20080868 Ver 2_Appendix G - Vegetation_20190628

APPENDIX G
2018 Vegetation Photographs PCS Creeks Study
2018 Vegetation Data from Six Monitored Creeks
Errata pages for HWW2 2009-2017
(Data only on CD/DVD)

All photos have a 10-foot pole marked in 1-foot increments in the center of the photo, 25
feet from the well (although vegetation may obscure the pole).
Jacks Creek vegetation transect JW2; view from well upstream to plot 10. PVC pole in
foreground marks transect centerline and photo pole is at the next centerline pole. 4
September 2018.
Jacks Creek vegetation transect JW2; view from end of transect downstream to plot 1.
PVC poles with orange flagging mark transect centerline and poles with pink flagging are
the shrub plot outer corners. 4 September 2018.
G - 1

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Imp
r
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mow
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Wyk It
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r? �-clat�, pp
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.5
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sk
r "��ppp,,��; � � .� :. /M'�A .dam -,I •'lrflf; 4 ,
tp ,•,i �►�. Ids
fa
N i r
ki,1
d

Jacks Creek vegetation transect JW7; view from well downstream to plot 10. PVC pole in
middle with orange flagging marks transect centerline and photo pole is at the next
centerline pole. PVC pole with pink flagging in middle, on far right is a shrub plot outer
corner. 4 September 2018.
Jacks Creek vegetation transect JW7; view from end of transect upstream to plot 1. PVC
pole with orange flagging marks transect centerline. 4 September 2018.
G - 4

!C ti � L�• � �` Wit, ,t � 1
im
4 �
., 000,
i
Ali
J f,
•� ;� � ��, _� �,!;�',1 , ' �•,� � �! � . �•t� � � 1,

Drinkwater Creek vegetation transect DWW1C; view from well upstream to plot 10. PVC
pole in foreground with orange flagging marks transect centerline and photo pole is at the
next centerline pole. 21 August 2018.
Drinkwater Creek vegetation transect DWW1 C; view from end of transect downstream to
plot 1. PVC poles with orange flagging mark transect centerline and poles with pink
flagging are the shrub plot outside corners. 21 August 2018.
G-6

' Nam;
Jacobs Creek vegetation transect JCBW1; view downstream. PVC pole in foreground with
orange flagging marks transect centerline. 21 August 2018.
Jacobs Creek vegetation transect JCBW1; view upstream. 21 August 2018.
G - 7

yt�� � i 1 � _ l �'S � •� � f
WF!.
11

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*
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Y
110
r� a
41
yam.
y Jill.
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W X.
r � l

r'/�rr`� ,u�a �``, fir+ � •'v+ � � '� "'\
r�
Y Y� C f i 5' I�/ �•`
_ 1 �

-01
A. � _v
-R* �� Atli
or

Huddles Cut vegetation transect HMW5; view downstream to plot 10 from the beginning of
transect. 30 August 2018.
Huddles Cut vegetation transect HMW5; view upstream to plot 1 from the end of transect.
PVC pole with orange flagging in the center of the photo marks the transect centerline. 30
August 2018.
G-14

to
I ✓3 i. 'L � J i Y �. J `
y r
tirr

IT
• ��'7 r�.. a ,�

IT,
fl TTI

IA
dr
oil
oq
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sV
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s � �
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4 �
11 f �y r
r `60

Huddles Cut west prong vegetation transect HWW2; view from transect end downstream to
plot 1. 29 August 2018.
Huddles Cut west prong vegetation transect HWW2; view upstream to plot 4. 29 August
2018.
G-20

tp
������ � ��. �'�..; ��t<11'��� 1 � l ', � 'gyp, � �• i
l

Huddles Cut west prong vegetation transect HWW8; view downstream to plot 1. Pole with
orange flagging in the foreground marks transect centerline. 30 August 2018.
Huddles Cut west prong vegetation transect HWW8; view upstream to plot 10. PVC pole
with orange flagging marks transect centerline. 30 August 2018.
G-23

ndix G-1. Drinkwater Well 1C Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Arundinaria gigantea
36.50(18.81-54.19)
12.30(7.21-17.39)
0.90
0.98
Microstegium vimineum
4.10(0.59-7.61)
7.30(2.09-12.51)
0.70
0.34
Toxicodendron radicans
5.40(0.00-14.14)
3.70(0.50-6.90)
0.70
0.26
Woodwardia aerolata
4.80(0.00-13.83)
2.00(0.00-5.46)
0.20
0.15
Bignonia capreolata
2.10(0.00-5.48)
2.50(0.00-5.69)
0.30
0.13
Glyceria striata
4.50(0.00-13.49)
0.90(0.00-2.70)
0.20
0.12
Quercus michauxii
1.10(0.08-2.12)
0.90(0.19-1.61)
0.60
0.11
Smilax rotundifolia
0.58(0.00-1.25)
1.10(0.06-2.14)
0.50
0.10
Berchemia scandens
0.45(0.00-0.94)
0.70(0.00-1.46)
0.40
0.07
Parthenocissus quinquefolia
0.30(0.00-0.74)
0.50(0.00-1.01)
0.40
0.07
Campsis radicans
0.40(0.00-0.90)
0.70(0.00-1.82)
0.30
0.06
Dioscorea villosa
0.65(0.00-1.77)
0.50(0.00-1.20)
0.30
0.06
Liquidambar styraciflua
0.30(0.00-0.65)
0.50(0.00-1.20)
0.30
0.05
Lespedeza cuneata
0.08(0.00-0.16)
0.30(0.00-0.65)
0.30
0.05
Smilax bona-nox
0.20(0.00-0.50)
0.50(0.00-1.27)
0.20
0.04
Acer rubrum
0.20(0.00-0.55)
0.50(0.00-1.41)
0.20
0.04
Mitchella repens
0.13(0.00-0.32)
0.50(0.00-1.27)
0.20
0.04
Rubus argutus
1.20(0.00-3.91)
0.30(0.00-0.98)
0.10
0.04
Euonymus americanus
0.15(0.00-0.39)
0.30(0.00-0.78)
0.20
0.03
Athyrium asplenioides
0.90(0.00-2.94)
0.30(0.00-0.98)
0.10
0.03
Vitis rotundifolia
0.15(0.00-0.39)
0.20(0.00-0.50)
0.20
0.03
Arisaema triphyllum
0.50(0.00-1.63)
0.40(0.00-1.30)
0.10
0.03
Boehmeria cylindrica
0.40(0.00-1.30)
0.20(0.00-0.65)
0.10
0.02
Vaccinium corymbosum
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
0.02
Viola sororia
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.02
Glechoma hederacea
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.02
Celtis laevigata
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.02
Sanicula canadensis
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.02
Pinus seedling
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.02
Chasmanthium laxum
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.02
Liriodendron tulipifera
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.02
ndix G-2. Drinkwater Well 1C Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Arundinaria gigantea
46.00(31.71-60.29)
48.70(32.50-67.46)
1.00
1.77
Smilax rotundifolia
1.25(0.00-2.53)
4.80(0.05-10.31)
0.40
0.21
Liquidambar styraciflua
8.50(0.00-21.35)
0.30(0.00-0.86)
0.20
0.18
Vaccinium corymbosum
3.50(0.00-8.13)
0.40(0.03-0.83)
0.40
0.16
Acer rubrum
6.00(0.00-19.57)
0.10(0.00-0.36)
0.10
0.11
Vitis rotundifolia
0.50(0.00-1.11)
0.70(0.00-1.66)
0.30
0.10
Morella cerifera
2.00(0.00-5.02)
0.20(0.00-0.55)
0.20
0.09
Quercus phellos
0.80(0.00-2.05)
0.20(0.00-0.55)
0.20
0.07
Smilax bona-nox
0.15(0.00-0.39)
0.40(0.00-1.20)
0.20
0.06
Berchemia scandens
0.20(0.00-0.50)
0.30(0.00-0.86)
0.20
0.06
Fraxinus profunda
2.00(0.00-6.52)
0.20(0.00-0.72)
0.10
0.06
Fraxinus pennsylvanica
0.50(0.00-1.63)
0.10(0.00-0.36)
0.10
0.04
Quercus michauxii
0.10(0.00-0.33)
0.10(0.00-0.36)
0.10
0.03
Campsis radicans
0.05(0.00-0.16)
0.10(0.00-0.36)
0.10
0.03
Parthenocissus quinquefolia
0.05(0.00-0.16)
0.10(0.00-0.36)
0.10
0.03
' Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value can theoretically can range
from 0.00 to 3.00
Appendix G-3. Huddles Main Well HMW2 Herbs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) I confidence interval) I occurrence value'
Lemna sp.
91.45(88.01-94.89
Typha latifolia
11.70(0.00-25.42)
Typha angustifolia
12.00(0.00-26.62)
Cyperus odoratus
2.00(0.57-3.43)
Eupatorium capillifolium
0.60(0.00-1.50)
Echinochloa walteri
2.20(0.00-6.70)
9,145.00(8,801.32-9,488.68)
1.00
2.00
3.90(0.00-8.30)
0.60
0.25
3.90(0.00-7.97)
0.40
0.20
1.50(0.32-2.68)
0.60
0.17
0.60(0.00-1.50)
0.30
0.08
1.70(0.00-4.31)
0.20
0.07
G-24

