WQ0006941_Final Permit_19930226

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James B. Hunt, Jr., Governor
February 26, 1993
Mr. C. L. McGee, Superintendent
Caswell County Schools
PO Box 160
Yanceyville, NC 27379
Jonathan B. Howes, Secretary
Subject: Permit No. WQD006941
Caswell County Schools
Stoney Creek Elementary School
Wastewater Spray Irrigation
Caswell County
Dear Mr. McGee;
In accordance with your application received September 1, 1992, we are forwarding herewith
Permit No. WQ0006941, dated February 26, 1993, to Caswell County Schools for the construction and
operation of the subject spray irrigation facilities.
This permit shall be effective from the date of issuance until January 31, 1998, 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 to you, you have
the right to request an adjudicatory hearing upon written request within 30 days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of 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.
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
7041251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Ms. Angela Y. Griffin at 919/ 733-5083.
Sincerely,
A. Preston Ho , P .,
Acting Director
Caswell County Health Department
Winston-Salem Regional Office, Water Quality
Winston-Salem Regional Office, Groundwater
Groundwater Section, Jack Floyd
Training and Certification Unit
Dewberry & Davis
Facilities Assessment Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF E?` VIRONMI NT, HEALTH 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
Caswell County Schools
Caswell County
FOR THE
construction and operation of a 3,500 GPD spray irrigation facility consisting of an existing 11,000 gallon
capacity septic tank, a 413,610 gallon lagoon with two compartments, one for 30 days of treatment and the
other for storage, a chlorinator, and all other pumps, valves and appurtenances necessary for spray
izrigatation to approximately 3.12 acres to serve Stoney Creek Elementary School with no discharge of
wastes to the surface waters, pursuant to the application received September 1, 1992, 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 January 31, 1998, 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 pem-fitted
facility has been installed in accordance with this permit, the approved plans and
specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.
2. The Winston-Salem Regional Office, phone no. 919/896-7007 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 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 faihjn� of the
irrig,a6m area to adequately absorb the wastewater, the Permitt,-,e shall take such inirnediate
correct:vT action to correct the problem, including actions as may be required by the
Division of Environmental Management.
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 sludge generated from these treatment facilities must be disposed of in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management.
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 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,
g) 50 feet between wastewater treatment units and property lines.
8. A leakage test shall be performed on the septic tank and dosing tank to insure that any
exfiltration occurs at a rate which does not exceed twenty (20) gallons per twenty-four (24)
hours per 1,000 gallons of tank capacity. The engineer's certification will serve as proof of
compliance with this condition.
1 u 3.3a TIMa
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, 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 Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 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 Title 15A, Chapter 8A, .0202. Once
the facility is classified, the Permittee must submit a letter to the Certification Commission
which designates the operator in responsible charge within thirty days after the wastewater
treatment facilities are 50% complete.
3. A suitable 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.
2

5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. The facilities shall be effectively maintained and operated as'a non -discharge systern to
pmvera the disc"ha ge of any v;rastewaFer resulting from the operation of this faci=ity.
7. The average annual weekly application rate shall not exceed 0.36 inches per week at an
instantaneous application rate not to exceed 0.3 inches per hour.
8. No type of wastewater other than that from Stoney Creek Elementary School shall be
sprayed onto the irrigation area.
9. 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.
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses)
deemed necessary by the Division of Environmental Management 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 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. The effluent from the subject facilities shall be monitored by the Permittee at the point prior
to irrigation every May, September, and January for the following parameters:
BODS TSS
Fecal Colifo= pH
NH3 as N
4. Three copies of all operation and disposal records (as specified in condition 1112) and all
effluent monitoring data (as specified in condition 111 3) and any other data as may be
required shall be submitted on or before the last day of the following month to the
following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 2762E-0535
3

