20061745 Ver 1_Site Plan_20061220

UPSTREAM END OF STORM DRAIN OVERFLOW NOTE PIPE DIA.
rWw. UTILITY INSTALLATIONS AND OTHER PUBLIC VMIHE /S DWT.IFD BY THE p6Nf6 a. NcaoT q s OR #57 WASHED STONE SHALL FACILITIES, INCLUDING SIDEWALKS AND VgRIgBLo
1/3 PIPE BE USED. POT) TO BE 50'L x 20'w x 6° HANDICAP RAMPS ARE TO BE CONSTRUCTED L
ill W D: ; D I DIAMETER D AT A MINIMUM. ON ALL STREETS AS SPECIFIED BY CITY CODE. )E. A A
~Illlu Kx, na b. TURNING RADIUS SUFFICIENT TO THESE FACILITIES HAVE BEEN APPROVED BY NSW PROVIDED. E ARCM RUCKS Is TO BE THE CITY OF RALEIGH AND SHALL BE SO WIR. Ya ci ~
LuH WINS I e' 'D''I° FRONDED. RIPRAP
BU BY BOTTOM A INSTALLED UNLESS A CHANGE AUTHORIZED OF PLYWOOD ENTRANCE(S) SHOULD BE LOCATED To BY WRITTEN APPROVAL. PUBLIC C SANITARY PROVIDE FOR MAXIMUM UTILITY BY ALL SEWER EASEMENTS ARE TO BE RECORDED
WNSmucnow vEelclES. PRIOR TO FINAL ACCEPTANCE.
NOTE ALL PARTIALLY COMPLETED STORM DRAINS - 3/4• EXTERIOR d. MUST BE MAINTAINED IN A. CONDITION
SHALL BE PROTECTED AT THE END OF PLYWOOD WHICH WILL PREVENT TRACKING OR EACH DAY IN ACCORDANCE WITH THESE DIRECT FLOW OF MUD ONTO STREETS. TYPICAL CONC.
DETAILS. STEEL FENCE PLYWOOD INLET PROTECTION TYF POST (TYP.) PERIODIC roPDRES~NC WITH STONE TRANSPORTATION SERVICES FLA FLARED END
FRONT VIEW UPSTREAM END OF OVERFLOW SILL BE NECESSARY; KEEP SOME HANDY. SE( STORM GRAIN e. ANY MATERIAL. WHICH STILL MAKES IT PUBLIC UTILITIES SECTION
ONTO THE ROAD MIST BE CLEANED UP ISOMETRIC VIEW
IMMEDIATELY. WmK WIRE r.V It . T 1/3 PIPE
SILT Hx¢F1BIaa - 11 DIAMETER CONSERVATION ENGINEER I I II " `o II D. p. 'D. A A A
b o BLL smE S. ' .
TORE RIPNRRAi' tlOg: N. Pw ~ N WASHED STONE FlLTQt N° p e ACROSS PIPE WET ° pl _ PLAN Lo
_tNE 00E RLi fryBLKlrE®® dL~~Y WIN NUMZ Y _ MANE ~~w i FOR M(MR WREN WT C0101WA FWMWID IklfN IN N CAW BA911 / (LOp AREAS a OVER! IR 1 1 l I (y HAROwAta• CLOTH III / oAO`~ o r „'al .o III W
Nwm mK a " NIRECIn er e'aWe1 ° 11( of u L / Sp
do = do = PIPE DIA
a = SIDE NEW STONE FILTER INLET PROTECTION W = La = APRON LENGTH - W = APRON WIDTH
3 X PIPE 0 MIN of = APRON DEPTH PLAN
STANDARD TEMPORARY SILT FENCE PIPE INLET PROTECTION (PLYWOOD AND STONE) C6•MIN / d d
La
2~ MIN - - - - NEAP ETEVARON OF STORMWATER - - SLOPE 0 % FLOW
mL' NCDOT (!5 OR #57 WASHED STONE #NNESNED jM z WITH FABRIC UNOQiLINER SECTION A-A Filter blanket
m N NOTES: I . \ I - SEE APPROPRIATE SCHEDULE FOR DIMENSIONS
STEEP CUT OR FILL SLOPE - - EXISTING SLOPE NOTES: APPLICABLE AT ALL POINTS OF
W1 RIP-RP INGRESS & EGRESS UNTIL SITE IS J SECTION A-A \ 1. La is the length of the riprap apron. NOTES:
21 SLOPE (MAX) VARIES HE LDENCE AMNDQ TIFlMELY CHECKS OF NOTES: MAINTENANCE MUST BE PROVIDED SEE APPROPR SEE APPROPRIATE SCHEDULE FOR DIMENSIONS Filter blanket 2, d = 1.5 times the maximum stone diameter but
- WIM D NN IYRE REEDING SIDE VIEW 7. La is tf not less than 6"
CROSS SECTION 'w EROMM Iv<rms 1. Lo is the length of the riprap apron. 3. In well-defined extend the apron up the
EXISTING SLOPES not less 2. d = 1.5 times the maximum stone diameter but channel banks to an elevation of 6" above the not less than 6" maximum tailwater depth or to the top of the -
bank which ever is less.
yA 3. A filter 3. A filter blanket or filter fabric should be 4. A filter blanket or filter fabric should be
installed UPSLOPE TOE POSITIVE GRADE 1.0% MAX. z NOTE: installed between the riprap and soil foundation. installed between the riprap and soil foundation.
f HEIGHT & WIDTH DETERMINED BY N OS'-1' EXISTING TOPOGRAPHY AND TEMPORARY CONSTRUCTION ENTRANCE/EXIT P
SEDIMENT STORAGE REWIRED. SIDE SLOPES KEYED RIP RAP KEY RIP RAP INTO THE DAN PIPE OUTLET TO FLAT AREA - NO WELL DEFINED CHANNEL PIPE CULVERT OUTLET PROTECTION FOR DEFINED CHANNEL
\ \ \ \ FOR STABILQARON.
I5 WASHED STONE a, MACHINE COMPACTION OF ALL FILL IS REQUIRED.DNERSIONS A. Bury the top end of the mat in
SUFFICIENT TO DIRECT ALL SEDIMENT- LADEN STORMWATEA a trench 4 inches or more in depth.
FRONT MEW INTO ASEDIMFM CONTROL DEVICE MUST BE INSTALLED PRIOR TO STEEP WT OR FILL SLOPE CLEARING AND GRUBBING OF THE AREA (OR IN CONJUNCTION
WTIHRAS OPERATION IF SEDIMENT CONTROLS AND DIVERSIONS AREINSTALLED IS EACH CRITICAL POINT IS REACHED). SEEDING SCHEDULE 00
PLAN ME b, DNERSIONS SHOULD BE LOCATED TO MINIMIZE DAMAGES BY (REVISED: 1-1-86)
CONSTRUCTION OPERATIONS.
IN PURGED OVER 30 DAYS. B. Tamp the trench full of soil. Shoulders, Side Ditches, Slopes (Max 3:1) Secure with row of staples, 10 inch
DIVERSION DITCH CHECK DAM 6 DIVERSIONS SHOULD BE SEEDED AND MULCHED IF THEY PETOREMAI spacing, 4 inches down from the DATE TYPE PLANTING RATE trench.
d, CHECK DEVICE AFTER EACH RAIN, BUT ONCE A NEED( REGARDLESS. REPAIR AS NECESSARY. J( ~W
QO Aug 15 - Nov 1 Toll Fescue 300 Ibs/acre C. Overia --Bury upper add of lower J` N' W P y ,y W Nov 1 - Mar 1 Tall Fescue 300 Ibs/acre
r awr'em(i Tirrr+a rrrrr rr Tar r rY TRANSITION TO arp! ~„~`•rW'rr+ ii .,(.(I n a n n ,I a 0 GRADE - MN + + SAFE 77 strip as 'A' and n & Abruzzi Rye 25 Ibs/acre end of top strip 4 inches s and
--tc- ere simple, _ Mar 1 - Apr 15 Tall Fescue 300 Ibs/acre
~~'~~„."w w wwµ µwµ+rru f r7rr i Ana aV~^' VEGETATED rrwrw `i +++t XmnI + a n ' NATURAL GROUND - m 4 / + v A 1 I a , 6" PVC OR 6' PPC ROOD STORAGE OR R FILL OR cLrt DIVERSION T W W Apr 15 - Jun 30 Hulled Common Bennudagross 25 Ibs/acre Jul 1 - Aug 15 Tall Fescue and 120 Its/acre
.N` RISER WITH SLOTS O KW' V' N TARP PROTECTED WORE °r++++Ay M , .Ar nr rnrr~++++++` I ( '~'~t"Ar' ar`M tiU, IMP EXTENDS TO CAP ZONE (1') sLaPFs COMPACTED 0 *"'Browntop Millet 35 Ibs/acre gti ***or Sorghum-Sudan Hybrids 30 Ibs/acre
~rjT+;p,;;°µ~~` L„ F~r++4+;~_~ STABILIZED TOE OF SLOPE ~R FILL BERM
+r~+l lwµw`. ww~•µ "wwrwy++ /~+.AM ~Lt.M a SLOPE _ + w y, wW TARP Slopes (3:1 to 2:1) D. Erosion stop--Fold of mat buried
1BMal WASHED ~ AFL y, YM' '0,411 'p, = wl„w ww wCw HMI' SI"\a Yr / - v f STONE o _ it slit t trench staples. tompeQ double rowi Mar 1 - Jun 1 Serice, Lespedezo (scarified) 50 Ibs/acre .
141;t;i'AP,„VA1"NVfiA~rl Nn\Ih `Y' 41,41, Nfl \ f / / .y' fit` -'4J, '4° PVC OR 4° CPP
\i TI NII NTI Nr''YA Nrl I J ,N' m0, 11 .,M, -41` 0.40% (Mar 1 - Apr 15) Add Tall Fescue 120 Ibs/acre (Mar 1 - Jun 30) Or Add Weeping Lovegross 10 Ibs/acre
STABLE VIII \I6 NrI I- "'r, mo't' -All,'W' 3'X3'XIB' A SEDIMENT STORAGE ZONE UNDISTURBED Nn Nr1 \ n Nr yrl \In Nn v, ) AT, 41, ,v, vow D50 = 6" STONE APRON DITCH • •io re (Mar 1 - Jun 30) Or Add Hulled Common Bermudagross 25 Ibs/acre
OUTLET Na \II~irNa NrI NrL Nr1 / v' I ' v' '•'N HAS TO BE ANCHORED LENGTH m ti gy o' Jun 1 - Sep 1 "*Tall Fescue and 120 Ibs/acre < `m *esSrowntop Millet 35 Ibs/acre
\Ir1\r~ \Ir- y .,I Vrl lrl \p\Ia Nr a' MIN a P --or Sorghum-Sudan Hybrids 30 Ibs/acre
Nn Nr' \yrVn \InNrI \f n Nr/ V \ 1~ t ~t WEIR DETAIL 3 MIN - r- ww Nn \hI NrNn N6 W W W a r4~ Sep 1 - Mar 1 Sericeo Lespedezo (unhulled-unscmrified) 70 Ibs/acre
W W W o 8 and Tall Fescue 120 Ibs/acre $ (Nov 1 - Mar 1) Add Abruzzi Rye 25 Ibs/acre
Varl Na \fa \1Va NrI°Nn\ n Nr~~ TOP of NAM Nrl Nn NrNO I n _ \In Nrl1 n 'VA '16
Nn Nr~ryr Nh\fn \(n lfa lfnN+,\IrI \fr,iNnNr1 • • fro o~ c`E~ y
Nf~fi ih Nr1~1D \Ir1 Nfl NTI Nn TARP PROTECTION f WEIR LENGTH (10' NINIMOM) DITCH AND BURY BERM/DITCH J v F IrnI~~f Consult Conservation Engineer or Soil Conservation Service for
NOTES I'-~ TARP EDGE 1) DRAW DOWN RISER SHALL BE 6' SCH 40 PVC WITH CLEAN-OUT CAP AND (MIN. 12' OF TARP) 1 1 TYPICAL STAPLES additional information concerning other alternatives for vegetation of #8 Gauge Wire denuded areas. The above vegetation rates are those which do well under
SLOTS, SLOTS SHALL BE i" WIDE VERTICAL SAW CUTS. SLOTS SHALL BE PLACED AT 90 INTERVALS AROUND THE PIPE (4 SLOTS). SLOTS SHALL BE 6° LONG. NOTES. • local conditions; other seeding rate combinations are possible.
