NC0067318_Permit Issuance_20060417

O�1N ATF Michael F.Easley,Governor
`0 QG William G.Ross Jr.,Secretary
rNorth Carolina Department of Environment and Natural Resources
>_
Alan W.Klimek,P.E.Director
Division of Water Quality
April 17, 2006
Dr. Rodney Shotwell
Macon County Schools
P.O. Box 1029
Franklin, North Carolina 28744
Subject: NPDES Permit Issuance
Permit No. NCO067318
Nantahala School WWI?
Macon County
Dear Dr. Shotwell:
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).
The permit authorizes Macon County Schools to discharge up to 0.002 MGD of treated
wastewater and up to 0.003 MGD (upon rerating of the plant) from the Nantahala School WWTP to
Partridge Creek, a class C-Trout water in the Little Tennessee River Basin. Upon receipt of an
authorization to operate the facility can discharge up to 0.003 MGD. The permit includes discharge
limitations/or monitoring for flow, biochemical oxygen demand (BOD), total suspended solids (TSS),
ammonia and temperature.
The following modification has been made in this final permit:
■ The addition of an effluent page for 0.003 MGD upon approval of re-rating from 0.002
MGD.
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 a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable. 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, Coastal Area Management Act, or any other
Federal or Local governmental permits may be required.
WCartrtMra
a
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone] Customer Service
Internet: www.ncwa=ualiLy.ora Location: 512 N.Salisbury St. Raleigh,NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer-50%Recycledl10%Post Consumer Paper

Letter to Dr. Shotwell
Page 2
If you have any questions or need additional information, please contact Ms. Jacquelyn
Nowell at telephone number(919) 733-5083, extension 512.
cerely,���. /
/anW. Klimek, P.E.
Attachments
cc: Asheville Regional Office/Surface Water Protection
Bob W. Deweese/Dept. of Public Instruction
Permit File
Central Files

' I t
Permit NCO067318
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
Nantahala School VUVUTP
212 Windingstairs Road, south of Fairview
Macon County
to receiving waters designated as Partridge Creek 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 June 1,2006.
This permit and authorization to discharge shall expire at midnight on November 30,2007.
Signed this day April 17,2006. .
IVA W.Klimek,P.E.,Director
ivision of Water Quality
By Authority of the Environmental Management Commission

Permit NCO067318
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge
are hereby revoked, and as of this 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
system with:
■ a primary clarifier tank
■ a holding tank
■ a recirculating sand filter, and
■ tablet chlorination/contact tank
The facility is located at the Nantahala School WV'TP, south of Fairview off
Windingstairs Road in Macon County.
2. Upon receiving an Authorization to Operate from the Division of Water Quality,
treat up to 0.003 MGD of domestic wastewater, and
3. Discharge from said treatment works at the location specified on the attached map
into Partridge Creek, a class C-Trout stream in the Little Tennessee River Basin.

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Iryg j •, EaoerALswrvrr,eesmx,viee o—ra+ �KYLEJ.9M/.` 3 37•30"
Quad:Hewitt,N.C. NCO067318 Facility ,
Stream Class:C-Trout Location
Subbasin:40403 NantahaLa School WWTP
Latitude:35*15'10"
Longitude:83°38'06"
Receiving Stream:Partridge Creek North SCALE 1:21{000

1
t
Permit NCO067318
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until rerating 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:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Daily Measurement Sample Type Sample Location
Average Maximum frequency
Flow 0.002 MGD Weekly Instantaneous Influent or Effluent
BOD,5-day(200-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
NHs as N 2/Month Grab Effluent
Temperature(2C) Weekly Grab Effluent
There shall be no discharge of floating solids or visible foam in other than trace amounts.

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 Pemaittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Daily Measurement Sample Type Sample Location
Average Maximum Frequency
Flow 0.003 MGD Weekly Instantaneous Influent or Effluent
BOD,5-day(201C) 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
NHs as N 2/Month Grab Effluent
Temperature(°C) Weekly Grab Effluent
There shall be no discharge of floating solids or visible foam in other than trace amounts.

