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Home My WebLink About20120202 Ver 1_More Info Received_201205250 STEWART www t w it g m May 25 2012 1 a - 0'Q-0 a Division of Water Quality (5 Copies) 401 /Wetlands Unit 1650 Mail Service Center Raleigh NC 27699 1650 Subject PCN for Crabtree Creek Greenway Trail Dear Ms Witherspoon The City of Raleigh is submitting a revised PCN for the above referenced project The Crabtree Creek trail generally follows Crabtree Creek from Milburnie Road to Anderson Point Park Several sections of trail will be located in previously disturbed sewer easement areas The construction of the trail will involve grading subgrade preparation paving drainage and erosion control The section of trail from the beginning to the first crossing of Crabtree Creek parallels the City of Raleigh Public Works Crabtree Interceptor Project Information relating to the interceptor project is shown on the plans for information only The interceptor project is a separately permitted project Please find the attached 1 Pre Construction Notification (PCN) form (5 copies) 2 5 Copies of response comments 3 4 Full size plan sets with 1/2 size cross sections 4 1 Half size plan sets with 1/2 size cross sections 5 1 CD containing pdf of plans 6 2 Binders containing the following a Full size USGS map with project located b Soil maps with project located c Revised Culvert calculations d Revised Ditch calculations Please contact me (mtaylor @stewart eng com or 919 380 8750) if you have any questions or require further detail Sinc r ly STEWART ENGINEERING, INC Michael Taylor PE Project Engineer ENGINEERING INNOVATION SOLUTIONS TM 421 FAYETTEVILLE STREET RALEIGH NC T 919 380 8750 SUITE 400 27601 F 919 380 8752 DWQ Project# 12 0202 — Crabtree Creek Greenway Trail Response to Comments — DWQ PCN Application Comments from Lauren Witherspoon 1 Please depict the greenway trail on the most recent bound and published Wake County soil survey and the USGS 124 000 topographic map for the project and submit to DWQ Please label these maps with all stream and wetland impact numbers (included on PCN application) and submit to DWQ RESPONSE A map with the above requested information has been added to this package 2 Please shade and /or hatch all buffer impacts and enumerate on the site plans and clearly label impacts (131 B32) Please submit revised plans or new plans depicting buffer impacts RESPONSE The buffer impacts are now hatched and enumerated on the plan sheets 3 Page 5 of 13 of the PCN application indicates the following a SG8 Proposes no permanent impacts However plan sheet indicates 10 LF of permanent impacts b WG4 — Column 2a indicates that the impact is temporary while column 2f indicates that it is a permanent impact c WG1 — Column 2a indicates that the impact is permanent while the impact is located in the temporary impacts column d Please revise and resubmit Page 5 of 13 of the PCN application and /or plans with accurate /consistent information RESPONSES a The error on the plan sheet has been corrected There are no permanent impacts to SG8 b Column 2a has been updated to correctly show WG4 impact as permanent c The design of the trail at location WG1 has been revised due to flood model implications Wetland WG1 now contains both permanent and temporary impacts d The revised PCN Application has been included in this submittal Please see Page 5 of 13 4 Plan Sheet 17 — Is buffer depicted correctly near Sta 180 +57 17? a If this is a stream and or surface water you will need to include the pipe and dissipater pad in the 401 submittal b A ditch is depicted through the buffer Please explain how you are providing diffuse flow and or nutrient removal at this location RESPONSES a The buffer was not shown correctly on the original submittal The buffer is now correctly shown on plan sheet 17 The unnamed tributary is approximately 70 LF and does not extend upstream far enough as to conflict with the erosion control measures or pipe and dissipator pad of the proposed trail There is no stream impact proposed in this location and therefore no changes have occurred on the 401 submittal b The proposed ditch is outside of the buffer and outlets into the upstream invert of the proposed culvert #14 Stewart Engineering Inc has permitted similar instances as this with DWQ based on maintaining natural conveyance in the locations of existing draws when these draws are crossed by the proposed trail As evidenced by the delineation for culvert #14 under the Culvert Calculations tab with the original PCN Application all flow that is being directed by the ditch and then outlets at culvert #14 in the proposed condition naturally occurs with the existing topography in the pre - construction condition Since there is not additional area flowing to this discharge point a diffuse flow device is not required for the ditch outlet at this location Please note that all efforts are made to ensure diffuse flow throughout this project Due to the limited options caused by the constraint of the buffers and NCDOT Right of Way for US 264 if there is further concern at this location please call me to discuss Sincerely Chase Cullipher P E Project Engineer Stewart Engineering Inc (919)866 4827 ccullipher @stewart eng corn y�o� W ATF,9oy r 'i O 'C la,- na.o2- Office Use Only Corps action ID no DWQ project no 100525 Form Version 14 January 2009 Pre - Construction Notification PCN Form A Appheant Information 1 Processing la Type(s) of approval sought from the Corps F[D Section 404 Permit ❑Section 10 Permit 1 b Specify Nationwide Permit (NWP) number 23 or General Permit (GP) number 1c Has the NWP or GP number been venfied by the Corpse ❑ Yes ® No 1 d 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 ® 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 ® 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 Crabtree Creek Greenway Trail 2b County Wake 2c Nearest municipality / town Raleigh 2d Subdivision name N/A 2e NCDOT only T I P or state project no N/A 3 Owner Information 3a Name(s) on Recorded Deed Multiple Please see attached 3b Deed Book and Page No Multiple Please see attached 3c Responsible Party (for LLC if applicable) Vic Lebsock City of Raleigh 3d Street address 222 West Hargett St Suite 601 3e City state zip Raleigh NC 27601 3f Telephone no 9199964786 3g Fax no 919 996 7486 3h Email address victor lebsock @ci raleigh nc us Page 1 of 13 PCN Form — Version 1 4 January 2009 4 Applicant Information (if different from owner) 4a Applicant is ® Agent ❑ Other specify 4b Name Victor Lebsock 4c Business name (if applicable) City of Raleigh Parks and Recreation Department 4d Street address 222 West Hargett St Suite 601 4e City state zip Raleigh NC 27601 4f Telephone no 919 996 -4786 4g Fax no 919 996 7486 4h Email address victor lebsock @ci raleigh nc us 5 Agent/Consultant Information (if applicable) 5a Name Iona Thomas AICP 5b Business name (if applicable) Stewart Engineering Inc 5c Street address 421 Fayetteville Ste 400 5d City state zip Raleigh NC 27601 5e Telephone no 919 866 -4762 5f Fax no 919 380 8752 5g Email address ithomas @stewart eng com B Project Information and Prior Project History 1 Property Identification 1a Property identification no (tax PIN or parcel ID) Multiple see attached 1 b Site coordinates (in decimal degrees) Latitude Longitude (35 787924) (78 590730) 1 c Property size Multiple Parcels = 669 06 AC 2 Surface Waters 2a Name of nearest body of water (stream river etc ) to proposed project Crabtree Creek 2b Water Quality Classification of nearest receiving water WS IV 2c River basin Neuse Page 2 of 13 PCN Form — Version 14 January 2009 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 Site conditions are currently floodplam with forest and some utility easements for power and sewer lines In the vicinity of the project land use is mixed between residential and commercial The City of Raleigh has acquired land and easements the length of the corridor 3b List the total estimated acreage of all existing wetlands on the property 3 373 AC (multiple parcels) 3c List the total estimated linear feet of all existing streams (intermittent and perennial) on the property 3 225 LF of Perennial Streams 0 LF of Intermittent Streams and 21 341 LF of Crabtree Creek (multiple parcels) 3d Explain the purpose of the proposed project Crabtree Creek Greenway Trail will connect the existing Buckeye Trail to the existing Anderson Point Park at the confluence of Crabtree Creek and the Neuse River By connecting to Anderson Point Park this greenway trail will add to the proposed Neuse River Trail network that is currently under construction The Neuse River Trail network is comprised of the Upper Neuse Trail which is a completed 8 mile section of trail traversing the area from Falls Dam to the soccer complex near Perry Creek Road The southern section of the Neuse River Trail network is currently under construction and will continue south following the Neuse River to the Wake /Johnston County Line where it will connect to the Johnston County Greenway system In addition to acting as a link in the Mountains to Sea Trail locally the trail will connect recreational residential and commercial nodes providing an alternative mode of transportation and increasing recreational opportunities This project is also part of the City of Raleigh s efforts to protect water quality and increase riparian buffer areas in the Neuse Watershed The project includes property and easement acquisition that places approximately 7 4 acres into greenway conservation The project increases the Crabtree Creek Buffers from 50 feet up to hundreds of feet The City of Raleigh conservation effort is important to the health of Crabtree Creek given the heavy development that parallels and drains into this section of the Neuse River watershed The length of the project is 3 37 miles 3e Describe the overall project in detail including the type of equipment to be used The project involves construction of new 10 wide asphalt paved trail boardwalk in wetland and narrow stream locations as well as bridges over tributaries and Crabtree Creek Boardwalk is used to prevent impacts to jurisdictional wetlands and avoid jurisdictional stream impacts Where stream crossings are necessary but boardwalk cannot span the top of banks short tributary bridges are used to prevent piping the channel and maintain the existing topography and flow for the surrounding habitat There are three bridges that cross Crabtree Creek and one bridge over stream S$ a tributary to Crabtree Creek The City of Raleigh is administering the project and will oversee the construction The contractor selected for the project will determine the equipment used on the project However trail contractors generally use small paving machines and earth moving equipment which has lower impacts to the project area than traditional highway construction equipment Multiple construction entrances have been identified to minimize trip distances of equipment Nationwide Permit 23 General Conditions will be included in construction documents to direct contractor operations in and around wetlands 4 Jurisdictional Determinations 4a Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / Yes El No El Unknown project (including all prior phases) in the pasty Comments 4b If the Corps made the jurisdictional determination what type ® preliminary ❑ Final of determination was made? Agency /Consultant Company 4c If yes who delineated the jurisdictional areas? Environmental Services Inc Name (if known) Gail Tyner 524 S New Hope Road Raleigh NC Other 4d If yes list the dates of the Corps jurisdictional determinations or State determinations and attach documentation The Corps reviewed a Jurisdictional Packet February 2009 and declined a field review DWQ reviewed the Neuse River Buffer Applicability March 24 2009 Page 3 of 13 PCN Form — Version 1 4 January 2009 5 Project History 5a Have permits or certifications been requested or obtained for this project (including all prior phases) in the past? ❑ Yes ® No ❑ Unknown 5b If yes explain in detail according to help file instructions 6 Future Project Plans 6a Is this a phased project? ❑ Yes ® No 6b If yes explain This project connects the existing Buckeye Trail running west to east along Crabtree Creek to the existing Anderson Point Park that is at the confluence of Crabtree Creek and the Neuse River C Proposed Impacts Inventory 1 Impacts Summary 1a Which sections were completed below for your project (check all that apply) ® Wetlands ® Streams tributaries ® Buffers ❑ Open Waters ❑ Pond Construction Page 4 of 13 PCN Form — Version 14 January 2009 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 3g Wetland impact Stream impact Type of impact Stream name Type of jurisdiction Permanent Temporary number — Type of impact Type of wetland Forested (Corps 404 10 Area of impact (acres) Impacts Permanent (P) or length (if known) Permanent (P) or DWQ —non 404 other) Temporary T width Temporary (T) Clearing for ® Yes ® Corps Install Temp WG7 ® P ❑ T Hydrology PFO El No ❑ DWQ 011 SG8 ❑ P ®T Pipe for Model ® PER ® Corps 68 0 32 LF WG6 ® P ❑ T Construction Fill PFO ® Yes ® Corps 000001 for Culvert Access ❑ No ❑ DWQ WG6 ❑ P ® T Construction Fill PFO ® Yes ® Corps 0006 for Culvert ❑ No ❑ DWQ UT to Crabtree ® PER ® Corps Temporary Fill 0 ® Yes ® Corps Construction WG4 ® P ❑ T for Construction PFO ❑ No DWQ 020 Access Access WG1 ® P ❑ T Construction Fill PFO ® Yes ® Corps 012 SG4 ❑ P ® T for Culvert UT to Crabtree ❑ No ❑ DWQ 3-4 0 WG1 ❑ P ® T Construction Fill PFO ® Yes ® Corps 0206 for Culvert SG2 ® P ❑ T ❑ No ❑ DWQ ® PER ® Corps 3 2g Total wetland impacts 043 021 2h Comments Total Impacts (permanent + temporary) = 0 064 AC 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 or Type of Average Permanent Impact Temporary Impact number intermittent? jurisdiction stream length Length Permanent (P) or width Temporary (T) Install Temp SG8 ❑ P ®T Pipe for UT to Crabtree ® PER ® Corps 68 0 32 LF Construction ❑ INT ❑ DWQ Access Install Temp SG5 ❑ P ® T Pipe for UT to Crabtree ® PER ® Corps 2 0 40 LF Construction ❑ INT ❑ DWQ Access Install Temp SG4 ❑ P ® T Construction Pipe UT to Crabtree ® PER ❑ INT ® Corps ❑ DWQ 3-4 0 36 LF Access SG2 ® P ❑ T 32LF 24 HDPE UT to Crabtree ® PER ® Corps 3 12 LF USACE 0 ❑ INT ❑ DWQ 20 LF NCDENR Install Temp SG1 ❑ P ® T UT to Crabtree ® PER ® Corps 6 0 32 LF Construction ❑ INT ❑ DWQ Access 3h Total stream and tributary impacts 12 LF USA CE 140 LF 20 LF NCDENR 31 Comments Temporary stream impacts associated with temporary access issues include installation of temporary pipe for construction equipment crossing The contractor will be instructed to follow NW14 procedures for temporary structures This NWP also authorizes temporary structures fills and work necessary to construct the linear transportation project Appropriate measures must be taken to maintain normal downstream ows and Page 5 of 13 PCN Form — Version 1 4 January 2009 minimize flooding to the maximum extent practicable when temporary structures work and discharges including cofferdams are necessary for construction activities access fills or dewatering