WQ0016165_Final Permit_20170706

Water Resources
ENVIRONMENTAL QUALITY
July 6, 2017
ROGER D. JONES — PUBLIC SERVICES MANAGER
CITY OF LEXINGTON
28 WEST CENTER STREET
LEXINGTON, NORTH CAROLINA 27292
Dear Mr. Jones:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Director
Subject: Permit No. WQ0016165
City of Lexington WAIS
Wastewater Irrigation System
Davidson County
In accordance with your permit renewal request received May 9, 2017, we are forwarding herewith
Permit No. W00016165 dated July 6, 2017, to the City of Lexington for the continued operation of the
subject wastewater treatment and irrigation facilities. Please note that this renewed permit shall become
effective on August 1, 2017 (i.e., the day after the expiration date of the existing permit).
This permit shall be effective from August 1, 2017 until July 31, 2022, shall void Permit No.
W00016165 issued August 29, 2008, and shall be subject to the conditions and limitations as specified
therein. Please pay particular attention to the monitoring requirements listed in Attachments A and B 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.
Please note the following permit condition and attachment have been modified or removed
since the last permit issuance dated August 29, 2008:
➢ Old Condition 11.3. — This condition has been removed because there are no groundwater
monitoring wells associated with this permit.
➢ Old Attachment A —PPI 001 has been removed because it is not applicable to the wastewater
irrigation system.
Please note the following permit conditions are new since the last permit issuance dated
August 29,2008:
➢ Condition 11.9. — This condition requires the Permittee to ensure any landowner who is not the
Permittee and who owns land within the compliance boundary shall execute and file an
easement with the Davidson County Register of Deeds.
➢ Condition VL8. — This condition notifies the Permittee that 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.
=`^Nothing Compares7—,
State of North Carolina I Environmental Quality I Water Resources I Water Quality Permitting I Non -Discharge Permitting
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919-807-6332

Mr. Roger D. Jones
July 6, 2017
Page 2 of 2
➢ Condition VI.9. — This condition notifies the Permittee that unless the Division Director grants
a variance, expansion of the permitted facilities contained herein shall not be granted if the
Permittee: has been convicted of an environmental crime; has previously abandoned a
wastewater treatment facility; has not paid a civil penalty; is non-compliant with a permit
schedule; or has not paid an annual fee.
➢ Attachment A — Monitoring for Total Nitrogen, Total Phosphorus, and pH has been added to
the effluent monitoring requirements to be consistent with our Non -Discharge Effluent
Monitoring for Domestic Wastewater guidelines. The sampling months for PPI002 have been
changed from March, July and November to March, July and October so the samples are all
collected in months in which the irrigation system is in use.
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.
If you need additional information concerning this permit, please contact Alice M. Wessner at (919)
807-6425 or alice.wessner(amcdenr.gov.
Sincerely,
ZS. Jay Zimmerman, P.G., Director
a Division of Water Resources
cc: Davidson County Health Department (Electronic Copy)
Winston Salem Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Digital Permit Archive (Electronic Copy)
Central Files

I.
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
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
City of Lexington
Davidson County
FOR THE
continued operation of a 9,000 gallon per day (GPD) wastewater treatment and irrigation facility consisting
of:
a 3.84 acre spray irrigation area including 40 sprinkler heads with a maximum 57 foot cast; and all
associated piping, valves, controls, and appurtenances
to serve the City of Lexington WWIS, with no discharge of wastes to surface waters, pursuant to the
application received May 9, 2017, and in conformity with the project plans, specifications, and other
supporting data subsequently filed and approved by the Department of Environmental Quality and
considered a part of this permit.
This permit shall be effective from August 1, 2017 until July 31, 2022, shall void Permit No. W00016165
issued August 29, 2008, and shall be subject to the following specified conditions and limitations:
No later 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.
[15A NCAC 02T .0105(d), 02T .0 106, 02T .0 109, 02T.0 I 15(c)]
WQ0016165 Version 4.0 Shell Version 151201 Page 1 of

H. PERFORMANCE STANDARDS
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. [G.S. 143-
215.1, 143-213.3(a)]
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. [15A NCAC 02B .0200, 02L .0100]
3. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 02T
.0108(b)(1)]
4. Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in
Attachment B. [15A NCAC 02T .0505(n)]
5. 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. [ 15A NCAC 02L .0106(d)(2), 02L .0107(b)]
6. In accordance with 15A NCAC 02L .0108, 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. [15A NCAC 02L
.0 106, 02L .0108]
7. 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. [15A NCAC 02L .0107(c)]
8. 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). [15A NCAC 02L .0107]
9. 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
Davidson 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 .0107(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.
[15A NCAC 02L .0107(f)]
WQ0016165 Version 4.0 Shell Version 151201 Page 2 of 7

