20190868 Ver 1_Notice of Initial Credit Release_20220729

Hamilton, Ryan
From:Davis, Erin B
Sent:Wednesday, September 7, 2022 12:37 PM
To:Hamilton, Ryan
Subject:FW: \[External\] RE: Notice of Initial Credit Release / NCDMS Dynamite Creek/
SAW-2019-00909 / Rockingham Co.
Follow Up Flag:Follow up
Flag Status:Flagged
Laserfiche Upload: Email
DWR#: 20190868 v.1
Doc Date: 7/29/22
Doc Type: Mitigation Information
Doc Name: Same as email subject

From: Jason Lorch <[e-mail]>
Sent: Friday, July 29, 2022 10:53 AM
To: Kim Browning <[e-mail]>; Dow, Jeremiah J <[e-mail]>
Cc: Crocker, Lindsay <[e-mail]>; Crumbley, Tyler A CIV USARMY CESAW (USA)
<[e-mail]>; 'Haywood, Casey M CIV USARMY CESAW (USA)' <IMCEAEX-
_o=ExchangeLabs_ou=Exchange+20Administrative+20Group+20+28FYDIBOHF23SPDLT+29_cn=Recipients_cn=225d3fe2
[e-mail]>; Tugwell, Todd J CIV USARMY
CESAW (US) <[e-mail]>; Davis, Erin B <[e-mail]>; Bowers, Todd
<[e-mail]>; [e-mail]; Wilson, Travis W. <[e-mail]>; Munzer,
Olivia <[e-mail]>; Merritt, Katie <[e-mail]>; Harmon, Beth
<[e-mail]>; Stanfill, Jim <[e-mail]>; Recktenwald, Marc
<[e-mail]>; Fennel, Tommy E CIV USARMY CESAW (USA) <[e-mail]>
Subject: \[External\] RE: Notice of Initial Credit Release / NCDMS Dynamite Creek/ SAW-2019-00909 / Rockingham Co.

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Kim, we will address the IRT’s comments in the MY1 Report. As for justifying EI ratio, during the initial IRT site walk a
map was provided to the IRT showing suggested intervention along Dynamite Creek Reach 5, which at the time did not
include channel realignment and closely matched the level of work done on the reach. The IRT agreed that a light touch
in this area was the approach that should be taken, with intervention enough to uplift the level of erosion on several of
the meander bends and that this justified an E1 approach. During the design phase, a slight realignment to protect these
bends was proposed. The alignment would require bed stabilization in the form of riffles and log sills. However, during
construction, the Contractor evaluated the bends and was able to construct brush toes without harming the large trees
on the bank. The point bars were then shaved back. This gentled the proposed thalweg pattern, as was desired, without
having to do an entire realignment. The riffle material is natural embedded colluvium ranging from sands and gravels to
Class B size. Macroinvertebrates and salamanders were found in similar riffles on this reach, so it was determined that
reducing impact to bed material would be a greater benefit to this reach. In the end the construction met the goals of
this reach by providing only the impact necessary to uplift the stream and prevent continued lateral destabilization.
Wildlands feels that the work completed on Dynamite Creek Reach 5 justifies enhancement I credit. Let me know if you
have any questions or comments. Thanks!

1

Jason Lorch, GISP | Senior Environmental Scientist
O: 919.851.9986 x107 M: 919.413.1214

Wildlands Engineering, Inc.
312 West Millbrook Road, Suite 225
Raleigh, NC 27609

From: Browning, Kimberly D CIV USARMY CESAW (USA) <[e-mail]>
Sent: Monday, June 27, 2022 4:26 PM
To: Dow, Jeremiah J <[e-mail]>
Cc: Crocker, Lindsay <[e-mail]>; Jason Lorch <[e-mail]>; Crumbley, Tyler A CIV
USARMY CESAW (USA) <[e-mail]>; 'Haywood, Casey M CIV USARMY CESAW (USA)'
<IMCEAEX-
_o=ExchangeLabs_ou=Exchange+20Administrative+20Group+20+28FYDIBOHF23SPDLT+29_cn=Recipients_cn=225d3fe2
[e-mail]>; Tugwell, Todd J CIV USARMY
CESAW (USA) <[e-mail]>; Davis, Erin B <[e-mail]>; Bowers, Todd
<[e-mail]>; Matthews, Kathryn H <[e-mail]>; Wilson, Travis W.
<[e-mail]>; Munzer, Olivia <[e-mail]>; Merritt, Katie
<[e-mail]>; [e-mail]; [e-mail]; Recktenwald, Marc
<[e-mail]>; Fennel, Tommy E CIV USARMY CESAW (USA) <[e-mail]>
Subject: Notice of Initial Credit Release / NCDMS Dynamite Creek/ SAW-2019-00909 / Rockingham Co.

Good afternoon Jeremiah,

The 15-Day As-Built/MY0 review for the Dynamite Creek Mitigation Site (SAW-2019-00909) ended June 15, 2022. This
review was done in accordance with Section 332.8(o)(9) of the 2008 Mitigation Rule. All comments received from the
NCIRT are incorporated in the email below. Please address IRT concerns in the MY1 Report and reply to this email with
satisfactory justification for the E1 reach ratio due to the construction changes and, thereby, less functional uplift. There
were no objections to issuing the initial (30% ) credit release of 1,080.510 warm SMUs and 2.756 riparian
WMUs. Please find attached the current signed ledger. The IRT is not requesting a site visit at this time.

