NC0032131_Permit Issuance_20080314

Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
March 14, 2008
Mr. Chris Robbins
Tweetsie Railroad, Inc.
300 Tweetsie Railroad Lane
Blowing Rock, North Carolina 28605
Subject: Issuance of NPDES Permit NC0032131
Tweetsie Railroad WWTP
Watauga County
Dear Mr. Robbins:
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 October 15, 2007 (or as subsequently amended).
This final permit contains no significant changes from the draft you were sent on January 16, 2008.
In your Engineering Alternatives Analysis, you presented several options for limited reuse of treated
wastewater at your facility. Although this permit will allow you to discharge the full capacity of your WWTP, the
Division encourages you to pursue any available reuse opportunities. Please refer to the Division's Land
Application Unit at http://www.ncwaterquality.org/lau/main.html for more information on reclaimed and
conjunctive use regulations and permit requirements.
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 Toya Fields at telephone number (919)
733-5083, extension 551.
Sincerely,
(mR:Coleen H. Sullins
cc: Central Files
Winston-Salem Regional Office/Surface Water Protection
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://h2o.enr.state.nc.us/
An Equal opportunity/Affirmative Action Employer
NorthCarolina
JVatura!!j

Permit NC0032131
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,
Tweetsie Railroad, Incorporated
is hereby authorized to discharge wastewater from a facility located at the
Tweetsie Railroad
US Highway 321 South
Northeast of Blowing Rock
Watauga County
to receiving waters designated as Middle Fork of the South Fork New River in the New 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 April 1, 2008.
This permit and authorization to discharge shall expire at midnight on March 31, 2011.
Signed this day March 14, 2008.
Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0032131
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.
Tweetsie Railroad, Incorporated is hereby authorized to:
1. Continue to operate an existing 0.070 MGD wastewater treatment system with the
• following components:
• Bar screen
• Splitter Box
• Dual equalization basins
• Dual aeration basins
• Dual clarifiers
• Chlorination
• Dechlorination
• Tertiary filters
• Flow meter
• Re -aeration
• Stand-by power
The facility is located northeast of Blowing Rock at Tweetsie Railroad on US lalighway 321
South in Watauga County.
2. Upon receipt of an Authorization to Contruct from the Construction Grants and Loans
Section, operate a wastewater treatment plant not to exceed 0.175 MGD
3. Discharge from said treatment works at the location specified on the attached map into
the Middle Fork of the South Fork New River, classified WS-IV-Trout + waters in the
New River Basin.

NC0032131 — Tweetsie Railroad WWTP
titude:
Longitude:
Ouad Name:
$cream Class.
Receiving Stream:
36°09'53"
81°38'47"
Boone
WS-Iv
Middle Fork of the South Fork New River
Sub -Basin:
05-07-0I
NOT TO SCALE

Permit NC0032131
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expansion above 0.07 MGD
or permit 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
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
_
Sample
Location
Flow
0.07 MGD
Continuous
RecordingInfluent
r .
or
Effluent
BOD, 5-day (20°C)
(April 1 - October 31)
5.0 mg/L
7.5 mg/L
Weekly
Composite
Effluent
BOD, 5-day (20°C)
(November 1- March 31)
10.0 mg/L
15.0 mg/L
Weekly
Composite
Effluent
Total Suspended Solids
10.0 mg/L
15.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(April 1 -October 31)
2.0 mg/L
10.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(November 1 - March 31)
4.0 mg/L
20.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygenl
Weekly
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100 ml
400/100 ml
Weekly
Grab
Effluent
Total Residual Chlorine
17 ug/L
2/Week
Grab
Effluent
Temperature (°C)
Weekly
Grab
Effluent
Total Nitrogen
(NO2+NO3+TKN)
Semi -Annually
Composite
Effluent
Total Phosphorus
Semi -Annually
Composite
Effluent
pH2
Weekly
Grab
Effluent
Footnotes:
1. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L.
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 NC0032131
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning upon receipt of an Engineers Certification for expansion to 0.175 MGD and
lasting until permit expiration, 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
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Santple
Location
Flow
0.175 MGD
Continuous
RecordingInfluent
or
Effluent
BOD, 5-day (20°C)
(April 1— October 31)
5.0 mg/L
7.5 mg/L
Weekly
Composite
Effluent
BOD, 5-day (20°C)
(November 1 — March 31)
10.0 mg/L
15.0 mg/L
Weekly
Composite
Effluent
Total Suspended Solids
10.0 mg/L
15.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(April 1 —October 31)
'
2.0 mg/L
10.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(November 1 — March 31)
4.0 mg/L
20.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen'
Weekly
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100 ml
400/100 ml
Weekly
Grab
Effluent
Total Residual Chlorine
17 pg/L
2/Week
Grab
Effluent
Temperature (°C)
Weekly
Grab
Effluent
Total Nitrogen
(NO2+NO3+TKN)
Semi -Annually
Composite
Effluent
Total Phosphorus
Semi -Annually
Composite
Effluent
pH2
Weekly
Grab
Effluent
Footnotes:
3. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L.
4. 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

300 Tweetsie Railroad Lane
Blowing Rock
North Carolina 28605
EET t
•RAI LROAD•)
January 30, 2008
LeToya Fields
NC Division of Water Quality
1617 Mail Service Center
Raleigh NC 27699-1617
Re: NPDES Permit NC0032131
Dear Toya:
828-264-9061 phone
828-264-2234 fax
www.tweetsie.com
FEB
Thank you for sending the Draft NPDES Permit for the expansion of Tweetsie
Railroad's wastewater treatment plant.
We have reviewed this draft permit, as has our plant operator. We have no comments
or corrections to submit, so the draft permit can proceed to the next phase of approval.
We very much appreciate your assistance in getting this permit to this stage of
approval. If there are any further actions required by me or by Tweetsie Railroad, Inc. as
applicant, please let me know immediately so we can move toward a final permit.
Best wishes to you and your staff.
Sincerely,
Chris Robbins
President
CC: Steve Gandy, MESCO

Acct. Name:
NCDENR/DWQ/NPDES
Acct. # 112162
COST OF PUBLICATION
Total $ 1 25.79
PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION/NPDES UNIT
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE A
NPDES WASTEWATER PERMIT
On the basis of thorough staff review and application of NC General
Statute 143.215.1 and 15A NCAC 02H.0109 and other lawful
standards and regulations, the North Carolina Environmental
Management Commission proposes to issue a National Pollutant
Discharge Elimination System (NPDES) wastewater discharge permit
to the person(s) listed below effective 45 days from the publish date
of this notice.
Written comments regarding the proposed permit wit be accepted
until 30 days after the publish date of this notice. All comments
received prior to that date are considered in the final determinations
regarding the proposed permit. The Director of the NC Division of
Water Quality may decide to hold a public meeting for the proposed
permit should the Division receive a significant degree of public
interest.
Copies of the draft permit and other supporting information on file
used to determine conditions present in the draft permit are available
upon request and payment of the costs of reproduction. Mail
comments and/or requests for information to the NC Division of
Water Quality at the above address or call Dina Sprinkle (919) 733-
5083, extension 363 at the Point Source Branch. Please include the
NPDES permit number (below) in any communication. Interested
persons may also visit the Division of Water Quality at 512 N.
Salisbury Street, Raleigh, NC 27604-1148 between the hours of 8:00
a.m. And 5:00 p.m. To review information on file.
Tweetsie Railroad, Inc. (P.O. Box 388, Blowing Rock NC 28605) has
applied for an increase in NPDES Permit Number NC0032131 for the
Tweetsie Railroad WWTP in Watauga County. The increase would
allow a discharge of 0.175 MGD of treated wastewater to the Middle
Fork of the South Fork New River Basin. Some parameters may be
water quality limited, which may affect future allocations in this
portion of the New River Basin.
,**"%1 4-4''- k3 y 3'*4`r
.7 G: • '§worn to and subscrj d before me, this
`� •: _'8th day of January, 2008
•
AFFIDAVIT OF PUBLICATION
NORTH CAROLINA-WATAUGA COUNTY
Before the undersigned, a Notary Public of said County
and State, duly commissioned, qualified and authorized by the
law to administer oaths, personally appeared:
Who being first duly sworn, deposes and says: that he (she) is
REPRESENTATIVE
of a newspaper known as THE WATAUGA DEMOCRAT, publishe
issued and entered as second class mail in City of Boone,
in said County and State; that he (she) is authorized to make
this affidavit and sworn statement; that the notice of other legal
advertisement, a true copy of which is attached hereto, was
published in THE WATAUGA DEMOCRAT the following dates :
NPDES WASTEWATER PERMIT
01 /18/2008
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 qualifications of Section 1-597 of the
General Statutes of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the General
Statutes of North Carolina.
This 18th day of January, 2008
1.7 • <' •
,6s`j 1� P,' •a
Notary Public
4-eLet4}2)
My Commission Expires:

