WQ0004728_Final Permit_20010514

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Fasley, Governor
William G. Ross Jr., Secretary
Kerr T. Stevens, Director
May 14, 2001
MR. FLOYD A. EVANS, MAYOR
TOWN OF FREMONT
POST OFFICE Box 818
FREMONT, NORTH CAROLINA 27830
Dear Mr. Evans:
NCDENR
NORTH CAROLINA DEPARTMENT- OF
ENVIiRONMENT AND NATURAL RESOURCES
Subject: Permit No. WQ0004728
Town of Fremont
Fremont Wastewater Treatment PIant
and Spray Irrigation Facilities
Wastewater Spray Irrigation System
Wayne County
In accordance with your permit renewal application received on December 14, 2000, we are forwarding
herewith Permit No. WQ0004728, dated May 14, 2001, to the Town of Fremont for the continued operation of
I
the subject wastewater treatment and spray irrigation facilities.
This permit shall be effective from the date of issuance until April 30, 2006; shall void Permit No.
WQ0004728, issued March 15, 1996; and shall be subject to the conditions and limitations as specified therein.
This permit approves the continued operation of the subject wastewater treatment and spray irrigation
facilities for another five-year cycle. However, please take the time to review this permit thoroughly as some of
the conditions contained therein may have been added or changed since the last issuance of this permit. Of
special interest are the following:
♦ General: The system description has been amended to reflect the fact that, even though 43.5 acres
are available, only 29.0 acres of land is currently being used for spray irrigation (i.e., the remaining
14.5 acres have been removed from service).
♦ Condition I. 5.: A footnote has been added to this condition to acknowledge that the minimum
State -required buffer between the spray irrigation areas and drainageways (i.e., 100 feet) is not
being met by the current operation. Considering that the subject spray irrigation facilities are to be
taken off-line soon, the Division of Water Quality (Division) will not require that the facilities be
modified to remove this buffer violation.
♦ Condition H. 2.: This condition has been amended to reflect the adoption of new rules by the' Water
Pollution Control System Operators Certification Commission (WPCSOCC). The referenced
regulation is now 15A NCAC 8G A202.
♦ Condition II. 3.: This condition has been amended to reflect that a suitable vegetative cover needs
to be maintained on the spray irrigation field year round.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycledl10% post -consumer paper

♦ Condition II. 7.: The Water Quality Section of the Division's Washington Regional Office has
confirmed that all of the 29.0 acres currently being sprayed upon is comprised of Nahunta soil
series. Therefore, this condition has been amended to remove references of maximum hydraulic
loading rates for other soil series. In addition, the cumulative pollutant loading rate language has
been retained in this permit condition, regardless of the fact that no significant industrial users
(SIUs) are currently tributary to the subject wastewater treatment and spray irrigation facilities.
♦ Section III: The Division is aware that there are no SIUs currently tributary to the subject
wastewater treatment and spray irrigation facilities. However, these pretreatment requirements are
being retained in this permit based on a recommendation from the Division's Pretreatment Unit. A
note has been added to remind the Permittee that compliance with this section of the permit would
only be required in the event that one or more SIJs become tributary to these facilities_
♦ Condition 1V. 2.: This is a new condition that is required in all permits issued to non -discharge
wastewater treatment and disposal systems in the State of North Carolina. Specifically, this
condition details the requirements for complying with the influent flow measuring policy adopted
by the Division of Water Quality (Division) on May 31, 2000. Daily influent flow volumes must
now be reported on Forth NDMR-1 such that this form would be submitted on a monthly basis.
♦ Condition IV. 3.: This is a new condition that requires that freeboard measurements be taken in
both of the treatment/storage lagoons on a daily basis using freeboard markers. If permanent
freeboard markers are not currently available, they must be installed within 30 days of this permit's
issuance. The results of such measurements have to be maintained by the Permittee for a period of
not less than five years.
♦ Condition N. 4.: This condition has been amended to remove the requirement to monitor the
amount of plant available nitrogen (PAN) and phosphorus applied to the wetted area of the spray
irrigation facilities, as it is not required to monitor the wastewater effluent for these parameters
♦ Condition IV. 5.. Note that fecal coliform must now be monitored (i.e., in lieu of total coliform) in
the wastewater effluent, per Division policy.
