NC0067326_Permit Issuance_20060519

OF WATF9
� r NCDENR
Dr. Rodney Shortwell, Superintendent
Macon County Schools
P.O. Box 1029
Franklin, North Carolina 28744
Dear Dr. Shortwell:
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
May 19, 2006
Subject: Issuance of NPDES Permit NCO067326
Cullasaja School WWTP
Macon County
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated May 9, 1994 (or as subsequently amended).
This final permit includes no major changes from the draft permit sent to you on March 29, 2006.
If any parts, measurement frequencies or sampling requirements contained in this permit 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 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, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain
other permits which may be required by the Division of Water Quality or permits required by the Division of Land
Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be
required. If you have any questions concerning this permit, please contact Sergei Chernikov at telephone number
[phone], extension 594.
Sincerely,
job an W. Klimek, P.E.
cc: Central FIles
,DES Files t
Asheville Regional Office / Surface Water Protection Section
N. C. Division of Water Quality / NPDES Unit Phone: [phone]
1617 Mail Service Center, Raleigh, NC 27699-1617 fax: [phone]
Internet: h2o.enr.state. nc.us DENR Customer Service Center: 1 800 623-7748

Permit NCO067326
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations
promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water
Pollution Control Act, as amended, the
Macon County Schools
are hereby authorized to discharge wastewater from a facility located at the
Cullasaja School WWTP
145 River Road, east of Franklin
Macon County
to receiving waters designated as the Cullasaja River in the Little Tennessee River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective July 1, 2006.
This permit and authorization to discharge shall expire at midnight on November 30, 2007.
Signed this day May 19, 2006.
C-4- 61 IAk
kIW. Klimek, P.E., Director
Sion of Water Quality
By Authority of the Environmental Management Commission

Permit NCO067326
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 Macon County Schools are hereby authorized to:
1. Continue to operate an existing 0.002 MGD extended -aeration wastewater treatment
facility with the following components:
♦ Aero-Flo Aerobic Digestion treatment system
♦ Sand filter
♦ Chlorine chamber
♦ Polishing tank
The facility is located at the Cullasaja School WVUTP, east of Franklin off River Road in
Macon County.
2. After receiving an Authorization to Construct permit from the Division, construct
wastewater treatment facilities not to exceed 0.003 MGD design flow.
3. After submitting an Engineer's Certification, discharge from said treatment works at the
location specified on the attached map into the Cullasaja River, a class B-Trout stream in
the Little Tennessee River Basin.

4
CA I L
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itlt��tJ �'l� 1�1�~!!l t � � /�/ �.✓ % 11�� / � , �•iJ�-/'7 r 'f�• �P''iY� //��/�/�� +'��
ROAD CLASSIFICATION
PRfM'ARYHN3MAY SCALE 1:24 WO
UGKr-DUrY FKXAD, HAR
HARD SURFACE WNW� IMPROVED SURFACE 0
I . .. . . .. I D OR MILE
SECONDARY NOWAY
HARD SURFACE UN%VROVED PAMD 7000 FEET
LatitudeL151IQ914an , Longitude: 83018'53N
Map # G5NE Sub -basin 04040.1
Stream Class 13- . Trout
Discharge Class -'03-Domestic
Recei.ving Stream Cullasaia River
0 1 KILOMETER
CONTOUR INTERVAL 40 FEET -
QUAD LOCATION
Macon County Board of
Educatidn
Cullasala School-NC0067326"
Macon County'.