USEPA Comments, Todd Bowers:
* Minimal adjustments were made during construction, where needed, based on field evaluations. All deviations
noted in the report are minor (structure locations, minor GPS errors and suitable replacements/adjustments due to lack
of brush).
* No stream areas of concern were identified at this time. Cross-sections show streams are stable and functioning
as designed. ERs are over 2.2 and BHRs are below 1.2.
* There are no vegetation areas of concern. Average stem density across the site is 595 planted stems per acre
and all 13 vegetation plots are meeting interim success criteria.
* Crest gauge installed on Dynamite Creek Reach 6 for MY1 hydrology data collection.
* Ten groundwater gauges and one soil temperature probe were installed across wetland areas for MY1
groundwater monitoring and data collection.
* No adaptive management plan needed at this time.
* No issues of conservation easement encroachment.
Overall, I am very satisfied with the report and the work that has been completed at the site. Having not been on-site, I
really appreciated the detailed ground-level stream and veg plot photos. I recommend the appropriate credit release
(Milestone 2) for warm stream and riparian wetland mitigation units for this monitoring milestone. I have no other
substantial comments at this time.

USACE Comments, Casey Haywood:
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1. Dynamite Creek Reach 5- It was noted that the proposed riffles and log sills were not installed due to the
channel not being realigned and to save existing trees. What is the condition of the bed material in this reach? The
mitigation plan indicated the reach was proposed for EI based on the level of intervention and potential for ecological
uplift. What was the overall percentage of the reach that was worked on to provide functional uplift to justify the ratio?
2. Why were some of the structures not able to be located (valley sills, log sills, brush toe and cover log)?
3. The drone footage was appreciated and helpful for the review. Overall, the Site looks good and appears to be
functioning as designed.

NCDWR Comments, Erin Davis:
1. DWR supports/reiterates USACE’s questions and comments.
2. How were the added cover logs anchored with the brush toe? Were footer logs used?
3. Please confirm that vernal pools excavated greater than 1 foot do not overlap wetland credit area.
4. Invasives were noted to be “much removed” during construction. Please target remaining invasives during MY1.

Please reach out with any questions.
Thank you,
Kim

Kim (Browning) Isenhour
Mitigation Project Manager, Regulatory Division I U.S. Army Corps of Engineers l 919.946.5107

-----Original Message-----
From: Haywood, Casey M CIV USARMY CESAW (USA) <[e-mail]>
Sent: Tuesday, May 31, 2022 10:07 AM
To: Tugwell, Todd J CIV USARMY CESAW (USA) <[e-mail]>; Browning, Kimberly D CIV USARMY
CESAW (USA) <[e-mail]>; Davis, Erin B <[e-mail]>; Bowers, Todd
<[e-mail]>; Matthews, Kathryn H <[e-mail]>; [e-mail]; Twyla
Cheatwood - NOAA Federal ([e-mail]) <[e-mail]>; Wilson, Travis W.
<[e-mail]>; Munzer, Olivia <[e-mail]>; Merritt, Katie
<[e-mail]>
Cc: Crocker, Lindsay <[e-mail]>; Dow, Jeremiah J <[e-mail]>; Jason Lorch
<[e-mail]>; Crumbley, Tyler A CIV USARMY CESAW (USA) <[e-mail]>
Subject: Notice of NCDMS As-Built Review /Dynamite Creek/ SAW-2019-00909 / Rockingham Co.

Good morning IRT,

The below referenced FINAL Record Drawing (As-Built) Report review has been requested by NCDMS. Per Section
332.8(o)(9) of the 2008 Mitigation Rule, this review follows the streamlined review process, which requires an IRT
review period of 15 calendar days from this email notification. Please provide any comments by 5 PM on the 15-day
comment deadline shown below. When providing comments please indicate if your concerns are great enough that you
recommend not issuing the credit release. Comments provided after the 15-day comment deadline (shown below) may
not be considered.

At the conclusion of this comment period, a copy of all comments will be provided to NCDMS and the NCIRT along with
District Engineer's intent to approve or disapprove this Final Record Drawing and initial credit release.

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15-Day Comment Start Date: May 31, 2022

15-Day Comment Deadline: June 15, 2022

45-Day Credit Release Approval Deadline: July 15, 2022

Project information and location of the FINAL As-Built Baseline Monitoring Report (MY0):

Name: Dynamite Creek

USACE ID: SAW-2019-00909

DWR ID: 20190868

DMS Project #: 100125

RFP: 16-007727—Issued 11/13/2018

Institution: 5/16/2019—Full Delivery

River Basin: Roanoke 03010103

County: Rockingham

Mitigation Plan Assets: 3,601.700 SMUs (Warm) / 9.191 WMUs

Provider: Wildlands Engineering, Inc., Jason Lorch, 919-851-9986

DMS PM: Jeremiah Dow, 919-218-0226

Please note:

Stream construction was completed November 2021 and planting was completed January 2022; 2022 will be
Monitoring Year 1 for this project. Deviations from the construction plan are shown in Section 2 of the report. The as-
built stream length is 44 linear feet more than the centerline design length. No change in project stream credits is
requested.

The final baseline (as-built) report, record drawings, and video were uploaded to the DMS/IRT SharePoint, and DWR
Laserfiche for IRT review

https://ncconnect.sharepoint.com/sites/IRT-DMS/SitePages/Home.aspx
<Blockedhttps://ncconnect.sharepoint.com/sites/IRT-DMS/SitePages/Home.aspx>
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A video of the site is available here: Dynamite Creek As-built Video
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Or08w0gaDC7iQ1qMePh0FYtIAqqktNo3F4Ronic-M-xPB3osfckyTex6Hig$>

RIBITS:

https://ribits.ops.usace.army.mil/ords/f?p=107:278:4551832114669:::RP,278:P278_BANK_ID:5408

Thanks,

Casey Haywood

Mitigation Specialist, Regulatory Division I U.S. Army Corps of Engineers

[phone] work cell

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