WQ0000193_Final Permit_20000609

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
June 9, 2000
Mr. James W. Fulton, Jr.
Bald Head Island Utilities Inc.
Post Office Box 3069
Bald Head Island, NC 28461
Dear Mr. Fulton:
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NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Permit No. WQ0000193
B.H.I. Utilities, Inc.
Wastewater Treatment Facility with
Disposal by Infiltration Lagoon
Brunswick County
In accordance with your application received October 26, 1999, we are forwarding herewith Permit
No. WQ0000193, dated June 6, 2000, to Bald Head Island Utilities for the construction and continued
operation of the subject wastewater treatment facility with wastewater disposal by infiltration lagoon.
This permit shall be effective from the date of issuance until May 31, 2005, shall void Permit No.
WQ0000193 issued October 27, 1997, and shall be subject to the conditions and limitations as specified
therein. The permit has been modified to add two infiltration lagoons which bring the total area for infiltration
to 3.35 acres. 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 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.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

One set of approved plans is being forwarded to you. If you need additional information concerning
this matter, please contact Teresa Rodriguez at [phone] extension,�58.
11 . - V /Z
T. Stevens
cc: Brunswick County Health Department
McKim & Creed Engineering
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
INFILTRATION LAGOON 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
Bald Head Island Utilities, Inc.
Brunswick County
FOR THE
construction and operation of a 200,000 GPD wastewater treatment facility with disposal by infiltration lagoon
or spray irrigation (reuse) system (which is permitted under WQ0010834).
The facility consists of the Timber Creek WWTP which is used as flow equalization, approximately 827 linear
feet of 8 -inch gravity sewer, an 87 GPM pump station with dual pumps, high water alarms and approximately
4,000 linear feet of 4 -inch force main to pump wastewater from the abandoned Central WWTP to the influent
pump station located near the Timber Creek WWTP, approximately 4,000 linear feet of 6 -inch force main, a
700 GPM influent pump station with dual pumps, high water alarms, a 25 -kW stand-by generator and
approximately 3,100 linear feet of 10 -inch force main, a 200,000 GPD wastewater treatment facility consisting
of a flow meter, a manually cleaned bar screen, flow splitter box, a sequential batch reactor wastewater
treatment facility with dual 155,000 gallon aeration and clarifier basins with three (3) 25 HP blowers, two (2) 5
HP mixers, and three (3) 2 HP sludge pumps, a 196,400 gallon sludge holding tank with a 30 HP aqua -jet
aerator and a 2 HP transfer pump, two (2) 40 ft2 traveling bridge filters, a 68,825 gallon post equalization and
holding basin with a 2 HP mechanical floating aerator and three (3) 3 HP transfer pumps, gas chlorination with
a 13,000 gallon chlorine contact tank, approximately 3,000 linear feet of force main to pump the effluent to the
infiltration lagoons manhole, a 2.04 acre infiltration lagoon, a 0.76 acre infiltration lagoon and a 0.55 acre
infiltration lagoon;
to serve Bald Head Island, with no discharge of wastes to the surface waters, pursuant to the modification
request received October 26, 1999 , 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 May 31, 2005, shall void Permit No.
WQ0000193 issued October 27, 1997, and shall be subject to the following specified conditions and
limitations:

