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NC DMS Closeout Report
9/29/15
Brock Stream and Buffer Site
Project Name
Project ID 92333
Project Type Riparian Buffer and Nutrient Offset Site
Basin Tar-Pamlico
14 digit CU 03020204
County Jones
Applicable Buffer Rule Tar-Pamlico Buffer Rule &
15A NCAC 02B .0240 (Nutrient Offset Payments)
Date Planted 6/2009
Date of Supplemental Plant 2/2010
3/2014
Protection mechanism Conservation Easement
Easement Acreage 8.06
Stewards NC DOT
Encroachments & Resolution Y Minor encroachment by mowing, notice of violation sent,
easement posts replaced and area replanted
Accepted for transfer to stewardship Y
Brock Asset Table
Buffer Widths Buffer Buffer Mitigation Resulting Buffer width Mitigation Mitigation
Credit Ratio Mitigation Credit ratio Units Unit Type
Units
Measured from TOB (sq. ft.) R 1:1 (sq. ft.) 100%
(linear feet)
0-50 184,259 (sq. ft.) R - 1:1 184,259 100% 184,259* Buffer
mitigation units
50 -100 85,813 (sq. ft.) R - 1:1 85,813 100% 85,813* nutrient offset
4,477.85 lbs.-N mitigation units
Total mitigation 184, 259 Sq. Ft. Buffer
units 4,477.85 lbs.-N
*2014 closeout asset allocation: 85,813 nutrient offset, 184,259 buffer
Stream Enhancement II = 1,850 linear feet
Neuse Buffer Restoration (50' buffer) = 4.23 acres
Neuse Buffer Restoration (beyond 50') = 1.97 acres
TotalBuffer Area = 6.20 acres
Existing
Cemetery
LEGEND
Conservation EasementLimits
Neuse Buffer Restoration (50' buffer)
Neuse Buffer Restoration (beyond 50')
Map Source: Googlemaps, 2014
The information depicted on this
figure is for illustrativepurposes only.
It was not prepared for, and is not
suitable for legal or engineering
Unnamed Tributary
200 feet
purposes.
PROJECT ASSET MAP
Brock Stream Restoration Site, Jones County, NC
FIGURE 2
EEP Project No. 92333
February 18, 2014
Closeout Report Brock Stream Restoration Site, Jones County Page 5
NCDENR Ecosystem Enhancement Program
Prepared by Ecological Engineering, LLP, February 2014
Table 6. Cross Section Comparisons
Brock Stream Restoration Site
Cross Section #1 Cross Section #2 Cross Section #3
Attribute
Station 11+00Station 15+00Station 23+00
Monitoring Year 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
Bankfull area (sq. feet) 7.2 4.6 5.7 6.4 6.2 6.9 6.4 7.7 7.5 6.7 7.2 4.6 3.7 3.7 3.3
Bankfull width (feet) 8.7 7.8 7.8 8.2 7.7 8.3 8.0 8.8 9.6 7.5 9.0 9.3 7.9 7.9 7.9
Bankfull mean depth
0.8 0.6 0.7 0.8 0.8 0.8 0.8 0.9 0.8 0.9 0.4 0.5 0.5 0.5 0.4
(feet)
Bankfull max depth
1.4 0.9 1.0 1.1 1.1 1.4 1.4 1.5 1.6 1.5 0.7 0.9 0.8 0.7 0.7
(feet)
Width-depth ratio 10.5 13.2 10.8 10.5 9.5 9.9 10.0 10.0 12.3 8.4 82.3 18.6 17.0 16.7 19.3
Flood prone area width
52.4 44.3 48.0 49.9 48.3 49.9 49.2 49.8 50.0 49.5 51.0 52.1 50.6 49.7 49.3
(feet)
Entrenchment ratio 6.0 5.7 6.1 6.1 6.3 6.0 6.2 5.6 5.2 6.6 1.8 5.6 6.4 6.3 6.2
Low bank height ratio 1.0 1.0 1.4 1.3 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Vegetation Data Summary
Stem counts were conducted within four strategically placed 10-meter by 10-meter plots. The plots
were located based on a representative sample of the entire area of disturbance. They are scattered
throughout the Project Site in order to cover the majority of the habitat variations. Vegetation Plots #1,
#2 and #4 are related to stream and buffer mitigation credit and occur within the 50-foot buffer of the
channel. Vegetation Plot #3 is outside of the 50-foot zone and falls under either buffer mitigation credit
or Nutrient Offset Nitrogen Reduction credit.
