SW4191001_5090_Winding Creek Subdivision_Stream Determination_8.26.19_2/6/2020

PILFU
P I L O T E N V I R 0 N M E N T A L I N C
August 26, 2019
Mr. Shawn Sidener
EarthCentric Engineering, Inc.
204 West Clay Street
Mebane, North Carolina 27302
Reference: Stream/Wetland Determination
Winding Creek Subdivision
South Jim Minor Road
Mebane, Alamance County, North Carolina
Pilot Project 5090
Dear Mr. Sidener:
Pilot Environmental, Inc. (Pilot) is pleased to submit this report of the stream/wetland
determination for two drainage swales located on a property southwest of South Jim Minor Road
in Mebane, Alamance County, North Carolina.
Background
Wetlands are defined by the United States Army Corps of Engineers (USACE) and the United
States Environmental Protection Agency (EPA) as "those areas that are inundated or saturated
by surface or groundwater at a frequency and duration sufficient to support, and under normal
circumstances, do support a prevalence of vegetation typically adapted for life in saturated soil
conditions." In order for an area to be classified as wetland, hydrophytic vegetation, hydric soils,
and wetland hydrology indicators must be present.
Section 404 of the Clean Water Act (CWA) regulates the discharge of dredge and fill materials
into waters of the United States (lakes, rivers, ponds, streams, etc.), including wetlands. Waters
of the United States include the territorial seas, navigable coastal and inland lakes, rivers and
streams, intermittent streams, and wetlands. The EPA and the USACE jointly administer the
Section 404 program. Section 401 of the Clean Water Act grants each state the authority to
approve, condition, or deny any Federal permits that could result in a discharge to State waters.
Jurisdictional features include wetlands, open waters, ponds, lakes and perennial/intermittent
streams. Jurisdictional features are regulated by the USACE and North Carolina Department of
Environmental Quality -Division of Water Resources (NCDEQ-DWR). Permits are required priorto
impacting any jurisdictional feature. The type of permit required is specific to the type, location
and amount of impacts. Stormwater management plans and/or mitigation for proposed impacts
could be a requirement of the permit approval process.
PO Box 128, Kernersville, NC 27285
www.pilotenviro.com

Wetland Determination
Pilot Project 5090
August 26, 2019
The findings and conclusions in this report are our opinions based on field conditions
encountered at the time of the site visit. Changes including, but not limited to, regulations,
weather, timber/vegetation removal and usage/development of the site or nearby properties
can alter the findings and opinions presented in this report. We recommend that this report only
be used for preliminary planning purposes. Agency verification(s), followed by a survey of
jurisdictional features, are required to determine the exact extent and locations of jurisdictional
features and are valid for a period of up to five years following issuance of a USACE Jurisdictional
Determination (JD) and/or NCDEQ-DWR Site Determination Letter.
Scope of Services
Pilot was contracted to perform a stream/wetland determination for two drainage swales located
on a property southwest of South Jim Minor Road in Mebane, Alamance County, North Carolina.
The drainage swales are located on the parcel identified on the Alamance County Geographic
Information System (GIS) as parcel identification number (PIN) 9802589583. The scope of
services included a determination of jurisdictional features (streams, wetlands and other surface
waters) within the drainage swales.
Literature Review
We reviewed the U.S. Geological Survey (USGS) Topographic Map and the U.S. Department of
Agriculture (USDA) Soil Survey of Alamance County.
• The USGS Topographic Map (Drawing 1) does not depict surface waters or wetlands within the
drainage swales that were evaluated during this study. Haw Creek and an unnamed tributary to
Haw Creek are located immediately down -gradient of the drainage swales.
• The Published Soil Survey of Alamance County (Drawing 2) depicts an unnamed tributary to Haw
Creek and wet areas within the southern drainage Swale. Features are not depicted in the
northern drainage Swale.
Field Determination
Pilot conducted the site visit on August 23, 2019. The areas evaluated include two drainage
swales that contain wooded land. Ponds, streams and wetlands were not observed within the
drainage swales. The drainage swales contain erosional features that are vegetated with low-
lying herbaceous species, including Japanese stilt grass. Hardwood trees and saplings were
observed in several areas within the base of the Swale. The soils within the features are bright
and appear well -drained. Neither standing nor flowing water was present. Based on our
observations, the drainage swales do not contain jurisdictional streams or wetlands subject to
regulation by the USACE or NCDEQ-DWR. An NCDEQ Stream Identification Form, documenting
iA

Wetland Determination
Pilot Project 5090
August 26, 2019
our observations that streams are not present, was completed within the southern Swale (the
larger Swale where stream is depicted on the USDA Soil Survey).
Streams were observed immediately down -gradient of the evaluated swales. Drawing 3 shows
the approximate locations of the adjacent streams.
Watershed Classification
According to the NCDEQ-DWR, the site is located in the Cape Fear River Basin. Back Creek and an
unnamed tributary to Back Creek are located immediately down -gradient of the drainage swales
that were evaluated. The NCDEQ-DWR has classified Back Creek, the receiving waters of the
drainage swales, as WS-V; nutrient sensitive waters (NSW).
Additionally, the site is located in the Jordan Lake Watershed. State regulated riparian buffers are
required adjacent to intermittent and perennial streams as depicted on the most recent versions of
the USGS Topographic Map (Drawing 1) and the last published USDA Soil Survey (Drawing 2). A
stream is depicted within the southern drainage Swale that was evaluated on the last published
USDA Soil Survey (Drawing 2). Based on our observations, a stream is not located within the
drainage Swale. A buffer determination by the NCDEQ-DWR or local designated buffer authority is
required since there is a discrepancy between USDA Soil Survey and that observed in the field.
The streams located immediately down -gradient of the evaluated drainage swales are depicted on
Drawings 1 and 2 and were observed during our site visit. These streams are subject to state
regulated riparian buffer requirements. Additionally, consultation with the local zoning authority is
recommended to determine local buffers/stormwater setback requirements.
Summary
Pilot has completed a stream/wetland determination on the site. Pilot has prepared the
necessary submittals to request concurrence by the NCDEQ-DWR. The determination is based
on our field observations and is subject to change during verification(s) by the regulatory
agencies. Additionally, the local municipality should be contacted to determine local surface
water buffer/stormwater set -back requirements for the site.
3

