WQ0013502_Final Permit_19971124

State of North Carolina -
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Don Willhoit, General Partner
Chapel Hill West
203 Lexington Drive
Chapel Hill, NC 27516
Dear Mr. Willhoit:
ASCANNED
�~ DATE:
aCrl1V1-1
November 24, 1997
Subject: Permit No. WQ0013502
Chapel Hill West -Tower Apartments
Wastewater Treatment and Disposal
Chatham County
In accordance with your application received February 26, 1997, we are forwarding herewith
Permit No. WQ0013502, dated November 24, 1997, to Chapel Hill West for the construction and
operation of the subject wastewater treatment and disposal facilities. Please note several conditions in the
permit requiring action. They include the installation of a two strand barb wire around the wetland and
infiltration basin areas, the installation of two groundwater monitoring wells, and for the chlorinator to
remain in the treatment train. Also please note condition 1.10 which requires Chapel Hill West to keep the
NPDES discharge permit (NC0051331) for this facility for one year after completion of construction of the
facility. If after one year the wetland system is working appropriately then Chapel Hill West may request
rescission of their NPDES permit. During this year time both permits will be required to be kept in
compliance with the conditions of the permits and will remain as such until Chapel Hill West requests
rescission of one of the permits.
This permit shall be effective from the date of issuance until September 30, 2002 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, P.O. Drawer
27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Teiephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Mr. Randy Kepler at [phone] extension 544.
Sincere, %
_/A. Preston Howard, Jr., P.E.
cc: Chatham County Health Department
Paul A. Colbert, P.E.
Raleigh Regional Office, Water Quality Section
Raleigh 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, HEALTH AND NATURAL RESOURCES
RALEIGH
INFILTRATION BASIN 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
Chapel Hill West
Chatham County
FOR THE
construction and operation of a 1,080 GPD wastewater treatment and disposal facility consisting of two,
1,200 gallon septic tanks, an intermittent sand filter, chlorine dosing chamber and a chlorine contact tank/
pump tank with inside dimensions of 10.5 feet by 5 feet, duplex 13 GPM pumps with high water alarms,
a 30 foot by 94 foot constructed wetlands with a 45 mil EDPM liner, a flow splitter box for even
distribution over the infiltration fields, 4 infiltration fields each being 6 feet by 175 feet for a total area of
4,200 square feet, to serve 8 apartments at Tower Apartments, with no discharge of wastes to the surface
waters, pursuant to the application received February 26, 1997, and in conformity with the project plan,
specifications, and other supporting data subsequently filed and approved by the Department of
Environment, Health and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until September 30, 2002 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. Mail the Certification to the Non -Discharge
Permitting Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
2. The Raleigh Regional Office, telephone number 919-571-4700, shall be notified at least
forty-eight (48) hours in advance of operation of the installed facilities so that an in -place
inspection can be made. Such notification to the regional 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.
3. The wastewater treatment and disposal 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 infiltration area to adequately assimilate the wastewater, 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.

4. 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.
5. 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. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
7. 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 drain ageways or surface water bodies,
C) 50 feet between wetted area and public right of ways,
100 feet between wastewater treatment units and wells, and
g) 50 feet between wastewater treatment units and property lines.
8. Chapel Hill West shall install, at a minimum, a two strand barb wire fence around the
wetland system and the infiltration basins to prevent any unauthorized access.
9. Chapel Hill West shall keep the NPDES discharge permit (NC0051331) for this facility
effective for one year after completion of construction of this non -discharge facility. If
after one year's worth of data the wetland system is working adequately then Chapel Hill
West may request rescission of their NPDES permit. Until that time the NPDES permit
must remain in effect.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. 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. Once the facility is classified, the Permittee must
submit a letter to the WPCSOCC which designates the operator in responsible charge
within thirty days after the wastewater treatment facilities are 50% complete.
3. A suitable vegetative cover in the wetlands shall be maintained.
4. 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.
5. The application rate shall not exceed a cumulative loading of 14.8 inches over any twelve
(12) month period (33,480 gallons per year).
6. No type of wastewater other than that from Tower Apartments shall be discharged into the
infiltration areas.
2