♦ Condition IV. 6.: Note that exchangeable sodium percentage has been added to the list of
parameters for which soil samples from the spray irrigation field must be analyzed on an annual
basis/.
♦ Condition IV. 7.: Because of the Division's influent wastewater flow measurement policy, Form
NDMR-1 must now be submitted on a monthly basis (i.e., following installation of the new influent
flow measurement device). Note also that this condition has been modified to remove the
requirement to submit annual soil analyses as well as to reflect the new mailing address to be used
when submitting Form NDAR-1 and NDMR-1.
♦ Condition IV. 8.: The- Permittee is now responsible for reporting any non -compliant events that
may cause an exceedance of the groundwater quality standards (i.e., 15A NCAC 2L) to occur.
Events of non-compliance must now be submitted to the Division in written form within five days
(i.e., reduced from 15 days) of the event's occurrence. Note also that the area code for the
Washington Regional Office's telephone number has changed from 919 to 252.
♦ Condition V. I. : Note that total ammonia -nitrogen must now be monitored (i.e., in lieu of
ammonia -nitrogen) in the groundwater and that additional analytical methods for volatile organic
compounds are now available for use. Furthermore, this condition now requires that all analyses
completed for the purpose of the groundwater monitoring program should be done by a laboratory
that has been Division -certified to perform the analysis for a specific parameter.
♦ Condition V. 5.: This condition has been amended to reflect the new mailing address to use when
sending in groundwater quality monitoring reports as well as to provide information as how to
obtain the most recent forms to use for the groundwater monitoring program.
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♦ Condition VII. 3.: This condition has been amended to reflect the fact that an application fee is no
longer required when making an application to the Division to transfer this permit to a new owner or
to reissue this permit such that it reflects a name change of the Permittee.
♦ Condition VII, 5.: Language has been added to this condition to provide examples of some other
rules and regulations that may affect non -discharge systems like this one. In addition, this condition
has been amended to remind the Permittee that this permit does not preclude compliance with any
Special Order of Consent that has been approved by the Environmental Management Commission
for the subject wastewater treatment and spray irrigation facilities.
♦ Condition VII. 9.: This is a new condition that has been added to this permit to direct the Permittee
as to what actions will be necessary once the connection to the City of Goldboro's wastewater
collection system. Specifically, the Permittee will be required to request rescission of this permit as
well as a modification of the Permittee's system -wide wastewater collection system permit (i.e.,
Non -Discharge Permit No. WQCS00298) within 180 days of the connection.
As always, please pay particular attention to the monitoring requirements in this permit. Failure to
establish an adequate system for collecting and maintaining the required operational information will result in
future compliance problems.
If any parts, requirements, or Iimitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within 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 additional information concerning this matter, please contact Ms. Shannon Mohr Thornburg
at [phone], extension 353.
Sine
Kerr T. Stevens
cc: Wayne County Health Department
Washington Regional Office, Water Quality Section
Washington Regional Office, Groundwater Section
Central Office, Groundwater Section
Non -Discharge Compliance/Enforcement Unit
Technical Assistance and Certification Unit
Pretreatment Unit
Construction Grants and Loans Section
NDPU File

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER SPRAY 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
Town of Fremont
Wayne County
FOR THE
continued operation of a 246,000-gallon per day wastewater treatment and spray irrigation system, consisting of
the following minimum components: two facultative lagoons; a chlorination facility; a flow measuring device;
two 200-gallon per minute spray irrigation pumps; 43.5 acres of available spray irrigation area, 29.0 acres of
which are actively used for the purposes of spray irrigation with the remaining 14.5 acres having been removed
from service through the elimination or valving off of the sprinklers; and all associated piping, valves, controls,
and appurtenances necessary to make a complete and operational system. The above -described wastewater
treatment and spray irrigation disposal system is intended to serve the Town of Fremont and its wastewater
customers with no discharge of wastes to surface waters, pursuant to the permit renewal application received on
December 14, 2000, and in conformity with the project plan, 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, 2006; shall void Permit No.
