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HomeMy WebLinkAbout20071890 Ver 1_Year 1 Monitoring Report_2009112061 -18�� Blockhouse Creek Restoration Project Year 1 Monitoring Report Polk County, North Carolina Monitoring Firm: irm: Michael Baker Engineering, Inc. (Baker) Monitoring Firm POC: Micky Clemmons O� Prepared for: North Carolina Ecosystem Enhancement Program ( NCEEP) t"qhwstem 'ai' Cunent PR0C.)4AJA NCEEP Project Manager: Guy Pearce Report Prepared By: Michael Baker Engineering, Inc. 797 Haywood Road, Suite 201 Asheville, NC 28806 Contract Number: D06027 -A Date Submitted: November 2009 FINAL RECEIVED NOV 2,0 2009 NC ENHANCEMENT ECOSYSTEM Table of Contents EXECUTIVE SUMMARY ........................................................................... .............................IV 1.0 PROJECT BACKGROUND .............................................................. ............................... 1 1.1 PROJECT GOALS AND OBJECTIVES .................................................................................. ..............................1 1.2 PROJECT STRUCTURE ...................................................................................................... ..............................1 1.3 PROJECT LOCATION ........................................................................................................ ..............................3 1.4 HISTORY AND BACKGROUND .......................................................................................... ..............................5 1.5 MONITORING PLAN VIEW ............................................................................................... ..............................8 2.0 YEAR 1 PROJECT CONDITION AND MONITORING RESULTS ....................... 10 2.1 VEGETATION ASSESSMENT ............................................................................................ .............................10 2.1.1 Description of Vegetative Monitoring ...................................................................... .............................10 2.1.2 Vegetative Success Criteria ...................................................................................... .............................10 2.1.3 Vegetation Observations and Results ....................................................................... .............................12 2.1.4 Vegetation Problem Areas ........................................................................................ .............................12 2.1.5 Vegetation Photographs ........................................................................................... .............................12 2.2 STREAM ASSESSMENT .................................................................................................... .............................13 2.2.1 Description of Geomorphic Monitoring ................................................................... .............................13 2.2.2 Morphometric Success Criteria ................................................................................ .............................13 2.2.3 Morphometric Results ............................................................................................... .............................14 2.2.4 Hydrologic Criteria .................................................................................................. .............................15 2.2.5 Hydrologic Monitoring Results ................................................................................. .............................15 2.2.6 Stream Problem Areas .............................................................................................. .............................15 2.2.7 Stream Photographs ................................................................................................. .............................16 2.2.8 Stream Stability Assessment ...................................................................................... .............................17 2.2.9 Quantitative Measures Summary Tables .................................................................. .............................17 MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT -FINAL Figures Figure 1 Project Vicinity Map Figure 2 Restoration Summary Map Appendices Tables Table 1 Project Restoration Components Table 2 Project Activity and Reporting History Table 3 Project Contacts Table Table 4 Project Background Table Table 5 Rooted Trees, Live Stakes and Seeding Planted in the Riparian Zone of Blockhouse Creek Figures Figure 1 Project Vicinity Map Figure 2 Restoration Summary Map MICHAEL BAKER ENGINEERING, INC. III BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT -FINAL Appendices Appendix A Vegetation Data 1. Vegetation Survey Data Tables 2. Vegetation Monitoring Plot Photos Appendix B Geomorphic Data 1. Qualitative Visual Stability Assessment 2. Baseline Morphology and Hydraulic Summary 3. Morphology and Hydraulic Monitoring Summary 4. Problem Areas Plan View 5. Annual Overlays of Longitudinal Plots _ 6. Annual Overlays of Cross - section Plots 7. Annual Overlays of Pebble Count Frequency Distribution Plots 8. Reference Station Photo Log Appendix C Year 1 Monitoring Plan Sheets Appendix D U.S. Army Corps of Engineers Site Review Comments - October 2009 MICHAEL BAKER ENGINEERING, INC. III BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT -FINAL EXECUTIVE SUMMARY This Annual Report details the monitoring activities during the 2009 growing season (Monitoring Year 1) on the Blockhouse Creek Restoration Site ( "Site "). This Annual Monitoring Report presents data on stream geometry, stem count data from vegetation monitoring stations, and discusses any observed tendencies relating to stream stability and vegetation survival success. The Site is currently on track to meet the hydrologic, vegetative, and stream success criteria specified in the Blockhouse Creek Restoration Plan. The Blockhouse Creek Site ( "Site ") was restored through a full delivery contract with the North Carolina Ecosystem Enhancement Program (NCEEP). Prior to restoration, stream and riparian functions on the Site were impaired as a result of historic agricultural land use practices as well as culvert installations that took place during the construction of the adjacent equestrian and nature center and Interstate 26. The streams on the Site were channelized and riparian vegetation had been cleared. Blockhouse Creek also exhibited instability as a result of improperly installed culverts. As -built surveys conducted in the Summer of 2008 indicate that 5,875 linear feet of stream were restored on Blockhouse Creek and two unnamed tributaries (UT1 and UT2), to Blockhouse Creek. A total of ten vegetation monitoring plots 100 square meters (m2) (join x l Om) in size were used to predict survivability of the woody vegetation planted on -site. The Year 1 vegetation monitoring indicated an average survivability of 620 stems per acre. The data shows that the Site is on track for meeting the minimum success interim criteria of 320 trees per acre by the end of Year 3 and the final success criteria of 260 trees per acre by the end of Year 5. With the exception of slight aggradation in isolated reaches, cross - section surveys indicate the stream dimension of Blockhouse Creek and its tributaries remained stable during Year 1. Overall, in- stream structures also remained stable during Year 1. However, the longitudinal profile for Reach 2 of Blockhouse Creek above I -26 reflects the presence of a sandbag weir at station 14 +31 which has backed up water for most of this reach. Baker has contacted FENCE regarding the removal of this weir. The lower reach of Blockhouse Creek immediately downstream of the Interstate 26 and downstream of the confluence with UT2 exhibited some aggradation, most likely from sand and gravel coming out of the I- 26 box culverts. UT did not exhibit any significant profile changes. As noted in the previous monitoring report, UT2 did not contain flow during the As -built survey. However, UT2 did contain water during Year 1 monitoring; the longitudinal profile survey reflects generally stable conditions along the channel. Compared with the as -built survey, UT2 appears to have degraded slightly above and below a wetland complex adjacent to the project area. However, it is likely that the "downcutting" is attributable to the small tributary experiencing periodic flow sufficient to flush the tributary of excess siltation present at the time of the as -built survey. The channel slope on UT2 was designed to be gradual in the vicinity of the wetland as compared to other sections of UT2 to avoid impacts to the hydrology of the site. As a consequence, there is little change in the profile in the vicinity of the wetland when compared to the As- built survey. Visual observations and cross - sections confirm channel overflow in areas, although flow was not sufficient to be recorded on a crest gauge located on UT2. Based on the overall stability of the channel, no maintenance or repair work of channel profile is required beyond the removal of a downed tree at cross - section 14. Bank repair work was performed on one isolated section in Reach 4 of