WQ0006941_Final Permit_19970731

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 31, 1997
Mr. C.L. McGee, Superintendent
Caswell County Schools
Post Office Box 160
Yanceyville, North Carolina 27379
Dear Mr. McGee:
LTI.KMAI
I',
DEHNR
Subject: Permit No. WQ0006941
Caswell County Schools
Stoney Creek Elementary School
Wastewater Spray Irrigation
Caswell County
In accordance with your application received May 8, 1997, we are forwarding herewith Permit No.
WQ0006941 dated July 31, 1997, to Caswell County Schools for the continued operation of the subject
wastewater treatment and spray irrigation facilities.
This permit shall be effective from the date of issuance until June 30, 2002, shall void Permit No.
WQ0006941, issued February 26, 1993, 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.
If you need additional information concerning this matter, please contact Matt Williams at (919)
733-5083 extension 509.
Sincerely
T
._,4A. Preston Howard, Jr., P.E.
CC.' Caswell County Health Department
Winston-Salem Regional Office, Water Quality Section
Winston-Salem Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Training and Certification Unit
Facilities Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, 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
continued operation of a 3,500 GPD spray irrigation treatment and disposal facility consisting of 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 irrigation 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 May S, 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 June 30, 2002, shall void Permit No.
WQ0006941 issued February 26, 1993 and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARDS
1. 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 Permittee shall take immediate
corrective actions including those actions that may be required by the bivision of Water
Quality, such as the construction of additional or replacement wastewater treatment and
disposal facilities.
2. The issuance of this permit shall not relieve the Perrnittee of the responsibility for damages
to surface or groundwaters resulting from the operation of this facility.
3. 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 North Carolina Division of
Water Quality.
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.
H. OPERATION AND MAINTENANCE REQUIREMENTS
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, II1, 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.
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.
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 system to
prevent the discharge of any wastewater resulting from the operation of this facility.
7. The application rate shall not exceed a cumulative loading of 18.72 inches over any twelve
(12) month period at an instantaneous application rate not to exceed .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.
11. Freeboard in the lagoon shall not be less than two feet at any time.
III. MONITORING AND REPORTING REQUIREMENTS
Any monitoring (including groundwater, surface water, soil or plant tissue analyses)
deemed necessary by the Division of Water Quality 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:
BOD5 TSS
Fecal Coliform pH
NH3 as N
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 June, October, and February. All
information shall be submitted to the following address:
NC Division of Water Quality
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh; NC 27626-0535
5. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem 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 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.
IV. GROUNDWATER REQUIREMENTS
Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
2. 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 individually permitted 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 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 Iog 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 of Water Quality or other permitting authority.
Any duly authorized officer, employee, or representative of the Division of Water Quality
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.
4

VI. GENERAL CONDITIONS
1. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
2. 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 Perrittee, a formal permit request must be
submitted to the Division of Water Quality 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.
3. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Water Quality in accordance with
North Carolina General Statute 143-215.6(a) to 143-215.6(c).
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).
The Pern-iittee, 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 31 st day of July, 1997
NORTH CARQLINA EN MO NTAL MANAGEMENT COMMISSION
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0006941

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RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant: -s— 4e-,-,
Owner or Contact Person- C L / I G �
Mailing Address: cl. .� a(
County: Telephone:
NPDES Permit No.(NC00 e-" Nondisc. Per. No., GJ Q 0 0 0/,S 1W
IssueDate: Expiration
Date:
Existing Facility New Facility
Rated By: C; �� v . /(�_ Date:3-
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.) Centra Office
ORC �� Ea- _ Nc , } ��,� ��c�.)Grade
7 Z" h-t-c") Go -el- C
Plant Class: (circle one) � 11 111 IV Total Points —,-,-z
ITEM POINTS
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(1)
Industrial Pretreatment units and/or
(i)Aeration - High Purity Oxygen System .....
20
Industrial Pretreatment Program
Diffused Air System ....... _ ...
