NC0021253_Permit Issuance_20140417

NPDES DOCIMENT SCANNING COVER :SHEET
NPDES Permit:
NC0021253
Havelock WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
April 17, 2014
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AwA
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
April 17, 2014
James W. Freeman
City Manager.
City of Havelock
P.O. Box 368
Havelock, NC 28532
Subject: Issuance of NPDES Permit
Permit NC0021253
Havelock WWTP
Craven County
Class IV
Dear Mr. Freeman:
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached NPDES 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).
Summary of Changes in Final Permit
1) In accordance with US EPA approved October 2012 Mercury TMDL:
- Total mercury quarterly monitoring using Method 1631E was added.
- Special condition A.(14) Mercury Minimization Plan was added. Plan must be completed
by December 1, 2014.
2) Footnote # 1 and special condition A. (13) Electronic Reporting of Discharge Monitoring
Reports was added. Compliance with eDMR reporting is March 1, 2015 which reflects a
correction from the compliance date as defined in the draft.
3) Narrative updates to include latest instructions and reference documents was made to:
- Special condition A.(8) Chronic Toxicity Permit Limit (Qrtly).
- Special condition A.(9) Chronic Toxicity Permit Limit (Qrtly).
- Special condition A.(10) Effluent Pollutant Scan.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet www.ncwaterquaiity.org
An Equal OpportunitylAffirmative Action Employer

James W. Freeman, City Manager
April 17, 2014
Page 2 of 2
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 demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. 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
or permits required by the Division of Land Resources, the Coastal Area Management Act or any other
federal or local governmental permits that may be required.
If you have any questions concerning this permit, please contact Ron Berry at telephone
number [phone] or at email [e-mail].
Sincerely,
v�nomas A. Reeder, Director
/ Division of Water Resources, NCDENR
Attachments
Cc: Washington Regional Office/Water Quality Programs
EPA Region IV (email)
Email: [e-mail]
WSS/Aquatic Toxicology Branch/Susan Meadows (email)
WSS/Ecosystems Branch/Steve Kroeger (email)
WSS/Ecosystems Branch/Carrie Ruhlman (email)
Central Files
NPDES File

Permit NC0021253
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
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 Havelock
is hereby authorized to discharge wastewater from a facility located at the
Havelock WWTP
North Jackson Drive
Havelock
Craven County
to receiving waters designated as East Prong Slocum Creek in the Neuse River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective June 1, 2014.
This permit and the authorization to discharge shall expire at midnight on June 30, 2018.
Signed this day April 17, 2014.
s A. Reeder, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 17

Permit NC0021253
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge, are hereby revoked. [The
exclusive authority to operate this facility arises under this permit. The authority to operate the facility under
previously issued permits bearing this number is no longer effective.] The conditions, requirements, terms and
provisions of this permit authorizing discharge under the NPDES govern discharges from this facility.
City of Havelock
is hereby authorized to:
1. Continue to operate an existing 1.9 MGD wastewater treatment facility consisting of the
following components:
• Manual bar screen and grit removal systems
• Influent composite sampler
• Influent pump station
• Distribution box
• Two (2) 840.000 gallon first stage aeration basins with fine bubble aeration
• .Two (2)150,000 gallon second stage aeration basins with coarse bubble aeration
• One (1) 190.000 gallon second stage aeration basin with coarse bubble aeration
• Final clarifier pump station
• 7,500 gallon storage tank and chemical additive systems for polyaluminum chloride
• Distribution box
• Two (2) 65 feet diameter final clarifiers
• 7,500 gallon storage tank and chemical additive system for methanol
• Three (3) 7,500 ft3 multimedia denitrifying filters
• UV disinfection basin
• One (1) reaeration basin with dual mechanical agitation
• Denitrification filters backwash pumps
• One (1) filter backwash waste detention tank
• Effluent flow meter
• Effluent composite sampler
• One (1) waste solids holding tank
• Gravity belt thickener
• Solids stabilization tank, pumps, basin, lime addition system, truck loadout
This facility is located at North Jackson Drive, Havelock, in Craven County.
2. Upon approval of an Authorization to Construct to expand above 1.9 MGD to 2.25 MGD with
relocation of outfall 001 to Neuse river, and after submittal of the signed Engineering
Certificate, to operate a 2.25 MGD treatment facility with the following minimum additional
components:
• Upgraded UV disinfection system
• New effluent pump station with new force main
• New post gravity cascade aerator
• New 2,036 feet outfall pipe with 80 feet multiport diffuser
Page 2 of 17

Permit NC0021253
(CONTINUED SUPPLEMENT TO PERMIT COVER SHEET)
3. Upon approval of an Authorization to Construct to expand above 2.25 MGD to 2.8 MGD and
after submittal of the signed Engineering Certificate, to operate a 2.8 MGD treatment facility
with the following minimum additional components:
• New 570,000 gallon three -stage BNR treatment train
• New nitrification recycle pump station
• New final clarifier pump station and distribution box
4. Upon approval of an Authorization to Construct to expand above 2.8 MGD to 3.5 MGD and
after submittal of the signed Engineering Certificate, to operate a 3.5 MGD treatment facility
with the following minimum additional components:
• New manual bar screen
• New 180,000 gallon post -anoxic process train to increase BNR to five -stages
• New 65 feet diameter final clarifier
• New 7,500 ft3 multimedia denitrifying filter
• New solids storage and dewatering filters
5. Discharge from said treatment works through existing outfall 001 into East Prong Slocum
Creek, a Class C-Swamp NSW water in the Neuse River Basin, at the location specified on the
attached map. Discharge from said treatment works after expansion through relocated outfall
001 into the Neuse River, a Class SB-Swamp, NSW water in the Neuse River Basin, at the
location specified on the attached map.
Page 3 of 17

Permit NC0021253 '
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
a. Beginning on the effective date of this permit and lasting until expansion above 1.9 MGD or permit
expiration, the Permittee is authorized to discharge 1.9 MGD of treated municipal wastewater from
OutfaIl 001 into East Prong Slocum Creek. Such discharges shall be limited and monitored 1 by the
Permittee as specified below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 2
Flow (MGD)
1.9
Continuous
Recording
I or E
Total Monthly Flow (MG) 3
Monitor & Report
Monthly
Recorded or
Calculated
I or E
BOD5 3 (April 1— October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
I, E
BOD5 3 (November 1— March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I, E
Total Suspended Solids (TSS) 4
30.0 mg/L
45.0 mg/L
Daily
Composite
I, E
Ammonia as N (NH3- N)
(April 1— October 31)
0.5 mg/L
1.5 mg/L
Daily
Composite
E
Ammonia as N (NH3- N)
(November 1— March 31)
1.0 mg/L
3.0 mg/L
Daily
Composite
E
Dissolved Oxygen (DO)
Not less than 5.0 mg/L, daily average
Daily
Grab
E
Fecal Coliform (geometric mean)
200/100 mL
400/100 mL
Daily
Grab
E
pH
Not greater than 9.0 nor less than 6.0 S.U.
Daily
Grab
E
Temperature, °C
Daily
Grab
E
TKN 4 mg/L
Monitor & Report
Weekly
Composite
E
NO2-N + NO3-N 4, mg/L
Monitor & Report
Weekly
Composite
E
Total Nitrogen (TN) 318, mg/L
Monitor & Report
Weekly
Composite
E
TN Load 3
•Monitor and Report (II?/month)
21,400 Ib/yr b
Monthly
Annually
Calculated
E
Total Phosphorus
(April 1— October 31)
(November 1— March 31)
0.7 mg/L (quarterly average) 7
1.0 mg/L (quarterly average)'
Weekly
Composite
E
Total Copper, pg/L
Quarterly
Composite
E
Total Mercury (Method 1631E), ng/L
Quarterly
Grab
E
Total Zinc, pg/L
Quarterly
Composite
E
Chronic Toxicity 8
Quarterly
Composite
E
Effluent. Pollutant Scan
See A.(10)
E
Footnotes:
1. No later than March 1, 2015, begin submitting discharge monitoring reports electronically using NC DWR's
eDMR application system. See Special Condition A. (13) ELECTRONIC REPORTING OF DISCHARGE
MONITORING REPORTS.
2. I = Influent. E = Effluent. See special condition A. (5) (a) for instream monitoring requirements and conditional
waiver.
3. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (6) for
calculation and reporting requirements.
4. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
5. For a given wastewater sample, TN = TKN + (NO3-N + NO2-N), where TN is total nitrogen, TKN is total
Kjeldahl Nitrogen, and (NO3-N + NO2-N) are nitrate/nitrite nitrogen, respectively.
6. Compliance with this limit shall be determined in accordance with special condition A. (7).
Page 4 of 17

