NC0020648_Permit (Issuance)_20160708

NPDES DOCUHENT SCANNING COVER :SHEET
NPDES Permit:
NC0020648
Washington WWTP
Document Type: /'
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Staff Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 8, 2016
This document is printed on reuise paper - igniore any
content on the reNrerse side

PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Secretary
Water Resources S. JAY ZIMMERMAN
ENVIRONMENTAL QUALITY
July 8, 2016
Mr. Stephen Adam Waters II, Water Resources Superintendent
City of Washington
P. O. Box 1988
Washington, North Carolina 27889
Subject: NPDES Permit Issuance,
Permit NC0020648
City of Washington Regional WWTP
Beaufort County
Facility Class IV
Dear Mr. Waters:
Director
Division personnel have reviewed and approved your application for a renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued .
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S. Environmental Protection Agency dated October
15, 2007 (or as subsequently amended).
The following changes have been incorporated into this renewal:
• The monitoring frequency for BOD, TSS, Fecal Coliform, and Ammonia Nitrogen was
reduced from Daily to 2/week based on the Monitoring Frequency Reduction Evaluation.
• . The Following special conditions were added to the permit to assure compliance with the
nutrient limits: A. (3.) Calculation of Total Nitrogen or Total Phosphorus Loads, A. (4.)
Annual Limits for Total Nitrogen or Total Phosphorus, A. (5.) Nutrient Allocations.
• Starting December 21, 2016, federal regulations require electronic submittal of all discharge
monitoring reports (DMRs) and specify that, if a state does not establish a system to receive
such submittals, then permittees must submit DMRs electronically to the Environmental
Protection Agency (EPA). The final NPDES Electronic Reporting Rule was adopted and
became effective on December 21, 2015.
The requirement to begin reporting discharge monitoring data electronically using the NC
DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been
added to your final NPDES permit. (Please see A. (8)) For information on eDMR,
registering for eDMR and obtaining an eDMR user account, please visit the following web
page:
State of North Carolina I Environmental Quality I Water Resources
1617 Mail service Center I Raleigh, North Carolina 27699-1611
919 707 9000

http: //deq.nc.gov/about/clivisions/water-resources/edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the
following web site:
http: / /www2.epa.gov/coimpliance./final-national-pollutant-discharge-elimination-system-
npdes-electronic-reporting-rule.
• The Total Nitrogen load and the Total Phosphorus load limits were added to the permit in
accordance with the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the office of
Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless
such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of Water
Resources. The Division may require modification or revocation and reissuance of the permit. This
permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Resources, the Division of Energy, Mineral, and Land Resources, the Coastal
Area Management Act, or any other federal or local governmental permit.
If you have any questions on this permit, please contact Sergei Chernikov at 919-807-6386.
Sincerely,
oim
Jay Zimmerman, P.G.
(Director, Division of Water Resources
cc: Central Files
NPDES Files
Washington Regional Office / Water Quality
EPA Region IV (e-copy)
WSS/Aquatic Toxicology Unit (e-copy) •
WSS/Ecosystem Branch/Monitoring Coalition Coordinator (e-copy)

Permit No. NC0020648
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and regulations
promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water
Pollution Control Act, as amended, the
City of Washington
is hereby authorized to discharge wastewater from a facility located at the
City of Washington WWTP
1399 West 2nd Street
Washington
Beaufort County
to receiving waters designated as the Tar River in the Tar -Pamlico River Basin in accordance with effluent limitations,
monitoring requirements, and other applicable conditions set forth in Parts I, II, III and N hereof.
This permit shall become effective August 1, 2016. •
This permit and authorization to discharge shall expire on November 30, 2019.
Signed this day July 8, 2016.
ay Zimmerman P.G., Director
/ Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 11

Permit No. NC002064&
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this
permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
City of Washington
is hereby authorized to:
1. Continue to operate an existing 3.65 MGD wastewater treatment facility located off Second Street, Washington,
Beaufort County, and consisting of:
• Influent metering vault
• Mechanical bar screen
• Automatic aerated grit chamber
• Splitter box
• Aeration basin
• Activated sludge oxidation ditch
• Four secondary clarifiers with scum removal and pumped sludge return
• Five cell deep -bed denitrification sand filters with a methanol storage/feed system
• Dual chlorine contact chambers with flow paced sodium hypochlorite feed
• Sodium bisulfate dechlorination
• Reaeration Basin
• Lime storage tower
• Caustic soda and polymer feed system
• Sludge mixing tank with lime addition
• Four sludge thickening lagoons
• Recirculation pump and decant draw off
• 60,000 gallon mud well
• Sludge recirculation pump station
• Effluent pump station
• Effluent diffuser
2. Discharge from said treatment works, through outfall 001, into the Tar River, a Class C-NSW water in the Tar -
Pamlico River Basin, at the location specified on the attached map.
Page 2 of 11

Permit No. NC0020648
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Beginning on the effective, date of this permit and lasting permit expiration, the Permittee is authorized to discharge
treated wastewater from Outfall 001. Such discharges shall be limited and monitored6 by the Permittee as specified
below:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
_Average
Weekly
Average
Daily
Maximum
•Measurement
Frequency
Sample Type
Sample
Location 1
Flow (MGD)
3.65
Continuous
Recording
Influent or
Effluent
Total Monthly Flow (MG)
Monitor & Report
MonthlyRecorded
or
Calculated
Influent or
Effluent
BOD5 2
13.1 mg/L
19.6 mg/L
2/Weeks
Composite
Influent &
Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
2/Weeks
Composite
Effluent
NH3 as N
3.5 mg/L
10.5 mg/L
2/Weeks
Composite
Effluent
Dissolved Oxygen .
Daily average not less than 5.0 mg/L
Daily .
Grab
Effluent
Fecal Coliform
(geometric mean) .
200/100 mL
400/100 mL
2/Weeks
Grab
Effluent
Total Residual Chlorine3
•
28.0 pg/L
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent
pH
Between 6.0 and 9.0 Standard Units
Daily
Grab
Effluent
Conductivity
Daily
• Grab
Effluent
Total Nitrogen
(NO2+NO3+7
Monitor and Report (mg/L)
Weekly
Composite
Effluent
Total Kjeldahl Nitrogen
)
Monitor and Report (mg/L) •
Weekly
Composite
Effluent.
Nitrite/Nitrate Nitrogen
(NO2-N+NO3-N)
Monitor and Report (mg/L)
Weekly
Composite
Effluent
Total Phosphorus
Monitor and Report (mg/L)
Weekly
Composite
Effluent
Total Copper (µg/L)
. Monthly
Composite
Effluent
Total Zinc (pg/L)
Monthly
Composite
Effluent
Total Nitrogen (IN) Load7
Monitor and Report, pounds/month
52,054 pounds/year8
Monthly
Annually
Calculated
Effluent
Total Phosphorus (TP)
Load7
Monitor and Report, pounds/month
9,407 pounds/year8 - - .
Monthly
Annually
Calculated
Effluent
Acute Toxicity 4
Quarterly .
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
see A. (7.)
see A. (7.)
Effluent
Footnotes:
1. See condition A. (2) of this pemnit for instream monitoring requirements.
2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
3. The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance with this permit.
However, you shall continue to record and submit all values reported by a North Carolina certified laboratory
(including field certified), even if these values fall below 50 µg/L.
Page 3 of11