Wetland Determination
Pilot Project 5090
August 26, 2019
Closing
We appreciate the opportunity to provide our services to you. Please contact us at (336) 310-
4527 if you have questions or require additional information.
Sincerely,
David S. Brame, PWS
Senior Project Manager
4�) -/ f��
Michael T. Brame, PWS
Principal
Attachments: Drawing 1— USGS Topographic Map
Drawing 2 — Published Soil Map
Drawing 3 — Stream/Wetland Map
NC DWQ Stream Identification Form
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LEGEND
Site Boundary
Evaluation Area
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1
USGS Topographic Map
Drawin
g Drainage Swale Evaluation
USGS Topographic Ma ... -
p -_ s`:: Winding Creek Subdivision
Mebane, NC Quadrangle PIL01. M Mebane Alamance County, NC
Scale: 1"=2,000' PILG7 9NV1R0NMIN7AL,INC Pilot Project5090

Drawing 2
USDA Soil Survey
of Alamance County, NC
Published 1960, Sheets 19 & 20
Not to Scale
c'L
PIL131P I L 0 T 9 N V I A 0 N M I X T A L, I N L
Published Soil Map
Drainage Swale Evaluation
Winding Creek Subdivision
Mebane, Alamance County, NC
Pilot Project 5090

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LEGEND
r,
Site Boundary ,�
�r Evaluation Area -
Ctraa m
i.�� •
Drawing 3`.• -`; �.;' Stream/Wetland Map
2018 Aerial Imagery from Google Earth 4.'v <.:"°" _ Drainage Swale Evaluation
and Pilot Field Notes -_- -r `-- Winding Creek Subdivision
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Scale: 1" = 400' Mebane, Alamance County, NC
Date:8.26.2019 PILOT FNVIRO�IYEN"AL,IW[ Pilot Project5090

ITC DWO Stream Identificatton Form Version 4.111
Datc 8.23.2019
ProjentlSite, Winding Creek Sub
Latitude: 36.0259350
Evaluation Brame, Pilot
countY: Alamance
Longitude:-79.3186360
Total Points,
Sfmff kast intwPAeur 7.5
s etermina#kart (circle one)
Other Mebane
m is .9 r
if 2! 19 or nniar it a 30'
ephemeral Int$rmigerlt Perennial
Pg OU410Narr�'
A. Geornor hold (Subtotal != 3.5 1
Absent
Weak
Moderate
Strong
1° Continuity of channel bMd and bank
0
1
2
3
2. Sinuosity of channel along thaNveg
1
2
3
S. In -channel structure- ex. riffle -pool, step- col,
rl Ie- of S uenc
CD
1
3
4 Partrcla -,ize of stream substrmts
0
1
2
3
5. Akcfire�rehctfloodplain
CD
1
3
E5 GOpoWtionaI bars or benches
CID
1
2
3
7. Rerent allwaal deposits
0
1
27
3
8 Weadcuts
1
2
3
9. Grade con;r❑O
Q
(0---)
1
1.5
10 Natural volley
0
05
CID
1.5
11 Semnd or greater order channel
No
3
" artificial t9tches am not rated. sea dlscumans In manunl
B. Hydrology {Subtotal = 2 1
12 Presence of Ba!Wlo
®
1
2
3
13 Iron pxidlzing bacteria
0
12
3
14 Leaf litter
15
1
0.5
0
1 , Sediment arl plants or debris
0
CO
1
1.5
16. Organic detrns lines or piles
0
0.
1
1.5
17- Soil -based evidence of high water tgbre?
No 0
Yes = 3
C. &aloav (Subtotal =
1S. Fibrous roots in streembed
3
2
1
0
19 Rooted uirland #giants In streambed
3
2
1
0
20- Macwbenthos mote dwersityand &bundance)
11
1
2
3
21. Aquatic Mollusks
0
1
2
3
22. Fish
Q
0.6
1
1.5
23. Crayfish
0
0-5
1
1.5
24 Amphibians
0
0.6
1
1.5
25- Algae
0
0-5
1
1.5
26 VJeftnd pknts In strearnbed
FA Q 0-75: OBL =1 a
Other (---0)
'perennial str4ams may also be Identilled umnq other methods See p. M cf nianual.
Motes: There are no features with e ne
beds or banks or evidence of an ordinary high-water
mar
within the drainage swale- The soils
are brigbt Tnd Qjjear
well drained- The
drainage swale
is
ephemeral and carries surface water during and immediately following a precipitation event.
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