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HomeMy WebLinkAbout20120450 Ver 1_Application_20120501Office Use Only Corps action ID no 5 U DWQ project Ir2 ® 4 Form Version 1 1 3 Dec 10 2008 Page 1 of 11 PCN Form — Version 1 3 December 10 2008 Version -'Mr-Construction Notification PCN Form A Appheant Information 1 Processing 1a Type(s) of approval sought from the Corps ®Section 404 Permit ®Section 10 Permit 1b Specify Nationwide Permit (NWP) number N/A or General Permit (GP) number Individual Permit 1c Has the NWP or GP number been verified by the Corps? ® Yes ❑ No 1d Type(s) of approval sought from the DWQ (check all that apply) ® 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit ❑ 401 Water Quality Certification — Express N Riparian Buffer Authorization 1 e Is this notification solely for the record because written approval is not required? For the record only for DWQ 401 Certification ❑ Yes ® No For the record only for Corps Permit ❑ Yes N No 1f Is payment into a mitigation bank or in lieu fee program proposed for mitigation of impacts? If so attach the acceptance letter from mitigation bank or in lieu fee program ❑ Yes ® No 1g Is the project located in any of NC s twenty coastal counties If yes answer 1 h below ® Yes ❑ No 1h Is the project located within a NC DCM Area of Environmental Concern (AEC)? ® Yes ❑ No 2 Project Information 2a Name of project B 4488 Craven 176 WBS Element Number 33725 1 2 2b County Craven 2c Nearest municipality / town Havelock 2d Subdivision name N/A 2e NCDOT only T I P or state project no 8-4488 3 Owner Information 3a Name(s) on Recorded Deed North Carolina Department of Transportation 3b Deed Book and Page No N/A 3c Responsible Party (for LLC if applicable) N/A 3d Street address 105 Pactolus Highway NC 33 P O Box 1587 3e City state zip Greenville NC 27835 3f Telephone no 252 830 3490 3g Fax no 252 830 3341 3h Email address jbjohnson @ncdot gov Page 1 of 11 PCN Form — Version 1 3 December 10 2008 Version B Project Information and Prior Project History 1 Property Identification 1a Property identification no (tax PIN or parcel ID) B 4488 Craven 176 Latitude N 34 891253 Longitude W 1b Site coordinates (in decimal degrees) 76 923405 (DD DDDDDD) ( DD DDDDDD) 1c Property size N/A acres 2 Surface Waters 2a Name of nearest body of water (stream river etc ) to Southwest Prong of Slocum Creek a Tributary of Neuse proposed project River 2b Water Quality Classification of nearest receiving water C Sw NSW 2c River basin Neuse 3 Project Description 3a Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application SR 1763 Church Street is a paved secondary state road Woodlands dominate the landscape 3b List the total estimated acreage of all existing wetlands on the property 32 509 Square Feet (0 75 Acres) of 404 Wetland Impacts For The Bridge Replacement on new Alignment 3c List the total estimated linear feet of all existing streams (intermittent and perennial) on the property This site is part of a longer adjacent stream system Southwest Prong Slocum Creek = 320 Linear Feet U/T = 402 Linear Feet 3d Explain the purpose of the proposed project Due to age and condition of the existing structure Craven 176 will be replaced with a new bridge on a new location to serve as a better service road access along the Highway 70 corridor The old bridge will be removed and designed to tie into the new service road by new location No Detour 3e Describe the overall project in detail including the type of equipment to be used The Existing 116 Long By 25 Wide Concrete Bridge will be replaced with a Proposed 300 Long by 42 Wide Concrete Bridge on New Alignment A 10 x 6 reinforced box culvert will be installed on the church street realignment Excavators Dump Trucks and Crane Trucks will be used for the Bridge To Bridge Replacement 4 Jurisdictional Determinations 4a Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / El Yes [:1 No Unknown project (including all prior phases) in the pasty Comments 4b If the Corps made the jurisdictional