of construction sites Temporary fills must consist of materials and be placed in a manner that will not be eroded by expected high flows Temporary fills must be removed in their entirety and the affected areas returned to pre construction elevations The areas affected by temporary fills must be revegetated as appropriate USA CE Corps representatives have also directed the City that a woven separator fabric be used beneath any and all temporary fill The purpose being to aid in the removal of temporary fill and ensure the area is returned to pre construction elevations and conditions Winning bidder is to coordinate all temporary structures with the owner/ construction administrator prior to construction Permanent stream impacts are calculated different per agency USACE does not include dissipater pads in the calculation if the pads are buned NCDENR includes the dissipater pad regardless of the installation type The dissipater pads on this project are buned resulting in the permanent impact length difference 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 Open water impact number — Permanent (P) or Temporary T 4b Name of water body (if applicable) 4c Type of impact 4d Water body type 4e Area of impact (acres) 01 ❑P ❑T 02 ❑P ❑T 03 ❑P 04 ❑P 4f Total open water impacts 4g Comments There are no Open Water impacts 5 Pond or Lake Construction If pond or lake construction proposed then complete the chart below 5a Pond ID number 5b Proposed use or purpose of pond 5c Wetland Impacts (acres) 5d Stream Impacts (feet) 5e Upland (acres) Flooded Filled Excavated Flooded Filled Excavated Flooded P1 P2 5f Total 5g Comments There are no Pond or Lake impacts 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 Page 6 of 13 PCN Form — Version 1 4 January 2009 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 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) for Stream name mitigation (square feet) (square feet) or Temporary T impact B1 ®P ❑ T Cut/Fill Crabtree Creek -required ®Nos 0 1 086 B2 ®P ❑ T Cut/Fill Crabtree Creek ®Nos 7 017 0 B3 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 0 4 921 B4 ® P ❑ T Cut/Fill Crabtree Creek ® No 21 565 13 390 B5 SPOT Cut/Fill Crabtree Creek ® Nos 15 477 30 117 B6 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 3 234 0 B7 ® P ❑ T Cut/Fill Crabtree Creek ® Yes s 729 0 B8 ® P ❑ T Cut/Fill Crabtree Creek ® No 2 505 1934 B9 ® P ❑ T Cut/Fill Crabtree Creek ® No 2 250 1 765 B10 ®P ❑ T Cut/Fill Crabtree Creek ® Yes s 20 2 431 B12 ® P ❑ T Cut/Fill Crabtree Creek ® No 0 96 B13 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 153 2 266 B14 ® P ❑ T Cut/Fill Unnamed Tributary to ® 3 529 3 912 Crabtree Creek No B15 ®P ❑ T Cut/Fill Unnamed Tributary to El Yes 2026 1 422 Crabtree Creek B16 ® P ❑ T Cut/Fill Unnamed Tributary to Nos 2 486 1 937 Crabtree Creek ® B17 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 1901 1 644 B18 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 2 743 1 690 1319 ® P ❑ T Cut/Fill Crabtree Creek ® No 0 2 308 B20 ® P ❑ T Cut/Fill Crabtree Creek ® No 0 34 386 B21 ® P ❑ T Cut/Fill Crabtree Creek ® No 4 171 0 B22 ® P ❑ T Cut/Fill Crabtree Creek ® Yes s 2 600 0 Page 7 of 13 PCN Form — Version 1 4 January 2009 B23 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 2 284 0 B24 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 0 85 B25 ® P ❑ T Cut/Fill Unnamed Tributary to Crabtree Creek ® Nos 3103 952 B26 ® P ❑ T Cut/Fill Crabtree Creek ® No 0 866 B27 ® P ❑ T Cut/Fill Crabtree Creek ®Nos 0 359 B28 ® P ❑ T Cut/Fill Crabtree Creek ® No 0 663 B29 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 3 821 10 120 B30 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 3 552 1 842 B31 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 2 887 1 867 B32 ® P ❑ T Cut/Fill Crabtree Creek ® Nos 0 882 6h Total buffer impacts 88 053 122 941 61 Comments Greenway trails are an allowable use within buffer zones The trail is specifically designed to provide sheet flow throughout the entire length of the project to meet DWQ Diffuse Flow Buffer Rules Culverts are designed to only allow flow for which is naturally conveyed through existing draws in the land There is no post construction increase inflow at the discharge of culverts due to the sheet flow conditions of the proposed trail D Impact Justification and Mitigation 1 Avoidance and Minimization la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project Corridor Realignment The horizontal alignment has been adjusted to avoid or minimize impacts to wetlands streams and buffers as much as possible Where these resources can be avoid they have been Stream Crossing Location — At each stream crossing a detail analysis was performed to identify the best crossing spot This includes crossing at the most narrow point crossing perpendicular to the stream and crossing away from parallel streams Boardwalk over Wetlands — The City of Raleigh has a policy of using boardwalk to cross all jurisdictional wetlands throughout their greenway network While this is a costly policy from both a construction and maintenance perspective the City is committed to preserving wetland function Wetland WG1 has been crossed with boardwalk to avoid placement of fill in the wetlands Bridges /Boardwalk Rather than Pipe — Bridges are used throughout the project in locations where pipe sizes or drainage areas are too large While double or triple barrel culverts could work in these locations the City has chosen to use bridges to reduce stream impacts Streams SG1 SG4 SG5 and SG8 have all been spanned using boardwalk or bridge in order to avoid filling and piping of the tributaries to Crabtree Creek Minimizing Grading The trail itself matches existing grade to minimize the amount of fill and reducing the overall footprint of the project and thus the impacts to jurisdictional waters Minimize Clearing — A large percentage of the trail will be located within a cleared sewer easement The location of the trail within this cleared and maintained easement reduces the need for additional clearing in sensitive riparian areas Page 8 of 13 PCN Form — Version 1 4 January 2009 Erosion Control Silt Fence has been applied along fill slopes and upstream of all wetlands and streams Combination Tree Protection and Silt Fence is utilized to demarcate all Buffer Zones to maximize protection and environmental awareness of the contractor during construction lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques The contractor shall be responsible for minimizing the impacts through construction techniques However the bid specification will call for hand clearing where possible use of construction mats in sensitive areas small paving machines and generally low impact machines to be used on the project in sensitive areas Multiple construction entrances have been provided to minimize trip distances of heavy equipment Nationwide 23 General Conditions will be included in construction specifications 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) ❑ DWQ ❑ Corps 2c If yes which mitigation option will be used for this project? ❑ Mitigation bank ❑ ro Payment to in lieu fee ram y p g ❑ Permittee Responsible Mitigation 3 Complete if Using a Mitigation Bank 3a Name of Mitigation Bank 3b Credits Purchased (attach receipt and letter) Type Quantity 3c Comments 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) 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 Pace 9 of 13 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 buffer mitigation? ❑ Yes ® No 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 Zone 6c Reason for impact 6d Total impact (square feet) Multiplier 6e Required mitigation (square feet) Zone 1 where there are existing natural draws The flow is not increased at these discharge ❑ Yes ® No 3 (2 for Catawba) Zone 2 trail and be of an adequately diffuse flow 15 6f Total buffer mitigation required 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) 6h Comments 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 El No within one of the NC Riparian Buffer Protection Rules? 1 b If yes then is a diffuse flow plan included? If no explain why Comments The runoff directed into the Riparian Buffers occurs at culverts where there are existing natural draws The flow is not increased at these discharge ❑ Yes ® No points All outlets of these culverts have been provided with NCDOT standard sized rip rap velocity dissipater pads All other runoff shall sheet flow across the trail and be of an adequately diffuse flow Page 10 of 13 PCN Form — Version 1 4 January 2009 2 Stormwater Management Plan 2a What is the overall percent imperviousness of this project? 0 711 % 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 ❑ 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? City of Raleigh ❑ Phase II 3b Which of the following locally implemented stormwater management programs ❑ NSW ❑ USMP apply (check all that apply) ❑ Water Supply Watershed ❑ Other 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 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 Page 11 of 13 PCN Form — Version 1 4 January 2009 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? lb 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)? 1 c 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 Programmatic Categorical Exclusion approved by NCDOT FHWA 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 213 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 12 of 13 PCN Form — Version 1 4 January 2009 5 Endangered Species and Designated Critical Habitat (Corps Requirement) 5a Will this project occur in or near an area with federally protected species or ® 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? ESI Inc reviewed the NHP database and conducted habitat evaluations See attached USFW letter 6 Essential Fish Habitat (Corps Requirement) 6a Will this project 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' NCDOT Website — Index By County of Water Bodies 7 Historic or Prehistoric Cultural Resources (Corps Requirement) 7a Will this project occur in or near an area that the state federal or tribal governments have designated as having historic or cultural preservation ❑ 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? ESI Inc coordinated with SHPO and the site was approved 8 Flood Zone Designation (Corps Requirement) 8a Will this project occur in a FEMA- designated 100 year floodplain? ® Yes ❑ No 8b If yes explain how project meets FEMA requirements For trails no fill will be placed within the floodway or floodplain The project has been coordinated with the Local Floodplain Administrators and NC Floodplain Mapping For bridges that cross Crabtree Creek and its tributaries within detailed study areas CLOMRs or No Rise Certifications have been submitted reviewed comments incorporated and approval is expected soon 8c What source(s) did you use to make the floodplain determination? NC Floodmaps Victor Lebsock 05/03/2012 Applicant/Agents Printed Name Date Applicant/Agent sSignature (Agents signature is valid only if an authorization letter from the applicant is provided Page 13 of 13 PCN Form — Version 1 4 January 2009 DWQ Project# 12 0202 — Crabtree Creek Greenway Trail Response to Comments — DWQ PCN Application Comments from Lauren Witherspoon 1 Please depict the greenway trail on the most recent bound and published Wake County sod survey and the USGS 124 000 topographic map for the project and submit to DWQ Please label these maps with all stream and wetland impact numbers (included on PCN application) and submit to DWQ RESPONSE A map with the above requested information has been added to this package 2 Please shade and /or hatch all buffer impacts and enumerate on the site plans and clearly label impacts (131 B31) Please submit revised plans or new plans depicting buffer impacts RESPONSE The buffer impacts are now hatched and enumerated on the plan sheets 3 Page 5 of 13 of the PCN application indicates the following a SG8 Proposes no permanent impacts However plan sheet indicates 10 LF of permanent impacts b WG4 — Column 2a indicates that the impact is temporary while column 2f indicates that it is a permanent impact c WG1 — Column 2a indicates that the impact is permanent while the impact is located in the temporary impacts column d Please revise and resubmit Page 5 of 13 of the PCN application and /or plans with accurate /consistent information RESPONSES a The error on the plan sheet has been corrected There are no permanent impacts to SG8 b Column 2a has been updated to correctly show WG4 impact as permanent c The design of the trail at location WG1 has been revised due to flood model implications Wetland WG1 now contains both permanent and temporary impacts d The revised PCN Application has been included in this submittal Please see Page 5 of 13 4 Plan Sheet 17 — Is buffer depicted correctly near Sta 180 +57 17? a If this is a stream and or surface water you will need to include the pipe and dissipater pad in the 401 submittal b A ditch is depicted through the buffer Please explain how you are providing diffuse flow and or nutrient removal at this location RESPONSES a The buffer was not shown correctly on the original submittal The buffer is now correctly shown on plan sheet 17 The unnamed tributary is approximately 70 LF and does not extend upstream far enough as to conflict with the erosion control measures or pipe and dissipator pad of the proposed trail There is no stream impact proposed in this location and therefore no changes have occurred on the 401 submittal b The proposed ditch is outside of the buffer and outlets into the upstream invert of the proposed culvert #14 Stewart Engineering Inc has permitted similar instances as this with DWQ based on maintaining natural conveyance in the locations of existing draws when these draws are crossed by the proposed trail As evidenced by the delineation for culvert #14 under the Culvert Calculations tab with the original PCN Application all flow that is being directed by the ditch and then outlets at culvert #14 in the proposed condition naturally occurs with the existing topography in the pre construction condition Since there is not additional area flowing to this discharge point a diffuse flow device is not required for the ditch outlet at this location Please note that all efforts are made to ensure diffuse flow throughout this project Due to the limited options caused by the constraint of the buffers and NCDOT Right of Way for US 264 if there is further concern at this location please call me to discuss Sincerely Chase Cullipher P E Project Engineer Stewart Engineering Inc (919)866 4827 ccullipher @stewart eng corn ,I, -7c)2oZ Pre- Construction Notification For the proposed Crabtree Creek Greenway Trail Buckeye Greenway Trail to Anderson Point Park Raleigh, North Carolina Prepared for City of Raleigh, NC Prepared By C(:$), STEWART May 25, 2012 )aa j 0005 Ob85I = i aleOS 0 000 ? 000 Z 000 £ 000 b 0009 w al!W I s 0 -- -- (OS jaays suior) vo0 a x (207 f� m 3 a, N �� ► J;at Q N p M •C O � G 4i 0 J J .\ INV fA s q IL i r u .l .. �1, o. }b,, .��' A�': - Rte' "t� ��,•��" , *."T y, � ", Or h m d l C O d I ` • - rRA • .