20131140 Ver 1_IRT Memo_20180725

M E M O R A N D U M
302 Jefferson Street, Suite 110
TO: NCIRT; NCDMS
FROM: Ryan Medric - RES
DATE: 7/25/2018
fires
Raleigh, North Carolina 27605 919.209.1052 tel. [phone] fax
RE: Pee Dee MY3 IRT Credit Release Site Visit
Attendees: Todd Tugwell (USACE), Kim Browning (USACE), Mac Haupt (NCDWR), Paul
Wiesner (NCDMS), Melonie Allen (NCDMS), Harry Tsomides (NCDMS), David Godley (RES),
Brian Hockett (RES), Ryan Medric (RES)
Site Visit Date: July 12, 2018
The IRT, DMS, and RES had a site visit at the Pee Dee Stream Restoration Site to discuss credit
release. The main topic of discussion was the IRT's concern over the formation of the streams in
and above the old ponds on Thompson 1 and Dale 1. Additionally, invasive species were seen
throughout the easement. RES will need to continue to heavily treat the invasive species for the
rest of the monitoring period. Specific comments and concerns are below.
• Thompson 1 (100+00-102+50): The IRT noted that this reach had a defined flow path but
the lack of sorting in the bed material and uniform bedform were characteristic of a stream
with less than intermittent flow. It was determined that in order to receive credit on this
reach, RES would need to address the issues in the pond bottom below it. 250 feet of
Enhancement I credit will be withheld (166.7 SMUs).
• Thompson 1 (102+50-105+50): The stream channel in the pond bottom could not be found.
As it has been noted on previous site visits, the cracked soil from the pond bottom drying
causes any surface water to quickly drain. It is obvious where the channel picks back up
near the old dam location. In order to receive credit on any of Thompson 1, RES will need
to submit a Remedial Action Plan to address the channel forming and stream flow issues.
300 feet of Restoration credit will continue to be withheld (300 SMUs).
• Dale 1 (200+00-201+22): The reach above the pond bottom/wetland had better bedform
formation and sorting than the reach above the pond on Thompson. The IRT determined
that in order to receive credit on this reach, RES would need to install a flow gauge/camera
to document intermittent flow. Credits, however, will be withheld: 122 feet Enhancement
I (81.3 SMUs).
• Dale 1(201+22-203+75): This area consists of a wetland that formed in an old pond bottom
prior to construction. The stream channel is absent of targeted bedform and riffle/pool
sequence in this section. The IRT determined that to receive credits on this reach, RES

would need to develop a Remedial Action Plan to address the channel formation and flow
issues. 253 feet of Enhancement I credit will be withheld (168.7 SMUs).
• Dale 2: The IRT suggested that it would be a good idea to install a flow gauge/camera on
this reach preferably between XS 8 and 9 in order to help demonstrate at closeout that the
reach was obtaining at least intermittent flows.
• Hudson: DMS brought the IRT to this reach to see if they thought it needed a flow gauge.
The IRT decided that the reach was short enough that it did not need a flow gauge.
In total the amount of credits that are withheld from Pee Dee are 716.7 SMUs. RES will decide if
a Remedial Action Plan is appropriate to address the problems in and above the old pond bottoms
as well as add a flow camera above the pond bottom on Dale 1 and in-between XS 8 and 9 on Dale
2.