WQ0000267_Final Permit_20120629

HCDENR
North Carolina Department of Environment and
Division of Water Quaiity
Beverly Eaves Perdue Charles Wakild, P.E.
Goverror Director
June 29, 2012
Toby Chappell — County Manager
County of Gates
200 Court St.
Gatesville, NC 27938
Dear Mr. Chappell:
Natural Resources
Dee f=reeman
Secretary
Subject: Permit No. WQ0000267
Gates County WWTF
Wastewater hTigation System
Gates County
In accordance with your permit major modification request received March 12, 2012, and
subsequent additional information received June 4, 2012, we are forwarding herewith Permit No.
WQ0000267 dated June 29, 2012, to the County of Gates for the continued operation and modification of
the subject wastewater treatment and irrigation facilities.
The subject permit is being :modified to approve Phase I expansion and improvement of the
wastewater treatment plant. The Division has also taken this opportunity to re-evaluate the disposal
capacity of the existing irrigation site based on operational history and therefore, appoints a new
temporary monthly average flow limit of 8,000 gallons per day (GPD) and a temporary maximum annual
application rate of 15.6 inches, subject to the conditions set forth in Article I -- Schedules of the permit
attached herewith. Please note that the Permittee may submit an updated site evaluation prepared by a
licensed soil scientist and request for a permit modification to increase the flow.
Please note that on August 5, 2009, Session Law 2009-406, entitled "An Act to Extend Certain
Government Approvals Affecting the Development of Real Property Within the State," was enacted by
the General Assembly and signed into law. The Act, known as the Permit Extension Act of 2009, extends
the expiration date of certain government approvals and permits. In addition, Session Law 2010-177
extended the Act by another year. Permit No. WQ0000267 falls within the scope of this Act and is
therefore being extended until April 30, 2016. A renewal application must still be submitted six months
in advance of the extended expiration date.
This permit shall be effective from the date of issuance until April 30, 2016, shall void Permit No.
WQ0000267 issued June 16, 2011, and shall be subject to the conditions and limitations as specified
therein.. Please pay particular attention to the monitoring requirements listed in Attachments A, B and C
for they may differ from the previous permit issuance. Failure to establish an adequate system for
collecting and maintaining the required operational information shall result in future compliance
problems.
AQUIFER PROTECTION SECTION
1636 Mail Service Center, Ralslgh, North Carolina 27699-1636
Location: 512 N. Salisbury 8t., Raleigh, North Carolina 27604
Phone: [phone] FAX, 919-807-6496
Intemet: Www.ncwatemuatity.org
An Equal Opportunity 1 Affinnauve Action Employer
One.
NorthCarolina

Mr. Toby Chappell
June 29, 2012
Page 2 of 2
For your convenience, customized electronic copies of your facility's NDMR, and NDAR-1
reporting forms are available for download at: http://portal.ncdenr.org/,,veb/wq/mss/lau/reporting.
Please note the following permit conditions are new since the last permit issuance:
Condition 1.3. — Plans and specifications for a flow measuring device shall be prepared by a
licensed North Carolina Professional Engineer and submitted to the Washington Regional
Office 30 days prior to installation. The flow measuring device shall be installed within 180
days of the date of this permit.
➢ Condition. 11.11. — Regarding setbacks for storage and treatment units.
➢ Please note that the Gates County Wastewater Treatment Facility will be rated for 8000 gpd
as shown in Attachment A until such improvements are made, as described in Condition 1.5.,
that support an increased average daily flow limit to 15,000 gallons per day (GPD), and
corresponding maximum annual application rate of 29.25 inches. The new plant will not be
rated for 50,000 GPD until additional disposaVirrigation sites are added or until the existing
spray irrigation site is reevaluated.
If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee
has the right to request an adjudicatory hearing upon written request within 30 days following receipt of
this permit. This request shall 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 at 6714 Mail
Service Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and
binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this permit, please contact Chonticha McDaniel at [phone] or
[e-mail].
Sincerely,
Charles Wakild, P.E.
cc: Gates County Health Department
Washington, Regional Office, Aquifer Protection Section
William G. Simmons, Jr., PE — Cavanaugh & Associates, P.A.
