20181273 Ver 1_Mitigation Information_20220113

From: Davis, Erin B
To: Baker, Caroline D
Subject: FW: [External] RE: Bug Headwaters
Date: Tuesday, January 18, 2022 9:54:40 AM
Attachments: IRTcorrespondence- Reduced.pdf
Laserfiche Upload: Email & Attachment
DWR #: 20181273 v.I
Doc Type: Mitigation Information
-----Original Message -----
From: Browning, Kimberly D CIV USARMY CESAW (USA) [mailto:Kimberly.D.Browning�q)usace.army.mil]
Sent: Thursday, January 13, 2022 4:15 PM
To: Jason Lorch <[e-mail]>
Cc: Reid, Matthew <[e-mail]>; Jeff Keaton <[e-mail]>; Leslie, Andrea J
<[e-mail]>; Wilson, Travis W.<travis.wilson(oncwildlife.org>; Haywood, Casey M CIV
USARMY CESAW (USA) <Casey.M.Haywood(ousace.army.mil>; Davis, Erin B <erin.davis(0ncdenr.gov>;
Tugwell, Todd J CIV USARMY CESAW (US)<[e-mail]>; Wiesner, Paul
<paul.wiesner(0ncdenr.gov>
Subject: [External] RE: Bug Headwaters
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Hi Jason,
Erin, Travis, Andrea, Casey and I discussed this and since this is only the first year for this project, the IRT is OK
with the proposed treatment of the murdannia. If this was later in monitoring, we'd likely require an adaptive
management plan. It is concerning that it is already covering a large portion of the site. From my understanding,
glyphosate is somewhat effective; however, it will likely eliminate the herbaceous layer as well. We anticipate that
several years of treatment will be required until the present seed source has germinated and been treated. Once the
murdannia has been eliminated from the site, we will require a native herbaceous seed mix to be planted. Hopefully
you will be able to treat it in the wetland areas that are adjacent to the conservation easement as well.
Regarding the pond beds, was the site constructed during a wet time of year that prevented you from removing the
sediment from the pond bottom prior to planting? Is the sediment dried and cracking? Does the replanting include
removing the old sediment and applying soil amendments, or do you feel that the areas have drained enough that a
second planting would be successful? We've observed many restoration projects through old pond beds where the
sediment was not removed and it results in a fractured surface with a herbaceous layer and very limited stem
survival. We would suggest that you look at the wetland indicator status for the proposed species and only plant
those that are FACW and OBL; for example, Northern Red Oak is FACU. Lastly, we'll require additional veg
transects in the replanted areas to monitor success.
Please follow up with more details for the pond bed replanting. Reach out with any questions.
Thanks
Kim
Kim Browning
Mitigation Project Manager, Regulatory Division I U.S. Army Corps of Engineers
-----Original Message -----
From: Jason Lorch <[e-mail]>
Sent: Friday, January 07, 2022 2:40 PM
To: Browning, Kimberly D CIV USARMY CESAW (USA) <[e-mail]>; Davis, Erin
B <[e-mail]>

Cc: Reid, Matthew <[e-mail]>; Jeff Keaton <[e-mail]>
Subject: [URL Verdict: Neutral][Non-DoD Source] Bug Headwaters
Kim and Erin, I wanted to give you a quick update on Bug Headwaters and make sure you are fine with our
proposed management of the project this year. The first issue is that murdannia is growing in the wetlands and
streams throughout the project. Attached are the CCPV Maps showing the locations of the murdannia and the
Vegetation Condition Assessment Table from the MYl Monitoring Report. The plan is to spray the murdannia site -
wide in May and assess the site a month later to determine what further actions will be necessary. A follow up
treatment will most likely be necessary, but until we see how the murdannia responds to the original treatment, we
won't know what our plan of action will be.
The second issue is that portions of the old pond beds are very saturated and a majority of the planted trees have not
survived. This encompasses an area of 1.75 acres, approximately 9% of the planted area of the site. Attached is a
proposed planting list with the species, type of plant, quantities, and a note to which plants were in the approved
Mitigation Plan. The plan is to plant these areas in late February 2022.
If you could review the attached information and let us know if you have any concerns with our management plan
moving forward, it would be greatly appreciated. Let me know if you have any questions about it. Thanks!
Jason Lorch, GISP I Senior Environmental Scientist
0: 919.851.9986 x107 M: 919.413.1214
Wildlands Engineering, Inc. <Blockedhttp://www.wildlandseng.com/>
312 West Millbrook Road, Suite 225
Raleigh, NC 27609

