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Home My WebLink About20110745 Ver 1_More Info Received_20111215UNITED $TATE9 MARINE CORP3 MARINE CORPS BASE PSC BOX 20004 CA�4P LEJEUNE NC 28592-0009 11- O'145 L�R[PLYAE}YRTOt � 5090 11 2 BEMD DEC 0 G 20f 1 From Commanding Officer, Marine Corps Base, Camp Le�eune To Commanding Officer, United States Army Corps of Engineers, Wilmington District 69 Darlinqton Avenue, Wilmington, NC 28403 Attn, Brad Shaver Sub� APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT FOR THE MAIN BATTLE TANK RAIZHEAD CONNECTOR ON MAR�NE CORPS BASE, CAMP LEJEUNE MARINE CORPS BASE CAMP I,EJEUNE NORTH CAROLINA Encl (1} Revised Pre-Construction Main Battle Tank Railhead Corps Base Camp Le�eune No�if�.ca�ion Form for the Connector Road on Marine 1 The enclosed revzsed appl�.cation to dischaxge fill into Sec�ion 404 wet].ands to construct the Main Battle Tank Rallhead Connec�ar Road on Camp Le�eune is submitted for your review and approval 2 Camp Le�eune proposes to permanently fi11 0 954 acres and temporarily impact 0 48 acres of Section 904 wetlands, to complete the pro�ect described in the application Unavoidable wetland a.mpacts will be compensated with mit�gation credits purchased from the North Carolina Ecosystem Enhancement Program (NCEEP) 3 The point of contact �or this pro�ect is Mr Martin Korenek, Environmental Conservatxon Branch, Env�.ronmen� and installatians Department, a� telephone (910) 451-7235 or email mart�.n koxenek@usmc mil � ��a�� o Sincerely, DEC 1 5 2011 I` �/��^ DENR WATER Q�U TER BRANCH OHN R TOWNSON ��DSANDSTOR Da.rector, Environmental Management By direction of the Commanding Off�.cer Copy �o NCDENR, DWQ, 401 Section NCDENR, DCM o`'aF W,atF9Qc y � > � P ^C II-o'1�l5 O�ce Use Only Corps actlon ID no RW� proJect no Fvrm Version 1 3 Dec i0 2008 Pre-Construction Notiiicaiion CN Form A A licant Informatton '1 Processmg 1 a Type(s} of approval sought from the Carps � 8eci�on 404 Permit ❑ Section i 0 Permit 1b Specify Nahonwide Permit (NWP) number N/A or General Permit (GP) number N/A fc Has the NWP ar GP number bean verified by the Corps� ❑ Yes ❑ No 1 d Type(s) of approval sought from the DWQ (check all that appiy) � 401 Water Qualify Certlficat�on — Regular ❑ Non 404 Jurisdicfional Generai Permit ❑ 401 Water Quality Certii�cation — Express ❑ Riparlan Buffer Authorizat�on 1 e ls thls notiflcation solefy for the record For the record only for DWQ 401 For the record anly for Corps Permit because written approval is not requfred? Certification ❑ Yes � No ❑ Yes � No i f Is payment into a mitigation bank or �n lieu fee pragram proposed for mitigation � Yes ❑ No of �mpacts? If so attach the acceptance letter from mitigation bank or in lieu fee program 1 g ls the project located in any of NC s twenty coastal coun�es lf yes answer 1 h � Yes ❑ Na below 1 h Is the project {oca#ecf w►thin a NC DCM Area of Environmental Concern (AEC)� ❑ Yes � No 2 Pro�ect fnformatlon 2a Name of project Cogdels Creek Mam Battie Tank Connector Road 26 County Onslow 2c Nearest murnctpality / town Jac[csonvdle 2d Subd�vlsEOn name N/A 2e NCD07 only T I P or stafe pro�ect no wA p 3 Owner Informatton 3a Name(s} on Recorded Deed USMC Camp Lejeune d E� 3b Deed Boolc and Page No N/A 3c Respons�bfs Parry {for LLC if N�A �ErLA►V�SANpSTOR�yyp�Rg�CFB appitcable) 3d Street address N/A 3e City staie zip WA 3f Teiephone no N/A 3g Fax no WA 3h Email address N/A �,�""�.