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Project: Project No.: REVISIONS CA I No. d
RIVERS EDGE APARTMENTS 6820.D I o~ ~ 6820.D I
~V. ~~scRiario~ DATE ASR. .•'~~9Slp . y-'•. ~ Prod. Mgr.: Drawn: :.e~ ti STORMWATER MANAGEMENT PLAN jr.: Drawn: Jrr
~ : , • • RSP NMM AL (~~~U. a~ S Location: Client: Scale: P NMM
~Qn~~~ of n~i SPRING 03126 ~ ~ SCALE
F 846- CUM6ERLAND Co., NC PROPERTIES COMPANY, INC NO SCALE ~ L 6 : ~ ; 11010 Raven Ridge Road Raleigh, North Carolina 27614 Phone: [phone] ax. (919) 9467
•,~e IN~~..~ 0: Sheet Tale: Sheet No.: . F ' www.SandEC.com qo..
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5. STORM WATER BMP LOCATIONS ~ ELEVATIONS ARE APPROXIMATE AND MAY BE ~ ~ ~ o ~ ~ ~
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File: SecUobs4-6k\6820.DISD2~Drawin s\5tormwater Construction Drawin S.CIW
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EXISTING O
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~ DRAINAGE AREA
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rn ~ PRETREATMENT AREAS ~ WITf1 11DPE BARREL, SEE DETAIL /
1 1 ; r 8" GRAVEL 511EET FOR DIMENSIONS AND
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Z i ENGINEERING OF FAYETTEVILLE, NC.
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I, ' 2. WETLAND DELINEATION PERFORMED BY OTHERS. ALL LOCATIONS ARE
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STREAM ~ WETLAND RESTORATION CONSTRUCTION DOCUMENTS FOR
z FURTHER DETAILS.
4. PROPOSED SITE CONDITIONS INCLUDING THE LOCATION, DIMENSION, AND
EXTENT OF STRUCTURES, ROADS> PARKING, AND OTh1ER WFRASTRUCTURE ARE ARE
APPOXIMATE AND MAY BE MODIFIED BY SITE DESIGNER DURING FINAL DESIGN. ~N.
rn 5. STORM WATER BMP LOCATIONS ~ ELEVATIONS ARE APPROXIMATE AND MAY BE BE
~ ~ ~ ADJUSTED BY ENGINEER AT THE TIME OF CONSTRUCTION BASED ON SITE
CONDITIONS.
6. THE PROPOSED STORM WATER MANAGEMENT PLAN ASSUMES Tt1AT SITE
GRADING AND STORM WATER DRAINAGE SYSTEMS WILL CONVEY SURFACE
RUNOFF FROM CONTRIBUTING WATERSHEDS A, B, AND C TO THEIR
RESPECTIVE STORM WATER BMP'S.
re~wsioNS Project: Project No.: ~N caRp~ 6820. D I No.
~~.~~5.., 9 ~ RIVER'S EDGE APARTMENTS Prod. Mgr.: Drawn: G(520. D I gr.: Drawn:
,aQ9 AL 9.. , ~ ~ STORM WATER MANAGEMENT PLAN ~P NMM
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.26~ Soil & Environmental Consultants, PA Location: Client: SPRING IAKE s~aie: 40'
p'~., ~L1,~0 ' a;' 11010 Raven Ridge Road Raleigh, North Cazoiina 27614 Phone: [phone] Fac: [phone] CUMBERIAND CO., NC PROPERTIES COMPANY, INC I ° 4~~ ~ :F o Sheet Title: Sheet No.: No..
@ .GINE.r www.SandEC.com
'~~cq s Ptit~~' PROPOSED SITE CONDITIONS 4 OF 14 3F 14
~ St1EET A - BIORETENTION AREA

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PARKING WETLAND EXACT PIPE LENGTH AND ~ ` ' ` ~ SCALE I " = 40' Q ~ ~ ~ o ~
SLOPE TO BE DETERMINED ~ 7 ~ ~ ~ ) , PROPOSED AT TIME OF CONSTRUCTION ~
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APARTMENTS ~ RESTORED WETLAND ~ ~ ~ - ~ 1' ^ ` PR PARKING ~ RIPRAP-LINED ~ , ~ _ % RI PRAP OUTLET 40 20 0 40 ~ ~ ~ ct~ ~ I,
PROTECTION APRON ~ w ~ o i--
EMERGENCY CONCRETE RISER STRUCTURE ~ Q o I'~,
WITh N DPE BARREL, SEE DETAIL w ~ z ~ ~ ~
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PROPOSED RESTORED ~ CREATED WETLAND St1EET FOR DIMENSIONS AND ~ ~ ~ o ~ ~
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MINIMU MINIMUM STORM WATER WETLAND
SURFA NOTES: SURFACE AREA = 2 I , 130 FT2 ~
- - _ _ _
SITE DATA INCLUDING PROPERTY BOUNDARIES, EXISTING FACILITIES, - a, - - - _ _
STRUCTURES, UTILITIES, AND TOPOGRAPHIC DATA PROVIDED BY BENNETT ~1
ENGINEERING OF FAYETTEVILLE, NC. ~ t!~
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FURTHER DETAILS.