1
PUBLIC N( TICE NORTH CAROLINA
d T
33
STATE OF Macon County
NORTH CAR,OLINA
• ivv�c� �ti.. � AFFIDAVITs,f P , GAME sw -
OF PUBLICATION
c slO� ,
f 'h1PDES UNIT
1617MAtL SERVICE
•,TENTER Before the undersigned, a Notary Public of said County and State,
RALEIGH NC 27699- duly commissioned,qualified, and authorized by law to administer
oaths,personally appeared......................
NOTIFICATION OF s
INTENT•TO.ISSUE A ; ......................................DOROTHY HA4LPIN..............................................
,NPD9S WASTEWATER
PERMIT• who is duly sworn,deposes and says: that she is
On the basis of.thorough {
} d lication , ............................Administrative Assistant.......................................
��revie ,
- S�f�,-�ter• F�p�•�� ,
ral� tote
ofNC' 1 •i wa; (owner,partner,publisher,or other officer or employee authorized to make this affidavit)
143`: 1� Pul � vv2=500
and .other�lawful_, tan4lards of The Franklin Press,engaged in the publication of a newspaper known
and xeula North S as TheFranklin Press published, issued and entered as second class
t Carolinas' nvironmental
x �, f .•r °,,,�T mail in the Town of Franklin,in said County and State that she is
1Vanagement t Commission.w,• authorized to make thisaffidavit and sworn statement;that the notice
to-issue a National
,..proposes" - g copy, of which is attached hereto,
pollutant =' Discharge or other legal advertisement a true limul►aon,; System was published in The Franklin Press on the following dates:
I (NPDES)., wastewater ' s-
: . •: March 2006
charge,: permit to.; the.
erson(s)'listed'below effec- ........................ 7,
tive 45 days rrom the.pu sh
date:of this notice. and that the said newspaper in which such notice,paper,document,or
f tteii comments•iggai'd'
F� ! , �� r'• legal advertisement was published was, at the time of each and eve
4-�i he}-propose�ernut;will g P every
•be: occe ted until :30 days such publication, a newspaper meeting all of the requirements and quali-
,rP to,
after;the.publisla thi
of s fications of Section 1-597 of the General Statutes of North Carolina
notice. A11'� comments A and was a qualified newspaper within the meaning of Section 1-597 of
received'-prior to at., are the General Statutes of North Carolina.
r:
onsidered t al:deter:
c yin he fui , -_
ininations regarduig the pro-.
This the 3rd d 2006
posed permit 'Ihe DiOct0r-0- ••••••••••••••••
ay o April
•,,,yam c.r: ;�.:,;.y,, ..
the' -- vision ;of
a ,dec de to:}hold.a ........................ . ... ...... ........ .... ............................................
ri �u ty, Y �? x
public .etmg ti or he_pro ' Signature of rson m •ng affidavit
1 'posed p i, should the
,'Division receive a significant
degree of public interest
Copies of the draft:perinit j: Sworn to and subscribed before me...this...3rd
and'other� uF_n
rtin infor,
ed
r , :� d of........... l........ , 006.
n� ao deter ay Apri .2con present r in
the drafx permit are available
u n request and.payment•of .. ....... ... ......................................................
po ......
the 1 cpsts of-Iseproducti6n Notary P blic
' Mail` . 'fco eiits � 'ann or fl. .�
My commission expires:...........
requests ,for,:informatio to . •• ..... .... ............` .......... ........
the NC. Di vi i 14 of,Water
w u at� esabove address
TAQ �,,�..Att
,� nt ..Sourceor:: ea11 e•.
`'"ni:4V:at,-(4 91 733-5083,

Macon County Schools
P.O. Box 1029
Franklin, NC 28744
October 25, 2005 COT 3 1 2005
II
Susan Wilson
N.C.Division of Water Quality
1617 Mail Service Center
Raleigh, N.C. 27699-1617
Dear Ms. Wilson:
I have enclosed the correspondence dated August 17,2003 in regard to our request for
NPDES permit modifications as you requested in our telephone conversation. Please
review and let me know what can be done.
Sincerely,
Terry el
Chief Operations Officer
e-email terrv.bellLa)mcsk-12.org
telephone [phone] ext.342
Phone[phone] FAX[phone] •[phone]
an equal opportunity/g07rmati've action employer

