20081317 Ver 1_Table 1 2014 performance criteria_20160314

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Table 1. Performance criteria. methods summary. and current status (2014)
Type of Mitigation
Performance Criteria
Documentation Methods
Dimension & Controls
Current Status
28 February — 6 December;
83 percent of wells had a
212.5 to 25 and >12.5 to 75
94 semi -continuous
NOAA WETS data for
hydroperiod >12.5 to 75
percent hydroperiod
monitoring wells (arrays);
normal rainfall; valley
percent of the growing
Riparian wetland hydrology
expected within the
onsite rain gauge; as -built
dimensions as indicated by
season, 5 percent had a
restoration (headwater forest
topographic valley; >_6
cross sections; addition of
LiDAR, cross sections,
marginal hydroperiod (>6-
and bottomland hardwood)
percent hydroperiod
plugs in eastern Windley
comparison to 3 control
12.5 percent of the growing
required for success
perimeter ditch
sites, and agency
season), and one well did not
exhibit a wetland
concurrence
hydroperiod.
A perimeter ditch dug around
wetland in upper Scott Creek
valley prior to PCS ownership
was filled during restoration.
Flow from upper Scott Creek
Semi -continuous
is now delivered directly into
monitoring wells HS16 &
the wooded riparian wetland
HS17 (near the upper limits
in lower Scott Creek instead
of upper Scott Creek) are
of into the agricultural
Increase in wetland
the only wells that are near
28 February — 6 December;
diversion channel dug along
Riparian wetland hydrology
hydroperiod from pre-
the former location of pre-
Belhaven NOAH WETS data
the north edge of the woods.
enhancement
restoration conditions
restoration wells that were
for normal rainfall
The channel was filled as
in existing wetlands;
part of the restoration of Scott
documentation of the other
Creek watershed.
enhancement areas is
Additionally, overland flow
based on site visits and
from the watershed north of
LiDAR data
the wooded riparian wetland
can now enter this wetland
without being diverted away
from the lower Scott Creek
riparian forested wetland by
the old channel.
98% of wells had a
hydroperiod >6% of the
Non -riparian wetland
109 semi -continuous
28 February — 6 December;
growing season, with 94
hydrology restoration
>_6 percent hydroperiod for
monitoring wells (1 well/10
NOAA WETS data for
percent of wells having a
(hardwood flats)
hydric mineral soils
acres); onsite rain gauge
normal rainfall, comparison
hydroperiod >12.5 percent of
to 3 control sites
the growing season, and 1
well did not exhibit a wetland
hydroperiod.

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Table 1.
Type of Mitigation Performance Criteria Documentation Methods I Dimension & Controls Current Status
The hydroperiods at the well
Semi -continuous
28 February — 6 December;
with pre -restoration data
Non -riparian wetland
Increase in wetland monitoring wells
NOAA WETS data for
increased from pre -
hydrology enhancement
hydroperiod from pre- HS2,HS18; onsite rain
normal rainfall, comparison
restoration and the longest
(hardwood flats)
restoration conditions gauge; plugging eastern
to 3 control sites
wetland hydroperiod at HS2
Windley perimeter ditch
(no pre -data) was 27 percent
in 2014.
Survival density for all trees
Survival of 260 planted
Monitoring of planted stems
(and shrub species) after the
Wetland vegetation
stems per acre (using
on 2 percent of the site in
Annual monitoring of plots
2014 sampling event was
restoration
acreage planted) of 5 -year
123 vegetation plots
371 stems per acre (80%
old planted woody stems
survival) for all species
unquestionably alive.
Photos/video of flow
2
conditions (e.g., sediment
Some braided patterns and
deposits, debris flows,
Corps and DWQ April 2007
channel formation have been
Linear feet of credit based
wrack lines, sinuosity,
Information; Calendar year;
seen in some areas of most
Zero to first order stream
on most upstream location
braided features, channel
Belhaven NOAA WETS data
stream valleys. Flowing water
restoration within riparian
of flow documented at least
features); semi -continuous
for normal rainfall; flow
has been seen in the single -
headwater system
twice per year in 3 years out
monitoring well arrays;
confined to times of normal
thread channel and other
of 5
GPS locations; open
rainfall
channels. Video of some flow
c
channel flow monitoring
events is included on a
companion CD to this report.
equipment.
Flowing water has been seen
Photos, GIS data; channel
in the single -thread channel
stability analysis; surveys
on numerous visits and
Two bankfull events in
twice a year along entire
Stream Mitigation Guidelines
recorded by gauges.
separate years during 5
reach; monthly site visits to
2003
Evidence of out of bank
years of monitoring
established points (see
events also has been noted.
preceding row for more
Video of some flow events is
detail)
on a companion CD to this
report.
First or second order stream
restoration
Survival density in the 19
potential riparian buffer areas
80 percent survival of
for all stems after the 2014
planted tree species within
Established vegetation
sampling was 653 stems per
50 feet of stream on each
Plots; plant survival
Stream Mitigation Guidelines
acre (69% survival) for all
side after 5 years (or 260
analysis
2003
species unquestionably alive.
trees per acre- per buffer
Density in the one buffer plot
criteria)
within the single thread
segment was 176 stems per
acre for all alive.

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Type of Mitigation Performance Criteria I Documentation Methods I Dimension & Controls I Current Status
' With elevations ranging from 9 feet above MSL to less than 1 foot, the non -riparian mineral flats at Hell Swamp will have a range of hydroperiods increasing downslope into the riparian
wetlands.
2 Documentation may be for active or past flow conditions; may include other agency- approved structural elements or use of technical equipment not on list.
New consolidated buffer rule
Survival density in the 19
260 woody stems per acre,
Monitoring for planted stem
15A NCAC 02B .0295 was
potential riparian buffer areas
including 4 native species;
survival within 19
adopted on 30 September
the center of the stream
Tar -Pamlico riparian buffer
no single species shall
established 0.17 -acre plots;
2014 and became effective
l
valleys
leys for all stems after the
restoration
exceed 50%; native
additional data from 14 of
24 October 2014; 401
2014 sampling was 653
volunteer stems allowed in
the larger 0.22 -acre plots
certification dated 15
stems per acre for all species
count
within the 100 -foot buffer
January 2009 (DWQ#2008-
unquestionably alive and 345
0868)
stems per acre in the 14
larger riparian plots.
' With elevations ranging from 9 feet above MSL to less than 1 foot, the non -riparian mineral flats at Hell Swamp will have a range of hydroperiods increasing downslope into the riparian
wetlands.
2 Documentation may be for active or past flow conditions; may include other agency- approved structural elements or use of technical equipment not on list.