WQ0015102_Permit (Issuance)_20170929

Water Resources
Environmental Quality
September 29, 2017
T. Mayne Hill
Hill Oil Co., Inc.
P.O. Box 367
Lexington, NC 27292
Subject: Groundwater Remediation Permit Number WQ0015102
Hill Oil Co., Inc. — Walser's Service
Davidson County
Dear Mr. Hill:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Director
In accordance with your request for permit renewal received July 5, 2017, and additional information
received August 14, 2017, and September 25, 2017, we are forwarding herewith Permit No. WQ0015102
for continued operation of the subject groundwater remediation facility. This permit shall become
effective on February 1, 2018, (i.e., the day after the expiration date of the existing permit), which may
differ from the date of this letter. This permit shall be effective from February 1, 2018, until January 31,
2023, and shall be subject to the conditions and limitations stated therein.
Please note the following changes in your renewed permit:
• Part M.2, the effluent from the treatment system shall be sampled three (3) times per year for
lead. If after three monitoring events lead concentrations meet 15A NCAC 2L .0200 standards,
then sampling may revert to annually.
• Part IV.3, GW-59s no longer need to be submitted to Central or Regional Offices of the DWR.
However, annual reports are still required to be submitted for this site.
• Part VII.9, per the requirements of 15A NCAC 02T .1608, thirty (30) days prior to closure of the
groundwater remediation system, the Permittee shall submit a proposed closure plan for review
and approval by the DWR prior to closing the system.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding.
If you need any additional information concerning this matter, please contact Michael Rogers at 919-807-
6412 or [e-mail].
Nothing Compares'--..
State of North Carolina I Environmental Quality I Division of Water Resources
Water Quality Regional Operations Section
1636 Mail Service Center I Raleigh, North Carolina 27699-1636
919-707-9129

Sincerely,
J C'�.
for S. Jay Zimmerman, P.G.
Director, Division of Water Resources
cc: Davidson County Environmental Health Department
Winston-Salem Regional Office, WQROS
Ayla Homer, Shield Engineering, Inc., 4301 Taggart Creek Road, Charlotte, NC 28208
WQ0015102 Permit File
WQ0015102 Notebook File

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
GROUNDWATER REMEDIATION 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
Hill Oil Company
Davidson County
FOR THE
continued operation of a 1,440 gallon per day (GPD) groundwater remediation facility consisting of a recovery well
with a four inch GED controllerless recovery pump, an oil/water separator, a 250-gallon surge tank with low and
high level switches, BAG filter, transfer pump, a stackable tray aerator, a flow totalizer, a storage tank, I (one)
injection well with emergency float switches, a groundwater collection system with an adjustable rate recovery
pump and air sparging wells powered by a 7.5-horsepower rotary screw compressor and one vapor extraction well
driven by an explosion -proof regenerative 280 CFM blower, all to serve Hill Oil Company Walser's Service located
at 6431 Highway 150, Lexington, NC 27292, with no discharge of wastes to the surface waters, pursuant to the
application received July 5, 2017, and subsequent additional information received by the Division of Water
Resources (Division) August 14, 2017, and September 25, 2017, and in conformity with the project plan,
specifications, and other supporting data subsequently filed and approved by the Division and considered a part of
this permit.
This permit shall be effective from February 1, 2018, (i.e., the day after the expiration date of the existing
permit) until January 31, 2023, and shall be subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
This permit shall become voidable if the soils fail to adequately assimilate the remaining wastes, and may
be rescinded unless .the facilities/wells are installed, maintained, and operated in a manner which will
protect the assigned water quality standards of the surface and groundwaters. In the event that the facility
or injection well(s) fail to perform satisfactorily, or the injection zone fails to adequately assimilate the
injected fluid, the Permittee shall take immediate corrective actions, including the repair, modification, or
abandonment of the facility/wells, as required by the Division of Water Resources. The Permittee may be
required to reduce or eliminate the permitted activity to protect the assigned water quality standards of
surface and groundwaters [15A NCAC 2T .1605(a)].
2. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to surface or
groundwaters resulting from the operation of this facility [15A NCAC 2B .0200; 2L .0100].
3. Any residuals generated from these treatment facilities must be disposed in accordance with General Statute
143-215.1 and in a manner approved by the Division [15A NCAC 2T .1100].
WQ0015102 Non -Discharge (rev. 9/12/2016) Pagel of 5