Permit No. NC0020648
4. Acute Toxicity (Pimephalesprome/a) @ 90%, February, May, August and November [see A. (6)].
5. The sampling shall be conducted on any two non-consecutive days during the calendar week.
6. No later than December 21, 2016, begin submitting Discharge Monitoring Reports electronically using NC
DWR's eDMR application system [see A. (8)].
7. TN or TP Load is the mass quantity of Total Nitrogen or Total Phosphorus discharged in a given period of time
[see A. (3)].
8. Compliance with mass limits shall be determined in accordance with condition A. (4).
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM IN OTHER THAN TRACE AMOUNTS.
A. (2) 1NSTREAM MONITORING REQUIREMENTS
[15A NCAC 02B .0500 et seq.]
Instream monitoring is required for the following parameters at the locations specified:
PARAMETER
Measurement
Frequency
Sample Type
Fecal Coliform
June -September
3/week
October -May
1/week
Grab
Sample
Locationl
U, D
Dissolved Oxygen
June -September
3/week
October -May
1/week
Grab
U, D
Temperature
June -September
3/week •
October -May
1 /week
Grab
U, D
Conductivity
June -September
3/week
October -May
1 /week
Grab
U,D
Footnotes:
1. U - Upstream at Grimesland Bridge. D- Downstream at NC Highway 17.
Due to the membership in the Tar -Pamlico Basin Association, instream monitoring required by this permit is
provisionally waived. Should your membership in the Association be terminated, you shall notify the Division
immediately and the instream monitoring requirements specified in your permit shall be reinstated.
A. (3) CALCULATION .OF TOTAL NITROGEN AND TOTAL PHOSPHORUS LOADS
[G.S.143-215.1(b)]
(a.) The Permittee shall calculate monthly and annual TN Loads as follows:
Monthly TN (or TP) Load (pounds/month) = TN (or TP) x TMF x 8.34
where:
TN or TP = the average Total Nitrogen or Total Phosphorus concentration (mg/L) of
the composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/month)
8.34 = conversion factor, from (mg/L x MG) to pounds
Page 4 of 11

Permit No. NC0020648
(ii.) Annual TN (or TP) Load (pounds/year) = Sum of the 12 Monthly TN (br TP) Loads for the calendar
year
(b.) The Permittee shall report monthly Total Nitrogen and Total Phosphorus results (mg/L and pounds/month) in
the appropriate discharge monitoring report for each month and shall report each calendar year's results
(pounds/year) with the December report for that year.
A. 4 ANNUAL LIMITS FOR TOTAL NITROGEN OR TOTAL PHOSPHORUS
[G.S.142-125.1(b)1
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and loadlimits for NPDES dischargers in the Tar -
Pamlico River basin are annual limits and apply on a calendar year basis.
For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP) Load limit in this
Permit if
(i.) the Permittee's annual TN (or TP) Load is less than or equal to the effective limit, or
•
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) If the Permittee is not a co-permittee member of a compliance association and the Permittee's cumulative
annual TN (or TP) discharge exceeds the effective TN (or TP) Load limit in this permit at any point during the
calendar year, the Permittee is in violation of its TN (or TP) Load limit for the remainder of the calendar year,
and each day of continuing violation shall constitute a separate violation. Compliance with annual limits shall be
determined separately for each calendar year, and' an exceedance in one year does not carry forward to
subsequent years.
(d.) The TN (or TP) Load limit in this Permit (if any) may be modified as the result of allowable changes in the
Permittee's allocations.
Allowable changes include those resulting from purchase of TN (or TP) allocation from an authorized
mitigation banker, the Ecosystem Enhancement Program, or other source allowed under applicable
regulations; purchase, sale, trade, or lease of allocation between the Permittee and other dischargers; and
other transactions approved by the Division and consistent with the Tar -Pamlico River Basin Association
Agreement, as revised.
The Permittee may request a modification of the TN (or TP) Load limit in this Permit to reflect allowable
changes in its allocation(s). Upon receipt of timely and proper application, the Division will modify the
permit as appropriate and in accordance with state and federal program requirements.
(iii.) Changes in TN (or TP) limits become effective on January 1 of the year following permit modification.
The Division must receive application no later than August 31 for changes proposed for the following
calendar year.
(iv.) Application shall be sent to:
NCDWR / Wastewater Permits Section
Attn: Tar -Pamlico River Basin Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617.
(e.) If the Permittee is a member and co-permittee of an approved compliance association on January 1 of a given
Year, its TN and TP discharges during that year are governed by that association's group NPDES permit and
the limits therein.
The Permittee shall be considered a Co-Permittee Member for any given calendar year in which it is
identified as such in Appendix A of the association's group NPDES permit
Association roster(s) and members' TN and TP allocations will be updated annually and in accordance
with state and federal program requirements.
(b)
(i.)
(i.)
Page 5 of 11

(f.)
Permit No. NC0020648
(iv.) If the Permittee intends to join or leave a compliance association, the Division must be notified of the
proposed action in accordance with the procedures defined in the association's NPDES permit
(A.) Upon receipt of timely and proper notification, the Division will modify the permit as appropriate
and in accordance with state and federal program requirements.
Membership changes in a compliance association become effective on January 1 of the year
following modification of the association's permit
The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout the term of
the Permit and are not affected by the Permittee's membership in a compliance association.
_ A. (5.) NUTRIENT ALLOCATIONS
[G.S.143-125.1(b)]
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations represent the maximum TN and TP loads that a
discharger or group of dischargers is potentially allowed under the Tar -Pamlico nutrient management strategy.
Allocations are not enforceable limits but are the basis for TN and TP limits established in individual or group
NPDES permits.
(b.) The allocations originally assigned to the Tar -Pamlico Basin Association members total 891,271 pounds/year
•
(404,274 kg/year) TN and 161,070 pounds/year (73,060 kg/year) TP. These group allocations have been
divided among the members in proportion to the maximum permitted flow in each member's permit; that is,
(11)
Individual Allocation (IN or TP) = Individual Permitted Flow (MGD) x
Group Allocation, TPBA (IN or TP)
(c.)
Total Permitted Flow, TPBA (MGD)
For the purposes of this distribution, individual permitted flows for the Association members are those in
effect as of July 2014 and result in a Total Permitted Flow of 62.495 MGD.
The following table lists, for information purposes only, the TN and TP allocations assigned to, acquired by, or
transferred to the Permittee in accordance with the Tar -Pamlico River Basin Phase IV Agreement. Applicable
'IN or TP limits are established in the Effluent Limitations conditions of this permit or in the NPDES permit
of a compliance association of which the Permittee is a Co-Permittee Member.
ALLOCATION
TYPE
Total Nitrogen
SOURCE
Tar -Pamlico River
Basin Phase IV
Agreement
DATE
7/9/2015
ALLOCATION AMOUNT (1)
pounds/year)
52,054
(kg/year)
23,611
STATUS
Active
Total
Phosphorus
Tar -Pamlico River
Basin Phase IV
Agreement
7/9/2015
9,407
4,267
Active
(d.) Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical errors) or
any change from Reserve to Active status of any of the listed allocations shall be considered a major
modification of this permit and shall be subject to the public review process afforded such modifications under
state and federal rules.
Page 6 of 11

Permit No. NC0020648
A. (6) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols. defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology for Determining Acute
To idtyinaSingle
le Effluent
aa Fathead Minnow
Concentration" (Revised -July, 1992 or subsequent versions). The monitoring performed
(Pimephales prome/as) 24 hour static test. The effluent concentration at which there may be at no time significant acute
mortality is 90% (defined as treatment two in the procedure document). Effluent samples for self -monitoring
purposes must be obtained during representative effluent discharge below all waste treatment. The tests will be
performed during the months of February, May,'August and November.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE6C. Additionally,
DWR Form AT-2 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later -than 30 days. after. the
end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemicallphysical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent icty
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the
permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the fay
ty
name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow"
he
comment area of the form. The report shall be submitted to the Water Sciences Section at the address cited above.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin
immediately until such time that.a single test is passed. Upon passing, this monthly test requirement will revert to
quarterlyin the months specified above. Should the permittee fail to monitor during a month in which toxicity
monitoring is required, then monthly monitoring will begin immediately until such time that a single test is passed.
Upon passing, this monthly test requirement will revert to quarterly in'the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of
Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up
testing to be completed no later than the last'day of the month following the month of the initial monitoring.
Pagel of11