Permit NCO067326
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning upon expansion to 0.003 MGD 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:
PARAMETER t r
h � ,LIMITS ' ` ,
MONIINGTORkEQUIREMENTS
Q
�`��`
:
Monthly
SDaily
Measurement
Sample Type
°`Sample Location
1
Average s� ;
Maximum'
:Frequency;
A ;
Flow
0.003 MGD
Weekly
Instantaneous
Influent or Effluent
BOD, 5-day (20°C)
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
NH3 as N
Monthly
Grab
Effluent
Fecal Coliform (geometric mean)
200/100 mL
400/100 mL
2/Month
Grab
Effluent
Total Residual Chlorine
28 Ng/L
2/Week
Grab
Effluent
Temperature (°C)
Weekly
Grab
Effluent
pH1
2/Month
Grab
Effluent
Footnotes:
2. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NCO067326
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expansion to 0.003 MGD, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
PARAMETER , x
LIMITS
4 MONITORING REQUIREMENTS
t
Monthly
Daily
Measurement
Sample Type
Sample Location
f ' `
. y ..
.-
Avera e,
9
r
Maximum- <,k
.<<
Fre uenc
q Y
-
k^t {
Q
..
.
�..x. _
_ . r.
Flow
0.002 MGD
Weekly
Instantaneous
Influent or Effluent
BOD, 5-day (20°C)
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
NH3 as N
Monthly
Grab
Effluent
Fecal Coliform (geometric mean)
200/100 mL
400/100 mL
2/Month
Grab
Effluent
Total Residual Chlorine
28 pg/L
2/Week
Grab
Effluent
Temperature (°C)
Weekly
Grab
Effluent
pHl
2/Month
Grab
Effluent
Footnotes:
1. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

ivxacun I.oUmyy
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State,
duly commissioned, qualified, and authorized by law to administer
oaths, personally appeared................................................................
......................................DOROTHY HALPIN .....................................
who is duly sworn, deposes and says: that she is
............................Administrative Assistant........................................
(Owner, partner, publisher, or other officer or employee authorized to make this affidavit)
of The Franklin Press, engaged in the publication of a newspaper known
as TheFranklin Press published, issued and entered as second class
mail in the Town of Franklin, in said County and State that she is
authorized to make thisaffidavit and sworn statement; that the notice
or other legal advertisement, a true copy, of which is. attached hereto,
was published in The Franklin Press on the following dates:
.................. April 4, W06
and that the said newspaper in which such notice, paper, document, or
legal advertisement was published was, at the time of each and every
such publication, a newspaper meeting all of the requirements and quali-
fications of Section 1-597 of the General Statutes of North Carolina
and was a aualified newspaper with;,, the

F E3 1 3 2Gr7
January 24, 2006
Mr. Allen Klimek,P.E., Director
NCDENR
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBJECT: Request for NPDES Permit Modifications
Increase in Monthly Average Flow
Cullasaja Elementary School (NC0067326)
Nantahala Elementary School (NC0067318)
Macon County Schools
Dear Mr. Barnette:
We are requesting flow increases at the subject Cullasaja
and Nantahala Elementary Schools from 0.002 to 0.003 MGD,
respectively. Enclosed please find the completed
applications and a check for $430.
I have attached Engineering Evaluations of each school's
wastewater treatment capabilities and the required
Engineering Alternative Analyses (EAA) that were prepared
by Mr. Bob DeWeese, Environmental Engineer, with NC DPI
Plant Operation Section in Raleigh. These evaluations and
our historical monthly monitoring data demonstrates that
each of these facilities can meet the requested flow
increases and still maintain a high quality effluent that
will meet the other parametric requirements contained in
the permits. Additionally, the FAA's support the existing
treatment systems as the most economically feasible
alternative.
If you have any questions or need additional information
regarding this request, please contact Mr. DeWeese at

[phone] or [phone] FAX. Thank you in advance
for your considerations in this permit modification.
Sincerely,
f
Dr. Rodney Shotwell, Superintendent
Cc: Asheville Regional Office
Mr. David Curtis
Mr. Bob DeWeese

