NC0021717_Modification_20220131

Transmittal
Date: Monday, January 24, 2022
Project: Town of Wilkesboro—WWTP Expansion
To: Town of Wilkesboro RECEIVED
Kenneth D. Noland —Town Manager
203 W. Main Street
P. O. Box 1056 N 3 1 2022
Wilkesboro, NC 28697
336.838.3951 NCDEQIDWR/NPDES
From: Wes Bramlett
Subject: Wilkesboro NPDES Permit Expansion Engineering Alternative Analysis
We are sending you: ® Attached ❑ Under separate cover via the following items:
❑ Shop drawings ❑ Prints ❑ Plans
❑ Samples ❑ Specifications ❑ Copy of letter
❑ Change Order ❑ Other:
Copies Date No. Description
3 1/24/2022 NPDES permit renewal expansion request
These are transmitted as checked below:
❑ For your approval ❑ Approved as submitted ❑ Resubmit
❑ For your use ❑ Approved as noted ® Submit
❑ As requested ❑ Returned for corrections ❑ Return
❑ For review/comment ❑ Other:
❑ For bids due ❑ Prints returned after loan to
us
Remarks:
Copy to: Signed: Wes Bramlett
hdrinc.com 100 North Main Street,Suite 1500,Winston-Salem, NC 271 01-401 5
336,955.8250
1

(0--,..., F w"KFSeo TOWN OF WILKESBORO
O "M /de iffoientaths ` yip..
• P.O.Box 1056.203 West Main Street
Wilkesboro,North Carolina 28697
tic` ��b� www.wilkesboronc.org
°�PORA�E� Phone[phone] • Fax[phone]
January 21, 2022 Mr. Michael Montebello I'p
ECENED
Municipal Unit Supervisor, Water Quality Permitting Section y j Z ZO22
Division of Water Resources
1617 Mail Service Center \N�(NPDE'S
Raleigh, North Carolina 27699-1617 ��DE�D
Subject: Major Modification Request for NC0021717
Wilkesboro WWTP Expansion
Wilkes County, NC
Dear Mr. Montebello:
The Town of Wilkesboro (Wilkesboro) respectfully requests that the North Carolina Department
of Environmental Quality's Division of Water Resources (DWR) modify our pending NPDES
permit renewal application to include an expansion request. The renewal application included all
applicable parts of EPA Form 2A. Wilkesboro is proposing to expand the Wilkesboro WWTP to
9 million gallons per day (mgd).
To support this expansion request, Wilkesboro has prepared and attached for your review an
Engineering Alternatives Analysis and Environmental Information Document. The major
modification fee of$1,030 is attached as well. Additional sampling of landfill leachate, as
requested by the Municipal Unit, will be submitted under separate cover once results are
obtained.
This expansion request is critical to Wilkesboro and our continued economic development. As
you may know, we are currently under moratorium for capacity and have immediate needs for
sewer expansion. This modification request is consistent with the speculative limits received
from DWR dated October 28, 2020. Specifically, Wilkesboro is requesting an expanded capacity
of 9 mgd which is less than the 10 mgd limits provided in the October 28, 2020 letter.
As mentioned above, this a very time sensitive issue for Wilkesboro. If you have a need for
additional information or have any questions, please do not hesitate to contact me at (336) 838-
3951, Ext. 1050 or Wes Bramlett, PE with HDR at [phone]. Wilkesboro appreciates your
consideration of this request.
MIKE INSCORE KENNETH D.NOLAND JAMES K.BYRD NELLIE ARCHIBALD RUSSELL F.FERREE
Mayor Town Manager Town Clerk JIMMY HAYES Mayor Pro Tern
[e-mail] ANDREW"ANDY"SOOTS
Council Members
1

Sincerely,
V, A_k,,
Ken Noland, Town Manager
Town of Wilkesboro
Attachments:
Attachment A - Wilkesboro NPDES Permit Expansion Engineering Alternative Analysis
Attachment B - Wilkesboro NPDES Permit Expansion Environmental Assessment
Attachment C - Wilkesboro Sampling Results for PFAS and 1,4-Dioxane

1
1
A
Attachment A — Wilkesboro
NPDES Permit Expansion
Engineering Alternative
Analysis

This intentionallyleft blank.
page

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Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis 14.)
Contents
Town of Wilkesboro
Wastewater Treatment Plant Expansion
Engineering Alternatives Analysis (EAA)
Responsible Agency: NC Department of Environmental Quality
Municipal NPDES Permitting
512 North Salisbury Street
Raleigh, NC 27604
Michael Montebello
919-707-3624 michael.montebello(a�ncdenr.gov
Consultant: HDR Engineering, Inc. of the Carolinas
tttttt
S"cN CAR % 100 North Main Street
/0�0*Ess/0 ( Suite 1500
i 2 4 : Winston-Salem, NC 27101
n '376
4.1 Charles W. Bramlett, PE
�NG1NE ��+; 336-955-8258
[e-mail]
I — 2l
Owner: Town of Wilkesboro
Wastewater Treatment Plant
700 Snyder Street
Wilkesboro, NC 28697
Ken Noland
336-838-3951
knoland(a�wilkesboronc.orq

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis 1.0"Z
Contents
Contents
Contents 1
1 Purpose and Need 1
2 Project Description 1
2.1 Phase 1 — Planning and Permitting Approval 1
2.2 Phase 2 — Preliminary Engineering Report 2
2.3 Phase 3 — Design and Construction 2
3 Population Projections, Design Flows, and Wastewater Characteristics 2
3.1 Residential Population Projections 2
3.2 Municipal Flow Projections 4
p
3.3 Influent Characteristics 5
3.4 Existing Treatment Process 6
4 Evaluation of Alternatives 8
4.1 No Action 8
4.2 Alternative 2: Connection to An Existing Wastewater Treatment Plant 8
4.3 Alternative 3: Land Application 9
4.4 Alternative 4: Wastewater Reuse 10
4.5 Alternative 5: Yadkin River Discharge through the NPDES Program 11
5 References 14
Tables
Table 3.1 Current population data for the Cub Creek WWTP service area 2
Table 3.2 Twenty-year population projections for the Cub Creek WWTP service area 4
Table 3.3 Current flows for the Cub Creek WWTP 4
Table 3.4 Municipal flow projections for the Cub Creek WWTP through 2041 5
Table 3.5 Influent wastewater characteristics to the Cub Creek WWTP from 2018-2021 5
Table 4.1 Nearby wastewater treatment facilities to the Town of Wilkesboro Cub Creek WWTP
and available capacities 8
Table 4.2 Budgetary cost estimate of force main conveying from Wilkesboro, NC to Archie
Elledge WWTP in Winston-Salem, NC 9
Table 4.3 Available markets for non-potable reuse of reclaimed wastewater in proximity to
Wilkesboro, NC 10
Table 4.4 Comparison of Yadkin River monthly average discharge limits 12
Table 4.5 Present worth analysis of Alternative 5: Yadkin River discharge through the NPDES
program 14
1

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis L��
Contents r
Figures
Figure 3.1 Map of the Town of Wilkesboro's collection system and service area (2021) 3
Figure 3.2 Existing process flow diagram at the Cub Creek WWTP 7
Figure 4.1 Proposed plant upgrades at the Cub Creek WWTP 13
Appendices
Appendix A— Existing NPDES Permit NC 0021717
Appendix B—Speculative Limits for Cub Creek WWTP
Appendix C— US Census Population Information
Appendix D— Imposition of Sewer Moratorium Letter
Appendix E—Wilkesboro Cub Creek WWTP Annual Polymer and Energy Costs
2

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis EN
Purpose and Need
1 Purpose and Need
HDR Engineering, Inc. of the Carolinas (HDR) was retained by the Town of Wilkesboro, NC
(Town)to prepare an Engineering Alternatives Analysis (EAA) addressing the expansion of the
Town's Cub Creek Wastewater Treatment Plant (WWTP). An EAA is required with any National
Pollutant Discharge Elimination System (NPDES) permit modification application in accordance
with 15A North Carolina Administrative Code (NCAC) 2H.0105(c)(2). An Environmental
Assessment (EA) has been submitted to North Carolina Department of Environmental Quality
(NCDEQ) also but is currently under review. A Finding of No Significant Impact (FONSI) for the
project has not yet been granted.
2 Project Description
The Town of Wilkesboro is a community located in northwestern North Carolina approximately
60 miles west of Winston-Salem, NC. The project site, which is defined as the location of the
existing facility, and project vicinity is located within the Wilkesboro 24K U.S. Geological Survey
(USGS)topographic quadrangle in Wilkes County, North Carolina (USGS 1993).
The Town owns and operates the Cub Creek WWTP located on Snyder Street in Wilkesboro, at
the confluence of Cub Creek and the Yadkin River. The WWTP operates an activated sludge
process and has a permitted capacity of 4.9 million gallons per day (mgd). The Town is
authorized to discharge treated effluent from the WWTP to the Yadkin River under NPDES
Permit Number NC0021717 (Appendix A). The treatment facility is nearing its permitted
capacity, therefore the Town retained HDR to prepare a Preliminary Engineering Report to
evaluate options for upgrading and expanding the treatment capacity of the Cub Creek WWTP.
The expansion of the Cub Creek WWTP has had three phases:
• Phase 1 — Planning and Requesting Speculative Permit Limits Permitting Approval (April
2020 —October 2020)
• Phase 2 — Preliminary Engineering Report (October 2020—June 2021)
• Phase 3— Design and Construction (January 2022 — Ongoing)
2.1 Phase 1 — Planning and Permitting Approval
NC DEQ has identified speculative effluent permit limits for the Cub Creek WWTP (Appendix B).
The effluent total nitrogen (TN) and total phosphorus (TP) concentrations are subject to change
because the High Rock Lake nutrient criteria limits are currently under development. High Rock
Lake is a reservoir on the Yadkin River and is the second largest lake in North Carolina. It is
currently impaired for chlorophyll-a and turbidity which can cause toxic algae blooms (NCDEQ,
2020). As a result, NCDEQ is currently pursuing a total maximum daily load (TMDL) alternative
strategy (Griffin, 2016). It is difficult to predict the regulatory outcome of this TMDL strategy.
A contributor to nutrient loading in High Rock Lake is the Cub Creek WWTP, which first
discharges to the Yadkin River(CH2M Hill, 2015). In May 2020, HDR and the Town had a
meeting with representations from NCDEQ to discuss permitting the Cub Creek WWTP for
1

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis F��
Population Projections, Design Flows,and Wastewater Characteristics r
expansion. In October 2020, the Town received speculative limits for their expansion from
NCDEQ.
2.2 Phase 2 — Preliminary Engineering Report
Once the Town received speculative permit limits, HDR evaluated options for upgrading and
expanding the treatment capacity of the Cub Creek WWTP and prepared a technical
memorandum providing an analysis and recommendations. Simultaneously, HDR hosted
workshops and meetings with NCDEQ to determine permitting requirements. Last, HDR applied
for various funding sources to fund the plant expansion.
2.3 Phase 3 — Design and Construction
In November 2021, the Town selected Ulliman Schutte through a formal selection process to
serve as construction manager at risk (CMAR)for the plant expansion. This phase is on-going
and includes a collaborative plant design process between the Town, HDR, and Ulliman
Schutte.
3 Population Projections, Design Flows, and
Wastewater Characteristics
To evaluate the sufficiency of the Cub Creek WWTP's design flows to meet the needs for a
20-year planning period, residential population projections were prepared. Additionally,
municipal flow projections (including residential, commercial, and industrial) are presented. This
project did not identify any non-municipal flows, such as new subdivisions, new schools, and
groundwater remediation. A map of the Town's service area is shown in Figure 3.1.
3.1 Residential Population Projections
Table 3.1 Current population data for the Cub Creek WWTP service area
Characteristic Data
U.S. Census place or county Town of Wilkesboro and Moravian Falls
Appendix reference for U.S. Census information: Appendix C
Total population from ACS: 5,207
Persons per square mile in LGU: 457.00
LGU land area (miles2): 11.30
WWTP service area (miles2): 6.8
% of LGU in WWTP service area: 60.18%
Current population in service area: 3,108
2

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis 1 ��
Population Projections,Design Flows,and Wastewater Characteristics J
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Figure 3.1 Map of the Town of Wilkesboro's collection system and service area(2021)
3

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis FN
Population Projections, Design Flows,and Wastewater Characteristics
Table 3.2 Twenty-year population projections for the Cub Creek WWTP service area
Year County LGU Service Area
Population Population Population
2022 70,509 4,484 3,203
2023 70,788 4,502 3,216
2024 71,067 4,520 3,228
2025 71,341 4,537 3,241
2026 71,617 4,555 3,253
2027 71,892 4,572 3,266
2028 72,170 4,590 3,278
2029 72,442 4,607 3,291
2030 72,721 4,625 3,303
2031 72,995 4,642 3,316
2032 73,274 4,660 3,328
2033 73,548 4,678 3,341
2034 73,824 4,695 3,353
2035 74,100 4,713 3,366
2036 74,376 4,730 3,379
2037 74,653 4,748 3,391
2038 74,928 4,765 3,404
2039 75,202 4,783 3,416
2040 75,477 4,800 3,429
2041 75,753 4,818 3,441
3.2 Municipal Flow Projections
Table 3.3 documents the current estimated service area population (between 2017 to 2021) and
calculates the estimated infiltration and inflow (I/I). The Town provided daily municipal and
industrial effluent flow data for the WWTP for 2018 to 2021. Therefore, the maximum month and
peak day flows were calculated using actual plant data. The industrial flow from Tyson Foods to
the Cub Creek WWTP is metered.
Table 3.3 Current effluent flows for the Cub Creek WWTP
Year Service Residential Commercial Industrial Estimated Average Max Peak
Area Flow2 Flow2 Flow3 Ill Daily Month Day
Population Effluent Effluent Effluent
Flow Flow Flow
(MGD) (MGD) (MGD) (MGD) (MGD) (MGD) (MGD)
2017 3,293 0.23 0.049 2.75 1.70 4.73 5.23 8.29
2018 3,187 0.22 0.048 2.54 1.32 4.13 4.53 7.64
2019 3,108 0.22 0.047 2.57 1.61 4.44 5.02 8.26
2020 3,010 0.21 0.045 2.68 1.83 4.77 5.05 8.50
2021 2,917 0.20 0.044 2.43 1.53 4.21 4.80 6.38
Notes:
1. 2017 flow data(in italics)back calculated by determining average peaking factor ratios from previous years.
2. The estimation for residential flow assumes 70 gallons per day per capita(gpcd)and commercial assumes 15 gpcd.
3. Industrial flow is not assumed and is reported from Tyson Foods.
Residential and commercial flows are based on projected residential growth through a 20-year
planning period. The projected residential growth was multiplied by 70 gallons per day per
capita to yield a projected residential flow. The commercial flows are determined by multiplying
the projected residential population by 15 gallons per day per capita. Table 3.4 presents the
4

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis 1.01
Population Projections,Design Flows,and Wastewater Characteristics
projected average daily flows to the Cub Creek WWTP through 2041. These projections support
an average day design flow of 7 MGD to the Cub Creek WWTP.
Table 3.4 Average daily municipal flow projections for the Cub Creek WWTP through 2041
Year Residential flow Commercial flow Industrial flow Total flow
increase per year increase per year increase per year
(gpd) (gpd) (gpd) (gpd)
Plant
Permitted 4,900,000
Capacity
2022 6,668 24,729 981,619 5,913,016
2023 7,555 24,919 1,031,619 5,964,093
2024 8,442 25,109 1,081,619 6,015,171
2025 9,313 25,296 1,131,619 6,066,229
2026 10,191 25,484 1,181,619 6,117,294
2027 11,065 25,671 1,231,619 6,168,356
2028 11,949 25,861 1,281,619 6,219,429
2029 12,814 26,046 1,331,619 6,270,480
2030 13,701 26,236 1,381,619 6,321,557
2031 14,573 26,423 1,431,619 6,372,615
2032 15,460 26,613 1,481,619 6,423,692
2033 16,331 26,800 1,531,619 6,474,750
2034 17,209 26,988 1,581,619 6,525,816
2035 18,086 27,176 1,631,619 6,576,881
2036 18,964 27,364 1,681,619 6,627,947 1
2037 19,845 27,552 1,731,619 6,679,017 1
2038 20,719 27,740 1,781,619 6,730,078
2039 21,590 27,927 1,831,619 6,781,136
2040 22,465 28,114 1,881,619 6,832,198
2041 23,342 28,302 1,931,619 6,883,264
3.3 Influent Characteristics
Influent design criteria were established based on historical influent flows and loads data from
the WWTP and from Tyson Foods. Tyson is the county's largest employer and is based in the
Town of Wilkesboro. The annual average and maximum month influent characteristics between
January 2018 through August 2021 are shown in Table 3.5.
Table 3.5 Influent wastewater characteristics to the Cub Creek WWTP from 2018-2021
Town of Wilkesboro Tyson Foods
Parameter Annual average Maximum month Annual average Maximum month
Flow, mgd 1.0 1.6 3.0 3.2
BOD5, mg/L 201 318 400 535
TSS, mg/L 215 393 150 201
NH3-N, mg/L 17 28 25 28
TKN, mg/L 26 43 60 67
TP, mg/L 4 7 42 47
BOD=biochemical oxygen demand TSS=total dissolved solids NH3-N=ammonia nitrogen
TKN=total Kjeldahl nitrogen TP=total phosphorus
5

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis FN
Population Projections,Design Flows,and Wastewater Characteristics
3.4 Existing Treatment Process
The Cub Creek WWTP was originally constructed in 1965, with several modifications since its
original design and construction. The existing aeration basin was previously operated as an
equalization basin. Directly south of the aeration basin and north of the administration building
were sludge drying beds. Several significant modifications are summarized as follows:
• In 1987, the sludge drying beds were constructed. In approximately 1990, the sludge
drying beds south of the aeration basins were abandoned due to improved dewatering
technologies in the market (Dewberry & Davis, 1997).
• In 1997, Secondary Clarifier 3 and the administration building were added.
• In 2008, a new influent pump station for the Town, a new headworks facility, and a new
RAS pump station were added. Additionally, new floating aerators were added to the
aeration basin, a clarifier splitter box was added, and the aerobic digester aeration
pg
system was completely replaced (Cavanaugh, 2008).
• In the most recent improvements, a fourth secondary clarifier was added east of
Secondary Clarifier 3 and modifications were made to the flow splitter box to
accommodate the fourth clarifier (Cubic Design Group, 2018).
6

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis in)
Population Projections, Design Flows,and Wastewater Characteristics
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Figure 3.2 Existing process flow diagram at the Cub Creek WWTP
7

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis
Evaluation of Alternatives
4 Evaluation of Alternatives
4.1 No Action
The No Action alternative for the Cub Creek WWTP is not considered feasible because it would
not meet immediate and future wastewater treatment needs in the service area. In July 2021,
the Town received a Sewer Line Moratorium from NCDEQ. The moratorium was issued
because in the previous calendar year, the Town's effluent WWTP flow averaged 4.8 MGD
representing 97.2 percent of the plant's current treatment capacity. The plant exceeded the
80/90 Rule, meaning that prior to exceeding 90 percent of the wastewater treatment plant's
capacity, the Town should have had all permits needed for the expansion of the wastewater
treatment plant. To attain compliance with the 80/90 Rule, the Town is required to obtain all
permits and submit plans for the expansion of the wastewater treatment plant system. The No
Action alternative would render the Town unable to comply with state regulations and to grow
their service area in the future. See Appendix D for the Sewer Line Moratorium from NCDEQ.
4.2 Alternative 2: Connection to An Existing Wastewater
Treatment Plant
For Alternative 2, The Town of Wilkesboro would convey approximately 12.3 mgd of peak flows
(4.1 mgd of max month flows) to another WWTP according to 20-year projected growth in the
service area. The closest facility to the Town of Wilkesboro is the North Wilkesboro WWTP. The
North Wilkesboro WWTP has 2.0 mgd of permitted capacity. The plant currently utilizes 1.2 mgd
and has 0.8 mgd of available plant capacity (EPA, 2021). It would not be feasible therefore to
construct a forcemain to the Town of North Wilkesboro since North Wilkesboro's plant would be
able to provide only about one-quarter of the needed capacity in Wilkesboro.
The next closest facility that would have the capacity to treat Wilkesboro's additional flows
would be in Winston-Salem, NC. Winston-Salem/Forsyth County Utilities operates two
wastewater treatment facilities: the Archie Elledge WWTP and the Muddy Creek WWTP with
capacities of 30 mgd and 21 mgd respectively (Table 4.1).
Table 4.1 Nearby wastewater treatment facilities to the Town of Wilkesboro Cub Creek WWTP and available
capacities
Wastewater treatment NPDES Permitted Available Force main length
plant facility name capacity capacity from Wilkesboro
Thurman Street WWTP NC0020761 2 mgd 0.8 mgd 3 miles
(North Wilkesboro)
Town of Yadkinville NC0020338 2.5 mgd 1.5 mgd 32 miles
WWTP
Yadkin Valley Sewer NC0020567 1.8 mgd 0.8 mgd 27 miles
Authority WWTP
Jimmy Smith WWTP NC0020621 4.82 mgd 2.3 mgd 34 miles
Archie Elledge WWTP NC0037834 30 mgd 10 mgd 58 miles
Muddy Creek WWTP NC0050342 21 mgd 6.5 mgd 60 miles
8

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis FyZ
Evaluation of Alternatives
Table 4.2 provides a budgetary level cost-estimate for constructing a forcemain from the Cub
Creek WWTP to the Archie Elledge WWTP.
Table 4.2 Budgetary cost estimate of force main conveying from Wilkesboro, NC to Archie ElledgeWWTP in
9 ry
Winston-Salem, NC
4 Cost item Unit cost(including Quantity Total cost
labor and materials)
Ductile iron piping (24-inch) $930/LF 306,240 LF $284 million
4 Sitework (5%) N/A N/A $14.2 million
General conditions, OH, N/A N/A $35.7 million
mobilization (12%)
' Contractor's fee (15%) N/A N/A $50.1 million
Bonds and insurance (3%) N/A N/A $14.4 million
Contingency (25%) N/A N/A $96.1 million
' Total capital cost $494.6 million
The information presented in Table 4.2 indicates that implementation of a forcemain from
' Wilkesboro to Winston-Salem is cost-prohibitive. Therefore, Alternative 2, connection to an
existing WWTP, is not considered a viable alternative at this time and a present value cost
estimate is not provided.
4.3 Alternative 3: Land Application
With the land application alternative, the Town of Wilkesboro would build an additional 4.1 mgd
WWTP to supplement the existing 4.9 mgd WWTP. The effluent discharge location to the
Yadkin River would be abandoned, and the treated effluent disposal would be diverted to
4 suitable locations for spray irrigation. Land application effluent requirements (15A NCAC 02T
.0505(b)) are less stringent than the speculative limits for the 9 mgd surface water discharge.
With the lower treatment levels, some of the existing facilities could be used with rehabilitation.
This alternative would not result in the relocation of most of the treatment facilities outside of the
floodplain.
A land application alternative would also include the construction of distribution infrastructure,
storage ponds, and irrigation facilities at dedicated land application sites, which would likely be
1 in multiple areas as large tracts of suitable land are not available. These additional facilities
would substantially increase the construction impacts associated with this alternative.
The amount of land necessary for land application was estimated using area soil conditions.
Soils conditions in the area were evaluated using the USDA Web Soil Survey (USDA, 2021) and
information from existing non-discharge permits. The closest facilities with similar soils to
Wilkesboro that land applies is the Weyerhaeuser facility (W00005555) and Wayne Farms—
Elkin Hatchery (WQ0009826) both in Surry County. Loading rates varied from 12 inches to
52 inches per year with 18 of 20 fields permitted at 31.8 inches or less. For this evaluation,
31.8 inches was used as a preliminary loading for alternative evaluation purposes. An effective
useable area of 35 percent was estimated from an evaluation of Weyerhaeuser's facility taking
into account buffers, unusable soils, slopes, etc. Based on a loading rate of 31.8 inches per year
and an effective area of 35 percent, it is estimated that over 10,000 acres would be needed to
9

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis FyZ
Evaluation of Alternatives
be purchased to obtain the needed spray fields. With an assumed land cost of$6,000 per acre
(from tax records in Wilkes County for large parcels), total land costs would exceed $60 million
(total budget of preferred alternative).
This alternative is rejected based on the costs of land. There are substantial costs for
rehabilitating the existing WWTP, construction of additional WWTP capacity, storage facilities,
pumping and conveyance facilities, and irrigation equipment in addition to the land costs.
Operational costs would also increase since the WWTP would still be operated (at a lower
efficiency than the preferred AquaNereda®WWTP), additional energy costs for pumping
effluent to irrigation sites, and irrigation site maintenance. There are also greater construction
impacts.
4.4 Alternative 4: Wastewater Reuse
The Town of Wilkesboro does not currently implement a reclaimed wastewater system at their
wastewater treatment facility. Reuse of treated effluent therefore would be a newly constructed
system with new market partners. To reduce the volume of NPDES surface discharge to the
Yadkin River, the Town of Wilkesboro would require commercial and industrial users of reuse
water year-round.
Under North Carolina regulations, NCAC Article 38 Sections 143-348, reclaimed water can be
used for non-potable purposes including:
• Irrigation of public and private landscapes and turf
• Soil compaction
• Dust control
• Non-potable processes such as concrete production and cooling water
• Industrial and commercial toilet flush and fire prevention systems where there are
separate, non-potable plumbing lines
• Bulk fill stations
• Decorative ponds and fountains
• Street sweeping (not street cleaning)
• Sewer cleaning (not washing)
• Vehicle washing
Table 4.3 Available markets for non-potable reuse of reclaimed wastewater in proximity to Wilkesboro, NC
Use Facility name(s) Approximate consumption
Urban use (irrigation of public parks, ! 1. Memorial Park 0.1 MGD
sporting facilities, private gardens, 2. Smoot Park (43 million gallons per year)
roadsides; street cleaning)' 3. Cub Creek Park
4. Westwood Park
Recreational use (golf course 1. Highland Hills Disc Golf Course 0.4 MGD
irrigation)2 2. Oakwoods Country Club 1 (140 million gallons per year) _
10

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis
Evaluation of Alternatives
Use Facility name(s) Approximate consumption
Agricultural use (food crops not 1 1. Tyson Foods 0.14 MGD
commercially processed; food crops ' (52 million gallons per year)
commercially processed; pasture for
milking animals; fodder; fiber; seed
crops; ornamental flowers;
orchards; hydroponic culture;
aquaculture; greenhouses;
viticulture; industrial uses;
processing water; cooling water;
recirculating cooling towers)3
Approximate total reuse water total per day 0.64 MGD
Notes:
1. Assume park irrigation rate is comparable to that of golf courses in the region.Town of Wilkesboro has 55 acres of land in parks.
2. Highland Hills Golf Course is 27 acres.Oakwoods Country Club is 148 acres.Assume Southeast utilizes 2.4 acre-feet(0.78
million gallons)of water per irrigated acre of grass per year(Lyman,2012).
3. Tyson Foods Inc utilizes 312 million gallons of water per year among 6 processing facilities from recycled/reused wastewater.
Per facility,averages 52 million gallons of reused water per year(Tyson Foods,2019).
The information presented in Table 4.3 indicates that implementation of a reclaimed wastewater
system will not significantly reduce the surface NPDES discharge volume. Wastewater reuse
therefore is not considered a viable alternative at this time and a cost estimate is not provided.
4.5 Alternative 5: Yadkin River Discharge through the NPDES
Program
As previously discussed, HDR developed a preliminary engineering report documenting the
expansion of the Wilkesboro Cub Creek WWTP (HDR, 2021). This document indicated that the
Town would be discharging an additional 4.1 MGD on a maximum month basis to the Yadkin
River. The current Cub Creek WWTP treatment process design was based upon the speculative
limits issued by NCDEQ in October 2020 (Appendix B). These speculative limits are more
stringent than the Town's existing NPDES permit limits and have both TN and TP limits. This
more stringent permit reduces the nutrient loading being discharged into the Yadkin River and
eventually to the High Rock Lake watershed. A comparison of the existing NDPES permit limits
and those proposed in the speculative permit is shown in Table 4.4.
11

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis FOR
Evaluation of Alternatives
Table 4.4 Comparison of Yadkin River monthlyaverage discharge limits
P 9 9
Parameter Yadkin River Yadkin River
(existing NPDES Permit 2015) (speculative Permit 2020)1
Flow, MGD 4.9 9.0
BOD5 (mg/L) 30 21.6
TSS (mg/L) 30 30
NH3-N (mg/L) 21 12.1
TN (lb/year) None 205,476
TP (lb/year) None 109,872
Fecal coliform#CFU/mL 200/100 200/100
The speculative permit received from NCDEQ provides flows and loads at 8 MGD and 10 MGD.A permit scenario was not provided
for 9 MGD.The provided limits presented are the average between the 8 MGD and 10 MGD permit limits.
BOD=biochemical oxygen demand TSS=total dissolved solids NH3-N=ammonia nitrogen
TKN=total Kjeldahl nitrogen TP=total phosphorus
4.5.1 New Infrastructure
Currently the plant discharges treated effluent downstream of the UV disinfection facility through
a gravity outfall to the Yadkin River. Compliance with the TN and TP limits requires a complete
process upgrade. The WWTP currently utilizes an aeration basin with floating surface aerators.
HDR proposes upgrading the biological process to the AquaNereda®aerobic granular sludge
(AGS) process. The AGS process can achieve simultaneous nitrification, denitrification, and
phosphorus removal through a batch reactor process. Additional liquids modifications to the
WWTP will be the addition of flow equalization basins, an upsized influent pump station, new
headworks facility, tertiary disc filtration, and a new UV disinfection facility. The solids process
will remain largely the same through the utilization of aerobic digesters and dewatering units. An
additional thickening step will be included upstream of the aerobic digesters in order to assist in
greater volatile solids reduction and less solids hauled to a landfill. Figure 4.1 shows the
proposed plant upgrades at the Cub Creek WWTP. The yellow basins indicate the AquaNereda
basins and the callouts show the proposed new or modified infrastructure projects.
12

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis EN
Evaluation of Alternatives
•
,+ z, r*.torfolt . ..0t; - .':4111"....ii,7,110,%.„4/7
A . i ,. ® — •
19 r'
.°"'..ate. w�:. r .
1
:. 1
Fn . . ., — . ..., „, . ,
Figure 4.1 Proposed plant upgrades at the Cub Creek WWTP

Wilkesboro NPDES Permit Expansion I Attachment A: Engineering Alternatives Analysis
References
4.5.2 Present Value Analysis
Table 4.5 summarizes the results of the present value of costs analysis (PVCA) of Alternative 5.
Alternative 5 is deemed the only technologically and financially feasible alternative therefore this
was the only PVCA conducted.
The capital costs include:
• Equipment costs
• Labor costs
• Contractor mobilization and overhead
• Bonds and Insurance
• Engineering Fees
• Permitting and administrative fees
The annual recurring costs include:
• Pump station, blowers, flow meters, headworks, UV, and instrumentation maintenance
• Annual electricity costs
• Annual polymer and chemical costs
The intermittent recurringcosts (every10 years) include:
• Concrete repairs on structures
When available, the recurring costs utilized actual plant records (Appendix E). When not
available, previous academic studies were used to estimate annual maintenance costs (EPA,
2014; Fournier, 2021; Novak, 2012; Shriram, 2013; Wendland, 2005; Xylem, 2015).
Table 4.5 Present worth analysis of Alternative 5:Yadkin River discharge through the NPDES program
Capital Replaceme Annual Intermittent Total O&M Total
Costs nt Costs O&M Costs O&M Costs Costs present
worth
Value $59,894,163 $1,900,519 $6,464,717 $509,687 $6,974,404 $68,769,086
5 References
CH2M Hill. (2015). Development of a Screening Tool for Estimating Cost of Nutrient Removal for
Wastewater Treatment Facilities.
EPA. (2014). Environmental and Cost Life Cycle Assessment of Disinfection Options for Municipal
Wastewater Treatment.
https://cfpub.epa.gov/si/si public file download.cfm?p download id=521186
EPA. (2021). Enforcement and Compliance History Online. NPDES Permit NC0020761 Thurman
Street WWTP.
14

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis En
References
Fournier. (2021). The Rotary Press Vs The Screw Press. https://www.fournierdewaterinq.com/rotary-
press/advantages/screw-press/
Griffin, Nick. (2016). How Healthy is High Rock Lake. Yadkin River Keeper.
HDR. (2021). Wilkesboro Cub Creek WWTP Preliminary Engineering Report.
Lyman, Gregory. (2012). How Much Water Does Golf Use and Where Does it Come From?
https://www.usga.orq/content/dam/usga/pdf/Water%20Resource%20Center/how-much-water-does-
golf-use.pdf
NC DEQ. (2020). Speculative Effluent Limits Cub Creek WWTP.
Novak, Kyle. (2012). Dewatering Case Study: Rotary Press Versus Screw Press.
http://www.ohiowea.orq/docs/Wed1300ResDe Dewaterinq Case Study.pdf
Shriram, Manogaran. (2013). Economic Life Cycle Assessment Of Aeration Blowers Used In
Wastewater Treatment Systems.
https://commons.lib.jmu.edu/cgi/viewcontent.cqi?referer=&httpsredir=l&article=1278&context=maste
r201019
Tyson Foods, Inc. (2019). Water Security 2019.
https://www.tysonsustainability.com/cdp/CDP Water Security 2019.pdf
USDA. (2021). Web Soil Survey. https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm
Wendland, Arnd. (2005). Operation Costs of Wastewater Treatment Plants. https://cgi.tu-
harburq.de/—awwweb/wbt/emwater/documents/slides c2.pdf
Xylem. (2015). Life Cycle Costs for Wastewater Pumping Systems.
https://www.xylem.com/siteassets/support/tekniska-rapporter/white-papers-pdf/life-cycle-costs-Icc-
for-wastewater-pumping-systems.pdf
15

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page

Wilkesboro NPDES Permit Expansion I Attachment A:Engineering Alternatives Analysis IE1J
�
Appendices
Appendix A — Existing
NPDES Permit NC 0021717

76
tr. RECEIVED .. _ ' A /5
N C Veit.of ENF 1/li I '
•
JAN ^ 1
PATMCCRORY
,;. 0 G tti01,
Got 0111,1'
mstun-Salem
Regional Office DONALD R. VAN DER VAART
mrdwy
Water Resources S. JAY ZIMMERMAN
ENVIRONMENTAL DUAL ITY
December 21, 2015
Mr. Kenneth D. Noland, Town Manager
Town of Wilkesboro
PO Box 1056
Wilkesboro,North Carolina 28697
Subject: Issuance of NPDES Permit Renewal
Permit No. NC0021717
Cub Creek WWTP
Wilkes County
Class IV Facility
Dear Mr. Noland:
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
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated October 15,2007(or as subsequently amended).
A comment was received from Dustin Colburn,Chief Operator at Cub Creek WWTP, on
December 8,2015. Through further review,the following change was made to the draft
permit sent to you on October 21,2015:
• Components of the Cub Creek Wastewater Treatment Plant(WWTP) in the
Supplement to Permit Cover Sheet have been updated as requested by the Permittee
As identified previously, the renewal permit contains the following significant changes
from your current permit:
• Addition of Mercury Minimization Plan requirement based on multiple effluent sample
result exceedances of 1.0 n L
• Deletion of quarterly effluent monitoring for Copper and Zinc based on Reasonable
Potential Analysis;quarterly monitoring for Copper and Zinc will defer to Long Term
Monitoring Program
• Deletion of instream fecal monitoring requirement
• The requirement to begin reporting discharge monitoring data electronically using the
NCDWR's Electronic Discharge Monitoring Report(eDMR) internet application has
been added to your NPDES permit [See Special Condition A.(7)]
State of North Carolina 1 Environmental Quality'Water Resources
1617 Mail service Center I Raleigh,North Carolina 27699-1617
919 707 9000

For information on eDMR, registering for eDMR and obtaining an eDMR user account,
please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule,please visit the
following web site:
http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
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 the 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
Resources or any other Federal, State,or Local government permits that may be required.
If you have questions concerning this permit,please contact Tim Davis by email
(timothy.b.davis@a,ncdenr.gov)or by phone at(919) 807-6393.
Sin erely,
L°144—
. Jay Zimmerman,P.G.
t 1'Director,Division of Water Resources,NCDEQ
Enclosure: NPDES Permit NC0021717
cc: NPDES Unit
Central Files
Winston Salem Regional Office/Water Quality Program
e-copy:
EPA Region 4
DWR/Water Sciences Section, Carrie Ruhlman
DWR/Aquatic Toxicology Unit, Susan Meadows

Permit No. NC0021717
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1,other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act,as amended,the
Town of Wilkesboro
is hereby authorized to discharge wastewater from a facility located at the
Wilkesboro Wastewater Treatment Plant
700 Snyder Street
Wilkesboro
Wilkes County
to receiving waters designated as the Yadkin River in the Yadkin-Pee Dee 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 February 1, 2016.
This permit and authorization to discharge shall expire at midnight on September 30, 2019.
Signed this day December 21, 2015.
.Jay Zimmerman,P.G.
67 Director,Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 11

Permit No.NC0021717
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.
Town of Wilkesboro
is hereby authorized to: j
1. Continue to operate 4.9 MGD wastewater treatmen
t nt facility consisting of:
• Influent lift station
• Aerated equalization basin
• Aeration basin
• Clarifiers
• Aerated digester
• Ultraviolet disinfection
• Sludg e drying beds
• Sludge screw press
• Flow measurement
Located at the Wilkesboro Wastewater Treatment Plant at 700 Snyder Street,
Wilkesboro, Wilkes County; and
2. After receiving an Authorization to Construct permit from the Division, construct
wastewater treatment facilities not to exceed 6.6 MGD design flow.
3. Discharge from said treatment works at the location specified on the attached map
into the Yadkin River, a class C water in the Yadkin-Pee Dee River Basin.
Page 2 of 11

