20221197 Ver 1_2200811 PCN Project Narrative_20220923

3027 North Tryon Stream
Restoration Project Narrative

Prepared by:

Prepared For:

Jonathan Hinkle, PE
Engineering Manager – GPI
1308 HWY 258 N
Kinston, NC 28504
910.663.4123
[e-mail]
NCBELS: F-0441

Joel Albea
Vice President of Development
1020 NE Loop 410, Suite 700
San Antonio, TX 78209
979.571.0647
[e-mail]

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Project Narrative.docx

September 1, 2022
Bryan Roden-Reynolds, PWS
Senior Regulatory Project Manager
U.S. Army Corps of Engineers
Wilmington District
8430 University Executive Park Drive
Charlotte, NC 28262
[e-mail]
Office: [phone]

Subject: 3027 North Tryon Stream Restoration Project Narrative
Dear Mr. Roden-Reynolds:
GPI has been tasked with designing a stream restoration at 3027 North Tryon Street in
Charlotte, NC. The existing stream reach is approximately 784 feet long and contains
two culverts totaling approximately 100 feet. The photos below show that the stream
banks have multiple failures, and a portion of the stream has no vegetative buffer. The
preliminary design can be seen in the exhibit attached, which currently includes
approximately 134 additional linear feet of stream. Proposed example cross sections are
also displayed on the exhibit that demonstrates the bankfull floodplain and the native
riparian vegetative buffer. The tables in the exhibit illustrate how the proposed changes
increase the functional lift of the stream by 743%. Providing a consistent pool-riffle
sequence and broadening the flood-prone area, the stream classification would change
from a Gc to C, which is more indicative of a stream in this area.

Greenman-Pedersen, Inc. (GPI)
Sincerely,

Jonathan D. Hinkle, PE
Lead Environmental Engineer / North Carolina Engineering Manager
Assistant Vice President
[e-mail]
910.663.4123

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Project Photos

Photo 1 Photo 2 Photo 3

Photo 4 Photo 5 Photo 6

Photo 7 Photo 8 Photo 9

Photo 10 Photo 11 Photo 12

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Threatened and Endangered Species

General Landscape Description
This site is less than 1 acre of an unnamed tributary to Little Sugar Creek. It is located near
the intersection of North Tryon Street and Atando Ave in Charlotte, Mecklenburg County,
North Carolina. The site can be found at LAT: 35°15'08.9"N Long: 80°48'41.6"W. The
elevation is approximately 690 ft.

Methodology
The US Fish and Wildlife Service website was referenced to determine the occurrence of
Threatened, Endangered and Protected species for Mecklenburg County North Carolina, the
results of which are listed below (Table 1). The site was investigated in October 2021.

Table #1: Threatened/Endangered/Protected Species List for Mecklenburg County
Group Scientific Name Common Name ESA Listing Status
Invertebrate Fusconaia masoni Atlantic pigtoe Threatened
Invertebrate Danaus plexippus monarch butterfly Candidate
Flowering
Plant
Rhus michauxii Michaux's sumac Endangered
Invertebrate Lasmigona decorata Carolina heelsplitter Endangered
Mammal Myotis lucifugus Little brown bat Under Review
Mammal Perimyotis subflavus Tricolored bat Under Review
Flowering
Plant
Echinacea laevigata Smooth coneflower Endangered
Flowering
Plant
Symphyotrichum georgianum Georgia aster Resolved Taxon
Flowering
Plant
Eurybia mirabilis Piedmont Aster Species of Concern
Flowering
Plant
Helianthus schweinitzii Schweinitz's sunflower Endangered
Bird Haliaeetus leucocephalus Bald Eagle Protected under the
Bald and Gold Eagle Act
Mammal Myotis septentrionalis Northern Long-Eared Bat Threatened

Results
The study area includes the channel and immediate buffer of the stream, which runs
southernly through the parcels, from just West of Atando Ave, running towards Little Sugar
Creek.