� Thls document has been inventoned arxi � essl9ned the loAowtnglD � \� 12951 ,a `� 3� fi tr ;fl+3 rID � �o no! remove Page 1 of i 0 PCN Form — Version 1 3 December 10 2008 Version 4 Applicant Informatlon (if different from owner) 4a Applicant is ❑ Agent � Other specify Director of PublEc Works 4b tVame Mr Cari Baker 4c Bus�ness name Deputy PublEC Works Oi#icer (USMC) (if app!(cable) 4d Street address i 05 Mlchael Road 4e City state zip Camp Lefeune NC 28542 4f Telephone no 910 451 2213 4g Fax no 910 451 2927 4h Err�all address Carl H Baker�usmc m�l 5 AgenUConsultant Informatton (if applicable) 5a Name Ron Johnson 5b Bus�ness name AECOM (If applicable) 5c Street address 701 Corporate Center Drive Suite 475 5d Ciiy state zip RaleEgh NC 27607 5e 7elephone no 919 854 6210 5f �ax no 919 854 6269 5g Emai[ address ron johnsan�aecom com Page 2 of 10 PCN Form — Version i 3 December 10 2008 Version B Pro�ect Information and Prior Project Nistory 1 Praperty Ideniiftcatfon 1a Property identification na (tax P1N or parcel ID) WA 1 b Site coordinates (�n dec�mal degrees) l.ailtude 34 859 Long►tude 77 329 (DD DDQDDD) ( DO DDDUDDj 1c Property srze N/A acres 2 Surface Waters 2a Name of nearest body of water (stream river stc } to Cogdels Creek proposed proJeci 2b Water Quality Classiftcatlon of nearest receiwng water SC NSW 2c Rtver bas�n White Oak River Basin 3 Pro�ect Descript�on 3a Descnbe the existing conditions on the site and ttte general iand use in the v�c�niiy of the pro�ect at ihe time of thls applicaf�on The proJect is located on US Marine Corps Base Camp Lejeune Land uss ts for military train[ng roadways and utiliiy righf of ways Much of the adjacent lanci is undeveloped forested areas 3b List the total estimated acreage of all exlstfng wetlands on tF�e property 126 acres in Gogde(s Creek area 3c L�st the total estimated linear feet of alt exisUng streams (intermittent and perenniat) on the property 12 107 feet in Cognels Creek area 3d Expiain the purpose of the proposed proJect See attched pro�ect descr�ptions in Additiona! Informat�on at the end of th�s PCN Form 3e Describe the overall proJect in deta(I including the type tif equlpment to bs used Additional Informatlon can be faund at the end of tf�is PCN Fvrm 4 Jurisdict�onal Determtnattons 4a Have Jurisdictional wetiand or sfream determinations by the Carps or Sta#e been requested or obtained far this property /� Yes ❑ No pro�ecf (inc(uding all pnor phasesj in fi�e past? ❑ Unknown Commants See Additlonal Information at end of Form 4b ff the Corps made the jurisdictional determination what type � Preliminary ❑ Final of determmatron was made? 4c If yes who delfneated the jurisdictional areas? Agency/Consuitant Company Te#ra Tech iVame (3f known) Oiher 4d if yes I�st the dates of the Corps Junsd�c#ional determinaiions or State determinations and aifach documentation See Addit�onal Information attac�ed to the end of this Form 5 f'roJect History 5a Have permits or certificat�ons t�een requesied or obtainad for � Yes � No ❑ Unknown ihES pra�ect (including all pnor phases) rn the past? 5b 1f yes explain ln deiad according to help file" instrucbons N/A 6 Future Aro�ect Plans 6a Is this a phased pro�ect? ❑ Yes � Na 6b If yes expfam See AdditionaE Information at the end of this Form Page 3 of i4 PCN Form — Versian 1 3 December 10 2008 Vers�on C Proposed impacts Inve�tory 1 Impacts Summary 1 a Wh�ch sections were completed below for your praject (check ail that