10. 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
[15A NCAC 02H.02190)]
b. The setbacks for storage and treatment units permitted under 15A NCAC 02H .0200 shall be as
follows (all distances in feet):
i. Any well with exception of monitoring wells: 100
ii. Any property line: 50
[15A NCAC 02H.02190)]
M. OPERATION AND MAINTENANCE REQUIREMENTS
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,
which at a minimum shall include operational functions, maintenance schedules, safety measures and
a spill response plan. [15A NCAC 02T .0507]
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. [15A NCAC 02T .0117]
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. [ 15A
NCAC 02T .0108(b)(1)]
4. Adequate measures shall betaken to prevent effluent ponding in or runoff from the irrigation sites listed
in Attachment B. [15A NCAC 02T .0108(b)(1)]
5. Irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause ponding or runoff. [15A NCAC 02T .0108(b)(1)]
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 less than five years, and shall be made available to
the Division upon request. [15A NCAC 02T .0108(b)(1)]
7. Only effluent from the Lexington Regional W WTP (Permit No. NC0055786) shall be irrigated on the
sites listed in Attachment B. [G.S. 143-215.1]
8. No automobiles or machinery shall be allowed on the irrigation sites except during equipment
installation or while maintenance is being performed. [15A NCAC 02T .0108(b)(1)]
W00016165 Version 4.0 Shell Version 151201 Page 3 of 7

9. Public access to the irrigation sites and wastewater treatment facilities shall be prohibited. [15A NCAC
02T .0505(q)]
10. The residuals generated from the wastewater treatment facilities shall be disposed or utilized in
accordance with 15A NCAC 02T .1100. The Permittee shall maintain a residual management plan
pursuant to 15A NCAC 02T.0508. [15A NCAC 02T.0508, 02T.1100]
11. Diversion or bypassing of untreated or partially treated wastewater from the treatment facilities is
prohibited. [ 15A NCAC 02T .05050)]
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. [ 15A NCAC 02T .0108(c)]
2. A Division certified laboratory shall conduct all laboratory analyses for the required effluent,
groundwater or surface water parameters. [15A NCAC 02H .0800]
3. Flow through the treatment facility shall be continuously monitored, and daily average flow values
shall be reported on Form NDMR. Flow may be estimated from water use records, provided the
Permittee's water use is metered. Daily average flow values shall be calculated by dividing the monthly
metered water usage by the number of days in the month. [15A NCAC 02T .0105(k), 02T .0108(c)]
4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for
the parameters specified in Attachment A. [15A NCAC 02T .0108(c)]
5. 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.
[ 15A NCAC 02T .0108(c)]
WQ0016165 Version 4.0 Shell Version 151201 Page 4 of 7

6. 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 Condition IV.5.) 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 Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[ 15A NCAC 02T .0105(1)]
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. Non -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.
[15A NCAC 02T .0108(6)(1)]
8. 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. Visual observations of the plant and plant site; and
b. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing, inspections
and cleanings, etc.).
[15ANCAC 02T .0108(b)(1)]
9. 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
[15A NCAC 02T .0108(c)]
W00016165 Version 4.0 Shell Version 151201 Page 5 of

V.
10. Noncompliance Notification:
The Permittee shall report by telephone to the Winston Salem Regional Office, telephone number (336)
776-9800, as soon asosu sible, 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. Treatment of wastes 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 taken or proposed to
betaken to ensure the problem does not recur. [15A NCAC 02T .0105(1), 02T .0108(b)(1)]
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and irrigation facilities. [15A NCAC 02T .0108(b)]
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 Permittee shall maintain this
inspection log for a period of five years from the date of the inspection, and this log shall be made
available to the Division upon request. [15A NCAC 02T .0108(b)]
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. [G.S. 143-21.5.3(a)(2)]
VI. GENERAL CONDITIONS
1. 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. [G.S. 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. [15A NCAC 02T .0110]
3. This permit is effective only with respect to the nature and volume 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).
[G.S. 143-21.5.1]
WQ0016165 Version 4.0 Shell Version 151201 Page 6 of 7

4. 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 General Permit NCGO10000; 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. [15A NCAC 02T .0105(c)(6)]
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. [15A NCAC
02T.0104]
6. The Permittee shall retain a set of Division approved plans and specifications for the life of the facilities
permitted herein. [15A NCAC 02T .0108(b)(1)]
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. [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.0 110. [ 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). [15A
NCAC 02T.01201
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. [15A NCAC 02T
.0105(e)(3)]
Permit issued this the 6' day of July 2017
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
S. Jay Zimmerman, P.G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0016165
WO0016165 Version 4.0 Shell Version 151201 Page 7 of 7

THIS PAGE BLANK

a
�
K
a
y
C
�5
U
O
a
F
3
ao
z
0
bz
ti
of
a
L
.0
o C
L
o
.s
a�
O
t2
r�
a
M
�
!a
d
M
M
ly
E�.I w
M
M
M
M
M
M
e
e
T
.W
Q
s
s
T
H
ca
G
a
d
zT
a Y
o m
r7
� 8
W
L
C7
_T v
i
�
C y
O
O
h �
V
F
e
a
Q
a
W
P7
U
U
w
z
z
z
z
�
K
a
y
C
�5
U
O
a
3
ao
z
0
bz
ti
of
a
L
.0
o C
L
o
.s
a�
O
t2
r�
m
M
�
!a

y
x
b
c�
r�
r
z

0
7
b
0
m
U
�
c
m <
y !+
Fi
o
M
z
O
= V
M
.7
z
�a
O
c
L
a
41
W
d
w
�
¢
E
�
a
N
a
q
z
N
O
a L
U o
O
U
m
rLj
M
PI
y
i
O
00
V
C
�
M
Cl!
O
rOi
C
�
H
m
O
a
o
a
¢
�
o
�
¢
b
O
U
Q
H
¢
0
Fn
K
pd
5
^a
O
c
U
y