I. PERFORMANCE STANDARDS
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been
installed in accordance with this permit, the approved plans and specifications, and other
supporting materials. If this project is to be completed in phases and partially certified, you shall
retain the responsibility to track further construction approved under the same permit, and shall
provide a final certificate of completion once the entire project has been completed. Mail the
Certification to the Non -Discharge Permitting Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
2. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, 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 or disposal facilities.
3. This permit shall become voidable if the soils fail to adequately assimilate the wastes and may be
rescinded unless the facilities are installed, maintained, and operated in a manner which will
protect the assigned water quality standards of the surface waters and ground waters. The ponding
of wastewater on the surface of the distribution field when the dosing cycle commences shall be
considered as evidence of failure of the soils to adequately assimilate the wastewater.
Additionally, such failure shall be interpreted as a violation of this permit condition.
4. The 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.
6. Adequate measures shall be taken to divert stormwater from the high rate infiltration area and to
prevent wastewater runoff.
Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
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.
II. OPERATION AND MAINTENANCE REQUIREMENTS
The facilities shall be properly maintained and operated at all times.
Upon classification of the facility by the Water Pollution Control System Operator Certification
Commission (WPCSOCC), the Permittee shall employ a certified wastewater treatment plant
operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator
must hold a certificate of the type and grade at least equivalent to or greater than the classification
assigned to the wastewater treatment facilities by the WPCSOCC. The Permittee must also
employ a certified back-up operator of the appropriate type and grade to comply with the
conditions of 15A NCAC 8A .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class II, 111, and IV facility at least daily, excluding weekends and holidays,
and must properly manage and document daily operation and maintenance of the facility and must
comply with all other conditions of 15A NCAC 8A .0202.
The facilities shall be effectively maintained and operated as a non -discharge system to prevent
the discharge of any wastewater outside of the infiltration lagoon, which result from the operation
of this facility.
4. Freeboard in the infiltration lagoon shall not be less than two feet at any time.
2

II.
7. The screenings removed from the wastewater treatment plant shall be properly disposed in a
sanitary landfill or by other means which have been approved by this Division.
10. An automatically activated standby power source shall be on site and operational at all times. If a
generator is employed as an alternate power supply, it shall be tested weekly by interrupting the
primary power source.
11. The flow measurement device shall be calibrated annually by a representative of a firm which is
routinely engaged in the calibration of flow measurement devices. Records of this calibration,
including all information pertinent to the calibration, shall be available during any inspection by
Division staff.
12. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records of this
maintenance shall be maintained by the permittee.
13. The permitee shall provide for the pump station and force main the following items:
a. Pump on/off elevations located so that 2-8 pumping cycles may be achieved per hour in the
pump station,
b. An air relief valve located at all high points along the forcemain,
c. A screen vent for the wet well,
d. Fillets located in the wet well at the intersection of the flooring and sidewalls,
e. Three feet cover over the forcemain or the use of ferrous material where three feet can not be
maintained,
f. Sufficient devices which will protect the pump station from vandals, and
g. Flood protection if the pump station is located below the 100 -yr flood elevation.
MONITORING AND REPORTING REQUIREMENTS
Any monitoring deemed necessary by the Division to insure surface and ground water protection
will be established and an acceptable sampling reporting schedule shall be followed.
2. As an indicator of proper operation and maintenance, the facility shall produce an effluent in
compliance with the following limitations:
Parameter
Flow
BODS (5 -day, 20°C)
NH3 as N
TSS
Fecal Coliform
Monthlv A
200,000 GPD
10 mg/1
4 mg/1
20 mg/l
b
14 per 100 ml
Maximum
43 per 100 ml
a
Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples
collected during the reporting period.
b
Monthly average for fecal coliform shall be the geometric mean of all samples collected during
the reporting period.
Daily maximum shall be the maximum value of all samples collected during the reporting
period.