determination what type ®Preliminary [:1 Final of determination was made? 4c If yes who delineated the jurisdictional areas? Agency /Consultant Company NCDCM Name (if known) Stephen Lane and Jay B Johnson Other NCDOT 4d If yes list the dates of the Corps jurisdictional determinations or State determinations and attach documentation March 2011 5 Project History 5a Have permits or certifications been requested or obtained for ❑ Yes ❑ No ® Unknown this project (including all prior phases) in the past? 5b If yes explain in detail according to help file instructions Page 3 of 11 PCN Form — Version 1 3 December 10 2008 Version 6 Future Project Plans 6a Is this a phased project? ❑ Yes ® No 6b If yes explain Page 4 of 11 PCN Form — Version 1 3 December 10 2008 Version C Proposed Impacts Inventory 1 Impacts Summary la Which sections were completed below for your project (check all that apply) ® Wetlands ® Streams tributaries ® Buffers ❑ Open Waters ❑ Pond Construction 2 Wetland Impacts If there are wetland impacts proposed on the site then complete this question for each wetland area impacted 2a 2b 2c 2d 2e 2f Wetland impact Type of jurisdiction number — Type of impact Type of wetland Forested (Corps 404 10 Area of impact Permanent (P) or (if known) DWQ —non 404 other) (acres) Temporary T W1 ®P ❑ T Fill Riparian ❑ Yes ® Corps 0 006 Herbacious ® No ® DWQ W2 ® P ❑ T Fill Bottomland ® Yes ® Corps 079 Hardwood Forest ❑ No ® DWQ W3 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W4 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W5 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W6 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ 2g Total wetland impacts 0 75 Acres 2h Comments 32 509 Sq Ft Impacts 3 Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site then complete this question for all stream sites impacted 3a 3b 3c 3d 3e 3f 3g Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact number (PER) or (Corps 404 10 stream length Permanent (P) or intermittent DWQ — non -404 width (linear Temporary (T) (INT)? other) (feet) feet) S1 ®P ❑ T Relocation of U/T Slocum Creek ® PER ® Corps 15 232 Stream ❑ INT ® DWQ S2 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S3 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S4 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S5 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S6 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ 3h Total stream and tributary impacts 232 LF 31 Comments 232 Linear Feet of Stream Impacts Page 5 of 11 PCN Form — Version 1 3 December 10 2008 Version 4 Open Water Impacts If there are proposed impacts to lakes ponds estuaries tributaries sounds the Atlantic Ocean or any other open water of the U S then individually list all open water impacts below 4a 4b 4c 4d 4e Open water Name of waterbody impact number — (if applicable) Type of impact Waterbody type Area of impact (acres) Permanent (P) or Temporary T 01 ❑P ❑T 02 ❑P ❑T 03 ❑P FIT 04 ❑P ❑T 4f Total open water impacts None 4g Comments None 5 Pond or Lake Construction If pond or lake construction proposed the complete the chart below 5a 5b 5c 5d 5e Wetland Impacts (acres) Stream Impacts (feet) Upland Pond ID Proposed use or purpose (acres) number of pond Flooded Filled Excavated Flooded Filled Excavated Flooded P1 P2 5f Total None 5g Comments None 5h Is a dam high hazard permit required ❑ Yes ❑ No If yes permit ID no 51 Expected pond surface area (acres) 5j Size of pond watershed (acres) 5k Method of construction 6 Buffer Impacts (for DWQ) If project will impact a protected riparian buffer then complete the chart below If yes then individually list all buffer impacts below If any impacts require mitigation then you MUST fill out Section D of this form 6a ® Neuse ❑ Tar Pamlico ❑ Other None Project is in which protected basin? ❑ Catawba ❑ Randleman 6b 6c 6d 6e 6f 6g Buffer impact number — Reason Buffer Zone 1 impact Zone 2 impact Permanent (P) or for Stream name mitigation (square feet) (square feet) Temporary