4. Diversion or bypassing of the untreated groundwater from the treatment facilities is prohibited [I 5A NCAC
2T .0108(bxl)].
5. Adequate measures shall be taken to divert stormwater from the disposal area and prevent wastewater runoff
from the subsurface disposal field [15A NCAC 2T .0108(b)(1)].
H. FACILITY OPERATION AND MAINTENANCE REQUIREMENTS
The facility shall be properly maintained and operated as a non -discharge system to prevent the discharge
of any wastewater resulting from the operation of this facility. The groundwater recovery, treatment and
disposal system shall be inspected monthly. If it is determined that the system is malfunctioning, all
repairs should be made as soon as possible and reported to the Winston-Salem Regional Office with 48
hours. All components of the groundwater recovery, treatment, and disposal system shall be properly
weather -proofed to prevent freezing and failure of the system. [15A NCAC 2T .0108(b)].
2. The injection well(s) shall be operated above the water table at all times [15A NCAC 2T .0108(b)]
3. Upon classification of the wastewater treatment and remediation facilities by the Water Pollution Control
System Operators Certification Commission (WPCSOCC), the Permittee shall designate and employ a
certified operator to be in responsible charge (ORC) and one or more certified operator(s) to be back-up
ORC(s) of the facilities in accordance with 15A NCAC 8G .0201. The ORC shall visit the facilities in
accordance with 15A NCAC 8G .0204 or as specified in this permit and shall comply with all other
conditions specified in these rules [ 15A NCAC 2T .0117].
4. The Permittee shall maintain a log or report including dates and times of inspections, maintenance, repairs
or corrective actions taken by the Permittee, and removal of all residuals from this facility. Residual
removal information shall include the name of the hauler, permit authorizing the disposal of a letter from a
municipality agreeing to accept the residuals, date the residuals were hauled, and volume of residuals
removed. This record shall be maintained by the Permittee and include three years of data and shall be
made available to the Division or other permitting authority, upon request [15'A NCAC 2T .1607(a)].
5. Any duly authorized officer, employee, or representative of the Division may, upon presentation of
credentials, enter and inspect any property, premises or place on or related to the disposal site or facility at
any reasonable time for the purpose of determining compliance with this permit (including inspection,
observation, and sampling associated with injection and any related facilities as provided for in N.C.G.S.
87-90), may inspect or copy any records or annual facility report that must be maintained under the terms
and conditions of this permit, and may obtain samples of groundwater, surface water, injection fluids, or
leachate [N.C.G. S. 143 -215.3 (a)(2)] .
III. MONITORING REQUIREMENTS
1. The effluent from the treatment system shall be sampled annually for the parameters specified below
[15A NCAC 2T. I 607(a)(b)]:
EPA Methods 601 and 602 (with IPE, MTBE, EDR, Xylenes, and Massachusetts Department of
Environmental Protection volatile Petroleum Hydrocarbons (MADEP VHP) and lead (3030C
prep))
PH
2. The effluent from the treatment system shall be sampled three (3) times per year for the parameter
specified below [15A NCAC 2T .1607(a)(b)]:
Lead with Standard Method 3030C preparation.
WQ0015102 Page 2 of 5

