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HomeMy WebLinkAbout20020459 Ver 1_Monitoring Report 2010_20101101a9 ANNUAL MONITORING REPORT FOR 2010 CLAYHILL FARMS CLAYHILL FARMS MITIGATION SITE JONES COUNTY, NORTH CAROLINA TIP No. R -2105 WM (EEP Project Number .00018) 2010 Annual Monitoring Report (Year 5 of 5) Submitted to: North Carolina Department of Environment and Natural Resources Ecosystem Enhancement Program Raleigh, North Carolina Design Firm: Office of Natural Environment & Roadside Environmental Unit North Carolina Department of Transportation Raleigh, North Carolina November 2010 ANNUAL MONITORING REPORT FOR 2010 CLAYHILL FARMS CLAYHILL FARMS MITIGATION SITE JONES COUNTY, NORTH CAROLINA TIP No. R -2105 WM (EEP Project Number .00018) 2010 Annual Monitoring Report (Year 5 of 5) Axiom Environmental. Inc. r~ Ecosy.stem r. !I'll, 151 oll "1 -tf 1'KUI�K/�M Submitted to: North Carolina Department of Environment and Natural Resources Ecosystem Enhancement Program Raleigh, North Carolina Prepared by: Axiom Environmental, Inc. 20 Enterprise Street, Suite 7 Raleigh, North Carolina 27607 Design Firm: Office of Natural Environment & Roadside Environmental Unit North Carolina Department of Transportation Raleigh, North Carolina November 2010 EXECUTIVE SUMMARY The Clayhill Farms Stream and Wetland Restoration Site (Site) is located in southern Jones County, approximately 1 mile north of the Town of Kuhns and 0 75 mile north of the Carteret County /Jones County line The Site is located east of Highway 58 and is bordered by the Croatan National Forest to the north, east, and west and by various forested and residential parcels to the south Site streams, Billy's Branch and other unnamed tributaries to Hunters Creek, bisect the Site The project is located within the White Oak River Basin in United States Geological Survey (USGS) 14 -digit Hydrologic Unit 03020106010060 (North Carolina Division of Water Quality [NCDWQ] subbasin 03- 05 -01) This document serves as the 2010 Year Five Annual Monitoring Report Twenty groundwater gauges were maintained and monitored for the year 5 (2010) growing season Groundwater hydrology within 12 inches of the soil surface is occurring for greater than 12 5 percent of the growing season for year 5 (2010) at Gauges GW1 -GW9 and GW18 The remainder of the gauges were saturated or inundated for less than 12 5 percent of the growing season (Gauges GW 10 -GW 17 and GW 19 -GW20) Gauges currently below 12 5 percent of the growing season are located within the lower half of the Site near the restored stream channel Ten 10 -meter square vegetation plots were monitored for the year 5 (2010) season Based on stem counts, the average plot density monitored at this Site is greater than 290 stems per acre and is considered successful The average plot density has been measured at 672 planted stems per acre for 2010 (year 5) monitoring Doinmant species identified at the Site were overcup oak (Quercus lyrata), tupelo species ( Nyssa biflora and Nyssa sp ), and green ash (Fraxmus pennsylvanica) Nine out of the ten individual vegetation plots were above success criteria with 364 to 1578 planted stems per acre Planted stems were not documented during planting making it difficult to determine planted trees from naturally recruited trees Therefore, the number of "planted" species was based on the experience and judgment of the monitoring team, and counts for planted species may be influenced by naturally recruited stems In addition, the range of variation for survival between individual plots may be influenced by varied planting densities throughout the Site Vegetation plot 9 had no planted stems per acre remaining, however, when including natural recruits of pine (Pinus sp ), willow oak (Quercus phellos), wax myrtle (Morello cerifera), and red maple (Acer rubrum) the stem count was above 2500 stems per acre One vegetation problem area noted throughout the monitoring period consists of a large area of poor planted stem survival/bare area adjacent to the restored stream Poor survival most likely has resulted from soil infertility A lack of vegetation has resulted in aggradation of the stream channel in the vicinity of the bare area with ponding within the channel immediately upstream (Figure 3B, Appendix A) One additional stressed cross -vane resulting from a lack of footers was noted, however, the bed and banks up and downstream of the structure are stable and this is not anticipated to cause any problems Based on visual observation during the year 5 (2010) monitoring, channel geometry compares favorably with the emulated, stable E/C stream type as set forth in the detailed mitigation plan The current monitoring observations demonstrate that dimension, pattern, and profile were stable over the course of the year 5 (20 10) monitoring period In summary, the Site achieved success criteria for vegetation and stream attributes in the Fifth Monitoring Year (2010) The upper /northwestern half of the Site achieved hydrology success criteria for the Fifth Monitoring Year (2010) Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page i Table of Contents EXECUTIVE SUMMARY 1 0 PROJECT BACKGROUND 1 1 Project Description 1 2 Purpose 1 3 Project History 1 4 Mitigation Structure and Objectives 20 HYDROLOGY 2 1 Success Criteria 2 2 Hydrologic Description 2 3 Results of Hydrologic Monitoring 2 3 1 Site Data 2 3 2 Climatic Data 2 4 Hydrologic Conclusions 3 0 VEGETATION 3 1 Success Criteria 3 2 Description of Planted Areas 3 3 Results of Vegetation Monitoring 3 4 Vegetation Conclusions 4 0 STREAM ASSESSMENT . 