A total of two supplemental plantings were conducted at the Brock site. In March 2013, an additional
840 containerized hardwood trees were installed due to low vigor. In March 2014, an additional 50
bareroot hardwood trees were installed due to a minor landowner encroachment.
The chart below provides a summary of the vegetation counts within plots as of March 2014. All
vegetation plots met the success criteria required for buffer mitigation or Nutrient Offset Nitrogen
credit, as well as the success criteria for stream mitigation credit.
Vegetation Total Stem Count/ Acre Planted Stem Planted, Hardwood Stem Count/ Acre
Plot No. (SMU Credit) Count/ Acre (BMU or Nutrient Offset N Credit)
1 1,295 688 688
2 364 364 364
3 n/a 323 323
4 647 323 323
Note that the March 2014 planting took place ĂźĊśʼn the MY5 vegetation counts, therefore, are not
reflected in Table 9 on the following page.
Closeout Report Brock Stream Restoration Site, Jones County Page 10
NCDENR Ecosystem Enhancement Program
Prepared by Ecological Engineering, LLP, February 2014
Vegetation Maintenance Plan
Legend
^
Staging Area
Brock Site EEP #92333
Supplemental Planting Zones
Jones County
Invasives Mgmt Zone
Brock_CE
December 2012
Brock_Cemetery
087.5175350
Feet
UV
1
U
V
2
U
V
3
Supplemental Planting
TARGET INVASIVE SPECIES:
- Ligustrum sinesis
ZoneAcreageQuantity
- Melia azedarach
10.59 180
- Paulownia tomentosa
21.21 360
- Wisteria sinensis
31.05 300
- Lonicera japonica
- Rubus sp.
NOTE: See Project Manual for tree species list
and diversity selection guidelines.
Treatment Area = approximately 0.6 acres
Site access is via dirt farm
road off of Highway 58.
NOTES:
Vehicle access to staging area at upper end of project through
farm road off of Highway.
Vehicle access to both sides of easement area along edge of farm fields.
Mitigation Project Name
Brock (Intra-program Purchase)
EEP IMS ID92333
River BasinNEUSE
Cataloging Unit03020204
Comment: This ledger shows the debits for the amount of mitigation that the Riparian Buffer ILF Program purchased from the NCDOT ILF Program.
The beginning balance represents the amount purchased and not the total mitigation credits available on the site.
Applied Credit Ratios:1:11.5:12.5:15:11:13:12:15:11:13:12:15:11:13:12:15:11:13:11:11:1
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Beginning Balance (feet and acres)184,258.80
Beginning Balance (mitigation credits)184,258.80
NCDOT Pre-EEP Debits (feet and acres):Not Applicable
EEP Debits (feet and acres):
DWQ PermitsUSACE Action IDsImpact Project Name
NCDOT TIP U-3101C -
Widening of US 1/64
2004-1055184,258.80
Remaining Balance (feet and acres)0.00
Remaining Balance (mitigation credits)0.00
Information from EEP Debit Ledger dated 3/12/2014
Mitigation Project Name
Brock
EEP IMS ID92333
River BasinNEUSE
Cataloging Unit03020204
Applied Credit Ratios:1:11.5:12.5:15:11:13:12:15:11:13:12:15:11:13:12:15:11:13:119.16326:11:11:1
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Beginning Balance (feet and acres)1,850.00184,258.8085,813.20
Beginning Balance (mitigation credits)1,233.33184,258.804,478.01
NCDOT Pre-EEP Debits (feet and acres):NCDOT TIP R-25391,453.50
EEP Debits (feet and acres):
DWQ PermitsUSACE Action IDsImpact Project Name
NCDOT TIP R-2301A -
New Bern Bypass
2008-09842008-02206-025396.50
Riparian Buffer ILF Credit Purchase184,258.80
Remaining Balance (feet and acres)0.000.0085,813.20
Remaining Balance (mitigation credits)0.000.004,478.01
Information from EEP Debit Ledger dated 3/12/2014