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HomeMy WebLinkAbout20031064 Ver 1_Mitigation Report_20110610Monitoring Firm: Ie- UuarufK /`�tf,S /fAal 0 SEPI COsmucT10\ 1025 Wade Avenue Raleigh, NC 27605 Phone (919) 789 -9977 Project Manager: Phillip Todd ptodd @sepiengineering.com 03 - p6� TABLE OF CONTENTS MONITORING SUMMARY ........................................................................................ ............................... 1 METHODOLOGY........................................................................................................ ............................... 3 VegetationMethodology ............................................................................................ ..............................3 StreamMethodology ................................................................................................... ..............................3 Longitudinal Profile and Plan View ...................................................................... ............................... 3 PermanentCross Sections ..................................................................................... ............................... 3 PebbleCounts ........................................................................................................ ............................... 3 PhotoDocumentation .................................................................................................. ..............................3 REFERENCES............................................................................................................... ..............................5 APPENDICIES Appendix A: Project Vicinity Map and Background Tables Figure 1 — Project Location Map Table 1. Project Restoration Components Table 2. Project Activity and Reporting History Table 3. Project Contact Table Table 4. Project Attribute Table Appendix B: Visual Assessment Data Figure 2a -c: Current Condition Plan View (CCPV) Table 5. Visual Stream Morphology Stability Assessment Table Table 6. Vegetation Condition Assessment Table Photos: Stream Stations Photos: Vegetation Plots Appendix C. Vegetation Plot Data Table 7: Vegetation Plot Mitigation Success Summary Table Appendix D: Stream Assessment Data Figure: Cross - sections with annual overlays Figure: Longitudinal profiles with annual overlays Figure: Pebble count plots with annual overlays Table 8: Baseline Stream Data Summary Table Table 9: Monitoring — Cross - Section and Reach Morphology Data Table Appendix E: Hydrologic Data Table 10: Verification of Bankfull Events UT to Tar River EEP Project #234 April 2011 SEPI Engineering & Construction Final Monitoring Report Monitoring Year 5 of 5 MONITORING SUMMARY The Unnamed Tributary to Tar River Restoration Site is located within the town of Louisburg, Franklin County, North Carolina. The site was constructed between January 2005 and June 2005. The Priority II restoration involved the conversion of 1,792 linear feet of impaired channel into 1,937 linear feet with improved pattern, dimension, and profile. Rock grade control vanes and root wads were incorporated for aquatic habitat enhancement and bed and bank stability. A variable width riparian buffer was planted on either side of the stream with native vegetation in December 2005. This project has the following goals and objectives: • Provide a stable stream channel that neither aggrades nor degrades while maintaining its dimension, pattern, and profile with the capacity to transport its watershed's water and sediment load. • Improve water quality and reduce further property loss by stabilizing eroding stream banks. • Reconnect the stream to its floodplain and /or establish a new floodplain at a lower elevation. • Improve aquatic habitat with the use of natural material stabilization structures such as root wads, cross - vanes, woody debris, and a riparian buffer. • Provide aesthetic value, wildlife habitat, and bank stability through the creation of a riparian zone. • Stabilize and enhance the tributary and small drainage that enters the site. During 2009, two areas of bare /eroding terrace were observed along the right side (facing downstream) of the project. The first area (Station 14 +45) has fully healed. The second area (Station 16 +40) continues to remain bare and does not appear to be stabilizing. Dense loblolly pine (Pinus taeda) thickets that are growing in the project corridor are a concern because they are suppressing the growth of more ideal late successional species along the middle sections of the project (see Appendix B Vegetation Problem Area Plan Views). The planted stem densities for all the Vegetation Plots (VP), except VP 1, 2 and 6, were below