LEVEL B Model
FACT SHEET FOR PERMIT LIMIT DEVELOPMENT
Tweetsie Railroad WWTP
NPDES No. NC0032131
Facility Information
Applicant/Facility Name:
Tweetsie Railroad
Permitted Flow
Current flow: 0.07 MGD; request for 0.175
Type of Waste:
100% Domestic
County:
Union
_
Miscellaneous
Receiving Stream:
Middle Fork
South Fork New
River
Regional Office:
Winston-Salem
Stream Classification:
Stream Index Number:
WS-IV; Tr+
10-1-2-(6)
Quad
C12NW, Boone
303(d) Listed?:
Not listed
Level B modeler:
Toya Fields
Subbasin:
New Basin
05 07 01
Date:
12/31/07
Drainage Area (mi2):
9.6
II
Summer 7Q10 (cfs)
3.5
Winter 7Q10 (cfs):
5.5
Average Stream Flow (cfs):
19
IWC (%) at Proposed Flow:
7
ANALYSIS AND DISCUSSION:
Tweetsie Railroad has requested an expansion of its existing WWTP from 0.07 MGD to 0.169 MGD. The
Engineering Alternatives Analysis justifies a flow of 0.188 MGD, not including a subtraction of 0.0019
MGD for potential reuse reductions. Although the permit application requests a flow of 0.169 MGD, the
treatment plant will be built to a capacity of 0.175 MGD, therefore this full flow will be granted for the
expansion request.
The Middle Fork South Fork New River is not on the Draft 2008 303(d) list. The New Bason plan does
indicate that there appear to be impacts related to non -point sources and that local agencies are
encouraged to install BMPs and implement sediment and erosion plans. Due to the "+" classification of
this stream segment, 15A NCAC 2B .0225(c) requires the following limits:
• BOD = 5 mg/L
• NH3=2mg/L
• TSS = 10 mg/L for trout waters
• Standyby power capability and dual train design for all treatment components or equivalent
failsafe treatment design
Additionally, the trout classification prescribes a TRC limit of 17 pg/L.
A level b model was developed in 1989 that schematized the stream and included waste inputs from the
Town of Blowing Rock (NC0027286), Roaring River Chalets (NC0032158), Summit Woods Apts
(NC0039608), and Tweetsie Railroad. That schematization was used for this expansion request with a few
minor changes. The previous model interpreted a map feature downstream of Tweetsie Railroad as a
dam. Upon further observation of aerial maps, it appears that the area may behave more like a free
flowing river. Therefore the slopes were recalculated for Seg1 R5 and Seg3 R1 and the standard model
velocity assumptions were used.
The model predicts quite a high ammonia contribution from the Town of Blowing Rock resulting in a
very high NBOD. However given the low prescribed limits for Tweestie Railroad, the model does not

predict an impact instream. The CBOD and NBOD levels, elevated as a result of the Blowing Rock
effluent, decrease quickly throughout the modeled stream segments.
Based on the results of the model, recommended effluent limits for 0.175 MGD are as follows:
Effluent Characteristic
Effluent Limitations
Monthly Average
Daily Maximum
BOD5 (summer)
5.0 mg/L
7.5 mg/L
BOD5 (winter)
10.0 mg/L
15.0 mg/L
NH3 as N (summer)
1.0 mg/L
3.0 mg/L
NH3 as N (winter)
2.0 mg/L
6.0 mg/L
Total Suspended Solids
10 mg/L
15 mg/L
Dissolved Oxygen
5.0 mg/L
Total Residual Chlorine
17 pg/L
Fecal Coliform
200/100 mL
400/100 mL
STATE CONTACT:
Western NPDES Program - Level B Modeling Contact: Toya Fields, (919) 733 — 5083, ext. 551

NC0032131
Facility: Tweetsie Railroad WWTP
Discharge to: WS-IV; Tr +
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Conc. (ug/I)
Fecal Limit
Ratio of 12.9 :1
3.5
0. 175
0.27125
17.0
0
/ yZ,
(*°0+-
200/100m1
For Minor domestic -type facilities:
Minimum of 2 mg/I (summer) NH3-N; 4 mg/I (winter) NH3-N
Ammonia as NH3
(summer)
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
Ammonia as NH3
(winter)
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
Chlorine:
Residual chlorine must be capped at 28 ug/I to protect for acute toxicity effects
3.5
0.175
0.27125
1.0
0.22
5.5
0.175
0.27125
1.8
0.22
4.70
/1/1/0- /6

MODEL INPUTS FOR LEVEL B ANALYSIS
( 41)
�9F/a
GENERAL INFORMATION
Facility Name: �, Jo_er, Q�,,,,
p(
NPDES No.: Nw3 ai3 1
.-
/ '/ Type of Waste: ZicryiEs
Ti C
Facility Status: ki criA,6
Receiving Stream: I�>L�
K 3
ty l�
Stream Classification: W j— 1 V
Y R -t
Subbasin: Os 0 7 (J
County: 6JCi A
Regional Office: F.S.f.tC Ui L_ G
Topo Quad: C/ 4 IU l J
goottic
FLOW INFORMATION I
_
USGS#
Date of Flow Estimates: %47,'
. ,,a
;.d
Ipi a Dok
Drainage Area (mi2): 3
:log_
. �4- 6 , G
tip • )
-
Summer 7Q10 (cfs): a
1
!
rn �Lli\
Winter 7Q10 (cfs): ) .3
Ur '
Average Flow (cfs): (,, p J
30Q2 (cfs):
IWC at Point of Discharge (%):
Cummulative IWC (%):
MODEL INPUT INFORMATION
S.1 Qz
•
Si.sled i3
Si -1/
LENGTH OF REACH (miles)
/• GlS
O. 3c
/. i',S
1. 0
INCREMENTAL LENGTH (miles)
a i
O. /
D • /
a- /
J
WASTE CHARACTERISTICS
FLOW (MGD)
O. R
D.00S
D.18
CBOD (mg/1)
if
7.
NBOD (mg/1)
9O
10
q
D.O. (mg/1)
C
_ 0
0
RUNOFF CHARACTERISTICS
7Q10 (cfs/mi)
Q, 6 7
U, b 7
D. 7
v, L
QA (th/mi)
3.
3,
3 ('
1
CBOD (mg/l)
NBOD (mg/1)
D.O. (mg/1)
TRIBUTARY CHARACTERISTICS
•
7Q10 (cfs)
—
QA (cfs)
CBOD (mg/1) .
NBOD (mg/1)
D.O. (mg/1)
SLOPE (fpm)
.5�. a
_ .'•1. a
3 ,
/a a
S
O. a,-
0.r
0,6 7
7/. 9
Name of facility