Blockhouse Creek where soil subsidence had created a "sink hole" behind rootwads near cross - section 8. The unstable area, was approximately 5 feet in length, and was the result of soil erosion beneath a rootwad that was previously installed. Bank repairs were minor and consisted of placing rock in the base of the hole, covering this with a geotextile, backfilling, re- seeding and matting the area. MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT -FINAL The on -site crest gauges did not record any bankfull flow events across the project area during Year 1 of the post construction monitoring period. The site will continue to be periodically monitored for the occurrence of bankfull events which will be included in future monitoring reports. Table 1 summarizes site conditions before and after restoration as well as what was predicted in the restoration plan. The stream mitigation units developed on the project exceed the number of units that Baker contracted with the North Carolina Ecosystem Enhancement Program (NCEEP) to provide. The monitoring plan and Year 1 monitoring data are discussed in Sections 2.1 through 2.5 of this report. The 2009 stream cross section data presented in this Report were collected during April and May 2009. Vegetation monitoring plots were assessed in June 2009. MICHAEL BAKER ENGINEERING, INC V BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT -FINAL 1.0 PROJECT BACKGROUND The Blockhouse Creek restoration project involved restoration, enhancement or preservation of 6,305 linear feet (LF) of four on -site streams: Blockhouse Creek and three smaller unnamed tributaries (UTs) identified in the project as UTI, UT2, and UT3. Blockhouse Creek is a "blue- line" stream, as shown on the USGS topographic quadrangle for the site, and is considered to be perennial based on field evaluations using NCDWQ stream assessment protocols. The three tributaries were all identified as perennial during initial project scoping, although UT2 and UT3 have little or no flow during extreme drought conditions as observed during previous summers. A total of 8.6 acres of stream and riparian buffer are protected through a conservation easement. 1.1 Project Goals and Objectives The goals for the restoration project are as follows: • Create geomorphically stable conditions on Blockhouse Creek. • Restore hydrologic connections between creek and floodplain. • Improve the water quality of Blockhouse Creek. • Improve aquatic and terrestrial habitat along the project corridor. To achieve these goals, design objectives of the project included: • Restoration or enhancement of channel dimension, pattern and profile; • Improvements to water quality in the Blockhouse Creek watershed through nutrient removal, sediment removal, improved recreational opportunities, streambank stability, and erosion control; • Improved water quantity /flood attenuation through water storage and flood control, reduction in downstream flooding due to the reconnection of stream and floodplain, improved ground water recharge, and improved and restored hydrologic connections; • Enhancement of aquatic and terrestrial habitats through improved substrate and instream cover, addition of woody debris, reduction in water temperature due to shading, restoration of terrestrial habitat, increase of spatial extent of natural area, and improved aesthetics. 1.2 Project Structure Restoration of site hydrology involved the restoration of natural stream functions to impaired reaches on the site. The streams in their pre - project condition were channelized and, as a result, were highly incised. Because of the extent of the incision, a Rosgen Priority I restoration, which would connect the stream to the abandoned floodplain (terrace), would not have been feasible without extending the project reach several thousand feet upstream and significantly altering the channel profile. However, there was sufficient space in areas within the project boundaries to implement a Rosgen Priority II restoration by excavating the floodplain and creating a new meandering channel. With the exception of a small section of UT2, the restored streams were designed as Rosgen "E" channels with design dimensions based on those of reference parameters. The upper project reach on UT2 was designed as an "E" channel while the lower section of the project reach (approximately 200 feet) was designed as a `B" channel. The preserved reach on UT3 was determined to be a `B" channel that transitions to an "E" channel. The design for restored sections of the streams involved the construction of new, meandering channels across excavated floodplains. This new channel system was constructed through grassed fields. The MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL streams through the site were restored to a stable dimension, pattern, and profile. Total stream length across the project was increased from approximately 6,191 LF to 6,305 LF. The design allows stream flows larger than bankfull flows to spread onto the floodplain, dissipating flow energies and reducing streambank stress. Instream structures were used to control streambed grade, reduce streambank stress, and promote bedform sequences and habitat diversity. Rootwad and log vane structures will protect streambanks and promote habitat diversity in pool sections. Constructed riffles were used to promote both hydraulic and habitat heterogeneity to the channel. Where grade control was a design consideration, constructed riffles were installed to provide long -term stability. Streambanks were stabilized using a combination of erosion control matting, bare -root planting, transplants, and geolifts. Transplants provided immediate living root mass to increase streambank stability and create shaded holding areas for fish and other aquatic biota.' Native vegetation was planted across the site, and the entire restoration site is protected through a permanent conservation easement. Table 1 summarizes project data for each reach and restoration approaches used. Table Pro,ect Restoration Components � �F,�„ Blockhouse Greek:Restoratton_Pro .a;a.: � s_v r d .,�., _ �;;'�;, ^.,,•� >�E: ~�•t:: 4,..,>... sy„r y.r. �;y' �Q �...s � - �� ..� �_. '�__ �:>4_:= lmikigik?w:•,1 x:�g �•: •-. -�� -, ��•�'i;- • -'-. Stattoritri iFF ` Comtrietit,� ,'; ;�.a:; .Qr..�0 ,. Blockhouse Cr. Meandering channel Reach 1 887 LF R P2 1070 LF 1.0 1,070 0 +00 -10 +70 construction; excavation of floodplain Blockhouse Cr. Meandering channel Reach 2 340 LF R P2 340 LF 1.0 340 10 +70 -14 +14 construction; excavation of floodplain Constraints prevented Blockhouse Cr. restoration; bankfull 950 LF E I 950 LF 1.5 633 14 +34 -25 +44 benches established, Reach 3 structures installed, pattern stabilized. Blockhouse Cr. Meandering channel 1,821 LF R P2 1,780 LF 1.0 1,780 28 +37 -46 +15 construction; floodplain Reach 4 excavation Meandering channel UT 1 523 LF R P2 580 LF 1.0 580 0 +00 -5 +80 construction; floodplain excavation Was incised at lower end, upper 1000 LF UT 2 1,240 LF R P2 1,155 LF 1.0 1,155 0 +00 -11 +74 realigned to a more stable pattern with only minor floodplain grading No channel alteration UT 3 430 LF P - 430 LF 5.0 86 0 +004+30 (preservation) �Mtttglon,Lllntummattons�, t\ vJ , Stream Riparian Wetland Nonriparian Total (LF) (Ac) Wetland (Ac) Wetland (Ac) Buffer (Ac) Comment 5,644 NA NA NA 8.6 MICHAEL BAKER ENGINEERING, 'INC BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL 1.3 Project Location The Blockhouse Creek mitigation site is located on the Foothills Equestrian Nature Center (FENCE) property approximately three miles east of Tryon, in Polk County, North Carolina. From Asheville take I -26 South to South Carolina Exit #1 and turn right toward Landrum, S.C. Go 1.5 miles, and turn right onto Bomar Road (look for the Land Mart on the corner). Go one short block and turn right onto Prince Road. After 1.7 miles, turn left onto Hunting Country Road, just before the I -26 bridge. Go .5 mile to the FENCE entrance on the left or another. I miles (going under 1 -26) to the second entrance on the right. The Blockhouse Creek site starts at near the horse stables accessed through the first entrance and below the first culvert under the steeplechase course. Figure 1 illustrates the physical location of the project site. MICHAEL BAKER ENGINEERING, INC BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL 401� eVy 60 Polk Co. 108' 74 Tryon' NO RTH CAROLINA ... . ..... i SOUTH CAROLINA ------- Secondary Roads Counties Municipal boundaries 1`a�iasi fist N 0 1 2 Mi les Figure 1.1 Project Location Map I I Polk County, NC Blockhouse Creek I Restoration Project MICHAEL BAKER ENGINEERING, INC BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT— FINAL 1.4 History and Background The Blockhouse Creek Restoration site is located within the Foothills Equestrian Nature Center (FENCE), approximately three miles east of Tryon, in Polk County, North Carolina. The project site is situated in the Broad River Basin, within North Carolina Division of Water Quality (NCDWQ) sub -basin 03 -08 -06 and United States Geologic Survey (USGS) hydrologic unit 03050105150020. Since the late 1980s, the project area has been used as an equestrian/recreational complex. Surrounding lands are currently