4 1 Success Criteria 4 2 Stream Assessment Results 4 2 1 Visual Stream Observations 4 2 2 Bankfull Events 4 3 Stream Assessment Conclusions 5 0 OVERALL CONCLUSIONS/RECOMMENDATIONS 60 REFERENCES List of Figures 5 8 8 9 9 9 9 11 11 11 12 12 12 12 14 15 15 16 Figure 1 Site Location 2 Figure 2 DRAINMOD Post Construction Conditions 4 Figure 3A Monitoring Plan 6 Figure 3B Monitoring Plan 7 Figure 4 Climatic Data vs 30 -year Historic Data 10 List of Tables Table 1 Project Mitigation Structures and Objectives 5 Table 2 Summary of Groundwater Gauge Results for Years 1 through 5 8 Table 3 Stem Counts for Planted Species Arranged by Plot 13 Table 4 Verification of Bankfull Events 14 Appendices APPENDIX A YEAR 5 (2010) GROUNDWATER GAUGE GRAPHS APPENDIX B VEGETATION MONITORING PHOTOGRAPHS APPENDIX C STREAM MONITORING DATA AND PHOTOGRAPHS Clayhill Farms (final) EEP Project Number 00018 Jones County, North Carolina Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) November 2010 page n 1.0 PROJECT BACKGROUND 1.1 Project Description The Clayhill Farms Stream and Wetland Restoration Site (Site) is located in southern Jones County, approximately 1 mile north of the Town of Kuhns and 0 75 mile north of the Carteret County /Jones County line The Site is located east of Highway 58 and is bordered by the Croatan National Forest to the north, east, and west and by various forested and residential parcels to the south Site streams, Billy's Branch and other unnamed tributaries to Hunters Creek, bisect the Site (Figure 1) The project is located within the White Oak River Basin in United States Geological Survey (USGS) 14 -digit Hydrologic Unit 03020106010060 (North Carolina Division of Water Quality [NCDWQ] subbasm 03- 05 -01) Directions to the Site From Raleigh, North Carolina ➢ Travel east on US Highway 70 to Kinston ➢ Turn right and go south on NC 58 to US 17 ➢ Turn right on US 17/NC 58 and continue south approximately 6 miles to Maysville ➢ From Maysville, continue south on NC 58 approximately 8 miles to left on SR 1100 (Hunters Creek Road) ➢ Then make an immediate left onto a gravel road with a gate The gate has a combination lock to access the Site 1.2 Purpose In order to demonstrate successful mitigation, hydrologic, vegetative, and stream monitoring must be conducted for five years or until success criteria are achieved Success criteria are based on federal guidelines for wetland mitigation These guidelines stipulate criteria for hydrologic conditions, vegetation survival, and stream morphology The following report details the results of monitoring for the 2010 (year 5) growing season at the Clayhill Farms Stream and Wetland Restoration Site 1.3 Project History September 2005 2006 2006 2006 November 2006 March- November 2006 January-March 2007 July 2007 March — November 2007 July 2007 August 2008 March — November 2008 October 2008 August 2009 March — November 2009 July 2009 July 2010 March — November 2010 October 2010 Mitigation Plan Final Design (90 %) Site Construction Planting Vegetation Monitoring (Year 1) Hydrologic Monitoring (Year 1) Stream Monitoring (Year 1) Vegetation Monitoring (Year 2) Hydrologic Monitoring (Year 2) Stream Monitoring (Year 2) Vegetation Monitoring (Year 3) Hydrologic Monitoring (Year 3) Stream Monitoring (Year 3) Vegetation Monitoring (Year 4) Hydrologic Monitoring (Year 4) Stream Monitoring (Year 4) Vegetation Monitoring (Year 5) Hydrologic Monitoring (Year 5) Stream Monitoring (Year 5) Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page l Directions to the Site: %W _— '�`=.; From Raleigh, North Carolina Travel east on US 70 to Kinston -> Turn right/south on NC 58 to US 17 Turn right on US 17 /NC 58 and continue south for •- 6 miles to Maysville From Maysville, continue south on NC 58 8 miles to left on SR 1100 (Hunters Creek Road) and make an immediate left onto a gravel road. There will be a gate, which has a combination lock . � _ �t,,✓•r�,�.:.. . to access the Site. . F��pNAN NATIOM,� Fp G R Cam ! - r C� 1 �5 A I. I \ �) eel w: kl WL °rj. 1-+- T � � ,.r: — - - � J'1 —itE6 x - I � 1. ,af' • _• � , I ,` ' t r� •''�� C' y],UI , fiery. • -y f ' .r Y - -.� y_ M- DPP''• 1-'Y r I�f ti !,. J. 4. c �� I ,{ _ _ .— �i aK r _I i f1!' , -- �%. b13f1Y15 i, r"', j ',•.1, �. .�- � '•�- � .f .