MODEL INPUTS FOR LEVEL B ANALYSIS
GENERAL INFORMATION
Facility Name:
1
NPDES No.:
_
Type of Waste:
Facility Status:
Receiving Stream:
17\_-
Stream Classification:
Subbasin:
County:
Regional Office:
Topo Quad:
FLOW INFORMATION
USGS#
Date of Flow Estimates:
Drainage Area (mi2):
OS
Summer 7Q10 (cfs):
Q
Winter 7Q10 (cfs):
Average Flow (cfs):
Q. /.
30Q2 (cfs):
IWC at Point of Discharge (%):
Cummulative IWC (%):
MODEL INPUT INFORMATION
5 RI
SJ el •
S'3 a
JJ R3
LENGTH OF REACH (miles)
0, is
0. a
O, / (
0. (
INCREMENTAL LENGTH (miles)
O, OS
19, (9 S
0, QS
b,
WASTE CHARACTERISTICS
FLOW (MGD)
a 0033
CBOD (mg/1)
Lea
NBOD (mg/1)
I
D.O. (mg/1)
C
RUNOFF CHARACTERISTICS
7Q10 (cfs/mi)
O. lS
Q, l S
0. /3
QA (cfs/mii
a,17
0.87
D. J7
CBOD (mg/1)
NBOD (mg/1)
D.O. (mg/1)
TRIBUTARY CHARACTERISTICS•
7Q10 (cfs)
0, a .7
QA (cfs)
/, s
CBOD (mg/1)
NBOD (mg/1)
D.O. (mg/1)
SLOPE (fpm)
L33
1)% !
aa,)
qL/
Name of facility

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SUMMER
MODEL RESULTS
Discharger : TWEETSIE RAILROAD
Receiving Stream : MIDDLE FORK SOUTH FORK NEW RIVER
The End D.O. is 8.33 mg/l.
The End CBOD is 7.58 mg/1.
The End NBOD is 12.35 mg/1.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 6.11 0.00 1
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Segment 2 5.00 0.00 1
Reach 1
Segment 3 8.17 0.00 1
Reach 1
Reach 2
Reach 3
45.00 90.00 5.00 0.80000
45.00 90.00 0.00 0.00500
0.00 0.00 0.00 0.00000
7.50 9.00 0.00 0.18900
0.00 0.00 0.00 0.00000
45.00 9.00 5.00 0.00830
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000

*** MODEL SUMMARY DATA ***
Discharger
Receiving Stream .
Summer 7Q10
Design Temperature:
TWEETSIE RAILROAD Subbasin : 050701
MIDDLE FORK SOUTH FORK NEW RIVER Stream Class: WS IV
3.5 Winter 7Q10 : 5.5
23.0
ILmiKa Ka le I ft/mil VELfppsTY I Dft Idesign l @20° Kd Idesign) @20° design
Segment 1
Reach 1
1.45
52.20 0.398 0.66
0.65 1 0.56
39.88
37.36
0.63
Segment 1
Reach 2
0.35
52.20
0.410
0.72
0.62
0.54
41.08 38.48 0.63
Segment 1
Reach 3
1.65
30.20 0.364
0.84
0.45
0.39
21.10
19.76 0.63
Segment 1
Reach 4
1.00
30.20
0.401
0.92
0.45
0.39
23.27
21.80
0.63
Segment 1
Reach 5
0.25
71.40
0.525
0.83
0.66
0.58
53.37 1 50.00
0.63
Segment 2
Reach 1
0.15
1333.001
0.100 1 0.09 1 0.97 1 0.85 153.37 1 50.001 0.63
Segment 3
Reach 1
0.20
71.40
0.534
0.85 1 0.66
0.58
53.37 1 50.00
0.63
Segment 3
Reach 2
0.18
222.00
0.743
0.73
0.93 1 0.81
53.37
50.00
0.63
Segment 3
Reach 3
0.85
94.00
0.581
0.83
0.71
0.62 53.37
50.00
0.63
Flow
cfs
Segment 1 Reach 1
Waste 1.240
Headwaters 0.850
Tributary 0.000
* Runoff 0.670
CBOD NBOD D.O.
mg/1 mg/1 mg/1
45.000 90.000 5.000
2.000 1.000 7.720
2.000 1.000 7.720
2.000 1.000 7.720

Segment 1 Reach 2
Waste 0.008
Tributary 0.000
* Runoff 0.670
Segment 1 Reach 3
Waste 0.000
Tributary 0.000
* Runoff 0.670
Segment 1 Reach 4
Waste 0.293
Tributary 0.000
* Runoff 0.670
Segment 1 Reach 5
Waste 0.000
Tributary 0.000
* Runoff 0.670
Segment 2 Reach 1
Waste 0.013
Headwaters 0.000
Tributary 0.000
* Runoff 0.000
Segment 3 Reach 1
Waste 0.000
Headwaters 0.000
Tributary 0.270
* Runoff 0.150
Segment 3 Reach 2
Waste 0.000
Tributary 0.000
* Runoff 0.150
Segment 3 Reach 3
Waste 0.000
Tributary 0.000
* Runoff 0.150
45.000
2.000
2.000
0.000
2.000
2.000
7.500
2.000
2.000
0.000
2.000
2.000
45.000
2.000
2.000
2.000
0.000
2.000
2.000
2.000
0.000
2.000
2.000
0.000
2.000
2.000
* Runoff flow is in cfs/mile
90.000
1.000
1.000
0.000
1.000
1.000
9.000
1.000
1.000
0.000
1.000
1.000
9.000
1.000
1.000
1.000
0.000
1.000
1.000
1.000
0.000
1.000
1.000
0.000
1.000
1.000
0.000
7.720
7.720
0.000
7.720
7.720
0.000
7.720
7.720
0.000
7.720
7.720
5.000
7.720
7.720
7.720
0.000
7.720
7.720
7.720
0.000
7.720
7.720
0.000
7.720
7.720