7. No traffic or equipment shall be allowed on the disposal area except while construction
occurs. Any vegetation removal required in either the wetland system or the infiltration
basins shall be completed by hand.
8. Public access to the treatment and disposal areas shall be controlled during active site use.
Such controls may include two strand barb wire or other similar means.
9. Freeboard in the wetland system and infiltration basins shall not be less than two feet at any
time.
MONITORING AND REPORTING REQUIREMENTS
1. 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. These records shall include, but are not necessarily limited to, the following
information:
a. date of loading,
b. volume of wastewater loaded,
c. basin of loading,
d . length of time basin was loaded,
e. continuous weekly, monthly, and year-to-date hydraulic (inches/acre or gallons)
loadings for each basin,
f. weather conditions, and
g. maintenance on each basin.
3. The effluent from the subject facilities shall be monitored by the Permittee at the point after
the wetland system and prior to the infiltration basins every March, July and November for
the following parameters_
Total Dissolved Solids (TDS) Total Phosphorus
Total Organic Carbon (TOC) Fecal Coliform
Nitrate (NO3) Total Ammonia
Chloride
4. 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 1113) 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
Post Office Box 29535
Raleigh, North Carolina 27626-0535
5. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional Office, telephone number
919-571-4700, 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 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
directly to receiving waters without treatment 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 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.
I V . GROUNDWATER REQUIREMENTS
1. Prior to beginning waste disposal operations, one upgradient monitor well designated as
MWA and one downgradient monitor well designated as MW-2 shall be installed to
monitor groundwater quality. The wells 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 Raleigh 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 Raleigh Regional Office, telephone number 919-571-4700, 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 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 GW-1 forms to the Perrnits
and Compliance Unit, Groundwater Section, P.O. Box 29578, Raleigh, NC, 27626-0578.
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-1 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.
4

6. Within sixty days of permit issuance, the permittee shall submit two original copies of a
scaled topographic map (scale no greater than I":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 waste disposal system,
c. the location of all property boundaries,
d. the latitude and longitude of the established horizontal control monument,
c. the relative elevation of the top of the well casing (which shall be known as the
"measuring point"), 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 tape 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 GIobal 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 Groundwater Section,
N.C. Division of Water Quality P.O. Box 29578 Raleigh, N.C. 27626-0578.
7. The new monitor wells MW-1 and MW-2 shall be sampled initially after construction (and
prior to waste disposal operations) 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 Method 6230D (Capillary -
Column), "Standard Methods For the Examination of Water and
Wastewater", 17th ed., 1989
If any volatile organic compounds are detected by Method 6230D, then the Raleigh
Regional Office Groundwater Supervisor, telephone number 919-571-4700, 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 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 exceedances of this naturally occurring
TOC concentration in the downgradient wells shall be subject to the additional sampling
and analysis as described above.
The results of the sampling and analysis must be received on Form GW-59 (Groundwater
Quality Monitoring: Compliance Report Form) by the Groundwater Section, Permits and
Compliance Unit, P.O. Box 29578 Raleigh, N.C. 27626-0578 on or before the last
working day of the month following the sampling month.
The results of the sampling and analysis of the monitoring requirements listed in Condition
III.3 of this permit must also be received by the Groundwater Section, Permits and
Compliance Unit, P.O. Box 29578 Raleigh, N.C. 27626-0578 on or before the last
working day of the month following the sampling month.
8. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
9. 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.
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 Perrittee 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 must be maintained
under the terms and conditions of this permit, and may obtain samples of groundwater,
surface water, or leachate.

VI. GENERAL CONDITIONS
1. 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. 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.
5. 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 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).
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 Twenty Fourth day of November, 1997
NOZHC�OLINA ZVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0013502

Permit No. WQ0013502
November 24, 1997
ENGINEER'S CERTIFICATION
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, , for the
Project Name Location
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.