-- � � r Legend Yr �'�; i�,`,� • ?,'� '+ .El� L ,_r Site Boundary 0 0.1 0.2 0.4 0.6 0.8 SVS III �, ��+ -- fti ( Miles 1:24,000 ,'- ,. o' ; J' .n. -�� F SITE LOCATION FIGURE Axiom Environmental, Inc CLAYHILL FARMS RESTORATION SITE c�F 20 Enterprise Street Dale: Raeig EEP Project Number .00018 Nov 2010 Raleigh, NC 27607 (919)215 -1693 Year 5 of 5 (2010) Monitoring Report Project Jones County, North Carolina 11 10 -009 1.4 Mitigation Structure and Objectives In the early 1970s the Site was logged and portions of the Site were converted to agricultural land At that time, perimeter and interior drainage ditches were excavated and Site streams were cha inelized in support of land uses The primary mitigation activities at the Site included restoration of previously ditched and filled wetlands, vegetative enhancement of previously cleared wetlands within agricultural fields, preservation of the forested wetlands, restoration of channelized stream channel, and preservation of secondary tributaries within forested wetlands Restoration activities at the Site entailed 1) plugging and filling of feeder ditches, 2) removal of crowning within fields, 3) clearing and grading to prepare for creation of the new stream alignment, 4) construction of a stable channel, 5) filling of the abandoned stream channel with onsite materials excavated from the floodplam and other upland areas, 6) installation of a grade control structure at the downstream end of the restoration reach, 7) removal of the bridge crossing of Billy's Branch within the southeast portion of the Site, and 8) ripping/scarifing soils to prepare for planting The primary goals of the project include 1) maxiimzmg the area returned to historic wetland function, 2) establishing stable dimension, pattern, and profile along Billy's Branch, 3) expanding, enhancing, and preserving 355 6 acres adjacent to the Croatan National Forest, 4) protecting the Site with a conservation easement in perpetuity, 5) providing valuable habitat to a diverse assemblage of terrestrial and aquatic flora and fauna, 6) serving as a wildlife corridor, and 7) providing numerous wetland values including water storage, pollutant removal, aquatic /wildlife habitat, recreation, and education Project structures and objectives are summarized in Table 1 and are depicted on Figure 2 Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 3 RFNFRAL tr-r-FND rarem Margin% Mkor ConloL., MirarCcinini.r DPAINF610D LEGEND hknm NOTE'S REVISIONS lot- " --. ,ir-oarns Resiwafir n r 9538A inim, Slream Prese�'abcn = 20.*_'9 9,inear ',Eel Nnnhydrir I,rd !: = ',",x I MY& rie 'Afedatid F-Asksaflov , 2' 6 tyres Riyerne 'hellrnd E nhanwrnent =1.6 acres Riverne 'Andard F resermfinn = 3.9 aurs Nw-h-erine Wedafd Restorabon - 79.9 ivues Ni-irriverine INRIIAroj EnhancpirIgnt = 52 0 arigs 177� Effeavely Drained 1 Vmc Sob = 11.3 sems S-7.13il pit! = 1 5 ac k5 hknm NOTE'S REVISIONS lot- " --. 4b 7-, j !A IV a J Clayhill Farms Restoration Site Project No- 18.OG018 As-built klifigation Report Jones COLMY , Titus: Tit -V DRAIN MOD Y Post Construction Conditions JMMM Szki IN Ww" ECAIr. FIGURE NO 1 in. = 490 fl. Dale: FEB 2007 0-5-021 Table 1. Project Mitigation Structures and Objectives Clayhill Farms (EEP Project Number .00018) a F a u R c Linear Protect Segment or a Footage or Reach ID °' Acreage Stationing Comment Billy's Branch R P2 7931 0 +00 to 79 +31 Includes 7931 linear feet of excavation of new channel within a floodplam bench Includes 1667 8 linear feet of eight Secondary Tributaries R PI &P2 16678 -__ secondary tributaries Secondary Tributary P -- 20099 - -- Preserving forested secondary tributaries Downstream end of Preserving forested downstream reach of Billy's Branch P Billy's Branch Rvvenne Wetland R -- 21 6 --- Filling ditches, removing field crowns, and Restoration planting agricultural fields Riverme Wetland E 1 8 ___ Planting within agricultural fields Enhancement Riverme Wetland P 3 9 - -- Preserving forested rivenne wetlands Preservation Nonriverme Wetland R -- 79 9 --- Filling ditches, removing field crowns, and Restoration planting agricultural fields Nonnverme Wetland E -- 520 - -- Planting within agricultural fields Enhancement Nonriverine Wetland P 1105 Preserving forested nonnverine wetlands Preservation within the mterstream flat * R =Restoration ** PI = Priority I E = Enhancement P2 = Priority 11 P = Preservation P3 = Priority III 2.0 HYDROLOGY 2.1 Success Criteria Success criteria for wetland hydrology at Clayhill Farms require inundation or saturation within 12 inches of the ground surface for a consecutive period of 12 5 percent of the growing season, or if the hydroperiod is within 20 percent of an approved reference wetland hydroperiod within drought years The growing season for Jones County begins March 15 and ends November 11 (242 days) In order to attain hydrologic success, saturation within 12 inches of the ground surface is required for at least 30 consecutive days (12 5 percent of the growing season) 2.2 Hydrologic Description Twenty groundwater monitoring gauges have been maintained and monitored throughout the year 5 (2010) growing season (Figures 3A -313) Daily rainfall data recorded from a rain gauge maintained and monitored on the Site was used for seasonal comparison Graphs of groundwater hydrology and precipitation are included in Appendix