NC0024244_Split Tox sample data_20220707

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environmental Quality
July 7, 2022
Mr. Ross Holshouser, Director of Public Works
City of Albemarle
Post Office Box 190
Albemarle, North Carolina 28002-0190
Subject: Toxicity Test Results
City of Albemarle/Long Creek WWTP
NPDES Permit No. NC0024244
Stanly County
Mr. Holshouser:
Enclosed is a copy of the toxicity test results relative to the samples collected at the subject
facility on June 14 and 16, 2022 by Mr. Roberto Scheller of this Office. Whole 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.
Roberto Scheller at [phone], or at [e-mail] and
[e-mail].
Enclosure: Toxicity Test Results
Sincerely,
DocuSigned by:
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W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Cc: Brandon Plyler (ORC) email: bplyler(a�ci.albemarle.nc.us
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North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000

DocuSign Envelope ID: E19055F1-25F8-4877-9A84-CE0A53788B4F
DWR
6ivision of Water Resources
July 7, 2022
MEMORANDUM
To: Corey Basinger
Water Quality Regional Operations, MRO
Through: Cindy A. Moore
Supervisor, Aquat &Idcology Branch (ATB)
From: Lorimar S. Henni btk
Environmental Specialist II, Aquatic Toxicology Branch (ATB)
Subject: Whole effluent toxicity test results
Long Creek WWTP
NPDES Permit # NC0024244/001
Stanly County
The aquatic toxicity test using flow -proportional composite samples of effluent discharged from
the Long Creek WWTP has been completed. Long Creek WWTP has a permitted effluent
discharge of 16.0 million gallons per day (MGD) entering Long Creek (7Q10 of 1.6 CFS). Whole
effluent samples were collected on June 14 and June 16 by Roberto Scheller 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 90%
Control Survival 100%
Control Mean Reproduction 31.8 neonates
Test Treatment Survival 100%
Treatment Mean Reproduction 31.0 neonates
First Sample pH 6.68 SU
First Sample Conductivity 468 micromhos/cm
First Sample Total Residual Chlorine <0.2 mg/L
Second Sample pH 5.56 SU
Second Sample Conductivity 437 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: Yadkin -Pee Dee
cc: Roberto Scheller (MRO)