NC0020834_Bioassay Compliance Evaluation Inspection_20200312

ROY COOPER'
Governor
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MICHAEL S. REGAN
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secrerary
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S. DANIEL SMITH
NORTH CAROLINA
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Environmental Quality
March 12, 2020
William Perkinson, Public Works Director
Town of Warrenton
PO Box 281
Warrenton, NC 27589-0281
Subject: Bioassay Compliance Evaluation Inspection
Whole Effluent Toxicity Test
Warrenton WWTP
NPDES Permit No: NCO020834:001
Warren County
Dear Mr. Perkinson:
Whole Effluent samples were collected from Warrenton WWTP on March 3 and 5, 2020 by Cheng
Zhang of Division of Water Resource (DWR), Raleigh Regional Office. These samples were for use
in a chronic Ceriodaphnia dubia pass -fail toxicity test, which was performed by the staff at DWR
Aquatic Toxicity Branch. This test passed for the toxicity inspection. Toxicity test information
follows.
Test Type 3-Brood Ceriodaphnia dubia chronic pass fail
Test Concentration 76 %
Test Result Pass (for Toxicity Inspection)
If you have any questions regarding the attached report or any of the findings, please contact Cheng
Zhang at: [phone] (or email: cheng.zhang(@ncdenr.gov).
Sincerely,
Scott Vinson, Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources
Attachments: Compliance Inspection Report
Cc: Central Files w."attachment (Laserfiche)
Raleigh Regional Office w'attachment
Forth Carolina Deportment of n:;ranrwntal Quality Division of 4V,',r CSoul'cci
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United Slates Environmental Protection Agency
Form Approved.
EPA Washington. D C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yrlmolday Inspection Type Inspector Fac Type
I 201 I
1 [i l 2 15 1 3 I NCO020834 I11 12 20/03/03 17 18 !-1 I Q I 19 I S LJ
LJ
21 g
Inspection Work Days Facility Self -Monitoring Evaluation Rating 81 CIA Reserved
67 70LJ 71 L72 L�J 73)1 74 71L I I I I I I I80
Section B Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry TimelDale
Permit Effective Date
POTW name and NPDES Dermit Number)
10:OOAM 20/03/03
16/06/01
Warrenton WWTP
Exit TimelDale
Permit Expiration Date
615 US Hwy 401 S
Warrenton NC 27589
10:20AM 20/03/03
19/10/31
Name(s) of Onsite Representative(s)Ttles(s)1Phone and Fax Numbers)
Other Facility Data
111
William Robert PerkinsonlORC/252-257-17761
Name, Address of Responsible Officia11TillelPhone and Fax Number
C. Wayne Mitchell,PO Box 281 Warrenton NC 27589028111252-257-17761 Contacted
Yes
Section C= Areas Evaluated During Inspection (Check only those areas evaluated)
Other
Section D. Summary of Finding/Comments (Attach additional sheets of narrative and checklists -as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Dale
Cheng Zhang DWRIRRO W01919-791-42001
CL b' crr 2/!Z1�241
Signature of Management 0 A Reviewer Agency/Office/Phone and Fax Numbers Dale
EPA Form 3550-3 (Rev 9-94) Previous editions are obsolete.
Page#
hoc

NPDES yrlmo/day Inspection Type
31 NCO020834 11 1 20/03/03 17 181„I
Section D: Summary of FindinglComments (Attach additional sheets of narrative and checklists as necessary)
Two composite samples were collected at Outfall 001 on March 3 and 5, 2020, which were used in a
ceriodaphnia chronic pass/fail test at DWR's Aquatic Toxicoly Branch. The test result was PASS.
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