Permit No. NC0021717
PartI
A. (1)EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Q REMENTS(4.9 MGD)
Beginning on the effective date of this permit and lasting until expansion above 4.9 MGD, the Permittee is
authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored6
by the Permittee as specified below:
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Average Measurement Sample Type 1
Average Frequency l p yp I Sample Location
Flow 4.90 MGD Continuous Recording Influent or Effluent
. BODs, 20°C2 30.0 mg/L 45.0 mg/L Daily Composite Influent,Effluent
Total Suspended Solids2 30.0 mg/L 45.0 mg/L Daily Composite Influent,Effluent
NH3 as N
(April 1-October 31) 21.0 mg/L 35.0 mg/L Daily Composite Effluent
NH3 as N
(November 1-March 31) Daily Composite Effluent
Fecal Coliform 200/100 mL 400/100 mL Daily Grab Effluent
Dissolved Oxygen Daily Grab Effluent
Temperature, °C Daily Grab Effluent
pH Between 6.0 and 9.0 s.u. Daily Grab Effluent
Oil and Grease 30.0 mg/L 45.0 mg/L • Monthly Grab Effluent
Total Nitrogen
(NO2 +NO3 +TKN) Monthly Composite Effluent
Total Phosphorus Monthly Composite Effluent
Chronic Toxicity3 Quarterly Composite Effluent
Dissolved Oxygen Footnote 4 Grab U&D
Temperature4 Footnote 4 Grab U&D
Conductivity4 Footnote 4 Grab U&D
Effluent Pollutant Scan5 Monitor and report Footnote 5 Footnote 5 Effluent
Footnotes:
1. U: upstream at the bridge between North Wilkesboro and Wilkesboro. D: downstream 100 yards below
the outfall.
2. The monthly average effluent BODs and total suspended solids concentrations shall not exceed 15% of
their respective influent value(85%removal).
3. Chronic Toxicity (Ceriodaphnia) P/F @ 3.7%; tests shall be conducted in March, June, September and
December. See Special Condition A. (3).
Page 3 of 11

Permit No. NC0021717
4. Samples shall be collected three times per week during the months of June, July, August and September
and once per week during the remainder of the year. Instream monitoring requirements are waived as long
as the Permittee maintains membership in the Yadkin-Pee Dee River Basin Association(YPDRBA). If the
Permittee ceases membership, then all instream monitoring requirements specified in this permit are
immediately reinstated.
ill 5. The Permittee shall perform three Effluent Pollutant Scans duringthe term of thispermit. See Special
Condition A. (4).
p ial
6. No later than 270 days from the effective date of this permit,begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A. (7).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
•
•
Page 4 of 11

Permit No.NC0021717
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (6.6 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning upon expansion above 4.9 MGD flow and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited
and monitored6 by the Permittee as specified below:
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER
Monthly I Weekly Measurement Sample
Average Average Frequency I Type I Sample Location 1
Flow 6.6 MGD Continuous Recording Influent or Effluent
BOD5,20°C2 30.0 mg/L 45.0 mg
/L Daily Composite Influent,Effluent
otal Suspended Solids2 30.0 mg/L 45.0 mg/L Daily Composite Influent,Effluent
NH3 as N
(April 1-October 31) 16.0 mg/L 24.0 mg/L Daily Composite Effluent
NH3 as N
(November 1-March 31) Daily Composite Effluent
Fecal Coliform 200/100 ml 400/100 ml Daily Grab
Effluent
Dissolved Oxygen Daily Grab Effluent
Temperature, °C
Daily Grab
Effluent
pH Between 6.0 and 9.0 s.u. Daily Grab Effluent
Oil and Grease 30.0 mg/L
4
� 5.0 m L
� Monthly Grab Effluent
Total Nitrogen
en
(NO2 +NO3 +TKN) Monthly Composite Effluent
Total Phosphorus Monthly Composite Effluent
Chronic Toxicity3 Quarterly Composite Effluent
Dissolved Oxygen Footnote 4 Grab
U& D
Temperature Footnote 4
Grab U&D
Conductivity4 Footnote 4 Grab
U&D
Effluent Pollutant Scans Monitor and Report Footnote 5 Footnote 5 Effluent
Footnotes:
1. U: upstream at the bridge between North Wilkesboro and Wilkesboro. D: downstream 100 yards below
the outfall.
2. The monthly average effluent BOD5 and total suspended solids concentrations shall not exceed 15% of
their respective influent value(85%removal).
3. Chronic Toxicity (Ceriodaphnia) P/F @ 5.0%; tests shall be conducted March, June, September and
December. See Special Condition A. (3).
4. Samples shall be collected three times per week during the months of June, July,August and September
and once per week during the remainder of the year. Instream monitoring requirements are waived as
Page 5 of 11

Permit No.NC0021717
long as the Permittee maintains membership in the Yadkin-Pee Dee River Basin Association(YPDRBA).
If the Permittee ceases membership, then all instream monitoring requirements specified in this permit
are immediately reinstated.
5. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special
Condition A. (4).
6. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDMR application system. See Special Condition A. (7).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (3)CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibitio
n of reproduction or significant mortality
to Ceriodapfinia dubia at an effluent concentration of 3.7% at 4.9 MGD and 5.0% at 6.6 MGD.
The permit holder shall perform at a minimum,quarterly monitoring using test procedur
es outlined in the
"North Carolina Ceriodaphnia
p a Chronic Effluent Bioassay Procedure,"Revised December 2010,or
subsequent versions "
q or"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure
(Revised-December 2010) or subsequent versions. The tests will be performed during the months of
March,June, September,and December. These months signify the first month of each three-month
toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during
representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge
below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple-concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised-December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1)for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3
(original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh,NC 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete,accurate,include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Page 6 of 11

Permit No. NC0021717
•
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity(AT)test
form indicating the facility name,permit number,pipe number, county,and the month/year of the report
with the notation of"No Flow"in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,monitoring
will be required during the following month. Assessment of toxicity compliance is based on the toxicity
testing quarter,which is the three month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream,this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival,minimum control organism reproduction,and appropriate environmental controls,shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the
last day of the month following the month of the initial monitoring.
•
A. (4)EFFLUENT POLLUTANT SCAN
[G.S. 143-215.1(b)]
The permittee shall perform a total of three(3)Effluent Pollutant Scans for all parameters listed below. One
scan must be performed in each of the following years:2016,2017, and 2018. Analytical methods shall be
in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are
present in concentrations greater than applicable standards and criteria. Samples should be collected with
one quarterly toxicity test each year, and must represent seasonal variation [i.e.,do not sample in the same
quarter every year]. Unless otherwise indicated,metals shall be analyzed as"total recoverable."
Ammonia(as N) Trans-1,2-dichloroethylene Bis(2-chloroethyl)ether
Chlorin
e(total residual,TRC) 1,1-dichloroeth lene Bis 2-chloroiso ro 1 ether
( P pY)
Dissolved oxygen 1,2-dichloropropane Bis(2-ethylhexyl)phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus Methyl chloride 4-chlorophenyl phenyl ether
Total dissolved solids Methylene chloride Chrysene
Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate
Antimony Tetrachloroethylene Di-n-octyl phthalate
Arsenic Toluene Dibenzo(a,h)anthracene
Beryllium 1,1,1-trichloroethane 1,2-dichlorobenzene
Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene
Chromium Trichloroethylene 1,4-dichlorobenzene
Copper Vinyl chloride 3,3-dichlorobenzidine
Lead Acid extractable compounds: Diethyl phthalate
Mercury(EPA Method 1631E) P-chloro-m-cresol Dimethyl phthalate
Page 7 of 11

•
Permit No.NC0021717
Nickel 2-chlorophenol 2,4-dinitrotoluene
Selenium 2,4-dichlorophenol 2,6-dinitrotoluene
Silver 2,4-dimethylphenol 1,2-diphenylhydrazine
Thallium 4,6-dinitro-o-cresol Fluoranthene
Zinc 2,4-dinitrophenol Fluorene
Cyanide 2-nitrophenol Hexachlorobenzene
Total phenolic compounds 4-nitrophenol Hexachlorobutadiene
Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene
Acrolein Phenol Hexachloroethane
Acrylonitrile 2,4,6-trichlorophenol Indeno(1,2,3-cd)pyrene
Benzene Base-neutral compounds: Isophorone
Bromoform Acenaphthene Naphthalene
Carbon tetrachloride Acenaphthylene Nitrobenzene
Chlorobenzene Anthracene N-nitrosodi-n-propylamine
Chlorodibromomethane Benzidine N-nitrosodimethylamine
Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine
2-chloroethylvinyl ether Benzo(a)pyrene Phenanthrene
Chloroform 3,4 benzofluoranthene Pyrene
Dichlorobromomethane Benzo(ghi)perylene 1,2,4-trichlorobenzene
1,1-d ich loroethane Benzo(k)fluoranthene
1,2-dichloroethane Bis(2-chloroethoxy)methane
Reporting. Test results shall be reported on DWQ Form-A MR-PPA1 (or in a form approved by the
Director)by December 31 st of each designated sampling year. The report shall be submitted to the
following address: NC DEQ/DWR/Central Files, 1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to
additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5). The US
EPA requires four(4)toxicity tests for a test organism other than the test species currently required in this
permit. The multiple species tests should be conducted either quarterly for a 12-month period prior to
submittal of the permit renewal application, or four tests performed at least annually in the four and one
half year period prior to the application. These tests shall be performed for acute or chronic toxicity,
whichever is specified in this permit. The multiple species toxicity test results shall be filed with the
Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh,North Carolina 27699-1623
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal
application to the NPDES Permitting Unit.
Page 8 of 11

Permit No.NC0021717
A. (5)MERCURY MINIMIZATION PLAN(MMP)
[G.S. 143-215.1(b)]
The permittee shall develop and implement a mercury minimization plan during this permit term. The
MMP shall be developed within 180 days of the NPDES Permit Effective Date, and shall be available for
inspection on-site. A sample MMP was developed through a stakeholder review process and has been
placed on the Division website for guidance (http://portal.ncdenr.org/web/wq/swp/ps/npdes, under Model
Mercury Minimization Plan). The MMP should place emphasis on identification of mercury contributors
and goals for reduction. Results shall be summarized and submitted with the next permit renewal.
Performance of the Mercury Minimization Plan will meet the requirements of the TMDL(Total
Maximum Daily Load)for mercury approved by USEPA on October 12, 2012, unless and until a Waste
Load Allocation specific to this facility is developed and this NPDES permit is amended to require further
actions to address the Waste Load Allocation.
A. (6)NUTRIENT REOPENER FOR HIGH ROCK LAKE
[G.S. 143-215.1(b)]
This permit may be reopened and modified to implement nutrient requirements in accordance with any
future TMDL and/or nutrient management strategy for High Rock Lake.
A. (7) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports(DMRs) and
specify that, if a state does not establish a system to receive such submittals,then permittees must submit
DMRs electronically to the Environmental Protection Agency(EPA). The Division anticipates that these
regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting (Supersedes Section D. (2.) and Section E. (5.)(a)1
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
Page 9 of 11

Permit No.NC0021717
electronically using eDMR and will be required to complete the eDMR submission by printing,signing,
and submitting one signed original and a copy of the computer printed eDMR to the following address:
NC DEQ/DWR/Information Processing Unit
ATTENTION: Central Files/eDMR
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access,then a temporary waiver from the NPDES electronic reporting requirements may be granted and
discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1,2, 3)or alternative
forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address
above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted
in writing to the Division for written approval at least sixty (60)days prior to the date the facility would
be required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve(12)
months and shall thereupon expire. At such time,DMRs shall be submitted electronically to the
Division unless the permittee re-applies for and is granted a new temporary waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Regardless of the submission method,the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.)(b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section
B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system,registering for eDMR and obtaining an eDMR user account, please visit the following
web page:
http://portaincdenr.org/web/wq/admin/bog/ipu/edinr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
Page 10of11
III

Permit No. NC0021717
"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
fines and imprisonment for knowing violations."
3. Records Retention (Supplements Section D. (6.)j
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. .
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
Thisperiod maybe extended byrequest of the
q Director at any time [40 CFR 122.41].
•
Page 11 of 11

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P.ermitted.Flow; 4.9 MGD,6.6 MGD Wilkesboro
1
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North Cub Creek WWTP

'PDES Permit Standard Conditions
Page 1 of 18
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
Section A. Definitions
2/Month
Samples arc collected twice per month with at least ten calendar days between sampling events.These samples shall be
representative of the wastewater dis
charged scharged during the sample period.
3/Week
Samples are collected three times per week on three separate calendar days. These samples shall be representative of
the wastewater discharged during the sample period.
Act or"the Act"
The Federal Water Pollution Control Act,also known as the Clean Water Act(CWA),as amended,33 USC 1251,et.
seq.
Annual Average
The arithmetic mean of all"daily discharges"of a pollutant measured during the calendar year. In the case of fecal
coliform,the geometric mean of such discharges.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system,which is
not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However,for purposes of this permit,any
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
Calendar Week
The period from Sunday through the following Saturday.
Calendar Quarter
One of the following distinct periods: January through March,April through June,July through September,and
October through December.
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period.The
Director may designate the most appropriate method(specific number and size of aliquots necessary,the time interval
between grab samples,etc.)on a case-by-case basis. Samples may be collected manually or automatically. Composite
samples may be obtained by the following methods:
(1) Continuous: a single,continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume:a series of grab samples collected at equal time intervals over a 24 hour period
of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection,or
(3) Variable time/constant volume:a series of grab samples of equal volume collected over a 24 hour period with
the time intervals between samples determined by a preset number of gallons passing the sampling point.Flow
measurement between sample intervals shall be determined by use of a flow recorder and totalizer,and the
preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system,or
•
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'DES Permit Standard Conditions
Page 2 of 18
(4) Constant time/constant volume:a series of grab samples of equal volume collected over a 24-hour period at a
constant time interval. Use of this method requires prior approval by the Director.This method may only be
used in situations where effluent flow rates vary less than 15 percent.The following restrictions also apply:
➢ Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters
> Influent samples shall not be collected more than once per hour.
➢ Pcnnittees with wastewater treatment systems whose detention time<24 hours shall collect effluent grab
samples at intervals of no greater than 20 minutes apart during any 24-hour period.
➢ Pennittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent
grab samples at least every six hours; there must be a minimum of four samples during a 24-hour sampling
period.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the
calendar day for purposes of sampling. For pollutants measured in units of mass,the"daily discharge" is calculated as
the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement,the
"daily discharge"is calculated as the average measurement of the pollutant over the day.(40 CFR 122.2;see also
"Composite Sample,"above.)
Daily Maximum
The highest"daily discharge"during the calendar month.
Daily Sampling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations
prevent weekday sampling. If sampling is required for all seven days of the week for any permit parameter(s),that
requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
DWR or"the Division"
The Division of Water Resources, Department of Environment and Natural Resources.
Effluent
Wastewater discharged following all treatment processes from a water pollution control facility or other point source
whether treated or untreated.
EMC
The North Carolina Environmental Management Commission
EPA
The United States Environmental Protection Agency
Facility Closure
Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this
permit to be rescinded.
Geometric Mean
The Nth root of the product of the individual values where N=the number of individual values. For purposes of
calculating the geometric mean,values of"0"(or"<[detection level]")shall be considered= 1.
Grab Sample
Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes. Grab samples can be
collected manually.Grab samples must be representative of the discharge(or the receiving stream, for instream
samples).
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( 1PDES Permit Standard Conditions
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Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA.
Instantaneous flow measurement
The flow measured during the minimum time required for the flow measuring device or method to produce a result in
that instance.To the extent practical,instantaneous flow measurements coincide with the collection of any grab
samples required for the same sampling eriod so that together the samples and flow arc representative of the discharge
P gP c g P P g
during that sampling period.
Monthly Average(concentration limit)
The arithmetic mean of all"daily discharges"of a pollutant measured during the calendar month. In the case of fecal
coliform or other bacterial parameters or indicators,the geometric mean of such discharges.
Permit Issuing Authority
The Director of the Division of Water Resources.
Quarterly Average(concentration limit)
The arithmetic mean of all samples taken over a calendar quarter.
Severe property damage
Substantial physical damage to property,damage to the treatment facilities which causes them to become inoperable,or
substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass.Severe property damage excludes economic loss caused by delays in production.
Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1)of the CWA.
Upset
An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements. An upset dots not include noncompliance caused by
operational error,improperly designed treatment facilities,inadequate treatment facilities,lack of preventive
maintenance,or careless or improper operation.
Weekly Average(concentration limit)
The arithmetic mean of all "daily discharges"of a pollutant measured during the calendar week. In the case of fecal
coliform or other bacterial parameters or indicators,the geometric mean of such discharges.
Section 13. General Conditions
I. Duty to Comply
The Permittee must comply with all conditions of this permit.Any permit noncompliance constitutes a violation of
the CWA and is grounds for enforcement action; for permit termination,revocation and reissuance,or
modification;or denial of a permit renewal application[40 CFR 122.41].
a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a)of the
CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section
405(d)of the CWA within the time provided in the regulations that establish these standards or prohibitions or
standards for sewage sludge use or disposal,even if the permit has not yet been modified to incorporate the
requirement.
b. The CWA provides that any person who violates section[s]301,302,306,307,308,318 or 405 of the Act,or
any permit condition or limitation implementing any such sections in a permit issued under section 402,or any
requirement imposed in a pretreatment program approved under sections 402(aX3)or 402(b)(8)of the Act,is
subject to a civil penalty not to exceed$37,500 per day for each violation. [33 USC 1319(d)and 40 CFR
122.41(a)(2)]
c. The CWA provides that any person who negligently violates sections 301,302,306,307,308,318,or 405 of
the Act,or any condition or limitation implementing any of such sections in a permit issued under section 402
of the Act,or any requirement imposed in a pretreatment program approved under section 402(a)(3)or
402(b)(8)of the Act, is subject to criminal penalties of$2,500 to$25,000 per day of violation,or
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'DES Permit Standard Conditions
Page 4 of 18
imprisonment of not more than 1 year,or both. In the case of a second or subsequent conviction for a negligent
violation,a person shall be subject to criminal penalties of not more than$50,000 per day of violation,or by
imprisonment of not more than 2 years,or both. [33 USC 1319(c)(l)and 40 CFR 122.41(a)(2)]
d. Any person who knowingly violates such sections,or such conditions or limitations is subject to criminal
penalties of$5,000 to$50,000 per day of violation,or imprisonment for not more than 3 years,or both. In the
case of a second or subsequent conviction for a knowing violation,a person shall be subject to criminal
penalties of not more than$100,000 per day of violation,or imprisonment of not more than 6 years,or both.
[33 USC 1319(c)(2)and 40 CFR 122.41(a)(2)]
e. Any person who knowingly violates section 301,302,303,306,307,308,318 or 405 of the Act,or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act,and
who knows at that tune that he thereby places another person in imminent danger of death or serious bodily
injury,shall,upon conviction,be subject to a fine of not more than$250,000 or imprisonment of not more than
15 years,or both. In the case of a second or subsequent conviction for a knowing endangerment violation,a
person shall be subject to a fine of not more than$500,000 or by imprisonment of not more than 30 years,or
both. An organization,as defined in section 309(c)(3)(B)(iii)of the CWA,shall,upon conviction of violating
the imminent danger provision,be subject to a fine of not more than$1,000,000 and can be fined up to
$2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)]
f. Under state law,a civil penalty of not more than$25,000 per violation may be assessed against any person
who violates or fails to act in accordance with the terms,conditions,or requirements of a permit. [North
Carolina General Statutes§ 143-215.6A]
g. Any person may be assessed an administrative penalty by the Administrator for violating section 301,302,
306,307,308,318 or 405 of this Act,or any permit condition or limitation implementing any of such sections
in a permit issued under section 402 of this Act.Administrative penalties for Class 1 violations are not to
exceed$16,000 per violation,with the maximum amount of any Class I penalty assessed not to exceed
$37,500. Penalties for Class 11 violations arc not to exceed$16,000 per day for each day during which the
violation continues,with the maximum amount of any Class II penalty not to exceed$1 77,500. [33 USC
1319(g)(2)and 40 CFR 122.41(a)(3)]
2. Duty to Mitigate
The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this pennit with a reasonable likelihood of adversely affecting human health or the environment[40
CFR 122.41(d)].
3. Civil and Criminal Liability
Except as provided in permit conditions on"Bypassing"(Part II.C.4),"Upsets"(Part 11.C.5)and"Power Failures"
(Part ll.C.7),nothing in this permit shall be construed to relieve the Permittee from any responsibilities,liabilities,
or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act,33 USC
1319. Furthermore,the Permittee is responsible for consequential damages,such as fish kills,even though the
responsibility for effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee
from any responsibilities,liabilities,or penalties to which the Permittee is or may be subject to under NCGS 143-
215.75 et seq.or Section 311 of the Federal Act,33 USG 1321. Furthermore,the Permittee is responsible for
consequential damages,such as fish kills,even though the responsibility for effective compliance may be
temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal property,or any exclusive
privileges,nor does it authorize any injury to private property or any invasion of personal rights,nor any
infringement of Federal,State or local laws or regulations[40 CFR 122.41(g)].
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
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7. Severability
The provisions of this permit are severable. If any provision of this permit,or the application of any provision of
this permit to any circumstances,is held invalid,the application of such provision to other circumstances,and the
remainder of this permit,shall not be affected thereby[NCGS 150B-23].
8. Dutyto Provide Information rmatron
The Permittee shall furnish to the Permit Issuing Authority,within a reasonable time,any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying,revoking and reissuing,or
terminating this permit or to determine compliance with this permit.The Permitter shall also furnish to the Permit
Issuing Authority upon request,copies of records required by this permit[40 CFR 122.41(h)].
9. Duty to Reapply
If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit,the
Permittee must apply for and obtain a new permit[40 CFR 122.41(b)].
10. Expiration of Permit
The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to
discharge beyond the expiration date,the Permittec shall submit such information, forms,and fees as arc required
by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a
later date has been granted by the Director.(The Director shall not grant permission for applications to be
submitted later than the expiration date of the existing permit.)[40 CFR 122.21(d)]Any Permittee that has not
requested renewal at least 180 days prior to expiration,or any Permittee that does not have a permit after the
expiration and has not requested renewal at least 180 days prior to expiration,will subject the Permittee to
enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et.seq.
II. Signatory Requirements
All applications,reports,or information submitted to the Permit IssuingAuthorityshall be signed and certified[40
g
CFR 122.41(k)].
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section,a responsible
corporate officer means: (a)a president,secretary,treasurer or vice president of the corporation in charge
of a principal business function,or any other person who performs similar policy or decision making
functions for the corporation,or(b)the manager of one or more manufacturing,production,or operating
facilities,provided,the manager is authorized to make management decisions which govern the operation
of the regulated facility including having the explicit or implicit duty of making major capital investment
recommendations,and initiating and directing other comprehensive measures to assure long term
environmental compliance with environmental laws and regulations;the manager can ensure that the
necessary systems are established or actions taken to gather complete and accurate information for permit
application requirements;and where authority to sign documents has been assigned or delegated to the
manager in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,respectively;or
(3) For a municipality,State,Federal,or other public agency: by either a principal executive officer or
ranking elected official[40 CFR 122.22].
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be
signed by a person described in paragraph a.above or by a duly authorized representative of that person.A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the overall operation
of the regulated facility or activity,such as the position of plant manager,operator of a well or well field,
superintendent,a position of equivalent responsibility,or an individual or position having overall
responsibility for environmental matters for the company.(A duly authorized representative may thus be
either a named individual or any individual occupying a named position.);and
(3) The written authorization is submitted to the Permit Issuing Authority[40 CFR 122.22]
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c. Changes to authorization: If an authorization under paragraph(b)of this section is no longer accurate because
a different individual or position has responsibility for the overall operation of the facility,a new authorization
satisfying the requirements of paragraph(b)of this section must be submitted to the Director prior to or
together with any reports,information,or applications to be signed by an authorized representative[40 CFR
122.22]
d. Certification.Any person signing a document under paragraphs a.or b.of this section shall make the following
certification[40 CFR 122.22].NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
"!certifr, 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 inqui►y 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 fines and imprisonment for knowing violations."
12. Permit Actions
This permit may be modified,revoked and reissued,or terminated for cause.The filing of a request by the
Permittee for a permit modification,revocation and reissuance,or termination,or a notification of planned changes
or anticipated noncompliance does not stay any permit condition[40 CFR 122.41(f)].
13. Permit Modification,Revocation and Reissuance,or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit,
revoking and reissuing the permit,or terminating the permit as allowed by the laws,rules,and regulations
contained in Title 40,Code of Federal Regulations,Parts 122 and 123;Title 15A of the North Carolina
Administrative Code,Subchapter 02H .0100;and North Carolina General Statute 143.215.1 et.al.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Pei-mince must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division. Failure to pay the fee in a timely manner in accordance with I5A NCAC 02H .0105(b)(2)
may cause this Division to initiate action to revoke the permit.
Section C. Operation and Maintenance of Pollution Controls
I. Certified Operator
Owners of classified water pollution control systems must designate operators,certified by the Water Pollution
Control System Operators Certification Commission(WPCSOCC),of the appropriate type and grade for the
system,and,for each classification must[T 15A NCAC 08G.02011:
a. designate one Operator In Responsible Charge(ORC)who possesses a valid certificate of the type and grade at
least equivalent to the type and grade of the system;
b. designate one or more Back-up Operator(s)in Responsible Charge(Back-up ORCs)who possesses a valid
certificate of the type of the system and no more than one grade less than the grade of the system,with the
exception of no backup operator in responsible charge is required for systems whose minimum visitation
requirements are twice per year;and
c. submit a signed completed"Water Pollution Control System Operator Designation Form"to the Commission
(or to the local health department for owners of subsurface systems)countersigned by the designated certified
operators,designating the Operator in Responsible Charge(ORC)and the Back-up Operator in Responsible
Charge(Back-up ORC):
(1) 60 calendar days prior to wastewater or residuals being introduced into a new system;or
(2) within 120 calendar days following:
receiving notification of a change in the classification of the system requiring the designation of a new
Operator in Responsible Charge(ORC)and Back-up Operator in Responsible Charge(Back-up ORC)
of the proper type and grade;or
➢ a vacancy in the position of Operator in Responsible Charge(ORC)or Back-up Operator in
Responsible Charge(Back-up ORC).
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(3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating
at least one of the responsibilities.
The ORC of each Class I facility(or the Back-up ORC,when acting as surrogate for the ORC)must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system;the treatment
facility must be visited at least weekly
➢ Comply with all other conditions of 15A NCAC 08G .0204.
The ORC of each Class II,Ill and IV facility(or the Back-up ORC,when acting as surrogate for the ORC)must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system;the treatment
facility must be visited at least five days per week,excluding holidays
➢ Properly manage and document daily operation and maintenance of the facility
➢ Comply with all other conditions of 15A NCAC 08G .0204.
2. Proper Operation and Maintenance
The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances)which arc installed or used by the Permittee to achieve compliance with the conditions
of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality
assurance procedures.This provision requires the Permittee to install and operate backup or auxiliary facilities only
when necessary to achieve compliance with the conditions of the permit[40 CFR 122.41(e)].
NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance
of the facility,and all documentation required thereof,whether acting as a contract operator[subcontractor]or a
member of the Permittcc's staff.
3. Need to Halt or Reduce not a Defense
It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit[40 CFR 122.41(c)].
4. Bypassing of Treatment Facilities
a. Bypass not exceeding limitations[40 CFR 122.41(m)(2)]
The Permitter may allow any bypass to occur which does not cause effluent limitations to be exceeded,but
only if it also is for essential maintenance to assure efficient operation. These bypasses arc not subject to the
provisions of Paragraphs b.and c.of this section.
b. Notice[40 CFR 122.41(m)(3)]
(I) Anticipated bypass. If the Permittee knows in advance of the need for a bypass, it shall submit prior notice,
if possible at least ten days before the date of the bypass;including an evaluation of the anticipated quality
and effect of the bypass.
(2) Unanticipated bypass.The Permittee shall submit notice of an unanticipated bypass as required in Part
1LE.6.(24-hour notice).
c. Prohibition of Bypass
(1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass,unless:
(A) Bypass was unavoidable to prevent loss of life,personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass,such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime.This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance;and
(C) The Permittee submitted notices as required under Paragraph b.of this section.
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system-wide collection system
permit associated with the treatment facility.
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(3) The Permit issuing Authority may approve an anticipated bypass,after considering its adverse effects, if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(I)of this section.
5. Upsets
a. Effect of an upset[40 CFR 122.41(n)(2)]: An upset constitutes an affirmative defense to an action brought for
noncompliance with such technology based permit effluent limitations if the requirements of paragraph b.of
this condition are met. No determination made during administrative review of claims that noncompliance was
caused by upset,and before an action for noncompliance,is final administrative action subject to judicial
review.
b. Conditions necessary for a demonstration of upset: Any Permittee who wishes to establish the affirmative
defense of upset shall demonstrate,through properly signed,contemporaneous operating logs,or other relevant
evidence that:
(1)An upset occurred and that the Pcrmittcc can identify the cause(s)of the upset;
(2)The Permittee facility was at the time being properly operated;and
(3)The Permittec submitted notice of the upset as required in Part II.E.6.(b)of this permit.
(4)The Permittee complied with any remedial measures required under Part II.B.2.of this permit.
c. Burden of proof[40 CFR 122.41(nx4)]: The Permittee seeking to establish the occurrence of an upset has
the burden of proof in any enforcement proceeding.
6. Removed Substances
Solids,sludges,filter backwash,or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States except as permitted
by the Commission.The Permittee shall comply with all applicable state and Federal regulations governing the
disposal of sewage sludge,including 40 CFR 503,Standards for the Use and Disposal of Sewage Sludge;40 CFR
Part 258,Criteria For Municipal Solid Waste Landfills;and 15A NCAC Subchapter 2T,Waste Not Discharged To
Surface Waters.The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards(as required by 15A NCAC 02H .0124)to
prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means
of alternate power sources,standby generators or retention of inadequately treated effluent.
Section I). \Ionitorint;and Records
1. Representative Sampling
Samples collected and measurements taken,as required herein,shall be representative of the permitted discharge.
Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the
discharge for the period the sample represents. All samples shall be taken at the monitoring points specified in this
permit and,unless otherwise specified,before the effluent joins or is diluted by any other wastestream,body of'
water,or substance.Monitoring points shall not be changed without notification to and the approval of the Permit
Issuing Authority[40 CFR 122.41(j)1.
2. Reporting
Monitoring results obtained during the previous month(s)shall be summarized for each month and reported on a
monthly Discharge Monitoring Report(DMR)Form(MR 1, 1.1,2,3)or alternative forms approved by the
Director, postmarked no later than the last calendar day of the month following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new
facility,on the last day of the month following the commencement of discharge. Duplicate signed copies of these,
and all other reports required herein,shall be submitted to the following address:
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NC DENR/Division of Water Resources/Water Quality Permitting Section
ATTENTION:Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
3. Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges.The
devices shall be installed,calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device.
The Director shall approve the flow measurement device and monitoring location prior to installation.
Once-through condenser cooling water flow monitored by pump logs,or pump hour meters as specified in Part 1 of
this permit and based on the manufacturer's pump curves shall not be subject to this requirement.
4. Test Procedures
Laboratories used for sample analysis must be certified by the Division.Permittees should contact the Division's
Laboratory Certification Section(919 733-3908 or http://portal.ncdenr.org/web/wq/lab/cert)for information
regarding laboratory certifications.
Facilities whose personnel are conducting testing of field-certified parameters only must hold the appropriate field
parameter laboratory certifications.
Test procedures for the analysis of pollutants shall conform to the EMC regulations(published pursuant to NCGS
143-215.63 et.seq.),the Water and Air Quality Reporting Acts,and to regulations published pursuant to Section
304(g),33 USC 1314,of the CWA(as amended),and 40 CFR 136;or in the case of sludge use or disposal,
approved under 40 CFR 136,unless otherwise specified in 40 CFR 503,unless other test procedures have been
specified in this permit[40 CFR 122.41].
To meet the intent of the monitoring required by this permit,all test procedures must produce minimum detection
and reporting levels that are below the permit discharge requirements and all data generated must be reported down
to the minimum detection or lower reporting level of the procedure. If no approved methods are determined
capable of achieving minimum detection and reporting levels below permit discharge requirements,then the most
sensitive(method with the lowest possible detection and reporting level)approved method must be used.
5. Penalties for Tampering
The CWA provides that any person who falsifies,tampers with,or knowingly renders inaccurate,any monitoring
device or method required to be maintained under this permit shall, upon conviction,be punished by a fine of not
more than$10,000 per violation,or by imprisonment for not more than two years per violation,or by both. If a
conviction of a person is for a violation committed after a first conviction of such person under this paragraph,
punishment is a fine of not more than$20,000 per day of violation,or by imprisonment of not more than 4 years,
or both[40 CFR 122.41].
6. Records Retention
Except for records of monitoring information required by this permit related to the Pennittee's sewage sludge use
and disposal activities,which shall be retained for a period of at least five years(or longer as required by 40 CFR
503), the Permittee shall retain records of all monitoring information,including:
➢ all calibration and maintenance records
> all original strip chart recordings for continuous monitoring instrumentation
➢ copies of all reports required by this permit
➢ copies of all data used to complete the application for this permit
These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement,report or application.This period may be extended by request of the Director at any time[40 CFR
122.41].
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7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit,the Permittee shall record the
following information [40 CFR 122.4I]:
a. The date,exact place,and time of sampling or measurements;
b. The individual(s)who performed the sampling or measurements;
c. The date(s)analyses were performed;
d. The individual(s)who performed the analyses;
e. The analytical techniques or methods used;and
f. The results of such analyses.
8. Inspection and Entry
The Permittee shall allow the Director,or an authorized representative(including an authorized contractor acting as
a representative of the Director),upon the presentation of credentials and other documents as may be required by
law,to;
a. Enter,at reasonable times,upon the Permittee's premises where a regulated facility or activity is located or
conducted,or where records must be kept under the conditions of this permit;
b. Have access to and copy,at reasonable times,any records that must be kept under the conditions of this permit;
c. Inspect at reasonable times any facilities,equipment(including monitoring and control equipment),practices,
or operations regulated or required under this permit;and
d. Sample or monitor at reasonable times,for the purposes of assuring permit compliance or as otherwise
authorized by the CWA,any substances or parameters at any location [40 CFR 122.41(i)].
Section E Reportint; Requirements
I. Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit.The discharge of
any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute
a violation of the permit.
2. Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions
to the permitted facility[40 CFR 122.41(1)].Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29(b);or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged.This notification applies to pollutants subject neither to effluent limitations in the permit,nor to
notification requirements under 40 CFR 122.42(a)(I);or
c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices,and
such alteration,addition or change may justify the application of permit conditions that arc different from or
absent in the existing permit,including notification of additional use or disposal sites not reported during the
permit application process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The Penmittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in noncompliance with the permit[40 CFR 122.41(1)(2)].
4. Transfers
This permit is not transferable to any person without prior written notice to and approval from the Director in
accordance with 40 CFR 122.61.The Director may condition approval in accordance with NCGS 143-215.1, in
particular NCGS 143-215.1(b)(4)b.2.,and may require modification or revocation and reissuance of the permit,or
a minor modification,to identify the new permittee and incorporate such other requirements as may be necessary
under the CWA [40 CFR 122.41(1)(3), 122.61]or state statute.
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5. Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit[40 CFR 122.41(1)(4)].
a. Monitoring results must be reported on a Discharge Monitoring Report(DMR)(See Part II.D.2)or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures
approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate
instrument governing the discharge,the results of such monitoring shall be included in the calculation and
reporting of the data submitted on the DMR.
6. Twenty-four Hour Reporting
a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment.Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances.The written submission
shall contain a description of the noncompliance,and its cause;the period of noncompliance,including exact
dates and times,and if the noncompliance has not been corrected,the anticipated time it is expected to
continue;and steps taken or planned to reduce,eliminate,and prevent reoccurrence of the noncompliance[40
CFR 122.4 l(1)(6)].
b. The Director may waive the written report on a case-by-case basis for reports under this section if the oral
report has been received within 24 hours.
c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at(800)662-7956,[phone] or(919)733-3300.
7. Other Noncompliance
The Permittee shall report all instances of noncompliance not reported under Part 11.E.5 and 6.of this permit at the
time monitoring reports arc submitted. The reports shall contain the information listed in Part II.E.6.of this permit
[40 CFR 122.41(1)(7)].
8. Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application,or submitted
incorrect information in a permit application or in any report to the Director,it shall promptly submit such facts or
information [40 CFR 122.41(I)(8)].
9. Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division
as soon as possible,but in no case more than 24 hours or on the next working day following the occurrence or first
knowledge of the occurrence of any of the following:
a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic,such as the dumping of the contents of a sludge
digester;the known passage of a slug of hazardous substance through the facility;or any other unusual
circumstances.
b. Any process unit failure,due to known or unknown reasons,that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps,aerators,compressors,etc.
c. Any failure of a pumping station,sewer line,or treatment facility resulting in a by-pass without treatment of all
or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence. Also see reporting requirements for municipalities in Part IV.C.2.c.of this permit.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2)or Section 308 of the Federal Act,33
USC 1318,all reports prepared in accordance with the terms shall be available for public inspection at the offices
of the Division.As required by the Act,effluent data shall not be considered confidential. Knowingly making any
false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143-
215.1(b)(2)or in Section 309 of the Federal Act.
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11. Penalties for Falsification of Reports
The CWA provides that any person who knowingly makes any false statement,representation,or certification in
it tobemaintained under thispermit,includingmonitoring
record or other document submitted or required
reports or reports of compliance or noncompliance shall,upon conviction,be punished by a fine of not more than
$25,000 per violation,or by imprisonment for not more than two years per violation,or by both[40 CFR 122.41].
12. Annual Performance Reports
Permittecs who own or operate facilities that primarily collect or treat municipal or domestic wastewater and have
an average annual flow greater than 200,000 gallons per day shall provide an annual report to the Permit Issuing
Authority and to the users/customers served by the Permitter(NCGS 143-215.1 C).The report shall summarize the
performance of the collection or treatment system,as well as the extent to which the facility was compliant with
applicable Federal or State laws,regulations and rules pertaining to water quality.The report shall be provided no
later than sixty days after the end of the calendar or fiscal year,depending upon which annual period is used for
evaluation.
The report shall be sent to:
NC DENR/Division of Water Resources/Water Quality Permitting Section
ATTENTION:Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
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PART III
OTHER REQUIREMENTS
Section .1. Construction
a. The Permittee shall not commence construction of wastewater treatment facilities,nor add to the plant's treatment
capacity,nor change the treatment process(es)utilized at the treatment plant unless(1)the Division has issued an
Authorization to Construct(AtC)permit or(2)the Permittee is exempted from such AtC permit requirements
under Item b.of this Section.
b. In accordance with NCGS 143-215.1(a5)[SL 2011-3941,no permit shall be required to enter into a contract for the
construction,installation,or alteration of any treatment work or disposal system or to construct,install,or alter any
treatment works or disposal system within the State when the system's or work's principle function is to conduct,
treat,equalize,neutralize,stabilize,recycle,or dispose of industrial waste or sewage from an industrial facility and
the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the
industrial waste or sewage into the waters of the State. Notwithstanding the above,the permit issued for the
discharge may be modified if required by federal regulation.
c. Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been
submitted by the Permittee and approved by the Division.
Section II. Groundwater Monitoring
The Permittee shall,upon written notice from the Director,conduct groundwater monitoring as may be required to
determine the compliance of this NPDES permitted facility with the current groundwater standards.
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe(40 CFR 122.42):
a. That any activity has occurred or will occur which would result in the discharge,on a routine or frequent basis,of
any toxic pollutant which is not limited in the permit,if that discharge will exceed the highest of the following
"notification levels";
(1) One hundred micrograms per liter(100 µg/L);
(2) Two hundred micrograms per liter(200 µg/L)for acrolein and acrylonitrile; five hundred micrograms per liter
(500 µg/L)for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol;and one milligram per liter(1 mg/L) for
antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
b. That any activity has occurred or will occur which would result in any discharge,on a non-routine or infrequent
basis,of a toxic pollutant which is not limited in the permit,if that discharge will exceed the highest of the
following"notification levels";
(1) Five hundred micrograms per liter(500 µg/L);
(2) One milligram per liter(1 mg/L)for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
Section I). Facility Closure Requirements
The Permitter must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered
by this permit.The Division may require specific measures during deactivation of the system to prevent adverse
impacts to waters of the State.This permit cannot be rescinded while any activities requiring this permit continue at the
permitted facility.
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PART IV
SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES
Section A. Definitions
In addition to the definitions in Part II of this permit,the following definitions apply to municipal facilities:
Indirect Discharge or Industrial User
Any non-domestic source that discharges wastewater containing pollutants into a POTW regulated under section
307(b),(c)or(d)of the CWA. [40 CFR 403.3(i)and(j)and 15A NCAC 02H .0903(b)(11)]
Interference
Inhibition or disruption of the POTW treatment processes;operations;or its sludge process,use,or disposal which
causes or contributes to a violation of any requirement of the Permittee's(or any satellite POTW's if different from the
Permittee)NPDES,collection system,or non-discharge permit or prevents sewage sludge use or disposal in
compliance with specified applicable State and Federal statutes, regulations,or permits. [15A NCAC 02H
.0903(b)(14)]
Pass Through
A discharge which exits the POTW into waters of the State in quantities or concentrations which,alone or with
discharges from other sources,causes a violation,including an increase in the magnitude or duration of a violation,of
the Permittee's(or any satellite POTW's,if different from the Permittee)NPDES,collection system,or non-discharge
permit. [I5A NCAC 02H.0903(b)(23)]
Publicly Owned Treatment Works(POTWI
A treatment works as defined by Section 212 of the CWA,which is owned by a State or local government organization.
This definition includes any devices and systems used in the storage,treatment,recycling and reclamation of municipal
sewage or industrial wastes of a liquid nature. It also includes the collection system,as defined in 15A NCAC 2T
.0402,only if it conveys wastewater to a POTW treatment plant.The term also means the local government
organization,or municipality,as defined in section 502(4)of the CWA,which has jurisdiction over indirect discharges
to and the discharges from such a treatment works. In this context,the organization may be the owner of the POTW
treatment plant or the owner of the collection system into which an indirect discharger discharges.This second type of
POTW may be referred to as a"satellite POTW organization."[15A NCAC 02H .0903(b)(26)]
"Significant Industrial User"or"SIU"
An Industrial User that discharges wastewater into a publicly owned treatment works and that[15A NCAC 02H
.0903(b)(33)]:
1. Discharges an average of 25,000 gallons per day or more of process wastewater to the POTW(excluding sanitary,
noncontact cooling and boiler blowdown wastewaters);or
2. Contributes process wastewater which makes up five percent or more of the NPDES or non-discharge permitted
flow limit or organic capacity of the POTW treatment plant. In this context,organic capacity refers to BOD,TSS
and ammonia;or
3. Is subject to categorical standards under 40 CFR Part 403.6 and 40 CFR Parts 405-471;or
4. Is designated as such by the Permittee on the basis that the Industrial User has a reasonable potential for adversely
affecting the POTW's operation or for violating any pretreatment standard or requirement,or the POTW's effluent
limitations and conditions in its NPDES or non-discharge permit,or to limit the POTW's sludge disposal options;
5. Subject to approval under I5A NCAC 02H .0907(b),the Permitter may determine that an Industrial User meeting
the criteria in paragraphs 1 or 2 of this definition above has no reasonable potential for adversely affecting the
POTW's operation or for violating any pretreatment standard or requirement,the POTW's effluent limitations and
conditions in its NPDES or non-discharge permit,or to limit the POTW's sludge disposal options,and thus is not a
Significant Industrial User(SIU);or
6. Subject to approval under 15A NCAC 02H .0907(b),the Permittee may determine that an Industrial Uscr meeting
the criteria in paragraph 3 of this definition above meets the requirements of 40 CFR Part 403.3(v)(2)and thus is a
non-significant categorical Industrial User.
Section B. Ohoned Treatment Works(POTWs)
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All POTWs must provide adequate notice to the Director of the following[40 CFR 122.42(b)]:
I. Any new introduction of pollutants into the POTW from an indirect discharger,regardless of the means of
transport,which would be subject to section 301 or 306 of CWA if it were directly discharging those pollutants;
and
2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger as
influent to that POTW at the time of issuance of the permit.
3. For purposes of this paragraph,adequate notice shall include information on(I)the quality and quantity of effluent
introduced into the POTW,and(2)any anticipated impact that may result from the change of the quantity or
quality of effluent to be discharged from the POTW.
Section C. Municipal Control of Pollutants from Industrial Users.
1. Effluent limitations are listed in Part I of this permit.Other pollutants attributable to inputs from Industrial Users
discharging to the POTW may be present in the Permittee's discharge.At such time as sufficient information
becomes available to establish limitations for such pollutants,this permit may be revised to specify effluent
limitations for any or all of such other pollutants in accordance with best practicable technology or water quality
standards.
2. Prohibited Discharges
a. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibition against the
introduction of pollutants or discharges into the waste treatment system or waste collection system which
cause or contribute to Pass Through or Interference as defined in 15A NCAC 02H .0900 and 40 CFR 403. [40
CFR 403.5(a)(1)]
b. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibitions against the
introduction of the following wastes in the waste treatment or waste collection system[40 CFR 403.5(b)]:
(I) Pollutants which create a fire or explosion hazard in the POTW,including,but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade
using the test methods specified in 40 CFR 261.21;
(2) Pollutants which cause corrosive structural damage to the POTW,but in no case discharges with pH lower
than 5.0,unless the works is specifically designed to accommodate such discharges;
(3) Solid or viscous pollutants in amounts which cause obstruction to the flow in the POTW resulting in
Interference;
(4) Any pollutant,including oxygen demanding pollutants(BOD,etc.)released in a Discharge at a flow rate
and/or pollutant concentration which will cause Interference with the POTW;
(5) Heat in amounts which will inhibit biological activity in the POTW resulting in Interference,but in no
case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C(104°F)
unless the Division,upon request of the POTW,approves alternate temperature limits;
(6) Petroleum oil,non-biodegradable cutting oil,or products of mineral oil origin in amounts that will cause
Interference or Pass Through;
(7) Pollutants which result in the presence of toxic gases,vapors,or fumes within the POTW in a quantity that
may cause acute worker health and safety problems;or
(8) Any trucked or hauled pollutants,except at discharge points designated by the POTW.
c. The Permittee shall investigate the source of all discharges into the POTW,including slug loads and other
unusual discharges,which have the potential to adversely impact the Permittee's Pretreatment Program and/or
the operation of the POTW.
The Permitter shall report such discharges into the POTW to the Director or the appropriate Regional Office.
Any information shall be provided orally within 24 hours from the time the Permittee became aware of the
circumstances.A written submission shall also be provided within 5 days of the time the Permittee becomes
aware of the circumstances.The written submission shall contain a description of the discharge;the
investigation into possible sources;the period of the discharge,including exact dates and times;if the
discharge has not ceased,the anticipated time it is expected to continue;and steps taken or planned to reduce,
eliminate,and prevent reoccurrence of the noncompliance,
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3. With regard to the effluent requirements listed in Part I of this permit,it may be necessary for the Permitter to
supplement the requirements of the Federal Pretreatment Standards(40 CFR,Part 403)to ensure compliance by
the Permitter with all applicable effluent limitations. Such actions by the Permittee may be necessary regarding
some or all of the industries discharging to the municipal system.
4. The Permittee shall require any Industrial User(1U)discharging to the POTW to meet Federal Pretreatment
Standards developed under Section 307(b)of the Act as amended(which includes categorical standards and
specific local limits,best management practices and narrative requirements). Prior to accepting wastewater from
any Significant Industrial User(SIU),the Permittce shall either develop and submit to the Division a new
Pretreatment Program or,as necessary,a modification of an existing Pretreatment Program,for approval as
required under section D below as well as 15A NCAC 02H .0907(a)and(b). [40 CFR 122.44(j)(2)]
5. This permit shall be modified,or alternatively,revoked and reissued,to incorporate or modify an approved POTW
Pretreatment Program or to include a compliance schedule for the development of a POTW Pretreatment Program
as required under Section 402(b)(8)of the CWA and implementing regulations or by the requirements of the
approved State pretreatment program,as appropriate.
Section D. Pretreatment Programs
Under authority of sections 307(b)and(c)and 402(b)(8)of the CWA and implementing regulations 40 CFR 403,
North Carolina General Statute 143-215.3(14)and implementing regulations 15A NCAC 02H .0900,and in accordance
with the approved pretreatment program,all provisions and regulations contained and referenced in the pretreatment
program submittal are an enforceable part of this pennit. [40 CFR I 22.44(j)(2)]
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8)of the CWA,40
CFR 403, 15A NCAC 02H.0900,and the legal authorities,policies,procedures,and financial provisions contained in
its pretreatment program submission and Division approved modifications thereof.Such operation shall include but is
not limited to the implementation of the following conditions and requirements.Terms not defined in Part II or Part IV
of this permit are as defined in 15A NCAC 02H .0903 and 40 CFR 403.3.
I. Sewer Use Ordinance(SUO)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program. [15A
NCAC 02H.0903(b)(32), .0905 and.0906(b)(1);40 CFR 403.8(f)(1)and 403.9(b)(1)and(2)]
2. Industrial Waste Survey(IWS)
The Permittee shall implement an 1WS consisting of the survey of users of the POTW collection system or
treatment plant,as required by 40 CFR 403.8(f)(2)(i-iii)and 15A NCAC 02H .0905 [also 40 CFR 122.44(j)(1)],
including identification of all Industrial Users that may have an impact on the POTW and the character and amount
of pollutants contributed to the POTW by these Industrial Users and identification of those Industrial Users
meeting the definition of SIU. Where the Permittce accepts wastewater from one or more satellite POTWs,the
IWS for the Permittee shall address all satellite POTW services areas,unless the pretreatment program in those
satellite service areas is administered by a separate Permittee with an approved Pretreatment Program.The
Permittee shall submit a summary of its IWS activities to the Division at least once every five years,and as
required by the Division.The IWS submission shall include a summary of any investigations conducted under
paragraph C.2.c.of this Part. [15A NCAC 02H .0903(b)(13),.0905 and.0906(b)(2);40 CFR 403.8(0(2)and 403.9]
3. Monitoring Plan
The Permittee shall implement a Division-approved Monitoring Plan for the collection of facility specific data to
be used in a wastewater treatment plant Headworks Analysis(HWA) for the development of specific pretreatment
local limits. Effluent data from the Plan shall be reported on the DMRs(as required by Parts II.D and I1.E.5.). [15A
NCAC 02H .0903(b)(16),.0906(b)(3)and.0905]
4. Headworks Analysis(HWA)and Local Limits
The Permittee shall obtain Division approval of a HWA at least once every five years,and as required by the
Division. Within 180 days of the effective date of this permit(or any subsequent permit modification)the
Permittce shall submit to the Division a written technical evaluation of the need to revise local limits(i.e.,an
updated HWA or documentation of why one is not needed)[40 CFR 122.44].The Permittee shall develop, in
accordance with 40 CFR 403.5(c)and 15A NCAC 02H .0909,specific Local Limits to implement the prohibitions
listed in 40 CFR 403.5(a)and(b)and 15A NCAC 02H .0909. Pursuant to 40 CFR 403.5,local limits are
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enforceable Pretreatment Standards as defined by 40 CFR 403.3(1). [15A NCAC 02H .0903(b)(10),.0905,and
.0906(b)(4)]
5. Industrial User Pretreatment Permits(IUP)&Allocation Tables
In accordance with NCGS 143-215.1,the Permittee shall issue to all Significant Industrial Users,permits for
operation of pretreatment equipment and discharge to the Pennittee's collection system or treatment works.These
permits shall contain limitations,sampling protocols,reporting requirements,appropriate standard and special
conditions,and compliance schedules as necessary for the installation of treatment and control technologies to
assure that their wastewater discharge will meet all applicable pretreatment standards and requirements.The
Permittee shall maintain a current Allocation Table(AT)which summarizes the results of the HWA and the limits
from all IUPs.Pennitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined by the HWA. [l5A NCAC 02H.0906(b)(6),.0909, .0916,and.0917;40 CFR 403.5,403.8(f)(1)(iii);
NCGS 143-215.67(a)]
6. Authorization to Construct(AtC)
The Pennittee shall ensure that an Authorization to Construct permit(AtC)is issued to all applicable Industrial
Users for the construction or modification of any pretreatment facility.Prior to the issuance of an AtC,the
proposed pretreatment facility and treatment process must be evaluated for its capacity to comply with all
Industrial User Pretreatment Permit(IUP)limitations. [l 5A NCAC 02H .0906(b)(7)and.0905;NCGS 143-
215.1(a)(8)]
7. POTW Inspection&Monitoring of their!Us
The Permittee shall conduct inspection,surveillance,and monitoring activities as described in its Division
approved pretreatment program in order to determine,independent of information supplied by Industrial Users,
compliance with applicable pretreatment standards. [15A NCAC 02H .0908(c);40 CFR 403.8(f)(2)(v)] The
Permittee must:
a. Inspect all Significant Industrial Users(SIUs)at least once per calendar year;
b. Sample all Significant Industrial Users(SIUs)at least once per calendar year for all SIU permit-limited
parameters including flow except as allowed under 15A NCAC.0908(e);and
c. At least once per year,document an evaluation of any non-significant categorical Industrial User for
compliance with the requirements in 40 CFR 403.3(v)(2),and either continue or revoke the designation as non-
significant.
8. IU Self Monitoring and Reporting
The Permittee shall require all Industrial Users to comply with the applicable monitoring and reporting
requirements outlined in the Division-approved pretreatment program,the industry's pretreatment permit,or in I5A
NCAC 02H .0908. [15A NCAC 02H .0906(b)(5)and.0905;40 CFR 403.8(f)(1)(v)and(2)(iii);40 CFR
122.44(j)(2)and 40 CFR 403.12]
9. Enforcement Response Plan(ERP)
The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(b)and(c)of the CWA(40 CFR 405 et.seq.),prohibitive discharge standards
as set forth in 40 CFR 403.5 and 15A NCAC 02H .0909,specific local limitations,and other pretreatment
requirements. All remedies,enforcement actions and other,shall be consistent with the Enforcement Response
Plan(ERP)approved by the Division. [l5A NCAC 02H .0903(b)(7),.0906(b)(8)and.0905;40 CFR 403.8(f)(5)]
10. Pretreatment Annual Reports(PAR)
The Permittee shall report to the Division in accordance with I5A NCAC 02H.0908. In lieu of submitting annual
reports,Modified Pretreatment Programs developed under 15A NCAC 02H .0904(b)may be required to submit a
partial annual report or to meet with Division personnel periodically to discuss enforcement of pretreatment
requirements and other pretreatment implementation issues.
For all other active pretreatment programs,the Permittee shall submit two copies of a Pretreatment Annual Report
(PAR)describing its pretreatment activities over the previous calendar year to the Division at the following
address:
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NC DENR/Division of Water Resources/Water Quality Permitting Section
Pretreatment,Emergency Response,and Collection Systems(PERCS)Unit
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
These reports shall be submitted by March 1 of each year and shall contain the following:
a. Narrative
A narrative summary detailing actions taken,or proposed,by the Permittee to correct significant non-
compliance and to ensure compliance with pretreatment requirements;
b. Pretreatment Program Summary(PPS)
A pretreatment program summary(PPS)on forms or in a format provided by the Division;
c. Significant Non-Compliance Report(SNCR)
A list of Industrial Users(Ws)in significant noncompliance(SNC)with pretreatment requirements,and the
nature of the violations on forms or in a format provided by the Division;
d. Industrial Data Summary Forms(IDSF)
Monitoring data from samples collected by both the POTW and the Significant Industrial Users(SIUs).These
analytical results must be reported on Industrial Data Summary Forms(IDSF)or on other forms or in a format
provided by the Division;
c. Other Information
Copies of the POTW's allocation table,new or modified enforcement compliance schedules,public notice of
'Us in SNC,a summary of data or other information related to significant noncompliance determinations for
IUs that are not considered SIUs,and any other information,upon request,which in the opinion of the Director
is needed to determine compliance with the pretreatment implementation requirements of this permit;
11. Public Notice
The Permittee shall publish annually a list of Industrial Users(lUs)that were in significant noncompliance(SNC)
as defined in the Pcrmittcc's Division-approved Sewer Use Ordinance with applicable pretreatment requirements
and standards during the previous twelve month period.This list shall be published within four months of the
applicable twelve-month period. [15A NCAC 02H.0903(b)(34), .0908(6)(5)and.0905 and 40 CFR
403.8(f)(2)(viii)]
12. Record Keeping
The Permittec shall retain for a minimum of three years records of monitoring activities and results,along with
support information including general records,water quality records,and records of industrial impact on the
POTW and shall retain all other Pretreatment Program records as required by I5A NCAC 02H .0908(f). [15A
NCAC 02H.0908(f);40 CFR 403.12(o)]
13. Pretreatment Program Resources
The Permittec shall maintain adequate funding and qualified personnel to accomplish the objectives of its approved
pretreatment program.and retain a written description of those current levels of inspection. [15A NCAC 02H
.0906(b)(9)and(10)and.0905;40 CFR 403.8(f)(3),403.9(b)(3)]
14. Modification to Pretreatment Programs
Modifications to the approved pretreatment program including but not limited to local limits modifications,POTW
monitoring of their Significant industrial Users(SIUs),and Monitoring Plan modifications,shall be considered a
permit modification and shall be governed by 40 CFR 403.18, 15 NCAC 02H .0114 and 15A NCAC 02H.0907.
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Wilkesboro NPDES Permit Expansion I Attachment A:En gin eerin gAltematives Analysis 1 )�
Appendices
Appendix B — Speculative
Limits for Cub Creek WWTP

