NC0022730_Permit Issuance_19980512

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
May 12, 1998
Mr. Seth Lawless
Town of Beech Mountain
403 Beech Mountain Parkway
Beech Mountain, North Carolina 28604
4
D E
Subject: Issuance of NPDES Permit NCO022730
Grassy Gap WWTP
Watauga County
Dear Mr. Lawless:
The Division received your application for a wastewater discharge permit on March 14, 1997.
Division personnel have reviewed and approved your application. Accordingly, we are forwarding herewith
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 December 6, 1983, and as subsequently amended.
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,
Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. 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. Complete and
submit the enclosed Permit Name / Ownership Change Form if a change in ownership or control of this
discharge occurs. 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 Mack Wiggins at telephone number
[phone], extension 542.
Sincerely,
Original Signed By
David A Goodrich
A. Preston Howard, Jr., P. E.
cc: Central Files
Winston-Salem Regional OfficefWater Quality Section
Mr. Roosevelt Childress, EPA
NPDES Unit
Point Source Compliance Enforcement Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

Permit No. NCO022730
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, '
Town of Beech Mountain
is hereby authorized to discharge wastewater from a facility located at
Grassy Gap WWTP
on Grassy Gap Creek Road.
near Beech Mountain
Watauga County
to receiving waters designated as Grassy Gap Creek in the Watauga 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, 1998.
This permit and authorization to discharge shall expire at midnight on September 30, 2002.
Signed this day May 12, 1998. Original Signed BY
David A. GoodriCh
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NCO022730
SUPPLEMENT TO PERMIT COVER SHEET
Town of Beech Mountain
is hereby authorized to:
1. Continue to operate an existing 0.08 M[GD wastewater treatment facility consisting of an influent
bar screen, flow equalization chamber, dual path aeration basins and clarifiers, chlorine chamber
and dechlorination solution injection located at Grassy Gap WWTP, on Grassy Gap Creek
Road, near Beech Mountain, Watauga County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into Grassy
Gap Creek which is classified Class C waters in the Watauga River Basin.

ROAD CLASSIFICATION
WMARY HIG�WAY =DU`01Y=CHE ARD OR
MARD SURFACE 111�
SECONDARY"G�Ay.
.ARD SURFACE C=300K= LNIMPROVED ROAD
Map# C1 1 NW
Stream Class C
Longitude- 81154'20'
.1
Sub -basin 040901
DischargeClass 01-Domestic..-
Receiving Stream Grassy Gar) Creek
Permit exp. 9/30/2002 Ow 0.08 MGD
SCALE 1:24 000
1 MILE
0 7000 FEET
0 1 KILOMETER
CONTOUR INTERVAL 40 FEET
QUAD LOCATION Town of Beech Mountain
Grassy Gap WWTP
NCO022730
Watauga County

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April I - October 3 1) Permit No. NCO022730
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 20*C**
Total Suspended Residue"
NH3asN
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Discharge
Limitation
Monitoring
Requirement
Measurement
Sample
*Sampl
Monthly Avg.
Weekly Avg. Daily Max
Frequency
Ty-p e
Location
0.080 MGD
Continuous
Recording
I or E
30.0 mg/l
45.0 mg/l
Weekly
Composite
E, 1
30.0 mg/1
45.0 mg/1
Weekly
Composite
E, 1
2.0 mg/l
Weekly
Composite
E
200/100 ml
400 /100 ml
Weekly
Grab
E
28 pg1l
2/Week
Grab
E
Weekly
Grab
E
Semi-annually
Composite
E
Semi-annually
Composite
E
Sample locations: E - Effluent, I - Influent
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value
(85% removal).
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November I - March 3 1) Permit No. NCO022730
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 20*C**
Total Suspended Residue"
NH3asN
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Discharge Limitations
Monthly Ava.
0.080 MGD
30.0 mg/l
30.0 mg/l
4.0 mg/l
200/100 ml
Weekly Ava.
45.0 mg/l
45.0 mg/1
400 1100 ml
Monitoring
Requirement
Measurement
Sample
*Sampi
Daily Max Frequenc
Ty-p e
Location
Continuous
Recording
I or E
Weekly
Composite
E, I
Weekly
Composite
E, I
Weekly
Composite
E
Weekly
Grab
E
28 pg/l 2/Week
Grab
E
Weekly
Grab
E
Semi-annually
Composite
E
Semi-annually
Composite
E
Sample locations: E - Effluent, I - Influent
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shal I not exceed 15% of the respective influent value
(85% removal).
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NCO022730
Summary
This is a permit renewal for a facility discharging 0.04 MGD of wastewater expanding to
0.080 MGD to discharge into Grassy Gap Creek. This facility is currently under an SOC
to expand the facility to 0.080 MGD. The SOC construction deadline is October 31, 1997.
As per Robert Heaton ORC, construction just begun back in March of 1997 and meeting
the SOC deadline is questionable. Permits and Engineering will recommend existing
limitations with monitoring reflective of a class II facility.
Permit Update:
As per the region, this facility has expanded to 0.080 MGD. As a result, Part III Condition
G (Phase Condition) has been deleted. Ammonia limitations apply at the expansion flow,
therefore Part III Condition F (Chronic Toxicity) has been deleted.