apply) � Wetfands ❑ Sireams trlbufanes ❑ Butfers ❑ Open Waters ❑ Pond Consiruction 2 Wetiand impacts !f there are wetiand impacts propasad on #he site then complete thts question for each wefland area impacted 2a 2b 2c 2d 2s 2f Wefland impact Type of jurisdict�oR number — Type of impact 7ype of wetland Foresfed (Cor�s 404 10 Area of impact F'errrtanent (P) or (if lcnown) DWQ -- non 404 ofher) (acres) 7em ora T W1 ❑ P� i Hand Mechanical PF�� Yes � Corps � �� Cleanng ❑ No ❑ DWQ Fiil/Hand Mechanical � Yes � Corps W2 � P� T Clearing PF01 � No ❑ DWQ P Q 003/T 0 05 W3 � P� T Fil(/Hand Mechanical PFOi/EM � Yes � Corps P 0 64/T 0 21 Clearing ❑ No ❑ DWQ FiIVHand Mechan►cal � Yes � Corps W4 j� P� T Ciearing PF01 � No ❑ pWQ P 0 27/`f" 0 i 2 Fill/Hand Mechanical � Yes � Corps W6 � P� T Clearing PF01 ❑ No ❑ DWQ P fl f 4%T a 08 FiillHand Mecharncal � Yes � Corps W6 � P� T Cteanng PF01 � No ❑ pWQ P 0 001/T 0 01 2g Total wetland impacts P 0 9b4/T 0 48 2h Commenfs 0 954 acres of permanent Impacts and 0 48 acres of iemporary lmpacts from hand/mechanical c[earing 3 Stream Impacts lf there are perennial or intermitient stream impacfs (lncluding temporary irnpacts) proposed on the site then comptete this qusstion #or all strear� sites impacted 3a 3b 3c 3d 3e 3f 3g Stream impact Type of impact Sfream name Perennial 7ype of �urisdiction Average lmpact number (PER) or (Corps 404 10 siream lengih Permaneni (P) or intermittent pWQ — non 404 width (linear Temporary (T) (iNT)? other) (feet) feet) S1 ❑ P(] T ❑ p�R ❑ Corps ❑ 1NT ❑ DWQ S2 ❑ P j] T ❑�'�R ❑ Corps ❑ INT p owa S3 ❑ P Q T ❑ PER ❑ Corps ❑ fNT ❑ DWQ �� Q ❑ .� ❑ PEFi ❑ Corps ❑ fNT ❑ DWQ �� ❑ P � � ❑ PER ❑ Corps ❑ INT ❑ DWQ S6 ❑ P 0 T ❑��R ❑ Corps ❑ INT ❑ DWQ 3h Total stream and tributary impacts � 3i Commenis IVo streams are impacted by the proposed pro�ect Thers is not a channel associated with ths wetiand areas Page 4 of 10 PCN Form — Versron 1 3 December 10 20Q8 Version 4 Open Water Impacts If there are proposed impacts to lakes ponds estuaries trlbutaries sounds the Atlantic Ocean or any other open water of the U S then indiv�duaEly list all open water impacts below 4a 4b 4c 4d 4e Open water Name of waterbody impact number (if applicable) Typs of impact Waterbody type Area of lmpact (acres) — Permanent {P) or Temporary 01 ❑A❑T 02 ❑P[]7 03 ❑P❑T Q4 ❑PQT 4f TataI open water impacts 4g Comments There are no open water impacis assoc�aied with this pro�ect 5 Pand or Lake Consfruction If ond or lake construction ro osed then com lete the chart below 5a 5b 5c 5d 5e Wetiand fmpacts (acres) Stream Impacts (feet) Upland Pond ID Proposed use or purpose of (acres) nuinber pond Flooded Fdled Excavated Flooded Fdled Excavated Fiooded P1 P2 5f Total 5g Commenis N/A 5h Is a dam high hazard permii required? � ❑ Yes ❑ Na Ifi yes permit ID no 51 Expected pond surface area (acres) N/A 5j Size of pond watershed (acres) N/A 5ic Method of construction WA Page 5 ofi 10 PCN Form — Version 1 3 Decernber i0 2Q08 Version 6 Buffer Impacts (for DWQ} lf proJect w►i[ impact a profected nparian buffer then complete the chart below If yes then individualty lisf atl buffer impacts below [f an im acts re u�re rrt�t� ation then ou MUST fill out Secfion D of this form 6a ❑ Neuse ❑ Tar Pamlico ❑ Other ProJect is ln which protecied basin? ❑ Catawba ❑ Randleman 6b 6c 6d Se 6f 6g Buffer 3mpact number -- Reason Buffer Zone 1�mpact Zone 2 impact Permanent (P) for Stream name mitigation (square feet) (square