T impact required? B1 ®P ❑ T Fill Southwest Prong Slocum El Yes 0 Sq Ft 11 Sq Ft Creek ® No B2 ❑ PEI T El Yes ❑ No B3 ❑P ❑T El Yes ❑ No 6h Total buffer impacts 11 Sq Ft 61 Comments 11 Sq Ft Impacts Page 6 of 11 PCN Form — Version 1 3 December 10 2008 Version D Impact Justification and Mitigation 1 Avoidance and Minimization 1a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project See narrative lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques See narrative 2 Compensatory Mitigation for Impacts to Waters of the U S or Waters of the State 2a Does the project require Compensatory Mitigation for impacts to Waters of the U S or Waters of the State? ® Yes ❑ No 2b If yes mitigation is required by (check all that apply) ® DW Q ® Corps 2c If yes which mitigation option will be used for this projects ❑ Mitigation bank ❑ Payment to in lieu fee program ® Permittee Responsible Mitigation 3 Complete if Using a Mitigation Bank 3a Name of Mitigation Bank Croatan Mitigation Bank 3b Credits Purchased (attach receipt and letter) Type Quantity 3c Comments Wetland mitigation is onsite and balance debited from the Croatan Mitigation Site including stream mitigation as well (See verification attached) 4 Complete if Making a Payment to In lieu Fee Program 4a Approval letter from in lieu fee program is attached ❑ Yes 4b Stream mitigation requested linear feet 4c If using stream mitigation stream temperature ❑ warm ❑ cool ❑cold 4d Buffer mitigation requested (DWQ only) 0 square feet 4e Riparian wetland mitigation requested acres 4f Non riparian wetland mitigation requested acres 4g Coastal (tidal) wetland mitigation requested acres 4h Comments 5 Complete if Using a Permittee Responsible Mitigation Plan 5a If using a permittee responsible mitigation plan provide a description of the proposed mitigation plan See plan attached Page 7 of 11 PCN Form — Version 1 3 December 10 2008 Version 6 Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ 6a Will the project result in an impact within a protected riparian buffer that requires ❑ Yes ® No buffer mitigation? 6b If yes then identify the square feet of impact to each zone of the riparian buffer that requires mitigation Calculate the amount of mitigation required 6c 6d 6e Zone Reason for impact Total impact Multiplier Required mitigation (square feet) (square feet) Zone 1 3 (2 for Catawba) Zone 2 1 5 6f Total buffer mitigation required None 6g If buffer mitigation is required discuss what type of mitigation is proposed (e g payment to private mitigation bank permittee responsible riparian buffer restoration payment into an approved in lieu fee fund) N/A 6h Comments Page 8 of 11 PCN Form — Version 1 3 December 10 2008 Version E Stormwater Management and Diffuse Flow Plan (required by DWQ) 1 Diffuse Flow Plan 1a Does the project include or is it adjacent to protected riparian buffers identified ® Yes ❑ No within one of the NC Riparian Buffer Protection Rules? lb If yes then is a diffuse flow plan included? If no explain why Comments Road on new alignment will discharge stormwater into vegetated wetlands Existing road side ditches will discharge into wetlands outside the buffers ® Yes ❑ No There are no weep holes in the proposed bridge thus eliminating stormwater run off from the proposed bridge deck Stormwater from bridge deck is being carried out side of buffers and being released onto a disipater pad into wetlands for treatment 2 Stormwater Management Plan 2a What is the overall percent imperviousness of this project? N/A Roadway /Bridge Project % 2b Does this project require a Stormwater Management Plan? ® Yes ❑ No 2c If this project DOES NOT require a Stormwater Management Plan explain why 2d If this project DOES require a Stormwater Management Plan then provide a brief narrative description of the plan Road on new alignment will discharge stormwater into vegetated wetlands Existing road side ditches will discharge into wetlands outside the buffers There are no weep holes in the proposed bridge thus eliminating