[External] Notice of Credit Release Approval/RES Catawba 01-Dogtown Site/SAW-2017-00608/Catawba County

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Good afternoon Daniel and Jamey,

This correspondence is in reference to the monitoring report and credit release request submitted for the RES Catawba 01 Umbrella Mitigation Bank, Dogtown Mitigation Site, Action ID
SAW-2017-00608. The purpose of this letter is to transmit comments provided by the NC Interagency Review Team (NCIRT) during the review of the monitoring report and to confirm the
annual credit release. The review of the annual monitoring report followed procedures outlined in Section 332.8(o)(9) of the Mitigation Rule. The comments listed below were provided
by the NCIRT during this process. While it is not necessary to provide a response to specific comments at this time, please be sure to address the issues raised in future monitoring
report submittals.

Emily Dunnigan, USACE

1. Additional boundary marking was added during MY1. Did something happen to trigger additional marking (encroachment, sign damage, etc)?

2. The most downstream log sill on DT4 is going to be reset in 2024 to address piping issues. In future reports please include photographs of issues in the report,
both pre-repair and post-repair. It would have been nice to have more details of the proposed repair (Will this be done by hand or with machinery? Are any changes being made to the
structure/placement? When in 2024 do you anticipate this will be completed? Will additional planting need to be done? Etc.) I assume the repair is not large enough to trigger an adaptive
management plan.

3. The report indicated the site was transporting sediment as designed, yet in channel vegetation is being treated to reduce sedimentation. Please keep in mind that
no channel maintenance should be conducted after MY3 except for invasive species management or after discussion and approval by the IRT.

4. Two of the stage recorders did not record bankfull events in 2023, but RES indicated other bankfull evidence was noted across the site. Why were the other indicators
not included in this report? For future reports please include all applicable data (photographs of deposition, wrack lines, etc.) as evidence of bankfull, particularly if the stage
recorded did not capture any events.

5. According to section 1.7.3 a flow gauge on DT2A was installed in June, but the data/tables indicate it was installed in March. Please clarify/update.

6. Please QA/QC gauge labels throughout the report and appendices. Some gauge names and associated streams don’t match.

7. Please label the flow gauges and stage recorders on the CCPVs.

8. Quercus alba was not on the approved planting list, please change it to a volunteer in future reports and/or formally request the species be approved to meet success
criteria.

9. Please include more detail of any maintenance actions in future reports. What invasive species were treated and how big of an area? What was the acreage of supplemental
planting? Where did the in-channel vegetation maintenance occur? Etc. Please include any maintenance areas (veg or otherwise) on the CCPV.

10. Did the vegetation surveys include the supplemental planting that occurred in October/November?

11. Please use the same green color for successful random and fixed veg plots. And use 1 color (preferably red) for veg plots that are unsuccessful.

12. During the IRT as-built site visit the IRT requested annual reports include condition of the BMPs on DT1-A and DT2-B and photographs. These were missing from this year’s
report, please include in future reports.

13. Please include past meeting minutes and IRT monitoring review comments in the Appendices with comment responses.

Based on our review of the monitoring report and the results of the NCIRT review, we confirm that you have satisfied requirements included in the approved banking instrument and mitigation
plan for this site. Accordingly, with this correspondence we confirm the release of credits as shown on the table below and on the attached credit release schedule. The District ledger
on the Regulatory In-lieu Fee and Bank Information Tracking System has also been updated to reflect this transaction.

Release Activity

MY1

Date of Release

5/20/2024

Credit Classification

Stream Credits

Wetland Credits

Warm Water

Cool Water

Cold Water

Riparian Riverine

Riparian
Non-Riverine

Non-Riparian

Coastal

Current Credit Release Request

857.972

-

-

-

-

-

-

Approved Credit Release

857.972

-

-

-

-

-

-

Credits Not Released (if any)

-

-

-

-

-

-

-

Total Credits Released to Date

3507.986

-

-

-

-

-

-

Thank you for your interest in restoring and protecting waters of the United States. Please note that this electronic copy is an official Department of Army notification regarding this
transaction. If you have questions regarding this email, please contact me by email at [e-mail] or telephone [phone]

Emily Dunnigan

Mitigation Specialist, Regulatory Division

U.S. Army Corps of Engineers, Wilmington District

[e-mail] <mailto:[e-mail]>

[phone]

Enclosure

cc (by email):

NCIRT Distribution List

oft-antispamX

8. Quercus alba was not on the approved plan?ng list, please change it to a volunteer in future reports and/or
formally request the species be approved to meet success criteria.
9. Please include more detail of any maintenance ac?ons in future reports. What invasive species were treated
and how big of an area? What was the acreage of supplemental plan?ng? Where did the in-channel
vegeta?on maintenance occur? Etc. Please include any maintenance areas (veg or otherwise) on the CCPV.
10. Did the vegeta?on surveys include the supplemental plan?ng that occurred in October/November?
11. Please use the same green color for successful random and fixed veg plots. And use 1 color (preferably red)
for veg plots that are unsuccessful.
12. During the IRT as-built site visit the IRT requested annual reports include condi?on of the BMPs on DT1-A
and DT2-B and photographs. These were missing from this year’s report, please include in future reports.
13. Please include past mee?ng minutes and IRT monitoring review comments in the Appendices with comment
responses.

Based on our review of the monitoring report and the results of the NCIRT review, we confirm that you have sa?sfied
requirements included in the approved banking instrument and mi?ga?on plan for this site. Accordingly, with this
correspondence we confirm the release of credits as shown on the table below and on the a?ached credit release
schedule. The District ledger on the Regulatory In-lieu Fee and Bank Informa?on Tracking System has also been updated
to reflect this transac?on.

Release Activity MY1 Date of Release 5/20/2024
Stream Credits Wetland Credits
Riparian
Credit Classification
Warm Cool Cold Riparian Non-
Non-Coastal
Water Water Water Riverine Riparian
Riverine
- - - -
Current Credit Release Request 857.972 - -
- - - - -
Approved Credit Release 857.972 -
- - - - -
Credits Not Released (if any) - -
- - - - -
Total Credits Released to Date 3507.986 -

Thank you for your interest in restoring and protec?ng waters of the United States. Please note that this electronic copy
is an official Department of Army no?fica?on regarding this transac?on. If you have ques?ons regarding this email,
please contact me by email at [e-mail] or telephone [phone]

Emily Dunnigan
Mitigation Specialist, Regulatory Division
U.S. Army Corps of Engineers, Wilmington District
[e-mail]
[phone]

Enclosure

cc (by email):
NCIRT Distribu?on List
2