WQ0003396_Final Permit_20000710

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
July 10, 2000
RALPH LASALLE, JR., GENERAL MANAGER
SIERRAPINE, LTD., MONCURE DIVISION
985 CORINTH ROAD
MONCURE, NC 27559
Dear Mr. LaSalle:
f
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Permit No. WQ0003396
SierraPine, Ltd.
Moncure Division
Wastewater Spray Irrigation
Chatham County
In accordance with your renewal request received March 6, 2000, we are forwarding herewith Permit No.
WQ0003396, dated July 10, 2000, to SierraPine, Ltd. for the continued operation of the subject wastewater treatment and
spray irrigation facilities. Please note Permit Condition HI.3 which requires the Permittee to install an appropriate flow
monitoring device.
This permit shall be effective from the date of issuance until June 30, 2005, shall void Permit No. WQ0003396
issued November 15, 1999, and shall be subject to the conditions and limitations as specified therein. 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.
If you need additional information concerning this matter, please contact
extension 524.
,/-Kerr T. Stevens
cc: Chatham County Health Department
Raleigh Regional Office, Water Quality Section
Raleigh Regional Office, Groundwater Section
Groundwater Section, Central Office
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit
E. Miguez at [phone]
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled110% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
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
SierraPine, Ltd.
Chatham County
continued operation of a spray irrigation treatment and disposal facility with a treatment volume of 200,000 GPD,
consisting of an 8.8 million gallon clay lined wastewater holding lake (pond #5); a grit settling pond (pond #4) which
will receive wastewater from pond #5, plant site wastewater, and wash down water; a grit settling pond (pond #1,
which will receive the Roberts-Boze clarifier backwash wastewater; a domestic wastewater package treatment plant
consisting of a bar screen, a 7,000 gallon aeration tank, a 1,167 gallon secondary clarifier, a 1,047 gallon sludge
holding tank, 36 CFM dual blowers, a 185 gallon chlorine contact tank equipped with tablet feed type chlorinator and
related appurtenances; an aerobic treatment pond (pond #2) which will receive the wastewater from pond #4, pond #1,
and treated effluent from the domestic treatment plant; a secondary settling pond (pond #3) which will receive all the
wastewater from pond #2; a 500 GPM pumping station to transport the wastewater from pond #3 to the spray irrigation
field; an 800 GPM pump station to recycle the wastewater from pond #3 back to production for use as Plant process or
wash down water and to transport wastewater to the storage pond when spray irrigation is not possible; a center pivot
irrigation system consisting of sprinkler nozzles averaging 11.5 GPM divided into ten (10) 5.58 acre spray zones
totaling 55.8 acres on a 100 acre company owned site; and all associated piping, valves, controls, pumps, later level
sensors, aeration units and other appurtenances to serve SierraPine, Ltd.'s Moncure Facility with no discharge of
wastes to the surface waters, pursuant to the renewal request received March 6, 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 June 30, 2005, shall void Permit No. WQ0003396
issued November 15, 1999, and shall be subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
The 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 ground waters which will render them
unsatisfactory for normal use. In the event that the facilities fail to perform satisfactorily, including the
creation of nuisance conditions or failure of the irrigation area to adequately assimilate the wastewater, the
Perznittee 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 or
groundwaters resulting from the operation of this facility.
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.
4. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
5. The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under separate
ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells, and
g) 50 feet between wastewater treatment units and property lines.
Some of the buffers specified above may not have been included in previous permits for this waste
treatment and disposal system. These buffers are not intended to prohibit or prevent modifications, which
are required by the Division, to improve performance of the existing treatment facility. These buffers do,
however, apply to modifications of the treatment and disposal facilities which are for the purpose of
increasing the flow that is tributary to the facility. These buffers do apply to any expansion or
modification of the spray irrigation areas and apply in instances in which the sale of property would cause
any of the buffers now complied with, for the treatment and disposal facilities, to be violated. The
applicant is advised that any modifications to the existing facilities will require a permit modification.
II. OPERATION AND MAINTENANCE REQUIREMENTS
The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility 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 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, III, 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.
3. A suitable year round vegetative cover shall be maintained.
4. Irrigation shall not be performed during inclement weather or when the ground is in a condition that will
cause runoff.
5. Adequate treasures shall be taken to prevent wastewater runoff from the spray field.
G. 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.