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File: SecUob54-6k\6820.D 14D2~Drawm sU`'tormwater Construction Drawm s.dw
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~ I . SITE DATA INCLUDING PROPERTY BOUNDARIES, EXISTING FACILITIES,
rn STRUCTURES, UTILITIES, AND TOPOGRAPHIC DATA PROVIDED BY BENNETT
ENGINEERING OF FAYETTEVILLE, NC.
2. WETLAND DELINEATION PERFORMED BY OTHERS. ALL LOCATIONS ARE
r. APPROXIMATE.
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0 3. STREAM AND WETLAND RESTORATION/CREATION DESIGNED BY SPEC. SEE
STREAM ~ WETLAND RESTORATION CONSTRUCTION DOCUMENTS FOR
v FURTt1ER DETAILS.
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N 4. PROP05ED SITE CONDITIONS INCLUDING THE LOCATION, DIMEN510N> AND
D NORTH EXTENT OF STRUCTURES, ROADS, PARKING, AND OTHER INFRASTRUCTURE ARE
APPOXIMATE AND MAY BE MODIFIED BY SITE DESIGNER DURING FINAL DESIGN.
z SCALE I " = 30'
S 5. STORMWATER BMP LOCATIONS ~ ELEVATIONS ARE APPROXIMATE AND MAY BE
30 15 O 30 ADJUSTED BY ENGINEER AT THE TIME OF CONSTRUCTION BASED ON SITE
co CONDITIONS. N
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c`o 6. THE PROPOSED STORMWATER MANAGEMENT PLAN ASSUMES TI1AT SITE
~ GRADING AND STORM WATER DRAINAGE SYSTEMS WILL CONVEY SURFACE
RUNOFF FROM CONTRIBUTING WATERSHEDS A, B, AND C TO THEIR
RESPECTIVE STORM WATER BMP'S.
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rn 12" I1DPE TO STREAM
EXACT PIPE LENGTH AND
Q SLOPE TO BE DETERMINED
AT TIME OF CONSTRUCTION

CURB CUTS TO BIORETENTION
PRETREATMENT AREAS -
CONCRETE RISER STRUCTURE 8" GRAVEL ~
3' GRASS
WITH HDPE BARREL, SEE DETAIL
O SHEET FOR DIMENSIONS AND
CREST AND INVERT ELEVATIONS
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UNDERDRAIN SYSTEM, /
SEE DETAIL SHEETS /
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SURFACE AREA = 4,821 FTz / /
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APPROXIMATE DRAINAGE " / -
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EXISTING POOL
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EXISTING D
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---I PROPERTY BOUNDARY PARKING
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PROP05ED RESTORED ~ CREATED WETLAND
STREAM CHANNEL
EXISTING ~ E;(~STING WETLAND
PROPOSED ROADS ?
