20081255 Ver 1_More Info Received_20081001

WATER
Resources
City of Greensboro
September 26, 2008
08 - I a ?5
Mr. Ian McMillan
Administration DWQ 401 Unit
[phone] 2321 Crabtree Blvd
Fax [phone] Suite 250
Raleigh, NC 27604
Customer Service
[phone] Re: Upgrade of Existing 30-inches CMP to 40-feet long at East Woodlyn Way
Fax [phone] Greensboro, NC - Update
Dear Mr. Williams:
Water Supply
Mitchell Plant
[phone] The City of Greensboro would like to notify your office of the proposed Reinforced
Fax [phone] Concrete Culvert upgrade at East Woodlvn way (at 2 Forest Lake Circle). The project's
Townsend Plant objective is to upgrade the existing 30-inch reinforced concrete pipe (CMP) of 40 linear
[phone] feet long with a RCC of (2) 7-feet by 4-feet RCC of same 40 linear feet long and a 28-
Fax [phone] feet long energy dissipator (pool and apron). Presently there is an existing 40-inch pipe
that is undersized and needed to be upgraded to a larger size due to road flooding and
to reduce road accident during heavy rainfall.
Water Reclamation
North Buffalo Plant The length of the existing 30-inch pipe is 40 feet and to be replaced by a proposed 7-
[phone] feet b 4-feet RCC of same 40 feet in length with 28 feet energy dissipater 21 feet
Fax [phone] by 9Y (
dissipator pool and 7 feet apron with a flood bench).
T.Z. Osborne Plant
(33366) )
621- 62
Fax 1-3523 Attached is the general information (vicinity map, plan view, topography layout drawings
Fax (
and inventory map) regarding the subject site for your review.
Construction & Site: 2515 East Woodlvn Way by 2 Forest Lake Circle at Unnamed
Maintenance Tributary to Bull Run Creek along Hilltop Road, Greensboro, NC.
Service Center
[phone]
Fax [phone] Site Condition: Under sized Culvert with road flooding.
Meter Services If you have any further questions, please call me at [phone]
[phone]
Fax[phone]
Sincerely,
Water Conservation _
[phone]
Fax[phone]
Ce"dowu
Operations Management Supervisor 0 C T 1 2008
Stormwater City of Greensboro, Stormwater Management
Management OENR - WATER QUAIJTY
[phone] Attachment wET! A?vDS AND STfJRMWATER BRANCH
Fax[phone]
1505 P. O. Box 3136. Greensboro. NC 27402-3136 • www.d.greensboro.nc.us 9 TDD [phone]

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Stormwater Design Manual
CULVERT BRINK
III
3
41 SECTION
NOTE:. 2 < s < 4
-d6o -

rl?o IF >0.75
O

Y RIPRAP MAY BE RE UI
ON BANKS AND CH NN
BOTTOM DOWNSTR Ah
n FROM BASIN -SEE E:
9 EXAMPLE IN TEXT.
O

to oh
Q Vi
y

g /
.1.16
DESIGN DISCHARGE - Q
Vane ! WETTED AREA AT BRINK OF CULVERT
dr50 = THE MEDIAN SIZE OF ROCK
BY WEIGHT, ROUNDED ROCK
OR ANGULAR ROCK.
Ye - EQUIVALENT BRINK DEPTH
- BRINK DEPTH FOR BOX CULVERT
.(2A)1/2 FOR NON-RECTANGULAR
SECTIONS
o-
• o.
o ?/ h
' 1 2 3
V&M
FROUDE NUMBER (3Z2)IYe1
Figure 7-8 Relative Depth of Scour Hole Versus Froude Number at Brink of Culvert
with Relative Size of Riprap as a Third Variable
Source: USDOT, FHWA, HEC-14( 1983)
16
~_____~~.______.~_---_~T._._.~_~_~~___.~._-----~~ ~
-..,,M,. ~ ~ y t ti
~ \ ~i A,.
