NC0023868_Toxicity Test Results_20200908

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ROY COOPER
Governor
MICHAEL S.REGAN .e
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
September 8, 2020
Mr. Robert C. Patterson, Jr., PE
Director of Water Resources
City of Burlington
P.O. Box 1358
Burlington,NC 27216-1358
Subject: Toxicity Test Results
East Burlington POTW
NPDES Permit No. NCO023868
Alamance County
Dear Mr. Patterson:
Please find attached a copy of the toxicity test results for samples obtained from the East Burlington
effluent. Aliquots from the East Burlington composite sample were collected on August 11 and 13,
2020 by Mike Mickey and Jordan Burbage of this office for use in a chronic Ceriodaphnia dubia
pass/fail toxicity test conducted by the Division's Aquatic Toxicology Branch laboratory. The East
Burlington POTW effluent passed this test at the permitted effluent concentration of 36%. The test j
treatment survival rate was 100%.
Should you have any questions concerning this report,please do not hesitate to contact Mike Mickey
at(336)776-9692. Our office appreciates the assistance of the W WTP staff in collecting the samples.
Sincerely,
J Lon T. Snider, Regional Supervisor
Water Quality Regional Operations Section ;
Division of Water Resources,NCDEQ
Enclosure: Toxicity Test Results
cc: Darrin Allred ([e-mail])
WSRO
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North Carolina Department of Environmental Quality I Division of Water Resources
_ � Winston-Salem Regional Office 1450 West Hanes Mill Road,Suite 3001 Winston-Salem,North Carolina 27105
oewwwe+ wwei� /� 336,776.9800

ter,
Division of WetOraResqurces
August 2%,2020
MEMORttNb6M
To.' LQhInider
WMAr'.Eluality Regional Operadogs,WSAO
Through: Cindy A. Moore
Supirvisor,gquatie Toxicology Brandt KM
From: Luriina#&, Henning
Envirgnnlentaf5,peelallst 11�Aquatic Tox'ieolpgy Fttanch'(ATBt
Stibject: Whole effuent Coxieity'test results.
Burlington East WWT.P
NPDES Permit#NC0023868/001
Alama0cd County
The aquatic toxicity tg4jksing ftow-peopgitidnal comifto ite_sarnplesof effluent-dischargedfrpm
the Burfing#on. dstWWTPhas"l3e!h..compfeted. Burlingtan;EastWWTPhasa,perrtiitte�fef#jUunt
discharge of 12.0 mrltion gallons per day(MGDj eM4ering Rig Alamance Creek(.701I ;rJ#3g:6 C0S
Whole effluent sampfo were,.collected qn August 11 and August` by Mike fN cltey and facility
representatides;Darr n,Allred'ond Jon4tha0 Thoritpsbkl for usa=lne chronic4erivdapurdq du o'
pass-fail toxicity test The test passed. Toxicity test information follows,
Test Type 3-BroPd Cedibda(Jhrtiptludra eArlicpass ail
test:Resutt Pass
TestConcenfrotions k% W
Cootrgt SurV!ual 10M
Control Mean Reproduction 22.0 neonates
?est'`I`reatm�rit Si�rvlval. 100%
Treatment Mean Reproduction ns neonates
First Sample pH 7.67 SU
First,ample,Conductivity 472 mlcromhos/cm
First,55ampte Total_ResidWI Chlorine. G0.1 mgfL
Second5athplepH 7...79,SU
Second Satnple Conductivity 514 micronmos/em
Second Sample Total Residual Chlorine <U.1 mg/L
Test results for the afiove samples indicate that the affluent would not he predicted,to have
vaster quality impacts. Please contact us if you haveany questions or if further effluent toxicity
monitoring Is deslrod. We may be reached at(914)70-8401.
Basin., Caere Fear,
cc. Mike Mickey(WSRO)