Permit No. NC0020648
A. (7) EFFLUENT POLLUTANT SCAN
P.S. 143-215.1 (b)]
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan must
be performed in each of the following years: 2017, 2018, and 2019. Analytical methods shall be in accordance with 40
CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present in concentrations greater
than applicable standards and criteria. Samples should be collected with one quarterly toxicity test each year, and must
represent seasonal variation [i.e., do not sample in the same quarter every year]. Unless otherwise indicated, metals shall
be analyzed as "total recoverable."
Ammonia (as N) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether
Chlorine (total residual, TRC) 1,1-dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus Methyl chloride 4-chlorophenyl phenyl ether
Total dissolved solids Methylene chloride Chrysene
Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate
Antimony Tetrachloroethylene Di-n-octyl phthalate
Arsenic Toluene Dibenzo(a,h)anthracene
Beryllium 1,1,1-trichloroethane 1,2-dichlorobenzene
Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene
Chromium Trichloroethylene 1,4-dichlorobenzene
Copper Vinyl chloride 3,3-dichlorobenzidine
Lead Acid -extractable compounds: Diethyl phthalate
Mercury (EPA Method 1631E) P-chloro-m-cresol Dimethyl phthalate
Nickel 2-chlorophenol 2,4-dinitrotoluene
Selenium 2,4-dichlorophenol 2,6-dinitrotoluene
Silver 2,4-dirnethylphenol 1,2-diphenylhydrazine
Thallium 4,6-dinitro-o-cresol Fluoranthene
Zinc 2,4-dinitrophenol Fluorene
Cyanide 2-nitrophenol Hexachlorobenzene
Total phenolic compounds 4-nitrophenol Hexachlorobutadiene
Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene
• Acrolein Phenol - Hexachloroethane
Acrylonitrile 2,4,6-trichlorophenol Indeno(1,2,3-cd)pyrene
Benzene Base -neutral compounds: Isophorone
Bromoform Acenaphthene Naphthalene
Carbon tetrachloride Acenaphthylene Nitrobenzene
Chlorobenzene Anthracene N-nitrosodi-n-propylamine
Chlorodibromomethane Benzidine N-nitrosodimethylamine
Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine
2-chloroethylvinyl ether Benzo(a)pyrene Phenanthrene
Chloroform 3,4 benzofluoranthene Pyrene
Dichlorobromomethane Benzo(ghi)perylene 1,2,4-trichlorobenzene
1,1-dichloroeth'ane Benzo(k)fluoranthene
1,2-dichloroethane Bis (2-chloroethoxy) methane
Reporting. Test results shall be reported on DWR Form -A MR-PPA1 (or in a form approved by the Director) by
December 31st of each designated sampling year. The report shall be submitted to the following address: NC DEQ /
DWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Page 8 of 11

Permit No. NC0020648
Additional Toxicity Testing Requirements for Municipal Permit Renewals. Please note that Municipal facilities
that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional toxicity testing
requirements specified in Federal Regulation 40 CFR 122.21(j)(5). The US EPA requires four (4) toxicity tests for a
,test organism other than the test species currently required in this permit The multiple species tests should be
conducted either quarterly for a 12-month period prior to submittal of the permit renewal application, or four tests
performed at least annually in the four and one half year, period prior to the application. These tests shall be
performed for acute or chronic toxicity, whicheveris specified in this permit. The multiple species toxicity test results
shall be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional toxicity
tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of EPA
Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting Unit
A. (8) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports and
specify that, if a state does not establish a system to receive such submittals, then permittees must submit monitoring
data and reports electronically to the Environmental Protection Agency (EPA). The final NPDES Electronic
Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2) and Section E. (5.) (a)1
Effective December 21, 2016, the permittee shall report discharge monitoring data electronically using the NC
DWR's Electronic Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all
discharge monitoring data too the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to
the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Page.9 of 11

Permit No. NC0020648
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring
data may be submitted on paper DMR forms (MR 1,1.1, 2, 3) or alternative forms approved by the Director.
Duplicate signed copies shall be submitted to the mailing address above. See "How to Request a Waiver from
Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of
the permit or in the case of a new facility, on the last day of the month following the commencement of
discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring •
data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from
Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time of each
electronic submission. The. permittee should use the EPA's website resources to identify the initial recipient for
the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or the
state authorized by EPA to implement the NPDES program) that is the designated entity for receiving electronic
NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of
electronic submission and for each state. Instructions on how to access and use the appropriate electronic
reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at:
http: / /www2.epa.gov /compliance/ final-national-pollu tart-discharge-elimination-system-npdes-electronic-
reporting-rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporti g
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic
reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division. Requests -
for temporary electronic reporting waivers must be submitted in writing to the Division for written approval at
least sixty (60) days prior to the date the facility would-be required under this permit to begin submitting
monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon
expire. At such time, monitoring data and reports shall be submitted electronically to the Division unless the
permittee re -applies for and is granted a new temporary electronic reporting waiver by the Division. Approved
electronic reporting waivers are not transferrable. Only perm,ittees with an approved reporting waiver request
may submit monitoring data and reports on paper to the Division for the period that the approved reporting
waiver request is effective.
Page 10 of 11

Permit No. NC0020648
Information on eDMR and the application for a temporary electronic reporting waiver are found on the following
web page:
http://deq.nc.gov/about/divisions /water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)]
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B.
(11)(a) or by a duly authorized representative of that person as described in Part II, Section B. (11)(b). A person,
and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please visit the following web page:
http: / /deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following
certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
"I certYy, under pena4 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 orpersons who manage the system, or those persons directly responsible forgathering the information, the information
submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are signjficant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
5. Records Retention [Supplements Section D. (6.)]
The. permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may
be extended by request of the Director at any time [40 CFR 122.41].
Page 11 of 11

Outfall001
° O
.6d10 Tpwers
(WRRF) ; �'•• = -
•
NC0020648
City of Washington WWTP
USGS Quad: Washington, N.C.
8-Digit HUC: 03020103
Receiving Stream: Tar River
Stream Class: C-NSW
Latitude: 35° 35' 54"
Longitude: 77° 04' 21"
River Basin: Tar -Pamlico
Sub -Basin: 03-03-07
ifiliRg .
1
JVQ
(C)
.
Foul ' ` % \
t4 •‘ �� C� Grandpap 4
Area \'11,404 (a)
4 ` Grove (C)
\
Solt (C)
3
Facility
Location
*Piling
ti
0
Bright (C) . 4ti IA (C)
1
• t'�%
°CV ,4•
Beaufort County
Map not to scale