1 CONTRACTOR NOTES: CONTRACT SHEET
OF ~ ~
1~ k \ ` \ ~ ' i S ~ 1 Q' O ~ SEEDING AND MULCHING OR A SUITABLE GROUND COVER SHALL BE PROVIDED ON ALL
~ ~ ~ f ~ ~ r, ~ i ~ ~ ~~~i o. ~ ~ ~ DISTURBED AREAS WITHIN 15 WORKING DAYS OR 21 CALENDAR DAYS (WHICHEVER IS SENSITIVE INFORMATION i
I ~ ~O ~ ~ 4 SHORTER) FOLLOWING COMPELETION OF THE STORM SEWER INSTALLATION.
I ~ i \ blfi 1. ~ r
w~ ~ ~ s ~ ~ ~ THE STREET CUT SHALL BE REPAIRED TO COG STD. X423 Not to be copied or
ggnn ~ \ \
a~ \ distributed without the AT THE END OF EACH DAY THE CONTRACTOR SHALL INSTALL COG STD. #443 express written permission
'w n ~ i V M ,n ~ CONFIRM LOCATI0~1 OF EXISTING ti,_ _
_ ~ ~ SANITARY SEWER LATERAL PRIOR TO ~ TEMPORARY PIPE INLET PROTECTION IN THE TRENCH ABOVE THE LAST LAID PIPE JOINT. ~ of the City of Greensboro
I A \ ANY CHANNEL WORK ~
CONTRACTOR IS TO RELOCATE EXISTING 8" DIP WATERLINE AROUND THE PROPOSED
S ~ ~ ~ ~4 ~ ~ ~ CULVERT. MAINTAIN 7.5' BETWEEN END OF WINGWALL AND RELOCATED WATERLINE AND ~ ~
t ~ PROVIDE 3' MINIMUM COVER.
~ ~ THE PROPOSED HEADWALLS/ENDWALLS AND THE ASSOCIATED WING WALLS SHALL BE
~ \ V r ~ ` ~ cF I S ~ I ~ PROVIDED BY THE SAME MANUFACTURER AS THE RCP BOX CULVERT. ~
~ S ~ f
1; PRIOR TO ANY EXCAVATION, THE CONTRACTOR SHALL CONSTRUCT A TEMPORARY SILT ~
i 1 ~ ~ r i ~ ~ ~ ~ , ~ _ ~ ~s CHECK DAM PER COG STD. #433 BELOW THE WORK AREA AS SHOWN ON THE PLANS. i-e~ '
i t
~ t , ~ ~ ~ ~ THE CONTRACTOR SHALL INSTALL A COFFER DAM ABOVE THE WORK ZONE TO TRAP THE c~tyot r~ur~i
~ ~ o ~ LOW FLOW. THE CONTRACTOR SHALL PIPE THE LOW FLOW AROUND THE WORK ZONE OR ~
~ g ~ t f = a a •r e USE AN ADEQUATELY SIZED PUMP TO HANDLE THE LOW FLOW AROUND THE WORK ZONE. coG water 73-2033
~ ~ . ~ a _ _ _ GDOT Tref 73-2608
~ ~ . ~ 2 o~ wn~ z ~ IF THE SITE HAS TO BE DEWATERED, THE CONTRACTOR SHALL PUMP THE WATER coGlGuilf 73-2oea
~ ~ r u_. J r ~ ~ c ~ s,.F , f l r ~ THROUGH AN ADEQUATELY SIZED STILLING BASIN OR THROUGH A SILT BAG. CDTanka rr 73-5855 ~
~r ' ~ 1 ~•l ~ u ~ j N I • ~ GDDT S 73-2569
; ~ ` . , 1, ; ) a I ~ E ~ a , THE CONTRACTOR IS TO OBTAIN A PERMIT FROM GDOT TO CLOSE THE ROAD IN ORDER
~ _ y BA(tKFI~L BENC[a ~ T . i ~ ~
t' ~ s SEE'`~TAIL~, ~ r I ~ S ` s TO INSTALL THE PROPOSED CULVERTS. CONTACT CHRIS SPENCER AT [phone] ~ P ~ ES ~
