HomeMy WebLinkAbout20061199 Ver 1_ IRT Closeout Report_20120424d6- !)9`�
Conoconnara Stream and Wetland Mitigation Site
Environmental Banc & Exchange, LLC
DENR — EEP Contract No. 16- DO5024
Halifax County, North Carolina
IRT Site Closeout
April 24, 2012
Figure 1. Conoconnara Mitigation Site Assets Map
Figure 2. Conoconnara Watershed Map
Figure 3. Conoconnara Mitigation Site Onsite Soils Delineation Map
Figure 1. Monthly Precipitation for Conoconnara Mitigation Restoration Site
Table 1. Monthly Precipitation for Conoconnara Restoration Site
Table 2. Growing Seasons Meeting Hydrologic Goals
Table 3.2012 Max Hydroperiod (Growing season 30 -March through 4 — November, 214 days)
Table. 2011 Conoconnara — Groundwater Gauge 4
Table. 2011 Conoconnara — Groundwater Gauge 11
Table. 2012 Conoconnara — Groundwater Gauge 4
Table. 2012 Conoconnara — Groundwater Gauge 11
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Figure 2. LEGEND
Proposed Conservation Easement
USGS Quad Map Road
Conoconnara, Halifax County, NC Stream Drainage Area
0 1,000 2,000 SOURCES: USGS, Scotland Neck, NC, Quadrangle, 1962
Feet Dawson Crossroads, NC, Quadrangle, 1960
Conoconnara Mitigation Project
Halifax County, North Carolina
2010 Hydrologic Restoration Assessment
April 2012
Figure 1. Monthly Precipitation for Conoconnara Mitigation Restoration Site
14
13
12
11
10
Growing Season
-- - - - --
-- --
p 9
C S
O 7
6
5
'
a
3
-
2
1
J F M A M J J A S O N D
Months
• • • • • • • 30th /70th Percentile -- 9 Enfield Precipitation 2007 +Enfield Precipitation 2008 -- E Enfield Precipitation 2009
—t —Enfield Precipitation 2010 —aA Enfield Precipitation 2011 ---0 Enfield Precipitation 2012
Table 1. Monthly Precipitation for Conoconnara Restoration Site
Month
Average
Normal Limits
Enfield
Precipitation
2007
Enfield
Precipitation
2008
Enfield
Precipitation
2009
Enfield
Precipitation
2010
Enfield
Precipitation
2011
Enfield
Precipitation
2012
30
Percent
70
Percent
January
4.23
3.20
5.01
2.61
1.38
1.90
4.62
1.62
2.47
February
3.47
2.37
4.29
2.47
4.29
0.92
2.90
l .l 1
2.52
March
4.22
3.12
4.95
F 2.72
4.35
8.06
6.36
5.56
1.61
April
3.16
2.14
3.94
2.22
5.71
1.27
1.36
3.18
0.24*
May
3.94
2.58
4.77
9
3.92
2.76
3.64
1.54
--
June
3.62
2.48
4.25
1.78
3.91
2.52
2.06
July
4.25
2.76
5.07
3
4.72
2.10
4.45
4.36
August
4.26
2.60
5.62
1.45
4.21
5.09
2.59
12.54
September
4.58
2.19
5.52
1.58
3.17
3.54
8.56
430
October
3.33
2.01
4.35
3.73
L61
1.47
3.32
4.2
--
November
3.04
1.86
3.59
0.55
4.43
8.41
0.80
3.79
December
3.26
2.29
4.06
W4. 87
3.48
6.44
2.92
1.26
Annual
40.39
49.25
33?9
43.05
45.57
43.96
45.57
6.84*
Total
45.36
* Data through April 16, 2012
al Rainfall Abox e Nonnal Limits
Table 2. Growing Seasons Meeting Hydrologic Goals
Percent of Growing Season Meeting Criteria
Max Consecutive Wetland H dro eriod
Gauge
Monitoring
Year
2007
2008
2009
2010 **
2011
2012 * **
Successful Years
/Years Monitored
AW1
0
5
1
19
30
9
3 of 6
AW 1 Surface
*
*
2
19
13
* * * *
2 of 3
AW2
6
18
8
8
20
6
5 of 6
AW3
2
8
8
7
12
5
4 of 5
AW 3 Surface
*
*
11
7
13
* * * *
3 of 3
AW4
1
2
1
3
12
2
1 of 6
AW 4 Surface
*
*
2
7
13
* * * *
2 of 3
AW5
4
7
7
7
26
9
5 of 6
AW 5 Surface
*
*
8
11
13
* * * *
3 of 3
AW6
3
6
3
8
30
9
3 of 6
AW 6 Surface
*
*
3
9
13
* * * *
2 of 3
AW7
2
4
3
8
24
7
3 of 6
AW 7 Surface
*
*
7
9
13
* * * *
3 of 3
AW8
4
8
7
7
19
5
5 of 6
AW9
5
7
8
9
24
8
4 of 5
AW10
2
7
3
8
29
9
4 of 6
AW 10 Surface
*
*
3
10
13
* * * *
2 of 3
AW 11
0
0
8
6
7
0
2 of 6
AW 11 Surface
*
*
4
8
13
* * * *
2 of 3
AW12
4
18
8
9
27
9
5 of 6
AW 12 Surface
*
*
23
21
13
* * **
3 of 3
REF AW 1
4 26
13 10
18
7
5 of 6
REF AW2
12 25
13 9
15
7
6 of 6
REF AW3
0 16
8 4 of 6
5% to 7% WWI 7% and Greater
Less than 5%
* Gauge not installed
* *Data for 2010 through September 2
** *Data for 2012 through April 18 (20 days into growing season)
* * * *No data due to download device failure
Table 3. 2012 Max Hydroperiod (Growing season 30 -Mar through 4 -Nov, 214 days)*
Consecutive
Cumulative
Gauge
Days
Percent of
growing
Season
Days
Percent of
growing
Season
Occurrences
AW 1
20
9
20
9
1
AW2
12
6
12
6
1
AW3
10
5
10
5
1
AW4
5
2
5
2
1
AW5
20
9
20
9
1
AW6
20
9
20
9
1
AW7
14
7
14
7
1
AW8
10
5
10
5
1
AW9
17
8
17
8
1
AW10
19
9
19
9
1
AW11
0
0
0
0
0
AW 12
20
9
20
9
1
REF AW 1
16
7
16
7
1
REF AW2
14
7
14
7
1
REF AW3
11
5
11
5
1
*Data through April 18, 2012
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