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HomeMy WebLinkAbout20130305 Ver 0_Year 2 Monitoring Report_20161031TO: Mr. Kyle Dahl US Army Corps of Engineers 69 Darlington Avenue Wilmington, NC 28403 RE: Year Two Monitoring Report for Northern New Hanover County Retail Center Wilmington Development Partners, LLC Action ID# SAW -2011-02104 & DWR Project # 13-0305 Dear Kyle: Enclosed is the Year Two Monitoring Report for the Northern New Hanover County Retail Center, located off of Market Street in Wilmington, NC. In accordance with the Individual Permit issued for this project in 2013, the applicant has performed annual vegetation and hydrology monitoring of the on-site preservation area. Wetland conditions persist within the preservation area and much of the area is ponded. The results of the monitoring are included in the enclosed report. Because the site has exhibited wetland hydrology with mostly ponded conditions and vegetation remains stable, we request that monitoring be discontinued at this time. Please contact me if you have any questions. Thank you for your assistance with this project. Sincerely, — Kim Williams Environmental Scientist Encl. Cc: Mr. David Harner, Wilmington Development Partners, LLC Mr. Chad Coburn, NC DWR Ms. Jennifer Burdette, NC DWR www.lmgroup.net s info@lmgroup.net s Phone: 910.452.0001 ® Fax: 910.452.0060 3805 Wrightsville Avenue, Suite 15 ® Wilmington, NC 28403 Northern New Hanover County Retail Center Wilmington Development Partners, LLC Action ID# SAW -2011-02104 DWR Project # 13-0305 LMG LAND MANAGEMENT GROUP LNc. 3805 Wrightsville Avenue; Suite 15 Wilmington, NC 28403 (910)452-0001 Prepared for: U.S. Army Corps of Engineers Wilmington, NC October 2016 Table of Contents List of Figures and Appendices................................................................................................ii 1.0 Introduction................................................................................................................... 3 2.0 Site Description............................................................................................................. 4 3.0 Vegetation Assessment.................................................................................................. 4 4.0 Groundwater Wells....................................................................................................... 4 5.0 Summary....................................................................................................................... 5 List of Figures and Appendices Figure 1. Vicinity map Figure 2. Project boundary and preservation area Figure 3. Site plan showing location of plots Appendix A. Site Photos of Preservation Area January 2014 Baseline Vegetation Assessment March 2015 Post -Clearing Assessment October 2015 Year One Vegetation Monitoring September 2016 Year Two Vegetation Monitoring Appendix B. Graphs of Groundwater Monitoring Data: October 2013 ) — September 2016 In 1.0 Introduction In 2013, Wilmington Development Partners, LLC obtained an Individual Permit from the US Army Corps of Engineers (USACE) and a 401 Water Quality Certification from the NC Division of Water Resources (DWR) that authorized 2.08 acres of 404 wetland impacts associated with the development of a suburban commercial center in northern New Hanover County. The project area (44.68 acres) is located within the Pages Creek watershed of the Cape Fear River Basin (Hydrologic Unit Code 03030001). In order to mitigate for the proposed wetland impacts, the applicant agreed to perform a combination of restoration and on-site preservation. Restoration consisted of buying 4.5 non -riparian wetland credits from the Northeast Cape Fear Umbrella Mitigation Bank. Additionally, 2.84 acres of wetlands and 1.08 acres of surrounding uplands located on site have been preserved using a Conservation Declaration. This preservation document allows thinning of stems that have a diameter at breast height (DBH) less than 6". In order to document that only this limited clearing is occurring and that the authorized clearing is not significantly affecting the function of this wetland, the applicant has been monitoring the vegetation and hydrology of the preservation area. In October of 2013, LMG staff performed an initial assessment of the preservation area to document existing vegetation prior to any clearing. The applicant then performed limited vegetation removal of the preservation area in March of 2015. As required by the Individual