NC0020737_Inspection Results_20181203

ROY COOPER
000
MICHAEL S. RECAN
S rerarp
LINDA CULPEPPER
Intedn; Oimfor
NOR•tH CAROLINA
Bnvtronraentat Quality
December 3, 2018
Mr. Ricky Duncan, Water Resources Director
City of Kings Mountain
P.O. Box 429
Kings Mountain, NC28086
Subject: Bioassay Compliance Inspection results
City of Kings Mountain
NPDES Permit No. NC0020737
Dear Mr. Duncan:
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 16, 2018 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 [phone], or at [e-mail].
Sincerely,
Ori Tuvia, Environmental Engineer
Mooresville Regional Office
Division of Water Resources, DEQ
cc: NPDES, MRO files (Laserfiche)
State of North Carol 1 Natal Rcsr.,ar,er, 1Wa:er Q�ia Ity Reglena Oper�tons
Mooresville Rgional Office j 610 East 0en,`.r Avenue. Suite 3011 Mrx-resville. North Carolina 28115
704 663 1699

Division of Water Resources
November 5, 2018
MEMORANDUM
To: Corey Basinger
Water Quality Regional Operations, MRO
Through: Cindy A. Moore���
Supervisor, Aquatic Toxicology Branch (ATB)
From: Carol Hollenkamp H
Quality Assurance Officer, Aquatic Toxicology Branch (ATB)
Subject: Whole effluent toxicity test results
Kings Mountain — Pilot Creek W WTP
NPDES Permit tf NC0020737/001
Cleveland County
The aquatic toxicity test using flow -proportional composite samples of effluent discharged from
the Kings Mtn — Pilot Creek W WTP has been completed. Kings Mtn — Pilot Creek W WTP has a
permitted effluent discharge of 6 million gallons per day (MGD) entering Buffalo Creek (7Q10 of
19 CFS). Whole effluent samples were collected on October 16 and October 18 by Ori Tuvia for
use in a chronic Ceriodaphnia dubia pass -fail toxicity test. The test passed. Toxicity test
information follows.
Test Type 3-BroodCeriodaphniadubiachronic pass -fail
Test Result Pass
Test Concentrations
33%
Control Survival
100%
Control Mean Reproduction
25.9 neonates
Test Treatment Survival
100%
Treatment Mean Reproduction 22.0 neonates
First Sample pH 7.23 SU
First Sample Conductivity 1.62 millimhos/cm
First Sample Total Residual Chlorine <0.1 mg/L
Second Sample pH 7.26 SU
Second Sample Conductivity 2.09 millimhos/cm
Second Sample Total Residual Chlorine <0.1 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 ETT. The chronic Ceriodaphnia
dubia pass/fail test run by ETT 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 [phone].
Basin: Broad
cc: Ori Tuvia (MRO)