NC0020834_Renewal (Application)_20190423

`t.StA1F4
3.:
ROY COOPER l `-
Governor
'
' t-i - -7'
MICHAEL S.REGAN •
Secrrrary ,.,,
LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
April 23, 2019
Robert Davie, Town Administrator
Town of Warrenton
PO Box 281
Warrenton, NC 27589-0281
Subject: Permit Renewal
Application No. NC0020834
Warrenton WWTP
Warren County
Dear Applicant:
The Water Quality Permitting Section acknowledges the April 23, 2019 receipt of your permit renewal application and
supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting
branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely,/
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
D E Q-j North Cara rs Department of Ery rarer rts Q.s t D vs. of Water Re*3ur5
'• Raegh Reg ora Off oeI an::Barrett Drve I Ra_gh,North :aro.ra27E09
�w.....�, 919-791-42DD

yaw 1.
NORTH CAROLINA
P.O. Box 281
Walter M. Gardner, Jr. —Mayor Warrenton, NC 27589-0281
Robert Davie—Town Administrator [phone] Fax [phone]
www.warrenton.nc.gov
April 12, 2019 RECEIVEDIDENR/DWR
NC Department of Environmental Quality
Division of Water Resources/NPDES Unit APR 2 3 2019
1617 Mail Service Center
Raleigh, NC 27699-1617 Water Ruources
Permitting Section
Subject: NPDES Permit Renewal
Town of Warrenton
NPDES Permit#NC0020834
Warren County
Dear Permitting Unit:
The Town of Warrenton is submitting the permit renewal package for NPDES Permit NC0020834. The permit expiration
date is October 31,2019. The permit application package consists of:
- Cover letter
- One original of Form 2A—NPDES Application for Permit Renewal
- Supplemental Application Information—Parts D& E
- Topographic Map
- Process Flow Schematic
- Effluent Pollutant Scan results
2"d Species Toxicity results
- Mercury Minimization Efforts Report
- One copy of Permit Renewal Package
The Town has the following comments regarding the NPDES permit:
- We are requesting the daily effluent monitoring of temperature be removed from the permit or that the
monitoring be reduced. There are no operational aspects that can influence the temperature of the discharge.
- The Facility continues to be a member of the Tar-Pamlico Basin Association.
- The permit has the units for Total Copper listed as"ug/L. The commercial laboratory submits the results as
mg/L. The laboratory results that are entered on the eDMRs are in units of ug/L, but the parameter code on
the eDMRs is in units of mg/L. Corrective action has been made.
- It is requested that Total Thallium monitoring be removed from the permit.
- It is requested that Total Phenolic Compounds be removed from the permit.
- We are requesting continued reduced monitoring as an"exceptionally performing facility"for BOD5,Ammonia
Nitrogen, Fecal Coliform and Total Suspended Solids (TSS). A review and analysis of testing results for the
past three years:
Percent of Monthly Average Limit
Parameter Most Restrictive 3-Year Average %of Limit
Monthly Limit
BOD5 9.0 mg/L 1.1 mg/L 12%
TSS 30.0 mg/L 2.2 mg/L 7%
Ammonia N 2.0 mg/L 0.01 mq/I 1%
Fecal Coliform 200/100 ml 21.3/100 ml 11%

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County VVVVTP, NC0020834 Renewal Tar-Pamlico
� M 1:�• w' a v1,,.:q-.,,.F " t 0. a �` kc teF w t w �a o,�-,, •y
2A
r
NPDES a s i M sIE .E 3 s a1 .
APPLICATION OVERVIEW
Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B. Additional Application Information for Applicants with a Design Flow>_0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through B.6.
C. Certification. All applicants must complete Part C(Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D(Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program(or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E(Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program(or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users(Sills)or receives RCRA or CERCLA wastes must complete Part F(Industrial User Discharges
and RCRA/CERCLA Wastes). Sills are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations(CFR)403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works(with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant;or
c. Is designated as an SIU by the control authority.
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G(Combined Sewer
Systems).
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION)
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
BASIC APPLICATION INFORMATION
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet.
A.1. Facility Information.
Facility Name Warren County WWTP
Mailing Address PO Box 281
Warrenton,NC 27589
Contact Person William R.Perkinson
Title Public Works Director/WWTP Superintendent
Telephone Number [phone]
Facility Address 738 US Highway 401 South
(not P.O.Box) Warrenton,NC 27589
A.2. Applicant Information. If the applicant is different from the above,provide the following:
Applicant Name Town of Warrenton
Mailing Address PO Box 281
Warrenton,NC 27589
Contact Person Robert Davie
Title Town Administrator
Telephone Number [phone]
Is the applicant the owner or operator(or both)of the treatment works?
® owner ® operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
® facility ❑ applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(include state-issued permits).
NPDES NC0020834 PSD
UIC Other WQCS00092
RCRA Other
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and,if known,provide information on the type of collection system(combined vs.separate)and its ownership(municipal,private,etc.).
Name Population Served Type of Collection System Ownership
Town of Warrenton 845 Separate Municipal
Town of Norlina 1063 Separate Municipal
Soul City 800 Separate County
Total population served 2,708
NPDES FORM 2A Additional Information
1

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
A.5. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes ® No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from(and eventually flows
through)Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant(i.e.,the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12th month of"this year"occurring no more than three months prior to this application submittal.
a. Design flow rate 2.0 mgd
Two Years Apo Last Year This Year
b. Annual average daily flow rate 0.46 0.41 0.43
c. Maximum daily flow rate 1.83 2.38 2.10
A.7. Collection System. Indicate the type(s)of collection system(s)used by the treatment plant. Check all that apply. Also estimate the percent
contribution(by miles)of each.
® Separate sanitary sewer 100
❑ Combined storm and sanitary sewer NA
A.8. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No
If yes,list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent 1
ii. Discharges of untreated or partially treated effluent NA
iii. Combined sewer overflow points NA
iv. Constructed emergency overflows(prior to the headworks) NA
v. Other NA
b. Does the treatment works discharge effluent to basins,ponds,or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? ❑ Yes ® No
If yes,provide the following for each surface impoundment:
Location: NA
Annual average daily volume discharge to surface impoundment(s) NA mgd
Is discharge ❑ continuous or ❑ intermittent?
c. Does the treatment works land-apply treated wastewater? ❑ Yes ® No
If yes,provide the following for each land application site:
Location: NA
Number of acres: NA
Annual average daily volume applied to site: NA mgd
Is land application ❑ continuous or ❑ intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works? ❑ Yes ® No
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
If yes,describe the mean(s)by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g.,tank truck,pipe).
If transport is by a party other than the applicant,provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number (
For each treatment works that receives this discharge,provide the following:
Name
Mailing Address
Contact Person
Title
Telephone Number (
If known,provide the NPDES permit number of the treatment works that receives this discharge
Provide the average daily flow rate from the treatment works into the receiving facility. mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8.through A.8.d above(e.g.,underground percolation,well injection): ❑ Yes ® No
If yes,provide the following for each disposal method:
Description of method(including location and size of site(s)if applicable):
Annual daily volume disposed by this method:
Is disposal through this method ❑ continuous or ❑ intermittent?
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County VVWTP, NC0020834 Renewal Tar-Pamlico
WASTEWATER DISCHARGES:
If you answered"Yes"to question A.8.a,complete questions A.9 through A.12 once for each outfall(including bypass points)through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered"No"to question
A.8.a,go to Part B,"Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 001
b. Location Warrenton 27589
(City or town,if applicable) (Zip Code)
Warren NC
(County) (State)
36°22'47" 78°10'07"
(Latitude) (Longitude)
c. Distance from shore(if applicable) NA ft.
d. Depth below surface(if applicable) NA ft.
e. Average daily flow rate NA mgd
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ® No (go to A.9.g.)
If yes,provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is outfall equipped with a diffuser? ❑ Yes ® No
A.10. Description of Receiving Waters.
a. Name of receiving water Fishing Creek
b. Name of watershed(if known)
United States Soil Conservation Service 14-digit watershed code(if known): Unknown
c. Name of State Management/River Basin(if known):Tar-Pamlico
United States Geological Survey 8-digit hydrologic cataloging unit code(if known): 03020102
d. Critical low flow of receiving stream(if applicable)
acute cfs chronic cfs
e. Total hardness of receiving stream at critical low flow(if applicable): mg/L of CaCO3
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
❑ Primary El Secondary
El Advanced ❑ Other. Describe:
b. Indicate the following removal rates(as applicable):
Design BOD5 removal or Design CBOD5 removal 90 %
Design SS removal 90 ok
Design P removal NA
Design N removal NA %
Other %
c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season,please describe:
Chlorination
If disinfection is by chlorination is dechlorination used for this outfall? ® Yes ❑ No
Does the treatment plant have post aeration? El Yes ❑ No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition,this data must comply with QA/QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum,effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number: 001
MAXIMUM DAILY VALUE AVERAGE DAILY VALUE
PARAMETER
Value Units Value Units Number of Samples
Or
pH(Minimum) 6.1 s.u.
pH(Maximum) 7.8 s.u.
Flow Rate 2.10 MGD 0.43 MGD 365
Temperature(Winter) 15.4 °C 10.3 °C 24
Temperature(Summer) 27.4 °C 24.5 °C 72
*For pH please report a minimum and a maximum daily value
MAXIMUM DAILY AVERAGE DAILY DISCHARGE
POLLUTANT DISCHARGE ANALYTICAL ML/MDL
Number of METHOD
Conc. Units Conc. Units Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN BOD5 9.4 mg/L 1.1 mg/L 156 SM 5210B 2.0
DEMAND(Report one) CBOD5 NA NA NA NA NA NA NA
FECAL COLIFORM 600 Col/100 ml 7 Co '00 156 SM9222D 1
TOTAL SUSPENDED SOLIDS(TSS) 14.0 mg/L 1.5 mg/L 156 SM 2540(D) 2.5
END OF PART A.
REFER TO THE APPLICATION OVERVIEW(PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
NPDES FORM 2A Additional Information

•
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
BASIC APPLICATION INFORMATION
PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD(100,000 gallons per day).
All applicants with a design flow rate>_0.1 mgd must answer questions B.1 through B.6. All others go to Part C(Certification).
B.1. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
3,000 gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
A major rehabilitation of the sewer collection system was completed in 2014. Current projects: 3000 feet replaced of fC
Sewer line to be replaced, 1500 feet to be CIP, Rehab 54 manholes, and replace 18 manholes
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant,including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping,if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells,springs,other surface water bodies,and drinking water wells that are: 1)within'A mile of the property boundaries of the treatment
works,and 2)listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored,treated,or disposed.
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act(RCRA)by truck,rail,
or special pipe,show on the map where the hazardous waste enters the treatment works and where it is treated,stored,and/or disposed.
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant,including all bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units,including disinfection(e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects(related to wastewater treatment and effluent quality)of the treatment works the responsibility of a
contractor? ❑ Yes ® No
If yes,list the name,address,telephone number,and status of each contractor and describe the contractor's responsibilities(attach additional
pages if necessary).
Name:
Mailing Address:
Telephone Number: ( )
Responsibilities of Contractor:
B.5. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment,effluent quality,or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements,submit separate responses to question B.5
for each. (If none,go to question B.6.)
a. List the outfall number(assigned in question A.9)for each outfall that is covered by this implementation schedule.
NA
b. Indicate whether the planned improvements or implementation schedule are required by local,State,or Federal agencies.
❑ Yes ❑ No
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
c. If the answer to B.5.b is"Yes,"briefly describe,including new maximum daily inflow rate(if applicable).
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below,as
applicable. For improvements planned independently of local,State,or Federal agencies,indicate planned or actual completion dates,as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DD/YYYY MM/DD/YYYY
-Begin Construction / / / /
-End Construction / / / /
-Begin Discharge / / / /
-Attain Operational Level / / / /
I/ requirements been obtained? Yes 0 No
e. Have appropriate permits/clearances concerning other Federal/State eq 0
Describe briefly:
B.6. EFFLUENT TESTING DATA(GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information
on combine sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition,this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on-half years old.
Outfall Number 001
MAXIMUM DAILY 1 AVERAGE DAILY DISCHARGE
DISCHARGE ANALYTICAL
POLLUTANT H— MUMDL
Conc. Units Conc. Units Number of
METHOD
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA(as N) 0.70 mg/L 0.02 mg/L 156 EPA 350.1 0.1
CHLORINE(TOTAL <20 ug/L <20 ug/L 156 SM 4500(CL2)G 10
RESIDUAL,TRC)
DISSOLVED OXYGEN 14.7 mg/L 9.4 mg/L 156 SM 4500(0)C. 1
TOTAL KJELDAHL 7.10 mg/L 0.26 mg/L 52 EPA 351.1 0.2
NITROGEN(TKN)
NITRATE PLUS NITRITE 41.7 mg/L 26.6 mg/L 52 EPA 353.2 0.1
NITROGEN
OIL and GREASE <5 mg/L <5 mg/L 3 EPA 1664 B 5
PHOSPHORUS(Total) 3.4 mg/L 2.0 mg/L 52 EPA 200.7 0.020
TOTAL DISSOLVED SOLIDS 596 mg/L 330 mg/L 3 SM 2540 C. 10
(TDS)
OTHER Total Nitrogen 41.7 mg/L 27.0 mg/L 52 Calculated NA
END OF PART B.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
BASIC APPLICATION INFORMATION
PART C. CERTIFICATION
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this
certification. All applicants must complete all applicable sections of Form 2A,as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement,applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
El Basic Application Information packet Supplemental Application Information packet:
® Part D(Expanded Effluent Testing Data)
E) Part E(Toxicity Testing: Biomonitoring Data)
❑ Part F(Industrial User Discharges and RCRA/CERCLA Wastes)
❑ Part G(Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who
manage the system or those persons directly responsible for gathering the information,the information is,to the best of my knowledge and belief,true,
accurate,and complete. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment
for knowing violations.
Name and official title Robert Davi Town Administrator
Signature �
Telephone number (252)2577--1122
Date signed
Upon request of the permitting authority,you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
NPDES FORM 2A Additional Information