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: ry g Environment and Natural Resources
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Division of Water Quality
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•PI4ANT OPERATION 919 807 354E 08/20 `03 17:35 N0.439 02/06
August 17, 2003
Mr. Kevin. Barnette
N. C. Division of Water Quality
59 Woodfin Place
Asheville, N. C. 28801
SUBJECT*:- bequest for NPDES Permit Modifications
Increase in Monthly Average Flow
Cullasaja Elementary School (NC0067326)
Nantahala Elementary School (N00067318)
Macon County Schools
Dear Mr. Barnette:
We are requesting flow increases at the subject Cullasaja
and Nantahala Elementary Schoo13 from 0 .002 to 0 . 003 MGD.
I have attached evaluations of each school' s wastewater
treatment capabilities that were prepared by Mr.. Bob
DeWeese,, Environmental Engineer, with NC D?I 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 .
If you have any questions or need additional information
regarding this request, please contact Mr. DeWeese at
(919a07-3546 or 807-3545 FAX. Thank you in advance for
your considerations in this permit modification.
Sincerely,
Dr. Rodney Shotwell, Superintendent
Cc: Mr. David Curtis
Mr. Bob DeWeese

i
?Lt�NT OPERATION 919 B07 3545 08120 '03 17:35 N0.439 03106
WASTEWATER TREATMENT CAPACITY EVALUATION
CULI.ASAJA ELEMENTARY SCHOOL
MACON COUNTY
I8August2003
I. System Components
A. Flow Equalization and duplex pumps (21000 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 n nety-f i vA per cent in
these systems .
Since this is a complex treatment system involving
dual secondary treatment units, 1 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
590.sf x 0.005lbs/d/sf = 2. 9lbs/d./sf

PLANT OPERATION 919 807 3545 08/20 '03 17:35 N0.439 04/06
z
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 11200 gal.
2 . Detention Time (avg. )
1, 200gal/2,000gpd x 24hrs . = 14 . 4 hours
. and
11200gal/31000gpd x 24hrs. = 9. 6 hours, OR
3 . Detention Time (de nami.c)
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 properl .
Prepared. by: Bob W. DeWeese
August 20, 2003

PLANT OPERATION 919 807 3545 08/20 '03 17:36 N0.439 05/06
WASTEWATER TREATMENT CAPACITY EVALUATION
NANTAHALA ELEMENTARY SCHOOL
MACON COUNTY
I8August2003
I. System Components
A. Flow Equalization and duplex pumps (2, 000 Gal)
B. Aero-Flow Package Unit, SO-200 (2400 GPD)
.C. Recirculating Sand Filter. 625 SF
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 orga.)ai.c loads
are reduced by seventy-Live 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 filler as the primary
system and the flow equalization/pack.-age unit as
preliminary treatment.
A. Sand. Filter
1. Size:
23' 8" x -26' 5" = -625 SF (Sand replaced 2002)
2. Loading Rates (Tertiary Treatment)
a. Hydraulic Loading 5-6 gpd/sf
625sf_ x 5gpd/sf = 3, '25gpd
Permitted Flow = 31 OOOgpd
b. Organic Loading -0. 005 lbs/d/sf
625sf. x 0. 005lbs/d/sf = 3. 125 lbs/d

.PLANT OPERATION 919 807 3545 08/20 '03 17:36 N0.439 06/06
Assuming 50/50,BOD/TSR, ma/1 in effluent;
worst case conditions,
Lbs/day = 0.002MGD x 50mg/). 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.
P. Chlorine Contact
1. Size 1,200 ga.l.
2. Detention Time (avg. )
1, 200gal/2, 000gpd x 24hrs. = 1.4 . 4 hours
and
1, 200gal/3, 000gpd x 24hrs. = 9.6 hours, OK
3. Detention Time . (dynamic)
500 gallon dose over a one Dour period.
1, 200gal/500oph = 2 .4 hours, OK
Therefore, the 0.5 hour contact time is
satisfied.
f
It is my professional opinion based on these calculations
and the historical performance data of this treatment
system that treating 3f000gpd is sustainable at this site
if it is operated and maintained properly.
Prepared by: Bob W. DeWeese
August 20, 2003

ENGINEERING AILTERNAT IVE S ANALYSIS (EAA)
I. GENERAL INFORMATION
A. Project Identification:
Nantahala School WWTP
Mr. David Curtis
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
(919) 807-3546; FAX [phone]
B. Nantahala School operates under NPDES Permit No.
NCO067318 issued by the Division of Water Quality.
The proposed project would be for a wastewater
system for 140 regular students and 60 Smart Start
students, therefore:
(140 students + 40 S. Start) x 12 GPC = 2, 400 GPD
Note: The addition of flow conservation devices
should reduce the daily flow by -200 (max. ) .
21400 GPD x 0. 80 = N1, 920 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: NA
Connecting by Gravity Sewer is economically
unfeasible.