feet) or Temporary impact required7 Bi ❑ P � T ❑ Yes ❑ No 82 ❑ P [� 7 ❑ Yes ❑ No 83 ❑ P �] T ❑ Yes ❑ No dh Total buffer impacts 6i Comments N/A There are no buffer impacts associafed wlth this project D Impact Justificat[on and Mitigation 1 Avoidance and MinPmizatian 9 a Speclfically ciescribe measures taken to avoid or minimize the proposed lmpacts in designing project See Addittonal Information attached to end of appl(caton 1 b Speclfically describe measures taken #o avoid or mmimrze the proposed impacts fhrough construction techniques See Addifionat Information attached to end of applicatron 2 Compensatory Mitigafion for Impacts to Waters of the U S or Waters of the Siate 2a Daes the project require Compensatory Mitlgation for � Yes ❑ No impacis to Waters of the U S or Waiers of the State? 2b ff yes r►utrgation is requued by (check all that apply) � DWQ � Corps ❑ Mitigation bank 2c If yes which mltigation option will be used for ihis pro�ect? � Payment to in lieu fee program ❑ Permittee Responsible Mltigatfan 3 Camplete 1f Using a Mitfgation Bank 3a Name of Mit(gation Bank WA 3b Credits Purchased (attach recespt and letter) Type N/A Quantity N/A Page 6 of 10 PCN Form -- Vers�on 1 3 Decernber 10 2008 Vers�on 3c Commenis 4 Complete if Making a Payment to In Ileu Fee Program 4a Approval [eiter from in (ieu fee p�ogram is attached � Yes 4b Stream mitigatian requesied WA lmear feet 4c If using sfream mitigat�on stream temperature ❑ warm ❑ cool ❑cold 4d Buffer mitigation requesied (DWQ only) NJA square feet 4e Riparian wetland mitigation requested 1 0 acres 4f [Von npanan wetland mitiga#lon requested 0 0 acres 4g Coastal (ttdal) wetland mipgafion requested 0 0 acres 4h Cammenfs N/A S Complete If Using a Permittee Respons9bte Mitigatian Plan 5a If using a permittee responslbls mitigation plan provIde a description of the proposed mitigaiion plan N/A 8 Buffer Mittgation (State Regulated Rlparian Buffer Rules) -- requlred by DWQ 6a Wiil the pro�ect resuit in an �mpact tinnthin a{�rotecied riparian buffer ihat requires ❑ Yes � No buffer mitlgation? 6b if yes then ideniify the square feet of impact to each zone of the ripanan buffer fhat requires rnitigat�on Calculate the amount of mitigat�on required 6c 6d 6e Zone Reason for impact TotaI impact Muttip3ier Requirad mit�gatlon (square feet) (square feet) Zone 1 3(2 for Catawba) Zons 2 1 5 8f Totai buffer mitigation requlred WA 6g If buffer mitigaiion is required discuss what iype of miilgation is proposed (e g payment to private mittgation ban[c permiiiee responsibfe npanan buffer restoration payment into an approved in lieu fee fund) WA 6h Comrrzenfs N/A Page 7 of 1 Q PCN Form — Verslon 1 3 December 10 2008 Version E Stormwater Management and Diffuse Flow Plan (required by DWQ) 1 Diffuse Flow P[an 1a Does ihe pro}ect inciude or is it adJacent to profected rt�arian buffers idenUfied [� Yes � No withm one of the NC Riparian 8uffer Protection Ruies? 1 b ff yes then is a diffuse flow plan included? ff no explaln why Comments WA ❑ Yes ❑ No 2 Stormwater Mana ement Plan 2a What is the overall percent impervlousness of this prolect? < 1% 2b Does th�s project require a Stormwater Management Plan? � Yss ❑ No 2c If this pro�ect DOES NOT require a Stormwa#er Managemen# Plan explain why 2d if this pro�ect DOES require a Stormwater Martagement Plan fhen provide a brief narraBve descr�pfion of the plan ❑ Certified Local Govemment 2e Who will be respons�ble for the revfew of the Stormwater Management Alan? � DWQ Stormwater Prograrn ❑ DWQ 401 Unii 3 Certified Local Government Stormwater Rev�aw 3a In which tocal governmenYs junsdict�on is this proJec#? USMC 8ase � Phase I! 3b Which of the #ollowing iocally implemented stormwa#er management programs ❑ NSW apply (check all that apply) ❑ USMP ❑ Wafsr Supply Watershed ❑ Other 3c Has the approved Stormwater Management Plan with proof of approvai been ❑ Yes � No attached? 