NC0030473_Renewal (Application)_20220322

;'`T'��.,e STATE o- 1`
ROY COOPER ' _ A'�
Governor
ELIZABETH S.RISER
QUALM v
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
March 23, 2022
Mill Ridge Property Owners Association
Attn: Penny Hodge, Business Manager
PO Box 1167
Banner Elk, NC 28604-1167
Subject: Permit Renewal
Application No. NC0030473
Mill Ridge Development WWTP
Watauga County
Dear Applicant:
The Water Quality Permitting Section acknowledges the March 23, 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,
IktAWi
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
cc: Paul Isenhour-WQ Lab & Operations, Inc.
ec: WQPS Laserfiche File w/application
DE Q NWorthinston-Salem Carolina DeRegionalpartmentOffic ofe Environmental450West QHanesualityMill I DivisionRoad.Suite of Water Resources
300 Winston-Salem North Carolina 27105
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North Carolina
Department of Environmental Quality Modified Application Form 2A
Division of Water Resources Revised March 2021
MILL RIJ
Modified Application
Form 2A
Minor Sewage Facilities < 0. 1 MGD
and No Pretreatment Program
NPDES Permitting Program
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
NC0030473 MilII Ridge 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 ma 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
Mill Ridge Development WWTP
Mailing address(street or P.O.box)
229 Clubhouse Drive
City or town State ZIP code
Banner Elk NC 28604
Contact name(first and last) Title Phone number Email address
Penny Hodge Administrator [phone] [e-mail]
Location address(street,route number,or other specific identifier) ❑✓ Same as mailing address
f6
LL.
City or town State ZIP code
1.2 Is this application for a facility that has yet to commence discharge?
❑ Yes 4 See instructions on data submission 0 No
requirements for new dischargers.
1.3 Is applicant different from entity listed under Item 1.1 above?
ElYes ❑ No 4 SKIP to Item 1.4.
Applicant name
Water Quality Lab and Operations,Inc.
Applicant address(street or P.O.box)
P.O.Box 1167
City or town State ZIP code
Banner Elk NC 28604
Contact name(first and last) Title Phone number Email address
a Paul Isenhour President [phone] waterqualitylabs@yahoo
n
1.4 Is the applicant the facility's owner,operator,or both?(Check only one response.)
❑ Owner ❑✓ Operator ❑ Both
1.5 To which entity should the NPDES permitting authority send correspondence?(Check only one response.)
❑ Facility 0 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
0 NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection
water) control)
NC0030473
2 ❑ PSD(air emissions) 0 Nonattainment program(CM) ❑ NESHAPs(CM)
rn
❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section 0 Other(specify)
404)
Page 1

' NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 Milli Ridge WWTP Modified March 2021
1.7 Provide the collection system information requested below for the treatment works.
Municipality Population Collection System Type
Served Served (indicate percentage) Ownership Status
Resedential 427 no %separate sanitary sewer 0 Own El Maintain
Z Homes %combined storm and sanitary sewer 0 Own ❑ Maintain
d 0 Unknown ❑ Own ❑ Maintain
c %separate sanitary sewer 0 Own ❑ Maintain
o
%combined storm and sanitary sewer ❑ Own ❑ Maintain
0 ❑ Unknown 0 Own 0 Maintain
0. %separate sanitary sewer 0 Own 0 Maintain
G.
0 %combined storm and sanitary sewer ❑ Own 0 Maintain
co ❑ Unknown 0 Own ❑ Maintain
E
%separate sanitary sewer 0 Own ❑ Maintain
N %combined storm and sanitary sewer 0 Own ❑ Maintain
c ❑ Unknown ❑ Own ❑ Maintain
Total 427
0 Population
o Served
Separate Sanitary Sewer System Combined Storm and
Sanitary Sewer
Total percentage of each type of o 0
sewer line(in miles) 100 /o /o
z' 1.8 Is the treatment works located in Indian Country?
C
0 0 Yes 0 No
0
U
1.9 Does the facility discharge to a receiving water that flows through Indian Country?
co
c ❑ Yes 0 No
1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate
0.052 mgd
= y Annual Average Flow Rates(Actual)
v2 Two Years Ago Last Year This Year
CO0:1
0.0238 mgd 0.0370 mgd 0.0306 mgd
Maximum Daily Flow Rates(Actual)
o Two Years Ago Last Year This Year
0.073 mgd 0.08 mgd 0.078 mgd
co 1.11 Provide the total number of effluent discharge points to waters of the State of North Carolina by type.
o Total Number of Effluent Discharge Points by Type
a 0. Constructed
Treated Effluent Untreated Effluent Combined Sewer Bypasses Emergency
.=T Overflows Overflows
0
y I
Ei 1
Page 2

NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 MiIII Ridge 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 4 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 (check one)
Impoundment
O Continuous
gpd ❑ Intermittent
O Continuous
gpd ❑ Intermittent
O Continuous
gpd ❑ Intermittent
w 1.14 Is wastewater applied to land?
❑ Yes ❑ No 4 SKIP to Item 1.16.
Cl) 1.15 Provide the land application site and discharge data requested below.
Q- Land Application Site and Discharge Data
o Continuous or
Location Size Average Daily Volume Intermittent
Applied (check one)
t acres d ❑ Continuous
c gp ❑ Intermittent
acresgpd 0 Continuous
0 Intermittent
❑ Continuous
acres gpd ❑ Intermittent
A 1.16 Is effluent transported to another facility for treatment prior to discharge?
o ❑ Yes ❑✓ No 4 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
NC0030473 Milll Ridge WWTP 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
Facility name Mailing address(street or P.O.box)
w
City or town State ZIP code
0
Contact name(first and last) Title
0
d Phone number Email address
cNPDES number of receiving facility(if any) El None Average daily flow rate mgd
N
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
dnot have outlets to waters of the State of North Carolina(e.g.,underground percolation,underground injection)?
El Yes ElNo 4 SKIP to Item 1.23.
0 1.22 Provide information in the table below on these other disposal methods.
Information on Other Disposal Methods
o Disposal Location of Size of Annual Average Continuous or Intermittent
Method Disposal Site Disposal Site Daily Discharge (check one)
Description Volume
acres gpd ❑ Continuous
❑ Intermittent
0 Continuous
acres gpd ❑ Intermittent
acresgpd ❑ Continuous
0 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.
„ w Consult with your NPDES permitting authority to determine what information needs to be submitted and when.)
❑ Discharges into marine waters(CWA ❑ Water quality related effluent limitation(CWA Section
Section 301(h)) 302(b)(2))
❑r 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?
❑✓ 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 Water Quality Labs
(company name)
o Mailing address P.O.Box 1167
(street or P.O.box)
City,state,and ZIP Banner Elk,NC 28604
code
U Contact name(first and Paul Isenhour
last)
Phone number [phone]
Email address [e-mail]
Operational and Operations&Maintenance
maintenance
responsibilities of
contractor
Page 4

NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 Milll Ridge WWTP Modified March 2021
SECTION 2.ADDITIONAL INFORMATION(40 CFR 122.21(j)(1)and(2))
0 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?
❑ Yes ❑r 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
Indicate the steps the facility is taking to minimize inflow and infiltration.
0
2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for
a specific requirements.)
0
0 ❑ Yes ❑ No
E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information?
o
`� (See instructions for specific requirements.)
— 0
`� ❑ Yes ❑ No
2.5 Are improvements to the facility scheduled?
❑ Yes ❑ No 4 SKIP to Section 3.
Briefly list and describe the scheduled improvements.
0
1.
0
E
2.
w
H 3.
0
U,
4.
R 2.6 Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Completion for Improvements
E Scheduled Affected
Begin End Begin Attainment of
d
Outfalls Operational
o Improvement Construction Construction Discharge
O. (from above) (list outfall (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY) Level
0
number) (MM/DD/YYYY)
1.
CD
s
co
2.
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
NC0030473 Milli Ridge 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
Watauga
R County
City or town Banner Elk
o Distance from shore ft. ft. ft.
Q
Depth below surface ft. ft. ft.
Average daily flow rate 0.0305 mgd mgd mgd
Latitude
Longitude '
3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
o ❑ Yes El No 4 SKIP to Item 3.4.
3.3 If so,provide the following information for each applicable outfall.
Outfall Number Outfall Number Outfall Number
Number of times per year
g discharge occurs
a Average duration of each
discharge(specify units)
oAverage flow of each mgd mgd mgd
discharge
cts
co Months in which discharge
occurs
3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser?
❑� Yes ❑ No 4 SKIP to Item 3.6.
3.5 Briefly describe the diffuser t pe at each applicable outfall.
Outfall Number 001 Outfall Number Outfall Number
a�
Forced Air Diffuser
0
vi 3.6 Does the treatment works discharge or plan to discharge wastewater to waters of the State of North Carolina from
one or more discharge points?
at
w ❑✓ Yes ❑ No+SKIP to Section 6.
Page 6

NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 Milli Ridge WWTP Modified March 2021
3.7 Provide the receiving water and related information(if known)for each outfall.
Outfall Number ow Outfall Number Outfall Number
Receiving water name Watauga River
Name of watershed,river,
0 or stream system Watauga River
0- U.S.Soil Conservation
•L
y Service 14-digit watershed
o code
L
Cli Name of state
g management/river basin Watauga River Basin
rn
U.S.Geological Survey
G) 8-digit hydrologic
CD 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 oo1 Outfall Number Outfall Number
Highest Level of ❑ Primary 0 Primary ❑ Primary
Treatment(check all that 0 Equivalent to 0 Equivalent to ❑ Equivalent to
apply per outfall) secondary secondary secondary
El Secondary 0 Secondary ❑ Secondary
❑ Advanced 0 Advanced 0 Advanced
❑ Other(specify) ❑ Other(specify) 0 Other(specify)
c
0
L Design Removal Rates by
.0 Outfall
t
d
o BOD5 or CBOD5 85 %
d
E
w.
d TSS 85 % %
H
0 Not applicable 0 Not applicable 0 Not applicable
Phosphorus % 1 % %
0 Not applicable 0 Not applicable 0 Not applicable
Nitrogen % % %
Other(specify) 0 Not applicable 0 Not applicable 0 Not applicable
0/0 % %
Page 7

NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 Milli Ridge 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.
0,
UV Disinfection
m
c
.2
0
0 Outfall Number Outfall Number Outfall Number
w
.11 Disinfection type
07
Seasons used
w
Dechlorination used? ❑ Not applicable ❑ Not applicable ❑ Not applicable
❑ Yes ❑ Yes ❑ Yes
❑ No ❑ No ❑ No
3.10 Have you completed monitoring for all Table A parameters and attached the results to the application package?
O Yes El 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 ❑ 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
_ 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? N /4 (lb( i6I419Cfr1 non/
❑ Yes+Complete Table B, including chlorine. ✓❑ No 4 Complete Table B,omitting chlorine.
3.15 Have you completed monitoring for all applicable Table B pollutants and attached the results to this application
package? NM Ave ko c(e61)V) POW
❑ Yes El No
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?
CI Yes No additional sampling required by NPDES
permitting authority.
Page 8

NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 Milli Ridge WWTP Modified March 2021
3.19 Has the POTW conducted either(1)minimum of four quarterly WET tests for one year preceding this permit application
or(2)at least four annual WET tests in the past 4.5 years?
❑ Yes ❑ No 4 Complete tests and Table E and SKIP to
Item 3.26.
3.20 Have you previously submitted the results of the above tests to your NPDES permitting authority?
El Yes ❑ No 4 Provide results in Table E and SKIP to
Item 3.26.
3.21 Indicate the dates the data were submitted to your NPDES permitting authority and provide a summary of the results.
Date(s)Submitted Summary of Results
(MMIDDIYYYY)
v
as
c
co 3.22 Regardless of how you provided your WET testing data to the NPDES permitting authority,did any of the tests result in
toxicity?
D Yes ❑ No 4 SKIP to Item 3,26.
fig 3.23 Describe the cause(s)of the toxicity:
C
c
w
3.24 Has the treatment works conducted a toxicity reduction evaluation?
❑ Yes ❑ No 4 SKIP to Item 3.26.
3.25 Provide details of any toxicity reduction evaluations conducted.
3.26 Have you completed Table E for all applicable outfalls and attached the results to the application package?
El Yes ❑ Not applicable because previously submitted
information to the NPDES permittin• authorit .
Page 9

NPDES Permit Number Facility Name Modified Application Form 2A
NC0030473 Milll Ridge 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 ❑ w/variance request(s) ❑ w/additional attachments
Information for All Applicants
❑ Section 2:Additional ❑ wl topographic map ❑ w/process flow diagram
Information ❑ wl additional attachments
wl Table A ❑ wl Table D
❑ Section 3: Information on ❑ wl Table B ❑ wl additional attachments
Effluent Discharges
❑ w/Table C
cu
R
Section 4:Not Applicable
a
R
Section 5:Not Applicable
d
❑ Section 6:Checklist and w/attachments
Certification Statement
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. I am 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
ea... ,
Signature Date signed
Page 10

NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0030473 Milli Ridge WWTP Modified March 2021
TABLE A. EFFLUENT PARAMETERS FOR ALL POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Methods (include
Value Units Value Units Samples units)
Biochemical oxygen demand
0 ML
o BOD5 or a CBOD5 12.6 mg/L 3.377 mg/L 156 SM-5210B 2 p MDL
(report one)
0 ML
Fecal coliform 300 cfu/100mL 16.385 cfu/100mL 156 SM-9222D 1 O MDL
Design flow rate 0.08 MGD 0.0305 MGD Continuous
pH(minimum) 6.3 s/u
pH(maximum) 8.0 s/u
Temperature(winter) 15.0 Degrees Celsius 8.46 Degrees Celsius 60
Temperature(summer) 22 Degrees Celsius 16.79 Degrees Celsius 84
li ML
Total suspended solids(TSS) 14 mg/L 2.34 mg/L 156 SM-2540D 2.5 l 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