Permit NC0021253
(Continued A.(1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
7. The quarterly average for total phosphorus shall be the average of composite samples collected weekly during
each calendar. quarter (January - March, April - June, July - September, October - December).
8. Chronic Toxicity (Ceriodaphnia) ® 90% conducted in January, April, July and October; see special condition A. (8)
of this permit.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See special condition A.(12) if chlorine or a chlorine derivative is utilized.
A.(2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
a. Beginning upon expansion to 2.25 MGD and receipt of the signed Engineering Certificate, and
lasting until permit expiration or further expansion, the Permittee is authorized to discharge 2.25
MGD of treated municipal wastewater from Outfall 001 through a submerged multiport diffuser
into the Neuse River. Such discharges shall be limited and monitored by the Permittee as specified
below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 1
Flow (MGD)
2.25
Continuous
Recording
I or E
Total Monthly Flow (MG) 2
Monitor & Report
Monthly
Recorded or
Calculated
I or E
BODS 3 (April 1— October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
I, E
BODS 3 (November 1— March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I, E
Total Suspended Solids (TSS) 3
30.0 mg/L
45.0 mg/L
Daily
Composite
I, E
Ammonia as N (NH3- N)
1.0 mg/L
3.0 mg/L
Daily
Composite
E
Dissolved Oxygen (DO) •
Not less than 5.0 mg/L, daily average
Daily
Grab
E
Enterococci (geometric mean)
35/100 mL
276/100 mL
Daily
Grab
E
pH
Not greater than 9.0 nor less than 6.0 S.U.
Daily
Grab
E
Temperature, °C
Daily
Grab
E
TKN 4 mg/L
Monitor & Report
Weekly
Composite
E
NO2-N + NO3-N 4, mg/L
Monitor & Report
Weekly
Composite
E
Total Nitrogen (TN) 2,4, mg/L
Monitor & Report
Weekly
Composite
E
TN Load 2
Monitor and Report (lb/month)
21,400 Ib/yr s
Monthly
Annually
Calculated
E
Total Phosphorus (TP)
2.0 mg/L (quarterly average) 6
Weekly
Composite
E
Total Copper, pg/L
Quarterly
Composite
E
Total Mercury (Method 1631E), ng/L '
Quarterly
Grab
E
Total Zinc, pg/L
Quarterly
Composite
E
Chronic Toxicity 7
Quarterly
Composite
E
Effluent Pollutant Scan
See A.(10)
E
Footnotes:
1. I = Influent. E = Effluent. See special condition A.(5.)(b.) for instream monitoring requirements and conditional
waiver.
2. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (6) for
calculation and reporting requirements.
3. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
4. For a given wastewater sample, TN = TKN + (NO3-N + NOrN), where TN is total nitrogen, TKN is total
Kjeldahl Nitrogen, and (NO3-N + NO2-N) are nitrate/nitrite nitrogen, respectively.
5. Compliance with this limit shall be determined in accordance with special condition A. (7).
Page 5 of 17

Permit NC0021253
(Continued A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
6. TP quarterly limit is based on membership in the Lower Neuse Nutrient Compliance Association. Termination
of membership will automatically assign 1.0 mg/L as the TP monthly limit. The calendar quarters are January -
March, April June, July -September, and October -December.
7. Chronic Toxicity (Mysidopsis bahia) @ 15% conducted in January, April, July and October; see special condition A.
(9) of this permit.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See special condition A.(12) if chlorine or a chlorine derivative is utilized.
A.(3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
a. Beginning upon expansion to 2.8 MGD and receipt of the signed Engineering Certificate, and
lasting until permit expiration or further expansion, the Permittee is authorized to discharge 2.8
MGD of treated municipal wastewater from Outfall 001 through a submerged multiport diffuser
into the Neuse River. Such discharges shall be limited and monitored by the Permittee as specified
below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average.
Daily
Maximum
Measurement
Frequency
Sample
Type .
Sample
Location'
Flow (MGD)
2.8
Continuous
Recording
I or E
Total Monthly Flow (MG) 2
Monitor & Report
Monthly
Recorded or
Calculated
I or E
BOD5 3 (April 1— October 31)
5.0 mg/L
7.5 mg/L
Daily '
Composite
I, E
BOD53 (November 1— March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I, E
Total Suspended Solids (TSS) 3
30.0 mg/L
45.0 mg/L
Daily
Composite
I, E
Ammonia as N (NH3- N)
1.0 mg/L
3.0 mg/L
Daily
Composite
E
Dissolved Oxygen (DO)
Not less than 5.0 mg/L, daily average
Daily
Grab
E
Enterococci (geometric mean)
35/100 mL
276/100 mL
Daily
Grab
E
pH
Not greater than 8.5 nor Tess than 6.8 S.U.
Daily
Grab
E
Temperature, °C
Daily
Grab
E
TKN 4 mg/L
Monitor & Report
Weekly
Composite
E
NO2-N + NO3-N 4, mg/L
Monitor & Report
Weekly
Composite
E
Total Nitrogen (TN) 2,4, mg/L
Monitor & Report
Weekly
Composite
E
TN Load 2
Monitor and Report (lb/month)
21,400 Ib/yr 5
Monthly
Annually
Calculated
E
Total Phosphorus (TP)
2.0 mg/L (quarterly average) 6
Weekly
Composite
E
Total Copper, pg/L
Quarterly
Composite
E
Total Mercury (Method 1631E), ng/L
Quarterly
Grab
E
Total. Zinc, pg/L
Quarterly
Composite
E
Chronic Toxicity 7
Quarterly
Composite
E
Effluent Pollutant Scan
See A.(10)
E
Footnotes:
1. I = Influent. E = Effluent. See special condition A. (5) (b) for instream monitoring requirements and
conditional waiver.
2. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (6) for
calculation and reporting requirements.
3. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
Page 6 of 17

Permit NC0021253
(Continued A.(3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
4. For a given wastewater sample, TN = TKN + (NO3-N + NO2-N), where TN is total nitrogen, TKN is total
Kjeldahl Nitrogen, and (NO3-N + NO2-N) are nitrate/nitrite nitrogen, respectively.
5. Compliance with this limit shall be determined in accordance with special condition A. (7).
6. TP quarterly limit is based on membership in the Lower Neuse Nutrient Compliance Association.
Termination of membership will automatically assign 1.0 mg/L as the TP monthly limit. The calendar
quarters are January -March, April June, July -September, and October -December.
7. Chronic Toxicity (Mysidopsis bahia) @ 16% conducted in January, April, July, and October; see special condition
A. (9) of this permit.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See special condition A.(12) if chlorine or a chlorine derivative is utilized.
A.(4) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
a. Beginning upon expansion to 3.5 MGD and receipt of the signed Engineering Certificate, and
lasting until permit expiration, the Permittee is authorized to discharge 3.5 MGD of treated
municipal wastewater from Outfall 001 through a submerged multiport diffuser into the Neuse
River. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 1
Flow (MGD)
3.5
Continuous
Recording
I or E
Total Monthly Flow (MG) 2
Monitor & Report
Monthly
Recorded or Calculated
Calculated
or E
B0D5 3 (April 1— October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
I, E
B0D5 3 (November 1— March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I, E
Total Suspended Solids (TSS) 3
30.0 mg/L
45.0 mg/L
Daily
Composite
I, E
Ammonia as N (NH3- N)
1.0 mg/L
3.0 mg/L
Daily
Composite
E
Dissolved Oxygen (DO)
Not less than 5.0 mg/L, daily average
Daily
Grab
E
Enterococci (geometric mean)
35/100 mL
276/100 mL
Daily
Grab
E
pH
Not greater than 8.5 S.U. nor less than
6.8 S.U.
Daily
Grab
E
Temperature, °C
Daily
Grab
E
TKN 4 mg/L
Monitor & Report
Weekly
Composite
E
NO2-N + NO3-N 4, mg/L
Monitor & Report
Weekly
Composite
E
Total Nitrogen (TN) 2,4, mg/L
Monitor & Report
Weekly
Composite
E
TN Load 2
Monitor and Report (lb/month)
21,400 Ib/yr 5
Monthly
Annually
Calculated
E
Total Phosphorus (TP)
2.0 mg/L (quarterly average) 6
Weekly
Composite
E
Total Copper, pg/L
Quarterly
Composite
E
Total Mercury (Method 1631E), ng/L
Quarterly
Grab
E
Total Zinc, pg/L
Quarterly
Composite
E
Chronic Toxicity'
Quarterly
Composite
E
Effluent Pollutant Scan
See A. (10)
E
Footnotes:
1. I = Influent. E = Effluent. See special condition A. (5) (b) for instream monitoring requirements and
conditional waiver.
2. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (6) for
calculation and reporting requirements.
Page 7 of 17

Permit NC0021253
(Continued A.(4) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
3. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. For a given wastewater sample, TN = TKN + (NO3-N + NO2-N), where TN is total nitrogen, TKN is total
Kjeldahl Nitrogen, and (NO3-N + NO2-N) are nitrate/nitrite nitrogen, respectively.
5. Compliance with this limit shall be determined in accordance with special condition A. (7).
6. TP quarterly limit is based on membership in the Lower Neuse Nutrient Compliance Association.
Termination of membership will automatically assign 1.0 mg/L as the TP monthly limit. The calendar
quarters are January -March, April June, July -September, and October -December.
7. Chronic Toxicity (Mysidopsis bahia) @ 16% conducted in Januanj, April, July and October; see special condition
A. (9) of this permit.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See special condition A.(12) if chlorine or a chlorine derivative is utilized.
A.(5) INSTREAM MONITORING REQUIREMENTS
a. Instream monitoring is provisionally waived while discharging into East Prong Slocum Creek as
long as the Permittee continues to maintain membership and participation in the Lower Neuse
Basin Association. Should the Permittee end its participation in the Association then instream
monitoring is required for the following parameters and locations while discharging into East
Prong Slocum Creek:
EFFLUENT
CHARACTERISTICS
MEASUREMENT
FREQUENCY
SAMPLE
TYPE
SAMPLE
LOCATION 1
Fecal Coliform, #/100 mL
3/week
Grab
U, D
Dissolved Oxygen, mg/L
3/week
Grab
U, D
Temperature, °C
3/week
Grab
U, D
Footnote:
1. Instream monitoring shall be conducted at U and D locations defined by the Division.
b. Instream monitoring is required for the following parameters and locations while discharging via a
diffuser into the Neuse River. No provisional waiver is applicable:
S1 = upstream 10 feet (approximately 2,076 feet offshore, perpendicular to diffuser center);
S2 = downstream 10 feet (approximately 2,076 feet offshore, perpendicular to diffuser center);
S3 = within 10 feet beyond the end of the diffuser and in line with the diffuser.
EFFLUENT
CHARACTERISTICS
SAMPLE TYPE
MEASUREMENT FREQUENCY
Dissolved Oxygen, mg/L
Vertical
(1 meter increments)
Weekly
- (April — October)
Monthly
(November — March)
Temperature, °C
Vertical
(1 meter increments)
Weekly
(April — October)
Monthly
(November — March)
Salinity, ppt
Vertical
(1 meter increments)
Weekly
(April — October)
Monthly
(November — March)
—OH, S.U.
Vertical
(1 meter increments)
Weekly
(April — October)
N/A
Enterococci, #/100 mL
Surface
Weekly
(April — October)
Monthly
(November — March)
Secchi Depth, m
Photic Zone
2/Month
(June — September)
N/A
N, mg/L
Depth integrated
(use composite sampler)
2/Month
(June — September)
N/A
Page 8 of 17