�► .�' . • :rte„- �r 7:T !s ' r _ • -4.` '\ ,( , ' =. \' c Wes,. �s • _ 'r . 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I AN aqw- NJ r l t t ` `�•� � �M, - '/ l S� � � i�� , '�' wb wit �{{ +w. r .•r m N U CI LL Hydro Computation (Hydraulic Analysis) By: JH Date: 10/6/2008 S 8.96 9.72 10 min. 4.76 5.54 6.13 7.01 7.71 8.40 Checked: DB Date: 10/6/2008 STEWART 6.64 7.24 30 min. 2.70 3.28 3.71 Project: Lower Neuse Greenway 4.80 5.28 60 min. 1.70 Job Number: H9001.00 2.41 2.84 3.17 3.50 120 min. 0.95 Description: Hydraulic Design Criteria 1.37 1.62 1.81 2.00 Intensit - Duration -Fre uenc Table 0.71 Ralei h- Durham, NC 1.02 1.21 1.35 1.50 360 min. Return Period 0.56 0.65 0.77 2 yr. 5 yr. 10 yr. 25 yr. 50 yr. 100 yr. 0.46 in /hr in /hr in /hr (in/hr) in /hr (in/hr 0.27 0.30 0.33 5 min 5.76 6.58 7.22 8.19 8.96 9.72 TT min 6.76 7.62 '8.31 9.37 10.21 11.04 10 min 4.76 5.54 6.13 7.01 7.71 8.40 TT min 6.20 7.14 7.89 8.97 9.85 10.72 15 min 4.04 4.74 5.25 6.03 6.64 7.24 TT min 5.38 6.20 6.79 7.74 8.48 9.20 30 min 2.70 3.28 3.71 4.32 4.80 5.28 TT min 3.70 4.44 5.01 5.80 6.43 7.06 60 min 1.70 2.12 2.41 2.84 3.17 3.50 TT min 2.45 3.04 3.45 4.06 4.53 5.00 120 min 0.95 1.20 1.37 1.62 1.81 2.00 TT min 1.43 1.82 2.07 2.44 2.73 3.00 180 min 0.71 0.89 1.02 1.21 1.35 1.50 TT min 0.98 1.22 1.39 1.65 1.84 2.04 360 min 0.44 0.56 0.65 0.77 0.86 0.96 TT min 0.62 0.79 0.91 1.08 1.20 1.35 720 min 0.26 0.33 0.39 0.46 0.52 0.57 TT min 0.37 0.47 0.56 0.65 0.74 0.81 1440 min 0.15 0.19 0.22 0.27 0.30 0.33 Duration 5 min. 5.76 6.58 7.22 8.19 8.96 9.72 10 min. 4.76 5.54 6.13 7.01 7.71 8.40 15 min. 4.04 4.74 5.25 6.03 6.64 7.24 30 min. 2.70 3.28 3.71 4.32 4.80 5.28 60 min. 1.70 2.12 2.41 2.84 3.17 3.50 120 min. 0.95 1.20 1.37 1.62 1.81 2.00 180 min. 0.71 0.89 1.02 1.21 1.35 1.50 360 min. 0.44 0.56 0.65 0.77 0.86 0.96 720 min. 0.26 0.33 0.39 0.46 0.52 0.57 1440 min. 0.15 0.19 0.22 0.27 0.30 0.33 PROPOSED 0� C E WAY T L — ti CUL ERT l loo \ oog ►o s \ \ s \ pJ00 o y Tc PATH a 1 DEL/NEAT IONS ° J .°° �J 0 �' i Culvert Computation a (Hydraulic Analysis) CS By CC Date 2/21/2012 Checked BC Date 2/21/2012 STEWART Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 1 Location Y2 30 +00 Acres Sub Area Area (acres) Imervious Area Pervious Area Cw CA Acres C Acres C 1 1 661 0 028 0 900 1 633 0 500 0 507 0 842 Totals 1 661 267 N 0 842 ime of Concentration Calculation is less than 5 min Use Rational Method with 5 min Intensit)(s Q10 =CIA= 608 cfs Q25 =CIA= 689 cfs Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min ) Sub Area 1 Sheet Flow 75 236 188 06400 024 267 Shallow Conc Flow 148 188 175 0 0878 Unpaved 052 Open Channel Flow 1 100 1 180 1 175 1 00500 1 008 086 Time of Concentration = 404 ime of Concentration Calculation is less than 5 min Use Rational Method with 5 min Intensit)(s Q10 =CIA= 608 cfs Q25 =CIA= 689 cfs Culvert Designer /Analyzer Report 01 - Culvert 1 - Sta 30 +00 -Y2 Analysis Component Storm Event Design Discharge 6 08 cfs Peak Discharge Method User Specified Design Discharge 6 08 cfs Check Discharge 6 89 cfs Tailwater Conditions Constant Tailwater Tailwater Elevation 176 50 ft Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 6 08 cfs 177 77 ft 5 14 ft/s Weir Roadway (Constant Elevatior%00 cfs 177 77 ft N/A Total — — 6 08 cfs 177 77 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird I \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 39 58 Willentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 01 - Culvert 1 - Sta 30 +00 Y2 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 177 77 ft 17767 ft 17777 ft 104 Discharge Tailwater Elevation Control Type 6 08 cfs 176 50 ft Outlet Control Grades Upstream Invert Length 176 20 ft 3200 ft Downstream Invert Constructed Slope 176 00 ft 0006250 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcrdical 514 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 095 ft 095 ft 095 ft 0006264 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Mannings Coefficient Span Rise 0 013 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 177 77 ft 050 Upstream Velocity Head Entrance Loss 041 ft 020 ft Inlet Control Properties Inlet Control HW Elev 17767 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \cuiverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 39 58 QPBentiey Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 01 - Culvert 1 Sta 30 +00 Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 177 77 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 179 52 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 17952 10000 17952 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engmeenng CuivertMaster v3 2 [03 02 00 01] 02/22/12 08 39 58 AMentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 Culvert Designer /Analyzer Report 01 - Culvert 1 Sta 30 +00 Y2 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 02/22/12 08 40 08 OlGentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 13 49 cfs 179 52 ft 7 98 ft/s Weir Roadway (Constant Elevatioi%00 cfs 179 52 ft N/A Total — — 13 49 cfs 179 52 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 02/22/12 08 40 08 OlGentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 01 - Culvert 1 Sta 30 +00 Y2- Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 179 52 It 17952 ft 17933 ft 221 Discharge Tailwater Elevation Control Type 13 49 cfs 176 50 ft Inlet Control Grades Upstream Invert Length 176 20 ft 3200 ft Downstream Invert Constructed Slope 176 00 ft 0006250 ft/ft Hydraulic Profile Profile CompositeM2PressureProfile Slope Type Mild Flow Regime Subcntical Velocity Downstream 798 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 1 37 ft N/A ft 1 37 ft 0014394 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Mannings Coefficient Span Rise 0 013 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 179 33 ft 050 Upstream Velocity Head Entrance Loss 0 91 ft 045 ft Inlet Control Properties Inlet Control HW Elev 17952 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 40 08 AMentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 01 - Culvert 1 - Sta 30 +00 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 179 52 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 179 52 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17952 10000 17952 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 40 08 @N Sentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 l/ � N Q � Z j CIZ L4J J 0 v �1 lop \ 1 ` 1 Oc // / CL i // Q W uj 4 Q ,9,(::) �J \ J t F r Iz \ T i i PJ� 1� \ \ \\ "<— , Culvert Computation (Hydraulic Analysis) u By CC Date 2/21/2012 STEWART Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 2 Location Y2 35 +80 Dramage Area a Time of Concentration Sub Area Area (acres) Imeious Area Pervious Area Cw CA Sub Area 1 Acres C Acres C 417 1 1 676 0 012 0 900 1 664 1 0 500 0 503 0 843 Shallow Conc Flow 235 Totals 1 676 0 0809 0 843 085 Time of Concentration Discharge A= 1 676 acres C = 0 5029 T = 20 878704 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 100 Intense I in /hr 351 417 465 Sheet Flow 300 218 200 00600 024 2088 Shallow Conc Flow 235 200 181 0 0809 Unpaved 085 Open Channel Flow 125 181 179 00160 008 158 Time of Concentration = 2331 Discharge A= 1 676 acres C = 0 5029 T = 20 878704 min Recurrence Interval Years 2 5 10 25 50 100 Intense I in /hr 351 417 465 536 592- 647 Discharge Q (cfs) 296 351 392 452 499 545 Culvert Designer /Analyzer Report 02 - Culvert 2 Sta 35 +80 Y2- Analysis Component Storm Event Design Discharge 3 92 cfs Peak Discharge Method User Specified Design Discharge 3 92 cfs Check Discharge 4 52 cfs Tailwater Conditions Constant Tailwater Tailwater Elevation 178 50 ft Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 3 92 cfs 179 40 ft 4 38 ft/s Weir Roadway (Constant Elevatior4OO cfs 179 40 ft N/A Total 3 92 cfs 179 40 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird I \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 02/22/12 08 40 20 416entley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 02 - Culvert 2 - Sta 35 +80 -Y2 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 179 40 ft 17930 ft 17940 ft 080 Discharge Tadwater Elevation Control Type 3 92 cfs 178 50 ft Outlet Control Grades Upstream Invert Length 178 20 ft 4000 ft Downstream Invert Constructed Slope 178 00 ft 0005000 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcntical 438 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 0 76 ft 0 77 ft 076 ft 0005388 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Manrnngs Coefficient Span Rise 0 013 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 179 40 ft 050 Upstream Velocity Head Entrance Loss 028 ft 014 ft Inlet Control Properties Inlet Control HW Elev 17930 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 40 20 QISentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 02 Culvert 2 - Sta 35 +80 Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 179 40 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 180 99 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 18099 10000 18099 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 40 20 QMentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 Culvert Designer /Analyzer Report 02 - Culvert 2 - Sta 35 +80 -Y2- Title Upper Neuse GreenWay Project Engineer Drew Baird I \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 40 28 QNBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 11 85 cfs 180 99 ft 7 25 ft/s Weir Roadway (Constant Elevatioij OO cfs 180 99 ft N/A Total 1185 cfs 180 99 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird I \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 40 28 QNBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 02 Culvert 2 Sta 35 +80 Y2 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 180 99 ft 18099 ft 18097 ft 186 Discharge Tadwater Elevation Control Type 11 85 cfs 178 50 ft Inlet Control Grades Upstream Invert Length 178 20 ft 4000 ft Downstream Invert Constructed Slope 178 00 ft 0005000 ft/ft Hydraulic Profile Profile CompositeM213ressureProfile Slope Type Mild Flow Regime Subcntical Velocity Downstream 725 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 1 31 ft N/A ft 1 31 ft 0011571 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Mammngs Coefficient Span Rise 0 013 1 50 ft 1 50 It Outlet Control Properties Outlet Control HW Elev Ke 180 97 ft 050 Upstream Velocity Head Entrance Loss 070 ft 035 ft Inlet Control Properties Inlet Control HW Elev 18099 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 40 28 OfSentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 02 Culvert 2 - Sta 35 +80 Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 180 99 ft Roadway Width 1800 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 180 99 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 18099 10000 18099 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engmeenng CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 40 28 QWentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 i i 1 � I i 20.646 AC l DELINEATION Tc PATH / 40 \ i if ' Jr i I PROPOS�D GREENWAY, ' TRAIL \� 11 RT 3 ti \ v Culvert Computation 4 (Hydraulic Analysis) Elev 1 { Cw ffc STEwART Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 3 Location Y2 67 +35 By Checked CC BC Date Date 2/21/2012 2/21/2012 Drainage Area 20 646 0 092 0 900 20 554 0 502 10 360 Totals 20 646 1093 10 360 833 208 179 Sub Area Area Imervious Area Pervious 236 179 174 00212 008 231 L500 Time of Concentration = 1786 Time of Concentration ., Discharge A = 20 646 acres C = 0 5018 T = 10 93462 min (acres) Elev 1 Elev 2 Cw CA Acres C Acres 1 20 646 0 092 0 900 20 554 0 502 10 360 Totals 20 646 1093 10 360 Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min ) Sub Area 1 Intensity I m /hr 463 5 39 5 97 683 7 51 Sheet Flow 175 226 208 01029 024 1093 Shallow Conc Flow 833 208 179 0 0348 Unpaved 461 Open Channel Flow 236 179 174 00212 008 231 Time of Concentration = 1786 Recurrence Interval Years 2 5 10 25 50 100 Intensity I m /hr 463 5 39 5 97 683 7 51 818 Discharge Q (cfs) 47 92 55 84 6180 7072 7780 8478 Culvert Designer /Analyzer Report 03 - Culvert 3 - Sta 67 +36 -Y2 Analysis Component Storm Event Design Discharge 61 80 cis Peak Discharge Method User Specified Design Discharge 61 80 cis Check Discharge 70 72 cis Tadwater Conditions Constant Taitwater Tadwater Elevation 176 20 ft Name Description Discharge HW Elev Velocity Culvert 1 2 36 inch Circular 61 81 cis 177 83 ft 7 88 ft/s Weir Roadway (Constant Elevatior%00 cis 177 83 It N/A Total - - ---- 61 81 cis 177 83 It N/A Title Upper Neuse GreenWay Probed Engineer Drew Baird t IL \culverts\2012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05123/12 11 44 53 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 03 - Culvert 3 Sta 67 +36 -Y2- Component Culvert 1 Culvert Summary Computed Headwater Elevt Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 177 83 It 17763 It 17783 It 098 Discharge 61 81 cis Tailwater Elevation 176 20 ft Control Type Entrance Control Grades Upstream Invert Length 174 90 It 3200 It Downstream Invert Constructed Slope 174 70 ft 0008250 ft/ft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 788 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 163 ft 157 It 180 ft 0004038 ft/ft Section Section Shape Circular SecMm wLt#1adhHDPE (Smooth Interior) Section Size 36 inch Number Sections 2 Mannmgs Coefficient Span Rise 0 012 300 It 300 ft Outlet Control Properties Outlet Control HW Elev Ke 17783 It 050 Upstream Velocity Head Entrance Loss 075 It 038 It Inlet Control Properties Inlet Control HW Elev 17763 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 141 It 1 1 1 Title Upper Neuse GreenWay Protect Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 11 44 53 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 03 - Culvert 3 - Sta 67 +36 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 177 83 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 178 85 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 17885 10000 17885 Title Upper Neuse GreenWay Project Engineer Drew Baird t l lculverts=12 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1144 53 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 03 - Culvert 3 Sta 67 +35 -Y2 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 2 36 inch Circular 97 48 cis 178 85 ft 8 95 ft/s Weir Roadway (Constant Elevatioi%00 cis 178 85 It N/A Total - - -- 97 49 cis 178 85 It N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t l %culverts12012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05123/12 1145 13 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 03 - Culvert 3 - Sta 67 +36 -Y2- Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 178 85 ft 17879 ft 17885 ft 132 Discharge 97 48 cis Tadwater Elevation 176 20 It Control Type Entrance Control Grades Upstream Invert Length 174 90 ft 3200 ft Downstream Invert Constructed Slope 174 70 ft 0006250 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 895 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 216 ft 213 ft 227 ft 0005344 ft/ft Section Section Shape Circular