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RATING SCALE- FOR CLASSIFiCATiON OF WATER POLLUT4ON CONTROL SYSTEMS
Name of Facility: , ow, 4
Owner or Contact Person: 16,W'
Mailing -Address: L ;,,41, :1 ;ov
County: �', ,�v' Telephone:
Present Classifjoation: New Facility✓ Existing Facility
NPDES -Pere No. NC00 Nondisc. Per. No.WQooJ3S�z Health Dept.Per No,
Rated by: y `�rLe,S Telephone: �5-7/— �]oo _ Date:�7
Reviewed by: Health Dept. Telephone:
Regional Office Telephone.
- Central Office Telephone:
ORC: Grade: Telephone:
Check Classification(s): Subsurface --je Spray Irrigation Land Application
• --Wastewater Classification: (Circle One) I it lit IV Total Points.
F1 t -F PiJ F SA G�...!AI I TA.F
G1"NSIDEREDWAS- rtz TREAT_R TF�PURPCS�CfClASSIF:K TK1 N-ALSQV FT1CTAW SYSTt,ISCCNSiSiLYjCMYC=-SEEM TAW
AND GRAVITY NFRIFi-KE FT FROM CLASSIFKC-ATiCN-
SLSSURFACe C�SkFCATfCt f -r ------ tFK'A-n--N
-- ors-- _------_-------
(checic all units Thal anpfy) (check alt units [hat apply)
1. septic tanks 1. preliminary treatment (definition no. 32 )
2
pump tans 2—lagoons � // 1_
3. siphon or pump -dosing systems 3-�]Cseplic tanks 12, x Go 7T'[.t i�ci
4- sand filters 4-pump lankcs
grease lrsp(nterceplor " 5. ✓ pumps (� l
oillwatec separators 6. ✓~sand fillers f3._Z—
�1U,�1";,rri�
-''7. gravity subsurface Irealmenl and disposal.. 7. grease Irap/inlerceplor
B.—Pressure subsurface lrealment and disposal: B- -oillwater separators
9. -disinfection
,
_........ - - 10. chemical addition for nutrientlalgae control
1 i_ spray irrigation' of wastewater
In addition to the above classifications, pretreatment of wastewater in excess of these components .shai•-
be rated using the -point rating.-,systerrs and will require art operator with an appropriate dual certification..
LAND. APPLICATIO I/RESIDUALS CLASS IFFCATION (AppGes`only to permit holder)
1- Land application of biosalids, residuals or contaminated soils on a designaled site..
_ --_------� _-----------_.--- --_--------------------------------
.WASTEWAT-tRTRFATNiB,lT ACILf1YCLAS•SIFr-AT]CN
The follovring systems shall be assigned a Class I classification, unless the- flow is of a significant quaniily or the technology is unusually
complex, to require consideration by the Commission on a case-bytase basis: (Check it Appropriate)
1. Oillwaler Separator systems consisting only of physical separation, pumps and disposal;
..2 Seplic Tank/Sand Filter Systems consisting only of septic tanks. dosing a=paratus, pumps,sand tillers, disin:ection
and direct discharge;
3- Lagonn Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4- Closed -loop Recycle Systems;
5 Groundwaler Remediatian Systems consisting only of oillwater separators, purnps, air -stripping, carbon adsorption, disinfection
and dispo ad;
6- Aquacullure operations with discharge to surface waters;
7• Water Plant sludge -handling and backwash water lrealment;
_Seaird processing consisting of screening and disposal.
Single-famiiy discharging systems, wish the exception of Aerobic Treatment Units, V141 be CJ2ssified it per-iiltem� al!er Jvly 1,
1993 or if upon inspection by the Division, it is 'ound that the system is not being adequately opereted or mainlz3ned. Such
systems Y41 be notified of the c.as--ification or reciassilicalion by 1ho Commission, in writing.
1*