A Clayhill Farms (final) Axiom Environmental, Inc. Monitonng Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 5 LATITUDE LONGITUDE VEG. PLOT/TYPE 77.12442 34.80796 p1 mesic pine flatwoods 77.12335 34.80683 p2 mesic pine flatwoods 77.12629 34.80637 p3 nonriverine wet hardwood 77.12560 34.80832 p4 nonriverine wet hardwood 77.13168 34.80919 p5 headwater swam 77.12943 34.81004 p6 headwater swam 77.13004 34.80805 p7 headwater swam 77.12384 34.80544 p8 nonriverine wet hardwoods 77.11757 34.80511 p9 mixed mesic hardwood 77.11664 34.80417 p10 mixed mesic hardwood LATITUDE LONGITUDE REACH 5 77.12825 34.81067 start reach 5 77.12851 34.81077 xs1 right bank 77.12847 34.81086 xs1 left bank 77.12849 34.81091 xs2 left bank 77.12860 34.81086 xs2 right bank 77.12895 34.81117 benchmk 5 77.12918 34.81132 xs3 left bank 77.12924 34.81121 xs3 right bank 77.12958 34.81147 xs4 right bank 77.12946 34.81150 xs4 left bank 77.12955 34.81155 start reach 5 GENERALLEGEND - - - Forest Margins -- Major Contour Minor Contour GW2 X U /C PIS 5 i; GW 1 / • 0 300 600 ♦ 41 Plot 7 �a SCALE IN FEET LATITUDE LONGITUDE REACH 4 77.12649 34.80966 benchmark 4 77.12571 34.80948 end reach 4 77.12607 34.80956 xs1 right bank 77.12603 34.80966 xs1 left bank 77.12621 34.80964 xs2 left bank 77.12617 34.80954 xs2 right bank 77.12688 34.80994 xs3 right bank 77.12678 1 34.81000 xs3 left bank 77.12679 34.81003 xs4 left bank 77.12690 1 34.81006 lxs4 right bank 77.12728 1 34.81015 1 end reach 4 REACH 5 � n \ \, � to � � �♦ Benchmark 5 1 X sec 4 1 1 //` XSAE3 �0� I X See 2 /� f +` -A X Sec 1 f / � . LATITUDE LONGITUDE REACH 3 77.12285 34.80777 end of reach 3 77.12296 34.80769 xs1 left bank 77.12282 34.80765 xs1 right bank 77.12293 34.80747 xs2 right bank 77.12301 34.80758 xs2 left bank 77.12370 34.80726 xs3 right bank 77.12361 34.80723 xs3 left bank 77.12363 34.80738 xs 4 left bank 77.12367 34.80734 xs4 right bank 77.12337 34.80682 benchmark 3 77.12396 34.80739 start reach 3 GW- GW6 � It Sec 4 1 Benchrark 4 % XSec1J OGW5 /61 GW9 OGW4 � � �• O Plc GW8 7Y DRAINMOD LEGEND ' Site Boundary = 355.6 acres 1 in. = 270 ft. Streams Restoration = 9598.8 linear feet Date: Stream Monitoring Reach (minimum 600 ft. in length) ` {J Permanently Monumented Cross Section 10 -009 Vegetation Monitoring Plot (> 320 Stems Per Acre) Vegetation Monitoring Plot (< 320 Stems Per Acre) OGroundwater Gauge (> 12.5% of Growing Season) O Groundwater Gauge (5% to 12.5 % of Growing Season) Groundwater Gauge (< 5% of Growing Season) Benchmark QPhotograph Location Cross -vane (Functional) Cross -vane (Stressed) I /Plot 1 J��t ° X Sec 3 1 � r It ii Axiom Environmental. Inc. .yam Ek-10, 01 � r'Rii4N A. Pd NOTES /REVISIONS Project: Clayhill Farms Restoration Site Project No. .00018 Year 5 (2010) Monitoring Report Jones County North Carolina Title: Sep, Monitoring o� Plan 1 1 1 GW13 i Scale: FIGURE NO. 1 in. = 270 ft. /1 Date: Nov 2010 ` {J Project No.: 10 -009 LATITUDE LONGITUDE VEG. PLOT /TYPE 77.12442 34.80796 pl mesic pine flatwoods 77.12335 34.80683 p2 mesic pine flatwoods 77.12629 34.80637 p3 nonmerine wet hardwood 77.12560 34.80832 p4 nonri A rine wet hardwood 77.13168 34.80919 p5 headwater swamp 77.12943 34.81004 p6 headwater swamp 77.13004 34.80805 p7 headwater swamp 77.12384 34.80544 p8 nonrkerine wet hardwoods 77.11757 34.80511 p9 mixed mesic hardwood 77.11664 34.80417 p10 mixed mesic hardwood � r w. w\ 'X Sec11 X Sec 4 i P of 1 GW 11 �. A ♦ r' \ LATITUDE LONGITUDE REACH 3 77.12285 34.80777 end of reach 3 77.12296 34.80769 xsl left bank 77.12282 34.80765 xsl right bank 77.12293 34.80747 xs2 right bank 77.12301 34.80758 xs2 left bank 77.12370 34.80726 xs3 right bank 77.12361 34.80723 xs3 left bank 77.12363 34.80738 xs 4left bank 77.12367 34.80734 xs4 right bank 77.12337 34.80682 benchmark 3 77.12396 1 34.80739 start reach 3 ki ♦ �\ W12 ♦ l�' t � (3W13 I I X See 2 GW10 X 3 Plot 2 Benchmark 3 REACH Plot 8 GENERALLEGEND -- - -- Forest Margins -- Major Contour g Minor Contour ti 0 300 600 SCALE IN FEET 1 G!7 /\ LATITUDE LONGITUDE REACH 5 77.12825 34.80966 34.81067 12571 r start reach 5 77.12851 12607 34.81077 xsl right bank xsl right bank 77.12847 xsl left bank 34.81086 34 80964 xsl left bank 77.12849 34.80954 34.81091 77.12688 xs2 left bank 77.12860 77.12678 34.81086 xs3 left bank xs2 right bank 77.12895 xs4 left bank 34.81117 34.81006 benchmk 5 77.12918 34.81015 34.81132 xs3 left bank 77.12924 34.81121 xs3 right bank 77.12958 34.81147 xs4 right bank 77.12946 34.81150 xs4 left bank 77.12955 34.81155 start reach 5 ITUDE LONGITUDE REACH 4 12649 34.80966 benchmark 4 12571 r 34.80948 end reach 4 12607 34.80956 xsl right bank 77 12603 34.80966 xsl left bank 77.12621 34 80964 xs2 left bank 77.12617 34.80954 Ixs2 right bank 77.12688 34.80994 xs3 right bank 77.12678 34.81000 xs3 left bank 77.12679 34.81003 xs4 left bank 77.12690 34.81006 xs4 right bank 77.12728 34.81015 end reach 4 REIN 1 �O f DRAINMOD LEGEND Site Boundary = 355.6 acres Streams Restoration = 9598.8 linear feet Stream Monitoring Reach (minimum 600 ft. in length) Permanently Monumented Cross Section ® Vegetation