Permit NC0021253
(Continued A.(5) INSTREAM MONITORING REQUIREMENTS)
EFFLUENT
CHARACTERISTICS
SAMPLE TYPE
MEASUREMENT FREQUENCY
lhlorophyll-a, mg/L
Depth integrated
(use composite sampler)
2/Month
(June — September)
N/A
NO2-N + NO3 N, mg/L
Depth integrated
(use composite sampler)
2/Month
(June — September)
N/A
�VH3 N, mg/L
Depth integrated
(use composite sampler)
2/Month
(June — September)
N/A
Total Phosphorus, mg/L
Depth integrated
(use composite sampler)
2/Month
(June — September)
N/A
A.(6) CALCULATION OF TOTAL NITROGEN LOADS
a. The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load (pounds/month) = TN x TMF x 8.34
where: TN = the average Total Nitrogen 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
ii. Annual TN Load (pounds/year) = Sum of the 12 Monthly TN Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen results (mg/L and pounds/month) in the
appropriate discharge monitoring report for each month and shall report each year's results
(pounds/year) with the December report for that year.
A.(7) ANNUAL LIMITS FOR TOTAL NITROGEN
a. Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin apply on a calendar year basis.
b. For any given calendar year, the Permittee shall be in compliance with the annual TN Load limit
in this Permit if:
i. the Permittee's annual TN discharge is less than or equal to its TN Load 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 discharge exceeds the effective TN Load limit in this permit at any point
during the calendar year, the Permittee is in violation of its TN Load limit, and each day of a
continuing violation shall constitute a separate violation.
d. The TN Load limit in this Permit (if any) may be modified as the result of allowable changes in
the Permittee's TN allocation.
i. Allowable changes include those resulting from purchase of TN allocation from the
Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation between the
Permittee and other dischargers; regionalization; and other transactions approved by the
Division.
ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
Page 9of17

Permit NC0021253
(Continued A.(7) ANNUAL LIMITS FOR TOTAL NITROGEN)
iii. Changes in TN 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 Branch
Attn: Neuse 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, its TN
discharge during that year is governed by that association's group NPDES permit and the TN
limits therein.
i. 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.
u. Association roster(s) and members' TN allocations will be updated annually and in
accordance with state and federal program requirements.
iii. 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.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
f. The TN monitoring and reporting requirements in this Permit remain in effect until expiration of
;this Permit and are not affected by the Permittee's membership in a compliance association.
A.(8) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or
subsequent versions. The tests will be performed during the months of January, April, July, and October.
These months signify the first month of each three month toxicity testing quarter assigned to the
facility. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-
3 (original) is to be sent to the following address:
Page 10 of 17

Permit NC0021253
(Continued A.(8) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY))
Attention: North Carolina Division of Water Resources
Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test. Forms shall be filed with the Environmental 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, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity 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
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Section at
the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month. Assessment of toxicity compliance is based on the toxicity testing
quarter, which is the three month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement 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.
If the Permittee monitors any pollutant more frequently than required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Form
submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, 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.
A.(9) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Mysidopsis bahia at an effluent concentration of 15% at 2.25 MGD, 16% at 2.8 MGD, 16% at 3.5 MGD.
The permit holder shall perform at a minimum, quarterly monitoring using procedures described below to
establish compliance with the permit condition. The tests will be performed during the months of January,
April, July, and October. These months signify the first month of each three month toxicity testing
quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative
effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below.the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months. as described in EPA Method 1007.0, Mysid, Mysidopsis bahia,
Survival, Growth, and Fecundity Test, as described in Short -Term Methods for Estimating the Chronic
Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, Third Edition, EPA821-R-02-
014, October 2002.
Page 11 of 17

Permit NC0021253
(Continued A.(9) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY))
The test procedure will be based on EPA Method 1007.0, Mysid, Mysidopsis bahia, Survival, Growth, and
Fecundity Test, as described in Short -Term Methods for Estimating the Chronic Toxicity of Effluents and
Receiving Waters to Marine and Estuarine Organisms, Third Edition, EPA-821-R-02-014, The procedure will be
performed as written with the following exceptions:
• The test treatments will consist of a control and a 15% at 2.25 MGD, 16% at 2.8 MGD,
16% at 3.5 MGD effluent concentration ("pass/fail,") or a control and five effluent
concentrations, one of which will be 15% at 2.25 MGD, 16% at 2.8 MGD, 16% at 3.5 MGD
and one of which will be 7.5% at 2.25 MGD, 8% at 2.8 MGD, 8% at 3.5 MGD.
• Mortality for pass/fail tests will be evaluated using the t test described in Section 11.3 in
Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms,
Fifth Edition. EPA-821-R-02-012, October 2002, applying an alpha level of 0.05.
• The growth endpoint for pass/fail tests will be determined using Appendix G of Short -Term
Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and
Estuarine Organisms, Third Edition, EPA-821-R 02-014, October 2002, applying an alpha level
of 0.01.
• Mortality and growth endpoints for multiple -concentration tests will be determined using
hypothesis testing as described in EPA Method 1007.0, Mysid, Mysidopsis bahia, Survival,
Growth, and Fecundity Test, as described in Short -Term Methods for Estimating the Chronic
Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, Third Edition,
EPA-821-R-02-014, October 2002.
• Fecundity will not be evaluated.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed. For pass/fail
results, report using the parameter code TGP3E and the DWQ Form AT-4 (original), which is to be
sent to the address below. Additionally, for reporting Chronic Value results use the parameter code
THP3E and DWQ Form AT-6 (original), which is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Envirorunental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental 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, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity 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 facility name, permit number, pipe number, county, and the month/year of the
report with the notation of "No Flow" in the comment area of the form. The report shall be submitted
to the Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month. Assessment of toxicity compliance is based on the toxicity testing
quarter, which is the three month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Page 12 of 17

•
Permit NC0021253
(Continued A.(9) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY))
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Rsources indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of
such monitoring shall be included in the calculation & reporting of the data submitted on the DMR &
all AT Form submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, 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.
Page 13 of 17

Permit NC0021253
A.(10) EFFLUENT POLLUTANT SCAN
a. 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: 2015, 2016, and 2017.
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 (1631E)
P-chloro-m-cresol
Dimethyl phthalate
Nickel
2-chlorophenol
2,4-dinitrotoluene
Selenium
2,4-dichlorophenol
2,6-dinitrotoluene
Silver
2,4-dimethylphenol
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-dichloroethane
Benzo(k)fluoranthene
1,2-dichloroethane
Bis (2-chloroethoxy) methane
b.
Test results shall be reported on DWQ 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 DENR / DWR / Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Page 14 of 17

Permit NC0021253
A.(11) TOTAL NITROGEN ALLOCATIONS
a. The following table lists the Total Nitrogen (TN) allocation(s) assigned to, acquired by, or
transferred to the Permittee in accordance with the Neuse River nutrient management rule (T15A
NCAC 02B .0234) and the status of each as of permit issuance. For compliance purposes, this table
does not supersede any TN limit(s) established elsewhere in this permit or in the NPDES permit of
a compliance association of which the Permittee is a Co-Permittee Member.
-, , - r i;: A .
ALLOCATION :
LO _-� warm •
TYPE ,
: ' , _
f
SOURCE
- >. i
DATE` +
ALLOCATION AMOUNT'
., .•.. ..,� . `'T dry
STATUS
,
_......
;
Estuary
(lb/year)
,_
Discharge
:(lb/year): F_
Base
Assigned by Rule
(T15A NCAC 02B .0234)
12/7/97;
4/1/03
21,400
4
2100
'
Active
TOTAL
21,400
21,400
Active
Footnote:
1. Transport Factor = 100%
b. Any addition, deletion, or modification of the listed allocation(s) (other than to correct
typographical errors) or any change 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.
A.(12) USE OF CHLORINATION FOR DISINFECTION
a. If chlorine or chlorine derivative compounds are used as a means of chlorination disinfection, the
permittee must inform the Surface Water Protection Section staff of the Washington Regional Office
of this action. Also, a total residual chlorine (TRC) daily compliance limit will immediately apply
for the duration of the chlorination, 17 µg/L for discharge to East Prong Slocum Creek, or 13 µg/L
for discharge to the Neuse River. Daily TRC monitoring shall be conducted for the duration of the
chlorination and TRC values reported on the monthly discharge monitoring report. TRC values
reported below 50 .ig/ L are considered to be in compliance with the permit. However, the
Permittee 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 lxg/L.
b. If the effluent TRC level is anticipated to exceed or exceeds the compliance limit, approved
dechlorination methods shall be employed to meet compliance and ensure protection of water
quality in the receiving stream.
A. (13)ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
Proposed 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 Division anticipates that these regulations will
be adopted and is beginning implementation in late 2013.
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
Page 15 of 17