stormwater run off from the proposed bridge deck Stormwater from bridge deck is being carried out side of buffers and being released onto a disipater pad into wetlands for treatment ❑ Certified Local Government 2e Who will be responsible for the review of the Stormwater Management Plan? ® DWQ Stormwater Program ® DWQ 401 Unit 3 Certified Local Government Stormwater Review 3a In which local government s jurisdiction is this project? N/A ❑ Phase 11 3b Which of the following locally implemented stormwater management programs ❑ NSW ❑ USMP apply (check all that apply) ❑ Water Supply Watershed ❑ Other N/A 3c Has the approved Stormwater Management Plan with proof of approval been ❑ Yes ® No attached? 4 DWQ Stormwater Program Review ® Coastal counties ❑ HQW 4a Which of the following state implemented stormwater management programs apply ❑ ORW (check all that apply) ❑ Session Law 2006 246 ❑ Other 4b Has the approved Stormwater Management Plan with proof of approval been attached? ❑ Yes ® No 5 DWQ 401 Unit Stormwater Review Page 9 of 11 PCN Form — Version 1 3 December 10 2008 Version 5a Does the Stormwater Management Plan meet the appropriate requirements? ® Yes ❑ No 5b Have all of the 401 Unit submittal requirements been met? ® Yes ❑ No F Supplementary Information 1 Environmental Documentation (DWQ Requirement) la Does the project involve an expenditure of public (federal /state /local) funds or the ® Yes ❑ No use of public (federal /state) land? 1b If you answered yes to the above does the project require preparation of an environmental document pursuant to the requirements of the National or State ❑ Yes ® No (North Carolina) Environmental Policy Act (NEPA/SEPA)? 1c If you answered yes to the above has the document review been finalized by the State Clearing House? (If so attach a copy of the NEPA or SEPA final approval letter ) ❑ Yes ® No Comments 2 Violations (DWQ Requirement) 2a Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500) Isolated Wetland Rules (15A NCAC 2H 1300) DWQ Surface Water or Wetland Standards ❑ Yes ® No or Riparian Buffer Rules (15A NCAC 2B 0200)? 2b Is this an after the fact permit application? ❑ Yes ® No 2c If you answered yes to one or both of the above questions provide an explanation of the violation(s) 3 Cumulative Impacts (DWQ Requirement) 3a Will this project (based on past and reasonably anticipated future impacts) result in ❑ Yes ® No additional development which could impact nearby downstream water quality? 3b If you answered yes to the above submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent DWQ policy If you answered no provide a short narrative description 4 Sewage Disposal (DWQ Requirement) 4a Clearly detail the ultimate treatment methods and disposition (non discharge or discharge) of wastewater generated from the proposed project or available capacity of the subject facility N/A Page 10 of 11 PCN Form — Version 1 3 December 10 2008 Version 5 Endangered Species and Designated Critical Habitat (Corps Requirement) 5a Will this protect occur in or near an area with federally protected species or Cj Yes ® No habitat? 5b Have you checked with the USFWS concerning Endangered Species Act ❑ Yes ® No impacts? ® Raleigh 5c If yes indicate the USFWS Field Office you have contacted ❑ Asheville 5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? Onsite Field Determination No Effect 6 Essential Fish Habitat (Corps Requirement) 6a Will this protect occur in or near an area designated as essential fish habitat? ❑ Yes ❑ No 6b What data sources did you use to determine whether your site would impact Essential Fish Habitat? Determination was made by Mr Travis Wilson NCWRC September 1 2009 Moratorium February 15 September 30 i Historic or Prehistoric Cultural Resources (Corps Requirement) 7a Will this protect occur in or near an area that the state federal or tribal governments have designated as having historic or cultural preservation E] Yes ® No status (e g National Historic Trust designation or properties significant in North Carolina history and archaeology)? 