20010550 Ver 6_Application_20060216

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STATE OF NORTH CAROLINA
DEPART7VIEENT' OF TRANSPORTATION
MICHAEL F. EASLEY LYNDO TIPPETT
GOVERNOR SECRETARY
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February 16, 2006
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NCDENR- Division of Water Quality ~
Transportation Permitting Unit FEB ~ ~ 2006
2321 Crabtree Boulevard
Suite 250 pENR _ WATER Q~ ER g NCN
Raleigh, NC 27604 ,~~,NDS w~D sTUR~
ATTN: Mr. John Hennessy
Unit Supervisor
Dear Sir:
SUBJECT: Permit Modification Request for TIP No. R-2809C, Wake County, NC
DOT Division 5, Federal Aid No. STP-98(1), State Project No. 8.1402501,
USACE Action ID 199601836, and DWQ Project No. 010550, $475 Debit
Work Order WBS Element 34503.1.1 _".
On April 4, 2002 and February 4, 2002 respectively, the USACE 404 Individual Permit ~''
and the NCDWQ 401 Water Quality Certification and Neuse River Riparian Certification
were issued for project R-2809. On October 18, 2005 and September 30, 2005 '"
respectively, modifications to the USACE 404 Individual Permit and the NCDWQ 401 ,
Water Quality Certification and Neuse River Riparian Certification were last issued. The ~r'`,
~„
North Carolina Department of Transportation (NCDOT) proposes to modify the natural
stream design plan at Site 2 for the abovementioned project. The purpose of this letter is
to request a modification the 401 Water Quality Certification as well as the Buffer -
Certification from the NC Division of Water Quality. The location map of Site 2 and the `~
revised sheet of the design plan sheets are attached. , '~
Summary of Impact Changes
The proposed revisions to the natural stream design at Site 2 do not result in any impact
changes from the last permit modification. As shown on the attached plan sheet, the only
revision is changing the typical section of the channel from a 3 foot bankfull depth to a 2
foot bankfull depth. This change is based on field measurements upstream and
downstream and from review of regional bankfull curves. These curves were not
available at the time of the original design.
MAILING ADDRESS:
NC DEPARTMENT OF TRANSPORTATION
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS
1598 MAIL SERVICE CENTER
RALEIGH NC 27699-1598
TELEPHONE: [phone]
FAX: [phone]
WEBSITE: WWW.DOH.DOT.STATE.NC.US
LOCATION:
2728 CAPITAL BOULEVARD
PARKER LINCOLN BUILDING, SUITE 168
RALEIGH, NC 27699

The revised natural stream design does not compromise NCDOT's compliance with any
existing permit conditions.
Regulatory Approval
The NCDOT respectfully requests that the referenced 401 Water Quality Certification and
Neuse River Riparian Certification be modified to reflect the revisions outlined in this
letter. In compliance with Section 143-215.3D(e) of the NCAC we will provide $475 to
act as payment for processing the Section 401 permit application previously noted in this
application (see Subject line).
If you have any questions or need additional information, please contact LeiLani Paugh at
[phone].
Respectfully,
i Q ~~
Gregory J. Thorpe, Ph.D. ~`"''
Environmental Management Director, PDEA
w/ attachment
Ms Nicole Thomson, DWQ (7 copies)
Mr. Eric Alsmeyer, US Army Corps of Engineers Raleigh Field Office
Mr. Eddie Bunn, P.E., Division 4 Resident Engineer
Mr. Byron Moore, P.E., PDEA Natural Environment Unit
2

