20190865 Ver 1_Tech Proposal_App B_Data_20190719

APPENDIX B
STREAM & WETLAND DATA
NCSAM Forms
Cross Sections
BEHI & NBS
Soil Boring Logs
Nonstandard Buffer Width Calculations
Laurel Springs Stream Mitigation Site Appendices
Technical Proposal (RFP # 16-007725)

Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
SAM1-UT1
Stream Site Name One Mile - UT 2 Date of Assessment
2/4/19
Stream Category Mb1 Assessor Name/Organization
AXE/WGL
Notes of Field Assessment Form (Y/N)
NO
Presence of regulatory considerations (Y/N)
NO
Additional stream information/supplementary measurements included (Y/N)
YES
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Intermittent
USACE/
NCDWR
Function Class Rating Summary All Streams
Intermittent
(1) Hydrology
LOW
LOW
(2) Baseflow
HIGH
HIGH
(2) Flood Flow
LOW
LOW
(3) Streamside Area Attenuation
MEDIUM
MEDIUM
(4) Floodplain Access
HIGH
HIGH
(4) Wooded Riparian Buffer
LOW
LOW
(4) Microtopography
NA
NA
(3) Stream Stability
LOW
LOW
(4) Channel Stability
LOW
LOW
(4) Sediment Transport
LOW
LOW
(4) Stream Geomorphology
MEDIUM
MEDIUM
(2) Stream/Intertidal Zone Interaction
NA
NA
(2) Longitudinal Tidal Flow
NA
NA
(2) Tidal Marsh Stream Stability
NA
NA
(3) Tidal Marsh Channel Stability
NA
NA
(3) Tidal Marsh Stream Geomorphology
NA
NA
(1) Water Quality
LOW
LOW
(2) Baseflow
HIGH
HIGH
(2) Streamside Area Vegetation
LOW
LOW
(3) Upland Pollutant Filtration
LOW
LOW
(3) Thermoregulation
LOW
LOW
(2) Indicators of Stressors
YES
YES
(2) Aquatic Life Tolerance
LOW
NA
(2) Intertidal Zone Filtration
NA
NA
(1) Habitat
LOW
LOW
(2) In -stream Habitat
LOW
LOW
(3) Baseflow
HIGH
HIGH
(3) Substrate
LOW
LOW
(3) Stream Stability
LOW
LOW
(3) In -stream Habitat
LOW
LOW
(2) Stream -side Habitat
LOW
LOW
(3) Stream -side Habitat
LOW
LOW
(3) Thermoregulation
LOW
LOW
(2) Tidal Marsh In -stream Habitat
NA
NA
(3) Flow Restriction
NA
NA
(3) Tidal Marsh Stream Stability
NA
NA
(4) Tidal Marsh Channel Stability
NA
NA
(4) Tidal Marsh Stream Geomorphology
NA
NA
(3) Tidal Marsh In -stream Habitat
NA
NA
(2) Intertidal Zone
NA
NA
Overall
LOW
LOW

Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name One Mile - Fork Cr Date of Assessment
2/4/19
Stream Category Ma3 Assessor Name/Organization
AXE/WGL
Notes of Field Assessment Form (Y/N)
NO
Presence of regulatory considerations (Y/N)
NO
Additional stream information/supplementary measurements included (Y/N)
YES
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Perennial
USACE/ NCDWR
Function Class Rating Summary All Streams Intermittent
(1) Hydrology
LOW
(2) Baseflow
HIGH
(2) Flood Flow
LOW
(3) Streamside Area Attenuation
LOW
(4) Floodplain Access
LOW
(4) Wooded Riparian Buffer
LOW
(4) Microtopography
LOW
(3) Stream Stability
LOW
(4) Channel Stability
LOW
(4) Sediment Transport
MEDIUM
(4) Stream Geomorphology
LOW
(2) Stream/Intertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
LOW
(2) Baseflow
HIGH
(2) Streamside Area Vegetation
LOW
(3) Upland Pollutant Filtration
LOW
(3) Thermoregulation
LOW
(2) Indicators of Stressors
YES
(2) Aquatic Life Tolerance
HIGH
(2) Intertidal Zone Filtration
NA
(1) Habitat
LOW
(2) In -stream Habitat
LOW
(3) Baseflow
HIGH
(3) Substrate
MEDIUM
(3) Stream Stability
LOW
(3) In -stream Habitat
LOW
(2) Stream -side Habitat
LOW
(3) Stream -side Habitat
LOW
(3) Thermoregulation
LOW
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone
NA
Overall
LOW

Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name One Mile - UT 3 Date of Assessment
2/4/19
Stream Category Mal Assessor Name/Organization AXE/WGL
Notes of Field Assessment Form (Y/N)
NO
Presence of regulatory considerations (Y/N)
NO
Additional stream information/supplementary measurements included (Y/N)
YES
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Perennial
USACE/ NCDWR
Function Class Rating Summary
All Streams Intermittent
(1) Hydrology
MEDIUM
(2) Baseflow
HIGH
(2) Flood Flow
MEDIUM
(3) Streamside Area Attenuation
MEDIUM
(4) Floodplain Access
HIGH
(4) Wooded Riparian Buffer
LOW
(4) Microtopography
LOW
(3) Stream Stability
MEDIUM
(4) Channel Stability
HIGH
(4) Sediment Transport
HIGH
(4) Stream Geomorphology
LOW
(2) Stream/Intertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
LOW
(2) Baseflow
HIGH
(2) Streamside Area Vegetation
LOW
(3) Upland Pollutant Filtration
LOW
(3) Thermoregulation
MEDIUM
(2) Indicators of Stressors
YES
(2) Aquatic Life Tolerance
MEDIUM
(2) Intertidal Zone Filtration
NA
(1) Habitat
LOW
(2) In -stream Habitat
MEDIUM
(3) Baseflow
HIGH
(3) Substrate
HIGH
(3) Stream Stability
MEDIUM
(3) In -stream Habitat
LOW
(2) Stream -side Habitat
LOW
(3) Stream -side Habitat
LOW
(3) Thermoregulation
LOW
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone
NA
Overall
LOW

Draft NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name One Mile - UT 1 Date of Assessment
2/4/19
Stream Category Mal Assessor Name/Organization AXE/WGL
Notes of Field Assessment Form (Y/N)
NO
Presence of regulatory considerations (Y/N)
NO
Additional stream information/supplementary measurements included (Y/N)
YES
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Perennial
USACE/ NCDWR
Function Class Rating Summary
All Streams Intermittent
(1) Hydrology
LOW
(2) Baseflow
MEDIUM
(2) Flood Flow
LOW
(3) Streamside Area Attenuation
LOW
(4) Floodplain Access
LOW
(4) Wooded Riparian Buffer
LOW
(4) Microtopography
LOW
(3) Stream Stability
LOW
(4) Channel Stability
LOW
(4) Sediment Transport
MEDIUM
(4) Stream Geomorphology
LOW
(2) Stream/Intertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
LOW
(2) Baseflow
MEDIUM
(2) Streamside Area Vegetation
LOW
(3) Upland Pollutant Filtration
LOW
(3) Thermoregulation
LOW
(2) Indicators of Stressors
YES
(2) Aquatic Life Tolerance
MEDIUM
(2) Intertidal Zone Filtration
NA
(1) Habitat
LOW
(2) In -stream Habitat
LOW
(3) Baseflow
MEDIUM
(3) Substrate
MEDIUM
(3) Stream Stability
LOW
(3) In -stream Habitat
LOW
(2) Stream -side Habitat
LOW
(3) Stream -side Habitat
LOW
(3) Thermoregulation
LOW
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone
NA
Overall
LOW