Monitoring Plot (> 320 Stems Per Acre) ■ Vegetation Monitoring Plot (< 320 Stems Per Acre) ® Groundwater Gauge (> 12.5% of Growing Season) OGroundwater Gauge (5% to 12.5 % of Growing Season) Groundwater Gauge (< 5% of Growing Season) . Benchmark QPhotograph Location 1 Cross -vane (Functional) �I Cross -vane (Stressed) Vegetation Problem Area (Bare) )li REACH 1 j enchmark 2 ri / Joe 1, 1 I i r �''� `♦ X Sec 1 16 t /� f X See 4 XSec2 ♦ X ♦ I � XS 2 6 I X Sec 3 (0 GW1 / GW17 a �- --/ g �- � �v. GW20 /zX See 4 t / / X Sec 3 a� I A /r' If 0 2 / Benchmark 1WW1t_ n / Plot 10 t 4,1� Spoil Pile If i i Axiom Environmental, Inc. Lr�i 11tepi F1W.0i'PA'M NOTES /REVISIONS Project: Clayhill Farms Restoration Site Project No. .00018 Year 5 (2010) Monitoring Report Jones County North Carolina Title: z Monitoring Plan I Scale: FIGURE NO. 1 in. = 270 ft. w B Date: Nov 2010J� Project No.: 10 -009 2.3 Results of Hydrologic Monitoring 2.3.1 Site Data Twenty gauges were maintained and monitored for the year 5 (2010) growing season Groundwater hydrology within 12 inches of the soil surface is occurring for greater than 12 5 percent of the growing season for year 5 (2010) at Gauges GW1 -GW9 and GW18 The remainder of the gauges were saturated or inundated for less than 12 5 percent of the growing season (Gauges GW10 -GW17 and GW19 -GW20) Gauges currently below 12 5 percent of the success criteria are located within the lower half of the Site near the restored stream channel The following table summarizes success criteria achievement for Site gauges Table 2. Summary of Groundwater Gauge Results for Years 1 through 5 Clayhill Farms (EEP Project Number .00018) Success Criteria Achieved/Max Consecutive Days During Growing Season Gauge (Percentage) Year 1 (2006) Year 2 (2007) Year 3 (2008) Year 4 (2009) Year 5 (2010) Yes /34 days Yes /79 days Yes /94 days Yes/ 118 days Yes /45 days GW1 (14 0 percent) (32 6 percent) 38 8 percent) 48 8 percent) (18 6 percent) Yes /68 days Yes /50 days Yes /91 days Yes /80 days Yes /34 days GW2 (28 1 percent) (20 7 percent) (37 6 percent) (33 1 percent) (14 0 percent) Yes /81 days Yes /78 days Yes /93 days Yes /118 days Yes /44 days GW3 (33 5 percent) 32 3 percent) 38 4 percent) 48 8 percent) (18 2 percent) GW4 Yes /81 days Yes /77 days Yes /91 days Yes /80 days Yes /40 days (33 5 percent) (31 8 percent) 37 6 percent) 33 1 percent) (16 5 percent) Yes /66 days Yes /50 days Yes /91 days Yes /79 days Yes /36 days GW5 (27 3 percent) 20 7 percent) (37 6 percent) 32 6 percent) (14 9 percent) Yes /37 days No /23 days Yes /88 days Yes /48 days Yes /31 days GW6 (15 3 percent) (9 5 percent) (36 4 percent) (19 8 percent) (12 8 percent) Yes /69 days Yes /50 days Yes /90 days Yes /80 days Yes /33 days GW7 (28 5 percent) (20 7 percent) 37 2 percent) (33 1 percent) (13 6 percent) Yes /68 days Yes /50 days Yes /89 days Yes /67 days Yes /35 days GW8 (28 1 percent) (20 7 ercent 36 8 ercent) (27 7 percent) (14 5 percent) Yes /38 days No /24 days Yes /89 days Yes /60 days Yes /41 days GW9 (15 7 percent) 9 9 percent) 36 8 percent) 24 8 percent) (16 9 percent) No /7 days No /5 days No /14 days No /12 days No/ 10 days GW10 (2 9 percent) (2 1 percent) (5 8 percent) (5 0 percent) (4 1 percent) No /2 days No /] day No /4 days No /3 days No /3 days GW11 (0 8 percent) (0 4 percent) 1 7 percent) (1 2 percent) (l 2 percent) No /5 days No /5 days No /8 days No /8 days No /3 days GW12 (2 1 percent) (2 1 percent) (3 3 percent) (3 3 percent) (1 2 percent) No /6 days No /1 day No /9 day No /7 days No /6 days GW13 (2 5 percent) 1 (0 4 percent) 1 (3 7 percent) 1 (2 9 percent) 1 (2 5 percent) Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 8 Table 2. Summary of Groundwater Gauge Results for Years 1 through 5 (continued) Success Criteria Achieved /Max Consecutive Days During Growing Season Gauge (Percentage) Year 1 (2006) Year 2 (2007) Year 3 (2008) Year 4 (2009) Year 5 (2010) No/ 18 days No /14 days Yes /54 days Yes /44 days No /30 days GW14 (7 4 percent) (5 8 percent) (22 3 percent) (18 2 percent) (12 4 percent) No /24 days No /] 4 days Yes /74 days Yes /44 days No /28 days GW15 (9 9 percent) (5 8 percent) (30 6 percent) (18 2 percent) (11 6 percent) No /0 days No /2 days No /9 day No /9 day No /7 days GW16 (0 percent) (0 8 percent) 3 7 percent) (3 7 percent) (2 9 percent) No /7 days No /3 days No /13 days No /11 days No /6 days GW17 (2 9 percent) (1 2 percent) (5 4 percent) (4 5 percent) (2 5 percent) No /5 days No /2 days No /15 days Yes/66 days Yes /31 days GW18 (2 1 percent) (0 8 percent) 6 2 percent) 27 3 percent) (12 8 percent) No /6 days No /4 days No /7 days No /8 days No/ 10 days GW19 (2 5 percent) 1 7 percent) 2 9 percent) 3 3 percent) (4 1 percent) No/11 days No /17 days No/ 10 days No /11 days No /6 days GW20 (4 5 percent) (7 0 percent) 4 1 percent) 1 (4 5 percent) (2 5 percent) 2.3.2 Climatic Data Climatic data for the year 5 (2010) growing season is compared to previous momtormg years growing season data and precipitation probabilities from 30 -year historical data at the New Bern Craven County Airport