HomeMy WebLinkAbout20041235 Ver 1_More Info Received_20090401DIq .- ?23s
APR 12009
D'SALSTTORA i? ewwcH
STATE OF NORTH CAROLINA
DEPARTWNT OF TRANSPORTATION
BEVERLY EAVES PERDUE
GOVERNOR
March 27, 2009
MEMORANDUM TO:
FROM:
SUBJECT:
EUGENE A. CONTI, JR.
SECRETARY
Mickey Sugg
Army Corps of Engineers
LeiLani Paugh
Natural Enviro Un
Privateer Farm Mitigation Site
During the field review of the Privateer Farm Mitigation Site in Cumberland and Bladen
Counties on February 3, 2009 the IRT expressed concerns that the graded elevation of
the old roadbed running the length of the site may impede hydrology across the site or not
regain jurisdictional wetland status. The IRT also requested an assessment of vegetation
monitoring plots 11, 13, and 14 for volunteer species.
On February 25, 2009 NEU staff conducted transects across the graded roadbed. During
an agency walk-through it was believed that the graded elevation may impede hydrology
across the site. Elevations along twenty (20) transects were recorded and plotted to depict
the location of transects and general topography of the site. Multiple elevations were shot
along each transect and three points were used in generating the accompanying data table.
Elevations that were omitted from the table include points that were taken in ditches and
on remnant spoil piles.
The survey data illustrates that along eight (8) transects, the road elevation was slightly
higher than the elevation of the adjacent wetlands. These differences in elevation ranged
from 0.02" to 0.18", with an average of 0.1125" higher. It was also determined that along
eight (8) of the transects the roadbed elevation fell between the wetland elevations on
either side. The remaining four (4) transects demonstrated the roadbed as having been
graded to an elevation below that of the adjacent wetlands. Those differences in elevation
ranged from 0.01" to 0.16" lower, with an average of 0.0825" lower.
NEU staff also conducted the assessment of the three vegetation monitoring plots on the
same day.
MAILING ADDRESS: TELEPHONE: 919-431-2000
NC DEPARTMENT OF TRANSPORTATION LOCATION:
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS PDEA - Environmental Resource Center
NATURAL ENVIRONMENT UNIT FAX: 919-431-2001 4701-116 Atlantic Ave.
1598 (MAIL SERVICE CENTER Raleigh NC 27604
RALEIGH NC 27699-1598 WEBSITE: WWW.NCDOT.ORG
Attached are the transect location figure, the data summary table, and the species list with
approximate coverage by plot.
If you have any questions, please contact me at 919-431-6541.
attachments
3 monitoring plots checked for plant species 2/25/09
K.M. Lynch, J.L. Williams
Plot #14
Polygonum (densiflorum?) OBL 80%
Eupatorium capillifolium FACU 10%
Scirpus cyperinus OBL 5%
Baccharis halimifolia FAC 2%
Solidago fstulosa?) FAC+ 2%
Carex sp. (need fruit to id) 2%
Plot # 13
Polygonum (densiflorum?) OBL 30%
Eupatorium capillifolium FACU 20%
Scirpus cyperinus OBL 5%
Baccharis halimifolia FAC 2%
Solidago (fistulosa?) FAC+ 50%
Carex sp. (need fruit to id) 15%
Acer rubrum FACW 4 saplings
Plot # 11
Polygonum (densiflorum?) OBL 20%
Eupatorium capillifolium FACU 30%
Scirpus cyperinus OBL 5%
Baccharis halimifolia FAC 5%
Solidago (fistulosa?) FAC+ 60%
Carex sp. (need fruit to id) 5%
Rubus argutus FAC 5%
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