5. Noncompliance Notification:
c Permittee shall report by telephone to the Wirs.ton-Salem Reegional Ci'fice, telephone
no. 919/896-7007, as soon as possibly, but in no case more :�_an 24 hours or on die next
wonting 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.
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 15 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.
1. The Compliange Boundary,for the disposal system is specified by regulations in 15A
NCAC 2L, Classifications and Water Quality Standards applicable to the groundwater of
North Carolina. An exceedance of Groundwater Quality Standards beyond the Compliance
Boundary is subject to penalty provisions applicable under General Statute 143-215.6A.
The sale of property, by the Permittee, which is within or contiguous to the disposal
system site may alter location of the Compliance Boundary.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the lagoon and spray field, or 50 feet within the
property boundary.
If the title to any property which may affect the location of the Compliance Boundary is
changed, the permittee shall notify the Division Director within 14 days. The Director shall
then establish a modified Compliance Boundary which will be done as a modification to the
Permit.
4

The REVIEW 13QIINDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classifications and Standards. A REVIEW BOUNDARY is
established around disposal systems midway between the Compliance Boundary and the
perimeter of the waste disposal area. When the concentration of any substance equals or
e:;.(:ecds the maximum allowable conecntra.tion of that su.bstakce at the
ETAR"Y, as determined by monitoring, the permittee small either (i) demonstrate,
through predictive calculations or modeling, that natural site conditions, facility design and
operational controls will prevent a violation of standards at the Compliance Boundary; or,
(ii) submit a plan for the alteration of existing site conditions, facility design or operational
controls that will prevent a violation of standards at the Compliance Boundary, and
implement that plan upon its approval by the Director.
2. The interior surfaces of the lagoon shall be completely lined with a 36-mil thick plastic
liner. Following installation and inspection of the lagoon liner, and prior to waste disposal
operations, certification of the liner's compliance with approved construction specifications
and the liner's integrity must be provided to the Division of Environmental Management,
Groundwater Section, by the project engineer.
3. Any groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
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 Pemuttee for a period
of three years from the date of the inspection and shall be made available upon request to
the Division of Environmental Management or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division of Environmental
Management may, upon presentation of credentials, enter and inspect any property,
premises or place on or related to the disposal site and facility at any reasonable time for the
purpose of determining compliance with this permit; may inspect or copy any records that
must be kept under the terms and conditions of this permit; or may obtain samples of
groundwater, surface water, or leachate.
VI. (IENERAL CONDITIONS
1. This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans, 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 of Environmental Management accompanied by an application
fee, documentation from the parties involved, and other supporting materials as may be
appropniate. The approval of this request will be consiocred or. ins, 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 of Environmental Management 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 (Iocal, 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
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 26th day of February, 1993
CAROLINA ENVIRONMENTAL MANAGEMENT COYMSSION
A."Preston Howard r., P.E., A ng}Director
Division of Environm M m nt
By Authority of the Environmentmanagement Commission
ermit Number WQ0006941