SUMMER
Seg # I Reach # I Seg Mi I D.O. I CBOD
1 1 0.00 6.11 27.51
1 1 0.10 6.69 26.46
1 1 0.20 7.02 25.46
1 1 0.30 7.22 24.53
1 1 0.40 7.34 23.66
1 1 0.50 7.42 22.83
1 1 0.60 7.48 22.05
1 1 0.70 7.53 21.31
1 1 0.80 7.57 20.61
1 1 0.90 7.61 19.95
1 1 1.00 7.64 19.32
1 1 1.10 7.67 18.73
1 1 1.20 7.70 18.16
1 1 1.30 7.73 17.62
1 1 1.40 7.75 17.10
1 2 1.35 7.73 17.17
1 2 1.45 7.78 16.69
1 2 1.55 7.81 16.23
1 2 1.65 7.84 15.79
1 3 1.60 7.84 15.79
1 3 1.70 7.70 15.39
1 3 1.80 7.62 15.01
1 3 1.90 7.57 14.64
1 3 2.00 7.54 14.29
1 3 2.10 7.53 13.96
1 3 2.20 7.53 13.63
1 3 2.30 7.54 13.32
1 3 2.40 7.56 13.02
1 3 2.50 7.58 12.73
1 3 2.60 7.60 12.46
1 3 2.70 7.62 12.19
1 3 2.80 7.64 11.93
1 3 2.90 7.66 11.68
1 3 3.00 7.68 11.43
1 3 3.10 7.70 11.20
1 3 3.20 7.72 10.97
1 4 3.20 73 - 10.75
1 4 3.30 7.43 10.55
1 4 3.40 7.57 10.36
1 4 3.50 7.67 10.17
1 4 3.60 7.75 9.99
1 4 3.70 7.80 9.82
1 4 3.80 7.85 9.64
1 4 3.90 7.88 9.48
1 4 4.00 7.91 9.32
1 4 4.10 7.93 9.16
1 4 4.20 7.95 9.01
1 5 4.15 7.95 9.01
1 5 4.25 8.11 8.85
1 5 4.35 8.20 8.70
2 1 0.00 5.00 45.00
2 1 0.05 7.15 43.68
2 1 0.10 7.59 42.40
2 1_ Q 15 __ 7.69 41.16
3 1 0.00 8.17 8.45
3 1 0.05 8.21 8.41
NBODFlow
53.80 - 4-�1C � v
2 . 09 �/ '^�
51.66 2.16 (T
49.65 2.22
47.76 2.29
45.99 2.36
44.31 2.43
42.73 2.49
41.24 2.56
39.83 2.63
38.49 2.69
37.21 2.76
36.01 2.83
34.86 2.89
33.76 2.96
32.72 3.03 _
3 � . 86
31.88 3 .k 3c ri rt � a � kktir
3.1100
30.93 3.17
30.03 3.24
30.03 3.24
29.13 3.30
28.27 3.37
27.45 3.44
26.66 3.50
25.90 3.57
25.17 3.64
24.48 3.71
23.80 3.77
23.16 3.84
22.54 3.91
21.94 3.97
21.37 4.04
20.82 4.11
20.28 4.17
19.77 4.24
19.27 4.31
18.62 4 . 6D - -- 11 c`r fj
18.19
17.77
17.37
16.98
16.61
16.24
15.89
15.54
15.21
14.88
14.88
14.60
14.33
9.00
8.83
8.66
8.50
13.68
13.62
4.67
4.74
4.80
4.87
4.94
5.00
5.07
5.14
5.20
5.27
5.27
5.34
5.41 1 r,h 00,12
0.01
0.01 £''«- t(4J
10
0.01
0.01
5.69
5.70
/1v4

1
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Seg
#I
1 0.10
1 0.15
1 0.20
2 0.17
2 0.22
2 0.27
2 0.32
3 0.27
3 0.37
3 0.47
3 0.57
3 0.67
3 0.77
3 0.87
3 0.97
3 1.07
Reach # I Seg Mi
1
8.24
8.26
8.27
8.27
8.27
8.27
8.27
8.27
8.29
8.30
8.31
8.31
8.32
8.32
8.32
8.33
D.O.
1
8.37
8.33
8.29
8.29
8.25
8.21
8.17
8.17
8.10
8.02
7.94
7.87
7.80
7.72
7.65
7.58
CBOD
1
13 .55
13.49
13.42
13.42
13.37
13.32
13.27
13.27
13 .15
13.03
12.91
12.80
12.68
12.57
12.46
12.35
NBOD
1
5.70
5.71
5.72
5.72
5.73
5.73
5.74
5.74
5.76
5.77
5.79
5.80
5.82
5.83
5.85
5.86
Flow

WINTER
MODEL RESULTS
Discharger : TWEETSIE RAILROAD
Receiving Stream : MIDDLE FORK SOUTH FORK NEW RIVER
The End D.O. is 10.58 mg/1.
The End CBOD is 8.78 mg/1.
The End NBOD is 15.91 mg/l.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 7.43 0.00 1
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Segment 2 5.00 0.00 1
Reach 1
Segment 3 10.42 0.00 1
Reach 1
Reach 2
Reach 3
45.00 90.00 5.00 0.80000
45.00 90.00 0.00 0.00500
0.00 0.00 0.00 0.00000
15.00 18.00 0.00 0.18900
0.00 0.00 0.00 0.00000
45.00 9.00 5.00 0.00830
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000

*** MODEL SUMMARY DATA ***
Discharger
Receiving Stream .
Summer 7Q10
Design Temperature:
TWEETSIE RAILROAD Subbasin : 050701
MIDDLE FORK SOUTH FORK NEW RIVER Stream Class: WS IV
3.5 Winter 7Q10 : 5.5
12.0
ILleHI e SLOPE
VELOCITY I DldKd l ` Ka ) Ka Imimfft design @20° design@20° design
Segment 1
Reach 1
1.45
52.20
0.452
0.67
0.42
0.60 35.68
42.47
0.27
Segment 1
Reach 2
0.35
52.20
0.455
0.73
0.40
0.57
35.92
42.76
0.27
Segment 1
Reach 3
1.65
30.20
0.397
0.85
0.28 1 0.41
18.13
21.58 0.27
Segment 1
Reach 4
1.00
30.20
0.429
0.93 1 0.28
0.41
19.61
23.34
0.27
Segment 1
Reach 5
0.25
71.40
0.560
0.84
0.41
0.60
42.01
50.00
0.27
Segment 2
Reach 1
0.15
1333.001
0.100 1 0.09 1 0.59 1 0.85 142.01 1 50.001 0.27
Segment 3
Reach 1
0.20
71.40
0.566
0.86
0.41
0.59 42.01
50.00
0.27
Segment 3
Reach 2
0.18
222.00
0.788
0.73
0.59
0.84
42.01 1 50.00
0.27
Segment 3
Reach 3
0.85
94.00
0.615
0.83
0.45
0.64
42.01 1 50.00
0.27
Flow
cfs
Segment 1 Reach 1
Waste 1.240
Headwaters 1.330
Tributary 0.000
* Runoff 0.670
CBOD NBOD D.O.
mg/1 mg/1 mg/1
45.000 90.000 5.000
2.000 1.000 9.700
2.000 1.000 9.700
2.000 1.000 9.700

Segment 1 Reach 2
Waste 0.008
Tributary 0.000
* Runoff 0.670
Segment 1 Reach 3
Waste
Tributary
* Runoff
0.000
0.000
0.670
Segment 1 Reach 4
Waste 0.293
Tributary 0.000
* Runoff 0.670
Segment 1 Reach 5
Waste 0.000
Tributary 0.000
* Runoff 0.670
Segment 2 Reach 1
Waste 0.013
Headwaters 0.000
Tributary 0.000
* Runoff 0.000
Segment 3 Reach 1
Waste 0.000
Headwaters 0.000
Tributary 0.270
* Runoff 0.150
Segment 3 Reach 2
Waste 0.000
Tributary 0.000
* Runoff 0.150
Segment 3 Reach 3
Waste 0.000
Tributary 0.000
* Runoff 0.150
45.000
2.000
2.000
0.000
2.000
2.000
15.000
2.000
2.000
0.000
2.000
2.000
45.000
2.000
2.000
2.000
0.000
2.000
2.000
2.000
0.000
2.000
2.000
0.000
2.000
2.000
* Runoff flow is in cfs/mile
90.000
1.000
1.000
0.000
1.000
1.000
18.000
1.000
1.000
0.000
1.000
1.000
9.000
1.000
1.000
1.000
0.000
1.000
1.000
1.000
0.000
1.000
1.000
0.000
1.000
1.000
0.000
9.700
9.700
0.000
9.700
9.700
0.000
9.700
9.700
0.000
9.700
9.700
5.000
9.700
9.700
9.700
0.000
9.700
9.700
9.700
0.000
9.700
9.700
0.000
9.700
9.700