Phragmites australis
Hydrocotyle verticillata
Edgeron annuus
Polygonum punctatum
Pluchea odorata
Toxicodendron radicans
2.20(0.00-6.70)
1.70(0.00-5.07)
0.50(0.00-1.27)
3.00(0.00-7.83)
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10(0.00-0.33)
0.20(0.00-0.65)
0.20
0.20
0.10
0.10
0.10
0.10
0.07
0.06
0.03
0.03
0.03
0.03
Appendix G-4. Huddles Main Well HMW2 Shrubs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) I confidence interval) I occurrence value
Baccharis halimifolia
8.00(1.21-14.79)
0.90(0.19-1.61)
0.60
1.75
Smilax rotundifolia
0.60(0.00-1.50)
0.40(0.00-1.09)
0.20
0.44
Toxicodendron radicans
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.18
Berchemia scandens
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.16
Smilax bona-nox
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.16
Acer rubrum
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.16
Ulmus americana
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.14
ndix G-5. Huddles Main Well HMW5 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
valuea
Lemna sp.
84.75(76.49-93.01)
7,575.00(5,767.74-9,382.26)
1.00
1.94
Typha angustifolia
27.40(0.00-57.73)
15.70(0.00-33.63)
0.50
0.37
Cyperus odoratus
14.50(0.00-33.91)
3.50(0.00-8.28)
0.30
0.21
Hydrocotyle verticillata
4.00(0.00-9.79)
4.70(0.00-10.68)
0.30
0.13
Toxicodendron radicans
2.90(0.00-8.53)
1.30(0.00-3.32)
0.20
0.09
Polygonum punctatum
3.00(0.00-8.64)
0.80(0.00-2.05)
0.20
0.09
Typha latifolia
3.00(0.00-9.79)
1.00(0.00-3.26)
0.10
0.06
Smilax rotundifolia
0.50(0.00-1.63)
0.20(0.00-0.65)
0.10
0.04
Rubus argutus
0.50(0.00-1.63)
0.20(0.00-0.65)
0.10
0.04
Baccharis halimifolia
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.04
Appendix G-6. Huddles Main Well HMW5 Shrubs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
valuea
Toxicodendron radicans
3.10(1.12-5.08)
1.50(0.18-2.82)
0.70
1.16
Morella cerifera
5.30(0.00-11.51)
0.50(0.00-1.01)
0.40
0.80
Baccharis halimifolia
2.00(0.00-6.52)
0.20(0.00-0.65)
0.10
0.28
Rubus argutus
0.80(0.00-2.05)
0.20(0.00-0.50)
0.20
0.25
Ulmus americana
1.50(0.00-4.89)
0.10(0.00-0.33)
0.10
0.20
Smilax rotundifolia
0.50(0.00-1.63)
0.30(0.00-0.98)
0.10
0.20
Parthenocissus auinauefolia
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.12
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value can theoretically can range
from 0.00 to 3.00
Appendix G-7. Huddles Main Well HMW6 Herbs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) I confidence interval) I occurrence valuea
Lemna sp.
86.45(64.48-108.42)
8,645.00(6,448.38-10,841.62)
0.90
2.13
Cyperus odoratus
6.45(0.00-15.15)
2.90(0.41-5.39)
0.70
0.32
Typha angustifolia
7.50(0.00-19.26)
3.90(0.00-9.76)
0.30
0.18
Bacopa monnieri
7.00(0.00-22.84)
20.00(0.00-65.24)
0.10
0.10
Polygonum densiflorum
0.40(0.00-1.09)
0.60(0.00-1.73)
0.20
0.08
Toxicodendron radicans
0.35(0.00-1.03)
0.40(0.00-1.09)
0.20
0.08
Polygonum punctatum
0.30(0.00-0.98)
0.30(0.00-0.98)
0.10
0.04
Morella cerifera
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.04
Baccharis halimifolia
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.04
Appendix G-8. Huddles Main Well HMW6 Shrubs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
valuea
Toxicodendron radicans
7.10(3.10-11.10)
1.20(0.90-1.50)
1.00
0.99
Baccharis halimifolia
8.20(3.94-12.46)
1.20(0.64-1.76)
0.80
0.95
Morella cerifera
10.20(1.89-18.51)
0.80(0.24-1.36)
0.60
0.84
G-25

Ilex opaca 0.60(0.00-1.96) 0.20(0.00-0.65) 0.10 0.12
Persea palustris 1.00(0.00-3.26) 0.10(0.00-0.33) 0.10 0.10
Appendix G-9. Huddles Main Well HMW8 Herbs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) I confidence interval) I occurrence value
Lemna sp.
16./5(U.UU-4/.U(i)
1,61b.UU(U.UU-4,/Ub.9/)
U.2U
1.26
Phragmites australis
35.00(1.07-68.93)
17.50(0.53-34.47)
0.40
0.57
Polygonum punctatum
11.20(1.42-20.98)
5.50(0.62-10.38)
0.80
0.39
Toxicodendron radicans
2.70(0.00-7.20)
0.40(0.00-0.90)
0.30
0.13
Osmunda regalis
6.00(0.00-19.57)
2.00(0.00-6.52)
0.10
0.11
Amaranthus cannabinus
2.60(0.00-7.18)
0.50(0.00-1.27)
0.20
0.10
Baccharis halimifolia
0.33(0.00-0.80)
0.30(0.00-0.65)
0.30
0.10
Samolus valerandi spp. parviflorus
0.53(0.00-1.65)
3.10(0.00-9.87)
0.20
0.07
Typha angustifolia
2.50(0.00-8.16)
2.50(0.00-8.16)
0.10
0.06
Solidago sempervirens var. mexicana
0.30(0.00-0.98)
1.10(0.00-3.59)
0.10
0.04
Morella cerifera
0.10(0.00-0.33)
0.30(0.00-0.98)
0.10
0.03
Symphyotrichum subulatum
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.03
Eupatorium serotinum
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.03
Echinochloa walteri
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Iva frutescens
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Appendix G-10. Huddles Main Well HMW8 Shrubs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) I confidence interval) I occurrence value
Iva frutescens
12.00(5.26-18.74)
2.10(0.91-3.29)
0.90
24.19
Baccharis halimifolia
13.30(1.28-25.32)
2.10(0.30-3.90)
0.70
23.31
Toxicodendron radicans
11.70(0.59-22.81)
1.10(0.87-1.33)
1.00
20.34
Morella cerifera
12.00(0.79-23.21)
1.10(0.18-2.02)
0.50
16.35
Persea palustris
3.00(0.00-7.83)
0.30(0.00-0.78)
0.20
4.83
Rubus argutus
0.30(0.00-0.78)
0.20(0.00-0.50)
0.20
2.75
Campsis radicans
1.00(0.00-3.26)
0.10(0.00-0.33)
0.10
1.89
Rosa palustris
0.80(0.00-2.61)
0.10(0.00-0.33)
0.10
1.77
Berchemia scandens
0.70(0.00-2.28)
0.10(0.00-0.33)
0.10
1.71
Saba/ minor
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
1.52
Ulmus americana
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
1.34
Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
ndix G-11. Huddles Main Well HMW9 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
valuea
Lemna sp.
65.55(33.03-98.07)
15,330.00(0.00-36,222.96)
0.70
1.95
Polygonum punctatum
14.10(0.00-30.63)
4.40(0.00-8.93)
0.70
0.37
Typha angustifolia
3.40(0.00-8.99)
2.50(0.00-6.96)
0.30
0.13
Cyperus odoratus
1.10(0.01-2.19)
0.70(0.02-1.38)
0.40
0.13
Toxicodendron radicans
1.20(0.00-3.46)
0.50(0.00-1.27)
0.20
0.07
Polygonum densiflorum
0.15(0.00-0.39)
1.10(0.00-3.35)
0.20
0.06
Baccharis halimifolia
0.30(0.00-0.78)
0.50(0.00-1.27)
0.20
0.06
Symphyotrichum subulatum
0.40(0.00-1.09)
0.20(0.00-0.50)
0.20
0.06
Samolus valerandi spp. parviflorus
0.80(0.00-2.61)
0.80(0.00-2.61)
0.10
0.04
Amanranthus cannabinus
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
0.03
Echinochloa walteri
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.03
Pluchea odorata
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Eupatorium capillifolium
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
Appendix G-12. Huddles Main Well HMW9 Shrubs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
valuea
Iva frutescens
12.80(5.95-19.65)
2.60(1.33-3.87)
0.90
1.10
Baccharis halimifolia
7.80(1.62-13.98)
1.30(0.47-2.13)
0.70
0.68
Morella cerifera
10.50(0.00-21.22)
0.90(0.00-1.82)
0.40
0.56
Toxicodendron radicans
5.20(0.00-10.96)
0.80(0.14-1.46)
0.40
0.41
Quercus laurifolia
2.50(0.00-8.16)
0.10(0.00-0.33)
0.10
0.12
Persea borbonia
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.07
G-26