ROY COOPER i' 14 ii)
Gin 1•1110,
%
MICHAEL S.REGAN r., i'
.,,
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
October 28, 2020
Ken Noland
Town Manager
Town of Wilkesboro
203 West Main Street, PO Box 1056
Wilkesboro,North Carolina 28697
Subject: Speculative Effluent Limits
Cub Creek WWTP
Permit No. NC0021717
Wilkes County
Yadkin Pee-Dee River Basin
Dear Mr. Noland:
This letter provides speculative effluent limits for expansion to 8.0 and 10.0 MGD at the Cub
Creek WWTP. The Division received the speculative limits request in a letter dated June
1 30, 2020 from Ken Noland, Town Manager for Wilkesboro. Please recognize that speculative
limits may change based on future water quality initiatives, and it is highly recommended that the
applicant verify the speculative limits with the Division's NPDES Unit prior to any engineering
design work.
Receiving Stream. The Yadkin River has a stream classification of C and waters with this
classification have a best usage for aquatic life propagation and maintenance of biological
integrity, wildlife, secondary recreation, and agriculture. The Yadkin River has a summer 7Q10
flow of 196 cfs,a winter 7Q10 flow of 267 cfs, and an annual average flow of 682 cfs. The Yadkin
River at this location is not listed on the 303(d)list of impaired waters. However,this section does
comprise part of the headwaters of High Rock Lake which is impaired for chlorophyll a and
turbidity. Permitted and speculative limits may change depending on the fmal nutrient strategy
developed for the lake.
Based upon a review of information available from the North Carolina Natural Heritage Program
Online Map Viewer,there are not any Federally Listed threatened or endangered aquatic species
identified within a 5-mile radius of the proposed discharge location. If there are any identified
threatened/endangered species, it is recommended that the applicant discuss the proposed project
with the US Fish and Wildlife Service to determine whether the proposed discharge location might
1 impact such species.
Speculative Effluent Limits. Based on Division review of receiving stream conditions and water
quality modeling results, speculative limits for the proposed expansions to 8.0 and
North Carolina Department oFEnvironmental Quality Division o1 Water Resources
512 North Salisbury Street ! Ib17 Mail Service Center Raleigh.North Carolina 27699 1617
•• �� / 919 7079000

10.0 MGD are presented inTables 1 and 2. A complete evaluation of these limits and monitoring
p
requirements for metals and other toxicants,as well as potential instream monitoring requirements,
will be addressed upon receipt of a formal NPDES permit application. Some features of the
speculative limit development include the following:
• BOD/NHa Limits. Biochemical oxygen demand (BOD) and ammonia-nitrogen limits were
determined by holding the mass-loading for the expansions to currently permitted
levels. Ammonia limits also account for toxicity limits.
• Nutrients: Total Nitrogen(TN)and Total Phosphorus (TP)mass-loading were held to current
discharge levels based on the last three years annual average. These limits may change based on
rulemaking, adoption of a High Rock Lake TMDL, or other nutrient strategy.
TABLE 1. Speculative Limits for Cub Creek WWTP (8.0 MGD)
Effluent Characteristic Effluent Limitations
Monthly Weekly Daily Maximum
Average Average
Flow 8.0 MGD
BOD5 24.4 mg/L 36.6 mg/L
NH3 as N1 13.3 mg/L 35.0 mg/L
TSS 30.0 mg/L 45.0 mg/L
TRC(if used for 28 µg/L
disinfection)
TN2 205,476 lbs/year
TP3 109,872 lbs/year
Fecal coliform(geometric 200/100 mL 400/100 mL
mean)
Chronic Toxicity', Pass/Fail 5.9%
(Quarterly test)
Notes:
1. Based on current permitted critical flows,flows will be updated through USGS upon receipt of
permit modification application.Values are subject to change.
2. Equivalent to a concentration of 8.4 mg/L.
3. Equivalent to a concentration of 4.5 mg/L.
TABLE 2. Speculative Limits for Cub Creek WWTP(10.0 MGD)
Effluent Characteristic Effluent Limitations
Monthly Weekly Daily Maximum
Average Average
Flow 10.0 MGD
BOD5 18.7 mg/L 28.0 mg/L
NH3 as N1 10.9 mg/L 32.7 mg/L
TSS 30.0 mg/L 45.0 mg/L
TRC(if used for 28 µg/L
disinfection)
Page 2 of 3

TN2 205,476 lbs/year
TP3 109,872 lbs/year
Fecal coliform(geometric 200/100 mL 400/100 mL
mean)
Chronic Toxicity',Pass/Fail 7.3%
(Quarterly test)
Notes:
1. Based on current permitted critical flows, flows will be updated through USGS upon receipt of
permit modification application.Values are subject to change.
2. Equivalent to a concentration of 6.7 mg/L.
3. Equivalent to a concentration of 3.6 mg/L.
Engineering Alternatives Analysis (EAA). Please note that the Division cannot guarantee that an
NPDES permit for a new or expanding discharge will be issued with these speculative limits. Final
decisions can only be made after the Division receives and evaluates a formal permit application
for the new/expanded discharge. In accordance with North Carolina Administrative Code 15A
NCAC 2H.0105(c), the most environmentally sound alternative should be selected from all
reasonably cost-effective options. Therefore, as a component of all NPDES permit applications
for new or expanding flow, a detailed engineering alternatives analysis (EAA) must be
prepared. The EAA must justify requested flows and provide an analysis of potential wastewater
treatment alternatives. A copy of the Division guidance for preparing the EAA can be found
at: https://deq.nc.gov/about/divisions/water-resources/water-quality-permitting/npdes-
wastewater/npdes-permitting-process
Should you have any questions about these speculative limits or NPDES permitting requirements,
please feel free to contact David Hill at david.hill(uincdenr.gov [phone].
Respectfully,
David Hill
Environmental Specialist II
NPDES Municipal Permitting Unit
Hardcopy:
NPDES Permit File
Electronic Copy:
NC Wildlife Resources Commission, Inland Fisheries,
[e-mail]
US Fish and Wildlife Service, [e-mail]
DWR/Water Quality Regional Operations/Winston-Salem
DWR/Basinwide Planning, Ian McMillan
DWR/NPDES Server>Specs
Page 3 of 3

Grotz Lara
From: Grotz, Lara
Sent: Monday, November 15, 2021 9:36 AM
To: Hill, David A; Montebello, Michael J
Cc: Bramlett,Wes; Saunders, David
Subject: RE: [External] Cub Creek WWTP NC0021717 Speculative Limits
Attachments: 21717WilkesboroSpec2020.pdf
Good morning David,
Our team has been assembling the EAA and the EA for the NPDES permit modification. Based on your previous email,
our proposed system design will be based on the speculative limits provided in NC DEQ's letter(dated 10/28/2020) but
at a 9 mgd flow even though the 9 mgd limits are not specifically written. We are only revising the design flow and not
the TN and TP mass limits themselves. Below, I've included a table of the flow conditions we are designing for and the
associated concentration-derived TN and TP limits. A copy of the original speculative limits letter is attached.
Effluent Characteristic Effluent Limit
Flow 9.0 MGD Monthly Average
TN' 205,476 lbs/year
TPA 109,872 lbs/year
1. TN equivalent concentration is 7.5 mg/L
2. TP equivalent concentration is 4.0 mg/L
Thank you,
La ra
Lara Grotz, EIT
D 704.248.3622 M 434.996.0856
hdrinc com/foHow-us
From: Hill, David A<[e-mail]>
Sent:Tuesday, October 19, 2021 3:45 PM
To: Grotz, Lara <[e-mail]>; Montebello, Michael J<[e-mail]>
Cc: Bramlett, Wes<[e-mail]>
Subject: Re: [External] Cub Creek WWTP NC0021717 Speculative Limits
CAUTION: [EXTERNAL]This email originated from outside of the organization. Do not click links or open attachments
unless you recognize the sender and know the content is safe.
Hello Lara,
You can just submit the permit modification application, there is no need for any further speculative limits
from us since you have a flow tier of 10.0 MGD which exceeds the 9.0 MGD you are requesting in the
modification.
Sincerely,

David Hill
Environmental Specialist II
Industrial Permitting Unit
**Email preferred duringthis time*
NC DEQ/Division of Water Resources/Water Quality Permitting Section
NPDES Industrial Permitting Unit
919 707 3612 office
919 707 9000 main office
david.hi II ancdenr.ciov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Grotz, Lara<[e-mail]>
Sent:Tuesday,October 19, 2021 2:53 PM
To: Hill, David A<[e-mail]>; Montebello, Michael J<[e-mail]>
Cc: Bramlett,Wes<[e-mail]>
Subject: RE: [External]Cub Creek WWTP NC0021717 Speculative Limits
CAUTION: External email. Do not click links or open attachments unless you verify.Send all suspicious email as an attachment to
Report Spam.
Good afternoon David,
Thank you for the response.The speculative permit we currently have specifies limits at 8 and 10 mgd only.We are now
working on an NPDES permit modification to increase the plant's capacity from 4.9 mgd MMADF to 9 mgd MMADF.
Based on our in-person meeting with NC DEQ and Mike Montebello on August 12, it was indicated that we will need
revised speculative limits to include the new design flow of 9 mgd. From this meeting, it is our understanding that limit
tables are needed for 8,9,and 10 mgd even though the TN and TP mass-based limits are staying the same.
How do you recommend we move forward modifying the speculative permit?
Thank you,
Lara
Lara Grotz, EST
D 704.248.3622 M 434.996.0856
2

hdrinc.com/follow-us
From: Hill, David A<[e-mail]>
Sent:Thursday,September 30,2021 8:33 AM
To:Grotz, Lara<[e-mail]>; Montebello, Michael J<[e-mail]>
Cc: Saunders, David<[e-mail]>; Bramlett, Wes<[e-mail]>;Sam Call
<[e-mail]>; Dustin Colburn<[e-mail]>; Ken Noland
<townm a [e-mail]>
Subject: Re: [External] Cub Creek WWTP NC0021717 Speculative Limits
CAUTION: [EXTERNAL]This email originated from outside of the organization. Do not click links or open attachments
unless you recognize the sender and know the content is safe.
Hello Lara,
We only provide up to two flow tiers when developing speculative limits. Since the speculative limits are still
valid for your facility, we will not be able to develop another flow tier.
Thanks,
David Hill
Environmental Specialist II
Industrial Permitting Unit
**Email preferred during this time*
NC DEQ/Division of Water Resources/Water Quality Permitting Section
NPDES Industrial Permitting Unit
919 707 3612 office
919 707 9000 main office
david.hi ll(ancdenr.gov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and maybe disclosed to third parties.
From: Grotz, Lara<[e-mail]>
Sent: Monday,September tember 27,2021 4:40 PM
3

To: Montebello, Michael J<[e-mail]>
Cc: Saunders, David<[e-mail]>; Bramlett, Wes<[e-mail]>;Sam Call
<[e-mail]>; Dustin Colburn<[e-mail]>; Noland, Ken
<[e-mail]>; Hill, David A<[e-mail]>
Subject: [External]Cub Creek WWTP NC0021717 Speculative Limits
CAUTION:External email. Do not click links or open attachments unless you verify.Send all suspicious email as an attachment to
Report Spam.
Good afternoon Mike,
Thank you for meeting with us throughout the Wilkesboro Cub Creek WWTP expansion process. One of our action items
from the HDR,Wilkesboro,and NC DEQ meeting on August 12, 2021 was to send you an email with the speculative
permit limit revision to 9 mgd. I've attached The Town of Wilkesboro's current speculative permit limit. In that attached
letter,could you revise and add a Speculative Limit table for a 9.0 MGD expansion using the same mass limits for TN and
TP?
TN would maintain the limit of 205,476 lbs/year but the equivalent concentration would be 7.5 mg/L
TP would maintain the limit of 109,872 lbs/year but the equivalent concentration would be 4.0 mg/L
We are currently drafting the Engineering Alternatives Analysis(EAA)for your further review.
Thank you,
Lara
Lara Grotz, EIT
Water/Wastewater ET
HDR
440 S Church St,Suite 1000
Charlotte, NC 28202
D 704.248.3622 M 434.996.0856
[e-mail]
hdri nc.com/follow-us
4

Wilkesboro NPDES Permit Expansion I Attachment A:EngineeringAltemativesAnalysis
Appendices
C
Appendix C — US Census
Population Information

Cn@sus
QuickFacts
Wilkes County,North Carolina
OuickFacts provides statistics for all states and counties,and for cities and towns with a population of 5.000 or more
Table
• All Topics Wilkes County,
North Carolina
•
Population per square mile.2010 91.9
,i PEOPLE
Population
Population estimates,July 1,2019,(V2019) 68,412
Population estimates base,April 1.2010,(V2019) 69,310
Population,percent change-April 1,2010(estimates base)to July 1,2019,(V2019) -1.3%
Population,Census,April 1,2020 65,969
Population,Census,April 1,2010 69,340
Age and Sex
Persons under 5 years,percent •5.1%
Persons under 18 years.percent ♦20.1%
Persons 65 years and over,percent •22.2%
Female persons,percent •50.9%
Race and Hispanic Origin
Wide alone,percent •92.7%
Black or African American alone,percent (a) •4 7%
American Indian and Alaska Native alone,percent (a) •0.4%
Asian alone,percent (a) •0.6%
Native Hawaiian and Other Pacific Islander alone,percent (a) •0.1%
Two or More Races,percent •1 5%
Hispanic or Latino,percent (b) •6.9%
While alone,not Hispanic or Latino,percent •86.7%
Population Characteristics
Veterans,2015-2019 4,197
Foreign bow persons,percent,2015-2019 4.1%
Housing
Housing units,July 1,2019,(V2019) 33.766
Owner-occupied housing unit rate,2015-2019 75 7
Median value of owner-occupied housing units,2015-2019 $126,300
Median selected monthly owner costs-with a mortgage,2015-2019 $1,011
Median selected monthly owner costs-without a mortgage,2015-2019 $324
Median gross rent,2015-2019 $632
Building permits,2020 110
Families&Living Arrangements
Households,2015-2019 28,753
Persons per household,2015-2019 2.35
Living in same house 1 year ago,percent of persons age 1 year+,2015-2019 93 4%
Language other than English spoken at home,percent of persons age 5 years+,2015-2019 6 4%
Computer and Internet Use
Households with a computer,percent,2015-2019 83.5%
Households with a broadband Internet subscription,percent,2015-2019 74.8%
Education
High school graduate or higher,percent of persons age 25 years+,2015-2019 B0.1%
Bachelor's degree or higher.percent of persons age 25 years+,2015-2019 15.8%
Health
With a disability,under age 65 years,percent,2015-2019 12.6%
Persons without health insurance,under age 65 years,percent • 16 4%
Economy
In civilian labor force,total,percent of population age 16 years+,2015-2019 55.7%
In civilian labor force,female,percent of population age 18 years+,2015-2019 50.6%
Total accommodation and food services sales,2012($1,000) (c) 65,660
Total health care and social assistance receipts/revenue,2012($1,000) (c) 233,866
Total manufacturers shipments,2012($1,000) (c) 1,156,115
Total retail sales,2012($1,000) (c) 1,365,239
Total retail sales per capita,2012 (c) $19,899
Transportation
Mean travel time to work(minutes),workers age 18 years+,2015-2019 25.3

Income&Poverty
Median household income(in 2019 dollars),2015-2019 $44,107
Per capita income in past 12 months(in 2019 dollars),2015-2019 $25,202
Persons in poverty,percent a 15.2%
lid BUSINESSES
Businesses
Total employer establishments,2019 1,160
Total employment,2019 18,835
Total annual payroll,2019($1,000) 837,228
• Total employment,percent change.2018-2019 -1.3%
•
Total nonemployer establishments,2018 4,441
All firms,2012 5,280
Men-owned fines,2012 3,274
Women-owned firms,2012 1,315
Minority-owned firms,2012 377
Nonminority-owned firms,2012 4,721
Veteran-owned firms,2012 462
Nonveteran-owned firms,2012 4.512
Itti GEOGRAPHY
Geography
Population per square mile,2010 *IS
_3-d area :01 754.28
FI=.�Cei- 37193

About datasets used in this table
Value Notes
a Estimates are not con-parable to other geographic levels clue to rrethodology differences that may exist between different data sources.
Some estimates presented here come from sample data,and thus have sampling errors that may render some apparent differences between geographies statistically indistinguishable.Click the Quick Info•icon to the left of each
row in TABLE view to learn about sampling error.
The vintage year(e.g.,V2019)refers to the final year of the series(2010 thin 2019).Different vintage years of estimates are not comparable
F act Notes
(a) Includes persons reporting only one race
(a) Economic Census-Puerto Rico data are not comparable to U.S Economic Census data
(b) Hispanics may be of any race,so also are included in applicable race categories
Value Flays
- Either no or too few sample observations were available to compute an estimate,or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest or upper interval of an
open ended distribution.
F Fewer than 25 firms
D Suppressed to avoid disclosure of confidential information
N Data for this geographic area cannot be displayed because the number of sample cases is too small.
FN Footnote on this item in place of data
X Not applicable
S Suppressed,does not meet publication standards
NA Not available
Z Value greater than zero but less than half unit of measure shown
QuickFacts data are derived from:Population Estimates,American Community Survey,Census of Population and Housing,Current Population Survey,Small Area Health Insurance Estimates,Small Area Income and Poverty
Estimates,State and County Housing Unit Estimates,County Business Patterns,Nonemployer Statistics,Economic Census.Survey of Business Owners,Building Permits.
•
CONNECT wt a US x
Accessibility I Information Quality I FOIA I Data Protection and Privacy Policy I U.S Department of Commerce

