HomeMy WebLinkAbout20080511 Ver 3_Year 4 Monitoring Report_20181106ID#* 20080511
Select Reviewer:*
Katie Merritt
Initial Review
Completed Date
11/06/2018
Mitigation Project Submittal -11/6/2018
Version* 3
Is this a Prospectus, Technical Proposal or a New Site? * r Yes r No
Type of Mitigation Project:*
r Stream r Wetlands PF Buffer PF Nutrient Offset
(Select all that apply)
Project Contact Information
Contact Name:* Email Address:*
David Knowles ocesdk@gmail.com
Project Information
Existing 20080511 Existing 3
(DWR) (nunbersonly ...nodash) Version: (nun-bersonly)
I D#: *
Project Name: La Grange Phase II Fourth Annual Report
County: Lenoir
Document Information
Mitigation Document Type:*
Mitigation Monitoring Report
File Upload: La Grange II 4th Annual Report GES 2018.pdf 2.02MB
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Signature
Print Name:* David Knowles
Signature:*
La Grange Mitigation Bank, Phase II
Fourth Annual Report / October 2018
Greene Environmental Services, LLC
Neuse River Umbrella Mitigation Bank / DWR#: 2008-05110
Submitted to:
Katie Merritt
NC Department of Environmental Quality
Division of Water Resources — Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617 Phone: (919) 807-6371; Fax: (919) 8076494
Submitted by:
Greene Environmental Services, Jeff Becker and David Knowles
Ham Farms, 963 Hwy 258 S
Snow Hill, NC 28580
(252) 747-8000
Table of Contents
1.0 Project Location and Description................................................................. 3
2.0 Plantings of Seedlings............................................................................. 4
3.0 Monitoring Plot Survey Results................................................................. 7
4.0 Monitoring, Maintenance and Supplemental Planting ....................................... 10
5.0 Nutrient Offset and Buffer Potential........................................................... 10
6.0 Appendices......................................................................................... 12
Appendix A: Figures
Figure 1: Vicinity map of LaGrange Mitigation Bank
Figure 2: Local aerial photograph of LaGrange Mitigation Bank
Figures 3: Aerial map of tracts
Figures 4: Survey plat of Phase II
Figure 5. Monitoring plot locations on Phase II
Appendix B: Monitoring Plots and Photographs
Plot page: LAG -3
Plot page: LAG -4
2
1.0 Project Location and Description
Greene Environmental Services, LLC (GES) of Snow Hill, North Carolina expanded a mitigation
bank at near La Grange, NC to include additional acreage for riparian buffer and nutrient offset
credits. A Site Closeout Inspection for the La Grange Bank Parcel (phase one) was conducted,
and subsequently approved, by staff from the North Carolina, Division of Water Resources
(NCDWR) in October 2017 following the fifth and final year monitoring effort at the Bank. As
with the initial project, the expansion acreage is included in the Greene Environmental Services
Neuse River Basin Riparian Buffer and Nutrient Offset Umbrella Bank. The expansion project is
named the La Grange Mitigation Bank, Phase II (Bank); this report is the fourth of five annual
monitoring reports submitted for review to the NCDWR.
The Bank is immediately adjacent to the initial La Grange Bank Parcel and is situated southwest
of the intersection of NC 903 and Old Jason Road (SR 1501), north of La Grange, in Lenoir
County, North Carolina (Appendix A: Figures 1, 2, 3 and 4). The latitude/longitude coordinates of
the site area approximately 35° 20'30.00" N and 77°47'21.56" W. The purpose of the Phase II
mitigation bank expansion is to improve water quality within the Neuse River Basin by reducing
nutrient and sediment inputs to the watershed and providing off-site mitigation for development
requiring nutrient offsets.
The Phase II bank parcel is located within the Middle Neuse Watershed (HUC: 03020202).
Storm water runoff from this site drains into Meeting House Branch (Stream Index # 27-72-3)
and via a farm drainage ditch and maintained canal system (un -named tributary, UT). Meeting
House Branch discharges to Bear Creek (Stream Index # 27-72-(0.1)), a major tributary to the
Neuse River (Appendix A: Figures 1 and 2).
The Phase II parcel is 3.50 acres. Of this 3.50 acres, 2.97 acres (6,750.87 lbs -N) were restored to
generate nutrient offsets and 0.52 acres (22,620.63 ft2) were restored to generate Neuse Riparian
Buffer Mitigation. The buffer restoration acreage was reduced by 30.57 ft2 as compared to the
BPDP. For reporting purposes, all acreages are rounded to the nearest hundredth of an acre.