used for pasture land, hay production and residential use. Prior to the establishment of an equestrian and nature center, the FENCE property was used for agriculture activities and timber production. At that time, riparian buffers were removed and streams were channelized which was a common practice. There is also evidence on some tributaries of ephemeral gullies which most likely resulted from clear cutting. More recent development in the watershed has resulted in additional changes to Blockhouse Creek and its tributaries. Construction of the equestrian facility, nature trails and Interstate 26 required the installation of bridged and culverted stream crossings that have been detrimental to stream stability. These structures have also impacted the flow pattern and velocity of the project streams, resulting in changes to the cross - sectional area, and often facilitating the deepening of the channel. This deepening of the channel resulted in the streams becoming incised and losing their connection to the adjacent floodplain. In accordance with the approved restoration plan for the site, construction activities began in January 2008. Project activity on Blockhouse Creek and UT1 and UT2 consisted of making adjustments to channel dimension, pattern, and profile. A primary design consideration for this project was to allow stream flows larger than bankfull to spread onto a floodplain, dissipating flow energies and reducing streambank stress. The design for most of the restoration reaches involved a priority 11 approach with the construction of new, meandering channels across a floodplain that was excavated to the bankfull elevation of the creek. The lower part of reach 4 was not incised and did not require this approach. Along this section the overly sinuous channel was realigned in a more stable pattern at the existing elevation. Total stream length across the project increased from approximately 6,191 LF to 6,305 LF. Rootwads, rock and log vanes and other structures were used to protect streambanks and promote habitat diversity in pool sections. Streambanks were stabilized using a combination of erosion control matting, bare -root planting, transplants, and geolifts. Transplants provided living root mass quickly to increase streambank stability and create shaded holding areas for fish and aquatic biota. Native vegetation was planted across the site, and the entire restoration site is protected through a permanent conservation easement. The chronology of the Blockhouse Creek restoration project is presented in Table 2. The contact information for designers, contractors and plant material suppliers is presented in Table 3. Relevant project background information is presented in Table 4. The total stream length on restoration and enhancement reaches, surveyed during Year 1 monitoring was 5,875 LF. MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL Table 2. Project Activity and Reporting History Blockhouse Creek Restoration Project- #D06027 -A Activity or Report Data Collection Complete Completion or Delivery Categorical Exclusion Approved - -- January 2007 Conservation Easement Signed - -- September 2007 Restoration Plan Approved - -- October 2007 Project Permit Approval - -- December 2007/ January 2008 Final Design -90% - -- October 2007 Construction 'Upstream of Interstate -26 January 2008 March 2008 Downstream of Interstate -26 March 2008 May 2008 Permanent seed mix and riparian vegetation applied to project site Upstream of Interstate -26 January 2008 March 2008 Downstream of Interstate -26 March 2008 June 2008 Vegetation Plots , Crest Gauges and Photo Stations Established July 2008 September 2008 Mitigation Plan / As -built (Year 0 Monitoring — baseline) July 2008, December 2008 Year 1 Monitoring June 2009 November 2009 Year 2 Monitoring June 2010 December 2010 Year 3 Monitoring June 2011 December 2011 Year 4 Monitoring June 2012 December 2012 Year 5 Monitoring June 2013 December 2013 MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL Table 3. Project Contacts Table Project County Blockhouse Creek Restoration Project- #D06027 -A Designer Blockhouse Creek Reach 1 797 Haywood Rd Suite 201 Michael Baker Engineering, Inc. 1.97 mi- Blockhouse Creek Reach 3 Asheville, NC 28806 Blockhouse Creek Reach 4 Contact: Micky Clemmons, Tel. 828.350.1408 x2002 Construction Contractor 211.2 Ac. UT 2 8000 Regency Parkway, Suite 200 River Works, Inc. 38.4 Ac. Drainage impervious cover estimate ( %) Cary, NC 27511 Stream Order Contact: Will Pedersen, Tel. 919.459.9001 Planting & Seeding Contractor Piedmont Province. Borders Blue Ridge Escarpment 8000 Regency Parkway, Suite 200 River Works, Inc. Cary, NC 27511 Contact: George Morris, Tel. 919.459.9001 Seed Mix Sources Green Resources Nursery Stock Suppliers Arborgen and Hillis Nursery Monitoring 797 Haywood Rd Suite 201 Michael Baker Engineering, Inc. Asheville, NC 28806 Contact: Carmen McIntyre, Tel. 828.350.1408 x2010 Table 4. Project Background Table Blockhouse Creek Restoration Project- #D06027 -A Project County Polk County, NC Drainage Area (Square Miles or Acres) Blockhouse Creek Reach 1 1.63 mi- Blockhouse Creek Reach 2 1.97 mi- Blockhouse Creek Reach 3 2.21 mi- Blockhouse Creek Reach 4 2.44 mi- UT 1 211.2 Ac. UT 2 57.6 Ac. UT 3 38.4 Ac. Drainage impervious cover estimate ( %) <1% Stream Order Second Order Physiographic Region Piedmont Province. Borders Blue Ridge Escarpment MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL Ecoregion Southern Inner Piedmont Rosgen Classification of As -built Blockhouse Creek Reach 1 C4 Blockhouse Creek Reach 2 C4 Blockhouse Creek Reach 3 E4 /Bc4 Blockhouse Creek Reach 4 E4 UT 1 C4 UT 2 Bc5 (upper) /Cb (lower) UT 3 B -E (lower) Cowardin Classification Riverine Dominant Soil Types Blockhouse Creek Reach 1 Chewacla Loam, Pacolet Sandy Clay Loam Blockhouse Creek Reach 2 Chewacla Loam, Pacolet Sandy Clay Loam Blockhouse Creek Reach 3 Chewacla Loam, Pacolet Sandy Clay Loam Blockhouse Creek Reach 4 Chewacla Loam, Pacolet Sandy Clay Loam, Rion Sandy Loam UT 1 Chewacla Loam, Pacolet Sandy Clay Loam UT 2 Pacolet Sandy Clay Loam, UT 3 Chewacla Loam, Pacolet Sandy Clay Loam Reference Site ID Reference reach used for upper portion of project area located 350 LF upstream of project. Big Branch, Surry County was also identified in the NCDOT reference reach database as a suitable reference for design ratios USGS HUC for Project and Reference Sites Blockhouse Creek HUC #: 03050105 Big Branch HUC #: 03040101 Any portion of project segment(s) on NC 303d List? No Any portion of project upstream of a 303d Listed Segment? No Reasons for 303d Listing or Stressor N/A % of Project Easement Fenced 0, area demarcated with rope and posts but not a livestock fence. 1.5 Monitoring Plan View The monitoring plan view for Blockhouse Creek and its tributaries is included in Appendix C. The plan set provides a view of channel pattern as well as the location of structures designed to aid in dimension and profile stability. Other features shown on the plan view include the location of crest gauges, vegetation monitoring plots, cross - sections and reference photo stations. Figure 2 depicts the project streams, easement boundaries and monitoring reference data. MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL 2.0 YEAR 1 PROJECT CONDITION AND MONITORING RESULTS The five -year monitoring plan for the Blockhouse Creek Site includes criteria to evaluate the success of the vegetative and geomorphic components of the project. The specific locations of vegetation plots, permanent cross - sections, and crest gauges are shown on the Year 1 monitoring plan sheets (Appendix Q. Photo points, located along the stream restoration project, are also shown. 2.1 Vegetation Assessment 2.1.1 Description of Vegetative Monitoring As a final stage of construction, the stream margins and riparian area of the Site were planted with bare root trees, live stakes, and an herbaceous seed mixture of temporary and permanent ground cover vegetation. The woody vegetation was planted randomly ten to thirteen feet apart from the top of the stream banks to the outer edge of the project's easement limits. Bare -root trees were planted at a target density of 680 stems per acre and planting was completed in May 2008. Species planted and as -built densities are summarized in Table 5. The permanent seed mix of herbaceous species applied to the project's riparian area included soft rush (Juncus effuses), creeping bentgrass (Agrostis stolenifera), virginia wild rye (Elymus virginicus),wild bergamot (Monarda fistulosa), smartweed (Polygonum pennsylvanicum), beggars tick seed (Bidens frondosa), indian grass (Sorgastrum nutans), fox sedge (Carex vulpinoidea), deer tongue (Dichanthelium clandestinum), big bluestem (Andropogon gerardii) and black eyed Susan (Rudbeckia hirta). Successful restoration of the vegetation on a site is dependent upon hydrologic restoration, active planting of preferred canopy species, and volunteer regeneration of the native plant community. In order to determine if the criteria are achieved, 10 vegetation monitoring quadrants were installed across the restoration site to predict the survival rate of the bare - rooted trees. On a designated corner within each of the ten