The effluent from the subject facilities shall be monitored, by the Permittee, at the point prior to
discharge to the infiltration lagoon for the following parameters:
Parameter
` Sampling Point
Sampling Frequency
Type of Sample
Flow
Influent or Effluent
Continuous
Recording
BODS (5 -day, 20°C)
Effluent
*2/Month
Composite
NH3 as N
Effluent
*2/Month
Composite
TSS
Effluent
*2/Month
Composite
Fecal Coliform
Effluent of first pond
*2/Month
Grab
Settleable Matter
Effluent
Daily
Grab
Residual Chlorine
Effluent
Daily
Grab
NO3
Effluent
**Triannually
Grab
TDS
Effluent
**Triannually
Grab
TOC
Effluent
**Triannually
Grab
Chloride
Effluent
**Triannually
Grab
The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard units
* 2/Month sampling frequency only during the months of April through October. During the
remainder of the year, these parameters shall be monitored monthly.
** Triannually sampling shall be conducted during March, July and November.
If Groundwater sampling indicates or predicts problems with compliance with of the Groundwater
Standards, this permit will be modified to include additional and/or more restrictive limitations.
3. Three (3) copies of all effluent monitoring data (as specified in condition III 2) on Form NDMR-1
shall be submitted on or before the last day of April, August and December. All information shall
be submitted to the following address:
NC Division of Water Quality
Water Quality Section
Non -Discharge Compliance/Enforcement Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
4. A record shall be maintained of all residuals removed from this facility. The record shall include
the name of the hauler, the permit authorizing the disposal or a letter from a municipality agreeing
to accept the residuals, the date the residuals were hauled, and the volume of residuals removed.
5. A maintenance log shall be maintained at this facility including, but not limited to, the following
items:
a. Daily sampling results including residual chlorine, settleable matter, and dissolved oxygen in
the aeration basin and at the clarifier weir;
b. Visual observations of the plant and plant site;
c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing,
diffuser inspections and cleanings, etc.);
d. Date of calibration of flow measurement device;
e. Date and results of power interruption testing on alternate power supply.
4

6. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number
[phone], 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 wastewater treatment facility which results in the treatment of
significant amounts of wastes 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;
b. Any process unit failure, due to known or unknown reasons, that renders the facility incapable
of adequate wastewater treatment, such as mechanical or electrical failures of pumps, aerators,
compressors, etc.;
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass of all
or any portion of the influent to such station or facility; or
d. Any time that self-monitoring information indicates that the facility is not in compliance with
its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter form
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.
IV. GROUNDWATER REQUIREMENTS
Within 90 days of permit issuance, three (3) monitor wells, designated as MW -4, MW -5 and MW -
6, shall be installed to monitor groundwater quality in the vicinity of the infiltration field. The
well(s) shall be constructed such that the water level in the well is never above or below the
screened (open) portion of the well at any time during the year. The general location and name for
each well is marked on Attachment A. Each monitoring well shall be located at the review
boundary, constructed in accordance with this permit, and approved by the Wilmington Regional
Office.
2. All wells that are constructed for purposes of groundwater monitoring shall be constructed in
accordance with 15A NCAC 2C .0108 (Standards of Construction for Wells Other than Water
Supply) and any other state and local laws and regulations pertaining to well construction.
3. The Wilmington Regional Office, telephone number [phone], shall be notified at least
forty-eight (48) hours prior to the construction of any monitoring well so that an inspection can be
made of the monitoring well location. Such notification to the regional groundwater supervisor
shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through
Friday, excluding state holidays.
4. Within thirty (30) days of completion of all well construction activities, a certification must be
received from a professional engineer certifying that the monitoring wells are located and
constructed in accordance with the Well Construction Standards (15A NCAC 2C) and this permit.
This certification should be submitted with copies of the Well Completion Form (GW -1) for each
well. Mail this certification and the associated GWA forms to the Department of Environment
and Natural Resources, Water Quality Division, Groundwater Section, Permits and Compliance
Unit, 1636 Mail Service Center, Raleigh, NC, 27699-1636.
5. For the initial sampling of the well as specified elsewhere in the permit, the permittee shall submit
a copy of the GW -1 Form (Well Completion Form) with the Compliance Monitoring Form (GW-