4 DW� Stormwater Pro ram Review � Coastal counties ❑ HQW 4a Which of the follov+nng state implemented stormwater management programs apply � pRW (check all that apply) ❑ Session Law 2006 246 ❑ Other 4b Has fhe approved Stormwater Management Pfan with proof of approvat been attached? ❑ Yes � No r 5 DWQ 40't Unit Starmwater Review 5a Does the Stormwater Management Pfan meet the approprfate requiremenfs? ❑ Yes ❑ No 5b F#ave ail of the 401 Unit submittal requirements been met? ❑ Yes ❑ No Page 8 of 10 PCN Form — Version 1 3 December 10 2Q08 Version F Supplementary Information 1 Env�ronmental Documentation {DWQ Hequirement) 1 a Does the project 3nvoive an expenditure ofi public (federal/state/local) funds or the � yes ❑ No use o# public (federaUstate) land? 1b If you answered j�es to fhe above does the pro�eci requ�re preparaiion of an environmental docurrtent pursuant to the requlremen#s of the National or State � Yes ❑ No (North Caroiina) Environrnental Po(icy Act (NEPA/SEPA)? 1 c !f you answered "yes to the above has the documen# review been finalized by the State Cleadng House? (If so attach a copy of the NEPA or SEPA fina# approval letter ) � Yes ❑ No Comments Final EIS dated December 2009 US Marines Corps Grow the Force 2 VIolafians (DWQ Requfrement} 2a Is the sfte in violai�on of DWQ We#land Ruies (15A NCAC 2H 0500) isolafed Wetland Rules (15A NCAC 2H 1300} DWQ Svrface Water or Weiland Standards ❑ Yes � No or Ripanan Buffer Rules (15A NCAC 28 020Q)? 2b Is this an after the fact psrmit applfcatian? ❑ Yes � No 2c If you answered "yes to one or both of ihe above questions provide an explariation of the v�olaiion(s) N/A 3 Cumulative Impacts (DWQ Requiremen#) 3a Wdi t�is proJect (based on past and reasonably an#icipated future impacts) resuIf in � Yes ❑ No addii�ona( developmeni which could impact nearby dowrtstreain water qual(ty? 3b If you answered "yes io the above submit a qualitative or quanf�tative cumulafive impact analysis in accordance with the mast recent DWQ policy if yau answered no pravide a short narratfve descnptlon Cumulative Impact Anafysis providad In December 2009 EIS 4 Sewage Disposai (DWQ Requirement) 4a Clearly detail the ultEmate treatment methods and dispos(tion (non discharge or dfscharge) of wastewater generated from ihe proposed proJect or availa6le capacity of the subJect faciilty Pro�ect rnnll not tnvolve the generation of wastewater Page 9 of 10 PCN Form — Vers�on 1 3 December 10 2008 Versian 5 Endangered Spectes and Destgnated Crlticat Habitat (Corps Requirement) 5a Wifi this proJect occur in or near an area with federally protected species or � Yes � No habitat? 