RATING SCALE -FOR CLASSIFICATION OF FACILITIES
Name of Plant: _<'- `t" ,
Owner or Contact Person: ' C 2- 121 t G-e_
Mailing Address:T /0, Zs,Z /� 7
e!ephone:
NPDES Permit No.(iNCoo Nondisc. Per. No. 6J Q 0 d 0 '
IssueDate: Expiration Date:
Existing Facility f New Facility
Rated By:_ Date:�—
Reviewed (Train. & Cert.) Reg. Office �i�� ��� ���%•-�
Reviewed (Train. & Cert.) Central Office
ORC C j-,r10Grade T _
Plant Class: (circle one) V/
ITEM POINTS
(1) Industrial Pretreatment Units and/or
Industrial Pretreatment Program
(see definition No. 33)
4
(2) QCSIGN FLOW OF PLANT IN GPD
(not applicable to non -con laminated coaling waters, sludge
handling facilities for water purification plants, totally
closed cycle systems (det. No. 11), and facilities
consisting only of Item (4) (d) or Items (4) (d) and (11) (d}]
0 2D,000 .................... 1 )
20,001 — 50,000..........................
2
50,001 -- 100,000..........................
3
100,001 - 250,000..........................
4
250,001 — 500,000..........................
5
500,001--1,000,000................. I.I......
8
1,000,001 -- 2,000,000 ........................
10
2,000,001 (and up) - rate 1 point additional for each
200,000 god capacity up to a
maxima 30
Design Flow (gpd)
(3) PRELtMINAIN( UNITS (see definition no. 32)
(a) Bar Scr s ................................
'
1
or
(b) 1�499hanical Screens, Static Screens or
Corkninuting Devices ........... .............
2
(c) GpMemoval ...............................
1
'or
(d) Mechanical or Aerated Grit Removal ...........
2
(e) Flow Measuring Device .......... 4 ............
1
or
(f} Instrumented Flow Measurement ..............
2
(9) Preaeration................................
2
(h) influent Row -Equalization ...................
2
(i) Grease or Oil Separators - Gravity ..........
2
Mechanical..........
3
Dissolved Air Flotation.
8
(!) Prechlorination ..............................
5
(4) PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) ..............
(b) Imhoff Tank .................................. 5
(c) Primary Clarifiers ............................ 5
(d) Settling Ponds or Settling Tanks for Inorganic
Non -toxic Materials {sludge handling facilities
for water purification plants, sand, gravel,
stone, and other mining operations except
recreational activities such as gem or gold
mining} ..................................... 2
III IV Total Points —,I,
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeration - High Purity Oxygen System .....
Diffused Air System ...........
Mechanical Air System (fixed.
floating or rotor) ..............
Separate Sludge Reaeration .... .
(H) Trickling Filler
Nigh Rate ...................
Standard Rate .............. .
Packed Tower ...............
(iii) Biological Aerated Filler or Aerated
Biological Filter ......................
(iv) Aerated Lagoons ..................... .
(v) Rotating Biological Contactors ........ .
(vi) Sand Fillers -
intermittent biological .... .
recirculating biological .. .
(vii) Stabilization Lagoons .............
(viii)Ciartfier ..............................
(ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see def. No. 12) (Points for this item
have to be in addition to items (5) (a)
(i) through (5) (a) (vnr) ........ ........
(x) Nutrient additions to enhance BOO
removal ...............................
(xi) Biological Culture ('Super Bugs') addition
to enhance organic compound removal .... .
(b) Ni1r60en0U5 Stage
(i) Aeration - high Purity Oxygen System .... .
Diffused Air System ...........
Mechanical Air System (fixed,
floating, or rotor) ...... ......
Separate Sludge Reaera5on .....
(5) Trickling Filter -
High Rate ..............
Standard Rate ........... ,
Packed Tower............
(iii) Biological Aerated Filter or Aerated
Biological Filler .........................
(iv) Rotaling Biological Contactors ............
(v) Sand Filler -
intermittent biological ....... .
recirculating biological ....... .
(vi) Clarifier ...............................
20
10
a
3
7
5
5
10
10
10
R
5
20
10
7
5
5
10
10