M i Hi f aoffitmih/dtrAh-ktAffi iitil
Chernikov, Sergei
From: Adam Waters <[e-mail]>
Sent: Wednesday, February 24, 2016 9:02 AM
To: Chernikov, Sergei
Cc: Hope Woolard; Frankie Buck
Subject: Draft NPDES Permit NC0020648
Mr. Chernikov,
The City of Washington is in receipt of the Draft Permit NC0020648. After review, the only comments we offer are the
following;
Page 2 of 10 —1 bullet 9 describes "Dual chlorine contact chambers with flow paced gaseous chlorine feed". This should
be "Dual chlorine contact chambers with flow paced sodium hypochlorite feed".
Page 2 of 10 —1 bullet 10 describes "Sulfur dioxide dechlorination". This should be "Sodium bisulfite dechlorination".
Aside from those two items, the draft permit looks good. The City appreciates the State's assistance in this process and
looks forward to the working with you in the future.
nciaHr �ateps
Water Resources Superintendent
City of Washington
[e-mail]
1

i'EhIaw'7,0t
AFFP
PUBLIC NOTICE North Carolina E
Affidavit of Publication
STATE OF NC} SS
COUNTY OF BEAUFORT }
Ann Taylor, being duly sworn, says:
That he is an employee in the Classified Department of
the Pub WDN, a daily newspaper of general circulation,
printed and published in Washington, Beaufort County,
NC; that the publication, a copy of which is attached
hereto, was published in the said newspaper on the
January 28, 2016
That said newspaper was regularly issued and circulated
on those dates.
SIGNED:
autk. da)L._ CIA
an employee in the Classifie Department
Subscribed to and sworn to me this 28th day of January
2016.
Amy M Whi
ker, Notary Public, Beaufort County, NC
My commission expires: August 25, 2018
00006744 00011104 919.807.6489
Wren Thedford
NCDENR-Division of Water Resources
1617 Mail Service Center
RALEIGH, NC 27699-1617
PUBLIC NOTICE North Carolina Environmental Management
Commission/NPDES Unit 1617 Mali Service Center Raleigh, NC 27699-1617 Notice
of Intent to Issue a NPDES Wastewater Permit The North Carolina Environmental
Management Commission proposes to issue a NPDES wastewater discharge permit
to the person(s) listed below. Written comments regarding the proposed permit will
be accepted until 30 days after the publish date of this notice. The Director of the NC
Division of Water Resources (DWR) may hold a public hearing should there be a
significant degree of public interest. Please mail comments and/or information
requests to DWR at the above address. Interested persons may visit the DWR at
512 N. Salisbury Street, Raleigh, NC to review information on file. Additional
information on NPDES permits and this notice may be found on our website:
http:l/portal.ncdenr.org/web/wq/swp/ps/npdeslcalendar, or by calling (919) 807-
6304. The City of Washington requested renewal of permit NC0020648 for
Washington WWTP in Washington County. This facility discharge is treated
municipal wastewater to Tar River, Tar -Pamlico River Basin.
1/28 1tc

DEQ/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0020648
Facility Information
Applicant/Facility
Name:
City of Washington
Applicant Address:
Facility Address:
Permitted Flow (MGD):
Type of Waste:
Facility Classification:
Permit Status:
P.O. Box 1988, Washington, NC 27889
1399 West 2nd Street, Washington, NC 27889
3.65
99% Domestic <1% Industrial
IV
Renewal
County:
Beaufort
Miscellaneous
Receiving Stream:
Tar River
Stream index
28-(102.5)
Stream Classification:
C-NSW
Regional Office:
Washington
303(d) Listed?
TMDL?
Yes (chlorophyll a)
Yes
State Grid / USGS
Quad:
Permit Writer:
E3OSE/Washington
Sergei Chernikov, Ph.D.
Basin/Subbasin:
Tar -Pam / 030307
Date:
January 7, 2016
Drainage Area (mi2):
Summer 7Q10 (cfs)
Tidal
Tidal
Winter 7Q10 (cfs):
Tidal
30Q2 (cfs)
Tidal
Average Flow (cfs):
IWC (%):
Tidal
100
Lat. 35° 32' 54" N Long. 77° 04' 21" lei
SUMMARY
The City of Washington submitted a permit renewal application to the Division on May 28, 2014. The
city has a permit for reuse of treated effluent (WQ0019179). They reuse an average of 211 gallons per
day on land near the wastewater plant. Additionally, they participate as a member in the Tar -Pamlico
River Basin Association.
The city has an approved pretreatment program with 2 SIUs. These are Stanadyne Automotive, with a
process wastewater flow of 3,087 GPD, and Flanders Filters Inc., with a process wastewater flow of 18,149
GPD. The permit will require the facility to continue implementation of the pre-treatment program.
Since the City of Washington is a member of the Tar Pamlico Nutrient Trading Association, their permit
includes nutrient limits. The required language relating to nutrient limits has been added to the permit.
NUTRIENT CONTROLS
History of Nutrient Management Strategy for Point Sources
On September 12, 1989, the Environmental Managements Commission classified the Tar -Pamlico River
Basin as Nutrient Sensitive Waters (NSW). On February 13, 1992, the Commission approved a revised
Page 1 of 4

NSW Implementation Strategy that established the framework for a nutrient reduction trading program
between point and nonpoint sources of pollution. The Strategy also established certain conditions to be
met by an association of dischargers known as the Tar -Pamlico Basin Association (the Association).
Those conditions are defined in the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy (the
"Agreement"). Information on the evolution of the program and past and present versions of the
Agreement are available at http://portal.ncdenr.org/web/wq/ps/nps/tarpampointsource.
Addition of Nutrient Limits
In 2009, the U.S. EPA Region 4 offices raised concerns that, although the Agreement set collective
nutrient caps for the members of the Tar -Pamlico Basin Association, the members' NPDES permits
lacked nutrient limits and, as a result, EPA had no means to enforce nutrient controls should it become
necessary. As part of the 2009 permit renewals, the Division added the group caps for nitrogen and
phosphorus, along with related special conditions, to the permits of the fifteen TPBA member facilities.
The Division could not add individual N and P limits at that time, because no basis existed at the time
for dividing the available wasteload allocations among the members. Instead, the Division agreed to
work with the Association to determine an appropriate distribution and to then add individual N and P
limits to the permits as part of the 2014 renewals.
With the consent of the Association, the group caps are distributed among the members in proportion
to their 2014 maximum permitted flows, as follows:
TPBA Members and Nutrient Allocations/ Limits
Permit
Owner
Facility
TN
Load
(1b/yr)
TP
Load
(1b/yr)
NC0030317
City of Rocky Mount
Tar River Regional WWTP
299,491
54,124
NC0023931
Greenville Utilities Commission
GUC WWTP
249,576
45,103
NC0020605
Town of Tarboro
Tarboro WWTP
71,307
12,887
NC0025054
City of Oxford
Oxford WWTP
49,915
9,021
NC0020648
City of Washington
Washington WWTP
52,054
9,407
NC0069311
Franklin County
Franklin County WWTP
42,784
7,732
NC0020834
Town of Warrenton
Warrenton WWTP
28,523
5,155
NC0026042
Town of Robersonville
Robersonville WWTP
25,671
4,639
NC0020231
Town of Louisburg
Louisburg WWTP
19,538
3,531
NC0026492
Town of Belhaven
Belhaven WWTP
14,261
2,577
NC0025402
Town of Enfield
Enfield WWTP
14,261
2,577
NC0023337
Town of Scotland Neck
Scotland Neck WWTP
9,626
1,740
NC0020061
Town of Spring Hope
Spring Hope WWTP
5,705
1,031
NC0042269
Town of Bunn
Bunn WWTP
4,278
773
NC0020435
Town of Pinetops
Pinetops WWTP
4,278
773
Given the size and characteristics of the river basin, transport losses were judged to be somewhat
uniform across the basin and were not considered in these calculations. Thus, nutrient limits equal the
nutrient allocations for each facility, unlike in other nutrient management strategies in the state.
The draft permit includes new conditions designed to meet the Division's 2009 commitment. The group
caps and related conditions have been deleted and replaced with individual N and P limits and a new set
of related special conditions.
The nutrient limits are annual mass limits and become effective January 1, 2016. Each members' limits
are equivalent to approximately 4.7 mg/L TN and 0.85 mg/L TP for the member's full permitted flow.
The special conditions document the N and P allocations assigned to the facility and provide for
consistent calculation of nutrient loads by all members. They also establish how compliance with the N
Page 2 of 4

