NC0032077_Permit (Issuance)_20141023

NPDES DOCYldENT :MCANNINO COVER SHEET
NPDES Permit:
NC0032077
Contentnea MSD WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
October 23, 2014
This document is printed on reuse paper - ignore any
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11,
`•1r
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
October 23, 2014
Charles Smithwick, Jr.
District Manager
Contentnea Metropolitan Sewerage District
P. O. Box 477
Grifton, NC 28530
Subject: Issuance of NPDES Permit
Permit NC0032077
Contentnea MSD WWTP
Pitt County
Class IV
Dear Mr. Smithwick:
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 from Existing Permit
1) The 2.85 MGD limitation page, the chronic toxicity 11% test concentration for 2.85 MGD, and
the total residual chlorine requirement were removed from this permit. Technical corrections
were made to remove requirements no longer applicable [See A.(1.)].
2) Total copper and total zinc monitoring was removed from this permit. The reasonable potential
analyses (RPA) predicted values less than 50% of the water quality based limits, thus,
monitoring was removed [See A.(1)].
3) Cyanide monitoring and limits were removed from this permit. There were no detected values,
thus, requirements were removed [See A.(1.)].
4) The Effluent Pollutant Scan seasonal monitoring requirement was reduced to three scans in
designated years stated in the special condition prior to the next renewal. A new narrative was
added to the special condition to alert the Permittee that four seasonal second species toxicity
tests are require with the next renewal. The special condition narrative was amended to match
the US EPA requirements [See special condition A.(7.)].
5) A Mercury Minimization Plan (MMP) special condition was added to this permit and requires
development and submittal of the MMP no later than 180 days from the final permit effective
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet: www.ncwaterquality.org
An Equal OpportunitylAffrmative Action Employer

Charles Smithwick, Jr., District Manager
October 23, 2014
Page 2 of 2
date. The US EPA approved statewide Mercury TMDL was implemented in this permit. [See
special condition A.(9.)].
6) Electronic DMR reporting special condition was added to this permit and requires
implementation no later than 270 days from the final permit effective date. The US EPA
guidance for electronic reporting was implemented in this permit [See special condition A.(8.)].
7) Narratives in Supplement to Permit Cover Sheet and Chronic Toxicity special condition were
updated in this permit. Technical corrections were made to update narratives [See Supplement
to Permit Cover Sheet and special condition A.(6.)].
8) Instream monitoring requirement was moved to separate special condition. Technical
correction was made to list instream monitoring requirements in a separate special condition
[See special condition A.(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,
64Thomas 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)
Central Files
NPDES File

Permit NC0032077
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,
Contentnea Metropolitan Sewerage District
is hereby authorized to discharge wastewater from a facility located at the
Contentnea MSD WWTP
900 Wiley Gaskins Road, Grifton
Pitt County
to receiving waters designated as Contentnea Creek in the Neuse River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts
I, II, III, and IV hereof.
The permit modification shall become effective on December 1, 2014.
This permit and the authorization to discharge shall expire at midnight on November 30, 2019.
Signed this day October 23, 2014.
iget/ omas A. Reeder, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 13

Permit NC0032077
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions described herein.
Contentnea Metropolitan Sewerage District
is hereby authorized:
1. To continue to operate an existing 3.5 MGD wastewater treatment facility consisting of:
• mechanically cleaned bar screen with manual bypass bar screen
• grit removal system
• influent meter
• influent composite sampler
• influent distribution box
• two (2) 0.65 MG EQ basins
• six (6) 0.15 MG anaerobic tanks with mixers
• four (4) 0.65 MG pre -anoxic tanks with mixers
• two (2) 1.8 MG oxidation ditches with aerators
• four (4) 0.3 MG post anoxic tanks with mixers
• four (4) 0.1 MG reaeration tanks with fine bubble diffusers
• four (4) 20 HP blowers
• clarifier influent distribution box
• two (2) 90 ft diameter clarifiers with scum pump station with two (2) 150 GPM pumps
• filter lift station with four (4) 2,030 GPM filter feed pumps
• four(4) denitrification filters systems with two (2) 3,040 GPM backwash pumps, two (2) 570
GPM mudwell pumps, and three (3) 100 HP backwash aeration blowers
• three (3) banks UV disinfection system
• post aeration tank with 10 HP aerator
• effluent meter
• effluent composite sampler
• caustic chemical feed system
• methanol storage and chemical feed system
• alum addition system
• sludge pump station with two (2) 2,430 GPM circulation pumps and two (2) 500 GPM waste
transfer pumps
• 0.375 MG aerated sludge holding/decant tanks
• two (2) 0.345 MG aerated sludge holding/decant tanks
• four (4) 55 ft diameter sludge stabilization tanks with coarse diffusers
• two (2) 0.36 MG sludge storage basins with mixers
• three (3) 50 HP blowers
• two (2) 300 GM land application transfer pumps
• sludge loading station with 500 GPM pump
• two (2) sludge dewatering screw press with 100 GPM feed pumps
• polymer chemical feed system
Page 2 of 13

Permit NC0032077
PartI
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
a. Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized
to discharge treated wastewater from Outfall 001 into Contentnea Creek. Such discharges shall be
limited and monitored' by the Permittee as specified below:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
• Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 2
Flow
3.5 MGD
Continuous
Recording
E
Total Monthly Flow, MG 3
Monitor and Report
Monthly
Recorded or
Calculated
E
BOD5, 20°C 4
15.0 mg/L
22.5 mg/L
Daily
Composite
I, E
Total Suspended Solids 4
30.0 mg/L
45.0 mg/L
Daily
Composite
I, E
NH3 as N
(April 1 - October 31)
6.0 mg/L
18.0 mg/L
Daily
Composite
E
NH3 as N
(November 1 - March 31)
12.0 mg/ L
35.0 mg/ L
Daily
Composite
E
Fecal Coliform
(geometric mean)
200/100
mL
400/100
mL
Daily
Grab
E
pH
Not less than 6.0 S.U. nor more than
9.0 S.U.
Daily
Grab
E
Dissolved Oxygen
Not less than 5.0 mg/L, daily average
Daily
Grab
E
Temperature, ° C
Daily
Grab
E
Total Phosphorus
2.0 mg/L (Quarterly average) 5
Weekly
Composite
E
TKN, mg/L 6
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N, mg/L 6
Monitor and Report
Weekly
Composite
E
Total Nitrogen, mg/L 3'6
Monitor and Report
Weekly
Composite
E
TN Load 3
Monitor and Report (lb./mo.)
37,100 lb/yr 7
Monthly
Annually
Calculated
E
Conductivity, µmho/cm
2/Month
Grab
E
Chronic Toxicity 8
Quarterly
Composite
E
Effluent Pollutant Scan
See Footnote 9
E
Footnote:
1. No later than 270 days from the effective date of this permit, begin submitting discharge
monitoring reports electronically using NC DWR's eDMR application system. See Special
Condition A. (8.) ELECTRONIC REPORTING OF DISCHARGE MONITORING
REPORTS for details.
2. Sample Locations: I = Influent; E = Effluent.
Page 4 of 13

Permit NC0032077'.
(Continued SUPPLEMENT TO PERMIT COVER SHEET)
• nine (9) 20 ft x 96 ft drying beds, 2 with concrete floors, with liquid drain collection system
• backup electrical generator
This facility is located at the Contentnea MSD WWTP on Wiley Gaskins Road in Griffon, Pitt
County.
2. To discharge from said treatment works at the location specified on the attached map into
Contentnea Creek, which is classified C-Swamp NSW waters in the Neuse River Basin:
Page 3 of 13

6-
Permit NC0032077
(Continued A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS) -
3. TN Load is the mass quantity of Total Nitrogen discharged in a given period of time and
requires Total Monthly Flow and monthly Total Nitrogen data. See Special Condition A.(3.)
CALCULATION OF NITROGEN LOADS for details.
4. Monthly average effluent BOD5 and total suspended solids (TSS) concentrations shall not
exceed 15% of their respective influent value (i.e., 85% removal is required).
5. Quarterly average for Total Phosphorus shall constitute the average of composite samples
collected weekly during each calendar quarter (January -March, April -June, July -September,
October -December).
6. 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 and nitrite nitrogen,
respectively.
7. Compliance with this limit shall be determined in accordance with Special Condition A.(4.)
ANNUAL LIMITS FOR TOTAL NITROGEN.
8. Chronic Toxicity (Ceriodaphnia) P/F @ 13%, January, April, July, and October. See Special
Condition A. (6.) CHRONIC TOXICITY PERMIT LIMIT for details.
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit in
the years designated; see Special Condition A.(7.) EFFLUENT POLLUTANT SCAN for
designated years and other details.
b. Final discharge shall contain no floating solids or foam visible in other than trace amounts.
Page 5 of 13