Technical Assistance and Certification Unit
Permit File WQ0000267
Notebook File WQ0000267

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMNIISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER IRRIGATION SYSTEM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
County of Gates
Crates County
FOR THE
continued operation of a8,000 gallon per day (GPD) spray irrigation treatment and disposal facility
consisting of an influent bar screen, a 45 gallon per minute (GPM) pump station with duplex pumps, high
water alarms, and approximately 4,300 linear feet of 3 -inch force main, a 1.5 million gallon treatment and
storage lagoon, hypochlorination, a 9,290 gallon chlorine contact tank with turbine pumps, a 20
horsepower (HP) irrigation pump, a 7.0 acre spray irrigation field, and
Phase I - improvement construction and operation of a 50,000 gallon per day (GPD) wastewater treatment
plant consisting of a manual bar screen, a 15,000 -gallon flow equalization tank, a 45,000 -gallon aeration
basin, a 15,000 -gallon anoxic basin, a 8,340 gallon clarifier , a tertiary filter system, a 2,000 -gallon
chlorination tank, dual tablet dechlorinators, a 15,000 -gallon aerobic digester, pumps, blowers, mixers,
and an effluent flow meter.
to serve Gates County WWTF, with no discharge of wastes to surface waters, pursuant to the application
received March 12, 2012, and subsequent additional information received by the Division of Water
Quality, and in conformity with the project plans, specifications, and other supporting data subsequently
filed and approved by the Department of Environment and Natural Resources and considered a part of
this permit.
This permit shall be effective from the date of issuance until April 30, 2016, shall void Permit No.
WQ0000267 issued June 16, 2011, and shall be subject to the following specified conditions and
limitations:
I. SCHEDULES
In accordance with 15A NCAC 02T .0 116, upon completion of construction and prior to operation of
the new permitted facility, a certification (attached) shall be submitted from a licensed North Carolina
Professional Engineer certifying that the permitted facility has been installed in accordance with this
permit, Division approved plans and specifications, and other supporting documentation, including
the location of all monitoring wells as applicable. If this project is to be completed in phases and
partially certified, the Permittee shall retain the responsibility to track further construction approved
under the same permit, and shall provide a final certificate of Sgmpletion once the entire project has
been completed. Mail the Certification to the Division of Water Quality, Aquifer Protection Section,
1636 Mail Service Center, Raleigh, NC 27699-1636.
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2. The Washington Regional Office, telephone number [phone], shall be notified at least 48
hours in advance (excluding weekends and holidays) of operation of the new installed facilities such
that an in-place inspection can be made. Notification to the Aquifer Protection Section's regional
supervisor shall be made from 8:00 a.m.. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
3. Plans and specifications for a flow measuring device pursuant to Condition N.3, shall be prepared by
a licensed North Carolina Professional Engineer and submitted to the Washington Regional Office 30
days prior to installation. The flow measuring device shall be installed within 180 days of the date of
this permit.
4. No Iater than six months prior to the expiration of this permit, the Permittee shall request renewal of
this permit on official Division forms. Upon receipt of the request, the Division will review the
adequacy of the facilities described therein, and if warranted, will renew the permit for such period of
time and under such conditions and limitations as it may deem appropriate. Please note Rule 15A
NCAC 02T .0105(d) requires an updated site : map to be submitted with the permit renewal
application.
5. Within sixty (60) days of the issuance of this permit, the Permittee shall complete the following
repairs and improvements to the existing spray irrigation disposal field;
i. The grass cover crop shall be mowed and maintained at a maximum vegetative height of
eight (8) inches. The grass clippings shall be cut and baled or otherwise removed from the
site.
ii. A dense, rigorous cover crop of Bermuda grass shall be established and maintained, as
described above. Any trees or other obstructions that limit or inhibit the development of a
rigorous cover crop shall be removed.
iii. The spray irrigation site shall be dethatched and aerated as necessary to facilitate proper
surface infiltration of irrigated effluent.
iv. All sprinklers shall be visually inspected for defects or damage, and all necessary repairs
made to create uniform irrigation application.
v. An irrigation system audit shall be performed by a Certified Landscape Irrigation Auditor
or under the supervision of a North Carolina licensed Professional Engineer to establish
application rates for existing irrigation system. Sprinklers and nozzles shall be adjusted to
achieve no greater than a 0.33 inch per hour (iph) application rate.