If after three monitoring events lead concentrations meet 15A 2L .0200 standards, then sampling
may revert to annually.
3. Prior to sampling the parameters in the on -site wells, the measurement of water levels must be taken. The
depth to water in each well shall be measured from the surveyed point on the top of the casing. The
measuring points (top of well casing) of all monitoring wells shall be surveyed relative to a common
datum [15A NCAC 2L .0110].
4. Any laboratory selected to analyze parameters must be Division of Water Resources certified for those
parameters required [15A NCAC 2H .0800].
5. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided
[15A NCAC 2T .0I08(c)].
IV. REPORTING REOUIR)E;MENTS
1. Copies of all reporting forms including Annual Reports required in this Permit shall be submitted to the
addresses below [15A NCAC 2T .1607]:
UIC Program Water Quality Regional Operations Section
NC Division of Water Resources and DWR Winston-Salem Regional Office
1636 Mail Service Center 450 W. Hanes Mill Road, Suite 300
Raleigh, NC 27699-1636 Winston-Salem, NC 27105
2. The Permittee shall retain records of all monitoring information, including calibration and maintenance
records, continuous monitoring data and reports required by this permit, for at least 3 years from the date
of the sample measurement, report or application. Records of this monitoring information shall include,
but not be limited to, the following [15A NCAC 2T .1607]:
a. the date, exact place, and time of sampling or measurements,
b. the individual who performed the sampling or measurements,
c. the date the analyses were performed,
d. the analytical techniques or methods used, and
e. the results of such sampling, measurements, and analyses.
The Permittee shall submit an Annual Report summarizing the volume and injection pressures of
effluent discharged into the injection well(s) and the summary results of related groundwater, influent,
and effluent monitoring. Isoconcentrations (horizontal and vertical direction) and water level
contour/potentiometric surface maps shall be prepared on an annual basis and submitted with this report.
If an annual report containing this information (e.g. corrective action plan) is required by a regulatory
agency, the Permittee may submit two (2) copies of that report in lieu of the preceding information within
thirty days of its publication [15A NCAC 2T .1607(c)].
V. NON-COMPLIANCE NOTIFICATION
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone number 336-776-
9800, 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 [15A NCAC 2T .0108(b)(1)]:
a. Any occurrence at the groundwater remediation facility which results in any unusual operating
circumstances, or in the treatment of significant amounts of contaminated groundwaters which are
abnormal in quantity or characteristic, such as the dumping of the contents of a basin or tank, the known
passage of a slug of hazardous substance through the facility, or any other unusual circumstances;
WQ0015102 Page 3 of 5

b. Any process unit failure, due to known or unknown reasons, that renders the groundwater treatment
and disposal system, including injection well(s), incapable of adequate treatment and disposal, such as
mechanical or electrical failures of pumps, aerators, compressors, etc.;
c. Any non-compliance with a permit condition due to a malfunction of the system;
d. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to
receiving waters without treatment of all or any portion of the influent to such station or facility; or
e. Any time that monitoring or other information indicates that the groundwater treatment and disposal
system is not in compliance with any specified permit limitations, that any contaminant may be causing
an endangerment to an underground source of drinking water.
2. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at telephone number [phone] or to the Emergency Management's switchboard at (919)
733-3300. Also, persons reporting such occurrences by telephone shall file a written report within five
(5) days following first knowledge of the occurrence. This report must outline the actions taken or
proposed to be taken to ensure that the problem does not recur [15A NCAC 2T .0108(b)(1)].
VI. APPLICABLE BOUNDARIES
The COMPLIANCE BOUNDARY for the waste disposal area is specified by regulations in 15A NCAC
2L, Groundwater Classifications and Standards. The Compliance Boundary for the disposal system
individually permitted after December 30, 1983 is established at either (1) 250 feet from the waste disposal
area., or (2) 50 feet within the property boundary, whichever is closest to the waste disposal area. An
exceedance of Class GA Standards at or beyond the Compliance Boundary is subject to remediation action
according to 15A NCAC 2L .0106(d)(2).
2. The REVIEW BOUNDARY is established around the waste disposal area midway between the Compliance
Boundary and the perimeter of the waste disposal area. Any exceedance of Class GA Standards at the
Review Boundary may require action in accordance with 15A NCAC 21, .0106(d)(1).
VII. GENERAL CONDITIONS
Issuance of this permit does not constitute approval for reimbursement from the Leaking Petroleum
Underground Storage Tank Cleanup Fund (15A NCAC 2P) or any other fund. Additionally, the issuance
of this permit does not remove the Permittee's responsibility to comply with the corrective action
requirements of the Division of Waste Management. Furthermore, the Permittee should notify and report
all changes concerning the remedial system to the Division of Waste Management. It is the Permittee's
responsibility to comply with the requirements of all involved agencies.
This permit shall become voidable unless the facilities are constructed in accordance with the conditions of
this permit, the approved plans and specifications, and other supporting data [15A NCAC 2T .0110].
3. This permit is effective only with respect to the nature and volume of wastes described in the application
and other supporting data [N.C.G.S. 143-215.1 ]
4. This permit is not transferable. In the event the facilities change ownership, or there is a name change of
the Permittee, a formal name change request must be submitted to the Division accompanied by
documentation from the parties involved, and other supporting materials as may be appropriate. The
approval of this request will be considered on its merits and may or may not be approved [15A NCAC 2T
.01041.
5. A set of approved plans and specifications for the subject project must be retained by the Permittee for the
life of this project [15A NCAC 2T .0108(b)(1)].
WQO0i5102 Page 4 of 5

6. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an
enforcement action by the Division in accordance with North Carolina General Statute 143-215.6A to 143-
215.6C.
7. The annual administering and compliance fee must be paid by the Permittee within thirty (30) days after
being billed by the Division. Failure to pay the fee accordingly may cause the Division to initiate action to
revoke this permit as specified by I SA NCAC 2T .0105 (ex3).
8. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal),
which have jurisdiction.
9. Requirements for System Closure
a. 30 days prior to initiation of closure of a groundwater remediation system, the permittee shall submit
the following documentation to the Division:
(1) the reason(s) for closure,
(2) a letter from the oversight agency authorizing closure of the system, and
(3) a description of the proposed closure procedure.
b. The following closure procedures shall be followed:
(1) injection well(s) closure procedures as specified in 15A NCAC 02C .0240, including submittal of
well abandonment records (GW-30) and;
(2) infiltration galleries shall be closed such that the infiltration gallery will be rendered permanently
unusable for the disposal or infiltration of fluids and will not serve as a source or channel of
contamination.
c. Within 30 days following upon completion of the closure of a groundwater remediation system, the
permitteee shall submit the following documentation to the Division:
(1) a description of the completed closure procedure;
(2) the dates of all actions taken relative to the procedure;
(3) a written certification that the closure has been accomplished, and that the information submitted
is complete, factual and accurate; and
(4) well abandonment records (GW-30).
10. If the Penn ittee wants to continue operation of this system, at least six (6) months prior to the expiration of
this permit, the Permittee shall request its extension. Upon receipt of the request, the Commission will
review the adequacy. of the facilities described therein, and if warranted, will extend the permit for such
period of time and under such conditions and limitations as it may deem appropriate [15A NCAC 2T .0109].
Permit issued the 29th day of September 2017
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
mot
for
S. Jay Zimmerman, P.G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0015102
WQ001.5102 Page 5 of 5

DIVISION OF WATER RESOURCES
WQROS
9/25/2017
PERMIT ISSUANCE MEMO
TO: Debra Watts d
FROM: Michael Roge r
RE: Renewal without Modification for Permit WQ0015102
Hill Oil Co. — Walser's Service
I recommend that the above permit be renewed. This is non -discharge system where GW is removed
treated and then re -injected via injection well.
HIGHLIGHTS/COMMENTS:
This permit was originally issued on June 15, 1998 and has been renewed several times over the
years. The current permit expires January 31, 2018.
REGIONAL OFFICE COMMENTS: Winston-Salem Regional Office recommends issuance of this permit.
S. Wang requested lead be sampled for 3X per year as there has been in the past where lead values was
higher in the effluent than in the influent (see correspondence between Wang and Shield Engineering)
I reflected this change in the permit.