SecGwrNW6%xhHDPE (Smooth Interior) Section Size 36 inch Number Sections 2 Mammngs Coefficient Span Rise 0 012 300 ft 300 ft Outlet Control Properties Outlet Control HW Elev Ke 17885 ft 050 Upstream Velocity Head Entrance Loss 1 12 It 066 ft Inlet Control Properties Inlet Control HW Elev 17879 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Transition 141 It 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l lculverts12012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 (03 02 00 01) 05/23/12 1145 13 AM9 Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 03 - Culvert 3 - Sta 67 +35 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 178 85 ft Roadway Width 1800 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 178 85 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17885 10000 17885 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cC culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01J 05123/12 1145 13 AID Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1203-755-1666 Page 3 of 3 Culvert Computation , (Hydraulic Analysis) , ° ' , , I t ', , CS By CC Date 2/21/2012 sTEwART Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 4 Location Y2 79 +20 Drainage Area Sub Area Area (acres) Imervious Area Pervious Area Cw CA Acres C Acres C 1 9 980 0 023 0 900 9 957 1 0 500 0 501 4 999 Totals 9 980 2189 4 999 uiscnar a 11 A = 9 980 acres C = 0 5009 T = 28 483376 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 Intense I in /hr 284 1 3 43L 3 87 4 49 4 99 J Sheet Flow 300 237 221 00533 024 2189 Shallow Conc Flow 1187 221 180 0 0345 Unpaved 660 Open Channel Flow 70 180 177 00429 008 069 Time of Concentration = 2848 uiscnar a 11 A = 9 980 acres C = 0 5009 T = 28 483376 min Recurrence Interval Years 2 5 1 10 25 1 50 100 Intense I in /hr 284 1 3 43L 3 87 4 49 4 99 J 548 Discharge Q (cfs) 1418 1 17 14 1 19 33 1 22 46 1 2493 1 2739 Culvert Designer /Analyzer Report 04 - Culvert 4 - Sta 79 +20 Y2 Analysis Component Storm Event Design Discharge 19 33 cfs Peak Discharge Method User Specified Design Discharge 19 33 dfs Check Discharge 22 46 cfs Tadwater Conditions Constant Taitwater Tadwater Elevation 179 00 It Name Description Discharge HW Elev Velocity Culvert 1 2 24 inch Circular 19 35 cfs 179 30 It 3 08 ft/s Weir Roadway (Constant ElevahoigOO cfs 179 30 It N/A Total -- --- - -- 19 35 cfs 179 30 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t V \culvertM2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1147 00 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 04 - Culvert 4 - Sta 79 +20 -Y2- Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 179 30 ft 17900 ft 17930 ft 105 Discharge Tailwater Elevation Control Type 19 35 cfs 179 00 ft Outlet Control Grades Upstream Invert Length 177 20 ft 4400 ft Downstream Invert Constructed Slope 177 00 ft 0004545 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M1 Mild Subcntical 308 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 200 It 1 16 It 1 11 ft 0005145 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 24 inch 2 Mannmgs Coefficient Span Rise 0 013 200 It 200 It Outlet Control Properties Outlet Control HW Elev Ke 17930 It 050 Upstream Velocity Head Entrance Loss 016 ft 008 It Inlet Control Properties Inlet Control HW Elev 17900 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 63 It 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t X. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1147 00 AND Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 04 - Culvert 4 - Sta 79 +20 Y2 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 179 30 It Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 180 21 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 18021 10000 18021 Title Upper Nauss GreenWay Project Engineer Drew Baird t l 1culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01) 05✓23112 1147 00 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 04 - Culvert 4 - Sta 79 +20 -Y2 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 1147 16 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 2 24 inch Circular 38 76 cis 180 21 ft 617 ft/s Weir Roadway (Constant Elevatior%00 cis 180 21 ft N/A Total --- ---- -- 38 76 cis 180 21 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 1147 16 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 04 - Culvert 4 - Sta 79 +20 Y2- Component Culvert 1 Culvert Summary Computed Headwater Elev 180 21 ft Discharge 38 76 cfs Inlet Control HW Elev 18005 ft Tailwater Elevation 179 00 ft Outlet Control HW Elev 18021 ft Control Type Outlet Control Headwater Depth/Height 151 j it Grades I Upstream Invert 17720 ft Downstream Invert 177 00 ft Length 4400 It Constructed Slope 0004545 fttft Hydraulic Profile Profile PressureProfile Depth Downstream 200 It Slope Type N/A Normal Depth N/A ft Flow Regime WA Critical Depth 1 58 ft Velocity Downstream 617 ft/s Critical Slope 0007847 ft/ft Section Section Shape Circular Mannings Coefficient 0 013 Section Material Concrete Span 200 ft Section Size 24 inch Rise 200 It Number Sections 2 Outlet Control Properties Outlet Control HW Elev 180 21 ft Upstream Velocity Head 059 ft Ke 050 Entrance Loss 030 ft Inlet Control Properties Inlet Control HW Elev 18005 It Flow Control Submerged Inlet Type Square edge w/headwall Area Full 63 ft K 000980 HDS 5 Chart 1 M 200000 HDS 5 Scale 1 C 003980 Equation Form 1 Y 067000 Title Upper Neuse GreenWay Project Engineer Drew Baird t V \culverts\2012 02 22 cc culverts Cvrri Stewart Engineering CulvertMaster v3 2 (03 02 00 011 05123/12 11 47 16 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 04 - Culvert 4 Sta 79 +20 -Y2 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 180 21 ft Roadway Width 1800 ft Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 180 21 It Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 18021 10000 18021 Title Upper Neuse GreenWay Protect Engineer Drew Baird t l \cuiverts\2012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05/23/12 1147 16 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Tc PATH INEAT/ON T 'AT H �` 16.567 AC ` ; _ CULVERT 9.980 AC Ar � • ` / /// - - -- �f �// 77 V WERT _ PROPOSED GREENWAYJ TRAIL l Culvert Computation (Hydraulic Analysis), " , } ' H ri"� �, � S STEWART Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 5 Location Y2 89 +30 By Checked CC BC Date Date 2/21/2012 2/21/2012 Drainage Area 416 482 x 585 Discharge Q (cfs) 25 66 30 76 3453 4000 44 30 4858 Sub Area Area (acres) Imervious Area Pervious Area Cw CA Acres C Acres C 1 16 567 0 053 0 900 16 514 0 500 0 501 8 305 Totals 16 567 8 305 Time of Concentration s Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min ) Sub Area 1 Sheet Flow Shallow Conc Flow Open Channel Flow 300 955 330 237 219 178 219 178 172 00600 0 0429 00182 024 Unpaved 008 2088 4 76 317 Time of Concentration = 2564 Discharge A = 16 567 acres C = 0 5013 T = 25 639794 min Recurrence Interval Years 2 5 10 25 50 100 Intensity I in /hr 309 370 416 482 5 33 585 Discharge Q (cfs) 25 66 30 76 3453 4000 44 30 4858 Recurrence Interval Years 2 5 10 25 50 100 Intensity I in /hr 309 370 416 482 5 33 585 Discharge Q (cfs) 25 66 30 76 3453 4000 44 30 4858 Culvert Designer /Analyzer Report 05 Culvert 5 - Sta 89 +30 Y2 Analysis Component Storm Event Design Discharge 34 53 cfs Peak Discharge Method User Specified Design Discharge 34 53 cfs Check Discharge 40 00 cfs TailwaterCondibons Constant Tailwater Tadwater Elevation 173 00 ft Name Description Discharge HW Elev Velocity Culvert 1 1-42 inch Circular 34 54 cfs 175 71 ft 10 65 ft/s Weir Roadway (Constant Elevatior%00 cfs 175 71 ft N/A Total -- — — 34 54 cfs 175 71 ft N/A Title Upper Neuse GreenWay Protect Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 02/22/12 10 59 39 ANBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 05 - Culvert 5 - Sta 89 +30 Y2 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 175 71 ft 17544 ft 17571 ft 083 Discharge 34 54 cis Tadwater Elevation 173 00 ft Control Type Entrance Control Grades Upstream Invert Length 172 80 ft 4800 ft Downstream Invert Constructed Slope 171 80 ft 0020833 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1065 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 1 30 ft 1 16 ft 182 ft 0004119 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 42 inch 1 Mannings Coefficient Span Rise 0 013 3 50 ft 3 50 ft Outlet Control Properties Outlet Control HW Elev Ke 175 71 ft 050 Upstream Velocity Head Entrance Loss 072 ft 036 ft Inlet Control Properties Inlet Control HW Elev 17544 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 96 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 10 59 3911Mentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 05 Culvert 5 Sta 89 +30 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 175 71 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 182 21 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 18221 10000 18221 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 10 59 39 it Mentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 Culvert Designer /Analyzer Report 05 Culvert 5 - Sta 89 +30 -Y2- Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1-42 inch Circular 128 52 cfs 182 21 ft 15 22 fUs Weir Roadway (Constant Elevatio400 cfs 182 21 ft N/A Total – — -- 128 52 cfs 182 21 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01j 02/22/12 10 59 47 AlBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 05 Culvert 5 - Sta 89 +30 Y2 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 182 21 ft 18221 ft 18045 ft 269 Discharge Tadwater Elevation Control Type 128 52 cfs 173 00 ft Inlet Control Grades Upstream Invert Length 172 80 ft 4800 ft Downstream Invert Constructed Slope 17180 ft 0020833 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1522 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 287 ft 2 56 ft 330 ft 0014108 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 42 inch 1 Mammngs Coefficient Span Rise 0 013 350 ft 350 ft Outlet Control Properties Outlet Control HW Elev Ke 180 45 ft 050 Upstream Velocity Head Entrance Loss 290 ft 1 45 ft Inlet Control Properties Inlet Control HW Elev 18221 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 96 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 10 59 47 016entley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 05 - Culvert 5 - Sta 89 +30 Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 182 21 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 182 21 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 18221 10000 18221 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 10 59 47 WSentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 e V� �b \� f FLL o� loo a Culvert Com utatlon"* -' -, (Hydraulic Analysis) x Area acres Imervious Area CS: By CC Date 2/21/2012 C Checked BC Date 2/21/2012 STEWART 0 016 0 900 0 156 Project Lower Neuse Greenway 0 092 Totals Job Number H9001 00 0 092 Description Crabtree Creek Culvert 6 Location Y2 96 +90 Drainage'Area 4'111 ,v --I Vr,'1� 41. �, ,W tif, �� Al Sub Area Area acres Imervious Area Pervious Area Cw CA Acres C Acres C 1 0 172 0 016 0 900 0 156 0 500 0 537 0 092 Totals 0172 0 092 Discharge I Rational Methods r s ass v < ct " ' Tea 4ek °et" Q10 =CIA= 067 cfs Q25 =CIA= 076 cfs Culvert Designer /Analyzer Report 06 - Culvert6 - Sta 96 +90 -Y2- Analysis Component Storm Event Design Discharge 0 67 cfs Title Upper Neuse GreenWay Project Engineer Drew Baird It l lculverts52012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 1147 50 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Peak Discharge Method User Specified Design Discharge 0 67 cis Check Discharge 0 76 cis Tailwater Conditions Constant Tailwater Tailwater Elevation 178 50 ft Name Description Discharge Culvert 1 1 18 inch Circular 0 67 cis Weir Roadway (Constant Elevatior%00 cis Total — -- -- 0 67 cis HW Elev Velocity 181 16 ft 130 ft/s 181 16 ft N/A 181 16 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird It l lculverts52012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 1147 50 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 06 - Culvert6 - Sta 96 +90 Y2 Component Culvert 1 Culvert Summary Computed Headwater Elevt Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 181 16 it 18108 It 181 16 It 031 Discharge 0 67 cis Tailwater Elevation 178 50 It Control Type Entrance Control Grades Upstream Invert Length 180 70 it 4000 it Downstream Invert Constructed Slope 178 00 ft 0067500 ft/ft Hydraulic Profile Profile CompositeSlS2 Slope Type Steep Flow Regime N/A Velocity Downstream 130 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 050 It 016 it 030 It 0005046 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Mammngs Coefficient Span Rise 0 013 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 181 16 it 050 Upstream Velocity Head Entrance Loss Oil ft 005 ft Inlet Control Properties Inlet Control HW Elev 18106 it Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 1147 50 AM;a Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 06 - Culvert6 - Sta 96 +90 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 181 16 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 182 10 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 18210 10000 18210 Title Upper Neuse GreenWay, Project Engineer Drew Baird t \ Xcutverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 1147 60 ARC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 06 - Culvert6 - Sta 96 +90 Y2- Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 5 06 cis 182 10 ft 1120 ft/s Weir Roadway (Constant ElevatioigOO cis 182 10 ft NIA Total -- - -- 5 06 cis 182 10 ft N/A Title Upper Nauss GreenWay Project Engineer Drew Baird t % lculvertsX2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05123/12 1148 06 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 06 - Culvert6 - Sta 96 +90 Y2 Component Culvert 1 Culvert Summary Computed Headwater Elevi Inlet Control HW Elev Outlet Control HW Elev, Headwater Depth/Height 18210 ft 18195 It 18210 It 093 Discharge 5 06 cfs Tadwater Elevation 178 50 It Control Type Entrance Control Grades Upstream Invert Length 180 70 It 4000 It Downstream Invert Constructed Slope 178 00 It 0067500 fUft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 1120 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 045 ft 044 ft 087 It 0005802 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Mammngs Coefficient Span Rise 0 013 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev, Ke 18210 It 050 Upstream Velocity Head Entrance Loss 036 It 018 It Inlet Control Properties Inlet Control HW Elev 18195 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t % 1culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05123112 1148 06 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 06 - Culvert6 - Sta 96 +90 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 182 10 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 182 10 It Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 18210 10000 18210 Title Upper Neuse GreenVVay Project Engineer Drew Baird t V \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1148 06 