10
(see definition No. 33)
4
Mechanical Air System (fixed,
(2)
DE IS, G FLOW OF PLANT IN GPD
floating or rotor) ......... .
8
(not applicable to non -contaminated cooling waters, sludge
Separate Sludge Reaeration .....
3
handling facilities for water purification plants, totally
(ii) Trickling Filter
closed cycle systems (def. No. 11). and facilities
High Rate ...................
7
consisting only of Item (4) (d) or items (4) (d) and (11) (d}
Standard Rate ............. • .
5
0 20,000..........................
Cl
Packed Tower...............
5
20,001 -- 50,000..........................
• • • • • • • -
2
(iii) Biological Aerated Fitter or Aerated
50,001 -- 100.000 ...... ... ... ..
3
Biological Fifter ......... . ........... .
10
100.001 -- 250,000 ..........................
4
(iv) Aerated Lagoons ..................... _
10
250,001 -- 500,000 ........................ . .
5
500,001--1,000,000 ................... . ......
a
(v) Rotating Biological Contactors ..........
10
1,000.001 -- 2,000.000 ........................
10
2,000,001 (and up) - rate 1 point additional for each
(v i) Sand Fillers-
200,000 gpd capacity up to a
inlernitlenl biological ....'
maximum of 30
recirculating biological .. ..
s
Design Flaw (gpd) : �• D C) _
(vii) Stabilization Lagoons ...................
5
(3)
PRELIMINARY UNITS (see definition no. 32)
(viii)Clarifier ..............................
5
(a) Bar Screens ................................
1
(ix) Single stage system for combined
or
carbonaceous removal of GOD and
(b) Mechanical Screens, Static Screens or
nitrogenous removal by nitrification
Comminuting Devices ........... .............
2
(see def_ No. 12) (Points for this item
(c) Grit Removal . ................. . ............
1
have to be in addition to items (5) (a)
or
(i) through (5) (a) (vin) .................
8
(d) Mechanical or Aerated Grit Removal ...........
2
(x) Nutrient additions to enhance GOD
(e) Flow Meas6ring Device .......................
1
removal ......................... _ .....
5
or
(xi) Biological Culture ("Super Bugs") addition
{f} inFiow measurement ..............
2
to enhance organic compound removal .. _ ..
5
(4) Preaeration ...................... . .........
2
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System .....
20
(h) Influent Flow -Equalization ...................
2
Diflused Air System ...........
10
(i) Grease or Oil Separators - Gravity ..........
2
mechanical Air System (fixed,
Mechanical ..........
3
floating• er rotor) ...... ......
8
Dissolved Air Flotation.
8
Separate Sludge Reaeralion .....
3
0) Prechlorination ..............................
5
(ii) Trickling Filter -
High Rate ..............
7
(4)
PRIMARY TREATMENT UNITS
Septic 43)
�
Standard Pale ............
5
(a) Tank (see definition no. ..............
`2J
Packed Tower .... _ ......
5
(b) Imhoff Tank ..................................
5
(iii) Biological Aerated Filter or Aeraled
(c) Primary Clarifiers ............................
5
Biological Filler .. . ............... . . . ....
10
(d) Settling Ponds or Settling Tanks for Inorganic
(iv) Rolaling Biological Contactors . _ .. _ .......
10
Nan -toxic Malerials {sludge handling facilities
(v) Sand Filter -
for water purification plants, sand, gravel,
inlermiUent biological ... ....
2
slope, and other mining operations except
recirculahng biological ..
3
recrealional activities such as gem or gold
(vi) Clarifier . . . ...... . ......................
5
mining) ......................................
2

(6) TERTIARY OR ADVANCED TREATMENT UNIT
(a}
Activated Carbons Beds -
wilhout carbon regeneration ..................
5
with carbon regeneration ....................
is
(b)
powdered or Granular Activated Carbon Feed -
without carbon regeneration .................
5
with carbon regeneration ....................
15
(c)
Air Stripping ...........................