Annual Estimates of the Resident Population for Incorporated Places in North Carolina: April 1, 2010 to July 1, 2019
Wendell town, North Carolina 5,845 5,838 5,877 6,071 6,141 6,111 6,148
Wentworth town, North Carolina 2,807 2,782 2,782 2,775 2,762 2,741 2,741
Wesley Chapel village, North Carolina 7,463 7,829 7,862 7,976 8,108 8,250 8,441
West Jefferson town, North Carolina 1,299 1,332 1,330 1,317 1,314 1,310 1,305
Whispering Pines village, North Carolina 2,928 2,954 2,966 2,987 3,013 3,044 3,086
Whitakers town, North Carolina 744 744 743 742 736 732 726
White Lake town, North Carolina 802 816 816 810 809 805 804
Whiteville city, North Carolina 5,394 5,371 5,359 5,330 5,398 5,492 5,531
Whitsett town, North Carolina 590 590 591 597 602 610 617
Wilkesboro town, North Carolina 3,413 3,578 3,573 3,560 3,558 3,538 3,515
Williamston town, North Carolina 5,511 5,746 5,742 5,664 5,566 5,520 5,474
Wilmington city, North Carolina 106,476 106,456 106,754 108,141 109,658 111,686 113,320
Wilson city, North Carolina 49,167 49,168 49,222 49,160 49,288 49,148 48,992
Wilson's Mills town, North Carolina 2,277 2,268 2,280 2,317 2,343 2,376 2,420
Windsor town, North Carolina 3,630 3,623 3,595 3,576 3,449 3,505 3,757
Winfall town, North Carolina 594 606 609 607 611 615 610
Wingate town, North Carolina 3,491 3,466 3,477 3,572 3,603 3,810 3,757
Winston-Salem city, North Carolina 229,617 229,627 230,022 231,867 233,867 235,728 238,478
Winterville town, North Carolina 9,269 9,218 9,254 9,342 9,440 9,464 9,457
Winton town, North Carolina 769 771 769 763 758 756 750
Woodfin town, North Carolina 6,123 6,274 6,283 6,327 6,389 6,463 6,486
Woodland town, North Carolina 809 807 805 795 777 762 750
Wrightsville Beach town, North Carolina 2,477 2,488 2,493 2,516 2,541 2,553 2,550
Yadkinville town, North Carolina 2,959 2,973 2,974 2,970 2,950 2,943 2,925
Yanceyville town, North Carolina 2,039 2,074 2,077 2,052 2,027 2,027 2,017
Youngsville town, North Carolina 1,157 1,151 1,157 1,157 1,165 1,177 1,189
Zebulon town, North Carolina 4,433 4,459 4,477 4,559 4,635 4,622 4,765
Note: The estimates are based on the 2010 Census and reflect changes to the April 1,2010 population due to the Count Question Resolution program and geographic program revisions.All geographic
Census field indicates a locality that was formed or incorporated after the 2010 Census.Additional information on these localities can be found in the Geographic Boundary Change Notes(see https://wv
notes.html). For population estimates methodology statements, see http://www.census.gov/programs-surveys/popest/technical-documentation/methodology.html.
Suggested Citation:
Annual Estimates of the Resident Population for Incorporated Places in North Carolina:April 1,2010 to July 1, 2019(SUB-IP-EST2019-ANNRES-37)

11/5/21,3:55 PM Census-Table Results
W.An official website of the United States government Here's how you know
United States®
AGE AND SEX Census
_I._Bureau
Note: This is a modified view of the original table produced by the U.S. Census Bureau. This
download or printed version may have missing information from the original table.
Moravian Falls CDP, North Carolina
I
Total Percent
i
Label Estimate Margin of Error Estim
V Total population 1,802 ±525
V AGE
Under 5 years 18 ±29 1
5 to 9 years 127 ±124 7
10 to 14 years 55 ±76 3
15 to 19 years 77 ±105 4
20 to 24 years 69 ±58 3
25 to 29 years 162 ±124 9
.L.
30 to 34 years 0 ±12 0
35 to 39 years 100 ±97 5
40 to 44 years 88 ±97 I 4
45 to 49 years 97 ±95 5
50 to 54 years 107 ±87 5
55 to 59 years 161 ±123 8
60 to 64 years 131 ±79 7
65 to 69 years 182 ±122 10
70 to 74 years 270 ±231 15
i
75 to 79 years 121 ±99 ± 6
80 to 84 years 37 ±43 2
85 years and over II 0 ±12 0
V SELECTED AGE CATE9
5 to 14 years 182 ±168 10
15 to 17 years 40 ±59 2
1__
Under 18 years 240 ±218 13
18 to 24 years 106 ±100 5
https://data.census.gov/cedsci/table?g=1600000US3744280&tid=ACSST5Y2019.S0101&hidePreview=true 1/3

11/5/21,3:55 PM Census-Table Results
15 to 44 years I 496 ±269 271
Table Notes
AGE AND SEX
Survey/Program:American Community Survey
Year: 2019
Estimates: 5-Year
Table ID: S0101
Although the American Community Survey(ACS) produces population, demographic and housing unit estimates, it is
the Census Bureau's Population Estimates Program that produces and disseminates the official estimates of the
population for the nation, states,counties,cities, and towns and estimates of housing units for states and counties.
Source: U.S. Census Bureau, 2015-2019 American Community Survey 5-Year Estimates
When information is missing or inconsistent,the Census Bureau logically assigns an acceptable value using the
response to a related question or questions. If a logical assignment is not possible,data are filled using a statistical
process called allocation,which uses a similar individual or household to provide a donor value. The"Allocated" section
is the number of respondents who received an allocated value for a particular subject.
The age dependency ratio is derived by dividing the combined under-18 and 65-and-over populations by the 18-to-64
population and multiplying by 100.
The old-age dependency ratio is derived by dividing the population 65 and over by the 18-to-64 population and
multiplying by 100.
The child dependency ratio is derived by dividing the population under 18 by the 18-to-64 population and multiplying by
100.
Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising
from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent
margin of error. The margin of error can be interpreted roughly as providing a 90 percent probability that the interval
defined by the estimate minus the margin of error and the estimate plus the margin of error(the lower and upper
confidence bounds) contains the true value. In addition to sampling variability,the ACS estimates are subject to
nonsampling error(for a discussion of nonsampling variability, see ACS Technical Documentation). The effect of
nonsampling error is not represented in these tables.
The 2015-2019 American Community Survey(ACS)data generally reflect the September 2018 Office of Management
and Budget(0MB) delineations of metropolitan and micropolitan statistical areas. In certain instances,the names,
codes, and boundaries of the principal cities shown in ACS tables may differ from the OMB delineation lists due to
differences in the effective dates of the geographic entities.
Estimates of urban and rural populations, housing units, and characteristics reflect boundaries of urban areas defined
based on Census 2010 data. As a result,data for urban and rural areas from the ACS do not necessarily reflect the
results of ongoing urbanization.
Explanation of Symbols:
An "**"entry in the margin of error column indicates that either no sample observations or too few sample
observations were available to compute a standard error and thus the margin of error. A statistical test is not
appropriate.
An "-"entry in the estimate column indicates that either no sample observations or too few sample observations
were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the
median estimates falls in the lowest interval or upper interval of an open-ended distribution, or the margin of
error associated with a median was larger than the median itself.
https://data.census.gov/cedsci/table?g=1600000US3744280&tid=ACSST5Y2019.S01018‘hidePreview=tnie 2/3

11/5/21,3:55 PM Census-Table Results
An "-"following a median estimate means the median falls in the lowest interval of an open-ended distribution.
An "+"following a median estimate means the median falls in the upper interval of an open-ended distribution.
An "***" entry in the margin of error column indicates that the median falls in the lowest interval or upper interval
of an open-ended distribution.A statistical test is not appropriate.
An "*****"entry in the margin of error column indicates that the estimate is controlled.A statistical test for
sampling variability is not appropriate.
An "N"entry in the estimate and margin of error columns indicates that data for this geographic area cannot be
displayed because the number of sample cases is too small.
An "(X)" means that the estimate is not applicable or not available.
Supporting documentation on code lists, subject definitions,data accuracy, and statistical testing can be found on the
American Community Survey website in the Technical Documentation section.
Sample size and data quality measures (including coverage rates, allocation rates, and response rates)can be found on
the American Community Survey website in the Methodology section.
https://date.census.gov/cedsciitable?g=1600000US3744280&tid=ACSST5Y2019.S0101&hidePreview=true 3/3

11/5/21,3:56 PM Census-Table Results
lig An official website of the United States government Here's how you know
United States®
AGE AND SEX Census
....Bureau
Note: This is a modified view of the original table produced by the U.S. Census Bureau. This
download or printed version may have missing information from the original table.
Wilkesboro town,North Carolina
Total Percent
Label Estimate Margin of Error Estim
V Total population 3,495 ±18 j
V AGE
Under 5 years 275 ±101 7
5 to 9 years 162 ±102 4
I
10 to 14 years 97 ±71 _ 2
15 to 19 years 245 ±106 L 7
20 to 24 years 328 ±139 9
25 to 29 years 317 ±147 9
30 to 34 years 195 ±95 5
35 to 39 years 146 ±68 4
40 to 44 years 160 ±79 4
45 to 49 years 90 ±62 2
50 to 54 years 180 ±115 5
55 to 59 years 181 ±73 5
60 to 64 years 250 ±125 7
65 to 69 years 189 ±76 5
70 to 74 years 178 ±77 5
75 to 79 years 165 ±83 4
80 to 84 years 81 ±72 2
85 years and over 256 ±125 7
V SELECTED AGE CATE9
5 to 14 years 259 ±119 7
15 to 17 years 150 ±74 4
Under 18 years 684 ±193 19
18 to 24 years 423 ±187 12
https://data.census.gov/cedsciRable?g=1600000US3774020&tid=ACSST5Y2019.S0101&hide Preview=true 1/3

11/5/21,3:56 PM Census-Table Results
15 to 44 years 1,391 ±264 39
Table Notes
AGE AND SEX
Survey/Program:American Community Survey
Year: 2019
Estimates: 5-Year
Table ID: S0101
Although the American Community Survey(ACS) produces population, demographic and housing unit estimates, it is
the Census Bureau's Population Estimates Program that produces and disseminates the official estimates of the
population for the nation, states, counties, cities, and towns and estimates of housing units for states and counties.
Source: U.S. Census Bureau, 2015-2019 American Community Survey 5-Year Estimates
When information is missing or inconsistent,the Census Bureau logically assigns an acceptable value using the
response to a related question or questions. If a logical assignment is not possible,data are filled using a statistical
process called allocation,which uses a similar individual or household to provide a donor value. The"Allocated" section
is the number of respondents who received an allocated value for a particular subject.
The age dependency ratio is derived by dividing the combined under-18 and 65-and-over populations by the 18-to-64
population and multiplying by 100.
The old-age dependency ratio is derived by dividing the population 65 and over by the 18-to-64 population and
multiplying by 100.
The child dependency ratio is derived by dividing the population under 18 by the 18-to-64 population and multiplying by
100.
Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising
from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent
margin of error. The margin of error can be interpreted roughly as providing a 90 percent probability that the interval
defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper
confidence bounds) contains the true value. In addition to sampling variability,the ACS estimates are subject to
nonsampling error(for a discussion of nonsampling variability, see ACS Technical Documentation). The effect of
nonsampling error is not represented in these tables.
The 2015-2019 American Community Survey(ACS)data generally reflect the September 2018 Office of Management
and Budget(0MB)delineations of metropolitan and micropolitan statistical areas. In certain instances,the names,
codes, and boundaries of the principal cities shown in ACS tables may differ from the OMB delineation lists due to
differences in the effective dates of the geographic entities.
Estimates of urban and rural populations, housing units, and characteristics reflect boundaries of urban areas defined
based on Census 2010 data.As a result, data for urban and rural areas from the ACS do not necessarily reflect the
results of ongoing urbanization.
Explanation of Symbols:
An "**"entry in the margin of error column indicates that either no sample observations or too few sample
observations were available to compute a standard error and thus the margin of error. A statistical test is not
appropriate.
An "-"entry in the estimate column indicates that either no sample observations or too few sample observations
were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the
median estimates falls in the lowest interval or upper interval of an open-ended distribution, or the margin of
error associated with a median was larger than the median itself.
https://data.census.gov/cedscirteble?g=1600000US3774020&tid=ACSST5Y2019.S0101&hidePreview=true 2/3

11/5/21,3:56 PM Census-Table Results
An "-"following a median estimate means the median falls in the lowest interval of an open-ended distribution.
An "+"following a median estimate means the median falls in the upper interval of an open-ended distribution.
An "***"entry in the margin of error column indicates that the median falls in the lowest interval or upper interval
of an open-ended distribution.A statistical test is not appropriate.
An "*****"entry in the margin of error column indicates that the estimate is controlled.A statistical test for
sampling variability is not appropriate.
An "N"entry in the estimate and margin of error columns indicates that data for this geographic area cannot be
displayed because the number of sample cases is too small.
An "(X)" means that the estimate is not applicable or not available.
Supporting documentation on code lists,subject definitions,data accuracy, and statistical testing can be found on the
American Community Survey website in the Technical Documentation section.
Sample size and data quality measures (including coverage rates, allocation rates, and response rates)can be found on
the American Community Survey website in the Methodology section.
https://data.census.gov/cedsci/table?g=1600000US3774020&tid=ACSST5Y2019.S0101&h idePreview=true 3/3

11/5/21.3:28 PM SAS Output
Projected Annual County Population Totals, 2020-2029
Open as Excel File
County July2020 July2021 Juy20',2 July 2023 July 2024 J14/.w. July_G20 .,ury 2027 July2028 Jury2029
Alamance 170,698 171.649 173,165 175.110 177,047 178,981 180,918 182,853 184.790 186,726
Alexander 38,524 38,569 38,744 38,941 39,133 39.324 39,519 39,709 39,904 40,095
Allegtiany 11,558 11,587 11,675 11,753 11,833 11,911 11,989 12,066 12,147 12,226
Anson 23,889 23,755 23,673 23,624 23,576 23,527 23,476 23,427 23,376 23,328
Ashe 28,020 28,125 28,393 28,626 28,869 29,104 29,344 29,577 29,818 30,054
Avery 18,182 18,175 18,241 18,310 18,376 18,445 18,508 18,579 18,644 18.711
Beaufort 47,400 47,213 47,156 47,149 47,139 47,128 47.115 47,103 47,093 47,078
Bettie 19,496 19,315 19,189 19,101 19,018 18,930 18,841 18,754 18,668 18,580
Baden 34,421 34,255 34,167 34,123 34,078 34,034 33,990 33,947 33,901 33,856
2r1Jn86ick 147,644 150,889 154,692 157,961 161,221 164,483 167,739 171,001 174,256 177,517
Buncombe 264,408 265,351 267,327 269,343 271,347 273,348 275,354 277,353 279,357 281,361
Burke 91,708 91,538 91,686 91,945 92,202 92,465 92,730 92,995 93,258 93,522
Cabanas 216,841 219.830 224,019 228,287 232,651 237,030 241,328 245,502 249,575 253,615
Caldwell 84,230 84,512 84,992 85,466 85,828 86,200 86,553 86,942 87,335 87,749
Camden 10,575 10,553 10,552 10,565 10,574 10,585 10,594 10,601 10,606 10,611
Carteret 71,352 71,536 72,060 72,571 73,083 73,594 74,106 74,620 75,131 75,644
Caswell 23,462 23,371 23,350 23,349 23,350 23,347 23,349 23,348 23,347 23,347
Catawba 160,732 161,351 162,577 163,838 165,096 166,352 167,611 168,867 170,125 171,381
Chatham 77,061 78,199 79,834 81,335 82,834 84,330 85,826 87,322 88,820 90,319
Cherokee 29,610 29,739 30,021 30,284 30,544 30,803 31,063 31,324 31,585 31,844
Chavai 14,114 14,034 13,989 13,964 13,935 13,905 13,879 13,850 13.823 13,794
Clay 11.759 11,834 11,969 12,089 12,208 12,324 12,439 12,551 12,659 12.767
Cleveland 100,814 101,133 101,714 102,214 102.619 102,959 103,239 103,471 103,666 103,828
Columbus 56,002 55,600 55,269 55,050 54,822 54,597 54,374 54,150 53,924 53,700
Craven 103,016 102,663 102.454 102,448 102,439 102,434 102,425 102,419 102,418 102,413
Cumberland 333,531 333,323 333,177 333,644 333.971 334,207 334,378 334,505 334,594 334,662
Cunitudc 28,048 28.336 28,756 29,165 29,574 29,980 30,389 30,796 31,204 31,611
Dare 38,027 38,321 38,755 39,152 39,521 39,864 40,184 40,482 40,762 41,026
Davidson 170,370 171,014 172,286 173,607 174,921 176,235 177,548 178,862 180,175 181,490
Davie 43,746 44,160 44,767 45,330 45,891 46,453 47,012 47,575 48,135 48,694
Dupin 60,177 60,146 60,235 60,409 60,564 60,720 60,864 61,004 61,136 61,262
Durham 321,261 324,586 329,094 333,705 338,298 342,889 347,483 352.078 356,672 361,266
Edgecombe 52,024 51,475 50,963 50,575 50,186 49,798 49,410 49,020 48,633 48,244
Forsyth 380,964 382,388 385,125 388,254 391,432 394,665 397,941 401.238 404,566 407,902
Franklin 71.196 72,032 73,238 74,390 75,539 76,685 77,831 78.977 80,122 81.271
Gaston 224,168 224,738 225,982 227,523 229,242 231.109 233,023 234,896 236,686 238,394
Goes 11,908 11,834 11,788 11,773 11,762 11,751 11,746 11,742 11.739 11,738
Graham 8,642 8,585 8,549 8,530 8,511 8,496 8,485 8,472 8,463 8,455
Granville 61.628 62.040 62,723 63,395 64,063 64,730 65,401 66,069 66,738 67,408
Greene 20,951 20,874 20,840 20,843 20,844 20,844 20,841 20.842 20,844 20,842
Guilford 538,431 539,491 542,471 546,533 550,964 555,743 560,826 566,183 571,773 577,572
Halifax 50,898 50,387 49.911 49,564 49,212 48,859 48,504 48.152 47,798 47,445
Hamett 136,705 138,043 139,894 141,778 143,660 145,536 147,418 149,293 151,174 153,053
Haywood 63,481 63.687 64,176 64,649 65,116 65,587 66,055 66,523 66,992 67,463
Henderson 118,563 119,315 120,972 122,346 123,960 125,351 126,971 128,368 129,989 131,389
Hertford 23,720 23,544 23,446 23,402 23,369 23.349 23,335 23.322 23,317 23,312
https://files.nc.govincosbm/demog/countytotals_2020_2029.html 1/3

11/521,3:28 PM SAS Output
County July2020 July2021 July2022 . _ • 2026 July2027 July2028 July2029
Hole 54,682 54,876 55,150 55,521 55,882 56,236 56,587 56,933 57,276 57,612
Hyde 5,119 5,079 5,045 5,023 4,998 4,975 4,952 4,926 4,901 4,879
Wardell 183,309 185,011 187,525 189,994 192,458 194,916 197,375 199,835 202,293 204,756
' Jackson 44,354 44,572 44,972 45,375 45,776 46,172 46,571 46,968 47,368 47,769
Johnston 211,626 216,670 222,914 228,440 233,803 239,055 244,237 249,372 254,473 259,553
Jones 10,067 10,031 10,018 10,020 10,015 10,012 10,014 10,011 10,011 10,007
Lee 61,663 61.880 62,392 62,959 63521 64,083 64,644 65,205 65,767 66,330
Lenoir 56,876 56,602 56,427 56,345 56,258 56,175 56,091 56,003 55,921 55,834
Lincoln 88,699 90,046 91,604 92,688 93,574 94,437 95,415 96,593 97,969 99,478
Macon 37,014 37,393 37,998 38,545 39,093 39,642 40,191 40,738 41,286 41,834
Madison 22,500 22,556 22,697 22,841 22,986 23,130 23,272 23,416 23,559 23,702
Martin 22,904 22,704 22,531 22,402 22,277 22,148 22,020 21,892 21,762 21,637
McDawell 46,530 46,496 46,602 46,745 46,880 47,021 47,158 47,298 47,434 47,574
Mecklenburg 1,118,775 1,138,138 1,163,138 1,184,646 1,204,041 1,223,734 1,244,605 1,266,404 1,288,070 1,309,205
Mitchell 15,112 15,031 14,994 14,970 14,946 14,924 14,899 14,874 14,852 14,829
Montgomery 27,753 27,693 27.697 27,739 27,777 27,814 27,854 27.891 27,930 27,970
Moore 102,814 104,130 106,052 107,838 109,620 111,395 113,171 114,947 116,717 118,486
Nash 96,669 96,907 97,393 97,870 98,283 98,652 98,973 99,257 99,509 99,732
New Hanover 235,231 237,448 240.::7 244,206 247,512 250,814 254,121 257,427 260,731 264,036
Northamptcn 20,054 19,716 19,372 19,091 18,811 18,529 18,248 17,967 17,685 17,405
Onslcw 210,056 211,881 213,776 216,009 218,229 220,451 222,671 224,891 227,115 229,336
Orange 147,907 148,828 150,287 151,796 153,298 154,796 156,294 157,788 159,281 160,774
Pamlico 13,277 13,239 13,254 13,271 13,286 13,302 13,322 13,340 13,357 13,375
Pasquotank 39,952 39,814 39,736 39,737 39,735 39,734 39,731 39,728 39,729 39,729
Pander 63,949 64,524 65,405 66,251 67,092 67,936 68,780 69,625 70,468 71,311
Perquimans 13,807 13,839 13,938 14,042 14,147 14,258 14,368 14,481 14,595 14,711
Person 40,450 40,450 40,556 40,700 40,836 40,964 41,092 41,216 41,334 41,450
Pitt 183,285 184,842 187,111 189,427 191,730 194,033 196,339 198,642 200,946 203,250
Polk 21,923 21,999 22,186 22,358 22,529 22,700 22,868 23,038 23,207 23,376
Randolph 145,246 145,480 146,165 146,952 147,731 148,513 149,292 150,074 150,851 151,632
Richmond 45,014 44,777 44,609 44,526 44,437 44,352 44,268 44,182 44,094 44,007
Robeson 131,238 130,713 130,364 130,277 130,187 130,094 129,997 129,905 129,810 129,724
• Rockingham 91,915 91,634 91,563 91,579 91,584 91,585 91,585 91,585 91,583 91,584
Rowan 143,274 142,902 143,009 143,449 144,343 145,376 146,440 147,228 147,761 148,099
Rutherford 69,049 69,168 69,544 69,942 70,338 70,734 71,127 71,521 71,916 72,312
Sampson 64,053 63,904 63,851 63,898 63,934 63,967 63,991 64,009 64,029 64,043
Scotland 35,724 35,604 35,513 35,504 35,485 35,471 35,453 35,439 35,421 35,406
Stanly 64,691 64,841 65,142 65,474 65,800 66,127 66,453 66,781 67,107 67,433
Stokes 46,684 46,573 46,585 46,631 46,666 46,700 46,726 46,754 46,771 46,788
Surry 73,548 73,394 73,445 73,567 73,682 73,801 73,915 74,034 74,150 74,267
Swain 14,489 14,468 14,493 14,530 14,573 14,616 14,660 14,701 14,747 14,793
Transylvania 35,511 35,649 35,969 36,267 36,563 36,862 37,161 37,458 37,758 38,054
Tyrrell 3,767 3,747 3,742 3,735 3,729 3,727 3,722 3,719 3,713 3,707
Union 238,740 241,576 245,954 250,729 255,759 260,936 266,161 271,386 276,584 281,756
Vance 45,435 45,323 45,297 45,326 45,351 45,373 45,389 45,403 45,415 45,423
Wake 1,102,782 1,117,556 1,137,863 1,158,291 1,178,919 1,199,735 1,220,683 1,241,722 1,262,824 1,283,973
Warren 19,767 19,542 19,330 19,159 18,988 18,820 18,650 18,479 18,313 18,141
Washington 12,039 11,923 11,817 11,738 11,662 11,584 11,506 11,427 11,349 11,271
Watauga 57,011 56,776 57,364 58,385 59,851 60,968 61,879 62,152 62,413 62,558
https:/ffiles.nc.gov/ncosbm/demog/countytotals_2020_2029.html 2/3

11/5/21.3:28 PM SAS Output
County July2020 July2021 July2022 July2023 July2024 July2025 July2026 July2027 July2028 July2029
Wayne 126,339 126,396 126,732 127,239 127,742 128,239 128,738 129,238 129,737 130,237
Wilkes 70,263 70,272 70,509 70,788 71,067 71,341 71,617 71,892 72,170 72,442
Nilson 83,495 83,893 84,537 85,170 85,777 86,366 86,940 87,506 88,066 88,624
Yaddn 38.145 38,039 38,013 38,030 38,042 38,049 38,057 38,061 38,066 38,067
Yancey 18,909 19,077 19,351 19,606 19,860 20,114 20,368 20,622 20,875 21,128
STATE 10,587,440 10,658,717 10,770,474 10,883,654 10,995,885 11,108,479 11,222,595 11,336,714 11,450,807 11,563,974
Source-North Carolina OSI3tyl,Standad Population Estimates,Vintage 2019 and Population Projedions,Vintage 2020
Return to Top
Last updated February 18,2021
https://files.nc.gov/ncosbm/demog/countytotals_2020_2029.html 3/3

11/5/21,3:28 PM SAS Output
Projected Annual County Population Totals, 2030-2039
Qpen as Excel File
County Juiy 2030 July 2031 July 2032 July 2033 July 2034 July 2035 July 2036 July 2037 July 2038 July 2039
Alamance 188,650 190,597 192,531 194,465 196,402 198.339 200,278 202,211 204,149 206,085
Alexander 40,286 40,479 40,671 40,866 41,057 41,248 41,439 41,631 41,828 42019
Alleghany 12,302 12381 12,459 12,537 12,616 12,695 12,774 12,853 12,931 13.010
Anson 23,277 23,229 23,179 23,131 23,081 23,032 22,982 22,934 22,884 22,833
Ashe 30,294 30,528 30,767 31,007 31244 31,481 31.720 31.956 32.197 32435
Avery 18,780 18,845 18,911 18,980 19,047 19,112 19,180 19,247 19,317 19,381
Beaufort 47,069 47,060 47,044 47,035 47,025 47,012 47.000 46,988 46,978 46,966
Berne 18.496 18408 18,320 18,233 18,146 18,059 17,974 17,886 17,800 17.713
Baden 33,813 33,769 33,724 33,681 33,636 33,592 33,547 33,503 33,457 33,413
Brunswick 180,776 184,036 187.297 190,554 193,815 197,075 200,335 203,592 206,850 210,110
Buncombe 283,363 285,365 287,369 289,372 291,376 293,380 295,381 297,385 299,387 301,391
Burke 93,787 94,051 94,318 94,579 94,844 95,107 95,372 95,637 95,901 96,168
Cabarrus 257,692 261.849 266,077 270,348 274.607 278,824 282,980 287,104 291,225 295.372
Caldwell 88,161 88,579 88,986 89,391 89,792 90,192 93,596 90,998 91,403 91,808
Camden 10,617 10,622 10,625 10,627 10,630 10,633 10,634 10,639 10,640 10,641
Carteret 76,159 76,674 77,187 77,704 78.214 78,728 79,244 79.760 80.272 80,786
Caswell 23,348 23,349 23,348 23,347 23,347 23,349 23,350 23,350 23,350 23,351
Catawba 172,637 173,893 175,150 176,404 177,664 178,918 180,176 181.433 182,688 183,943
Chatham 91,813 93,310 94,807 96,300 97,800 99,298 100,793 102,289 103,786 105,285
Cherokee 32,106 32,366 32,625 32,::5 33,144 33,408 33,665 33,927 34,185 34,446
Chowan 13.767 13.736 13,708 13,681 13.655 13,625 13,596 13,568 13,542 13.514
Oa 12,870 12.977 13,076 13,175 13.272 13,367 13.460 13.552 13,641 13,730
Cleveland 103,964 104,073 104,168 104,244 104,307 104,362 104,406 104,442 104,474 104,498
Columbus 53476 53,249 53,023 52,800 52,577 52,351 52,123 51,899 51,676 51,448
Craven 102,411 102,407 102,406 102,403 102 401 102,402 102,400 102,399 102,397 102,396
Cumberland 334,709 334,742 334,770 334,787 334,799 334,812 334,819 334,826 334,826 334,828
Currituck 32,017 32,424 32,830 33,238 33,648 34,055 34,463 34,870 35,278 35,686
Dare 41,268 41,496 41,707 41,908 42,092 42,265 42,428 42,579 42,720 42,853
Davidson 182,801 184,114 185,431 186,744 188,053 189,368 190,681 191,995 193,305 194,620
Davie 49,255 49.818 50,378 50,939 51.501 52,060 52,623 53,181 53.742 54304
Duplin 61.384 61,501 61,608 61,712 61.812 61,904 61.995 62.082 62.165 62.246
Durham 365,859 370,450 375,043 379,638 384,230 388,823 393,417 398,014 402,604 407,197
Edgecombe 47,855 47,466 47,077 46.689 46.300 45.910 45.524 45.132 44,743 44,355
Forsyth 411,256 414,620 417,985 421,359 424,732 428,113 431,494 434,879 438,261 441,646
Fraiklin 82,418 83,565 84,713 85,858 87,008 88,156 89,301 90,448 91,595 92,742
Gaston 240,069 241,741 243,446 245.187 246,960 248,735 250,505 252.257 253,988 255.714
Gates 11.736 11,736 11,736 11,732 11,734 11,734 11,732 11,732 11,733 11,733
Graham 8,450 8,443 8,437 8,434 8,429 8,427 8,425 8,421 8,419 8,417
Granville 68,078 68,747 69,418 70,089 70,758 71,426 72,097 72,766 73,435 74,103
' Greene 20,844 20,842 20,845 20,842 20,841 20,842 20,843 20,843 20,844 20,843
Guilford 583,552 589,693 595,976 602,378 608,891 615,500 622,191 628,954 635,785 642,672
l
Halifax 47,093 46,740 46,386 46,034 45,681 45,327 44,973 44620 44,268 43,916
Hamett 154,930 156,812 158,6:•: 160,568 162,448 164,329 166,204 168,084 169,964 171,843
Haywood 67,931 68,398 68,868 69,336 69,807 70,276 70,743 71215 71,684 72,151
I Henderson 133,007 134,406 136,031 137,430 139,052 140,450 142,073 143,469 145,096 146,494
Hertford 23,310 23,308 23,306 23,305 23,303 23,302 23,303 23,303 23,301 23,304
https://files.nc.gov/ncosbm/demog/countytotals_2030_2039.html 1/3

11/5/21,3:28 PM SAS Output
County July2030 July 2031 July 2032 July 2033 July 2034 July 2035 July2036 July 2037 July2039 July2039
Hoke 57,946 58,278 58,608 58,934 59,255 59,575 59.895 60,212 60,526 60,837
Hyde 4,853 4.830 4,804 4.780 4,755 4,729 4,706 4,681 4,659 4,633
Iredell 207,217 209,675 212,135 214,595 217,056 219,516 221,975 224,436 226,896 229,357
Jackson 48,165 48,563 48,960 49,362 49,759 50.159 50,557 50,953 51,354 51,752
Johnston 264,618 269,675 274,723 279,766 284,808 289,846 294,887 299,919 304.955 309,989
Jones 10,006 10,006 10,003 10,002 9,999 10,000 9,997 9,993 9,991 9,988
Lee 66,893 67,456 68,019 68,577 69,141 69,706 70,264 70,828 71,389 71.951
Lenoir 55,751 55,668 55,581 55,499 55,412 55,325 55,243 55,157 55,071 54,987
Lincoln 101,026 102,516 103,894 105,154 106,322 107,458 108,617 109,838 111,130 112,475
Macon 42,382 42,930 43,477 44,026 44,574 45,123 45,671 46,219 46,767 47,312
Mad son 23,843 23,988 24,130 24,274 24,417 24,562 24,704 24,847 24,991 25,136
Martin 21,511 21,382 21,253 21,125 20,999 20,869 20,744 20,614 20,487 20,358
McDowell 47,712 47,853 47,989 48,131 48,267 48,406 48,544 48,683 48,821 48,959
Mecklenburg 1,329,914 1,350,685 1,371,697 1,392,903 1,414,0W 1,435,145 1,456,127 1,477,118 1,498,160 1,519,243
Mitchell 14,805 14,784 14,760 14,739 14,714 14,694 14,670 14,648 14,627 14,606
Montgomery 28,006 28,047 28,086 28,124 28,161 28,203 28,240 28,281 28,317 28,352
Moore 120,258 122,024 123,789 125,551 127,314 129,075 130,831 132,589 134,341 136,095
Nash 99,926 100,101 100,252 100,389 100,508 100,608 100,702 100,785 100,855 100,920
New Hanover 267,340 270,644 273,950 277,256 280,562 283,865 287,168 290,473 293,779 297,084
Northampton 17,124 16,845 16,560 16,280 15,998 15,716 15,435 15,154 14,872 14,591
Onslow 231,558 233,780 236,001 238,224 240,445 242,666 244,886 247.110 249,328 251,552
Orange 162,267 163,758 165,246 166,733 168,219 169,701 171,184 172,666 174,144 175,625
Pamlico 13,392 13,407 13,424 13,442 13,459 13,476 13,494 13,508 13,525 13,542
Pasquotank 39,729 39,728 39,727 39,728 39,728 39,728 39,725 39,727 39,725 39,727
Pen der 72,153 73,000 73,844 74,686 75,530 76,376 77,217 78,059 78,904 79,748
Perquimans 14,826 14,941 15,061 15,179 15,299 15,416 15,536 15,654 15,774 15,894
Person 41,560 41.669 41,774 41,874 41,973 42,066 42,158 42,247 42,333 42,418
Pitt 205,556 207,859 210,165 212,468 214,771 217,075 219,378 221,682 223,986 226,290
Polk 23,544 23,712 23,881 24,048 24,218 24,386 24,554 24,722 24,890 25,058
Randolph 152,412 153,193 153.971 154.754 155,535 156.314 157.092 157.874 158,657 159,434
Richmond 43,921 43,834 43,747 43,660 43,573 43,469 43,404 43,318 43,229 43,143
Robeson 129,627 129,534 129,443 129,349 129,254 129,158 129,068 128,976 128,884 128,792
Rockingham 91,586 91,586 91,583 91,584 91587 91,586 91.585 91,587 91,585 91,585
Rowan 148,482 149,046 149,848 150,779 151,694 152,444 153,005 153,458 153,939 154,551
Rutherford 72,706 73,101 73,499 73,892 74,286 74,680 75,075 75,469 75,864 76,261
Sampson 64,058 64,066 64.077 64,085 64,089 64.091 64,098 64,101 64,107 64,108
Scotland 35,389 35,373 35,354 35,337 35,323 35,306 35,290 35,277 35,259 35,241
Stang 67,759 68,084 68,410 68.738 69,062 69,389 69,717 70,044 70,369 70,696
Stokes 46,804 46,815 46.827 46,837 46,846 46,851 46,856 46,862 46,868 46.870
Surry 74,383 74,499 74,615 74,734 74,850 74,970 75,086 75,204 75,317 75,433
Swan 14,838 14,883 14,930 14,978 15,026 15,072 15,120 15,167 15.214 15,262
Transylvania 38.352 38,650 38,947 39,245 39,543 39,840 40,139 40,437 40,736 41,033
Tyrrell 3,701 3,699 3,694 3,689 3,686 3,681 3,674 3,669 3,665 3,661
Union 286,899 292,025 297,144 302,260 307,375 312,490 317,610 322,729 327,850 332,974
Vance 45,431 45,439 45,446 45,449 45,454 45,460 45,459 45,464 45,464 45,466
Wake 1,305,154 1,326,355 1,347,575 1,368,804 1,390,039 1,411,282 1,432,527 1,453,775 1,475,025 1,496,275
Warren 17,972 17,801 17,636 17,465 17,296 17,128 16,961 16,792 16,624 16,458
Washington 11,194 11,114 11,036 10,959 10,882 10,802 10,724 10,646 10,570 10,493
Watauga 63,224 64,033 65,241 66,198 67,113 67,545 68,008 68,294 68,964 69,661
https://files.nc.gov/ncosbm/demog/countytotals_2030_2039.html 2/3

11/5/21,3:28 PM SAS Output
County July2030 July2031 July2032 July2033 July2034 July2035 July2036 July2037 July2038 July2039
Wayne 130.737 131,233 131,733 132,230 132,732 133,231 133,731 134,232 134,732 135,229
Wilkes 72,721 72,995 73.274 73,548 73.824 74,100 74,376 74,653 74,928 75,202
Wilson 89,175 89,724 90.273 90,819 91,366 91,910 92.456 93,003 93,546 94,091
Yadkin 38,070 38,072 38.073 38,071 38,073 38,073 38.075 38.074 38,075 38,075
Yancey 21,381 21,634 21,888 22,142 22,396 22,650 22,904 23,158 23,413 23,665
STATE 11,677,603 11,791,486 11,906,512 12,021,411 12,136,425 12,250,415 12,364,388 12,477,919 12,592,195 12,706,544
Source North Carolina OSEM,Standard Population Estimates,Vintage 2019 and Population Projections,Vintage 2020
Return to Top
Last updated February 18,2021
https://files.tic.gov/ncosbm/demog/countytotals_2030_2039.html 3/3

