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HomeMy WebLinkAbout20081540 Ver 1_Year 5 Monitoring Report_20101202d �150 ANNUAL MONITORING REPORT YEAR 5 (2010) Contract D05015 -1 LITTLE BUFFALO BUFFER MITIGATION SITE JOHNSTON COUNTY, NORTH CAROLINA Prepared for: NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES ECOSYSTEM ENHANCEMENT PROGRAM RALEIGH, NORTH CAROLINA r� A os stem ar�ement PROGRAM Prepared by: Natural Resource Restoration & Conservation October 2010 r Executive Summary Restoration Systems, LLC (Restoration Systems) has completed riparian buffer restoration at the Little Buffalo Buffer Restoration Site (hereafter referred to as the Site) to assist the North Carolina Ecosystem Enhancement Program (EEP) in fulfilling restoration goals in the region. The Site is located in the southeastern portion of the Neuse River Basin Cataloging Unit 03020201 and within Johnston County, one of the fastest growing counties in the state of North Carolina. The Site consists of a total of approximately 23 acres located on the west side of Bay Valley Road (SR 2159). On -site ditches drain to Little Buffalo Creek which connects with the Little River approximately 2 miles downstream of the Site near the town of Kenly. A total of 17.78 Buffer Mitigation Units, resulting from 19.5 acres of buffer restoration, were completed in April 2006. Prior to restoration, Site land use consisted of agricultural fields utilized for row crop production. On -Site agricultural ditches were characterized by little or no vegetation and unstable banks. Site reforestation encompasses 17.78 acres of riparian buffer. The primary goals of this buffer restoration project focused on reforestation with native species in order to 1) convert active cropland into riparian forest to reestablish forest functions; 2) intercept and assimilate nutrient, pesticide, and sediment runoff from agricultural and development operations before reaching the UT of Little Buffalo Creek and ultimately the Neuse River; 3) improve wildlife quantity and quality; and 4) reduce residential development in an area where existing water, sewer, and electric utilities make the Site a likely candidate for development. Overall, the densities of the five vegetation plots across the Site were above the required 320 stems /acre with an average of 1208 tree stems per acre in the Fifth Monitoring Year (2010). All individual vegetation plots met success criteria and had good species diversity with 5 to 11 Character Tree Species present within each plot. f 0 Table of Contents 1.0 INTRODUCTION ........................................................ ..............................1 2.0 VEGETATION MONITORING PROGRAM ......................... ..............................3 2.1 Vegetation Success Criteria ..................................... ..............................4 2.2 Vegetation Sampling Results and Comparison to Success Criteria .....................5 3.0 CONCLUSIONS .......................................................... ..............................5 4.0 LITERATURE CITED ................................................... ..............................8 LIST OF TABLES Table 1. Character Tree Species ................................................ ..............................4 Table 2. Vegetation Monitoring Data ....................................... ..............................7 Table 3. Summary of Vegetation Plot Results .............................. ..............................8 LIST OF FIGURES Figure 1. Project Location Map .............................................. ..............................2 Figure 2. Monitoring Plan ..................................................... ..............................6 APPENDICES Appendix A. Vegetation Plot Photographs 1.0 INTRODUCTION Restoration Systems, LLC (Restoration Systems) has completed riparian buffer restoration at the Little Buffalo Buffer Restoration Site (hereafter referred to as the Site)- to assist the North Carolina Ecosystem Enhancement Program (EEP) in fulfilling restoration goals in the region. The Site is located in Johnston County, approximately one mile northwest of downtown Kenly and Exit 107 of I -95, north of U.S. Hwy 301, and west of N.C. Hwy 222 (Figure 1). The Site conservation easement encompasses 18.5 acres within NCDWQ sub -basin 03 -04 -06 and Hydrologic Unit #03020201180070, which includes Buffalo Creek, Little Buffalo Creek, and the Little River, a drainage area that encompasses a total of 317 square miles. On -site ditches drain to Little Buffalo Creek which connects with the Little River approximately 2 miles downstream of the Site near the town of Kenly. A Buffer Restoration Plan was completed for the Site in July 2006. The plan outlined methods designed to reforest the entire 19.5 -acre Site with native species in order to help improve water quality within the Neuse River Basin. Prior