Permit NC0021253
(Continued A. (13) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than March 1, 2015, the permittee shall begin reporting 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 to 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 DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
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.
Requests for temporary waivers from the NPDES electronic reporting requirements 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 using eDMR. Temporary waivers shall be valid for twelve (12) months
and shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the
permittee re -applies for and is granted a new temporary waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
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.
2. Signatory Requirements (Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)j
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 aneDMR 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://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Page 16 of 17

Permit NC0021253
(Continued A. (13) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
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 certj, 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 submitted 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 fines and imprisonment for knowing violations."
3. Records Retention [Supplements Section D. (6.)1
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].
A. (14) MERCURY MINIMIZATION PLAN (MMP)
The permittee shall develop and implement a mercury minimization plan during this permit term. The
MMP shall be developed before December 1, 2014, and shall be available for inspection on -site. A
sample MMP was developed through a stakeholder review process and has been placed on the Division
website for guidance:
http: //portal. ncdenr. org/web/wq/swp/ps/npdes under "Model Mercury Minimization Plan"
The MMP should place emphasis on identification of mercury contributors and goals for reduction.
Results shall be summarized and submitted with the next permit renewal.
Page 17 of 17

4'• AT ^`'"-Y• USA Neuse River Outfall
L%. `0 ���, 4 11, with diffuser
�; . • r ,��*;�• �R NC0021253
East Prong Slocum
Creek Outfall
NC0021253
Si=10 ft upstream of diffuser
S2 = 10 ft downstream of diffuser
S3 = 10 ft from end of diffuser
Note: Diffuser 80 ft in length
SCALE: 1 in = 40000 ft
USGS Quad: H31NW Havelock, NC
Latitude Longitude
Facility: 34° 53' 13.7" N 76° 54' 33.1" W
East Prong Slocum Creek Outfall: 34° 53' 20" N 76° 54' 30" W
Neuse River Outfall: 34° 57' 11" N 76° 52' 37" W
Stream Class East Prong Slocum Creek: C, Sw, NSW
Stream Class Neuse River: SB, Sw, NSW
Subbasin: 03-04-10 HUC: 03020204
-f North
Facility Location
City of Havelock WWTP
Craven County

AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA Ad Number
COUNTY OF WAKE 0000865974
Advertiser Name*
Address:
Public Notice
• North Carolina Environmental
Management Commission/NPDES Unit
DEPARTMENT OF WATER RESOURCES Raleigh, NC 1617
Notice of Intent to Issue a
1617 MAIL SERVICE CENTER PROTECTION SECTION The N nn Sc rolinna eEnvi ontmental
RALEIGH, NC 276991617
Before the undersigned, a Notary Public of Wake
County North Carolina, duly commissioned and
authorized to administer oaths, affirmations, etc.,
personally appeared DEBORAH MAHAFFEY, who
being duly sworn or affirmed, according to law, doth
depose and say that he or she is Accounts
Receivable Specialist of The News & Observer a
corporation organized and doing business under
the Laws of the State of North Carolina, and
publishing a newspaper known as The News &
Observer, in the City of Raleigh, Wake County and
State aforesaid, the said newspaper in which such
notice, paper, document, or legal advertisement
was published was, at the time of each and every
such publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of
the General Statutes of North Carolina and was a
qualified newspaper within the meaning of Section
1-597 of the General Statutes of North Carolina,
and that as such he or she makes this affidavit; and
is familiar with the books, files and business of said
corporation and by reference to the files of said
publication the attached advertisement for
DEPARTMENT OF WATER RESOURCES was
inserted in the aforesaid newspaper on dates as
follows:
01/18/2014
491/ -(j/11 1 ... i
DEBORAH MAHAFFEY, Accounts R:ceiab(e Specialist
Wake County, North Carolina
Management Commission proposes to
issue a NPDES wastewater discharge
permit to the persan(s) listed below.
Written comments regarding the Pro-
posed 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 de-
gree of public interest. Please mail com-
ments and/or information requests to
DWR at the above address. Interested
persons may visit the DWR at 512 N. Sol-
isbury Street, Raleigh, NC to review in-
formation on file. Additional information
on NPDES permits and this notice may
be found on our webslte: http://nortal.nc
denr.org/web/wq/swp/ns/nodes/calenia_lor,
or by calling C9)-80T-339i1; City of Ha-
velock requested renewal of permit
NC0021253 for Havelock WWTP in Cra-
ven County; this modified permitted dis-
charge is for treated domestic wastewa-
ter to the East Prong Slocum Creek,
Neuse River Basin. The City of Raleigh
requested Renewal of permit NC0088285
for the Dempsey E. Benton WTP in
Wake County; this permitted discharge
is treated filter backwash to Lake Ben-
son, Neuse River Basin. Fuicher's Point
Pride Seafood, Oriental, Pamlico Coun-
ty, applied to renew NPDES permit
N00003174 discharging to Racoon Creek
within the Neuse River Basin. The Town
of Cary requested renewal of permit
NC0048879 for its North Cary Water Rec-
lamation Facility In Wake County; this
permitted discharge is treated domestic
wastewater to Crabtree Creek, Neuse
River Basin.
N&O: January 18, 2014
Sworn to and subscribed before me
This 20th day of January, 2014
My Commission Expires: C a/oi-Of'"
Notary Signature

DENR/DWQ eetieta I
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES PERMIT NC0021253
Facility Information
Applicant/Facility
Name:
City of Havelock WWTP
Applicant Address:
P. O. Box 368; Havelock, NC 28532
Facility Address:
304 North Jackson Drive; Havelock, NC 28532
Permitted Flow
1.9 MGD
Type of Waste:
100% domestic
Facility/Permit Status:
Class IV /Active
County:
Craven County
State Grid / USGS
Quad:
H31NW
Havelock, NC
Regional Office:
Washington
Subbasin:
03-04-10
HUC:
03020204
1.9 MGD (Active)
Receiving Stream:
East Prong Slocum
Creek
Stream Classification:
C, Sw, NSW
Drainage Area (mi2):
n/a
Index No.
27-112-2
Summer 7Q10 (cfs):
Tidal
303(d) Listed?
No
Winter 7Q10 (cfs):
Tidal
30Q2 (cfs):
Tidal
Average Flow (cfs):
Tidal
IWC (%):
100%
2.25 MGD expansion and relocate outfall to Neuse River with diffuser (Phase I)
2.8 MGD (Phase II) expansion
3.5 MGD (Phase III) expansion
Receiving Stream:
Neuse River
Stream Classification:
SB, Sw, NSW
Drainage Area (mi2):
n/a
Index No.
27-(104)b
Yes, Chlorophyll a,
high pH
Summer 7Q10 (cfs):
Tidal
303(d) Listed?
Winter 7Q10 (cfs):
Tidal
*Phase I- IWC (%):
14.6%
30Q2 (cfs):
Tidal
*Phase II- IWC (%):
15.6%
Average Flow (cfs):
Tidal
*Phase III- IWC (%):
16.3%
*Model summer dilution data defines IWC
(%) at 10 ft radius '
Permit Writer:
Ron Berry
Date:
12/16/13
BACKGROUND
The City of Havelock operates a 1.9 MGD tertiary wastewater treatment facility with additional
biological nutrient reduction treatment that serves the Havelock community, population 13,000.
The City of Havelock facility currently discharges treated 100% domestic wastewater to East
Prong Slocum Creek, a freshwater tidal class C, Sw, NSW water in the Neuse River Basin.
East Prong Slocum Creek cannot support any increase in discharge because of poor water quality
and lack of assimilative capacity. The City was advised by the Division that an expansion above
1.9 MGD will require the relocation of the outfall to the Neuse River.
History
2004 — Assigned TN Load allocation per 15A NCAC 02B .0234.
2008 — Issued renewal, continued same parameters and limits.
2009 — Provided speculative limits for various expansions scenarios with the outfall relocated to
the Neuse River.
Fact Sheet
NPDES NC0021253
Page 1 of 6