7b What data sources did you use to determine whether your site would impact historic or archeological resources? NCSHPO 8 Flood Zone Designation (Corps Requirement) 8a Will this protect occur in a FEMA designated 100 year floodplain? ®Yes ❑ No 8b If yes explain how protect meets FEMA requirements Bridge designed to no rise standards 8c What source(s) did you use to make the floodplam determination? FEMA FIRM Maps Jay B Johnson dL—A�-2 April 25 2012 Applicant /Agent s Printed Name Cate ppi nt/ gent s Signature (Agent s signatu vale ni an authorization letter from the applicant is provided) Page 11 of 11 PCN Form – Version 1 3 December 10 2008 Version r' BRIDGE REPLACEMENT B -4488 CRAVEN 176 SR 1763, CHURCH ROAD OVER SOUTHWEST PRONG OFSLOCUM CREEK HAVELOCK USGS QUAD MAPAND SHEET NUMBER 15 OF THE SOIL SURVEY OF CRAVEN COUNTY LOWER NEUSE 03020204 FIRM PANEL 6422 J SOUTHWEST PRONG MAP NUMBER 3720642200 J SLOCUM CREEK C;Sw;NSW MARCH], 2011 ''• 5 � Mel �, _ r ' � � � �a CRAVEN 176 • ; a' t �' Oa Y= 421865.2476 `` ec • ?' '�` art r X 2622652.1865 ' Al au rt n r rr �.- N 34 -53 -29 h: Y < -~ ' W 76n- 55' -24" N 34.891253 DEGREES • r .,Y W 76.923405 DEGREES f a y• a� /1 /s y i�'i a CC Blvd ra `''� s C ? •r, s o ., ., ant r r ;-CRQATA v 28 s Ri d F E 27 26 1 inch = 2,000 feet 0 875 1,750 3,500 5,250 7,000 Feet �S A. /i ^ y { 4 Wetland Restoration Plan Bridge Replacement over Southwest Prong of Slocum Creek Craven County STIP B 4488 WBS No 33725 1 1 April 26 2012 10 BASELINE INFORMATION The North Carolina Department of Transportation (NCDOT) proposes to replace Bridge No 176 on SR 1763 over Slocum Creek (STIP B 4488) in Craven County The study area lies in the coastal plain physiographic region of North Carolina Topography in the project vicinity is nearly level to gently rolling Elevations in the study area range from 5 to 20 ft above sea level Land use in the project vicinity consists primarily of forested, low density commercial and residential development Water resources in the study area are part of the Neuse River Basin (U S Geological Survey [USGS] Hydrologic Unit 03020204) Three streams, Slocum Creek and two unnamed tributaries to Slocum Creek were identified in the study area No waters classified as High Quality Waters (HQW), Water Supplies (WS I undeveloped watersheds or WS II predominately undeveloped watersheds), or Outstanding Resource Waters (ORW) occur within 1 0 mile of study area The Craven County Soil Survey identifies four soil types within the study area The soils are Goldsboro Loamy fine sand (GoA) Masontown mucky fine sandy loam and Muckalee sandy loam (MM), Norfolk loamy fine sand (NoB) and Norfolk Urban land complex (NuB) All of these soils represent hydric soil type composition except the Norfolk Urban land complex 2 0 SITE SELECTION TIP B 4480 will involve replacing bridge No 176 on SR1764 over Slocum Creek in Craven County as well as performing improvements to the approach roadway of the replacement structure The existing 116 foot long by 25 foot wide concrete bridge will be replaced with a proposed 300 foot long by 42 foot wide concrete bridge on new alignment Permanent wetland impacts associated with this project are 0 75 acres (34 729 Sq ft ) of Riverine Swamp Forest According to the NRTR dated May 2010 the wetlands adjacent to Slocum Creek are classified as Riverine Swamp Forest Its canopy is dominated by laurel oak red maple bald cypress and green ash The causeway for the southern approach to the bridge is situated in the floodplain of Slocum Creek and has wetlands along the toe of slope on both sides The causeway is approximately 60 ft wide and 478 ft long 3 0 SITE PROTECTION INSTRUMENT The mitigation area will be located within the NCDOT Right of Way for the project It will be managed to prohibit all use inconsistent with its use as mitigation property including any activity that would materially alter the biological integrity or functional and educational value of the site, consistent