WINTER
Seg #
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
3
3
Reach # I Seg Mi
1 0.00
1 0.10
1 0.20
1 0.30
1 0.40
1 0.50
1 0.60
1 0.70
1 0.80
1 0.90
1 1.00
1 1.10
1 1.20
1 1.30
1 1.40
2 1.35
2 1.45
2 1.55
2 1.65
3 1.60
3 1.70
3 1.80
3 1.90
3 2.00
3 2.10
3 2.20
3 2.30
3 2.40
3 2.50
3 2.60
3 2.70
3 2.80
3 2.90
3 3.00
3 3.10
3 3.20
4 3.20
4 3.30
4 3.40
4 3.50
4 3.60
4 3.70
4 3.80
4 3.90
4 4.00
4 4.10
4 4.20
5 4.15
5 4.25
5 4.35
1 0.00
1 0.05
1 0.10
1 0.15
1 0.00
1 0.05
D.O.
7.43
8.53
9.19
9.59
9.84
10.00
10.10
10.16
10.21
10.24
10.26
10.28
10.30
10.31
10.32
10.30
10.32
10.34
10.35
10.35
10.29
10.25
10.22
10.20
10.19
10.18
10.18
10.18
10.19
10.19
10.20
10.21
10.21
10.22
10.23
10.24
9.65
9.81
9.94
10.04
10.11
10.17
10.21
10.24
10.27
10.29
10.31
10.31
10.40
10.46
5.00
8.69
9.72
10.01
10.42
10.46
CBOD
22.75
22.09
21.47
20.89
20.32
19.79
19.28
18.79
18.33
17.88
17.45
17.04
16.65
16.27
15.91
15.97
15.63
15.30
14.98
14.98
14.68
14.40
14.13
13.86
13.61
13.36
13.12
12.89
12.67
12.45
12.24
12.04
11.84
11.65
11.46
11.28
11.49
11.32
11.16
11.00
10.84
10.69
10.54
10.40
10.26
10.12
9.98
9.98
9.85
9.71
45.00
44.20
43.41
42.64
9.44
9.41
NBOD I Flow
43.94 2.57
42.69 2.64
41.51 2.70
40.38 2.77
39.31 2.84
38.28 2.91
37.31 2.97
36.37 3.04
35.48 3.11
34.63 3.17
33.81 3.24
33.02 3.31
32.27 3.37
31.54 3.44
30.85 3.51
30.98 3.52
30.31 3.58
29.66 3.65
29.04 3.72
29.04 3.72
28.42 3.78
27.83 3.85
27.26 3.92
26.71 3.98
26.17 4.05
25.66 4.12
25.16 4.19
24.67 4.25
24.20 4.32
23.75 4.39
23.31 4.45
22.89 4.52
22.47 4.59
22.07 4.65
21.68 4.72
21.30 4.79
21.11 5.08
20.77 5.15
20.44 5.22
20.11 5.28
19.80 5.35
19.49 5.42
19.19 5.48
18.90 5.55
18.61 5.62
18.34 5.68
18.06 5.75
18.06 5.75
17.82 5.82
17.57 5.89
9.00 0.01
8.93 0.01
8.85 0.01
8.78 0.01
16.83 6.17
16.78 6.18

1
3 1 0.10 10.48
3 1 0.15 10.50
3 1 0.20 10.52
3 2 0.17 10.52
3 2 0.22 10.52
3 2 0.27 10.52
3 2 0.32 10.52
3 3 0.27 10.52
3 3 0.37 10.54
3 3 0.47 10.55
3 3 0.57 10.56
3 3 0.67 10.57
3 3 0.77 10.57
3 3 0.87 10.57
3 3 0.97 10.57
3 3 1.07 10.58
Seg # I Reach # I Seg Mi I D.O.
1
9.38
9.35
9.32
9.32
9.29
9.27
9.24
9.24
9.18
9.12
9.06
9.01
8.95
8.89
8.84
8.78
CBOD
16.74
16.70
16.65
16.65
16.62
16.58
16.55
16.55
16.46
16.38
16.30
16.22
16.14
16.06
15.98
15.91
NBOD
1
6.18
6.19
6.20
6.20
6.21
6.21
6.22
6.22
6.24
6.25
6.27
6.28
6.30
6.31
6.33
6.34
Flow

NC DENR - DIVISON OF WATER QUALITY 2B . 0300
.0307
NEW RIVER BASIN
Name of Stream
Description
Class
Classification
Date Index No.
NEW RIVER (North Carolina
Portion)
South Fork New River
From confluence of North and
South Forks New River to the
last point at which it
crosses the North
Carolina -Virginia State Line
From confluence of Middle
Fork South Fork New River
and East Fork South Fork New
River to Winkler Creek (Town
of Boone water supply
intake)
Middle Fork South Fork New From source to Brown Branch
River (Chetola Lake)
Stringfellow Branch (Bass
Lake)
Flattop Branch
Flattop Branch
Flattop Branch
Penley Branch
Unnamed Tributary to
Penley Branch
Unnamed Tributary to
Penley Branch
Sumpter Cabin Creek
Brown Branch
Aho Branch
Dick Green Branch
Moore Branch
From source to Chetola Lake,
Middle Fork South Fork New
River
From source to a point 0.6
mile upstream of dam at
Blowing Rock Water Supply
Reservoir
From a point 0.6 mile
upstream of dam at Blowing
Rock Water Supply
Reservoir to dam at
Blowing Rock Water Supply
Reservoir
From dam at Blowing Rock Raw
Water Supply Reservoir to
Middle Fork South Fork New
River
From source to Middle Fork
South Fork New River
From source to Camp
Catawba Bathing Lake Dam
From Camp Catawba Bathing
Lake Dam to Penley Branch
From source to Middle Fork
South Fork New River
From Brown Branch to Boone
Dam of Appalachian State
University
From source to Middle Fork
South Fork New River
From source to Middle Fork
South Fork New River
From source to Aho Branch
From source to Middle Fork
South Fork New River
1
C;ORW
02/01/93 10
WS-IV;CA:+ 02/01/93 10-1-(1)
WS-IV:+
WS-IV:+
02/01/93 10-1-2-(1)
02/01/93 10-1-2-2
WS-II;Tr,HQW 08/03/92 10-1-2-3-(1)
WS-II;Tr,HQW, 0B/03/92 10-1-2-3-(1.5)
CA
WS-IV;Tr:+ 02/01/93 10-1-2-3-(2)
WS-IV:+ 02/01/93 10-1-2-4
WS-IV,B:+ 02/01/93 10-1-2-4-3-(1)
WS-IV:+ 02/01/93 10 1 2 4 3 (2)
WS-IV:+ 02/01/93 10-1-2-5
11111101111111111.1. 02/01/93 10-1-2-(6)
WS-IV;Tr:+ 02/01/93 10-1-2-7
WS-IV;Tr:+ 02/01/93 10-1-2-8
WS-IV;Tr:+ 02/01/93 10-1-2-8-1
WS-IV;Tr:+ 02/01/93 10-1-2-9

NC DENR - DIVISON OF WATER QUALITY
.0307 NEW RIVER BASIN
2B .0300
Classification
Name of Stream Description Class Date Index No.
Little River (North Carolina From N.C. Hwy. 18 Bridge C;HQW 08/01/90 10-9-(11.5)
Portion) to North Carolina -Virginia
State Line
Crab Creek
From source to Little River C;Tr 05/15/63 10-9-12
West Fork Chestnut Creek From source to North C 05/15/63 10-10-1
Carolina -Virginia State Line
(Tributary to Chestnut
Creek)
This symbol identifies waters that are subject to a special management strategy specified in 15A NCAC 2B
.0225 the Outstanding Resource Waters (ORW) rule, in order to protect downstream waters designated as
ORW.
Note: "CA" means critical area.
(Prz7---
11