Riparian buffer mitigation acreage was established in two sub -tracts labelled A and C in the
3
survey plat provided in Appendix A: Figures 4 and 5. Sub -tract A is 0.03 acres (1,491.00 ft2)
and buffers southerly flowing Meeting House Branch; sub -tract C is 0.49 acres (21,129.63 ft2)
and buffers the westerly flowing unnamed tributary to Meeting House Branch. Nutrient offset
acreage was established in two sub -tracts, B and D. Sub -tract B is 0.16 acres along the unnamed
tributary to Meeting House Branch and sub -tract D is 2.81 acres along a drainage ditch at the
eastern border of the Phase II tract that discharging to the UT that flows into Meeting House
Branch, and adjacent to the sub -tract C riparian buffer area. The riparian buffers extended from
the top of the ditch -banks 50 feet perpendicular to the buffered steam segments. The nutrient
offset acreage extended from the top of the ditch -banks a minimum of 50 feet and a maximum of
200 feet perpendicular to the buffered stream segments or to the border of Phase I. A 0.06 -acre
(2,613.60 ft2) triangular portion of the site adjacent to L-13 on the survey plat is beyond the 200 -
foot allowable limit for mitigation credit thus is not included in the mitigation credit calculations.
However, this isolated portion had to be purchased by Greene Environmental Services, LLC to
avoid the need to provide access an access easement. This Phase II bank parcel was established
under the terms and conditions of the Greene Environmental Services Neuse River Basin
Riparian Buffer and Nutrient Offset Umbrella Bank.
The Phase II parcel was previous agricultural cropland and approximately one acre was planted
with bald cypress and river birch saplings during March of 2010, at which time staff from the
NC Department of Environment and Natural Resources (now renamed the Department of
Environmental Quality), Division of Water Resources visited the site and determined that it was
suitable for mitigation. Katie Merritt with DWR visited the site in June of 2013 and determined
this Phase II acreage was still suitable for mitigation purposes.
2.0 Plantings of Seedlings the La Grange Mitigation Bank, Phase II
In an effort to restore some ecological functions and improve water quality in the local and
regional watersheds, the La Grange Mitigation Bank, Phase II project site was planted with
seedlings of native trees species and placed under permanent conservation easement. As a result
of these actions, the project site has been taken out of agricultural production, soils should
become better stabilized, and nutrient loading in adjacent streams should be reduced. Seedlings
4
of character tree species were planted in three installments during separate years prior to the
creation of the 3.50 -acre, La Grange Mitigation Bank, Phase II. In late winter of 2010 and 2014,
seedlings of river birch and bald cypress were planted in portions of the area that was to become
the Phase II expansion acreage (Table 1). In late winter of 2014 and 2015, yellow poplar, black
gum and sycamore were planted in the Phase II tracts. Also, in March of 2015, three oak species:
overcup oak, cherrybark oak and Shumard's oak were planted in the Phase II acreage.
Considering all planting installments, bald cypress and sycamore were the most frequently
planted species with the oak species least frequently planted (Table 1). A total of 1890 seedlings
were planted in the Phase II expansion acreage for an estimated density of 541.5 seedlings per
acre prior to the first annual monitoring effort.
Plantings by sub -tract were as follows: riparian buffer sub -tracts A and C were planted in 2015
with a mix of yellow poplar, black gum, sycamore, overcup oak, cherrybark oak and Shumard
oak, from the top of the stream bank outward to 50 feet. Nutrient offset sub -tract B was planted
in 2015 with the same tree species from the top of the stream bank to the border of the pre-
existing La Grange Bank Parcel (roughly 30 feet). Nutrient offset sub -tract D was planted the
same mix of species from the existing stand of trees (mostly bald cypress and river birch)
initially planted in 2010, to the pre-existing La Grange Bank Parcel boundary or up to 200 feet
from the top of the ditch bank. Survival rates of the planted seedlings were assessed by counting
stems in two 100m2 monitoring plots that were established in representative stands of the project
site.
