L
Second Sample pH 7.26 SU
Second Sample Conductivity 406 micromhos/cm
Second Sample'Total Residual Chlorine <0.1 O mg/L
Test results for the above samples indicate,that the effluent�trduld not be predicted to have water:quality
nn acts Theses les were, Itt with Men: a The test conducted.b. 'Meritech'lnc:also passed,
p - �, y ,
Please contact us..you have any questions or if further of ue�t toxicity monitoring;is desired. We;may
be reached at(919)743 r8 401..
Basin: 9RD04
eG.. ., :_ Central files
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