~ APPROXIMATE
STORM WATER BMP
DRAINAGE AREA
re~v~s~oNS ~ Project: Project No.:
~^..~<iti RIVER'S EDGE APARTMENTS 6820.D I
~~~'FE55ip+. ~ Prod. Mgr.: Drawn: ~ ti . ~ ~ STORMWATER MANAGEMENT PLAN ~P NMM
EAL r ` 5 Soil Environmental Consultants PA
O 1266 ~ Location: Client: SPRING LAKE Scale:
~o~~-., ~jLt/6~:'s: IIOIORavenRidgeRoad Raleigh, North Carolina 27614 Phone: [phone] Fa~c: [phone] CUMBERIANDCO., NC PROPERTIES COMPANY, INC = 30~
"~~d 'F GINti~'~ h~:'~ www.SandEC.com Sheet Title: Sheet No.:
'-~~cq5 Pti~~~ PROPOSED SITE CONDITIONS 6 OF 14
SHEET C - BIORETENTION AREA

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CONSTRUCTION SEQUENCE: ~ c~ ~ N
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I . Obtain NCDENR-DWQ, USACE, ~ local authority approval for construction. I I . Install primary primary spillway system. Install anti-seepage collar and seepage ~ ~ ~
diaphragm sys m system. Call Des n En sneer for observation of construction of Q ~ ~
~ 9 9
2. Notify NCDENR (Land Quality Section) ten days prior to construction. seepage colle steel approval s col t ection s stem. Call Desi n En sneer for sub rade and reinf rcin ~ ~ ~ ~ Q
Y 9 g 9 o g ~ - ~
~ rovai before coverin or concrete lacement. No fill shall be laced o ~
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;ture installed without approval by Design Engineer. ~ ~ ~ z
3. Locate and mark existing utilities on site. or structure i 4. Install temporary sediment ~ erosion control measures, access roads, staging 12. Backfill aroun area, and temporary facilities. Install Silt fence around perimeter of work area. specified. ~o
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around primary spillway, construct/reconstruct embankment as o ° o~
:d.
All installed temporary sediment and erosion control measures will be
inspected weekly and after a mayor rainfall event 0.5 inches) by the 13. Excavate for e e for emer ency s illway and sediment forebay weir to dimensions and ~ 9 p
Contractor. Contractor to supplement site erosion control measures as depths as sh required by site conditions. Upon inspection, any necessary repairs will be weir as direct performed by the Contractor. as shown on plans. Install riprap in emergency spillway and forebay ~ w
directed b the Des n En sneer. ~ o Y g g
14. Redistribute s ibute stock pled to soil material on ad acent disturbed area, Do not ~ p p J a
5. Clear and grub m required areas for Stormwater BMP construction. place topsoil disturbed are 6. Remove and stockpile topsoil in areas to be excavated for Stormwater BMP with excelsor areas. Stockpile in areas as directed by Owner. Surround stockpile areas ~pso~l on mulched areas. Apply temporary seeding measures to ~ 0
~d areas as final grading is reached. Line surrounding perimeter slopes *y
;elsor matting regardless of slope. ~ N
with 2 rows of silt fence. 15. Perform planti prior to plante 7. Excavate for installation of Bioretention Areas and underdrain systems in and shrubs as ~ lantin in Stormwater BM>'"s as s ec~fied. En sneer to be notified
p 9 p 9
I i r ~z p ant ng obse vation to approve planting bed conditions. Install trees p
ubs as shown in the details and as directed b En sneer at time of
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Areas A and C. Perform bioretention area construction including underdram construction. coon. Distribute surface mulch la er in Bioretention Areas to de th Y p
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systems and grading of the adjacent areas. Install outlet structures and pipes shown on pla as directed by the Engineer at the time of construction and as based on site ~n plans. b
conditions. Engineer to approve underdram trenches and systems prior to 16. Remove silt f placement of bioretention fill media. Call Design Engineer (Soil ~ for the purpo Environmental Consultants, PA, (9 19) 846-5900) for excavation observation. measures. R 8. Install bioretention fill media materials as specified on plans. Do not compact 17. Coordinate fo fill media. Representativ 3 silt fencin and an other tem ora erosion control devices installed 9 Y p rY ~ o
purposes of b~oretention area construction. Apply permanent seeding ~
;s. Remove temporary sediment ~ erosion control measures.
gate for walk-thru ins ection with Owner, En sneer, and A ency p 9 9
~ntatives.
9. Excavate forebay and permanent open water pool for Stormwater Wetland in
o Area B as shown on plans. Construct embankment to elevations and slopes
~ ~ (n
shown. Adjust grading as directed by Design Engineer at the time of
construction.