Upon completion of repair, maintenance, and/or construction activities required to accomplish the
items described in 1.5, above, a certification (attached) shall be submitted from a licensed North
Carolina Professional Engineer certifying that said repairs and improvements have been installed in
accordance with this permit, Division approved plans and specifications, and other supporting
documentation. Upon receipt and approval of this certification by the Washington Regional Office,
the average daily flow limit may be expanded to 15,000 gallons per day (GPD) and corresponding
maximum annual application rate of 29.25 inches.
R. PERFORMANCE STANDARDS
L The subject non -discharge facilities shall be effectively maintained and operated at all times so there
is no discharge to surface waters, nor any contravention of groundwater or surface water standards.
In the event the facilities fail to perform satisfactorily, including the creation of nuisance conditions
due to improper operation and maintenance, or failure of the irrigation areas to adequately assimilate
the effluent, the Permittee shall take immediate corrective actions including Division required actions,
such as the construction of additional or replacement wastewater treatment or irrigation facilities.
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- 2. This permit shall not relieve the Permittee of their responsibility for damages to groundwater or
surface water resulting from the operation of this facility.
3. All wells constructed for purposes of groundwater monitoring shall be constructed in accordance with
15A NCAC 02C .0108 (Standards of Construction for Wells Other than Water Supply), and any other
jurisdictional Iaws and regulations pertaining to well construction.
4. Effluent limitations shall not exceed those specified in Attachment A.
Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in
Attachment B.
6. The compliance boundary for the disposal system shall be specified in accordance with 15A NCAC
02L .0107(b). This disposal system was individually permitted on or after December 30, 1983;
therefore, the compliance boundary is established at either 250 feet from the effluent disposal area, or
50 feet within the property boundary, whichever is closest to the effluent disposal area. An
exceedance of groundwater standards at or beyond the compliance boundary is subject to remediation
action according to 15A NCAC 02L .0106(d)(2) as well as enforcement actions in accordance with
North Carolina General Statute 143-215.6A through 143-215.6C.
7. In accordance with 15A NCAC 02L .0 108, the review boundary is established midway between the
compliance boundary and the effluent disposal area. Any exceedance of groundwater standards at the
review boundary shall require action in accordance with 15A NCAC 02L.0106.
8. The Permittee shall apply for a permit modification to establish a new compliance boundary prior to
any sale or transfer of property affecting a compliance boundary.
9. In accordance with 15A NCAC 02L .0107(d), no wells, excluding Division approved monitoring
wells, shall be constructed within the compliance boundary except as provided for in 15A NCAC 02L
.0107(g).
10. Except as provided for in 15A NCAC 02L .0107(g), the Permittee shall ensure any landowner who is
not the Permittee and owns land within the compliance boundary shall execute and file with the
Gates County Register of Deeds an easement running with the land containing the following items:
a. A notice of the permit and number or other description as allowed in 15A NCAC 02L A 107(f)(1);
b. Prohibits construction and operation of water supply wells within the compliance boundary; and
c. Reserves the right of the Permittee or the State to enter the property within the compliance
boundary for purposes related to the permit.
The Director may terminate the easement when its purpose has been fulfilled or is no longer needed.
11. The facilities permitted herein shall be constructed according to the following setbacks:
a. The setbacks for irrigation sites permitted under 15A NCAC 02H .0200 shall be as follows (all
distances in feet):
i. Any habitable residence or place of public assembly under separate ownership: 400
ii. Surface waters: 100
iii. Any well with exception of monitoring wells: 100
iv. Any property line: 150
v. Public right of way: 50
b. The setbacks for storage and treatment units permitted under 15A NCAC 02T .0500 shall be as
follows (all distances in feet):
i. Any habitable residence or place of public assembly under separate ownership: 100
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ii. Any private or public water supply source: 100
iii. Surface waters: 50
iv. Any well with exception of monitoring wells: 100
v. Any property line: 50
III. OPERATION AND MAINTENANCE REOUMEMENTS
1. The facilities shall be properly maintained and operated at all times. The facilities shall be effectively
maintained and operated as a non -discharge system to prevent the discharge of any wastewater
resulting from the operation of this facility. The Permittee shall maintain an Operation and
Maintenance Plan pursuant to 15A NCAC 02T .05 07, which at a minimum shall include operational
functions, maintenance schedules, safety measures and a spill response plan.