EN(;•,,r
Attachment A. Local Government Review Fo AUG 7
map
General Statute Overview: North Carolina General Statute 143-215.1 (c)(6) allows input from local go - j -nts in the issuance
of NPDES Permits for non -municipal domestic wastewater treatment facilities. Specifically, the Enviro
Commission (EMC) may not act on an application for a new non -municipal domestic wastewater discharge fa it has
received a written statement from each city and county government having jurisdiction over any part of the lands on which the
proposed facility and its appurtenances are to be located. The written statement shall document whether the city or county has a
zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is consistent with the
ordinance. The EMC shall not approve a permit application for any facility which a city or county has determined to be
inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to have statewide
significance and is in the best interest of the State.
Instructions to the Applicant: Prior to submitting an application for a NPDES Permit for a proposed facility, the applicant
shall request that both the nearby city and county government complete this form. The applicant must:
• Submit a copy of the permit application (with a written request for this form to be completed) to the clerk of the city and
the county by certified mail, return receipt requested.
• If either (or both) local government(s) fail(s) to mail the completed form, as evidenced by the postmark on the certified
mail card(s), within 15 days after receiving and signing for the certified mail, the applicant may submit the application to
the NPDES Unit.
• As evidence to the Commission that the local government(s) failed to respond within 15 days, the applicant shall submit a
copy of the certified mail card along with a notarized letter stating that the local government(s) failed to respond within the
15-day period.
Instructions to the Local Government: The nearby city and/or county government which may have or has jurisdiction over
any part of the land on which the proposed facility or its appurtenances are to be located is required to complete and return this
form to the applicant within 15 days of receipt. The form must be signed and notarized.
Name of local government w ��' a ►. S al O c.`vL C.
N
y�
(City/County)
Does the city/county have jurisdiction over any part of the land on which the proposed facility and its appurtenances are to be
located? Yes 1X1 No [ ] If no, please sign this form, have it notarized, and return it to the applicant.
Does the city/gg= have in effect a zoning or subdivision ordinance? Yes [[j' No [ ]
If there is a zoning or subdivision ordinance in effect, is the plan for the proposed facility consistent with the ordinance? Yes [�.r
No [ ] / �\
Date
Signature
(City Manager/Countv Manager)
State of 9 or+ -If. aunt un t i n A_ , County of V
On this 1 day of 0s} 2 personally appeared before me, the said
name n1 pn—('Sr- S . -6on "``/// \ {' • to me known and known to me to be the person described in
and who executed the foregoing document and he (or she) acknowledged that he (or she) executed the same and being duly sworn
by me, made oath that the statements innthe foregoing document are true.
My Commission expires 0 on 2 1611 a O t 1 .(Signature of Notary Publi
Not Public (0 1 Seal)
EAA Guidance Document Version: June 23, 2005
Page 8 of 8

cc: Permits and Engineering
Technical Support Branch
Watauga County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: No
To: Western NPDES Permitting Program
Water Quality Section
Attention: MINIONP
Date:12 / 11 /2007
NPDES STAFF REPORT AND RECOMMENDATION
County Watauga
Permit No. NC0032131
PART I - GENERAL INFORMATION
1. Facility and Address: Tweetsie Railroad
300 Tweetsie Railroad Lane
Blowing Rock, NC 28605
2. Date of Investigation: 12/6/2007
3. Report Prepared by: David Russell
C
uEC 1 4 2007
OENR • WATER Dit.LIrY
SOURCE b: . ;,;
4. Persons Contacted and Telephone Number: Mr. Chris Robbins, Executive VP/General
Manager Tweetsie RR 828-264-9061; Mr. Steve Gandy, Ph.D., P.E., Project Manager,
Municipal Engineering, Garner, NC 919-772-5393; Mr. Scott Vasgaard, ORC, 828-297-
6234.
5. Directions to Site: Located on Hwy. 321 between Boone and Blowing Rock.
6. Discharge Points(s), List for all discharge points:
Latitude: 36° 09' 53" Longitude: 81° 38' 47"
°
U.S.G.S. Quad No.:C 12 NW _ U.S.G.S. Quad Name: Boone
7. Site size and expansion area consistent with application?
86 acres.
8. Topography (relationship to flood plain included): Existing system is built on a raised

area above surrouinding floodplain. The WWTP has never been flooded during flood
events.
9. Location of nearest dwelling: The area has scattered business establishments and is
located along a major highway US Hwy. 321.
10. Receiving stream or affected surface waters:
a. Classification "WS-IV"
b. River Basin and Subbasin No.: New Basin 01 (05-07-01)
c. Describe receiving stream features and pertinent downstream uses:Stream flows
thru woodlands with scattered residences. The topo map shows an impoundment
located approximately 1 mile below the discharge, but this impoundment no
longer exists because the dam has been breached.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: MGD (Ultimate Design Capacity)
Requested volume is 0.169250 mgd in permit application. Design capacity o#' w;/ (
proposed units is 0.175 mgd.(5 treatment units at 0.035 mgd each)
b. What is the current permitted capacity of the Waste Water Treatment facility?
0.070 mgd.
c. Actual treatment capacity of the current facility (current design capacity)?
.070 mgd(2- .035 mgd treatment plants)
d. Date(s) of construction activities allowed by previous A/C=s issued in the
previous two years. NA
e. Please provide a description of existing wastewater treatment facilities;There are
two(2) 0.035 plants operated in parallel. Each system has flow equalization, aeration
basin, clarifier, tertiary filter, chlorination/dechlorination and flow measurement.
NPDES Permit Staff Report
Version 10/92
Page 2

f. Proposed Treatment System: Construction of three(3) 0.035 mgd treatment systems,
in addition to the two(2) existing 0.035 mgd each systems, consisting of flow
equalization(one large EQ basin and individual EQ basins for each of the units),aeration
basins, clarifiers, tertiary filters, chlorination/dechlorination and flow measurement. The
total requested permitted flow is 0.169250 mgd(the design flow would be 0.175 mgd)
2. Residuals handling and utilization/disposal scheme: Solids pumped as needed and taken
to Boone WWTP..
PART III - OTHER PERTINENT INFORMATION
1. Special monitoring or limitations (including toxicity) requests: None
2. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge
options available. Please provide regional perspective for each option evaluated.
Spray Irrigation: Approximately 2200 gpd of flow will be used to irrigate flower beds.
Approximately 17000 gpd will be used as toilet reuse water.
Connection to Regional Sewer System: None available
Subsurface: Unsuitable soils/too much wastewater
PART IV - EVALUATION AND RECOMMENDATIONS
Currently, Tweetsie Railroad, a theme park, holds an NPDES permit for 0.070 mgd, the
actual flow averages much less and is seasonal in nature. The existing WWTP consists of two(2)
0.035 mgd package plants. The application requests approval for the construction of three(3)
additional package plants that mirror the existing system. Each system would have an individual
EQ basin, plus a large EQ basin would be constructed for the entire WWTP.
Three construction phases are planned for this 86 acre property. Projects would include
hotels, condos, stores, a family entertainment center, restaurants and the theme park. After the
project is completed, in approximately 5 years, water use is projected to be 188431 gpd. Of this
total 19173 gpd would be used as irrigation for flower beds and toilet reuse water. The
application is for discharge of the remaining flow of 169258 gpd. The application requests
approval to construct three 0.035 mgd package plants. The existing two package plants are
NPDES Permit Staff Report
Version 10/92
Page 3

permitted for 0.070 mgd. The total design capacity would be 0.175 mgd. All the treatment units
would be built initially and at the same elevation as the existing plant. As the flow increases
with the completion of the different phases, the necessary number of treatment units will be
brought on line.
It is recommended the permit be issued and that the flow limit be issued as the total
WWTP's design capacity,of 0.175 mgd.(not 0.169258 mgd)
Signature of report preparer
Water Quality Regional Supervisor
Date
NPDES Permit Staff Report
Version 10/92
Page 4