Permit NC0032077
A.(2.) INSTREAM MONITORING REQUIREMENTS
a. Instream monitoring is required for the following parameters at the locations specified:
EFFLUENT
CHARACTERISTICS
MEASUREMENT FREQUENCY
SAMPLE
TYPE
SAMPLE 1
LOCATION
Dissolved Oxygen
June -Sept
3/week
Grab
U, D
October -May
1/week
Temperature
June -Sept
3/week
Grab
U, D
October -May
1/week
Conductivity
June -Sept
3/week
Grab
U, D
October -May
1/week
Footnotes:
1. Sample Locations: U = Upstream at NCSR 1800; D = Downstream at Jolly's Old Field
Landing.
b. Instream monitoring is provisionally waived in light of the permittee's participation in the Lower
Neuse Basin Association. Instream monitoring shall be conducted as stated in this permit should
the permittee ends its participation in the Association.
A.(3.) 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.(4.) 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.
Page 6 of 13

Permit NC0032077
(Continued A.(4.) ANNUAL LIMITS FOR TOTAL NITROGEN)
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.
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 / NPDES Programs
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.
ii. 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)
(B)
Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
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.(5.) 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.
Page 7 of 13

Permit NC0032077
(Continued A.(5.) TOTAL NITROGEN ALLOCATIONS)
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT 1
STATUS
Estuary
(lb/yr)
Discharge
(lb/yr)
Base
Assigned by Rule
(T15A NCAC 02B .0234)
12/7/97;
4/1/03
22,470
32,100
Active
Supplemental
Purchased from UNIFL
LLC, NC0003760
3/17/10
3,500
5,000
Active
(eff. 1/1/11)
TOTAL (through 12/21/10)
22,470
32,100
Active
TOTAL (through 1/1/11)
25,970
37,100
Active
Footnote:
1. Transport Factor = 70%
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.(6.) 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 13%.
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:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Page 8 of 13

Permit NC0032077
(Continued A.(6.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY))
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, 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.
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 9 of 13

Permit NC0032077
A.(7.) 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: 2016, 2017, and 2018. 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)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
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 (Method 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
Reporting. Test results shall be reported on DWR Form -A MR-PPA1 (or in a form approved by the Director)
by December 31s` 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 10 of 13

Permit NC0032077
(Continued A.(7.) EFFLUENT POLLUTANT SCAN)
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four (4) toxicity tests for a test organism other than the test species currently •
required in this permit. The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal of the permit renewal application, or four tests performed at least annually in
the four and one half year period prior to the application. These tests shall be performed for acute or
chronic toxicity, whichever is specified in this permit. The multiple species toxicity test results shall be
filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal
application to the NPDES Permitting Unit.
A. (8.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
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
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, 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:
Page 11 of 13

Permit NC0032077 -
(Continued A.(8.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
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)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certi, 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 f nes and imprisonment for knowing violations."
Page 12 of 13

Permit NC0032077
' (Continued A.(8.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
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. (9.) 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.
Page 13 of 13

Contentnea Metropolitan
Sewerage District WWTP
O. Wiley Gaskins Road
1°----_-FiadiQ_To_
SCALE: lin = 24,000ft
USGS Quad: F29SW Grifton, NC
Outfall Facility
Latitude: 35° 21' 5.5" N 35° 21' 37" N
Longitude: 77° 24' 58.5" W 77° 24' 57" W
Stream Class: C, Sw, NSW
Subbasin: 03-04-07 HUC: 03020203
Receiving Stream: Contentnea Creek
North
Facility Location
Contentnea Metropolitan Sewerage District WWTP
NC0032077 Pitt County

DENR/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES PERMIT NC0032077
Facility Information
Applicant/Facility
Name:
Contentnea Metropolitan Sewerage District/ Contentnea MSD
WWTP
Applicant Address:
P. O. Box 477; Grifton, NC 28530
Facility Address:
900 Wiley Gaskins Road; Grifton, NC 28530
Permitted Flow:
3.5 MGD
Type of Waste:
99% domestic/1% industrial
Facility/Permit Status:
Class IV/Active; Renewal
County:
Pitt County
Miscellaneous
Receiving Stream:
Contentnea Creek
Stream Classification:
C, Sw, NSW
Subbasin:
03-04-07
Index No.
27-86-(7)
Drainage Area (mi2):
1000
HUC:
03020203
Summer 7Q10 (cfs)
36.0
303(d) Listed?:
No
Winter 7Q10 (cfs):
72.0
Regional Office:
Washington
F29SW
Grifton, NC
30Q2 (cfs):
120.0
State Grid / USGS
Quad:
Average Flow (cfs):
1090
Permit Writer:
Ron Berry
IWC (%):
13%
Date:
8/22/14
BACKGROUND
Contentnea Metropolitan Sewerage District (CMSD) operates a regional 3.5 MGD wastewater
treatment facility that serves a portion of Pitt County and surrounding communities including 5
industrial facilities, one which is a categorical industry, and has an approved pretreatment
program. The CMSD WWTP discharges treated wastewater to Contentnea Creek, a class C, Sw,
NSW water in the Neuse River Basin.
This facility is an active member of the Lower Neuse Basin Association and as a result instream
monitoring is waived. The first downstream monitoring station from this discharge is after the
confluence of Contentnea Creek with the Neuse River. CMSD WWTP is also a member of the
Neuse River Compliance Association.
2010 — Renewal permit issued: Consisted of two limitation pages for 2.85 MGD, each one
specific to the specific outfall location; compliance date of November 1, 2010 to
complete plant upgrades and to relocate outfall from "zero" flow unnamed tributary to
Contentnea Creek.
- Issued a speculative limit letter for 3.5 MGD, 4.0 MGD, and 5.0 MGD as a discharge to
Contentnea Creek.
- Received Engineer Certificates for completion of construction under ATC032077A01
permit which included completion of upgrades and relocation of the outfall to
Contentnea Creek.
- Issued permit modification to remove the retired 2.85 MGD limitation page with
discharges to the unnamed tributary and to add the recently purchased 3,500 pounds
estuary —based total nitrogen to the permit annual allocation.
2011— The US EPA issued an Administrative Order CWA-04-2011-4783 as the result of NPDES
effluent limit violations beginning in January 2008, in 2009, and ending October 2010
for BOD, TSS, Fecal Coliform, Cyanide, and Flow. The order included a list of
repairs/upgrades and construction activities, on site and in the collection system, with
Fact Sheet
NPDES NC0032077
Page 1 of 6

specific milestone and reporting date to bring this facility into final compliance by
March 31, 2014.
2012 — Issued a permit modification to add expansion limitation page for 3.5 MGD.
- Issued ATC032077A02 permit for facility upgrades to comply with the EPA
Administrative Order and for an expansion to 3.5 MGD.
- Received permit renewal application.
2014 — Received Engineer Certificate for completion of construction under ATC032077A02
permit. Permit expansion page for 3.5 MGD was activated.
PROCESS
Untreated domestic waste is introduced via a forced main to the plant headworks consisting of a
mechanical bar screen, bypass screen, and grit removal system. Wastewater then flows through
the influent flow meter, through the distribution box where it can be distributed to the dual train
5 stage BNR treatment systems and/or to two EQ basins. An influent composite sampler collects
samples. Caustic is added by a chemical feed system to the influent.
Wastewater is distributed to the BNR's anaerobic stage, anoxic stage, oxidation stage, post -
anoxic stage, re -aeration stage, and into the clarifier's flow splitter box. Mixers, aerators, and air
diffusers systems support/enhance the various treatment operations in the BNR system. Alum is
added at the post -anoxic tanks. The effluent from the two secondary clarifiers combines and
collects in the filter pump station. From the pump station the wastewater is distributed to four
denitrification filters, recombines and passes through a UV disinfection system, the post aeration
tank, the effluent flow meter weir, and then flows into the gravity outfall line discharging into
Contentnea Creek. Methanol is added to the filters influent. A composite sampler collects
effluent samples from the outlet end of the post aeration tank. A portion of the treated
wastewater can be diverted to a permitted spray irrigation system.
Sludge is collected and transferred to several available basins and tanks where additional
digestion and dewatering steps occur. The sludge can be loaded on trucks, transferred to screw
presses for further dewatering and solid disposal, transferred to drying beds, or pumped directly
to its permitted land application. Two of the original drying beds were converted to concrete
pads to accept waste materials from trucks. The collected waste/decanted water from the drying
beds and dewatering operation is returned to the headworks. Polymer can be added when needed
for the screw press dewatering operation. Additional mixers and air diffusers systems are
available in the basins and tanks for the digestion operations.
COMPLIANCE
Since 2010 there were 2 NPDES permit fecal coliform limit violations which did not result in
further assessment. In 2011 the facility was assessed and paid $8,209 for failure to implement its
pretreatment program correctly. The last reported sewer overflow was 1,800 gallons in 2012 as
the result of a sewer main brake.
DATA REVIEW
DMRs were reviewed for the period of February 2012 to February 2014. DMR data is
summarized in Table I below:
Table I: DMR Dat Evaluation * based on monthly average
Flow*
(MGD)
BOD*
(mg/L)
TSS*
(mg/L)
NH3-N*
(mg/L)
*Fecal
Coliform
(#//100 ml)
pH
(S U)
Dissolved
Oxygen
(mg/L)
Average
1.915
3.75
2.92
0.76
44.54
7.02
8.32
Maximum
2.60
7.1
4.8
2.8
483.1
7.9
11.5
Minimum
1.26
2.1
2.5
< 0.1
1.8
6.1
6.5
Fact Sheet
NPDES NC0032077
Page 2 of 6

