NC0035149_Renewal (Application)_20220318

D't
ROY COOPER
Governor
ELIZABETH S.BISER
Q µ
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
March 21, 2022
Seven Devils Resort
Attn: Randy Carter, Facilities Manager
151 Mr. Bish Blvd
Boone, NC 28607
Subject: Permit Renewal
Application No. NC0035149
Seven Devils Resort
Watauga County
Dear Applicant:
The Water Quality Permitting Section acknowledges the March 18, 2022 receipt of your permit renewal application and
supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting
branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely,
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
Noraat En Quality Divise
v WinthstoCn-Salrolina em Dep Regionalrtmen Office 450vironmental West Hanes Mill Road,Suiteionof 300Water Winston-
SRsources
alem.North Carolina 27105
336 7769800

North Carolina
Department of Environmental Quality Modified Application Form 2A
Division of Water Resources Revised March 2021
Modified Application
Form 2A
Minor Sewage Facilities < 0. 1 MGD
and No Pretreatment Program
NPDES Permitting Program RECEIVED
MAR 18 2022
NCDEQIDWRINPDES
Note: Complete this form if your facility is a MINOR new or existing publicly owned treatment works.

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
Form NC Department of Environmental Quality-Application for NPDES Permit to Discharge Wastewater
NPDES MINOR SEWAGE FACILITIES(Before completing this form,please read the instructions.Failure to follow
the instructions may result in denial of the application.)
SECTION 1.BASIC APPLICATION INFORMATION FOR ALL APPLICANTS(40 CFR 122.21(j)(1)and(9))
1.1 Facility name
Seven Devils Resort WWTP
Mailing address(street or P.O.box)
151 Mr.Bish Blvd.
City or town State ZIP code
O Boone NC 28607
w
Contact name(first and last) Title Phone number Email address
Randy Carter Facilities Manager [phone] [e-mail]
Location address(street,route number,or other specific identifier) ❑Same as mailing address
NCSR 1151
U-
City or town State ZIP code
Seven Devils NC 28604
1.2 Is this application for a facility that has yet to commence discharge?
❑ Yes 4 See instructions on data submission ❑r No
requirements for new dischargers.
1.3 Is applicant different from entity listed under Item 1.1 above?
❑ Yes ❑ No 4 SKIP to Item 1.4.
Applicant name
= Applicant address(street or P.O.box)
0
City or town State ZIP code
Contact name(first and last) Title Phone number Email address
.Q
n
a 1.4 Is the applicant the facility's owner,operator,or both?(Check only one response.)
O Owner ❑ Operator ❑ Both
1.5 To which entity should the NPDES permitting authority send correspondence?(Check only one response.)
❑ Facility ❑ Applicant ❑ Facility and applicant
(they are one and the same)
1.6 Indicate below any existing environmental permits.(Check all that apply and print or type the corresponding permit
number for each.)
Existing Environmental Permits
o ❑r NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection
o
water) control)
NC0035149
o ❑ PSD(air emissions) ❑ Nonattainment program(CM) 0 NESHAPs(CM)
c
W
m
❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section ❑ Other(specify)
11.1
404)
Page 1

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
1.7 Provide the collection system information requested below for the treatment works.
Municipality Population Collection System Type Ownership Status
Served Served (indicate percentage)
Seven Devils 400 100 %separate sanitary sewer CI Own ❑ Maintain
Z %combined storm and sanitary sewer CI Own CI Maintain
❑ Unknown 0 Own 0 Maintain
co
o %separate sanitary sewer CIOwn ❑ Maintain
co
combined storm and sanitary sewer ❑ Own 0 Maintain
a 0 Unknown 0 Own ❑ Maintain
a %separate sanitary sewer CIOwn 0 Maintain
C
%combined storm and sanitary sewer ❑ Own 0 Maintain
E 0 Unknown _0 Own CI Maintain
a, %separate sanitary sewer ❑ Own 0 Maintain
,1
rn %combined storm and sanitary sewer 0 Own 0 Maintain
`o 0 Unknown 0 Own ❑ Maintain
Total
d Population
o Served
Separate Sanitary Sewer System Combined Storm and
Sanitary Sewer
Total percentage of each type of ioo % °/°
sewer line(in miles)
' 1.8 Is the treatment works located in Indian Country?
0 El Yes I No
V
c 1.9 Does the facility discharge to a receiving water that flows through Indian Country?
:o
El Yes [] No
1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate
.020 mgd
ro
y Annual Average Flow Rates(Actual)
a tuTwo Years Ago Last Year This Year
-o r4
CO 0.0085 mgd 0.0086 mgd 0.0049 mgd
cm
c Maximum Daily Flow Rates(Actual)
Two Years Ago, Last Year This Year
0.023 mgd 0.031 mgd 0.032 mgd
y 1.11 Provide the total number of effluent discharge points to waters of the State of North Carolina by type.
nTotal Number of Effluent Discharge Points by Type
a Constructed
P'i- Combined Sewer
Treated Effluent Untreated Effluent Bypasses Emergency
h Overflows
0 1
Page 2