The stream has been channelized and modified in places with stone. There are very thin strip
buffers along the banks, and in some areas, there is no vegetation due to a gravel developed
parking lot. The mix of native and cultivated tree and shrub species present include Willow
Oak (Quercus phellos), Red Maple (Acer rubrum), Japanese Maple (Acer palmatum), River

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Birch (Betula nigra), Red Cedar (Juniperus virginiana), Wax Myrtle (Myrica cerifera), Black
Willow (Salix nigra), English Boxwood (Buxus sempervirens), Holly (Ilex spp.), and Chinese
Privet (Ligustrum sinense).

T&E Results
• There is no suitable habitat on this site for Schweinitz’s Sunflower, Michaux’s Sumac
and Smooth Coneflower, and none of these species were present.
• This project location is urban and does not have the habitat characteristics required
to support populations of the Carolina Heelsplitter. Based on existing documentation,
Carolina Heelsplitter populations have not been previously identified within this basin.
• Comparing this site location to the USFWS Asheville office’s website
(https://www.fws.gov/asheville/htmls/project_review/NLEB_in_WNC.html) it appears
that the site meets the “exempt” criteria which requires no further action under section
7 of the Endangered Species Act for the Northern Long-eared Bat.
• Comparing this site location to the USFWS Range Map for Rusty-patched Bumble
Bee (https://www.fws.gov/midwest/endangered/insects/rpbb/rpbbmap.html)
Mecklenburg County is in its Historic Range, and as such, Section 7 consultation is
not needed. GPI concludes that Rusty-patched Bumble Bee is not present.

Recommendations
Based on the site investigation and the review of available data, GPI did not identify any
protected species occurring on the subject property. No further investigation of the presence
of protected species on this site is recommended at this time.

NC Division of Water Quality –Methodology for Identification of Intermittent and
Perennial Streams and Their Origins v. 4.11
41
NC DWQ Stream Identification Form Version 4.11
Date: Project/Site: Latitude:
Evaluator: County: Longitude:
Total Points:
Stream is at least intermittent
if ≥ 19 or perennial if ≥ 30*
Stream Determination (circle one)
Ephemeral Intermittent Perennial
Other
e.g. Quad Name:
A. Geomorphology (Subtotal =_________)Absent Weak Moderate Strong
1a. Continuity of channel bed and bank 0 1 2 3
2. Sinuosity of channel along thalweg 0 1 2 3
3. In-channel structure: ex. riffle-pool, step-pool,
ripple-pool sequence 0 1 2 3
4. Particle size of stream substrate 0 1 2 3
5. Active/relict floodplain 0 1 2 3
6. Depositional bars or benches 0 1 2 3
7. Recent alluvial deposits 0 1 2 3
8. Headcuts 0 1 2 3
9. Grade control 0 0.5 1 1.5
10. Natural valley 0 0.5 1 1.5
11. Second or greater order channel No = 0 Yes = 3
a artificial ditches are not rated; see discussions in manual
B. Hydrology (Subtotal = _________)
12. Presence of Baseflow 0 1 2 3
13. Iron oxidizing bacteria 0 1 2 3
14. Leaf litter 1.5 1 0.5 0
15. Sediment on plants or debris 0 0.5 1 1.5
16. Organic debris lines or piles 0 0.5 1 1.5
17. Soil-based evidence of high water table?No = 0 Yes = 3
C. Biology (Subtotal = _________)
18. Fibrous roots in streambed 3 2 1 0
19. Rooted upland plants in streambed 3 2 1 0
20. Macrobenthos (note diversity and abundance)0 2 3
21. Aquatic Mollusks 0 1 2 3
22. Fish 0 0.5 1 1.5
23. Crayfish 0 0.5 1 1.5
24. Amphibians 0 0.5 1 1.5
25. Algae 0 0.5 1 1.5
26. Wetland plants in streambed FACW = 0.75; OBL = 1.5 Other = 0
*perennial streams may also be identified using other methods. See p. 35 of manual.
Notes:
Sketch:
02/03/2022 3027 North Tryon
Stream Restoration 35°15'08.9"N
80°48'41.6"WMECKLENBURG COUNTYLevi Masters
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