2012 — Issued major permit modification for Phase I expansion to 2.25 MGD which included
relocation of outfall to Neuse River, a tidal class SB, Sw, NSW stream, through a
diffuser, for Phase II expansion to 2.8 MGD, and for Phase III expansion to 3.5 MGD.
All Phases limits based on approved stream model. Priority Pollutant Scan amended to
three annual scans and designated Method 1631E for mercury measurement. TRC
requirement removed and added special condition for chlorination. Zinc monitoring
reduced to quarterly.
Permittee was accepted into the Neuse River Compliance Association.
ATC permit issued for Phase I, construction still in progress.
TREATMENT PROCESS
Untreated domestic waste is introduced to the plant headworks via a 24 inch forced sewer main
where mechanical screening followed by grit removal is conducted on the influent before it is
collected in the influent pump station. The influent pumps convey the wastewater to a
distribution box that controls the rate to the two parallel first stage 840,000 gallon aeration
basins. The distribution box also serves as a mixing point to recycle RAS. A fine bubble diffuser
system is used to distribute the air and to provide mixing in the basins.
The effluent from the first stage aeration basins are combined and then flow through three in
series second stage aeration basins. Basins one and two volumes are 150,000 gallons, the third
basin volume is 190,000 gallons. The second stage basins provide addition biological treatment
including nitrification. Coarse air is used in the second stage aeration basins. The effluent from
the third second stage aeration basin is collected in the final clarifier pump station.
Pumps transfer the wastewater from the final clarifier pump station to the final clarifier
distribution box. The pumps provide sufficient head to allow gravity flow for the remainder of
treatment process to final discharge in East Prong Slocum Creek. To enhance suspended solids
removal and TP removal in the final clarifiers, polyaluminum chloride is added to the final
clarifier pumps discharge header. The polyaluminum chloride additive system consists of a 7,500
gallon storage tank, chemical feed pumps, and controls.
From the distribution box the influent is directed to two parallel 65 feet diameter final clarifiers.
WAS and RAS are removed from the final clarifiers with the WAS being diverted to the waste
solids holding tank. The effluents from the final clarifiers are combined and flow to three in
series multimedia 7,500 ft3 denitrification filters. To further enhance denitrification, methanol is
added as a carbon source to the filters influent. A 7,500 gallon storage tank and chemical feed
system make up the methanol system.
The effluent from the denitrification filter enters the original chlorination channel, which was
retrofitted with a UV disinfectant system, then flows through the reaeration basin, then the
effluent flow meter channel, and then is discharge into East Prong Slocum Creek. Two
mechanical aerators provide aeration in the reaeration basin. Backwash water is pumped from the
reaeration basin through the denitrification filters, accumulated in the filter backwash waste
detention tank, and then pumped back to the influent pump station.
Solids from the waste solids holding tank are further dewatered, thickened by chemical treatment
and/or gravity belt thickener, and trucked off site for land application. Additional solids storage,
chemical storage, and truck loading facilities make up the solids operation. Any capture water
from the solids operation is recycled to the wastewater treatment plant.
COMPLIANCE HISTORY
Since July 2008 this facility has had six limit violations which resulted in total civil penalties of
$10,552. There were some minor missing data events but none resulted in additional
enforcement actions.
Fact Sheet
NPDES NC0021253
Page 2 of 6

PERMIT TING STRATEGY
Reasonable Potential Analyses (RPA)
The reported DMR data and scans data yielded detected levels of copper, zinc, and bis (2-
ethyletyhl) phthalate. A RPA was performed, all three parameters were shown to have
reasonable potential to exceed their respective WQS. Since copper and zinc are action level
parameters and the facility continues to pass its toxicity test, quarterly monitoring for copper and
zinc in conjunction with the toxicity test will continue.
The Permittee was contacted and advised about the detected phthalate and pending impact to this
permit. A written statement identifying vinyl tubing as the phthalate source and its replacement
with silicone -based tubing was provides by the Permittee. Will continue phthalate monitoring in
the priority pollutant scans data.
Data Review
DMR data from July 1, 2011 through September 30, 2013 was evaluated and is summarized in
Table I:
Table I: DMR Data Summ
Flow*
(MGD)
BOD*
(mg/L)
TSS*
(mg/L)
Fecal
Coliform*
( 100m)
pH
(S.U.)
DO
(mg/L)
NH3-N*
(mg/L)
Average
1.382
2.505
13.278
28.32
7.64
7.95
0.086
Maximum
1.83
4.54
17.81
128.6
8.2
9.6
0.29
Minimum
1.09
2.03
2.50
1.1
7.1
6.4
0.05
* based on monthly average
Removal for BOD was 97.8% - 99.3%, for TSS 90.5% - 99.4%.
Neuse River Permitting Strategy for 2013
DMR data from July 1, 2011 through September 30, 2013 was evaluated and is summarized in
Table II:
Table II: Nutrient Surnmary Data
Nitrogen Species
TP
(mg/L)
TN*
(mg/L)
TKN
(mg/L)
NO2-N+NO3-N
(mg/L)
Average
3.471
0.978
2.504
0.557
% Total*
100%
28%
72%
-
Maximum
12.15
-
-
1.5
Minimum
0.99
-
-
0.04
*TN = TKN + (NO2-N+NO3-N)
TN Annual Mass Load Allocation (21,400 lbs/calendar year)
2011: 12,698 lbs/yr (59% of annual allocation)
2012: 15.377 lbs/yr (73% of annual allocation)
Note: To meet the TN annual mass allocation, the removal of the NO2-N+NO3-N species is the
design bases for treatment. See Table II for summary of species.
TP Seasonal Limit (East Prong Slocum Creek)
Summer = 0.7 mg/L quarterly average
Winter = 1.0 mg/L quarterly average
Maximum Reported Quarterly Average July 1, 2011 through September 30, 2013 = 0.65 mg/L
Fact Sheet
NPDES NC0021253
Page 3 of 6

Nitrogen
The Environmental Management Commission adopted Nutrient Management Strategy rules in
December 1997, classifying the entire Neuse River Basin as Nutrient Sensitive Waters. The point
source rule (T15A NCAC 2B .0234) sets Total Nitrogen (TN) discharge limits for all point
source dischargers larger than 0.5 MGD.
The rule also allows dischargers to form a group compliance association and work together to
reduce nitrogen; this option allows the association members added flexibility in controlling
nitrogen discharges. At the same time, the association is subject to a group NPDES permit
ensuring that the association and its individual members are accountable if they exceed the
applicable nitrogen limits.
Under the rule, there are three types of TN limit in the Neuse:
1. the individual limits in the dischargers' individual permits,
2. the aggregate limit in an association's group NPDES permit, and
3. the individual allocations/limits for each Association member, also in that association
permit.
A discharger may be subject to the first type of limit, or to the second and third, but never to all
three at the same time. The discharger is first subject to the TN limit (if any) in its individual
NPDES permit. If becomes a co-permittee to a compliance association's group NPDES permit, it
is then governed by the TN limits in that permit. If the association complies with its group TN
limit in a given year, all members are deemed to be in compliance with their individual
allocations/ limits in the group permit. If the association exceeds its limit, the members then
become subject to their individual allocations/ limits as well.
Regardless of which permit governs a TN discharge, allocations/ limits will likely change over
time as the dischargers purchase, sell, trade, lease, or otherwise transfer nitrogen allocations. The
Division will modify the affected permits as necessary to ensure that the limits are kept up to
date and reflect any such transactions.
The permit includes nutrient limits consistent with the Nutrient Management Strategy rule (T15A
NCAC 2B .0234). Under the new rule, the City of Havelock receives a TN Load limit of 21,400
lb/yr, a calendar year limit. There are no plans for further regionalization.
The City -of Havelock is a member of the Neuse River Compliance Association at this time. So
long as it remains a co-permittee member, it is deemed to be in compliance with the TN limit in
this permit, and its TN discharge is governed instead by the Association's group NPDES permit,
issued December 30, 2002.
Phosphorus
As long as the City of Havelock continues to discharge to East Prong Slocum Creek, the
seasonal (April — October) water quality assessment quarterly average limit of 0.7 mg/L applies
regardless of membership status in the Neuse River Compliance Association.
Upon relocation of the outfall to the approved Neuse River location, the City will receive a Total
Phosphorus limit based on 15A NCAC 02B .0234 Section 8, limits for expanding facility. As a
member of the Neuse River Compliance Association, a year round quarterly average limit of 2.0
mg/L applies. If a non-member or if membership is terminated in the compliance association
then a monthly average limit 1.0 mg/L will automatically apply.
Mercury TMDL
No mercury measurements based on the lower range Method 1613E were taken to date. To
collect sufficient data to conduct the US EPA approved October 2012 Mercury TMDL
evaluation, quarterly monitoring using Method 1631E will be implemented in this permit to
Fact Sheet
NPDES NC0021253
Page 4 of 6