Ulmus americana 0.50(0.00-1.63) 0.10(0.00-0.33) 0.10 0.07
)endix G-13. Huddles Main Well HMW10 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value
Lemna sp.
86.90(64.96-108.84)
7,790.00(5,029.88-10,550.12)
0.90
2.13
Cyperus odoratus
9.30(0.00-23.69)
2.10(0.00-5.16)
0.30
0.20
Typha angustifolia
6.20(0.00-19.73)
3.00(0.00-8.64)
0.20
0.14
Polygonum punctatum
1.75(0.00-5.11)
1.60(0.00-3.48)
0.30
0.14
Symphyotrichum subulatum
4.10(0.00-10.47)
1.80(0.00-5.19)
0.20
0.12
Hydrocotyle verticillata
1.60(0.00-4.98)
16.00(0.00-49.76)
0.20
0.10
Echinochloa walteri
1.50(0.00-4.89)
0.50(0.00-1.63)
0.10
0.05
Toxicodendron radicans
0.70(0.00-2.28)
0.10(0.00-0.33)
0.10
0.05
Samolus valerandi spp. parviflorus
0.50(0.00-1.63)
1.00(0.00-3.26)
0.10
0.04
Polygonum densiflorum
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.04
ndix G-14. Huddles Main Well HMW10 Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value
Baccharis halimifolia
9.30(0.00-20.16)
1.20(0.00-2.41)
0.50
0.79
Morella cerifera
10.50(1.20-19.80)
0.70(0.02-1.38)
0.50
0.72
Toxicodendron radicans
2.40(0.03-4.77)
0.60(0.23-0.97)
0.60
0.45
Arundinaria gigantea
0.80(0.00-2.61)
1.00(0.00-3.26)
0.10
0.28
Smilax rotundifolia
0.50(0.00-1.20)
0.30(0.00-0.65)
0.30
0.20
Vaccinium corymbosum
1.00(0.00-3.26)
0.20(0.00-0.65)
0.10
0.12
Persea borbonia
1.50(0.00-4.89)
0.10(0.00-0.33)
0.10
0.11
Smilax bona-nox
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.09
Quercus laurifolia
0.70(0.00-2.28)
0.10(0.00-0.33)
0.10
0.09
Rosa palustris
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.08
Ilex opaca
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.08
Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
3endix G-15. Huddles Main Well HMW12 Herbs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
valuea
Lemna sp.
87.80(81.48-94.12)
8,780.00(8,148.16-9,411.84)
1.00
2.08
Typha latifolia
6.60(0.08-13.12)
7.30(1.18-13.42)
0.60
0.19
Hydrocotyle verticillata
1.45(0.30-2.60)
11.70(2.16-21.24)
0.70
0.16
Scutellaria lateriflora
1.35(0.00-3.55)
1.20(0.00-2.74)
0.50
0.11
Cyperusodoratus
0.45(0.00-0.91)
1.00(0.11-1.89)
0.50
0.10
Symphyotrichum subulatum
0.25(0.00-0.50)
0.80(0.00-1.91)
0.40
0.08
Phragmites australis
0.40(0.00-1.07)
0.90(0.00-2.27)
0.30
0.06
Eupatorium capillifolium
0.15(0.00-0.39)
0.40(0.00-1.09)
0.20
0.04
Echinochloa walteri
0.15(0.00-0.39)
0.20(0.00-0.50)
0.20
0.04
Bidens frondosa
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
0.02
Osmunda regalis
0.10(0.00-0.33)
0.30(0.00-0.98)
0.10
0.02
Toxicodendron radicans
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.02
Galium tinctorium
0.05(0.00-0.16)
0.20(0.00-0.65)
0.10
0.02
Acer rubrum
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.02
Morella cerifera
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.02
3endix G-16. Huddles Main Well HMW12 Shrubs 2018
Average percent cover
(Average number of stems (95%I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
valuea
Morella cerifera
12.00(0.00-24.97)
1.30(0.00-2.61)
0.50
1.01
Baccharis halimifolia
4.20(0.00-9.41)
0.40(0.03-0.77)
0.40
0.45
Ulmus americana
5.00(0.00-14.08)
0.50(0.00-1.27)
0.20
0.41
Smilax rotundifolia
0.60(0.00-1.37)
0.80(0.00-2.14)
0.20
0.32
Quercus laurifolia
3.00(0.00-9.79)
0.20(0.00-0.65)
0.10
0.21
Toxicodendron radicans
0.80(0.00-1.96)
0.30(0.00-0.65)
0.20
0.20
Parthensocissus quinquefolia
0.20(0.00-0.50)
0.20(0.00-0.50)
0.20
0.16
Saba/ minor
1.50(0.00-4.89)
0.20(0.00-0.65)
0.10
0.15
Rubus argutus
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.08
G-27

ndix G-17. Huddles West Well HWW2 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Phragmites australis
71.00(0.00-143.63)
29.25(0.00-59.81)
1.00
2.37
Toxicodendron radicans
2.25(0.00-6.43)
2.75(0.00-8.76)
0.50
0.37
Morelia cerifera
0.25(0.00-1.05)
0.25(0.00-1.05)
0.25
0.14
Parthenocissus quinquefolia
0.06(0.00-0.26)
0.25(0.00-1.05)
0.25
0.13
ndix G-18. Huddles West Well HWW2 Shrubs 2018
Average percent cover I Average number of stems (95% I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence value'
Baccharis halimifolia
18.75(14.77-22.73)
3.00(0.75-5.25)
1.00
0.76
Morelia cerifera
17.50(0.00-42.23)
1.00(0.00-2.30)
0.75
0.52
Berchemia scandens
7.00(0.00-21.17)
1.75(0.00-3.75)
0.75
0.41
Corpus foemina
13.75(0.00-52.38)
0.75(0.00-2.27)
0.50
0.38
Smilax bona-nox
2.25(0.00-6.43)
1.75(0.00-5.51)
0.50
0.29
Arundinaria gigantea
1.25(0.00-3.64)
2.50(0.00-7.09)
0.25
0.28
Toxicodendron radicans
2.25(0.00-5.78)
1.00(0.00-2.30)
0.75
0.28
Ulmus americana
0.75(0.00-3.14)
0.25(0.00-1.05)
0.25
0.09
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
ndix G-19. Huddles West Well HWW4 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Lemna sp.
95.10(88.79-101.41)
9,510.00(8,878.92-10,141.08)
1.00
2.28
Cyperus odoratus
1.60(0.00-4.97)
1.60(0.00-3.89)
0.30
0.12
Toxicodendron radicans
0.70(0.00-1.82)
1.00(0.00-2.26)
0.30
0.11
Eupatorium capillifolium
0.55(0.00-1.67)
3.60(0.00-11.50)
0.20
0.07
Echinochloa waited
0.40(0.00-1.00)
0.30(0.00-0.78)
0.20
0.07
Polygonum punctatum
0.25(0.00-0.70)
0.50(0.00-1.27)
0.20
0.07
Rosa palustris
0.70(0.00-2.28)
0.50(0.00-1.63)
0.10
0.04
Morelia cerifera
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.04
Hydrocotyle verticillata
0.10(0.00-0.33)
1.50(0.00-4.89)
0.10
0.03
Symphyotrichum subulatum
0.10(0.00-0.33)
0.30(0.00-0.98)
0.10
0.03
Liquidambar styraciflua
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Smilax rotundifolia
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Vitis rotundifolia
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Baccharis halimifolia
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
ndix G-20. Huddles West Well HWW4 Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Toxicodendron radicans
3.90(0.00-9.31)
2.00(0.69-3.31)
0.80
0.87
Morelia cerifera
7.20(0.00-15.20)
0.90(0.00-1.82)
0.50
0.72
Baccharis halimifolia
4.60(0.00-9.24)
1.00(0.17-1.83)
0.50
0.60
Rosa palustris
1.50(0.00-3.23)
1.00(0.00-2.17)
0.30
0.37
Ulmus americana
2.50(0.00-6.36)
0.20(0.00-0.50)
0.20
0.24
Smilax rotundifolia
0.20(0.00-0.50)
0.30(0.00-0.78)
0.20
0.14
Quercus phellos
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.06
Appendix G-21. Huddles West Well HWW7 Herbs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) confidence interval) I occurrence value'
Lemna sp.
78.35(59.17-97.53)
7,835.00(5,916.86-9,753.14)
1.00
2.06
Typha angustifolia
19.50(1.52-37.48)
12.80(5.42-20.18)
0.70
0.40
Hydrocotyle verticillata
1.70(0.00-3.78)
23.00(0.00-57.11)
0.30
0.11
Phragmites australis
0.80(0.00-1.96)
2.20(0.00-4.83)
0.30
0.10
Symphyotrichum subulatum
0.20(0.00-0.65)
0.50(0.00-1.63)
0.30
0.09
Polygonum densiflorum
0.50(0.00-1.63)
0.60(0.00-1.96)
0.20
0.07
Cyperus odoratus
1.30(0.00-3.32)
2.40(0.00-6.02)
0.10
0.04
Toxicodendron radicans
0.60(0.00-1.57)
1.10(0.00-2.96)
0.10
0.04
Polygonum punctatum
0.20(0.00-0.65)
0.30(0.00-0.98)
0.10
0.03
Pluchea odorata
0.10(0.00-0.25)
0.30(0.00-0.78)
0.10
0.03
Morelia cerifera
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
G-28