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
Outfalls Other Than to Waters of the State of North Carolina
1.12 Does the POTW discharge wastewater to basins,ponds,or other surface impoundments that do not have outlets
for discharge to waters of the State of North Carolina?
❑ Yes ❑✓ No 3 SKIP to Item 1.14.
1.13 Provide the location of each surface impoundment and associated discharge information in the table below.
Surface Impoundment Location and Discharge Data
Average Daily Volume Continuous or Intermittent
Location Discharged to Surface
Impoundment (check one)
❑ Continuous
gpd ❑ Intermittent
❑ Continuous
gpd ❑ Intermittent
❑ Continuous
gpd ❑ Intermittent
2 1.14 Is wastewater applied to land?
A' ❑ Yes 0 No-4 SKIP to Item 1.16.
c 1.15 Provide the land application site and discharge data requested below.
u, Land Application Site and Discharge Data
0
`o Average Daily Volume Continuous or
Location Size Applied Intermittent
to
pp (check one)
0acres 0 Continuous
o gpd ❑ Intermittent
I6 acres d 0 Continuous
o gp 0 Intermittent
acres 0 Continuous
y gpd 0to
Intermittent
1.16 Is effluent transported to another facility for treatment prior to discharge?
o CIYes 0No 3 SKIP to Item 1.21.
1.17 Describe the means by which the effluent is transported(e.g.,tank truck,pipe).
1.18 Is the effluent transported by a party other than the applicant?
❑ Yes ❑ No 4 SKIP to Item 1.20.
1.19 Provide information on the transporter below.
Transporter Data
Entity name Mailing address(street or P.O.box)
City or town State ZIP code
Contact name(first and last) Title
Phone number Email address
Page 3

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort W WTP Modified March 2021
1.20 In the table below,indicate the name,address,contact information,NPDES number,and average daily flow rate of the
receiving facility.
Receiving Facility Data
73 d Facility name Mailing address(street or P.O.box)
2 City or town State ZIP code
0
c.)
0 Contact name(first and last) Title
0
Phone number Email address
o NPDES number of receiving facility(if any) 0 None
y Average daily flow rate mgd
0 1.21 Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do
CD
not have outlets to waters of the State of North Carolina(e.g.,underground percolation,underground injection)?
R ❑ Yes ❑ No 4 SKIP to Item 1.23.
U
c 1.22 Provide information in the table below on these other disposal methods.
Information on Other Disposal Methods
o Disposal Annual Average
-0 Method
Location of Size of Daily Discharge Continuous or Intermittent
c Description Disposal Site Disposal Site Volume (check one)
N
3 acres d ❑ Continuous
o gp ❑ Intermittent
acresgpd ❑ Continuous
❑ Intermittent
acres gpd ❑ Continuous
❑ Intermittent
1.23 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(n)?(Check all that apply.
CD y Consult with your NPDES permitting authority to determine what information needs to be submitted and when.)
CCI
fy ❑ Discharges into marine waters(CWA ❑ Water quality related effluent limitation(CWA Section
Section 301(h)) 302(b)(2))
E Not applicable
1.24 Are any operational or maintenance aspects(related to wastewater treatment and effluent quality)of the treatment works
the responsibility of a contractor?
0 Yes ❑ No+SKIP to Section 2.
1.25 Provide location and contact information for each contractor in addition to a description of the contractor's operational
and maintenance responsibilities.
Contractor Information
Contractor 1 Contractor 2 Contractor 3
c Contractor name
(company name)
Carolina Water Service
c Mailing address P.O.Box 240908
(street or P.O.box)
`0 City,state,and ZIP Charlotte,NC 28224
A code
Contact name(first and Neil Reece
ci last)
Phone number [phone]
Email address ronnie.reece@carolinawaterse
Operational and Plant Operation and
maintenance Maintenance
responsibilities of
contractor
Page 4