vegetation quadrants, one herbaceous plot was also delineated. Mortality will be determined from the difference between the previous year's living, planted trees and the current year's living, planted trees. The size of individual quadrants is 100 square meters for woody tree species. The herbaceous plots measure 1 square meter in size and are located within the larger vegetation quadrants established. Individual seedlings within each plot were flagged to facilitate locating them during future monitoring events. Each seedling was also marked with aluminum tags to ensure that the correct identification is made during future monitoring of the vegetation plots. The plots were randomly located to represent the different areas within the project. The locations of the ten vegetation plots are presented in Appendix C. 2.1.2 Vegetative Success Criteria The interim measure of vegetative success for the site will be the survival of at least 320, 3 -year old, planted trees per acre at the end of year three of the monitoring period. The final vegetative success criteria will be the survival of 260, 5 -year old, planted trees per acre at the end of year five of the monitoring period. Herbaceous cover is photographed annually during the growing season to provide a record of the density of ground cover derived from the riparian seed mix applied. If the measurement of vegetative density proves to be inadequate for assessing plant community health, additional plant community indices may be incorporated into the vegetation monitoring plan as requested by the NCEEP. - MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL Table -5Rootedy trees; °li.estalces and'see ing plante8 in`tbe oratiozi epariau oz ne ofBlockliouse =Ceele BlackliouCr >eekRest Pro'ect 1 :. .... ` Toes ec es coin ° osi ionafor two;differei f aze , is sl awi ` with orie•::area i�eiri ;u 'stream: =;pa P and the seeondarea ,mg downstreamofI 26. _.. Planting Plan Scientific name Common name Percent Planted by Species •,n�_ ,,�:`,\�S"��.:.." . _ :. -144Ri ,oV.:,\ BlockhbuSe;Creeku `3trea°mo£I26anc1UTI`'4.0 °I° treesf60 %o sh> '-s>A k•.,, .fir\ .,, ub's ?A Ianted at 680 „stemslA Trees - Planted 13'x13' Acer rubrum Red maple 13 Fraxenus pennsylvanica Green ash 13 Ju lans ni ra Black walnut 13 Liriodendron tulipfera Tulip poplar 0.5 Platanus occidentalis Sycamore 0.5 Understor Trees /Shrubs- Planted 10'x 10' Alnus serrulata Tag alder 9 Calicanthus oridus Sweet shrub 10 Cornus orida Flowering dogwood 12 Cercis Canadensis Redbud 10 Car inus caroliniana Ironwood 9 Asimena triloba Paw paw 9 FBI'oekhouse Creekdoivnstreamaf I 26and'IIgT2' 6{ %01 roes/ 4,{} %o shrubs lamed at.68f%stemslfl. Trees - Planted 10'x10' Acer rubrum Red maple 4 Dios yros vtrginiana Persimmon 6 Ju lans m ra Black walnut 12 Liriodendron tulipfera Tulip poplar to Platanus occidentalis Sycamore 10 Prunus serotnta Black cherry 6 Quercus hellos Willow oak 6 Quercus rubra Red oak 6 Understor Trees /Shrubs- Planted 13'x13' Alnus serrulata Tag alder 6 Calicanthusfloridus Sweet shrub 6 Cornus orida Flowering dogwood 9 Cercis Canadensis Redbud 8 Car inus caroliniana Ironwood 6 Asimina triloba Paw paw 5 Wood nUe etataanor I xveStakesPlanted 33: onacenter:.: -.. ....<: .. ....:.:.. ...N •:.==--= .m...:::::; Salix sericea Silky willow 30 Physocarpus opulifolius Ninebark 25 MICHAEL BAKER ENGINEERING, INC 11 BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL Sambucus Canadensis Elderberry 15 Cornus amomum Silky dogwood 30 Note: Species selection may change due to availability at the time of planting. 2.1.3 Vegetation Observations and Results Temporary seeding applied to streambanks beneath the erosion matting sprouted within two weeks of application and has generally provided good ground coverage. Live stake, bare root trees, and live brush in the geolift structures have also flourished and are contributing to streambank stability. Bare -root trees were planted throughout the conservation easement with the exception of the preservation reach. A 30 -foot buffer was established along of the majority of the restored stream and the width exceeds this minimum in most places. However at crossings the easement "pinches" in, to meet the crossing structure and along one section of Reach 3 the easement on the left bank is less than 30 feet due to existing constraints; however, the total width is greater than 60 feet. Tables A.1. through A.6. in Appendix A present vegetation metadata, vegetation vigor, vegetation damage and stem count data of the monitoring stations at the end of the Year 1 monitoring period. Data from the Year 1 monitoring event of the ten vegetation plots showed a range of 480 to 840 stems per acre. The data showed that the plots had an average of 620 stems per acre. Based on these results, this site is on track to meet the success criteria of 320 stems per acre at the end of monitoring Year 3. Trees within each monitoring plot are flagged regularly to prevent planted trees from losing their identifying marks due to flag degradation. It is important for trees within the monitoring plots to remain marked to ensure they are all accounted for during the annual stem counts and calculation of tree survival. No significant volunteer woody species were observed in any of the vegetation plots. The plots will also be assessed during Year 2 monitoring for volunteer species. 2.1.4 Vegetation Problem Areas 'No woody vegetation problem areas were identified during Year 1 monitoring. The project area was at the end of a number of drought years at the time planting initially occurred. Mortality rates for woody vegetation planted appear to be low though some sections of the project have experienced higher rates of mortality as evidenced by the vegetative plot data listed in Appendix A. Although the density of herbaceous cover varies across the site, conditions observed on -site during the Year 1 monitoring surveys indicate an improvement in vegetative cover. Drought conditions almost certainly contributed to some of the mortality observed among the woody vegetation planted. However, survival rates of the established plots indicate that plantings across the easement area are of sufficient density to meet regulatory requirements, as well as the site stabilization and habitat enhancement goals originally set forth in the restoration plan. It is expected that site vegetation will continue to improve given that we continue to experience good weather conditions as the buffer matures during the next several years. 2.1.5 Vegetation Photographs Photographs are used to visually document vegetation success in sample plots. A total of ten sample sites were established to document tree conditions and herbaceous coverage at each vegetation plot across the Site. Reference photos of tree and herbaceous condition within plots are taken at least once per year. Photos of the plots are included in Appendix A of this report. MICHAEL BAKER ENGINEERING, INC BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL 2.2 Stream Assessment 2.2.1 Description of Geomorphic Monitoring Geomorphic monitoring of restored stream reaches is being conducted over a five year period to evaluate the effectiveness of the restoration. Monitored stream parameters include channel dimension (cross- sections), profile (longitudinal survey), bed composition, bank stability, bankfull flows and stability of reference sites documented by photographs. Crest gauges, as well as high flow marks, will be used to document the occurrence of bankfull events. The methods used and any related success criteria are described below for each parameter. The location of permanent cross - sections and crest gauges is shown on the Year 1 monitoring plan sheets in Appendix C. 2.2.2 Morphometric Success Criteria 2.2.2.1 Cross - Sections Sixteen permanent cross - sections selected for monitoring were located in representative riffle and pool reaches on Blockhouse Creek, UTI and UT2. Each cross - section was marked on both banks with permanent pins to establish the exact transect used. A common benchmark is used for cross - sections and consistently referenced to facilitate comparison of year -to -year data. The cross - sectional surveys includes points measured at all breaks in slope, including top of bank, bankfull, inner berm, edge of water, and thalweg, if the features are present. Riffle cross - sections are classified using the Rosgen Stream Classification System. There should be little change in the Year 1 monitoring cross - sections between years. If changes do take place, they will be evaluated to determine if they represent a movement toward a more unstable condition (e.g., down - cutting or erosion) or a movement toward increased stability (e.g., settling, vegetative changes, deposition along the banks, or decrease in width /depth ratio). 