•
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
SUPPLEMENTAL APPLICATION INFORMATION
PART D. EXPANDED EFFLUENT TESTING DATA
Refer to the directions on the cover page to determine whether this section applies to the treatment works.
Effluent Testing: 1.0 mgd and Pretreatment Works. If the treatment works has a design flow greater than or equal to 1.0 mgd or it has(or is required
to have)a pretreatment program,or is otherwise required by the permitting authority to provide the data,then provide effluent testing data for the following
pollutants. Provide the indicated effluent testing information and any other information required by the permitting authority for each outfall through which
effluent is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected
through analyses conducted using 40 CFR Part 136 methods. In addition,these data must comply with QA/QC requirements of 40 CFR Part 136 and
other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. Indicate in the blank rows provided below
any data you may have on pollutants not specifically listed in this form. At a minimum,effluent testing data must be based on at least three pollutant
scans and must be no more than four and one-half years old.
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE
` ANALYTICAL
POLLUTANT Number MUNIDL
Conc. Units Mass Units Conc. Units Mass Units of METHOD
Samples
METALS(TOTAL RECOVERABLE),CYANIDE,PHENOLS,AND HARDNESS.
ANTIMONY ND mg/L ND mg/L 3 EPA 200.7 0.025
ARSENIC ND mg/L ND mg/L 3 EPA 200.7 0.010
BERYLLIUM ND mg/L ND mg/L 3 EPA 200.7 0.005
CADMIUM ND mg/L ND mg/L 3 EPA 200.7 0.002
CHROMIUM ND mg/L ND mg/L 3 EPA 200.7 0.005
COPPER 0.0029 mg/L 0.013 mg/L 3 EPA 200.7 0.002
LEAD ND mg/L ND mg/L 3 EPA 200.7 0.010
MERCURY 3.54 ng/L 2.40 ng/L 3 EPA 1631 1
NICKEL ND mg/L ND mg/L 3 EPA 200.7 0.010
SELENIUM ND mg/L ND mg/L 3 EPA 200.7 0.010
SILVER ND mg/L ND mg/L 3 EPA 200.7 0.005
THALLIUM ND mg/L ND mg/L 3 EPA 200.7 0.020
ZINC 0.074 mg/L 0.065 mg/L 3 EPA 200.7 0.010
CYANIDE ND mg/L ND mg/L 3 EPA 335.4 0.005
TOTAL PHENOLIC 0.224 mg/L 0.080 mg/L 3 EPA 420.1 0.010
COMPOUNDS
HARDNESS(as CaCO3) 134 mg/L 55 mg/L 3 SM 2340C 1
Use this space(or a separate sheet)to provide information on other metals requested by the permit writer
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States)
MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE
POLLUTANT Number ANALYTICAL MUMDL
Conc. Units Mass Units Conc. Units Mass Units of METHOD
I I Samples I
VOLATILE ORGANIC COMPOUNDS
ACROLEIN ND ug/L ND ug/L 3 EPA 624 50.0
ACRYLONITRILE ND ug/L ND ug/L 3 EPA 624 10.0
BENZENE ND ug/L ND ug/L 3 EPA 624 1.00
BROMOFORM ND ug/L ND ug/L 3 EPA 624 1.00
CARBON ND ug/L ND ug/L 3 EPA 624 1.00
TETRACHLORIDE
CHLOROBENZENE ND ug/L ND ug/L 3 EPA 624 1.00
CHLORODIBROMO- ND ug/L ND ug/L 3 EPA 624 1.00
METHANE
CHLOROETHANE ND ug/L ND ug/L 3 EPA 624 5.00
2-CHLOROETHYLVINYL ND ug/L ND ug/L 3 EPA 624 5.00
ETHER
CHLOROFORM 4.19 ug/L 3.26 ug/L 3 EPA 624 1.00
DICHLOROBROMO- ND ug/L ND ug/L 3 EPA 624 1.00
METHANE
1,1-DICHLOROETHANE ND ug/L ND ug/L 3 EPA 624 1.00
1,2-DICHLOROETHANE ND ug/L ND ug/L 3 EPA 624 1.00
TRANS-1,2-DICHLORO- ND ug/L ND ug/L 3 EPA 624 1.00
ETHYLENE
1,1-DICHLORO- ND ug/L ND ug/L 3 EPA 624 1.00
ETHYLENE
1,2-DICHLOROPROPANE ND ug/L ND ug/L 3 EPA 624 1.00
1,3-DICHLORO- ND ug/L ND ug/L 3 EPA 624 1.00
PROPYLENE
ETHYLBENZENE ND ug/L ND ug/L 3 EPA 624 1.00
METHYL BROMIDE ND ug/L ND ug/L 3 EPA 624 1.00
METHYL CHLORIDE ND ug/L ND ug/L 3 EPA 624 5.00
METHYLENE CHLORIDE ND ug/L ND ug/L 3 EPA 624 5.00
1,1,2,2-TETRA- ND ug/L ND ug/L 3 EPA 624 1.00
CHLOROETHANE
TETRACHLORO- ND ug/L ND ug/L 3 EPA 624 1.00
ETHYLENE
TOLUENE ND ug/L ND ug/L 3 EPA 624 1.00
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
Outfall number 001 (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE
POLLUTANT Number ANALYTICAL ML/MDL
Conc. Units Mass Units Conc. Units Mass Units of METHOD
Samples
1,1,1 ND ug/L ND ug/L 3 EPA 624 1.00
TRICHLOROETHANE
1,1,2 ND ug/L ND ug/L 3 EPA 624 1.00
TRICHLOROETHANE
TRICHLOROETHYLENE ND ug/L ND ug/L 3 EPA 624 1.00
VINYL CHLORIDE ND ug/L ND ug/L 3 EPA 624 5.00
Use this space(or a separate sheet)to provide information on other volatile organic compounds requested by the permit writer
ACID-EXTRACTABLE COMPOUNDS
P-CHLORO-M-CRESOL ND ug/L ND ug/L 3 EPA 625 10
2-CHLOROPHENOL ND ug!L ND ug/L 3 EPA 625 10
2,4-DICHLOROPHENOL ND ug/L ND ug/L 3 EPA 625 10
2,4-DIMETHYLPHENOL ND ug/L ND ug/L 3 EPA 625 10
4,6-DINITRO-O-CRESOL ND ug/L ND ug/L 3 EPA 625 50
2,4-DINITROPHENOL ND ug/L ND ug/L 3 EPA 625 10
2-NITROPHENOL ND ug/L ND ug/L 3 EPA 625 10
4-NITROPHENOL ND ug/L ND ug!L 3 EPA 625 50
PENTACHLOROPHENOL ND ug/L ND ug/L 3 EPA 625 50
PHENOL ND ug/L ND ug/L 3 EPA 625 10
2,4,6 ND ug/L ND ug/L 3 EPA 625 10
TRICHLOROPHENOL
Use this space(or a separate sheet)to provide information on other acid-extractable compounds requested by the permit writer
BASE-NEUTRAL COMPOUNDS
ACENAPHTHENE ND ug/L ND ug/L 3 EPA 625 10
ACENAPHTHYLENE ND ug/L ND ug/L 3 EPA 625 10
ANTHRACENE ND ug!L ND ug/L 3 EPA 625 10
BENZIDINE ND ug/L ND ug/L 3 EPA 625 50
BENZO(A)ANTHRACENE ND ug/L ND ug!L 3 EPA 625 10
BENZO(A)PYRENE ND ug/L ND ug/L 3 EPA 625 10
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE
POLLUTANT I Number ANALYTICAL MLJMDL
Conc. , Units Mass Units Conc. Units Mass Units of METHOD
Samples
3,4 BENZO- ND ug/L ND ug/L 3 EPA 625 10
FLUORANTHENE
BENZO(GHI)PERYLENE ND ug/L ND ug/L 3 EPA 625 10
BENZO(K) ND ug/L ND ug/L 3 EPA 625 10
FLUORANTHENE
BIS(2-CHLOROETHOXY) ND ug/L ND ug/L 3 EPA 625 10
METHANE
BIS(2-CHLOROETHYL)- ND ug/L ND ug/L 3 EPA 625 10
ETHER
BIS(2-CHLOROISO-
ND ug/L ND ug/L 3 EPA 625 10
1 PROPYL)ETHER
BIS(2-ETHYLHEXYL) ND ug/L ND ug/L 3 EPA 625 10
PHTHALATE
4-BROMOPHENYL ND ug/L ND ug/L 3 EPA 625 10
PHENYL ETHER
BUTYL BENZYL ND ug/L ND ug/L 3 EPA 625 10
PHTHALATE
2-CH ND ug/L ND ug/L 3 EPA 625 10
NAPHTHALENE
4-CHLORPHENYL ND ug/L ND ug/L 3 EPA 625 10
PHENYL ETHER
CHRYSENE ND ug/L ND ug/L 3 EPA 625 10
DI-N-BUTYL PHTHALATE ND ug/L ND ug/L 3 EPA 625 10
DI-N-OCTYL PHTHALATE ND ug/L ND ug/L 3 EPA 625 10
DIBENZO(A,H) ND ug/L ND ug/L 3 EPA 625 10
ANTHRACENE
1,2-DICHLOROBENZENE ND ug/L ND uglL 3 EPA625 10
1,3-DICHLOROBENZENE ND ug/L ND ug/L 3 EPA 625 10
1,4-DICHLOROBENZENE ND ug/L ND ug/L 3 EPA 625 10
3,3-DICHLORO- ND ug/L ND ug/L 3 EPA 625 50
BENZIDINE
DIETHYL PHTHALATE ND ug/L ND ug/L 3 EPA 625 10
DIMETHYL PHTHALATE ND ug/L ND ug/L 3 EPA 625 10
2,4-DINITROTOLUENE ND ug/L ND ug/L 3 EPA 625 10
2,6-DINITROTOLUENE ND ug/L ND ug/L 3 EPA 625 10
1,2-DIPH NYL- ND ug/L ND ug/L 3 EPA 625 10
HYDRAZINE
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Renewal
Outfall number: 001 (Complete once for each(Nutfall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE
POLLUTANT Number ANALYTICAL ML/MDL
Conc. Units Mass Units Conc. [ Units Mass Units of METHOD
Samples
FLUORANTHENE ND ug/L ND ug/L 3 EPA 625 10
FLUORENE ND ug/L ND ug/L 3 EPA 625 10
HEXACHLOROBENZENE ND ug/L ND ug/L 3 EPA 625 10
HEXACHLORO- ND ug/L ND ug/L 3 EPA 625 10
BUTADIENE
HEXACHLOROCYCLO- ND ug/L ND ug/L 3 EPA 625 50
PENTADIENE
HEXACHLOROETHANE ND ug/L ND ug/L 3 EPA 625 10
INDENO(1,2,3-CD) ND ug/L ND ug/L 3 EPA 625 10
PYRENE
ISOPHORONE ND ug/L ND ug/L 3 EPA 625 10
NAPHTHALENE ND ug/L ND ug/L 3 EPA 625 10
NITROBENZENE ND ug/L ND ug/L 3 EPA 625 10
N-NITROSODI-N- ND ug/L ND ug/L 3 EPA 625 10
PROPYLAMINE
N-NITROSODI- ND ug/L ND ug/L 3 EPA 625 10
METHYLAMINE
N-NITROSODI- ND ug/L ND ug/L 3 EPA 625 10
PHENYLAMINE
PHENANTHRENE ND ug/L ND ug/L 3 EPA 625 10
PYRENE ND ug/L ND ug/L 3 EPA 625 10
1,2,4 ND ug/L ND ug/L 3 EPA 625 10
TRICHLOROBENZENE
Use this space(or a separate sheet)to provide information on other base-neutral compounds requested by the permit writer
Use this space(or a separate sheet)to provide information on other pollutants(e.g.,pesticides)requested by the permit writer
-.., _ .,_- '. ''' '''- END OF PART D.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
SUPPLEMENTAL APPLICATION INFORMATION
PART E. TOXICITY TESTING DATA
POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the
facility's discharge points: 1)POTWs with a design flow rate greater than or equal to 1.0 mgd;2)POTWs with a pretreatment program(or those that are
required to have one under 40 CFR Part 403);or 3)POTWs required by the permitting authority to submit data for these parameters.
• At a minimum,these results must include quarterly testing for a 12-month period within the past 1 year using multiple species(minimum of two
species),or the results from four tests performed at least annually in the four and one-half years prior to the application,provided the results
show no appreciable toxicity,and testing for acute and/or chronic toxicity,depending on the range of receiving water dilution. Do not include
information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition,this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC
requirements for standard methods for analytes not addressed by 40 CFR Part 136.
• In addition,submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test
conducted during the past four and one-half years revealed toxicity,provide any information on the cause of the toxicity or any results of a
toxicity reduction evaluation,if one was conducted.
• If you have already submitted any of the information requested in Part E,you need not submit it again. Rather,provide the information
requested in question E.4 for previously submitted information. If EPA methods were not used,report the reasons for using alternate methods.
If test summaries are available that contain all of the information requested below,they may be submitted in place of Part E.
If no biomonitoring data is required,do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to
complete.
E.1. Required Tests.
Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years.
El chronic 18 ❑ acute
E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half years. Allow
one column per test(where each species constitutes a test). Copy this page if more than three tests are being reported.
Test number: Test number: Test number:
a. Test information.
Test Species&test method number
Age at initiation of test
Outfall number
Dates sample collected
Date test started
Duration
b. Give toxicity test methods followed.
Manual title
Edition number and year of publication
Page number(s)
c. Give the sample collection method(s)used. For multiple grab samples,indicate the number of grab samples used.
24-Hour composite
Grab
d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each.
Before disinfection
After disinfection
After dechlorination
1
NPDES FORM 2A Additional Information