2. Upon, the Water Pollution Control System Operators Certification Commission's (WPCSOCC)
classification of the subject non -discharge facilities, in accordance with 15A NCAC 08G .0200 the
Permittee shall designate and employ a certified operator in responsible charge (ORC) and one or
more certified operator(s) as back-up ORC(s). The ORC or their back-up shall visit the facilities in
accordance with 15A NCAC 08G .0200, and shall comply with all other conditions specified in the
previously cited rules.
3. A suitable year round vegetative cover shall be maintained at all times, such that crop health is
optimized, allows for even distribution of effluent and allows inspection of the irrigation system.
4. Adequate measures shall be taken to prevent effluent ponding in or runoff from the irrigation sites
listed in Attachment B.
5. Irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause ponding or runoff.
6. All irrigation equipment shall be tested and calibrated at least once per permit cycle. Calibration
records shall be maintained at the facility for a period of no Iess than five years, and shall be made
available to the Division upon request.
7. Only effluent from Gates County WWTF shall be irrigated on the sites listed in Attachment B.
8. No automobiles or machinery shall be allowed on the irrigation sites except during equipment
installation or while maintenance is being performed.
9. Public access to the irrigation sites and wastewater treatment facilities shall be prohibited.
10. The residuals generated from the wastewater treatment facilities shall be disposed or utilized in
accordance with ISA NCAC 02T .1100. The Permittee shall maintain a residual management plan
pursuant to 15A NCAC 02T .0508.
11. Diversion or bypassing of untreated or partially treated wastewater from the treatment facilities is
prohibited.
12. Freeboard in the treatment and storage lagoon shall not be less than two feet at any time.
13. A gauge to monitor waste levels in the treatment and storage lagoon shall be provided. This gauge
shall have readily visible permanent markings, at inch or tenth of a foot increments, indicating the
following elevations: maximum liquid level at the top of the temporary liquid storage volume;
minimum liquid level at the bottom of the temporary liquid storage volume; and the lowest point on
top of the dam.
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14. A protective vegetative cover shall be established and maintained on all earthen embankments (i.e.,
outside toe of embankment to maximum allowable temporary storage elevation on the inside of the
embankment), berms, pipe runs, erosion control areas, and surface water diversions. Trees, shrubs,
and other woody vegetation shall not be allowed to grow on the earthen dikes or embankments.
Earthen embankment areas shall be kept mowed or otherwise controlled and accessible.
IV. MONITORING AND REPORTING REQUIREMENTS
1. Any Division required monitoring (including groundwater, plant tissue, soil and surface water
analyses) necessary to ensure groundwater and surface water protection shall be established, and an
acceptable sampling reporting schedule shall be followed.
2. Per 15A NCAC 02H .0800, a Division certified laboratory shall conduct all laboratory analyses for
the required effluent, groundwater or surface water parameters.
3. Flow through the treatment facility shall be continuously monitored, and daily flow values shall be
reported on Form NDMR.
The Permittee shall install and, maintain an appropriate flow measurement device to ensure the
accuracy and reliability of flow measurement consistent with accepted engineering and scientific
practices. Selected flow measurement devices shall be capable of measuring flows with a maximum
deviation of less than ten percent from true flow; accurately calibrated at a minimum of once per year;
and maintained to ensure the accuracy of measurements is consistent with the selected device's
accepted capability. The Permittee shall maintain records of flow measurement device calibration on
file for a period of at least five years. At a minimum, documentation shall include:
a. Date of flow measurement device calibration,
b. Name of person performing calibration, and
c. Percent from true flow.