B. Connecting to private treatment works N/A
C. Individual subsurface system 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) :
1 . Use existing treatment $ 000 .00
2 . Install Storage 150,000 Gal. 40.000.00
3. Purchase 3 acres minimum 36,000.00
4. Install UV Disinfection 13,500 .00
5. Install Duplex Pump Station 15,000.00
6. Install 3" PVC Force Main, 5000' 50,000.00
7 . Install pipe network/drip tube 32,000.00
8. Install Control Building/Controls 25,000.00
9. Landscaping, etc. 3,500.00
10. Electrical 3,000.00
11. Misc. Piping 1,500.00
Subtotal 219,500 .00
Engineering/contingencies 44,000.00
TOTAL $263,500.00
Operational Costs/year $ 11,500.00
F. Spray Irrigation N/A
G. Reuse N/A
H. Ex. Surface water discharge to Partridge Creek:
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. Land application with Drip/Spray:
PW = Present cost + Annual Cost
PW = -$263, 500 + (-11, 500) (9. 8181) _ - .$376,408
B. Ex. Discharge to Partridge Creek:
(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
4) Wastewater Services of NC, INC.
Costs for operation were derived from actual costs the
Macon County Public Schools are paying for analytical
services from their contract laboratory and in-house
personnel for operations and maintenance.

WASTEWATER TREATMENT CAPACITY EVALUATION
NANTAHALA 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 (21000 GPD)
C. Recirculating Sand Filter 625 SF
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:
23' 8" x 26' 5" = -625 SF (Sand replaced 2002)
2 . Loading Rates (Tertiary Treatment)
a. Hydraulic Loading 5-6 GPD/SF
625sf x 5gpd/sf = 3, 125gpd
Permitted Flow = 3,000 gpd
b. Organic Loading -0 . 005 lbs. /D/SF
625sf x 0.0051bs/d/sf = 3. 125 lbs. /D

Assuming 50/50, BOD/TSR, mg/l in effluent;
worst case conditions,
Lbs/day = 0. 002MGD x 50mg/1 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, 200ga1/500gph = 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. DeWees
January 11, 2 06

Macon County Schools
Subject: Macon County Schools
From: Forrest Westall <[e-mail]>
Date: Tue, 11 May 2004 12:58:17 -0400
To: Susan A Wilson <[e-mail]>
CC: Kevin Barnett <[e-mail]>
Susan,
I talked to Bob DeWeese with the State Superintendent's
office about Cullasaja and Nantahala Schools. They had
requested a flow increase with the last permit renewal, but
that request was denied. I reviewed the WWTP capacity at
both schools and the student population numbers. The State
flow figures with the current student population numbers
would put both schools over their current 2,000 gpd limit
(12 gpcd). Both plants have sand filters and the other
parameters on their effluent quality are excellent (they
have secondary limits). The school system asked for the
flow increases to protect them from potential enforcement.
Because per capita water usage is significantly lower than
the State guideline, they are currently in compliance with
the flow limit, but the levels are approaching the limit and
are close to going over. Also, Cullasaja district is
growing and next year they could have populations that
result in a flow violation. I think that increasing the
flow limit at each plant is certainly supportable by the
student numbers and the capacity of the plants. Both plants
are 2000 gal capacity and would still provide adequate 18
hours detention at 3000 gpd (this is what they requested at
both plants). Chlorine contact time is OK at 3000 gpd and
even if clarifer overflow rates are a bit high, they have
sand filter capacity following the clarifer. If we wait
until they start having flow violations, we will be placing
the schools in the enforcement machine for no go good
reason. Assimulative capacity is good in both receiving
streams and other alternatives are not available (Cullasaja
is miles from Franklin and Nantahala is away from
everything--it's in the middle of woods). The option of
increasing permit flow is the most appropriate and is
supported by the facilities present. I've suggested to Bob
that he meet with you about these requests and better
explain the need. Keeping unnecessary flow expansions out
of permits is a good thing, but the Macon County schools
requests make sense for their situation. I would be happy
to discuss this with you,just let me know. Thanks for the
consideration. Forrest
Forrest Westall - [e-mail]
North Carolina Dept. of Environment and Natural Resources
Asheville Regional Office
Division of Water Quality - Water Quality Section
2090 U.S. 70 Highway
1 of 2 5/18/2004 11:13 AM

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