Percent Removal: Based on BOD 94.8%-98.5%, Based on TSS 96.7% - 99.2%
Chronic Toxicity
The facility has passed 23 out of 24 chronic ceriodaphnia dubia toxicity tests conducted since
July 2008. Four additional 2" species chronic fathead minnow toxicity tests were submitted with
the renewal application and were passed.
Nutrients
DMR data from February 2012 to February 2014 was reviewed for Total Phosphorus and Total
Nitrogen, and is summaries in Table II:
Table II: Total Phosphorus and Total Nitrogen Concentrations
Total Phosphorus
Quarterly Average
(mg/L)
Total Nitrogen
Monthly Average
(mglL)
Average
0.589
1.707
Maximum
1.15
3.86
Minimum
0.25
0.95
Total Nitrogen Loads of 8,019 lbs/yr and 11,135 lbs/yr were reported for 2012 and 2013
respectively.
Instream Monitoring
Reviewed of DO historical levels at the closest monitoring stations upstream and downstream
from the confluence of Contentnea Creek with the Neuse River, and upstream from the discharge
on Contentnea Creek indicate very little influence from this discharge. The instream data is more
consistent with a swamp class water body.
PERMITTING STRATEGY
Reasonable Potential Analysis (RPA)
The Division conducted EPA -recommended reasonable potential analyses for detected toxicants
discharged by this facility, based on DMR data from February 2012 to February 2014 and from
the 3 Priority Pollutant Analyses (PPA) submitted with the renewal application. Evaluations
were conducted for chromium, copper, nickel, and zinc.
Chromium, copper, nickel, and zinc had no reasonable potential to exceed their water quality
based limits, and their predicted values were less than 50% of their water quality based limits.
No detected levels were reported for cyanide. Based on RPA guidance the permit's:
a) copper and zinc monitoring will be removed,
b) cyanide monitoring and limits will be removed, and
c) neither chromium nor nickel monitoring are warranted.
Other monitoring requirements for these parameters are governed by the pretreatment program
and the PPA.
Whole Effluent Toxicity Limit
The recently activated expansion 3.5 MGD page requires quarterly chronic toxicity testing using
ceriodaphnia dubia at 13% effluent concentration. The effluent concentration also defines the
pass/fail limit. An updated narrative with only reference to the required 13% test concentration
will replace the current special condition narrative.
Priority Pollutant Analysis
The results of 3 PPA were submitted with the permit renewal application. See RPA Analysis for
results. An updated narrative will replace the current narrative and will only require 3 seasonal
PPAs be submitted prior to the next renewal in designated years, and includes a new narrative for
completing the required 2" species testing.
Fact Sheet
NPDES NC0032077
Page 3 of 6

Mercury TMDL Evaluation
A state wide mercury TMDL was approved by US EPA in October 2012 and will be
implemented in this permit. Table III summaries the available mercury data used to determine
requirements:
Table III: Mercury Data Statistics (Method 1631 E
2010
2011
2012
2013
2014
# of Samples
4
6
4
4
1
Annual Average
Concentration, ng/L
5.5
0.7
< 0.5
< 0.5
< 0.5
Maximum Sample
Result, ng/L
8.7
1.1
< 0.5
< 0.5
< 0.5
TBEL, ng/L
47
WQBEL, ng/L
91.6
Per mercury TMDL guidance, if there is no exceedance of the TBEL by any individual values
and there is no exceedance of the WQBEL by any annual averages as in this case then no
mercury limit is required, and mercury monitoring (Method 1631E) can be reduced to the 3
required PPAs. In addition, since there are multiple mercury measurements above 1 ng/L, and
this is a major municipal facility with a permitted flow greater than 2.0 MGD, a special condition
requiring the facility to develop a mercury minimization plan will be added.
Nutrients
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).
Fact Sheet
NPDES NC0032077
Page 4 of 6

Nitrogen. Under the new rule, the Permittee receives a TN Load limit of 37,100 lb/yr, a
calendar year limit. The limit reflects the Permittee's original allocation plus additional
allocation purchased from Unifi, LLC in 2010.
The Permittee 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. However, under the Association by-laws this facility could still be
subject to assessments by the Association if it exceeds its individual allocation.
Phosphorus. The Permittee's quarterly average 2.0 mg/ L Total Phosphorus limit is carried
forward in the new permit to conform with the new rule.
Electronic DMR Compliance
A special condition and footnote were added for electronic DMR reporting to begin no later than
270 days from effective date of final permit to comply with US EPA directive.
SUMMARY OF LIMITS AND CONDTIONS
Receiving Stream: Contentnea Creek Class:
C, Sw, NSW
Treated primary domestic and some industrial wastewater (99%/1%), permitted for 3.5 MGD
Treatment: BNR, UV disinfection (chlorination reuse water)
Parameters (uoM as noted)
Limits
Bases of Permit Limit
BOD, mg/L
15.0 monthly avg
22.5 weekly avg
WQ Waste Load Allocation
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)
6.0 monthly avg
18.0 weekly avg
WQ Waste Load Allocation
(winter)
12.0 monthly avg
35.0 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
37,100 & compliance association
15A NCAC 02B .0234
TP, mg/L
2.0 quarterly avg
15A NCAC 02B .0234
Chronic toxicity, P/F
Limited
P/F quarterly, 13% concentration
NCDENR toxicity strategy, WQ
Comments/Changes
to develop a
condition added for
comply with US
added for eDMR.
Reduced frequency
Mercury Minimization Plan (MMP) 180 days from the effective day
MMP.
EPA directive 270 days from effective date of permit, special
to 3 seasonal scans in designated years by submittal of the next
to effluent pollutant scan special condition for 2nd species
based on RPA guidance.
narratives updated.
and was removed.
from permit.
condition.
1. Mercury TMDL: Permittee
of the permit,
2. eDMR:
special
Permittee to
and footnote
Pollutant Scan:
condition
3. Effluent
permit renewal application. Added narrative
testing requirement.
4. Copper, cyanide, and zinc monitoring removed
5. Component list and other special condition
6. TRC conditional requirement not warranted
7. Effluent limit page for 2.85 MGD removed
8. Instream monitoring moved to separate special
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: August 27, 2014
Permit Scheduled to Issue: October 2014
Fact Sheet
NPDES NC0032077
Page 5 of 6

NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Ron Berry at (919 07-6396 or email [e-mail].
NAME: 0-11 ry DATE: $' ZZ-Ir
REGIONAL OFFICE COMMENTS
NAME: DATE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NC0032077
Page 6 of 6