11/5/21,3:28 PM SAS Output
Projected Annual County Population Totals, 2040-2050
Qpen as Excel File
.ounty July luau JJy zu.:I July 2042 July 2043 July 2044 July 2045 July 2046 July 2047 July 2048 July 2049 July 2050
Alamance 208,019 209,956 211,893 213,826 215,766 217.696 219,633 221,569 223,504 225,439 227,378
Alexander 42,211 42,404 42,595 42,789 42,982 43,172 43,366 43,557 43,752 43,944 44,135
Alleghany 13,087 13,165 13,245 13,322 13,401 13,479 13,559 13,635 13,715 13,793 13,873
Anson 22,786 22,738 22,690 22,641 22,592 22,544 22,496 22,448 22,398 22,348 22,300
Ashe 32,673 32,911 33,147 33,385 33,624 33,864 34,100 34,341 34,579 34,815 35,058
Avery 19,449 19,517 19,584 19,649 19,719 19,787 19,853 19,919 19,987 20,054 20,123
Beaufort 46,955 46,943 46,931 46,920 46,909 46,897 46,884 46,872 46,862 46,848 46,838
Bertie 17,625 17,539 17,452 17,365 17,279 17,189 17,103 17,017 16,931 16,841 16,757
Bladen 33,367 33,322 33,280 33,235 33,191 33,148 33,102 33,058 33,014 32,969 32,925
Brunswick 213,371 216,632 219,887 223,149 226,408 229,666 232,928 236,186 239,446 242,704 245,966
Buncombe 303,393 305,395 307,401 309,404 311,405 313,408 315,410 317,415 319,416 321,419 323,423
Burke 96,431 96,696 96,958 97,222 97,487 97,750 98,016 98,281 98,545 98,811 99,073
Cabarrus 299,548 303,760 307,981 312,191 316,377 320,542 324,694 328,848 333,018 337,202 341,397
Caldwell 92,212 92,618 93,023 93.427 93,829 94,234 94,639 95,042 95,445 95,852 96,253
Camden 10,644 10,644 10,648 10,647 10,646 10,647 10,646 10,649 10,646 10,647 10,647
Carteret 81,302 81.814 82,328 82,842 83,356 83,869 84,380 84,897 85,411 85,926 86,439
Caswell 23,349 23,351 23,350 23,348 23,347 23,347 23,347 23,346 23,346 23,346 23,349
Catawba 185,203 186,459 187,718 188,973 190,231 191,487 192,742 194,003 195,257 196,511 197,768
Chatham 106,778 108,277 109,772 111,269 112,765 114,263 115,759 117,255 118,753 120,252 121,744
Cherokee 34,705 34,968 35,228 35,487 35,749 36,008 36,267 36,527 36,788 37,049 37,307
Chowan 13,485 13,455 13,427 13,400 13,371 13,346 13,317 13,289 13,260 13,233 13,204
Clay 13,813 13,900 13,980 14,065 14,140 14,219 14,296 14,372 14,445 14,515 14,583
Cleveland 104,521 104,537 104,552 104,562 104,573 104,584 104,589 104,595 104,600 104,603 104,605
Columbus 51,225 50,999 50,776 50,551 50,326 50,100 49,875 49,652 49,427 49,202 48,978
Craven 102,396 102,396 102,396 102,395 102,396 102,397 102,397 102,397 102,394 102,395 102,393
Cumberland 334,831 334,830 334,834 334,836 334,834 334,836 334,835 334,835 334,837 334,835 334,835
Currituck 36,092 36,500 36,907 37,317 37,720 38,127 38,535 38,945 39,352 39,759 40,168
Dare 42,975 43,089 43,199 43,300 43,393 43,480 43,563 43,640 43,711 43,780 43,844
Davidson 195,934 197,245 198,560 199,873 201,187 202,500 203,811 205,127 206,440 207,752 209,066
Davie 54,867 55,429 55,989 56,546 57,108 57,670 58,229 58,790 59,353 59,915 60,475
Duplin 62,319 62,391 62,458 62,526 62,587 62,647 62,704 62,760 62,812 62,862 62,907
Durham 411,793 416,383 420,977 425,571 430,165 434,756 439,355 443,945 448,537 453,129 457,724
Edgecombe 43,968 43,579 43,194 42,803 42,415 42,025 41,637 41,249 40,861 40,469 40,063
Forsyth 445,036 448,418 451,804 455,192 458,579 461,967 465,351 468,741 472,126 475,515 478,900
Franklin 93,888 95,036 96,181 97,329 98,475 99,624 100,772 101,916 103,063 104,211 105,359
Gaston 257,446 259,182 260,929 262,678 264,428 266,175 267,915 269,660 271,399 273,142 274,880
Gates 11,733 11,733 11,733 11,733 11,733 11,733 11,733 11,730 11,731 11,731 11,731
Graham 8,416 8,413 8,415 8,412 8,413 8,411 8,411 8,409 8,409 8,409 8,409
Granville 74,774 75,445 76,114 76,785 77,455 78,124 78,790 79,460 80,129 80,798 81,468
Greene 20,844 20,844 20,845 20,843 20,843 20,842 20,842 20,842 20,841 20,843 20,843
Guilford 649,608 656,587 663,600 670,653 677,735 684,841 691,966 699,117 706,284 713,465 720,661
Halifax 43,561 43,207 42,856 42,501 42,150 41,797 41,445 41,091 40,737 40,385 40,031
Hamett 173.721 175,599 177,478 179,357 181,234 183,114 184,994 186,875 188,750 190,630 192,507
Haywood 72,621 73,089 73,559 74,028 74,495 74,966 75,435 75,902 76,371 76,841 77,308
Henderson 148,116 149,511 151,136 152,535 154,159 155,554 157.179 158,575 160,200 161,597 163,221
Hertford 23,300 23,303 23,301 23,303 23,302 23,304 23,304 23,303 23,305 23,303 23,301
https:/tfiles.nc.govincosbm/demog/countytotals_2040_2050.html 1/3

11/5/21,3:28 PM SAS Output
.. ..::6 2047 July 2049 July2050
Hoke 61,150 61,458 61,767 62,074 62,381 62,685 62,989 63,295 63,596 63,898 64,201
Hyde 4,609 4,585 4,560 4,537 4,511 4,487 4,462 4,439 4,412 4,389 4,363
Iredell 231,817 234,275 236,735 239,196 241,655 244,117 246,576 249,035 251,496 253,955 256,414
Jackson 52.154 52,552 52,951 53,348 53,745 54,145 54,543 54,940 55,340 55,740 56,138
Johnston 315,026 320,061 325,095 330,132 335,166 340,202 345,234 350,270 355,303 360,339 365,374
Jones 9,986 9,984 9,982 9,981 9,979 9,977 9,975 9,976 9,971 9,972 9,971
Lee 72,513 73,074 73,638 74.200 74.761 75,325 75,887 76,450 77,008 77,572 78,135
Lenoir 54,901 54,817 54,731 54,645 54,560 54,473 54,391 54,304 54,219 54,135 54,050
Lincoln 113,855 115,227 116,564 117,859 119,119 120,354 121,589 122,845 124,125 125,427 126,743
Macon 47,862 48,406 48,953 49,503 50,052 50,599 51,148 51,698 52,245 52,793 53,340
Madison 25,276 25,421 25,567 25,707 25,852 25,998 26,142 26,281 26,428 26,569 26,713
Martin 20,230 20,103 19,974 19,846 19,719 19,590 19,464 19,337 19,208 19,079 18,951
McDowell 49,097 49,238 49,375 49,515 49,653 49,793 49,931 50,070 50,208 50,345 50,482
Mecklenburg 1,540,320 1,561,374 1,582,408 1,603,449 1,624,499 1,645,554 1,666,607 1,687,659 1,708,708 1,729,755 1,750,805
Mitchell 14,583 14,559 14,542 14,521 14,499 14,478 14,457 14,438 14,419 14,397 14,378
Montgomery 28,393 28,432 28,471 28,509 28,549 28,587 28,625 28,663 28,703 28,741 28,779
Moore 137,848 139,595 141,342 143,088 144,833 146,574 148,315 150,053 151,790 153,528 155,261
1 1 1 101,106 101,139 1 117 Nash 100,97710,026 0 ,069 0 , 0 101,198 101,223 101,245 101,260 101,274
New Hanover 300,389 303,691 306,998 310,305 313,609 316,914 320,219 323,521 326,827 330,134 333,439
Northampton 14,310 14,030 13,748 13,467 13,188 12,906 12,624 12,340 12,060 11,781 11,499
Onslow 253,774 255,995 258,218 260,437 262,660 264,883 267,106 269,325 271,545 273,768 275,992
Orange 177,101 178,573 180,051 181,523 182,992 184,459 185,928 187,392 188,857 190,325 191,784
Pamlico 13,559 13,576 13,594 13,611 13,629 13,644 13,661 13,678 13,693 13,711 13,729
Pasquotark 39,727 39,727 39,727 39,727 39,725 39,728 39,728 39,728 39,728 39,727 39,727
Pander 80,591 81,437 82,277 83,122 83,967 84,809 85,652 86,495 87,340 88,185 89,028
Perquimans 16,012 16,132 16,249 16,370 16,488 16,611 16,730 16,850 16,969 17,088 17,207
Person 42,498 42,574 42,648 42,722 42,793 42,860 42,927 42,990 43,055 43,114 43,171
Pitt 228,596 230,897 233,201 235,507 237,809 240,113 242,414 244,720 247,025 249,327 251,634
Polk 25,224 25,392 25,559 25,728 25,895 26,062 26,228 26,394 26,561 26,727 26,892
Randdph 160,215 160,993 161,775 162,554 163,335 164,116 164,896 165,676 166,454 167,236 168,016
Richmond 43,057 42,972 42,884 42,799 42,713 42,626 42,538 42,454 42,367 42,278 42,192
Robeson 128,698 128,603 128,513 128,419 128,325 128,232 128,137 128,044 127,952 127,862 127,765
Rockingham 91,587 91,587 91,586 91,583 91,584 91,584 91,586 91,583 91,584 91,584 91,586
Rowan 155,315 156,162 156,988 157,707 158,299 158,824 159,370 160,009 160,747 161,538 162,309
Rutherford 76,657 77,051 77,444 77,838 78,235 78,631 79,024 79,420 79,814 80,209 80,605
Sampson 64,108 64,109 64,115 64,115 64,118 64,116 64,115 64,119 64,118 64,118 64,118
Scotland 35,225 35,212 35,193 35,176 35,160 35,141 35,125 35,110 35,092 35,076 35,059
Stanley 71,024 71,349 71,677 72,004 72,326 72.653 72,978 73,305 73,633 73,961 74,286
Stokes 46,875 46,879 46,881 46,884 46,887 46,888 46,888 46,890 46,890 46,892 46,892
Surry 75,551 75,669 75,785 75,902 76,017 76,136 76,253 76,367 76,486 76,602 76,720
Swain 15,309 15,355 15,403 15,451 15,496 15,545 15,593 15,641 15,687 15,737 15,783
Transylvania 41,331 41,632 41,928 42.228 42,525 42,823 43,119 43,420 43,716 44,014 44,310
Tyrrell 3,655 3,651 3,645 3,642 3,637 3,631 3,627 3,621 3,616 3,611 3,608
Union 338,092 343,219 348,340 353,457 358,583 363,704 368,827 373,948 379,067 384,190 389,312
Vance 45,466 45,469 45,468 45,471 45,471 45,470 45,470 45,471 45,471 45,471 45,471
Wake 1,517,529 1,538,781 1,560,036 1,581,290 1,602,543 1,623,795 1,645,050 1,666,304 1,687,559 1,708,815 1,730,067
Warren 16,289 16,123 15,954 15,784 15,621 15,455 15,290 15,122 14,957 14,788 14,625
Washington 10,412 10,334 10,255 10,178 10,101 10,021 9,945 9,864 9,786 9,710 9,630
Watauga 70,705 71,541 72,440 72,958 73,554 73,939 74,628 75,261 76,205 76,955 77,837
https://files.nc.gov/ncosbm/demog/countytotals_2040_2050.html 2/3

11/5/21,3:28 PM SAS Output
County July2040 July2041 July2042 July2043 July2044 July2045 July2046 July2047 July2048 July2049 July2050
Wayne 135,727 136,228 136,726 137,224 137,724 138,225 138,725 139,224 139,722 140,223 140,722
Wilkes 75,477 75,753 76,029 76,306 76,580 76,858 77,135 77,408 77,684 77,959 78,236
Wilson 94,638 95,181 95,726 96,271 96,814 97,361 97,905 98,449 98,992 99,537 100.083
Yadkin 38,076 38,077 38,077 38,078 38,076 38,078 38,078 38.079 38,079 38,076 38,077
Yancey 23,921 24,173 24,427 24,681 24,932 25,188 25,440 25,694 25,947 26,203 26,455
STATE 12,821,708 12,936,526 13,051,593 13,165,920 13,280,362 13,394,273 13,508,696 13,622,969 13,737,896 13,852,515 13,967,473
Source.North Carolina OSBM,Standard Population Estimates,Vintage 2019 and Population Projections,Vintage 2020
Return to Top
Last updated February 18,2021
https://files.nc.gov/ncosbm/demog/countytotals_2040_2050.html 3/3

Wilkesboro NPDES Permit Expansion I Attachment A:En gineerin gAltemativesAnalysis F11
Appendices J
Appendix D - Imposition of
Sewer Moratorium Letter

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DocuSign Envelope ID:B278646D-2FF3-41E2-8AF8-5BCAAA5E31C4
ROY COOPER t i
(hilt 1,,i`
JOHN NICHOLSON fir, ;y
Sc•c rl-�un
S. DANIEL SMITH
flrr, NORTH CAROLINA
Environmental Quality
7/1/2021
CERTIFIED MAIL 7018 1830 0001 8037 1769
RETURN RECEIPT REQUESTED
Mr. Kenneth D.Noland,Town Manager
Town of Wilkesboro
PO Box 1056
Wilkesboro,North Carolina 28697
Subject: Imposition of Sewer Line Moratorium
Demonstration of Future Wastewater Treatment Capacities
NPDES Permit NC0021717
Cub Creek WWTP, Class IV
700 Snyder Street,Wilkesboro
Wilkes County
Dear Permittee:
15A NCAC 02T.0118,"Demonstration of Future Wastewater Treatment Capacities,"was adopted by
the Environmental Management Commission to ensure that wastewater treatment systems owned or
operated by municipalities,counties,sanitary districts,or public utilities do not exceed their hydraulic
treatment capacities.
This Rule specifies that no permits for sewer line extensions will be issued by the Division of Water
Resources to facilities exceeding 80%of their hydraulic treatment capacity unless specific evaluations
of future wastewater treatment needs have been completed. Facilities exceeding 90%of their hydraulic
treatment capacity must submit plans and specifications and obtain all permits needed for expansion of
the wastewater treatment system before permits for sewer line extensions may be issued.
A review of your self-monitoring reports has indicated flow at the subject facility exceeded the 90%
threshold for calendar year Jan2020-Jan2021.The average flow calculated for this period was 4.7628
MGD representing 97.2 %of the current treatment capacity.Therefore,we will be unable to approve
any further sewer line extensions for this facility until such time as you have complied with the
requirements contained in the Rule.
To attain compliance with the Rule,you must obtain all permits needed for expansion of the wastewater
treatment system and,if construction is needed,submit approvable final plans and specifications for
expansion of the wastewater treatment system, including a construction schedule. If expansion is not
proposed or is proposed for a later date,a detailed justification must be made and approved by the
Director based on past growth records and future growth projections and as appropriate,shall include
conservation plans or other specific measures to achieve waste flow reductions.
North North Carolina Department of Environmental Quality Division of Water Resources
512 North Street i 1617 Mal Service Center Raleigh. North Carolina 27699-1617--919.707.3616

DocuSign Envelope ID:B278646D-2FF3-11E2-8AF8-5BCAAA5E31C4
To prevent delays in the processing of your future permit applications for sewer line extensions,please
submit a plan of action containing the information necessary to comply with the appropriate
demonstrations as described above to the following address:
DEQ-DWR
Compliance& Expedited Permitting Unit
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Provision For Sewer Line Approvals While On Moratorium
Per the terms of NCAC 02T.0118(3),the Director may,on a case-by-case basis,allow permits to be
issued to facilities exceeding the 80 or 90 percent loading rates if:
I) the additional flow will not cause the facility to exceed its permitted hydraulic capacity,
2) the facility has complied with all other permit limitations and requirements and
3) it is demonstrated that adequate progress is being made in developing the required
engineering evaluations or plans and specifications.
If you wish to obtain sewer extension permits while under moratorium per this provision of the rule,
please send all required information in support of your request to the Winston-Salem Regional Office
(WSRO).
Any plans and specifications for expansion should be submitted to the Division of Water Resources.
We look forward to working with you on development of plans to meet your future wastewater
treatment needs.If you have any questions regarding this matter,please contact the Water Quality
Regional Operations staff of our Winston-Salem Regional Office at336-776-9800,or email Joe R.
Corporon(Compliance&Expedited Permitting Unit)[joc.corporon(cvncdenr.gov]
Sincerely,
�DocuSigned by:
s —8328B44CE9EB4A1...
for S. Daniel Smith,Director
Division of Water Resources
Attachment(15A NCAC 02T.0118)
cc: Laseifiche
WSRO,Jenny Graznak,Lon Snider
Municipal Permitting Unit, David Hill

DocuSign Envelope ID:B278646D-2FF3-41E2-8AF8-5BCAAA5E31C4
15A NCAC 02T.0118 DEMONSTRATION OF FUTURE WASTEWATER TREATMENT CAPACITIES
To ensure that treatment,utilization,or disposal systems do not exceed their hydraulic treatment capacities,no
permits for sewer line extensions shall be issued to wastewater treatment systems owned or operated by
municipalities,counties,sanitary districts,or public utilities unless they meet the following requirements:
1) Prior to exceeding 80 percent of the wastewater treatment system's permitted hydraulic capacity
(based on the average flow of the last calendar year),the permittee must submit an approvable
engineering evaluation of their future wastewater treatment,utilization,and disposal needs. This
evaluation must outline specific plans for meeting future wastewater treatment,utilization,or disposal
needs by either expansion of the existing system,elimination or reduction of extraneous flows,or
water conservation and must include the source(s)of funding for the improvements. If expansion is
not proposed or is proposed for a later date,a detailed justification must be made to the satisfaction of
the Director that wastewater treatment needs will be met based on past growth records and future
growth projections and,as appropriate,shall include conservation plans or other specific measures to
achieve waste flow reductions.
2) Prior to exceeding 90 percent of the wastewater treatment,utilization,or disposal systems permitted
hydraulic capacity,(based on the last calendar year),the permittee must obtain all permits needed for
the expansion of the wastewater treatment,utilization,or disposal system and, if construction is
needed,submit approvable final plans and specifications for expansion including a construction
schedule. If expansion is not proposed or is proposed for a later date,a detailed justification must be
made to the satisfaction of the Director that wastewater treatment needs will be met based on past
growth records and future growth projections and,as appropriate,shall include conservation plans or
other specific measures to achieve waste flow reductions.
3) The Director shall allow permits to be issued to facilities that are exceeding the 80 percent or 90
percent loading rates if the additional flow is not projected to result in the facility exceeding its
permitted hydraulic capacity,the facility is in compliance with all other permit limitations and
requirements,and it is demonstrated to the satisfaction of the Director that adequate progress is being
made in developing the needed engineering evaluations or plans and specifications.In determining
the adequacy of the progress,the Director shall consider the projected flows,the complexity and
scope of the work to be completed and any projected environmental impacts.
History Note: Authority G.S. 143-215.3;
Elf September 1, 2006.

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Wilkesboro NPDES Permit Expansion I Attachment A En gin eenn g Alternatives Analysis 1 ��
Appendices J
Appendix E — Wilkesboro
Cub Creek WWTP Annual
Polymer and Energy Costs
9p:.

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2018 Plant Polymer Press Polymer 2019 Plant Polymer Press Polymer
January $ 14,458.41 $ 10,755.35 January $ 43,584.52 $ 28,489.44
February $ 29,009.28 $ 14,087.10 February $ 29,419.71 $ 13,318.87
March $ - $ - March $ 14,500.16 $ -
April $ 10,855.00 $ 28,655.90 April $ 29,195.61 $ 14,097.97
May $ 28,933.36 $ 38,406.83 May $ 32,863.95 $ -
June $ - $ - June $ - $ -
July $ 14,589.62 $ 13,600.00 July $ 29,101.02 $ 14,197.38
August $ 14,584.34 $ 13,590.41 August $ 29,105.63 $ 14,202.74
September $ 28,956.93 $ 27,385.30 September $ 14,502.52 $ -
October $ 40,518.51 $ 14,316.19 October $ 29,019.31 $ 7,125.16
November $ 28,998.81 $ 13,684.86 November $ 14,497.00
December $ 18,056.25 $ - December $ 14,487.21
Total $ 228,960.51 $ 174,481.94 Total $ 280,276.64 $ 91,431.56
Combined $ 403,442.45 Combined $ 371,708.20

2020 Plant Polymer Press Polymer 2021 Plant Polymer Press Polymer
January $ 33,457.11 $ 7,165.50 January $ 37,791.30 $ -
February $ 17,090.67 $ - February $ 23,313.25 $ 3,814.55
March $ 29,024.17 $ 7,125.31 March $ 33,424.72 $ 15,285.20
April $ 23,275.62 $ 7,132.39 April $ 58,173.61 $ 16,045.72
May $ 14,551.50 $ 7,089.49 May $ 30,932.30 $ 23,191.35
June $ 14,512.86 $ 14,298.29 June $ 45,399.17 $ -
July $ 30,231.94 $ 14,273.80 July $ 38,399.95 $ 14,331.87
August $ 14,481.75 $ - August $ 54,891.00 $ 14,332.33
September $ 43,442.86 $ - September $ 18,297.00
October $ 28,969.15 $ - October
November $ 28,955.95 $ - November
December $ 44,762.27 $ - December
Total $ 322,755.85 $ 57,084.78 Total $ 340,622.30 $ 87,001.02
Combined $ 379,840.63 Combined $ 427,623.32

2018 Duke Energy 2019 Duke Energy
January $ 28,561.50 January $ 31,812.35
February $ 27,939.17 February $ 26,038.76
March $ 26,734.49 March $ 24,582.42
April $ 27,278.59 April $ 23,035.47
May $ 26,808.88 May $ 28,187.98
June $ 29,766.90 June $ 29,183.17
July $ 33,389.69 July $ 30,574.02
August $ 34,515.19 August $ 32,519.64
September $ 30,147.18 September $ 32,336.31
October $ 28,597.78 October $ 29,292.44
November $ 35,482.77 November $ 26,321.42
December $ 34,790.65 December $ 25,134.93
Total $ 364,012.79 Total $ 339,018.91
I

2020 Duke Energy 2021 Duke Energy
January $ 23,734.93 January $ 24,951.10
February $ 20,439.31 February $ 23,691.05
March $ 21,818.65 March $ 23,430.51
April $ 24,833.13 April $ 24,783.96
May $ 25,032.51 May $ 24,627.96
June $ 24,207.08 June $ 33,616.19
July $ 31,368.38 July $ 32,469.27
August $ 32,069.72 August
September $ 28,515.36 September
October $ 27,621.35 October
November $ 23,946.69 November
December $ 24,012.49 December
Total $ 283,864.67 Total $ 162,618.94
I
I
I
I
I
I
I
I

DR
440 S Church Street, Suite 1200
Charlotte, NC 28202-2075
704.338.6700
hdrinc.corn
©2022 HDR, Inc., all rights reserved

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Attachment B — Wilkesboro
NPDES Permit Expansion
Environmental Assessment

FY2 1
S O wiike.,
O
• •
PPO R ME.O Y
Environmental
1
Assessment
1
Town of Wilkesboro Wastewater
Treatment Plant Expansion
NPDES Permit NC0021717
Wilkesboro, North Carolina
December 30, 2021
1

Wilkesboro NPDES Permit Expansion Attachment B:Environmental Assessment
P I EA Tables h,�
Town of Wilkesboro
Wastewater Treatment Plant Expansion
Environmental Assessment (EA)
Responsible Agency: NC Department of Environmental Quality
Division of Water Resources
217 West Jones Street
Raleigh, NC 27603
David Wainright
919-807-6442
David.Wainwrightta'�,ncdenr.gov
Consultant: HDR Engineering, Inc. of the Carolinas
555 Fayetteville Street
Suite 900
Raleigh, NC 27601
Jessica Tisdale, Senior Environmental
Scientist/Certified Ecologist
919-232-6654
jessica.tisdaleandrinc.corn
Owner: Town of Wilkesboro
Wastewater Treatment Plant
700 Snyder Street
Wilkesboro, NC 28697
Ken Noland
336-838-3951
knolandawilkesboronc.orq
1

\[,i.hiucnl It- I i, u nci�ni,i! \..r..i•�.ni
Table 7.1.1. TopographyFloodplains
and
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.2.
Floodplain Figure Reference Number(if applicable): Figure 3
Floodplain Information Appendix Reference (if applicable): N/A
Existing Conditions
Physiographic Province: ❑ Coastal Plain ® Piedmont ❑ Mountains
Minimum Elevation in Project Area (MSL): _ Maximum Elevation in Project Area (MSL):
946' _ 1038'
Is the project in the 100-year floodplain? (If so, show in Environmental ® Yes
Features Figure.) No
Is the project in the 100-year floodway? (If so, show in Environmental Li Yes
Features Figure.) [Si No
Discuss other topographical and geological features.
The project site, which is defined as the location of the existing facility, and project vicinity
(Figure 1)are located within the Wilkesboro 24K U.S. Geological Survey(USGS)topographic
quadrangle in Wilkes County, North Carolina(USGS 1993) (Figure 2). The study area
illustrated on the figures and discussed in this EID is based on the limits of disturbance that
will be included in the E&SC plans. Wilkes County is located in the Northern Inner Piedmont
(45e)ecoregion level IV. Generally,the Piedmont is considered a transition area between the
mostly mountainous ecoregions of the Appalachians to the northwest and the relatively flat
coastal plain to the southeast. This ecoregion is rolling to hilly and"has higher elevations,
more rugged topography, and more monadnocks or mountain outliers than other areas of the
Piedmont" (Griffith et al. 2002). The project site contains Federal Emergency Management
Agency(FEMA) designated 100-year floodplains - Flood Insurance Rate Maps(FIRM)
numbered 3710386800J and 3710387800J(effective dates March 2, 2009)(NCFMP 2021).
Impacts
Describe construction impacts of project on topography.
The proposed project would have minimal impacts to existing topography due to having
already been disturbed by previous development within the Cub Creek Wastewater Treatment
Plant(WWTP)site. Minimal grading would be required as a result of this project. The existing
headworks facility, aeration basin,UV disinfection, existing operations building, and effluent
flow metering structure located adjacent to Cub Creek will be taken out of service and will be
relocated to areas outside the 500-year floodplain. These relocated structures represent 1.1
acres of conversion of impervious surface to open space within the floodplain of the proposed
project. Disturbed areas that are not within building footprints would be restored and re-seeded
with native vegetation after construction.
1

Attachment B-Environmental Assessment
Table 7.1.1. Topography and Floodplains
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Describe impacts of project on the 100-year floodplain and floodway if"Yes"is checked
above.
Installation of the proposed project would result in temporary disturbance through the Zone X
and Zone AE 100-year floodplain adjacent to Cub Creek. The impacts consist of removing and
demolishing the existing aeration basin and Tyson influent pump station, adding rock to the
existing access roads for construction access, and installation of temporary erosion control
devices. There would be no permanent changes to existing ground elevations within the 100-
year floodplain as a result from the construction of the project. The project would result in a
net loss of above ground permanent structures within the regulated floodplain and would
benefit water quality and prevent overflow during high rainfall and flooding events. The
utility/engineer will coordinate with the local floodplain administrator to ensure the project
complies with FEMA regulations.
Describe SCI of the project.
Secondary and cumulative impacts on floodplains/floodways may result from the proposed
project due to the WWTP capacity increase from 4.9 mgd to 9 mgd. In the future, additional
wastewater lines may cross and indirectly impact floodplains and floodways in the service area
(4, 371 acres). This project would benefit the downstream floodplains and floodways by
reducing wastewater pollutants entering Cub Creek that would occur during future high
rainfall and flooding events.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
® Yes ® Yes
❑Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the ER/EID.
Mitigative Measure Description Reference(s)
The utility/engineer will coordinate with the local floodplain Town of Wilkesboro
administrator to ensure the project complies with FEMA regulations Sewer Use Ordinance
and to ensure that the proposed activities do not result in an increase
in the base floodplain elevation height or change to the existing
topography of the floodplain.
The utility/engineer will adhere to the Town of Wilkesboro's 2012
Sewer Use Ordinance and the regulations of direct and indirect
contributors to the municipal wastewater system.
2

Attachment B-Environmental Assessment
Table 7.2.1. Soils
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.3.
Soils Figure Reference Number: Figure 4
Soils Information Appendix Reference(if applicable): N/A
Existing Conditions
Describe the types of soil.Provide a soils figure in the EID.
The United States Department of Agriculture (USDA)Natural Resources Conservation
Service(NRCS)Web Soil Service indicates eight different soil map units within the study area
(USDA 2021). Banister fine sandy loam(BaB), Codorus loam(CoA)are considered NRCS
hydric soils. Brief descriptions of the soil map units are as follows:
Banister fine sandy loam, 1 to 6 percent slopes,rarely flooded(BaB)consist of moderately
well drained or somewhat poorly drained soils with moderate to slow permeability. These soils
formed from clayey alluvium and are located on stream terraces. The soil is characterized as
strongly acidic.
Codorus loam, 0 to 2 percent slopes, frequently flooded(CoA) consist of very deep,
moderately well drained and somewhat poorly drained soils. These soils formed in recent
deposited alluvial materials derived from upland soils materials weathered from mostly
metamorphic and crystalline rocks. They are located on floodplains with nearly level slopes.
The soil is characterized as strongly to very strongly acidic through moderately acidic in the
upper parts of the solum.
Dan River loam, 0 to 4 percent slopes, occasionally flooded(DaA)consist of very deep, well
drained soils. These soils formed in alluvium and are located on floodplains. The soil is
characterized as very strongly acidic in the upper parts of the solum through slightly acidic in
the lower parts of the solum.
Danripple sandy clay loam, 8 to 15 percent slopes,moderately eroded(DpC2)consist of very
deep,well drained soils. These soils formed alluvium and are located on stream terraces and
1 low hills. The soil is characterized as very strongly acidic to moderately acidic.
1 Fairview sandy loam, 15 to 25 percent slopes (FaD) consist of very deep, well drained soils.
1 These soils formed in residuum from felsic metamorphic or igneous rock and are located on
1 hills, ridges and interfluves. The soil is characterized as extremely acidic to moderately acidic
1 throughout.
1 Fairview sandy clay loam, 8 to 15 percent slopes, moderately eroded(FcC2)soils have the
1 same description as Fairview sandy loam and are located in less steep terrain.
1 Fairview-Urban land complex, 2 to 15 percent slopes(FrC) soils have the same description as
1 Fairview sandy loam (FaD)and includes built upon urban lands.
1 3

Attachment B-Environmental Assessment
Table 7.2.1. Soils
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Rhodhiss fine sandy loam, 25 to 60 percent slope (RdE)consist of very deep,well drained
soils. These soils formed in residuum from felsic crystalline rock and are located on hills and
ridges. The soil in characterized by very strongly acidic to slight acidic throughout.
Is soil contamination present? ❑ Yes VI No
Does soil type present any constraints to the project? n Yes No
If yes to either of the above, explain:
Based on available information, soil contamination is unknown at this time.
Impacts
Will soil be moved offsite? ❑Yes ® No Quantity(yd3): NA
Will soil be contaminated? ❑ Yes ® No
Describe construction impacts of project.
Soils on-site will be altered and built upon during construction;however,this site has
previously been modified and developed. The study area(limit of disturbance) is 35.5 acres.
Describe SCI of the project.
Secondary and cumulative impacts on soils could result from the proposed project. The project
adds wastewater treatment capacity and could result in the cut/fill or movement of soil within
the service area due to new wastewater line installation and the indirect impacts associated
with business/industrial or residential development.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
® Yes ® Yes
❑Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the ER/EID.
Mitigative Measure Description Reference(s)
Sediment and erosion control measures/plans, as required by state and NC Sediment
local regulations, will be approved and will be employed throughout Pollution Control Act
the duration of the project to limit soil loss and erosion. Disturbed of 1973,NPDES
soils would be stabilized with native seed mixes after construction is stormwater
completed. SCI mitigation measures can be achieved by following regulations
state and local regulations to prevent soil loss and erosion in the
service area.
4

I
4
1 4 Attachment B-Environmental Assessment
' 1
Table 7.3.1. Prime and Unique Farmland
4 Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
' Complete this table in accordance with Section 12.2.4.
Prime and Unique Farmland Information Appendix Reference (if applicable): N/A
Existing Conditions & Impacts
1 1) Does the project area contain prime and ® Yes If Yes, 10.2
unique(P&U)farmlands?If yes, show on soils ❑ No Quantity
figure the soil types that are prime and unique (acres):
farmland. (If"No"skip the rest of the table.)
2) Will P&U farmland be directly impacted by I Yes If Yes,
the project? (If"No" skip questions 3-4) ® No Quantity
(acres):
1 3) What is the total acreage ofP&Ufarmland in Acres 139,867 acres(2014
the county? Impacted: Wilkes Growth
Management Plan)
4) What is the percentage ofP&U farmland in Percentage 0
the county that will be impacted? (Divide Impacted:
answer to Question 2 by answer to Question 3)
Will SCI impact prime and unique farmlands? ® Yes If Yes, Not
El No Quantity quantifiable
(acres):
Describe SCI of the project.
Prime and unique farmlands are located in the study area. Coxville (CoA)and Dan River loam
(DaA)are considered prime farmlands. Danripple (DpC2) and Fairview sandy clay loam
(FcC2)are considered farmland of statewide importance. The project site is already
maintained and disturbed therefore prime and unique farmlands will remain in its' current
existing use.
Secondary and cumulative impacts to prime and unique farmlands would be minimal in the
service area. The 2019 National Land Cover Database (NLCD)classifications of hay/pasture
and cultivated crops and NRCS prime and unique designated farmlands (CoA and DaA)show
where these two datasets intersect to comprise 140 acres of actively farmed prime and unique
farmlands which represents 3 percent of the service area. Not all NRCS classified prime and
unique farmlands are being actively used for agricultural uses as some are in recreational use
along the Yadkin River. Nevertheless, future growth could potentially convert and or disturb
these areas within the service area. As future development occurs in the service area, it is
important to note that other factors besides the Cub Creek WWTP Expansion will determine
development opportunities.
Mitigative Measures
Mitigative Measures for Mitigative Measures for SCI?
Construction Impacts?
El Yes ® Yes
®Not Applicable El Not Applicable
5

Attachment B-Environmental Assessment
Table 7.3.1. Prime and Unique Farmland
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Describe the mitigative measures below and supply references to the appropriate appendix in
the ER/EID.
Mitigative Measure Description Reference(s)
NC Agricultural Development and Farmland ADFP
Preservation Fund(ADFPF) is a state program that
promotes agricultural development and farmland
preservation through conservation easements,
funding programs and funding conservation
agreements.
6

Attachment B-Environmental Assessment
Table 7.4.1. Land Use
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.5.
Land Use Figure Reference Number(if applicable): Figure 5
Land Use Information Appendix Reference (if applicable): Appendix E (Zoning
Wilkesboro/North
Wilkesboro)
Existing Conditions
Discuss the current land use for the project site.
Recent aerial imagery and use of the Town of Wilkesboro's online planning and zoning viewer
indicates the project is located within two parcels owned by the City of Wilkesboro (Parcel
IDs: 2201563 and 2203641)and one parcel owned by Tyson Foods(Parcel ID: 2206378). The
study area consists primarily of disturbed and maintained areas for wastewater treatment
facility components,with small, forested patches to the east and west of Synder Street and
northern project site boundary and forested edges along the Tyson Food treatment basins in the
eastern portion of the study area.
Discuss the current land use for the project area.
Recent aerial imagery and use of Town of Wilkesboro's online planning and zoning viewer
indicates the project area land use includes recreational, residential,forest, and agricultural
uses.
Discuss the zoning for the project site.
Town of Wilkesboro's online planning and zoning viewer indicates land use for the project
site is classified in the Wilkesboro zoning district as R-20(suburban residential). The Tyson
Foods parcel is in Wilkes County zoning district and is currently not classified by the Town of
Wilkesboro or North Wilkesboro.
Discuss the zoning for the project area.
Land use for the surrounding project area is zoned by the Town of Wilkesboro to the west and
south of the site and by the Town of North Wilkesboro to the north and east. Town of
Wilkesboro areas surrounding the site are mainly zoned as R-20 (suburban residential), and
R-8(single-family residential). Town of North Wilkesboro areas surrounding the site are
mainly zoned as GB(general business)R-10(low density residential), R-20(rural residential),
R-6 (high density residential), OI(office and institutional district), and Central Business
District(CBD) (Appendix A).
Impacts
Discuss the direct impacts to land use on the project site.
No direct impacts to land use are anticipated from the construction of the project. The project
is not expected to require local zoning or land use plans to be revised. The project is located
entirely within the Town of Wilkesboro and Tyson Foods parcels.
II
7

Attachment B-Environmental Assessment
Table 7.4.1. Land Use
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro 5 Oro
Describe SCI of the project.
Secondary and cumulative impacts on land use may result from the proposed project. The
project adds sewer capacity andparcels maybe rezoned or developed as growth continues in
P J P tY P
the Towns of Wilkesboro and Moravian Falls.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
Yes IZ Yes
®Not Applicable ❑ Not Applicable _
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
The Town of Wilkesboro's Comprehensive Land Use Plan along Town of Wilkesboro
with the Planning Board will enforce the objectives and strategies of 2008 LUP
the plan to meet the needs of future development growth within the
Town of Wilkesboro.
8