One Mile XS Riffle ---
102
101
100
99
4 98 ___
95---
94 0 5 10 15 20 25 30
Width from River Left to Right (ft)
section:
One Mile XS 1
Riff
-
Rif le
description:
height of instrument (ft): ,
omit distance FS FS FS W fpa channel Manning's
notes ot. (ft) (ft) elevation ba
nkfull too of bank (ft) slope (%) "n"
dimensions
21.6
x -section area
1.7
d mean
12.5
width
14.8
wet P
2.9
d max
1.5
h d radi
3.4
bank ht
7.2
w/d ratio
250.0
W flood prone area
20.0
ant ratio
hydraulics
0.0
velocity (ft/sec)
0.0
discharge rate, (Z cfs
0.00
shear stress ((Ibs/ft sq)
0.00
shear velocity (ft/sec)
0.000
unit stream power lbs/ft/sec
0.00
Froude number
0.0
friction factor u/u*
9-0
Ithreshold grain size (mm)
check from channel material
0
measured D84 mm
0.0
relative roughness 0.0 frit. factor
0.000
Manning's n from channel material

100.5
100
99.5
99
c 98.5
5 98
> 97.5
v
w 97
96.5
96
95.5
95
One Mile XS 3 Riffle --
0 5 10 15 20 25
section:
description:
of instrument (ft):
Riffle
Width from River Left to Right (ft)
notes I ot. I (ft) I (ft) I elevation I I bankfull ROD of bank) (ft) I slope M I
dimensions
13.4
x -section area
1.5
d mean
9.0
width
10.7
wet P
2.2
d max
1.3
h d radi
3.0
bank ht
6.1
w/d ratio
250.0
W flood prone area
27.7
ant ratio
hydraulics
0.0
velocity (ft/sec)
0.0
discharge rate, (Z cfs
0.00
shear stress ((Ibs/ft sq)
0.00
shear velocity (fUsec)
0.000
unit stream power lbs/ft/sec
0.00
Froude number
0.0
friction factor u/u*
0-0
Ithreshold grain size (mm)
check from channel material
0measured
D84 mm
0.0
relative roughness 1 0.0 1 fric. factor
0.000
1 Manning's in from channel material

Site
One Mile Steam Mitigation Site
Stream
Fork Creek
Bank Length
4134
Observers
WGL
Date
4 -Feb -19
Station
Bank
BEHI
NBS
Erosion Rate
Length
Bank Height
Erosion
1 445
right
Low
Low
0
445
3
0.0
2 585
right
Mod
Mod
0.05
140
2
14.0
3 660
right
High
High
0.2
75
3
45.0
4 720
right
Low
Low
0
60
3
0.0
5 805
right
High
High
0.2
85
3
51.0
6 960
right
Low
Low
0
155
4
0.0
7 1050
right
High
High
0.2
90
3
54.0
8 1710
right
Extreme
High
4
660
4
10560.0
9 1780
right
Low
Low
0
70
3
0.0
10 1990
right
High
High
0.2
210
3
126.0
11 2100
right
Mod
Mod
0.05
110
3
16.5
12
13 445
left
Low
Low
0
445
3
0.0
14 560
left
Mod
Mod
0.05
115
2
11.5
15 594
left
High
High
0.2
34
3
20.4
16 649
left
Low
Low
0
55
2
0.0
17 704
left
High
High
0.2
55
3
33.0
18 984
left
Mod
Mod
0.05
280
3
42.0
19 1644
left
Low
Low
0
660
3
0.0
20 1714
left
Low
Low
0
70
3
0.0
21 1924
left
High
High
0.2
210
3
126.0
22 2034
left
Mod
Mod
0.05
110
3
16.5
23
24
Sum erosion sub -totals for each BEHI/NBS
Total Erosion (ft3/yr)
11115.9
Divide total erosion (ft3) by 27
Total Erosion
(yd/yr)
411.7
Multiply Total
erosion (yard3) by 1.3
Total Erosion
(tons/yr)
535.2
Erosion per unit length
Total Erosion (Tons/yr/ft)
0.129