ONE SET OF SLOTS SHALL BE SEPARATED FROM THE SET BY 4' OF SOLID PPE. POSITIVE GRADE MUST BE PROVIDED TO ASSUREDRAINA6E THE NUMBER OF SETS OF SLOTS SHALL BE THE DEPTH OF BASIN MINUS ONE.
2) THE TARP USED TO PROTECT THE WEIR SHALL BE THE WIDTH SPECIFIED. IF SLOPE EXCEEDS 2x, sFm AND MULCH DrER51aN TRr E LENGTH OF THE TARP SHALL BE ACCORDING TO AVAILABLE SUPPLY. NOT TO EXCEED 5% (HIGH VELOCITIES REU15T). MAXIMUM e Temporary - Reseed according to optimum season for desired permanent F. Prays ends of mat 4 inches into vegetation. Do not allow temporary cover to grow over 12" in height before "
IF MUL71PLE TARPS ARE USED TO EXTEND PROTECTION TO BACK OF SLOPE D. A. = 5 ACRES WITHOUT SUPPORTING CALCS.. the .1 around structures and stople securely. mowing, otherwise fescue may be shaded out.
MATERIAL VARIABLE THEN TARPS SHALL BE OVERLAPPED AT LEAST I2". UPSTREAM TARP SHALL CUSTOM BASIN DETAIL DIVERSIONS SAT THE TOP DRAIN O SLOPES MUST T EMPTY INTO AN USED. BERM/DITCH OVERLAP DOWNSTREAM TARP. THE TARP SHALL BE 50 MIL HEAVY DUTY SILVER - APPROVED STAPLED IN 6" MIN TARPAULINS FOR SUN RESISTANCE
PLACE T 3) BASIN SHALL BE CLEANED OUT WHEN I/2 FULL. TEMPORARY DIVERSION BERM/DITCH TEMPORARY SWALE LINING DETAIL
5' SEEDBED PREPARATION
-III-I ( III-III-III -III-III III- (-III ROADWAY 1 - 2 - _ 1J CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3 INCHES
'-III I-III-III-I I -III-III-III-III-III-III Cpl REINFORCED ROOT 4FORCED ROOT II I I-I I 1= DEEP OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE.
2. TOWN CERTIFICATION. This design has been reviewed by the Engineer for the Town SYSTEM MAT / TEM MAT I_I = I 2.) RIP THE ENTIRE AREA TO 6 INCHES DEPTH.
-I -III-III-III III-III-III-III-III-III- III- -III I I-III-III-I-L-' of Knightdole, and to the best of my knowledge and belief, it conforms to the / T 3.) REMOVE ALL LOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS 1 EMBED EDGES 4" LEAVING SURFACE REASONABLY SMOOTH AND UNIFORM-
3 AND TAMP UACKFlLL - 4.) APPLY AGRICULTURAL LIME, FERTILIZER, AND SUPERPHOSPHATE
LEVEL UP BURIED requirements established in the Standard Specifications of the Town of Knightdole. L 4- 3 OF SPREADER 1'x3' PRESSURE TREATED STAKE-3' OF 6"MIN By: Date: ON CENTER EACH WAY. 12° IN LENGTH, UNIFORMLY AND MIX WITH SOIL (SEE BELOW*).
Town Engineer CUT DIAGONALLY TO FORM POINT AT w ONE END, _ 5.) CONTINUE TILLAGE UNTIL A WELL -PULVERIZED, FIRM REASONABLY UNIFORM SEEDBED IS PREPARED 4 TO 61NCHES DEEP.
0 These plans are approved by the Town of Knightdale and serve as construction
w DETAIL OF LEVEL SPREADER CROSS SECTION. plans for this project. UPSTREAM TERMINAL 6.) SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING.
I By: Date: NOTES:
NOTES: Administrator 1) TRAVERSE CHECK SLOTS REWIRED AT 25' O.C. AT 25' O.C. 7.) MULCH IMMEDIATELY AFTER SEEDING ANDANCHOR MULCH.
- Levelspreader is designed to disperse small volumes of concentrated flow across stable slopes. 2) UPSTREAM T DOWNSTREAM TERMINALS ARE n REQUIRED AT ALL IERMINAnON POINTS. IALS ARE 6° - 8.) INSPECT ALL SEEDED AREAS AND MAKE NECESSARYREPAIRS OR ITS- - RESEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLEAF
m n 0 3) MAT WILL BE A THREE DIMENSIONAL ROOT - ROOT STAND SHOULD BE OVER 60% DAMAGED, REESTABLISH FOLLOWING
REINFORCEMENT SYSTEM PERMANENT ED EQUAL MAT T SYNTHETIC MAT DVED EQUAL ORIGINAL LIME, FERTILIZER AND SEEDING RATES.
SIA ENKAMAT 7020 P DR APPROVED EQUAL LEVEL SPREADER SUCH o INSTALLATION WILL WILL BE E PER THE DIRECTIONS n A Y SHOWN AND THE MANUFACTURERS S RECOMMENDATIONS. ZECTIONS ° RECOMMENDATIONS. 9.) CONSULT CONVERSATION INSPECTOR ON MAINTENANCE TREATMENT
B 6' 4'-6" 6' 4'-6' q 4) DITCH SECTION WILL MIRROR ON THE LEFT SIDE IF LEFT SIDE AND FERTILIZATION AFTER PERMANENT COVER IS ESTABLISHED.
OF THE ROADWAY. b E
g SWALE SECTION FOR EN PION FOR ENKAMAT TRAVERSE CHECK APPLY: AGRICULTURAL LIMESTONE - 2 TONS/ ACRES (3 TONS/ ACRE IN CLAY SOILS)
8 REINFORCED ROOT SYSTE ROOT SYSTEM MAT FERTILIZER - 1,000 Ids. / ACRE -10-10-10
T v° <-ROADWAY <-ROADWAY (ALTS) (NTS) SUPERPHOSPHATE- 500 Ibs> / ACRE -20% ANALYSIS MULCH -2 TONS / ACRE - SMALL GRAIN STRAW
°o o INSTALLATION PROCEDURES FOR PERMANENT SYNTHETIC ANOTHER - ASPHALT EMULSION ® 300 GALS./ ACRE
MAT LINING (THREE DIMENSIONAL ROOT REINFORCEMENT SYSTEM):
Z Z SO THAT R IS FREE OF ROCKS, SOIL CLUMPS, AND VEHICLE
n 3 T RIP CLASS 1) UNIFORMLY SHAPE AND COMPACT DITCH AND DRESS SITE SO THAT R IS FREE AP CONCRETE IMPRINTS OF ANY SIGNIFICANT SIZE THAT WOULD PREVENT THE MAT FROM Ln CUT SIDE SLOPE SHELVES AND CHECK SLATS 1T THE MAT FROM LYING FLUSH WITH SURFACE CONTOURS.
o 22. FILTER 4 1 1 2) STARTING DOWNSTREAM, WT TERMINAL SLOT (SEE DETAIL) AND ALIGN THE INC AND ALIGN THE INITIAL ROLL ALONG THE DITCH CENTERLINE, - `.$.;..'t,, aaosaoaoessoa
a f I ~T FABRIC STARE MAT INTO TERMINAL SLOT APED BACK FILL ROLL THE MAT UPSTREAM C 4 3 SHOWN. PROGRESS UPSTREAM WITH PEAKED SIDE DOWN, WORKING ACROSS TI THE MAT UPSTREAM OVER REFILLED TERMINAL AND STAKE AS (~`qnj °Oe° WORKING ACROSS THE CHECK SLOTS AND PINNING WITH -III -(N O~
n T 3 4 3 ALIGNMENT. TEMPORARY STAKES TO MAINTAIN TENSION AND INTO S IT. TUCK MAT INTO SLOTS AND STAKE (NOTE: STRETCH MAT - 11-11 F1 I S/ 4, D CURL UP) -I' E 9
3 APPROXIMATELY 5% BEFORE STAKING; MAT EDGES SHOULD CURL UP) a N 7) PROCEEDING UPSTREAM, STARE OVERLAPS AND NAT EDGES ON SIDE SLOPE SI S ON SIDE SLOPE SHELVES AT 3 FOOT INTERVALS. DOWNSTREAM TERMINAL I rl I III II PRE I W LTA ~I oV e
z BASE DITCH © TOE OF FILL RIP RAP VEE DITCH CONCRETE VEE DITCH 4) AT ALL NEW ROLL SPECIES, USE 3 FOOT OVERLAPS AND SHINGLE DOWNSTREA SHINGLE DOWNSTREAM. a ° RY(~p02p6977
EE NTS NTS NTS 5) SECURE UPSTREAM ROLL END IN A TERMINAL SLAT. v
c A DITCH SECTION SHALL BE DITCH SECTION SHALL BE 6) BACK FILL AND TAMP SOIL INTO CHECK SLOTS, TERMINAL END SLOTS, AND SII c - END SLOTS, AND SIDE SHELVES AS THEY ARE CONSTRUCTED. ENKAMAT CHANNEL LINING STANDARD CONSTRUCTION NOT APPROVEb ~CIfiRUCTION (pFS " e' . r~
w MIRRORED IF PLACED ON MIRRORED IF PLACED ON I i) oSiAeut Sriu. TERMINAL AND TRANSVERSE CHECK SLOTS I 060,00t080600
LEFF SIDE OF THE ROADWAY LEFT SIDE OF ROADWAY Il 0
,
o No. Revision Date B Designer Scale
W&R NT5 LANGSTON RIDGE DI
o Drawn By Date WITHERS RAV E N E L Sheet No.