5b Have yau checked with the USFWS concernmg Endangered Species Act � Yes � No impacis? ❑ Ralelgh 5c If yes Indicate the USFWS Field Office you have contactec! ❑ Ashevdle 5d What data sources dfd you uss to determine whether your sfite would impact Endangerad Species or Designated Crit�ca! Hab�tat? Field Surveys and MCB GIS data See additional information attached to ihe enci of th�s PCN �orm 6 Essential Fish Habifat (Corps Requfrement} 6a Will this projecf occur [rt or near an area designafed as essen�al fish habitat? ❑ Yes � No 6b What data sources did you use io determme whether your site wouid irnpact Essentlal Flsh Habitat? South Atlan#ic Habitat and Ecosystem lMS 7 His#aric or Prehistoric Cultura! Resoarces (Carps Requfrement) 7a W ili this pro�ect occur in or near an area tha# the state federal or tnbal governments have designated as having hisiorlc or cu(tural preservation (] Yes � Na siatus (e g Na#ional Historcc Trust designation or propertles s►gnificant in Narth Carolfna history and archaeotogy)? 7b What data sources did you use to determine whether your site would lmpact historic or archeolog�cal resources? Review of Camp Lejeune G18 data Historic and Cufiural Resources were also [dentf#ied in ihe 2009 Grow the Force EIS 8 Fload Zone Deslqnation (Corps Requlrement} 8a Wiii ihls pra�ect occur in a FEMA designated 100 year floadplafn? � Yes ❑ Nfl 8b (f yes explain how projecf ineets FEMA requiremenfs FEMA requirments not appiicable #o military bases 8o What source(s) did you use fo make the f(oodplam determination? NC Fiood Maps �R � �R�� f �a�-�� ApplicanUAgent's Pr�n#ed Name App[ica Agent s Signatsare Date (Agents sfgnature ts valld only �f an autho[izatfon letterfrom the appllcant is rowded Page 10 of 10 PCN Form — Version 1 3 December 10 2fl08 Verscon AECOM Additional lnformation Cogdels Creek Main Battle Tank Connecfor Road B Project lnformation and Prior Praject History 3d Exptain the purpose of the propased pro�ect A permaneni incremental increase of about 7 000 Marine Corps personnel is currentty underway at Marine Corps Base (MCB) Camp Le�eune (Base} under the Grow the Force initiative 7o support thEs growth the USMC has propased a combination of {1} new infrastructure construct�on (e g bwidmgs roads utdity linesiequrpmentj (2) demolftion and/or upgrades io ex►sting infrasiructure and {3) relocatmg existmg units and personnel to cansal�date and befter support combat missfons These axpansions are to address cuRent defic�encies as well as �n support of new facilities that were proposed for construction under Base expansion as documented in the Frnal Envrranmenfal lmpact Sfatemenf {E1S) USMC Grow fhe Force rn Norfh Carol�na (December 2009) As pari of the Base expansson new Bachelor Enits#ad Quarters (BEQ} were constructed to the south of Sneads Ferry Road in tt�e French Creek area of the Base The construciion of the 8EQ is currerrtly underway One of the consequences of the constructaon of the French Creek BEQ is fhat mam battle tank access from tank maintenance facdit�es along McNugh Bouievard and Duncan Streei and oiher a�eas south of Cogdels Creek wdl be re routed Tanks from ihe Hadnot Point and French Creek area are frequenfly shipped off Base for deployrneni mainfenance and traming Shipping the tanks by rail is the most cos# effect�ve mode of transportation The railhead for IoadEng and shippmg tanks is located norih of Ash Street between Michael Road and Rarlroad Road �nnthin the narthern portion of Hadnot Point The current access fo ihe radhead from the tank marntenancs facilities along McHugh Boulevard and Duncan Street is via a series of �mproved tank trails as shown on Figure 1 When construciion of the French Creek BEQ is camplete use of the current tanic trail wiil be closed Therefore it will be necessary to construct