the Monitoring Year 5 goal of 260 stems /acre. Planted stem density across all vegetation plots in Monitoring Year 5 was 147 stems per acre. It should be noted that there were several species for which `volunteer' individuals were noted in all vegetation plots. With the inclusion of these `volunteers,' all of the vegetation plots exceed the Monitoring Year 5 stem density goal. Noted volunteer species include: Alnus serrulata (VP 6), Baccharis halimifolia (VP 1 -9), Betula nigra (VP 2, 7), Cephalanthus occidentalis (VP 6), Fraxinus pennsylvanica (VP 4 -9), Liquidambar styraciflua (VP 1,2, 6 -9), Liriodendron tulipifera (VP 6), Myrica cerifera (VP 9), Platanus occidentalis (VP 7,8), Pinus taeda (VP 1 -8), Quercus phellos (VP 6), Quercus pagoda (VP 3,5), Quercus spp. (VP 1 -3), Prunus caroliniana (VP 1, 2, 6), Prunus serotina (VP 1,2, 4), and Ulmus rubra (VP 1). The site is scheduled for supplemental planting in 2011. Most of the UT to Tar River project reach appears to have remained stable through Monitoring Year 5. Overall, only I% of the total bank length exhibited bank instability in the form of mass wasting in 2010. However, two previously mentioned sections of bank instability remain as a concern. At the top of the reach, upslope of the left bank, the terrace has experienced mass wasting just downstream of the culvert outlet. This terrace erosion is encroaching on Burnette Road. Also there is a section of mass wasting on the right bank just downstream of here (Station 10 +38). In addition, it was found that the culvert outlet pool, that used to exist as the first channel unit along the profile below the culvert at the upstream end of the reach, is completely filled in with sediment and now exists as riffle habitat. Also there is a section of Ut Tar River SEPI Engineering & Construction EEP Project #234 1 Final Monitoring Report April 2011 Monitoring Year 5 of 5 mass wasting of the left bank that likely lends to excess sedimentation just downstream of the confluence with the stormwater tributary (Station 24 +19) that drains the adjacent shopping center. This tributary probably has very flashy flows during storm events due to the high percentage of impervious area within its watershed, and is presumably the main agent contributing to the problems just downstream. The sedimentation and bank instability areas have been noted as concerns since 2007. The sediment contributing to these areas probably came from a combination of an upstream source and isolated sections of bank instability along the project. it appears that the stream pattern remained consistent between the monitoring years. The profile appears to have remained as stable as can be expected for a sand bed stream, with the exception of some apparent deposition within the first 100 feet of channel and the complete filling in of the culvert outlet pool at the head of the reach, turning it into a riffle (see longitudinal profile overlay). A portion of this region of aggradation has scoured and formed a pool. The overall dimension of the stream appears to have remained consistent with minor enlargement in cross sections 4 and 5. The structures appear to be in good physical condition. Summary information /data related to the occurrence of items such as beaver or encroachment and statistics related to performance of various project and monitoring elements can be found in the tables and figures in the report appendices. Narrative background and supporting information formerly found in these reports can be found in the mitigation and restoration plan docwnents available on EEPs website. All raw data supporting the tables and figures in the appendices is available from EEP upon request. Ut Tar River SEPI Engineering & Construction EEP Project #234 2 Final Monitoring Report April 2011 Monitoring Year 5 of 5 METHODOLOGY Vegetation Methodology The following methodology was used for the planted woody stem count. The configuration of the vegetation plots was marked out with tape to measure 10 meters by 10 meters (or equivalent to 100 square meters) depending on buffer width. The planted material in the plot was marked with flagging. The targeted vegetation was then identified by species and a tally of each species was kept and recorded in a field book. Stream Methodology The project monitoring for the stream channel included a longitudinal survey, cross - sectional surveys, problem area identification, and photo documentation. The specific methodology for each portion of the stream monitoring is described in detail below. Longitudinal Profile and Plan View A longitudinal profile was surveyed with a Nikon DTM -520 Total Station, prism, and a TDS Recon Pocket PC. The heads of features (i.e. riffles, runs, pools, and glides) were surveyed, as well as the point of maximum depth of each pool, boundaries of problem areas, and any other significant slope- breaks or points of interest. At the head of each feature and at the maximum pool depth, thalweg, water surface, edge of water, left and right bankfull, and left and right top of bank (if different than bankfull) were surveyed. All profile measurements were extracted from this survey, including channel and valley length and length of each feature, water surface slope for each reach and feature, bankfull slope for the reach, and pool spacing. This survey also was used to draw plan view figures with Microstation v8 (Bentley Systems, Inc., Exton, PA). Stationing was calculated along the thalweg. All pattern measurements (i.e., meander length, radius of curvature, belt width, meander width ratio, and sinuosity) were extracted from ,J the plan view. Permanent Cross Sections Five permanent cross sections (three riffles, one pool, and one run) were surveyed. The beginning and end of each permanent cross section were originally marked with a wooden stake and conduit. Cross sections were installed perpendicular to the stream flow. Each cross section survey noted all changes in slopes, tops of both banks (if different from bankfull), left and right bankfull, edges of water, thalweg and water surface. The cross sections were then plotted and Monitoring Year 5 monitoring data was overlain on data from all previous monitoring years. All dimension measurements (i.e., bankfull width, floodprone width, bankfull mean depth, cross sectional area, width -to -depth ratio, entrenchment ratio, bank height ratio, wetted perimeter, and hydraulic radius) were extracted from these plots and compared to all previous monitoring data. Pebble Counts Based on the fact that UT Tar River is a sand bed stream, it was determined that pebble counts were unnecessary as they would fail to detect changes in the amounts of fine sediments in the bed load. Therefore, pebble counts were not performed for Monitoring Year 5. Photo Documentation Permanent photo points were established during Monitoring Year 1. Two photographs (facing upstream and facing downstream) were taken at each photo point with a digital camera. A set of three photographs were taken at each cross - section (facing upstream, facing downstream, and facing the channel). A representative photograph of each vegetation plot was taken at the designated corner of the vegetation Ut Tar River SEPI Engineering & Construction EEP Project #234 3 Final Monitoring Report April 2011 Monitoring Year 5 of 5 plot and in the same direction as the Monitoring Year 1 photograph. Photos were also taken of all significant stream and vegetation problem areas. Ut Tar River SEPI Engineering & Construction EEP Project #234 4 Final Monitoring Report April 2011 Monitoring Year 5 of 5 REFERENCES Earth Tech. January 2007. Unnamed Tributary to Tar River Stream Restoration Louisburg, Franklin County, North Carolina Year 1 Monitoring Report. DeLorme. 1997. The North Carolina Atlas and Gazateer. Harman, W.H., et al. 1999. Bankfull Hydraulic Geometry Relationships for North Carolina Streams. AWRA Wildland Hydrology Symposium Proceedings. Edited by D.S. Olson and J.P. Potyondy. AWRA Summer Synposium. Bozeman, MT. North Carolina Ecosystem Enhancement Program. September 2005. Content, Format and Data Requirements for EEP Monitoring Reports. Rosgen, D.L. 1994. A Classification of Natural River. Catena, Volume 22: 166 -169, Elsevier Science, B.V. Amsterdam. SEPI Engineering Group. 2007. UT to Tar River Final Monitoring Report, Year 2 of 5. SEPI Engineering Group. 2008. UT to Tar River Final Monitoring Report, Year 3 of 5. SEPI Engineering Group. 2009. UT to Tar River Final Monitoring Report, Year 4 of 5. U.S. Department of Army, Corps of Engineers. 2003. Stream Mitigation Guidelines. http: / /www.saw.usace.army.miI /wetlands / Mitigation /stream_m itigation.htmI Ut Tar River SEPI Engineering & Construction EEP Project 4234 5 Final Monitoring Report April 2011 Monitoring Year 5 of 5 Appendix A Project Vicinity Map and Background Files Take US1 /401 north to the 11401 split and continue on US 401 Pass through R l esville and into Louisburg. Turn right onto NC 39 south and an immediate left onto Burnett Rd adjacent to project. hNIZA 1� s CO tx U 2 R E X N PROJECT LOCATION van ceWvvp rrenHaIifa Granvill Va 2,000 1,000 0 2,000 4,000 D u r h a ash Feet Wake ilso Pro'ect Ut Tar River (EEP #234) Year 5 (2010) Monitoring, Franklin County, North Carolina April 2011 CC ' 'S E h I � t Figure 1. Project Location Ma I u cu�1n�111 b J P Table 1. Project Restoration Components UT Tar River Stream Mitigation Site /Project