WQ0004728, issued March 15, 1996; and shall be subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
The wastewater treatment and spray irrigation facilities shall be effectively maintained and operated
at all times so that there is no discharge to the surface waters nor any contamination of groundwater
that will render them unsatisfactory for normal use. In the event that these facilities fail to perform
satisfactorily, including the creation of nuisance conditions or failure of the irrigation areas to
assimilate the wastewater adequately, the Permittee shall take immediate corrective actions
including those actions that may be required by the Division of Water Quality (Division), such as
the construction of additional or replacement wastewater treatment and disposal facilities.
2. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to
surface waters or groundwater resulting from the operation of the wastewater treatment and spray
irrigation facilities.

3. The residuals generated from the wastewater treatment facility shall be disposed in accordance with
North Carolina General Statute § 143-215.1 and in a manner approved by the Division.
4. Diversion or bypassing of the untreated wastewater from the wastewater treatment and/or spray
irrigation facilities shall be prohibited.
The following buffers shall be maintained by the wastewater treatment and spray irrigation
facilities;
a. 400 feet between the wetted area and any residence or place of public assembly under separate
ownership,
b. 150 feet between the wetted area and any property line,
c. 100 feet between the wetted area and any well (i.e., with the exception of an approved
groundwater monitoring well),
d. 100 feet between the wetted area and any drainageway or surface water',
e. 50 feet between the wetted area and any public right-of-way,
f. 100 feet between wastewater treatment units and any well (i.e., with the exception of an
approved groundwater monitoring well), and
g. 50 feet between wastewater treatment units and any property line.
Some of the buffers specified above may not have been included in previous permits for the
wastewater treatment and spray irrigation facilities. The Permittee does not have to modify
previously -approved facilities to comply with these buffers unless specifically required by the
Division to do so, nor are these buffers intended to prohibit or prevent modifications that may be
required by the Division to improve the performance of the existing facilities. These buffers do,
however, apply to modifications of the system that are for the purpose of increasing the wastewater
flow that is tributary to the facilities. These buffers do apply to any expansion or modification of
the facilities and apply in instances in which the sale of property would cause any of the buffers
with which the facilities now comply to be violated. The Permittee shall be advised that any
modification to the existing facilities will require a permit modification.
a The Division is aware that there are two drainageways running through the wetted area of the
spray irrigation facilities and, therefore, the Permittee is unable to comply fully with this
condition. Spray irrigation shall be allowed to proceed with the equipment as currently
installed, regardless of the fact that this buffer is violated.
11. OPERATION AND MAINTENANCE REQUIREMENTS
The wastewater treatment and spray irrigation facilities shall be properly maintained and operated at
all times.
2. Upon classification of the wastewater treatment and spray irrigation facilities by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), the Permittee shall employ a
certified wastewater treatment plant operator to be in responsible charge (ORC) of the facilities. The
operator shall hold a certificate of the type and grade at least equivalent to or greater than the
classification assigned to the facilities by the WPCSOCC. The Permittee shall also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions of 15A
NCAC 8G .0202. The ORC shall visit each Class I facility at least weekly and each Class II, Ill,
and IV facility at least daily, excluding weekends and holidays; shall properly manage and
document daily operation and maintenance of the facilities; and shall comply with all other
conditions of 15A NCAC 8G .0202.
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3. A suitable year-round vegetative cover shall be maintained on the wetted area of the spray irrigation
facilities.
4. Irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the wetted area of the spray
irrigation facilities.
6. The wastewater treatment and spray irrigation facilities shall be effectively maintained and operated
as a non -discharge system to prevent the discharge of any wastewater resulting from the operation
of these facilities.