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10. Excavate for installation of primary spillway and seepage control system to Q 0
g dimensions and depths indicated on plans. N
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CONSTRUCTION S 0 2008 Sod ~ Environmental Consultants, PA. All ri hts reserved. w
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EXISTING GROUND SURFACE ELEVATIONS AT BIORETENTION AREA (BRA) LOCATION WERE ASSUMED AND
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ARE APPROXIMATE PENDING Tt1E COMPLETION OF A PROPOSED GRADING PLAN (BY OTt1ERS). BIORETENTION FILL MEDIA w z g~ Q
~ w z° w
~ ~ ~ o
2. ALL ELEMENTS 5110WN ON TABLE ARE RELATIVE TO ESTABLISt1ED GROUND SURFACE. ALL ELEVATIONS 85-88% LOAMY SAND Q ~ W
8- 12% FINES (SILT +CLAY) p.. d ~ ~
SHALL BE ADJUSTED BY ENGINEER AS NECESSARY BASED ON FINAL GRADING PLAN AND SITE CONDITIONS. dz 3-5% ORGANIC SOURCE W d~ o z
P-INDEX BETWEEN 10-30 p~ u U 0
3. TI1E LOCATION AND DIMENSIONS OF SELECT COMPONENTS INCLUDING MEDIA THICKNESS, PIPE DIAMETER, W W z ~ Z
MEDIA TO BE APPROVED BY ~ d o w
UNDERDRAIN SYSTEM, ETC., MAY BE ADJUSTED BY THE ENGINEER AT TIME OF CONSTRUCTION.
ENGINEER PRIOR TO w ~ ° ~ ~
INSTALLATION. ~ ~ ~ ~ ~ ~
0 m i
o
a. c17 ° ~ cn
CLEAN-OUT I' ABOVE t1ARDWOOD 3" THICK TRIPLE- PRECAST BOX COVER
MULCH ELEVATION (EACH SHREDED ORGANIC HARDWOOD 2" TI11CK REINFORCED ~y
UNDERDRAIN PIPE SHALL HAVE A MULCH COVER CONCRETE SET ON UNDERDRAIN ~ w
CLEAN-OUT) WITH SECURE CORNER BLOCKS TO ~ ~ CLEAN-OUT (TYP.) ~ ,
REMOVABLE CAP. STEEL BAND ALLOW FOR 6" CLEARANCE
MARKER INDICATING SEDIMENT
. ~ . V9~
CLEAN-OUT DEPTH TO BE PIACED TEMPORARY 6~~
2" ABOVE BKA MULCfi SURFACE. PONDING DEPTH, . ~ UNDERDRAIN PIPE
9 INCITES PI
PIPE TO BE INSTALLED ~ ~ ~ ~ ~ ~ . ~ ~ C~'P.) SEE DETAIL.
3N i 3h 0.5% MINIMUM FOR ~ , . ` . : ~ : ~ ~ ' ~ ~ ~ ~ ~ ~ ~ a
\\\~I V ninininnin i iininiii iiiiiinninininnnin ininnnii inEiiiiinniiniiiinnniiiiu ii iiinninniii I V~-\% POSITIVE DRAINAGE ~ . ~ , ~ ~•I .
o
APP I ~
ROX MATE ~
STABILIZE PERIMETER ~ SQUARE PRECAST . ~ , ~ ~ ~ ~ BIORETENTION AREA ~
. ~ ~ . ~ PERIMETER VARIES, ~ ~
. , , ~ SEE TABLE FOR MIN. ~y z
EXCELSOOR MAlTIN6 ~ CONCRETE BOX ~j - ~ RISER, SEE TABLE
. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ SURFACE AREA. ~ ~ . ~

BIORETENTION ~ J ' ~ ~ . ~ ~ ~ ~ ~ : ~ ~ ~ ~ ~
3' THICK BIORETENTION \ ~ ~ ~ ~ ' _ TO ADJACENT S AREA MEDIUM, SEE i~~/~~%/~~' s.~,,,+, r 4,, STREAM SPECIFICATIONS. ' \y SOIL MEDIA WITI1 ~ ~ ~ . ~ ~ . ~ . ~
MULCH COVER ~ ~ ~ ~ , ~ ~ : . ~ o
~ ~ ~ . ~ ~ PRECAST ~
UNDERDRAIN SYSTEM, 2 EACH CPP OUTLET PIPE
. , : : ~ , ~ ~ , , STRUCTURE ~ a
PEfZFORATED CPP ENCASED IN WSTALLED AT 0.5% ~ ~ ~I p
WASHED STONE AND NONWOVEN OVER EXCAVATE TO FIRM SLOPE MINIMUM FOR O
GEOTEXTILE WRAP. ALL JOINTS FOUNDATION LAYER AS POSITIVE DRAINAGE, il/,~
TO BE COUPLED AND SECURED WITH DIRECTED BY ENGINEER SEE TABLE.