7. For spray zones 1, 2, 3, 6, 7, 8, 9, and 10 the application rate shall not exceed a cumulative loading of 52
inches over any twelve (12) month period at an instantaneous application rate not to exceed 0.6 inches per
hour for spray zones 2, 3, 7, 8, 9, and 10. The instantaneous rate of application for spray zones I and
shall not exceed 0.35 inched per hour.
For spray zones 4 and 5, the application rate shall not exceed a cumulative loading of 12.74 inches over
any twelve (12) month period at an instantaneous application rate not to exceed 0.2 inches per hour.
8. No type of wastewater other than that from SierraPine, Ltd.'s Moncure Facility shall be sprayed onto the
irrigation area.
No traffic or equipment shall be allowed on the disposal area except while installation occurs or while
normal maintenance is being performed.
10. Public access to the land application sites shall be controlled during active site use. Such controls may
include the posting of signs showing the activities being conducted at each site.
11. Freeboard in the five (5) ponds (four treatment ponds and one holding pond) shall not be less than one foot
at any time_
III. MONITORING AND REPORTING REQUIREMENTS
Any monitoring (including groundwater, surface water, soil or plant tissue analyses) 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. Adequate records shall be maintained by the Permittee tracking the amount of wastewater disposed. The,,
records shall include, but are not necessarily limited to, the following information:
a. date of irrigation,
b_ volume of wastewater irrigated,
c. field irrigated,
d. length of time field is irrigated,
e. continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each field,
f. weather conditions, and
g. maintenance of cover crops.
3. Influent flow shall be continuously monitored and daily flow values shall be reported on Form NDMR.
The Permittee shall install an appropriate flow measurement device consistent with approved engineering
and scientific practices to ensure the accuracy and reliability of influent flow measurement. Flow
measurement devices selected shall be capable of measuring flows with a maximum deviation of less than
10 percent from true flow, accurately calibrated at a minimum of once per year, and maintained to ensure
that the accuracy of the measurements is consistent with the accepted capability of that type of device.
Records of flow measurement device calibration shall be kept on file by the Permittee for a period of at
least three years. At a minimum, data to be included in this documentation shall be:
a. Date of flow measurement device calibration
b. Name of person performing calibration
c. Percent from true flow
Plans and specifications for the flow measuring device shall be prepared by a licensed Professionaj
Engineer and submitted to the appropriate regional office 30 days prior to installation. The flow
measuring device shall be installed within 1 year of the date of this permit.
3

4. The effluent from the subject facilities shall be monitored by the Permittee at the point prior to irrigation
every March, July, and November for the following parameters:
BOD5
Fecal Coliform
NH3 as N
TSS
pH
Formaldehyde
5. Three (3) copies of all operation and disposal records (as specified in condition III 2) on Form NDAR-1
shall be submitted on or before the last day of the following month. Three (3) copies of all effluent
monitoring data (as specified in condition III 3) on Form NDMR-I shall be submitted on or before the last
day of April, August & December. All information shall be submitted to the following address:
NC Division of Water Quality
Water Quality Section
Non -Discharge CompIiance/Enforcement Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
6. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh 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 sludge digester; 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 render 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 directly to
receiving waters without treatment of all or any portion of the influent to such station or facility.
d. Any time that self -monitoring information indicates that the facility has gone out of 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
1. Existing monitor wells SMW-3, SMW-4, SMW-5, SMW-8, SMW-9 and SMW-18 shall be sampled every
March, July and November for the following parameters:
NO3
TDS
pH
Chloride
Formaldehyde - In November Only
Ammonia Nitrogen
TOC
Water Level
Orthophosphate
4

Volatile Organic Compounds - In November only by one of the methods below:
(A) Standard Method 6230D, PQL at 0.5 ugfL 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 Iess
(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/1_, must be qualified
(estimated) and reported.
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.
If TOC concentrations greater than 10 mg/1 are detected in any downgradient monitoring well, additional
sampling and analysis must be conducted to identify the individual constituents comprising this TOC
concentration. If the TOC concentration as measured in the background monitor well exceeds 10 mg/l,
this concentration will be taken to represent the naturally occurring TOC concentration. Any exceedancec
of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional
sampling and analysis as described above.
If any volatile organic compounds are detected by Method 6230D, then the Raleigh Regional Office
Groundwater Supervisor, telephone number (919) 5714700, 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.
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,
Division of Water Quality, Groundwater Section, Permits and Compliance Unit, 1636 Mail Service
Center, Raleigh, N.C. 27699-1636 on or before the last working day of the month following the sampling
month.
2. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided.
3. 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
rernediation 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.