In December 2016, during a site visit by GES personnel, an easement violation was discovered at
the La Grange Mitigation Bank, Phase II. This violation consisted of a mechanized vehicle
(tractor) entering the Bank and mowing approximately 0.58 acres of sub -tracts II -a and II -d
(Figure 4). The mowing was done without the knowledge or consent of GES, and presumably by
a local farmer or farm worker who mistook the area containing 2 to 3 year-old saplings as weeds,
even though the site was well -marked with signage prohibiting these activities. NC Division of
Water Resources staff was notified and following a site visit, a remedial plan was developed and
subsequently implemented in February 2017. In the affected area, 150 bald cypress, 100
sycamore and 5 black cherry saplings were planted as per guidance from DWR. A portion of
monitoring plot LAG -4 was mowed and remedial planting of two sycamore saplings in that plot
5
was accomplished. The additional planting of 255 saplings increased the planted stem density
for the Bank from 541.5 saplings per acre as reported above, to 612.9 per acre (Table 1).
In October 2017, a second easement violation was discovered in the same location as the
previous violation. The 2017 violation was smaller in extent (0.15 acres) and it was determined
that a hunter, who had leased hunting rights to the tract via an Indiana -based land leasing
company, had mowed lanes within the Bank for hunting access. Hunting is allowable in the Bank
but, as noted with on-site signage, mowing and vehicular traffic is not allowable. The leasing
company and the hunter were notified of the violation and no additional violations have
occurred. To remedy the violation, an Adaptive Management Plan was submitted to NCDWR in
December 2017 and subsequently successfully implemented by planting 65 sycamore
containerized saplings and 55 containerized river bitch saplings in the mowed area during
February 2018. The resulting planted sapling density for the entire Bank approximated 647
saplings per acre when considering remedial plantings as well as previous plantings (Table 1).
Table 1. Species planted in the 3.50 acre, La Grange Mitigation Bank, Phase II.
Species
Common name
Year planted
Seedlings planted
Betula nigra
River birch
2010, 2014
270/55**
Liriodendron tulipifea
Yellow poplar
2014, 2015
200
Nyssa sylvatica
Black gum
2014, 2015
220
Platanus occidentalis
Sycamore
2014,2015,2017*
420/100*/65**
Prunus serotina
Black cherry
2017*
5*
Quercus lyrata
Overcup oak
2015
100
Quercus pagoda
Cherrybark oak
2015
100
Quercus shumardii
Shumard oak
2015
100
Taxodium distichum
Bald cypress
2010,2014,2017*
480/150*
Total Number of Saplings Planted
2265 (647 per acre)*
*Based on remedial plantings in February 2017.
** Based on remedial planting in February 2018.
11
3.0 Monitoring Plot Survey Results for Year 2018
Two l Om x l Om (0.0247 acre) monitoring plots, LAG -3 and LAG -4, were established in the
3.50 -acre, La Grange Mitigation Bank, Phase II project area (Appendix A: Figure 5).
Monitoring plot LAG -3 was established in a portion of Phase II that was planted with bald
cypress and river birch saplings in 2010 and one yellow poplar planted in 2015. A plot
survey in September 2018 indicated that there were eleven planted character trees in LAG -3
for an estimated density of 445 saplings per acre (Table 2). Bald cypress was the most
frequently encountered species with a relative density of sixty-four percent; the relative
density of river birch and yellow poplar was twenty-seven and nine percent, respectively
(Table 2). One native, naturally colonizing red maple (Acer rubrum) was found in the plot.
The second monitoring plot, LAG -4, was situated in a portion of the Phase II expansion area
that was planted with saplings in 2015, with an additional remedial planting in 2017 and
2018. Six planted species were found in the monitoring plot, river birch, yellow poplar,
sycamore, cherrybark oak and Shumard's oak and bald cypress. A total of sixteen planted
saplings were found in the plot for an estimated density of 648 saplings per acre (Table 2).
Sycamore and Shumard's oak each accounted for twenty-five percent of the saplings in LAG -
4; each of the other four species accounted for nineteen percent or less of the total saplings in
the plot (Table 2). One stem each of the naturally colonizing species, black cherry (Prunus
serotina) and elm (Ulmus americana) were found in the plot.
Combining LAG -3 and LAG -4, the average planted saplings was 547 saplings per acre
(Table 3). Based on the two monitoring plots in the Bank, planted sapling density and total
sapling density both exceeded the target density of 320 stems per acre. Bald cypress and
river birch were the most frequently encountered species with relative densities of thirty and
nineteen percent, respectively, among six species of planted saplings (Table 3).