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 TRAM Tc PATH fill, '�� DELINEATION I � I � I I 5 073 A I GREENWAY � Q CULVERT 7 I� 0 a I 6 ! /r t 1 Culvert Computation',: (Hydraulic Analysis) , I , �, �S ` Z s _ � +, x CS By CC Date 2/21/2012 STEWART Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 7 Location Y2 102 +90 Sub Area Area (acres) Imervious Area Pervious Area CW CA Acres C Acres C 1 5 070 0 034 09001 5 036 0 500 0 503 2 549 Totals 5 070 2309 2 549 A = 5 070 acres C = 0 5027 T = 28 018699 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 Intense I in /hr 288 347 391 455 504 Sheet Flow 300 215 201 00467 024 2309 Shallow Conc Flow 840 201 175 0 0310 Unpaved 493 Open Channel Flow 150 175 173 00133 008 195 Time of Concentration = 2802 A = 5 070 acres C = 0 5027 T = 28 018699 min Recurrence Interval Years 2 5 10 25 50 100 Intense I in /hr 288 347 391 455 504 554 Discharge Q (cfs) 733 885 997 1159 1285 1412 Culvert Designer /Analyzer Report 07 - Culvert 7 Sta 102 +90 Y2- Analysis Component Storm Event Design Discharge 9 97 cis Peak Discharge Method User Specified Design Discharge 9 97 cis Check Discharge 11 59 cfs Tadwater Conditions Constant Tadwater Tadwater Elevation 173 00 It Name Description Discharge HW Elev Velocity Culvert 1 1 24 inch Circular 9 97 cis 174 82 ft 7 09 ft/s Weir Roadway (Constant Elevatioi%AO cis 174 82 ft N/A Total - ---- 9 97 cis 174 82 ft N/A Title Upper Neuse GreenWay Protect Engineer Drew Baird t \. lculverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 011 05123112 1148 40 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 07 Culvert 7 - Sta 102 +90 -V2- Component Culvert 1 Culvert Summary Computed Headwater Elevi Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 174 82 ft 17468 It 17482 ft 091 Discharge 9 97 cis Tailwater Elevation 173 00 ft Control Type Entrance Control Grades Upstream Invert Length 173 00 ft 4400 ft Downstream Invert Constructed Slope 172 50 ft 0011364 ft/ft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 709 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 092 ft 090 ft 1 13 ft 0005198 tuft Section Section Shape Section Material Section Size Number Sections Circular Concrete 24 inch 1 Mammngs Coefficient Span Rise 0 013 200 It 200 ft Outlet Control Properties Outlet Control HW Elev Ke 174 82 ft 050 Upstream Velocity Head Entrance Loss 046 It 023 ft Inlet Control Properties Inlet Control HW Elev 17468 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 31 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t IL \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1148 40 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 2 o13 Culvert Designer /Analyzer Report 07 Culvert 7 Sta 102 +90 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 174 82 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 177 20 It Headwater Elevation N/A It Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 17720 10000 17720 Title Upper Neuse GreenWay Project Engineer Drew Baird t % Xculverts%2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 1148 40 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 07 - Culvert 7 - Sta 102 +90 Y2- Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 48 53 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 08795 USA +1 20 3-755 -1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 24 inch Circular 26 68 cis 177 20 ft 8 95 ft/s Weir Roadway (Constant Elevatior%00 cis 177 20 ft NIA Total - - -- 26 68 cis 177 20 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 48 53 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 08795 USA +1 20 3-755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 07 - Culvert 7 - Sta 102 +90 -Y2 Component Culvert 1 Culvert Summary Computed Headwater Elevi Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 177 20 It 17720 It 17665 ft 210 Discharge Tailwater Elevation Control Type 26 68 cis 173 00 It Inlet Control Grades Upstream Invert Length 173 00 It 4400 It Downstream Invert Constructed Slope 172 50 ft 0011364 tuft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcntical 895 it/s Depth Downstream Normal Depth Critical Depth Critical Slope 180 It N/A It 180 ft 0012237 it/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 24 Inch 1 Mannings Coefficient Span Rise 0 013 200 ft 200 ft Outlet Control Properties Outlet Control HW Elev Ke 17665 It 050 Upstream Velocity Head Entrance Loss 1 14 It 067 It Inlet Control Properties Inlet Control HW Elev 17720 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 31 ft 1 1 1 Title Upper Neuse GreenWay Protect Engineer Drew Baird t % %culverts\2012 02 22 cc culverts avrn Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 1148 53 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 07 - Culvert 7 - Sta 102 +90 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 177 20 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 177 20 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17720 10000 17720 Title Upper Neuse GreenWay Project Engineer Drew Baird t \. \cuhmrts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05/23/12 1148 53 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 i Uo \ �.IS W \ LLJ CP l t � o � \ sy t `\ J c UU \ Culvei't,Co111 utBtiOn "' (HydraulidAnalysis) ° 4 �,,� CS By CC Date 2/21/2012 Checked BC Date 2/21/2012 STEWART Project Lower Neuse Greenwa Job Number H9001 00 Description Crabtree Creek Culvert 8 Location Y2 125 +00 k, All Sub Area Area acres Imervious Pervious Area Cw CA Acres Acres C 1 0 160 0 011 0 0 149 0 500 0 528 0 084 Totals 0160 0 084 harge 4,Rational° Methods ,'1� + k Q10 =CIA= 0 61 cfs Q25 =CIA= 069 cfs Culvert Designer /Analyzer Report 08 Culvert 8 Sta 125 +00 Y2- Analysis Component Storm Event Design Discharge 0 61 cis Peak Discharge Method User Specified Design Discharge 0 61 cis Check Discharge 0 69 cis Tadwater Conditions Constant Tailwater Tadwater Elevation 173 40 ft Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 0 61 cis 175 94 ft 1 18 ft/s Weir Roadway (Constant Elevatiod)AO cis 175 94 ft N/A Total -- -- 0 61 cis 175 94 ft N/A Tittle Upper Neuse GreenWay Probed Engineer Drew Baird t \. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 1149 23 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 08 - Culvert 8 - Sta 125 +00 -Y2- Component Culvert 1 Culvert Summary Computed Headwater Elevi Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 175 94 ft 17584 ft 17594 ft 029 Discharge 0 61 cfs Tadwater Elevation 173 40 ft Control Type Entrance Control Grades Upstream Invert Length 175 50 ft 3600 ft Downstream Invert Constructed Slope 172 90 ft 0072222 ft/ft Hydraulic Profile Profile CompositeSlS2 Slope Type Steep Flow Regime N/A Velocity Downstream 1 18 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 050 ft 015 ft 029 ft 0005070 ft/ft Section Section Shape Section Material Section Sure Number Sections Circular Concrete 18 inch 1 Mammngs Coefficient Span Rise 0 013 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 17594 ft 050 Upstream Velocity Head Entrance Loss 010 ft 005 ft Inlet Control Properties Inlet Control HW Elev 17584 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Protect Engineer Drew Baird t %. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 1149 23 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 08 Culvert 8 - Sta 125 +00 -Y2 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 175 94 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 177 14 It Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 17714 10000 17714 Title Upper Neuse GreenWay Project Engineer Drew Baird t % %culverts\2012 02 22 cc culverts cvm Stewart Engineering CutvertMaster v3 2 (03 02 00 O1) 05/23/12 1149 23 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 08 - Culvert 8 - Sta 125 +00 -Y2 Overtopping Analys[s Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 6 53 cis 177 14 ft 1187 ft/s Weir Roadway (Constant ElevatioigOO cfs 177 14 ft N/A Total -- 6 53 cfs 177 14 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t % \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05/23/12 1149 42 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 08 - Culvert 8 - Sta 125 +00 -Y2 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 177 14 It 17700 ft 17714 It 109 Discharge Tadwater Elevation Control Type 6 53 cis 173 40 It Entrance Control Grades Upstream Invert Length 175 50 It 3600 It Downstream Invert Constructed Slope 172 90 It 0072222 Will Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1187 fUs Depth Downstream Normal Depth Critical Depth Critical Slope 052 ft 049 It 099 It 0006500 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 18 inch 1 Mammngs Coefficient Span Rise 0 013 1 50 It 1 50 It Outlet Control Properties Outlet Control HW Elev Ke 17714 ft 050 Upstream Velocity Head 043 ft Entrance Loss 022 ft Inlet Control Properties Inlet Control HW Elev 17700 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 It 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1149 42 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06796 USA +1 203- 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 08 - Culvert 8 - Sta 125 +00 -Y2- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 177 14 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 177 14 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17714 10000 17714 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 oc culverts cvrrn Stewart Engineering CulvertMaster v3 2 103 02 00 01) 05/23/12 1149 42 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 r �h i Lu —�- 1 � � ► a I � I I W \\ I cr- w \� 1 LLJ m � T 0 Q W�--- r - - - - -- 1 opq l al LJLJ LJLJ I t �/ ct cr- � W C) j l CL LAJ S / / �h Culvert Computabdia, (HydraulicPAnalysis)� S By CC Date 2/21/2012 sTEWART Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 9 Location Y2Rev1 136 +50 DrainagwArea . � �, � i [Time of Concentration Sub Area Area (acres) imervious Area Pervious Area Cw CA Sub Area 1 Acres C Acres C 4 29 1 4 025 0 023 0 900 4 002 0 500 0 502 2 022 Shallow Conc Flow 880 Totals 4 025 0 0284 2022 539 [Time of Concentration Discharge + A = 4 025 acres C = 0 5023 T = 19 614373 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 1 100 Intensity I in /hr 3 63 4 29 4 78 Sheet Flow 205 216 201 00732 024 1422 Shallow Conc Flow 880 201 176 0 0284 Unpaved 539 Open Channel Flow 190 176 169 00368 008 158 Time of Concentration = 1961 Discharge + A = 4 025 acres C = 0 5023 T = 19 614373 min Recurrence Interval Years 2 5 F 10 1 25 1 50 1 100 Intensity I in /hr 3 63 4 29 4 78 5 50 1 607 664 Discharge Q (cfs) 7 33 8 67 9 66 11 13 1 1228 1342 Culvert Designer /Analyzer Report 09 - Culvert 9 - Sta 136 +60 - Y2Rev1- Analysis Component Storm Event Design Discharge 9 66 cfs Peak Discharge Method User Specified Design Discharge 9 66 cfs Check Discharge 11 13 cfs Tailwater Conditions Constant Tailwater Tailwater Elevation 168 40 ft Name Description Discharge HW Elev Velocity Culvert 1 1 36 inch Circular 9 67 cfs 171 52 It 1191 ft/s Weir Roadway (Constant Elevabor%00 cfs 171 52 ft N/A Total - ---- 9 67 cfs 171 52 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvnt Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 51 36 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 09 - Culvert 9 - Sta 136 +50 Y2Rev1- Component Culvert 1 Culvert Summary Computed Headwater Elevt Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 17152 ft 171 25 ft 17152 It 051 Discharge 9 67 cis Tadwater Elevation 168 40 It Control Type Entrance Control Grades Upstream Invert Length 170 00 ft 2800 ft Downstream Invert Constructed Slope 167 90 It 0075000 ft/ft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 1191 ft1s Depth Downstream Normal Depth Critical Depth Critical Slope 052 It 045 ft 098 ft 0003324 tuft Section Section Shape Circular SectwrbUdhn9HDPE (Smooth Interior) Section Size 36 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 300 ft 300 It Outlet Control Properties Outlet Control HW Elev Ke 17152 It 050 Upstream Velocity Head Entrance Loss 036 It 018 ft Inlet Control Properties Inlet Control HW Elev 17125 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 71 It 1 1 1 Tale Upper Neuse GreenWay Project Engineer Drew Baird t 1 lculverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05/23/12 11 51 36 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 2 o13 Culvert Designer /Analyzer Report 09 - Culvert 9 - Sta 136 +50 - Y2Rev1- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 171 52 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 It Crest Elevation 174 96 It Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17496 10000 17496 Title Upper Neuse GreenWay Protect Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 11 51 36 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 09 - Culvert 9 Sta 136 +60 Y2Rev1- Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 36 inch Circular 62 01 cfs 174 96 ft 1614 ft/s Weir Roadway (Constant ElevatioiqAO cfs 174 96 ft N/A Total – — 62 01 cis 174 96 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t X. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05123/12 11 51 50 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 09 - Culvert 9 - Sta 136 +50 - Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elevi Inlet Control HW Elev, Outlet Control HW Elev Headwater Depth/Height 174 96 ft 17496 It 17474 ft 165 Discharge Tailwater Elevation Control Type 62 01 cis 168 40 ft Inlet Control Grades Upstream Invert Length 170 00 ft 2800 ft Downstream Invert Constructed Slope 167 90 It 0075000 ft/ft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 1614 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 160 It 1 15 It 254 ft 0006991 tuft Section Section Shape Circular Seciwrtr fflu&HDPE (Smooth Interior) Section Size 36 inch Number Sections 1 Mannmgs Coefficient Span Rise 0 012 300 ft 300 It Outlet Control Properties Outlet Control HW Elev, Ke 17474 It 050 Upstream Velocity Head Entrance Loss 147 It 074 It Inlet Control Properties Inlet Control HW Elev 17496 It Inlet Type Square edge w/headwail K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 71 It 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l 1%oulverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05/23/12 11 5150 AI10 Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 09 - Culvert 9 - Sta 136 +60 - Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 174 96 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 174 96 It Headwater Elevation N/A It Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (it) Elev (it) 000 17496 10000 17496 Title Upper Neuse GreenWay Probed Engineer Drew Balm t l bulverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 51 50 AN® Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 3 of 3 Culvert Computation - ,, (Hydraulic Analysis) w 1 4 t 11 35— By CC Date 2/21/2012 Checked BC Date 2/21/2012 STEWART Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 10 Location Y2Revl 137 +65 IlDrainage Area - j I � � I r � � - -1 II Sub Area Area (acres) Imervious Area Pervious Area Cw CA Acres C Acres C 1 1 5 520 0 031 0 900 5 489 0 500 0 502 2 772 Totals 5 520 967 2 772 IlTime of concentration , , _. t ' ,", � II uiscnar a - f A = 5 520 acres C = 0 5022 T = 13 57189 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 Intensity I in /hr 425 497 5 50 6 31 695 Sheet Flow 155 221 204 01097 024 967 Shallow Conc Flow 745 204 175 0 0389 Unpaved 390 Open Channel Flow 50 175 170 01000 008 038 Time of Concentration = 1357 uiscnar a - f A = 5 520 acres C = 0 5022 T = 13 57189 min Recurrence Interval Years 2 5 10 25 50 100 Intensity I in /hr 425 497 5 50 6 31 695 757 Discharge Q (cfs) 1177 1377 15 25 17 49 1926 2099 Culvert Designer /Analyzer Report 10 - Culvert 10 - Sta 137 +65 Y2Rev1- Analysis Component Storm Event Design Discharge 15 25 cfs Peak Discharge Method User Specified Design Discharge 15 25 cis Check Discharge 17 49 cfs Tai Iwater Conditions Constant Tailwater Tadwater Elevation 171 00 ft Name Description Discharge HW Elev Velocity Culvert 1 1 30 inch Circular 15 26 cis 174 11 ft 12 12 ft/s Weir Roadway (Constant Elevaboq00 cis 174 11 ft N/A Total - -- -- 15 26 cfs 174 11 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 42 32 08entley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 10 Culvert 10 - Sta 137 +65 - Y2Rev1- Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 174 11 ft 17387 ft 17411 ft 084 Discharge 15 26 cfs Tadwater Elevation 17100 ft Control Type Entrance Control Grades Upstream Invert Length 172 00 ft 3600 ft Downstream Invert Constructed Slope 170 00 ft 0055556 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1212 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 076 ft 0 67 ft 132 ft 0004637 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 30 inch 1 Mammngs Coefficient Span Rise 0 013 250 ft 250 ft Outlet Control Properties Outlet Control HW Elev Ke 174 11 ft 050 Upstream Velocity Head Entrance Loss 053 ft 026 ft Inlet Control Properties Inlet Control HW Elev 17387 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 49 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 42 32 gMentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 10 - Culvert 10 - Sta 137 +65 Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 174 11 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 175 16 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 17516 10000 17516 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 42 32 QPBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 Culvert Designer /Analyzer Report 10 -Culvert 10 Sta 137 +65 Y2Rev1- Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 30 inch Circular 29 14 cfs 175 16 ft 13 64 ft/s Weir Roadway (Constant Elevatiot}00 cfs 175 16 ft N/A Total — 29 15 cfs 175 16 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culvertsl2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 42 40 016entley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 10 - Culvert 10 - Sta 137 +65 Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 175 16 ft 17502 ft 17516 ft 1 26 Discharge 29 14 cfs Tadwater Elevation 171 00 ft Control Type Entrance Control Grades Upstream Invert Length 172 00 ft 3600 ft Downstream Invert Constructed Slope 170 00 ft 0055556 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1364 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 1 12 ft 0 94 ft 1 84 ft 0006343 ft/ft Section Section Shape Section Material Section Size Number Sections Circular Concrete 30 inch 1 Mannmgs Coefficient Span Rise 0 013 2 50 ft 2 50 ft Outlet Control Properties Outlet Control HW Elev Ke 175 16 ft 050 Upstream Velocity Head Entrance Loss 088 ft 044 ft Inlet Control Properties Inlet Control HW Elev 17502 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Transition 49 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 ] 02/22/12 08 42 40 01111entley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 10 - Culvert 10 - Sta 137 +65 - Y2Rev1- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 175 16 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 175 16 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 17516 10000 17516 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 42 40 @Mentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 Culvert Computation 4 (Hydraulic Analysts) ; CS By CC Date 2/21/2012 Checked BC Date 2/21/2012 STEWART Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 11 Location Y2Revl 147 +40 Drainage Area s Sub Area Area (acres) Imervious Area Pervious Area Cw CA Acres C Acres C 1 7 180 0 017 0 900 7 163 0 500 0 501 3 597 Totals 7180 924 3 597 I Rime of Concentration I A= 7 180 acres C = 0 5009 T = 12 740538 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min ) Sub Area 1 Intensity I in /hr 437 5 10 5 65 6 47 712 Sheet Flow 165 223 200 01394 024 924 Shallow Conc Flow 660 200 175 0 0379 Unpaved 350 Open Channel Flow 180 175 170 00278 008 169 Time of Concentration = 1274 A= 7 180 acres C = 0 5009 T = 12 740538 min Recurrence Interval Years 2 5 1 10 25 50 100 Intensity I in /hr 437 5 10 5 65 6 47 712 776 Discharge Q (cfs) 1570 18 35 1 20 31 23 28 2562 2793 Culvert Designer /Analyzer Report 11 Culvert 11 - Sta 147 +40 - Y2Rev1- Analysis Component Storm Event Design Discharge 20 31 cfs Peak Discharge Method User Specified Design Discharge 20 31 cis Check Discharge 23 28 cfs Tailwater Conditions Constant Tailwater Tailwater Elevation 170 00 ft Name Description Discharge HW Elev Velocity Culvert 1 1 30 inch Circular 20 32 cfs 173 11 ft 11 38 ft/s Weir Roadway (Constant Elevatio4OO cfs 173 11 ft N/A Total — — — 20 32 cfs 173 11 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts \2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 02/22/12 08 42 48 AFBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 11 - Culvert 11 - Sta 147 +40 Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 173 11 ft 17298 ft 17311 ft 092 Discharge 20 32 cfs Tadwater Elevation 170 00 ft Control Type Entrance Control Grades Upstream Invert Length 170 80 ft 3600 ft Downstream Invert Constructed Slope 169 50 ft 0036111 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1138 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 0 98 ft 0 83 ft 1 53 ft 0004355 ft/ft Section Section Shape Circular SecQorrN i;hHDPE (Smooth Interior) Section Size 30 inch Number Sections 1 Manrnngs Coefficient Span Rise 0 012 2 50 ft 2 50 ft Outlet Control Properties Outlet Control HW Elev Ke 173 11 ft 020 Upstream Velocity Head Entrance Loss 065 ft 013 ft Inlet Control Properties Inlet Control HW Elev 17298 ft Inlet Type Beveled ring 33 7 bevels K 000180 M 250000 C 002430 Y 083000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 49 ft 3 B 1 Title Upper Neuse GreenWay Protect Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 ] 02/22/12 08 42 48 Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 11 -Culvert 11 Sta 147 +40 Y2Rev1- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 173 11 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 175 44 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17544 10000 17544 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts12012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 02/22/12 08 42 48 QNBentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 Culvert Designer /Analyzer Report 11 Culvert 11 - Sta 147 +40 Y2Rev1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01 ] 02/22/12 08 42 55 AIgentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 30 inch Circular 50 88 cfs 175 44 ft 14 14 ft/s Weir Roadway (Constant Elevatio#00 cfs 175 44 ft N/A Total 50 87 cfs 175 44 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01 ] 02/22/12 08 42 55 AIgentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 1 of 3 Culvert Designer /Analyzer Report 11 Culvert 11 Sta 147 +40 - Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth /Height 175 44 ft 17544 ft 17526 ft 1 86 Discharge Tadwater Elevation Control Type 50 88 cfs 170 00 ft Inlet Control Grades Upstream Invert Length 170 80 ft 3600 ft Downstream Invert Constructed Slope 169 50 ft 0036111 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1414 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 1 72 ft 140 ft 231 ft 0011364 ft/ft Section Section Shape Circular SectitiMTk diHDPE (Smooth Interior) Section Size 30 inch Number Sections 1 Manrnngs Coefficient Span Rise 0 012 250 ft 250 ft Outlet Control Properties Outlet Control HW Elev Ke 175 26 ft 020 Upstream Velocity Head Entrance Loss 1 79 ft 036 ft Inlet Control Properties Inlet Control HW Elev 17544 ft Inlet Type Beveled ring 33 7 bevels K 000180 M 250000 C 002430 Y 083000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 49 ft 3 B 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts \2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01 ] 02/22/12 08 42 55 QISentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 2 of 3 Culvert Designer /Analyzer Report 11 -Culvert 11 Sta 147 +40 Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 175 44 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 175 44 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 1 00 Sta (ft) Elev (ft) 000 17544 10000 17544 Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvm Stewart Engineenng CulvertMaster v3 2 (03 02 00 01] 02/22/12 08 42 55 GMentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 1666 Page 3 of 3 l i CRABTREE CREEK PR rOSED GREENWAY T AIL i � � � � ♦ `. 1 1 � �A� � I ! 4J40 AG tU VERT 12 % �� 6,tv DELINEATIONS (TYP) \ Tc PATH `� ♦♦ %� , ` (TYP) i Culvert Computation (Hydraulic Analysis) By CC Date 2/21/2012 (f C! Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 12 Location Y2Rev1 162 +65 Drainage Area � t " Time of Concentration Sub Area Area (acres) Imervious Area Pervious Cw CA Sub Area 1 Acres C Acres MArea 4 22 1 12 115 0 033 0 900 12 082 00652 0 501 6 071 Shallow Conc Flow 985 Totals 12115 0 0640 6 071 402 Time of Concentration Discharge- , f A= 12115 acres C = 0 5011 T = 20 35016 min -1 Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 1 100 intensity (in /hr), 3 56 4 22 4 70 Sheet Flow 230 255 240 00652 024 1633 Shallow Conc Flow 985 240 177 0 0640 Unpaved 402 Open Channel Flow 150 177 172 00333 008 1 37 Time of Concentration = 2035 Discharge- , f A= 12115 acres C = 0 5011 T = 20 35016 min -1 Recurrence Interval Years 2 5 10 25 50 1 100 intensity (in /hr), 3 56 4 22 4 70 542 5 98 654 Discharge Q (cfs) 2162 25 61 1 28 54 1 3290 1 3633 1 3971 Culvert Designer /Analyzer Report 12 - Culvert 12 Sta 162 +65 Y2Rev1- Analysis Component Storm Event Design Discharge 28 54 cis Peak Discharge Method User Specified Design Discharge 28 54 cfs Check Discharge 32 90 cis Tadwater Conditions Constant Tadwater Tadwater Elevation 172 40 ft Name Description Discharge HW Elev Velocity Culvert 1 1-42 inch Circular 28 53 cfs 174 90 ft 8 60 ft/s Weir Roadway (Constant Elevatiof%AO cis 174 90 ft N/A Total - --- -- 28 53 cfs 174 90 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t %- Vculverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 11 56 50 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 12 - Culvert 12 Sta 162 +66 - Y2Rev1- Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev, Headwater Depth/Height 174 90 ft 17465 It 17490 It 074 Discharge Tadwater Elevation Control Type 28 53 cis 172 40 ft Entrance Control Grades Upstream Invert Length 172 30 It 3600 It Downstream Invert Constructed Slope 171 90 It 0011111 ft/ft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 860 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 132 ft 1 19 It 165 It 0003367 ft/ft Section Section Shape Circular SecfilmuL#Mnr9HDPE (Smooth Interior) Section Size 42 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 350 It 350 ft Outlet Control Properties Outlet Control HW Elev Ke 17490 It 050 Upstream Velocity Head 064 ft Entrance Loss 032 ft Inlet Control Properties Inlet Control HW Elev 17465 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 96 It 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l lculvertM2012 02 22 cc culverts corn Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05/23/12 11 56 50 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 12 - Culvert 12 Sta 162 +65 - Y2Rev1- Component Weir Hydraulic Component(s) Roadway (Constant Elevabon) Discharge 0 00 cis Allowable HW Elevation 174 90 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 178 19 ft Headwater Elevation N/A it Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17819 10000 17819 Title Upper Neuse GreenWay Project Engineer Drew Baird t V \culverts\2012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123112 11 56 50 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 12 Culvert 12 - Sta 162 +65 Y2Rev1 Title Upper Neuse GreenWay Probed Engineer Drew Baird t % \cuNerts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 1157 07 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 142 inch Circular 91 06 cis 178 19 ft 1185 ft/s Weir Roadway (Constant ElevatlogOO cis 178 19 ft N/A Total - ---- 9106 cis 17819 It N/A Title Upper Neuse GreenWay Probed Engineer Drew Baird t % \cuNerts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 1157 07 AMO Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 12 - Culvert 12 - Sta 162 +65 - Y2Rev1- Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 178 19 ft 17819 ft 17783 ft 168 Discharge Tadwater Elevation Control Type 91 06 cis 172 40 ft Inlet Control Grades Upstream Invert Length 172 30 ft 3600 ft Downstream Invert Constructed Slope 171 90 ft 0011111 Wit Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1185 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 261 ft 235 ft 296 ft 0006631 Wit Section Section Shape Circular SecfalewWbw&HDPE (Smooth Interior) Section Size 42 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 350 ft 350 ft Outlet Control Properties Outlet Control HW Elev Ke 177 83 ft 050 Upstream Velocity Head Entrance Loss 171 ft 086 ft Inlet Control Properties Inlet Control HW Elev 17819 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 96 ft 1 1 1 Tale Upper Neuse GreenWay Project Engineer Drew Baird t X. lculvertsN2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 57 07 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 12 - Culvert 12 - Sta 162 +66 - Y2Rev1- Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Elev (ft) Discharge 0 00 cis Allowable HW Elevation 17819 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 178 19 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 17819 10000 17819 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 1157 07 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Computation- (hydraulic Analysis) r S By CC Date 2/21/2012 STEWART Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 13 Location Y2Revl 169 +95 Sub Area Area (acres) Imervious Area Pervious Area Cw CA Acres C Acres C 1 4 140 0 024 0 900 4 116 0 500 0 502 2080 Totals 4140 1283 2080 A = 4140 acres C = 0 5023 T = 15 509725 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min ) Sub Area 1 Intensity I in /hr 399 469 520 597 658 Sheet Flow 110 211 208 00273 024 1283 Shallow Conc Flow 600 208 176 0 0533 Unpaved 268 Open Channel Flow 40 176 174 00500 008 042 Time of Concentration =1 1551 A = 