2.2.2.2 Longitudinal Profile A longitudinal profile was completed for the restored streams to provide a baseline for evaluating changes in channel bed condition over time. A longitudinal profile was conducted for the entire project length of UT1 and UT2. An additional 3,396 linear feet of stream channel was surveyed on Blockhouse Creek, including the upper 1,500 feet above I -26 and the entire length below 1 -26. Longitudinal profiles will be replicated annually during the five year monitoring period. Measurements taken during longitudinal profiles include thalweg, water surface, inner berm, bankfull, and top of low bank, if the features were present. Each of these measurements was taken at the head of each feature (e.g., riffle, or pool) and the maximum pool depth. Elevations of grade control structures will also be included in longitudinal profiles surveyed. All surveys were tied to a permanent benchmark of know elevation.' Cross - section and longitudinal profile data are provided in Appendix B. The longitudinal profiles should show that the bed features are remaining stable and are not aggrading or degrading. The pools should remain deep with flat water surface slopes, and the riffles should remain steeper and shallower than the pools. Bed form observations should be consistent with those observed for channels of the stream type that the design was based on. 2.2.2.3 Bed Material Analyses Bed material analyses will include pebble counts taken during each geomorphic survey. Pebble counts will provide data on the particle size distribution of the stream bed. These samples may reveal changes in sediment gradation that can occur over time as the stream MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL adjusts to the constructed channel and to its sediment load. Significant changes in the particle size distribution will be evaluated with respect to stream stability and watershed changes. 2.2.3 Morphometric Results 2.2.3.1 Cross - Sections Year 1 cross - section monitoring data for stream stability was collected during May and June 2008. The sixteen permanent cross - sections along the restored channels were re- surveyed to document stream dimension at the end of monitoring Year 1. Cross - sectional data is presented in Appendix B and the location of cross- sections is shown on the plan sheets in Appendix C. The cross - sections show that there has been little to no adjustment to stream dimension since construction. Cross - sections 1, 7, and 8 on Blockhouse Creek and cross - sections 12 and 14 on UT1 and UT2 respectively, exhibited slight signs of aggradation and adjustment of channel dimension, but are otherwise stable. Cross - sections 1 and 7 were both located at riffles which were originally slightly steeper than what was surveyed in 2009. Cross - sections 8, 12 and 14 were taken at pools which have experienced slight aggradation since the As -built survey was completed. A tree was down at cross - section 14 as well, contributing to local aggradation along this subreach of UT2. Changes at cross - section 8 and 5 may in part be attributable to the fact that the cross - section pin was disturbed and had to be relocated. At cross - section 5, the original right bank pin could not be found. The left bank pin of cross - section 8 was lost as a result of minor repairs made to the left bank behind a rootwad. As noted in the vegetation monitoring section, the Blockhouse Creek restoration site experienced drought conditions for several years leading up to the construction of the project. However, 2009 has been a wetter year; some cross - section and profile data collected reflect the development of low bankfull benches as well the development of point bar features on the inside bank of meander bends. The remaining cross - sections did not indicate any changes in dimension compared to as -built conditions and appeared to be stable with the help of in- stream structures, adequate bank sloping and developing vegetation. 2.2.3.2 Longitudinal Profile Longitudinal profiles for Year 1 were surveyed in May and June 2009 and are compared to the data collected during the as -built condition survey. Profiles of the various project reaches are presented in Appendix B. The longitudinal profile for Blockhouse Creek upstream of Interstate 26 remains stable and has not changed significantly since the as -built survey was completed in 2008. The longitudinal profile for Reach 2 of Blockhouse Creek reflects the presence of a sandbag weir at station 14 +3lwhich has backed up water within the channel. This was done temporarily by the landowner in order to pump water from the creek to wet down equestrian riding rings. The lower reach of Blockhouse Creek immediately downstream of the Interstate 26 culvert and downstream of the confluence with UT2 exhibited some aggradation. UT 1 did not exhibit any considerable profile changes. UT2 did not contain flow during the As -built survey but at the time of the Year 1 survey had a bold flow. Compared with the as -built survey, UT2 appears to have degraded slightly above and below a wetland complex adjacent to the project area. However, it is likely that the "downcutting" is attributable to the small tributary experiencing periodic flow sufficient to flush the tributary of excess siltation. Visual observations and cross - sections confirm channel overflow in areas, although flow was MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL not sufficient to be recorded on a crest gauge located on UT2. Channel slope on UT2 was designed to be gradual in the vicinity of the wetland as compared to other sections of UT2 to avoid impacts to the hydrology of the site. As a consequence, there is little change in the profile in this area when compared to the As -built survey. In- stream structures installed within the restored stream included constructed riffles, log vanes, boulder steps, and root wads. Visual observations of these structures through the first year indicate that structures are functioning as designed and holding their elevation and grade. Log vanes placed in meander pool areas have provided scour to keep pools deep and provide cover for fish. Boulder steps maintained step -pool spacing and facilitated transitions in channel slope at the confluence of UT2 to Blockhouse Creek. In addition to providing grade control, the boulder steps also provided bedform diversity, improving in- stream habitat. Rootwads placed on the outside of meander bends have provided bank stability and in- stream cover for fish and other aquatic organisms. 2.2.3.3 Bed Material Analyses Pebble count data collected in several project reaches indicate Blockhouse Creek and its tributaries continue to transport particles roughly the same size or larger as those found during as -built surveys (Table B2., Appendix B). A pebble count was not performed on UT2 due to the dominance of silt and sand as the bed material in this channel. Visual observation of Blockhouse Creek and its tributaries and a review of pebble count data collected did not yield any signs that sediment transport functions have been hampered by the restoration project. 2.2.4 Hydrologic Criteria The occurrence of bankfull events within the monitoring period will be documented by the use of crest gauges and photographs of high flow lines. Three crest gauges were installed on the floodplain within 10 feet of the restored channels and with the bottom of the gage at approximately bankf ill. One crest gauge was placed on UT 2, while 2 gauges were set up on Blockhouse Creek (upstream and downstream of I -26). The first gauge on the main channel was set up on the right bank below the confluence of UT I and Blockhouse Creek. The second crest gauge was set up, at the downstream end of the project, just upstream of the confluence of UT3 and Blockhouse Creek on the right bank. The crest gauge on UT2 was placed above the vehicle crossing at the lower end of the tributary. The crest gauges will record the highest watermark between site visits and will-be checked at each site visit to determine if a bankfull event has occurred. Photographs will be used to document the occurrence of debris lines and sediment deposition on the floodplain during site visits. Two bankfull flow events must be documented within the 5 -year monitoring period. The two bankfull events must occur in separate years; otherwise, the stream monitoring may have to be continued until two bankfull events have been documented in separate years. 2.2.5 Hydrologic Monitoring Results No bankf ill events were recorded during the Year 1 monitoring period. We will be evaluating the site selection of these gages and may be lowering them. At present the bottom of the gage is approximately at the bankfull elevation, so flows at bankfull may not register. If we place them at a position lower than bankf ill we should be better able to detect a stage that is at bankfull. 