Stem heights in monitoring plots averaged 8.8+1.2 m (28.9+3.9 ft) in plot LAG -3 and 2.1+0.3
m (7.0±1.0 ft) in Plot LAG -4 (Table 4). Stem heights were higher in Plot LAG -3 since most
of these trees were as 4 to 8 years older than those in Plot LAG -4.
A comparison of survivorship in monitoring plots between those reported in the La Grange
Mitigation Bank, Phase II, Third Annual Report (2017) to the survey conducted in September
7
2018 and those reported in this document (Fourth Annual Report, 2018) indicated that there
was an overall increase in stem density of 40 trees per acre by September 2018 (Table 5).
Stem density in Plot LAG -3 did not change during the 2018 growing season. In Plot LAG -4,
stem density increased due to remedial planting and coppice sprouting from mowed stems or
below ground tissue from previously planted saplings but was not evident in 2017.
The monitoring plots in the Phase II acreage were photo -documented using digital
photography imaged from the northwestern corner of the plot. All saplings or trees were
flagging and their position within the plots were mapped (Appendix B).
Table 2. Planted tree sapling species, stem density and estimated stems per acre based on
surveys of 100m2 monitoring plots at the La Grange Mitigation Bank, Phase II.
Plot/Species
Common
name
Stems per
plot
Estimated
stems per acre
Species
Relative
Density
LAG -3
Betula nigra
River birch
3
121
27
Liriodendron tulipifera
Yellow poplar
1
40
9
Taxodium distichum
Bald cypress
7
283
64
LAG -3 Total
11
445
100
LAG -4
Betula nigra
River birch
2
81
13
Liriodendron tulipifera
Yellow poplar
2
81
13
Platanus occidentalis
Sycamore
4
162
25
Quercus pagoda
Cherrybark oak
3
121
19
Quercus shumardii
Shumard's oak
4
162
25
Taxodium distichum
Bald cypress
1
41
6
LAG -4 Total
16
648
100
M
Table 3. Estimated stems per acre are based on surveys of two 100m2 monitoring plots
combined (LAG -3 and LAG -4) at the La Grange Mitigation Bank, Phase II.
Plot/Species
Common name
Estimated stems Relative density
per acre (Percent)
Betula nigra
River birch
101 19
Liriodendron tulipifera
Yellow poplar
61 11
Taxodium distichum
Bald cypress
162 30
Platanus occidentalis
Sycamore
81 15
Quercus pagoda
Che bark oak
61 11
Quercus shumardii
Shumard's oak
81 15
Total for Planted Species
547 100
Table 4. Stem heights of planted tree sapling species. average stem heights of stems in 100m2
monitoring plots at the La Grange Mitigation Bank, Phase II.
Plot/Species
Common name
Average Stem Height
LAG -3
Meters+Std
Feet+Std
Betula nigra
River birch
13.0+1.0
48.6+3.9
Liriodendron tulipifera
Yellow poplar
5.0+0.0
16.4+0.0
Taxodium distichum
Bald cypress
8.4+2.4
27.6+7.8
LAG -3 Total
8.8+1.2
28.9+3.9
LAG -4
Meters+Std
Feet+Std
Betula nigra
River birch
1.5+0.0
4.9+0.0
Liriodendron tulipifera
Yellow poplar
2.0+0.7
6.6+2.3
Platanus occidentalis
Sycamore
2.8+0.3
9.0+0.9
Quercus pagoda
Cherrybark oak
1.8+0.6
6.0+1.9
Quercus shumardii
Shumard's oak
2.3+0.3
7.4+0.9
Taxodium distichum
Bald cypress
1.5+0.0
4.9+0.0
LAG -4 Total
2.1+0.3
7.0+1.0
9
Table 5. Comparison of seedling/sapling stem density per acre between the September 2017
and September 2018. Negative numbers represent a decline in stem density. Estimated stems
per acre are based on surveys of 100m2 monitoring plots at the La Grange Mitigation Bank,
Phase II.
Plot/Species
Common name
Estimated
stems per
acre Sept
2017
Estimated
stems per
acre Sept
2018
Change in
stem density
Betula nigra
River birch
61
101
40
Liriodendron tuli i era
Yellow poplar
61
61
0
Taxodium distichum
Bald cypress
142
162
20
Platanus occidentalis
Sycamore
101
81
-20
Quercus pagoda
Che bark oak
81
61
-20
Quercus shumardii
Shumard's oak
61
81
20
Total for Planted Species
507
547
40
4.0 Monitoring, Maintenance and Supplemental Planting
The LaGrange Mitigation Bank, Phase II will be monitored seasonally during 2018 to ensure that
the terms of the conservation easement are not being violated. Signage that designates the site as
a conservation area will be maintained. Based on monitoring plot field data collected in
September 2018, the Bank is performing adequately and no supplemental planting are required.