Site One Mile Steam Mitigation Site
Stream UT 1
Bank Length 2728
Observers WGL
Date 4 -Feb -19
Station Bank BEHI
NBS
Erosion Rate
Length Bank Height
Erosion
1 454 right High
Low
0.1
454 4
181.6
2 924 right High
High
0.2
470 3
282.0
3 1364 right Mod
Mod
0.05
440 3
66.0
4
5 454 left High
Low
0.1
454 4
181.6
6 924 left High
High
0.2
470 3
282.0
7 1364 left Mod
Mod
0.05
440 3
66.0
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Sum erosion sub -totals for each BEHI/NBS
Total Erosion (ft3/yr)
1059.2
Divide total erosion (ft3) by 27
Total Erosion (yd/yr)
39.2
Multiply Total erosion (yard3) by 1.3
Total Erosion (tons/yr)
51.0
Erosion per unit length
Total Erosion (Tons/yr/ft)
0.019

Site One Mile Steam Mitigation Site
Stream UT 2
Bank Length 1540
Observers WGL
Date 4 -Feb -19
Station Bank BEHI
NBS
Erosion Rate
Length Bank Height
Erosion
1 75 right Low
Low
0
75 0.5
0.0
2 145 right Low
Low
0
145 0.5
0.0
3 75 right Mod
Mod
0.05
75 1
3.8
4 475 right Low
Low
0
475 2
0.0
5
6 75 left Low
Low
0
75 0.5
0.0
7 145 left Low
Low
0
145 0.5
0.0
8 75 left Mod
Mod
0.05
75 1
3.8
9 475 left Low
Low
0
475 2
0.0
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Sum erosion sub -totals for each BEHI/NBS
Total Erosion (ft3/yr)
7.5
Divide total erosion (ft3) by 27
Total Erosion (yd/yr)
0.3
Multiply Total erosion (yard3) by 1.3
Total Erosion (tons/yr)
0.4
Erosion per unit length
Total Erosion (Tons/yr/ft)
0.000

Site One Mile Steam Mitigation Site
Stream UT 3
Bank Length 1800
Observers WGL
Date 4 -Feb -19
Station Bank BEHI
NBS
Erosion Rate
Length Bank Height
Erosion
1 75 left Mod
Low
0.02
75 1.5
2.3
2 190 left Low
Low
0
115 0.5
0.0
3 310 left Mod
Mod
0.05
120 1
6.0
4 900 left Low
Low
0
590 1
0.0
5
6 75 right Mod
Low
0.02
75 1.5
2.3
7 190 right Low
Low
0
115 0.5
0.0
8 310 right Mod
Mod
0.05
120 1
6.0
9 900 right Low
Low
0
590 1
0.0
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Sum erosion sub -totals for each BEHI/NBS
Total Erosion (ft3/yr)
16.5
Divide total erosion (ft3) by 27
Total Erosion (yd/yr)
0.6
Multiply Total erosion (yard3) by 1.3
Total Erosion (tons/yr)
0.8
Erosion per unit length
Total Erosion (Tons/yr/ft)
0.000

Site One Mile Steam Mitigation Site
Stream UT 4
Bank Length 1330
Observers WGL
Date 4 -Feb -19
Station Bank BEHI NBS
Erosion Rate Length Bank Height
Erosion
1 665 left Low Low
0 665 1
0.0
2
3 665 right Low Low
0 665 1
0.0
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Sum erosion sub -totals for each BEHI/NBS
Total Erosion (ft3/yr)
0.0
Divide total erosion (ft3) by 27
Total Erosion (yd/yr)
0.0
Multiply Total erosion (yard3) by 1.3
Total Erosion (tons/yr)
0.0
Erosion per unit length
Total Erosion (Tons/yr/ft)
0.000

BEHIMBS Summary
Stream Reach
Erosion Rate
(tons/year)
Fork Cr
535.2
UT 1
51.0
UT 2
0.4
UT 3
0.8
UT 4
0.0
Total
587.4