WEC 11 15 O6 o Checked By Job No. DETAILS ENGINEERS I PLANNERS I SURVEYORS 36
W&R 2060090.0 Kni htdale Wake Count North Carolina 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.witheBravenel.com
Y

14 RREHAR 12- 4 REBAR 12" a
D.C. EACH WAY 112" PREFORMED JOINT O.C. EACH WAY 112" PREFORMED JOINT
-FILLER, 12" WIDE MANh'0L1 FILLER, 12' WIDE MANHOLE RING & COVER ACCESS MANHOLE RING & COVER ACCESS
CENiERf CENTERED OVER STEPS & DRAWDOWN VALVE CENTERED OVER STEPS & DRAWDOWN VALVE
~M1
as a
6" PRECAST CONC. SLAB 6" PRECAST CONC. SLAB
VOID SPACE VOID SPACE
PRECAST REINFORCED BOX PRECAST REINFORCED BOX
ELEVATION SEG77DN ELEVATION SECTION
2000 PSF MIN. 2000 PSF MIN.
BEARING CAPACITY SEE BMP SECTION FOR SZIN'G DATA BENEATH COLLAR BEARING GAPACBY SEE BMP SECTION FOR SIZING DATA BENEATH COLLAR
TYPICAL ANTI-SEEP COLLAR - BMP 3 TYPICAL RISE TYPICAL RISER TOP TYPICAL ANTI-SEEP COLLAR - BMP#4 TYPICAL RISER TOP
NTS NIS NTS NTS
4x4' PRECAST BOX /4'x4' PRECAST BOX
PEAK FLOW ATTENUA LION TOP OF STRUCTURE ELEVATION = 202.5 NOTE: PEAK FLOW ATTENUATION r/
PLACE STEM SUPPORTS AT 3' FROM BASE STEM SUPPORTS TOP OF STRUCTURE ELEVATION = 212.5 NOACE STEM SUPPORTS FROM BASE AT 3'FROM BASE
R-s
GROUT EACH SIDE =ACH SIDE GROUT EACH SIDE ~k
!k__
JOINT SEALED WITH A-LOCI GASKET CAST IN MANHOLE EALED WITH A-LOCK NEOPRENE JOINT SEALED W77H A-LOCK NEOPRENE CAST IN MANHOLE WALL GASKET CAST IN MANHOLE WALL
4' NRS GALE VALVE 4' NRS GATE VALVE
LEAVE ENO OF GATE 15" CLASS III RCP VALVE OPEN. 4"xl° TAPPED 15" CLASS III RCP LEAVE END OF GATE 15" CLASS Ill RCP
BASIN BOTTOM ELEVADON = 1920 ~_~CAP. SEE DETAIL VALVE OPEN. 4'x1' TAPPED CAP. SEE DETAIL BASIN BOTTOM ELEVATION = 2020
PAVED INVERT GROUT 6" PAVED INVERT GROUT 6'
a. ~a\~\\\~a\~\\\i\\\i~\\ "
e
RISER & DRAWDOWN DEVICE DETAIL - FOR 8,WP #3 RISER & DRAWDOWN DEVICE DETAIL - FOR BMP 14
NTS NTS
VENT VENT
SCREEN ACCESSIBLE THROUGH DOOR SCREEN ACCESSIBLE THROUGH DOOR
NOTE: SKIMMER MAY VARY NOTE: SKIMMER MAY VARY
SLIGHTLY FROM BMP 3 - I B,,WP #3 - WET POND SLIGHTLY FROM BMP J4 - WET POND
ILLUSTRATION
Skimmer to Use: Volume to be Drained = mer to Use: 2" Skimmer w/ 3' head ILLUSTRATION Skimmer to Use: 2" Skimmer w/ 3' head ie Drained = 30,892 cu. ft. Volume to be Drained = 19,131 cu. ft.
Draw Dawn Time = )own Time = 72 hours Draw Down Time = 49 hours
FLOAT Orifice Area = rifice Area = 2.91 sq. in. FLOAT Orifice Area = 2.70 sq. in.
Orifice Diameter = Diameter = 2.0 inches Orifice Diameter = 2.0 inches
OUTLET END; CONNECTION OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN
NOT INCLUDED WITH SKIMMER NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER SUPPLIED BY' USER
---FLEXIBLE JOINT FLEXIBLE JOINT
BMP SKIMMER DETAIL - BMP#3 BMP SKIMMER DETAIL - BMP14
UTILITY INSTALLATIONS AND OTHER PUBLIC NTS NTS
FACILITIES, INCLUDING SIDEWALKS AND
HANDICAP RAMPS ARE TO BE CONSTRUCTED
ON ALL STREETS AS SPECIFIED BY CITY CODE. THESE FACILITIES HAVE BEEN APPROVED BY THREADED THREADED
THE CITY OF RALEIGH AND SHALL BE SO _ END cap GA TE VALVE TOP VIEW END CAP NOEW / GATE VALVE
INSTALLED UNLESS A CHANGE IS AUTHORIZED BY WRITTEN APPROVAL. PUBLIC SANITARY
SEWER EASEMENTS ARE TO BE RECORDED
PRIOR TO FINAL ACCEPTANCE. RAO. RAO.
w J O END 4' L
rc END 4° TRANSPORTATION SERVICES WEw VIEW 1/2" R
°w 1 i el/2" R D. ~ PUBLIC UTILITIES
N --1° ORIFICE DRILLED CAP END VIEW CONSERVATION ENGINEER IN CAP. SCREEN TO 1' ORIFICE DRILLED CAP END VIEW !N CAP. SCREEN TO
Md - PREVENT CLOGGING. PREVENT CLOGGING.
SECTION VIEW SECTION VIEW
N N L- 4°~
0 l_ I- 4' -I
E 2' 2'
°u 0 1 i T t 1' ORIFICE DRILLED
a 2. TOWN CERTIFICATION. This design has been reviewed by the Engineer for the Town i 7" ORIFICE DRILLED v of Knightdale, and to the best of my knowledge and belief, it conforms to the iHREAOED IN CAP. SCREEN TO THREADED IN CAP. SCREEN TO N AP PREVENT CLOGGING.
v requirements established in the Standard Specifications of the Town of Knightdale. NaP PREVENT CLOGGING. a CAP TOP VIEW CAP TOP VIEW
P By: Date:
o Town Engineer
These plans are approved by the Town of Knightdale and serve as construction
° plans for this project. E
i By: Date: ORIFICE CAP DETAIL BAR °
Administrator ORIFICE CAP DETAIL M BMP #3 - WET POND
M BMP #4 - WET POND °°FESS/~ 9
NTS N NTS PRE I NAgY- ID LAN
O NOTeAPI~20Vde ewitONf*MUCTION
E a v
N G °°•FR°°E. CRFOe

m •wvvvv~-
s
0
o No. Revision Date B Designer scale VATER MANAGEMENT WITHERS RAVENEL Sheet No.
0 1 W&R Drawn By ZZZ Date N,S15Dfi LANGSTON RIDGE STORMWATE a Checked By Job No. D
DETAILS ENGINEERS I PLANNERS I SURVEYORS 33 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withearavenel.com
w&R 2060090.0 Kni htdale Wake Count North Carolina ` Y

I
I
L I y i
i i
j O.C. EACH WAY 712' PREFORMED JOINT REBAR f2° O.C. EACH ACH WAY 712" PREFORMED JOINT D. O
7 FILLER, 12" WIDE FILLER, 12" WIDE
i y - MANHOLE MANHOLE RING & COVER ACCESS MANHOLE RING & COVER ACCESS
CENTERED I n CENTERED OVER STEPS & DRAWDOWN VALVE CENTERED OVER STEPS & DRAWDOWN VALVE
~ I y
OF -O O 6" PRECAST CONC. SLAB6' PRECAST CONC. SLAB
76 _ IT VOID SPACE
B" VOID SPACE
PRECAST REINFORCED BOX PRECAST REINFORCED BOX
ELEVATION SECTION
C~D ELEVATION SECTION 2000 PSE MIN. _ 00 BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA 2000 PSF MIN. BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA
BENEATH COLLAR BENEATH COLLAR
TYPICAL ANTI-SEEP COLLAR - BMP#1 TYPICAL RISER
YPICAL RISER TOP TYPICAL ANTI-SEEP COLLAR - BMP#2 TYPICAL RISER TOP
P' NTS NTS NTS NTS
/4'x4' PRECAST BOX /4'x4' PRECAST BOX
PEAK FLOW ATTENUATION T PEAK FLOW ATTENUATION
TOP OF STRUCTURE ELEVATION = 177.5 NOTE PLACE STEM SUPPORTS TOP OF STRUCTURE ELEVATION = 174.5 NOTE: TEM SUPPORTS PLACE STEM SUPPORTS
ti-n AT 3' FROM BASE 'OM BASE AT 3' FROM BASE
.,C GROUT EACH SIDE CH SIDE GROUT EACH SIDE
1 i
i JOINT SEALED WITH A-LOCK 4LED WITH A-LOCK NEOPRENE JOINT SEALED WITH A-LOCK NEOPRENE
i ;AST IN MANHOLE WALL f~ GASKET CAST IN MANHOLE WALL 4" NRS GATE VALVE
4 GASKET CAST IN MANHOLE N p ~ O " NRS GATE VALVE
x/ LEAVE END OF GATE t~_n 15" CLASS III RCP VALVE OPEN. 4°x1' TAPPED '5" CLASS III RCP LEAVE END OF GATE t~ 15" CLASS 111 RCP VALVE OPEN. 4°xl" TAPPED
BASIN BOTTOM ELEVAITON = 171A CAP. SEE DETAIL BASIN BOTTOM ELEVATION = 169.0 ~CAP. SEE DETAIL
PAVED INVERT GROUT S" //\\\///\\\///\\\///\\\///\\\///\\\///\\\//~\\j~\\~\\\i~\\~\\\r~\\ PAVED INVERT . s. GROUT 6"
yOjOjOj\\iOr\ • _LAj
RISER & DRAWDOWN DEVICE DETAIL - FOR BMP #1 RISER & DRAWDOWN DEVICE DETAIL - FOR BMP #2
NTS NTS
M 4 ® ET POND
VENT VENT SCREEN ACCESSIBLE THROUGH
SCALE: 1" = 30' SCREEN ACCESSIBLE THROUGH DOOR DOOR
NOTE: NOTE:
SKIMMER MAY VARY SKIMMER MAY VARY
SLIGHTLY FROM BMP 1 - W IMP #1 - WET POND SLIGHTLY FROM BMP 12 - WET POND
LLUSTRATION Skimmer to Use: ter to Use: 3° Skimmer w/ 3' head ILLUSTRATION Skimmer to Use: 2' Skimmer w/ 3' head
Drained = 45,302 cu. ft. Volume to be Drained = 33,600 cu. ft.
RCP RISER Volume to be Drained = s Draw Down Time = 5 Twn Time = 49 hours Draw Down Time = 72 hours
fice Area = 6.27 sq. in. FLOAT Orifice Area = 3.16 sq. in.
WATER LEVEL DURING STORM FREEBOARD TOP OF DAM EL. 214.0 FLOAT Orifice Area = f Diameter = 3.0 inches Orifice Diameter = 2.0 inches
TRASH H00 MIN. Orifice Diameter = OUTLET END; CONNECTION
--~I OUTLET END; CONNECTION TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN
II~ I TO OUTLET PIPE OR RISER BARRL PIPE LONGER THAN SHOWN SHOWN
I~I PEAK FLOW ATTENUATION POOL = ~I NOT INCLUDED WITH SKIMMER NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER =1 = PERMANENT MINIMUM SLOPE 3 : 1 SUPPLIED BY USER
-II~, 1111= - POOL FLEXIBLE JOINT
FLEXIBLE JOINT
I l = _ - 1=1 BMP SKIMMER DETAIL - BMPJ1
TEMPORARY SKIMMER BMP SKIMMER DETAIL - BMP2
- - = - - - =1 - _ NTS NTS
I1=1 III=1II-II1=1II- I =II - -
- V I I I-1 11=1 I I- I C I-I i .III-III
-I-_ THREADED ANTI-FLOATATION DEVICE ~I1=1 I I- I _ THREADED 2. TOWN CERTIFICATION. This design has been reviewed by the Engineer for the Town END CAP , TOP of Knightdale, and to the best of my knowledge and belief, it conforms to the
-III; ,III-III _ _ END GAP GATE VALVE w~ GATE VALVE requirements established in the Standard Specifications of the Town of Knightdale.