2.2.6 Stream Problem Areas A few areas of concern were noted at the project site, some of which are not related to a specific point on the channel. The rate of overland flow that the site experiences above Interstate 26 MICHAEL BAKER ENGINEERING, INC. 15 BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL continues to be somewhat of a concern. Due to the buildings on this site and the high compaction of the soil from heavy use by horse show participants, the runoff from the land adjoining the stream is high. This has not affected the channel proper but is the source of some minor rutting along terrace slopes leading down to the floodplain. In October 2008, Baker and FENCE submitted a grant funding application to the N.C. Clean Water Management Trust Fund for a project that would address this issue, but the grant was not funded. Although the threat overland flow poses to stream quality will be mitigated as the riparian buffer matures, the implementation of additional measures that would reduce the rate and intensity of stormwater would provide many benefits to FENCE and this project stream. The second concern is that two of the three box culverts under Interstate 26 are two thirds full of sand. As noted in the As -built Report, during high flow events this sand mobilizes into the channel downstream of the interstate. This is causing some pools to fill with sand and the loss of pool depth. The channel is moving this material and it will eventually correct the problem but it will affect the lower end of the project over the next several years. The NCDOT has been contacted about this issue but they do not appear able to address the problem. A concern that was located at a specific point is at cross - section 8 in Reach 4 of Blockhouse Creek. The bank behind a rootwad located in one of the last meanders of the project area required some minor repair work due to soil subsidence. The loss of bank occurred due to stream flow under the rootwad eroding soil from around the trunk of the rootwad creating a "sinkhole" in an area of approximately 5 feet by 5 feet. Loss of soil at the base of the rootwad and overland flow resulted in a small "sinkhole" being created behind the rootwad. To remedy the problem, 10 to 14 inch rock was placed at the base of the hole and this was covered with a geotextile, backfilled, re- seeded and the area was mated. Lastly, the small sandbag weir located at Station 14 +31 has resulted in an alteration of riffle -pool dimensions and sequencing in Reach 2 of Blockhouse Creek. While no structures have been adversely impacted by the dam, much of Reach 2 is now a pool. If a breach were to occur, it is possible that high flow could damage some of the woody vegetation present on both downstream banks. Although this weir is located within an easement break, Baker has been in communication with the U.S. Army Corps of Engineers regarding the weir. Please see Appendix D for comments received by the U.S. Army Corps of Engineers from a site visit conducted in October 2009. We have submitted a letter to the Director of FENCE requesting that the dam be removed and will continue to monitor the situation. It is possible that we will lieed to modify a cross -vane just above this location to provide greater convergence and greater pool scour. This will provide the depth needed for the landowner to do their temporary irrigation pumping during horse shows. Based on the data collected, riffles, pools and other constructed features along the restored channel are stable and are functioning as designed. Structures installed to enhance pool habitat are stable and functioning. However, the full functioning of some structures is being impaired by slight aggradation, particularly downstream of the box culvert under Interstate 26 and areas of UT2 where channel slope modification was limited due to the presence of a nearby wetland. Beyond the issues noted above, no areas of concern have been identified during the first year following completion of the project. Overall, the site is on track to achieve the stream morphology success criteria specified in the Restoration Plan for the Site. 2.2.7 Stream Photographs Photographs are used to document restoration success qualitatively. Reference stations were photographed during the as -built survey and will be monitored for five years following construction. Reference photos are taken once a year, from a height of approximately five to six feet. Permanent markers installed will ensure that the same locations (and view directions) are MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL utilized during each monitoring period. Reference photographs of the project streams are shown in Appendix B. 2.2.7.1 Lateral Reference Photos Reference photo transects were taken of the right and left banks at each permanent cross - section. For each stream bank photograph, a survey tape was centered in the frame which represents the cross - section line located perpendicular to the channel flow. The water line was located in the lower edge of the frame in order to document bank and riparian conditions. Photographers will make an effort to consistently maintain the same area in each photo over time. 2.2.7.2 Structure Photos Photographs of primary grade control structures (i.e. vanes and weirs), along the restored stream are included within the photographs taken at reference photo stations. Photographers will make every effort to consistently maintain the same area in each photo over time. Lateral and structure photographs are used to evaluate channel aggradation or degradation, bank erosion, success of riparian vegetation, structure function and stability, and effectiveness of erosion control measures. Lateral photos should not indicate excessive erosion or degradation of the banks. A series of photos over time should indicate successive maturation of riparian vegetation and consistent structure function. Photographs of the restoration project were taken in May and June 2009. The photographs illustrate generally stable conditions across the project site. Vegetative growth along the streambanks and riparian buffers has improved since construction was completed in 2008. Structures are functioning as designed; to date, no structures have had to be repaired. 2.2.8 Stream Stability Assessment To aid the NCEEP in evaluating the risk of erosion from changes in channel and bank stability and subsequent sediment yield from the project area, Baker will assign numeric values to streambank and channel features. This will occur during Year 5 of the monitoring period. These numeric scores will be derived using the Bank Erosion Hazard Index (BEHI) and Near Bank Stress (NBS) evaluation methods. The scores will then be used to evaluate channel stability and project sediment export. Results from an annual visual stability assessment are provided in Appendix B. 2.2.9 Quantitative Measures Summary Tables The quantitative pre - construction, reference reach, and design data used to determine restoration approach, as well as the As -built baseline data used during the project's post - construction monitoring period are summarized in Appendix B. MICHAEL BAKER ENGINEERING, INC. BLOCKHOUSE CREEK RESTORATION PROJECT YEAR 1 MONITORING REPORT- FINAL I� U f� 0 r r� r� 1 APPENDIX A. Vegetation Data 0 u u n 0 0 0 0 n r� 0 o 5 x ° ° O N m N @ V c � � J � N x G i V y_ j cX—d N y F O °D 73 X .� i N O Vi" � O ❑ N S G N V r O F � -a U U a y O U y F II. 7 N " V O N y O C O C ° n O C c CL Z Lu �. M V n F F y o 0 0 O O� � pA .p %• � .0 .i L > > fd � i 0. ip � M Cl G V N N > G' U -O 'D� •� G C U A H T 7 0 a� __ K O C, 0 F v�0i y r0 DA Z. 0 ti rn h y ``• V N Y •p N w t ` y-' T U O >, 7 7 ^ O p id 'c U O >> O F s E N a N O LW z ' n a bo tw U ° ° 9 F E D U v J Q W fi .j u. U. ._7 D Q 0] C R m 'o^ a eta i Y � a � 9 3 3 u � ea u E a � CL � .fl a C. � � d u � � to •fl _ o CL. E E •L R 1 11 R G a a a L u c n aG C L y CJ C H a a v Table A2. Vegetation Vigor by Species Rlnrkhnnce Creek Rectnrntinn Prniect- ftDn6n?7 -A Table A3. Vegetation Damage by Species Blockhouse Creek Restoration Proiect- #DO6027 -A Species CommonName 4 3 2 1 0 Missing Unknown Alnus serrulata hazel alder 6 G� e, �4O Asimina triloba pawpaw 1 1 Betula nigra river birch 5 4 1 1 ` �� J Acer rubrum red maple Corpus amomum silky dogwood 5 1 1 6 1 pawpaw 1 1 1 Cornus florida flowering dogwood 1 l Calycanthus floridus eastern sweetshrub 1 3 3 Cercis canadensis eastern redbud Diospyros virginiana common persimmon 10 6 0 8 1 1 1 1 I Fraxinus pennsylvanica green ash 26 17 1 Fraxinus permsylvanica green ash 0 26 Halesia Carolina Carolina silverbell Halesia caroling Carolina silverbell 2 black walnut 3 6 3 Liriodendron tuli ifera tuli tree 7 12 7 Juglans nigra black walnut 4 1 Quercus phellos 1 3 6 4 Quercus rubra northern red oak Quercus phellos willow oak 6 16 35 159 1 34 4 Cal canthus floridus eastern sweetshrub 2 1 3 Cercis canadensis eastern redbud 2 3 Quercus rubra northern red oak 8 2 1 4 Liriodendron tulipifera tuliptree 10 9 Platanus occidentalis Americansycamore 25 15 4 Acer rubrum red maple 6 1 1 2 1 TOT: 16 116 118 32 1 3 1 2 1 37 1 2 Table A3. Vegetation Damage by Species Blockhouse Creek Restoration Proiect- #DO6027 -A �5 t� ko G� e, �4O a, ` �� J Acer rubrum red maple 4 7 1 3 Alnus serrulata hazel alder 0 6 Asimina triloba pawpaw 1 1 1 Betula nigra river birch 1 10 1 Calycanthus floridus eastern sweetshrub 3 3 3 Cercis canadensis eastern redbud 3 2 3 Cornus amomum silky dogwood 0 8 Comus florida flowering dogwood 1 1 I Diospyros virginiana common persimmon 1 17 1 Fraxinus permsylvanica green ash 0 26 Halesia Carolina Carolina silverbell 0 2 Juglans nigra black walnut 3 6 3 Liriodendron tuli ifera tuli tree 7 12 7 Platanus occidentalis American sycamore 3 41 3 Quercus phellos willow oak 4 6 4 Quercus rubra northern red oak 4 11 4 TOT: 116 16 35 159 1 34 0 a u ro ro O 0 .y d 7 a a F VM y JO O 4) — sa,�O�a �eJ MvM�o�000MOO�n a� e OJO�4 nOJ Q r xt C 0 Cn 0 0 .o r o0 C+ o 0 0 0 0 0 0 0 0 0 0000000000 0 0 0 0 0 0 0 0 0 0 xxxxxxxxxx X b 10 y N N N N N N N fV N N 41 Q• D\ O+ u 0 0 0 0 0 0 0 0 0 0 0 r u O 0] F u C e O w a c U E v� Q a F 1.4'. 