AXIOM ENVIRONMENTAL, INC
218 Snow Avenue
Raleigh, North Carolina 27603
919-215-1693
SOIL BORING LOG
Date:
2/4/2019
Project/Site:
One Mile Mitigation Site
County, State:
Avery County, NC
Sampling Point/
10 YR 4/2
Coordinates:
Soil Profile A (35.992845, -81.982454)
Investigator:
W. Grant Lewis
Soil Series:
Nikwasi
Axiom Environmental, Inc.
Notes: Location is shown on
Figure 4.
Depth (inches)
Matrix
Color
%
Mottling
Color
%
Texture
0-2
10 YR 4/2
100
silt loam
2-13
10 YR 4/2
90
10 YR 6/1
5
fine sandy loam
10 YR 5/6
5
13-15
10 YR 4/2
90
10 YR 5/1
5
sandy loam
10 YR 5/6
5
15+
10 YR 3/2
90
10 YR 5/3
10
fine sandy loam
North Carolina Licensed Soil Scientist
Number: 1233
Signature: w
Name/Print: W. Grant Lewis

AXIOM ENVIRONMENTAL, INC
218 Snow Avenue
Raleigh, North Carolina 27603
919-215-1693
SOIL BORING LOG
Date:
2/4/2019
Project/Site:
One Mile Mitigation Site
County, State:
Avery County, NC
Sampling Point/
10 YR 4/2
Coordinates:
Soil Profile B (35.994138, -81.982163)
Investigator:
W. Grant Lewis
Soil Series:
Nikwasi
Axiom Environmental, Inc.
Notes: Location is shown on
Figure 4.
Depth (inches)
Matrix
Color
%
Mottling
Color
%
Texture
0-4
10 YR 4/2
95
10 YR 5/1
5
silt loam
4-12
10 YR 5/1
95
10 YR 5/6
5
sandy loam
12-16
10 YR 5/1
95
10 YR 5/6
5
loam
16+
10 YR 3/1
90
10 YR 5/6
10
sandy loam
North Carolina Licensed Soil Scientist
Number: 1233
Signature: w
Name/Print: W. Grant Lewis

AXIOM ENVIRONMENTAL, INC
218 Snow Avenue
Raleigh, North Carolina 27603
919-215-1693
SOIL BORING LOG
Date:
2/4/2019
Project/Site:
One Mile Mitigation Site
County, State:
Avery County, NC
Sampling Point/
10 YR 5/6
Coordinates:
Soil Profile C (35.995745, -81.981805)
Investigator:
W. Grant Lewis
Soil Series:
Nikwasi
Axiom Environmental, Inc.
Notes: Location is shown on
Figure 4.
Depth (inches)
Matrix
Color %
Mottling
Color
%
Texture
0-3
10 YR 4/2 95
10 YR 5/6
5
loam
3-18
10 YR 4/1 90
10 YR 6/1
5
sandy loam
10 YR 5/6
5
18+
10 YR 3/1 95
10 YR 5/6
5
loam
North Carolina Licensed Soil Scientist
Number: 1233
Signature: w
Name/Print: W. Grant Lewis

AXIOM ENVIRONMENTAL, INC
218 Snow Avenue
Raleigh, North Carolina 27603
919-215-1693
SOIL BORING LOG
Date:
2/4/2019
Project/Site:
One Mile Mitigation Site
County, State:
Avery County, NC
Sampling Point/
90
Coordinates:
Soil Profile D (35.997221, -81.980564)
Investigator:
W. Grant Lewis
Soil Series:
Nikwasi
Axiom Environmental, Inc.
Notes: Location is shown on
Figure 4.
Depth (inches)
Matrix
Color
%
Mottling
Color %
Texture
0-4
10 YR 4/2
90
10 YR 4/6 10
silt loam
4-16
10 YR 3/1
95
10 YR 4/6 5
sandy loam
16+
10 YR 3/1
100
sand
North Carolina Licensed Soil Scientist
Number: 1233
Signature: w
Name/Print: W. Grant Lewis