The Daily Reflector
P.O. Box 1967, Greenville, NC 27835-1967 [phone]
NCDENR
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
Legal Affidavit located below
CopyLine:
Lines: 35
Total Price: $76.10
Pay this amount due in 10 days
ssue NPDES Wastewater Permit
Account: 146891 AD ID: 8406669
PUBLISHER'S AFFIDAVIT
NORTH CAROLINA
PITT COUNTY:
Susan Steel affirms that she is clerk of The Daily Reflector, a newspaper published daily at Greenville, Pitt County, North
Carolina, and that the advertisement, a true copy of which is hereto attached, entitled Issue NPDES Wastewater Permit
was published in said The Daily Reflector on the following dates:
Friday, August 29, 2014 Page: C6
and that the said newspaper in which such notice,
paper, document or legal advertisement was published,
was at the time of each and every publication, a
newspaper meeting all of the requirements and
qualifications of Chapter 1, Section 597 of the General
Statutes of North Carolina and was a qualified
newspaper within the meaning of Chapter 1, Section
597 of the General Statutes of North Carolina.
Affirmed and subscribed before me this 29 day
of August 2014
POCtLL
(Notary Public Signature )
zix b61-4 POo
(Notary Public Printed Name)
My commission expires
SW NOTARY 5'
PUBLIC
AD ID: 8406669
Public Notice
North Carolina Environmental Man-
agement Commission/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES
Wastewater Permit
The North Carolina Environmental Man-
agement Commission proposes to issue •
a NPDES wastewater discharge permit
to the person(s) listed below. Written
comments regarding the proposed per-
mit will be accepted until 30 days.after
the publish date of this notice. The
Director of the NC Division of Water
Resources (DWR) may hold a public
hearing should there be a significant
degree of public interest. Please mail
comments and/or information requests
to DWR at the above address. Inter-
ested persons may visit the DWR at 512
N. Salisbury Street, Raleigh, NC to
review information on file. Additional
information on NPDES permits and this
notice may be found on our website:
httpalporta I.ncdenr.org/web/wglswp/ps/
npdeskalendar, or - by calling (919)
807-6304. Contentnea Metropolitan
Sewerage District requested renewal of
permit NC0032077 for its WNTP in Pitt
County; this discharge is for treated
domestiaindustrial wastewater to Con-
tentnea Creek, Neuse River Basin.
August 29, 2014

. Berry, Ron
From: Berry, Ron
Sent: Friday, August 22, 2014 9:12 AM
To: Sipe, Randy
Cc: Tankard, Robert; Burke, Don
Subject: RE: Proposed draft permit fro CMSD WWTP NC0032077
Randy,
I talked to Charles Smithwick, the existing drying beds drains are still connected to the system even though they do not
use the drying beds but they could be used if needed. Two of the beds were converted to dewatering pads to accept
materials from vacuum trucks (installed concrete floors sloping to drain). From a permit narrative description the drying
beds are still considered part of the treatment components. If there is a maintenance issue I recommend the region
follow up with the permittee.
Thanks for the comments,
Ron
From: Sipe, Randy
Sent: Thursday, August 21, 2014 4:29 PM
To: Berry, Ron
Cc: Tankard, Robert; Burke, Don
Subject: RE: Proposed draft permit fro CMSD WWTP NC0032077
Ron,
The only comment that WaRO has on the draft permit deals with the inclusion of the drying beds in the facility
description. The drying beds have not been used in years and are currently not operational. It would require significant
work for them to actually be usable.
Randy Sipe, P.G.
Hydrogeologist
Division of Water Resources
Water Quality Regional Operations Section
Washington Regional Office
[phone]
Note: All e-mail sent to and from this account are subject to the North Carolina Public Records Law and may be disclosed
to third parties
From: Tankard, Robert
Sent: Thursday, August 21, 2014 10:34 AM
To: Burke, Don; Sipe, Randy
Subject: FW: Proposed draft permit fro CMSD WWTP NC0032077
Don and Randy, please review the draft permit and if any comments please comment to Ron Berry. Randy, please
consolidate the comments.
Thanks!
Robert
Robert Tankard
1

Assistant Regional Supervisor
Division of Water Resources
Water Quality Regional Operations Section
943 Washington Square Mall
Washington, NC 27889
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
http://www.ncwater.ore
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: May, David
Sent: Tuesday, August 19, 2014 4:25 PM
To: Tankard, Robert
Cc: Burke, Don; Bullock, Robert
Subject: FW: Proposed draft permit fro CMSD WWTP NC0032077
David May
Regional Supervisor
Division of Water Resources
Water Quality Regional Operations Section
943 Washington Square Mall
Washington, NC 27889
Phone: [phone]
Fax: [phone]
E-mail: david.may(ncdenr.gov
http://www.ncwatenord
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Berry, Ron
Sent: Tuesday, August 19, 2014 2:58 PM
To: May, David; Bullock, Robert
Subject: Proposed draft permit fro CMSD WWTP NC0032077
David and Robert,
Attached is the pre -public notice draft permit currently under peer review for CSMD WWTP. Please review and
comment. You will also receive the public noticed draft for comment. Tentatively this permit is scheduled to go out for
public notice August 27t"
Thanks,
Ron
Ron Berry, Engineer
Division of Water Resources/NCDENR
2

77°29�1p/
!.l46. 2
Camel
Landing
LOACTION OF MONITORING STATIONS— NEUSE RIVER BASIN
w4te
NC0032077
DISCHARGE
77'18
G8rd:t rville
.52"N ,.
. . r Wests
Cxnssroads

Contentnea MSD WWTP 2014 Freshwater RPA - 95% Probability/95% Confidence Outfatt 001
NC0032077
Qw (MGD) = 3.50
1Q1OS (cfs) = 29.60
7Q 1 OS (cfs) = 36.00
7QI OW (cfs) = 72.00
30Q2 (cfs) = 120.00
Avg. Stream Flow, QA (cfs) = 1090.00
Receiving Stream: Contentnea Creek
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: IV
IWC (u31Q10S = 15.488936%
IWC @ 7Q 1 OS = 13.095957%
IWC t 7QIOW = 7.006781%
IWC @ 30Q2 = 4.325294%
IWC Q QA = 0.495242%
Stream Class: C, Sw, NSW
Qw = 3.5 MGD
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
-J
a
N
1—
Z
'
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS /
Chronic
Applied
Standard
�/2 FAV /
Acute
n
# Det. Max Pred
Allowable Cw
Cw
Arsenic
Arsenic
C
C
50
10
FW(7Q10s)
HH/WS(Qavg)
ug/L
ug/L
0
0
0
0
N/A
N/A
Acute: NO WQS
Chronic: 381.8
Chronic: 2,019.2
nodetects— — - --_--
no detects
Beryllium
NC
6.5
FW(7Q10s)
ug/L
0
0
N/A
Acute: NO WQS
__ ________ ____
Chronic: 49.6
_ ____.
nadetects
Cadmium
NC
2
FW(7Q10s)
15
ug/L
0
0
N/A
Acute: 96.8
_ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 15.3
no detects
_ _
- _ --—
no detects --
Chlorinated Phenolic Compounds
NC
1
A(30Q2)
ug/L
0
0
N/A
Acute: NO WQS
Chronic: 23.1
'
' — — --
noydetects
Total Phenolic Compounds
NC
300
A(30Q2)
ug/L
0
0
N/A
Acute: NO WQS
Chronic: 6,935.9
,
rib detects•
Chromium
NC
50
FW(7Q10s)
1022
ug/L
18
2
6.0
Acute: 6,598.3
Chronic: 381.8
No value > Allowable Cw
No RP,'Predicted Max <'50% orAliowable:Cw- No. ;
Monitoring°required", •..
NoRP, Predicted:Max < 50% ofo-Aliowable Gw .:No
Moniforingir ,quirsd„ __
Copper (AL)
NC
7
FW(7Q10s)
7.3
ug/L
55
9
15.2
Acute: 47.1
_ _ _ _ _ _ _ _ _ _
Chronic_ 53.5
No value > Allowable Cw
NoRP 'PfedldtedrMax< 50% ofAIId bte;Cw No
MonJtopng� a 03..
Nb=RP, Predicted MaS <r50%.of'Allowabld Oh.- No-
Mdf itorfnd.rezquired:.. .............. - - _-. _ . _ _ __ .. i
Cyanide
NC
5
FW(7Q10s)
22
10
ug/L
0
0
N/A
Acute: 142.0
_ _ _ _ _ _ _ _ _
Chronic 38.2
Kiktietects .NVoaRP remove monitoring„conttnue j
mon torr1ng�ln L' 'KI(P.:PPAs . - .... ; :" .
rion`detects,1No1�A ret iove;monitoiing,=continue.
moriitonng,irt LIMP PPA
Lead
NC
25
FW(7Q10s)
33.8
ug/L
0
0
N/A
Acute: 218.2
_ _ _ _ _ _ _ _
Chronic: 190.9
no de3ecis '
,
no'detecter,•
Page 1 of 2
9595 FRESHWATER RPA2014 3.xlsm, rpa
8/22/2014