." . .. A
Staff Review and Evaluation
NPDES Wastewater Pernlit
FACILITY INFORMATION
Facility
Town of Beech Mountain -Grassy gap VVWTP
NPDES No.
NCO022730
Design Flow (MGD)
0.040 MGD expanding to 0.080 MGD
Facility Class
Il
STREAM CHARACTERISTICS
Stream Name
Grassy Gap Creek
Stream Class
C
Sub -basin
040201
Drainage Area (Mi2)
0.76
S7QlO (cfs)
0.24
W7Q10 (cfs)
0.38
3OQ2 (cfs)
0.52
IWC (%)
34.07
I Proposed Changes I Parameters Affected I Basis for 77nge(s)
Compliance Schedule: ncre
Special Conclition(s): Chronic toxicity pass/fail quarterly. Phase Construction Condition
Permits & Engineering Comments:
This is a permit renewal for a facility discharging 0.04 MGD, of wastewater expanding to 0.080 MGD to
discharge into Grassy Gap Creek. This facility is currently under an SOC to expand the facility to 0.080
MGD. The SOC construction deadline is October 31,1997. As per Robert Heaton ORC, construction just
begun back in March of 1997 and meeting the SOC deadline is questionable. Permits and Engineering
will recommend existing limitations with monitoring reflective of a class U facility.
/ I
Prepared by:
D- . -1 �ts. r 1 " d Recommendations:
g on ce va ua on an
Nt w4UMA)'— 417� ',72��
z
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P/ V� .18� IV
L6 L- I

FEB-2-:-*cq,-: 03:_t FPOM DEHNR Wirston-Salem TO
P. 01
>utr Mr. Lawless:
Authorization to cm- ��ct
WV,rrP/rowIn
Watauga Counof Beech Mountain
ty
Y� letter of request for an Authorization to Construct was re
nd fink, Plans and specj&&tion$ for the subject proj ceived April 11, 1996 by the Division
kuthorbation h; hcreby granted ect have been reviewed and found to be Satisfactory.
for the constfuCtution -of a 0.08 MGD wastewater treatment facility
D)13!stlrig of an influent bar $creen. flow equalization chamber dual Path aeration basins and clarifiers
21orine Vntkic( "'9 d dechlorination solution njection �,ith final discharge Of tMated wastewate'
;to Grasty Gap Vkin Watauga River Basin. r
0-Iffiff-i "%

NCO022730
Residual Chlorine
Ammonia as NH3
(summer)
7010 (CFS)
0.24
7Q10 (CFS)
0.24
DESIGN FLOW (MGD)
0.08
DESIGN FLOW (MGD)
0.08
DESIGN FLOW (CFS)
0.124
DESIGN FLOW (CFS)
0.124
STREAM STID (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVE
0
UPS BACKGROUND LEVI
0.22
IWC (%)
34.07
IWC (%)
34.07
Allowable Concentration (
49.90
Allowable Concentration
2.51
Ammonia as NH3
(winter)
7010 (CFS)
0.38
Fecal Limit
20alloomi
DESIGN FLOW (MGD)
0.08
Ratio of 1.91
DESIGN FLOW (CFS)
0.124
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVI
0.22
IWC (%)
24.60
Allowable Concentration
6.64

NCO022730
Residual Chlorine
Ammonia as NH3
(summer)
7010 (CFS)
0.24
7Q10 (CFS)
0.24
DESIGN FLOW (MGD)
0.04
DESIGN FLOW (MGD)
0.04
DESIGN FLOW (CFS)
0.062
DESIGN FLOW (CFS)
0.062
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVE
0
UPS BACKGROUND LEVI
0.22
lWC (%)
20.53
IWC 1%)
20.53
Allowable Concentration (
82.81
Allowable Concentration
4.02
Ammonia as NH3
(winter)
7Q10 (CFS)
0.38
Fecal Limit
200/100ml
DESIGN FLOW (MGD)
0.04
Ratio of 3.9 :1
DESIGN FLOW (CFS)
0.062
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVI
0.22
lWC (%)
14.03
Allowable Concentration
11.48

PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
POST OFFICE BOX 29535
RALEIGH, NORTH CAROLINA 27626-0535
NOTIFICATION OF INTENT TO ISSUE A STATE NPDr---S PERMIT
On the basis of thorough staff review and application of Article 21 of Chapter 1413, General Statutes of
North Carolina, Public Law 92-500 and other lawful standards and regulations, the North Carolina
Environmental Management Commission proposes to issue a permit to discharge to the persons listed
below effective 3/16/98 and subject to special conditions.
Persons wishing to cornment upon or object to the proposed determinations are invited to submit same in
writing to the above address no later than 3/l/98 . All comments received prior to that date will be
considei ed in the formulation of final determinations regarding the proposed permit. A public meeting may
be held v, here the Director of the Division of Environmental Management finds a significant degree of
public interest in a proposed permit.
A copy of the draft permit is available by writin.- or calling the Division of Environmental Management,
P.O. Box 29535, Raleigh, North Carolina 27626-0535, [phone].
The application and other information may be inspected at these locations during normal office hours.
Copies of the information on file are available upon request and payment of the costs of reproduction.
All such comments or requests regai ding a proposed permit should make reference to the NPDES permit
number listed below.
L2
Date
A. Preston Howard Jr., P.E., Director
Division of Environmental Management
Public notice of intent to issue a State NPDES permit to the following:
1. NPDES No. NCO069761. Town of Beech Mountain, 403 Beech Mountain Parkway, Beech
Mountain, NC 28604 has applied for a perrfrit renewal for a facility located at Pond Creek Wastewater
Treatment Plant, on Locust Ridge Road, near Beech Mountain, Watauga County. The facility discharges
0-40 MGD of treated domestic wastewater from one outfall into Pond Creek, a Class C-Trout stream in the
Watauga River Basin which has a 7Q10 flow of 0.60 cf.q. Dissolved oxygen and total residual chlorine are
water quality limited. For some parameters, the available load capacity of the immediate receiving water
will be consumed. This may affect future water quality based effluent limitations for additional
discbargers within this portion of the watershed.
2. NPDES No. NCO022730. Town of Beech Mountain, 403 Beech Mountain Parkway, Beech
Mountain, NC 28604 has applied for a permit modification to expand its wastewater treatment capacity for
a facility located at Grassy Gap A� WTP. on Grassy Gap Creek Road, near Beech Mountain, Watauga
County. The facility presently dischar_�s 0,040 MGD expanding to 0.080 MGD of treated domestic
wastewater from one outfall into Grassy Gap Creek, a Class C sticain in the Watauga River Basin which
has a 7Q10 flow of 0.24 cfs. Amrnonia is water quality limited. For some parameters, the available load
capacitv ofthe immediate receiving water will be consumed. This may affect future water quality based
C17h1len't lin-ritations for additional dischargers within this portion of the watershed.
/-3/

A. (). EFFLUEN FLIMITAI IONS AND MONITORING REQUIRENffiNTS FINAL
Penrut No. NCO022730
During the period beginning on the effective date of the permit and laming until flow expansion above 0.040 MGD, the Peri-nittee is authorized
to discharge from outfall serial number 00 1. Such discharges shall be liiiiit�d and monitored by the permittee as specified below:
Effluent �haractqrlsfics
Flow
BOD, 5 day, 200C**
Total Suspended Residue—
NH3 as N
Fecal Co6form (geometric mean)
ToLai Residual Chlorine
Temperature
Chronic Toxicity —
Discharge Limitations
Monthly Mg.
0. 0 4 0 IVIGID
30.0 mg/i
30.0 mg/l
200.0/100 ml
* Sample locations: E - Effluent, I - Influent
Weekly Ava.
45.0 rriq�l
45.0 'n)gll
400.0 /100 ml
Monitoring Requirements
Measurerrignt
somple
i$—SMJLI�2
Daily Max Freaveogy
IYJ2-t
Location
Continuous
Recording
I or E
Weekly
Composite
E, I
Weekly
Composite
E, I
21Month
Composite
E
Weekly
Grab
E
28.0 lig/l 2/Week
Grab
E
Weekly
Grab
E
Quarterly
Composite
E
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed I �'% of the respective influent value
(85% removal).
*** Chronic Toxicity (Ceriodaphnia) P/F at 23%; January, April, July and (ktober; See Pan 111, Coad"; "ion F.
The pli shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shah be no discharge oi floating solids or visible foam in other than trace amounts.