7. The application rate onto the wetted area of the spray irrigation facilities shall not exceed a
cumulative loading of 52.0 inches over any 12-month period at an instantaneous application rate
such that runoff from the wetted area of the spray irrigation facilities does not occur. In addition to
the hydraulic parameters described above, the application rate onto the wetted area of the spray
irrigation facilities shall be such that the metal loading rates shall not exceed the following
Cumulative Pollutant Loading Rates (CPLRs) for the life of the facilities:
Kilograms
Pounds
Parameters
per Hectare
per Acre
Arsenic
41
36
Cadmium
39
34
Copper
1,500
1,338
Lead
300
267
Mercury
17
15
Nickel
420
374
Selenium
100
89
Zinc
2,800
2,498
No type of wastewater other than effluent from the Town of Fremont's Wastewater Treatment
Facility shall be sprayed onto the wetted area of the spray irrigation facilities.
No traffic or equipment shall be allowed on the wetted area of the spray irrigation facilities except
while installation occurs or while normal maintenance is being performed.
10. Public access to the wetted area of the spray irrigation facilities shall be controlled during active
use. Such controls may include the posting of signs that describe the activities being conducted at
the facilities.
11. Freeboard in the two treatment/storage lagoons shall not be less than two feet at any time.
III. PRETREATMENT REQUIREMENTS
(NOTE THAT COMPLIANCE WITH THIS SECTION SHALL BE REQUIRED ONLY IF ONE OR
MORE SIGNIFICANT INDUSTRIAL USERS BECOME TRIBUTARY TO THE WASTEWATER
TREATMENT AND SPRA Y IRRIGA TION FACILITIES.)
A. Requirements for Control of Pollutants Attributable to Industrial Users
Pollutants attributable to inputs from industries using the municipal system may be present in
the Permittee's discharge. At such time as sufficient information becomes available to
establish limitations for such pollutants, this permit may be revised to specify effluent
limitations for any or all of such other pollutants.

2. Under no circumstances shall the Permittee allow introduction of the following wastes in the
waste treatment system:
a. Pollutants which create a fire or explosion hazard in the publicly -owned treatment works
(POTW), including, but not limited to, waste streams with a closed cup flashpoint of less
than 140 degrees Fahrenheit or 60 degrees Centigrade using the test methods specified in
40 CFR 261.21;
b. Pollutants which will cause corrosive structural damage to the POTW, but in no case
Discharges with pH lower than 5.0, unless the works is specifically designed to
accommodate such Discharges;
C. Solid or viscous pollutants in amounts which will cause obstruction to the flow in the
POTW resulting in Interference;
d. Any pollutant, including oxygen -demanding pollutants (i.e., BOD, etc.) released in a
Discharge at a flow rate and/or pollutant concentration which will cause Interference with
the POTW;
e. Heat in amounts which will inhibit biological activity in the POTW resulting in
Interference, but in no case heat in such quantities that the temperature at the POTW
Treatment Plant exceeds 40°C (104°F) unless the Division, upon request of the POTW,
approves alternate temperature limits;
f. Petroleum oil, non -biodegradable cutting oil, or products of mineral oil origin in amounts
that will cause Interference or pass through;
g. Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW
in a quantity that may cause acute worker health and safety problems;
h. Any trucked or hauled pollutants, except at discharge points designated by the POTW.
3. It may be necessary for the Permittee to supplement the requirements of 15A NCAC 2H .0900
to ensure compliance by the Permittee with all applicable limitations. Such actions by the
Permittee may be necessary regarding some or all of the industries discharging to the
municipal system.
4. The Permittee shall require any industrial discharges into the permitted system to meet the
regulations of 15A NCAC 2H .0900. Prior to accepting wastewater from any significant
industrial user, the Permittee shall either develop and submit to the Division a Pretreatment
Program for approval per 15A NCAC 2H .0907(a) or modify an existing Pretreatment
Program per 15A NCAC 2H .0907(b).
5. This permit shall be modified, or alternatively, revoked and reissued, to incorporate or modify
an approved POTW Pretreatment Program or to include a compliance schedule for the
development of a POTW Pretreatment Program as required under the 15A NCAC 2H .0900
regulations by the requirements of the approved State pretreatment program, as appropriate.
B. Pretreatment Program Requirements
Under authority of North Carolina General Statute § 143-215.3 (14) and implementing regulations
15A NCAC 2H .0900, and in accordance with the approved pretreatment program, all provisions
and regulations contained and referenced in the Pretreatment Program Submittal are an enforceable
part of this permit.