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ENGINEERING ALTERNATIVES ANALYSIS (EAA)
I. GENERAL INFORMATION
A. Project Identification:
Cullasaja Elementary WWTP
Macon County
145 River Road
Franklin, NC 28734-8920
828-524-2744 FAX: [phone]
Bob W DeWeese, Environmental Engineer
N. C. DPI, Plant Operation Section
301 N. Wilmington Street
Raleigh, N. C. 27601
[phone]; FAX [phone]
B. Cullasaja Elementary School operates
under NPDES Permit No. NC0067326 issued by the
Division of Water Quality.
The proposed projects would be for a wastewater
system for 225 students, therefore:
225 students x 12 GPC = 2,700 GPD
Note: The addition of flow conservation devices
should reduce the daily flow by -200 (max.).
2,700 GPD x 0.80 = -2,160 GPD
C. Existing facilities:
See attached "Wastewater Treatment Capacity
Evaluation" of January 2006.
D. Construction will not be phased.
No construction is requested.
Phased schedule is not applicable.
II. EVALUATE DISPOSAL ALTERNATIVES
A. Connecting to POTW by F/M:
1. -3 miles (-15,600') of 3" PVC F/M $234,000
2. Cullasaja River Crossing (-190') 57,000
3. Two small creek crossings (-1201) 36,000
4. US 441 boring (-3401) 34,000

5. Pump Station (dual pumps)
6. Clean -out at 1,000' intervals
7. Connection Fees
8. Engineering Fees
9. Contingency (100)
TOTAL
Annual operating cost
Connecting by Gravity Sewer is economically
unfeasible. Propose using DOT ROW on US 64.
B. Connecting to private treatment works
C. Individual.subsurface system
30,000
8,000
2,500
GRATIS
40,000
$441,500
$ 6,000
N/A
N/A
Local Health Department evaluations of soil conditions
at the school and the local area demonstrate the soils
to be unsuitable.
D. Community Subsurface
N/A
E. Drip Irrigation (surface and subsurface) N/A
Local Health Department Report is attached detailing
soil conditions at the school and the local area.
F. Spray Irrigation N/A
(See E above)
G. Reuse N/A
(See E above)
H. Ex. Surface water discharge to Callasaja River:
Modifications are not necessary to increase
treatment capacity to 0.0030MGD at existing
permitted effluent limitations.
Annual operating costs $15,625

III. CALCULATING PRESENT VALUE OF COSTS FOR EACH OPTION
Assuming 8% interest and a life cycle of 20 years
A. Pump station/Force main'to Town of Franklin:
PW = Present cost + Annual Cost
PW =-$441,500 + (-6,000)(9.8181) _ - $500,409
B. Ex. Discharge to Cullasaja River:
(Secondary limitations)
PW = 0 + (-15,625)(9.8181) _ - $153,407
Costs for construction were derived from the following:
1) RS MEANS
2) Costs of recent facilities
3) Best Professional Judgement
Costs for operation were derived from actual costs Macon
County Public Schools are paying for analytical services
from their contract laboratory and in-house personnel for
operations and maintenance.
NOTE: This facility and school are to be replaced and
relocated in the next five years.

WASTEWATER TREATMENT CAPACITY EVALUATION
CULLASAJA ELEMENTARY SCHOOL
MACON COUNTY
January 11, 2006
I. System Components
A. Flow Equalization and duplex pumps (2,000 Gal)
B. Aero-Flow Package Unit, SO-200 (2,000 GPD)
C. Recirculating Sand Filter 580 SF
D. Tablet Chlorination/Contact'Tank (1,200 Gal)
II. Treatment Capacity
Usually a recirculating sand filter treatment system
is preceded by an anaerobic system (septic tank) that
reduces the organic loads by approximately fifty per
cent. However the use of sand filters after an
aerobic system, either as "polishing" or as a separate
secondary treatment unit,' is a preferred option since
aerobic conditions are maintained continuously
throughout the sand filter. In addition organic loads
are reduced by seventy-five to ninety-five per cent in
these systems.
Since this is a complex treatment system involving
dual secondary treatment units, I have chosen to
evaluate the recirculating sand filter as the primary
system and the flow equalization/package unit as
preliminary treatment.
A. Sand Filter
1. Size:
22'2" x 26'2" = -580 SF (Sand replaced 2002)
2. Loading Rates (Tertiary Treatment)
a. Hydraulic'Loading 5-6 gpd/sf
580sf x 5gpd/sf=,2,900gpd
580sf x 6gpd/sf = 3,480gpd
Permitted Flow = 3,000gpd
b. Organic Loading -0.005 lbs/d/sf
580sf x 0.0051bs/d/sf = 2.91bs/d/sf