1 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
Test number: Test number: Test number:
e. Describe the point in the treatment process at which the sample was collected.
Sample was collected:
f. For each test,include whether the test was intended to assess chronic toxicity,acute toxicity,or both
Chronic toxicity
Acute toxicity
g. Provide the type of test performed.
Static
Static-renewal
Flow-through
h. Source of dilution water. If laboratory water,specify type;if receiving water,specify source.
Laboratory water
Receiving water
i. Type of dilution water. If salt water,specify"natural"or type of artificial sea salts or brine used.
Fresh water
Salt water
j. Give the percentage effluent used for all concentrations in the test series.
k. Parameters measured during the test. (State whether parameter meets test method specifications)
pH
Salinity
Temperature
Ammonia
Dissolved oxygen
I. Test Results.
Acute:
Percent survival in 100%
effluent
LC50
95%C.I. 0/0
Control percent survival
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Warren County WWTP, NC0020834 Renewal Tar-Pamlico
Chronic:
NOEC
IC25 OA
Control percent survival
Other(describe)
m. Quality Control/Quality Assurance.
Is reference toxicant data available?
Was reference toxicant test within
acceptable bounds?
What date was reference toxicant test
run(MM/DD/YYYY)?
Other(describe)
E.3. Toxicity Reduction Evaluation. Is the treatment works involved in a Toxicity Reduction Evaluation?
❑ Yes ® No If yes,describe:
E.4. Summary of Submitted Biomonitoring Test Information. If you have submitted biomonitoring test information,or information regarding the
cause of toxicity,within the past four and one-half years,provide the dates the information was submitted to the permitting authority and a summary
of the results.
Date submitted:Summary attached. Results have been submitted each year in the months of:March,June,September, December
Summary of results: (see instructions)
All biomonitoring have been a"pass". Four 2nd species (Fathead Minnow) has been completed with results of>100
END OF PART E.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
NPDES FORM 2A Additional Information

r
,, n wecc.0 0,: .f ;.
t r i 1 !, i _.._ \•" falnew 1.' Tank... 4 r '.,••- •' / s•V^•i 1
„....--,-.._.—:. 7 `• .
1 }'! J � {! ++ ey '. •
i \� .4'4 rr7. •' :1• i r,�", r• �..
f „
f . 'ram CC A^ i ; -- �- i . •
• ,` r _ as • pI �, j
• ' �° " / ' a = ' " .h, l ' awe i� m i (' _ l I r it i r- �. ,p' /.� • '^�/.• •11'W T • :e i f`� ` 1.'
,11 f ! r ^ �� \.
sti, — JCiarf IV ��rr. '�6 ,-.4
�6
lI
re• Se -
•
rd
,�f� At,,,,,,l�',,, Outfall 001 , `',�-`.I= ) �. �fJ C
'/ •
! ,"w�} t_. '-1 ti`f� •i ce/ ( ' ;19 �,� ; I eir,i,' \.� 0 kl,
y �`tlj t � f S (r •i \ i. r f�'�'L�{ \t�` �/ '�C % JJ ? /.., ) 0,/,),,)..;1..'1 : ! ,� vI S'''-',•.. /\ � I �^0r ('.. 11/ .`-�"'i.� ^iJ ra1.7, , fr
_\ (\::,,"\ .-II•4.,i 4‘A
'.. :;;\-.. t 1, c-Th..„;•—.,1-‘1 i 1 ,-1-‘i S i / \---,44, -,- "----,,-1(J(/'-'\\-TN ',(•••?. ''', "...0;i i 4---,s....7-,,F,\-- /.../...- .44.- .., "'''"-NN ' : 11'- '"1
! I,,j s°1 I \ ' I./1 �1\..C'''. / .\i U f f' _t�� {r fit: 9.
\ 4ifif-r-( 1
--, )/lr ' - ..' ''' . ( i\ \ ' ‘} k-1 • ',- -1\4 ,.-ri--, ,'\ 'i \ L.:
9; t.N..I-N-' - - .1 1 h ' • " ' fi•I')-1 %. ; ;..- •,
• !\ 1 - k. i / c's ) ,. - 1.17" .. i,.,, .\\A ..,. / 14:4
, , ,.." , ,,,,::47 0 /4
I ��{ �, + 4L' / ,t,-7 • " �V re , 11 '1• t/,tki . -1 S , , ',..__ 1 i ;), ; :I\ X `•::. �,,t,;t ' '•
tAN LI /‘ ‘,3-7 I) C\ ' !' \\(;) j) \ L. . /.. . d•i. '` , ••rA 1 "r
\ \ ,i ....,,,\,,_; ,...„..(;,...„....1,\,,,, ....y -.-N.:,1 3\4:\ii:,...,..44,-1.:2 ...::.„,.i\ ,-s7j..."-;.. ''.._.‘'..-"
Warren County WWTP - NC0020834
• Facility
•
Location
1 USGS Quad Name: Warrenton Lat.: 36°22'47"
!Receiving Stream: Fishing Creek Long.: 78°10'07"
•€Stream Class: C NSW 8-Digit HUC: h Not to Scale
Subbasin: •Tar Pamlico-030304 03020102

CHLORINE FEED AND/
y'/ fti [ HANDLING SYSTEM CLARIFIERS.
rii ±1
• • --f 7 f IN 1C :lz . - 411---
- _
• CHLORINE 1 � , �� - _ '
CONTACAT _—_ _— • ; —►
TANKg� t • . 1 ♦ ._-� SLUDGE _op ECIR �'40 --i__ .� -
Its.T E R I T I A R Y,----'"",
♦ FILTERS SLUDGEli. --4 .
RECIRCULATION -
• AND. wASTE • I ! �-
PUMP STATION 1 1 '
� . POST AERATION 1
OXIDATION DITCHES
- WASTE 1 — l _ __ _ .
- +SLUDGE LIME FEED SYSTEM.
- WAS , FILTER
TEWATER BACKWASH I - -
PUtdP
AEROBIC
WASTE 1 -
STATION k� -
DIGESTER
EFFLUENT •
- '1 -
PARSHALI
. - fLUME _.. - J11' _ _
•
• 0 �11 -
•
. - •• - `
FISHING CREEK DECANT DIGESTED -
I'" - SLUDGE .
• MACHANICAL 1. BED UNDERDRAINAGE •
BAR SCREEN - - _ .
• PUMP --- —r-----1— — i- --
' TOVAI. .L-J r-- l STATION
REIM
FACILITY VACUUM ----- - SLUDGE DRYING
SLUDGE - BEDS ICONVEN-TlONA
♦ DRYING BEDS , -
- INFLUENT . '' S
.
•
• EXHIBIT- I-
' • SCHEMATIC FLOW PATTERN OF• WASTEWATER
I AND SLUDGE • AT WARREN COUNTY WASTEWATER TREATMENT PLANT T.

Meritech, Inc.
Environmental Laboratory.
0
Laboratory Certification No.165 rr A\
Alf
Contact: Linda Bobbitt Report Date: 9/30/2015
CIient: Warrenton,Town of WWTP NPDES#: NC0020834
738 US Hwy 401 South
Warrenton,NC 27589 Date Sample Rcvd: 9/17/2015
Meritech Work Order# 091715147 Sample: Effluent Composite 9/16-17/15
Parameters Results Analysis Date Reporting Limit Method
Total Dissolved Solids 596 mg/L 9/17/15 10.0 mg/L SM 2540C
Ammonia,Nitrogen <0.1 mg/L 9/22/15 0.1 rng/L EPA 350.1
TKN <0.20 mg/L 9/23/15 0.20 mg/L EPA 351.1
Nitrate/Nitrite,Nitrogen 33.5 mg/L 9/18/15 0.10 mg/L EPA 353.2
Nitrogen,total 33.5 mg/L 9/23/15 0.20 mg/L EPA 353.2
Antimony,total <0.025 mg/L 9/22/15 0.025 mg/L EPA 200.7
Arsenic,total <0.010 mg/L 9/22/15 0.010 mg/L EPA 200.7
Beryllium,total <0.005 mg/L 9/22/15 0.005 mg/L EPA 200.7
Cadmium,total <0.002 mg/L 9/22/15 0.002 mg/L EPA 200.7
Chromium,total <0.005 mg/L 9/22/15 0.005 mg/L EPA 200.7
Copper,total 0.017 mg/L 9/22/15 0.002 mg/L EPA 200.7
Lead,total <0.010 mg/L 9/22/15 0.010 mg/L EPA 200.7
Nickel,total <0.010 mg/L 9/22/15 0.010 mg/L EPA 200.7
Phosphorus,total 2.63 mg/L 9/22/15 0.020 mg/L EPA 200#
Selenium,total <0.010 mg/L 9/22/15 0.010 mg/L EPA 200.7
Silver,total <0.005 mg/L 9/22/15 0.005 mg/L EPA 200.7
Thallium,total <0.020 mg/L 9/22/15 0.020 mg/L EPA 200.7
Zinc,total 0.073 rng/L 9/22/15 0.010 mg/L EPA 200.7
Hardness(titration) 136 mg/L 9/24/15 1 mg/L SM 2340C
EPA 625 BNA Attached 9/26/15 - EPA 625
Meritech Work Order# 091715148 Sample: Effluent Grab 9/17/15
Parameters Results Analysis Date Reporting Limit Method
Cyanide,total <0.005 mg/L 9/24/15 0.005 mg/L EPA 335.4
Oil&Grease(HEM) <5 mg/L 9/28/15 5.0 mg/L EPA 1664A
Phenols,total 0.224 mg/L 9/18/15 10 ug/L EPA 420.1
EPA 624+AA Attached 9/21/15 - - 624
Total Residual Chlorine 0.15 mg/L 9/17/15
Dissolved Oxygen 6.7 mg/L 9/17/15
I hereby certify that I have reviewed and approve these data. , 4....&2
Laboratory Representative
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]

MERITECH,: y
INC.
.,...
,-
' Environmental Laboratories
1
Laboratory Certificate#165
Client: Warrenton Meritech ID#: 091715147
Project: 625 Analysis: 09/26/15
Client Sample ID: Effluent Extraction: 09/21/15
Sample Collection: 09/17/15 Analyst: PM
Dilution Factor: 1
EPA 625 SEMIVOLATILE ORGANICS
Parameter Result Parameter Result
Acenaphthene <10 ugfL Fluoranthene <10 ug/L
Acenaphthylene <10 ug/L Fluorene <10 ug/L
Anthracene <10 ug/L Hexachlorobenzene <10 ug/L
Benzidine <50 ug/L Hexachlorobutadiene <10 ug/L
Benzo(a)anthracene <10 ug/L Hexachlorocyclopentadiene <50 ug/L
Benzo(a)pyrene <10 ug/L Hexachloroethane <10 ug/L
3,4-Benzofluoranthene <10 ug/L Indeno(1,2,3-cd)pyrene <10 ug/L
Benzo(k)fluoranthene <10 ug/L Isophorone <10 ug/L
Benzo(g,h,i)perylene <10 ug/L 2-Methylnaphthalene <10 ug/L
Benzyl butyl phthalate <10 ug/L Naphthalene <10 ug/L
Bis(2-chloroethoxy)methane <10 ug/L Nitrobenzene <10 ug/L
Bis(2-chloroethyl)ether <10 ug/L N-Nitrosodimethylamine <10 ug/L
Bis(2-chloroisopropyl)ether <10 ug/L N-Nitrosodi-n-propylamine <10 ug/L
Bis(2-ethylhexyl)phthalate < 10 ug/L N-Nitrosodiphenylamine <10 ug/L
4-Bromophenyl phenyl ether <10 ugfL Phenanthrene <10 ug/L
2-Chloronaphthalene <10 ug/L Pyrene <10 ug/L
4-Chlorophenyl phenyl ether <10 ug/L I,2,4-Trichlorobenzene <10 ug/L
Chrysene <10 ugtL
Dibenzo(a,h)anthracene <10 ug/L p-Chloro-m-cresol <10 ug/L
1 2-Dichlorobenzene <10 ug/L 2-Chlorophenol <10 ug/L
1,3-Dichlorobenzene <10 ug/L 2,4-Dichlorophenol <10 ugfL
1,4-Dichlorobenzene <10 ug/L 2,4-Dimethylphenol <10 ug/L
3,3'-Dichlorobenzidine <50 ug/L 2,4-Dinitrophenol <50 ug/L'
Diethyl phthalate <10 ug/L 4,6-Dinitro-o-cresol <50 ug/L
Dimethyl phthalate <10 ug/L 2-Nitrophenol <10 ug/L
Di-n-butyl phthalate <10 ug/L 4-Nitrophenol <50 ug/L
2,4-Dinitrotoluene <10 ug/L Pentachlorophenol <50 ug/L 1
2,6-Dinitrotoluene <10 ug/L Phenol <10 ug/L
Di-n-octyl phthalate <10 ug/L 2,4,6-Trichlorophenol <10 ug/L
1,2-Diphenylhydrazine <10 ug/L
I hereby certify that I have reviewed and approve these data. f< . 'ij'2'
Laboratory Representative
642 Tamco Road* Reidsville, NC 27320
[phone] Ph* [phone] Fax 1

MERI TECH INC.
Environmental Laboratories
Laboratory Certification#165
Client: Warrenton Meritech ID#: 091715148
Project: 624 Analysis: 09/21/15
Client Sample ID: Effluent Analyst: VWV
Sample CoUection: 09/17/15 Dilution Factor: 1
Report Date: 09/25/15
EPA 624 VOLATILE ORGANICS
Parameter Result
Benzene < 1.00 ug/L
Dichlorobromomethane < 1.00 ug/L
Bromoform <1.00 ug/L
Methyl Bromide <5.00 ug/L
Carbon Tetrachloride <1.00 ug/L
Chlorobenzene <1.00 ug/L
Chloroethane <5.00 ug/L
2-Chloroethyl vinyl ether <5.00 ug/L
Chloroform 2.71 ug/L
Methyl Chloride <5.00 ug/L
Chlorodibromomethane < 1.00 ug/L
1,2-Dibronloethane < 1.00 ug/L
1,1-Dichioroethane < 1.00 ug/L
1,2-Dichloroethane < 1.00 ug/L
1,4-Dichlorobenzene < 1.00 ug/L
1,2-Dichlorobenzene <1.00 ug/L
1,3-Dichlorobenzene <1..00 ug/L
1,1-Dichloroethylene < 1.00 ug/L
trans-1,2-Dichloroethylene < 1.00 ug/L
1,2-Dichloropropane < 1.00 ug/L
cis-1,3-Dichloropropylene < 1.00 ug/L
trans-1,3-Dichloropropylene < 1.00 ug/L
Ethyl benzene <1.00 ug/L
Methylene chloride < 1.00 ug/L
1,1,2,2-Tetrachloroethane < 1..00 ug/L
Tetrachloroethylene < 1.00 ug/L
Toluene < 1.00 ug/L
1,1,1-Trichloroethane <1.00 ug/L
1,1,2-Trichloroethane <1.00 ug/L
Trichloroethylene < 1.00 ug/L
Trichlorofluoromethane <1.00 ug/L
Vinyl chloride <5.00 ug/L
Additional Compounds
Acrolein <50.0 ug/L
Acrylonitrile < 10.0 ug/L
I hereby certify that I have reviewed and approve these data.
Laboratory Representative
642 Tamco Road* Reidsville, NC 27320
[phone] Ph * [phone] Fax

RECEIVED SEP 28 1015
MERITECH, INCA
ENVIRONMENTAL LABORATORIES
Laboratory Certification No. 165
Client: Warrenton,Town of WWTP Date Sampled 09/17/15
738 US Hwy 401 South Digested 09/18/15
Warrenton,NC 27589 Analysis 09/22/15
Attention Bill Perkinson Analyst: SMc
NPDES#
EPA 1631 Low Level Mercury Analysis
Meritech ID# Sample ID Result Reporting Limit
MBLK1013E Method Blank <0.5 ng/L 0.5 ng/L
M09181515 Field Blank < 1.0 ng/L 1.0 ng/L
M09181516 Effluent 2.32 ng/L 1.0 ng/L
I hereby certify that I have reviewed and approve these data.
Laboratory epresentative
642 Tamco Rd - PO Box 27 - Reidsville, NC 27320
[phone] Ph - [phone] Fax
E-Mail: [e-mail]