ndix G-22. Huddles West Well HWW7 Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Baccharis halimifolia
4.60(0.00-10.19)
0.80(0.24-1.36)
0.60
1.11
Toxicodendron radicans
1.60(0.00-3.76)
0.90(0.19-1.61)
0.60
0.89
Morella cerifera
4.00(0.00-10.03)
0.30(0.00-0.78)
0.20
0.60
Persea palustris
0.80(0.00-2.61)
0.10(0.00-0.33)
0.10
0.17
Smilax rotundifolia
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.12
Rosa palustris
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.11
Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
ndix G-23. Huddles West Well HWW8 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Lemna sp.
99.30(98.58-100.02)
9,930.00(9,858.07-10,001.93)
1.00
2.52
Cyperus odoratus
3.10(0.00-7.32)
1.10(0.00-2.47)
0.30
0.20
Eupatorium capillifolium
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.06
Acer rubrum
0.05(0.00-0.16)
0.20(0.00-0.65)
0.10
0.06
Pluchea odorata
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.06
Phragmites australis
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.06
Typha latifolia
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.06
ndix G-24. Huddles West Well HWW8 Shrubs 2018
Average percent cover (Average number of stems (95%I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence value'
Baccharis halimifolia 4.10(0.00-9.74) 0.50(0.00-1.01) 0.40 2.09
Ulmus americana 3.00(0.00-9.79) 0.20(0.00-0.65) 0.10 0.91
ndix G-25. Jacks Creek Well 2 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Hydrocotyle verticillata
3.05(0.00-6.42)
16.20(2.39-30.01)
0.90
0.83
Arundinaria gigantea
5.40(0.18-10.62)
3.80(0.73-6.87)
0.50
0.44
Polygonum punctatum
4.10(0.00-8.69)
3.10(0.00-6.29)
0.60
0.39
Saururus cernuus
4.80(0.00-11.46)
2.80(0.00-5.83)
0.40
0.36
Leersia virginica
3.53(0.00-10.24)
3.80(0.00-9.01)
0.40
0.34
Toxicodendron radicans
2.50(0.00-8.16)
0.50(0.00-1.63)
0.10
0.13
Echinochloa walteri
0.70(0.00-1.87)
0.90(0.00-2.70)
0.20
0.10
Acer rubrum
0.08(0.00-0.16)
0.30(0.00-0.65)
0.30
0.08
Campsis radicans
0.53(0.00-1.65)
0.40(0.00-1.09)
0.20
0.08
Eclipta prostrata
0.80(0.00-2.61)
0.10(0.00-0.33)
0.10
0.06
Fraxinus pennsylvanica
0.60(0.00-1.96)
0.10(0.00-0.33)
0.10
0.05
Bignonia capreolata
0.20(0.00-0.65)
0.30(0.00-0.98)
0.10
0.04
Cyperus odorata
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.03
Smilax rotundifolia
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Pluchea odorata
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
ndix G-26. Jacks Creek Well 2 Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value'
Arundinaria gigantea
21.30(4.20-38.40)
46.10(14.64-77.56)
0.80
1.57
Sabal minor
15.00(0.00-30.58)
2.40(0.00-5.02)
0.70
0.58
Fraxinus pennsylvanica
7.20(0.00-15.96)
3.10(0.63-5.57)
0.70
0.42
Smilax rotundifolia
0.40(0.00-0.91)
1.40(0.00-2.88)
0.40
0.15
Campsis radicans
0.08(0.00-0.20)
0.30(0.00-0.78)
0.20
0.07
Smilax bona-nox
0.13(0.00-0.35)
0.20(0.00-0.50)
0.20
0.07
Morella cerifera
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
0.04
Quercus laurifolia
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.04
Ulmus americana
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Toxicodendron radicans
0.13(0.07-0.18)
0.10(0.00-0.33)
0.10
0.03
Appendix G-27. Jacks Creek Well 3 Herbs 2018
G-29

Average percent cover I Average number of stems (95% I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence value
Hydrocotyle verticillata
2.55(0.28-4.82)
16.80(0.96-32.64)
0.70
0.59
Saururus cernuus
1.15(0.00-2.48)
1.20(0.00-2.54)
0.40
0.18
Leersia virginica
0.30(0.00-0.65)
1.40(0.00-3.02)
0.30
0.14
Toxicodendron radicans
0.38(0.00-1.05)
0.30(0.00-0.65)
0.30
0.12
Campsis radicans
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.04
Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
ndix G-28. Jacks Creek Well 3 Shrubs 2018
Average percent cover (Average number of stems (95%I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence value
Sabal minor
14.50(3.51-25.49)
2.00(0.65-3.35)
0.80
0.64
Baccharis halimifolia
16.00(4.71-27.29)
1.00(0.33-1.67)
0.70
0.52
Morella cerifera
13.40(0.00-31.36)
0.90(0.00-1.88)
0.40
0.40
Toxicodendron radicans
6.70(0.39-13.01)
1.20(0.39-2.01)
0.60
0.38
Fraxinus pennsylvanica
7.00(0.65-13.35)
1.00(0.17-1.83)
0.50
0.34
Smilax bona-nox
1.10(0.00-2.59)
0.90(0.00-2.14)
0.30
0.19
Smilax rotundifolia
0.70(0.00-1.82)
0.50(0.00-1.20)
0.30
0.14
Campsis radicans
0.55(0.00-1.67)
0.50(0.00-1.41)
0.20
0.11
Quercus laurifolia
1.00(0.00-2.51)
0.20(0.00-0.50)
0.20
0.08
Ilex opaca
1.00(0.00-2.51)
0.20(0.00-0.50)
0.20
0.08
Bignonia capreolata
0.15(0.00-0.39)
0.20(0.00-0.50)
0.20
0.07
Persea borbonia
1.00(0.00-3.26)
0.10(0.00-0.33)
0.10
0.05
Appendix G-29. Jacks Creek Well 5 Herbs 2018
Average percent cover
I Average number of stems (95%
I Frequency of
I Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value
Phragmites australis 99.00(96.74-101.26) 42.50(35.92-49.08) 1.00 2.90
Saba/ minor 0.20(0.00-0.65) 0.20(0.00-0.65) 0.10 0.10
Appendix G-30. Jacks Creek Well 5 Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value
Baccharis halimifolia 4.00(0.00-10.91) 0.20(0.00-0.50) 0.20 0.97
Appendix G-31. Jacks Creek Well 7 Herbs 2018
Scientific name
Average percent cover
(95% confidence interval)
I Average number of stems (95%
confidence interval)
I Frequency of
occurrence
I Importance
value
Hydrocotyle verticillata
10.20(0.00-22.73)
59.00(6.49-111.51)
0.60
0.90
Leersia virginica
16.60(0.00-33.85)
20.10(3.27-36.93)
0.70
0.63
Samolus valerandi spp. parviflorus
3.75(0.00-10.40)
4.60(0.00-11.50)
0.60
0.22
Saururus cernuus
3.90(0.00-10.60)
3.00(0.00-6.89)
0.40
0.17
Toxicodendron radicans
2.10(0.21-3.99)
3.80(0.47-7.13)
0.50
0.16
Juncus coriaceus (clumps)
5.50(0.00-16.74)
0.40(0.00-1.00)
0.20
0.14
Arundinaria gigantea
3.40(0.00-10.15)
1.10(0.00-3.35)
0.20
0.11
Polygonum punctatum
0.60(0.00-1.20)
1.00(0.00-2.07)
0.40
0.09
Microstegium vimineum
1.80(0.00-4.54)
1.80(0.00-4.54)
0.20
0.09
Mikania scandens
0.90(0.00-2.27)
0.20(0.00-0.50)
0.20
0.05
Smilax bona-nox
0.60(0.00-1.57)
0.30(0.00-0.78)
0.20
0.05
Campsis radicans
0.40(0.00-1.09)
0.30(0.00-0.78)
0.20
0.04
Baccharis halimifolia
0.25(0.00-0.70)
0.30(0.00-0.78)
0.20
0.04
Carex intumescens
0.90(0.00-2.94)
0.10(0.00-0.33)
0.10
0.03
Ilex opaca
0.80(0.00-2.61)
0.10(0.00-0.33)
0.10
0.03
Pluchea odorata
0.50(0.00-1.63)
0.20(0.00-0.65)
0.10
0.03
Symphyotrichum subulatum
0.20(0.00-0.65)
0.50(0.00-1.63)
0.10
0.03
Bignonia capreolata
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
0.03
Galium tinctorium
0.10(0.00-0.33)
0.50(0.00-1.63)
0.10
0.02
Parthenocissus quinquefolia
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.02
Rubus trivialis
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.02
Persea palustris
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.02
Eclipta prostrata
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.02
G-30