ANTI-SEEP COLLAR _I - f =111= = - - By: Date:
w NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL =l,,1;RAD. RAD. Town Engineer °
0 BE INSTALLED PRIOR TO THE BEGINNING These plans are approved by the Town of Knightdale and serve as construction plans for this project.
END
w OF OVERALL SITE GRADING AND SHALL BE END 4" L UTILIZED AS A SEDIMENT CONTROL DEVICE WET POND BARREL VIEW / 112" R D. /2 Date: VIEW 1° By:
DURING AND UTILITY C g ONCE SITEOHDASABEEN STABILIZEDOAND GRADING CROSS SECTION ®3L~~~" 0-RING GASKET" ~J 01/2" R D. Administrator
IS COMPLETED THE BASIN SHALL BE CLEANED ORIFICE DRILLED CAP END VIEW UTILITY INSTALLATIONS AND OTHI MONS AND OTHER PUBLIC N CAR SCREEN TO CAP END VIEW
OUT AND STABILIZED. THE SKIMMER DEVICE IN CAP. SCREEN To FACILITIES, INCLUDING SIDEWALK JDING SIDEWALKS AND PREVENT CLOGGING
o PREVENT CLOGGING. HANDICAP RAMPS ARE TO BE C N SHALL BE REMOVED. ON ALL STREETS AS SPECIFIED S ARE TO BE CONSTRUCTED 5 AS SPECIFIED BY CITY CODE. SECTION VIEW
C; SECTION VIEW THESE FACILITIES HAVE BEEN Al S HAVE BEEN APPROVED BY SHAL SSI A C IANGE SLAUBE SO THORIZED 4
- THE CITY NSTALLED°DNLESSIA C ANGEA a WET POND OPTION 4
BY WRITTEN APPROVAL. PUBLIC 'ROVAL. PUBLIC SANITARY
0 2° SEWER EASEMENTS ARE TO BE PRIOR TO FINAL ACCEPTANCE. ITS ARE TO BE RECORDED 2' ACCEPTANCE. }T 1
DIMENSIONS ELEV. ORIFICE DRILLED 9 1" ORIFICE DRILLED
3 NORMAL POOL 5,300 SF 211.0 ENO CAF PREP TSCLOG~aNG. TRANSPORTATION SERVICES THREADED IN CAP. SCREEN TO iERVICES D PREVENT CLOGGING.
POND BOTTOM 2,910 SF 208.0 CAP TOP VIEW PUBLIC UTILITIES CAP TOP VIEW
N TOP OF DAM WIDTH 8 FT. 214.0
ANTI-SEEP COLLAR 60 x 60' NSA CONSERVATION ENGINEER ANEER
1-YEAR STORM ORIFICE 2" ORIFICE 211.0 900°0900°°°
SECONDARY ORIFICE 6"x4' 211.5 ORIFICE CAP DETAIL ORIFICE CAP DETAIL CA
TOP OF RISER 4'x4' RCP BOX 212.5 BMP #1 - WET POND BMP #2 - WET POND o ~o °°FESSIO°°°°?9
m NTS NTS PRELIM NA V FLAN
OUTLET PIPE INVERT IN 15" RCP 203.0 L NOTeAPI§2OVW _jCON$TRIFTION
E OUTLET PIPE INVERT OUT 15" RCP 200.5 E elvGIt°
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Da1e „SOS LANGSTON RIDGE
Job No. ~R 2060090.0 Kni htdale Wake Count North Carolina r
PLAN ENGINEERS I PLANNERS I SURVEYORS 32 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
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2. TOWN CERTIFICATION. This design has been reviewed by the Engineer for the Town ! of Knightdale, and to the best of my knowledge and belief, it conforms to the
' requirements established in the Standard Specifications of the Town of Knightdale.
By: Date \
Town Engineer \
These plans are approved by the Town of Knightdale and serve as construction
plans for this project.
1 1 By: Date: 11 Administrator
i
MA P W--%
MP #1 -WET POND B& #2-WETrUNU BMP #3 - WET POND
SCALE: 1" = 30' SCALE: 1" = 30' SCALE: 1 30'
RCP RISER RCP RISER RCP RISER
1' MIN.
WATER LEVEL DURING STORM TRASH FREEBOARD TOP OF DAM EL. 177.0 WATER LEVEL DURING STORM 1' MIN. FREEBOARD TOP OF E ~ H00 TRASH H00 /TOP OF DAM EL. 175.5 1' MIN. FREEBOARD TOP OF DAM EL 210.0 WATER LEVEL DURING STORM
TRASH H00
=1 _ I I=1 I I~ I = I I=1 I I-1 I L- = II-1II-1II_
-I
PEAK FLOW ATTENUATION POOL I I- I I_I
I~I PEAK FLOW ATTENUATION POOL ~I II I~ PEAK FLOW ATTENUATION POOL - 1) III- II I-_ _ _ -III-III-= -
PERMANENT MINIMUM SLOPE 3 : 1 =„I PERMANENT MINIMUM SLOPE 3 1 I =I I (=II- PERMANENT ; i MINIMUM SLOPE 3 1 -III=III- POOL - I _I 11-1 I 1=1
-III-III = = POOL - -III, III POOL 111111 -1I I-I _ 111 III -111=1 - III- _ 11= I_ -
11- - -11 I I II I I I I1=1 . -111„ 111 I = _ I T=1 _ _ _ :i I ~ "1-1 I I-III- I 11=~ I -1 I
j= TEMPORARY SKIMMER 111111 r " -I I i I-
TEMPORARY SKIMMER ~I -II-=111 1= TEMPORARY SKIMMER
I M-1I I- = "-III=1 - 1 I. I I - -I I1=1 = = 1 I_ =1 =1 i ' I I-I -I 11=1 I I-I 11=„III- I== I
-I 1=11=11=„ =1 11 I 1=1 -I I_ _ 11-11 ~.n I I(=1 I I-ITI- 1 I I-III I I 1= 1 I-ITI- I I 1=1 I I-Ti- l i. ,I I II ~ II I I_-_
ANTI-FLOATATION DEVICE ~ III-II~I~II = ANTI-FLOATATION DEVICE III-III=~={I= ANTI-FLOATATION DEVICE " III-III-II =
~ I I_,,, I I F=El I -III-III=I 1I- =111=1II, II
=III-= -III ANTI-SEEP COLLAR _I -111_111-~ ANTI-SEEP COLLAR -I -III: -I I I _ -III _ -I I1=III-I I - ANTI-SEEP COLLAR -III-1I I-~ - ; -
-111_„,II-I "-III -II.,;,III,;,III„ NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL -III =111_,;,111,;„III,,
NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL BE INSTALLED PRIOR TO THE BEGINNING
BE INSTALLED PRIOR TO THE BEGINNING BE INSTALLED PRIOR TO THE BEGINNING OF OVERALL SITE GRADING AND SHALL BE
OF OVERALL SITE GRADING AND SHALL BE OF OVERALL SITE GRADING AND SHALL BE WET POND BARREL UTILIZED AS A SEDIMENT CONTROL DEVICE WET POND BARREL
UTILIZED AS A SEDIMENT CONTROL DEVICE WET POND BARREL UTILIZED AS A SEDIMENT CONTROL DEVICE WET PON UTILITY CONST ONCE SITE HAS BEEN STABILIZEDOAND GRADING CROSS SECTION ®i p0%5" "0-RING GASKET ONCE SITEOH S BEENDSTABILIZED ANDRGRADING CROSS SECTION 0 29 172% 29 LF 15" "O-RING GASKET" DURING ROADWAY AND UTILITY CONSTRUCTION. CROSS SECTION 38 LF 15" "O-RING GASKET"
DURING ROADWAY AND UTILITY DURING R 0 1.72% ONCE SITE HAS BEEN STABILIZED AND GRADING ® 3.42%
IS COMPLETED THE BASIN SHALL BE CLEANED
w IS COMPLETED THE BASIN SHALL BE CLEANED IS COMPLETED THE BASIN SHALL BE CLEANED OUT AND STABILIZED. THE SKIMMER DEVICE OUT AND STABILIZED. THE SKIMMER DEVICE OUT AND STABILIZED. THE SKIMMER DEVICE
SHALL BE REMOVED. SHALL BE REMOVED. SHALL BE REMOVED.
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WET POND OPTION
WET POND OPTION WET POND OPTION m
0 0 N
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DIMENSIONS ELEV. DIMENSIONS ELEV. DIMENSIONS ELEV.
NORMAL POOL 9,426 SF 173.0 NORMAL POOL 9,214 SF 172.0 NORMAL POOL 8,585 SF 207.0
D POND BOTTOM 5,000 SF 204.0
POND BOTTOM 5,870 SF 170.0 POND BOTTOM 5,730 SF 169.0
TOP OF DAM WIDTH 10 FT. 177.0 TOP OF DAM WIDTH 8 FT. 175.5 5 TOP OF DAM WIDTH 8 FT. 210.0
3 UTILITY INSTALLATIONS AND OTHER PUBLIC ANTI-SEEP COLLAR 60" x 60" N/A FACILITIES, INCLUDING SIDEWALKS AND ANTI-SEEP COLLAR 60" x 60" N/A ANTI-SEEP COLLAR 60" x 60" N/A
1-YEAR STORM ORIFICE 2" ORIFICE 173.0 HANDICAP RAMPS ARE TO BE CONSTRUCTED 1-YEAR STORM ORIFICE 2" ORIFICE 172.0 D 1-YEAR STORM ORIFICE 2" ORIFICE 207.0
ON ALL STREETS AS SPECIFIED BY CITY CODE. SECONDARY ORIFICE 6"x4' 174.5 THESE FACILITIES HAVE BEEN APPROVED BY SECONDARY ORIFICE 6"x4' 173.0 U SECONDARY ORIFICE 6"x4' 208.0
THE CRY OF RALEIGH AND SHALL BE SO , TOP OF RISER 4'x4' RCP BOX 208.5
TOP OF RISER 4'x4' RCP BOX 176.0 INSTALLED UNLESS A CHANGE IS AUTHORIZED TOP OF RISER 4'x4 RCP BOX 174.0
OUTLET PIPE INVERT IN 15" RCP 170.0 SKEWER EASEMENT~RE TOUBECRECORDED OUTLET PIPE INVERT IN _ 15" RCP 169.0 D OUTLET PIPE INVERT IN 15" RCP 201.0
OUTLET PIPE INVERT OUT 15" RCP 169.5 PRIOR TO FINAL ACCEPTANCE. OUTLET PIPE INVERT OUT 15" RCP 168.5 5 OUTLET PIPE INVERT OUT 15 RCP 199.7 o '09 ° %
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m TRANSPORTATION SERVICES PAI~7`~v1INA $Y PLAN
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PUBLIC UTILITIES E a e/vc 1
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o Drawn By Date 0
a WEC 11/15/06 g Checked By Job No.
PLAN ENGINEERS 1 PLANNERS I SURVEYORS 31 777 MacKenan Drive Cary, North Carolina 27511 te1: 919-469-3340 fax: [phone] www.withersravenel.conn
LEKrnightdale Wake Coun North Carolina w&R 2060090.0 Y

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L.-. ' i CONSTRUCTION
ENTRANCE
TYP.