•
Meritech, Inc.
Environmental Laboratory
Laboratory Certification No.165
ASO ,\'‘ -\/c
Contact: Linda Bobbitt "5 Report Date: 3/28/2017
Client: Warrenton,Town of WWTP NPDES#: NC0020834
738 US Hwy 401 South Project: PPA
Warrenton,NC 27589 Date Sample Rcvd: 3/9/2017
Meritech Work Order# 030917137 Sample: Effluent Composite 3/8-9/17
Parameters Result Analysis Date Reporting Limit Method
Total Dissolved Solids 424 mg/L 3/15/17 10.0 mg/L SM 2540C
Ammonia,Nitrogen <0.1 mg/L 3/13/17 0.1 mg/L EPA 350.1
TKN <0.20 mg/L 3/14/17 0.20 mg/L EPA 351.1
Nitrate/Nitrite,Nitrogen 29.9 mg/L 3/10/17 0.10 mg/L EPA 353.2
Nitrogen,total 29.9 mg/L 3/14/17 0.20 mg/L EPA 353.2
Antimony,total <0.025 mg/L 3/14/17 0.025 mg/L EPA 200.7
Arsenic,total <0.010 mg/L 3/14/17 0.010 mg/L EPA 200.7
Beryllium,total <0.005 mg/L 3/14/17 0.005 mg/L EPA 200.7
Cadmium,total <0.002 mg/L 3/14/17 0.002 mg/L EPA 200.7
Chromium,total <0.005 mg/L 3/14/17 0.005 mg/L EPA 200.7
Copper,total -0.019 mg/L 3/14/17 0.002 mg/L EPA 200,7
Lead,total <0.010 mg/L 3/14/17 0.010 mg/L EPA 200.7
Nickel,total <0.010 mg/L 3/14/17 0.010 mg/L EPA 200.7
Phosphorus,total 1.42 mg/L 3/14/17 0.020 mg/L EPA 200.7
Selenium,total <0.010 mg/L 3/14/17 0.010 mg/L EPA 200.7
Silver,total <0.005 mg/L 3/14/17 0.005 mg/L EPA 200.7
Thallium,total <0.020 mg/L 3/28/17 0.020 mg/L EPA 200.7
Zinc,total 0.074 mg/L 3/14/17 0.010 mg/L EPA 200.7
Hardness(titration) 138 mg/L 3/16/17 1 mg/L SM 2340C
EPA 625 Attached 3/25/17 - - 625
Meritech Work Order# 030917138 Sample: Effluent PPA Grab 3/9/17
Parameters Result Analysis Date Reporting Limit Method
Cyanide,total <0.005 mg/L 3/17/17 0.005 mg/L EPA 335.4
Oil&Grease(HEM) <5 mg/L 3/13/17
Phenols,total <0.010 mg/L 3/17/17 0.010 mg/L EPA 420.1
EPA 624 Attached 3/14/17 - - 624
Total Residual Chlorine 0.03 mg/L 3/9/17 0.1 mg/L SM 4500 C1G
Dissolved Oxygen 9.91 mg/L 3/9/17 1.0 mg/L SM 4500-0-G
I hereby certify that I have reviewed and approve these data. (,t, ger
Laboratory Representative
642 Tamco Road,Reidsville,North Carolina 27320
tel.[phone] fax.[phone]

1
1
.:- .
MERITECH, INC.
Environmental Laboratories
1 Laboratory Certificate#165
Client:
Warrenton Merited' ID#: 030917137
Project: 625 Analysis: 03/24/17
Client Sample ID: Effluent Extraction: 03/15/17
Sample Collection: 03/09/17 Analyst: PM
Dilution Factor: 1
EPA 625 SEMIVOLATILE ORGANICS
Parameter Result Parameter Result
Acenaphthene <10 ug/L Fluoranthene <10 ug/L
Acenaphthylene <10 ug/L Fluorene <10 ug/L
Anthracene <10 ug/L Hexachlorobenzene <10 ug/L
Benzidine <50 ug/L Hexachlorobutadiene <10 ug/L
Benzo(a)anthracene <10 ug/L Hexachlorocyclopentadiene <50 ug/L
Benzo(a)pyrene <10 ug/L Hexachloroethane <10 ug/L
3,4-Benzofluoranthene <10 ug/L Indeno(1,2,3-cd)pyrene <10 ug/L
Benzo(k)fluoranthene <10 ug/L Isophorone <10 ug/L
Benzo(g,h,i)perylene <10 ug/L 2-Methylnaphthaleue <10 ug/L
Benzyl butyl phthalate <10 ug/L Naphthalene <10 ug/L
Bis(2-chloroethoxy)methane <10 ug/L Nitrobenzene <10 ug/L
Bis(2-chloroethyl)ether <10 ug/L N-Nitrosodimethylamine <10 ug/L
Bis(2-chloroisopropyl)ether <10 ug/L N-Nitrosodi-n-propylamine <10 ug/L
Bis(2-ethylhexyl)phthalate <10 ug/L N-Nitrosodiphenylamine <10 ug/L
4-Brornophenyl phenyl ether <10 u Phenanthrene <10 Y � ug/L
2-Chloronaphthalene <10 ug/L Pyrene <10 ug
/L
Yr
4-Chlorophenyl phenyl ether <10 ug/L 1,2,4-Trichlorobenzene <10 ug/L
Chrysene <10 ug/L
Dibenzo(a,h)anthracene <10 ug/L p-Chloro-m-cresol <10 ug/L
1,2-Dichlorobenzene <10 ug/L 2-Chlorophenol <10 ug/L
1,3-Dichlorobenzene <10 ug/L 2,4-Dichlorophenol <10 ug/L
1,4-Dichlorobenzene <10 ug/L 2,4-Dimethylphenol <10 ug/L
3,3'-Dichlorobenzidine <50 ug/L 2,4-Dinitrophenol <50 ug/L
Diethyl phthalate <10 ug/L 4,6-Dinitro-o-cresol <50 ug/L
Dimethyl phthalate <10 ug/L 2-Nitrophenol <10 ug/L
Di-n-butyl phthalate <10 ug/L 4-Nitrophenol <50 ug/L
2,4-Dinitrotoluene <10 ug/L Pentachlorophenol <50 ug/L
2,6-Dinitrotoluene <10 ug/L Phenol <10 ug/L
Di-n-octyl phthalate <10 ug/L 2,4,6-Trichlorophenol <10 ug/L
1,2-Diphenylhydrazine <10 ug/L
I hereby certify that I have reviewed and approve these data. 6. te2-4(2
Laboratory Representative
642 Tamco Road * Reidsville, NC 27320
[phone] Ph * [phone] Fax
1

MERITECH, INC.
Environmental Laboratories
•
Laboratory Certification#165
Client: Warrenton Merited]ID#: 030917138
Project: 624 Analysis: 03/14/17
Client Sample ID: Effluent Analyst: VWV
Sample Collection: 03/09/17 Dilution Factor: 1
Report Date: 03/22/17
EPA 624 VOLATILE ORGANICS
Parameter Result
Benzene <1.00 ug/L
Dichlorobromomethane <1.00 ug/L
Bromoform <1.00 ug/L
Methyl Bromide <5.00 ug/L
Carbon Tetrachloride <1.00 ug/L
Chlorobenzene <1.00 ug/L
Chloroethane <5.00 ug/L
2-Chloroethyl vinyl ether <5.00 ug/L
Chloroform 2.89 ug/L
Methyl Chloride <5.00 ug/L
Chlorodibromomethane < 1.00 ug/L
1,2-Dibromoethane <1.00 ug/L
1,1-Dichloroethane <1.00 ug/L
1,2-Dichloroethane <1.00 ug/L
1,4-Dichlorobenzene <1.00 ug/L
1,2-Dichlorobenzene <1.00 ug/L
1,3-Dichlorobenzene <1.00 ug/L
1,1-Dichloroethylene < 1.00 ug/L
trans-1,2-Dichloroethylene < 1.00 ug/L
1,2-Dichloropropane <1.00 ug/L
cis-1,3-Dichloropropylene <1.00 ug/L
trans-1,3-Dichloropropylene < 1.00 ug/L
Ethyl benzene < 1.00 ug/L
Methylene chloride <1.00 ug/L
1,1,2,2-Tetrachloroethane < 1.00 ug/L
Tetrachloroethylene <1.00 ug/L
Toluene < 1.00 ug/L
1,1,1-Trichloroethane <1.00 ug/L
1,1,2-Trichloroethane < 1.00 ug/L
Trichloroethylene <1.00 ug/L
Trichlorofluoromethane <5.00 ug/L
Vinyl chloride <5.00 ug/L
Additional Compounds
Acrolein <50.0 ug/L
Acrylonitrile <10.0 ug/L
1 hereby certify that I have reviewed and approve these data. G IV,"
Laboratory Representative
642 Tamco Road* Reidsville, NC 27320
[phone] Ph * [phone] Fax

MERI TECH INC.
ENVIRONMENTAL LABORATORIES
Laboratory Certification No. 165
Cli
ent: Warrenton,Town of WWTP Date Sampled 03/09/17
738 US Hwy 401 South Digested 03/10/17
Warrenton,NC 27589 Analysis 03/21/17
Attention Bill Perkinson Analyst: CWL
NPDES#
EPA 1631 Low Level Mercury Analysis
Meritech ID# Sample ID Result Reporting Limit
MBLK0210S Method Blank <0.5 ng/L 0.5 ng/L
M03101723 Field Blank < 1.0 ng/L 1.0 ng/L
M03101724 Effluent - 1.35 ng/L 1.0 ng/L
I hereby certify that I have reviewed and approve these data.
1sc. 44:2
Laboratory Representative
642 Tamco Rd - PO Box 27 - Reidsville, NC 27320
[phone] Ph - [phone] Fax
E-Mail: [e-mail]

Meritech, Inc.
Environmental Laboratory
-' -..- Laboratory Certification No.165
Contact: Linda Bobbitt
Report Date: 7/9/2018
Client: Warrenton,Town of WWTP NPDES#: NC0020834
738 US Hwy 401 South Project: PPA
Warrenton,NC 27589 Date Sample Rcvd: 6/21/2018
Meritech Work Order# 06211895 Sample: Effluent Composite 6/20-21/18
Parameters Result Analysis Date Reporting Limit Method
✓Total Dissolved Solids 495 mg/L V 6/21/18 10.0 mg/L✓ SM 2540C v
• /Ammonia,Nitrogen <0.1 mg/L" 6/28/18 0.1 mg/L ✓ EPA 350.1
/TKN <0.20 mg/I.,-, 6/26/18 0.20 mg/L- EPA 351.1
/Nitrate/Nitrite,Nitrogen 35.0 mg/L✓ 6/22/18 0.10 mg/Li EPA 353.2
Nitrogen,total 35.0 mg/L 6/26/18 0.20 mg/L EPA 353.2
✓Antimony,total <0.025 mg/L ✓ 6/27/18 0.025 mg/L-/ EPA 200.7 v
....Arsenic,total <0.010 mg/L ✓ 6/27/18 0.010 mg/Li EPA 200.7✓
✓ Beryllium,total <0.005 mg/L v 6/27/18 0.005 mg/L✓ EPA 200.7 "✓ Cadmium,total <0.002 mg/L v 6/27/18 0.002 mg/L / EPA 200.7✓
/ Chromium,total <0.005 mg/I./ 6/27/18 0.005 mg/LI EPA 200.7
Copper,total 0.029 mg/L ✓ 6/27/18 0.002 mg/L v EPA 200.7--
Lead,total <0.010 mg/L 6/27/18 0.010 mg/L ' EPA 200.7'
Nickel,total <0.010 mg/L ./ 6/27/18 0.010 mg/L EPA 200.7✓
'Phosphorus,total 3.10 mg/L.r 6/27/18 0.020 mg/L✓ EPA 200.7✓
/Selenium,total <0.010 mg/L" 6/27/18 0.010 mg/L- EPA 200.7
Silver,total <0.005 mg/L 6/27/18 0.005 mg/L / EPA 200.7V
'Thallium,total <0.020 mg/L✓ 6/27/18 0.020 mg/L EPA 200.7 '
Zinc,total 0.048 mg/L 6/27/18 0.010 mg/L EPA 200.7✓
-'Hardness(titration) 128 mg/L-, 6/28/18 1 mg/L1 SM 2340C✓
EPA 625 Attached 7/5/18 - - 625
Meritech Work Order# 06211896 Sample: Effluent PPA Grab 6/21/18
Parameters Result Analysis Date Reporting Limit Method
✓ Cyanide,total <0.00 g/L`' 6/22/18 0.005 mg/L EPA 335.4
Oil&Grease(HEM) <5 mg/L✓ 6/25/18 5 mg/L/ EPA 1664B
/ Phenols,total 0.015 mg/L'f 6/25/18 0.010 mg/L✓ EPA 420.1
EPA 624 Attached 7/2/18 - - 624
✓Total Residual Chlorine 0.04 mg/L✓ 6/21/18 0.1 mg/LJ SM 4500 C1G✓
/ Dissolved Oxygen 7.45 mg/L 6/21/18 1.0 mg/L SM 4500-0-G
I hereby certify that I have reviewed and approve these data,
La oratory Representative
642 Tamco Road,Reidsville,North Carolina 27320
teI.[phone] fax.[phone]

