Annual report for ... Allen Creek mitigation site, Brunswick County, TIP no. B-3116 |
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ANNUAL REPORT FOR 2006 Allen Creek Bridge Mitigation Site Brunswick County TIP No. B-3116 Prepared By: Natural Environment Unit & Roadside Environmental Unit North Carolina Department of Transportation December 2006 TABLE OF CONTENTS SUMMARY ...........................................................................................................1 1.0 Introduction ...............................................................................................2 .1 Project Description .........................................................................2 .2 Purpose .........................................................................................2 .3 Project History ................................................................................2 2.0 Vegetation: ................................................................................................4 .1 Success Criteria .............................................................................4 .2 Description of Species.....................................................................4 .3 Results of Vegetation Monitoring ....................................................4 .4 Conclusions. ...................................................................................4 3.0 Overall Conclusions and Recommendations .............................................4 FIGURES Figure 1 – Site Location Map ...............................................................................3 APPENDICES Appendix A – Site Photos .....................................................................................5 1 SUMMARY The Allen Creek Bridge Mitigation Site is located in Brunswick County. The site was planted in 2004 and was designed as wetland mitigation for impacts associated with bridge project B-3116. The mitigation encompasses approximately 0.24 acres total of wetland restoration. The restoration effort involved re-vegetating the area that was temporarily impacted due to the use of mechanized land clearing. The area that was impacted by mechanized clearing is being monitored to ensure that it re-attains wetland jurisdictional status. The restoration area was re-vegetated with Spartina alterniflora. No hydrologic monitoring is required for this project; however, vegetation monitoring is required for three years. After the third year of monitoring, the Allen Creek Bridge site shows by visual observation that the Spartina alterniflora in the wetland are surviving and that the impacted area is re-attaining wetland jurisdictional status. NCDOT proposes to discontinue vegetation monitoring of this site. 2 1.0 INTRODUCTION 1.1 Project Description The Allen Creek Bridge Mitigation site is located at Bridge No. 56 over Allen Creek on NC 133 (Figure 1). The site consists of approximately 0.24 acres of mitigation for wetland impacts associated with project B-3116. 1.2 Purpose In order for a mitigation site to be considered successful, the site must meet vegetation success criteria. This report details the vegetation monitoring in 2006 at the Allen Creek Bridge mitigation Site. Hydrologic monitoring was not required for the site. 1.3 Project History May 2004 Site planted September 2004 Vegetation Monitoring (1 year) July 2005 Vegetation Monitoring (2 year) August 2006 Vegetation Monitoring (3 year) 3 2.0 VEGETATION: ALLEN CREEK BRIDGE MITIGATION SITE (YEAR 3 MONITORING) 2.1 Success Criteria Success Criteria states that the temporarily impacted area where mechanized clearing occurred shall be replanted using Spartina alterniflora and the temporarily impacted area must re-attain wetland jurisdictional status at the end of three years. 2.2 Description of Species The following wetland specie was planted in the Wetland Reforestation area: Spartina alterniflora, Smooth Cordgrass 2.3 Results of Vegetation Monitoring The impacted area where the mechanized clearing occurred and was re-vegetated is re-attaining wetland jurisdictional status and the planted specie is surviving. Site Notes: Other species noted: big cordgrass, Juncus sp., and Scirpus sp. 2.4 Conclusions There were approximately 0.24 acres total of wetland restoration on site. There were no plots established on the site. By visual observation the Allen Creek Bridge site shows that the planted specie is surviving and that the impacted area is re-attaining wetland jurisdictional status. 3.0 Overall Conclusions and Recommendations NCDOT proposes to discontinue vegetation monitoring at the Allen Creek Bridge Site. 4 5 APPENDIX A SITE PHOTOS Allen Creek Bridge Photo 1 Photo 2 Photo 3 Photo 4 August 2006
Object Description
Description
Title | Annual report for... Allen Creek mitigation site, Brunswick County, TIP no. B-3116 |
Other Title | Allen Creek mitigation site, Brunswick County |