(6) TERTIARY OR ADVANCED TREATMENT UNIT
(10) -CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
{ a) Activated Carbons Beds -
(not applicable to chemical additions rated as item
without carbon regeneration .................. 5
(3) G)(5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e).
with carbon regeneration .................... is
9 a , 4 b , or 9 c 5 infs each: List:
O O O O O (} points
(b) Powdered or Granular Activated Carbon Feed -
5
without carbcn reg•_neratio7! ................. 5
with carbon reg,ane;abor ................... 1 5
5
!c) Ai, Siri 7pirtic .. .. _ . _ ..... _ ................ 5
5
(d) Denification Process (separate process) . , ... 1 0 tri
(e) 1=fectrodialysis ............................. . 5
(11) MISCELLANEOUS UNITS
(f) Foam Separation . . . ..................... 5
(a) Holding Ponds, Holding Tanks or Sellling Ponds
(g) Ion Exchange ................................ 5
for Organic or Toxic Materials including wastes
(h) Land Application of Treated Elfluenl
from mining operations containing nitrogen and/or
(see definition no. 22b) (not applicable for
phosphorous compounds in amounts significantly
sand, gravel, stone and other similar mining
greater than is common for domestic wastewater ..........`:J
operations)
(b) Effluent Flow Equalization (not applicable to storage
(i) on agricullurally managed sites (See del,
basins which are inherent in land application systems).
2
No.4)................................... 10
(c) Stage Discharge (not applicable to storage basins
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
inherent in land application systems .....................................:: 3
(d) Pumps ._.-.-_______
and similar fixed nozzle systems) ...........
(e) Stand -fay Power Supply.___.__...._-........_.
(iii) by subsurface disposal (includes low pressure
_...._....... _. .........
(f) Thermal Pollution Control Device._ .....................................
3
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) ............................. 4
TOTAL POINTS ..•
(i} Micro=eens .............. ........ . .......... 5
{j) Phosphorus Removal by Biological Processes
CLASSIFICATION
(See def. No. 26) ............................ 20
(k) Polishing Ponds - without aeration ....... 2
Class I ............... ......._.__ _.... 5 - 25 Points
with aeration .......... 5
Class 11... ...»_. _ __ 26- 50 Points
(1) Post Aeration - cascade ............:. 0
Class III ................................. .._. __ _.... 51- 65 Points
diffused or mechanical ... 5
Class IV ........... ............. _..._ _ _._._ 66- Up Points
(m) Reverse Osmosis ........................ . . ..... 5
(n) Sand or Mixed -Media Fillers - low rate ........... 2
Facilities having a rating of one through four points, inclusive,
high rate .. _ ..... _ . 5
do not require a certified operator. Classification of all other
(o) Treatment processes for removal of metal or
facilities requires a comparable grade operator in responsible
cyanide ........ . ..... . ..................... is
charge.
(p) Treatment processes for removal of toxic
materials other than metal or Cyanide ......... is
Facilities having an activated sludge process will be assigned
a minimum classification of Class II.
SLUDGE TREATMENT
Facilities having treatment processes for the removal of metal
(a) Sludge Digestion Tank - Heated ...............
10 or cyanide will be assigned a minimum classification of Class 11.
Aerobic ...... .... . ....
5
Unheated .............
3 Facilities having treatment processes for the biological removal
(b) Sludge Stabilization (chemical or thermal) .......
5 of phosphorus will be assigned a minimum classification of Class
(c) Sludge Drying Beds - Gravity ................ .
2
Vacuum Assisted .......
5
Sludge -Elutriation ... . .........................
(d ) �„
5 In -plant processes and related control equiprrtent which are an
(e) Sludg46 Conditioner (chemical or thermal) ........
5 integral part of industrial production shall not be considered waste
(f) SIudgJ �hickener (gravity) ......................
5 treatment. Likewise, discharges of wastewater from residences
(g) 'bissolved Air Flotation Unit
having a design flow of 1,000 gpd or less, shall not be subject to
rn64 applicable to a unit rates as (3) () .........
8 rating.
(h) SWdge Gas Ulilizalion (including gas storage) ....
2
(i) Sludge Holding Tank - Aerated ................
5 ADD1TIONA COMMENTS,
Non -aerated ............
2
G) Sludge Incinerator - (not including activated
carbon regeneration) .. ..
10
(k) Vacuum Filter, Centrifuge or Filler Press or other
similar dewalering devices ................. ...
10
(8) SLUDGE DISPOSAL (including incinerated ash)
(a) Lagoons ........................................
2
(b) Land Applicalion (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit ...
10.
-by contracting to a land application operator who
��►t}}
holds the land application permit ............. ..i2i
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated .........
10
(c) Landfilled (burian ............................
5
(b) DISINFECTION
(a) Chlorination ........ _ ....................
,q
5
(b) Dechlorination ........................
(c) Ozone ..............................
5
(d) Radiation ..........................
5

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