Permit, LMG revisited the site on March 27'h, 2015 to count trees within the plots in order to document if any trees with a >_ 6" DBH had been removed and a post -clearing report was submitted in June of 2015. Year One and Year Two vegetation monitoring were conducted in the fall of 2015 and 2016, respectively. This report summarizes the vegetation and hydrology data collected since 2013. Because the site has exhibited wetland hydrology with mostly ponded conditions and vegetation remains stable, we request that monitoring be discontinued at this time. 3 2.0 Site Description The 44.68 -acre project area is located at 81.07 Market Street in northeastern New Hanover County, on the northwest side of Market Street and southwest of the 140 interchange in Wilmington, NC (Figures 1 & 2). Construction with the site began in May of 2014 and has since been completed. The large retail store (Walmart) opened for business in July of 2015. 3.0 Vegetation Assessment Five permanent 0.1 -acre sampling plots were established within the preservation area in 2013 (Figure 3). One plot is located in uplands and two plots are located in each of the two wetland pockets. LMG staff performed an initial assessment of the preservation area in October of 2013 to document existing vegetation prior to any clearing. Trees with a DBH equal to or greater than 6" were identified, marked, and recorded using a hand-held GPS device. A total of 103 trees with > 6" DBH were documented within the sampling plots in 2013. The majority of these trees were located within the wetland plots. In March of 2015, vegetation removal within the preservation area was completed. A post -clearing vegetation analysis was conducted and found 100 trees with >_ 6" DBH within the five plots. A total of three trees with a DBH of >_ 6" were removed or fell within the five plots. Year One vegetation monitoring was conducted in October of 2015 and also identified 100 trees with > 6" DBH within the five plots. Year Two vegetation monitoring was conducted on September 19`h, 2016 and found 97 trees with > 6" DBH within the five plots. The absent trees included one pond pine from Plot #2, one red maple (Acer rubrum) from Plot 94, and one black gum (Nyssa sylvatica) from Plot 45. These trees appeared to have fallen down. 4.0 Groundwater Wells Two groundwater monitoring wells (WM-40s) (one well in each ofthe two wetland polygons) were installed within the preservation area in October of 2013. These wells were coupled with wetland sampling plots and were installed in accordance with methods outlined in the Wetlands Regulatory Assistance Program (WRAP) Technical Note 00-02 (Sprecher, 2000). The wells collected 4 several months of groundwater data prior to the construction of the proposed retail center in order to determine pre -construction hydrological conditions within these wetlands. Construction began in May of 2014. Approximately two and a half years of post -construction data have been collected. Hydrographs are enclosed in Appendix B and show the wetland area continues to exhibit wetland hydrology. The well installed within Plot #2 has documented a water table within 6" of the ground surface since January of 2015. The well installed within Plot #5 has documented water above the ground surface since July of 2014. 5.0 Summary In order to compensate for 2.08 acres of non -riparian wetland impact, Wilmington Development Partners, LLC purchased 4.5 non -riparian wetland credits from the Northeast Cape Fear Umbrella Mitigation Bank. Additionally, 3.92 acres of wetlands and uplands have been preserved on-site. Wetland conditions persist within the preservation area and much of the area is ponded. Because of the wet conditions documented within the site over the last three years and the stable vegetation component, we request that monitoring be discontinued at this time. 5 I �Cl7�T9f`� E LZ ui iTL Z Cf) 00% z C:) r- COqCD cq Ln LO x m < LL. Q) i fill !E > C- ul Lij Ln F- CD Lij u z 0 < O 0 a \\ - co LC L E L 0 6- 0 C6 u m CO -0 co 0 >LU C) E < Z > \ 6 ƒ / E E- C:) a E (D M 0 C'4 M _j C) —4f\ (1) 0 C) co z 0) —7 — 0 t5 ': 0 o o 0 Yom "'t4 y , a !i y+ • -� is ., � • . +�,.�A11',a-t 14C .�' tit s r } . , k�'t , � �•, ► t .1 . ; t' �i�l , XI - I • ^ ^ r r _• i�P�' �� � �.• ... ` '� r � b. ,,, Fit. Aw K Wf Air— r , i , � .� stiff � x ..,•� • , �y ' .• ►,:_ -_. � --'b•a� r ,lam; ijk •ic '�" r I j - :��"i .Li •�'at�., +" i I.., - � gy .. 