59) for that well. Compliance Monitoring Forms that do not include copies of the GW -I form will
be returned to the permittee without being processed. Failure to submit these forms as required by
this permit may result in the initiation of enforcement activities pursuant to NC General Statutes
143-215.6.
6. Within sixty (60) days of completion of all monitoring wells, the permittee shall submit two
original copies of a scaled topographic map (scale no greater than 1":100) signed and sealed by a
professional engineer or a state licensed land surveyor that indicates all of the following
information:
a. the location and identity of each monitoring well,
b. the location of the components of the waste disposal system,
c. the location of all property boundaries,
d. the latitude and longitude of the established horizontal control monument,
e. the relative elevation of the top of the well casing (which shall be known as the "measuring
point"). 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 top of
well casing should be accurate to the nearest 0.01 feet and should be tied to the existing
monitoring well at pond #5, and
f. the depth of water below the measuring point at the time the measuring point is established.
The survey shall be conducted using approved practices outlined in North Carolina General
Statutes Chapter 89C and the North Carolina Administrative Code Title 21, Chapter 56. The
surveyor shall establish a horizontal control monument on the property of the waste disposal
system and determine the latitude and longitude of this horizontal control monument to a
horizontal positional accuracy of +/- 10 feet. All other features listed in a. through e. above shall
be surveyed relative to this horizontal control monument. The positional accuracy of features
listed in a. through e. above shall have a ratio of precision not to exceed an error of closure of 1
foot per 10,000 feet of perimeter of the survey. Any features located by the radial method will be
located from a minimum of two points. Horizontal control monument shall be installed in such a
manner and made of such materials that the monument will not be destroyed due to activities that
may take place on the property. The map shall also be surveyed using the North American Datum
of 1983 coordinate system and shall indicate the datum on the map. All bearings or azimuths shall
be based on either the true or NAD 83 grid meridian. If a Global Positioning System (GPS) is
used to determine the latitude and longitude of the horizontal control monument, a GPS receiver
that has the capability to perform differential GPS shall be used and all data collected by the GPS
receiver will be differentially corrected.
The maps and any supporting documentation shall be sent to the Department of Environment and
Natural Resources, Water'Quality Division, Groundwater Section, Permits and Compliance Unit,
1636 Mail Service Center, Raleigh, NC, 27699-1636.
7. The new monitor wells MW -4, MW -5 and MW -6, and existing monitor wells MW -1, MW -2, and
MW -3 shall be sampled initially after construction and thereafter every March, July and
November for the following parameters:
Water Level pH
Chloride Total Dissolved Solids (TDS)
Fecal Coliforms Total Organic Compounds (TOC)
Nitrate (NO3) Total Ammonia
Total Phosphorous
Volatile Organic Compounds - In November only using one of the following methods:
(A) Standard Method 6230D, PQL at 0.5 ug/L or less
(B) Standard Method 6210D, PQL at 0.5 ug/L or less

(C) EPA Method 8021, Low Concentration, PQL at 0.5 ug/L or less
(D) EPA Method 8260, Low Concentration, PQL at 0.5 ug/L or less
(E) Another method with prior approval by the Groundwater Section Chief
Any method used must meet the following qualifications:
(1) A laboratory must be DWQ certified to run any method used.
(2) The method used must, at a minimum, include all the constituents listed in Table VIII of
Standard Method 6230D.
(3) The method used must provided a PQL at 0.5 ug/L or less which 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 at 0.5 ug/L must be
qualified (estimated) and reported.
If any volatile organic compounds are detected by the methods listed, then the Wilmington
Regional Office Groundwater Supervisor, telephone number [phone], must be contacted
immediately for further instructions regarding any additional follow-up analyses required. The
results of all initial and follow-up analyses must be submitted simultaneously.
9. The measurement of water levels must be made prior to sampling for the remaining parameters.
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 to provide the
relative elevation of the measuring point for each monitoring well. The top of the well casing
should be accurate to the nearest 0.01 feet and should be tied to the existing monitor wells at pond
#5.
10. The results of the sampling and analysis must be received on Form GW -59 (Groundwater Quality
Monitoring: Compliance Report Form) by the Department of Environment and Natural Resources,
Water Quality Division, Groundwater Section, Permits and Compliance Unit, 1636 Mail Service
Center, Raleigh, NC 27699-1636 on or before the last working day of the month following the
sampling month.
11. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is for the
disposal system constructed after December 31, 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 Groundwater Quality Standards at or beyond the Compliance
Boundary is subject to immediate remediation action in addition to the penalty provisions
applicable under General Statute 143-215.6A(a)(1).
In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the disposal
systems midway between the Compliance Boundary and the perimeter of the waste disposal area.
Any exceedance of standards at the Review Boundary shall require remediation action on the part
of the permittee.
12. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
V. INSPECTIONS
Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.