13 �'0 ea4: �yJ. 6000 LV 9�Z60t t. 80001V J96O/ I M � N OM l 9'14 01,q Z. 000lzt .rea k,60l, .. N N N M^ N l.�e S000 yea f 9j. 60 Jo M v t ^ t.jea�� o0`j �J 9`t6ot j l:�ea� 000�V �J 9`Z601 �O/ — N r 7 C t 000�j 90601 �Z60., S ViaJS ale D N — - M N � N - - - M r N M •-- N N N M N s s�o e o — o c � o " Q No E c D °� E c o �e v o s o x U 0 E S o° E c .c_ o c> O o ° v .r D c a E c u `E° oo o v 'c' G o 2 U QQQmUUUUOc� T-' 1300'- o v o v F 0 0] F 10 CD "t -1 H H- 't 00 M 00 C> Cl N 00 00 - Cl Oo k'I 10 00 I kl O 10. r- m 10 w t3 IZ , 3 fi lz 11 u zs 51 t —1—i zs zs S E Q I E-1 - I (Z� Z� cn cZ ni �: Blockhouse Creek Restoration Project Photo Log - Vegetation Plot Photo Points Notes: I. Photo point locations are shown on the plan views in the actual location the picture was taken. 2. All points are marked with a wooden stake and pink flagging tape. 3. Herbaceous plot located in foreground of each photo. 6/26/2009 6/262009 Photo Point I: Veg Plot I Photo Point 2: Veg Plot 2 6262009 Photo Point 3: Veg Plot 3 626 /2009 Photo Point 4: Veg Plot 4 6 /262009 Photo Point 5: Veg Plot 5 6262009 Photo Point 6: Veg Plot 6 6262009 6262009 Photo Point 7: Veg Plot 7 Photo Point 9: Veg Plot S 6262009 Photo Point 9: Veg Plot 9 6262009 Photo Point 10: Veg Plot 10 m APPENDIX B. Geomorphic Data x M LO .1 c�' I) o o Lo 00 C:) N r__: 0, 1'- LI) 0) C:l 10 4 c) F-_ OD C-4 �3 cis C_' C -,t 0) Ci Lo t-- r- CN Lo (D - 'o 00 In Cl) a) Lo 00 LO In M CD 0 rl- C� C� C� :� c " co -,t V� 4� , 0 CR 0 11 _t 0 - 0 , M C,� co t__ Cl) m 6 'CIO, C 0 ,t 0) m C6 Lo 0 �2 "T Lo Mw co CD 0 CD M O Lo C4 r- 0 C� Cl) 0) (D -: 0 0� M U� o C) C) CD C) r- (D cq co r*-: a) r-, C, 00 CN! "t 0) Lo 0 C:) CM C'i M c6 '0 M M M M 'I- 0 CR 0 0) C 00 cl C) 00 00 (D U� o C� C, r c) C) . 0 C) a Lo OD w . . . . . . 0 ZT - Cl) - 4 4 M r C, . . 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LL m N C X 0 L U (U m O j N fn a) J U) O C O N L U a '= M U C >>6 .D 0 d 0 0 N C C COj U- m U C +' O 2 LL LL m "O N c` d C C p> to C 2' d R d N L N � LLN U c cu aR o a g p p U d d io C 1 LL m E d c p E o a v I C � U O �- N Ol N _ _ E O O y G � I E CD ` U � � � { I G O U I I O C ` O D O CD O v n b { n O +I+ � 1 E l a. v E � o E h O r _I 3 D N O L__ N D U � b c d � I v I ' o I z Table B4. Stream Problem Areas- Year 1 Monitoring Blockhouse Creek Restoration Project #D06027 -A Feature Issue Station Number Suspected Cause Minor rutting from overland flow n/a Exposed earth from equestrian activities, runoff from buildings Aggradation 28 +21 Sediment laden triple box culvert under I -26 Sandbag Weir 1 14 +31 l Irrigated water used for dust control and green/landscaped areas Bank erosion/soil subsidence 1 42 +07 JToeslope erosion o -- o0 I 0 o I O Q N i O (n CD O I , 0 C) 00 O N N O ' O m L U t r �. CO Q O C7 O o _O O CO c v m LL U) O O o L I 1 O W � ' D v I ' 1 W O J ' N C) CO lq- N O 00 CO 'q N O CO CO �- w co co co ti ti ti ti ti O O co 00 w co w m w w 00 O 0 (11) uOIjeA813 O O O Foo O O N O LL UU) N ' ' O O O N co O ++ _ O CD O N O � ' � Q �C 4) • '� O O 00 M F- , L U, i � a� O p ° O :p C'') - m V , O m J O CD O N co t0 LL co O O M J p O � 0 't N O o0 O d' N O m 0 0 0 0 U') LO U') U') LO It M M 00 w M M M M 00 M 00 0 00 0 N (}4) U01jeAa13 O O 00 O O N O Q I O LO LL >L I ' O 00 O I � N .Q cn Q � L C) C M O i C/) O 1 C) 0 J j N �I i m J O LL 0 O 00 00 00 00 00 00 00 00 00 (4) u01jen813 C) 0 N 00 O O N O cn O O Q ' O O 00 m N � H ._ o c O C O D L � (n m � J i t+ O O d' Q LL J � CD CD N , O 0') 00 00 I— Or- CO CD LO 00 00 00 00 00 00 00 00 (11) U011BAO13 Feature Stream I , N!r e BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle C4 27.4 21.24 1.29 2.33 1 16.45 0.9 2.5 876.97 876.81 Cross - Section 1 - Riffle Sta. 2 +27 879 878 877 ' c _ 0 cc 876 t Monitoring Year 1 d LU - - - - • Asbuilt 2008 875 o -- Bankfull 0 - -- Floodprone 874 100 110 120 130 140 150 160 Station (ft) Photo 1: XS -1 facing right bank Photo 2: XS -I facing left bank Photo 3: XS -I facing left bank Photo 4: XS -1 facing downstream Feature Stream Tvpe BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Pool C4 31.2 23.72 1.32 3.16 18.01 1.1 2.3 876 876.41 Cross - Section 2 - Pool Sta. 2 +82 884 882 $ 880 ------------------------------------------------------------------------------------------------------- 0 878 _m Lu 876 ----------------------------------------- — 4 Monitoring Yearl - - - - - Asbuilt2008 874 ©--- Bankfull - © - -- Floodprone 872 100 110 120 130 140 150 160 170 Station (ft) Photo 5: XS -2 facing right bank Photo 6: XS -2 facing left bank Photo 7: XS -2 facing right bank Feature Stream Tv e BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Pool Bc 1 35 22.05 1 1.59 3.66 13.89 1 2.2 871.9 1 871.89 Cross - Section 3 - Pool Sta.10 +98 877 876 --------------------------------------------------------------------------------------------------- 875 874 -- -- c p 873 1 _ > 872 -- ---- ---- ------------ ---- - -- -j d � W 871 870 ` I Monitoring Year 1 869 ----- Asbuilt 2008 - • -o - -- Bankfull 868 - - -© - -- Floodprone 867 __ ._ ..... 100 110 120 130 140 150 160 Station (ft) Photo 8: XS -3 facing right bank Photo 9: XS -3 facing left bank Photo 10: XS -3 upstream view of right bank Photo 11: XS -3 facing left bank Feature Stream Tv e BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle C4 1 32.2 19.69 1 1.64 2.85 12.03 1 2.9 872.4 1 872.37 Cross - Section 4 - Riffle Sta.11 +41 877 — 876 875 ----------------------------------------------------------------------------------------------------- 874 0 4a 873 - - --------------------------------- W 872 Monitoring Year 1 871 ----- Asbuilt 2008 870 - 0 - -- Bankfull -' -­9 - -- Floodprone 869 100 110 120 130 140 150 160 170 Station (ft) Photo 12: XS -4 facing right bank Photo 13: XS -4 facing left bank Photo 14: XS -4 facing right bank Photo 15: XS -4 facing left bank Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle Bc 31.7 18.16 1.75 113 10.4 0.9 1.7 870.3 870.01 Cross - Section 5 - Riffle Sta.16 +38 876 - -- — 875 874 --------------------------------------------------------------------------------------------- 873 c 872 0 871 ------------- ---- --- ----- - - - - -- 870 ` —* — Monitoring Year 1 W 869 �. - - -- Asbuilt2008 868 - - -o - -- Bankfull 867 - " © - -- Floodprone 866 100 110 120 130 140 150 160 Station (ft) Photo 16: XS -5 facing right bank Photo 17: XS -5 facing left bank Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BFl Ratio ER BKF Elev TOB Eev Pool C4 28.1 1233 1 42 2.72 13.99 0.9 1.8 860.9 860.73 Cross - Section 6 -Pool 870 Sta. 32 +61 868 866 c 864 - 0 m 862 Monitoring Year 1 y------------------------------------ W 860 - - - - Asbuilt 2008 - -o- - -• Bankfull 858 -o- - -• Floodprone 856 100 110 120 130 140 150 160 Station (ft) Photo 18: XS -6 facing right bank Photo 19: XS -6 facing left bank Photo 20: XS -6 facing upstream Photo 21: XS -6 facing downstream Feature Stream i Type 11 BKF Area BKF Width BKF Depth hoax BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle E4 37.2 20.37 1.83 3.55 11.14 1 2.6 861.5 1 861.42 Photo 22: XS -7 facing right bank Photo 23: XS -7 facing left bank Photo 24: XS -7 facing upstream Photo 25: XS -7 facing downstream Cross - Section 7 - Riffle Sta. 33 +10 870 868 - — 866 , ------------------------------------------------------------------------------------------- - - - - -- = 864 —� Monitoring Year 1 862 - - _ _ _ _ _ - - 860 - - -- Asbuilt2008 W - - -o - -- Bankfull 858 - - -o - -- Floodprone 856 100 110 120 130 140 150 160 170 Station (ft) Photo 22: XS -7 facing right bank Photo 23: XS -7 facing left bank Photo 24: XS -7 facing upstream Photo 25: XS -7 facing downstream Feature Stream Type BKF Areal BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER 13KF Elev TOB Elev Pool E4 35.3 1 24.39 1.45 3.06 16.85 1 2.5 1 856.4 856.41 Photo 26: XS -8 facing right bank Photo 28: XS -8 left bank facing downstream Photo 27: XS -8 facing left bank Cross - Section 8 - Pool Sta. 42 +07 860 859 ---------------------------------------------------------------------------------------------------------- - - - - -o 858 - - --- - - - - -- �-. 