Attachment B-Environmental Assessment
Table 7.5.1. Forest Resources
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.6.
Forest Resources Information Appendix Reference (if applicable): N/A
Existing Conditions
Discuss the type of forest resources on the project site and in the project area
Recent aerial imagery indicates that the project site consists of maintained areas with scattered
planted trees within the Cub Creek WWTP, except for mixed hardwood and pine forested
areas comprising 3.25 acres. Forested areas on the site are patchy and scattered. Two forested
areas are located along an ephemeral drainageway to the west of Synder Street,minimal
forested edges along the Tyson Food treatment basins, and a small portion of hardwoods
located at the edge of the northern project site. Impacts to forested resources are anticipated to
be minimal.
Discuss the types of wildlife habitat on the project site and in the project area.
There are small amounts of habitat available on site for wildlife that include forested areas,
open foraging for birds and bats and other wildlife. Forested areas include the following tree,
shrub and herbaceous species; red maple(Acer rubrum), green ash(Fraxinus pennsylvanica),
tulip poplar(Liriodendron tulipifera), black walnut(Juglans nigra),northern red oak(Quercus
rubra),white oak(Qurecus alba), Mockernut hickory(Carya tomentosa), loblolly pine (Pinus
taeda), Virginia pine(Pinus virginiana), ironwood(Carpinus caroliniana), Chinese privet
(Ligustrum sinense),jumpseed(persicaria virginiana), Virginia creeper(Parthenocissus
quinquefolia) and Christmas fern(Polystichum acrostichoides). Planted scattered trees
included white ash(Fraxinus americana),black walnut,box elder(Acer negundo),hackberry
(Celtis occidentalis)and American beech(Fagus grandifolia). Open areas include maintained
grasses, and early successional herbaceous cover including dogfennel(Eupatorium
capillifolium), wingstem(Verbesina alternifolia),beefsteak plant(Perilla frutescens), and high
bush blackberry(Rubus argutus). Wildlife that may occur on-site could include animals that
are accustomed to noise and disturbance. Mammals may include short-tailed shrew(Blarina
brevicauda),eastern mole (Scalopus aquaticus), eastern cottontail (Sylvilagus floridanus),
opossum (Didelphis virginiana),raccoon(Procyon lotor),gray squirrel (Sciurus carolinensis),
and white-tailed deer(Odocoileus virginianus). Reptiles and amphibians may include black rat
snake(Pantherophis obloletus),black racer(Coluber constrictor),rough green snake
(Opheodrys aestivus), American toad(Bufo americanus), and Fowler's toad(Bufo fowleri).
Bird species include the Northern cardinal (Cardinalis cardinalis), eastern bluebird(Sialia
sialis), Canada goose (Branca canadensis), gray catbird(Dumetella carolinensis)and many
other bird species.
Impacts
Will forest resources ® Yes If Yes, Approximate 0.12(within project
be impacted? ❑ No Quantity(acres): site)
Will SCI impact ® Yes If Yes, Approximate —38 acres
forest resources? ❑ No Quantity(acres): (Potentially,3.5
percent of service
area)
9

Attachment B-Environmental Assessment
Table 7.5.1. Forest Resources
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Describe SCI of the project.
Secondary and cumulative impacts on forest resources may result from the proposed project.
As calculated from the 2019 NLCD,the total forested resources in the service area are 1,052
acres of deciduous, evergreen and mixed forest types. The project adds sewer capacity, and it
is anticipated future subdivision and business growth will occur in the service area in the
Town of Wilkesboro and the Town of Moravian Falls into the future. An analysis of forested
cover in the service area between 2001 and 2019 NCLD shows there was a net loss of
approximately 38 acres of forested lands in the past 18 years,representing a 3.5 percent
decrease in forested area. If we assume a similar percent loss of forested area in the
foreseeable future in the service area,there would be a net loss of approximately 37 acres of
forested area. The proposed project could potentially spur the removal of deciduous, evergreen
and mixed forested area in the service area that provide wildlife habitat, carbon storage,
reduced runoff,water storage and other ecosystem services. Secondary and cumulative
benefits associated with the project is the planting of 2,100 tree seedlings along the banks of
Cub Creek. This project is part of the stream restoration adjacent to the WWTP and will
increase forested area in the vicinity of the WWTP and service area.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
❑ Yes ® Yes
®Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
The Town of Wilkesboro has a Tree Ordinance, Subdivision Town of Wilkesboro
Ordinance, and Zoning Ordinance that require trees and landscape Tree Ordinance
materials in regulated spaces. Additionally,the Historic Preservation (Chapter 96); '
Commission Design Guidelines protect historic trees that are Subdivision
surrounding historic properties. The Town of Wilkesboro states in Ordinance. Historic
their Subdivision Ordinance, "Streets and development sites shall be Preservation
designed to protect and preserve,to the greatest extent practicable, Commission Design
stands of mature trees and other areas of significant natural Guidelines; Wilkes
vegetation". The County Subdivision Ordinance can require 50-foot- County Subdivision
wide vegetation buffer strips between highways, commercial Ordinance
development and railroads and subdivisions which can protect
forested resources and mitigate unnecessary tree cutting.
10

Attachment B-Environmental Assessment
Table 7.6.1. Wetlands and Streams
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.7 of the guidance.
Wetlands and Streams Figure Reference Number: Figure 3
Wetlands and Streams Information Appendix Reference (if N/A
applicable):
Existing Conditions
Are wetlands present on the project site and Are streams present on the project site and in
in the project area? the project area?
❑ Yes ® Yes
® No ❑ No
If so, discuss the type, quality,function, and relative importance of wetlands and identify any
streams.
A field survey of the proposed project was performed on September 9, 2021 and a desktop
review of the proposed project area was done in October 2021. The review was for
jurisdictional waters(wetlands and streams) of the U.S. under Section 404 of the Clean Water
Act. A potential non jurisdictional, ephemeral stream is located on the project site and is
illustrated on Figure 3. Review of the National Wetland Inventory(NWI)Mapper revealed
that there were no wetlands within the Town of Wilkesboro and Tyson Foods parcels. Cub
Creek, adjacent to the site, is illustrated on the NWI and an ephemeral stream(non-
jurisdictional)was located to the east of Synder Street.
The desktop review resulted in three jurisdictional streams(Cub Creek,Little Cub Creek, and
an unnamed tributary(UT)to Cub Creek)located near the project area. Cub Creek and its
tributaries have a North Carolina Division of Water Resources (NCDWR)stream
classification of C and a stream index of 12-41. Little Cub Creek has a stream classification of
C, and a stream index of 12-41-(2). The project site is located within the Yadkin Pee Dee
River Basin. None of the streams are within the limits of disturbance for the project and
should not be impacted.
Have delineations occurred? If so, supply the date.
® Yes ❑ No September 9, 2021
Impacts
Will wetlands be n Yes If Yes, Quantity
impacted? ® No (acres):
Will streams be ❑ Yes If Yes, Quantity
impacted? ® No (linear feet):
Will SCI impact 7] Yes If Yes, Approximate Not quantifiable
wetlands? No Quantity(acres):
Will SCI impact M Yes If Yes, Approximate Not quantifiable
streams? No Quantity(linear feet):
11

Attachment B-Environmental Assessment
Table 7.6.1. Wetlands and Streams
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Describe Direct Impacts of the project(construction and operational impacts). If there will be
any stream/wetland crossings, complete Table S.9.a in addition to the description.
Direct impacts to streams/wetlands related to construction and operation are not anticipated.
Describe SCI of the project.
Wetlands and streams fall under the authority of the Clean Water Act(CWA) Sections 401
and 404. Any impacts to wetlands and streams resulting from secondary and cumulative
impacts would have to be permitted under Section 401 and 404 of the CWA. In addition to the
Federal (404)and State(401)permitting,the Wilkes County Watershed Ordinance is in place
to protect the quality of drinking water for Wilkes County by setting standards for
development that occurs within designated Public Water Supply Watershed areas. The intent
of the ordinance is to protect critical environmental areas and would reduce impacts to
wetlands and streams through a lower density development requirement.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
❑ Yes ® Yes
®Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Description Reference(s)
g P
Sediment and erosion control measures/plans, as required by state NC Sediment Pollution
and local regulations,have been approved and will be employed Control Act of 1973,
throughout the duration of the project to reduce sediment migration NPDES stormwater
beyond the limits of disturbance, including migration to regulations
downstream waters. Wilkes County
Within portions of the service area that are designated WS-IV- Watershed Ordinance
Critical Area around the W. Kerr Scott Reservoir,the County
Watershed Ordinance for Wilkes County will be followed for
allowable uses and density of dwelling requirements.
12

Attachment B-Environmental Assessment
Table 7.6.2. StreamlWetland Crossings
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Wetland Crossings (add rows as needed; include all crossings even if impact is zero acres.)
Stream and Wetlands Crossing Figure Reference Number: gure 3
Stream and Wetlands Crossing Information Appendix Reference N/A
(if applicable):
#Keyed to Map Diameter& Type of Sewer Installation Method Acres Impacted
N/A
Total Wetland Impacts(acres): 0
Stream Crossings (add rows as needed; include all crossings even if impact is zero feet.)
#Keyed to Map Diameter& Type of Sewer Installation Method Linear Feet
Impacted
N/A
Total Stream Impacts (feet): 0
13

Attachment B-Environmental Assessment
Table 7.7.1. Water Resources
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.8.
Water Resources Appendix Information Appendix Reference Appendix E
(if'applicable):
Existing Conditions
River basin(s)for project: Yadkin Pee Dee (HUC 12: 030401010307)
List all stream(s)found within the project site and greater project area.
Name Classification Impaired? Reason for Impairment
Cub Creek C ® Yes ❑ No Poor fish community
Little Cub Creek C ❑ Yes ® No N/A
Yadkin River C ❑ Yes ® No N/A
Discuss groundwater quality and quantity.
Aquifers of the Piedmont are comprised of localized, complex, and fractured metamorphic,
igneous, and sedimentary(Triassic Basin)rocks (Duncan and Peace 1966). The rocks are
typically overlain by regolith,which includes soil, saprolite, alluvium, and colluvium. Most of
the groundwater is stored in the shallow,porous regolith. The crystalline bedrock has
extremely low porosity,however, secondary fractures contain groundwater, which are
recharged by the overlying regolith(USGS 2017). In general,regional groundwater sources
are inconsistent in the aquifers of the Piedmont and Blue Ridge provinces because of the local
nature of aquifer recharge and discontinuous fractured systems. While groundwater occurs
both in the porous, shallow regolith(below the water table) in large diameter bored wells, and
in fractures in the deeper crystalline bedrock in drilled wells (6-10 inches in diameter),some
types of rock have lower comparable yields than other rock types and extracting enough
groundwater to sustain supply needs can be difficult. The water table in lower topographic
settings,such as near streams(generally considered groundwater discharge areas), is shallower
than in high elevation topographic settings, such as on mountain tops. In some topographic
high areas,the shallow regolith may be dry, and groundwater may only be found in the deeper
bedrock.
Current groundwater levels for Wilkes County were available online from the NC Department
of Environmental Quality Division of Water Resources. The current water levels below land
surface in Wilkesboro is 11.61feet.
14

Attachment B-Environmental Assessment
Discuss surface water quality.
The project site and greater project area are in the Yadkin River Basin. The project is in the
Cub Creek-Yadkin River(HUC 030401010307)watershed.
Cub Creek, Little Cub Creek and the unnamed tributary to Cub Creek are classified as C
waters. The NCDWR defines C waters as "protected for uses such as secondary recreation,
fishing, wildlife,fish consumption, aquatic life including propagation, survival and
maintenance of biological integrity, and agriculture. Secondary recreation includes wading,
boating, and other uses involving human body contact with water where such activities take
place in an infrequent, unorganized, or incidental manner."
Section 303(d)of the Clean Water Act(CWA)requires States to develop a list of waters that
are impaired and do not meet water quality standards. NCDWR prioritizes these water bodies
to prepare management strategies know as a Total Maximum Daily Load(TMDL)for the
listed waters. Cub Creek(AU# 12-41)located adjacent to the project area is meeting criteria
for fish community(Nar, AL, FW) on the Final 2020 303(d)List. Downstream of the WWTP,
which discharges to the Yadkin River upstream of High Rock Lake,will receive nutrient limits
(which are not currently limited)with this project based on speculative limits letter dated
October 28, 2020 (Appendix E). These limits are based on the initial nutrient management
strategy for High Rock Lake (Assessment Units 12-(108.5)b3, 12-(108.5)b4, 12-(114)a, 12-
(114)bl, 12-(114)b2, 12-(114)b3, 12-(124.5)a), which is considered impaired for Chlorophyll
a and pH(both related to nutrients and the resulting algal blooms). High Rock Lake is in
Subbasin HUC: 03040103 of the Yadkin- Pee Dee River Basin. Appendix E includes pages
from the 2020 Integrated Report by the Division of Water Resources that document the
impairment in these assessment units. A TMDL has not yet been developed as the Division of
Water Resources is currently proceeding with rule making for a specific Chlorophyll a
standard for High Rock Lake;the TMDL development will follow this rule making. All point
sources in the High Rock Lake watershed will eventually receive nutrient limits. The nutrient
limits in the speculative limits letter(October 28, 2020 letter from Town Manager)and the
proposed nutrient removal treatment process are a result of the nutrient management strategy
and will specifically address the Chlorophyll a, and pH impairments.
A 1-mile upstream portion of Cub Creek(0.5 miles upstream of S.R. 2460 bridge to S.R. 1001
bridge)within Cub Creek Park and further upstream is considered hatchery supported trout
waters. This section of Cub Creek is part of the N.C. Wildlife Resources Commission's
Mountain Heritage Trout Waters(MHTW)to provide quality trout fishing opportunities as a
heritage tourism activity in western North Carolina cities designated as a"Mountain Heritage
Trout Water City".
To improve water quality the project will remove aeration basins from their current location in
the floodplain of Cub Creek. This action will help improve the water quality of Cub Creek and
downstream to High Rock Lake by preventing contamination during overflow events. The
project will also provide an environmental benefit through the replacement and upgrade of
treatment works. This will help to prevent bypasses that have occurred in the past.
LGU water supply(ies): Yadkin River
15

Attachment B-Environmental Assessment
Impacts
Discuss construction impacts related to surface water quality and groundwater
quality/quantity.
Minimal to no impacts to surface water resources would occur from grading and construction
activities associated with the proposed project. The stream restoration construction along both
banks of Cub Creek at the WWTP will entail planting 2,100 tree seedlings which will create a
more robust stream buffer system that will filters nutrients and stabilize the steam banks. A
sediment and erosion control plan would be approved by the NC Division of Energy, Mineral
and Land Resources (DEMLR).
No impacts to groundwater resources are anticipated during construction.
Discuss operational impacts related to surface water quality and groundwater
quality/quantity.
No operational impacts to surface water quality and groundwater quality/quantity are
anticipated.
•
1
16
1

Attachment B-Environmental Assessment
Describe SCI of the project.
With the increase of sewer capacity population density may increase potentially impacting
water resources in the service area. Streams may experience increased runoff and scour and
subsequent reduced water quality from increased impervious surfaces related to development
projects in the service area. Wilkes County Watershed Ordinance is in place to protect the
quality of drinking water for Wilkes County by setting standards for development that occurs
within designated Public Water Supply Watershed areas. The intent of the ordinance is to
protect critical environmental areas. Secondary and cumulative impacts on water resources
will be protected through this ordinance.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
• Yes ® Yes
❑Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
Sediment and erosion control measures, as required by state Sedimentation Pollution
and local regulations,must be approved prior to ground Control Act of 1973
disturbance, and would be employed throughout the Title 15A Chapter 4:
duration of the project to limit erosion, soil loss, and the Sedimentation Control
possibility of surface water contamination. Disturbed soils Wilkes County Watershed
would be stabilized with appropriate seed mixes after Ordinance
construction is completed.
Within portions of the service area that are designated WS-
IV- Critical Area around the W. Kerr Scott Reservoir,the
County Watershed Ordinance for Wilkes County will be
followed for allowable uses and density of dwelling
requirements.
17

Attachment B-Environmental Assessment
Table 7.8.1. Shellfish, Fish, and Their Habitats
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.9.
Shellfish, Fish, and Their Habitats Information Appendix Reference
(if applicable):
Existing Conditions
Are T&E species present within the project site, the project area, or downstream from the
project?
❑ Yes ® No
If Yes, list all aquatic T&E species located in the waterbodies within the project site, in the
project area, and downstream of the project site. Show approximate location(s) on the
Environmental Features Figure.
Aquatic T&E Species Figure Reference Number(if applicable): N/A
Approximate Location
(e.g., 5 mi. NE of
Common Name Scientific Name Status Project)
N/A
Discuss shellfish and fish habitat. (Not just T&E species.)
The named streams within the vicinity are perennial second or third order streams which can
provide habitat for shellfish and fish if the water quality is sufficient to support the species.
These streams provide free-flowing,warm-water habitats with moderate gradients, generally
alternating pools and riffles, and substrates consisting gravel, sand, and silt. Important to note,
Cub Creek is not found on the Final 2020 303(d) List from its source to the Yadkin River. Cub
Creek is on the 303(d)list for poor fish community.
According to the North Carolina Natural Heritage Program(NCNHP)database review there
were two records for rare species(crayfish(Cambarus johni), and mayfly(Macdunnoa
brunnea)). No natural areas were documented within a one-mile radius of the project area.
The information provided stated there is one managed area within the project area(Town of
Wilkesboro Open Space). The managed areas located within a one-mile radius of the project
area are: Wilkes County Open Space, four(4)Town of North Wilkesboro Open Spaces, Town '
of North Wilkesboro Open Space - Highland Park,two (2)Town of Wilkesboro Open Spaces,
three (3)Wilkes County Open Spaces, and the NC Land and Water Fund Conservation Area.
Impacts
Discuss any impacts to threatened and endangered species.
The US Fish and Wildlife Service (USFWS)and NCNHP databases indicates there are no
known occurrences of aquatic threatened or endangered species located within the project site.
Therefore, no direct impacts to aquatic threatened or endangered species are anticipated.
18

Attachment B-Environmental Assessment
Discuss construction impacts related to fish, shellfish, and their habitats.
Construction of the project would not result in temporary disturbances to shellfish, fish,and
their habitats since there are no streams within the limits of disturbance and the installation
and routine inspection of sediment and erosion control devices would protect against
sedimentation to nearby surface waters.
Discuss operational impacts related to fish, shellfish, and their habitats.
No operational impacts to fish, shellfish, and their habitats are anticipated.
Describe SCI of the project.
With the increase of sewer capacity population density may increase potentially impacting
water resources in the service area. Degradation of water quality and aquatic habitats may
impact aquatic resources and fish communities. The proper use of erosion and sediment
control will help minimize the impacts from sediment in the riparian zones. Additionally,the
Wilkes County Watershed Ordinance is in place to protect water quality for Wilkes County by
setting standards for development that occurs within designated Public Water Supply
Watershed areas. The intent of the ordinance is to protect critical environmental areas.
Mitigative Measures
Mitigative Measures for Construction Mitigative Measures for SCI?
Impacts?
® Yes ® Yes
❑Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
Sediment and erosion control measures, as Sedimentation Pollution Control Act of
required by state and local regulations,must be 1973 Title 15A Chapter 4: Sedimentation
approved prior to ground disturbance, and would Control
be employed throughout the duration of the Wilkes County Watershed Ordinance
project to limit erosion, soil loss, and the
possibility of surface water contamination.
Disturbed soils would be stabilized with
appropriate seed mixes after construction is
completed.
Within portions of the service area that are
designated WS-IV-Critical Area around the W.
Kerr Scott Reservoir,the County Watershed
Ordinance for Wilkes County will be followed for
allowable uses and density of dwelling
requirements.
19

Attachment B-Environmental Assessment
Table 7.9.1. Wildlife and Natural Vegetation
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.10.
Wildlife and Natural Vegetation Information Appendix Reference Appendix E
(if applicable)
Existing Conditions
Are T&E species present within the project site, or project area?
El Yes ® No
If Yes, list all terrestrial T&E species located in the project site or project area. Show
approximate location(s) on the Environmental Features Figure.
Terrestrial T&E Species Figure Reference Number(if applicable): Appendix E
Approximate Location
Common Name Scientific Status (e.g., 5 mi.NE of
Name
Project)
Myotis grisescens Gray bat E NA-ECOS- IPAC
listing
Myotis septentrionalis Northern long- T NA-ECOS IPAC
eared bat listing
Glyptemys muhlenbergii Bog turtle T(S/A) NA-ECOS IPAC
listing
Discuss the wildlife and vegetation present in the project site and project area. (Not just T&E
species.)
The project site is located near the riparian corridor of Cub Creek, Yadkin River and its'
tributaries. Riparian corridors offer valuable habitat for wildlife providing food, cover, and
travel corridors for a number of game species including deer,rabbit, and non-game species
including migratory songbird. Existing land use on the project site is a limiting factor for
wildlife species and abundance, especially since the riparian corridor on the site is maintained.
The majority of the project site is mowed and maintained which minimizes natural vegetation
and limits the habitat for wildlife; however scattered patches of forested areas exist along an
ephemeral drainage area and at the northern portion of the project site. Additional information
on wildlife and vegetation was discussed previously in Table 7.5.1.
Species review results of the N.C. Natural Heritage biotics database report and USFWS ECOS
IPaC consultation review are listed in Appendix E (North Carolina Natural Heritage Program
2021; USFWS 2021). No threatened or endangered species were noted within the limits of
disturbance or within 1 mile of the project site. The USFWS current ranges of two federally
listed bat species and the bog turtle intersect the project site;however, a"No Effect"for gray
bat and bog turtle and a"May Affect Not Likely to Adversely Affect"for the northern long-
eared bat biological determinations were requested from the USFWS Asheville Regional Office
on October 13, 2021. A USFWS letter was received on January 10, 2022. Habitat for the gray
bat and bog turtle does not exist in the project's limit of disturbance and suitable nesting and
foraging habitat for the northern long-eared bat exists in the form of 3.25 acres of forested area
within the project site.
20

Attachment B-Environmental Assessment
Table 7.9.1. Wildlife and Natural Vegetation
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Impacts
Discuss any impacts to threatened and endangered species.
Minimal and negligible forest resource habitat for the northern long-eared bat direct impacts,
0.12 acre, will result from the construction of the project. This is a direct result from the
installation of a sewer pipe with a 40-foot-wide construction corridor that would cross a
forested stand. This sewer pipe connects the Neruda process system to the new headworks at
the Tyson equalizer basins. The NCNHP database indicates there are no known occurrences of
federally threatened or endangered located within the project site or within one mile of the site.
No impacts to federally listed species are anticipated.
Discuss construction impacts related to wildlife and natural vegetation.
It is anticipated terrestrial threatened and endangered species are not expected to be affected
by the construction of the project. Wildlife and natural vegetation would not be significantly
affected by construction activities. The project is mainly located in previously
maintained/disturbed areas with less than 2%coverage of forested resources.
Describe SCI of the project.
Secondary and cumulative impacts on wildlife or natural vegetation could result from the
proposed project due to growth and development within the service area that would cause a
loss of habitat for threatened and endangered species. Urbanization in the service area may
impact wildlife resources through the continued loss,fragmentation of sensitive aquatic and
terrestrial species and their habitats through conversion of land and wetland areas and filling or
piping of streams. A loss in the number of wildlife individuals may occur as fewer and fewer
acres of suitable habitat remain, and this will impact the sustainability of certain species and
decrease species and genetic diversity. See Table 7.5.1 for an estimation of forested habitat
loss of 3.5 percent in the service area. A benefit of the proposed project is the removal of the
proposed project infrastructure out of the 100 and 500-year floodplain which will reduce
nutrient loading and protect sensitive and non-sensitive aquatic species downstream of the site.
Another SCI benefit would be the addition of 2,100 tree seedlings that will be planted along
the banks of Cub Creek in the immediate vicinity of the WWTP that will serve as wildlife
niches and resources into the future.
21

Attachment B-Environmental Assessment
Mitigative Measures
Mitigative Measures for Construction Mitigative Measures for SCI?
Impacts?
® Yes ® Yes
❑Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
Tree removal activities will not occur during the USFWS Northern long-eared bat
federally protected northern long-eared bat pup season: 4(d)rule
June through July 31'. Local and state stormwater Sedimentation Pollution Control Act
best management practices(BMPs)will be adhered to of 1973 Title 15A Chapter 4:
by local officials and Town Boards for future Sedimentation Control
development. Within portions of the service area that Wilkes County Watershed Ordinance
are designated WS-IV- Critical Area around the W.
Kerr Scott Reservoir,the County Watershed
Ordinance for Wilkes County will be followed for
allowable uses and density of dwelling requirements.
22

Attachment B-Environmental Assessment
Table 7.10.1. Public Lands and Scenic, Recreational, and State Natural Areas
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.11.
Public Lands and Scenic, Recreational, and State Natural Area Figure Figure 6
Reference Number(if applicable):
Public Lands and Scenic, Recreational, and State Natural Area Appendix E
Information Appendix Reference(if applicable): NCNHP
Managed/Natural
Areas; Town of
Wilkesboro ArcGIS;
USGS PADUS; High
Country Council of
Governments ArcGIS
Existing Conditions
Are public lands and scenic, recreational, and state natural areas found adjacent to or in the
project area?
® Yes ❑ No (then no impact)
If yes, list these areas and show on the Environmental Features Figure
Location
(e.g., 5 mi.NE of
Name Type Project)
*Public lands, scenic, recreational and state natural and managed natural areas are attached in
Appendix E due to 37 records in a 5-mile buffer.
Impacts
If Yes, discuss construction impacts related to public lands, and scenic, recreational, and state
natural areas.
The proposed project would not directly impact designated park land, scenic,recreational
and/or state natural areas. Construction noise may be heard; however,this will be a temporary
impact and the existing vegetation(forest)between the limits of disturbance and the natural
areas will assist with noise abatement. The construction noise will be temporary and will occur
during normal working hours. The Rolling Pines Disc Golf Course access to the public will
not be disturbed since the public parking lot is located to the east of the proposed site on Old
US 421 Road. Important to note, a greenway will be built on the western side of Cub Creek
and is part of a stream restoration project that will occur concurrently with the proposed
project.
If Yes, discuss operational impacts related to public lands, and scenic, recreational, and state
natural areas.
Operation of the proposed project would not impact formally designated park land,scenic,
recreational, or state natural areas.
23

Attachment B-Environmental Assessment
Table 7.10.1. Public Lands and Scenic, Recreational, and State Natural Areas
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Describe SCI of the project.
Secondary and cumulative impacts on public lands, scenic, recreational, or state natural areas
would be limited from the proposed project. These areas are valued by the community. Plans
are to connect the existing Lowe's Trailhead to Cub Creek greenway with the proposed stream
restoration adjacent to the WWTP. There are future plans to extend the connection to Cub
Creek Park which is located upstream. These connections would provide an amenity for the
community to enjoy these riparian corridors and parklands.
Mitigative Measures
Mitigative Measures for Construction Mitigative Measures for SCI?
Impacts?
❑ Yes ❑ Yes
®Not Applicable ® Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
N/A N/A
24

Attachment B-Environmental Assessment
Table 7.11.1. Areas of Archaeological or Historical Value
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.1.12.
Archaeological or Historical Area Figure Reference Number(if Figure 7
applicable):
Archaeological or Historical Area Information Appendix Reference Appendix E
(if applicable):
Existing Conditions
Are areas of archaeological or historical value in the project site,project vicinity, or project
area?
® Yes ❑ No (No Impact)
Ifyes, list these and show on the Environmental Features Figure
Location
(e.g., 5 mi.NE of
Name Type Project)
*Historical properties are attached in Appendix E due to 228 records in a 5-mile buffer.
Archaeology sites in table below and all archaeological and historical sites are illustrated in
Figure 7.
31WK14 Native American nondiagnostic ceramic and -0.5 mi. NW of Project
lithic scatter
31WK71 Unknown -0.8 mi. W of Project
31WK186 Native American nondiagnostic lithic scatter -1 mi. SW of Project
31WK197 Native American Woodland Period ceramic and -1 mi. W of Project
lithic scatter
31WK198 Native American Archaic and Woodland Period -1 mi. W of Project
ceramic and lithic scatter
25

Attachment B-Environmental Assessment
Impacts
If Yes, discuss construction impacts related to areas or archaeological or historical value?
A review of the National Register of Historic Places (NRHP)GIS Web Service (National
Register of HP Mapper)found the Downtown Wilkesboro Historic District within the Project
Area(1 mile of the site). The N.C. Historic Preservation Office(NCHPO) HPOWEB GIS
Web Service(http://gis.ncdcr.gov/hpoweb/)indicated 192 sites within 1 mile of the project site
as noted in Appendix E and on Figure 7.
The N.C. Office of State Archaeology(OSA)was contacted to gather previously conducted
archaeological surveys and reports occurring within one mile of the proposed project.
Additionally a concurrence letter was sent to SHPO on October 13, 2021 and November 18,
2021 a letter was received concluding SHPO is aware of no historic resources that would
affect the project. This data is not publicly available due to its sensitivity and Appendix E
shows the locations of surveys within one mile.No previous surveys have occurred within the
proposed project, however several surveys have been completed within one mile of the
proposed project. These projects are listed in references cited in Appendix E. There are five
previously recorded archaeological sites within one mile of the proposed project. Due to the
existing disturbance at the proposed project site, it is unlikely there would be impacts to any
intact archaeological resources with the proposed project.
If Yes, discuss operational impacts related to areas of archaeological or historical value.
Operation of the proposed project would not impact areas of archeological or historic value.
Describe SCI of the project.
Secondary and cumulative impacts on archaeological or historical sites may result from the
proposed project but are unlikely. The project's additional sewer capacity within the service
area could in the future indirectly impact archaeological or historical sites that may be adjacent
to or on land that are slated for new development or redevelopment within the service area.
These indirect impacts could result in inadvertently uncovering an unknown cemetery or a pre-
historic site along a large river or creek. The Town and County will negotiate protection of
historic resources during the local development process.
Mitigative Measures
Mitigative Measures for Construction Mitigative Measures for SCI?
Impacts?
❑ Yes ® Yes
®Not Applicable ❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
A goal of the Historic Preservation Commission Design Town of Wilkesboro
Guidelines is to protect the historic resources in Wilkesboro's Historic District Design
Historic District through the Historic Preservation Committee Guidelines
(HPC).
26

Attachment B-Environmental Assessment
Table 7.12.1. Air Quality
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete the table in accordance with Section 12.2.13.
Air Quality Information Appendix Reference (if applicable): N/A
Existing Conditions
Discuss the general air quality and identify current sources of emissions from the project and
surrounding area. Note whether odors have been a problem.
The proposed project is located in Wilkes County,which is currently designated by the
Environmental Protection Agency(USEPA)as being in attainment with all National Ambient
Air Quality Standards(NAAQS). An attainment area is any area that meets the national
primary or secondary ambient air quality standard for a NAAQS.
Sources of emission from the proposed project would be related to construction equipment and
would cease after the completion of the project.
Impacts
Discuss construction impacts related to air quality.
Sources of emission from the proposed project would be related to construction equipment and
would be temporary and cease after the completion of the project.
Will open burning occur? If Yes, describe what will be burned.
❑ Yes N/A
® No
Discuss operational impacts related to air quality.
Operation of the proposed project may temporarily impact air quality during testing or use of
emergency generators. Otherwise,the project would not result in new air pollution sources.
Describe SCI of the project.
Secondary and cumulative impacts on air quality will not result from the proposed project.
The project increases sewer capacity but the addition of expanded growth and development in
the service area in the form of added sewer line construction, increased population, and traffic
and smog would be negligible.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
® Yes ❑ Yes
❑Not Applicable ® Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
Dust control measures would be employed and burning of material Clean Air Act;No
would not be permitted. Construction equipment would comply with burning and dust
meeting existing emission standards. control measures to be
placed in bid
documents
27
1

Attachment B-Environmental Assessment
Table 7.13.1. Noise Levels
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.14.
Noise Level Information Appendix Reference (if applicable): N/A
Existing Conditions
Discuss the current noise levels for the project site and project area.
Elevated noises levels have been documented as negatively affecting human health and
welfare. Existing sources of noise within the project site and project area include operation of
the existing facility,traffic along nearby roadways, and other day-to-day noise representative
of the residential,business, industrial and forested land uses.
Federal, state, and local governments have established noise standards and guidelines to
protect citizens from potential hearing damage and various other adverse physiological and
social effect associated with noise.
Does the LGU have noise ordinances ® Yes
in place? ❑ No
If yes, describe. Town of Wilkesboro, Noise Ordinance
The use or operation of any vehicle (automobile,
truck, motorcycle, dirt bike, go-cart, recreational
vehicle, etc.)or internal combustion engine, between
the hours of 10:00 P.M. and 7:00 A.M., which is so
out of repair, so loaded, operated with inadequate
mufflers, or operated in such a manner as to create a
disturbing noise in a residential area.
Impacts
Discuss construction impacts related to noise levels. If noise levels will increase, discuss when
they will be heard and at what distance.
Construction would temporarily increase noise levels during working hours (most likely
weekdays from 7:00 am to 6:00 pm). Night work is not anticipated. Noise levels would return
to preconstruction levels once construction is complete.
29

Attachment B-Environmental Assessment
Table 7.13.1. Noise Levels
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Discuss operational impacts related to noise levels.
Operational noise impacts would increase minimally at a few locations across the project site.
At the influent pump station,the existing three submersible pumps would be replaced, and a
fourth pump would be installed. Since these pumps are submersible there is minimal operating
noise and noise levels would remain similar to the present conditions. The waste sludge pumps
will be replaced with new pumps and noise levels are anticipated to remain similar to existing
conditions. The Neruda system blowers, as part of the new biological process,will include five
250 Hp blowers,in which one will be installed as a spare. Noise levels from these units can be
high and will be the largest increase in noise levels at the site. The Neruda system blowers will
be enclosed to reduce the generated noise. Additionally,the Aerzen blower units
manufacturer's product notes state the technology uses an optimized acoustic hood, an
1 integrated pulsation reduction process, and will comply with noise level regulations near
populated areas. The headworks structure and effluent filters,which may or may not be
installed, will have fairly small electric motors and associated noise levels will be minimal.
The proposed sludge dewatering units will replace an existing unit and a parallel one will be
installed. These units are located inside an existing building and noise levels are anticipated to
remain the same. A standby generator, if installed, will be a large diesel engine that will be
tested every week and would operate during power outages. Noise levels would increase for
short periods of time during testing and during emergencies but would not increase overall
ambient noise levels at the site. The additions of these new technologies, and additional
expansion features are anticipated to minimally increase noise levels at the project site.
Forested areas surrounding the project site create natural noise buffers that would negate
minimal noise increases for residences adjacent to the project site(all residences over 500 feet
away) and recreational users of the Rolling Pines Disc Golf Course.
Describe SCI of the project.
Secondary and cumulative impacts on noise levels may result from the proposed project.
Since the project adds sewer capacity indirect and cumulative noise effects could include:
temporary construction noise from additional sewer lines,temporary residential,industrial,
and business construction, and the increase in baseline noise through the addition of industry,
business and residential growth.
Mitigative Measures
Mitigative Measures for Construction Impacts? Mitigative Measures for SCI?
® Yes ® Yes
❑Not Applicable ❑ Not Applicable
30

Attachment B-Environmental Assessment
Table 7.13.1. Noise Levels
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
Construction would occur during normal working hours on weekdays Town of Wilkesboro—
from 7 am to 6 pm. Noise Ordinance
Wilkes County's High Impact Land Use Ordinance promotes the Wilkes County
health, safety and general welfare of the citizen of Wilkes County High Impact Land Use
from objectionable noises, odors,vibrations,fumes and other impacts Ordinance
on adjacent land of unincorporated areas of Wilkes County.
31

Attachment B-Environmental Assessment
Table 7.14.1. Introduction of Toxic Substances
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Introduction to Toxic Substances Appendix Reference (if applicable): N/A
Impacts
Discuss any toxic substances that may be introduced during project construction and
operation in accordance with Section 12.2.15.
Toxic substances would be controlled during the construction and operation of the Cub Creek
Wastewater Treatment Plant Upgrades and Expansion project. Fuel, oil, and lubricants for
construction equipment would be located in a predetermined area,and any spills would be
contained and controlled. Equipment would be properly maintained to prevent leakage.
Concrete would be prevented from entering any streams or surface water drainages. Other
chemicals and cleaners would be controlled on the construction site in similar manner. These
measures would be included in construction specifications and compliance would be
confirmed through the construction management engineers. Chemicals currently used on-site
would be controlled and maintained as they are currently used to ensure a safe water supply.
Mitigative Measures
Mitigative Measures for Construction Impacts?
® Yes
❑ Not Applicable
Describe the mitigative measures below and supply references to the appropriate appendix in
the EID.
Mitigative Measure Description Reference(s)
Proper maintenance of equipment, proper storage of chemicals, and a N/A
spill pollution and prevention plan for construction activities as well
as for the facility.
32

Attachment B-Environmental Assessnent
Table 7.15.1. Environmental Justice Analysis
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table in accordance with Section 12.2.16.
Was the U.S.Environmental Protection Agency's Environmental Justice Geographic ®Yes
Assessment Tool used? El No
If No,then complete the Existing Conditions cells below.
Environmental Justice Figure Reference Number(s): N/A
Environmental Justice Information Appendix Reference(if applicable): E
Existing Conditions
Provide the following information and key the Block Groups to the map in the EID.Include figures.
Census Percent Significant Percent Low- Significant Low
Census Block Total Minority Minority Minority Low-Income Income Income
County Tract Group Population Population Population Population? Population Population Population?
Wilkes
Impacts
Are there any potentially significant environmental justice populations in ❑ Yes ® No
the project area?
If the answer is yes, then below, list the impacts to the minority and/or low-income populations below and whether the impacts are potentially significant If
potentially significant contact the Environmental Assessment Coordinator.
Impact Potentially Significant?
Possible slight temporary increase in air emissions due to the potential for dust and use of ❑ Yes ® No
construction equipment.
Possible slight temporary increase in Noise Levels due to construction equipment and ❑ Yes ® No
potential traffic changes required for construction.
33

Attachment B-Environmental Assessment
Table 7.16.1. Mitigative Measures
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table for all resource categories in accordance with Section 12.2.17.If there was no impact in a particular resource category, then state, "No
Impact."
Mitigative Measure(s)for Mitigative Measures for
Resource Category Potential Direct Impact Direct Impact Potential SCI SCI
Topography&Floodplains Temporary disturbances to Impacts within Zone X and Additional wastewater The utility/engineer will
the existing topography, Zone AE along Cub Creek treatment lines to new adhere to the Town of
including Zone X and Zone will be temporary and above development within the Wilkesboro Sewer Use
AE 100-year floodplain,will ground structures would be service area may occur. This Ordinance to comply with
result from the proposed removed out of the 100-and project will reduce overflow applicable state and federal
project. 500-year floodplain. The and wastewater pollutants laws including the Clean
utility/engineer will from entering Cub Creek Water Act
coordinate with the local during high rainfall and
floodplain administrator to flooding events.
ensure the project complies
with FEMA regulations.
Soils Soils within the project area Sediment and erosion Additional wastewater line NC Sediment Pollution
P l
have been disturbed by control measures,as installation and the indirect Control Act of 1973,
previous construction required by state and local impacts associated with NPDES stormwater
activities. Temporary regulations,would be business/industrial or regulations
disturbance from employed throughout the residential development
construction will occur. duration of the project. within the service area.
Disturbed areas would be
reseeded with vegetation.
Prime&Unique Farmland No Impact N/A Approximately 140 acres of NC Agricultural
actively farmed P&U Development and Farmland
farmland exists within the Preservation Fund
service area and conversion
to other uses will be realized
as future growth progresses
in Wilkes County.
Land Use No Impact N/A Re-zoning and development Town of Wilkesboro
within the service area may Comprehensive Land Use
occur due to the expanded Plan would guide the future
sewer capacity. development within the
service area.
34