. - 1 ' t \ N t _ Q ~
r l ~ ~x' z fi r 4 ,.x' i 't i ~ . 'n.. THE EXISTING 36" CMP CULVERT IS TO BE REMOVED AND PROPERLY DISPOSED OF PRIOR General PerC•1`~I~
. n s , 1 s 'M. ~ r. z ' ; S r t ~ ~ ` TO CONSTRUCTION. THIS SHALL BE CONSIDERED INCIDENTAL TO THE TRENCHING FOR
1 W ~ ~ ~ j T ,U I THE CULVERT INSTALLATION. Ap p ~ I eS
! t ~ a ' ~ , ~ TEi~PCRARY CHECK AM ' ~
K ` s , ~ c~ << ~71NG 6' CONTRACTOR IS TO COORDINATE WITH BELLSOUTH FOR THE RELOCATION OF THE
~ ~ ~ ~ ,_ro_ TYPE A - ~C~ STD. # 33 ; CHAiNLI~1K FENCE , r i ~ ~ ~ PR~ t _I~1K FENCE TELEPHONE LINE AND FIBER OPTIC CABLE PROIR TO CONSTRUCTION. INCLUDE KEITH
~ ,u~~ _ t i 1 ~ LOVINGS (373-2855) WITH ENGINEERING IN THIS COORDINATION EFFORT. DISTURBED AREA
~~~R?' CAI U) ~ SAVE ; XX.XX Acres
~ ~ ~ ' . ` ROP ~ r ~ T~dP. CONST. ESMT. FRI '`EXISTING ~ JST. ESMT. FROM
~ ~ T ~ SOX ~ X , EXI TING FENCE T~`R.O. ~ FREE c~ Rte., 1 ~ i "ENCE TC'R.O.W. j
~~r ~ ~ . ~ ~ , E ~ I
~ ~e ~ GIS DfSCL.AIMER
~ ~ ~ t. , BANKF~LL BENCF~: _L BENCFa ~
~ 4 .$30 ~ ~ SEE D',ETAIL i ~ i TAIL Objects an this map shaven with a dotted
5 t linestyla were not surveyed, they were
l eampiled by photagrammetric methods
` j I PROPOSES CROSS ~ ~ 1 F RIP RAP BASIN j ~ } . :~,~CROSS VA'~lE available on the Geagraphic 4nformatian
s _ ~ , ! J ,r ~ SEE DETAIL`~SHEET SEE DE1AlL SHEET ~ v, J , ~ ~ ~ 1 AIL`~SHEET System (G1S) saftware used by the City of Greensboro.
f ~ ~ t t
i i ~ ~ I } ~ i r f ~ PROFILE SCALES: ~
~ ~ ~ , ~ n ' f r ~ ~ •w. t
~ ..u... RELOCATE EXISTING 8 WATERLINE..........,. t 1"=20'H f
i ~ ~°:,~o ~ ~ ~ ~ _ AROUND PRO~}SED CULVERTS - / 1„_2,~
~ SEE CON ~ CTOR NOTES ~ ~
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I _ _ _ - -PRELIMINARY DESIGN
{ _ I ® DO NOT USE FOR _ - - _m_ ~ _ • CONSTRUCTION
820 _
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a. Wes. ....s _
I - ~ I 41.~
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I a _ OCT ~ 20~1~ ~
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j REVISIONS TYPE CONTRACT CONTRACTOR AS-BUILT AUTH. DATE BE[ DATE BENCH MARKS JOB NO. P -4544 CITY OF GREENSBORO K_
ROADWAY DESIGNED 10.12/07 BY JAH ENGINEERING DIVISION
i - I SEWER CONST. SURVEY BY EAST WOODLYN WAY CULVERT UPGRADE SHEET NO.