DUCT TAPE. SEE UNDERDRAIN DETAIL. AT TIME OF CONSTRUCTION
SOLID PIPE TO BE UTILIZED AT
CONNECTION TO RISER. r
BIORETENTION AREA (TYP.) BIO~ETENTION AREA -TYPICAL PLAN 1/IEW
3 (NOT TO SCALE) (NOT TO SCALE)
3
D ~P Nash.,
:Q:~ d~i~~~:
BIORETENTION AREA DIMENSIONS C''Z: . U ~`''C~: N:
s pT~ ~ `t ;
Temporary Bioretention Est. 5urroundmg Bioretention Riser Wier Underdram Pipe Number of Minimum Riser imum Riser Riser Invert/ Barrel D/S Invert Barrel Pipe Approx. Barrel °~d,., ~ ~
Ponding Depth Surface Area .Ground Elev. Surface Elev. Crest Elev. Diameter Underdrain Dimensions men5ion5 Barrel U/S Invert Elev. Diameter Length
E (Ft.) (Sa. Ft.) (Ft.) (Ft.) (Ft.) (In.) Pipes (Ft. x Ft.) -t. x Ft.) Elev. (Ft.) (Ft.) (In.) (Ft.) a
F
0
3 Area A 0.75 9>374 15 I .25 150 150.75 6.0 2 3.0 x 3.0 .0 x 3.0 146.25 145.25 24 218
s N
D N z
0 N
o Area C 0.75 4,82 I 167.25 166 166.75 6.0 2 2.0 x 2.0 N .0 x 2.0 162.25 160.00 12 48
U
BIOf~ETENTION AREA 0 2008 Soil ~ Enwronmental Consultants, PA. All ri hts reserved. w> K

~~Z 3 . O p p
N
CD 6' IL ~ z ~
EROSION CONTROL MATTING, ~ ~ ~ vQ a ~
0 0 ~ a~ ~
MIN. 12" FABRIC ANCf10R IN TRENCH AT BOTf1 ~ ~ ~ N
OVERLAP INVERT OF #57 OR #67 BIORETENTION TOP AND BOTTOM EDGES z z
g -
WASHED STONE AREA EXCAVATION ~
w z g~ Jd w ~p dw
3' BOTI1 ~ w ~ W o~
3" MIN. ' U DIRECTIONS DIRECTIONS I"MIN. d ~ d0
N0. I I ~ d ~ w~
d z oCi-- GAUGE d ~ ~ dz
~ ~ ~ CPP UNDERDIZAIN PIPE, ~ STEEL C7 ~ ~ ~ z~
EXISTING SOILS ~ CORRUGATED EXTERIOR, o~ 0
~l SMOOTH INTERIOR, WIRE STAPLES ~ \ w~ z ~z
Q PERFORATED, EREOSION CONTROL
C DIAM. VARIES, SEE TABLE. MATTING
~ 1, ,,l/ ~ , C~~ MIN . - a./ o ~ pw

c,_? 4 OZ. NONWOVEN i ~
/ / ~ \ GEOTEXTILE FABRIC ~ \
~ ~ ~~ENCASEMENT
2" MIN. - ~ ~ ;Lam. ~ ~ \ \ ~
1
w
Min. 18" WI ~E STAPLE DETAIL ~ .
~o
(NOT TO SCALE) ~
BIORETENTION AREA UNDERDRAIN -TYPICAL EROSION CONTROL MA CROSS SECTION (NOT _ MATTI NG ANCN0~1 NG DETAIL ~
o
(NOT TO SCALE) ~ a
(NOT TO SCALE)
~ U
N v
~ """Wddd
0
,U~
o
`M~,, ~
I
STEEL POST
MIN. 12-I/2 GAUGE w ~
INTERMEDIATE WIRES ~o
~ 8' MAX.
MIN. I O GAUGE WOVEN WIRE FABRIC ~ ~
LINE WIRES
SILT FENCE FABRIC Q o
V~ "
3•
2' 2'
GRADE

i
4 2~ \ o \ \'i ' ~
j 6 MIN. COVER
OVER SKIRT ~ N°~~'
~ v lpoP~' .
