NC0040266_Draft Permit_20171213

Water Resources
ENVIRONMENTAL QUALITY
ROY COOPER
Goeernoi
MICHAEL S REGAN
Secretary
LINDA CULPEPPER
Interim Director
December 13, 2017
Betty Murphrey
Krughtdale Estates MHP LP
808 Eagle Rock Rd
Wendell, N C. 27591
Subject Draft NPDES Permit NCO040266
Krughtdale Estates MHP/ Class WW -2
Wake County
Dear Ms Murphrey
The Division has reviewed your request to renew the subject permit Please review this draft carefully to ensure
your thorough understanding of the information, conditions, and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
➢ Section A (6 ) has been updated to reflect current language regarding electronic submission of
effluent data
➢ Components list has been amended to include one digester.
➢ Regulatory citations have been added to the permit.
➢ Updated outfall map included
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Wake County area, per EPA requirements Please provide your
comments, if any, to me no later than 30 days after receiving this draft permit.
Following the 30 -day public comment period, the Division will review all pertinent comments and take
appropriate action prior to issuing a final permit If you have questions concerning the draft, please contact me at
919-807-6393, or via e-mail [Anjah.Orlando®ncdenr gov]
Sincerely,
Anjali Orlando
Compliance & Expedited Permittmg Unit
cc NPDES Files
Raleigh Regional Office
State of North Carolina I Environmental Quality I Water Resources
1617 Mani Service Center I Raleigh, NC 27699-1617
919 807 6300 919-807-6389 FAX
https•//deq nc gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Permit NCO040266
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision 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,
Knightdale Estates MHP Limited Partnership
is hereby authorized to discharge wastewater from a facility located at the
Knightdale Estates MHP WWTP
Hodge Road (NCSR 2516)
Knightdale
Wake County
to receiving waters designated as an unnamed tributary to the Neuse River in subbasin 03-04-02 of the
Neuse River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective
This permit and authorization to discharge shall expire at midnight on February 28, 2023.
Signed this day
DRAFT
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NCO040266
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
Knightdale Estates MHP Limited Partnership
is hereby authorized to:
1. Continue to operate an existing 0.025 MGD wastewater treatment facility that includes the
following components:
■ Influent pump station
■ Manual bar screen
■ Aeration basin
■ Secondary clarifier
■ Aerobic digester [2500 gallons]
■ Dual sludge storage tanks [1200 gallons each]
■ Tablet chlorine disinfection
■ Chlorine contact chamber with air diffuser
■ Tablet dechlorination
■ Post aeration
■ Effluent flow meter [ISCO 3230]
■ Digester
This facility is located at the Knightdale Estates MHP WWTP off Hodge Road near Knightdale in
Wake County.
2. Discharge from said treatment works via outfall 001 into an unnamed tributary to the Neuse River,
currently classified C -NSW waters in sub -basin 03-0-402, hydrologic unit 030202010705 of the
Neuse River Basin, at the location specified on the attached map.
Page 2 of 8

Permit NCO040266
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq.,15A NCAC 02B.0500 et seq.]
(a.) Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge treated wastewater from outfall 001 Such discharges shall be limited, monitored, and
reported' by the Permittee as specified below:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly Daily
Measurement
Sample
Sample
[PCS CODE]
Average Maximum
Frequency
Type
Location2
Flow [50050]
0.025 MGD
Continuous
Recording
Effluent
Total Monthly Flow (MG)
Monitor and Report
Monthly
Recorded or
Calculated
Effluent
BOD, 5 -day, 20°C [00310]
27.0 mg/L
40.5 mg/L
Weekly
Grab
Effluent
(April 1- October 31)
BOD, 5 -day, 20°C [00310]
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
(November 1— March 31)
Total Suspended Solids
[00530]
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
NH3 as N [00610]
4.8 mg/L
24.0 mg/L
Weekly
Grab
Effluent
(April 1- October 31)
NH3 as N [00610]
21.7 mg/L
35.0 mg/L
Weekly
Grab
Effluent
(November 1 - March 31)
Total Residual Chlorine
28 pg/L
2/Week
Grab
Effluent
[50060]
Fecal Coliform
[31616]
200/100 mL
400/100 mL
Weekly
Grab
Effluent
(geometric mean)
pH [00400]
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Dissolved Oxygen [00300]
Daily average > 5.0 mg/L
Weekly
Grab
Effluent
Dissolved Oxygen [00300]
Weekly
Grab
U & D
Temperature (°C) [00010]
Daily
Grab
Effluent
Temperature (°C) [00010]
Weekly
Grab
U & D
TKN (mg/L) 5 [00625]
Monitor and Report
Monthly
Grab
Effluent
NO3-N + NO2-N (mg/L)5
Monitor and Report
Monthly
Grab
Effluent
[00630]
Total Nitrogen (mg/L)5
Monitor and Report
Monthly
Grab
Effluent
[00600]
Total Nitrogen Load
Monitor and Report (pounds/month)
Monthly
Calculated
Effluent
[QM600 monthly]
[QY600 annual]
Report (pounds/year)
Annually
Calculated
Effluent
Total Phosphorus [00665]
Monthly
Grab
Effluent
Page 3 of 8