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
SECTION 2.ADDITIONAL INFORMATION(40 CFR 122.21(j)(1)and(2))
o Outfalls to Waters of the State of North Carolina
2.1 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
El Yes 0 No 4 SKIP to Section 3.
`0 2.2 Provide the treatment works'current average daily volume of inflow Average Daily Volume of Inflow and Infiltration
and infiltration.
gpd
-0Indicate the steps the facility is taking to minimize inflow and infiltration.
0
0
0 2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for
specific requirements.)
2
o
0
n
El Yes ❑ No
E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information?
3 co
C rn (See instructions for specific requirements.)
� .a
El Yes 0 No
2.5 Are improvements to the facility scheduled?
El Yes 0 No 4 SKIP to Section 3.
Briefly list and describe the scheduled improvements.
0
47,
1.
c
d
E
d
c 2.
E
46
y 3.
d
m
0 4.
-0
2.6 Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Completion for Improvements
03
Affected
4) Scheduled Outfalls Begin End Begin Attainment of
(list outfall Construction Construction Discharge Operational
0 Improvement
(from above) number (MM/DDIYYYY) (MM/DDIYYYY) (MM/DD/YYYY) Level
(MM/DD/YYYY)
CD
1.
r
2.
cn
3.
4.
2.7 Have appropriate permits/clearances concerning other federal/state requirements been obtained?Briefly explain your
response.
El Yes ❑ No ❑ None required or applicable
Explanation:
Page 5

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
SECTION 3.INFORMATION ON EFFLUENT DISCHARGES(40 CFR 122.21(j)(3)to(5))
3.1 Provide the following information for each outfall.(Attach additional sheets if you have more than three outfalls.)
Outfall Number o01 Outfall Number Outfall Number
State North Carolina
County Watauga
City or town Seven Devils
Distance from shore 2 ft. ft. ft
Q
Depth below surface ft. ft. ft.
Average daily flow rate 0.0073 mgd mgd mgd
Latitude 36° 09t 16" ND
Longitude s1° 71 33" VD
3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
cts
❑ Yes 0 No+ SKIP to Item 3.4.
3.3 If so,provide the following information for each applicable outfall.
tn Outfall Number Outfall Number Outfall Number
c
Number of times per year
o discharge occurs
Average duration of each
discharge(specify units)
TO
Average flow of each
discharge mgd mgd mgd
cn Months in which discharge
occurs
3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser?
❑ Yes 0 No+ SKIP to Item 3.6.
3.5 Briefly describe the diffuser type at each applicable outfall.
Q
Outfall Number Outfall Number Outfall Number
N
c Does the treatment works discharge or plan to discharge wastewater to waters of the State of North Carolina from
E = 3.6 one or more discharge points?
d
0 Yes ❑ No+SKIP to Section 6.
Page 6

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
3.7 Provide the receiving water and related information(if known for each outfall.
Outfall Number 001 Outfall Number Outfall Number
Receiving water name Unnamed Tributary
Name of watershed,river,
c or stream system Watauga River
o
n. U.S.Soil Conservation
.L
d Service 14-digit watershed
rm code
Name of state
g management/river basin Watauga River Basin
rn
U.S.Geological Survey
w 8-digit hydrologic
re cataloging unit code
Critical low flow(acute) cfs cfs cfs
Critical low flow(chronic) cfs cfs cfs
Total hardness at critical mg/L of mg/L of mg/L of
low flow CaCO3 CaCO3 CaCO3
3.8 Provide the following information describing the treatment provided for discharges from each outfall.
Outfall Number oot Outfall Number Outfall Number
Highest Level of ❑ Primary 0 Primary 0 Primary
Treatment(check all that 0 Equivalent to 0 Equivalent to 0 Equivalent to
apply per outfall) secondary secondary secondary
0 Secondary 0 Secondary 0 Secondary
❑ Advanced 0 Advanced 0 Advanced
❑ Other(specify) ❑ Other(specify) 0 Other(specify)
c
0
fa_ Design Removal Rates by
o Outfall
en
CI
o BOD5 or CBOD5 85 % %
c
E
r` TSS 85 % % %
®Not applicable ❑Not applicable 0 Not applicable
Phosphorus % %o
®Not applicable 0 Not applicable 0 Not applicable
Nitrogen
% %
Other(specify) 0 Not applicable 0 Not applicable 0 Not applicable
%u %
Page 7