857 - - 856 --' C 4) 855 854 853 ' ' —�— Monitoring Year 1 s - - - - - Asbuilt2008 iu 852 ; © - -- Bankfull 851 © - -- Floodprone 850 100 110 120 130 140 150 160 170 Station (ft) Photo 26: XS -8 facing right bank Photo 28: XS -8 left bank facing downstream Photo 27: XS -8 facing left bank Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle E4 1 42.1 21.72 1.94 3.28 11.21 1 2.7 87.3 1 87.27 Photo 29: XS -9 facing right bank Photo 30: XS -9 facing left bank Photo 31: XS -9 facing upstream Photo 32: XS -9 facing downstream 861 Cross - Section 9 - Riffle Sta. 42 +56 ------------------------------------------------------------------------------------------------------- - - - - -o 860 859 $ 858 _ 0 857 -- - -- - -- - "'- :r > m W 856 855 t Monitoring Year 1 ----- Asbuiltzool3 o - -- Bankfull 854 - o - -- Floodprone 853 100 110 120 130 140 150 160 170 Station (ft) Photo 29: XS -9 facing right bank Photo 30: XS -9 facing left bank Photo 31: XS -9 facing upstream Photo 32: XS -9 facing downstream Feature Stream Tye BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle C4 10.9 1 11.72 0.93 1.76 12.63 1 3.3 880.5 880.47 Cross - Section 10 - Riffle Sta. 0 +74 882.5 ------------------------------------------------------------------------------------------------------------------ - - - - -o 882 881.5 - 881 ' O - M 880.5 - - -- - _ d 880 —0 Monitoring Year 1 W 879 5 - - - - - Asbuilt zoos © - -- Bankfull 879 - - - © - -- Floodprone 878.5 100 105 110 115 120 125 130 135 140 Station (ft) Photo 33: XS -10 facing right bank Photo 34: XS -10 facing left bank from right bank pin Photo 35: XS -10 facing left bank Photo 36: XS -10 facing downstream Feature Stream ` Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle C4 11 11.76 0.94 1.81 1 12.53 1 3.4 1 874.76 874.73 Cross - Section 11 - Riffle Sta. 4 +68 877 876.5 ----------------------------------------------------------------------------------------------------------- - - - - -0 876 - - 875.5 c 0 875 <o --------- ---- -- ---- --- - - - - -- - - ID 874.5 t Monitoring Year 1 W 874 � ----- Asbuilt 2008 873.5 - - -o - -- Bankfull 873 © - -- Floodprone 872.5 100 105 110 115 120 125 130 135 140 145 Station (ft) Photo 37: XS -11 facing right bank Photo 38: XS -1 I facing left bank Photo 39: view of XS -11 from bridge, facing downstream Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Pool C4 1 8.3 13.3 0.63 1.72 21.23 1 2.3 873 1 873.07 Cross - Section 12- Pool Sta 4 +99 877 - 876 $ 875 c--------------------------------------------------------------------------------- 0 c 874 mMonitoring Year 1 W873 --------------------------- - - - - - Asbuilt 2008 872 © - -- Bankfull - - - -o - -- Floodprone 871 100 105 110 115 120 125 130 135 140 145 Station (ft) Photo 40: XS -12 facing right bank Photo 41: XS -12 facing left bank Photo 42: XS -12 facing downstream Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BH'Ratio ER BKF Elev TOB Elev Riffle Bc 3.5 5.34 0.65 1.21 8.27 1 4.3 878.54 878.53 Cross - Section 13 - Riffle Sta. 1 +46 881 880.5 880 ------------------------------------------------------------------------------------------------ $ 879.5 c 0 M 879 _ ,'� t Monitoring Year 1 m 878.5 _ , ----- Asbuilt2008 W 878 © - -- Bankfull 877.5 ©- -- Floodprone 877 100 105 110 115 120 125 130 Station (ft) Photo 43: XS -13 facing right bank Photo 44: XS -13 facing left bank Photo 45: XS -13 facing upstream Photo 46: XS -13 facing downstream Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth WID BH Ratio ER BKF Elev TOB Elev Pool E5 2.8 1 5.03 0.56 0.93 8.94 1 4 876.36 876.36 878.5 878 877.5 $ 877 c 0 876.5 > 876 d W 875.5 875 874.5 Cross - Section 14 - Pool Sta. 3 +58 ---------------------------------------------------------------------------------------------------- - - - - -o - - - - - ------------------------ t Monitoring Yearl - - - - - Asbuilt 2008 © - -- Bankfull - - - © - -- Floodprone 100 105 110 115 120 Station (ft) 125 Photo 47: XS -14 facing right bank Photo 48: XS -14 facing left bank Photo 49: XS -14 facing upstream Photo 50: XS -14 facing downstream Feature Stream Type BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Riffle Cb5 5.4 1 8.24 0.65 1.36 12.64 1.2 4.2 1 865 865.29 Cross - Section 15 - Riffle Sta.10 +60 867 866.5 - 866 $ 865.5 _ - C C 865 •' t Monitoring Year 1 > 864.5 _0 ----- Asbuilt 2008 W 864 - - - - © - -- Bankfull 863.5 © - -- Floodprone 863 100 105 110 115 120 125 130 135 140 Station (ft) Photo 51: XS -15 facing right bank Photo 52: XS -15 facing left bank Photo 53: XS -15 facing upstream Photo 54: XS -15 facing downstream Feature Stream Tv e BKF Area BKF Width BKF Depth Max BKF Depth W/D BH Ratio ER BKF Elev TOB Elev Pool Cb5 4.3 5.02 0.86 1.3 5.85 2 2.8 859.7 860.97 Cross - Section 16 - Pool Sta.11 +53 864 863 $_ 862 C 0 861 r -- ------ a�i 860 ----------- - - - - -- , LV 859 858 100 105 110 115 120 125 130 135 Station (ft) t Monitoring Year 1 - - -- Asbuilt2008 o - -- Bankfull © --- Floodprone 140 145 150 Photo 55: XS -16 facing right bank Photo 56: XS -16 facing left bank Photo 57: XS -16 facing downstream C O 7 �L C N O U EU d � � NN O a� t � � 0O O �U m � O d � O O a a� w 0 0 0 0 0 0 0 0 0 0 0 OO CD C) O CD O O O O O LO m r IUGDJad sselO 00 041 64, of s C9 O 941, c' 00 99 00 -69 s� E N U '9� N m 09( � a 00 941 o� sc Off, O'� 0410 s`�o s 0 900 N m } Q 0 0 0 0 0 0 0 0 0 0 0 OO CD C) O CD O O O O O LO m r IUGDJad sselO 00 041 64, of s C9 O 941, c' 00 99 00 -69 s� E N U '9� N m 09( � a 00 941 o� sc Off, O'� 0410 s`�o s 0 900 C O N Y CD N N N U 3U N N_ Y .0 :3 v O m O U m � � B d a a� 0 0 0 0 0 0 0 0 0 0 0 00 0) co r (D O O� O N O O r ;u03Jad sselO Oo os 66c) o! s C.9 O 19 k, 00 8CI 06, �9 N �tn U 9� N C� N d 09! � t O� `9S o� a�l Off, O�1 0s0 s 0 900 m � a 0 0 0 0 0 0 0 0 0 0 0 00 0) co r (D O O� O N O O r ;u03Jad sselO Oo os 66c) o! s C.9 O 19 k, 00 8CI 06, �9 N �tn U 9� N C� N d 09! � t O� `9S o� a�l Off, O�1 0s0 s 0 900 Blockhouse Creek Restoration Project Photo Log - Photo Points Notes: I. Photo point locations are shown on the plan views in the actual location the picture was taken. 2. All points are marked with a wooden stake and pink flagging tape. Photo Point 2: facing downstream Photo Point 3: facing upstream Photo Point 3: facing downstream Photo Point 4: facing downstream Photo Point 7: facing downstream Photo Point 8: facing downstream Photo Point 13: facing downstream Photo Point 14: facing downstream Photo Point 18: facing downstream Photo Point 19: facing downstream Photo Point 20: facing upstream Photo Point 20: facing downstream Photo Point 21: facing upstream Photo Point 21: facing downstream Photo Point 22: facing upstream Photo Point 22: facing downstream Photo Point 25: facing downstream Photo Point 26: facing upstream Photo Point 29: facing downstream Photo Point 30: facing downstream Photo Point 32: facing downstream Photo Point 32: facing upstream Blockhouse Creek Restoration Project: UT I Photo Log - Photo Points Notes: I. Photo point locations are shown on the plan views in the actual location the picture was taken with the exception of the first photo for Point S. Due to thick vegetation, photo taken at bridge facing downstream to provide a better view of the riffle. 2. All points are marked with a wooden stake and pink flagging tape. Photo Point 2: facing downstream Photo Point 3: facing upstream Photo Point 4: facing downstream Photo Point 6: facing upstream Photo Point 6: facing downstream Blockhouse Creek Restoration Project: UT2 Photo Log - Photo Points Notes: I. Photo point locations are shown on the plan views in the actual location the picture was taken. 2. All points are marked with a wooden stake and pink flagging tape. Photo Point 3: facing downstream Photo Point 4: facing upstream Photo Point 7: facing upstream Photo Point7: facing downstream Photo Point I Ofacing upstream Photo Point I Ofacing downstream Photo Point 11: facing downstream Blockhouse Creek Restoration Project: UT3 Photo Log - Photo Points Notes: I. Photo point locations are shown on the plan views in the actual location the picture was taken. 2. All points are marked with a wooden stake and pink flagging tape. Photo Point 3: facing upstream Photo Point 4: facing downstream i �` �' is i; ��_ � .. ��.... ��� fM6 C; •;_ ,� ~� . , „� �� 1 � '�. ., '� { . ', /� r :;. �M .1. � ��tl � . -- _ x: `� , :-. > —? ... .rx`: �.yj0. APPENDIX C. 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U.S. Army Corps of Engineers Site 0 Review Comments - October 2009 n 0 0 0 0 e Clemmons, Micky From: Brown, David W SAW [David.W.Brown @usace.army.mil) Sent: Monday, November 02, 2009 11:33 AM To: Clemmons, Micky Cc: Hair, Sarah E SAW Subject: Compliance Inspection at Blockhouse Creek Stream Restoration Project Site 02- Nov -09 Baker Engineering NY, Inc. 797 Haywood Road, Suite 201 Asheville, North Carolina 28806 Micky Clemmons, This e -mail is a follow -up to our conversation this morning pertaining to my compliance inspection on 29 -Oct at the Blockhouse Creek Stream Restoration Project site in Polk County. Overall the project site & your work looks good. As mentioned during our conservation, the following items need to be addressed with the property owner (Foothills Equestrian Nature Center): • Stall shavings & muck from the barns were noted inside the project /easement area. No placement or dumping of debris of any type inside easement area is allowed. • Several small beaver dams were found in streams near the Barn Office to areas near Show Rings B & A2. It is advised to remove these dams & the beaver(s) during the monitoring period of this project in order to minimize adverse effects(s) this may have on the project. • There is a small sand bag style dam in the main branch of Blockhouse Creek at the bridge to the show rings. This structure can impair the stream restoration. Though the dam may be outside the easement /project area, the USACE can consider this structure to be an unauthorized activity. The USACE request that the dam be removed. The USACE looks forward to receiving the 1st year monitoring report in the very near future. If need any additional information or have any questions please contact Liz Hair or me. David Brown Regulatory Specialist Asheville Regulatory Field Office U.S. Army Corps of Engineers - Wilmington District 151 Patton Avenue, Room 208 Asheville, NC 28801 -5006 828 - 271 -7980 ext. 231 david.w.brown @usace.army.mil