NC0071773_Permit Modification_20060222

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
February 22, 2006
Dr. Barbara R. Todd
Yadkin County Schools
121 North Washington Street
Yadkinville, North Carolina 27055
Subject: Modification of NPDES Permits
NC0071773 / Forbush High School t
NC0070459 / Starmount High School
NC0029599 / Courtney Elementary
Yadkin County
Dear Dr. Todd:
The Division has reviewed and approved a request from Mark Matthews, ORC for the facilities listed
above. Mr. Matthews correctly noted that the installation of UV disinfection systems obviated the need for
mandatory monitoring of Total Residual Chlorine (TRC). The Winston-Salem Regional Office concurred with
his request to make TRC monitoring optional [required only if chlorine is used for disinfection] in the subject
permits. Therefore, this modification adds UV disinfection to each Supplement to Permit Cover Sheet, as
well as making TRC monitoring optional. No other changes to the permits have been made.
Please find enclosed the revised pages, which should be inserted into your permits. The old pages may
then be discarded. All other terms and conditions contained in the original permit remain unchanged and in
full effect. This permit modification is issued under the requirements of North Carolina General Statutes
143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental
Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit modification
are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be a written petition conforming to Chapter 150B
of the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail Service
Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and
binding. If you have any questions concerning this permit modification, please contact Charles Weaver of
the NPDES Unit at [phone], extension 511.
Sincerely,
;;%anW. IUimek, P.E.
cc: Central Files
Winston-Salem Regional Office / Sue White
VPDES UmtT
Mark Matthews / Yadkin County Schools ORC
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
512 N. Salisbury St, Raleigh, North Carolina 27604 NOnrthCarolina
Phone: [phone] FAX [phone] Internet: h2o.enr.state.nc.us An Equal Opportunity/Affirmative Action Employer -50% Recycledll0% Post Consumer Paper Natzmallff

Permit NC0071773
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit
issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate
and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein.
The Yadkin County Board of Education hereby authorized to:
1. Continue to operate an existing wastewater treatment system that includes the
following components:
➢ Grease trap
➢ Three aeration basins
➢ Clarifier
➢ Aerated sludge storage tank
➢ UV disinfection
➢ Post aeration
This facility is located at Forbush High School, off Falcon Road southwest of East
Bend in Yadkin County.
2. Discharge treated wastewater from said treatment works at the location specified
on the attached map into Forbush Creek (via outfall 001), currently classified
WS-IV waters in the Yadkin -Pee Dee River Basin.

Permit NC0071773
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration,
the permittee is authorized to discharge from outfall 001. Such discharges shall be limited
and monitored by the Permittee as specified below:
2,{:
.�
.*�y,bsti�-k..'l
3 P"' i'�
v.}
7�,�:r'�'
��.�+.<';_
,ilt3t'�►�,'
�`�J
ri
iI's
4�.� �>i�y la���,
I NFSvoS�e.i'E�
y`��xP�d��ei�,�mi`p+l.�y
�S� .t�?
.i,1tLt:�
•
Fy�1.��` l
3l.
i
�INt�
{i��
.•7JiWE-E-
�yS�[+)j] �.�aFis�.t'."lri`s�J•.
T
�-�,`S.0•_E^:J/
jvb��
2i�1
1f. V�.�'
K((�
if
�!
ctt'
, -.,
;�. r�r?_Ti�
��i<:r- _y['T
•{yifi..�!`q'� l
.0
::`t�r4k.L�T.p:0.
:�-}.
C.
`r
.a:.f^'
! �
te� 4r
.w
`�YL`fi
;E
�'•E
�T
' t
jr��'�6�in
�.�.
iM'.
4 ���
�/\
•CV�uJr�i�+xy4frIS
sa�•.''^
.m��;'i
4��"I.±t:�'° s�._.
.�Da
.`Y �I�� .;
yf:,�_,J�f•IA�,��?:�.J-'T
aM1 KsavuM.ur�Mee�.�'�SO
( rIiv.o 5f^.1 �
NO-* a
�''
�Y}}6.
-,yr
�;�
�swi's1*��4s't.�.Fy
�i�
}.y_�.�f
���
,ar�-.'�
;'4
a .
�G'mokb�'!�
'I
,�1F:ery;�iR,i��
-�mo:�
Flow
0.015 MGD
Weekly
Instantaneous
Influent or Effluent
BOD, 5-day, 20' C
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
NHa as N
2/Month
Grab
Effluent
Total Residual Chlorine'
28 Ng1L
2/Week
Grab
Effluent
Temperature (C)
Weekly
Grab
Effluent
pH
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Fecal Coliform
200/100 ml
400/100 ml
Weekly
Grab
Effluent
(geometric mean
Total Nitrogen (TN)
Quarterly
Grab
Effluent
Total Phosphorus(TP)
Quarterly
Grab
Effluent
Footnotes:
1. Limit and monitoring requirements apply only if chlorine is added to the treatment
system.
There shall be no discharge of floating solids or visible foam in other than trace amounts
Modified 2122/06

a
Charles Weaver,
I would like to request a permit change due to a change in
operation of our wastewater plants. We are no longer using
chlorine as a disinfectant. We have replaced the chlorine with LTV
systems at the following sites.
Forbush Elementary 29602
Forbush High 71773P
Courtney Elementary 29599
East Bend Elementary 29611
Starmount High 70459
I also operate a plant for the town of East Bend. We have gone to
UV disinfection there also. The plant ID is 64726.
We have kept the original systems for tablets of chlorine and
dechlorine in case of a power outage.
Thank you,
Mark Matthews ORC