81
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Z EROSION CONTROL LEGEND / Qt- ~Q
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--I FILTER BASIN Q
PASSI VE RECREATION j UTILITY INSTALLATIONS AND OTHER PUBLIC - TEMPORARY DIVERSION \ FACILITIES, INCLUDING SIDEWALKS AND '
I \ _ AREA 0 NO ~)Ih 78 HANDICAP RAMPS ARE TO BE CONSTRUCTED
DENUDED AREA = 71.75 ACRES a FT 8 ON ALL STREETS AS SPECIFIED BY CITY CODE. sF TEMPORARY SILT FENCE \ THESE FACILITIES HAVE BEEN APPROVED BY
a THE CITY OF RALEIGH AND SHALL BE SO ~n
INSTALLED UNLESS A CHANGE IS AUTHORIZED RIP RAP CHANNEL/DISSIPATOR
J ! i BY WRITTEN APPROVAL. PUBLIC SANITARY SEWER EASEMENTS ARE TO BE RECORDED PERMANENT SWALE LINING h i
PRIOR TO FINAL ACCEPTANCE.
! r N TEMPORARY SWALE LINING
v ' y TRANSPORTATION SERVICES
PUBUC UTILRIES GRAVEL CONSTRUCTION ENTRANCE\ LEVEL SPREADER TABLE:
CONSTRUCTION SEQUENCE INLET PROTECTION OUTLET Q10 LENGTH CONSERVATION ENGINEER
1. Obtain a land-disturbing permit. Schedule a preconstruction conference with th y BMP 4 2.85 CFS 38'
Environmental Engineer, Debra Barbee, at 856-7413. - O RISER j,;;' ( BMP 3 3.11 CFS 41'
2. Install gravel construction pad, temporary diversions, silt fence, sediment basins or other ' j BMP 2 3.76 CFS 49'
measures as shown on the approvplan. Clear only as necessary to install these devices. Seed CUSTOM BASIN DESIGN temporary diversions, berms and basins immediately after construction. GN BMP 1 2.94 CFS 38'
min 2:1 ratio ~ 3. Call 856-7549 for on onsite inspection by the Environmental Engineer to i/
Storage Volume Storage Volume Weir Weir
0 obtain a Certificate of Compliance. Surface Area Star 4. Begin clearing and grubbing. Maintain devices as needed. Rough grade site. Drainage Denuded Q10 Req'd (435 X length width Surface Area depth Req' depth Req'd (cy) (1800 Provided (cy) (1800 Length Length'
° Basin# Area (Da) Area (Du) (CFS) Q10] (SF) (ft) (ft) Provided (ft) i 5. Install storm sewer, if shown, and protect inlets with block and gravel inlet controls, (ft) cf/ac Da) cf/ac Du) Req'd Provided
sediment traps or other approved measures as shown on the plan. Begin construction, building, etc. 1 2.0 1.8 5.8 2524 72 36 2592 3 3 3622 7776 1.84 10 69 ~0' H RO4~° %
6. Stabilize site as areas are brought up to finish grade with vegetation, paving, ditch linings, BMP 4 4.5 4.2 12.9 5610 106 53 5618 3 ~q 3 8049 16854 4.09 0 %
FEMAIFLOOD HAZARD SOILS NOTES °a etc. Seed and mulch denuded areas within fifteen (15) days of completion of any phase of 3 2.2 20 62 2713 74 37 2738 3 3 3893 8214 1.98 10 P R L RY
construction. FEMA flood plain on this property is shown per FEMA FIRM # 3720173400J, 4 3.0 2.8 8.6 3745 88 44 3872 3 3 5374 111661 76 2.73 10
m 7. When construction is complete and all areas are stabilized completely, toll dated May 2, 2006. 8 856-7549 for an inspection by the Environmental Engineer. 5 2.3 2.0 6.6 2884 76 38 2888 3 3 4138 8664 2.10 10 i NOT APPRVVD1STRUCTION
" 8. If site There shall be no filling or the erection of permanent structures in the 6 2.8 2.5 8.2 3559 86 43 3698 3 3 5106 11094 2.59 10 q ITC . °°°oe C
R t approved, remove temporary diversions, silt fence, custom basins, etc., and seed out or stabilize any resulting bare areas. All remaining permanent erosion control devices, such as areas of wake county flood hazard soils or federal emergency management 7 3.3 3.1 9.5 4147 92 46 4232 3 3 5950 12696 3.02 10
a velocity dissipaters, should now be installed. agency zones until a flood study is approved by Wake County or fern 0. E 8 1.1 1.0 3.1 1368 54 27 1458 3 3 1963 4374 1.00 10
9. When vegetation has become established, call for a final site inspection by the Before acquiring a building permit for lots marked with an * the builder may 8 Environmental Engineer, Debra Barbee, at 856-7413. Obtain a Certificate of Completion. need to obtain a flood hazard area use permit from Wake County Environmental 9 2.7 26 7.7 3358 82 41 3362 3 3 4817 10086 2.45 10
services. The builder's engineer, architect and/or surveyor (as appropriate) must 10 3.0 2.8 8.5 3711 88 44 3872 3 3 5325 11616 2.70 10
o certify that all flood hazard requirements are met. there shall be no filling or - m the erection of permanent structures in the areas of Wake County Flood Hazard 11 2.4 2.2 7.0 3061 80 40 3200 3 3 4392 9600 2.23 10
CONSTRUCTION NARRATIVE Soils or Federal Emergency Management Agency (FEMA) 100 year flood zones until 3.0 8 8.7 3811 88 44 872 3 a flood study is approved by Wake County and/or FEMA. 12 - 13 3.6 3.5 10.4 4528 96 48 4608 3 3 5469 11616 2.78 10
3 6497 13824 3.30 10
3 THIS 98.71-ACRE SITE IS LOCATED ALONG THE SOUTHWEST SIDE BMP 3 4.1 3.9 11.8 5129 102 51 5202 3 w OF HODGE ROAD IN EASTERN WAKE COUNTY. THIS 2. TOWN CERTIFICATION. This design has been reviewed by the Engineer for the Town 3 7359 15606 3.74 10
PROJECT WILL CONSIST OF APPROXIMATELY 225 SINGLE-FAMILY of Knightdale, and to the best of my knowledge and belief, it conforms to the 15 1.7 1.5 4.8 2108 66 33 2178 3 3 3025 6534 1.54 10 IMPERVIOUS SURFACE CALCULATIONS y
A LOTS AND 13,091 LINEAR FEET OF PUBLIC STREETS. requirements established in the Standard Specifications of the Town of Knightdale. 16 3.4 3.1 9.9 4300 94 47 4418 3 i 3 6170 13254 3.13 10 x
^ RUNOFF FROM THIS SITE IS TRIBUTARY TO AN UNNAMED TRIBUTARY IN By: Date: 17 2.5 2.4 7.1 3085 80 40 3200 3 3 4427 9600 2.25 10 TOTAL AREA: 98.71 AC
THE NEUSE RIVER BASIN. Town Engineer 18 47 4.5 3.5 5869 110 55 6050 3 3 8422 18150 4.28 10 28% (MAX ALLOWABLE IMPERVIOUS): 27.64 AC = 1,203,946 SF GRAPHIC SCALE
SEDIMENT RUNOFF IS TO BE CONTROLLED BY THE USE OF CUSTOM These plans are approved by the Town of Knightdale and serve as construction 19 2.5 2.4 7.3 3183 80 40 3200 3 3 4566 9600 2.32 10 IMPERVIOUS AREA IN PROPOSED ROADWAYS: 402,799 SF 60 0 30 60 120
t BASINS, TEMPORARY DIVERSIONS, SILT FENCE AND OTHER plans for this project. BMP 2 4.4 4.2 12.6 5494 106 53 5618 3 3 7883 16854 4.00 10
i MEASURES AS SHOWN ON THIS PLAN. s By: Date: 21 1.7 1.6 4.9 2144 66 33 2178 3 3 3077 6534 1.56 10 IMPERVIOUS AREA IN RECREATION AREA: 65,000 SF
a TOTAL DENUDED AREA IS APPROXIMATELY 71.75 ACRES. Administrator BMP 1 4.0 3.4 11.5 4996 100 50 5000 3 3 7169 15000 3.64 10 REMAINING IMPERVIOUS AREA FOR LOTS: 736,147 SF 1 inch = 60 ft.
Note: V of freeboard is provided for each Basin. Cleaneut Basin with 1/2 full MAX IMPERVIOUS AREA FOR
w FEMA FLOODPLAIN ON THIS PROPERTY IS SHOWN PER FEMA FIRM#
i 372017340DJ, DATED MAY 2, 2006. LAUH LVI /00,14/~LL4): J,ZiSb bt
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g No. Revision Date B Designer Scale GRADING STO F
W&R =60 STORM DRAINAGE, AND WITHERS RAVENEL Sheet No.