collect data and used to conducted the Mercury TMDL based evaluated at the next permit
renewal. Since the facility is constructing an expansion that will exceed 2.0 MGD, a special
condition requiring the facility to develop a Mercury Minimization Plan will be added.
Instream Monitoring
The City of Havelock is a member of the Lower Neuse Basin. Association. The current discharge
to East Prong Slocum Creek instream monitoring requirements are waived contingent on the
Permittee membership in this association. However, upon relocation of the outfall to the
approved Neuse River location the new instream monitoring requirements are mandatory and
cannot be waived.
Priority Pollutant Scans
Three scans were provided. The latest scan was conducted prior to the new mercury method
1631E requirement. The three reported mercury EPA 245.1 analyses were no detects (less than
200 ng/1). See RPA for evaluation of detected compounds.
Electronic DMR (eDMR) Compliance Special Condition
To facilitate US EPA guidance on meeting future eDMR reporting, a special condition outlining
Permittee's options, the web site for obtaining forms, and the compliance date 90 from the
effective date will be added to this permit. The Permittee may apply for a temporary waiver
request to comply with eDMR at least 60 days prior to the eDMR compliance date, and will be
granted a waiver if . the Permittee meets the waiver criteria. If no waiver is applicable the
Permittee must begin submittal of DMR electronically 90 days after the permit effective date.
The Permittee will also be required to submit a signed printed copy of the monthly eDMR to the
Division to comply with current US EPA's Cross -Media Electronic Reporting Regulation. A
footnote will be added to A (1.) effluent page for reference to eDMR special condition.
Other Reviewers
The EPA and Aquatic Toxicology Unit will be asked to review and comment on the draft.
SUMMARY OF LIMITS
Receiving Stream: East Prong Slocum Creek Class:
C, Sw, NSW
Treated domestic wastewater, permitted for 1.9 MGD
Treatment: BNR, de -nitrification filters, UV
Parameters (UOM as noted)
Limits
Basis of Permit Limit
BOD, mg/L
g�
(summer)
5.0 monthly avg
7.5 weekly avg
WQ
(winter)
10.0 monthly avg
15.0 weekly avg
TSS, mg/L
30.0 monthly avg
45.0 weekly avg
40 CFR 133.102
BOD & TSS
85% removal
40 CFR 133.102
NH3-N, mg/L
(summer)
0.5 monthly avg
1.5 weekly avg
WQ, BAT
(winter)
1.0 monthly avg
3.0 weekly avg
Fecal coliform, #/100 ml
(geometric mean)
200 monthly avg
400 weekly avg
WQ
pH, S.U.
6.0 — 9.0
40 CFR 133.102
DO, mg/L '
5.0 daily avg minimum
WQ
TN Load, lbs/yr
21,400 & compliance association
15A NCAC 02B .0234
TP, mg/L
(summer)
0.7 quarterly avg
WQ
(winter)
1.0 quarterly avg
WQ
Chronic toxicity, P/F
P/F quarterly, 90% concentration
NCDENR toxicity strategy, WQ
Receiving Stream: Neuse River Class:
SB, Sw, NSW
Treated domestic discharge through diffuser, permitted for 2.25 MGD, 2.8 MGD, 3.5 MGD
Treatment: BNR, de -nitrification filters, UV
Parameters (UOM as noted)
Limits
Basis of Permit Limit
BOD, mg/L
(summer)
5.0 monthly avg
7.5 weekly avg
WQ
(winter)
10.0 monthly avg
15.0 weekly avg
Fact Sheet
NPDES NC0021253
Page 5 of 6

TSS, mg/L
30.0 monthly avg
45.0 weekly avg
40 CFR 133.102
BOD & TSS
85% removal
40 CFR 133.102
NH3-N, mg/L
1.0 monthly avg
3.0 weekly avg
WQ, BAT
Enterococci, #/100 ml
(geometric mean)
_
35 monthly avg
276 weekly avg
WQ
pH, S.U.
6..8 — 8.5
40 CFR 133.102
DO, mg/L
5.0 daily avg minimum
WQ
TN Load, lbs/yr
21,400 & compliance association
15A NCAC 02B .0234
TP, mg/L
2.0 quarterly avg
15A NCAC 02B .0234
Chronic toxicity
(saltwater), P/F
P/F quarterly, 150% (2.25 MGD; 16%
(2.8 MGD); 16% (3.5 MGD)
concentration
NCDENR toxicity strategy, WQ
Comments/Changes
1) Mercury TMDL, requires Permittee to provide measurements using Method 1631E for evaluation and to
develop a Mercury Minimization Plan (MMP), Quarterly mercury monitoring to collect data for evaluation
at next renewal and a special condition were added for MMP.
2) eDMR reporting compliance 90 days from effective date of this permit and special condition was added.
3) Other special condition and permit narratives updates were implemented.
In keeping with Division strategies the following will be incorporated into the permit:
• Mercury monitoring on a quarterly basis using Method 1631E will be added.
• Mercury Minimization Plan special condition will be added.
• eDMR special condition will be added.
• Narrative in chronic toxicity special conditions and effluent pollutant scan special
condition will be updated.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: December 18, 2013
Permit Scheduled to Issue: February 2014
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Ron Be at (919) 07-6396 or email ron.berry@ncdenr.g /v.
NAME: DATE: / ! % /3
REGIONAL OFFICE COMMENTS
NAME: DATE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NC0021253
Page 6. of 6

Date Data
8/18/2010
3/9/2011
7/12/2011
8/4/2011
10/6/2011
11/3/2011
12/8/2011
1/10/2012
2/2/2012
3/8/2012
4/4/2012
5/4/2012
6/7/2012
7/6/2012
8/7/2012
9/6/2012
10/512012
11/8/2012
12/6/2012
1/102013
2/7/2013
3/6/2013
4/3/2013
5/9/2013
6/52013
7/3/2013
8/8/2013
9/5/2013
Copper (AL)
5
12
14
16
17
10
10
11
15
10
10
10
12
12
13
10
10
10
10
10
10
10
14
10
10
55
10
10
10
BDL=1/2DL Results
5 Std Dev. 9.6158
12 Mean 10.0345
14 C.V. 0.9583
16 n 29
17
5 Mult Factor = 2.80
5 Max. Value 55.0 ug/L
11 Max. Pred Cw 154.0 ug/L
15
5
5
10
12
12
13
5
5
5
5
5
5
5
14
5
5
55
5
5
10
SPECIAL -
Values" WITH
"COPY"
REASONABLE POTENTIAL ANALYSIS
Zinc (AL)
Date Data BDL=1/2DL Results
1 12/14/2009 39 39 Std Dev. 11.1863 1
2 8/18/2010 68 68 Mean 54.3860 2
3 3/9/2011 63 63 C.V. 0.2057 3
4 7/12/2011 57 57 n 57 4
5 7/21/2011 66 66 5
6 8/4/2011 56 58 Mult Factor = 1.20 6
7 8/18/2011 64 64 Max. Value 79.0 ug/L 7
8 9/9/2011 40 40 Max. Pred Cw 94.8 ug/L 8
9 922/2011 57 57 9
10 10/6/2011 52 52 10
11 10/17/2011 82 62 11
12 11/3/2011 43 43 12
13 11/17/2011 65 65 13
14 12/8/2011 54 54 14
15 12/21/2011 55 55 15
16 1/10/2012 69 69 16
17 1/19/2012 76 76 17
18 2/2/2012 64 64 18
19 2/16/2012 50 50 19
20 3/8/2012 59 59 20
21 3/22/2012 57 57 21
22 4/4/2012 53 53 22
23 4/19/2012 68 68 23
24 5/4/2012 54 54 24
25 5/17/2012 55 55 25
26 6/7/2012 53 53 26
27 6/21/2012 55 55 27
28 7/6/2012 44 44 28
29 7/19/2012 51 51 29
30 8/7/2012 42 42 30
31 8/24/2012 36 36 31
32 9/6/2012 35 35 32
33 9/18/2012 45 45 33
34 10/5/2012 29 29 34
35 10/18/2012 45 45 35
36 11/8/2012 45 45 36
37 11/21/2012 44 44 37
38 12/6/2012 52 52 38
39 12/20/2012 40 40 39
40 1/10/2013 41 41 40
41 1/25/2013 54 54 41
42 2/7/2013 63 63 42
43 2/18/2013 47 47 43
44 3/6/2013 63 63 44
45 3/21/2013 58 56 45
46 4/3/2013 73 73 46
47 4/19/2013 69 69 47
48 5/9/2013 40 40 48
49 5/22/2013 79 79 49
50 6/5/2013 74 74 50
51 6/19/2013 65 65 51
52 7/3/2013 61 61 52
53 7/18/2013 52 52 53
54 8/82013 53 53 54
55 822/2013 49 49 55
56 9/5/2013 41 41 56
57 920/2013 58 56 57
53 58
59 59
60 60
61 61
62 62
63 63
64 64
SPECIAL -
Values" WITH
"COPY"
Bis(2-ethylexyl) phth alate
Date Data BDL=1/2DL Results
6r1WLV1V
3/9/2011
32
36
SPECIAL -
Values" WITH
"COPY"
32 Std Dev. 2.8284
36 Mean 34.0000
C.V. (default) 0.6000
n 2
Mult Factor = 7.39
Max. Value 36.000000 pg/L
Max. Pred Cw 266.04000 pg/L
1
2
3
4
5
6
7
8
9
10
1t
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
59
60
61
62
63
64
Date Data
RPA-1.9 Freshwater.xlsm, data
12/16/2013

Havlock WWTP
NC0021253
REASONABLE POTENTIAL ANALYSIS
Qw (MGD) = 1.90
1QIOS(cfs)= 0.00
7Q l OS (cfs) = 0.00
7QIOW(cfs)= 0.00
30Q2 (cfs)= 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: East Prong Slocum Creek
WWTP/WTP Class: IV
IWC Q IQIOS = 100.00%
IWC !r 7Q1OS = 100.00%
IWC C 7Q1OW = 100.00%
IWC Q 30Q2 = 100.00%
IWCQQA= 100.00%
Stream Class: C, Sw, NSW
Outfall 001
Qw = 1.9 MGD
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
a
rL UNITS
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '// FAV /
Chronic Standard Acute
Max Pred
n%I Del. Allowable Allowable Cw
Copper (AL)
NC
7 FW 7.3
29 14
154
Acute: 7.3
Chronic 7.0
13 value(s) > Allowable Cw
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test
RP for AL(Cu,Zn,Ag,Fe,CI) apply Quarterly
Monitoring in conjunction with TOX Test
Zinc (AL)
NC
50 I \\
will.,
57 57
94.8
Acute: 67.0
Chronic 50.0
38 value(s) > Allowable CwMonitoring
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test
RP for AL(Cu,Zn,Ag,Fe,CI) apply Quarterly
in conjunction with TOX Test
Bis(2-ethylexyl)phthalato
C
2.2 IIII
µg/L
2 2
Note: n < 9
Limited data set
266.04000
Default C.V.
Acute: NO WQS
_ _
Chronic:2.20000
2 value(s) > Allowable Cw
Suspect lab error
Susoect interfernce from plastic lab ware
Page 1 of 1
RPA-1.9 Freshwater.xlsm, rpa
12/16/2013