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BEGIN PROJECT
R-28098
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R-28096
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woke For~sr I N.C. DEPT. OF TRANSPORTATION
Rol~ivllls YItlAs
s`"' DIVISION OF HIGHWAYS
WAgE COUNTY
SCALE PROJECT: 8.102501 (R-2809B)
.5 0 1 KM NC 98 WAgE FOREST BYPASS
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IST. RIPARIAN
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2 rvST. RIPARIAN
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OFFSET TO FL
STA ID+60 -Y2- LT
DED ELEV=T4.46m
OfFSEi TO FLOODPLAIN ~ 45.6m
STA 10+50 -Y@- LT
BED ELEV=74.34m
OFFSET 10 FLOOOPLAIN ~ 45Jm
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Y "~ k ~ ID SPEC. LAT.'V' DITCH ~~
Y SPECIgL ~ SEE DETAIL F ~ r
NOTE: ~~'-~L,, ~, v ~ LAT.'v'DITCH~
w ~~ ~ ~ -Y2- PC 10+52.646 sEE DETAIL F -~ ~ T.
BEGIN & END STREAM ELEVATIONS SHOULD BE CHECKED PRIOR
TO CONSTRUCTION TO ENSURE PROPOSED STREAM GRADE (AND ELEVATIONS) ~ ~ ~ - ,' ~ ~ ~ ~ ` J , ~c
.nr .nn~,n..-rr r, r~~.r~n~~~ ~~x:. ~~~nv rnnu nn~nn ninvwr A /C ~
OFFSET i0 FLOODPLAIN ~ 44.Im
STA II+00 -Y2- LT ~~
BED ELEV=75.12m 3
OFFSET TO FLOODPLAIN ~ 45.2m j' P)
STA II+10 -Y2- LT NPD
CROSS BED ELEV=75.28m
VANE OFFSET TO FLOODPLAIN fL 47.4m
ROCK STA 11+20 -Y2- LT
WEIR BED ELEV=75.45m
(TYP,1 OFFSET TD FLOODPLAIN ~ 41.3m
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R-28098 2-I
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CONST.REV.7/20/04
NarES:
NUMBER DF RDOTwAOS INSTALLED TO BE DETERMINED ON SITE.
NUMBER DF CROSS VANES TO BE DETERMINED ON SITE.
PLANTINGS SHOULD BE PLACED ABOVE BANKFULL DEPTH.
CROSS vaNES TO BE PLACED IN BOTTOM ONE THIRD DF RUN
(SEE STREAM PLAN vIEW DETAIU
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spp ~ ~\~_~ ~ SILL F ' ~ o , , i,~ T OFF
~ ~ \ , \ ; / ; , / , , ~~ , ~ -Y2- PT U+30.723
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Fltrr tna-,•c aaxiq~n O.wm
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PLAN VIEW
IN N cwk N
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Cvutr7uv strge 711 °30• l
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CROSS VANE ROCK WEIR DETAILS
I I I I I I I I I I I I I I I I I I I I I I I I I_
10+40 +60 +80 l %20 +40 +60
SECTION B-B

(Mxpafn o0.ve weir Mqn K v°r wlig 0.9 m ~ - '
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r,~mm~ ~ w,.; . o
idenyvfmn 2p ml
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NOfe: Rxks srtwld (!r O'9nlly.
Trim f'Iter foDric f(u50 wBn !op of rwks. Nde Boulders slxwld ce rafive scone
WIEn drop 6eMee/r upstra~m (1051p1ain alyd v S1N rCCk.arkylar dM OD1Clq wlin
axis oyproxitmlety 030m in lenglM1
davnsJ~eam flrod p'oin exceeds 03m,o nuuWer
slllls ra:animended !n tle fleMplain.
CHANNEL DETAIL
PROPOSED TYPICAL RIFFLE 5ECT10N
I Nor to scale ~
BANKFULL DEPTN
0.6m
VAA VAR
Flood Ploln ~ * Flood PIaIn
v AR. 2 ,F_ vAR.
GG Y ~ 1`
F u~R P01~ 1dAtR
2.Om
r Excavate Overbank Floodpl0in to
Extent Practical to Mclntain Minimum
10' Berm from -Y2- Toe of F111
DET Al LS OF NATURAL STREAM DESIGN
FROM STA 10+46 -Y2- ~LT~ TO STA 1122 -Y2- ALT)
-L- POT 33+00.000
-Y2- POT 10+00.000
OFFSET TO FLDODPLAIN ~ A9.3m
.AIN ('L 94.Om
CHANNEL DETAIL
PROPOSED TYPICAL POOL SECTION
~ BEND (MEANDERI
I Not to Scale I
DEEPEN AREAu
BELOW GR0.DE POINT
BANkFOLL &pC~ O.ISm Ai BEND
Flood PIOIn DEPTH ~ Flootl Naln
0.6m
VAR. ~r ~) VAA.
1a
9'/ COIR
FIBER ~18ER
AIAT ~ T
EST. 7.2 4~TN
EST. 15 m2FF
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