station (Figure 4) (NOAA 2004) The Site experienced above average rainfall for the year 5 (2010) growing season totaling greater than 49 2 inches for the months of March to October as the result of a large storm at the end of September 2010 compared to the mean 30 -year historic total for rainfall of approximately 34 6 inches 2.4 Hydrologic Conclusions Twenty gauges were maintained and monitored for the year 5 (2010) growing season, gauge results are depicted on Figures 3A -3B and graphs for each gauge can be found in Appendix A Ten of the twenty monitored gauges met success criteria of inundation/saturation within 12 inches of the surface for at least 12 5 percent of the growing season 3.0 VEGETATION 3.1 Success Criteria Wetland vegetation success criteria at Clayhill Farms require an average across the Site of 320 stems per acre of approved target species surviving for the first three years of monitoring, 290 stems per acre in year four, and 260 stems per acre in year five Clayhill Farms (final) Axiom Environmental, Inc Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 9 20 18 16 14 12 N d Z u 10 a 0 f0 8 'ii v a 6 4 2 0 Figure 4. Climatic Data vs. 30 -year Historic Data Jan Feb Mar Apr May June July Aug Sept 02006* ©2007* 6.-12008* 6.-"2009 ** 02010 ** —30% Historical*** *Onsite raingauge * *CherrypointAirport (KNKT) rain data (Weatherunderground 2010) ** *New Bern Craven County Airport 30 -year historic rain data (NOAA 2004) Clayhill Farms (final) EEP Project Number .00018 Jones County, North Carolina Axiom Environmental, Inc. Oct Nov Dec 70% Historical * ** Monitoring Year 5 of 5 (2010) November 2010 page 10 3.2 Description of Planted Areas According to the 2006 Revised Wetland and Stream Mitigation Plan for the Clayhill Farms Property, planted species were to include the following communities as described in Schafale and Weakley (1990): 1. Coastal Plain Small Stream Swamp 2. Nonriverine Wet Hardwoods Forest 3. Mesic Pine Flatwoods 4. Mixed -Mesic Hardwood Forest (Coastal Plain subtype) 5. Coastal Plain Bottomland Hardwood Forest (Blackwater subtype) 3.3 Results of Vegetation Monitoring Ten 10 -meter square vegetation plots were established as depicted in Figures 3A -3B in November 2006. Plots were surveyed in July 2010 for the year 5 (2010) monitoring season using the CVS -EEP Protocol for Recording Vegetation, Version 4.0 (Lee et al. 2006) ( http: / /cvs.bio.unc.edu/methods.htm); results are included in Table 3 and pictures are included in Appendix B. The taxonomic standard for vegetation used for this document was Flora of the Carolinas, Virginia, Georgia, and Surrounding Areas ( Weakley 2007). No reference area was studied; therefore, no comparisons could be made to reference conditions. Three plots (Plots 5, 6, and 7) were established in the Headwater Swamp, three plots (Plots 4, 3, and 8) in the Nonriverine Wet Hardwood Forest, two plots (Plots 1 and 2) in the Mesic Pine Flatwoods, and two plots (Plots 9 and 10) in the Mixed -Mesic Hardwood Forest restoration areas. Based on stem counts, the average plot density monitored at the Site is greater than 290 stems per acre and is considered successful. The average plot density has been measured at 672 planted stems per acre for 2010 (year 5) monitoring. Dominant species identified at the Site were overcup oak (Quercus lyrata), tupelo species ( Nyssa biflora and Nyssa sp.), and green ash (Fraxinus pennsylvanica). Nine out of the ten individual vegetation plots were above success criteria with 364 to 1578 planted stems per acre. Planted stems were not documented during planting making it difficult to determine planted trees from naturally recruited trees. Therefore, the number of "planted" species was based on the experience and judgment of the monitoring team, and counts for planted species may be influenced by naturally recruited stems. In addition, the range of variation for survival between individual plots may be influenced by varied planting densities throughout the Site. Vegetation plot 9 had no planted stems per acre remaining; however, when including natural recruits of pine (Pines sp.), willow oak (Quercus phellos), wax myrtle (Morelia cerifera), and red maple (Acer rubrum) the stem count was above 2500 stems per acre. 3.4 Vegetation Conclusions Based on the number of stems counted, the average plot density monitored at this Site is greater than 260 stems per acre and is considered successful for 2010 (year 5) monitoring. The average plot density has been measured at 672 planted stems per acre. Planted seedlings exhibited various degrees of vigor at the Site. Overall, vigor of Site vegetation was noted as good. One vegetation problem area was documented within the Site and is depicted on Figure 3B. The area consists of poor planted stem survival/bare area adjacent to the restored stream; photographs of this area are included in Appendix B. Poor survival most likely has resulted from soil infertility. A lack of vegetation has resulted in aggradation of the stream channel in the vicinity of the bare area with ponding within the channel immediately upstream. Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina page 1 l 4.0 STREAM ASSESSMENT 4.1 Success Criteria Success criteria dictate that based on visual observations there should be little or no change in the as -built cross - sections If a change takes place it should be determined if the change is to a more unstable condition (downcutting, erosion) or to a more stable condition (settling, increase in riparian vegetation, deposition along the banks, decrease in the width -depth ratio, decrease in cross - sectional area) The as- built longitudinal profile should show that bed features are neither aggrading nor degrading based on visual observation, however, short -term aggradation/degradation may occur depending on the peak annual discharge Bed features should be consistent with those observed in typical E- and C -type channels The as -built pattern should not change and the riffle -pool sequence should remain constant A significant coarsening of bed materials is not expected due to the sand/silt/clay substrate, therefore, bed materials will not be analyzed for stream success 4.2 Stream Assessment Results 4.2.1 Visual Stream Observations Based on visual observation during the year 5 (2010) monitoring, channel geometry compares favorably with the emulated, stable E/C stream type as set forth in the detailed mitigation plan The current monitoring observations demonstrate that dimension, pattern, and profile were stable over the course of the year 5 (2010) monitoring period Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 12 Table 3. Stem Counts for Planted Species Arranged by Plot Cla hill Farms (EEP Project Number .00018 Species Year 5 (2010) Individual Plots 0.0247 acre each Year 5 (2010) Totals Year 4 (2009) Totals Year 3 (2008) Totals Year 2 (2007) Totals Year 1 (2006) Totals 1 2 3 4 5 1 6 7 8 9 10 Betula nrgra - - 1 2 - - - 3 - - 6 6 6 6 3 Fraxrnus pennsylvamca - - 1 6 8 5 2 - - 2 1 24 24 22 20 7 Fraxrnus sp - - - - - - 1 - - - 1 1 1 4 1 Nyssa bri fora - - 11 9 - - 1 - - - 21 15 15 9 9 Nyssa sp - - 11 17 - - 5 - - - 33 37 36 32 16 Prnus palustrrs 10 3 - - - - - - - - 13 13 13 13 13 Prnus toeda - 1 - - - - - - - - 1 - - - - Pinus sp - 5 - - - - - - - 3 8 9 9 9 9 Quercus lyrata - - 9 3 10 4 - 8 - 6 40 43 42 39 41 Quercus nrgra - - - - - - - - - 2 2 1 4 6 5 Quercus pagoda - - - 2 - - - - - 3 5 6 6 6 5 Quercus hellos - - - - - - - - - - - 1 1 1 1 Quercus sp - - - - - - - - - - - 0 1 - - Taxodium distrchum - - - - - 7 5 - - - 12 12 10 10 6 Total Stems Per Plot 10 9 33 39 18 16 14 11 0 16 166 168 166 155 116 Stems Per Acre 405 364 1335 1578 728 647 567 445 40 647 672 680 672 628 470 Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 13 4.2.2 Bankfull Events Documented bankfull events are included in Table 4. Table 4. Verification of Bankfull Events Cla hill Farms (EEP Project Number .00018) Date of Data Date of Occurrence Method Photo (if Collection available) Total of 4.74 inches of rain documented by the onsite September 1, 2006 September 1, 2006 rain gauge over a two-day period from August 31 (4.06 -- inches) to September 1, 2006 (0.68 inches). Total of 4.0 inches of rain documented by the onsite August 13, 2008 August 13, 2008 rain gauge over a seven -day period from August 7 -13, - 2008. Total of 6.6 inches of rain documented at a nearby rain August 14, 2009 August 14, 2009 station* over a four -day period from August 11 -14, -- 2009. November 12, 2009 November 12, 2009 Visual observations of bankf ill as the result of 1-3 Tropical Storm Ida Visual observations of overbank event including wrack lines and sediment deposition resulting from a 1.9 February 10, 2010 February 5, 2010 inch* rainfall event on February 5, 2010 that occurred 4 after numerous rainfall events, within the 3 weeks prior, that totaled 5.26 inches. Total of 15 inches of rain documented at a nearby rain October 28, 2010 September 27, 2010 station* over a five -day period from September 26 -30, -- 2010. * Reported at the Cherrypoint Airport (KNKT) weather station (Weather Underground 2010) Clayhill Farms (final) Axiom Environmental, Inc Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina page 14 4.3 Stream Assessment Conclusions Based on stream observations, the channel geometry compares favorably with the emulated, stable E/C type stream reaches as set forth in the detailed mitigation plan. The current monitoring observations demonstrate that dimension, pattern, and profile were stable over the course of the five -year monitoring period. Stream problem areas within the Site are depicted on Figures 3A through 3B. Two problem areas were noted. The first is related to a bare area noted previously in the vegetation section (Section 3.4 Vegetation Conclusions). The second is a stressed cross -vane resulting from a lack of footers was noted; however, the bed and banks up and downstream of the structure are stable and this is not anticipated to cause any problems. Photographs of each are included in Appendix B and Appendix C, respectively. 