a new tank connector raad across Cagdels Creek to access fhe radhead Besides use of the tank trail by #anks the taRk trail will be used by other heavy equipment bemg transported to the railhead and by troop formations to access the gas chamber training faciiity on the east side of Sneads Ferry Road 3e [?escrtbe the project In detail including type of equ�pment to be used The new tank connector road �s about 3 800 feet in length and will cansis# af dirt and gravel Side stopes on the tank tra�l will be 4 1 excepf �n wetland areas were 2 1 slopes are specrfied to reduce impacts Articulated concrete block mats wdl be used an the side slopes in the wetlands ta prevent erosion of the slope The tan[c tra�l wdf be 50 feet wide This width a{lows for a M88 Recovery Vehicle (basically a tank wifh a crane mounted to it} to be aligned perpendicular to a disabled tank for I�itmg or moving the disab[ed tank far repa�r or rnamtenance The 50 foot wEdth also allows for two tanks with mine plows io safe[y pass each other Two main wetiand areas wdt be crossed by fhe connector raad The first wetland crossmg �s associated v+nth Cogdels Creek Wetlands in this area are a mix of emergent/scrub in the mid portion wifh foresied wetlands along fhe edge At the tank trad crossing no defined stream channel is present AECOM The wetfands rn this area are about 300 feet in wldth Four 6Q inct� corrugated metal pipes are proposed at the mid por�ion of the wetland ta allow for flow through the wetland The fower portion of fhe pipes wdl be buried below the ground surface and a baffle wdl be installed to prevent scouring Aluminum hea�walis wsll be consfructed to minimize the length of pipe and the width of the fil! at fhe pipes Addittonally two 36 inch corrugated pipes are proposed toward each edge of ihe wetland (one on each edge) to help mainta�n hydraulic conduciivity fhrough the wefland The second we#iand cross�ng is af a 100 faot wide wetland swaie that drains into the Cogdels Creek wetlands No channel is present m this wetiand Three 60 inch corrugafed pipes wlth a(ummum headwalls are praposed at this wetland crossing 4 Jurtsdicfional Determination 2 The wetlands were del�neated by Tetra Tech m 2010 The wetland boundary was surveyed by Charles F Riggs and Associates and a �urisdictionai package was submitted fo the US Army Corps of Engineers A Junsdfctional Determination was issued by the lJSACE on March 24 2011 (Action Id SAW 2010 01798) D Impact�ust�fication and Mit�gation 1 a SpecEfically describe measures taken to avoid or minimize the proposed impacts in designing proJect Severaf d�fferent alternat�ves were mitialfy evaluated for the connector road An option that would begin at the end of Duncan Sireet and extend across a small stream and wetland was el�minated early in fhe process because of the steep terrain on the east side of the stream and extensive wetlands along the base of the slope Three Alternatives for the location of the tanEc connector road were developed and evaluated Using a consistent 50 foot wide corridor impacis were calculated for these fhree altemative rautings of the tank tra�f as shown on Figure 2 • Aliernative 1 impacted 29 900 square feet • Alternative 2 impacted 30 700 square feet • AlternatNe 3 impacted 27 800 square feet Based upon Alternative 3 prowding the feast am�unf of wetiand �mpacts design of Aitemat�ve 3 has been carried forward !t has been slightty revised #rom �ts init►ai al�gnment