ANNUAL REPORT FOR 2010
Osprey Seafood Mitigation Site
Beaufort County
TIP No. R-2510B
COE Action ID #: 199301143
DWQ Project #: 20050785
DCM Permit #: 29-07
Prepared By:
Natural Environment Unit & Roadside Environmental Unit
North Carolina Department of Transportation
August 2010
TABLE OF CONTENTS
SUMMARY ...........................................................................................................1
1.0 Introduction ...............................................................................................2
.1 Project Description .........................................................................2
.2 Purpose .........................................................................................2
.3 Project History ................................................................................2
.4 Debit Ledger ....................................................................................2
2.0 Vegetation: ................................................................................................3
.1 Success Criteria .............................................................................3
.2 Description of Species.....................................................................3
.3 Results of Vegetation Monitoring ....................................................4
.4 Conclusions. ...................................................................................4
3.0 Overall Conclusions and Recommendations .............................................4
FIGURES
Figure 1 – Site Location Map ...............................................................................5
APPENDICES
Appendix A – Site Photos
1
SUMMARY
The Osprey Seafood Mitigation Site is located in Beaufort County. The site was
planted in March 2008 and was designed as mitigation for wetland impacts
associated with roadway project R-2510B Washington Bypass.
The mitigation encompasses approximately 0.6 acres of wetland restoration and
3.5 acres of preservation. The restoration effort involved grading the property to
an elevation that approximates the adjacent wetlands, and then ripping to
promote vegetation re-establishment. The site was then planted and will be
monitored to ensure that it meets the vegetation success criteria. No hydrologic
monitoring is required for this project; however, vegetation monitoring is required
for three years.
There was one vegetation monitoring plot established throughout the 0.6 acre
planting area. After the third year, the 2010 vegetation monitoring of the site
revealed an average tree density of 534 trees per acre.
NCDOT proposes to discontinue vegetation monitoring at the Osprey Seafood
Mitigation Site.
2
1.0 INTRODUCTION
1.1 Project Description
The Osprey Seafood Mitigation Site is located in Beaufort County. The site
consists of approximately 0.6 acres of wetland restoration for wetland impacts
associated with project R-2510B.
1.2 Purpose
In order for a mitigation site to be considered successful, a site must meet
vegetation success criteria. This report details the vegetation monitoring in 2010
at the Osprey Seafood Mitigation Site. Hydrologic monitoring was not required
for the site.
1.3 Project History
March 2008 Site Planted
July 2008 Vegetation Monitoring (1 year)
August 2009 Vegetation Monitoring (2 year)
August 2010 Vegetation Monitoring (3 year)
1.4 Debit Ledger
The entire Osprey Seafood mitigation site was used for the R-2510B project to
compensate for unavoidable wetland impacts.
3
2.0 VEGETATION: OSPREY SEAFOOD MITIGATION SITE
(YEAR 3 MONITORING)
2.1 Success Criteria
Success Criteria states that the Osprey Seafood mitigation site shall be
monitored for three years. The NCDOT shall submit an annual summary report
at the end of each of the first two years after the completion of the project. The
report shall discuss the sites vegetative and hydrologic changes. This report can
be qualitative in nature, and is in lieu of the usual quantitative hydrology and
success criteria. At the end of the third year after project completion, the NCDOT
will coordinate a field visit to the site, at which time the DWQ will determine the
success of the mitigation, and the site may be declared successful with written
approval from the NC Division of Water Quality. If, at the end of the three year
monitoring period, the NC Division of Water Quality feels that the success cannot
be determined or has not been achieved, then the NCDOT will coordinate field
visits on an annual basis until the NCDWQ is satisfied that the site is successful.
2.2 Description of Species
The following wetland species were planted in the Wetland Restoration Area:
Taxodium distichum, Baldcypress
Quercus lyrata, Overcup Oak
Quercus michauxii, Swamp Chestnut Oak
Nyssa aquatica, Water Tupelo
Fraxinus pennsylvanica, Green Ash
Quercus laurifolia, Laurel Oak
4
2.3 Results of Vegetation Monitoring
Site Notes: A vegetation plot was set on site to determine if the Design/Build
contractor would need to replant the site. We will continue to report this
vegetation plot, even though, the success criteria states that this report can be
qualitative in lieu of the usual quantitative data. Other species noted on site
included: fennel, red maple, woolgrass, sycamore, black willow, baccharis, and
cattail. Volunteer baldcypress and green ash trees were noted naturally
sprouting up on site.
2.4 Conclusions
There is one vegetation monitoring plot established throughout the 0.6 acre
planting area. The 2010 vegetation monitoring of the site revealed an average
density of 534 trees per acre.
3.0 OVERALL CONCLUSIONS AND RECOMMENDATIONS
The following report summarizes the monitoring activities that have occurred in
the past year for the Osprey Seafood Mitigation Site. Monitoring activities in
2010 represent the third year of monitoring for the site. The site must
demonstrate vegetation success for a minimum of three years or until the site is
deemed successful.
There was one vegetation monitoring plot established throughout the 0.6 acre
planting area. The 2010 vegetation monitoring of the site revealed an average
density of 534 trees per acre.
NCDOT proposes to discontinue vegetation monitoring at the Osprey Seafood
Mitigation Site.
Plot #
Baldcypress
Overcup Oak
Swamp Chestnut Oak
Water Tupelo
Green Ash
Laurel Oak
Total (Year 3)
Total (at planting)
Density (Trees/Acre)
1 12 1 1 6 4 33 4 2 534
Av era ge De nsi ty (T rees/Acre ) 534
5
Figure 1. Site Location Map
APPENDIX A
SITE PHOTOS
Osprey Seafood Mitigation Site
Photo 1 Photo 2
Photo 3
August 2010