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
3.9 Describe the type of disinfection used for the effluent from each outfall in the table below. If disinfection varies by
season,describe below.
Tablet Chlorinator,Chlorine Contact Chamber,Tablet Dechlorination
d
c
c
0
U
Outfall Number Outfall Number Outfall Number
Disinfection type
N)
d
= Seasons used
d
Dechlorination used? ❑ Not applicable ❑ Not applicable
pp ❑ Not applicable
El Yes El Yes ❑ Yes
❑ No ❑ No ❑ No
3.10 Have you completed monitoring for all Table A parameters and attached the results to the application package?
El Yes ❑ No
3.11 Have you conducted any WET tests during the 4.5 years prior to the date of the application on any of the facility's
discharges or on any receiving water near the discharge points?
❑ Yes ❑r No 4 SKIP to Item 3.13.
3.12 Indicate the number of acute and chronic WET tests conducted since the last permit reissuance of the facility's
discharges by outfall number or of the receiving water near the discharge points.
Outfall Number Outfall Number Outfall Number
Acute Chronic Acute Chronic Acute Chronic
Number of tests of discharge
a water
Number of tests of receiving
water
3.14 Does the POTW use chlorine for disinfection,use chlorine elsewhere in the treatment process,or otherwise have
reasonable potential to discharge chlorine in its effluent?U Gr�tro�'nc 4anu rpct Qecyoro is used ctc ka
❑r Yes 4 Complete Table B,including chlorine. El No 4 Complete Table B,omitting chlorine. Se1A
3.15 Have you completed monitoring for all applicable Table B pollutants and attached the results to this application
package? N I A 402- 1-0 cteSie i
El Yes 0 No FbU J
Have you completed monitoring for all applicable Table D pollutants required by your NPDES permitting authority and
3.18 attached the results to this application package?
❑ Yes 0No additional sampling required by NPDES
permitting authority.
Page 8

NPDES Permit Number Facility Name Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP Modified March 2021
SECTION 6.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
6.1 In Column 1 below,mark the sections of Form 2A that you have completed and are submitting with your application.For
each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note that not
all applicants are required to_provide attachments.
Column 1 Column 2
Section 1:Basic Application
Information for All Applicants ❑ w/variance request(s) ❑ wl additional attachments
❑ Section 2:Additional ❑ wl topographic map ❑ w/process flow diagram
Information ❑ wl additional attachments
wl Table A ❑ w/Table D
E Section 3:Information on ❑ wl Table B ❑ wl additional attachments
Effluent Discharges
❑ wl Table C
d _
c' Section 4:Not Applicable
0
Section 5:Not Applicable
d
U
Section 6:Checklist and
❑ Certification Statement ❑ w/attachments
N
6,2 Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly responsible
for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and
complete.lam aware that there are significant penalties for submitting false information,including the possibility of fine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Randy Carter Facilities Manager
Signature Date signed
3//47/ZOZE__
Page 10

I NPDES Permit Number Facility Name 0uitall Number Modified Application Form 2A
NC0035149 Seven Devils Resort WWTP 001 Modified March 2021
I
TABLE A.EFFLUENT PARAMETERS FOR ALL POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of
Value Units Value Units Method' (include units)
Samples
Biochemical oxygen demand
o BOD5 or 0 CBOD5 41.3 mg/L 6.13 mg/L 156 SM-5210B 2 0 ML
p MDL
(report one)
Fecal coliform 6000 cfu/100mL 2.86 cfu/100mL 156 SM-9222D 1 0 ML
MDL
Design flow rate 0.075 MGD 0.073 MGD Continuous
pH(minimum) 6.6 s/u
pH(maximum) 8.1 s/u
Temperature(winter) N/A N/A N/A N/A N/A •
Temperature(summer) N/A N/A N/A N/A N/A
0 ML
Total suspended solids(TSS) 45 mg/L 2.86 mg/L 156 SM-2540D 2.5 p MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
Page 11