4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for
the parameters specified in Attachment A.
The Permittee shall maintain adequate records tracking the amount of effluent irrigated. At a
minimum, these records shall include the following information for each irrigation site listed in
Attachment B:
a. Date of irrigation;
b. Volume of effluent irrigated;
c. Site irrigated;
d. Length of time site is irrigated;
e. Continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings;
f. Continuous monthly and year-to-date loadings for any non -hydraulic parameter specifically
limited in Attachment B;
g. Weather conditions; and
h. Maintenance of cover crops.
6. Freeboard (i.e., waste level to the lowest embankment elevation) in the treatment and storage lagoon
shall be measured to the nearest inch or tenth of a foot, and recorded weekly. Weekly freeboard
records shall be maintained at the facility for a period of no less than five years, and shall be made
available to the Division upon request.
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Three copies of all monitoring data (as specified in Conditions IV.3. and IVA.) on Form NDMR for
each PPI and three copies of all operation and disposal records (as specified in Conditions N.S. and
IV -6.) on Form NDAR-1 for every site in Attachment B shall be submitted on or before the last day of
the following month. If no activities occurred during the monitoring month, monitoring reports are
still required documenting the absence of the activity. All information shall be submitted to the
following address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
A record shall be maintained of all residuals removed from this facility. This record shall be
maintained at the facility for a period of no less than five years, and shall be made available to the
Division upon request. At a minimum, this record shall include:
a. Name of the residuals hauler;
b. Nan -Discharge permit number authorizing the residuals disposal, or a letter from a municipality
agreeing to accept the residuals;
c. Date the residuals were hauled; and
d. Volume of residuals removed.
9. A maintenance log shall be maintained at this facility. This log shall be maintained at the facility for
a period of no less than five years, and shall be made available to the Division upon request. At a
minimum, this log shall include:
a. Date of calibration of flow measurement device;
b. Visual observations of the plant and plant site; and
c. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing,
inspections and cleanings, etc.).
10. Monitoring wells shall be sampled at the frequencies and for the parameters specified in Attachment
C. All mapping, well construction forms well abandonment forms and monitoring data shall refer to
the permit number and the well nomenclature as provided in Attachment C and Figure A.
11. Two copies of the monitoring well sampling and analysis results shall be submitted on a Compliance
Monitoring Forth (GW -59), along with attached copies of laboratory analyses, on or before the last
working day of the month following the sampling month. The Compliance Monitoring Form (GW -
59) shall include this permit number, the appropriate well identification number, and one GW -59a
certification form shall be submitted with each set of sampling results. All information shall be
submitted to the following address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
12. An annual -representative soils analysis (i.e., Standard Soil Fertility Analysis) shall be conducted on
each irrigation site listed in Attachment B. These results shall be maintained at the facility for a
period of no less than five years, and shall be made available to the Division upon request. At a
minimum, the Standard Soil Fertility Analysis shall include the following parameters:
Acidity
Exchangeable Sodium. Percentage
Phosphorus
Base Saturation (by calculation)
Magnesium
Potassium
Calcium
Manganese
Sodium
Cation Exchange Capacity
Percent Humic Matter
Zinc
Copper
pH
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13. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number (252)
946-6481, as _soon _as possible, but in no case more than 24 hours, or on the next working day
following the occurrence,or first knowledge of the occurrence of any of the following:
a. Any occurrence at the facility resulting in the treatment of significant amounts of wastes that is
abnormal in quantity or characteristic, including the known passage of a hazardous substance.
b. Any process unit failure (e.g., mechanical, electrical, etc.), due to known or unknown reasons,
rendering the facility incapable of adequate wastewater treatment.
c. Any facility failure resulting in a by-pass directly to receiving surface waters.
d. Any time self-monitoring indicates the facility has gone out of compliance with its permit
limitations.
e. Ponding in or runoff from the irrigation sites.
Any emergency requiring immediate reporting (e.g., discharges to surface waters, imminent failure of
a storage structure, etc.) outside normal business hours shall be reported to the Division's Emergency
Response personnel at telephone number [phone], [phone], or [phone].