to implementation of the Restoration Plan, the entire Site was utilized for agricultural practices. The following activities provide 17.78 Buffer Mitigation Units: • Restoration of approximately 17.78 acres of riparian buffer through planting with native forest species • Protection of the Site in perpetuity with a conservation easement which is held by the State of North Carolina The primary goals of this buffer restoration project focused on reforestation with native species in order to 1) convert active cropland into riparian forest to reestablish forest functions; 2) intercept and assimilate nutrient, pesticide, and sediment runoff from agricultural and development operations before reaching the UT of Little Buffalo Creek and ultimately the Neuse River; 3) improve wildlife quantity and quality; and 4) reduce residential development in an area where existing water, sewer, and electric utilities make the Site a likely candidate for development. Little Buffalo Buffer Restoration Site page 1 Annual Monitoring Report October 2010 Year 5 (2010) Restoration Systems, LLC + n;R m � \� ■!` / tz \k 0 ( / k LL ® \ k% } 7 § ® 2 § | ) z J - \ m \ � ! � 5 ƒ > ` ,N&V31d� r _'" aA60 0)A yw * \ � *«~ k & � a �® *� \\ ¢gam § , *a J § \ ® £ ( ee _ amw - � { - ! Bttle Buffalo Buffer ReA m Site page Annual Monitoring Remrt October mm Year 5 (0210) Restoration Systems, LLc The primary goals were accomplished by: 1. Establishing a forested system between the agricultural fields and the receiving waters. By doing this, nutrients, pesticides and sediment inputs into surface waters of the Neuse River Basin were drastically reduced. 2. Eliminating non -point sources of pollution, such as fertilizers, pesticides, and other agricultural materials and providing a vegetated buffer adjacent to on -Site ditches to treat any surface runoff. 3. Improving wildlife habitat by creating a forested riparian corridor. A Buffer Restoration Plan was completed for the project in March 2006 (submitted in July 2006). Upon completion of the detailed plan, Bruton Nurseries and Landscapes planted the Site in April 2006. ESP Associates, P.A. completed an as -built Mitigation Report in August 2006. Information on project managers, owners, and contractors follows: Designer Information ESP Associates, P.A. Adam McIntyre 14001 Weston Parkway Suite 100 Cary, North Carolina 27513 (919) 678 -1070 Owner Information Restoration Systems, L.L.C. George Howard and John Preyer 1101 Haynes Street, Suite 107 Raleigh, North Carolina 27604 (919) 755 -9490 Planting Contractor and Monitoring Performer Information Bruton Natural Systems, Inc. (Previously Bruton Nurseries & Landscapes) Charlie Bruton P.O. Box 1197 Fremont, North Carolina 27830 2.0 VEGETATION MONITORING PROGRAM Monitoring procedures for vegetation were designed in accordance with Stream Mitigation Guidelines (USACE et al. 2003) and the Draft Internal Guidance for Vegetation Monitoring Plans for NCWRP Riparian Buffer and Wetland Restoration Projects (undated). A general discussion of the plant community restoration monitoring program is provided. Monitoring of restoration efforts have been performed for 5 years to ensure success criteria are fulfilled. The locations of monitoring plots are shown in Figure 2. Little Buffalo Buffer Restoration Site page 3 Annual Monitoring Report October 2010 Year 5 (2010) Restoration Systems, LLC During the first five years, vegetation received visual evaluation on a periodic basis to determine the degree of overtopping of planted species by nuisance species. Quantitative sampling was conducted in the early fall. Subsequently, quantitative sampling of vegetation has been performed between September 15 and November 1 of each monitoring year for five years to ensure the vegetation success criteria are achieved. Five sample transects were installed within planted areas of the Site shortly after planting. Efforts were made to ensure that locations of sample plots would not unfairly favor any portion of the buffer site (Figure 2). Each transect is 200 feet in length and 12 feet in width (0.055 acre). Vegetation parameters that were monitored include species composition and species density. Photographs of the vegetation plots are included in Appendix A. 2.1 Vegetation Success Criteria Success criteria have been established to verify that the vegetation component is dependent upon density and growth of "Character Tree Species" (Table 1), as well as recruited seedlings from adjacent forested communities. Character tree species include planted species as well as those observed in forest stands near the Site. Table 1. Character Tree Species Character Tree Species American elm (Ulmus americana) Willow oak (Quercus phellos) Cherrybark Oak (Quercus falcata var. pagodifolia) Chickasaw plum (Prunus angustifolia) Green ash (Fraxinus pennsylvanica) Paw paw (Asimina triloba) River birch (Betula nigra) Red twig