Contentnea MSD WWTP
NC0032077
2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
Outfall 001
Qw=3.5MGD
Mercury
NC
12
FW(7Q10s)
0.5
ng/L
0
0
N/A
Acute: NO WQS
Chronic:91.6
SEETMDL
Acute: NO WQS
no detects•
Molybdenum
NC
2000
HH(7Q10s)
ug/L
0
0
N/A
Chronic: 15,271.9
nodetects ,_ -- _— —_—_--------
Acute: 1,685.1
No: RP, Predicted Max<.50%-ofAilowable.Cw-NO:
Nickel
NC
88
FW(7Q10s)
261
ug/L
18
18
13.5
Monitoring,.required . - -
Chronic: 672.0
No RP, Predicted Max <:50% ofAllowable Cw:- No
No value > Allowable Cw
Monitortng'reg0ired : -
Acute: 361.5
'
no,,detects
Selenium
NC
5
FW(7Q10s)
56
ug/L
0
0
N/A
_ _ _ _ _ - _ - _ _ _ _ -
Chronic: 38.2
_
no.detects— -•
Sliver(AL)
NC
0.06
FW(7Q10s)
1.23
ug/L
0
0
N/A_
Acute: 7.941
no detects
Chronic: 0.458
no detects
Acute: 432.6
$ RP,:.Predicted, Max<'50% of Allowable.Cw- No~
Zinc (AL)
NC
50
FW(7Q10s)
67
ug/L
55
36
35.7
MOn torfrtg,"required: .
Chronic: 381.8
No RP, Predicted''Max < 50% of Allowable Cw- No-
No value > Allowable Cw
Monitoring, requiredi
9595 FRESHWATER RPA2014_3.xlsm, ? a
Page 2 of 2 8/22/2014

REASONABLE POTENTIAL ANALYSIS
8
Chromium
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Date Data BDL=112DL Results
1 3/24/2010 < 5 2.5 Std Dev. 0.8085
2 6/10/2010 < 5 2.5 Mean 2.7778
3 9/16/2010 < 5 2.5 C.V. 0.2910
4 12/15/2010 < 5 2.5 n 18
5
6 3/15/2011 < 5 2.5 Mult Factor = 1.19
7 5/19/2011 5 5 Max. Value 5.0 ug/L
8 Max. Pred Cw 6.0 ug/L
9 9/19/2011 < 5 2.5
10 10/13/2011 < 5 2.5
11 11/15/2011 5 5
12 1/5/2012 < 5 2.5
13 5/3/2012 < 5 2.5
14 7/11/2012 < 5 2.5
15
16
17 12/5/2012 < 5 2.5
18 3/13/2013 < 5 2.5
19 4/18/2013 < 5 2.5
20 8/1/2013 < 5 2.5
21 12/3/2013 < 5 2.5
22 3/5/2014 < 5 2.5
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
9
Copper (AL)
Date Data BDL=1/2DL Results
1 3/9/2012 < 10 5 Std Dev.
2 3/19/2012 < 10 5 Mean
3 4/2/2012 < 10 5 C.V.
4 4/17/2012 < 10 5 n
5 5/2/2012 2 2
6 5/8/2012 < 10 5 Mult Factor =
7 5/22/2012 < 10 5 Max. Value
8 6/5/2012 < 10 5 Max. Pred Cw
9 6/18/2012 < 10 5
10 7/2/2012 < 10 5
11 7/11/2012 3 3
12 7/16/2012 < 10 5
13 8/6/2012 < 10 5
14 8/20/2012 < 10 5
15 9/4/2012 < 10 5
16 9/18/2012 < 10 5
17 10/2/2012 < 10 5
18 10/17/2012 < 10 5
19 11/7/2012 15 15
20 11/19/2012 < 10 5
21 12/3/2012 < 10 5
22 12/5/2012 5 5
23 12/17/2012 < 10 5
24 1/8/2013 < 10 5
25 1/22/2013 < 10 5
26 2/4/2013 < 10 5
27 2/18/2013 12 12
28 3/4/2013 < 10 5
29 3/6/2013 3 3
30 3/18/2013 < 10 5
31 4/3/2013 < 10 5
32 4/15/2013 < 10 5
33 4/16/2013 5 5
34 5/6/2013 < 10 5
35 5/23/2013 < 10 5
36 6/4/2013 < 10 5
37 6/17/2013 < 10 5
38 7/6/2013 < 10 5
39 7/18/2013 < 10 5
40 8/1/2013 3 3
41 8/5/2013 < 10 5
42 8/22/2013 < 10 5
43 9/6/2013 < 10 5
44 9/19/2013 < 10 5
45 10/7/2013 < 10 5
46 10/21/2013 < 10 5
47 11/4/2013 < 10 5
48 11/21/2013 < 10 5
49 12/3/2013 3 3
50 12/4/2013 < 10 5
51 12/16/2013 < 10 5
52 1/6/2014 < 10 5
53 1/21/2014 < 10 5
54 2/3/2014 < 10 5
55 2/17/2014 < 10 5
56
57
58
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
1.7917
5.1091
0.3507
55
1.01
15.0 ug/L
15.2 ug/L
9595 FRESHWATER RPA2014_3.xlsm, data
- 2 - 6/23/2014

REASONABLE POTENTIAL ANALYSIS
15
Nickel
Date Data BDL=1/2DL
5
5
5
5
11
3/24/2010 <
6/10/2010 <
9/16/2010 <
12/15/2010 <
2/1 /2011
5/19/2011 <
6/8/2011 <
9/19/2011
11/15/2011 <
1/5/2012 <
5/3/2012 <
7/11/2012 <
12/5/2012
3/13/2013
4/18/2013
8/1/2013
12/3/2013
3/5/2014
10.0
10.0
10.0
10.0
11.0
10.0
10.0
11.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
5
5
11
5
5
5
5
5
5
5
5
5
5
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL
Values" then "COPY-
. Maximum data
points = 58
18
Zinc (AL)
1.9403
5.6667
0.3424
18
1.23
11.0 ug/L
13.5 ug/L
Date Data
3/9/2012 <
3/19/2012 <
4/2/2012
4/17/2012
5/2/2012
5/8/2012
5/22/2012
6/5/2012 <
6/18/2012
7/2/2012
7/11/2012
7/16/2012
8/6/2012
8/20/2012
9/4/2012 <
9/18/2012
10/2/2012
10/17/2012 <
11 /7/2012
11/19/2012
12/3/2012
12/5/2012
12/17/2012 <
1/8/2013 <
1/22/2013 <
2/4/2013
2/18/2013
3/4/2013
3/6/2013
3/18/2013
4/3/2013
4/15/2013
4/16/2013 <
5/6/2013 <
5/23/2013 <
6/4/2013 <
6/17/2013
7/6/2013 <
7/18/2013 <
8/1/2013 <
8/5/2013 <
8/22/2013
9/6/2013
9/19/2013
10/7/2013
10/21/2013
11/4/2013
11/21/2013
12/3/2013
12/4/2013 <
12/16/2013
1/6/2014
1/21/2014 <
2/3/2014
2/17/2014
BDL=1/2DL Results
10 5 Std Dev.
10 5 Mean
21 21 C.V.
12 12 n
12 12
12 12 Mult Factor =
12 12 Max. Value
10 5 Max. Pred Cw
13 13
15 15
11 11
20 20
22 22
14 14
10 5
13 13
17 17
10 5
13 13
20 20
21 21
21 21
10 5
10 5
10 5
17 17
10 10
17 17
22 22
G 0
13 13
11 11
10 5
10 5
10 5
10 5
12 12
10 5
10 5
10 5
10 5
23 23
16 16
32 32
25 25
15 15
35 35
12 12
34 34
10 5
18 18
31 31
10 5
26 26
31 31
Use"PASTE SF
Values" then "1
. Maximum
points = 5
J-0A- 02.
-A.2-e— r 3IC-
3 y;1`
LaR(iAa?bet q
geo
»)�y
-3-
9595 FRESHWATER RPA2014_3.xlsm, data
6/23/2014

NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
PERMIT WRITERS - AFTER you get this form back
Check that
f
from
all apply
Notify PERCS if LTMP/STMP data we said should be
Date of Request
6/18/2014
municipal renewal
x
on DMRs is not really there, so we can get it for you
Requestor
Ron Berrry
new industries
(or NOV POTW).
Facility Name
Contentnea MSD WWTP
WWTP expansion
- Notify PERCS if you want us to keep a specific POC
Permit Number
NC0032077
Speculative limits
in LTMP/STMP so you will have data for next permit
Region
Washington
stream reclass.
renewal.
- Email PERCS draft permit, fact sheet, RPA.
Basin
Neuse River
outfall relocation
- Send PERCS paper copy of permit (w/o NPDES
7Q10 change
boilerplate), cover letter, final fact sheet. Email RPA if
other
changes.
other
check
applicable PERCS
staff:
Other Comments to PERCS:
BRD, CPF, CTB, FRB,
TAR - Sarah Morrison (6310)
X
CHO, HIW, LTN, LUM,
NES, NEW, ROA, YAD
- Monit Hassan (6314)
PERCS
Status
PRETREATMENT
of Pretreatment
STAFF COMPLETES THIS PART:
Program (check all that apply)
1) facility has no SIU's,
does have Division approved Pretreatment Program that is INACTIVE
2) facility has no SIU's,
does not have Division approved Pretreatment Program
3) facility has SIUs
and DWQ approved Pretreatment Program (list "DEV" if program still under development)
\%
3a) Full Program
with LTMP
3b) Modified Program
with STMP
4) additional conditions
regarding Pretreatment attached or listed below
Flow, MGD
Permitted
Actual
Time period for Actual
STMP time frame:
Industrial
0. OS 1
0, Q ,i 0
10 1
Most recent:
Uncontrollable
n/a
Next Cycle:
POC in LTMPI
STMP
Parameter of
Concern (POC)
Check List
POC due to
NPDES/ Non-
Disch Permit
Limit
Required by
EPA'
Required
by 503
Sludge**
POC due
to SIU""
POTW POC
(Explain
below)*"**
STMP
Effluent
Freq
LTMP
Effluent
Freq
BOD
V�
V
4
Q M
TSS
V
✓
4
Q M
Q = Quarterly
NH3
V
V
4
Q M
M = Monthly
Arsenic
V
4
Q M
V
Cadmium
V
✓
✓
4
Q M
'
Chromium
J
V
4
Q M
'
Copper
'✓
4
✓
1.7
4
Q M
Cyanide
b-
✓/
4
Q M
Is all data on DMRs?
-\l
Lead
V
✓
V
4
Q M
YES
V
Mercury
V
✓
4
Q M
NO (attach data)
Molybdenum
4
Q M
�!
Nickel
d
t,/
V
4
Q M
Silver
OC
4
Q M
Selenium
V ,
4
Q M
til
Zinc
V
J
✓
V
4
Q M
/s data in spreadsheet?
Total Nitrogen
V
✓
4
Q M
YES (email to writer)
Phosphorus
V
V
4
Q M
NO
V
4
Q M
4
Q M
4
Q M
4
Q M
*Always in the LTMP/STMP ** Only in LTMP/STMP if sludge land app or compos e (dif POCs for incinerators)
"` Only in LTMP/STMP while SIU still discharges to POTW "*** Only in LTMP/STMP when pollutant is still of concern to POTW
Comments to Permit Writer (ex., explanation of any POCs; info you have on IU related investigations into NRDES pro lems):
CMeib 0.5 4
Sj LA (q_ivs iv\ l C.,itt. i)0Q.„ S*1`1 l- Y\P Ch
f"
f1 s, �t..f
c'L 6Jl L 11 i E b , a t.A
PERC NPDES_Pretrealment request form ju1y2007.xlsx
Revised: July 24, 2007

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/1 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/1 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/1, then add Annual Avg TBEL of 47 ng/l.
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/I annual average limit unless WQBEL < 47 ng/1,
in which case annual avg limit should be set at WQBEL.
• Conclusion: the Annual Avg limit will range from 12 ng/1 to upper cap of 47 ng/l.
Step 4- If NEW limit, delay effective date
• Addition of new limit will become effective in 5th 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

5/23/14
WQS = 12 ng/L
Facility Name: Contentnea MSD WWTP NC0032077
rotal Mercury 1631E PQL = 0.5 ng/L
Date Modifier Data Entry
MERCURY WQBEL/TBEL EVALUATION
No Limit Required
MMP Required
7Q10s = 36.000 cfs
Value Permitted Flow = 3.500
WQBEL =
V:2013-5
91.63 ng/L
47 ng/L
3/24/10 6.8 6.8
6/10/10 8.7 8.7
9/16/10 5.8 5.8
12/15/10 < 1 0.5
3/15/11 < 1 0.5
5/19/11 < 1 0.5
6/8/11 1.1 1.1
9/19/11 1.1 1.1
10/13/11 < 1 0.5
11/15/11 < 1 0.5
1/5/12 < 1 0.5
5/3/12 < 1 0.5
8/9/12 < 1 0.5
10/25/12 < 1 0.5
3/13/13 < 1 0.5
4/18/13 < 1 0.5
8/1/13 < 1 0.5
12/3/13 < 1 0.5
3/5/14 < 1 0.5
5.5 ng/L - Annual Average for 2010
0.7 ng/L - Annual Average for 2011
.< 0.5 ng/L - Annual Average for 2012
< 0.5 ng/L - Annual Average for 2013
< 0.5 ng/L - Annual Average for 2014
�- YweN' (.vv' `' f'/`�r�
�► i,', w mil, � , -�

Contentnea MSD WWTP NC0032077
Mercury Data Statistics (Method 1631 E)
2010
2011
2012
2013
2014
# of Samples
4
6
4
4
1
Annual Average, ng/L
5.5
0.7
0.5
0.5
_
0.5
Maximum Value, ng/L
8.70
1.10
0.50
_
0.50
0.50
TBEL, ng/L
47
WQBEL, ng/L
91.6

• Berry, Ron
From:
Sent:
To:
Subject:
Chuck Smithwick <[e-mail]>
Thursday, August 07, 2014 10:33 AM
Berry, Ron
Re: Follow up to questions on equipment arrangement CMSD WWTP
Mr. Berry:
As per request, response to the following questions:
1) We do have an effluent flow meter. It is located at the weir on the post aeration basin.
2) It is gravity flow from the post aeration basin to the outfall. The only "lift" pumps that are in our new flowtrain are
the "filter lift pumps". The wastewater comes off of the clarifiers, is lifted to the filters and is gravity from there to
the discharge point into the Contentnea Creek.
3) Alum is introduced as the wastewater passes over the weir of the "post -aeration stage" of the BNR.
4) We identify our sludge holding tanks as follows:
Digester # Description
1 & 2 rectangular tanks constructed in 1991
3 & 4 modified 1st stage clarifiers from old WWTP
5 existing digester from original construction (1976)
6 & 7 modified 2nd stage aeration basins from old WWTP
8 & 9 modified 2nd stage clarifiers from old WWTP
Capacity,
350,000 each (700,000)
160,000 each (320,000)
375,000 (375,000)
375,000 each (750,000)
160,000 each (320,000)
Total sludge holding capacity 2,465,000
5) We have two (2) 300 gpm pumps whose only purpose is for land application of biosolids to our land application sites.
In that same building (Intermediate Pump Station) where the land application pumps are located, the old scum
pumps from the 1st Stage clarifers have been replaced with transfer pumps that allow us to transfer sludge from
digesters 5, 6 and 7 to digesters 1 and 2. The "loadout" pump is housed in a newly constructed pump station on
the NW corner of digester 1. The only purpose of this pump is to load sludge into tanker trucks for hauling to
remote land application sites and "terragators" for land application on CMSD owned/leased application
sites.
Please advise if additional information is required.
Thanks,
Chuck
From: "Ron Berry" <ron.berrvancdenr.gov>
To: "Chuck Smithwick" <crosd100e.embargmail.com>
Sent: Thursday, August 7, 2014 9:23:39 AM
Subject: Follow up to questions on equipment arrangement CMSD WWTP
Mr. Smithwick,
I am reviewing my notes from our last conversation and regret my notes do not address all the questions I had. Please
provide the following information:
1) Is there an effluent meter? If yes, where is it located? Does it have totalization ability?
1

