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HomeMy WebLinkAbout20051608 Ver 2_Stormwater Info_20060501?µ~~4 m,~ ~ .;,.. •~w,..~• STATE OF NORTH CAROLINA Mq y f °~' ~ .~ ,~ ,oFiv l)~~ ~'- i.. ~ ~SA~VI,t .S r~~,ieyyAiC:h, DEPAR'T1V~NT OF TRANSPORTATION ~"~" MICHAEL F. EASLEY LYNDO TIPPETT GOVERNOR SECRETARY Apri127, 2006 NC Department of Environment and Natural Resources Division of Water Quality-Stormwater Management 943 Washington Square Mall Washington, NC 27889 Attention: Mr. Bill Moore Subject: Stormwater Permit Request for the Replacement of Bridge No. 60 over the Trent River on US 70 Business; Craven County; TIP Project B-2532; Federal Aid Project No. BRSTP-070B(4); $420.00 Debit WBS 32649.1.1. The North Carolina Department of Transportation (NCDOT) proposes to replace Bridge No. 60 in Craven County, North Carolina. Craven County falls under the jurisdiction of the Coastal Area Management Act (CAMA). The NCDOT is applying for a CAMA Major Development Permit, a Clean Water Act (CWA) §404 Department of the Army Permit, a US Coast Guard Permit, and a North Carolina CWA §401 Water Quality Certification. A Stormwater application form and one copy of the project permit drawings are provided with this request. Please review this project for authorization by your division. Thank you for your assistance with this important matter. Any assistance you can provide in expediting the review of this project is greatly appreciated. If you have any questions concerning this project, please feel free to contact Mr. Chris Underwood at (919) 715-1451. Sincerely, ~`f ~ ~' Gregory J. horpe, Ph.D., Environmental Management Director ~,;` Project Development and Environmental Analysis Branch CC: Dr. David Chang, P.E., Hydraulics Mr. William Wescott, USACE Mr. Brian Wrenn, NCDWQ Mr. Steve Sollod, DCM Mr. Vince Rhea, PE, NCDOT MAILING ADDRESS: NC DEPARTMENT OF TRANSPORTATION PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS 1548 MAIL SERVICE CENTER RALEIGH NC 27699-154$ TELEPHONE: 919-733-3141 FAX: 919-733-9794 WEBSITE: WWW.NCDOTORG LOCATION: TRANSPORTATION BUILDING 1 SOUTH WILMINGTON STREET RALEIGH NC OFFICE USE ONLY Date Received Fee Paid Permit Number .... r., ~... ~........ ~•• f State of North Carolina RECEIVED Department of Environment and Natural Resources Division of Water Quality APR $0 2006 STORMWATER MANAGEMENT PERMIT APPLICATION FORM c~ .~~ NORTH CAROLINA DEPARTMENT OF TRANSPORTATION /~~~ LINEAR ROADWAY PROJECT This form may be photocopied for use as an original. DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes this application form, a supplement form for each BMP proposed (see Section V), design calculations, and plans and specifications showing all road and BMP details. L .PROJECT INFORMATION NCDOT Project Number: 32649.1.1 (B-2532) County: Craven Project Name: Bridge No. 60 over Trent River on US 70 Bus. Project Location: Business US 70 Between US 70/17 and Front Street in Downtown New Bern Contact Person: Phone: Fax: Receiving Stream Name: Trent River/ Neuse River River Basin: N Proposed linear feet of project: 2750 feet Proposed Structural BMP and Road Station (attach a list of station and BMP type if more room is needed): Level spreader left of station 15+00 adjacent to the BridgePoint Hotel Type of proposed project: (check all that apply): ^ New ^Widening ^2 lane* ^4 lane* ®Curb and Gutter OBridge Replacement Other (Describe) 570' of side walk will be added behind new curb and gutter along the SW end of proiect *2 lane and 4 lane imply that roadside ditches are used unless Curb and Gutter is also checked. II. REQUIItED ITEMS CHECKLIST Initial in the space provided below to indicate the following design requirements have been met and supporting documentation is attached. Supporting documentation shall, at a minimum, consist of a brief narrative description including (1) the scope of the project, (2) how the items below are met, (3) how the proposed best management practices minimize water quality impacts, and (4) any significant constraints and/or justification for not meeting a, b, c and d to the maximum extent practicable. Designer's Initials `=~,~1 a. The amount of impervious surface has been minimized as much as possible. ~e~, b. The runoff from the