OPERATION/CONSTRUCTION QA/QC CIVIUSANITARY ENGINEERS
Toya Fields
NC Department of Environment and Natural Resources
Division of Water Quality
NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Ms. Fields,
Engineering
Company, P.A.
9/19/2007
SfP 20 2007
DENR - WATER QUALITY
POINT SOURCE BRANCH
Please find the enclosed copies (3) of the application package for NPDES
volumetric change to the Tweetsie Railroad's Theme Park permit (# NC0032131). Also
included is the resubmittal fee of $215.00. Please note that the overall plans for
Tweetsie Railroad's Theme Park expansions have changed. The expansions include two
hotels, several restaurants, an entertainment center, retail stores, and a 100 slot RV Park.
These improvements are shown in detail on the site maps for Phases I -III (Attachment 6).
We had another Professional Engineer (Gregory Perry, P.E.) from another firm perform a
capacity study for the required sewer volumetric flow rates and have included this work
in the attached report (Attachment 7). Attachment 5 shows the culmination of the flows
for the improvements, recommended reductions and original flow rates at the park.
Please call me with any questions.
Sincerely,
PA
Steven R. Gandy, Ph.D., . . -'
Project Manager
PO Box 97, Gamer, North Carolina 27529 [phone]
PO Box 828, Morehead City, NC 28557 [phone] PO Box 349, Boone, NC 28607 [phone]

June 18, 2007
Mr. Chris Robbins
Tweetsie Railroad
300 Tweetsie Railroad Lane
Blowing Rock, NC 28605
Subject:
Dear Mr. Robbins:
Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
Return of NPDES Permit Application
Return # 2250
Tweetsie Railroad
NPDES Permit # NC0032131
Watauga County
In accordance with Division policy, we must hereby return the enclosed permit application. The
Division has determined that the application is incomplete. Staff's primary concern with this submittal
involves the flow projection that was included in the EAA document.
Table 1 of the EAA shows monthly average and daily maximum flows for 2005, and uses 2003-
2005 data to calculate a "summer month" average for the facility. Division staff also reviewed 2006 DMR
data. In 2006 the daily maximum flow was 0.117 MGD for October 1, 2006 and the highest reported
monthly average value was 0.038 MGD for the month of July. Throughout 2006 there were 8 daily values
reported above 0.070 MGD. Based on this data, 2006 flows were significantly higher than 2003-2005
flows. If 2006 data is an accurate depiction of current conditions at this facility, then the flow projection
included in the EAA may be inadequate to account for future growth. Tweetsie Railroad should include
an analysis of 2006 flow data in any characterization of existing conditions to ensure that existing and
future needs of this facility will be met. Please perform a thorough review of facility data, provide a
discussion of the increase in 2006 flows, and submit a flow projection that includes existing conditions at
this WWTP.
As a separate note, attachment 5 of the EAA document estimates current theme park needs at
29,000 gallons per day. However Table 1 calculates current needs to be 0.0029 MGD, which is equivalent
to 2,900 gallons per day. Division staff spoke with engineer Steve Gandy about this discrepancy. Mr.
Gandy indicated that there was an error and sent a correction to attachment 5. The corrected document
provides a total flow justification for 85,775 gpd. NPDES staff can draft a permit for expansion to 94,290
gpd (to include amounts that were deducted for reuse), but please be aware that since Tweetsie Railroad
is currently permitted for 70,000 gpd, this expansion request would only grant an additional 24,000 gpd
of additional capacity. This is a considerable decrease from the 70,000 gpd expansion that was originally
requested in the July 2006 EAA submittal. NPDES staff still has concerns about whether or not
duplicating the existing treatment train is the most efficient means of treating what may be a relatively
small increase in flows, particularly for a facility that will continue to see significant flow variations
throughout the week as well as on a seasonal basis. However if the permit modification is issued, the
Construction Grants and Loans Section will do a through review of design plans during the ATC process,
and make recommendations on how to best meet the unique needs of this facility.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 0n the Internet at http://www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer
Nor` hCarolina
aurally

Page 2
• Tweetsie Railroad, EAA Retum
As stated in our February 12 return letter, please submit a $215 application fee with your
resubmittal. If you have any questions about this matter, contact Toya Fields of the NPDES Unit staff at
[phone] x 551 or via e-mail at [e-mail].
Sincerely,
LeToya D. Fields
Western NPDES Program
cc: (without attachment)
NPDES permit file
Asheville Regional Office, Surface Water Protection
Larry Horton, Construction Grants and Loans Section
Mr. Steven R. Gandy, PhD. P.E. Municipal Engineering Services Company P.A.
P.O. Box 97
Garner, North Carolina 27529
2

February 12, 2007
Mr. Steven R. Gandy, PhD. P.E.
Municipal Engineering Services Company P.A.
P.O. Box 97
Garner, North Carolina 27529
Subject:
Dear Mr. Gandy:
Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Return of NPDES Permit Application
Return # 2246
Tweetsie Railroad
NPDES Permit # NC0032131
Watauga County
In accordance with Division policy, we must hereby return the enclosed permit application. The
Division has determined that the application is incomplete. If you wish to resubmit this package, please
review our comments and provide a thorough discussion of each item. Many of the following comments
were also listed on the return letter dated September 6, 2006.
The environmental alternatives analysis lacks the following items:
Section 2: Projections of Populations and Flow
➢ Please provide a narrative description of the existing facilities. Attachment #5 presents flow
projections based on various facility types (hotels, restaurants, etc), however it is unclear
from the submittal what features currently exist and what is being planned. Please include a
description of the sources of all existing flows.
➢ Please provide a detailed narrative description of the proposed expansion project, including
the expected construction schedule.
➢ Tweetsie Railroad currently operates a seasonal discharge. The park is open May through
November, and there is no discharge during the winter. Please indicate whether or not the
park will continue its seasonal operation after expansion, or if it will operate year-round.
➢ How many acres does Tweetsie Railroad currently own?
➢ How many acres are currently developed?
➢ How many acres will be developed as part of the expansion project?
➢ Tweetsie Railroad is currently permitted for 70,000 gpd. Flows vary, however maximum
monthly flows are at approximately 55% capacity. Since the flow justification for this
expansion project includes existing facilities, Division staff may take existing flows into
account when reviewing future EAA submittals.
Section 3: Technologically Feasible Alternatives
➢ Is landscape irrigation currently being used at Tweetsie Railroad? If so, please provide a
description of any landscaping features (existing and planned) and an evaluation of the
possibility of utilizing reuse onsite. If this option is technologically feasible, please include a
cost analysis.
Please contact the NPDES unit to schedule a meeting prior to submitting a revised EAA.
Division staff will be available to meet with representatives from Tweetsie Railroad to ensure that the
EAA addresses all concerns before the document is submitted for review.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 0n the Internet at http://www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer
No hCarolina
Alaturally

Page 2
Tweetsie Railroad, EAA Return
Your application fee of $215 will be retained and applied to a re -submittal within 6 months.
However if any other future submittals are incomplete, you will be required to resubmit the application
fee. Please include a copy of this letter with any re -submission. If you have any questions about this
matter, contact Toya Fields of the NPDES Unit staff at [phone] x 551 or via e-mail at
[e-mail].
LeToya D. Fields
Western NPDES Program
cc: (without attachment)
NPDES permit file
Asheville Regional Office, Surface Water Protection
Mr. Chris Robbins Tweetsie Railroad
300 Tweetsie Railroad Lane
Blowing Rock, NC 28605
2

Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Departrnent of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
September 6, 2006
Mr. Steven R. Gandy, PhD. P.E.
Municipal Engineering Services Company P.A.
P.O. Box 97
Garner, North Carolina 27529
Subject: Return of NPDES Permit Application
Return # 2240
Tweetsie Railroad
NPDES Permit # NC0032131
Watauga County
Dear Mr. Gandy:
In accordance with Division policy, we must hereby return the enclosed permit application. The
Division has determined that the application is incomplete. The environmental alternatives analysis lacks
the following items:
Section 2: Projections of Populations and Flow
> Please provide a narrative description of the existing facilities, including information about the
seasonal nature of the discharge.
➢ Please provide a detailed narrative description of the proposed expansion project and the
expected construction schedule.
➢ How many acres are currently owned by Tweetsie Railroad? How many acres are currently
developed? How many acres will be developed as part of the expansion project?
➢ The wastewater flow rates used as flow projections already include margins and safety factors.
Therefore, additional buffer capacity is generally considered unnecessary. If you would like for
us to consider a 20% buffer capacity, please provide additional justification.
Section 3: Technologically Feasible Alternatives
> Alternative A — Connection. Please provide letters from the Town of Boone and the Town of
Blowing Rock indicating whether or not they would consider accepting wastewater flow from
Tweetsie Railroad WWTP. If either Town would consider accepting the wasteflow, please
provide a detailed cost analysis of the connection.
➢ Alternative B - Reuse. Please provide a source and/or breakout of the calculations used to
determine the cost of reuse at the Boone Golf Course.
➢ Please provide a letter from the Boone Golf Course indicating whether or not they would
consider using treated wastewater for irrigation.
➢ Is landscape irrigation being currently used at Tweetsie Railroad? If so, please provide a
description of any landscaping features (existing and planned) and a discussion of whether reuse
could be utilized onsite.
General
➢ Your submittal included Local Government Review Forms from Watauga County and the City of
Boone. Please confirm that Tweetsie Railroad does not fall under the jurisdiction of the Town of
Blowing Rock.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer
No hCarolina
!Qfurally

Since the Division only received one copy of the EAA package (rather than the required three),
we are unable to return a copy. If you wish to reapply for this permit, please incorporate the above -
mentioned issues into a new EAA submittal package.
Please note that Division staff does have access to standard reference materials such as the New
River Basinwide Water Quality Plan. Please do not include complete copies of reference materials
(including the USDA soil survey for Watauga County) in any future submittals.
Your application fee of $215 will be retained and applied to any re -submittals within 6 months.
Please include a copy of this letter with any re -submission. If you have any questions about this matter,
contact Toya Fields of the NPDES Unit staff at [phone] x 551 or via e-mail at [e-mail].
Sincerely,
."7g
LeToya D. Fields
Western NPDES Program
cc: NPDES permit file
Asheville Regional Office, Surface Water Protection
Mr. Chris Robbins Tweetsie Railroad
300 Tweetsie Railroad Lane
Blowing Rock, NC 28605
2

Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
June 28, 2006
Mr. Steven R. Gandy, PhD. P.E.
Municipal Engineering Services Company P.A.
P.O. Box 97
Garner, North Carolina 27529
Subject: Return of Speculative Limits Request
Return # 2238
Tweetsie Railroad
NPDES Permit # NC0032131
Watauga County
Dear Mr. Gandy:
The Division received your request for speculative limits for the Tweetsie Railroad on May
25, 2006. Unfortunately, due to staff availability, the NPDES Unit does not prepare speculative
limits for privately owned facilities. In order to have staff review your expansion request you will
need to submit a modification request including application Form D, a full Engineering Alternatives
Analysis (EAA), and a processing fee in the amount of $215.
Although there is no guarantee that a request for expansion will be granted, there are several
sources that you can check to determine whether or not Division policy would prohibit additional
flows from your facility.
➢ Zero flow policy. Regulation 2B .0206 disallows new discharges of oxygen consuming
wastewater to streams which have no flow under both 7Q10 and 30Q2 conditions. Tweetsie
Railroad does not discharge to a zero flow stream, therefore an expansion would not be
prohibited under this policy.
➢ Stream classification. No new or expanding dischargers are allowed to Outstanding
Resource Waters (ORW). Tweetsie Railroad WWTP discharges to the Middle Fork South
Fork New River, a class WS-IV; Tr + waterbody. The "+" denotes that this waterbody is
subject to a special management strategy to protect downstream ORW waters. This
management strategy does not prohibit new or expanding discharges, however it does
prescribe specific limits of 5 mg/L BOD and 2 mg/L NH3.
➢ Basinwide Water Quality Plan. This discharge is located in the New River Basin, subbasin
05-07-01. Before planning any expansion you should consult the basin plan to determine
whether or not there are any basin -specific restrictions. The New River Basinwide Water
Quality Plan is available on the Division's website at
http: / /www.ncwaterquality.org/basinwide/.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer
N"orthCarolina
,Naturally

Upon receipt of your permit application, an NPDES staff member will review the above
items to determine whether or not a discharge is allowed, evaluate your EAA to determine whether
or not a surface water discharge is the most feasible disposable option, and model the proposed
discharge to determine the appropriate permit limits. More information about this process is
available on our website at http://www.ncwaterquality.org/NPDES/. If you have any questions,
please contact Toya Fields at [phone] x 551 or [e-mail].
Enclosures:
EAA Guidance Document
NPDES Application Form D
cc:
Sincerely,
LeToya D. Fields
Western NPDES Program
NPDES permit file
Asheville Regional Office, Surface Water Protection
2

OPERATION/CONSTRUCTION CIA/QC
Municipal
Services
CIVIUSANITARY ENGINEERS
Engineering
Company, P.A.
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Matt Matthews, Section Chief
1617 Mail Service Center
Raleigh, NC 27699
Mr. Matthews,
Municipal Engineering Services Company PA is requesting a speculative limit
analysis for effluent form the wastewater system at Tweetsie Railroad. We are submitting
the request on behalf and at the bequest of Chris Robbins, Executive VP and General
Manager of Tweetsie Railroad. The Current permit number is NC0032131 and permitted
flow is 0.07 MGD. Current stream Classification is WS IV. The amount required by the
proposed expansion 0.14 MGD and is broken down according to the DWQ literature
values for expected usage based on room, seat, and square footage of the expansion in the
enclosed spreadsheet. I am also enclosing a site layout plan for the Phase I expansion
which gives visual details regarding the expansion. Please let me know if there is
anything else 1 can provide. I am available to answer any questions.
Thank you,
,�1,YSPkD I E
Steven R. Gandy, Ph.D., P.E.
Project Manager
Municipal Engineering Services Company P.A.
P.O. Box 97
Garner, NC 27529
[phone] Phone
[phone] Fax
rD
MAY 2 5 2006
DENR - wAT% ; C! '.LITY
P € ^..::::fi
PO Box 97, Garner, North Carolina 27529 [phone]
PO Box 828, Morehead City, NC 28557 [phone] PO Box 349, Boone, NC 28607 [phone]

Type of
Facility
Unit of
Measurement
Flow Planned Planned
Rates # of Units Flow Rate
Hotel -Guarneri
Hotel -Valley
Restaurant-Hotel-G
Restaurant-Hotel-V
Hotel-G 10 Hotel Pods
Cabins
Cinema
FEC/Waterpark=Pool?
Retail - Valley
Restaurant just over the
covered bridge
Retail closest to 321
Big Box
Theme Park
Room
Room
Seat
Seat
Room w/cooking
Room w/cooking
Seat
Person
1,000 Square feet
of sales area
Seat
1.000 Square feet
of sales area
1,000 Square feet
of sales area
Total usage
20% Buffer Capacity
Total Capacity Needed
120 100
120 150
40 100
40 150
175 40
175 52
5 1000
10 200
120 70
40 200
120 7
120 80
12,000
18,000
4,000
6,000
7,000
9,100
5,000
2,000
gallons/day
gallons/day
gallons/day
gallons/day
gallons/day
gallons/day
gallons/day
gallons/day
8,400 gallons/day
gallons/day
8.000 gallons/day
840 gallons/day
9,600 gallons/day
20.000 gallons/day
109,940 gallons/day
27,485 gallons/day
137,425 gallons/day