NPDES Permitting for Mercury
Implementation of 2012 Statewide Mercury TMDL
Facility Type
Annual Average
Limit Required (see A)
Monitoring Frequency
(with 1631E analysis)
MMP Required (see B)
Major Muni (>1 MGD)
Yes
Quarterly
Yes(if> 2 MGD)
No
3 PPA only
Yes- if multiple detects
above 1 ng/I and > 2
MGD
Minor Muni (<1 MGD)
Yes
Quarterly
No
No
Once/5 years
No
Industrial
Yes
Quarterly
Yes
No
None in permit. Might
be required for EPA
application form.
No
A.Procedure to Determine if Annual Average Limit Required:
Step 1- WQBEL Evaluation
• Evaluate need for Water Quality Based Effluent Limit (WQBEL)
• Calculate Allowable mercury concentration using dilution (12 ng/I x 7Q10 dilution factor)
• Compare Annual effluent concentrations to Allowable Conc. for each of last 5 years
• If any Annual Avg > Allowable Conc., then add Annual Avg WQBEL.
Step 2- TBEL Evaluation
• Evaluate need for Technology Based Effluent Limit (TBEL)
• Compare all individual values to TBEL of 47 ng/1
• If any single value > 47 ng/I, then add Annual Avg TBEL of 47 ng/1.
Step 3- Compare WQBEL to TBEL
• If data triggers need for WQBEL and TBEL, select most stringent of the two limits.
• If data triggers need for only TBEL, add 47 ng/1 annual average limit unless WQBEL < 47 ng/I,
in which case annual avg limit should be set at WQBEL.
• Conclusion: the Annual Avg limit will range from 12 ng/I to upper cap of 47 ng/l.
Step 4- If NEW limit, delay effective date
• Addition of new limit will become effective in 51h year of permit, with mercury minimization plan
development/implementation required for first 4 years (see MMP below).
B. Mercury Minimization Plan (MMP). If an MMP is required (note change to Major Municipal >
2MGD), add the following Special Condition to the permit:
A(x). Mercury Minimization Plan (MMP). The permittee shall develop and implement a mercury
minimization plan during this permit term. The MMP shall be developed within 180 days of the NPDES
Permit Effective Date, and shall be available for inspection on -site. A sample MMP was developed
through a stakeholder review process and has been placed on the Division website for guidance
(http://portal.ncdenr.org/web/wq/swp/ps/npdes, under Model Mercury Minimization Plan). The MMP
should place emphasis on identification of mercury contributors and goals for reduction. Results shall be
summarized and submitted with the next permit renewal.
C. New/Expanding Dischargers- will be allowed as long as the overall aggregate point source load
allocation is not exceeded.
D. Special Situations- Additional site -specific information, such as fish tissue and water column data
when available, will be considered in assigning limits and MMP requirements. Also, limits > TBEL may
be considered on case -by -case basis due to extenuating circumstances
Version 06/13/2013 Prepared by: Tom Belnick Approved by Jeff Poupart

Berry, Ron
From: Art Hough [[e-mail]]
Sent: Friday, December 13, 2013 9:10 AM
To: Berry, Ron
Cc: Bill Ebron
Subject: Permit renewal NC 0021253
Mr. Berry,
We spoke on Monday December 9, 2013 and you informed me that we had high levels of 2-ethylhexyl phthalate in our
2010 and 2011 annual pollutant scans. Since that conversation I audited our sampling procedures. I checked all of our
sampling methods and lab ware and found we sampled using glass bottles, however the sampling tubing used in our
peristaltic pump was vinyl tubing containing 2-ethylhexyl phthalate. The person sampling used the sampling pump to
pull the grab samples and then put them into a glass bottle. The sampling tubing was replaced with silicone tubing.
I have removed the vinyl tubing from our inventory and informed all sampling personnel of the proper hardware to use
and went over the proper sampling procedures.
I hope this helps to answer any questions concerning the high levels of 2-ethylhexyl phthalate that appeared in the last
two annual pollutant scans.
Thank you,
Arthur L Hough
City of Havelock
WwTP Supervisor
Office: 252-444-6421
Fax- 252-444-6434
Cell- 252-671-6373
1

RE1L GA?/a k/
Mr. Charles H. Weaver
NC DENR / DWQ / NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: City of Havelock
PO Box 368
Havelock, NC 28532-0368
NPDES Permit Renewal Permit No. NC00021253
December 13, 2012
Mr. Weaver,
Enclosed is a NPDES permit renewal application package for the City of Havelock
Wastewater Treatment Plant (WWTP). The application is a renewal request with no
changes to the current active permit.
As part of the renewal process a list of improvements to the plant is requested since the
last issuance of the current permit. The current permit was issued March 12, 2012 and
for this reason there are only a few improvements made to the WWTP and they are as
follows:
The City has continued to camera and smoke collection lines in its ongoing effort to cut
down on inflow and infiltration flows. Several points of infiltration have been located
and were repaired, or are on the schedule to be repaired.
Bids for the phase 1 outfall project and sewer plant upgrades have been formally opened
and awaiting the Cities engineers, Hazen and Sawyer to review the proposals. This
construction is anticipated to begin April 01, 2013.
The application package includes the following information:
• This cover letter
• Completed NPDES Permit Application — Form 2A
• The results of the three latest pollutant scans

Page 2
• The results of 4 flat head minnow toxicity tests.
• A topographic map of the WWTP including a site map and a process flow
diagram.
• The Current Residuals Management Plan
• The Current Residuals Permit # WQ0000702.
If after review of the submitted renewal package you have any questions or concerns,
please do hesitate to contact me or other city representatives.
Sincerely,
James W Freeman
City Manager

Proposed Effluent Discharge Location 002
Constructed as Part of Phase 1 of WWTP Expansion
Lat 34° 57' 11 "
Long 76° 52' 37"
Influent Force Mans �.,.
Gravity Interceptors
Proposed 24-inch Effluent Pipe
0 02 01 0.0
M tes
0130905130906-0121eng1GISMWTP Location map-Figtre 1.mxd
Proposed Effluent Outfall Pipeline
Existing Effluent Discharge Location 001
Lat 34° 53' 20"
Long 76° 54' 30"
City of Havelock WWTP Site
HAZENAND SAWYER
/,/ Environmental Lngilleers & Scientists
i
Figure 1
WWTP Location Map
City of Havelock, NC
NC0021253
B.2 of Form 2A
February 14, 2011

E
RNA& CLARIFIER
NO.2
FINAL CLARIFIER
N0.1
3090t" sgure 2.cd•
BLOWER
eu wtt G
NO2 -
FINAL CLARIFIER
PUMPING STATION
SECOND STAGE
AERATION BASIN
N0.3
FILTER BACKWASH
WASTE DETENTION BASIN
WASTE SOLIDS HOLDING TANK
'WAS CONTROL STATION
BAR SCREEN
AND GRIT
REMOVAL
(BYPASS UNIT)
SECOND STAGE
AERATION BASINS
NO. 1&2
BAR
SCREEN
�o
INFLUENT
PUMPING STATIONS
0
GRIT REMOVAL
STABILIZED SOLIDS
HOLDING BASIN
SOLIDS
HANDLING
BUILDING
SLUDGE
U, PumPZNG
DISINFECTION STATION
BASI<V -11
REAERATION
BASIN
EFFLUENT
PUMPING STATION
Figure 2
WWTP Site Map
City of Havelock, NC
NC0021253
B.2 of Form

Plant Influent //// ///
Bar Screens
��//!/
Grit
Removal
Grit
0=1.4 mgd Q=2.8 mgd
--► �1 M i�S
ZirA Influent Pump
Stations
0=1.4 mgd 1 0=1.4 mgrl
•
Cascade
Aerator
Diffuser in
Neuse River
30906-012 Figure 3.cdr
Effluent Pump
Station
FBWR
First Stage
Aeration Basin
► Distribution
Box
Legend
FBW = Filter Backwash
FBWR = Filter Backwash Return
RAS = Return Activated Sludge
WAS = Waste Activated Sludge
TWAS = Thickened Waste Activated
Sludge
= Flow Meter
First -Stage Second -Stage
Aeration Basins Aeration Basins
RAS 0=1.4 mg('
Final Clarifier
Pump Station
c0=0.U9 mgn
Reaeration
Tank
FBW Waste
Detention Basin
4
UV Disinfection
FBW Q=0.09 mcvi
Methanol
i.4 nulls I
Q=0.012 ni Polymer
♦
V--
Stabilized TWAS Pumps
Solids Holding
Basin Q=0.007 rngd 0=0.019 mgd
Truck Hauling
to Land Application
4—
Denitrification
Filters
4--
f
Polyaluminum
Chloride
Final
Clarifiers
Q=2.8 rngct
Distribution
Box
M
Gravity Belt GBT Feed Pump Waste Solids WAS Control RAS Control
Thickener Holding Tank Station Station
0=0.019 mgd - Q=1.4 ma.1
Figure 3
WWTP Process Flow Diagram
City of Havelock, NC
NC0021253
B.3 of Form 2A