with the mitigation plan The site will be placed on the NES mitigation geodatabase After closeout the site will placed in the NCDOT Stewardship Program for long term management and protection 4 0 OBJECTIVES The goal of the project is to restore 0 66 acres of Riverine Swamp Forest wetlands The functional restoration of the wetland site will be accomplished through the removal of 28,680 square feet (0 66acres) of existing causeway 5 0 MITIGATION WORK PLAN The mitigation area will be constructed in conjunction with STIP B 4488 Construction activities involve pavement and causeway removal, site grading and site planting Once the pavement and causeway have been removed the site will be graded to match existing adjacent reference wetland elevation The site will be ripped and disked if necessary The Natural Environment Section shall be contacted to provide construction assistance to ensure that the mitigation areas are constructed appropriately Following the successful completion of site grading, the wetland restoration area will be planted on 8 foot centers with native species typical of the adjacent wetland community including American sycamore (Platanus occidentahs), water oak (Quercus nigra), river birch (Betula nigra) and green ash (Fraxinus pennsylvanica) depending on seedling availability Native grass seed and mulch will also be placed on any disturbed areas within the wetland restoration site for stabilization purposes according to the guidance and standard procedures of NCDOT s Roadside Environmental Unit An as built report will be submitted within 60 days of completion of the project 6 0 PERFORMANCE STANDARDS Success for vegetation monitoring within the wetland areas are based on the survival of at least 260 stems of five year old trees at year five The target elevation is based on the reference wetland areas and will be verified during construction Constructing the site at the adjacent wetland elevation will ensure the hydrology in the restored area is similar to the hydrology in the reference area 7 0 MONITORING REOUIREMENTS Upon successful completion of construction the following monitoring strategy is proposed for the 0 66 acres of wetland restoration No specific hydrological monitoring is proposed for the wetland mitigation areas Vegetation monitoring will consist of counts of planted stems within 50 x 50 foot plots established within the restoration area These monitoring activities will be conducted for five years and documented in an annual report distributed to the regulatory agencies 8 0 OTHER INFORMATION The wetland plant community associated with B 4488 adjacent to Slocum Creek is a Rrverine Swamp Forest based on NCWAM field assessment methodology This is the reference wetland that will be used for the project 9 0 DETERMINATION OF CREDITS Per the NCDOT plans and 401/404 permit application for STIP B 4488, NCDOT proposes to restore 0 66 acres of riverine wetlands for permanent impacts associated with the project at a 1 1 ratio An as built report will be submitted within 60 days of completion of the project to verify actual constructed acreage The success of the mitigation area and determination of total credits will be based upon successful completion and closeout of the monitoring period 9 1 CREDIT RELEASE SCHEDULE NCDOT proposes immediate full release of the proposed 0 66 acres of restored riverine wetlands at a 1 1 ratio as on site mitigation for the riverine wetland impacts associated with B 4488 10 0 GEOGRAPHIC SERVICE AREA The proposed Geographic Service Area (GSA) for the mitigation area is composed of the Hydrologic Cataloging Unit (HUC) 03020204 All wetland credits will be used for B 4488 110 MAINTENANCE PLAN The site will be held by NCDOT and placed on the NES mitigation geodatabase Once monitoring is completed and the site is closed out it will be placed in the NCDOT Stewardship Program for long term maintenance and protection If an appropriate third party recipient is identified in the future, then the transfer of the