4

The Permittee shall operate its approved pretreatment program in accordance with the State
Pretreatment Regulations 15A NCAC 2H .0900 and the legal authorities, policies, procedures, and
financial provisions contained in its pretreatment program submission and Division -approved
modifications thereof. Such operation shall include but is not limited to the implementation of the
following conditions and requirements:
1. Sewer Use Ordinance (SUO): The Permittee shall maintain adequate Iegal authority to
implement its approved pretreatment program;
2. Industrial Waste Survey (IWS): The Permittee shall update its IWS of all users of the sewer
collection system at least once every five years;
3. Monitoring Plan: The Permittee shall implement a Division -approved Monitoring Plan for
the collection of facility specific data to be used in a wastewater treatment plant Headworks
Analysis (HWA) for the development of specific pretreatment local limits;
4. HWA and Local Limits: The Permittee shall obtain Division approval of a HWA at least
once every five years and as required by the Division. The Permittee shall develop, in
accordance with 15A NCAC 2H .0900, specific Local Limits to implement the prohibitions
listed in 15A NCAC 211.0909;
5. Industrial User Pretreatment Permits (IUP) and Allocation Tables: In accordance with North
Carolina General Statute § 143-215.1, the Permittee shall issue to all significant industrial
users, permits for operation of pretreatment equipment and discharge to the Permittee's
treatment works. These permits shall contain limitations, sampling protocols, reporting
requirements, appropriate standard and special conditions, and compliance schedules as
necessary for the installation of treatment and control technologies to assure that their
wastewater discharge will meet all applicable pretreatment standards and requirements. The
Pernidnee shall maintain a current Allocation Table (AT) which summarizes the results of the
HWA and the limits from all Industrial User Pretreatment Permits (fUP). Permitted IUP
loadings for each parameter cannot exceed the treatment capacity of the POTW as determined
by the HWA;
6. Authorization to Construct (A to C): The Permittee shall ensure that an A to C is issued to all
applicable industrial users for the construction or modification of any pretreatment facility.
Prior to the issuance of an A to C, the proposed pretreatment facility and treatment process
must be evaluated for its capacity to comply with all IUP limitations;
7. POTW Inspection and Monitoring of their Significant Industrial_Users (SOUs): The Permittee
shall conduct inspection, surveillance, and monitoring activities as described in its Division -
approved Pretreatment Program in order to determine, independent of information supplied by
industrial users, compliance with applicable pretreatment standards. The Permittee shall:
a. inspect all STUB at least once per calendar year; and
b. Sample all SIUs at least twice per calendar year for all permit -limited pollutants, once
during the period from January 1" through June 3& and once during the period from
July I" through December 315t, except for organic compounds which shall be sampled
once per calendar year;
S1U Self Monitoring and Reporting: The Permittee shall require all industrial users to comply
with the applicable monitoring and reporting requirements outlined in the Division -approved
Pretreatment Program, the industry's pretreatment permit, or in 15A NCAC 2H .0908;

9. Enforcement Response Plan (ERP): The Permittee shall enforce and obtain appropriate
remedies for violations of all pretreatment standards promulgated pursuant to section 307(b)
and (c) of the Clean Water Act (i.e., 40 CFR 405 et seq.), prohibitive discharge standards as
set forth in 15A NCAC 2H .0909, and specific local limitations. All enforcement actions
shall be consistent with the ERP approved by the Division;
10. Pretreatment Annual Reports (PAR): The Permittee shall report to the Division in accordance
with 15A NCAC 2H .0908. In lieu of submitting annual reports, Modified Pretreatment
Programs developed under 15A NCAC 2H .0904 (b) may be required to meet with Division
personnel periodically to discuss enforcement of pretreatment requirements and other
pretreatment implementation issues.