and the current des�gn is shown as 3B an the fgure In addition to alignment alternatives severai br�dging alternatives were alsa evaluated and compared There are twa prtmary wetland areas thai are crossed by Alterna#e 3 one crossfng is about 350 feet wcde and the second is about 150 feei wide ihe alierna#ives evaluated included . Bridging the ent�re length of both we#(ands • A 100 ft brtdge with 125 ft filled approaches at the 350 ft wetland crassmg and a 100 #t Br�dge at the 154 ft crassing • No bridge crossing wiih culverts AECOM The foliowing table compares wetland �mpacts and cost for the three alternat�ves Alternative Wetland lmpacts Cast 350 foot bridge and 154 foot Permanent 014 acres brrdge Temporary 1 18 acres $6 518 800 2 100 foot bridges and 254 ft Permanent 0 58 acres approach in wetland Temparary 0 81 acres �2 $39 200 Culvert(s} and approach in Permanent 0 95 acres wetiand $713 020 � Temporary 0 48 acres The above estimates are for the two main wetland crossings only and do not include the cost of the remammg tank road The costs for the bridge construction are for the bridge only and do not include cosfs for a temporary const�uction bridge if required The estimated cost for the enfire tank trail wifh culverts is $1 830 000 Efforts to minimize wetland �mpacts have included • Use of 2 1 slopes m we#(and areas to minimize fhe foot print of the tanic trad • Articulated concrete block mats on the 21 slopes in the wetland to protect the slapes and prevent erosion • Elevation of fank trad through the wetlands was kept as low as possible (�nnll be overtopped during 100 year flaod event) • Additional culverts added in approach areas to mainfain hydraulic/cannectiwfy flow through the wetlands 1 b Specifica[fy describe measures taken io avoid or minim�ze the proposed impacts through construction techniques Sail and erosion control BMPs vrnil be implemented to prevent silt and sedimeni from impacting wetland areas during construct�on The specificafion of pre constructed corrugated aluminum pipes and aluminum headwalls wdl mmimize construction impacts E Stormwater Management and Qiffuse Flow Plan A stormwater management plan is currently under preparation and w�Ii be submitfed to the NC Division of Water Quality for their approval F Suppfementary Information 5 Endangered Spec[es and Designated Crt#ical Habitat A review of GIS data provided by Camp Le�eune indicated thai there are na known lacations of Threatened or Endangered spec�es En the Cogdels Creek Area Field surveys performed by AECOM 3 � 0 i� N s-- � �---:-,�� C� �' O �� V i�� c �� m Q �� ao 00 �z rots ol oa o0 0� vls a �roai Nr�rl £S Ll SZ 'V1S Ol 00 00 8l "o'1S l 1IV211 NM/l stvoisN��ua aabn3�noa z3-�ezNO� ro� �uaoN 3Nn3r� avoa� 3sve sdao� 3N�avrv �,��,� ��,«,� OIW JVdAtM � QNVWWOJ CJNtk13�N11JN3 S3LLIlI�d�TdAVN � n � � �o� d z F� a�a"� ��a b Q 906-11WZ�3d 133HS 3�S QO 00+6Z NOIlb�1S Z ll`d2�1 �iMdl 3NI�H�1`dW ��' ' � � � �, , o �--�-` ° � i � OZ o � ` � ,� J W � p ; "- r � �� ! f T`'� � � � �' � t � � �� :; << 1 ' � � l l '�' j I � �� l �� I � � � � �I !�i ��'flf ��f j' ', + 111 l l i� } � � �1 ��1 �� , .� � l l 1� � � ° � �' i , � � � W 1 � i t � 1 � I� � � � ,a � � 11� Il �; '� l � �_ 1� ��1 �� ,� 1 fl�� I � �� 1 f �� .. �ll 1r �� ,� 1� �� 1,��,, I� �l � 1�1 l � � � � 1 � 4l��it 1� I 1 � I1 I �,,,� 1 �I � � J � i ! 11I M ' l J � J � � � 11 l� 11 � � J Il 111 0 �I.�1�� ! 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