NC0020401_Regional Office Historical File Pre 2018 (3)

Pat McCrory
Governor
Mr. Keith Rhyne
City` of Hickory
PO Box 398
Hickory, NC 28603
I ear Rhyne.
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Thomas A. Reeder John E Skvarla„ 111
Acting Director Secretary
Subject.
NPDES Permit: tiCtlf)20401
Catawba County
Enclosed is a copy of the toxicity test results relative to the i.n.spection conducted at the subject facility
on July 9 and I. I, 2013 by Donna Hood of this office and facility representatives. Whole effluent samples were
collected for use in a chronic pass/fail toxicity test. The test utilizing these samples resulted in a pass.
The report should. be self-explanatory; however, should you have any questions concerning this report,
please do not hesitate to contact Ms, Hood at 1v704) 663-l699
re.l
Environr'nental Spec
Surface Water Protection
Moorresv°il le. Regional Office
Enclosure
cc: Central Files
Susan N4eadows, Aq
MocreswinKe Regional Office
610 East eerier Ave) Suite 311 it r suit tts
(704) 663-16991 Fax [phone]), Ctu'lorrer Seriicre ' 877 r6'2:3-6746
http t porVa@.alctteirr.ora,'web4°wq
on
hCarolina
.atu aIiq'

Division f Water Quality
July 25, 2013
To: Michael Parker
Surface Water Protection, MR0
Through: Cindy A. Moore
Supervisor, Aquatic Toxieology
From Carol liollenkamp
Quality Assurance Ofticer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Hickory - Northeast WWTP
NPDES Permit :# NC0020401/001
Catawba County
The aquatic toxicity test using 24-hour flow proportional composite samples of effluent discharged from
Hickory - Northeast WWTP has been completed: Hickory - Northeast WWTP has an effluent discharge
permitted that is 6.0 million gallons per day (M.GD) entering the Catawba River (7Q1 0 of 60.0 CFS).
Whole effluent samples were collected on July 9 and July 11 by Donna Hood and facility representative
Jake Icenhour for use in a chronic Ceriodaphnia dubia pass -fail toxicity test. The test using these samples
resulted in a pass. Toxicity test information follows,
Test Type 3-Brood Ceriodaphina dubia chronic pass fail
Test Concentrations 13%
Test Result: Pass
Control Survival 100%
Control Mean Reproduction 26.8 neonates
Test Treatment Survival 100%
Treatment Mean Reproduction 30.0 neonates
First Sample pH 6.86 SU
First Sample Conductivity 227 micromhoslem
First Sample Total Residual Chlorine <0.10 trig/L
Second Sample pH 6.79 SU
Second Sample Conductivity 208 micromhos
Second Sample Total Residual Chlorine <0,10 mJL
Test results for the above samples indicate that the effluent would not he predicted to have water quality
impacts on receiving water. Please contact us if you have any questions or if further effluent toxicity
monitoring is desired: We may be reached at [phone].
Basin, CTB32
cc: Central Files
Donna Hood, .MR0
uatic Toxico
Environmental Sciences Section