5.0 Riparian Buffer and Nutrient Offset Potential
The 3.50 -acre, La Grange Mitigation Bank, Phase II consists of 0.52 acres (22,620.63 ft2) of
potential Neuse Riparian Buffer credits in two sub -tracts as indicated in the Table 6 . Two
separate sub -tracts, totaling 2.97 acres, have the potential to generate 6,750.87 pounds of
nitrogen nutrient offset credits at 2273.02 lbs/ac.
10
Table 6. Potential riparian buffer and nutrient offset credits at the La Grange Mitigation Bank,
Phase II.
Sub -tract
Riparian Buffer
Sq.ft. Acres
Nutrient Offset
Acres
Nitrogen
Credits (lbs.)
A
1,491.00
0.03
NA
NA
B
NA
NA
0.16
363.68
C
21,129.63
0.49
NA
NA
D
NA
NA
2.81
6,387.19
Totals
22,620.63
0.52
2.97
6,750.87
11
6.0 Appendices
Appendix A: Figures
Figure 1: Vicinity map of La Grange Mitigation Bank, Phase II
Figure 2: Local aerial photograph of La Grange Mitigation Bank, Phase II
Figure 3: Aerial map of tracts at La Grange Mitigation Bank, Phase II
Figure 4: Survey plat of La Grange Mitigation Bank, Phase II
Figure 5. Monitoring plot locations at La Grange Mitigation Bank, Phase II
Appendix B: Monitoring Plot Maps and Photographs
Plot: LAG -3
Plot: LAG -4
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Figure 3. Aerial photograph depicting GES La Grange Mitigation Banks, Phases I and II. The area in red is Phase I.
Phase II includes: II -a nutrient buffer to field drainage ditch, II -b nutrient buffer to UT, II -c nutrient buffer to UT, Il -d riparian buffer
to UT and Il -e riparian buffer to Meeting House Branch.
E EMPRON APPROVAL STATEMENT
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P.C. 12, Pg. 99, AND INCLUDES ALL OF THE 2.62 ACRE TRACT
RECORDED IN P.L. 13. Pg. 371 OF THE LENOIR COUNTY REGISTRY.
C ERIIFICATE OF REVIEW OFFICER
CERTIFICATE Or REGISTRATION BY REGISTER OF BEERS MOSELEY HALL TWSP. - LENOIR CO, N.C.
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P.C. 12, Pg. 99, AND INCLUDES ALL OF THE 2.62 ACRE TRACT
RECORDED IN P.L. 13. Pg. 371 OF THE LENOIR COUNTY REGISTRY.
C ERIIFICATE OF REVIEW OFFICER
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GEs_.. Figure 5. Locations of 10m x 10m vegetation monitoring plots, LAG -3 and
LAG -4 in Phase II tract. LAG -3 is entirely within the nutrient offset acreage; LAG -4 is entirely
within the riparian buffer acreage.
G
Plot LAG -3
NE 10 m SE
10
9
8
7
6
5
4
3
2
1
0
0
1 2 3 4 5 6 7 8 9 10
NW
Seedling ID / Species
1. River birch
2. River birch
3. Bald cypress
4. Bald cypress
5. Bald cypress
6. Bald cypress
7. Bald cypress
8. Bald cypress
9. River birch
10. Bald cypress
11. Red maple VOLUNTEER
12. Yellow poplar
SW
Plot LAG -4
Plot LAG -4, mis-labelled in the photograph.
KIC 1n cc
NW
SW
Seedling ID / Species
1. Shumards oak
9. Shumards oak
17 Persimmon
2. Sycamore
10. Shumards oak
18 Sycamore Dead
3. Sycamore
11. Sycamore Dead
19 Yellow poplar
4. Cherrybark oak
12. Sycamore Dead
20 Black cherry
5. Cherrybark oak
13. Cherrybark oak
21 Elm
6. Sycamore
14. Cherrybark oak Dead 22 Cherry
7. Sycamore Dead
15. Yellow poplar
23 River birch
8. Shumards oak
16. Sycamore
24 River birch
25 Cypress