i
WATER I CHECKED BY CEO Approximately 1,150' South of Hilltop Road 1 OF 2
SIDEWALK

____~-T____
I
( CONTRACT SHEET
CONSTRUC- )NSTRUCTION SEQUENCE: ~ of ~
i
1. INSTALI INSTALL TEMPORARY CHECK DAM - TYPE A PER COG STD #433 DOWNSTREAM OF
CONSTF CONSTRUCTION AREA SENSITIVE INFORMATION ~
2. INSTAL INSTALL A COFFER DAM ABOVE THE WORK ZONE TO TRAP THE LOW FLOW. THE Not to be copied or
CONTRA CONTRACTOR SHALL PIPE THE LOW FLOW AROUND THE WORK ZONE OR USE AN distributed without the
ADEQU~ ADEQUATELY SIZED PUMP TO HANDLE THE LOW FLOW AROUND THE WORK ZONE. express written permission
SEE DE i SEE DETAIL SHEET of the City of Greensboro
E
~ 3. REMOV REMOVE THE EXISTING 36" CMP CULVERT L1~'
l o I
oo in es
4. INSTAL INSTALL THE RCP BOX CULVERTS PER THE PLAN '
f
I I ~ I I ' i , ,-I-i I ~ ' S. INSTAL + INSTALL THE PLUNGE POOL AND BANKFULL BENCHES PER THE DETAIL BELOW !
I ~ i i~ i~ ( 1 1 i ! i i j I ~ ~ ~ ( ~ Z I I 6 ~ ;I ~ I Ill li ~ ~ ~ ~ I+ r ~ i i C i t l a~ l 1 1 1 I I
I I ! fl !I Ili j{ I 4 (_...w...._. ~ . hM--
i # T ~ , ~ ~ i t i i i j~ ~ I 6. REMOV ( ~ ~ I 9 ! I 1 REMOVE THE UPSTREAM COFFER DAM AND BYPASS PUMP SYSTEM ~r
~I j +I I+ I!i I! I I+( 1111 3 ! 4 I I ` f I ~ I 7 ~ 4 i t i t i I I { ( 11 ~ I° ( ~ + ~ f I j 1 o~
I ~ I i t ~ l I ~ I i t I ~ I ; ; + I ~ 1 7. ONCE ONCE THE SITE IS STABILIZED, REMOVE THE TEMPORARY CHECK DAM DOWNSTREAM e
I E i I I ' ! I I 1 j ~ j
~ ~ I l+ ,i~ tll ~l I illl i I € OF THE i I i I } ; ~ I ( 1 i i 1 f ~ l I d{, E ~ r E OF THE RIP RAP BASIN c~ water 73-2033 GOOT Traf 73-2606
I r i ~ i I + I i I ~ I t A ~ III a j I ~ { I } i i~ 1 t# ~ t 9 I ( ~ COG/Guilf 73-2084 I
I I I ~ I i~ E{ 11 t 1 { 1 E 1 t 1 I ~ l i I i I t i I C06 Wat r 73-5855 i Tanks r ~
i, I ! I i i i t t f~ C I 1 + ~ + i 1 ~ 1 E 1 - GOOT St 73-2569
I ~ I[ I ~ I I I I~ fi I ~ f I l ~ I + { I lil I ( I ,
I ~ I I I i i ~ i s ! j { I f i ~ 1 ~ i~~ ~ t ~ i t I C I i 11 i I E ~ ~X ~ I , j~ I ~ I
I I i I! j i IR ~P G4 ' R P + I E i! i + I I TIE BACK INTO EXISTING GROUND NPDES
