NC0070289_Draft Permit_20190918

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LINDA CULPEPPER
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Environmental Quality
September 18,2019
Mr.Wayne Huntley
Stones Throw Homeowners Association
PO Box 690725
Charlotte,NC 28227
Subject: Draft NPDES Permit NC0070289
Ridgewood Farms at Stones Throw WWTP
Grade II Biological WPCS
Cabarrus County
Dear Mr.Huntley:
The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure a
thorough understanding of the information,conditions,and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
➢ Section A. (3)and Footnote#1 in Section A. (1.)has been updated regarding electronic submission of
effluent data.Federal regulations require electronic submittal of all discharge monitoring reports(DMRs).
> Regulatory citations have been added to the permit.
Please note that Caldwell Creek is listed as an impaired waterbody on the North Carolina 303(d)Impaired Waters
List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be
evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to
your facility,then mitigative measures may be required.
With this notification,the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Cabarrus 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
the telephone number listed at the bottom of this page,or via e-mail [[e-mail]].
Sincerely,
Sydney Carpenter
NPDES Compliance and Expedited Permitting
lb—M
North Carolina Department of Environmental Quality I Division of Water Resources
1617 Mail Service Center I Raleigh,North Carolina 27699-1617
919-707-3712

cc: NPDES File
Winston-Salem Regional Office

Permit NC0070289
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Stones Throw Home Owners Association
is hereby authorized to discharge wastewater from a facility located at the
Ridgewood Farms at Stones Throw WWTP
Old Creek Trail (end of cul-de-sac)
Concord
Cabarrus County
to receiving waters designated as Caldwell Creek in the Yadkin-Pee Dee 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 November 30, 2023.
Signed this day
DRAFT
Linda Culpepper, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NC0070289
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.
Stones Throw Home Owners Association
is hereby authorized to:
1. Continue to operate the existing 0.050 MGD wastewater treatment facility that includes the
following components:
• Duplex influent pump station
• Bar screen
• Aerobic sludge holding/thickening tank
• Extended aeration
• Clarifier
• Tablet chlorination w/contact basin
• Tablet dechlorination w/contact basin
• Post aeration
This facility is located at Ridgewood Farms at Stones Throw [Olde Creek Trail (end of cul-de-
sac), Concord] in Cabarrus County.
2. Discharge from said treatment works at the location specified on the attached map into Caldwell
Creek, currently classified C waters [Stream Index: 13-17-8-5] in sub-basin 03-07-11 [HUC:
0304010503] of the Yadkin-Pee Dee River Basin.
Page 2 of 7

Permit NC0070289
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.05 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of this permit and lasting until expansion above 0.05
MGD or expiration, the Permittee is authorized to discharge treated wastewater from outfall 001. Such
discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENTCHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Type Sample
[eDMR Code] Average Maximum Frequency Location2
Flow [50050] 0.050 MGD Continuous Recording Influent or
Effluent
BOD,5-day—Summer* [C0310] 18.0 mg/L 27.0 mg/L Weekly Composite Effluent
BOD,5-day— Winter* [C0310] 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
Total Suspended Solids [C0530] 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
NH3 as N—Summer* [C0610] 5.0 mg/L 25.0 mg/L Weekly Composite Effluent
NH3 as N—Winter* [C0610] 12.0 mg/L 35.0 mg/L Weekly Composite Effluent
Dissolved Oxygen [00300] Daily Average>5.0 mg/L Weekly Grab Effluent
Fecal Coliform(geometric mean) [31616] 200/100 ml 400/100 ml Weekly Grab Effluent
Total Residual Chlorine3 [50060] 28 pg/L 2NVeek Grab Effluent
Temperature(°C) [00010] Daily Grab Effluent
pH [00400] Not<6.0 nor>9.0 Weekly Grab Effluent
Standard Units
Total Phosphorus [C0665] Quarterly Composite Effluent
Total Nitrogen(NO2+NO3+TKN) [C0600] Quarterly Composite Effluent
Dissolved Oxygen [00300] Weekly Grab Upstream&
Downstream
Temperature(°C) [00010] Weekly Grab Upstream&
Downstream
*Summer: April 1 —October 31
Winter: November 1 —March 31
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system
[see A. (3)].
2. Upstream: at least 100 feet from outfall; Downstream: at NCSR 1141.
3. The Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with the permit.
However,the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
(including field certified), even if these values fall below 50 µg/l.
All samples collected should be from a representative discharge event.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
Page 3 of 7

Permit NC0070289
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.09 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning upon expansion above 0.050 MGD and lasting until expiration, the permittee
is authorized to discharge treated wastewater from outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Sample
[eDMR Code] Average Maximum Frequency Type Location2
Flow [50050] 0.090 MGD Continuous Recording Influent or Effluent
BOD,5-day—Summer* [C0310] 18.0 mg/L 27.0 mg/L Weekly Composite Effluent
BOD,5-day—Winter* [C0310] 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
Total Suspended Solids [C0530] 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
NH3 as N—Summer* [C0610] 5.0 mg/L 25.0 mg/L Weekly Composite Effluent
NH3 as N—Winter* [C0610] 12.0 mg/L 35.0 mg/L Weekly Composite Effluent
Dissolved Oxygen [00300] DailyAverage>5.0 mg/L WeeklyGrab Effluent
Y9 9 9
Fecal Coliform(geometric mean) [31616] 200/100 ml 400/100 ml Weekly Grab Effluent
Total Residual Chlorine3 [50060] 28 pg/L 2/Week Grab Effluent
Temperature(°C) [00010] Daily Grab Effluent
pH [00400] Not<6.0 nor>9.0 Weekly Grab Effluent
Standard Units
Total Phosphorus [C0665] Quarterly Composite Effluent
Total Nitrogen(NO2+NO3+TKN) [C0600] Quarterly Composite Effluent
Dissolved Oxygen [00300] Weekly Grab Upstream&
Downstream
Temperature(°C) [00010] Weekly Grab Upstream&
Downstream
*Summer: April 1 —October 31
*Winter.: November 1 —March 31
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system
[see A. (3)].
2. Upstream: at least 100 feet from outfall; Downstream: at NCSR 1141.
3. The Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory(including field certified), even if these values fall below 50 µg/l.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS
A. (3.) ELECTRONIC REPORTING OF DISCHARGE 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.
Page 4 of 7

Permit NC0070289
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 [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 previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation
(CROMERR),permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the following
address:
NC 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.
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).
Page 5 of 7

Permit NC0070289
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9),the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the
initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program)that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each
type of electronic submission and for each state. Instructions on how to access and use the appropriate
electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting
Rule is found at: http://www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-
system-npdes-electronic-reporting-rule.
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
3. How to Request a Waiver from Electronic 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:
https://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements ISupplements Section B. (11.) (b) and Supersedes Section B. (11.)
1101
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section
B. (11.)(b). A person, and not a position,must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions,the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system,registering for eDMR and obtaining an eDMR user account, please visit the following
web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
Page 6 of 7

Permit NC0070289
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or persons
who manage the system, or those persons directly responsible for gathering the information, the
information 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.)l
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.41].
Page 7 of 7

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Ridgewood Farms at Stones Throw WWTP N -
NPDES Permit NC0070289
Receiving Stream: Caldwell Creek Longitude: 80° 35' 7" W Facility -- —
Stream Index: 13-17-8-5 Latitude: 35° 17' 16" N Location
River Basin:Yadkin Pee-Dee Sub-Basin: 03-07-11 SCALE
Stream Class:C HUC: 0304010503 t:io,000 Cabarrus County