Permit NCO040266
Notes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWWs eDMR
application system. See A. (2.).
2. U: at least 50 feet upstream from the outfall. D: at least 200 feet downstream from the outfall.
3. If solids management at the facility is deemed inadequate, this permit may be reopened to increase
TSS monitoring to 3/Week (see A. 4).
4. The facility shall report all effluent TRC values reported by a NC certified laboratory (including
field certified laboratories). However effluent values < 50 gg/L will be treated as zero for
compliance purposes.
5. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is
Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. Total Nitrogen Load is the mass quantity of Total Nitrogen discharged in a given period of time
[see A. (2) Calculation of Total Nitrogen Loads].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 8

Permit NCO040266
A.(2.) CALCULATION OF TOTAL NITROGEN LOADS
[G.S.143-215.1(b)]
a. The Permittee shall calculate monthly and annual Total Nitrogen (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/Land pounds/ month) in the
Discharge Monitoring Report (DMR) for that month and shall report each year's annual results
(pounds/ year) in the December DMR for that year.
A. (3.) TOTAL NITROGEN ALLOCATIONS
[G.S.143-215.1(b)]
(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 supercede any TN limit(s)
estabhshed elsewhere in this permit or in the NPDES permit of a compliance association of which the
Permittee is a Co -Permittee Member.
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT
STATUS
Estuary
Discharge
(pounds/year)
(pounds/year)
Base
Assigned by Rule
12/7/1997;
253
506
Active
(T15A NCAC 02B
4/1/2003
.0234)
Footnote:
(1) Transport Factor =10%
A. (4.) SOLIDS MANAGEMENT REPORTS
The Permittee shall record solids depths in the clarifier(s) (using a sludge judge), sludge wasting
events, onsite sludge storage capacities, effluent TSS concentrations, and all sludge hauling records
(frequency and volume). This information must be documented for each ORC visitation at the
treatment facility. Solids data must be provided in a written report detailing how residuals are
appropriately managed.
Page 5 of 8

Permit NCO040266
• Reports must be submitted to NC DENR Raleigh Regional Office, Surface
Water Protection Section.
• Reports are due by June 30st and December 31St of each calendar year.
A. (5.) ELECTRONIC REPORTING OF MONITORING REPORTS
[NCGS 143-215.1 (b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on
December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E.(5.) (a)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the p--evious month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR),
permittees will be required to submit all discharge monitoring data to the state electronically using
eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one
signed original and a copy of the computer printed eDMR to the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
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. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Page 6 of 8

Permit NCO040266
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
Sewer Overflow/ Bypass Event Reports;
Pretreatment Program Annual Reports; and
Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41 (1) (9), the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the initial
recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each
type of electronic submission and for each state. Instructions on how to access and use the appropriate
electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting
Rule is found at: http•//www2 epa gov/comphance/fmal-national-pollutant-discharge-ehmmation-
system-npdes-electronic-reporting rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the
Division. Requests for temporary electronic reporting waivers must be submitted in writing to the
Division for written approval at least sixty (60) days prior to the date the facility would be required
under this permit to begin submitting monitoring data and reports. The duration of a temporary
waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data and reports
shall be submitted electronically to the Division unless the permittee re -applies for and is granted a
new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are
not transferrable. Only permittees with an approved reporting waiver request may submit monitoring
data and reports on paper to the Division for the period that the approved reporting waiver request is
effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http: / / deq.nc. gov/ about/ divisions/water-resources / edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)]
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.) (a) or by a duly authorized representative of that person as described in Part II, Section
Page 7 of 8

Permit NCO040266
B. (11.) (b). A person, and not a position, must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following
web page:
http://deq-.nc.gov/about/divi-sions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
"I cerhfij, under penalty of lazy, that this docu ment and all attachments were prepared under my direction or
supervision to accordance with a system designed to assure that qualified personnel properly gather and evaluate
the information submitted. Based on my rnqu:n,/ of the person or persons who manage the system, or those
persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting
false information, including the possibility of fines and imprisonment for knowing violations."
5. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.41].
(a.)
Page 8 of 8