ANNUAL REPORT FOR 2007
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Town Creek Bridge
Brunswick County
TIP No. B-3115
CAMA permit No. 80-04
Prepared By:
Natural Environment Unit & Roadside Environmental Unit
North Carolina Department of Transportation
August 2007
TABLE OF CONTENTS
SUMMARY ...........................................................................................................1
1.0 Introduction ...............................................................................................2
.1 Project Description .........................................................................2
.2 Purpose .........................................................................................2
.3 Project History ................................................................................2
2.0 Vegetation: ................................................................................................3
.1 Success Criteria .............................................................................3
.2 Results of Vegetation Monitoring ....................................................3
.3 Conclusions. ...................................................................................3
3.0 Overall Conclusions and Recommendations .............................................3
FIGURES
Figure 1 – Site Location Map ...............................................................................4
APPENDICES
Appendix A – Site Photos
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SUMMARY
The Town Creek Bridge Mitigation Site (B-3115) is located in Brunswick County.
This is an annual report for temporary impacts associated with bridge
replacement of Bridge No. 61 over Town Creek on NC 133. The site was
completed in March 2005.
The temporary impacts encompass approximately 0.01 acres. The area that was
impacted by mechanized clearing is being monitored to ensure that it re-attains
wetland jurisdictional status. Hydrologic monitoring is not required for this site;
however, vegetation monitoring is required for three years.
After the third year of monitoring, the Town Creek Bridge site shows by visual
observation that the temporarily impacted area is re-attaining wetland
jurisdictional status.
NCDOT proposes to discontinue vegetation monitoring of this site.
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1.0 INTRODUCTION
1.1 Project Description
The Town Creek Bridge Mitigation Site (B-3115) is located in Brunswick County.
This is an annual report for temporary impacts associated with bridge
replacement of Bridge No. 61 over Town Creek on NC 133 (Figure 1).
1.2 Purpose
In order for a temporarily impacted site to be considered successful, the site must
re-attain wetland jurisdictional status. This report details the vegetation
monitoring in 2007 at the Town Creek Bridge site. Hydrologic monitoring was not
required for this site.
1.3 Project History
March 2005 Project Completed
July 2005 Vegetation Monitoring (1 year)
August 2006 Vegetation Monitoring (2 year)
August 2007 Vegetation Monitoring (3 year)
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2.0 VEGETATION: TOWN CREEK BRIDGE SITE
(YEAR 3 MONITORING)
2.1 Success Criteria
Due to the possibility that compaction, mechanized clearing, and/or other site
alterations might prevent the temporary wetland impact area from re-attaining
wetland jurisdictional status, the permittee shall provide an annual update on the
wetland areas temporarily impacted by this project. This annual update will
consist of photographs and a brief report on the progress of the temporarily
impacted areas. After three years of monitoring, the permittee shall schedule a
field meeting with DCM, DWQ, and WRC to determine if the temporarily
impacted areas have re-attained jurisdictional wetland status. If at the end of
three years the area has not re-attained jurisdictional wetland status, NC DCM
and the above listed agencies shall determine whether a compensatory wetland
mitigation plan will be required.
2.2 Description of Species
There were no species planted for the temporary impacts. The temporarily
impacted areas were left to revegetate naturally.
2.3 Results of Vegetation Monitoring
Species noted in temporary impact area are as follows: Spartina cynosuroides,
Spartina alterniflora, Scirpus robustus, Sagittaria sp., Panicum sp., Scirpus sp.,
Juncus sp., sweetgum, fennel, ragweed, red maple, Baccharis sp., fern, and
various grasses.
2.4 Conclusions
There were approximately 0.01 acres of temporary impacts on site. By visual
observation, the Town Creek Bridge site shows that natural re-vegetation is
occurring and that the impacted areas are re-attaining jurisdictional wetland
status.
3.0 OVERALL CONCLUSIONS AND RECOMMENDATIONS
NCDOT proposes to discontinue vegetation monitoring at the Town Creek Bridge
site.
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APPENDIX A
SITE PHOTOS
Town Creek Bridge
Photo 1 Photo 2
Photo 3 Photo 4
August 2007