•
1
MERITECI-!,
• INC.
, __ _
Environmental Laboratories
Laboratory Certificate#165 ,
Client: Town of Warrenton Meritech ID#: 06211895 1
Project: 625 Analysis: 07/05/18
I
Client Sample ID: Effluent Extraction: 06/25/18
Sample Collection: 06/21/18 Analyst: PM 1
Dilution Factor: 1 3
i
EPA 625.1 SEMIVOLATILE ORGANICS
Parameter Result Parameter
Result
1
Acenaphthene .7 <10 ug/LJ Fluoranthene/
Acenaphthylene <10 ug/L t
Y <10 ug/L Fluorene ✓ <10 ug/L/ f'
Anthracene ./ <10 ug/L✓ Hexachiorobenzene
' <10 ug/L�`
Benzidine /
<50 ug/L-/ Hexachlorobutadiene✓ <10 ug/L fir/"
Benzo(a)anthracene✓ <10 ug/L I, ,p g/ Hexachlorocyclopentadiene.� ✓<50 ug/L
Benzo(a)pyrene / <10 ug/L / Hexachloroethane ✓
3,4-Benzofluoranthene f <10 <10 ug/L-.-
ug/L./ Indeno(1,2,3-cd)pyrene✓ <10 ug/L.,
Benzo(k)fluoranthene ✓ <10 ug/L./ Isophorone i <10 ug/L
Benzo(g,h,i)perylene ./ <10 ug/L,/ 2-Methylnaphthalene < i
Benzyl butyl phthalate ✓ <10 ug/L✓ Naphthalene ../. <10
ug/L�-------
Bis(2-chloroetho ug/L
xy)methane V <10 ug/L.. Nitrobenzene ✓' <10 ug/L
Bis(2-chloroethyl)ether i <10 ug/L i N-Nitrosodimethylamine ,, <10 ug/L
Bis(2-chloroisopropyl)ether,•/ <10 ug/L/ N-Nitrosodi-n-propylamine/ <10 u L.f '
Bis(2-ethylhexyl)phthalate / <10 ug/L I N-Nitrosodi hen lamine / g/ s
4-Bromophenyl phenyl ether ✓ <10 u / P Y <10 ug/L�"
ug/LPhenanthrene -/- <10 ug/L'•2-Chloronaphthalene <10 ug/L' Pyrene -�
4-Chloro hen t phenyl ether <10 / <10 ug/L l 1
P Y P Y ug/L 1,2,4-Trichlorobenzene✓ <10 ug/L-' 1
Chrysene ✓ <10 ug/L./
Dibenzo(a,h)anthraceneNC <10 ug/Lf p-Chloro-m-cresol ✓ <10 ug/L✓ i
l,2-Dichlorobenzene _1 <10 ug/L✓ 2-Chlorophenol i <10 ug/L / 1
l,3-Dichlorobenzene ✓ <10 ug/L/ 2,4-Dichlorophenol ✓ <10 ug
1,4-Dichl orobenzene -/ <10 ug/L l 2,4-Dimethylphenol <10 ug/L
3,3'-Dichlorobenzidine ✓ <50 ug/L/ 2,4-Dinitrophenol <50 ug/L
Diethyl phthalate ./ <10 ug/II 4,6-Dinitro-o-cresol ,i <50 ug/L,,
Dimethyl phthalate ✓ <10 ug/L 1 2-Nitro phenol ✓ E
Di-n-butylphthalate <10P <]0 ug/L�
tY ug/L 4-Nitrophenol ✓ <50 ug/L✓
2,4-Dinitrotoluene ./ <10 ug/L.. Pentachlorophenol ✓ <50 ug/L /
2,6-Dinitrotoluene ✓ <10 ug/L ✓ Phenol '� <10 ug/L
Di-n-octyl phthalate <10 ug/L I 2,4,6-Trichlorophenol
l,2 Di
P <10 ug/L
p y ydrazlne �j <10 ug/L✓ �
hen lh
1
I
1
I hereby certify that I have reviewed and approve these data. dez.--- ,,//
Laboratory Representative
i
i
4
642 Tamco Road * Reidsville, NC 27320
[phone] Ph* [phone] Fax

r
, .
• .
,•
4
s
MERITECH, IN.., Cr
' " -- Environmental Laboratories
.,„_0,
Laboratory Certification#165
s
F
F
Client: Town of Warrenton WWTP Meritech ID#: 06211896 i
Project: Effluent Analysis: 07/02/18
Client Sample ID: Effluent Analyst: VWV
Sample Collection: 06/21/18 Dilution Factor: 1 t
Report Date: 07/05/18
EPA 624.1 VOLATILE ORGANICS
Parameter Result
Benzene J <1.00 ug/LJ
Dichlorobromomethane ./ <1.00 ug/L
J
Bromoform,/ < 1.00 ug/L 4 3
Methyl Bromide./ <5.00 ug/L
Carbon Tetrachloride f < 1.00 ug/L-•
Chlorobenzene -✓ < 1.00 ug/L -I. €
Chloroethane ✓ <5.00 ug/L✓
2-Chloroethyl vinyl ether .. <5.00 ug/LII
Chloroform 4.19 ug/L✓
Methyl Chloride f <5.00 ug/L/ :
Chlorodibromomethane 1 < 1.00 ug/L✓
1,2-Dibromoethane <1.00 ug/L
l,l-Dichloroethane ✓ < 1.00 ug/L--/
1,2-Dichloroethane .f < 1.00 ugfL./
1,4-Dichlorobenzene <1.00 ug/L
1,2-Dichlorobenzene <1.00 ug/L
1,3-Dichlorobenzene <1.00 ug/L
1,1-Dichloroethylene✓ < 1.00 ug/Ls/
trans-1,2-Dichloroethylene✓ < 1.00 ug/LJ
l,2-Dichloropropane-' < 1.00 ug/L✓ 1
cis-I,3-Dichloropropylene <1.00 ug/L>
trans-1,3-Dichloropropylene < 1.00 ug/L
Ethyl benzene ./- < 1.00 ug/L J
Methylene chloride.. < 1.00 ug/L,'
1,1,2,2-Tetrachloroethane ./ < 1.00 ug/L✓
Tet•achloroethylene ✓ < 1.00 ug/L-.
Toluene ✓ < 1.00 ug/L, 2
1,1,1-Trich loroethane-/ < 1.00 ug/L r
1,1,2-Trichloroethane/ <1.00 ug/L'
Trichloroethylene ./ < 1.00 ug/L✓
Trichlorofluoromethane <5.00 ug/L -
Vinyl chloride ✓ <5.00 ug/L✓
Additional Compounds
Acrolein ✓ <50.0 ug/L V
Acrylonitrile ' <10.0 ug/L'
i3
:
I hereby certify that I have reviewed and approve these data.
Labo tory res ntative
i
642 Tamco Road * Reidsville, NC 27320 €
[phone] Ph * [phone] Fax

. .
,,. , , MERITECH INC.
i,
,......._, ,
ENVIRONMENTAL LABORATORIES
0 Laboratory Certification No. 165
I
Client: City of Warrenton WWTP Date Sampled 06/21/18
738 US Hwy 401 South Digested 06/22/18
Warrenton,NC 27589 Analysis 07/03/18
Attention Bill Perkinson Analyst: CWL
NPDES#
EPA 1631 Low Level Mercury Analysis
E
1
Meritech ID# Sample ID Result Reporting Limit
R
MBLK0419Q Method Blank <0.5 ng/L 0.5 ng/L
E
M06221801 Field Blank < 1.0 ng/L 1.0 ng/L i
g
M06221802 Effluent 3.54 ng/L 1.0 ng/L
I
1
1
Fy
t
I hereby certify that I have reviewed and approve these data.
1
1
Laboratory Representative
9
6
q
642 Tamco Rd - PO Box 27 - Reidsville, NC 27320 €
[phone] Ph - [phone] Fax
E-Mail: [e-mail] 1
1

Warren County WWTP
NC0020834— Outfall 001
Supplement to NPDES Permit Renewal (Tar-Pamlico)
E 4. Summary of Chronic Toxicity Data(previously submitted)
Date Sample Type _ Test Method Test Result
03/21/2019 24 Hour Composite NC Chronic Pass
03/22/2019 24 Hour Composite Fathead >100
03/07/2018 24 Hour Composite NC Chronic Pass
06/20/2018 24 Hour Composite NC Chronic Pass
6/19/2018 24 Hour Composite Fathead >100
09/26/2018 24 Hour Composite NC Chronic Pass
09/25/2018 24 Hour Composite Fathead >100
12/12/2018 24 Hour Composite NC Chronic Pass
12/12/2018 24 Hour Composite Fathead >100
03/08/17 24 Hour Composite NC Chronic Pass
06/07/2017 24 Hour Composite NC Chronic Pass
09/20/2017 24 Hour Composite NC Chronic Pass
12/06/2017 24 Hour Composite NC Chronic Pass 1
03/02/2016 24 Hour Composite NC Chronic Pass
06/15/2016 24 Hour Composite NC Chronic Pass
09/14/2016 24 Hour Composite NC Chronic Pass
12/07/2016 24 Hour Composite NC Chronic Pass
03/04/2015 24 Hour Composite NC Chronic Pass
06/08/2015 24 Hour Composite NC Chronic Pass
09/14/2015 24 Hour Composite NC Chronic Pass
12/02/2015 24 Hour Composite NC Chronic Pass

il
C_�-gay i Ct,i<� 1 ) 1ei
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 03/27/19
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing es : �lERITECH LABS, INC.
x a �/j/J vJ'y� 5 � Comments:
Sig�atuurree of Ope for in ponsible Charge
x 4 ,
Signatur of Laboratory Sup rvisor * PASSED: 6.97% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = 1.322
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = 6.97
% Mortality Avg.Reprod.
# Young. Produced 19 18 22 21 22 22 22 20 17 22 18 21
0.00 20.33
Control Control
Adult (L) ive (D)ead L L L L L L L L L L L L 1
0.00 18.92
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
9.221% PASS FAIL
# Young Produced 23 17 16 17 21 19 24 17 16 14 22 21 % control orgs X
producing 3rd
brood Check One
Adult (L)ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 03/20/19
Control 8.18 8.02 8.04 7.99 7.97 8.04 Collection (Start) Date
Sample 1: 03/18/19 Sample 2: 03/20/19
Treatment 2 7.27 5.99 7.16 7.54 7.35 7.45 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 25.2 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 25.7 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 42
Control 8.05 7.71 7.64 7.46 7.90 7.50
Spec. Cond. (pmhos) 148 422 456
Treatment 2 8.19 7.58 8 .30 7.37 8.05 7.44
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 1.8 1.3
(Mortality expressed as %, combining replicates) I
Note: Please
% % % % % % % % , Concentration Complete This
Section Also
% % % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average Probit _
% -- % Spearman Karber _ Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)
J

r , .
Effluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test Date:3/27/2019
Facility: Warrenton WWTP NPDES#NC00 20834 Pipe#: 001 County: Warren
Laboratory: Meritech, Inc. [ Comments'
x lw)j 'c 4 �J'�- ,
Signature of Operatr in�Re+sspon sible Charge
x ,1??-' �1AT? 'L C
Signature of Laboratory Supervisor
MAIL ORIGINAL TO: Water Sciences Section
Aquatic Toxicology Branch
Division of Water Resources
1621 Mail Service Center
Raleigh,N.C.27699-1621
Test Initiation Date/Time 3/19/2019 4:07 PM Avg Wt/Surv. Control 0.615 Test Organisms
%Eff. Repl. 1 2 3 4 r Cultured In-House
Control Surviving# 10 10 10 10 %Survival 100.0 r Outside Supplier
Original# 10 10 10 10 1
Wt/original(mg) 0.641 0.613 0.562 0.643 Avg Wt(mg) 0.615 Hatch Date: 3/18/19
19 Surviving# 10 9 10 10 %Survival 97.5 Hatch Time: 3:00 pm CT
Original# 10 10 10 10 _
Wt/original(mg) 0.652 0.457 0.670 0.570 Avg Wt(mg) 0.587
38 Surviving# 10 10 10 10 %Survival 100.0
Original# 10 10 10 10
Wt/original(mg) 0.656 0.748 0.716 0.592 Avg Wt(mg) 0.678
76 Surviving# 9 10 9 10 %Survival 95.0
Original# 10 10 10 10
Wt/original(mg) 0.528 0.658 0.602 0.647 Avg Wt(mg) 0.609
88 Surviving# 9 9 10 10 %Survival 95.0 _
• Original# 10 10 10 10
Wt/original(mg) 0.654 0.572 0.567 0.602 Avg Wt(mg) 0.599
100 Surviving# 10 10 10 10 %Survival 100.0
Original# 10 10 10 10
Wt/original(mg) 0.642 0.719 0.694 0.641 Avg Wt(mg) 0.674
Water Quality Data Day
Control 0 1 2 3 4 5 6
pH(SU)!nit/Fin 8.11 / 7.93 8.15 / 7.97 8.07 / 7.82 8.19 / 7.99 8.15 / 7.21 8.23 / 8.00 8.29 / 7.77
DO(mg/L) Init/Fin 7.72 / 7.34 7.75 / 7.52 7.68 / 6.92 7.76 / 7.46 8.02 17.58 8.23 17.36 7.84 / 6.71
Temp(C)[nit/Fin 24.9 / 24.3 25.5 / 25.5 25.0 124.9 25.2 / 25.3 24.1 124.9 24.5 / 24.9 24.5 / 25.2
High Concentration o 1 2 3 4 5 6
pH(SU)Init/Fin 6.48 / 6.87 6.75 / 6.93 6.70 / 6.99 6.81 17.10 6.93 / 7.34 8.02 / 7.07 7.16 / 7.09
DO(mg/L) Init/Fin 8.36 / 7.60 8.17 / 7.49 8.43 / 6.97 8.22 17.38 8.47 / 7.49 8.29 / 7.17 8.03 / 6.53
Temp(C)Init/Fin 25.3 / 24.8 24.8 / 25.5 24.9 / 25.1 25.1 / 25.1 24.5 / 24.7 24.9 / 24.7 24.8 / 24.7
Sample 1 2 3 Survival Growth Overall Result
Collection Start Date 3/18/2019 3/20/2019 3/21/2019 Normal Fl Fl ChV >100
Grab Horn.Var. ri Fi
Composite(Duration) 25.2 25.7 25.3 NOEC 100 100
Hardness(mg/L) 86 89 88 LOEC >100 >100
Alkalinity(mg/L) 10 13 16 ChV >100 >100
Conductivity(umhos/cm) 432 458 435 Method Steel's Dunnett's
Chlorine(mg/L) <0.1 <0.1 <0.1
Temp.at Receipt(°C) 1.8 1.3 2.0 Stats Survival Growth
- Conc. Critical Calculated Critical Calculated
Dilution H2O Batch# 1376 1377 1378 1379 1380 19 10 16 2.41 0.6395
Hardness(mg/L) 46 44 46 46 44 38 10 18 2.41 -1.4708
Alkalinity(mg/L) 54 55 56 53 53 76 10 14 2.41 0.1395
Conductivity(umhos/cm) 192 '208 197 197 215 88 10 14 2.41 0.3721
100 10 18 2.41 -1.3778
rl lAr/1 C....... Al C/.1/R41

1. F • RECEIVED APR 112018
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 03/15/18
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing TTee t: MFRITECH LABS, INC.
X ✓I//�C./f'w /) , F-'1 it Comments:
Signature of Operator in sponsible Charge
X
Signa ure of Lab ratory cupe 1b r * PASSED: -10.58% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -2.614
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -10.58
# Young Produced 25 27 24 23 26 19 24 23 28 21 28 25 % Mortality Avg.Reprod.
- 0.00 24.42
Control Control
Adult (L) ive (D)ead L L L L L L L L L L L L
0.00 27.00
Treatment 2 Treatment 2
Effluent t. 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
11.108% PASS FAIL
# Young Produced 30 27 27 25 26 29 25 29 24 25 27 30 % control orgs X
producing 3rd
brood Check One
Adult (L)ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 03/07/18
I Control 8.24 8.12 8.12 8.00 8.05 8.05 Collection (Start) Date
Sample 1: 03/05/18 Sample 2: 03/07/18 1
Treatment 2 7.90 8.20 7.93 8.13 7.87 8.12 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 23 .9 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 24.1 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 44
Control 7.52 7.60 7.65 7.42 7.75 7.50
Spec. Cond. (pmhos) 186 551 571
Treatment 2 8.00 7.68 8 .18 7.59 8.23 7.43
Chlorine(mg/1) <0.1 <0.1
11 LC50/Acute Toxicity Test Sample temp. at receipt(°C) 1.1 0.8
( (Mortality expressed as %, combining replicates)
- - Note: Please
% % % % % % % % % Concentration Complete This
- Section Also
% % % % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average Probit _
-- % Spearman Karber - Other High
Conc.
pH D.O.
1 Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)
I