Date | 2006-12 |
Description | 2006 |
Digital Characteristics-A | 472 KB; 8 p. |
Digital Format |
application/pdf |
Related Items | http://worldcat.org/oclc/862942555/viewonline |
Pres File Name-M | pubs_serial_allencreekbridgemitigation200612.pdf |
Full Text | ANNUAL REPORT FOR 2006 Allen Creek Bridge Mitigation Site Brunswick County TIP No. B-3116 Prepared By: Natural Environment Unit & Roadside Environmental Unit North Carolina Department of Transportation December 2006 TABLE OF CONTENTS SUMMARY ...........................................................................................................1 1.0 Introduction ...............................................................................................2 .1 Project Description .........................................................................2 .2 Purpose .........................................................................................2 .3 Project History ................................................................................2 2.0 Vegetation: ................................................................................................4 .1 Success Criteria .............................................................................4 .2 Description of Species.....................................................................4 .3 Results of Vegetation Monitoring ....................................................4 .4 Conclusions. ...................................................................................4 3.0 Overall Conclusions and Recommendations .............................................4 FIGURES Figure 1 – Site Location Map ...............................................................................3 APPENDICES Appendix A – Site Photos .....................................................................................5 1 SUMMARY The Allen Creek Bridge Mitigation Site is located in Brunswick County. The site was planted in 2004 and was designed as wetland mitigation for impacts associated with bridge project B-3116. The mitigation encompasses approximately 0.24 acres total of wetland restoration. The restoration effort involved re-vegetating the area that was temporarily impacted due to the use of mechanized land clearing. The area that was impacted by mechanized clearing is being monitored to ensure that it re-attains wetland jurisdictional status. The restoration area was re-vegetated with Spartina alterniflora. No hydrologic monitoring is required for this project; however, vegetation monitoring is required for three years. After the third year of monitoring, the Allen Creek Bridge site shows by visual observation that the Spartina alterniflora in the wetland are surviving and that the impacted area is re-attaining wetland jurisdictional status. NCDOT proposes to discontinue vegetation monitoring of this site. 2 1.0 INTRODUCTION 1.1 Project Description The Allen Creek Bridge Mitigation site is located at Bridge No. 56 over Allen Creek on NC 133 (Figure 1). The site consists of approximately 0.24 acres of mitigation for wetland impacts associated with project B-3116. 1.2 Purpose In order for a mitigation site to be considered successful, the site must meet vegetation success criteria. This report details the vegetation monitoring in 2006 at the Allen Creek Bridge mitigation Site. Hydrologic monitoring was not required for the site. 1.3 Project History May 2004 Site planted September 2004 Vegetation Monitoring (1 year) July 2005 Vegetation Monitoring (2 year) August 2006 Vegetation Monitoring (3 year) 3 2.0 VEGETATION: ALLEN CREEK BRIDGE MITIGATION SITE (YEAR 3 MONITORING) 2.1 Success Criteria Success Criteria states that the temporarily impacted area where mechanized clearing occurred shall be replanted using Spartina alterniflora and the temporarily impacted area must re-attain wetland jurisdictional status at the end of three years. 2.2 Description of Species The following wetland specie was planted in the Wetland Reforestation area: Spartina alterniflora, Smooth Cordgrass 2.3 Results of Vegetation Monitoring The impacted area where the mechanized clearing occurred and was re-vegetated is re-attaining wetland jurisdictional status and the planted specie is surviving. Site Notes: Other species noted: big cordgrass, Juncus sp., and Scirpus sp. 2.4 Conclusions There were approximately 0.24 acres total of wetland restoration on site. There were no plots established on the site. By visual observation the Allen Creek Bridge site shows that the planted specie is surviving and that the impacted area is re-attaining wetland jurisdictional status. 3.0 Overall Conclusions and Recommendations NCDOT proposes to discontinue vegetation monitoring at the Allen Creek Bridge Site. 4 5 APPENDIX A SITE PHOTOS Allen Creek Bridge Photo 1 Photo 2 Photo 3 Photo 4 August 2006 |
OCLC number | 862942555 |