Attachment B-Environmental Assessment
Table 7.16.1. Mitigative Measures
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table for all resource categories in accordance with Section 12.2.17.If there was no impact in a particular resource category, then state, "No
Impact"
Mitigative Measure(s)for Mitigative Measures for
Resource Category Potential Direct Impact Direct Impact Potential SCI SCI
Forest Resources Minimal,0.12 acre of Most of the project is within Impact Town of Wilkesboro will
upland forested areas will be existing disturbed/developed adhere to local Tree,
cleared. land. Subdivision and Zoning
Ordinance that require trees
and landscape materials in
regulated spaces. The
Historic Preservation
Commission protects
historic trees on and
adjacent to historic
properties.
Wetlands and Streams No Impact Sediment and erosion Impact The NC Sediment
control measures,as Pollution Control Act of
required by state and local 1973 will regulate
regulations,would be construction during the
employed throughout the project site and future
duration of the project. growth.
The Wilkes County
Watershed Ordinance will
regulate development in
the WS-IV portion of the
service area.
35

Attachment B-Environmental Assessment
Table 7.16.1. Mitigative Measures
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table for all resource categories in accordance with Section 12.2.17.If there was no impact in a particular resource category, then state, "No
Impact"
Mitigative Measure(s)for Mitigative Measures for
Resource Category Potential Direct Impact Direct Impact Potential SCI SCI
Water Resources No impacts to adjacent A sediment and erosion Impact The NC Sediment
water resources are control plan would be Pollution Control Act of
anticipated from grading and submitted to the DEMLR 1973 will regulate
construction activities prior to construction construction during the
associated with the project. project site and future
No impacts to groundwater growth.
quality during construction The Wilkes County
are anticipated. Watershed Ordinance will
No operational impacts to regulate development in
surface water quality and the WS-IV portion of the
groundwater service area.
quality/quantity are
anticipated.
Shellfish,Fish,and their No Impact N/A Impact The NC Sediment
Habitats Pollution Control Act of
1973 will regulate
construction during the
project site and future
growth.
The Wilkes County
Watershed Ordinance will
regulate development in
the WS-IV portion of the
service area.
36

Attachment B-Environmental Assessment
Table 7.16.1. Mitigative Measures
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table for all resource categories in accordance with Section 12.2.17.If there was no impact in a particular resource category, then state, "No
Impact"
Mitigative Measure(s)for Mitigative Measures for
Resource Category Potential Direct Impact Direct Impact Potential SCI SCI
Wildlife and Natural Minimal impact to northern Tree removal would not Impact USFWS northern long-eared
Vegetation long-eared bat habitat;0.12 occur during federally bat 4(d)rule
acre of forested resources protected northern long- The NC Sediment Pollution
would be lost. eared bat pup season: June Control Act of 1973 will
—July 31'. regulate construction during
the project site and future
growth.
The Wilkes County
Watershed Ordinance will
regulate development in the
WS-IV portion of the
service area.
Public Land and Scenic, No Impact N/A No Impact N/A
Recreational,and State Natural
Areas
Areas of Archaeological or No Impact N/A Minimal Impact The Town of Wilkesboro's
Historical Value Local Historic Preservation
District Design Guidelines
will protect the historical
resources in the downtown
historic district.
Air Quality Sources of emission from Dust control measures Minimal Impact Dust control measures
the proposed project would would be employed and would be employed and
be related to construction burning of material would burning of material would
equipment and would be not be permitted. not be permitted.Future
temporary and cease after Construction equipment projects will need to comply
the completion of the would comply with meeting with dust control measures
project. existing emission standards. and the Clean Air Act.
37

Attachment B-Environmental Assessment
Table 7.16.1. Mitigative Measures
Cub Creek Wastewater Treatment Plant Upgrades and Expansion
Town of Wilkesboro
Complete this table for all resource categories in accordance with Section 12.2.17.If there was no impact in a particular resource category, then state, "No
Impact."
Mitigative Measure(s)for Mitigative Measures for
Resource Category Potential Direct Impact Direct Impact Potential SCI SCI
Noise Levels Temporary increases in Construction activities Temporary construction Town of Wilkesboro Noise
noise levels would occur would only occur during noise from: additional sewer Ordinance and the Wilkes
during working hours(most weekdays from 7 am to 6 lines,temporary residential, County High Impact Land
likely weekdays from 7 am pm as described in the Town industrial,and business Use Ordinance
to 6 pm)for the construction of Wilkesboro Noise construction,and the
phase of the project. Ordinance increase in baseline noise
through the addition of
industry,business and
residential growth.
Toxic Substances Toxic materials such a Implement a spill prevention No Impact N/A
vehicle fuels,concrete, plan and control measures
chemicals,or cleaners could such as a predetermined area
be spilled or leach into soil, for construction equipment,
streams or surface water no on-site chemical storage,
drainages. and proper maintenance of
construction equipment.
Environmental Justice N/A N/A N/A N/A
38

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FYZ
October 13, 2021
Mr. Byron Hamstead
U.S. Fish and Wildlife Service
Asheville Ecological Services Field Office
160 Zillicoa Street
Asheville, NC 28801
RE: Threatened and Endangered Species Survey
Proposed Cub Creek Wastewater Treatment Plant Expansion
Wilkesboro, NC
Dear Mr. Hamstead,
HDR Engineering, Inc. of the Carolinas (HDR), on behalf of the Town of Wilkesboro, has
completed a threatened and endangered species survey for the construction activities
associated with the proposed Cub Creek Wastewater Treatment Plant (WWTP) Expansion
Project (study area) as regulated under Section 7 and 9 of the Endangered Species Act of
1973, as amended (Figures 1 & 2). The purpose of this letter is to report the biological
evaluation for federally protected species listed in Wilkes County within the study area.
The Cub Creek WWTP is an existing, aging wastewater treatment facility that currently has
a permitting capacity of 4.9 mgd that will be replaced with an expanded 9 mgd WWTP
utilizing a different treatment regime. Most of the new facilities will be located out of the 500-
year floodplain (existing system is mostly within the 100-year floodplain). There is also an
associated stream restoration project along Cub Creek that will take place in conjunction
with the construction of the new WWTP. The aging Cub Creek WWTP presents significant
challenges in preventing bypasses and violations. In addition, the increase in rainfall that
occurred in 2020 exacerbated this situation. This project will provide an environmental
benefit through the replacement and upgrade of treatment works where a bypass has
occurred that reached surface waters. This project will provide additional capacity and a
more reliable treatment regime with a more rigorous treatment facility with better controls,
redundancy, and better flow equalization. It will also move a significant portion of facilities
out of the floodplain which will provide greater reliability. Figure 1 illustrates the service area
of the Cub Creek WWTP.
An IPaC resource list (September 22, 2021) was pulled from the federal ECOS IPaC for the
study area. Table 1 represents federally listed species within the study area.
hdrinc.cnm
555 Fayetteville Street,Suite 900
Raleigh,NC 27601

Table 1. Federally Listed Species with the Study Area in Wilkes County, North Carolina
Scientific Name Common Name Federal Habitat Record Biological
Status Present Status' Conclusion
Myotis grisescens Gray bat E No NA No Effect
Myotis septentrionalis Northern long-eared bat T Yes Current MANLAA
Glyptemys muhlenbergii Bog turtle T(S/A) No Current No Effect
T(S/A)—threatened due to similarity of appearance.A taxon that is threatened due to similarity of appearance with another listed
species and is listed for its protection.Taxa as T(S/A)are not biologically E or T and not subject to Section 7 consultation.
T(Threatened)-A taxon'likely to become endangered within the foreseeable future throughout all or significant portion of its range"
E(Endangered)—A taxon"in danger of extinction throughout all or a significant portion of its range".
MANLAA—"May affect,not likely to adversely affect"
'NHP County Status(updated August 2,2021)
According to the North Carolina Natural Heritage Program (NCNHP) biotic database report
(dated September 22, 2021), no known populations of these species are located within 1
mile of the Project. On September 9, 2021 a threatened and endangered species
reconnaissance survey was carried out within the study area.
Gray bat habitat was not located on site in the form of caves, cave-like features, bridges,
culverts or dams. Additionally, the areas along Cub Creek are maintained grassy areas
with scattered planted trees for campsites therefore not ideal for gray bat foraging
activities. Due to these results, a biological conclusion of"No Effect" for direct impacts was
reached for this species. Cumulative and indirect impacts within the WWTP service area
may include future industrial, business and residential development which has the
potential to impact cave-like features and create fragmentation of the forested areas
adjacent to large rivers and streams that are feeding sources for the gray bat.
Suitable habitat for northern long-eared bat (NLEB), in the form of 3.25 acres forested
areas with >_ 3" dbh trees was identified within the study area. Since suitable habitat for the
northern long-eared bat is present, tree clearing for the Project will only occur between
August 1st and May 31 st to avoid the pup season (4(d) rule conservation measure). Due to
these results, a biological conclusion of"May Affect, Not Likely to Adversely Affect" was
reached for this species. Cumulative and indirect impacts within the WWTP service area
may include future industrial, business and residential development which has the
potential to reduce forested areas.
Suitable habitat for bog turtle in the form of wetlands was not found within the study area.
Due to these results, a biological conclusion of"No Effect"for direct impacts was reached
for this species. Cumulative and indirect impacts within the WWTP service area may

include future industrial, business and residential development which has the potential to
impact wet meadow and bog wetlands complexes that are used by the bog turtle.
If you have any questions or concerns, please call or email me at your earliest convenience
at [phone], jessica.tisdaleRhdrinc.com.
Sincerely,
Inc. of the
HDR Engineering, nc Carolinas h
Jessica L. Tisdale, CE
Senior Environmental Scientist
555 Fayetteville Street, Suite 900
Raleigh, NC 27601
Attachment:
USFWS ECOS IPaC Report
NHP Report
Figure 1 — Project Vicinity Map
Figure 2 — USGS 24K Wilkesboro Quadrangle Map
Cc: Ken Noland —Wilkesboro Town Manager
Wes Bramlett, HDR
Lara Grotz, HDR

„ENT OF TtiF ,FISH&WIii LIFE
- Z� United States Department of the Interior
7� A
FISH AND WILDLIFE SERVICE
Asheville Field Office
4'4RCH 3 s°c' 160 7.illicoa Street TM”
Asheville,North Carolina 28801
January 10, 2021
Jessica Tisdale
HDR
555 Fayetteville Street, Suite 900
Raleigh,North Carolina 27601
[e-mail]
Subject: Wilkesboro Cub Creek Wastewater Treatment Plant Expansion and Stream Restoration
Project; Wilkes County, North Carolina
Dear Jessica Tisdale:
The U.S. Fish and Wildlife Service (Service)reviewed the information provided in your email
correspondence dated October 13, 2021 wherein you solicit our comments regarding project-
mediated impacts to federally protected species. We submit the following comments in
accordance with the provisions of the Fish and Wildlife Coordination Act, as amended
(16 U.S.C. 661-667e);the National Environmental Policy Act(42 U.S.C. §4321 et seq.); and
section 7 of the Endangered Species Act of 1973, as amended(16 U.S.C. 1531-1543)(Act).
Project Description
According to the information provided,the proposed action would entail the expansion of the
Cub Creek Wastewater Treatment Plant in Wilkesboro, North Carolina from 4.9 million gallons
per day(mgd) capacity to 9.0 mgd capacity. It is unclear if the proposed action would result in
the expansion of the existing service area for this utility. Beyond providing locations for the
proposed plant expansion and the existing service area of the utility,the information provided
did not identifythe federal action agency, did notprovide a site development 1 or identify
P P
proposed measures to avoid and/or minimize impacts to natural resources.
Your correspondence indicates that the proposed action would also entail a stream restoration
project on Cub Creek,but no further description of this activity has been provided at this time.
Federally Listed Endangered and Threatened Species
According to your correspondence, suitable summer roosting habitat is present in your study area
(Figure 2 of your correspondence), for the federally threatened northern long-eared bat(Myotis
septentrionalis). The final 4(d)rule, (effective as of February 16, 2016)exempts incidental take
of northern long-eared bat associated with activities that occur greater than 0.25 miles from a
known hibernation site, and greater than 150 feet from a known, occupied maternity roost during
the pup season(June 1 —July 31). Based on the information provided,the project would occur at
a location where any incidental take that may result from associated activities is exempt under
the 4(d)rule for this species. Although not required, we encourage the Applicant to avoid
associated tree clearing activities during this animal's active season from April 1 —October 15.

We acknowledge that your September 9, 2021 site reconnaissance within the study area
boundaries did not detect suitable habitats for any other federally listed species at that time.
We appreciate your consideration for potential indirect and cumulative impacts that may result
from the proposed action. We agree that the proposed project is reasonably certain to facilitate
future development within the existing service area(Figure 1 of your correspondence)which
may result in habitat loss for the federally endangered gray bat. This animal roosts in caves
and/or cave-like structures (bridges, culverts, dams, buildings)year-round. This animal also
forages and commutes along forested riparian areas of large rivers during the active season
(March 15 —November 15). We encourage the Applicant to consider implementing measures
to avoid impacts to these habitats.
In accordance with the Act, it is the responsibility of the appropriate federal action agency or its
designated representative to review its activities or programs and to identify any such activities
or programs that may affect endangered or threatened species or their habitats. If it is
determined that the proposed activity may adversely affect any species federally listed as
endangered or threatened, formal consultation with this office must be initiated. Our
concurrence with determinations of"no effect"from action agencies is not required.
The Service appreciates the opportunity to provide these comments. Please contact Mr. Byron
Hamstead of our staff at [e-mail] if you have any questions. In any future
correspondence concerning this project,please reference our Log Number 4-2-21-465.
Sincerely,
- - original signed- -
Janet Mizzi
Field Supervisor
4
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9/22/21,11:45AM IPaC:Explore Location resources
IPaC U.S. Fish & Wildlife Service
IPaC resource list
1 This report is an automatically generated list of species and other resources such as critical habitat
(collectively referred to as trust resources) under the U.S. Fish and Wildlife Service's(USFWS)
jurisdiction that are known or expected to be on or near the project area referenced below. The list
may also include trust resources that occur outside of the project area, but that could potentially be
directly or indirectly affected by activities in the project area. However, determining the likelihood
and extent of effects a project may have on trust resources typically requires gathering additional
site-specific(e.g., vegetation/species surveys)and project-specific(e.g., magnitude and timing of
proposed activities) information.
Below is a summary of the project information you provided and contact information for the U
office(s)with jurisdiction in the defined project area. Please read the introduction to eac se n
that follows(Endangered Species, Migratory Birds, USFWS Facilities, and NWI Wet d4,„
additional information applicable to the trust resources addressed in that se ' n.
Project information
\.. \°°41°11S
NAME
Cub Creek Wastewater Treatment Plant(WWTP
LOCATION0
Wilkes County, North Carolina0
'
a,
P S'l
\A
s, iJ
1
I
i
1
DESCRIPTION I
Some(The WWTP is reaching its permitted capacity and upgrading and expanding the treatment
capacity of the facility is planned.) I
1
Local office
Asheville Ecological Services Field Office I
t. [phone]
https://ecos.fws.govlipac/project/NXBFHNE6CZAYBOA777UGG3EFLY/resources 1/11

9/22/21,11:45 AM IPaC:Explore Location resources
la [phone]
160 Zillicoa Street
Asheville, NC 28801-1082
hit p://www.fws,gov/nc-es/es/countyfr.htmI
1
011111411\
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1 https://ecos.fws.govlpac/project/NXBFHNE6CZAYBOA777UGG3EFLY/resources 2/11

9/22/21, 11:45AM IPaC: Explore Location resources
1
Endangered species
I
This resource list is for informational purposes only and does not constitute an analysis of
project level impacts.
The primary information used to generate this list is the known or expected range of each species.
Additional areas of influence (AOI)for species are also considered.An AOI includes areas outside of
the species range if the species could be indirectly affected by activities in that area (e.g., placing a
dam upstream of a fish population even if that fish does not occur at the dam site, may indirectly
impact the species by reducing or eliminating water flow downstream). Because species can move,
and site conditions can change,the species on this list are not guaranteed to be found on or near
the project area. To fully determine any potential effects to species, additional site-specific and;,,
project-specific information is often required.
Section 7 of the Endangered Species Act requires Federal agencies to "request of the Secretary
information whether any species which is listed or proposed to be listed may be.present in the area
of such proposed action" for any project that is conducted, permitted,funded,,or Ucensed by any
Federal agency.A letter from the local office and a species list which fulfills this requirement can
only be obtained by requesting an official species list from either the Regulatory Review section in
IPaC(see directions below) or from the local field office directly. ...
For project evaluations that require USFWS concurrence/review, please return to the IPaC website
and request an official species list by doi the following:
1. Log into IPaC.
2. Go to your My Projects list.
3. Click PROJECT HOME fdr th oje t.
4. Click REQUEST SPECIES LIS
Listed species1 and their critical habitats are managed by the Ecological Services Program of the U.S.
Fish and Wildlife Service (USFWS) and the fisheries division of the National Oceanic and Atmospheric
Administration (NOAA Fisheries).
Species and critical habitats under the sole responsibility of NOAA Fisheries are not shown on this
list. Please contact NOAA Fisheries for species under their jurisdiction.
1. Species listed under the Endangered Species Act are threatened or endangered; IPaC also shows
species that are candidates, or proposed, for listing. See the listing status page for more
information. IPaC only shows species that are regulated by USFWS (see FAQ).
2. NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an office of the
National Oceanic and Atmospheric Administration within the Department of Commerce.
The following species are potentially affected by activities in this location:
Mammals
NAME STATUS
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Gray Bat Myotis grisescens Endangered
Wherever found
No critical habitat has been designated for this species.
ht,itp://ecos.fws,gov/ecp/species/6329
Northern Long-eared Bat Myotis septentrionalis Threatened
Wherever found
No critical habitat has been designated for this species.
http://ecos.fws.gov/ecp.Lpecies/9045
Reptiles
NAME STATUS
Bog Turtle Clemmys muhlenbergii SAT C)14
No critical habitat has been designated for this species.
ht:tp://ecos.fws,gov/ecp/species/6962
6.111C1\
Insects
• NAME \3\rj.°$aSdidae
Monarch Butterfly Danaus plexippus
Wherever found
No critical habitat has been designated for this
http://ecos.fws.gov/ecpap eci es/9743
Critical habitat
C)'
Potential effe o c cal ha itat(s) in this location must be analyzed along with the endangered
species themse es.
THERE ARE NO CRITICAL HABITATS AT THIS LOCATION.
Migratory birds
Certain birds are protected under the Migratory Bird Treaty Act'and the Bald and Golden Eagle
Protection Acts.
Any person or organization who plans or conducts activities that may result in impacts to migratory
birds, eagles, and their habitats should follow appropriate regulations and consider implementing
appropriate conservation measures, as described below.
1. The Migratory Birds Treaty Act of 1918.
2.The Bald and Golden Eagle Protection Act of 1940.
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Additional information can be found using the following links:
• Birds of Conservation Concern http://www.fws.gov/birds/management/managed-species/
birds-of-conservation-concern.0.12
• Measures for avoiding and minimizing impacts to birds
http://www.fws.gov/birds/management/project-assessment-tools-and-guidance/
conservation-measures.p_b,p
• Nationwide conservation measures for birds
http://www.fws.gov/migratorybirds/pdf/management/nationwidestandardconservationmeasures.pdf
The birds listed below are birds of particular concern either because they occur on the USFWS Birds 1
of Conservation Concern (BCC) list or warrant special attention in your project location.To learn
more about the levels of concern for birds on your list and how this list is generated, see the FAQ
below.This is not a list of every bird you may find in this location, nor a guarantee that every bird on
this list will be found in your project area. To see exact locations of where birders and the general /
public have sighted birds in and around your project area,visit the E-bird data mapping tc5ol i11;,
enter your location, desired date range and a species on your list). For projects th t u offI;he
Atlantic Coast, additional maps and models detailing the relative occurrence and abundance of bird r
species on your list are available. Links to additional information about Atlantic Coast birds, and
other important information about your migratory bird list, including how to properly interpret and
use your migratory bird report, can be found below.
For guidance on when to schedule activities or implement avoidance and minimization measures to
reduce impacts to migratory birds on your list, click'ont a PROBABILITY OF PRESENCE SUMMARY at
the top of your list to see when these birds ar . t\ke to be present and breeding in your
project area.
NAME 0 BREEDING SEASON (IFA
OC)N BREEDING SEASON IS INDICATED
FORA BIRD ON YOUR LIST,THE
BIRD MAY BREED IN YOUR
PROJECT AREA SOMETIME WITHIN
THE TIMEFRAME SPECIFIED,
\%\0
WHICH IS AVERY LIBERAL
ESTIMATE OF THE DATES INSIDE `
WHICH THE BIRD BREEDS
ACROSS ITS ENTIRE RANGE. I
"BREEDS ELSEWHERE" INDICATES '
THAT THE BIRD DOES NOT LIKELY
BREED IN YOUR PROJECT AREA.)
I
Bald Eagle Haliaeetus leucocephalus Breeds Sep 1 to Jul 31
This is not a Bird of Conservation Concern(BCC)in this area,but
warrants attention because of the Eagle Act or for potential I
susceptibilities in offshore areas from certain types of development I
or activities.
http://ecos.fws.gov/ecp/species/1626
1
I
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Kentucky Warbler Oporornis formosus Breeds Apr 20 to Aug 20
( This is a Bird of Conservation Concern(BCC)throughout its range in
( the continental USA and Alaska.
Red-headed Woodpecker Melanerpes erythrocephalus Breeds May 10 to Sep 10
This is a Bird of Conservation Concern(BCC)throughout its range in
the continental USA and Alaska.
Rusty Blackbird Euphagus carolinus Breeds elsewhere
This is a Bird of Conservation Concern(BCC)only in particular Bird
Conservation Regions(BCRs) in the continental USA
Wood Thrush Hylocichla mustelina Breeds May 10 to Aug 31
This is a Bird of Conservation Concern(BCC)throughout its range in
the continental USA and Alaska.
°41c\P
Probability of Presence Summary
The graphs below provide our best understanding of when birds f oncer a most likely to be
present in your project area. This information can be used to t ilo heidule your project
activities to avoid or minimize impacts to birds. Please m e su read and understand the FAQ
"Proper Interpretation and Use of Your Migratory port" efore using or attempting to
interpret this report.
Probability of Presence ( ) 0
Each green bar represents the -, rela probability of presence in the 10km grid cell(s)your
project overlaps during a , r ek of the year. (A year is represented as 12 4-week months.)
A taller bar indicate is I - ., o.ability of species presence.The survey effort (see below) can be
used to establ a le of confidence in the presence score. One can have higher confidence in the
presenc-, ore the c rresponding survey effort is also high.
How i e probability of presence score calculated?The calculation is done in three steps:
1. h robability of presence for each week is calculated as the number of survey events in the
week where the species was detected divided by the total number of survey events for that
week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was
found in 5 of them,the probability of presence of the Spotted Towhee in week 12 is 0.25.
2. To properly present the pattern of presence across the year, the relative probability of presence
is calculated.This is the probability of presence divided by the maximum probability of presence
across all weeks. For example, imagine the probability of presence in week 20 for the Spotted
Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any
week of the year.The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is
4 0.05/0.25 = 0.2.
3. The relative probability of presence calculated in the previous step undergoes a statistical
conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of
presence score.
To see a bar's probability of presence score, simply hover your mouse cursor over the bar.
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Breeding Season ( ) '
Yellow bars denote a very liberal estimate of the time-frame inside which the bird breeds across its '
entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. '
Survey Effort (I) '
Vertical black lines superimposed on probability of presence bars indicate the number of surveys
performed for that species in the 10km grid cell(s)your project area overlaps.The number of
surveys is expressed as a range, for example, 33 to 64 surveys.
To see a bar's survey effort range, simply hover your mouse cursor over the bar. '
No Data (—) '
A week is marked as having no data if there were no survey events for that week.
Survey Timeframe
Surveys from only the last 10 years are used in order to ensure delivery of currently relevant `
information. The exception to this is areas off the Atlantic coast, where bird returns are b
years of available data, since data in these areas is currently much more sparse. `
a probability of presence breeding seas„ .e ffo —no data
SPECIES JAN FEB MAR APR MAY JUN JUL AUG SE i OCT` NOV DEC 0
Bald Eagle _ _ _ _• _ • _• ._ � _• ++ ++ ._ -- — +— , _' __ E_ +___
Non-BCC
Vulnerable(This is \ 'S
not a Bird of
Conservation '
Concern(BCC)in
GO
this area,but
warrants attention
because of the
Eagle Act or for
potential &L
susceptibilities in
offshore areas
from certain •
of
activit ivit . r
'
K- �t '.n arbler
BC `c angewide
(CON)(This is a '
Bird of
Conservation
Concern(BCC)
throughout its (
range in the
continental USA I
and Alaska.)
I
http s://ecos.fws.govlpac/project/NXBF H N E6CZAYBOA777 UGG3 EFLY/resources 7/11

I
1 9/22/21,11:45 AM IPaC:Explore Location resources
' Red-headed... _ -_r-- +�-� -.-, . 4 F 77777 _ --7- +_
---+ --+- 4.....-�
Woodpecker
BCC Rangewide
(CON)(This is a
Bird of
Conservation
Concern(BCC)
throughout its
range in the
continental USA
and Alaska.)
Rusty Blackbird -.--� ..-_' —�.—+ —...-++ ++-.-- --+—
BCC-BCR(This is a
Bird of
Conservation
Concern(BCC)only
in particular Bird
Conservation
Regions(BCRs)in C) i
the continental
USA) c‘4tt
Wood Thrush +---
BCC Rangewide
(CON)(This is a
Bird of
\itrol
Conservation
Concern(BCC) lklb:)
throughout its
range in the
continental USA
and Alaska.)
1
0.1 CP
Tell me more about conserva0on 7ie,agt.trers I can implement to avoid or minimize impacts to migratory birds.
Nationwide Conservati Me ure d escribes measures that can help avoid and minimize impacts to all birds at
any location year un . plem ntation of these measures is particularly important when birds are most likely to
occur in the . j area.When birds may be breeding in the area,identifying the locations of any active nests and
avoiding ''ei est ction is a very helpful impact minimization measure.To see when birds are most likely to
occur n be • eeding in your project area,view the Probability of Presence Summary.Additional measures or
p + se advisable depending on the type of activity you are conducting and the type of infrastructure or
bird-species present on your project site.
What does IPaC use to generate the migratory birds potentially occurring in my specified location?
The Migratory Bird Resource List is comprised of USFWS Birds of Conservation Concern(BCC).and other species
that may warrant special attention in your project location.
The migratory bird list generated for your project is derived from data provided by the Avian Knowledge Network
(AKN).The AKN data is based on a growing collection of survey, banding,and citizen science datasets and is
queried and filtered to return a list of those birds reported as occurring in the 10km grid cell(s)which your project
intersects, and that have been identified as warranting special attention because they are a BCC species in that
area,an eagle(Eagle Act requirements may apply),or a species that has a particular vulnerability to offshore
activities or development.
Again,the Migratory Bird Resource list includes only a subset of birds that may occur in your project area. It is not
representative of all birds that may occur in your project area.To get a list of all birds potentially present in your
project area,please visit the AKN Phenology Tool.
https://ecos.fws.gov/ipac/project/NXBF H N E6CZAYBOA777 UGG3 EFLY/resources 8/11

•
9/22/21,11:45AM IPaC:Explore Location resources
What does IPaC use to generate the probability of presence graphs for the migratory birds potentially
occurring in my specified location?
The probability of presence graphs associated with your migratory bird list are based on data provided by the
Avian Knowledge Network(AKN).This data is derived from a growing collection of survey, banding,and citizen
science datasets .
Probability of presence data is continuously being updated as new and better information becomes available.To
learn more about how the probability of presence graphs are produced and how to interpret them,go the
Probability of Presence Summary and then click on the "Tell me about these graphs" link.
How do I know if a bird is breeding,wintering, migrating or present year-round in my project area?
To see what part of a particular bird's range your project area falls within(i.e. breeding,wintering, migrating or
year-round),you may refer to the following resources:The Cornell Lab of Ornithology All About Birds Bird Guide,or
(if you are unsuccessful in locating the bird of interest there),the Cornell Lab of Ornithology Neotropical Birds
guide. If a bird on your migratory bird species list has a breeding season associated with it, if that bird does ccu
in your project area,there may be nests present at some point within the timeframe specified. If"Bree
elsewhere" is indicated,then the bird likely does not breed in your project area.
What are the levels of concern for migratory birds? 'AS\
"44
Migratory birds delivered through IPaC fall into the following distinct categories of co er :
1. "BCC Rangewide" birds are Birds of Conservation Concern (BCC)that are of concern throughout their range
anywhere within the USA(including Hawaii,the Pacific Islands,Puerto,Rico,and the Virgin Islands);
2. "BCC- BCR" birds are BCCs that are of concern only in particular gird Conservation Regions(BCRs)in the
continental USA;and
3. "Non-BCC-Vulnerable" birds are not BCC species in your project area,but appear on your list either because of
the Eagle Act requirements(for eagles)or(for non-eagles)potential susceptibilities in offshore areas from
certain types of development or activities(e.g. offshore energy development or longline fishing).
Although it is important to try to,avold and minimize impacts to all birds, efforts should be made, in particular,to
avoid and minimize impacts to the birds on this list, especially eagles and BCC species of rangewide concern. For
more information on ctriservtion:measures you can implement to help avoid and minimize migratory bird
impacts and regyifiemeri145 for eagles,please see the FAQs for these topics.
Details about birds that are potentially affected by offshore projects
Forad'diilional details about the relative occurrence and abundance of both individual bird species and groups of
bird'species within your project area off the Atlantic Coast, please visit the Northeast Ocean Data Portal.The Portal
also offers data and information about other taxa besides birds that may be helpful to you in your project review.
Alternately,you may download the bird model results files underlying the portal maps through the NOAA NCCOS
Integrative Statistical Modeling and Predictive Mapping of Marine Bird Distributions and Abundance on the Atlantic
Outer Continental Shelf project webpage.
Bird tracking data can also provide additional details about occurrence and habitat use throughout the year,
including migration. Models relying on survey data may not include this information. For additional information on
marine bird tracking data,see the Diving Bird Study and the nanotag studies or contact Caleb Spjegel or Pam
Loring.
What if I have eagles on my list?
If your project has the potential to disturb or kill eagles,you may need to obtain a permit to avoid violating the
Eagle Act should such impacts occur.
https://ecos.fws.gov/pac/project/NXBF H N E6CZAYBOA777 UGG3 EFLY/resources 9/11

9/22/21,11:45AM IPaC: Explore Location resources
Proper Interpretation and Use of Your Migratory Bird Report
The migratory bird list generated is not a list of all birds in your project area, only a subset of birds of priority
concern.To learn more about how your list is generated, and see options for identifying what other birds may be
in your project area,please see the FAQ "What does IPaC use to generate the migratory birds potentially occurring
in my specified location". Please be aware this report provides the "probability of presence"of birds within the 10
km grid cell(s)that overlap your project; not your exact project footprint. On the graphs provided,please also look
carefully at the survey effort(indicated by the black vertical bar)and for the existence of the"no data" indicator(a
red horizontal bar).A high survey effort is the key component. If the survey effort is high,then the probability of
presence score can be viewed as more dependable. In contrast,a low survey effort bar or no data bar means a lack
of data and,therefore,a lack of certainty about presence of the species.This list is not perfect; it is simply a starting
point for identifying what birds of concern have the potential to be in your project area,when they might be there,
and if they might be breeding(which means nests might be present).The list helps you know what to look for to
confirm presence,and helps guide you in knowing when to implement conservation measures to avoid or
minimize potential impacts from your project activities,should presence be confirmed.To learn more about
conservation measures,visit the FAQ "Tell me about conservation measures I can implement to avoid or minimi
impacts to migratory birds" at the bottom of your migratory bird trust resources page.
Olc\O
Facilities
‘0„0*-cl>44.
National Wildlife Refuge lands
Any activity proposed on lands managed byth- .tional Wildlife Refuge system must undergo a
'Compatibility Determination' conducted t e Re ge. Please contact the individual Refuges to
discuss any questions or concerns.
THERE ARE NO REFUGE LANDS AT THIS LOCATION.
F. c eries
TH EARE NO FISH HATCHERIES AT THIS LOCATION.
Wetlands in the National Wetlands Inventory
Impacts to NWI wetlands and other aquatic habitats may be subject to regulation under Section 404
of the Clean Water Act, or other State/Federal statutes.
For more information please contact the Regulatory Program of the local U.S. Army Corps of
Engineers District.
THERE ARE NO KNOWN WETLANDS AT THIS LOCATION.
Data limitations
https://e cos.fw s.govllpac/project/NXBF H NE6CZAY BOA777 UGG3 EFLY/resources 10/11

1
9/22/21, 11:45 AM I PaC:Explore Location resources
The Service's objective of mapping wetlands and deepwater habitats is to produce reconnaissance level
information on the location,type and size of these resources.The maps are prepared from the analysis of high
altitude imagery.Wetlands are identified based on vegetation,visible hydrology and geography. A margin of error
is inherent in the use of imagery;thus, detailed on-the-ground inspection of any particular site may result in
revision of the wetland boundaries or classification established through image analysis.
The accuracy of image interpretation depends on the quality of the imagery,the experience of the image analysts,
the amount and quality of the collateral data and the amount of ground truth verification work conducted.
Metadata should be consulted to determine the date of the source imagery used and any mapping problems.
Wetlands or other mapped features may have changed since the date of the imagery or field work.There may be
occasional differences in polygon boundaries or classifications between the information depicted on the map and
the actual conditions on site.
Data exclusions
Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial
imagery as the primary data source used to detect wetlands.These habitats include seagrasses or submerge ` ¢`,,e
aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and nearshore coastal war
Some deepwater reef communities(coral or tuberficid worm reefs) have also been excluded r t j,ye► ory.
These habitats,because of their depth, go undetected by aerial imagery.
Data precautions 44.‘CS)***
Federal,state,and local regulatory agencies with jurisdiction over v te*arcps m y ine and describe wetlands in a
different manner than that used in this inventory.There is no atteitnpteip'&itht r the design or products of this
inventory,to define the limits of proprietary jurisdiction of any F deraJAtate, or local government or to establish
the geographical scope of the regulatory programs of"governrn'r1 agencies. Persons intending to engage in
activities involving modifications within or adj tk wetlancIareas should seek the advice of appropriate federal,
state, or local agencies concerning specified ency egul4tory programs and proprietary jurisdictions that may
affect such activities.
OCL
cf°1
1\1414
L
http s://ecos.fws.govlpac/project/NXBF H N E6CZAYBOA777 UGG3 E FLY/resources 11/11

Roy Cooper,Governor
■■■
■■ .4 NC DEPARTMENT OF D.Reid Wilson,Secretary
3 '.1
■■ .■■ NATURAL AND CULTURAL RESOURCES
■ •a• Walter Clark
Director,Division of Land and Water Stewardship
NCNHDE-15806
September 22, 2021
Jessica Tisdale
HDR
555 Fayetteville Street
Raleigh, NC 27601
RE: Cub Creek Wastewater Treatment Plant Expansion and Upgrade
Dear Jessica Tisdale:
The North Carolina Natural Heritage Program (NCNHP) appreciates the opportunity to provide
information about natural heritage resources for the project referenced above.
A query of the NCNHP database indicates that there are records for rare species, important natural
communities, natural areas, and/or conservation/managed areas within the proposed project
boundary. These results are presented in the attached 'Documented Occurrences' tables and map.
The attached 'Potential Occurrences' table summarizes rare species and natural communities that
have been documented within a one-mile radius of the property boundary. The proximity of these
records suggests that these natural heritage elements may potentially be present in the project area
if suitable habitat exists.Tables of natural areas and conservation/managed areas within a one-mile
radius of the project area, if any, are also included in this report.
If a Federally-listed species is documented within the project area or indicated within a one-mile
radius of the project area, the NCNHP recommends contacting the US Fish and Wildlife Service
(USFWS) for guidance. Contact information for USFWS offices in North Carolina is found here:
httos://www.fws.g ov/off i ces/Directory/L istOff ices.cfm?statecode=37.
Please note that natural heritage element data are maintained for the purposes of conservation
planning, project review,and scientific research, and are not intended for use as the primary criteria
for regulatory decisions. Information provided by the NCNHP database may not be published
without prior written notification to the NCNHP, and the NCNHP must be credited as an information
source in these publications. Maps of NCNHP data may not be redistributed without permission.
Also please note that the NC Natural Heritage Program may follow this letter with additional
correspondence if a Dedicated Nature Preserve, Registered Heritage Area, Land and Water Fund
easement, or an occurrence of a Federally-listed species is documented near the project area.
If you have questions regarding the information provided in this letter or need additional assistance,
please contact Rodney A. Butler at fodnev.butler( ncdcr.00v or 919-707-8603.
Sincerely,
NC Natural Heritage Program
DEPAR T MEN T OF NATURAL AND CULTURAL RESOURCES
< 121 W JONES STREET.RALEIGH.NC 27603 • 1651 MAIL SERVICE CENTER.RALLv:,ti.i Ft„
OFC 919.7079120 • FAX 919 707,9121