RECEIVED JUL 0 2 2018
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 06/27/18
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing Test: MERITECH LABS, INC.
Comments:
Signature of ¢ t� in Responsible Charge
X U X
Signature of Laboratory Supervisor * PASSED: 5.82% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = 1.693
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = 5.82
% Mortality Avg.Reprod.
# Young Produced 25 23 26 23 24 24 22 21 23 23 22 19
- - 0.00 22.92
I Control Control
Adult (L)ive (D)ead L L L L L L L L L L L L
0.00 21.58
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
- 7.994% PASS FAIL
# Young Produced 23 20 20 22 25 25 20 21 21 20 23 19 % control orgs X
producing 3rd
brood Check One
Adult (L) ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 06/20/18
Control 8.13 8.00 8.28 8.17 8.17 8.18 Collection (Start) Date
Sample 1: 06/18/18 Sample 2: 06/20/18
Treatment 2 7.72 8.00 7.61 8.07 7.80 8.09 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 23 .9 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 22.2 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness (mg/1) 47
Control 7.76 7.54 7.79 7.67 7.81 7.65
Spec. Cond. (pmhos) 183 604 636
Treatment 2 8.03 7.59 8.06 7.63 8.16 7.70
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 0.8 1.3
(Mortality expressed as %, combining replicates)
Note: Please
% % % % % % % % % % Concentration Complete This
Section Also
a a o % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average Probit
% -- % Spearman Karber = Other - High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

; , . w---1 .,� ` 116 11 j 3+-
RECEIVE JUL 02 - 18
Effluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test Date:6/28/2018
Facility: Warrenton WWTP NPDES#NCOO 20834 Pipe#: 001 County: Warren
Laboratory: Meritech, Inc. Comments)
Signature of Operator Respon ' le Charg �
f
C
Signature of Laboratory Supervisor
MAIL ORIGINAL TO: Water Sciences Section
Aquatic Toxicology Branch
Division of Water Resources
1621 Mail Service Center
Raleigh,N.C.27699-1621
Test Initiation Date/Time 6/19/2018 4:33 PM Avg Wt/Surv.Control 0.731 Test Organisms
%Eff. Repl. 1 2 3 4 r Cultured In-House
Control Surviving# 10 10 10 10 %Survival 100.0 r Outside Supplier
Original# 10 10 10 10
Wt/original(mg) 0.772 0.729 0.679 0.742 Avg Wt(mg) 0.731 Hatch Date: 6/18/18
19 Surviving# 10 10 9 10 %Survival 97.5 Hatch Time: 3:00 pm CT
Original# 10 10 10 10
Wt/original(mg) 0.753 0.739 0.690 0.801 Avg Wt(mg) 0.746
38 Surviving# 10 10 9 10 %Survival 97.5
Original# 10 10 10 10
Wt/original(mg) 0.786 0.725 0.869 0.829 Avg Wt(mg) 0.802
76 Surviving# 10 10 10 10 %Survival 100.0
Original# 10 10 10 10
I Wt/original(mg) 0.887 0.751 0.900 0.806 Avg Wt(mg) 0.836
88 Surviving# 10 10 10 9 %Survival 97.5
Original# 10 10 10 10
Wt/original(mg) 0.837 0.922 0.923 0.778 Avg Wt(mg) 0.865
100 Surviving# 10 10 10 10 %Survival 100.0
Original# 10 10 10 10
Wt/original(mg) 0.810 0.829 0.810 0.825 Avg Wt(mg) 0.819
Water Quality Data Day
Control 0 1 2 3 4 5 6
pH(SU)!nit/Fin 8.25 / 7.90 8.19 / 7.95 8.21 / 7.95 _ 8.05 / 7.93 8.26 / 8.24 8.48 / 7.89 8.20 / 7.64
DO(mg/L) Init/Fin 7.91 / 7.15 7.71 / 7.23 7.85 / 7.06 7.74 / 7.85 7.74 / 7.85 8.10 / 8.01 8.08 / 6.58
Temp(C)Init/Fin 24.3 / 24.1 24.6 / 24.8 24.6 / 25.1 24.9 / 24.7 24.5 / 25.1 24.3 / 24.8 24.4 / 25.0
High Concentration o 1 2 3 4 5 6
pH(SU)Init/Fin 7.43 / 7.70 7.53 / 7.77 7.30 / 7.78 . 7.45 / 7.96 7.93 / 7.97 7.81 1 7.66 7.73 / 7.48
DO(mg/L) Init/Fin 8.23 / 7.40 8.05 / 7.32 8.15 / 7.37 7.97 / 7.80 8.16 / 8.11 8.21 / 6.91 8.04 / 6.74
Temp(C)Init/Fin 25.2 / 24.2 24.4 / 24.7 24.3 / 25.3 24.7 / 24.9 24.7 / 25.9 25.6 1 24.7 24.2 / 24.2
Sample 1 2 3 Survival Growth Overall Result
Collection Start Date 6/18/2018 6/20/2018 6/21/2018 Normal Fl Fl ChV >100
Grab Horn.Var. ri (rl
Composite(Duration) 23.9 22.2 24.0 NOEC 100 100
Hardness(mg/L) 114 138 126 LOEC >100 >100
Alkalinity(mg/L) 42 47 41 ChV >100 >100
Conductivity(umhos/cm) 604 641 635 Method Steel's Dunnett's
Chlorine(mg/L) <0.1 <0.1 <0.1
Temp.at Receipt(°C) 0.8 1.3 1.0 Stats Survival Growth
Conc. Critical Calculated Critical Calculated
Dilution H2O Batch# 1280 1282 1283 1284 19 10 16 2.41 -0.4003
Hardness(mg/L) 44 42 46 42 38 10 16 2.41 -1.8832
Alkalinity(mg/L) 51 52 53 51 76 10 18 2.41 -2.7691
Conductivity(umhos/cm) 175 204 213 212 88 10 16 2.41 -3.5303
100 10 18 2.41 -2.3098
nIA/n C...... AT C M111A1

. , ! nci, \cc1j ) (--' ) 4 1
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 10/04/18
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performin Test: MERITECH LABS, INC.
�i1/2'' .�1 ��t� seiv-�.. Comments
x j"G
Signat re of Op ator in Responsible Charge
Signature of Laboratory Supervisor * PASSED: 4.62% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = 1.019
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = 4.62
% Mortality Avg.Reprod.
# Young Produced 27 25 23 21 27 21 24 29 26 23 28 29
• 0.00 25.25
Control Control
Adult (L)ive (D)ead L L L L L L L L L L L L
0.00 24.08
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
11.344% PASS FAIL
# Young Produced 27 27 26 21 22 25 19 24 26 24 21 27 % control orgs X
producing 3rd
brood Check One
Adult (L)ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 09/26/18
Control 7.99 8.10 8.08 8.06 8.03 7.99 Collection (Start) Date
Sample 1: 09/24/18 Sample 2: 09/26/18
Treatment 2 8.09 8.31 7.81 8.22 7.99 8.12 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 23 .3 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 23 .4 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness (mg/1) 46
Control 7.76 7.33 7.50 7.80 7.95 7.37
Spec. Cond. (pmhos) 166 345 600
Treatment 2 7.85 7.38 7.79 7.83 7.55 7.30
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 1.3 1.0
(Mortality expressed as %, combining replicates)
Note: Please
% % % % % % % % % % Concentration Complete This
- Section Also
% % % % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average _ Probit
% -- % Spearman Karber Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

C•
. 1�f �\• 1tL.) ►1ICt1 � r �I 1 �') j I �l ?'
Effluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test Date:10/5/2018
Facility: Warrenton WWTP NPDES#NCO() 20834
Pipe#: 001 County: Warren
Laboratory: Meritech, Inc.
J�r Comments'
Signature of Operator in Respo ible C rge
� .�
Signature of Laboratory Supervisor
MAIL ORIGINAL TO: Water Sciences Section
Aquatic Toxicology Branch
Division of Water Resources
1621 Mail Service Center
Raleigh,N.C.27699-1621
Test Initiation Date/Time 9/25/2018 4:50 PM
Avg Wt/Surv. Control) 0.755 I Test Organisms
Eff. Repl. 1 2 3 4
(Control I Surviving# 10 10 r Cultured In-House
10 8 %Survival' 95.0 I rr Outside Supplier
Original# 10 10 10 I 10
Wt/original(mg) 0.831 0.763 0.694 0.584 Avg Wt(mg)I 0.718 I
Hatch Date: 9/24/18
19 I Surviving# 9 I 10 10 I 10 I %Survivals 97.5 I Hatch Time: 3:00 pm CT
Original# 10 10 10 10
Wt/original(mg) 0.595 0.600 0.681 0.771 Avg Wt(mg)I 0.662 I
I 38 I Surviving# 10 8 10 10 %Survivals 95.0 I
' Original# 10 10 10 10
Wt/original(mg) 0.627 0.588 0.628 0.676 Avg Wt(mg)I I
9)I 0.630
76 I Surviving# 10 10 10 I 10
%Survivals 100.0 I
Original# 10 10 10 10
Wt/original(mg) 0.627 0.662 0.764 0.755 Avg Wt(mg)I 0.702 I
88 I Surviving# 10 10 10 10
Original# 10 10 10 10 %Survival) 100.0 I
Wt/original(mg) 0.799 0.666 0.606 0.763 Avg Wt(mg)I 0.709 I
s 100 I Surviving# 10 10 10 I 10 1 %Survival' 100.0 I
Original# 10 10 10 10
Wt/original 9 (mg) 0.643 0.864 0.782 0.769 Avg Wt(mg)I 0.765 I
Hater Quality Data Day
Control 0 1 2 3 4
5 6
pH(SU)Init/Fin 8.04 / 7.63 8.13 / 7.98 8.08 / 7.77 8.10 / 8.08 8.21 / 8.15 8.23 / 7.93 8.16 / 7.91
DO(mg/L) Init/Fin 8.00 / 6.90 7.70 / 6.95 8.30 / 6.79 7.69 / 7.99 8.16 / 7.75 8.14 / 7.38 7.89 / 7.08
Temp(C)Init/Fin 24.5 / 24.3 24.2 / 24.8 24.3 / 24.7 24.4 / 25.7 24.1 / 25.3 25.0 / 25.1 24.3 / 25.1
High Concentration o 1 2 3 4
5 6
pH(SU)Init/Fin 7.94 / 8.12 8.00 / 8.28 7.68 / 7.88 7.77 / 8.15 8.06 / 8.06 8.07 / 7.90 7.81 / 7.91
DO(mg/L) Init/Fin 8.26 / 7.11 7.63 / 7.07 8.37 / 6.89 7.83 / 7.89 8.13 / 7.65 8.08 / 7.43 8.03 / 7.16
Temp(C)Init/Fin 24.5 / 24.3 25.1 / 24.8 24.5 / 24.7 24.1 / 24.6 25.9 / 24.9 25.0 / 25.4 24.9 / 25.0
Sample 1 2 3 Survival Growth
Collection Start Date 9/24/2018 9/26/2018 9/27/2018 Normal r Overall Result
rl Irl ChV ( >100 I
Grab Horn.Var. ri r')
Composite(Duration) 24.3 23.4 25.2 NOEC 100 100
Hardness(mg/L) 178 144 128 LOEC >100 >100
Alkalinity(mg/L) 115 77 63 ChV >100 >100
onductivity(umhos/cm) 647 611 571 Method Steel's Dunnett's
Chlorine(mg/L) <0.1 <0.1 <0.1
Temp.at Receipt(°C) 1.3 1.0 1.6 Stats Survival Growth
Conc. Critical Calculated Critical Calculated
Dilution H2O Batch# 1310 1311 1312 1313 19 10 18.5 2.41 0.9737
Hardness(mg/L) 42 42 42 43 38 10 18 2.41 1.5277
Alkalinity(mg/L) 51 54 52 56 76 10 20 2.41 0.2770
Dnductivity(umhos/cm) 210 223 201 211 88 10 20 2.41 0.1645
100 10 20 2.41 -0.8050
DWO Form AT-5/9R)4)

c RECEIVED DEC 28 2018 �1ct`It`l' G`P' � ' '''
"-1 - I1
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 12/20/18
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laborato Performing Test: MERITECH LABS, INC.
Comments:
Signature of Op jtor Responsible Charge
X / C eo z � "�`2-
Signature of Laboratory upervisor * PASSED: -2.37% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -0.627
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -2.37
% Mortality Avg.Reprod.
# Young Produced 21 21 22 22 18 22 21 24 23 22 21 16
. 0.00 21.08
Control Control
Adult (L)ive (D)ead L L L L L L L L L L L L
0.00 21.58
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 it 12 Control CV
10.205% PASS FAIL
# Young Produced 20 24 22 19 24 22 22 20 22 22 19 23 % control orgs X
producing 3rd
brood Check One
Adult (L) ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 12/12/18
Control 7.94 7.90 8.08 7.90 8.00 7.92 Collection (Start) Date
Sample 1: 12/10/18 Sample 2: 12/12/18
Treatment 2 7.61 7.70 7.54 7.71 7.55 7.64 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e - I S S
a n a n a n Sample 1 X 24.5 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 25.0 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness (mg/1) 44
Control 7.91 7.40 7.72 7.51 7.85 7.45
Spec. Cond. (pmhos) 163 510 445
Treatment 2 8.25 7.31 8.25 7.52 8.24 7.38
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 1.1 1.0
I
(Mortality expressed as %, combining replicates)
Note: Please
% g % % % % % % % % Concentration Complete This
Section Also
% t % % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average _ Probit _
% -- % Spearman Karber Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