property will include a conservation easement or other measure to protect the natural features and mitigation value of the site in perpetuity 12 0 LONG TERM ADAPTIVE MANAGEMENT PLAN The site will be managed by the NCDOT according to the mitigation plan In the event that unforeseen issues arise that affect the management of the site any remediation will be addressed by NCDOT in coordination with the Interagency Review Team 13 0 FINANCIAL ASSURANCES NCDOT is held by permit conditions associated with B 4488 to preserve the wetland restoration area NCDOT has established funds for each project within each Division to monitor the mitigation site and to protect it in perpetuity Brame, Bill Jr From Johnson Jay B Sent Monday April 30 2012 8 22 AM To Brame Bill Jr Subject FW B 4488 Attachments B 4488revised2 doc Original Message From Paugh Leilani Y Sent Friday April 27 2012 3 48 PM To Steffens Thomas A SAW Johnson Jay B Subject B 4488 Hi Tom I have attached the mitigation plan for the onsite wetland restoration for B 4488 1 also confirm that we will debit the Croatan WMB at a 2 1 ratio for the remaining wetland and stream mitigation need based on the following impact numbers Permanent Stream Impacts = 232 linear feet Croatan WMB debited 464 feet of stream restoration 404 Wetland Impacts = 32 509 sq ft or 75 acres Onsite mitigation = 28 680 sq ft or 66 acres Wetland mitigation needed = 3829 sq ft or 09 acres Croatan WMB debited 0 18 acres of riverine wetland restoration If you have any questions please let me know Thanks LeiLani Email correspondence to and from this sender is subject to the N C Public Records Law and may be disclosed to third parties 1 STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION BEVERLY EAVES PERDUE GOVERNOR Mr Stephen Lane NCDCM 400 Commerce Ave Morehead City N C 28557 252 808 2808 ext 208 4/18/2012 Subject CAMA Mayor Permit application for Craven 176 B -4488 EUGENE A CONT , 7R SECRETARY Dear Mr Lane, In reference to project B 4488 Craven bridge #176 in Craven County, (WBS element number 33725 1 2) Please find attached a CAMA Mayor Permit application and drawings indicating scope of work to be done Project B -4488 replaces bridge number 176 on Church Street over Southwest Prong Slocum Creek in Craven County The new bridge will be constructed along the US 70 service road alignment and Church Street will be tied into the service road The new alignment will provide better connectivity for access to businesses, residences, and community centers along the service road This will reduce the number of trips that need to access US 70 The proposed alignment for the relocated portion of Church Street was determined based on existing development on Church Street and providing a perpendicular connection with the service road Tlus design reduces the impact to the residential property (condemning property) and provides a safe intersection of the service road and the relocated portion of Church Street A 450 foot centerline radius was used on the relocated portion of Church Street to minimize the overall impacts to both the natural and built environment NCDOT proposes the installation of a 10 x 6' reinforced concrete box culvert at the location the relocated portion of Church Street crosses the unnamed tributary to the southwest prong of Slocum Creek The drainage area for this structure is 113 acres It is a generally accepted practice for NCDOT to design a box culvert in the coastal plain region for drainage areas less than 3200 acres (5 square miles) in the coastal plain region. The culvert is designed on at a skew angle of 120 degrees to minimize the impact to the existing stream, maximize the length of open channel, and to protect the proposed embankment material for the new bridge on the service road A greater skew angle would direct the discharge from the culvert more toward the embankment and may result in long term maintenance and stability issues for the roadway embankment The proposed culvert alignment does not affect the hydrology