5.0 OVERALL CONCLUSIONS /RECOMMENDATIONS Twenty gauges were maintained and monitored for the year 5 (2010) growing season. Ten of the twenty monitored gauges met success criteria of inundation/saturation within 12 inches of the surface for at least 12.5 percent of the growing season. Nine of the gauges that met success criteria are located in the upper /northwestern part of the Site. Based on the number of stems counted, the average plot density monitored at this Site is greater than 260 stems per acre and is considered successful for 2010 (year 5) monitoring. The average plot density has been measured at 672 planted stems per acre. Planted seedlings exhibited various degrees of vigor at the Site. Overall, vigor of Site vegetation was noted as good. Based on stream observations, channel geometry compares favorably with the emulated, stable E/C type stream reaches as set forth in the detailed mitigation plan. The current monitoring observations demonstrate that dimension, pattern, and profile were stable over the course of the year 5 (2010) monitoring period. In summary, the Site achieved success criteria for vegetation and stream attributes in the Fifth Monitoring Year (2010). The upper /northwestern half of the Site achieved hydrology success criteria for the Fifth Monitoring Year (2010). Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina page 15 6.0. REFERENCES Lee, Michael T , R K Peet, S D Roberts, and T R Wentworth 2006 CVS -EEP Protocol for Recording Vegetation, Version 4 0 (online) Available http Hevs bio unc edu/methods htm National Oceanic and Atmospheric Administration (NOAA) 2004 Climatography of the United States No 20, Monthly Station Climate Summaries, 1971 -2000 National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Climatic Data Center, Asheville, North Carolina North Carolina Department of Transportation (NCDOT) 2006 Revised Wetland and Stream Mitigation Plan for the Clayhill Farms Property, Jones County, North Carolina, TIP No R -2105 WM Office of Natural Environment & Roadside Environmental Unit Schafale, M P and A S Weakley 1990 Classification of the Natural Communities of North Carolina Third Approximation North Carolina Natural Heritage Program, Division of Parks and Recreation, North Carolina Department of Environment, Health, and Natural Resources Raleigh, North Carolina Weakley, Alan S 2007 Flora of the Carolinas, Virginia, Georgia, and Surrounding Areas (online) Available http Hwww herbarium unc edu/WeakleysFlora pdf [February 1, 2008] University of North Carolina Herbarium, North Carolina Botanical Garden, University of North Carolina, Chapel Hill, North Carolina Weather Underground 2010 Station in Jacksonville, North Carolina (online) Available http Hwww wunderground com /weatherstation/WXDailyHistory asp9ID= KNCJACKS9 [February 23, 2010] Weather Underground Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina page 16 APPENDIX A YEAR 5 (2010) GROUNDWATER/SURFACEWATER GAUGE GRAPHS Clayhill Farms (final) Axiom Environmental, Inc. 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Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices Clayhill Farms Vegetation Monitoring Plot Photographs Year 5 (2010) Annual Monitoring Pictures Taken July 2010 (continued) Clayhill Farms (final) Axiom Environmental, Inc- Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices Clayhill Farms Vegetation Problem Area Photographs Year 5 (2010) Annual Monitoring Pictures Taken October 2010 Problem Area Photo 1: Bare area Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices APPENDIX C STREAM MONITORING PHOTOGRAPHS Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (2010) EEP Project Number 00018 November 2010 Jones County, North Carolina Appendices Clayhill Farms Stream Monitoring Fixed -Photo and Problem Area Photographs Year 5 (2010) Annual Monitoring Pictures Taken October 2010 Clayhill Farms (final) Axiom Environmental, Inc. Monitoring Year 5 of 5 (20 10) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices Clayhill Farms Stream Monitoring Fixed -Photo and Problem Area Photographs Year 5 (2010) Annual Monitoring Pictures Taken October 2010 (continued) Clayhill Farms (final) Axiom Environmental, Inc Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices Clayhill Farms Stream Monitoring Fixed -Photo and Problem Area Photographs Year 5 (2010) Annual Monitoring Pictures Taken October 2010 (continued) t`z . Stream Photo 12: stressed cross - vane that is not anticipated to cause problems Clayhill Farms (final) Axiom Environmental, Ina Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices Clayhill Farms Stream Monitoring Fixed -Photo and Problem Area Photographs Year 5 (2010) Annual Monitoring Pictures Taken October 2010 (continued) Clayhill Farms (final) Axiom Environmental, Ina Monitoring Year 5 of 5 (2010) EEP Project Number .00018 November 2010 Jones County, North Carolina Appendices 34.811389. -77.130834 • Go 1 193 ft 'Q12 G1, o e Google Maps Page 1 of 1 Goode 200 01459 Farms NC12 -16 http:// maps.google.com/ ?ie= UTF8 &11 =34. 811272,- 77.13089 &spn = 0.085128,0.113468 &t =... 5/4/2012