impervious areas has been diverted away from surface waters as much as possible. S~M c. Best Management Practices are employed which minimize water quality impacts. S ~°!it d. Vegetated roadside ditches are 3:1 slope or flatter. Class: NSW, SB, Sw Form SWU-112 Rev 04.00 Page 1 of 2 III.' OPERATION AND MAINTENANCE AGREEMENT I acknowledge and agre ~ my initials below that the North Carolina Department of Transportation is responsible for the implementation of the~enrmaintenance items listed. I agree to notify DWQ of any operational problems with the BMP's that would impact water quality or prior to making any changes to the system or responsible party. Maintenance Engineer's Initials ~fv~ a. BMP's shall be inspected and maintained in good working order. 3,.,~/~ b. Eroded areas shall be repaired and reseeded as needed. ~~~ c. Stormwater collection systems, including piping, inlets, and outlets, shall be maintained to insure proper functioning. Maintenance Engineer's Name: So ~ r W. I~aus~ J r. ~ , f? ~. Title: D,'v;s~or• a ~ , rnu.`„ le„un c Er+ one e f IV. APPLICATION CERTIFICATION I, (print or type name) 1 ~ ~ ~ ` (~ ~ • ~-c.~ti +~~ s -~ of ~~~ Branch, certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans and that the proposed project complies with the requirements of 15A NCAC 2H .1000. Address i h(,C lh ~~.v~ L Date: d~~~f!~~ Signature: V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Form SWU-103 Form SWU-104 Form SWU-105 Form SWU-106 Form SWU-107 Form SWU-108 Form SWU-109 Form SWU-110 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off-Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement Innovative Best Management Practice Supplement Extended Dry Detention Basin Supplement Form SWU-112 Rev 04.00 Page 2 of 2 NCDOT Project 32649.1.1 (B-2532) Date: Mar. 1, 2006 Craven County Bridge No. 60 on US 70 Bus. over the Trent River Hydraulics Project Manager: Andrew Nottingham, PE STORMWATER MANAGEMENT PLAN PROJECT DESCRIPTION The NC Department of Transportation proposes to replace bridge no. 60 with a bridge. US 70 Business in the vicinity of the project is an urban local route that connects historic New Bern at the northern terminus of the project to James City at the southern terminus of the project. The existing roadway cross section varies from two lanes with an overall width of 36' across the bridge to 72' at the southern terminus where it intersects with US 70 Bypass. The existing structure consists of multiple 35' approach spans north and south of a 220' main swing span. The overall bridge length is 1760'. The proposed structure will have multiple spans north and south of a 166' bascule span. The overall bridge length will be 1762'. Bridge deck drainage is accomplished with deck drains on both the existing bridge and the proposed bridge. Proposed deck drains will be eliminated from the first 3 spans of the bridge (282'), except directly above the rip rap slope protection at the southern abutment. Similarly, deck drains will be eliminated from the last four spans of the bridge (285') except directly above the rip rap slope protection at the northern abutment. The existing concrete and timber bulkheads will be retained on either end of the bridge. The relatively flat area between the bulkhead and the bridge abutment will be amended with rip rap to provide scour protection. This area will also act as an infiltration area for the deck drains mentioned above. The existing bridge has two 3' sidewalks on either side of the bridge. The new bridge will have just one 5'6" sidewalk along the western side of the bridge. 300' of existing sidewalk will be removed along the roadway at the northeast end of the bridge. A 570' sidewalk with curb and gutter will be added along the western side of the roadway from a drive at the southern project terminus to the beginning of the bridge. The difference in the sidewalk improvements will add approximately 1350 square feet (0.031acre) of impervious area within the project limits. Traffic will be detoured off-site during the bridge construction. ENVIRONMENTAL DESCRIPTION The surrounding land use consists of residential, commercial, and industrial uses. The project area is located in the Neuse River Basin at the confluence of the