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s
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— No Credit
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' --- Utility Line
Cross Sections
0 Reach Breaks
Figure 1, Current Condition Plan View Key
W I LD L IAN D S 0 350 700 Feet Bug Headwaters Mitigation Site
ENGNEERING
II DMS Project No. 100084
Monitoring Year 1 - 2021
Wilkes County, NC

a
ti
UT2A
Reach 2
um STA 201+36: Riffle covered in
sediment at As -Built. Will be
repaired or maintained as needed.
Big Bugaboo Creek
Reach 2
WWILDLANDS
ENGINEERING
i
UT2A
Reach 1
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. Conservation Easement Stream Restoration Stream Area of Concern - MY1
Internal Crossing Stream Enhancement I Murdannia
Existing Wetlands Stream Enhancement 11 C Reach Breaks
— Ephemeral Step -Pool BMP No Credit 0 Photo Points
® Pocket Wetland BMP --- As -Built Bankfull ♦ Barotroll
Vegetation Plot Condition - MY1 = s Fence ♦ Flow Gauge
ENCriteria Met- Fixed _—_ Utility Line Structures
Vegetation Area of Concern - MY1
Cross Sections
Murdannia
Figure 1a, Current Condition Plan View
0 150 300 Feet Bug Headwaters Mitigation Site
II I DMS Project No. 100084
Monitoring Year 1 - 2021
Wilkes County, NC

i Conservation Easement
No Credit
Internal Crossing
---
As -Built Bankfull
Existing Wetlands
=
s Fence
Vegetation Plot Condition - MY1
_—_
Utility Line
= Criteria Met- Fixed
Cross Sections
OCriteria Met - Random
Stream
Area of Concern - MY1
Vegetation Area of Concern - MY1
Murdannia
® Low Stem Density
C
Reach Breaks
Murdannia
0
Photo Points
Stream Restoration
Crest Gauge
Stream Enhancement I
Flow Gauge
Stream Enhancement 11
Structures
A
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UT2
Reach 3
Figure 11, Current Condition Plan View
W I LD L IAN D S 0 150 300 Feet Bug Headwaters Mitigation Site
ENGNEERING
I I I I DMS Project No. 100084
Monitoring Year 1 - 2021
Wilkes County, NC

Figure 1c, Current Condition Plan View
W I LD L IAN D S 0 150 300 Feet Bug Headwaters Mitigation Site
ENGNEERING
I I I DMS Project No. 100084
Monitoring Year 1 - 2021
Wilkes County, NC

Table 5. Vegetation Condition Assessment Table
Bug Headwaters Mitigation Site
DMS Project No. 100084
Monitoring Year 1- 2021
Planted Acreage 19.00
MFW
Mapping
Definitions
M (ac)
Combined
Acreage
% of Planted
Acreage
Bare Areas
Very limited cover of both woody and herbaceous material. 0.10
0
0%
Low Stem Density
Woody stem densities clearly below target levels based on current MY stem count
0.10
1.75
9%
Areas
criteria.
Total
1.75
9%
Areas of Poor Growth
Planted areas where average height is not meeting current MY Performance
0.10
0
0%
Rates
Standard.
Cumulative Total
1.75
9%
Easement Acreage 22.50
M of
ff7on 7ategolp' Definitions Lasement
Invasives may occur outside of planted areas and within the easement and will
6.61 29%
Invasive Areas of
therefore be calculated against the total easement acreage. Include species with the
Concern potential to directly outcompete native, young, woody stems in the short-term or 0.10
community structure for existing communities. Invasive species included in
summation above should be identified in report summary. 9,188 If* 100%
Encroachment may be point, line, or polygon. Encroachment to be mapped consists
Easement of any violation of restrictions specified in the conservation easement. Common 0 Encroachments Noted
Encroachment Areas encroachments are mowing, cattle access, vehicular access. Encroachment has no none /Oac
threshold value as will need to be addressed regardless of impact area.
'In -stream invasive vegetation (Murdannia spp. ) was documented in all stream channels using linear feet instead of acres

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