and P limits will be determined if the Association members apply for and obtain a group NPDES permit
to control their nutrient discharges collectively. The members have indicated they plan to apply for such
a permit, and the Division initiated discussions with the members on that approach in 2012.
MONITORING FREQUENCY REDUCTION EVALUATION
The effluent was evaluated in accordance with the Monitoring Frequency Reduction Review Guidance.
The facility has met the requirements of the guidance for TSS, BOD, Fecal Coliforms, and Ammonia
Nitrogen. Therefore, monitoring for these parameters will be reduced from Daily to 2/Week. Evaluation
is attached.
REASONABLE POTENTIAL ANALYSIS (RPA)
The Division conducted EPA -recommended analyses to determine the reasonable potential for
toxicants to be discharged at levels exceeding water quality standards/EPA criteria by this facility from
outfall 001. For the purposes of the RPA, the background concentrations for all parameters were
assumed to be below detections level. The RPA uses 95% probability level and 95% confidence basis in
accordance with the EPA Guidance entitled "Technical Support Document for Water Quality -based
Toxics Control."
The long term discharge data on the EPA Form 2C and DMR data was used in the analysis. Calculations
included: As, Be, Cd, Total Phenolic Compounds, Cr, Cu, CN, Pb, Hg, Ni, Se, Ag, Zn, Sb and Tl (please
see attached). Based on the RPA, no limits are necessary.
MERCURY EVALUATION
The State of North Carolina has a state-wide mercury impairment. The TMDL has been developed to
address this issue in 2012. The TMDL included the implementation strategy, both documents were
approved by EPA in 2012.
The mercury evaluation was conducted in accordance with the Permitting Guidelines for Statewide
LVJ. L .may A.ivi 't .
Year
2010
2011
2012
2013
Annual average
concentration (ng/L)
1
1.1
<1
<1
Maximum sampling
result (ng/L)
1
1.1
<1
<1
Allowable mercury concentration for this tac. lv aiu� ��..��u� ua� ��.� •• concentration. Therefore, Therefore, based on the Permitting Guidelines for Statewide Mercury TMDL, the Mercury
WQBEL and the Mercury Minimization Plan are not required.
TOXICITY TESTING
Current Requirement: Outfall 001 — Acute P/F @ 90% using Pimephales promelas
Recommended Requirement: Outfall 001— Acute P/F @ 90% using Pimephales prvmelas
This facility has passed 23 of 23 quarters, please see attached.
COMPLIANCE SUMMARY
During the last 5 years, the facility has not violated any permit limits, please see attached.
PERMIT LIMITS DEVELOPMENT
• BOD limits in the permit are based on the water quality model.
• TSS limits in the permit are based on the requirements of the 40 CFR 133.102. and 15A NCAC
2B .0406
Page 3 of 4

• The Ammonia limits in the permit are based on the water quality model. The Division uses
ammonia criteria that were developed by EPA: 1 mg/L - summer; 1.8 mg/L — winter.
• The pH limits in the permit are based on the requirements of the 15A NCAC 2B .0200.
• The Fecal Coliforms limits in the permit are based on the requirements of the 15A NCAC 2B
.0211.
• The TRC limit in the permit is based on the requirements of the 15A NCAC 2B .0211.
• The Whole Effluent Toxicity limit is based on the requirements of the 15A NCAC 2B .0500.
• The Total Nitrogen load and the Total Phosphorus load are established in accordance with the
Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy.
PROPOSED CHANGES
• The monitoring frequency for BOD, TSS, Fecal Coliform, and Ammonia Nitrogen was reduced
from Daily to 2/week based on the Monitoring Frequency Reduction Evaluation.
• The Following special conditions were added to the permit to assure compliance with the nutrient
limits: A. (3.) Calculation of Total Nitrogen or Total Phosphorus Load, A. (4.) Annual Limits for
Total Nitrogen or Total Phosphorus, A. (5.) Nutrient Allocations.
• Starting December 21, 2016, federal regulations require electronic submittal of all discharge
monitoring reports (DMRs) and specify that, if a state does not establish a system to receive such
submittals, then permittees must submit DMRs electronically to the Environmental Protection
Agency (EPA). The final NPDES Electronic Reporting Rule was adopted and became effective
on December 21, 2015.
The requirement to begin reporting discharge monitoring data electronically using the NC
DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been added to
your final NPDES permit. (Please see A. (8.)) For information on eDMR, registering for eDMR
and obtaining an eDMR user account, please visit the following web page:
http: / /deq.nc.gov /about/divisions /water -resources / edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the
following web site:
http:/ /www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-system-npdes-
electronic-rep orting-rule.
• The Total Nitrogen load and the Total Phosphorus load limits were added to the permit in
•accordance with the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Permit Scheduled to Issue:
January 26, 2016
March 21, 2016
NPDES Contact
If you have questions regarding any of the above information or on the attached permit, please contact
Sergei Chernikov at [phone].
Page 4 of 4

'City of Washington
NC0020648
Qw (MGD) = 3.65
1Q10S(cfs)= 0.00
7Q1 OS (cfs) = 0.00
7Q 1 OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: Tar River
2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: IV
IWC @ 1Q1OS = ##;tom###
IWC @ 7QIOS = #####
IWC @ 7Q10W = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ;! #########
Stream Class: C NSW
Outfall 001
Qw=3.65MGD
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
PQL
UNITS
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied ' FAV /
Chronic Standard Acute
Max Pred
n # Det. Cw Allowable Cw
Arsenic
Arsenic
C
C
50 FW
10 HH/WS
uilL
ug/L
4 0
Note: n < 9
Limited data se
4 0
Note: n <9
2.5
Default C.V.
2.5
Dcfault C.V.
Acute: NO WQS
_ _ _____ ____
Chronic: 50.0
N_ o value > Allowable Cw
Chronic: 10.0
No value > Allowable Cw
no limit
_________ _ _ _ _______
— _ _ _ _ _ _ _ _ _ _ _ _ _
Beryllium
NC
6.5 FW
ue/L
4 0
\otc: n < 9
Limited data set
0.5
Default C.V.
Acute: NO WQS
_ _ _____ ___
Chronic: 6.5
No value> Allowable Cw
no limit
—____________________
Cadmium
NC
2 FW 15
uv./L
4 0
Note: n < 9
Limited data set
0.5
Default C.V.
Acute: 15.0
__ _ _____ ____
Chronic: 2.0
No value> Allowable Cw
no limit
_________________________
Chlorides (AL)
NC
230 PW
mgll.
0 0
N/A
Acute: NO WQS
_-
_ ----_----------------------------
Chronic: 230
n/a
--
Chlorinated Phenolic Compounds
NC
1 A
ug/L
0 0
N/A
Acute: NO WQS
_ _ _
Chronic------1.0 ---
nia
----------------------------
Total Phenolic Compounds
NC
300 A
ug/L
4 0
Note: n < 9
Limited data set
6.5
Default C.V.
Acute: NO WQS
_ _____ _ __
Chronic: 300.0
No value> Allowable Cw
no limit
_____________________
Chromium
NC
50 FW 1022
ug/L
4 0
Note: n < 9
Limited data set
2.5
Default C.V.
Acute: 1,022.0
_ _ _ _____ ____
Chronic: 50.0
No value> Allowable Cw
no limit
___________________________
Copper(AL)
NC
FW 7.3
ug/L
58 26
4.0
Acute: 7.3
_ ______ _____
Chronic: 7.0
No value > Allowable Cw
no limit
_ _ _ _ _ ___________ _
Action Level Standard
Cyanide
NC
$ I \V 22
10
ug/L
4 0
Note: n <9
limited data set
5.0
I)cI iult C.V.
Acute: 22.0
Chronic: 5.0
No value > Allowable Cw
no limit
all values are below detect
Page 1 of 2
20648-RPA-2015, rpa
1/14/2016