For all other active pretreatment programs, the Permittee shall submit two copies of a PAR
describing its pretreatment activities over the previous 12 months to the Division at the
following address:
NCDENR-DWQ
Water Quality Section
Pretreatment Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
These reports shall be submitted according to a schedule established by the Director and shall
contain the following minimum information:
a. Narrative: A brief discussion of reasons for, status of, and actions taken for all SIUs in
Significant Non -Compliance (SNC);
b. Pretreatment Program Summary (PPS): A PPS on specific forms approved by the
Division;
C. Significant Non -Compliance Report (SNCR): The nature of the violations and the
actions taken or proposed to correct the violations on specific forms approved by the
Division;
d. Industrial Data Summary Forms (IDSF) Monitoring data from samples collected by
both the POTW and the SILT. These analytical results shall be reported on IDSF or
other specific format approved by the Division;
C. Other Information: Copies of the POTW's allocation table, new or modified
enforcement compliance schedules, public notice of S1Us in SNC, and any other
information, upon request, which in the opinion of the Director is needed to determine
compliance with the pretreatment implementation requirements of this permit;
11. PubIic Notice: The Permittee shall publish annually a Iist of SIUs that were in SNC as
defined in the Permittee's Division -approved SUO with applicable pretreatment requirements
and standards during the previous 12-month period. This list shall be published within two
months of the applicable 12-month period.;
12. Recordkeepin& The Permittee shall retain, for a minimum of three years, records of
monitoring activities and results, along with support information including general records,
water quality records, and records of industrial impact on the POTW;
13. Funding and Financial Report: The Permittee shall maintain adequate funding and staffing
levels to accomplish the objectives of the Division -approved Pretreatment Program;

Classification of Spray Irrigation Water Pollution Control Systems:
Systems which utilize spray irdgation for the reuse or disposal of wastezwatex. .
-These systems include: septic tanks, sand filter, oillwater separators, lagoons,
storage basins, screening, sedimentation. Systems other than those listed above
shall be subject to additional classification.
Classification of Land Application of Residuals Systems:
Systems permitted and dedicated for land application of residuals that are produced by a
water pollution control system or contaminated soils.
Classification of Phvsical/Cbemical Water Pollution Control Treatment Systems:
Grade I Physic-d/Chernical: Any water pollution control system that utilizes a primarily
physical process to treat wastewater. This classification includes groundwater
remediation systems. **
Grade H Physical/Chemical: Any water pollution control system that utilizes a primarily
chemical process to treat wastewater. This classification includes reverse osmosis,
electrodialysis, and ultmfiltzation systems. **
** Any water pollution control system that utilizes a phyicaYchemical process to enhance an
activated sludge or fated growth process, shall not be subject to additional classification.
Classification of Subsurface Water Pollution Control Systems:
Systems which utilize the soil for subsurface treatment and disposal of wastewater
and/or are required to have a certified operator under 15A NCAC.1.8A_1951. ***
***Any subsurface system that has as part of its treatment process a water pollution control
systems that may be classified underRules. 0302 through .0307 of this section shall be
subject to addional classification.

Definitions
Activated Sludge - shall mean a biological wastewater treatment process in which predominantly
biodegradable polluntants in wastewater are absorbed, or adsorbed by living aerobic organisms and
bacteria. :.... ... _
Chemical Process - shall mean a wastewater pollution control system process consisting
exclusively of the addition of chemicals to treat wastewater.
Collection System - shall mean a continuous connections of pipelines, conduits, pumping
stations, and other related constructions used to conduct wastewater to the water pollution .
control system. . - - _
Electrodialysis System - shall mean a system utlizing a selective separation of dissolved solids
process that is based on electrical charge and diffusion through a semipermeable membrane.
Physical Process - shall mean any water pollution control system process consisting of
electrodialysis; adsorption, absorption, air stripping, gravimetric sedimentation, floation, and
filtration as a means of treatment
Reverse Osmosis System - shall mean a system which utilizes solutions and 'semipermable
membranes to separate and treat wastewater.
Ultrafiltration System - shall mean a system which utilizes a membrane filter to remove
pollutants from wastewater.
Water Pollution Control System - shall mean any system for the collection, treatment, or
disposal of wastewater and is classified under the provision of G.S. 9OA-37. "
Note: Please refer to G.S. 90A-37 for additional information and definitions.

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