2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities to
prevent malfunctions and deterioration, operator errors and discharges which may cause or lead to
the release of wastes to the environment, a threat to human health, or a nuisance. The Permittee
shall maintain an inspection log or summary including at least the date and time of inspection,
observations made, and any maintenance, repairs, or corrective actions taken by the Permittee.
This log of inspections shall be maintained by the Permittee for a period of three years from the
date of the inspection and shall be made available to the Division or other permitting authority,
upon request.
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, may
inspect or copy any records that must be maintained under the terms and conditions of this permit,
and may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
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.
2. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
3. This permit is not transferable. In the event there is a desire for the facilities to change ownership,
or there is a name change of the Permittee, a formal permit request must be submitted to the
Division accompanied by an application fee, 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.
4. The subject wastewater treatment and disposal facilities shall be connected to an operational
publicly owned wastewater collection system within 180 days of its availability to the subject
facilities, if the subject wastewater treatment or disposal facilities are in noncompliance with the
terms and conditions of this non -discharge permit or the governing statutes or regulations. Prior to
the initiation of these connection activities, appropriate approval must be received from this
Division.
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 15A NCAC 2H .0205 (c)(4).
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.
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.
8. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
9. The Permittee, at least six (6) months prior to the expiration of this permit, 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.

Permit issued tZ° day of J�June, 2000
NORTHINA F,41RON)dENTAL MANAGEMENT COMMISSION
Z'-'
J -Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number wg0000193

C
Permit No. WQ0000193
June 9, 2000
ENGINEER'S CERTIFICATION
Partial Final
I, , as a duly registered Professional Engineer in the State of
North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project,
Project Name
Location and County
for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the construction such that the construction was observed to be built within substantial
compliance and intent of this permit, the approved plans and specifications, and other supporting materials.
Signature
Date
10
Registration No.