City of Washington
NC0020648
2014 Freshwater RPA - 95% Probability/95% Confidence
Outfall 001
Qw = 3.65 MGD
Fluoride
NC
1800 FW
us/L
0 0
N/A
Acute: NO WQS
_ _ _ _ _ _
1,800.0 �—�-
ChroniAcute:
nia
------ ----------------------
Lead
NC
25 FW 33.8
uJL.
4 0
Note: n < 9
Limited data set
2.5
Default C.V.
33.8
__ _ _ _____ ____
Chronic: 25.0
No value> Allowable Cw
no limit
_________________ _________
Mercury
NC
12 FW
0.5
ng/L
4 3
Note: n <_ 9
Limited data set
2.8
Dcfault C.V.
Acute: NO WQS
_ _____ ____
Chronic: 12.0
No value > Allowable C\\•
no limit
____________________________
Molybdenum
NC
2000 1IFI
u,il.
0 0
N/A
Acute: NO WQS
_ --- _ _ _
Chronic: 2,000.0
n/a
-----------------
Nickel
NC
88 FW 261
ug/L
4 4
Note: n < 9
Limited data set
• 5.0
Default C.V.
Acute: 261.0
_ _ ___ __--
Chronic: 88.0
No value> Allowable Cw
no limit
_------------__--_—_---_---.
Selenium
NC
5 FW 56
ug/L
4 0
Note: n < 9
Limited data scl
5.0
Default C.V.
Acute: 56.0
_ _ _____ ____
Chronic: 5.0
No value> Allowable Cw
no limit
_ _ _ _ _ _ _ ___ _________
all values are below detect
Silver(AL)
NC
0.06 FW 1.23
un/L
4 0
Note: n < 9
Limited data set
2.500
Default C.V.
Acute: 1.230
_ _____ _ __
Chronic: 0.060
4 value(s) > Allowable Cw
no limit
___________________________
Action Level Standard
Thallium
NC
0.47 1-11-1
µg/L
4 0
Note: n < 9
Limited data set
0.50000
Default C.V.
Acute: NO WQS
__ _ _____ _ __
Chronic: 0.47000
4 value(s)> Allowable Cw
no limit
____________________________
all values are below detect
Antimony
NC
640 1-111
µ-/L
4 0
Note: n < 9
Limited data set
1.50000
Default C.V.
Acute: NO WQS
_ _ ___ _ _ __
Chronic: 640.00000
No value> Allowable Cw
no limit
___________________________
Zinc (AL)
NC
50 1111 67
µg/L
55 55
48.48000
Acute: 67.00000
_ _ _ ___ _ _ _-
Chronic: 50.00000
No value> Allowable Cw
no limit
---------------------------
0 0
N/A
Acute:
--------------------------------------
Chronic:
Page 2 of 2
20648-RPA-2015, rpa
1/14/2016 i.

REASONABLE POTENTIAL ANALYSIS
1
Arsenic - FW Standard
Date Data BDL=1/2DL Results
1 < 5 2.5 Std Dev.
2 < 5 2.5 Mean
3 < 5 2.5 C.V.
4 < 5 2.5 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
2
Arsenic - HHIWS Standards
0.0000
2.5000
0.0000
4
1.00
2.5 ug/L
2.5 ug/L
Automatically copies
Arsenic data from FIN
Standard entries
Date Data BDL=1/2DL Results
1 1/0/1900 < 5 2.5 Std Dev. 0.0000
2 1/0/1900 < 5 2.5 Mean 2.5000
3 1/0/1900 < 5 2.5 C.V. 0.0000
4 1/0/1900 < 5 2.5 n 4
5
6 Mult Factor = 1.00
7 Max. Value 2.5 ug/L
8 Max. Pred Cw 2.5 ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
20648-RPA-2015, data
- 1 - 1/14/2016

REASONABLE POTENTIAL ANALYSIS
3
Beryllium
Date Data BDL=1/2DL Results
1 < 1 0.5 Std Dev.
2 1 0.5 Mean
3 1 0.5 C.V.
4 1 0.5 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
4
Cadmium
0.0000
0.5000
0.0000
4
1.00
0.5 ug/L
0.5 ug/L
Date Data BDL=1/2DL Results
1 < 1 0.5 Std Dev.
2 < 1 0.5 Mean
3 < 1 0.5 C.V.
4 < 1 0.5 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
0.0000
0.5000
0.0000
4
1.00
0.5 ug/L
0.5 ug/L
-2-
20648-RPA-2015, data
1/14/2016

REASONABLE POTENTIAL ANALYSIS
7
Total Phenolic Compounds
Date Data BDL=I/2DL Results
1 < 5 2.5 Std Dev.
2 < 5 2.5 Mean
3 < 2 1 C.V. (default)
4 < 2 1 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
8
Chromium
0.8660
1.7500
0.6000
4
2.59
2.5 ug/L
6.5 ug/L
Date Data BDL=1/2DL Results
1 < 5 2.5 Std Dev.
2 < 5 2.5 Mean
3 < 5 2.5 C.V.
4 < 5 2.5 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
0 0000
2.5000
0.0000
4
1.00
2.5 ug/L
2.5 ug/L
20648-RPA-2015, data
- 3 - 1/14/2016

REASONABLE POTENTIAL ANALYSIS
9
Copper (AL)
Date Data BDL=1/2DL Results
1 < 2 1 Std Dev.
2 < 2 1 Mean
3 < 2 1 C.V.
4 < 2 1 n
5 < 2 1
6 < 2 1 Mutt Factor =
7 < 2 1 Max. Value
8 < 2 1 Max. Pred Cw
9 < 2 1
10 < 2 1
11 < 2 1
12 < 2 1
13 < 2 1
14 < 2 1
15 < 2 1
16 < 2 1
17 < 2 1
18 < 2 1
19 < 2 1
20 < 2 1
21 < 2 1
22 < 2 1
23 < 2 1
24 < 2 1
25 < 2 1
26 < 2 1
27 < 2 1
28 < 2 1
29 < 2 1
30 < 2 1
31 < 2 1
32 < 2 1
33 3 3
34 3 3
35 3 3
36 3 3
37 3 3
38 3 3
39 3 3
40 3 3
41 3 3
42 3 3
43 3 3
44 3 3
45 3 3
46 3 3
47 3 3
48 4 4
49 4 4
50 4 4
51 4 4
52 4 4
53 4 4
54 4 4
55 4 4
56 4 4
57 4 4
58 4 4
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
10
Cyanide
1.2605
2.0862
0.6042
58
1.00
4.0 ug/L
4.0 ug/L
Date Data BDL=1/2DL Results
1 < 5 5.0 Std Dev.
2 < 5 5.0 Mean
3 < 5 5.0 C.V.
4 < 5 5.0 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY-
. Maximum data
points = 58
0.0000
5.00
0.0000
4
1.00
5.0 ug/L
5.0 ug/L
-4-
20648•RPA-2015, data
1/14/2016

REASONABLE POTENTIAL ANALYSIS
12
Lead
Date Data BDL=1/2DL Results
1 < 5 2.5 Std Dev.
2 < 5 2.5 Mean
3 < 5 2.5 C.V.
4 < 5 2.5 n
5
6 MuIt Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use ''PASTE SPECIAL
Values" [hen "COPY"
. Maximum data
points = 58
13
Mercury
0.0000
2.5000
0.0000
4
1.00
2.5 ug/L
2.5 uglL
Date Data BDL=1/2DL Results
1 < 1 0.5 Std Dev.
2 1 1 Mean
3 1.1 1.1 C.V. (default)
4 1 1 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE SPECIAL
Values" than "COPY"
. Maximum data
points = 58
0.2708
0.9000
0.6000
4
2.59
1.1 ng/L
2.8 ng/L
20648-RPA-2015, data
- 5 - 1/14/2016