Trent River with the Neuse River. The surrounding terrain is generally flat to very flat. The natural ground elevation at the site is approximately 4' NGVD. -The water depth at the site is approximately 14' in the channel. The best usage classification is NSW, SB, Sw. No watershed critical areas, HQW, or ORW waters are located within one mile of the project site. NCDOT Project 32649.1.1 (B-2532) Date: Mar. 1, 2006 Craven County Bridge No. 60 on US 70 Bus. over the Trent River Hydraulics Project Manager: Andrew Nottingham, PE BEST MANAGEMENT PRACTICES • The bridge replacement will be accomplished with a road closure that will minimize construction time and on-site impacts. • The roadway typical section is a fill section with slopes no steeper than 3:1. • The added curb and sidewalk section will use a level spreader device for additional treatment. • Proposed deck drains will be eliminated from the first 3 spans of the bridge (282'), except directly above the rip rap slope protection at the southern abutment. Similarly, deck drains will be eliminated from the last four spans of the bridge (285') except directly above the rip rap slope protection at the northern abutment. • Discharge from the deck drains will be allowed to infiltrate the natural ground behind the existing bulkheads. • Placement of rip rap beneath both bridge ends between the bulkhead and the bridge abutment will control erosion from deck drains and storm event scour. • To avoid impacts to SAV's, bridge construction in shallow water will be limited to a work bridge. ~3~SSSYSTIME~ffi$~S ~SUSERNAMEffi$Sffi C411tTRACT: o 0 (Ji 7o O N N N fT O 'n O m o O m = v S n ? 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W nm, m ?No ZXA m 7~= x ~ma ~ o op m~ _or '~ v m ~ z roca a rn~ om'D ~ BOA n ° rn N ~ o 2 ~ Z ~ H y N ^ o Ly r m 0 O>> ~ w Lpo ~ ~- s~ sz z< ~ ~= ,'3', N ~ ~Z ~r ~ ~ ~ ~ z o 0 ~ a t~1 e 'Sy 8r m~ ~r ~ ~ z~ z~ ~~ N la z 0 SSSSSSSSBSS z rn c ® ~ 1 I ~ i ~ ~ z ~ ~ rn m 0 Qo 0 !~" C N~N~J 1N3~J1 30+00 D ~ q ~3NWdN~ a3ARl ~ 3a1 _ - rnm4 031'd~1030 r ~,-~ r ~ ~ ~ y ti ~ n z ' v' + ° i ti n A z _ ~ ~ r~ ~ ~ N O +~ rn _-.. z C MATCH L/NE STA.28+00 SEE BELOW 28' //' a~ ~ r r i C ~~~~ ~ ~ ~ O ZOOyI~ 0~~~ ~Z O ~~ ~ ~ y rn0 rn rn ~ O ~ ti C ~ 20+00 n Z Z ti rn z I 0 m ~ ~ Z ~ ~ z ~~_ ~W ~ m ~ . ao mZ ~I ZXA 25 +00 ~ 1 JA dND l A:U ~J~/ll ~ 1N~N1 ~ v d~ Z NCD V- omv °o~ N O N ^ N VI O 5 n Z N N O n rn 0 0 gb Sz ?'< b 0 ~ zr ~p Flo ~ cn ~ z ~~ ~ Z Z o a~ .r~ ° ro 9 ~r ~a =~ zy ~~ ~~ ~ ~ Z 0 MATCH L/NE STA. 28+00 SEE ABOVE 63S BS SSB SS B SBB SDGNSBBS8B8S38S86868 6/2 l/00 y O }~ 5 C C m ~ ZG1fCOZ O C-1 1 ' II FFni ~ II oyioO~ O~ ~° n ~~ ~ ~ o z p~ ~ .. 8 .. 8 r m ~ ~ m U °~ ~ n ~~ ~ ~ > ~ o ~ ~ w ~.. I `~ r (1 4 O o ~ czi~~6i ~ N 8 ~ 8 O Z' ~ O ~'1~ 3 O a ~ `3 - LOGTION RT,RT, OR CLJ =~ =• y y LOG710N LT,RT, OR C ~ U O ~ ~ O -{ O ~ t O >> YYY ~ > T n E m > ~ FROM ~+ -' FROM STRUCTURE NO ~ ° + u ~ v ~ m ;; AO O~ TO STRUCTURE NO. $ "' TO . o $ $ T O ~ ; * ~1 S ~ " Yd ~ + N Z O ~ 0 ~ ~;~m~ yy m j ~ ~ v ~ N '1 sUZmip TOP ELEVATION a ~ TOP ELEVATION O O > > _ o ~ n _ r 8 T 7°z_~ z o ~ O Z 8 ~ ~ c 0 0 O INVERT ELEVATION " 6s ' i+ NVERT ELEVATION ,~ ~ .. ~TZi y 0 O Z J LL c r_ v] ® m ® SS ~ ° O '~ O ~ S7s~ ,~ p~° O ~ C INVERT ELEVATION '.wl }~ ~ INVERT ELEYATION N ' $ ~ z p z cl~r ~ ~ sLOPE canto , O y O ~° O Y.: SLOPE CRInCAL G C p 0 g Z N mm yy W m ~, g m N tv~ Z 6 O ~O a ~^ nC Z F- i • a ~ u 2 Z A ~ i C'1 C r~ ~' gg k 8 ~ ~ O ~ ~ ~ ~ a ~ ~ 9 ,~ O s ~ ~ o ~ = ~ ~ O °' O ~ O ~~ ~ ~ ~ m o• O' n ~F yl a ~ '-1N' w ~ g ~ 2 a y ~ ` o A G a ~{ ~ N N N p IV ®~ .109 +~ 8 ,°., ~ x .138 .064 > .168 ~ ~ ,064 u O (y D > .138 ~ 5 i OZ .064 ~ (//~"'~~ n _ ~ .168 O ° ~ ~ '~' .061 N 138 ± . ~ g : ~ y a .168 ~ n ~ .079 N z n w ° Z .138 P ' ~ ~~ $ O .168 ~ ~ .079 O N ~~±7 1 .138 rr __ vJ °•' '~ 7 m A o .168 ~ y .109 • N ~~ O o P ; ~ ; N m u +] 109 . o ~g Ei ~ ~ 15" SIDE DRAIN PIPE ~ ~ v A N ~ 18' SIDE DAMN PIPE ~" F " 4J o ~ . , J ~ d o Op O T c " ' s is ~ ~ ~ 21' SIDE DRAIN PIPE ~y v " ~ M ~' \_, ~ r~ ~ ~y V R.C.P. c g ~ d ~ i . y !7M Y ICI ~~ O o '~ ~ GS P a L" ~~~"~g ~ ~ . . ~ GUANTRIE S ~ z ~ ~ u ~ PER EACH (D'THRU 5.0') E F ~~ Z ° o ~ f~ v 5.0' THRU 10.0' > - p STRUCTURES • TOTAL LF. 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