Liriodendron tulipifera 0.05(0.00-0.16) 0.10(0.00-0.33) 0.10 0.02
Viola sororia 0.05(0.00-0.16) 0.10(0.00-0.33) 0.10 0.02
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
3endix G-32. Jacks Creek Well 7 Shrubs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value
Arundinaria gigantea
14.00(1.40-26.60)
11.70(1.47-21.93)
0.50
0.71
Sabal minor (clumps)
24.00(12.22-35.78)
2.40(0.88-3.92)
0.80
0.51
Fraxinus pennsylvanica
13.80(1.01-26.59)
2.00(0.42-3.58)
0.90
0.39
Toxicodendron radicans
4.60(1.11-8.09)
1.70(0.19-3.21)
0.70
0.23
Smilax bona-nox
3.30(0.80-5.80)
2.00(0.18-3.82)
0.60
0.21
Smilax rotundifolia
2.60(0.00-5.60)
2.50(0.00-5.29)
0.40
0.19
Quercus laurifolia
2.70(0.24-5.16)
0.70(0.02-1.38)
0.50
0.14
Persea palustris
4.00(0.00-8.06)
0.50(0.00-1.01)
0.40
0.13
Baccharis halimifolia
7.00(0.00-18.71)
0.40(0.00-1.09)
0.20
0.13
Liquidambar styraciflua
2.70(0.00-8.32)
0.60(0.00-1.73)
0.20
0.09
Carpinus caroliniana
2.00(0.00-5.02)
0.20(0.00-0.50)
0.20
0.06
Campsis radicans
1.00(0.00-2.51)
0.30(0.00-0.78)
0.20
0.06
Parthenocissus quinquefolia
1.00(0.00-2.51)
0.20(0.00-0.50)
0.20
0.05
Decumaria barbara
0.50(0.00-1.41)
0.20(0.00-0.50)
0.20
0.05
Bignonia capreolata
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.02
Ulmus americana
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.02
ndix G-33. Jacks Creek Well 9 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value
Typha angustifolia
26.30(13.05-39.55)
8.50(5.07-11.93)
1.00
1.22
Polygonum punctatum
16.00(0.00-35.03)
4.90(0.43-9.37)
0.70
0.76
Pluchea odorata
1.00(0.25-1.75)
2.70(0.24-5.16)
0.60
0.33
Phragmites australis
4.00(0.00-10.03)
2.50(0.00-6.36)
0.20
0.26
Sagittaria lancifolia
3.70(0.00-8.42)
1.00(0.00-2.01)
0.40
0.24
Samolus valerandi spp. parviflorus
0.30(0.00-0.78)
1.50(0.00-3.91)
0.20
0.14
Symphyotrichum subulatum
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.05
ndix G-34. Jacks Creek Well 9 Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
valuea
Sabal minor
12.00(0.00-25.30)
1.70(0.00-3.52)
0.40
0.68
Iva frutescens
7.20(2.22-12.18)
1.50(0.53-2.47)
0.70
0.65
Morella cerifera
13.00(2.18-23.82)
1.00(0.11-1.89)
0.50
0.62
Baccharis halimifolia
10.00(2.65-17.35)
0.90(0.19-1.61)
0.60
0.58
Smilax bona-nox
0.70(0.00-1.87)
0.70(0.00-1.87)
0.20
0.20
Ulmus americana
1.50(0.00-3.91)
0.20(0.00-0.50)
0.20
0.14
Toxicodendron radicans
0.50(0.00-1.63)
0.20(0.00-0.65)
0.10
0.08
Juniperus virginiana
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.06
ndix G-35. Jacobs Creek Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value
Microstegium vimineum
14.80(0.00-34.52)
16.20(0.00-35.76)
0.50
1.18
Glechoma hederacea
5.00(0.00-10.85)
3.90(0.18-7.62)
0.40
0.41
Carex intumescens
4.20(0.00-8.95)
2.50(0.33-4.67)
0.50
0.37
Arundinaria gigantea
4.10(0.00-9.99)
1.50(0.00-3.23)
0.40
0.30
Smilax bona-nox
1.00(0.00-2.77)
1.30(0.00-3.27)
0.50
0.22
Toxicodendron radicans
0.80(0.00-2.18)
1.00(0.00-2.65)
0.20
0.12
Saururus cernuus
1.00(0.00-3.26)
1.20(0.00-3.91)
0.10
0.10
Smilax rotundifolia
0.51(0.00-1.64)
0.20(0.00-0.50)
0.20
0.08
Berchemia scandens
0.06(0.00-0.17)
0.20(0.00-0.50)
0.20
0.07
Sabal minor (clumps)
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.05
Boehmeria cylindrica
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Campsis radicans
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Acer rubrum
0.01(0.00-0.03)
0.10(0.00-0.33)
0.10
0.03
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence
G-31

