NC0021628_Compliance Evaluation Inspection_20161028

PAT MCCRORY .
a
Governor
DONALD R. VAN DER VAART
Secretary
WaterResources .
ENVIRONMENTAL ounLm g� /S�. JAY ZIMMER�MAN
October 28, 2016
RECEIVEDIMCDEOR i�i�eI,
NOV 0 2 2015
water Quality
ion
Permitting Sec
Mr. John Mullis,
Town Administrator
Post Office Box 679
Norwood, North Carolina 28128
SUBJECT: Compliance Evaluation Inspection
Norwood WWTP
NPDES Permit NC0021'628
Stanly County, NC
Dear Mr. Mullis:
On September 13 and 15, 2016, Roberto Scheller of this Office collected samples for effluent
toxicity test at the subject facility. The laboratory results for the subject toxicity testing are
enclosed with this cover. We wish to thank you and the operating staff for assistance regarding
this collection of these samples.
The enclosed report should be self-explanatory; however, should you have any questions,
please do not hesitate to contact myself of Roberto Scheller at [phone] or
[e-mail].
Sincerely*,
W. Corey Basinger; Regional Supervisor
Water Quality .Regional Operations. Section
Division of Water Resources, NCDEQ .
', MSC 1617 `' (

Division of Water Resources
October 28, 2016
To: Corey Basinger
Water Quality Regional Operations, MRO
Through: Cindy A. Moore
Supervisor, Aquatic Toxicology Branch (ATB)
From: Carol Hollenkamp
Quality Assurance �__Lr, Aquatic Toxicology Branch(ATB)
Subject: Whole effluent toxicity test results
Norwood WWTP .
NPDES Permit # NCO021628/001
Stanly County
The aquatic toxicity test using composite samples of effluent discharged from the -Norwood WWTP has
been completed. Norwood WWTP has a permitted, effluent discharge of 0.75 million gallons per day
(MGD) entering the Rocky River (7Q10 of 42 CFS). Whole.effluent samples were collected on
September 13 and September 15 by Roberto Scheller and facility representative Tom Johnson for use in a
.chronic Ceriodaphnia dubia pass -fail toxicity test. This test passed Toxicity test information follows. .
Test. Type 3 -Brood Ceriodaphnia dubia chronic pass.fail
Test Concentrations 2'.7%
Fest Result Pass
Control Survival 83%
Control Mean Reproduction 24.4 neonates
`Test Treatment Survival 100%
Treatment Mean Reproduction 31.8 neonates
First. Sample pH, 6. SU
First Sample Conductivity 436 micromhos/cm
First Sample Total Residual Chlorine <0.10 mg/L
'Second Sample pH 8.01 SLT
Second. Sample Conductivity.. ' 446 micromhos/cm'
Second Sample Total Residual Chlorine <0.10 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: YAD14
cc: . 'Central Files
Wes. Bell (MRO)