' ! I ~ li ~I I I Il i ~ f Illl I + t l f s~ E i i I I I I ~ I 1 1 ~B X I BMX I I I + I i i t i - SAVE EXISTING TREE genera Permit i
~ ( E I P I . i I
i ' _d ~ ~ ~ E i ~ j I~~ + I I i i I ~ I j F r i i j 1 ~ I I! E~ l[ ( I ~ j , E j 2:, ~ Applies
I ~ I I , j l ~ + I E I I E i I ~ I t i! NI 1 ~ ~ s B TO EXISTING ~
i I -j I E i I I ~ ~ ~ ~ 1 1 3 i l j i I s ' ~ ! 7' X 4' ~~i~~~,
I I ~ E l I I l l i I ~ ? I 1 I E ~ E f RCP BOX
i i I ! + i ~ I I ~ ~ BA FL NHI I I I ; II ~jl~ ~ t ~ r E I, I ! ~ ~ ~ I i ~ ~ ,
1 i 1 I ' ! ~ j ( ' l i a i l ' E j j I, j i z:, DISTURBED AREA ~
t i I l~ ~ i I 0 I ! ( E ~ i ( ~ I I i ~ ~ E I t ~ l I ~ I i , ; I i + l l~ l i l I + I j}; I ! ~ l ~ f l ~ I 7 X 3 BANKFULL BENCH X X. X A C r e S
It li t ~€j I i II ,Ill I i ~ l! ~,_,y.__-. ~.p._. , ~ j ! ~ I l I I ' ~ I I f RCP BOX (HORIZONTAL) (
~ I I ~ ; rt i. i} I~ 1 I J I ~ i s ~ I i i i j + + ~ I i + ! t f t I ~ t 4 7 ~ I i i ~ j ~ ~~t ~
a 1 ' I I I I I 1 1 I j i t i f f I I[ I s t I ~ ` l I II 'Isl ~ !k i ~i i I I 2:1 TO EXISTING ~ ~ ~ ~ ~ ~ ~ A ~ ~ p
V L~l00 ,
I
"`4 Objects on this map shown with a dotted
PROFILE SCALES. linestyle were not surveyed, they were
i >f 9 PLAN VI ~ W compiled by photogrammetric methods available an the Geographic Information
1 = 10 H System (GIS) software used by the City
i of Greensboro.
1 2 V
21' 7'
I
' TX4' ~,x3' 4" SOIL I
I RCP BOX t RCP Box ~-COIR FABRIC ~ ~
i - ,rte 1 2 s~
2 CLASS
I i ° 12 RIP RAP ~8" CLASS B RIP RAP ~
i oo in as I
i t ~ I I , RIP
' I ~ l I + i j c I I i p{ I ~ s I I c i + ~ ¢ g ~ I { + ~ ~ ~ RIP RAP BASIN DETAIL BANKFULL BENCH DETAIL ~
# € I l ~ E i ~ ~ ~ i i I I I ~ i i ! 9 ¢ i ~ ( ! ~ ~ I s ~ I ~ , I I + ~i, I_~. I t ~ I I ~ I B E L BELOW 7' X 4' BARREL BELOW 7' X 3' BARREL
F !E I I i ~I ..h i y~^ ~ I i ( E I ~ 3 = j i 3 + )j ~ i I
i I I I t ~ I i I~ i S, 3 ! + I s I ~ + I I I +I ~ I. I I it j 3
II €+I ~ I ~ + i~ ;I I I I t i ._~._a,_..l I ~ 11 I _ I PROFILE VIEWS 1
~ ~ I l i ' I~ 1 1 ~ ~ ~ ~ I ~ j i ~ ; I j
I + 't [ + 3 ~ ~ 1 ' ; ~ I ~ I j I ~l I'( i~ R, I ~ ! 11 ~ I k I i l 1 1 ! l i' N.T.S. !