The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
ndix G-36. Jacobs Creek Shrubs 2018
Average percent cover I Average number of stems (95% I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence value
Arundinaria gigantea
29.25(6.68-51.82)
68.30(9.15-127.45)
0.80
2.11
Smilax rotundifolia
0.80(0.00-1.92)
1.10(0.00-2.51)
0.40
0.20
Berchemia scandens
0.60(0.00-1.72)
0.30(0.00-0.65)
0.30
0.15
Carpinus caroliniana
2.00(0.00-5.46)
0.30(0.00-0.78)
0.20
0.14
Vitis aestivalis
0.80(0.00-2.05)
0.30(0.00-0.78)
0.20
0.11
Sabal minor
2.00(0.00-6.52)
0.10(0.00-0.33)
0.10
0.10
Smilax bona-nox
0.20(0.00-0.50)
0.20(0.00-0.50)
0.20
0.09
Callicarpa americana
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.05
Parthenocissus quinquefolia
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.05
ndix G-37. Lonq Creek Well 2B Herbs 2018
Average percent cover I Average number of stems (95% I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence valuea
Hydrocotyle verticillata
6.30(0.00-12.88)
38.70(4.45-72.95)
0.60
0.99
Triglochin striata
5.60(0.00-14.97)
14.80(0.00-38.78)
0.20
0.51
Pluchea odorata
2.85(0.00-6.43)
2.30(0.19-4.41)
0.60
0.30
Samolus valerandi spp. parviflorus
0.70(0.02-1.38)
1.90(0.00-4.75)
0.50
0.17
Centella erecta
1.00(0.00-2.82)
5.00(0.00-14.08)
0.20
0.16
Dichanthelium sp.
0.90(0.00-2.27)
1.80(0.00-4.83)
0.20
0.11
Glyceria striata
1.60(0.00-5.22)
0.20(0.00-0.65)
0.10
0.10
Morella cerifera
0.11(0.00-0.26)
0.40(0.00-0.90)
0.30
0.08
Carex debilis
0.60(0.00-1.57)
0.20(0.00-0.50)
0.20
0.08
Polygonum punctatum
0.40(0.00-1.09)
0.30(0.00-0.78)
0.20
0.07
Arundinaria gigantea
0.60(0.00-1.96)
0.80(0.00-2.61)
0.10
0.06
Juncus roemarianus
0.50(0.00-1.63)
0.20(0.00-0.65)
0.10
0.05
Toxicodendron radicans
0.40(0.00-1.30)
0.20(0.00-0.65)
0.10
0.04
Woodwardia aerolata
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.03
Eupatorium capillifolium
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.03
Gelsemium sempervirens
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.03
Lycopus virginicus
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Baccharis halimifolia
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Liquidambar styracif/ua
0.01(0.00-0.03)
0.20(0.00-0.65)
0.10
0.03
Dioscorea villosa
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
Pinus sp.
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
Persea palustris
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
Acer rubrum
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
ndix G-38. Lonq Creek Well 2B Shrubs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
value
Morella cerifera
28.60(9.62-47.58)
3.90(1.50-6.30)
0.80
1.03
Arundinaria gigantea
6.50(0.00-14.24)
7.30(0.00-15.70)
0.50
0.74
Vaccinium corymbosum
2.90(0.00-6.43)
0.80(0.00-1.74)
0.40
0.22
Smilax rotundifolia
2.00(0.00-5.36)
1.00(0.00-2.39)
0.30
0.19
Liquidambar styracif/ua
3.70(0.00-8.05)
0.40(0.00-0.90)
0.30
0.18
Baccharis halimifolia
2.50(0.00-7.04)
0.50(0.00-1.27)
0.20
0.14
Persea palustris
1.80(0.00-5.19)
0.60(0.00-1.73)
0.20
0.13
Vitis rotundifolia
0.80(0.00-1.96)
0.40(0.00-0.90)
0.30
0.13
Toxicodendron radicans
0.35(0.00-1.03)
0.20(0.00-0.50)
0.20
0.08
Smilax bona-nox
1.50(0.00-4.89)
0.20(0.00-0.65)
0.10
0.07
Nyssa biflora
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.04
Ilex glabra
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.04
Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value can theoretically range from
0.00 to 3.00
3endix G-39. Tooley Creek Well TW1 Herbs 2018
Average percent cover I Average number of stems (95% I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence valuea
Polygonum punctatum 11.50(0.00-23.43) 3.00(0.14-5.86) 0.40 0.73
G-32

Samolus valerandi spp. parviflorus
1.50(0.00-3.74)
4.80(0.00-10.66)
0.40
0.49
Leersia virginica
5.10(0.00-16.39)
2.40(0.00-6.91)
0.20
0.40
Arundinaria gigantea
3.30(0.00-8.07)
2.00(0.00-4.52)
0.30
0.34
Pluchea odorata
0.70(0.00-1.53)
1.10(0.00-2.47)
0.30
0.19
Mikania scandens
0.50(0.00-1.01)
0.60(0.00-1.29)
0.40
0.18
Sabal minor
2.50(0.00-8.16)
0.10(0.00-0.33)
0.10
0.13
Smilax rotundifolia
0.50(0.00-1.27)
0.60(0.00-1.73)
0.20
0.12
Tripsacum dactyloides
1.50(0.00-4.89)
0.20(0.00-0.65)
0.10
0.10
Toxicodendron radicans
0.20(0.00-0.50)
0.20(0.00-0.50)
0.20
0.08
Erechtites hierachifolia
0.40(0.00-1.30)
0.20(0.00-0.65)
0.10
0.06
Typha angustifolia
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.05
Smilax bona-nox
0.30(0.00-0.08)
0.20(0.00-0.65)
0.10
0.05
Juncus roemarianus
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.04
Eupatorium capilifolium
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.04
Appendix G-40. Tooley Creek Well TW1 Shrubs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value'
Arundinaria gigantea
14.50(0.00-34.91)
23.40(0.00-57.46)
0.40
1.52
Vitis rotundifolia
2.80(0.75-4.85)
0.70(0.22-1.18)
0.60
0.35
Quercus laurifolia
4.50(0.00-9.95)
0.40(0.00-0.90)
0.30
0.29
Smilax rotundifolia
0.45(0.00-1.04)
1.20(0.00-3.04)
0.30
0.18
Smilax bona nox
1.00(0.00-2.26)
0.60(0.00-1.50)
0.30
0.17
Saba/ minor
1.30(0.00-3.32)
0.40(0.00-1.00)
0.20
0.14
Quercus nigra
1.50(0.00-3.91)
0.20(0.00-0.50)
0.20
0.14
Persea palustris
1.00(0.00-3.26)
0.20(0.00-0.65)
0.10
0.08
Baccharis halimifolia
1.00(0.00-3.26)
0.10(0.00-0.33)
0.10
0.08
Toxicodendron radicans
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.06
Appendix G-41. Tooley Creek Well TW3 Herbs 2018
Average percent cover Average number of stems (95% Frequency of Importance
Scientific name (95% confidence interval) I confidence interval) I occurrence value'
Phragmites australis
25.00(0.00-50.46)
14.50(0.00-30.18)
0.50
1.71
Pluchea odorata
1.85(0.13-3.57)
2.20(0.21-4.19)
0.60
0.44
Samolus valerandi spp. parvif/orus
0.30(0.00-0.78)
1.70(0.00-4.52)
0.20
0.18
Sabal minor
4.00(0.00-13.05)
0.10(0.00-0.33)
0.10
0.17
Bolboschoenus robustus
0.05(0.00-0.13)
0.40(0.00-1.00)
0.20
0.11
Amaranthus cannabinus
0.13(0.00-0.35)
0.20(0.00-0.50)
0.20
0.10
Polygonum punctatum
0.80(0.00-2.61)
0.10(0.00-0.33)
0.10
0.07
Hydrocotyle verticillata
0.10(0.00-0.33)
0.50(0.00-1.63)
0.10
0.07
Eupatorium capilifolium
0.20(0.00-0.65)
0.40(0.00-1.30)
0.10
0.07
Toxicodendron radicans
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.06
3endix G-42. Tooley Creek Well TW3 Shrubs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value'
Sabal minor
13.00(0.00-31.41)
1.00(0.00-2.26)
0.30
0.96
Vitis rotundifolia
7.70(0.00-16.58)
0.60(0.10-1.10)
0.50
0.82
Arundinaria gigantea
2.00(0.00-6.52)
2.00(0.00-6.52)
0.10
0.60
Smilax rotundifolia
1.00(0.00-3.26)
0.60(0.00-1.96)
0.10
0.25
Baccharis halimifolia
1.00(0.00-2.51)
0.20(0.00-0.50)
0.20
0.24
Morella cerifera
1.00(0.00-3.26)
0.10(0.00-0.33)
0.10
0.14
Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
Appendix G-43. Tooley Creek Well TW4 Herbs 2018
Average percent cover
I Average number of stems (95% I
Frequency of I
Importance
Scientific name
(95% confidence interval)
confidence interval)
occurrence
value'
Hydrocotyle verticillata
7.60(0.00-20.96)
69.50(0.00-203.73)
0.60
1.17
Echincloa walterii
13.70(0.00-31.64)
4.50(0.00-9.55)
0.50
0.53
Arundinaria gigantea
5.40(0.00-14.65)
3.50(0.00-8.91)
0.20
0.23
Microstegium vimineum
2.20(0.00-6.70)
2.10(0.00-6.60)
0.20
0.13
Smilax rotundifolia
1.40(0.00-3.31)
1.50(0.00-3.35)
0.30
0.13
Eupatorium serotinum
3.60(0.00-11.74)
0.10(0.00-0.33)
0.10
0.12
Polygonum punctatum
1.50(0.00-3.91)
1.60(0.00-4.04)
0.20
0.11
G-33