dogwood (Cornus sericea) Black gum (Nyssa sylvatica) Silky dogwood (Cornus amomum) Swamp chestnut oak (Quercus michauxii) Southern crabapple (Malus angustifolia) Sycamore (Platanus occidentalis) Sweetbay (Magnolia virginiana) Water hickory(Carya aquatica) Vegetation success criteria for the Site will be the existence of an overall density of at least 320 stems per acre five years after the initial planting. Additional seedlings are expected to be Little Buffalo Buffer Restoration Site page 4 Annual Monitoring Report October 2010 Year 5 (2010) Restoration Systems, LLC recruited to the Site from adjacent forested communities. These individuals may also be counted in the overall success rate for the Site provided they are native hardwood tree species. If vegetation success criteria are not achieved based on average density calculations from combined plots over the entire restoration area, supplemental planting may be performed with Character Tree Species. Supplemental planting will be performed as needed until vegetation success criteria are achieved. No quantitative sampling requirements are proposed for herb assemblages as part of the vegetation success criteria. Visual estimates of the percent cover of herbaceous species will be noted and documented through periodic photographs. Photographs of the vegetation plots are included in Appendix A. 2.2 Vegetation Sampling Results and Comparison to Success Criteria Quantitative sampling of vegetation was conducted in October 2010. Results are provided in Table 2. Vegetation success criteria for Year 5 (320 stems per acre) were exceeded for the 2010 annual monitoring year with 1208 tree stems per acre across the Site. All individual vegetation plots met success criteria and had good species diversity with 5 to 1I Character Tree Species present within each plot. 3.0 CONCLUSIONS In summary, vegetation plots across the Site were above the required 320 stems per acre with an average of 1208 tree stems per acre in the Fifth Monitoring Year (Year 2010). All individual vegetation plots met success criteria and had good species diversity with 5 to 1 I Character Tree Species present within each plot. Little Buffalo Buffer Restoration Site page 5 Annual Monitoring Report October 2010 Year 5 (20 10) - Restoration Systems, LLC TABLE 2 2010 VEGETATION MONITORING DATA AND RESULTS Note: Each plot totals 0.055 acre in size Species* Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Total Stems for Plots 1- 5 Total Stems/Acre Character Tree Species (count toward success) uercus alcata (cherr bark oak) 4 1 4 2 1 0 11 200 Fraxinus pennsylvanica (green ash) 2 3 2 4 0 11 200 Betula ni ra (river birch) 0 0 0 2 0 2 36 N ssa s lvatica (swamp black um ) 0 0 0 0 0 0 0 uercus michauxii (swamp chestnut oak) 1 0 0 2 0 3 55 Ca rya s uatica (water hickory) 0 2 0 0 0 2 36 uercus phellos (willow oak) 10 6 7 1 3 27 491 Cornus sericea (Red Twig dogwood) 0 2 0 0 0 2 36 Prunus an usti olia (chickasaw plum) 1 2 1 0 0 1 1 4 73 Cornus amomum (silky dogwood) 0 0 0 1 0 1 18 Ulmus americana (American elm) 3 0 1 1 1 5 91 Celtis laevi ata (su arberr) 2 0 1 0 0 2 36 Platanus occidentalis (sycamore) 7 5 2 0 2 16 291 Liriodendron tuli i era fellow poplar) 2 3 7 2 3 17 309 Asimina triloba (paw paw) 2 0 3 0 0 5 91 Malus an usti ora (southern crabapple) 1 2 0 1 0 4 73 Magnolia vir iniana (sweetba) 6 1 3 7 1 4 1 21 382 Acer rubrum (red maple) 0 0 0 0 0 0 0 Li uidambar styraciflua (sweet um) 57 32 49 31 30 199 3622 TOTAL STEMS/PLOT 98 61 82 47 44 332 TOTAL STEMS /ACRE 1784 1110 1492 855 801 6042 AVERAGE TOTAL STEMS /ACRE (PLOTS 1 -5) 1208 *Planted species are in bold Little Buffalo Buffer Restoration Site page 7 Annual Monitoring Report October 2010 Year 5 (20 10) Restoration Systems, LLC Table 3. Summary of Vegetation Plot Results Plot Stems/Acre Cou ing Towards Success Criteria Year 1 (2006) Year 2 (2007) Year 3 (2008) Year 4 (2009) Year 5 (2010) 1 1238 1401 1329 1547 1784 2 801 801 910 1019 1110 3 1055 1092 1292 1292 1492 4 1074 710 673 728 855 5 637 874 673 746 801 Average (Plots 1 -5) 961 976 975 1066 1208 4.0 LITERATURE CITED North Carolina Wetlands Restoration Program ( NCWRP). Undated. Draft Internal Guidance for Vegetation Monitoring Plans for NCWRP Riparian Buffer and Wetland Restoration Projects. North Carolina Department of Environment and Natural Resources, Raleigh, North Carolina. United States Army Corps of Engineers (USACE), United States Environmental Protection Agency (USEPA), North Carolina Wildlife Resources Commission ( NCWRC), Natural Resources Conservation Service (NRCS), and North Carolina Division of Water Quality (NCDWQ). 2003. Stream Mitigation Guidelines. State of North Carolina. Little Buffalo Buffer Restoration Site page 8 Annual Monitoring Report October 2010 Year 5 (2010) Restoration Systems, LLC APPENDIX A VEGETATION PLOT PHOTOGRAPHS A 6 � or aw o i . Al i 4 r. / Y M A y'f 1 ,h, 1 . 1 r ..J` Plot 4 r. � t