:Effluent Toxicity Report Form-Chronic Fathead Minnow Multi-Concentration Test Date:12/31/2018
Facility: Town of Warrenton NPDE #NCO() 20834 Pipe#: 001 County: Warren
Lab story Research&Analyti Lab r ories Comments Final Effluent
3`19 at �o���/-�r I� -espon le C arge ���
x 46,
Slgg ure �0 - ory Supervisor RAL#60235-01,60413-01,60489-01
MAIL ORIGINAL 10: Environmental Sciences Branch
Division of Water Quality
NC DENR
1621 Mail Service Center
Raleigh,NC 27699-1621
Test Initiation Date/Time 12/12/2018 / 2:32pm Avg Wt/Surv.Control 0.5716 Test Organisms
%Eff. Repl. 1 2 3 4 r Cultured In-House
Control Surviving# 15 15 15 15 %Survival 100.0 17 Outside Supplier
Original# 15 15 15 15
Wt/original(mg) 0.5533 0.5653 0.5493 0.6187 Avg Wt(mg) 0.5716 Hatch Date: 12/10/2018
I 19.001 Surviving# 15 15 15 15 %Survival 100.0 Hatch Time: >1600 1
Original# 15 15 15 15
Wt/original(mg) 0.5493 0.5960 0.5333 0.6773 Avg Wt(mg) 0.5890
.
38.001 Surviving# 15 15 15 15 %Survival 100.0
Original# 15 15 15 15
Wt/original(mg) 0.6293 0.6827 0.5720 0.6807 Avg Wt(mg) 0.6412
I 76.001 Surviving# 15 15 15 15 %Survivals 100.0
Original# 15 15 15 15
Wt/original(mg) 0.5422 0.7013 0.6487 0.5160 Avg Wt(mg) 0.6021
I 88.001 Surviving# 15 15 15 15 %Survival 100.0
Original# 15 15 15 15
Wt/original(mg) 0.5227 0.5680 0.4840 0.6393 Avg Wt(mg)I 0.5535
I 100.001 Surviving# 15 15 15 15 %Survival 100.0
Original# 15 15 15 15
Wt/original(mg) 0.5993 0.6473 0.6727 0.6340 Avg Wt(mg)1 0.63831
Water Quality Data Day
Control 0 1 2 3 4 5 6
pH(SU)Init/Fin 7.11 / 7.09 7.15 / 7.10 7.14 / 7.07 7.18 / 7.11 7.20 / 7.09 7.22 / 7.13 7.30 / 7.08
DO(mg/L) Init/Fin 8.6 / 8.4 8.6 / 8.4 8.5 / 8.2 8.6 / 8.1 8.6 / 8.2 8.6 / 8.1 8.6 / 8.0
Temp(C)Init/Fin 24.7 / 24.6 24.5 / 24.5 24.6 / 24.6 24.5 / 24.5 24.6 / 24.5 24.5 / 24.4 24.4 / 24.5
High Concentration 0 1 2 3 4 5 6
pH(SU)Init/Fin 7.34 / 7.30 7.37 / 7.25 7.36 / 7.21 7.40 / 7.20 7.37 / 7.19 7.39 / 7.14 7.36 / 7.22
DO(mg/L)Int/Fin 8.5 / 8.2 8.5 / 8.0 8.6 / 8.2 8.6 / 8.0 8.5 / 8.1 8.5 / 8.0 8.6 / 8.2
Temp(C)!nit/Fin 24.5 / 24.6 24.5 / 24.5 24.5 / 24.6 24.6 / 24.6 24.5 / 24.6 24.4 / 24.8 24.5 / 24.5
Sample 1 2 3 Survival Growth Overall Result
Collection Start Date 12/10/2018 12/13/2018 12/16/2018 Normal rj FL ChV >100%
Grab Horn.Var. r FL
Composite(Duration) 24 24 25 NOEC 100.00 100.00 1
Hardness(mg/L) 66 56 58 LOEC >100% >100%
Alkalinity(mg/L) 41 38 40 ChV >100% >100%
Conductivity(umhos/cm) 633 452 459 Method Steels Dunnetts
Chlorine(mg/L) 0.03 0.02 0.03
Temp.at Receipt(°C) 2.7 2.9 3.1 Stats Survival Growth
Conc. Critical Calculated Critical Calculated
Dilution H2O 19.00 10 17.5 2.41 -0.4142
Hardness(mg/L) 48 38.00 10 25 2.41 -1.6620
Alkalinity(mg/L) 38 76.00 10 18 2.41 -0.7267
Conductivity(umhos/cm) 190 88.00 10 17 2.41 0.4339
100.00 10 25 2.41 -1.5939
DWQ Form AT-5(1/04)

Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 03/16/17L/
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performin T st: ME2ITECH LABS, INC.
X 24�Y � Comments:
Sigr ire of O rat 'n Responsible Charge
x / / G'
Signature of aborato upez'visor * PASSED: -17.08$ Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduct;on Toxicity Test Chronic Test Results
Calculated t = -4.872
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Tabular t = 2.508
$ Reduction = -17. 08
# Young Produced 22 18 19 20 19 20 20 20 21 23 16 22 % Mortality Avg.Reprod.
0.00 20. 00
Adult (L)ive (D) ead L L L L L L L L L L L L Control Control
0.00 23 .42
Effluent $: 76% Treatment 2 Treatment 2
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
9.535% PASS FAIL
# Young Produced 23 22 21 24 24 27 23 24 24 22 23 24 % control orgs X
producing 3rd
Adult (L)ive (D)ead L L L L L L L L L L L L brood Check One
100$
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 03/08/17
Control 8.05 8.10 8.00 7.94 7.99 8.07 Collection (Start) Date
1Treatment 2 8.07 8 .26 7.87 8.05 7.85 8 .15 Sample T: 03/06/17 Sample 2: 03/08/17
p Type/Duration 2nd
s s s 1st P/F
t e ts e t e Grab Comp. Duration D
I S S
ar nd a n a nd Sample 1 X 24 .4 hrs L A A
t tt
U M M
1st sample 1st sample 2nd sample Sample 2 X 24 .1 hrs T P P
D.O.
Control 7.83 7.55 8.18 7.60 8 .12 7.02 Hardness (mg/1) 44
Treatment 2 8.10 7.49 8.37 7.57 8.58 7. 08 Spec. Cond. (pmhos) 183 682 627
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 2 .1 2.1
(Mortality expressed as $, combining replicates)
Note: Please
% $ % $ $
$ $ % $ $ Concentration Complete This
% $ % $ % % $ % % % Mortality Section Also
start/end start/end
LC50 = $ Method of Determination
95% Confidence Limits Moving Average _ Probit Control
$ -- $ Spearman Karber Other
- High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87 rev. 11/95 (DUBIA ver. 4 .41)

•
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 06/15/17
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Labora ory Performing est: MERITECH LABS, INC.
Comments:
/ XG1
X ��/
Signature of Op ra o in Response e C arge
X K
Signature o Laburat r rvisor * PASSED: -3 .89% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -1.023
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -3.89
I % Mortality Avg.Reprod.
# Young Produced 23 25 26 23 27 21 2326 21 22 25 21
0.00 23 .58
Control Control
Adult (L) ive (D)ead L L L L L L L L L L L L
0.00 24.50
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
I I 9.123% PASS FAIL
# Young Produced 24 26 27 24 23 25 25 26 27 26 21 20 % control orgs X
producing 3rd
brood Check One
Adult (L) ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 06/07/17
Control 7.99 8.16 8.08 8.03 8.09 8.04 Collection (Start) Date
Sample 1: 06/05/17 Sample 2: 06/07/17
Treatment 2 7.98 8.26 8.21 8.36 8.15 8.29 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 24.2 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 23 .9 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 44
Control 7.26 7.50 7.80 7.38 7.89 7.19
Spec. Cond. (pmhos) 171 621 683
Treatment 2 7.32 7.46 8.15 7.39 8.19 7.18
1 Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 2.5 1.2
(Mortality expressed as %, combining replicates) I
Note: Please
% % % % % % % % % Concentration Complete This
Section Also
% % % % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average Probit _
% -- % Spearman Karber _ Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
1
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

Sept oZ° 'l
rC,clLt-d i to-Ut-V1
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 10/10/17
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
1
Laboratory Performing es : MERITECH LABS, INC. 1
r Comments: Second Copy !:
X
S a re o Ope tor in esponsi e C arge
•
Sign ture of La oratory Supe isor * PASSED: 6.94% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = 2.106
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = 6.94
% Mortality Avg.Reprod.
# Young Produced 22 24 22 25 22 24 23 26 24 28 23 25
0.00 24.00
Control Control
Adult (L)ive (D)ead L L L L L L L L L L L L
0.00 22.33
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
7.538% PASS FAIL
## Young Produced 24 22 26 21 24 22 23 20 20 21 20 25 % control orgs X
- _ producing 3rd
brood Check One
Adult (L)ive (D)ead L L L L L L L L L L L L 100%
1st sample lst sample 2nd sample Complete This For Either Test
pH Test Start Date: 09/20/17
Control 8.08 8.07 8.17 8.21 8.14 8.10 Collection (Start) Date
Sample 1: 09/18/17 Sample 2: 09/20/17
Treatment 2 7.93 8.01 7.66 8.11 7.76 7.97 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S 1
a n a n a n Sample 1 X 24.2 hrs L A A
✓ d r d r d - U M M
t t t Sample 2 X 24.6 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 48
Control 7.90 7.78 7.87 7.63 7.94 7.42
Spec. Cond. (pxnhos) 180 368 651
Treatment 2 7.90 7.82 8.21 7.72 8.17 7.49
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 2.7 1.2
(Mortality expressed as %, combining replicates)
Note: Please
% % % % % % % % % Concentration Complete This
- Section Also
% % % % % % % % % % Mortality
start/end start/end
LC50 = I Method of Determination Control
95% Confidence Limits Moving Average Probit
% -- I Spearman Kerber Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

\ ,2*
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 12/14/17
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing Test: MERITECH LABS, INC.
X Comments:
��� ��gyp,, u,��
Signature of Oper or in Responsible Charge
X 72.4 G.� j
Signature of Labor y Supervisor * PASSED: -1.52% Reduction
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -0.282
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -1.52
# Young Produced 21 20 19 24 23 17 25 25 24 22 24 20 Mortality Avg.Reprod.
0.00 22.00
Adult (L) ive (D)ead L L L L L L L L L L L L Control Control
0.00 22.33
Effluent %: 76% Treatment 2 Treatment 2
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
11.790% PASS FAIL
# Young Produced 30 20 25 25 22 22 20 24 20 21 19 20 % control orgs X
producing 3rd
Adult (L)ive (D)ead L L L L L L L L L L L L brood100% Check One
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 12/06/17
Control 8.10 8.16 8.06 8.07 8.11 8.07 Collection (Start) Date
Treatment 2 8.04 8.22 8.00 8.12 7.95 8.15 Sample : 12/04/17 Sample 2: 12/06/17
ple Type/Duration 2nd
s s 1st P/F
t e s Grab Comp. Duration D
t e t e I S S
a n a n a n Sample 1 X 24.4 hrs L A
r d r d r d A
t t U M M
1st sample 1st sample 2nd sample Sample 2 X 24 hrs T P P
D.O.
Control 7.55 7.93 7.63 8.04 7.76 7.53 Hardness(mg/1) 48
Treatment 2 8.24 7.71 8.30 7.80 8.46 7.52 Spec. Cond. (limhos) 175 703 664
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test
Sample temp, at receipt(°C) 1.1 0.9
(Mortality expressed as %, combining replicates)
Note: Please
% % % % % % % % Concentration Complete This
% % % % % % % % % Mortality Section Also
start/end start/end
LC50 = % Method of Determination
95% Confidence Limits Moving Average Probit Control
% -- % Spearman Karber - Other
- High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)
1
1 J

•
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 03/14/16
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing Te t: MERITECH LABS, INC.
�'�/ �1�:4A/l� ,ef; , �af.Olflr-- Comments
X .C.C,
Signature of Operator i Responsible Charge
X -/,2
Signature of Laboratory Supervisor *
PASSED: _5.00� Reduction *
Work Order: Water Sciences Section -Aquatic Nommim
MAIL ORIGINAL TO: Toxicology Branch
Division of Water Resources
1621 Mail Service Center 621
North Carolina Ceriodaphnia Raleigh.N.0 27669-1621_
Chronic Pass/Fail Reproduction Toxicity Test Ccironic Test Results
Calculated t = -1.330
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -5.00
# Young Produced 25 31 26 27 25 28 27 26 26 23 30 26 Mortality Avg.Reprod.
0.00 26.67
Adult (L)ive (D)ead L L L L L L L L L L L L Control Control
0.00 28.00
Effluent W: 76% Treatment 2 Treatment 2
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
8.205% PASS FAIL
# Young Produced 28 31 32 28 27 26 27 24 26 28 26 33 % control orgs X
producing 3rd
Adult (L)ive (D)ead L L L L L L L L L L L L brood100% Check One
1st sample 1st sample 2nd sample Complete This For Either Test
PH Test Start Date: 03/02/16
Control 7.96 8.04 8.16 7.99 8.09 7.87 Collection (Start) Date
Treatment 2 7.94 8.33 7.97 8.36 8.04 8.43 Sample 1: 02/29/15 Sample 2: 03/02/16
ple Type/Duration 2nd
s s 1st P/F
s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 23 .9 hrs L A A
r d r d r d U M M
t t t Sample 2 X 23 .7 hrs T P P
1st sample 1st sample 2nd sample
D.O.
Control 7.80 8.11 7.76 7.92 8.12 7.92 Hardness(mg/1) 48
Treatment 2 8.28 8.13 8.37 7.97 8.49 7.84 Spec. Cond. (pmhos) 202 500 553
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 1.4 0.4
(Mortality expressed as %, combining replicates) I
% $ Note: Please
% Concentration Complete This
% % % % % % % % % % Mortality Section Also
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average Probit
* -- % Spearman Karber = Other - High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

I
•
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 06/22/16
Facility: WARRENTON WWTP iTPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing Test: MERITECH LABS, INC.
.//' r Comments:
X R
jignature o p or nnsi e C a ge
X �`�
Si nature of Laboratory tipervisor * PASSED: -2.34% Reduction
Work Order:
Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction ToxicityTest Chronic Test Results
Calculated t = -0.368
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -2.34
# Young Produced 19 29 33 32 24 34 30 28 26 28 29 30 Mortality Avg.Reprod.
0.00 28.50
Adult (L)ive (D)ead L L L L L L L L L L L L Control Control
0.00 29.17
Effluent %: 76% Treatment 2 Treatment 2
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
14.389% PASS FAIL
# Young Produced 24 28 34 29 34 21 32132 35 31 28 22 % control orgs X
producing 3rd
Adult (L)ive (D)ead L L L L L L L IL L L L L brood100% Check One
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 06/15/16
Control 7.97 8.00 7.97 8.04 8.04 8.16 Collection (Start) Date
Treatment 2 7.81 8.08 8.10 8.30 8.03 8.29 Samp le 1: 06/13/16 Sample 2: 06/15/16
pleType/Duration 2nd
s s 1st P/F
s Grab Comp. Duration D
t e t e t e I S S
a n a n a r} Sample 1 X 23 .8 hrs L A A
r d r d r U M M
t t t Sample 2 X 24.1 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 44
Control 8.10 7.61 7.90 7.90 7.82 7.72
Treatment 2 8.07 7.76 7.91 7.44 8.05 7.69 Spec. Cond. (pmhos) 168 532 563
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 0.4 0.7
(Mortality expressed as %, combining replicates) f
% % % % 1 % % % Concentration Note: Please
Complete This
% % %_ % % % % % 1% % Mortality Section Also
1 start/end start/end
LC50 = % Method of DOtermination Control
95% Confidence Limits Moving Average 1 Probit
t -- % Spearman Karber I Other - High
Conc.
pH D.O.
I Organism Tested: Daphnia Pulex Duration(hrs) :( s) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