REASONABLE POTENTIAL ANALYSIS
15
Nickel
Date Data BDL=1/2DL Results
1 < 10.0 5 Std Dev.
2 < 10.0 5 Mean
3 < 10.0 5 C.V.
4 < 10.0 5 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 59
16
Selenium
Use "PASTE SF
Values" then "1
. Maximum t
points =
Date Data BDL=1/2DL Results
0.0000 1 < 10 5 Std Dev. 0.0000
5.0000 2 < 10.0 5 Mean 5.0000
0.0000 3 < 10.0 5 C.V. 0.0000
4 4 < 10.0 5 n 4
5
1.00 6 Mult Factor = 1.00
5.0 ug/L 7 Max. Value 5.0
5.0 ug/L 8 Max. Pred Cw 5.0
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
- 6 -
20648-RPA-2015, data
1/14/2016

REASONABLE POTENTIAL ANALYSIS
17
Silver (AL)
Date Data BDL=1/2DL Results
1 < 5 2.5 Std Dev.
2 < 5.0 2.5 Mean
3 < 5.0 2.5 C.V.
4 < 5.0 2.5 n
5
6 Mult Factor =
ug/L 7 Max. Value
ug/L 8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
18
Zinc (AL)
0.0000
2.5000
0.0000
4
1.00
2.500 ug/L
2.500 ug/L
Use "PASTE SF
Values' then "t
. Maximum i
points ='
Date Data BDL=1/2DL Results
1 47 Std Dev. NO DATA
2 48 Mean NO DATA
3 48 C.V. NO DATA
4 19 n 0
5 20
6 27 Mult Factor = N/A
7 28 Max. Value N/A
8 28 Max. Pred Cw N/A
9 29
10 29
11 29
12 29
13 29
14 30
15 32
16 32
17 33
18 33
19 34
20 34
21 34
22 34
23 34
24 35
25 35
26 35
27 36
28 36
29 36
30 37
31 37
32 37
33 37
34 37
35 38
36 38
37 38
38 39
39 39
40 39
41 39
42 40
43 41
44 41
45 41
46 41
47 42
48 42
49 43
50 43
51 44
52 44
53 44
54 46
55 46
56
57
58
20648-RPA-2015, data
- 7 - 1/14/2016

REASONABLE POTENTIAL ANALYSIS
/ECIAL
GOPY"
tale
19
Thallium
Date Data BDL=1/2DL Results
1 < 1 0.5 Std Dev.
2 < 1 0.5 Mean
3 < 1 0.5 C.V.
4 < 1 0.5 n
5
6 Mult Factor =
ug/L 7 Max. Value
ug/L 8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
20
Antimony
0.0000
0.5000
0.0000
4
1.00
0.500000 pg/L
0.500000 Ng/L
Date Data BDL=1/2DL Results
1 < 3 1.5 Std Dev.
2 < 3 1.5 Mean
3 < 3 1.5 C.V.
4 < 3 1.5 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
-8-
20648-RPA-2015, data
1/14/2016

REASONABLE POTENTIAL ANALYSIS
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
Points = 58
21
Zinc (AL)
0.0000
1.5000
0.0000
4
1.00
1.500000 pg/L
1.500000 pg/L
Date Data BDL=1/2DL Results
1 47 47 Std Dev.
2 48 48 Mean
3 48 48 C.V.
4 19 19 n
5 20 20
6 27 27 Mult Factor =
7 28 28 Max. Value
8 28 28 Max. Pred Cw
9 29 29
10 29 29
11 29 29
12 29 29
13 29 29
14 30 30
15 32 32
16 32 32
17 33 33
18 33 33
19 34 34
20 34 34
21 34 34
22 34 34
23 34 34
24 35 35
25 35 35
26 35 35
27 36 36
28 36 36
29 36 36
30 37 37
31 37 37
32 37 37
33 37 37
34 37 37
35 38 38
36 38 38
37 38 38
38 39 39
39 39 39
40 39 39
41 39 39
42 40 40
43 41 41
44 41 41
45 41 41
46 41 41
47 42 42
48 42 42
49 43 43
50 43 43
51 44 44
52 44 44
53 44 44
54 46 46
55 46 46
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
Points = 58
22
0
6.4344
36.4727
0.1764
55
1.01
48.000000 pg/L
48.480000 Ng/L
Date Data BDL=1/2DL
20648-RPA-2015, data
- 9 - 1/14/2016

REASONABLE POTENTIAL ANALYSIS
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
NO DATA
NO DATA
NO DATA
0
N/A
N/A
N/A
- 10 -
20648-RPA-2015, data
1/14/2016

lot
W
Templeton, Mike
From: Belnick, Tom
Sent: Monday, March 09, 2015 1:51 PM
To: Templeton, Mike; Hennessy, John
Cc: Risgaard, Jon
Subject: RE: action on tar-pam permits
Since we did not have any kickoff for this basin, it might be good to put a note in the permit files to remind permit
writers to not start renewals until Ph 4 completed. Drafts can go to public notice without the Supervisor review.
Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: Templeton, Mike
Sent: Monday, March 09, 2015 11:20 AM
To: Hennessy, John
Cc: Belnick, Tom; Risgaard, Jon
Subject: action on tar-pam permits
John —
You, Tom, and I decided a few months ago that it would be best to delay action on permits for the 15 Association
members until the Phase IV agreement is worked out; we would then add nutrient limits and get those permits going.
We also agreed that the rest of the Tar -Pam permits could go out any time.
I saw last week that draft permits for two members of the Tar -Pam Association went out to public notice in mid -
February: Scotland Neck, NC0023337, and Spring Hope, NC0020061.
We will have to come back and modify these permits when the agreement is finalized, to add the new nutrient
conditions. The mods will require a second public notice at some cost to us. The three of us decided to hold these 15
permits precisely to avoid the added expense, though we knew it would temporarily add to the backlog. This was a
branch -level decision, not a unit decision.
In addition, it has taken a good deal of effort over several years to get the Tar -Pam dischargers on board with the new
requirements. It does not help our credibility that, after John Huisman and I (with a nod from you and Tom) told them
we would delay their renewals, these two drafts went to notice.
I'd be glad to talk to you and Tom further if we need to revisit this decision, but until a different decision is made please
continue to hold the permits for Tar -Pam Association members.
- Mike T
Michael E. Templeton, P.E.
Wastewater Branch
Water Quality Permitting Section
NCDENR DWR Raleigh, NC
Tel: [phone]
Fax: [phone]
E-Mail correspondence to and from this address may be subject to the -North Carolina Public Records Law and may be disclosed to third parties. •
1/1

11fFFR{�I <1oIy
SOC PRIORITY PROJECT: No
To: Water Quality Permitting Section
Wastewater Branch, NPDES Permitting
Attention: Sergei Chernikov
Date: July 1, 2014
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Beaufort
NPDES Permit No.: NC0020648
PART I - GENERAL INFORMATION
1. Facility and address: City of Washington Regional WWTP
PO Box 1988
Washington, NC 27889
2. Date of investigation: June 17, 2014
3. Report prepared by: Scott Vinson, Environmental Engineer
RECEIVEDJDENRJDWR
JUL - 3 2014
Water Quality
Permitting Section
4. Person contacted and telephone number: Mr. S. Adam Waters, II, Water Resources
Superintendent [phone]
5. Directions to site: The facility is located at 1399 West 21'd Street, Washington, in
Beaufort County, North Carolina.
6. Discharge point(s), list for all discharge points: (BIMS needs updating)
Outfall 001
Latitude: 35° 32' 42" N
Longitude: 77° 04' 32.9" W
Attach a USGS Map Extract. (attached)
USGS Quad map: Washington, NC
7. Receiving stream or affected surface waters: Tar River
a. Classification and Stream Index No. : C; NSW, 28-(102.5)
b. River Basin and Subbasin No.: Tar -Pamlico, 03-03-07
c. Describe receiving stream features and pertinent downstream uses: At the outfall,
the Tar River is classified and used as secondary recreation such as boating, jet
skiing and other uses involving human body contact, aquatic life including
propagation and for the use of fishing to include fish consumption.