4
2) Is a pump required to transfer the treated wastewater from the post aeration basin to the outfall or is it gravity
• flow?
3) I had indicated in my notes alum was added to the post -anoxic tanks, is this correct?
4) The original plant aerobic sludge stabilization /holding tanks consisted of 9 tanks, what is the capacity of the
tanks?
5) You had indicated there were two 300 gpm sludge land application pumps to apply digested sludge to land
application sites, is the same as the sludge loadout pumps to load trucks, etc. or is this for a direct transfer of
sludge directly to field application?
Thank you for your assistance.
Ron Berry, Engineer
Division of Water Resources/NCDENR
Phone: (919) 807 - 6396
Email: ron.berrvPncdenr.eov
Location Address - Archdale Building, Office 925Y
512 N. Salibury St.
Raleigh, NC 27699
Mailing Address - Archdale Building, NCDENR/DWR
1617 Mail Service Center
Raleigh, NC 27669-1617
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties.
2

Berry, Ron
From: Chuck Smithwick [[e-mail]]
Sent: Tuesday, June 24, 2014 11:54 AM
To: Berry, Ron
Subject: CMSD Requested Info.
Ron:
Information about pumps in "Intermediate Pump Station" as per request:
Sludge Transfer Pumps
Qty: 2
Capacity: 500 gpm
Hp: 10 Hp
Use: Transfer sludge from digesters (3, 4, 5, 6, 7, 8 and 9 used for stabilization) to digesters (1 and 2) for
disposal.
Installed with the latest construction (2014)
Sludge Land Application Pumps
Qty: 2
Capacity 300 gpm
Hp: 60 Hp w/25 Hp chopper pump
Use: To apply digested sludge to land application sites.
Installation date: 1991
Intermediate Pump Station Pumps
Qty: 2
Capacity: 2800 gpm
Hp: 20 Hp
Use: Transfer supernate from digesters 3, 4, 5, 6, 7, 8 and 9 to headworks or equalization basins.
Installation date: 1976 (original construction)
Please advise if you need additional information.
Chuck Smithwick
District Manager, CMSD
1

Ask
ANN
asti
&acztnea Maio/ao%itaw deureuc� Je (Ohtuct
CMSD
POST OFFICE BOX 477
GRIFTON, NORTH CAROLINA 28530
aft' CHARLES M. SMITHWICK, JR.
DISTRICT MANAGER
ANN
011114
41010►
ANN
emit
sag.a,
November 28, 2012
Mr. Tom Belnick, Supervisor
Division of Water Quality
Surface Water Protection Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Request for Permit Renewal
NPDES Permit No. NC0032077
Contentnea Metropolitan Sewerage District (CMSD)
Grifton, NC
Dear Mr. Belnick:
Enclosed, please find one (1) original and two (2) copies of an application package requesting
renewal of the NPDES Permit for the Contentnea Metropolitan Sewerage District (CMSD)
Wastewater Treatment Plant located in Grifton, North Carolina. Each application package contains
the following:
1. EPA NPDES Form 2A
oft, 2. Topographic Site Map
_ 3. Schematic Flow Diagram
4. Three (3) Priority Pollutant Analyses
5. Four (4) Chronic Toxicity Tests
oft 6. Sludge Management Plan
If you have any questions or require any additional information, please do not hesitate to contact me
at 252-524-5584.
Sincerely,
alto`__
Charles M. Smithwick, Jr.
District Manager
—, Enclosures
onitN c: Charlie Davis, The Wooten Company
Rank
016,

wookk
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AMIN
FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment
® Yes ❑ No
F.2. Number of Significant Industrial Users
industrial users that discharge to the treatment
a. Number of non -categorical SIUs.
b. Number of CIUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each
provide the information requested for each
from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
works have, or is subject ot, an approved pretreatment program?
(SlUs) and Categorical Industrial Users (ClUs). Provide the number
works.
3
of each of the following types of
1
SIU. If more than one SIU discharges
SIU.
to the treatment works, copy questions F.3 through F.8 and
F.3. Significant
as necessary.
Name:
Mailing Address:
F.4. Industrial Processes.
Catfish Processing
Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
Carolina Classics Catfish
PO Box 10
Ayden, North Carolina 28513
Describe all the industrial processes that affect or contribute to the SIU's discharge.
F.5. Principal Product(s)
discharge.
Principal product(s):
Raw material(s):
F.6. Flow Rate.
a. Process
day (gpd)
b. Non -process
in gallons
F.7. Pretreatment
a. Local limits
b. Categorical
If subject to categorical
N/A
and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
Fresh and Frozen Catfish
Live Catfish
collection system in gallons per
into the collection system
non -process wastewater flow.
(Carolina Classics Catfish's Permitted Flow is 34,000 gpd)
wastewater flow rate. Indicate the average daily volume
and whether the discharge is continuous or intermittent.
10.667 " gpd ( X continuous
volume
It is
of process wastewater discharge into the
or intermittent)
wastewater flow rate. Indicate the average daily
per day (gpd) and whether the discharge is continuous
gpd ( continuous
of non -process wastewater flow discharged
or intermittent.
or intermittent)
" This flow is combined process and non -process.
not possible to separate process from
Standards. Indicate whether the SIU is subject to the following:
® Yes ❑ No
pretreatment standards 0 Yes EI No
pretreatment standards, which category and subcategory?
...� EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 18 of 22

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er
FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck 0 Rail 0 Dedicated Pipe
F,11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
N/A N/A N/A
N/A N/A N/A
N/A N/A N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
N/A
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
N/A
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
N/A
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
Am. EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 19 of 22

AMI
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4110.
ANON
FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
SUPPLEMENTAL APPLICATION INFORMATION
PART F. INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL. INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
c. Number of non -categorical SIUs. 3
d. Number of ClUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: East Carolina Stockyard
Mailing Address: P.O. Box 351
Arden, North Carolina 28513
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Buy and Sell Livestock
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Livestock Waste
Raw material(s): N/A
F.6. Flow Rate.
(East Carolina Stockyard's Permitted Flow is 8,000 gpd)
c. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
2,917 .' gpd ( X continuous or intermittent)
d. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
Minimal gpd ( X continuous or intermittent)
" This flow is combined process and non -process. It is not possible to separate process from non -process wastewater flow.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes 0 No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
.a.. EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Ark
Page 20 of 22

FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes E No If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
0 Yes E No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
0 Truck ❑ Rail 0 Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
N/A N/A N/A
N/A N/A N/A
N/A N/A N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
0 Yes (complete F.13 through F.15.) E No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
N/A
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
N/A
F.15. Waste Treatment.
c. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
N/A
d. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 21 of 22

A^
AMIN
All ft,
4•1111 is„
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001,
FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (ClUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
e. Number of non -categorical SIUs. 3
f. Number of ClUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Weyerhaeuser
Mailing Address: P.O. Box 280
Avden. NC 28513
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Produce Lumber Products from Southern Yellow Pine
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): 2x4, 2x6, 2x10. 2x12 Lumber Products
Raw material(s): Southern Yellow Pine
F.6. Flow Rate.
(Weyerhauser's Permitted Flow is 10,000 gpd)
e. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
7.834 .' gpd ( X continuous or intermittent)
f. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
" This flow is combined process and non -process. It is riot possible to separate process from non -process wastewater flow.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes 0 No
b. Categorical pretreatment standards 0 Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
amilbk
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 22 of 22

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' FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused o contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck 0 Rail 0 Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
N/A N/A N/A
N/A N/A N/A
N/A NIA N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates
the next five years).
N/A
remedial activities?
(or is excepted to origniate in
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
N/A
F.15. Waste Treatment.
e. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
N/A
f. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 23 of 22

FACILITY NAME AND PERMIT NUMBER:
CMSD WWTP, NC0032077
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Neuse
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA,
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number
industrial users that discharge to the treatment works.
g. Number of non -categorical Sills. 3
or other remedial wastes must
of each of the following types of
questions F.3 through F.8 and
h. Number of ClUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Winterville Machine Works
Mailing Address: P.O. Box 520
Winterville. NC 28590
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Plating and Manufacturing of Machine Parts
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Machine Parts plated with Nickel and Zinc
Raw material(s): Nickel and Zinc
collection system in gallons per
into the collection system
F.6. Flow Rate. (Winterville Machine Works' Permitted Flow is 5,000 gpd)
g. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the
day (gpd) and whether the discharge is continuous or intermittent.
3.667 gpd ( continuous or X intermittent)
h. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes 0 No
If subject to categorical pretreatment standards, which category and subcategory?
413.10 (Electroplating of Common Metals)
NPDES FORM 2A Additional Information

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CONTENTNEA METROPOLITAN
SEWERAGE DISTRICT
WWTP
2000' 1000' 0
2000'
SCALE: 1 "=2000'
QUAD SHEET: GRIFTON. NC
Jolty
Cant