Persons reporting such occurrences by telephone shall also file a written report in letter form within
five days following first knowledge of the occurrence. This report shall outline the actions takers or
proposed to be taken to ensure the problem does not recur.
V. INSPECTIONS
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and irrigation facilities.
2. The Permittee or their designee shall inspect the wastewater treatment and irrigation facilities to
prevent malfunctions, facility deterioration and operator errors resulting in discharges, which may
cause the release of wastes to the environment, a threat to human health or a public nuisance. The
Permittee shall maintain an inspection log that includes, at a minimum, the date and time of
inspection, observations made, and any maintenance, repairs, or corrective actions taken. The
Permittec shall maintain this inspection log for a period of five years from the date of the inspection,
and this Iog shall be made available to the Division upon request.
3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the wastewater treatment and irrigation facilities
permitted herein at any reasonable time for the purpose of determining compliance with this permit;
may inspect or copy any records required to be maintained under the terms and conditions of this
permit, and may collect groundwater, surface water or leachate samples,
V.I. GENERAL CONDITIONS
I. Failure to comply with the conditions and limitations contained herein may subject the Permittee to
an enforcement action by the Division in accordance with North Carolina General Statutes 143-
215.6A to 143-215.6C.
2. This permit shall become voidable if the permitted facilities are not constructed in accordance with
the conditions of this permit, the Division approved plans and specifications, and other supporting
documentation.
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3. This permit is effective only with respect to the nature and volurne of wastes described in the permit
application, Division approved plans and specifications, and other supporting documentation. No
variances to applicable rules governing the construction or operation of the permitted facilities are
granted, unless specifically requested and approved in this permit pursuant to 15A NCAC 02T
.0105(n).
The issuance of this permit does not exempt the Permittee from complying with any and all statutes,
rules, regulations, or ordinances, which may be imposed by other jurisdictional government agencies
(e.g., local, state, and federal). Of particular concern to the Division are applicable river buffer rules
in 15A NCAC 02B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4
and under the Division's General Permit NCG010000; any requirements pertaining to wetlands under
15A NCAC 02B .0200 and 02H .0500; and documentation of compliance with Article 21 ,Part 6 of
Chapter 143 of the General Statutes,
5. In the event the permitted facilities change ownership or the Permittee changes their name, a formal
permit modification request shall be submitted to the Division. This request shall be made on official
Division forms, and shall include appropriate property ownership documentation and other supporting
documentation as necessary. The Permittee of record shall remain fully responsible for maintaining
and operating the facilities permitted herein until a permit is issued to the new owner.
6. The Permittee shall retain a set of Division approved plans and specifications for the life of the
facilities permitted herein.
7. The Permittee shall maintain this permit until all permitted facilities herein are properly closed or
permitted under another permit issued by the appropriate permitting authority pursuant to 15A NCAC
02T.01050).
8. This permit is subject to revocation or unilateral modification upon 60 days notice from the Division
Director, in whole or part for the requirements listed in 15A NCAC 02T .0110.
9. Unless the Division Director grants a variance, expansion of the permitted facilities contained herein
shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b).
10. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to
pay the annual fee accordingly shall be cause for the Division to revoke this permit pursuant to I5A
NCAC 02T .0105(e)(3).
Permit issued this the 29s' day of June 2012
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
111-2
40 Charles Wakild, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0000267
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Permit No. WQ0000267
County of Gates
Gates County W WTF
ENGINEERING CERTIFICATION
❑ Partial 0 final
Wastewater Irrigation System
June 29, 2012
Gates County
In accordance with 15A NCAC 02T .0 116, I,
as a duly registered Professional Engineer in the State of North Carolina, having the Permittee's
authorization to ❑ periodically ❑ weekly ❑ fully observe the construction of the permitted facility,
hereby state to the best of my abilities that due care and diligence was used in the observation of the
construction, such that the facility was built within substantial compliance and intent of this permit, the
Division approved plans and specifications, and other supporting documentation.
❑ Any variation to this permit, the Division approved plans and specifications, and other supporting
documentation has been documented in the attached as -built drawings, and shall serve as the
Permittee's minor modification request to amend the permit accordingly.