c Drawn By Date LANGSTON RIDGE
g CBD 11/15/06
o Checked By ,eh No. EROSION C DN CONTROL PLAN ENGINEERS I PLANNERS 1 SURVEYORS 13 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
w&R 2060090.0 Kni htdale Wake North Carolina Y

STORM DRAINAGE TABLE -PHASE I STORM DRAINAGE TABLE -PHASE II
UTILITY INSTALLATIONS AND OTHER PUBLIC GENERAL EROSION CONTROL NOTES S'I'ORMDRAINAGE TABI,E-PHASE I I-ryshcam Upstream Upstream Upstream Downstream
FACILITIES, INCLUDING SIDEWALKS AND psec:ml Fp ream HANDICAP RAMPS ARE TO BE CONSTRUCTED hdtt 'Fdol P41II Inntt Downstream hilet total Full Invert Doom1ream Inlet "ILta1 Full Invert Invert
ON ALL STREETS AS SPECIFIED BY CITY CODE. (1) ALL LAND DISTURBING ACTIVITIES SHALL BE CONDUCTED IN ACCORDANCE WITH WAKE COUNTY I psneam11)mmstream lull hdCtanmy ltmwnal it pstreandnletl System Capncit2 Section! txngth Fletation~ I",it ~ Cinunmted 1lxstman' a(led I ISlmaml Downstream Rim Fievafiou National Listreaminlef System Capacity Section Length Elevation Invert Constucted Ulstmam Downstream Rim Rational Utetreamhilet System Capacity' Section 1sngth Elevation F7evation Constructed
THESE FACILITIES HAVE BEEN APPROVED BY SOIL EROSION AND SEDIMENTATION CONTROL STANDARDS AND PRACTICES. ~S nlnmc' Fhn hln (i) oertckm Alta ptCl ) li pl st (cBJj ('s) she(l) (R) oft) 1?Icnrtian (fp1 slop Swctme THE CITY OF RALEIGH AND SHALL BE SO as 2 r X324 21esrn 9 o~ 3on 47.14 36 4 211 91 9' osr 111 42 Structure Struchor (it) ~Coefficient .-%rea(actes) Ilotc(efs) (efs) Sin (in) (11) (It) Elevation(ft) Slofx Struchrce Shncture Elevation(ft) Coefficient Area (acres) Flow (efs) (01,) Site (in) nn On On slope( CB-42 CIDil 257.91 OS2 0.06 6.61 11.56 15 aft 253.13 25221 3 20 CB-80 PBS-79 192.13 0.63 0.06 39.28 19729 36 146 18187 169.04 8.75 0.50 - - CB-81 CB-80 191.71 0.33 106 39.11 66.69 36 26 18227 18201 1-00
INSTALLED UNLESS A CHANGE IS AUTHORIZED (2) THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING ALL TEMPORARY SEDIMENTATION -I- - 21 -F--- C11+2a ('B-1% IICS-I 219,89 0,441 1,23 3 49 97 32 36 67 211, 9 _ 2102?.Of CB-42A C11-42 25791 040 013 3.72 4.57 15 24 25375 253.63 0.511 2.00 - -
BY WRITTEN APPROVAL. PUBLIC SANITARY AND EROSION CONTROL DEVICES SHOWN ON THE APPROVED PLAN. --t 3-- T - c11+213 SEWER EASEMENTS ARE TO BE RECORDED us3 _IC B-2 241 a 0601 0.13 _I9 IF 24 85 218-161 213.91 So CB -4213 ('B-11.1 157,61 0.33 1 .46 3.41 1.57 15 33 254.14 25395 0.50 CB-82 ('8-114 195,42 0.33 096 2368 89.48 36 115 186.65 18458 110 I - 5 DO - CB -83 (13-82 193 40 1191 0.18 21.92 94.32 36 136 189.57 186.85 2.00 ('13-42(' C13-1213 25261 0.69 0.10 0.511 5.57 15 24 254.46 25439 0.50
1CII-3 ail 5 0_63' n 12 19 17 47.97 24 114 22349 218.361 450 113 427 PRIOR TO FINAL ACCEPTANCE. (3) ALL AREAS DISTURBED DURING CONSTRUCTION SHALL BE STABILIZED WITH TEMPORARY SEEDING C13-4 - - - c11+3 _ C3G - 06!1 i 85 224.72 0.50 150 - CB 8+ (13-108 200.40 0,95 0.01 16.42 17.16 36 24 194-58 194.46 0.50 ('114 C13-42 261.59 0.54 0.08 3.19 15.15 15 62 25731 23393 5.50 - - - 1 0 50 - CB 83 CB-84 202.48 0.65 015 1.6.43 4511111 36 82 196.33 19473 2.50
AND MULCHING WITHIN 15 WORKING DAYS FOLLOWING COMPLETION OF GRADING. PERMANENT ('13-4 \ CB-4 2313 1,77 4, 57 h 2 224 - 11143:y SEEDING, MULCHING AND GROUND COVER SHALL BE APPLIED TO THE SITE FOLLOWING Ct; CI Tr4 23799 0.591 aa9' 1686 h2:1r 24 194 2314 22369 - 4.00 081-++ CI3 4. 1 6'13-43 261,51) 0.61 _ 031 1.39 4.57 15 24 257.66 257-51 050 CB-86 CB-85 202.48 0.51 0.19 15-91 47.16 36 24 197.15 197.03 0.50 4'00 CI3 41 ('13-43 271 15 0 GI 0.17 1.51 15.27 15 96 265.22 257.54 800
COMPLETION OF CONSTRUCTION. CB 51 C}}S 23799 (7. _ 17 ~M +.57 ID _24 r3r68 23256 050 CB +S TRANSPORTATION SERVICES CB -6 0135 247 J8 0.63' 0,06 M67 4799 24 191 23613 23165 4.50 (81-+6 CB 87 CB-86 20412 076 007 15.23 31.99 24 71 199.57 19815 2.00 0.50 C'B 15 ('k-44 271.15 O S 0 20 0 77 4.57 15 Zl 26554 265.42 0.50
450 - CB 88 CB-87 1-- _ 074 006 10.88 59.85 24 40 202.57 199.77 200 CB -10 FFS-460 220.53 O.T 0.03 32.40 782.65 36 50 21.'..74 209.99 7.50 CB 89 CB-8R ?0749 034 0.66 14.62 16"W 24 24 202.89 20277 0.50 _ 1,00 CB-47 I( n-46_ 222.40 _ 0.65 0.11 5.52 26.57 18 46 217,55 214.61 6.40 CB-90 CB-89 208.98 0.39 OSI 13.13 35.77 24 38 20404 20309 2.50
PUBLIC UTILITIES (4) SLOPES SHALL BE NO STEEPER THAN 2:1, PREFERABLY FLATTER, FOR VEGETATIVE COVER. CB -7 036 24148 054 0.11 13,83 22.62 24 25 24011 239,90 _ 1.00 Cu-47 C138 0137 24751 0,56: DoS 1311 43.51 24i 43 24225 240,66 3.71 (11.171 3.70 CB-477CB-47 222.40 0.57 0.29 1.20 4.57 15 24 21792 217.80 0.50 CB-91 C11-90 20898 0,67 007 11.81 16-00 24 24 204.36 204.24 0.50
(5) THE CONTRACTOR SHALL FAITHFULLY MAINTAIN ALL SEDIMENTATION CONTROL DEVICES AND TAKE u38a cH8 4751 036 0 057 457 I; 27 21392 243.80 0so 1149 050 C11-49 JB_48 - ~ 225.28 0.6-3 0.08 4.17 7.39 _ 18 tll 21998 219.13 OSO CB-92 CB-91 221.35 058 0.07 11.54 67.86 24 131 21635 204.56 9.00
ANY PRECAUTIONARY MEASURES TO ENSURE THAT SILT DOES NOT ENTER ANY NATURAL STREAM CB-9 0> 8 1 250.89 OM 0.02 1274 16.61 18 79, 245.91 24394 2.so c11-5o CONSERVATION ENGINEER CHANNEL LOCATED WITHIN THE SITE. DRAINAGE CHANNELS MUST BE CLEAN OF SEDIMENT AND CB-la C&9 _ 256.5 4S2 036 717 25.95 18 86 2 L8, z)59 6.1CB-5I 2.50 CB-50 ('11-49 225 28 0.39 0.65 187 7.43 18 24 220.30 220.18 0.50 CB-93 CB-92 229.81 0.73 0.03 1130 61.95 24 108 224.65 216.55 7.50 _6.10 CBS1 C'13-50 225.50 0,-'-' 1.03 2.33 4.57 15, 42 220.76 220.55 0.50 CB-94 CB-93 229.81 0.73 0.03 11.18 16.00 24 24 22497 224.85 0.50 _0.50 ('B-52 _ 613-51 225.50 0-0S . 0.05 025 4.57 15 24 221.08 22096 0.50 CB-95 CB-94 233.09 0.63 0.16 1104 63.98 24 34 227.89 225.17 8.00
STABILIZED BEFORE THE PROJECT IS RELEASED BY WAKE COUNTY. CI3-II C>rto 2565 L_ 035 _ 0.26 6,60 7.43 18 24 212.16 25204 a5o C11-n
CH-1 _ 1 _ 451 0.50 CBS-4613-31 246.88 0.43 0.46 1118 16.00 24 32 240.60 210.44 0.50 CB-96 CB-95 233.09 0.35 0.74 10,38 16.00 24 24 228,21 228.09 0.50
(6) TEMPORARY SILT FENCE MAY BE REQUIRED TO BE INSTALLED IN AREAS WHERE SEDIMENT BASINS CR-112 1 0'10113 -11 26144 0, 0739, 0.01 X99 43 8~ 75 24 2 2+623 ?74 24.1 2466.11 9 _ 25089 - o.a9 172 743 is O5 105+ HAVE BEEN REMOVED, GRADED, AND SEEDED. THE SILT FENCE SHALL REMAIN IN PLACE UNTIL 1 -IMPERVIOUS SURFACE CALCULATIONS GRASS IS ESTABLISHED. C1,-13 CB- - -_25x69 05sl 0,07 26 1,82 11 43 249.06 246 .48 6o CB-55 _ 0.5o ('13-54_ ICB-53 247.55 0_, 1.22 11.04 31. 19 24 91 242.533 240-80 1.90 CB-97 CI3-96 248.33 0.84 0.06 8.64 63.18 24 190 243.23 22841 7.80 CB-55 6'13-51_ 217.55 0.41 0.65 3.62 16.00 24 17 242.82 24273 0.50 CB-98 CB-97 25270 0.68 0.17 8.30 50.58 24 37 245.28 243.43 5.00 6.00
-r - --I-- 01314 C&U 254-69 044 0.14 398 4.S7 is 24 249.38 249-26 OSf CB-56 050 CB-56 613-55_ _25].99 _ 0.56 0-05 7,04 19.66 18 129 248.09 243.57 150 CB-99 CB-98 25270 037 0.93 7.51 16.0 34 24 247.90 247.78 0.50 CB-100 CB-99 25445 035 0.36 5.12 14.44 15 37 250-50 248.65 5.00
15 CB-%A 94 2-522 24958 6.01 c13 279- O6~ 69 _013 u; 15.82 s7 CB-%A CB-56 _ ?5199! 1133 1.00 2.05 1.57 15 32 210.50 2J8.3d 0.50 6.00 C13-1000 CB-100 _ 251.45 Q65 0.13 0-61 4.57 15 24 250.82 250.70 050 CB-57 C13-56 256.62 031 0.34_ 5.62 16.79 15 77 253.49 248.29 6.75
TOTAL AREA: 98.71 AC O 7 THERE ARE NO DESIGNATED AREAS FOR BORROW OR WASTE ON THIS PLAN. EXCESS TOPSOIL OR cl3-li 14 OTHER WASTE MATERIAL SHALL BE HAULED OFF-SITE. NO BORROW, WASTE, OR OTHER GRADING cB-I6 c1315 26284 ocsl 0.10 2.96 17.09 111 37 2±801 22542 _700 - 7.0(1 - CB 101 CB-100 26198 0.37 027 3.65 18.50 15 103 259.15 250.70 8.20
28% (MAX ALLOWABLE IMPERVIOUS): 27.64 AC = 1,203,946 SF ACTIVITY SHALL OCCUR OUTSIDE THE DESIGNATED LIMITS OF CONSTRUCTION. C&11 073-16 262,94 038 0.66 2.52 4i7 b _LI 21833 b824 050 f 1158 C H 58.1 01313 CH- 17 263.63 044i 0-14 _02 I1001+-39 25266 21853 2.9 050 613-58 CB-57 262.60 - 0.82 0.05 4.81 17.81 15 75 259.39 253.69 7.60 CB-102 CB-101 27056 0.58 0.07 2.96 17.09 15 103 266.56 259.35 7.00 290 CB-58-1 CBSB 262.60 063, 0-04 0.18 4.57 15 21 259.71 259.59 0.50 CB-102A CB-102 27056 0.52 0.36 1.35 4.57 15 24 266.88 26676 050
IMPERVIOUS AREA IN PROPOSED ROADWAYS: 402,799 SF (8) FLOOD HAZARD REGULATIONS THERE SHALL BE NO FILLING OR THE ERECTION OF PERMANENT CI I_ Ct31s _26363 0.63 0.06 0 7 ~ 24 259.98 2,986 0.so ('11-59 - C1359 ICB-58 26665 0.58 0.21 4.34 14.44 15 ~ 261.34 259.59 5.00 6'13103 CB-10227647 OS2 009 1.37 15,01 _ 15 106 _2_72.48 _266.76 5.40 (150 ('1360 CB-59 2666 050 0.-,0 3.47 4.57 15 24 261.66 26134 0.50 CB103.1, CB-103 276,47 0.48 0. _6 --_457 IS 24 272.00 272.68--_-----0.50
STRUCTURES IN THE AREAS OF WAKE COUNTY FLOOD HAZARD SOILS OR FEDERMAL EMERGENCY c13-20 '11-6 246.56 O63 0.08 6r6 1.21 19 41 242201 241;41 210 CJI61 2.10 - ('KCI _ ( 13 60 26795 035 0.61 2.41 11.19 15 ?6 26294 261.86 3.00 CB -104 CB-103 28139 0.95 001 0.67 13.71 15 101 277.73 272.68 4.50
IMPERVIOUS AREA IN RECREATION AREA: 65,000 SF MANAGEMENT AGENCY (FEMA) 100 YEAR FLOOD ZONES UNTIL A FLOOD STUDY IS APPROVED.BY CB-21 0320 246 6 0 3 097 32 _.43 _ is 2d 27512 24240 050 CB-6i- 3-'0 CB-62 6'1361 26293 0-43 025 0.78 4.57 15 24 26326 263.14 0.50 CB-105 CB-104 28139 0.73 OA3 0.61 4.57 15 24 277.55 277.43 Mo 2.:0 '50 CB-64 ITS-63 257.68 0.63 0.06 17.30 61.95 23 49 247.68 244.00 7.50 CB-106 CB-105 284.88 0.69 0.05 0.45 18.83 15 37 280.89 27275 8.50
WAKE COUNTY AND/OR FEMA. BEFORE ACQUIRING A BUILDING PERMIT FOR LOTS (OR OPEN SPACE) 0322 C&21 25062 0.35 O:ii 308 10.21 151 124 241881 24178 251 11164 REMAINING IMPERVIOUS AREA FOR LOTS: 736,147 SF MARKED BY AN (ASTERISK), THE BUILDER MAY NEED TO OBTAIN A FLOOD HAZARD AREA USE CB-224 01322 25062 0.631 008 0,6 57 1S _ 24 246zo 246 08 0.5o C1s.65 0.50 C-11 -65 _ C13-64 26, 55 __1167 0-07 5.06 24.41 18 102 254.12 248.61 5.40 C13-107 CB-106 284.88 OS6 0.05 0.20 457 15 24 281.21 281.09 050
8.00 CB 66 CB-65 _G 55 11.67 0.07 4.79 7.43 18 24 254.44 25432 0.50 CID 108 CB-83 20040 0.41 0.17 21.54 150.65 36 88 19426 189.77 5.10
MAX IMPERVIOUS AREA FOR PERMIT FROM WAKE COUNTY ENVIRONMENTAL SERVICES. THE BUILDER'S ENGINEER, ARCHITECT Cli--3 c . 22 260.4i 0 031 1 161 18.21 15 120 25..68 246.08 8.01 011.66 AND/OR SURVEYOR (AS APPROPRIATE) MUST CERTIFY THAT ALL FLOOD HAZARD REQUIREMENTS C'I3-24 C'1323 26445 0.63 0,10 0451 457, 15 24 2 000 15.88 45r C11.6i EACH LOT (736,147/224): 3,286 SF ARE MET CI325 0432 • 21T53 0-65 0.1i 1.43 1593 24 1211 213.3 212.93 051 CB-68 0.70 CB 67 1366 26058 0.43 0120 4.52 7.43 Is 37 254.3. 254.64 0.50 CB-109 _ C11408 207.96 0.44 0-09 6.17 1938 15 84 203.81 196.25 9.00 OSO CB-68 613-67 260.04 0.41 0-34 401 7.43 78 39 255.22 255.03 050 CB-109A CB-109 207.96 0.63 0.04 0.18 457 15 24 204.13 204.01 0.50
C13-254 C[325 217.53 0.63 0.16 0.73 4.57 1S 24 21440 21428 051 CB-69 0.50 ('B 69 (11-63 26(104 0-,2 1571 3.15 4.57 t5 24 255.79 255.67 OsO ('13-110 (713_10 211.63 0.63 0.04 5.79 16.97 15 52 207.60 204.01 6.90
(9) CONTRACTOR SHALL MARK THE LIMITS OF THE BUFFER WITH ORANGE TREE PROTECTION FENCE IF CB 26 C43 w 224 a 4.r,7_ 0.07 _ 2213n 16. 36 24 21406 213 94 050 CB-70 CB -111 CB-110 217.02 053 0.14 5.65 14.44 15 37 209.65 207.80 5.00 05f1 CB 70 C &GJ _ 5>-93 0.59 _ 009 12~~ .7.99 24 _ 43 24951 247.83 200 CB-1110 C13-111 217.02 0.35 0.61 157 457 15 24 212.35 21223 0.)o
THERE IS ANY CONSTRUCTION WITHIN 50 FEET OF THE EDGE OF THE BUFFER. 63727 01426 227.591 0731 003 2696 163.37 361 120 2146 21426 6.00 011704 CB-28 Ct127 23098 067' 0.07 1647 14913 36 ~ 36 223.46 221,66 S'o CB371 6.00 613701 (B-70 23798 0,-'," 192 9 7.43 13 4 250.16 25004 050 - I---- - ('13112 CB-111 232.41 0.65 0-13 3.89 19.70 15 162 226.42 211.35 9.30 )g) CI371 (I3-70 _ 25(;68 O.T.• 003 _921 .9.83 24 54 25141 24974 :.10 6131 13 CB-112 232.11 0.34 1.63 3.38 457 15 24 226.74 226.62 0.50
EROSION CONTROL LEGEND - C13281 CB-29 230,98 432 0631 171 457 1. 24 » 133 225211 0.5O 11371:1 050 CB 711 ('13-71 25668 028 0,11 67 4.57 15 24 25228 252,16 0.50 ('B-114 CB-81 190.29 0.34 1,07 37.13 9241 36 75 18391 182.47 1.92
2. TOWN CERTIFICATION. This design has been reviewed by the Engineer for the Town CB 29 C1t2 - 23921 0. 0 1>,m 25ui 163.37 36 127 231.28 223661 6.04 Cu-71H ('13-71H CB-71.\ 258.12 0,71 0,27 282 I L19 15 38 25 62 52.48 ".00. (.01J _ CB 1141 CB-114 19029 (164 027 1.27 4.57 15 24 186104 185.92 0.50 ('B 73-71B 25812 068 029 1.44 457 15 24 25394 50'
of Knightdale, and to the best of my knowledge and belief, it conforms to the C13-31 J1330 2'4707 06311 2t _ 2;191633 361 _ 66 23924 21526 (00 1'u-71c requirements established in the Standard Specifications of the Town of Knightdale. CL 33 71332 2;370 467 _ 4071 _i3 1o -00 21 92 24614 24568 Osl 00 - 82 2.50 .50 }'I l1 5A CB-114 248 96 0.30 0,29 11.45 66.70 24 121 196.76 18606 8.70 0.-I) 0137 x(.13-71 257.73 Ob6 0.09 5.16 1001 t5 36 25302 252.76 2 CB116 }7-115.1 225,38 067 033 10.94 7153 24 131 2_12.9_5 199.85 10.00
INLET I17PROTEC11ON TEMPORARY DIVERSION J - 1 _ - - (11724C 1331 C 2 6J~ 4td4019 13 181 160 _ 14 {4 _ 46 C 246 141 051 - 1751) I B-72.\ 13-72. 2758 031 0.74 L85 457 15 24 25334 25322 o.50 CB-117 (-If-] 16 13321 076 0.07 - -954 6972 24 178 230.24 213.33 9.50
0 1.[37. To By: wn Engineer Date: CI335 01134 2_S+9 0221 0.0. S21 22.6? 24 50 24426 246. 1,0 n , 1 _ 2 1110 ('B7 CB-72 .21 063 0.02 3.26 9.14 15 1.64 256.50 25+22 200 ('13118 (B-117 23)00 06+ 0.03 9.19 65.56 21 39 233.72 23043 &40 261 CB-74 IC13~6122 063 004 3.18 4.57 15 21 25682 25670 0.50 CB-119 CB-118 239.00 035 018 9.09 16.00 24 2+ 234.04 233.92 050
CONSTRUCTION ENTRANCE u3 35 S c133 2:949 3, a> 009 5 40 51 1.11 74 5 RISER no To These plans are approved by the Town of Knightdale and serve as construction GR 36 CI33 2,4081 O.4o~ 3838 001 241 - 2 2 2486 248 84 761 0,50 1XI C 13 76 0.50 CB 75 ('13-74 ..6.. 31 038 0.52 3.01 9.80 15 3.4 25780 2570? 230 CB 120 ('B- 119 24268 061 023 8.15 63.98 24 39 23266 23154 8.00 050
CB-37 1 o'-111 , 11 24 sr TEMPORARY SILT FENCE plans for this project. CB-36 MOM! _ 434 1152 600 4 2189; 24.985 51 01178 (7376 (23-75 26231 0.}8 0->8 1.60 4.57 t5 24 258.12 258.00 0,50 CB Pl (B-120 242.68 0.41 030 2.5 16.00 24 21 3798 23786 0.50 050 - 4_7 5' , 020 2.44 s li 1. 29 261.61 261.00 050 CB 122 C&121 25722 0.35 073 6.73 32,01 18 149 272.77 23892 930 1_! CR 78 765-77 26524' 0
0638 'iCk3-3. 28919 0~ 4.171 IIIP 1600_ 24 395 Ir_>0 ('I3-79 CB-78 265.211 037 _ 0.62 L68 4.57 15 21 261.96 261.81 0.50 CB-13 CB-122 26649 0.32 0.66 1.99 2343 18 178 26193 253-04 5.00
RIP RAP CHANNEL/DISSIPATOR ^1937 c}917 050 [1179 FILTER BASIN By: Date: 0139 CB-b8 - _25830 0314 0,94 959 1600241 9(, 2505 249 7 03 41330 0.50 JB-30 ('B-29 24339 S'1, A.:1 _25.14 1(3.37 36 It 235.03 231.48 6.0(1 CB-123A CB-123 26639 0.95 0.01 0A7 4.57 15 24 262.25 262.13 0.50
Administrator CB391 0133) ,5930'- 4.63 0.10~0I 4571 _ h 24 25463 254,1 O.Sf J&3a CB-40 01339 256221 4.331 0101 7.521 I 21 165 2 107,9 2SO.b 030 -411 J13-32 ('13-31__~252A0 S'A V~d 1329 52.58 24 97 245.48 24024 5.40 613-120 CB-123 267.75 0.+1 0.24 3.50 15.58 18 58 263-41 262.13 2.20 0?0 113-48 613-47 23.60 A' A S::A 4.11 14.35 18 71 21423 217.75 200 - CB-125 CB-124 26775 0.66 009 013 7.43 18 24 263.73 26361 0.50
CB-127 CB-127A 27530 0.65 0.11 0.52 4.57 IS 24 271.13 271.01 MID JB-126 C13-124 204.88 ? LA 1~A 243 10.81 15 58 265.23 263.61 2.80