Sludge Management Plan
CMSD Wastewater Treatment Plant
NPDES Permit No. NC 0032077
Non -Discharge Permit No. WQ0001048
Sludge Production
Contentnea Metropolitan Sewerage District (CMSD) currently operates a 2.85 mgd modified
biological nutrient removal (BNR) plant which discharges its effluent into Contentnea Creek in
the Neuse River Basin under NPDES Permit No. NC0032077. Waste sludge from the modified
BNR plant is discharged to either one (1) 375,000 gallon capacity aerated tank or two (2)
347,500 gallon capacity each aerated tanks for long term sludge stabilization and storage.
Periodically, the sludge is allowed to settle in the basin and the supernatant is withdrawn and
recycled back to the plant headworks for reprocessing.
When the plant expands to 3.5 mgd capacity and following the addition of the new 5-stage
biological nutrient removal (BNR) activated sludge process, the two existing first stage clarifiers,
two existing second stage aeration basins, and two existing second stage clarifiers shall be
converted to sludge stabilization and holding tanks. Diffused aeration shall be utilized in each
clarifier and a combination of floating aerators and mixers shall be utilized in the second stage
aeration basins. Therefore waste sludge from the new BNR plant shall be discharged to either of
the existing digesters described above or to the existing treatment basins converted to sludge
stabilization/holding described herein. The additional sludge stabilization and holding capacity
created by modifying the existing basins is 1,586,000 gallons.
Additionally, a biosolids dewatering facility shall be constructed with the plant expansion project
to provide CMSD the option to dewater stabilized sludge prior to disposal. The facility shall
include dual rotary lobe sludge feed pumps, dual sludge dewatering screw presses, dual polymer
feed systems, dewatered sludge conveyers, and all associated appurtenances.
Sludge Stabilization
Class B pathogen reduction requirements are met using either Alternative 1 [Monitoring of Fecal
Coliform, 503.32(b)(2)] or Alternative 2 [Use of Process to Significantly Reduce Pathogens,
503.32(b)(3)]. PSRPs utilized for Alternative 2 include Aerobic Digestion and Lime
Stabilization.
Class B vector attraction reduction requirements are met using one of the following options:
Option 3 [Aerobic Digestion, 503.33(b)(3)], Option 4 [SOUR, 503.33(b)(4)], Option 6 [Alkaline
Stabilization, 503.33(b)(6)], Option 9 [Injection, 503.33(b)(9), or Option 10 [Incorporation,
503.33(b)(10)].

0
Sludge Disposal
The aerobically stabilized liquefied sludge is land applied at agronomic rates under Non -
Discharge Permit No. WQ0001048. CMSD owns and operates four (4) land application sites
(Sites A-D) totaling 60.37 application acres adjacent to the WWTP. Additionally, CMSD
occasionally contracts with McGill Environmental Services and/or Granville Farms for sludge
disposal.
A new 500 gpm sludge loading pump will be provided through the plant expansion to 3.5 mgd.
This pump will aide CMSD in loading haulers in the event contract sludge disposal services are
required. In the event that this pump is out of service and CMSD is actively disposing of sludge
through either McGill Environmental or Granville Farms, CMSD will require that a portable
pump be provided by the contractor to pump sludge from either digester basin to the hauler on a
temporary basis as is currently done. Once the sludge loading pump is available for service, it
will be placed back into service and the temporary portable pump(s) removed from service.
As described above, CMSD will also have the ability to dewater sludge prior to disposal utilizing
screw presses. Dewatered sludge shall be disposed of through either McGill Environmental or
Granville Farms.

•
INFLUENT
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Anoxic Tanks Anoxic Tanks
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NOTE:
WILL
.....
THE EXISTING FIRST STAGE AERATION TANKS BE
CONVERTED FOR USE AS FLOW EQUALIZATION FACILITIES.
NOTE:
THE EXISTING SECOND STAGE AERATION TANKS. FIRST
STAGE CLARIFIERS AND SECOND STAGE CLARIFIERS WILL BE
CONVERTED FOR USE AS PART OF AEROBIC SLUDGE
STABILIZATION AND STORAGE FACILITIES.
LEGEND
NEW STRUCTURE
EXISTING STRUCTURE
MODIFIED STRUCTURE
MODIFIED STRUCTURE
r. NEW PROCESS PIPE
EXISTING PROCESS PIPE
EXISTING PIPE
< RETURN SLUDGE PIPE
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AVERAGE DAILY FLOW
--- Caustic
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—a
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SLUDGE
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Sludge Recirculation
• (3.5 MGD)PAD
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AERATION BASIN No 2
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PRESS
BUILDING
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0
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— Chlorine
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SCHEMATIC FLOW DIAGRAM
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nd STAGE
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2nd STAGE
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EFFLUENT
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SLUDGE
RECIRCULATION
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SLUDGE
DRYING
BEDS
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THE WOOTEN COMPANY
ENGINEERING PLANNING ARCHITECTURE
120 North Boylan Avenue Raleigh NC 27603-1423
919.828.0531 fax [phone]

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—
NOTE:,'
THE EXISTING FIRST STAGE AERATION TANKS WILL BE
CONVERTED FOR USE AS FLOW EQUALIZATION FACILITIES.
NOTE: .
THE EXISTING SECOND STAGE AERATION TANKS, FIRST
STAGECLARIFIERS AND SECOND STAGE CLARIFIERS WILL BE
CONVERTED FOR USE AS PART OF AEROBIC SLUDGE
STABILIZATION AND STORAGE FACIUTIES.
(3.5 MGD)
LEGEND -1-Wu (2�
NEW STRUCTURE
EXISTING STRUCTURE
MODIFIED STRUCTURE
MODIFIED STRUCTURE
NEW PROCESS PIPE
EXISTING PROCESS PIPE
EXISTING PIPE
RETURN SLUDGE PIPE
WASTE SLUDGE PIPE
DECANT / DRAIN UNE
IRRIGATION LINE
FLOW BALANCE AT DESIGN `
AVERAGE DAILY FLOW
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DISTRIBUTION (3.51aAGD)
BOX
Oxic Tanks
Anoxic Tanks Anoxic Tanks
(3.5 MGD)
--- Caustic
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(1.757.IGD)
(1.75MGD)
(3.5 MGD)
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r
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--AEROBIC SLUDGE
STABILIZATION /
/ HOLDING TANKS
-- Sludge Recirculation
• (3.5 MGD)
CHEM
TAN
AERATION BASIN No 1
AERATION BASIN No 2
E•]
BLOWER
PAD
CHEM.
FEED
BUILDING
owwarR
�r
FIRST
STAGE
SLUDGE
RECIRC.
PUMP
STATION
UTILITY
BUILDING
1st STAG
CLARIFIER
NO.1
1st STAGE
CLARIFIER
NO. 2
m REc1GEPLOW
(7.0 MGD)
-- Decant Return
PUMPING
STATION
• WASTE SLUDGE
DRAIN
PUMP
STATION
�.x
BELT FILTER
PRESS
BUILDING
—.— WASTE SLUDGE
DEWATERED
SLUDGE
HAULING
•
NEW
CLARIFIER
No 1
METHANOL
STORAGE &
FEED FACILITY
FLOW
SPILTTER BOX
LD
Ni
SLUDGE
RECIRCULATION! 0
WASTE PUMP
STATION N
NEW
CLARIFIER
No 2
(3.5 MGD)
DENITRIFICATION
FILTER SYSTEM ULTRAVIOLET
— ludgge
ecl culation
— Chlorine
AEROBIC DIGESTER
SECOND STAGE
AERATION BASIN No 1
SECOND STAGE
AERATION BASIN No 2
—f
DISINFECTION
FILTER
LIFT STATION
(3.5 MGD)
\To Sprayfield-•--d
SCHEMATIC FLOW DIAGRAM
CMSD WASTEWATER TREATMENT PLANT
— Drain
IRRIGATION
PUMP STATION
2nd STAGE
CLARIFIER
NO. 2
I
0
Ii ' POST
AERATION TANK
(
2020 LF 36" DIA
EFFLUENT
OUTFALL
(3.5
MGD)
STORMWATER111
CHANNEL
SECOND STAGE
SLUDGE
RECIRCULATION
PUMP STATION
SLUDGE
DRYING
BEDS
TI!
THE WOOTEN COMPANY
ENGINEERING PLANNING ARCHITECTURE
120 North Boylan Avenue Raleigh NC 27603-1423
919.828.0531 fax [phone]
Oxic Tanks