No. 234 L � Data Collection Complete Actual Completion Date Restoration Plan NA NA June 2003 Final Design - 90% NA NA Unknown Construction NA NA 7/26/2005 Temporary S &E and Permanent seed mix applied NA NA Throughout Construction Containerized, B &B, livestake planting NA NA 12/22/2005 9L a Aril 2006 Aril 2006 May 2006 Year 1 Monitoring Fall 2006 January 2007 2007 Year 2 Monitoring 9 --January September 2007 December 2007 Year 3 Monitoring Fall 2008 October 2008 November 15, 2008 UT to Tar 1,792 1 Restoration P11 1,937.13 10+00— 10+00— November 20, 2010 River 29 +37.13 29 +90.65 Table 2. Project Activity and Reporting History UT to Tar River /EEP Project No. 234 Activity or Report Scheduled Completion Data Collection Complete Actual Completion Date Restoration Plan NA NA June 2003 Final Design - 90% NA NA Unknown Construction NA NA 7/26/2005 Temporary S &E and Permanent seed mix applied NA NA Throughout Construction Containerized, B &B, livestake planting NA NA 12/22/2005 Mitigation Plan / As -built (Year 0 Monitoring - baseline ) Aril 2006 Aril 2006 May 2006 Year 1 Monitoring Fall 2006 January 2007 2007 Year 2 Monitoring Fall 2007 --January September 2007 December 2007 Year 3 Monitoring Fall 2008 October 2008 November 15, 2008 Year 4 Monitoring Fall 2009 October 2009 November 15, 2009 Year 5 Monitoring Fall 2010 October 2010 November 20, 2010 Table 3. Project Contact Table UT to Tar River/EEP Project No. 234 Designer Earth Tech 701 Corporate Center Drive Suite 475 Raleigh, NC 27607 Construction Contractor McQueen Construction 619 Patrick Road Bahama, NC 27503 Carolina Environmental Contracting, Inc. Planting Contractor P.O. Box 1905 Mount Airy, NC 27030 Erosion Control Solutions Seeding Contractor 5508 Peakton Dr. Raleigh, NC 27614 2006 Monitoring Performers Earth Tech 701 Corporation Center Drive, Suite 475 Raleigh, NC 27607 SEPI Engineering Group 2007 -2010 Monitoring 1025 Wade Avenue Performer Raleigh, NC 27605 Phillip Todd (919 ) 789 -9977 Stream Monitoring POC Andy Kiley 919) 573 -9914 Vegetation Monitoring POC Phil Beach (919) 573 -9936 Wetland Monitoring POC N/A Table 4. Project Background Table UT to Tar River /EEP Project No. 234 Project County Franklin County, NC Drainage Area 0.61 square miles Drainage impervious cover estimate ( %) >30% Stream Order l st order Physiographic Region Piedmont Ecoregion Northern Outer Piedmont Rosgen Classification of As -Built C Cowardin Classification NA Dominant Soil Types Chewacla and Wehadkee loam; Wedowee- Urbanland_Udorthents complex C5 UT Lake Lynn (Wake), C4 UT Hare Snipe Creek ( Wake) Reference site ID USGS HUC for Project 03020101 USGS HUC for References 03020201 NCDWQ Sub -basin for Project 03 -03 -01 NCDWQ Sub -basin for References 03 -04 -02 NCDWQ Classification for Project Not Assigned NCDWQ Classification for Reference UT Lake Lynn: B -NSW; UT Hare Snipe Creek: C -NSW Any portion of any project segment 303D listed? No Any portion of any project segment upstream of a 303D listed segment? No Reasons for 303D listing or stressor N/A % of project easement fenced <5 % of project easement demarcated with bollards if fencing absent 0 Appendix B Visual Assessment Data _.I Xl�o ,I im 1 r ,4 a> C O O C 0 U L r 0 z G o U u C C Y 1 ` C Ci Ci bfl l� C O O O N O ro C O C O O _ O ¢ N � Q L Y. N y 'O ZMM U N 0. 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Ar AV Appendix C Vegetation Plot Data \ \\ f % \\ w \\ cu \{ ( �\ 0 &» �\ \ E co ƒ) %\ SO rzz 2m %= U) `\\\ � ®vim / \ \{ \ \ \.2 E )\ \/ )kkC, Q) i x - r \j }\ \ \� \ -0 ;SA }s §= ±\ /) \)�\\ 9p4 % &E\ $� ®E ,4 ul >I/ % §� \ § f \\f (2 \[ \ / \\ jU- { } / / / \ \ \ \ \ \ % \ % \ cn LO a c e= c = m a c e= g/ )/ CD )/ ~2 »e m} ° o o c = e CO r c r R 2 m a c= e == Cl) r o r G e ƒ} § \2 E §0 2 / { / c Cl) m 'T r w % _ % = 7 e 2 / $ CD co CL HE. \ c a co \ § f r =y §� 2 co CD cli r— co ] \ \ \ [ m \ \ o � \ / $ , \ m \ R a _ cc Q) ƒ CL / k \ / \ ( \ \ § ( ( m \ \ \ § ( / j f / \ / i \ / � \ 3 F- § / § 7 \ \\ f % \\ w \\ cu \{ ( �\ 0 &» �\ \ E co ƒ) %\ SO rzz 2m %= U) `\\\ � ®vim / \ \{ \ \ \.2 E )\ \/ )kkC, Q) i x - r \j }\ \ \� \ -0 ;SA }s §= ±\ /) \)�\\ 9p4 % &E\ $� ®E ,4 ul >I/ % §� \ § f \\f (2 \[ \ / \\ jU- Appendix D Stream Survey Data co o L N v � N r } y N cc > M _ 0 d V CO) N CO) N N O 0 U L U OL S E i I I I I I I I I f I I i i i i I I I I F I I! 0 In CO M r N M M I: N M _ M r N CO M I, N M M In M CO CO M N N N N N O O O O O M M M M M c+D aO a0 N N N N N N N N N N N N N N N N N N r- �'- 4994) uoneA819 S9L O n o 0 o OSL 0 N 0 O 0 O 0 0 O O 0 O w N N N N N O M O M N N N N 91'L N v o N M v `m OK m m m m cc 0£l 9U OZL SLL OLL 90L OOL 56 06 99 ^• 09 v SL OL 59 09 99 I OS I Y I I 917 m. 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