Provide a brief narrative description of any variations:
Professional Engineer's Name
Engineering Firm
Mailing Address
I City
Telephone
E-mail
State Zip
NC PE Seal, Sign
THE COMPLETED ENGINEERING CERTIFICATION, INCLUDING ALL SUPPORTING
INFORMATION AND MATERIALS, SHALL BE SENT TO THE FOLLOWING ADDRESS; '
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
AQUIFER PROTECTION SECTION
LAND APPLICATION UNIT
By U.S. Postal Service:
1636 MAIL SERVICE CENTER
By Courier/Special Deliveary:
512 N. SALISBURY ST.
RALEIGH, NORTH CAROLINA 27699-1636 RALEIGH, NORTH CAROLINA 27604
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ATTACHMENT A - MUTATIONS AND MONITORING REQUIREMENTS
PPI 001— WWTF Effluent (prior to completion of improvements specified in 1.5)
Permit Number: WQ0000267 Version: 3.2
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING
REQUIREMENTS2
FCS
Parameter Description
Monthly Average
Monthly Geometric
Daily Minimum
Daily Maximum
Measurement
Sample
Code
Mean
Frequency
Type
31616
Coliform, Fecal MF, M -FC Broth, 44.5 C
;
#/100 ml
I
4 x year
Grab
_—
— _
50060
00610
Chlorine, Total Residual
Nitrogen, Ammonia Total (as N)
mg/l
mg/1
�
I�I
j
5 x week
4 x year'
Grab
Grab
00310
BOD, 5 -Day (20 Deg. C)
mg/1
'
4 x years
Grab
00400
pH
su
E
5 x week
Grab
00530
Solids, Total Suspended
__—
mg/l
- _
4 x year'
Grab
00620
Nitrogen, Nitrate Total (as N)
mg/l
4 x years
Grab
— -
00625
Nitrogen, Kjeldahl, Total (as N)
mg/1
�—
I
4 x year
Grab
50050
Flow, in conduit or thru treatment plant
8,000
gpd
I
Continuous
Recorder
1. 4 x year sampling shall be conducted in March, .Tune, September, and December
2. There shall be no discharge of floating solids or visible foam other than in trace amounts.
WQ0000267 Version 3.2 Attachment A Page 1 of'2

PPI 002 — WWTF Effluent (subsequent to completion of improvements specified in L5)
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING
REQUIREMENTS2
PCS
Code
Parameter Description
P
Month' Average
Y g
Monthly Geometric
Mean
Daily Minimum
Daily Maximum
Measurement
Sample
Frequency
Type
31616
Coliform, Fecal MF, M -FC Broth, 44-5 C
j
4/100 ml
4 x year'
Grab
50060
Chlorine, Total Residual
mg/1
5 x week
Grab
—�
00610
Nitrogen, Ammonia Total (as N)
mg/1
4 x year
Grab
00310
BOD, 5 -Day (20 Deg. C)
mg/1
+
4 x year'
Grab
00400
pH
su
5 x week
Grab
00530
Solids, Total Suspended
mg/l
i }
4 x yearl
Grab
00620
Nitrogen, Nitrate Total (as N)
—
met
--_—--
1
4 x years
Grab
00625
Nitrogen, Kjeldahl, Total (as N)
mg/1
--- –
4 x year'
Grab
50050
Flow, in conduit or thru treatment plant
15,000
gpd
,�
Continuous
Recorder
1. 4 x year sampling shall be conducted in March, June, September, and December
2. There shall be no discharge of floating solids or visible foam other than in trace amounts.
WQ0000267 Version 3.2 Attachment A Page 2 of 2

ATTACHMENT S - APPROVED LAND APPLICATION SITES AND LUMTATIONS
County of Gates — Gates County WWTF
Permit Number: WQ0000267 Version: 3.2
IRRIGATION AREA INFORMATION
APPLICATION LIMI'T'ATIONS i
Field
Owner
County
Latitude
Longitude
Net
Acreage
Dominant
Soil Series
Parameter
Rate
Rate
Yearly Units
Max
41
County of Gates
Gates
36026'09"
76043'20"
2.40
012$4 -Application Surface Irrigation
0.3
15.68 inches
02
County of Gates
Gates
36026'09"
76043'20"
2.30
01284 -Application Surface Irrigation
03
15.6' inches
03
County of Gates
Gates
36°26'09"
76043'20"
2.30
01284 -Application Surface Irrigation
03
15.6 a inches j
Totals
7.00
" Upon completion of repair, maintenance, and/or construction activities required in accordance with Condition I.5, the yearly maximum application rate may be increased to 29.25 inches.