CB-127A A7 126 275.30 0.49 0.24 2.44 U-29 15 85 270.65 265.89 5.60
x, iO .J JB-128 CB-127A 236.99 N,A '_OA 113 1401 15 94 27596 271.34 4.70
LI TS OF LIMITS LIMITS CB 129 03128 285.77 0.95 0.01 1.15 457 15 87 277.29 276.86 0.50 ~V + CB 130 CB-129 28501 063 0,02 L09 457 15 40 27769 277.49 0.50
/ - DIST BANCE DISTURE DISTURBA CE CB 130A CB-130 _-28501 063 004 o18 4.57 15 24 28076 280.64 050 y - - ( CB-131 CB-130 28204 0.55 0,21 0.34 757 15 pia 27844 277.89 0.50
Y _ 20' TOWN-4F 1KMGHTDALE STQkkj1kSE c: ~V 03-133 FTS-132 195-67. 0.70 0.21 593 33.22 18 140 186.00 17200 10.00
C t• .'C ` v V TREE PROTECTION EASEMENr' 2a' CB 134 CB-133 199,99 0,63 004 4.91 26.78 18 100 195.28 188.78 6.50 15 24 195.60 195.48 0.50 -134 19999 095 002 _ 0.14 _ 4.57- -
- _ f' _ 1 I I 1 vv v 3 ~ -131 20173 054 011 4.61 3322 18 40 19943 195.48 10.00 34
1 v 7 i ~5 CI3.._- CB 1 1 / -135 204.73 0.34 0.58 4.20 7A3 18 24 19980 199.68 0.50 CB 137 CB-136 218.81 046 020 280 20.43 15 133 213.35 200.05 MOO
X11 IN#8 BASIN #11 BASIN#8 CB-137A CB-137 218.81 0.63 0.10 045 4.57 15 24 214.14 214.02 0.50
, A J / I 7 1 I 1 y% 1 v A l I !I j / - I~~' AVAS 03138 CB-137 23351 0.73 0.03 1.70 19.70 15 161 228.53 213.55 9.30 CB 138A CB-138 23351 0.63 002 0.09 4.57 15 24 228.85 228.73 0.50
r 1 12 y 1 / ~1' ~1 11 0 1 1 1 I / CB 139 CB-138 23669 0.63 0.06 1.46 1911 15 34 231.70 228.73 8.75
CB 140 CB 139 236.69 034 048 1.19 457 15 24, 232.02 231.90 0.50 v _ 55 I IF T JB 11 V, kT4 ldl 248.96 NSA *s/A 8.21 16.00 29 44 16572 165.50 0.50
3 ~ 5 A k - - 1 I I I I 1 1 CB 142 JB 1419 202.29 059 031 8.25 3322 18 159 182.12 16622 Moo
1 1' 45 i 1 CB 113 (B 142 207.92 0.52 012 7.18 33.22 18 129 19792 185M 10.00 1
yF+ ~ i i 1 1 ; 1 / 'I i % ~ ti I 5, CB 1430 CB-143 207.92 0.71 0.08 0.41 4.57 15 24 20325 203.13 0.50 CB 144 CB-143 220.80 056 0.15 850 33.22 18 140 212.12 198.12 10.50
I ! I 1 ~ CB 1444 CB-144 220.80 0.58 014 059 4.57 15 24 216.13 216.01 0.50
CB-145 CB-144 23171 0.951 CB 1431, CB-145 23371 035 Ub 0.64 24.57 18 1 24 229.04 2221232 7.00 1 1 ' \ `SV\ \ 8.92 Mo
2 2 /s . CB 14( ('B 145 133.53 095 001 492 743 18 38 22559 22540 OS_o
I i t I CB 147 CB-14( 23373 0.73 003 4-87 7.43 18 24 22591 22579 0.50 CB-147A CB-147 231.49 034 121 3.07 457 15 91 226.57 226.11 0.50
v ) / i .59 4.77 15 24 226.89 226.77 0.50 .i 1 L CB- 117B CB -197.4 23149 068 012 0- -
CB-148 CB-147 236.99 0.63 008 2.00 18.27 I538 231.95 228.91 8.00 CB-1480 CB-148 236.99 059 0.09 0.39 457 U 24 232.27 232-15 0.50
1 ti I I CB-149 CB-148 248.96 0.68 0.12 1.27 17.09 15 737 241.74 232-IS 7.00 ~
200 4 ) 31_ 7 I)Ij B-150 CB-149 248.96 0.67 0.14 0.68 4.57 15 24 242.06 241.94 0.50 _ X
' 1 11 "1'I: ;1 % t i 'VA, ~f ~i% G~ 1 117' 7 0
7 , xa.l 1_.~ , ! i r 1 . \ ~ B I
! 1 tel: 1 A 7 5 !3 1 J 1 ! v ? 0 DENUDED AREA = 71.75 ACRES
16 s,0 ~J` ~ I i2 s 0 1 ~ TC ! r - "~Y t
! ~1 1 I t `
row I ~ v i ~ h. t r~ , r! i _ ) 4 aoo
DUST RBAO'CE
1>r0 \ ~ 3 ~ $ ~ ~ / r- 5 1 ~ _ ~ t. t t sac 42.C \ \ ME?- 0 RY
91 Y RvE o e ° 0°
I NOT APPRQV ,D 0 f1STRUCTI0 N <71 z
- _ ' n v crFR °
I 1 a O ( t \ I ~ ~ . ~ ! \ ~ t, A,., a~a0poooooaoooc^°°OOO°
v / 1 1
j 2$ 1 3, t t, ! 5 9_. 1 t 59
- - TE JP. DIVERSION GRAPHIC SCALE 20
-2-4 Z 1 1 J_ 21 c 6 ~y I CH (TYP.) w o si w
7 - - 1 inch = 60 ft.
/ i r. / i i, ~ t Ft >y
~4~0
1 f 'J r //f 'r /C
Z_ 3 CONSTRUCTION
ENTRANCE ~ \ ~I v
261, i
o t, ; 17
DI ION Y ; 7 /
'DI
V
r i
a b e .JILT EqC.~ ` % / / t ttt y
/i r
1 7, (0 j `V
SHEET 12
{ L''S:'. 2114 ` t 6'.. a~ 1"' t,"';''1 ' a / / j % r) l IkK,
!
E LINE SHEET 13, _ ! t
~ 9\
a _ B
VAU
o Date B Designer Scale No. Revision
W&R ' =6D LANGSTON RIDGE GRADING, ST01 STORM DRAINAGE, AND WITHERS RAVEN EL Sheet No.
Drawn By Date
$ CBD 111506 EROSION C
o Checked By lob No. ON CONTROL PLAN ENGINEERS I PLANNERS I SURVEYORS 12 711 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
w&R 2060090.0 Kni htdale Wake North Carolina Y

STORM DRAINAGE OUTLET PROTECTION SCHEDULE
AT OUTLET VELOCITY PIPE APRON DIMENSIONS RIP RAP STONE /
NUMBER V10 OUTLET WIDTH WIDTH LENGTH DEPTH TYPE SIZE, d50
Culvert 1 8.9 4 " P 3'-6. 10 -6" 21 -0" 24CLAS 1 24" - ,
NOTE: Provid fabric filter uh4erliner specified as Mirafi 140N or approved eP S ual - s'
2a TREE P 2,0' TREE P EC4TION EASEMENT,
F,
t ~PBASIN~
777 #15 SWALE DETAIL
\ \ "D tUERSION 1?}TC}4. r"
(tva}) 120 11_ N,S
2;; 1,21 120 12 123 Y FLOW i r s M ft /ft) I Q cfs V ft (/sec DEPTH (ft)
) i SWALE A 0636 1.5 3.83 0.85 TEMPORARY
` , 24
LL.I ' LLJ TEMPORARY LINER SHALL BE JUTE MATTING OR APPROVED EQUAL
LLJ
t i j
#2 _ +
5 v 0 , i
PASSI VE RECREA TION ~e-
, AREA OWNED BY NOA 1 ~ ~ r w
~1 98
902,738 SQ FT (20.72 Ac.) 126 4 2fl 1, I f
133
Y Ir / f I yr r \ ~ %
t7
_ i - YYYYYY
i
0b
i 1 s 13 ,5" X19
LIMITS OF CA,142 re
DISTURBANCE J I
20' CITY OF m
RALEIGH
UTILITY EASEMENT a V i
II w
2. TOWN CERTIFICATION. This design has bee reviewed by the Engineer ~or the Town -,2~pU of Knightdale, and to the best of my knowledge and belie it conforms to the 208, t- _ z
requirements established in the Standard SpeTcations of e Town of Knightdale.
By: Date: I I I A
Town Engineer ( I ; t 1 T l
E~ 1I i ~r~s- az lr These plans are approved by the Town of Knight ale and serv as construcfon SILT FEMC
~aq plans for this project. (TYPICAL)
- DENUDED AREA = 71.75 ACRES
By: Date Administrator 1J 9 g t
r.
I I ~
~22
i
v UTILITY INSTALLATIONS AND OTHER PUBLIC
FACILITIES, INCLUDING SIDEWALKS AND
\ HANDICAP RAMPS ARE TO BE CONSTRUCTED 1 \ \ \ _ ON ALL STREETS AS SPECIFIED BY CITY CODE.
~ I ~ ck ~.EVE ~ I THESE FACILITIES HAVE BEEN APPROVED BY
SPREADER ~ X11 2~ 1. v THE CITY OF RALEIGH AND SHALL BE SO ov ~j = \ INSTALLED UNLESS A CHANGE IS AUTHORIZED
I V I V d 22, 13Y WRITTEN APPROVAL. PUBLIC SANITARY
1 ~ I I , ~ I ~ ll \ SEWER EASEMENTS ARE TO BE RECORDED
\20' A~CESS~ - W Lu PRIOR TO FINAL ACCEPTANCE.
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MAINTAINANCE TRANSPORTATION SERVICES ' r
EY~SEMEt~T 4 v PUBUC UTILITIES
(TY ICAQv 212 IMPERVIOUS SURFACE CALCULATIONS 84
221 _ 220 ,
TOTAL AREA: 98.71 AC A V CONSERVATION ENGINEER %
28% (MAX ALLOWABLE IMPERVIOUS): 27.64 AC = 1,203,946 \
IMPERVIOUS AREA IN PROPOSED ROADWAYS: 402,799 Sl~ 1 1 ` 7.7
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IMPERVIOUS AREA IN RECREATION AREA: 65,000 SF A % CB ~ r
REMAINING IMPERVIOUS AREA FOR LOTS: 736,147 S`? \ ?
MAX IMPERVIOUS AREA FOR V Q ~213
EACH LOT (736,147/224): 3,286 SF I f t \ ~ ` ~ ~ V A - ~ ~ ~ V ~ ~ ~°r~tk~t,nn;rr•4CS,alt>wR~td Cif*nlPakfi
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" EROSION CONTROL LEGEND I ( ~ MAINTAINANCE ~w FILTER BASIN (nP CI AL) ~N E. °0pooaaooooo°0040
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r TEMPORARY DIVERSION
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TEMPORARY SILT FENCE ITT,
LIMITS 0-, 51
RIP RAP CHANNEL/DISSIPATOR DISTURBANC~~~~~ g U Lu
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PERMANENT SWALE PINING -,DIVERSION, DITCH.v
T2 \ Q J x
TEMPORARY SWALE//IJNING~ (typical} GRAPHIC SCALE
60 0 30 60 120
m GRAVEL CONSTR!)CTION EN ANCE
BASIN #17~ t inch = 60 ft.
N ! INLET PROTECTION PASSIVE RECREATION \ \ v J
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A OICCD ADCA ITIA/AICI1 QV LI/lA - / \
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902,7J8 SQ FT (20.72 Ac.) a~ #16
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° No. Revision o Date B Designer Scale GRADING J (`TO
m W&R 1° = 6D~ STORM DRAINAGE, AND WITHERS RAVEN EL Sheet No.
Cep Date 11506 LANGSTON RIDGE
g Drawn By
o Checked By fob No. EROSION C ON CONTROL PLAN ENGINEERS I PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com L
w&R 2060090.0 Eghtd Wake North Carolina Y