r 31) permit No. NCO022730
IONS AND MONITORING REQUIPFMENTS SUMMER (April I - Oct0be authorized to discharge from
A. 0.FFFLUF_NTL21V1ITAT xpiration, the Pertnittee is
above 0.040 MGD and lasting until e
During the period beginning after expansion nd monitored by the pern-tittee as Specified below:
outfall(s) serial number 00 1 - Such discharges shall be limited a
Effluent _—Cher.acteristics
Flow
BOD, 5 day, 200C**
Total Suspended Residue—
NH3asN
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Discharjt__ �jmjtallqns
tAonLWY__AYQ_
0.oBo NGD
30.0 mg/l
30.0 mg/l
2.0 mg/l
200-0/100 ml
45.0 mg/l
45.0 mg/l
400.0 000 m!
Monitoring Requirements
Measurement
Dell M§wx ELtQM9-a9-y
Continuous Recording
28.0 �19/1
Weekly
Weekly
Weekly
Weekly
2/Week
Weekly
Semi-annually
semi-annually
composite
composite
Composite
Grab
Grab
Grab
composite
Composite
-scimple
LQ_g_§_Uq n
I orE
E. I
E, I
E
E
E
E
E
r
Sample locations: E - Effluent, I - Influent tions shall not exceed 150/, of the respective influent value
** The monthly average effluent BOD5 and Total Suspended Residue concentra
(95% removal) - units and shall be monitored weekly at the effluent by grab
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard
sample. solids or visible foam in other than trace amounts -
There shall be no discharge of floating

A. (). EFFLUENT LIMITATIONS AND MONITOR-ING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NCO022731
During the period beginning after expansion above 0.040 MGD and lasting until expiration, the Permittee is authorized to discharge fror
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 200C­
Total Suspended Residue**
NH3 as N
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Discharge Limitations
Monthly Ava.
0.080 IVGD
30.0 mg/I
30.0 mg/I
4.0 mg/I
200.0 /100 ml
45.0 mg/l
45.0 mg/I
400.0 /100 ml
Monitoring Regulremenis
Measurement
$0 MQI12
Daily Mom Freavei
Type
Lociption
Continuous
Recording
I or In
Weekly
Composite
F. I
Weekly
Composite
E, I
Weekly
Composite
E
Weekly
Grab
E
28.0 Iig/l 2/Week
Grab
E
Weekly
Grab
E
Semi-annually
Composite
E
Semi-annually
Composite
E
Sample locations: E - Effluent, I - Influent
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value
(85% removal).
The pH shall not b� less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
Thore shall be no discharge of floating solids or visible foam in other than trace amount,.;.

dmp
Mr. Robert Massengill
NCDEHNR
Construction Grants & Loans
PO Box 29579
Raleigh, NC 27626
Dear Mr. Massengill:
DAVIS - MARTIN POWELL & ASSOCIATES, INC.
ENGINEERING LAND PLANNING - SURVEYING
218GATEWOOD AVENUE - SUITE 102
HIGH POINT, NC 27262
PHONE [phone] - FAX [phone]
,X:0�
September 23, 1997
Re: Town of Beech Mountain
Grassy Gap Wastewater Treatment Plant
DMP Project E-1962 (AL)
E-SRL-T-96-0038
SEP '26
,- roAASTMXTION
ItQW,
,&Wdo
(91V
Please accept this letter as the Engineer's Certificate of Completion for the referenced project.
1, Michael L. Slusher, as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe the construction of the wastewater
treatment facilities project for the Town of Beech Mountain, hereby state that to the
best of my knowledge and abilities, due care and diligence was used in the
observation of the construction and that the project was observed to be constructed
in substantial compliance of the approved plans and specifications for Permit No.
NCO022730.
If you have any questions or comments, please let us know.
MLS/res
c: Mr. Seth Lawless
Very truly yours,
DAVIS-MARTIN-POWELL & ASSOCIATES
ic ell L;.!��Slusher, P.E.
GAD
Winston-Salem Regional Office
File
SEP 3 0 1997
SEAL
20590
46L L SL
POINT SOURCE BRANCH