WQ0000267 Version 3.2 Attachment B Page 1 of 2

THIS PAGE BLANK
WQ0000267 Version 3.2 Attachment B page 2 of 2

ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS
Monitoring wells: MW -1, MW -2, MW -3, MW -4
Permit Number: WQ0000267 Version: 3.2
GROUNDWATER CHARACTERISTICS
GROUNDWATER STANDARDS
MONITORING REQUIREMENTS
PCS Code
Parameter Descriptions
Daily Minimum
Daily Maximum
Frequency Measurement
Sample Type
Footnotes
82546
Water level, distance from measuring point
3 x year
Calculated
1,2,3,7
31616
Coliform, Fecal MF, M -FC, l3roth, 44.50
3 x year
Grab
1,7
70300
Solids, Total Dissolved -180 Deg. — C
500 mg/1
3 x year
Grab
1,7
00680
Carbon, Total Organic (TOG)
3 x year
Grab
1,6,7
00940
Chloride (as Cl)
3 x year
Grab
1,7
00400
pH
6.5 su
8.5 su
3 x year
Grab
1,7
00610
Nitrogen, Ammonia Total (as N)
3 x year
Grab
1,7
00620
Nitrogen, Nitrate Total (as N)
10 mg/1
3 x year
Grab
1,7
00665
Phosphorus, Total (as P)
3 x year
Grab
1,7
78732
Volatile Compounds, (GC/MS)
Annually
Grab
1,4,5,7
1. 3 x Year monitoring shall be conducted in March, June & December; Annual monitoring shall be conducted every December.
2. The measurement of water levels shall be made prior to purging the wells. The depth to water in each well shall be measured from the surveyed point on the top of the casing. The measurement
of pH shall be made after purging and prior to sampling for the remaining parameters.
3. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. The measuring points (top
of casing) of all monitoring wells shall be surveyed relative to a common datum.
4. Volatile Organic Compounds (VOC) - In December only, analyze by one of the following methods:
a. Standard Method 6230D, PQL at O.S µg/l_ or less
b. Standard Method 6210D, PQL at 0.5 pg/L or less
C. EPA Method 8021, Low Concentration, PQL at 0.5 µgfL or less
d. EPA Method 8260, Low Concentration, PQL at 0.5 µg/L or less
e. Another method with prior approval by the Aquifer Protection Section Chief
Any method used must meet the following qualifications:
a. A laboratory must be DWQ certified to run any method used.
b. The method used must, at a minimum, include all the constituents listed in Table VIII of Standard Method 6230D.
C. The method used must provide a PQL of 0.5 ltg/L or less that must be supported by laboratory proficiency studies as required by the DWQ Laboratory Certification unit. Any constituents
detected above the MDL but below the PQL of 0.5 µgll, must be qualified (estimated) and reported.
5. If any volatile organic compounds (VOC) are detected as a result of monitoring as provided in Attachment C, then the Washington Regional Office Aquifer Protection Supervisor, telephone
number [phone], must be contacted immediately for further instructions regarding any additional follow-up analyses required.
6. If TOC concentrations greater than 10 mg/l are detected in any downgradient monitoring well, additional sampling and analysis must be conducted to identify the individual constituents
comprising this TOC concentration. If the TOC concentration as measured in the background monitor well exceeds 10 mg/l, this conceritxation will be taken to represent the naturally occurring
TOC concentration. Any exceedances of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional sampling and analysis as described above.
Monitoring wells sha11 be reported consistent with the nomenclature and location information provided in Figure A and this attachment.
WQ0000267 Version 3.2
Attachment C
Page 1 of 1