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Intersecting the Project Area
Cub Creek Wastewater Treatment Plant Expansion and Upgrade
September 22, 2021
NCNHDE-15806
Element Occurrences Documented Within Project Area
Taxonomic EO ID Scientific Name Common Name Last Element Accuracy Federal State Global State
Group Observation Occurrence Status Status Rank Rank
Date Rank
Crustacean 32642 Cambarus johni Carolina Foothills 2009-04-08 E 3-Medium --- Significantly G3 S3
Crayfish Rare
No Natural Areas are Documented within the Project Area
Managed Areas Documented Within Project Area
Managed Area Name Owner _ ,,, Owner Type
Town of Wilkesboro Open Space Town of Wilkesboro Local Government
NOTE: If the proposed project intersects with a conservation/managed area,please contact the landowner directly for additional information.If the project intersects with a Dedicated Nature Preserve
(DNP),Registered Natural Heritage Area(RHA),or Federally-listed species,NCNHP staff may provide additional correspondence regarding the project.
Definitions and an explanation of status designations and codes can be found at httos•//nrnhdP neturasPrvP nrg/help.Data query generated on September 22,2021;source:NCNHP,02 July 2021.Please
resubmit your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 2 of 4

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Within a One-mile Radius of the Project Area
Cub Creek Wastewater Treatment Plant Expansion and Upgrade
September 22, 2021
NCNHDE-15806
Element Occurrences Documented Within a One-mile Radius of the Project Area
Taxonomic EO ID Scientific Name Common Name Last Element Accuracy Federal State Global State
Group Observation Occurrence Status Status Rank Rank
Date Rank
Crustacean 32642 Cambarus johni Carolina Foothiils 2009-04-08 E 3-Medium --- Significantly G3 53
Crayfish Rare
Mayfly 4054 Macdunnoa brunnea a mayfly 1993-06-07 H? 3-Medium --- Significantly G3G4 S2
Rare
No Natural Areas are Documented Within a One-mile Radius of the Project Area
Managed Areas Documented Within a One-mile Radius of the Project Area
Managed Area Name Owner Owner Type
Town of North Wilkesboro Open Space Town of North Wilkesboro Local Government
Wilkes County Open Space Wilkes County Local Government
Town of North Wilkesboro Open Space Town of North Wilkesboro Local Government
Town of North Wilkesboro Open Space Town of North Wilkesboro Local Government
Town of North Wilkesboro Open Space - Highland Town of North Wilkesboro Local Government
Park
Town of North Wilkesboro Open Space Town of North Wilkesboro Local Government
Town of Wilkesboro Open Space Town of Wilkesboro Local Government
Town of Wilkesboro Open Space Town of Wilkesboro Local Government
Wilkes County Open Space Wilkes County Local Government
Wilkes County Open Space Wilkes County Local Government
Wilkes County Open Space Town of Wilkesboro Local Government
NC Land and Water Fund Conservation Agreement NC DNCR, NC Land and Water Fund State
Definitions and an explanation of status designations and codes can be found at httos://ncnhde.natureserve.ora/helo.Data query generated on September 22,2021;source:NCNHP,Q2 July 2021.Please
resubmit your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 3 of 4

NCNHDE-15806: Cub Creek Wastewater Treatment Plant Expansion and Upgrade
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Page 4 of 4

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FYZ FIGURE 1
CUB CREEK WASTEWATER TREATMENT EXPANSION—TOWN OF WILKESBORO I ENVIRONMENTAL REVIEW
PATH:E:'GIS,PROJE CTS'08T212 TOWROF WAKE S80 R010109212 WW1P PRE LIM_DE SIG11V.2_WO RR IR RROG RE SS MAR_DOCS FI%DWO RIM G OJICIKITY_LE TIER 20211012.MK0-USE R:RDUGGER-DATE:10,12,2021

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CUB CREEK WASTEWATER TREATMENT EXPANSION-TOWN OF WILKESBORO I ENVIRONMENTAL REVIEW
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Appendix E: Public Lands, Scenic, Recreational and State Natural Areas within 1 and 5 miles of the Study Area
Name Owner Address Buffer Area
Wilkes County Chamber of Commerce Private 717 Main St# 1, North Wilkesboro, NC 28659 1
Highland Park Disc Golf Course Town of North Wilkesboro 22 S Park Rd, North Wilkesboro, NC 28659 1
Rolling Pines Disc Golf Course Town of Wilkesboro 1011 Old US 421, Wilkesboro, NC 28697 1
Cub Creek Park Town of Wilkesboro 1
Memorial Park Town of North Wilkesboro 1
Highland Park Town of North Wilkesboro 1
Smoot Park Town of North Wilkesboro 1
Rolling Pines Disc Golf Course Town of Wilkesboro 1
Market Street Park Town of Wilkesboro 1
Reddies River Trailhead YRGC 1
Tyson Trailhead YRGC 1
Memorial Park Trailhead YRGC 1
Smoot Park Trailhead YRGC 1
Lowe's Trailhead YRGC 1
Wilkesboro Blvd YRGC 1
Main Street Park Town of North Wilkesboro 1
Smoot Park _ Town of North Wilkesboro 106 Chestnut Street, North Wilkesboro, NC 28659 1
Splash Pad-Wilkesboro Town of Wilkesboro 100 E Main Street,Wilkesboro, NC 28697 1
i Historic North Wilkesboro Speedway Private 381 Speedway LnNorth Wilkesboro, NC 28659 5+
Northwest NC Visitor Center State 2121 East Highway 421North Wilkesboro, NC 28659 5
Garden of the Senses- Wilkes Community College Private 328 S Collegiate Drive, Wilkesboro NC 28697 5
VFW Campground Private 802 Veteran's Dr., North Wilkesboro, NC 28659 5
Oakwoods Country Club Private 541 Clubhouse Rd,Wilkesboro, NC, 28697 5
Stardust Farm and Vineyards Private 966 Cherry Grove Rd, Moravian Falls, NC, 28654 5
Fish Dam Creek Overlook USA, USACE W. Kerr Scott Dam & Reservoir 5
Park at River's Edge Wilkes County 5
Westwood Park Town of Wilkesboro 5
School Street Park Town of Wilkesboro 5
Woodlawn Gym & Park Town of North Wilkesboro 5
Mast Street Park Town of North Wilkesboro 5
Moravian Creek Trailhead YRGC 5
N. Jefferson Turnpike Trailhead YRGC 5
S.Jefferson Turnpike Trailhead YRGC 5
WRMC Wellness Center Trailhead YRGC Si
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Environmental Information Document 1

Appendix E: Public Lands, Scenic, Recreational and State Natural Areas within 1 and 5 miles of the Study Area
W. Kerr Scott Trailhead USA, USACE W. Kerr Scott Dam& Reservoir 5
Wilkes CC Trailhead YRGC 5
Cub Creek Park MTB Town of Wilkesboro 5
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Environmental Information Document 2

NC Office of State Archaeology References Cited
Ayers, Harvard G. 1983.An Archeological Survey and Evaluation of the Wilkes County, NC
Municipal Project. Prepared for CBSA Architects. Prepared by Appalachian Archeological
Services. Tracking#ER 93-8999. Survey identified Site 31WK186.
Garrow, Patrick H. and Daniel L. Marcel. 2008a.Phase I Archaeological Survey, Proposed
NCDOT Division 11, Division Office, North Wilkesboro, North Carolina. Tracking#ER 08-
0952.
Gibson, B. 1940.North Carolina Archaeological Survey Form For Site WK14.
Padgett, Thomas J. 1986.Archaeological Survey,Bridge No. 53 over Yadkin River,NC 18-268,
Wilkes County, TIP No. B-1432. Review# 86-E-4220-0272.
Reid, Dawn. 1999. Intensive Archaeological Survey of a Proposed Frontier Energy Gasline
Corridor, Wilkes County, North Carolina.Prepared by Brockington and Associates, Inc.
Tracking#ER 98-8509. Survey identified Sites 31WK197 and 31WK198.
Right, Douglas L.n.d.North Carolina Archaeological Survey Form For Site 31 WK71.
Robinson,Kenneth W. 2011.Archaeological Inspection and Preliminary Assessment,Proposed
1.2-mile Segment of Yadkin River Greenway,North Wilkesboro, Wilkes County, North Carolina.
Prepared by Archaeological & Historical Services. Tracking#ER 11-1250.
Wilkerson, Matt T., Gerold L. Glover, Scott E. Halvorsen, Paul J. Mohler, Brian P. Overton,
Shane C. Petersen, Caleb H.G. Smith, and C. Damon Jones. 2012.Archaeological Investigations
Included in the Annual Report On Programmatic Agreement for Minor Transportation Projects,
July 1, 2010-June 30, 2011. Tracking#ER 11-1751.

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
Site ID Status Site Name Location BufferArea
WK0184 NR St. Pauls Episcopal Church and Cemetery N side Cowles St. between Woodland Blvd.and 1
WK0214 NR Wilkes Hosiery Mills 400 blk F Street 407 F Street North Wilkesboro 1
WK0172 SL (former) United States Post Office S side of C Street North Wilkesboro 1
WK0078 SL Wilkes Hardware Block 314-324 10th Street North Wilkesboro 1
Lincoln Heights School (Wilkes County Training School) End of SR 2453, 0.33 mi. S of jct. with SR 2510 (Old
[WK0314 NR (Lincoln Heights Hig US 421* 11
WK0093 SLDOE Fairmount House 707 Kensington Avenue North Wilkesboro 1
WK0143 SL North Wilkesboro Graded School NW corner of D and 3rd Streets 300 D Street North— 1
iWK0322 SO Robert Cleveland House (Current site) 202 N. Bridge St. Wilkesboro 1
[WK0144 SD North Wilkesboro High School (Gone) E. &Third Sts. North Wilkesboro 1
[WK0202 NRHD DOWNTOWN MAIN STREET HISTORIC DISTRICT 800-900 Blocks of Main Street North Wilkesboro 1
WK0163 NR Southern Railway Depot Corner 9th and Cherry streets North Wilkesboro 1
WK0065 SO Barber House &School (Approximate site) Cedar Lane North Wilkesboro 1`
WK0271 NRHD DOWNTOWN WILKESBORO HISTORIC DISTRICT Cowles, Corporation, Henderson, Woodland 1
WK0276 LHD Downtown Wilkesboro Local Historic District Main & Bridge Sts. Wilkesboro 1
WK0100 NR Thomas B. Finley House 1014 E Street N.Wilkesboro 1
'WK0130 SO House SW corner D. &Third Sts. 1
WK0081 SO Crews House 210 Sixth St. 1
WK0108 SO Gentry House 311 Sixth St. 1
[WK0110 SO Goforth House 307 Sixth St. 1
WK0180 SO Bid Williams House 512 C. Street 1
WK0075 SO Chero Cola Bottling Co. 719 B. Street 1
WK0131 SO House 708 D.Street 1
[WK0077 SO J. R. Combs House 704 D.Street 1
rWK0169 SO W. F.Trogden House NW corner D. & Eighth Sts. 1
[WK0132 SO House 705 D.Street 1
1WK0076 SO Carl Coffey House 710 D.Street 1
WK0084 SO Dry Goods Store 315 Tenth St. 1
WK0150 SO A. F. Phillips Co. Roots & Herbs Warehouse 301-307 Tenth St. 1
WK0091 SO E. E. Eller Wholesale Produce Co. 324 Tenth St. 1
1.
WK0149 SO Pepsi Cola Bottling Co. Building 310 Tenth St. 1
WK0141 SO North Wilkesboro Candy Co. 308 Tenth St. 1
1
WK0155 SO Red Top Bottling Co. 302-306 Tenth St.
WK0171 SO Trogdon-McGee Block 928 Main Street 1
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Enivronmental Information Document 1

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
WK0208 BF Commercial Buildings 900 blk Main Street, N sd 1
WK0207 BF Commercial Buildings 900 blk Main Street, S sd 1
WK0181 SO New Williams Mill Co. 108 Fifth St. 1
WK0126 SO House 305 Second St. 1
WK0042 SO J. F.Jordan House 601 E Main St,Wilkesboro 1
WK0030 SO House 603 E Main St,Wilkesboro 1
WK0034 SD House (Gone) 501 E Main St,Wilkesboro 1
WK0035 SO Pharr House 502 E Main St,Wilkesboro 1
WK0019 SO Dr. Erwin House 500 E Main St, Wilkesboro 1
WK0007 SO Barber House 406 E Main St,Wilkesboro 1
,WK0044 SO McNeil-Hayes House 402 E Main St,Wilkesboro 1
LWK0025 SO Greenwood-Hayes House 409 E Main St,Wilkesboro 1
WK0045 SO C. Y. Miller House 407 E Main St, Wilkesboro 1
WK0012 SD Carrigan House (Gone) 405 E Main St,Wilkesboro 1
WK0041 SD Joines House (Gone) 107 S. Bridge St. 1
WK0036 SD House (Gone) 109 S. Bridge St. 1
WK0018 SO Episcopal Rectory 204 W. Main St. 1
WK0038 SO House 203 Henderson Dr. 1
WK0052 SO Tory Oak Broad & North Sts. 1
:WK0167 SO (former)Town Hall 801 Main Street 1
WK0059 SO Tomlinson Department Store 809 Main Street 1
WK0079 SO City Café 807 Main Street 1
'WK0176 SO Commercial Building 813-817 Main Street 1
WK0152 SO Horton Drug Store# 2 819 Main Street 1
WK0120 SO Horton Drug Store# 1 821 Main Street 1
WK0114 SO Commercial Building 823 Main Street 1
WK0085 SO Commercial Building 825-827 Main Street 1
WK0060 SO Amuzu Theatre 829 Main Street 1
°WK0113 SO Grocery 831 Main Street 1
WK0068 SO Brame Drug Store 833 Main Street 1
WK0210 SO Jail &Auto Repair Shop 210 Gordon Avenue 1
WK0137 SO Liberty Theatre 816 Main Street 1'
WK0142 SO North Wilkesboro Drug Company 818-820 Main Street 1'
WK0063 SO (former) Bank of North Wilkesboro 832 Main Street 1
WK0121 SO Hotel Wilkes 830 Main Street 1
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Enivronmental Information Document 2

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
WK0082 SO Commercial Building 214 Ninth Street 1`
IWK0087 SO Commercial Building 216 Ninth Street 1
WK0088 SO Ralph Duncan House 817 C. Street 1
'WK0064 SO (former) Bank of North Wilkesboro 901 Main Street 1
WK0135 SO Jenkins Hardware Company 903 Main Street 1
WK0080 SO Commercial Building 913 Main Street 1
WK0066 SO Belk Department Store 915-917 Main Street 1
WK0086 SO Commercial Building 919 Main Street 1
WK0115 SO Vaughn-Hemphill-Harris Building 921 Main Street 1
.WK0058 SO Absher-Hayes-Blackburn Store 910 Main Street 1
'WK0159 SO Shoe Store 912 Main Street 1
WK0209 BF Commercial Buildings 200 blk Ninth Street 1
WK0074 SO Caudill house 710 Ninth St. 1
WK0101 SO Carrie W. Foote House 703 Ninth St. 1
'WK0094 SO Allen Gordon Finley House 1116 E. Street 1
WK0096 SO Edward Gwyn Finley House 1112 E. Street 1
WK0151 SO Carrie Pilson House 1204 E. Street 1
WK0095 SO Arthur A. Finley House 1208 E. Street 1
WK0099 SO John Tom Finley House 1201 E. Street 1
WK0118 SO J. Gordon Hackett House 1102 E. Street 1I
WK0148 SO Alec J. Pendley House 1101 E. Street 1
WK0174 SO S. M. D. Ward House 1113 E. Street 1
WK0097 SD J. Robert Finley House(Gone) 1107 E. Street 1
WK0154 SO Rector House 904 E. Street 1
WK0098 SO John George Finley House 911 E. Street 1
WK0134 SO Jarvis-Jenkins House 412 Ninth St. 1
s WK0133 SO House 411 Eighth St. 1
'WK0173 SO M. A.Vickery House 916 F. Street 1
WK0129 SO House 906 F. Street 1
WK0122 BF Houses 606-704 Ninth St. 1
WK0127 SO Houase 702 F.Street 1.
WK0166 SO Terry House 611 F. Street 1
`WK0111 SO Grier House 601 F.Street 1
WK0071 SO W.A. Bullis House 408 E. Street 1'
'WK0164 SO E. F.Stafford House 402 E. Street 1
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Enivronmental Information Document 3

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
WK0092 SO Estes House 411 E. Street 1
WK0083 SO Dimette House 407 E. Street 1
WK0124 SO House 503 Sixth St. 1
WK0117 SO Gwyn House 410 Sixth St. 1
,WK0067 SO E. M. Blackburn house 1015 E. Street 1!
WK0455 DOE James Calloway Harris House 616 5 Bridge St, Wilkesboro 1
WK0454 DOE Julius A. Rousseau House 250 Oakwoods Rd , Wilkesboro 1
WK0451 SO Barber-Somers Motor Company 309 E Main St,Wilkesboro 1
WK0452 SO Kyle Hayes Building y 327 E Main St,Wilkesboro a _ v 11
WK0453 SO Midway Pontiac Building 331 E Main St,Wilkesboro 1'
WK0450 SA East Wilkesboro Historic District E Main St, Wilkesboro 1
WK0004 NR Old Wilkes County Jail 202 N. Bridge Street Wilkesboro 1
WK0005 NR Wilkes County Courthouse 100 E. Main Street Wilkesboro 1
WK0020 NR Federal Building 201 W Main St, Wilkesboro 1
WK0040 NR Johnson-Hubbard House 113 E. Main Street Wilkesboro 1
WK0054 NR Wilkesboro Presbyterian Church 205 E. Main Street Wilkesboro 1
WK0008 NR Brown-Cowles House and Cowles Law Office 200 E. Main Street_Wilkesboro 1
SE corner Broad and North Sts. 104 Broad Street
WK0023 NR Thomas B. Finley Law Office Wilkesboro 1
NE corner Broad and E. Main St. 102 E. Main Street
WK0051 NR Wilkesboro-Smithey Hotel Wilkesbo* 1
WK0024 SL Lassiter-Greene House 101 S West St,Wilkesboro 1
WK0022 NR J.T. Ferguson Store 111 E. Main Street Wilkesboro 1
WK0236 SO Mac and Edith Foster Brown House 304 E. Main Street 1
WK0235 SO Joe & Laura Pearson House II 302 E. Main Street 1
WK0234 SO Ruby Pearson House 300 E. Main Street 11
WK0029 SO Pharr House 303 E. Main Street 1!
,WK0031 SO Starr House 305 E. Main Street 1
WK0016 SO Davis-Crysel House 301 E. Main Street 1
WK0233 SO Somers-Foster House 210 E. Main Street 1
WK0048 SO Presbyterian Cemetery SW corner South &Corporation Sts. 1
'WK0237 SD Joe & Laura Pearson House I (Gone) 306 E. Main Street 1
WK0011 SO Calloway-Hubbard House 211 E. Main Street 1'
WK0244 SO Store Building 209 E. Main Street 1
I WK0270 SO Dr.Ware's Dentist Office 207 E. Main Street 1
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Enivronmental Information Document 4

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
WK0243 SO Bumgarner Bullis House 203 E. Main Street 11
WK0242 SO George &Cordie Hayes Johnston House 201 E. Main Street 1
'WK0232 SO Somers-Bumgarner House 206 E. Main Road 1
WK0227 SO Reins House 103 East Street 1'
WK0226 SO Dr.William C. Hayes House 101 East Street 1,
WK0241 SO Julius Cicero Jr& Nellie White Hubbard House 115 E. Main Street 1
WK0238 SO Commercial Building 103 E. Main Street 11
WK0239 SO Northwestern Bank Building 105 E. Main Street 1'
WK0240 SO Commercial Building 107 E. Main Street 1,
WK0013 SO Commercial Building 109 E. Main Street 1
WK0219 SO Wilkesboro Building and Loan Association Building 103 S. Bridge Street 1
WK0257 SO House 108 W. South Street 1
WK0057 SO W. Carter Winkler House 100 S. Bridge Street 1',
WK0259 SO Fidel! and Sally Frazier House 101 W. South Street 1
WK0261 SO House 107 W. South Street 1
WK0260 SO House 105 W. South Street 1
WK0228 SO House 104 W. Henderson Drive 1 _
WK0218 SO Henry & Edith Smithey House 200 S. Bridge Street 1
WK0053 SO Wallace House_ 101 E. South Street 1
WK0256 SO George & Mildred Childress House 103 E. South Street 1
WK0253 SO Gas Station 127 W. Main Street 1
WK0252 SO Gray Brothers Furniture Company Building 125 W. Main Street 1
WK0251 SO Warner Miller's Grocery Store 117 W. Main Street 1
WK0250 SO Commercial Building 113 W. Main Street 1
WK0046 SO Morrison Hardware Store 111 W. Main Street 1
WK0249 SO People's Drug Store 109 W. Main Street 1
WK0248 SO Bank of Wilkes 107 W. Main Street 1
WK0247 SO Commercial Building 105 W. Main Street 1
WK0246 SO Commercial Building 101 W. Main Street 1
WK0216 SO Lowe Building 101 N. Bridge Street 1
WK0021 SO Jesse T. Ferguson House 108 W. Main Street 1
WK0050 SO Prevette-Lenderman House 106 W. Main Street 1
'WK0049 SO Prevette-Lenderman Building 104 W. Main Street 1
WK0265 SO Worth Morrison House 104 S. West Street 1
WK0245 SO Texaco Station 100 W. Main Street 1
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Enivronmental Information Document 5

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
WK0217 SO Colonel Ben Cleveland Statue Between W. Main and W. North streets i
WK0056 SO (former)Wilkesboro Municipal Building 100 N. Bridge Street 1
.WK0231 SO Dr. Gurney Talmadge Mitchell House 204 E. Main Street 1
WK0258_ SO House 110 W.South Street 1`
WK0263 SO House 113 W. South Street 1
WK0262 SO Zachary& Nora Belle Yates Ferguson House 111 W. South Street 1
WK0269 SO Edsel & Mary Dula Whittington House 203 S. West Street 1
WK0268 SO Roby R. Church House 204 S. West Street 1
WK0267 SO House 202 S. West Street 1
=WK0266 SO DeBerry House 200 S. West Street 1
WK0229 SO Paul Lenderman House 201 W. Henderson Drive 1
1WK0255 SO House 107 E. North Street 1
WK0254 SO House _ 105 E. North Street 1
WK0230 SO Smithey's Discount Grocery 104 E. Main Street 1
WK0014 SO W. H. H.Cowles Law Office 106 E. Main Street 1
WK0222 SO Roy &Virginia Foster House 204 E. Cowles Street 1
WK0221 SO Saylor-Dancy House 202 E. Cowles Street 1
;WK0220 SO House 200 E. Cowles Street 1
WK0224 SO Gillis& Mildred Yates House 203 E. Cowles Street 1
WK0223 SO Charlie Foster House 201 E. Cowles Street 1
WK0215 SO Cundiff House 300 S. West Street 1
SR 1144, 0.7 mi from jct w/SR 1143 Wilkesboro
WK0003 NRD Montford Stokes House(Gone) vicinity 5
N side of SR 1144, 0, 0.5 mi E of SR 1143
WK0191 DOE Johnson Farm Complex Wilkesboro vi* 5'
_
WK0070 SL Dan Brookshire House 1001 Trogdon Street North Wilkesboro 5
i WK0330 SO Bridge#124 SR 1517 over Reddies River 5
WK0397 SO _ House 5847 Statesville Road Wilkesboro vicinity 5
i WK0337 SO Bridge#300 SR 2333 over Mulberry Creek 5
WK0421 SO Johnson J. Hayes Federal Building 207 W Main St,Wilkesboro 5
WK0026 NR J. L. Hemphill House (Lowe-Hemphill House) 203 N. Brook St. Wilkesboro 5
WK0313 SO Liberty Grove Baptist Church 5899 Liberty Grove Church Rd. 5
WK0311 SO House 1515 Elkin Hwy. 5
WK0306 SO House 824 Elkin Hwy. 5
WK0305 SO House 805 Elkin Hwy. 5
Town of Wilkesboro 1 Cub Creek WWTP Upgrades and Expansion 1 Enivronmental Information Document 6

Appendix E: N.C. SHPO Sites within 1 and 5 miles of Study Area
WK0303 SO House 149 Pebble St. 5'
WK0294 SO House 215 Legin Dr. 5
WK0292 SD Wilkes Lanes (Gone) 324 Elkin Hwy. 51
WK0289 SO Johnson Oil Co. 214 Elkin Hwy. 5
WK0281 SO House 14 Sparta Rd. 5
WK0284 SO House 18 Sparta Rd. 5
WK0285 SO House 20 Sparta Rd. 5
WK0390 SO Dam &Substation SR 1502, 0.3 mi from US 421 5
WK0043 SO Curtis-Linney House 905 Woodland Blvd. 5
WK0009 SO Bumgarner House 109 N. Cherry St. 5'
WK0039 SO House 605 Church St. 5
WK0032 SO House 300 S. Cherry St. 5'
WK0033 SO House 404 S. Cherry St. 5
WK0089 BF Houses 802-806 Elizabeth St. 5
_
WK0175 SO Harris Waugh House 1214 Trogdon St. 5
WK0106 SO J.Wiley Forrester House 1213 Trogdon St. 5
WK0136 SO Mont Jones House 1201 Trogdon St. 5
WK0027 SO Hemphill-Lowe House 406 Highland St. 5
WK0055 SO Wilkesboro Methodist Church W. Main St. 5
WK0047 SD Parlier-Edwards House(Gone) 206 W. Main St. 5
WK0448 SL North Wilkesboro Water Treatment Plant 1360 W D St, North Wilkesboro 5
WK0394 SO House Fishing Arbor Creek Road Wilkesboro vicinity 5
WK0264 SO Wilkesboro Elementary School 215 W South St,Wilkesboro 5
I WK0556 SO North Wilkesboro Speedway Speedway Rd, North Wilkesboro vicinity 5
Town of Wilkesboro I Cub Creek WWTP Upgrades and Expansion I Enivronmental Information Document 7

I.ui) October 13, 2021
Ms. Renee Gledhill-Earley
N.C. Historic Preservation Office
4617 Mail Service Center
Raleigh, NC 27699-4617
RE: Environmental Review
Proposed Cub Creek Wastewater Treatment Plant Expansion
Wilkesboro, NC
Dear Mrs. Gledhill-Earley,
HDR Engineering, Inc. of the Carolinas (HDR), on behalf of the Town of Wilkesboro, requests review and
comment on any potential issues with respect to archaeological or historical resources associated with the
proposed activities associated with the proposed Cub Creek Wastewater Treatment Plant (WVVrP) Expansion
Project(study area) in Wilkesboro, NC.
The Cub Creek WVVTP is an existing, aging wastewater treatment facility that currently has a permitting capacity
of 4.9 mgd that will be replaced with an expanded 9 mgd WWTP utilizing a different treatment regime. Most of
the new facilities will be located out of the 500-year floodplain (existing system is mostly within the 100-year
floodplain). There is also an associated stream restoration project along Cub Creek that will take place in
conjunction with the construction of the new WWTP. The aging Cub Creek WWTP presents significant
challenges in preventing bypasses and violations. In addition, the increase in rainfall that occurred in 2020
exacerbated this situation. This project will provide an environmental benefit through the replacement and
upgrade of treatment works where a bypass has occurred that reached surface waters. This project will provide
additional capacity and a more reliable treatment regime with a more rigorous treatment facility with better
controls, redundancy, and better flow equalization. It will also move a significant portion of facilities out of the
floodplain which will provide greater reliability. Figure 1 illustrates the service area of the Cub Creek WWTP.
The N.C. Office of State Archaeology provided reports and surveys within 1 mile of the site and emailed these
on September 30, 2021 (see attached).
We ask that you review this site based on the attached information to determine the presence of any cultural
•
• resources within or near to the project area. If you have any questions or concerns, please call me at your
earliest convenience at(919) 232-6654, jessica.tisdale(c(7hdrinc.com.
Sincerely,
HDR Engineering, Inc. of the Carolinas
Jessica L. Tisdale, CE
Senior Environmental Scientist
555 Fayetteville Street, Suite 900
Raleigh, NC 27601
Attachment: Figure 1 —Project Vicinity Map
Figure 2—USGS 24K Wilkesboro Quadrangle Map
OSA email capture
Cc: Ken Noland—Wilkesboro Town Manager
Wes Bramlett, HDR
Lara Grotz, HDR
hdrinc.com
555 Fayetteville Street,Suite 900
Raleigh,NC 27601

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1.01 FIGURE 1
CUB CREEK WASTEWATER TREATMENT EXPANSION—TOWN OF WILKESBORO I ENVIRONMENTAL REVIEW
PATH:2:IGI WHOA Cis 262212 TOWN OF WILKESOOR010309212 WWTP P RE LIM_OE SIGN4.2_WORK IH RROG RESS MAP_D OCS AVO WO RA INGWICINITY If TIER 16211612.MXD USER:RUHGGER-DATE:1OM2,262t

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FIGURE 2
CUB CREEK WASTEWATER TREATMENT EXPANSION-TOWN OF WILKESBORO I ENVIRONMENTAL REVIEW
PATH::CLTSMAOPGIS DATA:GISPROJE CIS Q61112 TO MIOFVALNESBOROM0JO9272_WWTP PRELIM DESIGN'7.1 WORN IN PROGRESSAIAP DOGS MDWORNINGPIGURE2 QUAD 20210123.MXD-USER:RDUGGER-DATE:10:122021

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North Carolina Department of Natural and Cultural Resources
State Historic Preservation Office
Ramona M.Barton,Administrator
Governor Roy Cooper Office of Archives and History
Secretary D.Reid Wilson Deputy Secretary,Darin J.Waters,Ph.D.
November 18, 2021
Jessica Tisdale [e-mail]
HDR
555 Fayetteville Street, Suite 900
Raleigh,NC 27601
Re: Cub Creek Wastewater Treatment Plant expansion, Snyder Street, Wilkesboro, Wilkes County,
ER 21-2531
Dear Ms. Tisdale:
Thank you for your letter of October 13, 2021,regarding the above-referenced undertaking. We have
reviewed the submission and offer the following comments.
We have conducted a review of the project and are aware of no historic resources which would be affected
by the project. Therefore, we have no comment on the project as proposed.
The above comments are made pursuant to Section 106 of the National Historic Preservation Act and the
Advisory Council on Historic Preservation's Regulations for Compliance with Section 106 codified at 36
CFR Part 800.
Thank you for your cooperation and consideration. If you have questions concerning the above comment,
contact Renee Gledhill-Earley, environmental review coordinator, at 919-814-6579
or environmental.reviewc ncdcr.gov. In all future communication concerning this project, please cite the
above referenced tracking number.
Sincerely,(2,, ,k���C f'
"
ko,r Ramona Bartos, Deputy
(p} State Historic Preservation Officer
Locaeoa:109 East Jones Street,Raleigh NC 27601 Mailing Address:4617 Mail Service Center,Raleigh NC 27699-4617 Telephone/Fax:[phone]-6898

RE: [External] OSA Review - Cub Creek Wastewater Treatment Expansion Preliminary Design Project - Wilkes Cou...
osafilesearch <[e-mail]> (--) Reply «j Reply All Forward •••
To O Tisdale;Jessica Thu 9/30/2021 10:30 AM
Cc 0 RichardsonSeacat, Harriet
Retention Policy 2019 0365- Delete All 6 Months (6 months) Expires 3/29/2022
O You forwarded this message on 10/12./2021 5:08 PM.
A
CAUTION: [EXTERNAL] This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know
the content is safe.
Hi Jessica.
We have gathered all the information for your request and it can be found in this ShareFile folder: https://ncdncrl.sharefile.corn/f/foe6e8e7-9d8f-
40d9-9eea-7af44001c8a8. You will be receiving an invite to the folder from maik sf-notifications.com. Please let me know if you do not receive it (I
recommend checking your spam folder) or have trouble accessing the folder! It will remain active for one month from today.
One of the reports is not currently scanned, but we've included the cover sheet. Let us know if you would like us to request a scanned copy!
Thanks,
Courtney
Courtney Page, MA
Collections IvlanageriStaff Archaeologist
Office of State Archaeology Research Center
NC Department of Natural and Cultural Resources
4 ass
u ■ NC DEPARTMENT OF
Ems NATURAL AND CULTURAL RESOURCES
Office: 919-715-5599
courtney.page(c�ncdcr.qov
215 West Lane Street
4619 fvlail Service Center
Raleigh, NC 27699-4619
Twitter I Facebook l Instagram l YouTube l Linkedln
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties.

Stat
EPA Vir AcymenetalProtection EJSCREEN Report (Version 2020) gat
gen
1 mile Ring around the Area, NORTH CAROLINA, EPA Region 4
Approximate Population: 2,522
Input Area (sq. miles): 4.23
Cub Creek WWTP
Selected Variables State EPA Region USA
Percentile Percentile Percentile
EJ Indexes
EJ Index for PM2.5 56 54 58
EJ Index for Ozone 56 54 58
EJ Index for NATA' Diesel PM 56 54 58
EJ Index for NATA'Air Toxics Cancer Risk 56 54 58
EJ Index for NATA` Respiratory Hazard Index 56 54 58
EJ Index for Traffic Proximity and Volume 29 31 39
El Index for Lead Paint Indicator 46 42 49
El Index for Superfund Proximity 56 54 58
EJ Index for RMP Proximity 5 9 11
EJ Index for Hazardous Waste Proximity 60 58 60
El Index for Wastewater Discharge Indicator 76 76 74
EJ Index for the Selected Area Compared to All People's Blockgroups in the State/Region/US
100
75
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"State Percentile Ai Regional Percentile al USA Percentile
This report shows the values for environmental and demographic indicators and EJSCREEN indexes.It shows environmental and demographic raw data(e.g.,the
estimated concentration of ozone in the air),and also shows what percentile each raw data value represents.These percentiles provide perspective on how the
selected block group or buffer area compares to the entire state,EPA region,or nation.For example,if a given location is at the 95th percentile nationwide,this
means that only 5 percent of the US population has a higher block group value than the average person in the location being analyzed.The years for which the
data are available,and the methods used,vary across these indicators.Important caveats and uncertainties apply to this screening-level information,so it is
essential to understand the limitations on appropriate interpretations and applications of these indicators.Please see EJSCREEN documentation for discussion of
these issues before using reports.
October 15,2021 1/3

eh��EP/4 United States EJSCREEN Report (Version 2020)
Environmental Protection
Agency
1 mile Ring around the Area, NORTH CAROLINA, EPA Region 4
Approximate Population: 2,522
Input Area(sq. miles): 4.23
Cub Creek WWTP
Wilt ,
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October 16,2021 1 36.112
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Sites reporting to EPA
Superfund NPL 0
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October 15,2021 2/3

UmteAstatea EJSCREEN Report (Version 2020)r► Environmental Protecvo��
��ae% ���Agency p
1 mile Ring around the Area, NORTH CAROLINA, EPA Region 4
Approximate Population: 2,522
Input Area (sq. miles): 4.23
Cub Creek VVWTP
Value State `voile in EPA %ile in USA %ile in
Selected Variables Region EPA
Avg. State Avg. USA
Avg. Region
Environmental Indicators
Particulate Matter(PM 2.s in µg/m3) 7.86 8.25 26 8.57 16 8.55 28
Ozone(ppb) 42.4 42.9 31 38 70 42.9 46
NATA'Diesel PM(µg/m3) 0.237 0.309 39 0.417 <50th 0.478 <50th
NATA'Cancer Risk(lifetime risk per million) 31 34 27 36 <50th 32 <50th
NATA'Respiratory Hazard Index 0.41 0.46 23 0.52 <50th 0.44 <50th
Traffic Proximity and Volume(daiiy traffic count/distance to road) 240 230 73 350 66 750 52
Lead Paint Indicator(%Pre-196o Housing) 0.45 0.16 92 0.15 91 0.28 73
Superfund Proximity(site count/km distance) 0.031 0.082 35 0.083 44 0.13 27
RMP Proximity(facility count/km distance) 3.7 0.39 99 0.6 98 0.74 97
Hazardous Waste Proximity(facilitycount/km distance) 0.52 1.3 47 0.91 57 5 38
Wastewater Discharge Indicator I11.9E-06 0.16 52 0.65 I
48 9.4 40
(toxicity-weighted concentration/m distance)
Demographic Indicators
Demographic Index 36% 36% 57 37% 56 36% 59
People of Color Population 29% 37% 47 39% 47 39% 48
Low Income Population 44% 36% 67 36% 66 33% 73
Linguistically Isolated Population 7% 2% 90 3%, 85 4% 78
Population With Less Than High School Education 27% 13% 91 13% 90 13% 88
Population Under 5 years of age 3% 6% 23 6% 24 6% 22
Population over 64 years of age 29% 15% 92 17% 90 15% 92
*The National-Scale AirToxics Assessment(NATA)is EPA's ongoing,comprehensive evaluation of air toxics in the United States.EPA developed the NATA to
prioritize air toxics,emission sources,and locations of interest for further study.It is important to remember that NATA provides broad estimates of health risks
over geographic areas of the country,not definitive risks to specific individuals or locations.More information on the NATA analysis can be found
at:https://www.epa.gov/national-air-toxics-assessment.
For additional information, see: www.epa.gov/environmentaljustice
EJSCREEN is a screening tool for pre-decisional use only. It can help identify areas that may warrant additional consideration,analysis,or outreach. It does not
provide a basis for decision-making,but it may help identify potential areas of EJ concern.Users should keep in mind that screening tools are subject to substantial
uncertainty in their demographic and environmental data,particularly when looking at small geographic areas.Important caveats and uncertainties apply to this
screening-level information, so it is essential to understand the limitations on appropriate interpretations and applications of these indicators. Please see
EJSCREEN documentation for discussion of these issues before using reports. This screening tool does not provide data on every environmental impact and
demographic factor that may be relevant to a particular location. EJSCREEN outputs should be supplemented with additional information and local knowledge
before taking any action to address potential EJ concerns.
October 15,2021 3/3

1
C
Attachment C — Wilkesboro
Sampling Results for PFAS
and 1 ,4-Dioxane

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