20181442 Ver 1_Dugout As-built Site Visit Minutes

M E M O R A N D U M

3600 Glenwood Ave., Suite 100 Raleigh, North Carolina 27612 | 919.209.1052 tel. [phone] fax

TO: NC IRT
FROM: Ben Carroll – RES
DATE: June 2, 2023 (discussion held on May 30, 2023)
RE: Summary of As-Built Site Visit for Cape Fear 05 UMBI Dugout Stream and Wetland
Mitigation Site, Cumberland County, NC
SAW-2018-01883
DWR #20181442

Attendees
Todd Tugwell, USACE
Erin Davis, USACE
Maria Polizzi, NCDWR
Mac Haupt, NCDWR
Ben Carroll, RES
Jamey McEachran, RES
Matt DeAngelo, RES

Date & Time
May 30, 2023 @ 9:30 a.m.

Project Summary
Construction, planting, and as-built set-up of the Dugout Stream and Wetland Mitigation Site, within the RES Cape Fear 05
UMBI, are now complete. As constructed, the Dugout site provides 6,534.133 warm stream mitigation units (SMUs) and
6.313 wetland mitigation units (WMUs).

Site Visit Discussion
o The IRT was open to the proposed TV1-C adaptive management but requested RES provide a sketch, an area of
disturbance, and a proposed monitoring approach before providing official approval to complete the work.
o The IRT requested additional easement marking along TV1-A and boundary ditch near TV1-B.
o The IRT requested photo points where swales confluence with main channel.
o The IRT requested photo points at noted meander erosion.
o The IRT requested floodplain pools and swales be shown on CCPV.
o The IRT requested RES remove the constructed swales from wetland crediting areas.
o On future projects the IRT suggested constructing wetlands as a terminus for required swales or adding in debris
jams to spread out the concentrated flow.
o The IRT requested RES add a wetland gauge directly adjacent to the swale near station 48+00.
o The IRT stated that the stream restoration looked successful but expressed concerns with the wetland re-
establishment areas on the downstream end of the project.
o The IRT expressed that the additional benching of GC4 will provide more floodplain access and should benefit the
stream, but RES should keep an eye on vegetative success due to impacted soil. The IRT also requested that such
changes to approach during construction should be communicated to them earlier for transparency.