NC0004375_Inspection_20190417

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Mr. Ken Hausle
Clariant Corporation
4000 Monroe Road.
Charlotte, North Carolina 28205
Dear Mr. Hausle:
NORTH CAROLINA
Environmental Quality
17 April 2019
Subject: Toxicity Test Results
Clariant Corp./Mt. Holly East WWTP
NPDES Permit No. NC0004375
Mecklenburg County
Enclosed is a copy of the toxicity test results relative to the samples collected at the subject facility on March 19 and 21,
2019, by Mr. Wes Bell of this Office. Effluent samples were collected for use in a chronic Ceriodaphnia dubia Pass/Fail toxicity
test. The test Passed utilizing these samples.
The report should be self-explanatory; however, should you have any questions concerning this report, please do
not hesitate to contact Ms. Carol Hollenkamp at [phone] and/or Mr. Bell at [phone], or via email at
carol.hollenkampkncdenr.gov and wes.bell(a,ncdenr.gov.
Sincerely,
DocuSigned by:
A14CC681AF27425...
W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Enclosure:
Toxicity Test Results
D Q
� North Carolina Department of Environmental Quality I Division of Water Resources
Mooresville Regional Office 1 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
NORTH CAROLINA
Da"MoM a enWmn�bl mwnq 704,663.1699

Division of Water Resources
April 15, 2019
MEMORANDUM
To: Corey Basinger
Water Quality Regional Operations, MRO
Through: Cindy A. Moore
Supervisor, Aquatic Toxicology Branch (ATB)
From: Carol Hollenkamp
Quality Assurance O icer, Aquatic Toxicology Branch (ATB)
Subject: Whole effluent toxicity test results
Clariant Corp. Mt. Holly Plant
NPDES Permit # NC0004375/001
Mecklenburg County
The aquatic toxicity test using flow -proportional composite samples of effluent discharged from
the Clariant Corp. Mt. Holly Plant has been completed. Clariant Corp. Mt. Holly Plant has a
permitted effluent discharge of 3.9 million gallons per day (MGD) entering Catawba River (7Q10
of 329 CFS). Whole effluent samples were collected on March 19 and March 21 by Wes Bell and
facility representative Dwayne Wallace for use in a chronic Ceriodaphnia dubia pass -fail toxicity
test. The test passed. Toxicity test information follows.
Test Type
Test Result
Test Concentration
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia chronic pass -fail
Pass
0.8%
92%
27.6 neonates
100
26.2 neonates
7.34 SU
780 micromhos/cm
<0.1 mg/L
7.19 SU
785 micromhos/cm
<0.1 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have
water quality impacts. Please contact us if you have any questions or if further effluent toxicity
monitoring is desired. We may be reached at [phone].
Basin: Catawba
cc: Wes Bell (MRO)