5
(d)
Denitrifiration Process (separate process) .....
10
(e)
EfeCrodialysis ..............................
5
(f}
Foam Separation .............................
5
(g)
Ion Exchange ................................
5
(h)
Land Application of Treated Effluent
(see definition no- 22b) (not applicable for
sand, gravel, stone 'and other similar mining
operations)
(i) on agriculturally managed sites (See def.
No.4)...................................
10
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar Fixed nozzle systems) ...........
4'
(M) by subsurface disposal (includes tow pressure
pipe systems and gravity systems except at
plants consisting of septic lank and nitrifica-
tion lines only) ........................ . ....
4
(i)
Microscreens..................................
5
{j)
Phosphorus Removal by Biological Processes
(See def. No. 25) ............................
20
(k)
Polishing Ponds - without aeration .......
2
with aeration ..........
5
(1)
Post Aeration cascade ..............
0
diffused or mechanical ...
5
(m)
Reverse Osmosis ...............................
5
(n)
Sand or Mixed -Media Filters - low rate ...........
2
high rate ..........
5
(o)
Treatment processes for removal of metal or
Cyanide....................................
15
a}
Treatment processes for removal of loxic
materials other than metal or cyanide .........
15
l SLUDGE TREATMENT
(a)
Sludge Digestion Tank - Heated ...............
10
Aerobic.. .. .. . . . ......
5
Unhealed .............
3
(b)
Sludge Slabilizatfon (chemical or thermal) .......
5
(c)
Sludge Drying Beds - Gravity .................
2
Vacuum Assisted ..... _ .
5
(d)
Sludge Eluirialion .................... . ........
5
(e)
Sludge Conditioner (chemical or thermal) ........
5
(f)
Sludge Thickener (gravity) ......................
5
(g)
Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) N .........
8
(h)
Sludge Gas Ulifzation (includdng gas storage) . - ..
2
(i)
Sludge bolding Tank - Aerated ................
5
Non -aerated ............
2
(j)
Sludge Incinerator - (not including activated
carbon regeneration) - ... -
10
(k)
Vacuum Filter, Centrifuge or Filler Press or other
similar dewaiering devices ....................
10
(8) SLUDGE DISPOSAL (including incinerated ash)
(a)
Lagoons ........................................
2
(b)
Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit ...
10
-by contracting to a land application operator who
/n�1
holds the land applicalion permit ................l2
-land applicalion of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated .........
10
(c)
LandNied (burial) .............................
5
(9) DISINFECTION
(a)
Chforination .............................
�5 j
(b)
Dechlorinalion .... . . . ............... .
(c)
Ozone ..............................
5
(d)
Radiation ..........................
5
(10) -CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
(not applicable to chemical additions rated as item
(3) 6). (5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e),
(9) (a), (9) (b), or {9) (c) 5 points each: Lis[:
5
5
(11) MISCELLANEOUS UNITS
(a) Holding Ponds. Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
greater than is common for domestic wastewater ..........0
(b) Effluent Flow Equalization (not applicable to storage
basins which are inherent in [arid application systems). 2
(c) Stage Discharge (not applicable to storage basins
inherent in land application systems .....................................
(d) Pumps._ ......:................ _ r_................................_----
(e) Stand -By Power Supply ..._......... ... ...................................... ......
(f) Thermal Pollution Control Device ............................................. 3
TOTAL POINTS
CLASSIFICATION
Class I ....................... _.............. __..._._.... 5 - 25 Paints
Class 11................. ............. .................. __ 26; 50 Points
Class III .................................... .......... _..... 51- 65 Points
Class IV ................................. 66- Up Points
Facilities having a rating of one through four points, inclusive,
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible
charge.
Facilities having an activated sludge process will be assigned
a minimum classification of Class II.
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
Ill.
In -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment. Likewise, discharges of wastewater from residences
having a design flow of 1.000 gpd or less, shalt not be subject to
rating,
ADDITIONAL COMMENT,5: