20020831 Ver 2_Stormwater Site Plans_20071205

f r EROSION CONTROL NOTES
i f ~ J f , { (1) CONTRACTpR SHALL CONSTRUCT DIVERSION DITCHES AS NECESSARY TO (14} ALL CATCH SASlN HOODS SHALL BE STA ENSURE ALL SEDIMENT IS DIRECTED 1NT0 EROSION CONTROL MEASURES. W1TH 3/4" HIGH LETTERING. BE STAMPED "DRAINS TO RIVER"
PIPE WITH L BE STABILIZED WITHIN 15 DAYS OF
, i SHEET 9. (2~ N07ED OTHERWISE. SHALL BE PROTECTED PER TOC STD. 04000.14 UNLESS ~15~Aj}~jE COMPl.ET10N OFLANY~P ASE OF GR H AS DRAINAGE OF GRADING.
r 1 PROJECT SHALL BE KEEP CLEAN AT
, ~ ~ 1 ~ 1 l fI I .D TO RUN C3> TON EGNNNG CONSIRUC110NOLOCAliONFOF EXISTi GNUTIL111E5ESH~WNR (16} ALL ~ ~S ORAAJWASH S A ON WILLJBE IS BASED ON BEST AVAILABLE INFORMATION BUT CAN BE CONSIQERED WILL BE REQUIRED.
1 , I 4ti • ~ i • ONLY AS APPROXIMATE. (17) ?NE PROJECT MEETS ALL REQUfREMENTS EMENTS RELATIVE TO BEST MANAGEMENT
1 / f r PRACTICES AND ENGINEERED STORMWAT (4} DENUDED AREA = 9.8 ACRES OUitiNED 1N THE TOWN OF CARY LAND CHAPTER 7, PART 3.7. ?RMWATER CONTROL STRUCTURES AS
• , II ~ J LAND DEVELOPMENT ORDINANCE
• ~ ~ ti ~ ~ n I ' i { ~ i (5) TOPOGRAPHIC INFORMATION FROM SURVEY BY WITHERS & RAVENEL. (18} WETLANDS DELJNEATED BY SOIL & ENVIR {6} CONTRACTdR SHALL ENSURE GRADING OPERA7101V IS CONDUCTED IN A (19) OELlfJEATED WETLAND AREAS SHALL NOT & ENVIRONMENTAL CONSULTANTS.
I~ v 1 i • ~ E 1 1 f
1 y ~ MANNER THAT DOES N07 ALLOW ANY SEDIMENT INTO CREEKS. QT}~{~RiMSE DISTURBED UNLESS SPECIFI U.5. ARMY CORPS OF ENGINEERS AND N (7) AU. STORM DRAINAGE PIPE SHALL BE PROTECTED DURING CONSTRUCTION ALL NOT BE CLEARED, DRAINED, OR SPECIFICALLY PERMITTED BY THE
r __...,r,~,,,,,, i (i•~i ! 1 l ~ r ' 3 AND NCDENR.
1 r i ~ ; IN ACCORDANCE WITH TOC STD. DETAIL Q4000.i2. (20) RISER STRUCTURES MSUST BE ON SITE P OF A GRADING PERMIT. I SITE PRIOR TO ISSUANCE
1 `r., I
z L 1 ~ 'w M j r i r ~ ~ ~ d~ (8) CdN7RACTOR SHALL PROVtOE RIP RAP LINED TAIL DITCHS AT THE STORM DRAINAGE PIPE DISCHARGE POINTS AS REQUIRED TO ENSURE POSITIVE (21) CUT AND FILL SLOPES THAT ARE (2:1) DRAINAGE. Vti1TH PERMANENT SLOPE RETEN110N DEV OF PLANl1NGS AND RE'i'ENTtON DEVICES. (2:1) OR GREATER SHALL BE STABILIZED
,l ~ ~ ~ ~ ~ ~ ~ r` j r ION DEVICES OR A SUITABLE COMBINATION
~ N ! ~ r ~ / J ~ f l 1 i (9) SEDIMENT BASINS SHALL BE KEEP OUT 4F WETLAND AREAS. TO ONE (3:1) SHALL NOT BE S7AB~LiZE ?EV1CES. SLOPES GREATER THAN THREE ;TABILIZED WITH TURF GRASS BUT MUST BE
.f' 1 r ~ (10) A PREGONSTRUCTION MEETING MAY BE REQUIRED FOR THIS CpNSTiZUCT10N. 5TASILIZED WITH VEGETAi70N THAT REQ WEEPING LOVE GRASS, RED FESCUE OR (11) PERMANENT GROUND COVER SHAl1. BE ESTABLISHED EITHER IN 15 WORKING (CHAPTER 7, PART 2, SEC?lON 4, (G} L DAYS OR 9d CALENDAR DAYS, WH{CHEVER IS SHORTER, PER TOWN OF CARY (22~ EACH LdT IS TO BE CLEAREQ INDIVIDUA! IAT REQUIRES MINIMAL MAINTENANCE.
~ ~ ~ J ~UE OR OTHER APPROVED VARIETY. 4., (G) LDO).
~ ~v az,~ ~ ~ i
Q \ ~ a e , ~ ` \ r I J i r, r,. REQUIREMENTS, AFTER CONSTRUCTIdN IS COMPLETE. SIMULTANEOUS4.Y ANR THE COMBINED D (12) TOPSOIL SHALL BE WASTED OFFSITE OR !N FlLL AREAS AS SHOWN. AN EROSION CONTROL PLAN 1MLL HAVE IDIVIDUALLY. IF MULTIPLE LOTS ARE CLEARED 3INED DENUDED AREA IS OVER 12,000 SO FT
~ 1 ~ ~ C} - , ~ ~ a L HAVE TO BE SUBMITTED BEFORE THIS CLEARING
. ~ ~ ~ ~ ~ ~ r t I l ~ ~ ( • ~ 1 iii BEGINS UNi~SS INCLUDED AS PART OF aRT OF THESE PLANS.
\ ` ~ \ ~ ti C~ + r , i` (13) oEESSUANCE~OF A GRAD NG PERMIT. 'FENCING S ALL NOT BE EQUIR D (23) CQNTRACTOR SHAf1 VERIFY APPLICABLE 'LICABLE USACOE AND NCDENR-DWQ PERMITS 3ANCE OF THESE AREAS.
~ ,y ..cam.,. r• ~.r. '--~f~„_ 1 ADJACENT TO AREAS WITHQUT WOQDED VEGETATION. ARE fN HAND PRIOR TO DISTURBANCE y % ~1- j (24) LEVEL SPREADERS MUST HAVE ACCESS i' ARQUND THEM, AND INCLUDE AN OPERA ~ ~j--~~ ~ AND MAINTENANCE AGREEMENT.
D C7tn I .a ~ D ~ ~ „ 1 ~ ~ .r^ ~ \ ' _ ~ w}!Y. ~ r ~ \ ~ ~ y ~ - ~ ors +ws~rwr ~ ° . I i 4CCESS AND MAINTENANCE EASEMENTS OPERATIONS AND MAINTENANCE MANUAL
~L ,l ~ J ~ 'U LJ ~ ! ~ r ~ ti ti ~
" t ^ ~ (25) STREAM BUFFERS SHALL BE PROTECTED 7TECTED WITH TREE FENCING.
~ ~ ~ _ ~ ~ - i / ( (26) MAXIMUM IMPERVIOUS AREA ON ALL LO /l~J ALL LOTS SHALL BE 4x000 SF.
~ ` I ~~1 ~1111~1 _ wM~i-....mow; ~y ~ ~ .+~~C,~J L < ~ ` „'i ~ / ~ j'~ aUlr~ FYI W....., ~ • '~f-+~. ~ ~ r. i v ~ r
0 . ~a~ _ ~ _ .yV \ J' r ~ 1 _ ~ ~ I `fir.' 1. f I ~ ~ b J ` (27) STORM WATER DISGHARGES INTO MIDDLE MIDDLE CREEK TRIBUTARY.
\ . V , a~~~ _ , T~~ ~ ~ ~ ~ ~1 (28} TOTAL ESTIMATED ON-SITE IMPER~ US/ ` \ ~ I :RVIOUS SURFACE: 4.89 AC. V
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{ ' FES 11 FES 10 0,72 0.52 0.7fi A.5 f 28 373.00 372,00 3.57% 1(1.13 18 11.E Ct.ASS N RCP ~ I~ I : r ;r RCP ,1 ~ ~ ~ - ~ - - ~ ~ a ~ ~ ~ ~ C.~
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FES 21 ' FES 20 1.59 1.11 0 74 9.6 ~ 67 376.OQ f 375.00 1.40°/n 15.E 24 9.,15 {~+.SS N RCA ~ ~ ~ i FES 16 ; FES 15 1.97 1. GGfi , 0.84 ~ 13.0 ~ 52 373.50 3 r 250 1,92% 17,2,6 2d 10.39 CLASS 111 RCC' R~': , ;1. ~ RCP ' ~ , 4 , BASIN SIN
< < ! ( I I F I FES G1 ;FES C~ (3.30 0.16 0.62 1.5 2d 355.25 ' 354.75 2.09°io 7.5i 15 f 7,91 ' CLASS N FRCP ~ ! i - R~ ~W^~. ~ + ~ i~ ~as~v DW'~NSIG~ v~~ v(~.UUIV~ cL~~~ vaun~ su~A~ su~~?r~
FES G3 f FES Cat I 0..39 ! 0.23 O.fi7 ~ 2.1 i - f 24 356.75 ~ 359.25 2,0!8°,0 8,45 15 7.91 CLASS N RCF". ~ # ~ A}~ QEPTH L RCP ' , / . ~ vu~~l Pam I~~II~a I~ ~
l ~ F i _ ° FES 41 F~ 4E3 ( 0.34 0.26 0.79 ~ ~ 2.2 31 373.CA f 372.50 i .61 9.4~Q 15 6.96 I CLASS N RC#' I ~ ~L A I~ C AC J ~ ~ 1 t RC#' E 1 ; f ~ ; ~ I ~3NF 3. ~ 4.9 I NSA ~ c nnav~~ s s ~/,~y ; , ~ /M/ ~}y~•~s~s ii +r~ r~y~ ~F 1 7 ^ryM, ' \ j i ~F! 5 I € GL,~Mf ~ I L Vi~JW 1! ,V~/V I 7
a FES 86 85<4 ? 2.33 ~ 1,18 ? 0.60 1.5 - ~ 111 370.50 _ :~69. ~5 1. Q1 18.34 24 7.53 ~ t~4Sr5 (V f~' ~ 1,,~ ~....y................ t ~f~ ~ ~ t E ~A ~ I~YA i f~A 1~ ~ ~ $,900 12 3,060 1,024 3,800
• ,3g 85A FES 85 i 11.5 37~ 27 x,15 369,00 0.56°~b 2(}.51 24 5.58 CLASS IV RCP ~ W t - `1 ~~~J RCP, i ~ ~ ! , FB ~ .2 2.3 4 a ! 40 l t~ 2 400 1 800 4 , I 2 2,160 6?3
`SEE SF£E1" 61=QR F~~P#i AND SNIfl~ P15EC~I~L LIATA 1; -t~ + 4 j ~ 't ~ l . ~ t ~'f~~: 1 C7~ FF~EBC~7 ~S PFt~U1D~D FCR EACH B~S~f~. B~S~f~.
DI~~IPATOR D t N ES ~ z. + ~ St.~ACE AR~..A 1~ BASED ~N 1500 ~~IC~~ ~R 101 } ~R 101'R~ I~ ~T~tll
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INLETI APRON OUTLET ; D. STREAM R1P RAP ~ RIP RAP SIZE PIPE DIA. OUTLET # , f LENGTH 1N1DTH ! WIDTH ;THICKNESS CLA5S d50 ! I DESIGN LEVEL SPR
(ENCHES~ (1=EET~ (f"EETj ! ~FEET~ ! (INCHES3 (iNCH~5} ~~r7 N ()ullt~ ~t~s~ I ~~7 ~ (l F} E3<~r~~n E~ Ic~,~.
FESn1U 18 ! 10 ~ I 6 ~ 22 1 13 FES~11 ~ 18 10 4 j ~ ~ 22 I 13 i
FE5*15 24 75 8 t 8 22 I 13 , ~ ~ ~ ~ i FES r.18 24 V ~ ~ 2., ~ t-FS fit) ().1:i 1() 3f~3 C ?d 000000000
FES~20 24 ~ 15 6 ~ ~ ~.2 I 1 ~ 13 ~*0
F ~5~21 24 15 6 ( 8 ! 22 I 13 i FFS~3Q 18 10 ~ 6 22 C f 13 SEAL °g
_.,,..~.......~....._.M..~.....,,~.~.w...,~.~.....:_. FES~31 1$ 10 4 ~ 8 j 22 ! 13
I F1wS~40 2~ 20 8 12 ~2 _ 1 ~ 13 F f ~ i ~ FES~~ 1$ 2~ 12 ~2 1 13 o 29482 0 left
8 12 ~ 22 1 13 FESm~Q 15 20 ~
FESn74 ~ 30 1~ 6 8 ..2 ! 13 FE5~3(~ 2~ 15 6 8 22 j 13 ~ .............1 ~ 000000°
FE5;~85 24 15 6 I 8 ' 22 ~ 1 13 t • ~
FESK86 24 1~ 6 ( 8 22 I 13 FEa#G2 ~ 15 1~ 4 6 22 ~ ( 13 rove a e ~o Oil l"11~1 a e 0 60 1 20
i FES#G4 15 4 i 6 22 I l 13 ~vtreiwnnriwn ~n~r, i~~~.f~il ~
ALL DISSIPATORS SHALL HAVE FABRIC UNDERLtNERS LI kC~FI iGGI Il ll~ VU lG SCALE: 1 60"
No. Revision Date B Designer Scale
A TOC 1st REVIEW COMMENTS 5 25 07 GAS W&R 1 "=60' ¦ Sheet No.
TOC 2nd REVIEW COMMENTS 7 i 2 07 GAS Drawn By Date THE Pj NAGE AND EROSION WIT H R ~ FZAVENI ¦
C TOC 3rd REVIEW COMMENTS 8 30 07 4'JOH GAS ? 1 07 PARK AT LANGSTON STORM DRAIN ~ CONT 0 R S
D UPDATED STREET NAMES 10 9 07 NJA Checked By Job No. TROL PLAN ENGINEERS I PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tei: 919-469-3330 fax: [phone] www.wi www.withersravenel.com
WDH 061601

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! f I !t 1 I 1 I ! I 1 1 , ! j I ! r f !1 t R / 1 I ~ J 1 ! I f l / ~ l ! / ~ r ~ f/ ~ i ! ! r r / . ,1 ; ~ ; ' ~ ~ THE LENGTH LENGTH OF THE RIPRAP APRON.
! r I ! 1!J ! l / 1 r I I( + t l l t 1 CJ j l I ! j I / { ! I ! 1 1 ! ! t l j ! I j / r r ~ ~ e ~ ~ ~ i ~ ~ ~ f ' : ~ i. a = MMES n ~ ' ; PLAN' VIEW uESS ~,Ata s" {t ~ , E TIMES THE MAAMUM STONE DIAMETER BUT NOT
! t ~ ! 1 I I I / ! ! 1 { I I t t ~ / ~ ~ I I ! 1 ! E I I I t 1 ! r / 1 r i ~ t f / ~ ! ! / J' f ~ / HAN B" (inches).
~ ( I ! i ~ 1 I ( r 1 ! ! r ~ t I I I I ! I 1 I / f I i 11 ! / ~ 1 ! I I ! / / ~ / f ~ ~ J f / 1 ~ „f / X ~ ~ I r f, < < ~ 3. tcNatr~Bn~s J 7HE MAXIMUM T r :LL-DEFINED CHANNEL EXTEND THE APRON UP THE BANKS TO AN ELEVATION OF B" (inches) ABOVE
1 4 t I I 11 I r ..r I I j ! I / r / ! J ( 11 I / 1 ! r I j i/ / ! I ~ / r ~ r 1 l ~ f ~ t , l r ! i ~ f L BANK, WHICHEVE j ~ 4. A FlLTER BLANK INSTALiED HETIM i i PIPE OGMUM TAILWATER DEPTH OR TO THE TOP OF THE WHICHEVER IS LESS.
I r It I 11 J I i 1 ( ! / I ~ r r ! ti l 1 I ~ ~ I~ f I I! II I / ! f f 1 ! f ~ ~ f~ / / r `
f ~ , II 1 I I r I I I I I 1 ! I r , t r I I I ~ I II 1 / ~ ~ ~ _ l 4 ~ ! / ~ r ~ f ~ f R BLANKET OR FILTER FABRIC SHOULD BE .ED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
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1 1 r 1 i ~ ! t f I I r l I ` 1 1 f ! ~ ~ ~ ~ ~ i ~ i S t ! j I ~ ~ I , / , SECTION 'A-A'
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! 7t y 1 I i t ti I 1 ( • I { ! 1 ! i ~ 11 ~ f 1 f ~ ~ ~ ~ ~ 1 t I r ,r j ~ I . 1 t DETAIL No.
1 } ! i t ~ 1 I i w 1 I 1 1 ~ o I I ~ ! , 1 ! / t c 1 1 { / r ~ 1 ~ I ~ l t ~ ~ I H ~ 1 A PIPE OUTLET TO Vt~ELL-DEFIlVED CHANNEL .NNEL 104000-21 SHM , OF 1
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~12" ABOVE TOP 0~ BOX
6" PRECAST CONCRETE LID LID
W/ MANHOLE COVER ACCESS CCESS
1" 0 EN~ALL~FOUR~SIDES PRECAST CONCRE ~ONCRETE BOX
WEIR CREST
ELEVATION: 5EE TABLE
NOTE: ~ 6" MIN.
PLACE 5TEM SUPPORTS
AT 3' FROM BASE n~~
n~.n
WEIR RISER WfThi 4'x4' CONCRETE WEIR RI5ER WlTM PERMANENT POOL FfRST INCH STQRM ORIFICE
M EL. 36$.0 WATER LEVEE DURING NORM SLAB TOP ELEVATION: SEE TABLE q q ~ GROUT EACH /TOP OF DAM EL. 373.0 EACH SIDE
WATER LEVEL. QURING STORM SI..AB TOP TOP OF DAM EL. ORIFICE OUTLET n._,._,,.~
_I _ - 1 d0 YR ELEV = 367.11 367.11 - 100 -.i~-~ -100 YR ELEV =372.12 SEE CHART FOR SIZE J T SEALED WITH ti„_,~n GASKET GAS WITH A-LOCK NEOPRENE
- -I 11-1 ~ = I I- I :T CAST IN MANHOLE WALL
(I=~ ~ ~ ~ PEAK FLOW ATTENUATION POOL = ~ ~ I-) ~ C- PEAK SLOW ATTENUATION POOL -I 6" NRS GATE ~~ALVE
-I I - _ - MINIMUM " I I,; ~I f I~ ~ I I I EARTH D ATTACH SKIMMER - ~ ~ ~ ~ JIMUM SLOPE 2.5 1 -III=~ ~ MfNIMUM SLOPE 2.5 t (tom '0-RING MINIMUM SLOPS 3 1 CLAS I~ ~ ~ EARTH DAM BOTTOM QRA(N QUTL 6" --RING' GASKETS GLASS III RCP
~IIMUM SLOPE 3 1 -~!j =III..,~~ ~ s -i I I-III- -
RTN DAM ~~i.-X11-~~~-~ _ I~~~ CUTLET PIPE
- -f ill.,-~Iil_ ~ ~ ~
-III- -_=I L I=I - - 1-~ AT7ACH SKIMMER a .r~~` ' ~ ~ DISSIPATOR PAD ~ I' • ..-I I I~I - - I I=~ ~ TO PONd DRAIN -i o ''a .
TO POND DRAIN i l,-l -III-~ I I-~ I ~-I ~ I-' ~ _ = ~ ~ DISSI FOR EC PHASE -I I ~ =I ~ I=~ C I-"-~ ~ I t (I~ W~ ANTI-FLOATATION DEVICE ~ ~ 1-~ (~+I' I-I FOR EC PHASE ~ ~-i -I I1=11 I-I 11,.,1 i I~ I = _ -1 W/ FABRIC LINER ~ ~ I-I L I ~ ~ ~ II"III DISSIPATOR PAQ a a • ~ ~ = GROUT ~.4 W/ FABRIC LINER 2v • ' ~ ~
ANTI-FLOATAT{QN aEVICE ' ~ ~ i-) [ I=I.~.~.--I I = . ` ~ p q I~I~f = (2,500 PS! C s: CONCRETE FOOTING
PSI CONCRETE MIN.)
' -1 I I-I I 1 =11 I--- ANTf-SEEP COLLAR ~ ~-III ~ j I~ ~ ~ - ~ _ ANTE-SEEP COLLAR -1 I I-L I i- ~ i 1-1 I 1=1
88 LF 30" RCP QUTE.ET PIPE ~ 0.6% 76 LF 24" RCP OUTLET PIPE @ 0.6~ -"-~i!"~!~,~,~!~,~ RISER 8c DRAW DOWN QEVICE DETAIL N TS AIL I TS
CROSS SECT{ON cRass sECT~oN
6.4 ZIP
G ~
DIMENSIONS ELEV. DIMENSIONS ELEV. 4" DIA. MJ PLUG
NORMAL POOL N A 365.0 NORMAL POQL N/A 37Q.5 O W/ ORIFfCE. OR
TQP OF DAM WIDTH 1 Q ft 368.0 ANTI-SEEP COLLAR 72" x 72" Tt3P OF dAM WIDTH 10 ft 372.fl ANTI-SEEP COLLAR 72" x 72" APPROVED EQUAL NOTE: SKIMMERS SHALL BE USED ON PONDS DU )S [CURING y
STORM ORIFICE iNV OUT 2" DIA 365.0 STaRM ORi~'ICE 1" DIA 37'0.5 ,CT
TOP OF ANT]-FLOATATIpN 8' x x 2' 361.0 TOP OF ANTE-FL0,4TATION 6' x 6' x 2' 368.0 S E C TI O N A A EROSION CONTROL PHASE 4F PR03ECT N TS
Rl5ER CRE5T 5'x5' RGB 366.5 RfSER CREST 4'x4' RCB 371.7 I **Oslo 1119 0
OUTLET PfPE INVERT FN 30" RCP 356.0 OUTLET PfPE INVERT QUT 30" RCP 355.5 QUTI~ET PIPE tNVERT' iN 24" RCP 369.0 OUTLET PIPE INVERT OUT 24" RCP 368.5 CARY PROJ # 07-SB APPRQVED 17-SB-005 v
B07TOM DRAIN 6" Gate Valve 362.25 BOTTOM DRAfN 6" Gate Vafve 369.25 w la "D d o SEAL ~ ~ 0 S
TOWN OF GARY GARY o i o n
o 29482 ° i
Approved by ~C Dat Planning ~ Dat D a t 09 % •
I~ *00 23*61
Engineering V5 Dat WITHER,S RAVEN Date
i
NO. Revision Date B Designer Scale Sheet No.
A 7nC 1st RE COMMENTS 5 25 07 GAS W&R 1 "=30' ¦ r N 6
T C 2nd REVIEW COMMENTS 7/12 07 q Drawn By Date THE C TIC 3rd V COMMENTS 7 H GAS 1 1 07 E PARK AT LANGS ON STORMWA ER MA kNAGEMENT BASIN PLAN ENGINEERS 1 PLANNERS I SURVEYOR 111 MacKenan Drive Cary, North Carolina 27511 kel: 919-4693340 fax: [phone] www.,
D UPDATED STREET NAMES 10/9/07 NJA Checked By Job No. Y0 RS
WDH 061601 B www.withersravenel.com