4140 acres C = 0 5023 T = 15 509725 min Recurrence Interval Years 2 5 10 25 50 1 100 Intensity I in /hr 399 469 520 597 658 717 Discharge Q (cfs) 831 9_75 10 81 12 42 1368 1492 Culvert Designer /Analyzer Report 13 - Culvert 13 - Sta 169 +95 - Y2Rev1 Analysis Component Storm Event Design Discharge 10 81 cis Title Upper Neuse GreenWay Project Engineer Drew Baird t % \culverts\2012 02 22 cc culverts corn Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123112 11 57 41 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Peak Discharge Method User Specified Design Discharge 10 81 cis Check Discharge 12 42 ofs TailwaterConditions Constant Tailwater Tailwater Elevation 172 50 ft Name Description Discharge Culvert 1 1 24 inch Circular 10 81 cis Weir Roadway (Constant ElevatiorgOO cfs Total - - - -- 10 81 cis HW Elev Velocity 174 41 ft 7 50 ft/s 174 41 ft N/A 174 41 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t % \culverts\2012 02 22 cc culverts corn Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123112 11 57 41 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 13 - Culvert 13 - Sta 169 +95 - Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elev, Inlet Control HW Elev, Outlet Control HW Elev Headwater Depth/Height 174 41 It 17427 It 17441 ft 096 Discharge 10 81 crs Tadwater Elevation 172 50 It Control Type Entrance Control Grades Upstream Invert Length 172 50 ft 4400 It Downstream Invert Constructed Slope 172 00 ft 0011364 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercntical 750 ft/s Depth Downstream Normal Depth Cnbcal Depth Critical Slope 094 ft 090 It 1 18 ft 0004559 ft/ft Section Section Shape Circular SecOmeft9loxhHDPE (Smooth Interior) Section Size 24 Inch Number Sections 1 Mannings Coefficient Span Rise 0 012 200 It 200 ft Outlet Control Properties Outlet Control HW Elev Ke 174 41 It 050 Upstream Velocity Head Entrance Loss 049 It 024 ft Inlet Control Properties Inlet Control HW Elev 17427 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 31 It 1 1 1 Title Upper Nauss GreenWay Protect Engineer Drew Baird t \. \culverts\2012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05/23112 11 57 41 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 13 Culvert 13 Sta 169 +95 Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 174 41 It Roadway Width 16 00 It Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 176 71 It Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17671 10000 17671 Title Upper Neuse GreenWay Probed Engineer Drew Baird t l 1culverts%2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 11 57 41 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 13 - Culvert 13 - Sta 169 +96 - Y2Rev1 Title Upper Neuse GreenWay Project Engineer Drew Baird t 1. %culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 58 00 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 24 inch Circular 26 73 cis 176 71 ft 9 38 ft/s Weir Roadway (Constant ElevatiogOO cis 176 71 ft N/A Total - -- — 26 73 cis 176 71 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t 1. %culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 58 00 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 13 - Culvert 13 - Sta 169 +95 - Y2Revl Component Culvert 1 Culvert Summary Computed Headwater Elevt 176 71 ft Inlet Control HW Elev, 17671 ft Outlet Control HW Elev 17618 ft Headwater Depth/Height 211 Discharge Tallwater Elevation Control Type 26 73 cis 172 50 ft Inlet Control Grades Upstream Invert Length 172 50 ft 4400 ft Downstream Invert Constructed Slope 172 00 ft 0011364 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 938 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 170 ft 168 ft 180 ft 0010463 ft/ft Section Section Shape Circular Sectdmtr OMB'diHDPE (Smooth Interior) Section Sure 24 Inch Number Sections 1 Mannings Coefficient Span Rise 0 012 200 ft 200 ft Outlet Control Properties Outlet Control HW Elev, Ke 17618 ft 050 Upstream Velocity Head Entrance Loss 125 ft 062 ft Inlet Control Properties Inlet Control HW Elev 17671 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 31 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t V 1culvertsX2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 58 00 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 13 - Culvert 13 Sta 169 +96 - Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 176 71 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 10000 It Crest Elevation 176 71 ft Headwater Elevation N/A It Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17671 10000 17671 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/23/12 11 58 00 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 F- z 0 NO CREEK C R�TREE_ P,RQP9SED GREENWAY 14.954 AC r ` Tc PATH `N �- DEUNEATION TONS � � 1 I 1 Culvert,Computatlon- (Hydraulic Analysis) S By CC Date 2/21/2012 STEWART Checked BC Date 2/21/2012 Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 14 Location Y2Rev1 181 +15 Drainage Area 4 ,- a i 0 1� - I � " 4 Time of Concentration n t Sub Area Area (acres) Imervious Area Pervious Area Cw CA Sub Area 1 Acres C Acres C 1 3 18 1 14 954 0 057 0 900 14 897 1 0 500 0 502 7 500 Shallow Conc Flow 1365 Totals 14 954 0 0381 7 500 722 Time of Concentration n t Discharge 1 4 y 4 A = 14 954 acres C =—O 5015 T = 32 584821 min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 1 100 Intense I m /hr 2 61 1 3 18 1 3 60 Sheet Flow 280 231 222 00321 024 2536 Shallow Conc Flow 1365 222 170 0 0381 Unpaved 722 Open Channel Flow 215 170 166 0 0186 008 226 Time of Concentration = 3258 Discharge 1 4 y 4 A = 14 954 acres C =—O 5015 T = 32 584821 min Recurrence Interval Years 2 5 10 1 25 1 50 1 100 Intense I m /hr 2 61 1 3 18 1 3 60 4 19 466 1 513 Discharge Q (cfs) 19 60 1 23 85 1 26 98 3144 3495 1 3845 Culvert Designer /Analyzer Report 14 - Culvert 14 - Sta 181 +15 Y2Rev1 Analysis Component Storm Event Design Discharge 26 98 cis Peak Discharge Method User Specified Design Discharge 26 98 cis Check Discharge 3144 cis Tadwater Conditions Constant Tadwater Tadwater Elevation 167 30 It Name Description Discharge HW Elev Velocity Culvert 1 1 36 inch Circular 26 62 cis 17148 ft 12 87 ft/s Weir Roadway (Constant Elevatioiq.38 cfs 17148 It N/A Total - - - - --- 27 00 cis 17148 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Balm t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05123/12 1158 34 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 14 - Culvert 14 - Sta 181 +15 - Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 17148 ft 17123 ft 17148 It 089 Discharge 26 62 cfs Tadwater Elevation 167 30 ft Control Type Entrance Control Grades Upstream Invert Length 168 80 ft 5600 ft Downstream Invert Constructed Slope 166 70 ft 0037500 Wit Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 1287 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 1 00 It 089 It 167 ft 0003829 ft/ft Section Section Shape Circular Sec6MUMJA61hHDPE (Smooth Interior) Section Size 36 inch Number Sections 1 Manrnngs Coefficient Span Rise 0 012 300 It 300 ft Outlet Control Properties Outlet Control HW Elev Ke 17148 ft 050 Upstream Velocity Head Entrance Loss 068 ft 034 ft Inlet Control Properties Inlet Control HW Elev 17123 ft Inlet Type Square edge w /headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 71 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t % lculverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01] 05123/12 11 58 34 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 14 Culvert 14 - Sta 181 +15 Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 38 cis Allowable HW Elevation 17148 ft Roadway Width 18 00 ft Overtopping Coefficient 2 91 US Length 100 00 ft Crest Elevation 17147 ft Headwater Elevation 17148 ft Discharge Coefficient (Cr) 291 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17147 10000 17147 Title Upper Neuse GreenWay Project Engineer Drew Baird t l Xcuiverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 11 58 34 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 14 - Culvert 14 - Sta 181 +15 - Y2Rev1 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 36 inch Circular 26 42 cis 17147 It 12 85 ft/s Weir Roadway (Constant Elevaboig00 cis 17147 ft N/A Total — - - -- 26 42 cis 17147 ft N/A Title Upper Neuse GreenWay Project Engineer Draw Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05123/12 11 58 53 AMC Bentley Systems Inc Hassled Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 14 - Culvert 14 Sta 181 +15 - Y2Rev1 Component Culvert 1 Culvert Summary Computed Headwater Elew Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 17147 It 17121 ft 17147 ft 089 Discharge Tallwater Elevation Control Type 26 42 cis 167 30 It Entrance Control Grades Upstream Invert Length 168 80 ft 5600 ft Downstream Invert Constructed Slope 166 70 It 0037500 ft/ft Hydraulic Profile Profile S2 Slope Type Steep Flow Regime Supercritical Velocity Downstream 1285 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 100 It 088 It 166 ft 0003820 ft/ft Section Section Shape Circular SecGxurtJAlMHDPE (Smooth Interior) Section Size 36 inch Number Sections 1 Mannmgs Coefficient Span Rise 0 012 300 It 300 ft Outlet Control Properties Outlet Control HW Elev Ke 17147 ft 050 Upstream Velocity Head 067 it Entrance Loss 034 It Inlet Control Properties Inlet Control HW Elev 17121 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 71 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t V \culverts\2012 02 22 cc culverts cvm Stewart Engineering CutvertMaster v3 2 [03 02 00 011 05123/12 11 58 53 AID Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 14 - Culvert 14 - Sta 181 +15 - Y2Rev1 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 17147 ft Roadway Width 1800 ft Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 17147 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17147 10000 17147 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 011 05/23/12 11 58 53 AMV Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 L- - I � I 1 � I I I 1 1 1 1 � ,o i � I i I I I I I I I � I I � _ I I � 1 r' I I � I I d 0 Z 1 pe 11 3 a 1 o I /� I Qp / � f r /r i 0 D I\ m0 � � ^W IL % 1 CL /� 1 / \ 3 / h `l o a h� fit' h / 4j � F IP ... .,• ♦ � � x &^ t'2t ��, x ,2 a -:, srw ) ` - r�S y. '!a .� max. h� ..,..�.'r� -� s o- �i.+w Stia .+ i G �,k. sres ��, �. Sub Area Area (acres) Ieoous Area Pervious Cw CA Sub Area 1 Acres C Acres MArea 606 1 2 869 0 188 0 900 2 681 01000 0 526 1 510 Shallow Conc Flow 407 Totals 2 869 00147 1 510 346 ... .,• ♦ � � x &^ t'2t ��, x ,2 a -:, srw ) ` - r�S y. '!a .� max. h� ..,..�.'r� -� s o- �i.+w Stia .+ i G �,k. sres ��, �. 1 Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min ) Sub Area 1 100 Intense I in /hr 526 606 667 Sheet Flow 50 178 173 01000 024 406 Shallow Conc Flow 407 173 167 00147 Unpaved 346 Open Channel Flow 185 167 166 00054 008 324 Time of Concentration = 752 1 Recurrence Interval ears 2 5 10 25 50 100 Intense I in /hr 526 606 667 759 833 905 Discharge Q (cfs) 793 914 10 07 1147 1258 1367 Culvert Designer /Analyzer Report 15 - Culvert 15 - Sta 202 +30 Analysis Component Storm Event Design Discharge 10 07 cis Peak Discharge Method User Specified Design Discharge 10 07 cis Check Discharge 1147 cis Tailwater Conditions Constant Tailwater Tadwater Elevation 167 00 ft Name Description Discharge HW Elev Velocity Culvert 1 3 18 inch Circular 10 08 cis 167 60 It 4 35 ft/s Weir Roadway (Constant ElevatioiqAO cis 167 60 It N/A Total - - -- 10 08 cis 167 60 it N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 19 43 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 15 Culvert 15 - Sta 202 +30 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev, Headwater Depth/Height 167 60 ft 16750 It 16760 ft 074 Discharge Tadwater Elevation Control Type 10 08 cis 167 00 ft Entrance Control Grades Upstream Invert Length 16650 ft 2000 ft Downstream Invert Constructed Slope 166 40 It 0005000 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 435 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 068 ft 068 ft 070 It 0004447 ft/ft Section Section Shape Circular SecVmorVgdbMHDPE (Smooth Interior) Section Size 18 inch Number Sections 3 Mannings Coefficient Span Rise 0 012 1 50 It 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 16760 It 050 Upstream Velocity Head 027 it Entrance Loss 013 It Inlet Control Properties Inlet Control HW Elev 16750 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 53 It 1 1 1 Idle Upper Neuse GreenWay Project Engineer Drew Baird t l lculverts%2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 19 43 AMC Bentley Systems Inc Haested Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 15 Culvert 15 - Sta 202 +30 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 167 60 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 ft Crest Elevation 17147 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 17147 10000 17147 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 0 1 05/24/12 10 19 43 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 15 - Culvert 15 - Sta 202 +30 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 3 18 inch Circular 52 94 cis 17147 ft 10 10 ft/s Weir Roadway (Constant ElevatioigOO cfs 17147 ft N/A Total - - -- 52 94 cfs 17147 ft N/A Tdle Upper Neuse GreenWay Project Engineer Drew Baird t \. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 20 02 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 15 Culvert 15 - Sta 202 +30 Component Culvert 1 Culvert Summary Computed Headwater Elevi Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 17147 It 17147 ft 17069 ft 331 Discharge Tailwater Elevation Control Type 52 94 cfs 167 00 It Inlet Control Grades Upstream Invert Length 166 50 ft 2000 ft Downstream Invert Constructed Slope 166 40 It 0005000 ft/ft Hydraulic Profile Profile CompositeM2PressureProfile Slope Type Mild Flow Regime Subcntical Velocity Downstream 1010 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 145 ft N/A ft 145 It 0021048 ft/ft Section Section Shape Circular SecGmuhVdhrdtHDPE (Smooth Interior) Section Size 18 inch Number Sections 3 Mannings Coefficient Span Rise 0 012 1 50 ft 1 50 It Outlet Control Properties Outlet Control HW Elev Ke 17069 ft 050 Upstream Velocity Head Entrance Loss 1 55 It 077 It Inlet Control Properties Inlet Control HW Elev 17147 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 53 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05124/12 10 20 02 Ab® Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 15 - Culvert 15 Sta 202 +30 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 17147 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 100 00 ft Crest Elevation 171 47 ft Headwater Elevation N/A It Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Ste (ft) Elev (ft) 000 17147 10000 17147 Title Upper Neuse GreenWay Project Engineer Drew Baird 11, �culverts=12 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 103 02 00 01J 05124/12 10 20 02 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06796 USA +1 203 - 755 -1666 Page 3 of 3 F p F R f F c �F f F c c + C R F. F f F � i ��€ F r i r r r r r r r r r r PROP Tc r r 2 08 A C ASPHALT TRAIL f F F F F Fr� F c c c c f � I i i i / l I / r / i / / R F. F f F � i ��€ F r i r r r r r r r r r r PROP Tc r r 2 08 A C ASPHALT TRAIL f F F F F Fr� F c c c c f � I i i i / l I ii o� . n . it �rsr tore . » r it Sub Area Area (acres) Imervious Area V Pervious Area Cw CA Sub Area 1 Acres C Acres C 460 1 2080 0 430 0 900 1 1 650 1 0 500 0 583 1 212 Shallow Conc Flow 205 Totals 2080 0 0829 1 212 074 ii o� . n . it �rsr tore . » r it . m y m A= 2 080 acres C 0 5827 T= 16408302min Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 100 Intense I in /hr 391 460 511 Sheet Flow 130 215 212 00231 024 1567 Shallow Conc Flow 205 212 195 0 0829 Unpaved 074 Open Channel Flow 108 195 175 01852 008 055 Time of Concentration = 1641 . m y m A= 2 080 acres C 0 5827 T= 16408302min Recurrence Interval ears 2 5 10 25 50 100 Intense I in /hr 391 460 511 587- 647 706 Discharge Q (cfs) 474 558 619 711 784 855 Culvert Designer /Analyzer Report Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05124/12 10 31 24 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 -1666 Page 1 of 3 16 - Culvert 16 - Sta 167 +76 Analysis Component Storm Event Design Discharge 6 19 cis Peak Discharge Method User Specified Design Discharge 6 19 cis Check Discharge 7 11 cis TailwaterConditons Constant Tailwater Tailwater Elevation 173 20 ft Name Description Discharge Culvert 1 1 24 inch Circular 0 00 cfs Weir Roadway (Constant ElevatioigOO cfs Total -- - -- 0 00 cis HW Elev, Velocity 173 20 ft 0 00 ft/s 173 20 ft N/A 173 20 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05124/12 10 31 24 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 16 Culvert 16 - Sta 157 +75 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height N/A ft WA It N/A ft 000 Discharge Tadwater Elevation Control Type 0 00 cis 173 20 it Inlet Control Grades Upstream Invert Length 176 34 it 4800 ft Downstream Invert Constructed Slope 172 56 ft 0078750 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream Dry Dry Subcntical 000 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 000 ft 000 it 000 it 0000000 ft/ft Section Section Shape Circular SecG=rbYdh r9HDPE (Smooth Interior) Section Size 24 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 200 ft 200 ft Outlet Control Properties Outlet Control HW Elev, Ke N/A ft 050 Upstream Velocity Head Entrance Loss 000 ft 030 it Inlet Control Properties Inlet Control HW Elev N/A It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 31 it 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t N. %culverts%2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 31 24 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 16 - Culvert 16 - Sta 157 +75 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 173 20 ft Roadway Width 18 00 ft Overtopping Coefficient 0 06 US Length 100 00 It Crest Elevation 17147 it Headwater Elevation N/A ft Discharge Coefficient (Cr) 303 Submergence Factor (Kt) 002 Sta (ft) Elev (ft) 000 17147 10000 17147 Title Upper Neuse GreenWay Protect Engineer Drew Baird It l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05124/12 10 3124 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 16 - Culvert 16 - Sta 167 +76 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 24 inch Circular 0 00 cis 17147 ft 0 00 ft/s Weir Roadway (Constant ElevaboigOO cfs 17147 ft N/A Total -- 0 00 cis 17147 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \. Nculverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05/24/12 10 3145 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 16 - Culvert 16 - Sta 157 +75 Component Culvert 1 Culvert Summary Computed Headwater Elev, Inlet Control HW Elev, Outlet Control HW Elev, Headwater Depth/Height N/A ft WA ft N/A ft 000 Discharge Taiiwater Elevation Control Type 0 00 cfs 173 20 It Inlet Control Grades Upstream Invert Length 176 34 ft 4600 ft Downstream Invert Constructed Slope 172 56 ft 0078750 ttht Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream Dry Dry Subcntical 000 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 000 ft 000 ft 000 ft 0000000 ft/ft Section Section Shape Circular SecQzmrLJ0W &HDPE (Smooth Interior) Section Size 24 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 200 ft 200 ft Outlet Control Properties Outlet Control HW Elev Ke N/A ft 050 Upstream Velocity Head Entrance Loss 000 ft 030 ft Inlet Control Properties Inlet Control HW Elev N/A ft Inlet Type Square edge w/headwail K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 31 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t l lculvertsN2012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 103 02 00 011 05/24/12 10 3145 AMC Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 16 - Culvert 16 - Sta 157 +75 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 17147 ft Roadway Width 18 00 ft Overtopping Coefficient 0 05 US Length 10000 it Crest Elevation 17147 It Headwater Elevation N/A ft Discharge Coefficient (Cr) 303 Submergence Factor (Kt) 002 Ste (ft) Elev, (ft) 000 17147 10000 17147 Title Upper Neuse GreenWay Project Engineer Drew Baird t V lculvertsX2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 3145 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 A. • _O+ 0 N v U) 'Zh �0 i Q Q = W1Z} 1 I♦ I 1 LL LL � I LL , LL, / LL / /LL O / _J N � I Z } / / 4 Q W / 4L ' Z w / ' � o �r t CL O I LL ILL Lug \ \ OM CL a I W� IY O I CL /y , J � J � I Y � � J ` I � J Y � 1 y 0 s 3 y d O I �. in y � l - AM, I.On i d a alysis (� S By STEWART Checked Project Lower Neuse Greenway Job Number H9001 00 Description Crabtree Creek Culvert 17 & Ditch 4 Location 203 +59 CC MT Date Date 5/24/2012 5/24/2012 DOW Area Sub Area Area (acres) Irvious Area Pervious Area Cw CA Acres C Acres C 1 1 600 0 255 0 900 1 345 0 500 0 564 0 902 Totals 1 600 0902 Length L (ft) Elev 1 Elev 2 Slope s (ft/ft) Manning s n Travel Time T (min) Sub Area 1 Sheet Flow Shallow Conc Flow Open Channel Flow 165 375 225 209 200 181 200 181 170 00545 00507 00489 024 Unpaved 008 1344 172 161 Time of Concentration = 1517 Dischar e A= 1 600 acres C = 05638 T = Recurrence Interval 2 5 1 10 25 1516562 ears 50 SWIM min 100 Intense I in /hr 403 4 L2__J 5 23 601 662 722 Discharge Q (cfs) 363 426 1 472 542 597 1 651 Culvert Designer /Analyzer Report 17 Culvert 17 - Sta 203 +59 Analysis Component Storm Event Design Discharge 4 72 cfs Peak Discharge Method User Specified Design Discharge 4 72 cfs Check Discharge 5 42 cfs Tadwater Conditions Constant Tadwater Tadwater Elevation 167 90 ft Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 4 72 cfs 169 04 ft 5 66 ft/s Weir Roadway (Constant Elevatior4OO cfs 169 04 ft N/A Total - - -- 4 72 cfs 169 04 ft N/A Title Upper Neuse GreenWay Project Engineer ngineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 011 05124/12 10 18 48 AMC Bentley Systems Inc Hassled Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 17 - Culvert 17 - Sta 203 +59 Component Culvert 1 Culvert Summary Computed Headwater Elev Inlet Control HW Elev, Outlet Control HW Elev Headwater Depth/Height 169 04 ft 16894 ft 16904 ft 090 Discharge 4 72 cfs Tailwater Elevation 167 90 ft Control Type Entrance Control Grades Upstream Invert Length 167 70 It 3600 It Downstream Invert Constructed Slope 167 40 ft 0008333 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream S2 Steep Supercritical 566 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 072 It 071 It 083 It 0004829 ft/ft Section Section Shape Circular SecGxuLtRhr&HDPE (Smooth Interior) Section Size 18 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 16904 ft 050 Upstream Velocity Head Entrance Loss 034 ft 017 ft Inlet Control Properties Inlet Control HW Elev, 16894 It Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1 8 ft 1 1 1 Title Upper Neuse GreenWay Protect Engineer Drew Baird t \. 1culverts\2012 02 22 cc culverts corn Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05124/12 10 18 48 AMD Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 17 - Culvert 17 Sta 203 +59 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cis Allowable HW Elevation 169 04 ft Roadway Width 18 00 ft Overtopping Coefficient 2 90 US Length 10000 it Crest Elevation 173 00 it Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17300 10000 17300 Title Upper Neuse GreenWay Project Engineer Drew Baird t \. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01) 05/24/12 10 18 48 AM* Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203- 755 -1666 Page 3 of 3 Culvert Designer /Analyzer Report 17 Culvert 17 - Sta 203 +59 Overtopping Analysis Name Description Discharge HW Elev Velocity Culvert 1 1 18 inch Circular 18 37 cfs 173 00 ft 10 49 ft/s Weir Roadway (Constant Elevatioi%00 cis 173 00 ft N/A Total - - -- 18 37 cis 173 00 ft N/A Title Upper Neuse GreenWay Project Engineer Drew Baird t \ \culverts\2012 02 22 cc culverts cvrn Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 19 16 AND Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 -755 -1666 Page 1 of 3 Culvert Designer /Analyzer Report 17 - Culvert 17 - Sta 203 +59 Component Culvert 1 Culvert Summary Computed Headwater Elevs Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/Height 173 00 ft 17300 ft 17234 ft 353 Discharge Tailwater Elevation Control Type 18 37 cis 167 90 ft Inlet Control Grades Upstream Invert Length 167 70 ft 3600 ft Downstream Invert Constructed Slope 167 40 ft 0008333 ft/ft Hydraulic Profile Profile CompositeM2PressureProfile Slope Type Mild Flow Regime Subcnbcal Velocity Downstream 1049 ft/s Depth Downstream Normal Depth Critical Depth Critical Slope 145 ft N/A ft 145 ft 0022944 ft/ft Section Section Shape Circular SedknrVgdbrttHDPE (Smooth Interior) Section Size 18 inch Number Sections 1 Mammngs Coefficient Span Rise 0 012 1 50 ft 1 50 ft Outlet Control Properties Outlet Control HW Elev Ke 172 34 ft 050 Upstream Velocity Head Entrance Loss 168 ft 084 ft Inlet Control Properties Inlet Control HW Elev 17300 ft Inlet Type Square edge w/headwall K 000980 M 200000 C 003980 Y 067000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 1 6 ft 1 1 1 Title Upper Neuse GreenWay Project Engineer Drew Baird t \. \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 (03 02 00 01] 05124/12 10 19 16 AMA Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 2 of 3 Culvert Designer /Analyzer Report 17 - Culvert 17 - Sta 203 +59 Component Weir Hydraulic Component(s) Roadway (Constant Elevation) Discharge 0 00 cfs Allowable HW Elevation 173 00 ft Roadway Width 18 00 It Overtopping Coefficient 2 90 US Length 100 00 It Crest Elevation 173 00 ft Headwater Elevation N/A ft Discharge Coefficient (Cr) 290 Submergence Factor (Kt) 100 Sta (ft) Elev (ft) 000 17300 10000 17300 Idle Upper Neuse GreenWay Protect Engineer Drew Baird t l \culverts\2012 02 22 cc culverts cvm Stewart Engineering CulvertMaster v3 2 [03 02 00 01] 05/24/12 10 19 16 AND Bentley Systems Inc Haestad Methods Solution Center Watertown CT 06795 USA +1 203 - 755 -1666 Page 3 of 3 OS STEWART CHANNEL DESIGN CALCULATIONS Swale from Sta 89 +55 to 90 +40 Y2 RT PROJECT Neuse River Trail 10 YEAR STORM DATE 2012 02 22 REVISED jWEIGHTEEhC--PVAI1U 050 (ft) PERVIOUS AREA = 0 215 (Ac) PERVIOUS C = 0 350 IMPERVIOUS AREA 0 020 (Ac) IMPERVIOUS C = 0 950 TOTAL AREA = 0 235 (Ac) WEIGHTED C = 0 401 CHANNEL DIMENSIONS DEPTH = 050 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y'D S Tractive Force (#/sq ft) Y =WEIGHT OF WATER (62 4 Nc1) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 04 (#/sq ft) Maximum Allowable Tractive Force L JUTE NET 045 (#/sq ft) I CURLED MAT 155 (#/sq ft) N PSRM 320 (#Isq ft) I CLASS B RIPRAP 350 (#/sq ft) N CLASS I RIPRAP 500 (#(sq ft) G CLASS II RIPRAP 750 (#/sq ft) Z ACTUAL 05 ft \ / (DEPTH) \ 0 ft (BOTTOM WIDTH) 421 Fayetteville Street Suite 400 Raleigh NC 27601 Tel 919 380 8750 Fax 919 380 8752 www stewart eng com s STEWART CHANNEL DESIGN CALCULATIONS Swale from Sta 180 +60 to 181 +00 Y2REV1 RT PROJECT Neuse River Trail 10 YEAR STORM DATE 201202 22 REVISED 1WEIGHTEMAVALW 050 (ft) WEIGHTED C = PERVIOUS AREA = 0 561 (Ac,) PERVIOUS C = 0 350 TOTAL FLOW = IMPERVIOUS AREA 0 000 (Ac) IMPERVIOUS C = 0 950 N = TOTAL AREA = 0 561 (Ac) WEIGHTED C = 0 350 M = 18ATtIONA001MUH0 050 (ft) WEIGHTED C = 0 350 INTENSITY 10YR = 722 (in/hr) TOTAL AREA = 0 561 (Ac) TOTAL FLOW = 142 (cfs) IDESIGNIACRITER CHANNEL LINING Y =WEIGHT OF WATER (624#10 N = 0 030 (Mannmgs n) SLOPE= 0 016 (ftHt) Z REQUID= 023 M = 3 1 (sideslope) CHANNEL DIMENSIONS DEPTH = 050 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y'D S Tractive Force (Nsq ft) Y =WEIGHT OF WATER (624#10 D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 05 (#/sq ft) Maximum Allowable Tractive Force L JUTE NET 045 (#/sq ft) I CURLED MAT 155 (#/sq ft) N PSRM 320 (#/sq ft) I CLASS B RIPRAP 350 (#/sq ft) N CLASS I RIPRAP 500 (#/sq ft) G CLASS II RIPRAP 750 (#/sq ft) Z ACTUAL Oft (BOTTOM WIDTH) 421 Fayetteville Street Suite 400 Raleigh NC 27601 Tel 919 380 8750 Fax 919 380 8752 www stewart eng com CS STEWART CHANNEL DESIGN CALCULATIONS Swale from Sta 54 +75 to 56 +75 Y2 PROJECT Neuse River Trail 10 YEAR STORM DATE 2012 0518 REVISED 1WEIGUTIEWOVAL101 050 (ft) WEIGHTED C = PERVIOUS AREA = 0 338 (Ac) PERVIOUS C = 0 350 TOTAL FLOW = IMPERVIOUS AREA 0 000 (Ac) IMPERVIOUS C = 0 950 CHANNEL LINING TOTAL AREA = 0 338 (AC) WEIGHTED C = 0 350 Z REQUID= IRATIONAUMEM0 050 (ft) WEIGHTED C = 0 350 INTENSITY 10YR = 722 (Whr) TOTAL AREA = 0 338 (Ac) TOTAL FLOW = 085 (ds) Tractive Force (#/sq ft) IDESIGNICRITER Y =WEIGHT OF WATER (62 4 #/cf) CHANNEL LINING N = 0 030 (Mannmgs n) SLOPE= 0 010 (m) Z REQUID= 017 M = 3 1 (sideslope) CHANNEL DIMENSIONS DEPTH = 050 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y'D S Tractive Force (#/sq ft) Y =WEIGHT OF WATER (62 4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 03 (#/sq ft) Maximum Allowable Tractive Force L JUTE NET 045 (#/sq ft) 1 CURLED MAT 155 (#/sq ft) N PSRM 320 (#/sq ft) I CLASS B RIPRAP 350 (#/sq ft) N CLASS I RIPRAP 500 (#/sq ft) G CLASS II RIPRAP 750 (#/sq ft) Z ACTUAL 05 ft \ / (DEPTH) \ 0 ft (BOTTOM WIDTH) 421 Fayetteville Street Suite 400 Raleigh NC 27601 Tel 919 380 8750 Fax 919 380 8752 www stewart eng com S� STEWART CHANNEL DESIGN CALCULATIONS Swale from Sta 205 +97 TO 203 +58 Y2REV2 PROJECT Neuse River Trail 10 YEAR STORM DATE 2012 05 24 REVISED PERVIOUS AREA = 1 345 (Ac) PERVIOUS C = 0 255 IMPERVIOUS AREA 0 000 (Ac) IMPERVIOUS C = 0 950 TOTAL AREA = 1345 (AC) WEIGHTED C - 0 255 WIDTH = 0 (ft) Bottom Width SAX1 ONAWIM KH DN ITH�KE.GRE&c TOTAL FLOW = 472 (cfs) CHANNEL LINING N = 0 030 (Mannmgs n) SLOPE= 0 049 (ft/ft) Z REQUID= 043 M = 3 1 (sideslope) CHANNEL DIMENSIONS DEPTH = 060 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y•D S Tractive Force (#/sq ft) Y =WEIGHT OF WATER (62 4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (fttft) T = IS ( # /sq ft) Maximum Allowable Tractive Force L JUTE NET 045 ( # /sq ft) I CURLED MAT 155 ( # /sq ft) N PSRM 320 (#/sq ft) I CLASS B RIPRAP 350 ( # /sq ft) N CLASS I RIPRAP 500 ( # /sq ft) G CLASS II RIPRAP 750 (#/sq ft) Z ACTUAL (DEPTH) 06 ft \ / 0 ft (BOTTOM WIDTH) 421 Fayetteville Street Suite 400 Raleigh NC 27601 Tel 919 380 8750 Fax 919 380 8752 www stewart eng com