V. INSPECTIONS
1. 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 keep 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 upon request to the Division or other permitting authority.
3. 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 trust 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.
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. 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.
6. A set of approved plans and specifications for the subject project must be retained by the Permittee for the
life of the project.
7. The annual administering and compliance fee trust 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 211.0205 (c)(4).
8. 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 this the tenth day of July, 2000
NORTH 110LINA EN I NTAL MANAGEMENT COMMISSION
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0003396

Permit No. WQ0003396
July 10, 2000
ENGINEER'S CERTIFICATION
Partial Final
1, , 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
Registration No.

mi
V SOl l �
M1
O/

r❑
Reference:
U.S. Geological Survey
Moncure Quadrangle
North Carolina
7.5 ]Minute Series (Topographic)
National Geodetic Vertical Datum
Photorevised 1961
Weyerhaeuser Company
1Noncure, North Carolina
SCALE
Z
2000
4000 FEET
+ Cr.XL
o •
1,'
Woodward —Clyde Consults FIGURE 1
consWtrn4 fn9inowv. c.ao SIERRAPINE LIMITED - MONCURE FACILITY
and n`
Rvdelgh.Nofand a SPRAY IRRIGATION PERMIT
CHATHAM COUNTY
SCALE °R"'""'' BY- °S" W�1000339G/GWOOOS7
As Showr3 piKD. 13Y. DSM •1
SITE LOCATION MAP

2
--
k
rl
SAe}w�-16 ` •i �
k L k —
ZONE 5
Ir, NON00RNC WFIL MfH
IYAr. LEM ELE,CCA IN � VS,L
SitWr-Si• 1ffi
Al •,•• I!e — WEER TABLE CON70M
MW- 17, 87.370 CONTOUR IWERVAL - 7 FEET
LOG00N OF S RhC 5 A°PUXUA L
zow 5 k
k
l lee
— ! 71.4o
SM -l4 I .ia
162.07
ONE
I+ k
SMw-7 m ' Suw�9,�
r —
T ZCH ' , f S •� 1 !
T ^m 1
Al
slaw-7A I ,7A Suw=B i
I0 E 2 SMW-7
SMw—. f suw-6
SMw-1 177.960 • r/ '♦ {
\h. IE5.630 X r
174.980 6W2
166.420
_ F k
Al
• ll.fw-E
pP - • I I T
O
E
168.740 - T66.390 Luw-5
k _ P _ {
e3.,30 k t
a 300 Boa
n° k
FEET
`► — L Mw 4 x _
• O 166.000
FIGURE 2
TITHE: SIERRAPINE LIMITED - MONCURE FACILITY
GROUND WATER CONTOUR MAP (C SPRAY IRRIGATION PERMIT
���ta WEYERHAEUSER CHATHAM COUNTY
Environmental Consultants, tnc, W 0003396/GW00057
Cherlotte, North COmMa MONCURE, NORTH CAROLENA 1
SITE DETAIL MAP !J

WATER POLLUTION CONTROL SYSTEM OPERATORS
CERTIFICATION COMMISSION
CLASSIFICATION
RATING SHEET FOR WATER POLLUTION CONTROL SYSTEMS
FACILITY INFORMATION:
NAME OF FACILITY:
MAILING ADDRESS: { con V\'
COUNTY: C ` cx4w\ VVN
q
CONTACT PERSON: I aJaL LL 5k& TELEPHONE: {Ct d _) Z "" 2 12
PERMIT NO: L30 OLD3 3 rl i:� Check One: NC WQ ✓ HEALTH DP
ORC: TELEPHONE: (Z�Z(Z�:rfZl��
RATING INFORMATION: (Before completing this section, please refer to pages 2-4)
PERMITTED FLOW: 0, -2-CC' MGD
CHECK CLASSIFICATION: WASTEWATER: 1
COLLECTION: I
SPRAY IRRIGATION SUBSURFACE
BNR? YES NO
2 ✓ 3 4
2 3 4
LAND APPLICATION
PHYSICAUCHEMICAL GRADE I GRADE 11
' r�" P--t,-1f,'LDATE:RATEDBY: 1G�.v`��5�v_�� REGION:
REGIONAL OFFICE TELEPHONE NUMBER: 6 /1 S" D EXT: z3l-

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 11 Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a permitted flow
Cp
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
1,501 to 15,000 = Grade II
15,001 to 50,000 = Grade III
50,001 or more = Grade IV

Classification of Spray Irrigation Water Pollution Control Systems:
✓ Systems which utilize spray irrigation for the reuse or disposal of waster -water.
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
v
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 phyicaUchemical 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 - shalI 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 Cssolved 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 sernipermable
membranes to separate and treat wastewater.
Ultrafidtration 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.