Assuming 50/50,BOD/TSR, mg/1 in effluent;
worst case conditions,
Lbs/day = 0.002MGD x 50mg/l x 8.34= 0.83
THEREFORE, HYDRAULIC LOADING RATE CONTROLS.
Since these loading rates are conservative and we
have demonstrated the treatment capability of this facility
over the years, a treatment capability of 3,000gpd is
sustainable. This loading rate would be 5.2 GPD/SF and is
very conservative considering the organic concentration is
so low and that the preliminary treatment unit's efficiency
is maximized by flow equalization.
B. Chlorine Contact
1. Size 1,200 gal.
2. Detention Time (avg.)
1,200ga1/2,000gpd x 24hrs. = 14.4 hours
and
1,200ga1/3,000gpd x 24hrs. = 9.6 hours, OK
3. Detention Time (dynamic)
500 gallon dose over a one hour period.
1,200gal/500gph
= 2.4 hours, OK
Therefore, the 0.5 hour contact time is
satisfied.
It is my professional opinion based on these calculations
and the historical performance data of this treatment
system that treating 3,000gpd is sustainable at this site
if it is operated and maintained properly.
Prepared by: Bob W. DeWeese�
January 11, 2006

NC0067326 Cullasaja School jmn
NC0067318 Nantahala School
Expansion requests for 2000 GPD to 3000. GPD
1/20/2006 - Talked with Bob Deweese about the schools and he said that he would
contact the schools and let them know what they needed to submit. He said that a
modified EAA had been done in the past for the schools but had gotten misplaced.
He indicated that he could update all the information and sent it to Macon County
Schools for them to forward to us. The schools have no other alternative but to expand.
There are no nearby towns to connect to. A soil test had been done in the past, but there
was not enough suitable soils for nondischarge options to be used.
He said he would talk to the schools and let them know they needed to submit
applications, fees, and an EAA.
NPDES will forward an official letter asking for the same things, but including spec
limits for both schools. Preliminary modeling indicated that existing limits would protect
instream DO at the higher flow of 3000 GPD.
Level B model results
Cullasaja School at expanded flow of 0.003 MGD
Model segment length = 5.3 miles
Predicted DO minimum - 7.72 mg/1 at milept 0.0
End CBOD — 1.69 mg/1
End NBOD — 0.81 mg/l
End DO — 8.35 mg/l
Nantahala School at 0.003 MGD
Model segment length = 0.2 miles
Predicted DO minimum - 7.70 mg/1 at milept 0.0
End CBOD — 2.08 mg/l
End NBOD —1.23 mg/l
End DO — 8.41 mg/1

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Permit NCO067318
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning upon rerating to 0.003 MGD 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:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
0.003 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
NH3 as N
2/Month
Grab
Effluent
Fecal Coliform
Weekly
Grab
Effluent
Total Residual Chlorine
Weekly
Grab
Effluent
Temperature (°C)
Weekly
Grab
Effluent
There shall be no discharge of floating solids or visible foam in other than trace amounts.

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Macon County BOE - Cullasaja School
Residual Chlorine
Ammonia as NIi3
(summer)
7Q10 (CFS)
36.6
7Q10 (CFS)
36.6
DESIGN FLOW (MGD)
0.003
DESIGN FLOW (MGD)
0.003
DESIGN FLOW (CFS)
0.00465
DESIGN FLOW (CFS)
0.00465
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (I
. 0
UPS BACKGROUND LEVEL
0.22
IWC (%)
0.01
IWC (%)
0.01
Allowable Concentration (ugi
133823.45
Allowable Concentration (m
6140.35
Ammonia as NH3
(winter)
7Q10 (CFS) 45":
Fecal Limit
200/100ml
DESIGN FLOW (MGD)
0.003
Ratio of 7871.0 :1
DESIGN FLOW (CFS)
0.00465
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVEL
0.22
IWC (%)
0.01
Allowable Concentration (m
15428.04
NC0067326 1/13/2006