of the adjacent wetlands Upstream of the culvert the unnamed tributary has been significantly modified m the past Within a few hundred feet upstream of the culvert the stream is piped with a 36 inch pipe A number of design elements have been incorporated into the project to avoid and rmm uze project mnpacts to the natural environment The roadway slopes are designed with 2 1 slopes instead of 3 1 slopes to mmmm».e 404 wetland impacts The profile grade for the relocated portion of Church Street is designed with a sag to get the new roadway as low as possible to minimize its footprint Deck drams have been eliminated on the new bridge The storm water is being drained through the wetlands outside of the buffer zones as requested to increase treatment prior to entering Slocum Creek Sheet piles are being used for temporary shoring instead of fill material The existing causeway which was prior fill in wetlands is being removed down to the elevation of the adjacent wetlands to provide on -site mitigation for almost all of the 404 wetland impacts The balance of impacts will be obtained from EEP or other NCDOT wetland banks Due to the amount of wetland impacts a USACE individual application (ENG FORM 4345) has been completed for this project and a completed PCN form has been sent to the USACE and DWQ for review Please refer to the detailed drawings for the proposed project Should you have any questions please give me a call Cc Garcy Ward DWQ Tom Steffens USACE Since ly, J J n II I I REVISED 11 1391 BY E L R CHECKED BY G R P ADDED 8 22 89 00 m no nn I r ° m n n F Z O m N n � O m I I i m m K m 0 � m D x O m n m 9 � 0 I T m m � Z O N to Z o N Q C 0 o n n m D Y X I 00 00 I I C r ° n n mm n n mm � ° n n frl < H D Z X �I� loh I II N n °n z x x x x ° m u O HZOfH*1Z fx*1 !n H m T-.4 N Z n pH -.�Z z o 0 I 1 a O b p 2 n � 0 O C D Z Z H Z c I I C pTm an oZ.Hn II III nox TO�Nj H Om G7 � 0 001111- LammN milli D tai, In-'K I I I I I I I I I II I I I I I I I I I I I II I I I i I I I I I I I I I I I I I I I l J N I p H o Z z D A r 3> N M X z M I -1 Om�rI 0 p -n C0 O -n --1 ;0 T. x --i Z II M (A x D i00 �— O-) O II a m Z M. -t- EL 15 I I 1 I I I 1 I I EL 10 1 1 EL 13 EL 08 1 1 EL 10 EL 13 EL 13 EL 21 I 1 1 EL 1 2 I 1 I I I I I 1 EL 1 1 I K n 0 o 00 m N Fi o C r r ° 0 -0 M I i mo cH I D x O m x D m 0 x T o ° O N to Z o a i 0 o n n m D I I I X I C) n I I C r ° n I � ° I II frl < H D Z X H H o I II N n 001111- LammN milli D tai, In-'K I I I I I I I I I II I I I I I I I I I I I II I I I i I I I I I I I I I I I I I I I l J N I p H o Z z D A r 3> N M X z M I -1 Om�rI 0 p -n C0 O -n --1 ;0 T. x --i Z II M (A x D i00 �— O-) O II a m Z M. -t- EL 15 I I 1 I I I 1 I I EL 10 1 1 EL 13 EL 08 1 1 EL 10 EL 13 EL 13 EL 21 I 1 1 EL 1 2 I 1 I I I I I 1 EL 1 1 I K n T F 00 m r 4 C r O C 0 -0 T Z I i mo cH nmH rmx Z x O m x D m 0 x T N O O N to tr lr a ti I m n n m D n X o n n r n r n Z N In .I ° � < H D Z X H H o X, N n °n z x x x x ° m u O HZOfH*1Z fx*1 !n H m T-.4 N o ? s pH -.�Z z o � C 0 a O b p 2 n � 1 O C D Z Z H Z c ZCf*1HOODZ m�x-OM U0, C pTm an oZ.Hn off nox TO�Nj H Om G7 H m n -1 2 m m m o M m H Q � m ZC r HC Gn C I T mZ0 0y Hz z H mix I"�HO r ~? a D rT 0 x H H O O r D x T O N D (D")� x n mC Hxm�ZOmy Om-lox xmvxx ZT 2r r O �n TH r0 <H � y r Z Z H < N ° m m n0 0x N n N N �V12 mD HDm-In N O]O Dx N NH C OZ rH mH xZ n C M COO O m x a O D O o * m m n r e7 O n H r N Z O > M D M -I m to H r z p7 N to n T N w � Q, r ^j O n o w D —I H 0 Z N 7z M = 0-0 <x< M m m C A O O m O -0 z -0 M H < H CC) C 0 Zj -i O O° m n m O > Z M -U C-) O < H D Z -r1 o� O z p O o p O 0 Z „ o > D � O D � < D !n n CD 0 i NT z V n H r H a N H O M 0 M n M n m LA = 0 D r H H N n ti M � O a 1 M O z c L) � H 2 n c r M N x H ~ D w K ,s / / Co CD 0 TO DDxmxm HN N N D n m N 00 M m H H O H Z n C n y xoDZmz / y� no stem 2 no 2:0 2 n H R H O m `� D A S O n = zo n x m T 2 H 0 D D � M m - O m°o m o x 0 D � c o �7 ° z r < n H < r N H n o -1 (7 I O 0 \t Z -0 7 z 0 D N a aOwNN LO ... 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