ATTACHMENT A
BALD HEAD ISLAND UTILITIES
INFILTRATION LAGOONS
BRUNSWICK COUNTY
PERMIT NO. WQ0000193
POND #
SUFA AVERAGE EAC.
WATER SU FACE
ELEV. FT.
POND 3
1.82
5.15
POND 3—A
0.22
5.75
POND 4
0.76
5.13
POND 5
0.55
4.96
TOTAL
3.35
CALCULATIONS FOR
INFILTRATION RATE
FLOW
INFILTRATION RATE
IN/HR
0.80, AVC. DAY, IACD
0.37
2.00, PEAK, AICD
0.92
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DEPARTMENT OF NATURAL AND ECONOMIC RESOURCES
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Classification of Biological Water Pollution Control Treatment Systems:
Grade I Biological WPCS
- Septic tank/sand filter systems
- Biological lagoon systems
- Constructed wetlands and associated appurtenances
Grade II Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a permitted flow
less than or equal to 0.5 million gallons per day (mgd)
Grade III Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a permitted flow
of greater than 0.5 through 2.5 million gallons per day (mgd)
- Grade II systems that are required to achieve biological nutrient reduction
Grade IV Biological WPCS
Systems that utilizing an activated sludge or fixed growth process with a permitted flow
of greater than 2.5 million gallons per day (mgd)
- Grade III systems that are required to achieve biological nutrient reduction
* Biological Nutrient Reduction -
The reduction of total nitrogen or total phosphorous by an activated sludge or fixed growth
process as required by the facilities permit.
Classification of Collection Water Pollution Control Systems:
(whichever provides lowest grade)
Same grade as biological water pollution control system. Grade of system:
Based on population served:
1.500. or Less = Grade I
.5- 1 to 15,000 = Grade II
I -5,-X! to 50,000 = Grade III
50,0(,'!L or more = Grade 57
i
Classification of Biological Water Pollution Control Treatment Systems:
Grade I Biological WPCS
- Septic tank/sand filter systems
- Biological lagoon systems
- Constructed wetlands and associated appurtenances
Grade II Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a permitted flow
less than or equal to 0.5 million gallons per day (mgd)
Grade III Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a permitted flow
of greater than 0.5 through 2.5 million gallons per day (mgd)
- Grade II systems that are required to achieve biological nutrient reduction
Grade IV Biological WPCS
Systems that utilizing an activated sludge or fixed growth process with a permitted flow
of greater than 2.5 million gallons per day (mgd)
- Grade III systems that are required to achieve biological nutrient reduction
* Biological Nutrient Reduction -
The reduction of total nitrogen or total phosphorous by an activated sludge or fixed growth
process as required by the facilities permit.
Classification of Collection Water Pollution Control Systems:
(whichever provides lowest grade)
Same grade as biological water pollution control system. Grade of system:
Based on population served:
1.500. or Less = Grade I
.5- 1 to 15,000 = Grade II
I -5,-X! to 50,000 = Grade III
50,0(,'!L or more = Grade 57

WATER POLLUTION CONTROL SYSTEM OPERATORS
CERTIFICATION COMMISSION
CLASSIFICATION
RATING SHEET FOR WATER POLLUTION CONTROL SYSTEMS
FACILITY INFORMATION:
NAME OF FACILITY: fi�47 /4,f --d fiSL19 N O U f -c L t T y
MAILING ADDRESS: ?0' JaX J�J 9, �Q��7'f-C 'I'. l r"
COUNTY:
AMIZ�16
u /-fib KCONTACT PERSON:TELEPHONE: (4V6) —73�-R
PERMIT NO: �(i li�(�0�93 Check One: NC WQ L--' HEALTH DP
ORC: 130 ec,)L I tit 6L TELEPHONE: e&D /Y 7
RATING INFORMATION: (Before completing this section, please refer to pages 2-4)
PERMITTED FLOW:di.2- MGD
CHECK CLASSIFICATION: WASTEWATER: 1
COLLECTION: 1
SPRAY IRRIGATION SUBSURFACE
BNR? YES NO
2 3 4
2 3 4
LAND APPLICATION
PHYSICAL/CHEMICAL GRADE I GRADE II
RATED BY: �d �J✓C �� REGION: 20 DATE:
REGIONAL OFFICE TELEPHONE NUMBER: (!I -IJ) 6 EXT:

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Classification of Spray Irrigation Water Pollution Control Systems:
Systems which utilize spray irrigation for the reuse or disposal of wasterwater.
These systems include: septic tanks, sand filter, oil/water 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 Physical/Chemical Water Pollution Control Treatment Systems:
Grade I Physical/Chemical: Any water pollution control system that utilizes a primarily
physical process to treat wastewater. This classification includes groundwater
remediation systems. **
Grade II Physical/Chemical: Any water pollution control system that utilizes a primarily
chemical process to treat wastewater. This classification includes reverse osmosis,
electrodialysis, and ultrafiltration systems. **
** Any water pollution control system that utilizes a phyicallchemical process to enhance an
activated sludge or fixed 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 18A.1961. ***
*** Any subsurface system that has as part of its treatment process a water pollution control
systems that may be classified under Rules .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. 90A-37.
Note: Please refer to G.S. 90A-37 for additional information and definitions.