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Wilmington Development Partners Plot Centers ww.LMGroup.net vv within Preservation Area October 2016 Phone: 910.452.0001 • Fax: 910.452.0060 3805 Wrightsville Ave. #15 Wilmington, NC 28403 Appendix A. Site Photos of Preservation Area Plot #1 Plot #2 E ir Retail Center in Land Management Group, Inc. Northern New Hanover County Environmental Consultants Appendix A. Wilmington Development Partners Wilmington, N.C. Baseline Photos (pre- 40-13-187 January 2014 construction and pre -clearing) Ilk a Plot #5 View of preservation area outside of plots. Retail Center in Land Management Group, Inc. Northern New Hanover County Environmental Consultants Appendix A. Wilmington Development Partners Wilmington, N.C. Baseline Photos (pre- 40-13-187 January 2014 construction and pre -clearing) Plot #1: Pre -Vegetation Removal (October 2013) Plot #1: Post -Vegetation Removal (March 201 Retail Center in Land Management Group, Inc. Northern New Hanover County Environmental Consultants Wilmington Development Partners Wilmington, N.C. I- — — . I March 2015 Appendix A. Post -Clearing Photos Plot #2: Pre -Vegetation Removal (October 2013) Retail Center in Northern New Hanover County Wilmington Development Partners 40-13-187-1 Plot #2: Post -Vegetation Removal (March 201! . f Land Management Group, Inc. Environmental Consultants Wilmington, N.C. March 2015 Appendix A. Post -Clearing Photos Plot #1 Post -Clearing: Nyssa biflora Tree Removed Plot #2 Post -Clearing: Nyssa biflora Tree Removed Retail Center in Northern New Hanover County Wilmington Development Partners 40-13-187-1 Land Management Group, Inc Environmental Consultants Wilmington, N.C. March 2015 Appendix A. Post -Clearing Photos W. R;, Plot #2 Leaning Pine Tree Pre -Vegetation Removal Plot #2 Leaning Pine Tree Post -Vegetation Removal Retail Center in Northern New Hanover County Wilmington Development Partners 13-187-1 Land Management Group, Inc. Environmental Consultants Wilmington, N.C. March 2015 Appendix A. Post -Clearing Photos Plot #3 Pre -Vegetation Removal (October 2013) Plot #3 Post - n Removal (March 2015) Retail Center in Land Management Group, Inc. Northern New Hanover County Environmental Consultants Appendix A. Wilmington Development Partners Wilmington, N.C. Post -Clearing Photos 40-13-187-1 1 March 2015 �1 tom. �• i`. •'y� t'.. -_„fir' ,�{�� ..70 _.�_•F ��:_�'�' 4{,•� • ' i1wC •w \\ •!�14 Y yy :( • O r u TM +Nay "�'� Mw' t� , ` xi, i s ' y ♦ f ♦ f Sr 3 `6 J Y • m J 1� •` w �'-..; T �� '�'�,� 'qty _. " t i te el p ,sof `� ��,�'� x psi ,. � •ew. 4+ Y', ...'�; e� r. 4�4 .�.• �° ; ^' ' z • '�'` r �!< =#� �'' . .� � � �}� ; �, � Vit'': - �' .. a f ' , # � +� �g�� � � •' ,� .. ,,-�, f . ... fig, ,_,".. ¢ F` �-s.- � �, pit �r �1R te' � i,,a � tit C ,.�.i►�ir.i r � tea+} �� t � r - . � r .4 � � a• �� .. Wit. _ {•4 ��f.,} .�i�: PPP �.�•,.y ''— 4 } 'Mj�,Me�• 7• > int .71�a �'i t �'� '.. - }= ti 1. Plot #5 Retail Center in Northern New Hanover County Wilmington Development Partners 40 -13 -187 - Land Management Group, Inc. Environmental Consultants Wilmington, N.C. October 2015 Appendix A. Year One Monitoring: Site Photos of Plots in Preservation Area age Plot #1 R Plot #2 r_ ?J Northern New Hanover County Land Management Group, Inc. Appendix A. Retail Center Environmental Consultants Year Two Monitoring: Wilmington Development Partners, LLC Wilmington, N.C. Site Photos of Plots in LM 40-13-187-2 September 2016 Preservation Area a ♦ �� •ice � ��N,' Plot #3 (Uplands) a Plot #4 Northern New Hanover County Land /Management Group, Inc. Appendix A. Retail Center Environmental Consultants Year Two Monitoring: Wilmington Development Partners, LLC Wilmington, N.C. Site Photos of Plots in LMG# 40-13-187-2 September 2016 Preservation Area Plot #5 Northern New Hanover County Land Management Group, Inc. Appendix A. Retail Center Environmental Consultants Year Two Monitoring: Wilmington Development Partners, LLC Wilmington, N.C. Site Photos of Plots in LMG# 40-13-187-2 September 2016 Preservation Area Appendix B. Graphs of Groundwater Monitoring Data October 2013 — September 2016 (seg3ul) uoi;e;idlaaad T N .a N Precipitation (in) CO Ih- (O (f) 'IT n N O (sayouI) Jana -j aa;eM aoeling/punoaF) L 0 Q W O 0 o U Z � A c LO 0 CL V N O e- N a) CL Y L N O U OcSNcj M 0 ti Q L i Z = 00 ++ di .ma) 0 to r c� a _ 0 .5 E O M N -W 0 W O T T Q W C) N c7 CO W V � M Of L O _J E Y N W3: ',1-o N 9 1O N T CL O � 0 � 0 8 E � 3 cc O ami ,! -a 'a a o =a =o0) M O a o 0) CO V3 y V Cu '= W = E 7 CU 0 V V E Q. 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