! f E j I i + l i i j I E I f ` ~ I t I I
i ~ 1 I I I 1 + I ~ 1 3 1 i i ~ ~ i yl I ' 1 ~1
j I I i ~ I l~ + i + ~ j i ; i i I + f 1
i ~ I ~ 1 1 I 3 1 I ! i I I I + ~ 1 1 1 ~ i 9 ~ i ~ ii I I f
I , I i l~ „ I I I ~ ~ ~ I I I Ii ~ 1 I ~ I 71X13 7 , I I ~ I, l
I ~ 1 , W ~
I ~ ~ ~ s ~ ~ I{ f I I j I EXISTING STREAM 60TTOM I , { I I I t E I I ;B(~X r l { ;
s. I I j I ~ I ' i i I I I 1 I~ 1; sr~r~ r~.ow ~t + o I i 1 1
i E , ~ E i 1 ( ~ I I `KFUL EC+JH I ~ ~I !~i z4~ `~r' p BANKFULL ease FLOW 24" „ - - ~ warER Level
B I~ ( j i i CLASS 2 RIP RAP QR ! i l ~ } ! x t I ~ ~ . i ~ 1 1 1 I , I I I j _ , / F I/ tt ~~f
I ~ I ! ( ABR I Cl ! i ~ I i ~ s olA~. eou~neRS I t+ i f ! I~ ~ i ~ l i I + ~ I 3 ~ erase ~.ow ~ .o ' 0.5 vA~aES , p `
~ E ~ ~ Ii I i~, _ I ~ I I ! € I I 1 , I t ~WA11:R'~VE~ i ~ I ( i I l j~ ~ 1 I l i
I + 9 + { I I b I I I ~ ~ ~ i ~ 1 l "~A`/i~ ~ ~ i
3 I 1 ~ ~ j t i ~ 1 ' I ( + f i i I I8~ I f I I I I I I ~ ~ r.. y
I I I i i i ~ t , I I ~ , C I[~ ~O~LI; I ~ ~ t I ' ~ I ~ I ~ l
~ I ~ I € i i + I i' I s+ I i I + E f_._ _J_.__ ~ ~ } i " ! \ ti.- ~ SCOUR HOLE B FORMS AFTER
+I II€ I Ii!1 II i I j 3 t IP A tB S N~ I ~ec~i®~ I I ~ ( I i, i I ~ I I 1 1 SC41AA? CONSTRUCTION FOOTER BOULDERS 1
I E E f E t I [ ~ i ! I ~ i E E~ AIL, i j~ I i ~
I i I _......dJ_.~:._.~ N_ ~ ___!.m._._1___~ ~.__.?_..E__~_._l._~.__,1.~_ a..._,w.,t..._.~..,.~~ . , . ~ .u1.___w,_._.___~_.~.~.,__.._l.. _..__t ~ SCOUR HOLE
1 W13 OR 5' MIN. ~ FORMS AFTER Tae of BLaPE n CONSTRUCTION
CROSS-SECTION OF PROPOSED
R1P RAP BASIN & BANKFULL BENCH PRELIMINARY DESIGN ~ a `~._J
RI SEE DETAIL TO GHT 3o«A a DO NOT USE FOR I
CONSTRUCTION
I W b ~
5 STREAM F20W
PROFILE SCALES: f7 9 ~ 2' (TOP}
1 = 10 H 4' - B' {BASE)
~ _ u F
i 1 - 2 V
TOE OF SLOPE INSTALL 24° - 48" DIAMETER BOULDERS
~ ~l ~ ~pQ~p 1
i h0
i f CROSS VANE DETAIL
E
I N.T.S.
f i i
i
REVISIONS TYPE CONTRACT CONTRACTOR AS-BUILT AUTH. DATE BE DATE BENCH MARKS JOB NO. P -4544 CITY OF GREENSBORO
i ROADWAY DESIGNED 10 12 07 BY JAH ENGINEERING DIVISION K
SEWER CONST. SURVEY BY EAST WOODLYN WAY CULVERT UPGRADE SHEET NO.
WATER i CHECKED BY CEO r~ of
SIDEWALK SCALE: 1" = 24' Approximately 1,150' South of Hilltop Road G