Channel Type
Length
Ratio
Credit
Restoration
2,974
1
2,974
Enhancement 1
353
2
235
Enhancement II
402
3
161
Enhancement II
183
5
37
Preservation
1 1,1651
10
117
5,0771
3,523

Wilmington District Stream Buffer Credit Calculator
Site Name: Laurel Springs Mitigation Site
USACE Action ID:
NCDWR Project Number:
Sponsor: Restoration Systems, LLC
County: Avery
Minimum Required Buffer Width': 30
Mitigation Ratio Creditable Stream
Mitigation Type Multiplier 2 Length 3 Baseline Stream Credit
Restoration (1:1) 1 2974 2974.00
Enhancement 1 (1.5:1) 1.5 353 235.33
Enhancement 11(2.5:1) 2.5 402 160.80
Preservation (5:1) 5 183 36.60
Other (7.5:1) 7.5
Other (10:1) 10 1165 116.50
Custom Ratio 1
Custom Ratio 2
Custom Ratio 3
Custom Ratio 4
Custom Ratio 5
Totals 5077.00 3523.23
Buffer Width Zone (feet from Ordinary High Water Mark)
Buffer Zones less than 15 feet >15 to 20 feet >20 to 25 feet >25 to 30 feet >30 to 50 feet >50 to 75 feet >75 to 100 feet >100 to 125 feet
>125 to 150 feet
Max Possible Buffer (square feet)° 152310 50770 50770 50770 203080 253850 253850 253850
253850
Ideal Buffer (square feet)s 146309.18 48962.44 49054 49200.92 196873.96 247918.33 252879.69 252269.57
252694.84
Actual Buffer (square feet)6 141587.8 45801.06 45093.1 44415.21 151775.22 167868.17 161323.7 148099.1
119273.41
Zone Multiplier 50% 20% 15% 15% 9% 7% 6% 5%
3%
Buffer Credit Equivalent 1761.62 704.65 528.49 528.49 317.09 246.63 211.39 176.16
105.70
Percent of Ideal Buffer 97% 94% 92% 90% 77% 68% 64% 59%
47%
Credit Adjustment -56.85 -45.50 -42.67 -51.41 244.45 166.99 134.86 103.42
49.89
Credit Loss in Required Credit Gain for Net Change in
Total Baseline Credit Total Credit
Buffer Additional Buffer Credit from Buffers
3523.23 -196.42
699.61 503.19 4026.42
'Minimum standard buffer width measured from the top of bank (50 feet in piedmont and coastal plain counties or 30 feet in mountain counties)
2Use the Custom Ratio fields to enter non -standard ratios, which are equal to the number of feet in the feet-to-credit mitigation ratio (e.g., for a perservation ratio of 8 feet to 1 credit, the multiplier would be 8).
3Equal to the number of feet of stream in each Mitigation Type. If stream reaches are not creditable, they should be excluded from this measurement, even if they fall within the easement.
4This amount is the maximum buffer area possible based on the linear footage of stream length if channel were perfectly straight with full buffer width. This number is not used in calculations, but is provided as a reference.
5Maximum potential size (in square feet) of each buffer zone measured around all creditable stream reaches, calculated using GIS, including areas outside of the easement. The inner zone (0-15') should be measured from the top of the OHWM
reaches within the easement should be removed prior to calculating this area wtih GIS.
or the edge of the average stream width if OHWM is not known. Non-creditable stream
6Square feet in each buffer zone, as measured by GIS, excluding non-forested areas, all other credit type (e.g., wetland, nutrient offset, buffer), easement exceptions, open water, areas failing to meet the vegetation performance standard, etc. Additional credit is given to 150 feet in buffer width, so areas within the easement that are
more than 150 feet from creditable streams should not be included in this measurement. Non-creditable stream reaches within the easement should be removed prior to calculating this area wtih GIS.