Page Two
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater: daily average flow 1.91 MGD
b. What is the current permitted capacity: 3.65 MDG
c. Actual treatment capacity of current facility (current design capacity): 3.65 MGD
d. Description of existing or substantially constructed WWT facilities:
• Influent metering vault
• Dual Mechanical bar screen
• Automatic aerated grit chamber
• Splitter box
• Aeration Basin
• Dual Activated sludge oxidation ditch
• Four secondary clarifiers with scum removal and pumped sludge
return
• Five cell deep -bed denitrification sand filters with methanol
storage/feed system
• Dual chlorine contact chambers with flow paced Sodium
Hypochlorite
• Sodium Bisulfite dechlorination
• Reaeration Basin
• Lime Storage tower
• Polymer feed system (no longer uses Caustic soda)
• Sludge mixing tank with lime addition
• Four sludge thickening lagoons
• Recirculation pump and decant draw off
• 60,000 gallon mud well
• Sludge recirculation pump station
• Effluent pump station
• Effluent diffuser
(Revisions to previous permit are noted in bold print above.)
e. Description of proposed WWT facilities: None were proposed to inspectors on
June 17, 2014 other than the changes or minor corrections listed above to the plant
description that have already taken place.
f. Possible toxic impacts to surface waters: City of Washington WWTP poses no
apparent toxic impacts to surface waters.
PART III - OTHER PERTINENT INFORMATION
1. Special monitoring or limitations (including toxicity) requests: The facility has requested
a reduction of monitoring frequency for exceptional performance. The Washington
Regional Office supports the request in a reduction of monitoring frequency.
2. Compliance: The facility is in compliance with the permit.

PART IV - EVALUATION AND RECOMMENDATIONS
City of Washington WWTP is operating within it's permit conditions and limits. The City of
Washington has requested the renewal of Permit No. NC0020648 and the Washington Regional
Office recommends renewing the permit.
Signature of Report Preparer
Date/y
-7/4
Water Quality Regional Supervisor Date

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Re -60v 44FIl
City of Washington
P. O. Box 1988, Washington, NC 27889-1988
May 23, 2014
NCDENR Division of Water Quality
Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: NPDES Permit Renewal Amendment
Permit No. NC0020648
Washington Regional Wastewater Treatment System
To whom it may concern,
RECEIVED/DENR/DWR
MAY 28 2014
Water Resources
Permitting Section
The City of Washington is requesting renewal of its existing NPDES permit number
#NC0020648 of 3.65 MGD for treated wastewater discharge to the Tar River at
Washington, North Carolina. Enclosed please find one original signed permit application
packet and two copies of the same packet.
The City of Washington would also like to request a reduction in monitoring frequencies
for exceptionally performing facilities. The justifications for this request are listed below;
The facility has had no civil penalty assessments for permit limit violations in the
past three years,
No employees have been convicted of criminal violations of The Clean Water Act
in the past five years,
- The facility is not currently under any SOC's,
The facility is not on EPA's quarterly Noncompliance Report for any parameter,
The three year arithmetic mean for BOD5, NH3-N and TSS are all less than 50%
of the monthly average permit limit, and the geometric for fecal coliform is less
than 50% of the monthly average permit limit,
- For the three year review period, no BOD5, NH3-N or TSS samples have been
200% of the monthly average,
- For the three year review period, only 5 fecal samples have been over 200% the
weekly average limit,
Washington NPDES Renewal 2014 (NC0020648)
102 E. Second St. • Telephone [phone] TDD 1.800-735.2962 • Fax [phone]

The City of Washington has had no non -monthly average limit violations during
the previous year,
The reduced effluent monitoring, if granted, will not affect how the City of
Washington continues to operate the wastewater system, and should have no
effect on impair assessment.
Thank you in advance for your consideration with this permit renewal and reduction of
monitoring frequencies request. If you have any questions about the information in this
packet, please do not hesitate to call me at 252-975-9310.
Respectfully Submitted
/4-CO:N---.
IL),,,,i-
Adam Waters
Water Resources Superintendent
City of Washington
Cc File
Allen Lewis
Enclosure
Washington NPDES Renewal 2014 (NC0020648)

FACILITY NAME AND PERMIT NUMBER:
City of Washington Regional Wastewater
Treatment Plant, NC0020648
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Tar -Pam
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA,
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
(E Yes ❑ No
F.2. Number of Significant Industrial Users (Sills) and Categorical Industrial Users (ClUs). Provide the number
industrial users that discharge to the treatment works.
a. Number of non -categorical SlUs. 1
or other remedial wastes must
of each of the following types of
questions F.3 through F.8 and
b. Number of CIUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Flanders Filters Inc
Mailing Address: 531 Flanders Filters Road
Washington, NC 27889
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Manufacture HEPA air filter media and filter units
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): HEPA filters
Raw material(s): fiberglass, sulfuric acid metals, wood and urethane
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the
day (gpd) and whether the discharge is continuous or intermittent.
18,149 gpd ( continuous or ves intermittent)
collection system in gallons per
into the collection system
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
none gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes D No
b. Categorical pretreatment standards 0 Yes II No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
City of Washington Regional Wastewater
Treatment Plant, NC0020648
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Tar -Pam
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
0 Yes ® No If yes, describe each episode.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3.
F.4.
F.5.
F.6.
F.7.
F.8.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Stanadyne Automotive
Mailing Address: P.O. Box 1105
Washington, NC 27889
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Manufacture, assemble and test diesel fuel injection equipment
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Fuel filters and fuel injectors
Raw material(s): Aluminum ingot, Filter paper, powder metals and glass
Flow Rate.
c. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
3,087 gpd ( continuous or ves intermittent)
d. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
15,539 gpd (yes continuous or intermittent)
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes 0 No
b. Categorical pretreatment standards 0 Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
0 Yes ® No If yes, describe each episode.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 19 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Washington Regional Wastewater
Treatment Plant, NC0020648
Renewal
Tar -Pam
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION!CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a.Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 20 of 22

Property Boundary Maps
Map one shows the Wastewater Treatment Plant property outlined in black. Ebb and flow are
also indicated on the map for the Tar River and Kennedy Creek.
Map two shows the Wastewater Treatment Plant property shaded in black. The outfall
discharge point is marked with a red dot and labeled outfall 001.
Map three shows the contours around the plant structures.
Washington NPDES Renewal 2014 (NC0020648)

THIS MAP IS FOR ILLUSTRATION PURPOSES ONLY.
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Plant Layout
This drawing represents the plant layout with all of the plant structures as well as the force
mains entering the plant along with the plants outfall shown. The plants generator is shown on
this drawing and is located just below and left of clarifier 1. This drawing is not to scale.
Washington NPDES Renewal 2014 (NC0020648)

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Liquids and Solids flow Schematic
This drawing represents the liquid and solids flow through the plant. Pipe sizes are indicated on
the drawing. The average day flow for 2013 was 1.91 MGD at both the influent and effluent
ends of the plant. Of this an estimated 0.76 MGD flowed through Oxidation Ditch 2 and
Clarifier 4. An estimated 1.15 MGD flowed through Oxidation Ditch 1 and 0.38 MGD flowed
through Clarifiers 1, 2 and 3 each. The flows recombined ahead of the filters and each of the 5
filters received and estimated 0.38 MGD. The waste then flowed to a dual cell chlorine contact
chamber where each cell received approximately 0.96 MGD. This drawing is not to scale.
Washington NPDES Renewal 2014 (NC0020648)

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Sludge Management
Sludge is thickened in the sludge thickening tanks and stored in the sludge lagoons. Sludge
stabilization takes place in the sludge storage lagoons. Sludge is land applies under land
application permit # WQ0001026. Lime stabilization and final land application is contracted.
Stephen Adam Waters II
Washington NPDES Renewal 2014 (NC0020648)