Erechtites hierachifolia
1.80(0.00-5.19)
0.30(0.00-0.78)
0.20
0.10
Acer rubrum
0.08(0.00-0.20)
0.20(0.00-0.50)
0.20
0.06
Morella cerifera
0.08(0.00-0.20)
0.20(0.00-0.50)
0.20
0.06
Solanum carolinese
0.80(0.00-2.61)
0.20(0.00-0.65)
0.10
0.05
Quercus laurifolia
0.60(0.00-1.96)
0.10(0.00-0.33)
0.10
0.04
Cyperus odoratus
0.30(0.00-0.98)
0.20(0.00-0.65)
0.10
0.04
Toxicodendron radicans
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.04
Pluchea odorata
0.10(0.00-0.33)
0.20(0.00-0.65)
0.10
0.03
Apios americana
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Berchemia scandens
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Baccharis halimifolia
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
Rubus flagellaris
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
Parthenocissus quinquefolia
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
ndix G-44. Toolev Creek Well TW4 Shrubs 2018
Average percent cover
number of stems (95%I
Frequency of
importance
Scientific name
(95% confidence interval)
(Average
confidence interval)
occurrence I
value
Arundinaria gigantea
18.50(4.80-32.20)
30.10(6.69-53.51)
0.60
1.17
Morella cerifera
17.30(1.87-32.73)
2.10(0.00-4.79)
0.50
0.45
Smilax rotundifolia
2.55(0.05-5.05)
4.40(0.38-8.42)
0.50
0.27
Sabal minor
3.80(0.69-6.91)
1.80(0.00-3.98)
0.50
0.23
Quercus nigra
5.70(0.00-15.13)
0.50(0.00-1.41)
0.20
0.15
Vitis rotundifolia
1.70(0.00-3.75)
0.90(0.00-1.88)
0.40
0.15
Baccharis halimifolia
5.00(0.00-13.26)
0.20(0.00-0.50)
0.20
0.14
Quercus phellos
2.30(0.00-5.08)
0.30(0.00-0.65)
0.30
0.12
Liquidambar styraciflua
2.70(0.00-7.32)
0.30(0.00-0.78)
0.20
0.10
Campsis radicans
0.20(0.00-0.45)
0.60(0.00-1.37)
0.30
0.09
Toxicodendron radicans
1.00(0.00-3.26)
0.20(0.00-0.65)
0.10
0.05
Fraxinus pennsylvanica
0.50(0.00-1.63)
0.10(0.00-0.33)
0.10
0.03
Quercus laurifolia
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Berchemia scandens
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
ndix G-45. Toolev Creek Well TW6 Herbs 2018
Average percent cover
Average number of stems (95%
Frequency of
importance
Scientific name
(95% confidence interval)
I confidence interval) I
occurrence I
valuea
Microstegium vimenium
31.30(0.00-63.69)
31.60(0.00-63.88)
0.80
1.41
Leersia virginica
10.00(0.00-32.62)
10.00(0.00-32.62)
0.10
0.41
Toxicodendron radicans
1.63(0.47-2.78)
3.40(0.92-5.88)
0.80
0.28
Arundinaria gigantea
3.30(0.00-7.06)
2.00(0.00-4.41)
0.40
0.19
Rubus flagellaris
0.90(0.00-2.27)
0.50(0.00-1.27)
0.20
0.07
Sanicula canadensis
0.25(0.00-0.70)
0.30(0.00-0.78)
0.20
0.06
Parthenocissus quinquefolia
0.15(0.00-0.39)
0.40(0.00-1.09)
0.20
0.06
Acer rubrum
0.08(0.00-0.20)
0.30(0.00-0.78)
0.20
0.05
Smilax bona-nox
0.08(0.00-0.20)
0.20(0.00-0.50)
0.20
0.05
Berchmia scandens
0.50(0.00-1.63)
0.50(0.00-1.63)
0.10
0.04
Viola sororia
0.20(0.00-0.65)
0.80(0.00-2.61)
0.10
0.04
Polygonum punctatum
0.60(0.00-1.96)
0.10(0.00-0.33)
0.10
0.04
Smilax rotundifolia
0.20(0.00-0.65)
0.40(0.00-1.30)
0.10
0.03
Vitis rotundifolia
0.40(0.00-1.30)
0.10(0.00-0.33)
0.10
0.03
Liquidambar styraciflua
0.30(0.00-0.98)
0.10(0.00-0.33)
0.10
0.03
Dichanthelium commutatum
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.03
Woodwardia virginica
0.20(0.00-0.65)
0.20(0.00-0.65)
0.10
0.03
Erechtites hierachifolia
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.03
Asplenium sp.
0.20(0.00-0.65)
0.10(0.00-0.33)
0.10
0.03
Dichanthelium laxiflorum
0.10(0.00-0.33)
0.10(0.00-0.33)
0.10
0.03
Samolus valerandi spp. parviflorus
0.05(0.00-0.16)
0.10(0.00-0.33)
0.10
0.03
Quercus laurifolia
0.03(0.00-0.08)
0.10(0.00-0.33)
0.10
0.03
3endix G-46. Tooley Creek Well TW6 Shrubs 2018
Average percent cover I Average number of stems (95% I Frequency of I importance
Scientific name (95% confidence interval) confidence interval) occurrence valuea
Arundinaria gigantea 27.20(17.10-37.30) 30.60(22.63-38.57) 1.00 1.63
Vitis rotundifolia 2.50(1.27-3.73) 1.20(0.64-1.76) 0.80 0.31
G-34

Smilax rotundifolia
3.90(0.00-8.53)
3.80(0.00-8.31)
0.40
0.29
Callicarpa americana
3.00(0.00-8.64)
0.30(0.00-0.78)
0.20
0.12
Toxicodendron radicans
1.30(0.00-3.54)
0.40(0.00-0.90)
0.30
0.12
Quercus phellos
2.50(0.00-6.36)
0.20(0.00-0.50)
0.20
0.11
Quercus nigra
2.50(0.00-6.36)
0.20(0.00-0.50)
0.20
0.11
Baccharis halimifolia
3.50(0.00-11.42)
0.10(0.00-0.33)
0.10
0.10
Quercus laurifolia
2.00(0.00-6.52)
0.10(0.00-0.33)
0.10
0.07
Berchemia scandens
1.50(0.00-4.89)
0.40(0.00-1.30)
0.10
0.07
Vaccinium corymbosum
1.50(0.00-4.89)
0.30(0.00-0.98)
0.10
0.07
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative frequency of occurrence.
The relative values of these three factors are not shown on this table for brevity. The importance value theoretically can range from
0.00 to 3.00
G-35

Appendix G-30. Huddles West Well HWW2 Herbs 2017.
Average percent
Average number of
Frequency of
Importance
Scientific name
cover (95%
stems (95%
occurrence
values
confidence interval)
confidence interval)
Phragmites australis
75.00(75.00-75.00)
24.00(21.85-26.15)
0.75
2.40
Toxicodendron radicans
0.75(0.24-1.26)
2.00(0.00-5.04)
0.50
0.42
Smilax rotundifolia
0.06(n/a)
0.25(n/a)
0.25
0.18
Appendix G-30. Huddles West Well HWW2 Shrubs 2017.
Scientific name
Average percent
cover (95%
confidence interval)
Average number of
stems (95%
confidence interval)
Frequency of
occurrence
Importance
values
Baccharis halimifolia
20.50(14.47-26.53)
2.75(1.68-3.82)
1.00
0.62
Berchemia scandens
9.50(0.00-20.26)
1.75(1.34-2.16)
0.75
0.36
Toxicodendron radicans
3.25(2.42-4.08)
1.25(0.84-1.66)
0.75
0.24
Smilax bona-nox
1.75(0.10-3.40)
2.50(1.41-3.59)
0.75
0.30
Corpus amomum
18.75(5.85-31.65)
1.25(0.84-1.66)
0.75
0.46
Bignonia capreolata
0.75(n/a)
0.25(n/a)
0.25
0.07
Morella cerifera
14.25(11.67-16.83)
1.25(0.84-1.66)
0.75
0.40
Parthenocissus quinquefolia
0.75(0.24-1.26)
0.50(0.50-0.50)
0.50
0.12
Arundinaria gigantea
1.50(1.50-1.50)
3.75(3.24-4.26)
0.50
0.34
Vitis rotundifolia
0.75(0.24-1.26)
1 0.50(0.50-0.50)
0.25
0.08
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative
frequency of occurrence. The relative values of these three factors are not shown on this table for brevity.
The importance value can theoretically can range from 0.00 to 3.00
G-36