;JWit' 1 v c0
r`� \of
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 09/26/16
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 0 County: WARREN
Laborat Performing Test: MERITECH LABS, INC.
Comments:
X Signature of O Hato iArgel. �G esp�ible Charge
X ���
Signature of oratory Supervisor * PASSED: -17.94% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, Ncrth Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -2.426
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -17.94
% Mortality Avg.Reprod.
# Young Produced 17 24 24 25 25 18 10 27 20 26 22 24
8.33 21.83
Control Control
Adult (L)ive (D)ead L L L L L L D L L L L L
0.00 25.75
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
22.2531 PASS FAIL
# Young Produced 22 29 22 28 23 25 25 28 24 30 25 28 1 control orgs X
producing 3rd
brood Check One
Adult (L)ive (D)ead L L L L L L L L L L L L 91.7%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 09/14/16
Control 8.04 8.05 7.98 8.09 8.15 8.05 Collection (Start) Date
Sample 1: 09/12/16 Sample 2: 09/14/16
Treatment 2 7.96 8.23 8.05 8.11 8.04 8.12 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 24.0 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 24.1 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 48
Control 7.90 7.44 7.58 7.31 7.58 6.90
-
Spec. Cond. (pmh.os) 174 592 569
Treatment 2 7.96 7.05 7.84 7.14 7.76 6.83
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 0.8 0.9
(Mortality expressed as 1, combining replicates)
Note: Please
% % % % % % % % I % Concentration Complete This
Section Also
I % % % % I % I I % Mortality
start/end start/end
LC50 = I Method of Determination Control
95% Confidence Limits Moving Average Probit
I -- % Spearman Karber - Other - High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

,.5p, r),, T
Effluent Toxicity Report Form - Chronic Pass/Fail Fail and Acute LC50 Date: 12/14/16
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performi T st: MERITECH LABS, INC.
X Affic,;01.t/, Comments:
Signature of rat in Responsible Charge
X
Signature of L oratory Supervisor * PASSED: -31.17% Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -8.096
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -31.17
% Mortality Avg.Reprod.
# Young Produced 17 20 24 23 20 21 22 20 20 18 22 20
- - - 0.00 20.58
Control Control 1
Adult (L)ive (D)ead L L L L L L L L L L L L
0.00 27.00
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
9.596% PASS FAIL
# Young Produced 30 26 27 28 24 26 25 26 27 26 30 29 % control orgs X
producing 3rd
brood Check One
Adult (L)ive (D)ead L L L L L L L L L L L L 100%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 12/07/16
Control 8.03 7.99 8.08 8.03 7.98 7.97 Collection (Start) Date
Sample 1: 12/05/16 Sample 2: 12/07/16
Treatment 2 8.13 8.41 8.21 8.31 8.04 8.30 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 24.1 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 24.6 hrs T P P
1st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 46
Control 7.99 7.93 8.03 7.64 7.62 7.98
Spec. Cond. (}imhos) 151 812 723
Treatment 2 8.36 7.94 8.10 7.43 7.71 7.96
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 0.6 1.0
(Mortality expressed as %, combining replicates)
Note: Please
% % % % % % % % % % Concentration Complete This
Section Also
% % % % % % % % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average Probit _
W -- % Spearman Barber - Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 03/13/15
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Xaboratpr�r in Test: MERITECH LABS, INC.
��,,{{//JJ ��''00110n Comments:
Signature o 0 e ator in Responsible Charge
X
;i:g4fture o Laboratory Supervisor * PASSED: -38.34$ Reduction *
Work Order: Environmental Sciences Branch
MAIL ORIGINAL TO: Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -4.309
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 $ Tabular t = 2.508 Reduction =-
-38.34
# Young Produced 18 28 22 12 22 25 20 26 11 24 27 18 $ Mortality Avg.Reprod.
0.00 21.08
Adult (L)ive (D)ead L L L L L L L L L L L L Control Control
0.00 29.17
Effluent $: 76% Treatment 2 Treatment 2
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
26.250% PASS FAIL
# Young Produced 30 30 28 33 28 32 21 28 32 29 33 26 $ control orgs X
producing 3rd
Adult (L)ive (D)ead L L L L L L L L L L L L brood
9l 7$ Check One
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 03/04/15
Control 8.10 8.12 8.05 8.05 7.94 7.94 Collection (Start) Date
Treatment 2 7.73 8.01 7.45 7.76 7.46 7.79 Sample 1: 03/02/15 , Sample 2: 03/04/15
ple Type/Duration 2nd
s 1st P/F
s
ts e s Grab Comp. Duration D
t e t e I S S
a n
a n a n Sample 1 X 23 .8 hrs L A A
r d r d r d U M M
t t t Sample 2 X 24.2 hrs T P P
1st sample 1st sample 2nd sample
D.O.
Control 7.58 8.22 8.35 8.15 7.76 7.86 Hardness(mg/1) 44
Treatment 2 8.08 8.22 8.80 8.33 8.47 7.98 Spec. Cond. (pmlios) 163 428 345
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 0.5 0.9
(Mortality expressed as $, combining replicates) I
$ $ $ $ $ $ $ $ % $ Concentration Note: Please
Complete This
$ $ $ $ $ $ % % $ $ Mortality Section Also
start/end start/end
LC50 = $ Method of Determination Control
95% Confidence Limits Moving Average Probit
$ -- $ Spearman Karber - Other - High
Conc.
IpH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 06/17/15
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laborator
y Performing es MERITECH LABS, INC.
Al k.
Comments:
Sign ure o erator in Responsible Charge
X .d' / :"2 .
Signature o ora y Supervisor * PASSED: -8.67% Re
duction *
Water Sciences Section -Aquatic mmimm
Work Order: Toxicology Branch
MAIL ORIGINAL TO:
Division of Water Resources
1623 Mail Service Center .621
North Carolina Ceriodaphnia Raleigh, N.C27699-1623
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = -1.335
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -8.67
# Young Produced 22 23 27 26 30 25 21 24 27 23 27 25 Mortality Avg.Reprod.
0.00 25.00
Adult (L)ive (D)ead L L L L L L L L L L L L Control Control
- 8.33 27.17
Effluent t: 76$ Treatment 2 Treatment 2
TREATMENT 2 )RGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
10.234% PASS FAIL
# Young Produced 30 26 34 31 27 18 28 17 30 30 27 28 % control orgs X
producing 3rd
Adult (L)ive (D)ead L L L L L D L L L L L L brood100% Check One
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 06/10/15
Control 8.12 8.08 7.94 8.06 8.01 8.07 Collection (Start) Date
Treatment 2 8.02 8.24 7.98 8.25 7.97 8.24 Sample 1: 06/08/15 Sample 2: 06/10/15
ple Type/Duration 2nd
s 1st P/F
s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 24 .1 hrs L A A
r d r d r d U M M
1t t t Sample 2 X 24.1 hrs T P P
st sample 1st sample 2nd sample
D.O. Hardness(mg/1) 46
Control 7.98 7.88 8 .28 7.77 8.18 8.08
Treatment 2 8.20 7.96 8.46 7.91 8.45 8.11 Spec. Cond. (pmYios) 180 661 621
Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt (°C) 0.5 0.4
(Mortality expressed as %, combining replicates) I
-
$ % % $ % Is $ % % % Concentration Co : Please
Complete This
$ % $ $ % % % $ % % Mortality Section Also
start/end start/end
LC50 = $ Method of Determination Control
95$ Confidence Limits Moving Average Probit
$ -- % Spearman Karber _ Other - High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

C?- 6::-4,/(/)
.b
Effluent Toxicity Report Fora - Chronic Pass/Fail and Acute LC50 Date 09/25/15
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratoryo Performin Tes M 'ITECH LABS, INC.
X / �,tri ` Comments:
Signature of Op rater in Response a ge
Signature of Laboratory Supervisor * PASSED: -5.39k Reduction *
Water Sciences Section .. Aquatic s:ommo
Work Order: Toxicology Branch
MAIL ORIGINAL TO:
Division of Water Resources
1623 Mail Service Center 621
North Carolina Ceriodaphnia Raleigh.N.C.27699-1622
Chronic Pass/Fail Reproduction Toxicity Test I Chronic Test Results
Calculated t = -1.415
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = -5.39
Mortality Avg.Reprod.
# Young Produced 24 29 30 29 27 30 27 26 28 26 30 28
0.00 27.83
Adult (L)ive (D)ead L L L L L I L L L L L L Control Control
0.00 29.33
Effluent *: 76% Treatment 2 Treatment 2
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
6.823% PASS FAIL
# Young Produced 26131l30 23 32 30 29 26 31 30 29 35 % control orgs X I
producing 3rd
Adult (L)ive (D)ead 1L L. L L L L L I I I I L brood Check One
i00%
pH 1st sample 1st sample 2nd sample Complete This For Either Test
Test Start :
Control 7.78 7.79 7.86 7.83 7.99 7.99 Collection Date(Start)9Date15
Sle 1. 09/14/15
Treatment 2 7.86 7.94 7.76 7.88 17.84 7.87 Sample Type/DurationSample 2: 09/16/15 2nd
1st P/F
S s S Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 23.9 hrs L A A
r d r d r d U M M
t t t Sample 2 X 24.0 hrs T P P
D.O. 1st sample 1st sample 2nd sample .......,.,
r Hardness(mg/1) I 42
Control 7.8517.67 17.88 8.04 18.02 7.86
Treatment 2 7.9217.59 I8.05 8.03 I.96 7.88 Spec. Cond. (gmhos) I 177 657 1653
Chlorine(mg/1) ,., ,,,,,, <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) ili iiiiii 0.7 0.4
(Mortality expressed as %, combining replicates) I
* * * *l % Note: Please
%( Concentration Complete This,
W1 % % % % %( % % % % Mortality Section Also
start/end ' start/end
LC50 = * Method of Determination Control
95% Confidence Limits Moving Average Probit
1 % -- % Spearman Karber _ Other - High
1
Conc.
pH D.O.
iOrganism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT- i 1 (3/87) rev. li/95 (DUBIA ver. 4.41)

Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 12/09/15
Facility: WARRENTON WWTP NPDES#: NC0020834 Pipe#: 001 County: WARREN
Laboratory Performing Test: MERITECH LABS, INC.
Comments: PLEASE COUNT AS
X
Signature of 0 rator in Responsible Charge DECEMBER TEST.
X .e-ek
Signature aboratory Supervisor * PASSED: 8.30% Reduction *
Water Sciences Section -Aquatic IINN
Work Order: Toxicology Branch
MAIL ORIGINAL TO:
Division of Water Resources
1623 Mail Service Center 621
North Carolina Ceriodaphnia Raleigh.N.C. 27699-1623
Chronic Pass/Fail Reproduction Toxicity Test Chronic Test Results
Calculated t = 1.811
Tabular t = 2.508
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 % Reduction = 8.30
% Mortality Avg.Reprod.
# Young Produced 20 20 23 23 22 19 19 21 14 23 16 21
0.00 20.08
Control Control
Adult (L)ive (D)ead L L L L L L L L L L L L
0.00 18.42
Treatment 2 Treatment 2
Effluent %: 76%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12 Control CV
13 .996% PASS FAIL
# Young Produced 18 18 17 18 19 21 17 20 18 17 17 21 % control orgs X
producing 3rd
brood Check One
Adult (L) ive (D)ead L L L L L L L L L L L L 91.7%
1st sample 1st sample 2nd sample Complete This For Either Test
pH Test Start Date: 12/02/15
Control 7.99 8.07 8.26 8.02 8.02 7.99 Collection (Start) Date
Sample 1: 11/30/15 Sample 2: 12/02/15
Treatment 2 8.21 8.39 8.26 8.35 8.14 8.33 Sample Type/Duration 2nd
1st P/F
s s s Grab Comp. Duration D
t e t e t e I S S
a n a n a n Sample 1 X 24.2 hrs L A A
✓ d r d r d U M M
t t t Sample 2 X 23 .9 hrs T P P
1st sample 1st sample 2nd sample
D.O. - Hardness(mg/1) 41
Control 7.99 7.69 7.76 7.87 7.94 8.13
Spec. Cond. (prnhos) 154 692 601
Treatment 2 8.39 7.84 8.09 7.90 8.34 8.20 Chlorine(mg/1) <0.1 <0.1
LC50/Acute Toxicity Test Sample temp. at receipt(°C) 0.7 1.1
(Mortality expressed as %, combining replicates)
Note: Please
% % % % % % % % % % Concentration Complete This
Section Also
% % % % % % % , % % % Mortality
start/end start/end
LC50 = % Method of Determination Control
95% Confidence Limits Moving Average _ Probit
% -- % Spearman Karber _ Other High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs) :
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41) 1

r
TOWN OF WARRENTON
MERCURY MINIMIZATION EFFORTS
The Town of Warrenton implemented a Mercury Minimization Plan (MMP) in order to identify
possible sources of mercury into the wastewater system and,if needed,to reduce levels of mercury
entering the system. The Town operates a publicly owned treatment works (POTW), including a
collection system and wastewater treatment plant(WWTP),which serves the Towns of Warrenton,
Norlina and Soul City,North Carolina.
- The WWTP operates under NPDES #NC0020834. The permit has quarterly monitoring
requirement for mercury. These results indicate that mercury is not a compliance issue at
the WWTP.
- The laboratory at the WWTP was surveyed to ascertain if any mercury containing solutions
were used and would be a possible source of mercury into the WWTP. SDS sheets and
container labels were reviewed. The results of this review show no sources of mercury
from the wastewater laboratory.
- There are four dental offices that discharge to the wastewater collection system. The Town
has had discussions with these offices regarding proper handling and collection of possible
mercury containing wastes. All the dental offices have ADA approved amalgam
separators.
- The Town plans to distribute educational information regarding sources of household
mercury and appropriate use/disposal practices on the website.