Residuals Management Plan
City of Havelock, North Carolina
Wastewater Treatment Plant
Overview and Summary
Solids in the form of waste activated sludge (WAS) from the WWTP currently undergo treatment
for eventual disposal as a land application product. This method of disposal is expected to
continue for the foreseeable future. As part of the Phase 1 expansion, the permitted treatment
capacity will increase from 1.9 mgd to 2.25 mgd. The residuals management system currently
has capacity to sufficiently manage residual volumes generated for a permitted plant capacity of
2.25 mgd; therefore, no upgrades to the residuals management system is required as part of the
Phase 1 expansion.
The solids thickening system provides thickening of settled WAS from the final clarifiers prior to
storage and disposal. WAS is removed from the final clarifiers and drained by gravity to the
68,000 gallon Waste Solids Holding Tank for short-term storage prior to thickening. The time
and duration of wasting and the wasting rate are controlled manually by pinch valves in the
WAS Control Station. Each clarifier has a separate wasting line and pinch valve in the WAS
Control Station for controlling WAS flow to the Waste Solids Holding Tank. Flow meters in the
WAS Control Station indicate WAS flow rate for each final clarifier. Submersible pumps rated at
220 gpm are provided in the Waste Solids Holding Tank for pumping WAS to the gravity belt
thickeners.
WAS is conveyed to the Gravity Belt Thickener (GBT), which is located in the Solids Handling
Building, through an 8-inch diameter pipeline. The GBT feed pumps, one duty and one standby,
pump WAS to in -line mixers, where the WAS mixes with polymer solution from the polymer feed
system prior to entering the GBT. The polymer -conditioned WAS is evenly distributed over the
GBT belt by an inlet distribution system, and the free water is drained from the conditioned
solids as they travel along the moving belt.
The GBT operates on the principle of separating free water from solids through gravity drainage
along a porous horizontal belt. Chemical conditioning of the solids with polymer is provided to
separate the flocculated solids from the free water. A feed chute spreads the conditioned solids
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evenly over the moving horizontal belt. Stationary columns on the belt's surface further
distribute solids on the belt and create furrows to speed drainage through the belt. A scraping
mechanism peels the thickened solids from the belt at the end of the GBT. The maximum GBT
solids loading rate is 1,000 lb/hr.
A concrete curb is provided to support the GBT and contain the filtrate from the thickener. Floor
drains connecting to a 6-inch pipeline convey filtrate from the GBTs to the influent pump
stations. A belt wash system is provided to clean the GBT belt and consists of a high pressure
pipe system with flat spray nozzles. The TWAS from the GBT is collected in a thickened solids
hopper, from which it is pumped to the Solids Stabilization Tank by two thickened waste
activated sludge (TWAS) pumps that each have a capacity of 80 gpm.
A 585,600 gallon stabilized solids holding basin is used to store thickened stabilized solids prior
to liquid land application on permitted privately -owned farmland. The holding basin provides
short -and long-term storage during periods when solids cannot be applied to the fields because
of wet weather or wet soil conditions. While being stored, the solids can be aerated to prevent
solids deposition and control odors. Air is provided to the stabilized solids holding basin by air
scour blowers for the denitrification filters. Lime can also be added to the stabilized solids
holding basin for additional solids stabilization or to minimize odors. Historically, the Class B
pathogen reduction and vector attraction reduction requirements have been met without the use
of the lime stabilization system.
Piping is provided for withdrawal of solids from the holding basin and to load the solids into a
truck. The solids to be land applied are drained to a truck loading station and then drained by
gravity or pumped by truck -mounted loading pumps to the land application trucks. Figure 1
illustrates the process and summarizes the tank detention time and capacities of the solids
management facilities.
2

Final
Clarifiers
WAS Control
Station
Q=55,600 gpd
Solids Stabilizing Tank
Capacity = 585,600 gallons
Storage Time = 71 days
v
JQQ____ Transport to
Land Application Site
30906.012 Figure 1.cdr
4
Waste Solids
Holding Tank
Capacity = 68,000 gallons
Detention Time = 1.22 days
4
GBT Feed
Pumps
Capacity =
220 gpm
(317,000 gpd)
Polymer
TWAS Pumps
Capacity = 80 gpm
(115,200 gpd)
Gravity Belt
Thickener
Capacity =
1,000 Ib/hr
Filtrate Returns to
Influent PS
via Gravity
Figure 1
Residuals Management Facilities
2.25 mgd Permitted Capacity
(Maximum Month)

Estimated Residuals Production Rate
Biological and enhanced nutrient removal systems are often associated with increased solids
production. This is because, generally speaking, more biomass exists per unit of wastewater
treated when compared with plants where nutrient removal is not required.
Solids production rates were calculated based on historic plant operations as well as projected
plant operations. A summary of the estimated average solids production rates associated with
current and Phase 1 conditions are presented in Table 1. Solids production rates are expected
to increase because of increased flow.
Table 1
Predicted Pre Digestion Solids Production Rates
Permitted
Phase
Flow (mgd)
WAS
Flow
(gpd)
Assumed
RAS
Concentration
(mg/L)
Solids
Generated
(Ib/d)
Dry
Tons
per
mgd
Current
1.37 (Avg. Day)
30,600
7,000
1,790
0.65
1
1.8 (Avg. Day)
40,200
7,000
2,350
0.65
1
2.25 (Max Month)
55,600
7,000
3,250
0.72
An evaluation of the GBT was completed to determine whether solids loading rates or hydraulic
loading rates controlled the operating time. A maximum solids loading rate of 1,000 Ib/hr was
used in the analysis, and the maximum hydraulic loading rate of 220 gpm was used coincident
with the capacity of one GBT feed pump. The results of the analysis are presented in Table 2
and assume solids processing occurs seven days a week. Based on this evaluation, the single
GBT can accommodate the plant's future solids processing needs.
Table 2
Predicted GBT Operating Time
Phase
Flow (mgd)
WAS Flow
(gpd)
Solids
(Ib/d)
1,790
Operating
Time with
1 GBT
(hrs/d)
1.79
Current
1.37 (Avg. Day)
30,600
1
1.8 (Avg. Day)
40,200
2,350
2.35
1
2.25 (Max Month)
55,600
3,250
3.25
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The existing solids storage tank has been utilized to hold solids for long periods of time when
land application is not available. Table 3 summarizes the predicted storage times available for
Phase 1 of the plant expansion. The percent TWAS is conservatively assumed to be 4.5%
although the plant currently achieves more than 5% on a regular basis. Higher percentage
solids achieved by the GBT results in increased storage time in the solids stabilization tank.
Table 3
Available Stabilized Solids Storage Time
Phase
Flow (mgd)
WAS
Flow
(gpd)
Assumed
TWAS
Solids
(%)
Volume
to
Stabilized
Solids
Storage
(gpd)
Storage
Available
(days)
Current
1.37 (Avg. Day)
30,600
4.5
4,520
130
1
1.8 (Avg. Day
40,200
4.5
5,940
99
1
2.25 (Max Day)
55,600
4.5
8,215
71
Estimated Land Application Rates
In the next five years the City of Havelock must be able to manage wastewater flows associated
with Phase 1. Table 4 provides the projected solids production that will be land applied in
Phase 1. Data from the Annual Land Application Certification Reports from 2010 and 2011 is
also summarized in the table. This data was used to estimate the volume of residuals produced
in Phase 1. Appendix A includes the current land application permit for the City of Havelock
WWTP. The current permitted capacity for the plant is 415 dry tons per year. As seen in
Table 4, the residuals generated in Phase 1 are within the current permitted capacity. In the
event that the City wishes to increase the annual volume of residuals that maybe land applied,
the City shall seek out additional land application sites and submit a permit modification
application package to the Division of Water Quality (DWQ) for approval of additional land
application sites and the new annual volume of residual that maybe land applied.
5

Table 4
Post Digestion Residuals Production
2010
1.368
269
0.54
1,076
2011
1.321
245
0.51
1,014
Phase 1 Capacity
(Approx. 2017)
1.8
362
0.55
1,096
It is important to note the difference in quantity between post digestion dry tons versus pre
digestion dry tons. During the treatment process, volatile solids reduction (VSR) takes place
where the volatile solids break down. Much of this process takes place during aerobic digestion
while in storage in the sludge holding basin. Due to the solids reduction the volume of material
that is land applied is less than the solids volume processed as WAS.
Class B Pathogen Reduction and Vector Attraction Reduction
The City of Havelock is using fecal coliform density (by analysis) to meet the Class B pathogen
reduction requirements (seven sample geometric mean < 2.0 MPN/ gram dry solids) and SOUR
(specific oxygen uptake rate) in the stabilized solids storage tank to demonstrate vector
attraction reduction (< 1.5 grams 02/hour-gram dry solids). Pathogen density levels and SOUR
levels are generally well below the Class B limits in the material. No material is land applied
until the material demonstrates Class B qualifications.
Appendix B summarizes the annual pathogen and vector attraction reduction data included in
the 2010 and 2011 Annual Land Application Certification reports. This data shows that the City
generally achieves fecal coliform levels below 2,000,000 MPN/gram and SOUR values below
1.5 mg Oxygen/gram/hour. During colder months the fecal coliform density and SOUR values
are higher than warmer months. However, even the cooler months the Class B limits are
normally achieved at the time of sampling. This quality of residuals is not anticipated to change
with increased volume as wastewater characteristics and treatment methods will not be
significantly altered in Phase 1.
Appendix C includes a soils analysis from the 2010 and 2011 permitted land application sites.
6