Appendix G-29. Huddles West Well HWW2 Herbs 2016.
Average percent
Average number of
Frequency of
Importance
Scientific name
cover (95%
stems (95%
occurrence
values
confidence interval)
confidence interval)
Phragmites australis
72.50(68.37-76.63)
14.50(14.09-14.91)
0.75
2.25
Toxicodendron radicans
4.00(0.77-7.23)
1.50(0.78-2.22)
0.75
0.57
Smilax rotundifolia
0.50(n/a)
0.50(n/a)
0.25
0.18
Appendix G-30. Huddles West Well HWW2 Shrubs 2016.
Scientific name
Average percent
cover (95%
confidence interval)
Average number of
stems (95%
confidence interval)
Frequency of
occurrence
Importance
values
Berchemia scandens
1.50(-0.52-3.52)
0.50(0.50-0.50)
0.50
0.19
Baccharis halimifolia
17.50(6.77-28.23)
3.00(1.57-4.43)
1.00
0.93
Toxicodendron radicans
3.00(1.76-4.24)
1.00(0.59-1.41)
0.75
0.33
Smilax bona-nox
0.75(0.75-0.75)
0.75(0.75-0.75)
0.75
0.25
Corpus amomum/foemina
13.75(0.21-27.29)
0.75(0.75-0.75)
0.75
0.54
Morella cerifera
8.50(1.74-15.26)
1.25(0.84-1.66)
0.75
0.48
Arundinaria gigantea
0.25(n/a)
1.25(n/a)
0.25
0.20
Vitis rotundifolia
0.25(n/a)
0.25(n/a)
0.25
0.08
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative
frequency of occurrence. The relative values of these three factors are not shown on this table for brevity.
The importance value can theoretically can range from 0.00 to 3.00
G-37

Appendix G-29. Huddles Creek West Prong Well 2 Herbs 2014.
Average percent
Average number of
Frequency of
Scientific name
cover 95%
(
stems 95%
(
a
Importance value
confidence interval)
confidence interval)
occurrence
Phragmites australis
30.00(9.77-50.23)
5.25(-2.34-12.84)
0.50
2.11
Toxicodendron radicans
1.75(0.10-3.40)
0.75(0.75-0.75)
0.75
0.67
Rubus f/agellaris
0.38(n/a)
0.25(n/a)
0.25
0.22
Appendix G-30. Huddles Creek West Prong Well 2 Shrubs 2014.
Scientific name
Average percent
cover (95 /o
confidence interval)
Average number of
stems (95 /o
confidence interval)
Frequency of
occurrence
a
Importance value
Baccharis halimifolia
43.75(24.96-62.54)
8.00(4.54-11.46)
1.00
1.37
Toxicodendron radicans
2.00(0.51-3.49)
1.00(0.59-1.41)
0.75
0.29
Berchemia scandens
0.50(0.50-0.50)
0.50(0.50-0.50)
0.50
0.17
Morella cerifera
8.75(6.22-11.28)
0.75(0.24-1.26)
0.50
0.30
Corpus amomum
6.25(n/a)
0.25(n/a)
0.25
0.17
Arundinaria gigantea
7.50(n/a)
5.75(n/a)
0.25
0.52
Campsis radicans
0.50(n/a)
0.25(n/a)
0.25
0.09
Vitis rotundifolia
0.13(n/a)
0.25(n/a)
0.25
0.08
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative
frequency of occurrence. The relative values of these three factors are not shown on this table for brevity. The
importance value can theoretically can range from 0.00 to 3.00
G-38

Appendix G-29. Huddles Creek West Prong Well 2 Herbs 2013.
Average percent Average number of
Scientific name cover (95% stems (95% Frequency of Importance
occurrence values
confidence interval) confidence interval)
Baccharis halimifolia
1.38(0.00-3.65)
1.25(0.74-1.76)
0.50
0.57
Hydrocotyle verticillata
0.03(n/a)
0.75(n/a)
0.25
0.25
Mikania scandens
0.25(n/a)
0.25(n/a)
0.25
0.17
Viola sorria
0.05(n/a)
0.25(n/a)
0.25
0.15
Arundinaria gigantea
0.50(n/a)
0.75(n/a)
0.25
0.29
Parthenocissus quinquefolia
0.13(n/a)
0.25(n/a)
0.25
0.16
Toxicodendron radicans
8.75(1.16-16.34)
1.25(0.74-1.76)
0.50
1.22
Corpus amomum
0.25(n/a)
0.25(n/a)
0.25
0.17
Appendix G-30. Huddles Creek West Prong Well 2 Shrubs 2013.
Average percent Average number of
Scientific name cover (95% stems (95% Frequency of Importance
occurrence values
confidence interval) confidence interval)
Toxicodendron radicans
4.25(1.19-7.31)
1.25(0.89-1.61)
1.00
0.31
Baccharis halimifolia
40.00(21.30-58.70)
11.50(6.81-16.19)
1.00
1.09
Arundinaria gigantea
14.25(9.08-19.42)
17.50(11.30-23.70)
1.00
0.94
Berchemia scandens
1.50(0.00-3.52)
0.50(0.50-0.50)
0.50
0.14
Morelia cerifera
8.75(6.22-11.28)
1.00(0.00-2.01)
0.50
0.25
Corpus amomum
6.25(n/a)
0.25(n/a)
0.25
0.14
Campsis radicans
0.50(n/a)
0.25(n/a)
0.25
0.07
Vitis rotundifolia
0.25(n/a)
0.25(n/a)
0.25
0.06
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative
frequency of occurrence. The relative values of these three factors are not shown on this table for
brevity. The importance value can theoretically can range from 0.00 to 3.00
G-39

Table H-15. Huddles Cut West Prong Well 2* Herbs 2009.
Average percent Average number of
Scientific name cover (95% stems (95% occurrence values
ncyof Importance
confidence interval confidence interval
occurrence
Toxicodendron radicans
7.00(0.00-14.76)
3.20(0.00-6.92)
1.00
1.00
Parthenocissus quinquefolia
0.30(0.00-0.98)
0.20(0.00-0.65)
0.25
0.08
Eupatorium capillifolium
0.10(0.00-0.25)
0.30(0.00-0.78)
0.50
0.12
Mikania scandens
0.50(0.00-0.13)
0.20(0.00-0.50)
0.50
0.10
Hydrocotyle verticillata
0.20(0.00-0.65)
1.70(0.00-5.55)
0.25
0.22
Viola sororia
0.03(0.00-0.08)
0.10(0.00-0.33)
0.25
0.05
Berchemia scandens
0.10(0.00-0.33)
0.10(0.00-0.33)
0.25
0.06
Quercus laurifolia
0.05(0.00-0.16)
0.20(0.00-0.65)
0.25
0.06
Morella cerifera
0.63(0.00-1.98)
0.40(0.00-1.09)
0.50
0.17
Liriodendron tulipifera
0.03(0.00-0.08)
0.20(0.00-0.65)
0.25
0.06
Microstegium vimineum
3.05(0.00-9.82)
1.90(0.00-5.95)
0.50
0.49
Asplenium platyneuron
0.05(0.00-0.16)
0.10(0.00-0.33)
0.25
0.05
Smilax rotundifolia
0.40(0.00-1.30)
0.40(0.00-1.30)
0.25
0.11
Corpus amomum
0.20(0.00-0.65)
0.20(0.00-0.65)
0.25
0.07
Carex lurida
1.00(0.00-3.26)
0.60(0.00-1.96)
0.25
0.17
Lonicera japonica
0.05(0.00-0.16)
0.10(0.00-0.33)
0.25
0.05
Dichanthelium commutatum
0.10(0.00-0.33)
0.10(0.00-0.33)
0.25
0.06
Galium tinctorium
0.05(0.00-0.16)
0.20(0.00-0.65)
0.25
0.06
Table H-16. Huddles Cut West Prona Well 2* Shrubs 2009.
Average percent Average number of
Scientific name cover (95% stems (95% Frequency of Importance
occurrence values
confidence interval) confidence interval)
Corpus amomum
5.50(0.00-14.8)
0.50(0.00-1.27)
0.50
0.83
Ilex verticillata
1.00(0.00-3.26)
0.40(0.00-1.30)
0.25
0.31
Berchemia scandens
3.00(0.00-6.02)
1.90(0.00-3.82)
1.00
1.27
Morella cerifera
2.00(0.00-5.46)
0.20(0.00-0.50)
0.50
0.43
Rubus flagellaris
0.30(0.00-0.98)
0.10(0.00-0.33)
0.25
0.16
* As a result of timbering only 4 plots were surveyed.
a Importance value is the sum of relative percent cover, relative density (stems per quadrat), and relative
frequency of occurrence. The relative values of these three factors are not shown on this table for brevity.
The importance value can theoretically can range from 0.00 to 3.00
G-40