:d:~ QNa
\~~j\~j ANCNOR SKIRT AS W m~~ ~
DIRECTED BY ENGINEER/
DESIGNER ~ ,
v % \ ~
FRONT VIEW SI 3 51DE VIEW o
o STANDARD TEMPORARY SILT FENCE D 0 ~E DETAIL z 0
~Z
0
(NOT TO SCALE)
0
BIOI~ETENTION AREA DETAi LS I I ~ E 0 2008 Soil ~ Environmental Consultants, PA. All ri hta reserved. w

o ~ z z d-
.oo ~ o N 0 IL
~ ~ L
~ a, . ~ a~ ~ ~
4 ~ ~
NORMAL POOL
ELEVATION = 155.00' TOP OF DA CONTROLLED BY D.I.P. W/ MIN. 4•• DRAWDOWN ORIFICE, OP OF DAM, ELEV. = 158.00' z ~ z
MIN. 4 LAYER TOPSOIL ~ ~ ~ Q_
z ~ g~ m J
DIAM. = 2" OUTLET CONTROL STRUCTURE,
w w ~o ~Q
APPROX. STORMWATER / TRASK RACK, WEIR CREST CAST wi~TH 6' ~U ~W
WETLAND DEEP POOL ELEV. = 156.00'
ZONE, POND INVERT, Q CJ z
LEV. = 152.00' LL Q w Q~
~ ~ _ ~ wU
3h sh _ _ _ _PRE-CAST CONCRETE FLARED-END U ~ v ~
IV IV SECTION, SEE DETAIL 511EET ~ W Z w~ ~
Iv ~ 0
o
INVERT OUTLET, w ~ z ~
~g ~ I, ELEV. - 153.00' v ~ ~ ° ~ ~ ~0 ~
°:a,'x. o F--

~ ~ ~ a. ~ i
r ~
''i UPSTREAM
ARREL INVERT, ++~~h _
D.I.P. MAINTENANCE VALVE, ELEV. = 153.50' y! ~ u r, T ~
ELEV. = 153.50' w
'/JOINT SEEPAGE DIAPIIRACM, ~ o
UNDERCUT AS DIRECTED REINFORCED CONCRETE PIPE W/ JOINT ANC110R SEE DETAIL Sf1EET
- BY ENGINEER AT TIME CAST-IN-PLACE REWFORCED CONCRETE GASKETS ~ GEOTEXTILE WRAP. ANCHOR ANTI-FLOATATION ANCHOR SLAB, BOTTOM IN UNREINFORCED CAST-IN-PLACE
OF CONSTRUCTION BASED ELEV. = 152.00' (SLAB TO BE 9.5' X 9.5' X 2' Tf11CK) CONCRETE CRADLE, 30" PIPE DIAM. CE _ _ _ _ _ _ _ ~~Vyy~
ON SITE CONDITIONS. IAM. iN ° ~I
0
w
WETLAND OUTLET CONTROL STRUCTURE ~ EMBANKMENT ~IENT ELEVATION TY~. ~ ~ ~~o
U
N 'd
(NOT TO SCALE) ~ 'G
G
U ~ ~
z
p
~ ''y
5' (TYP.) Q~
2' (1YP.) WEIR DEPTH= 2'
d~ a
Gl~ "
Stormwater Wetland Distribution Table ~ 3 Percent of 311 (TYP.) ~
Wetland Zone Sw Area Area (ft2) Zone Depth (ft) Invert Elev. (ft) IV O .
Forebays 10% 2, I f 3 2.0 153.00 / j~% i~- ! % ~ ~ / ' ~
Dee Pools I O% 2, I 13 I .5 - 3.0 153.50 - 152 ~ ~ ~ ~ 0 0 0 0 ~
4 Shallow Water 40% 8,452 0.25 - 0.50 154.75 - 154.50 / ~ Shallow Land 40% 8,452 I 155 4" NCDOT #57 STONE ~ ~ ~ 12" CLASS B
. \ ~ ~ ~
~ ~ i \ ~ \ r RIPRAP No-., IE i~f/ ~ ~ ~ .S.
o CUSf110N LAYER
o Total: 100% 2 I, I 30 q : cn Q cv~ z
0 OZ. NON-WOVEN CEOTEXTILE, s~;~ ~ ~
0 BURRY EDGES 12" (MIN.) AS ShOWN :.;~~o,~, N ~ .
V
NOTE: The in-situ soil at the deep pool invert elevations will be evaluated to determine
E if it is at least 6 inches below the seasonally low water table. If it is not (as
~ determined by the designer at the time of construction), a clay liner wild be WETLA
installed (DWQ BMP Manual 9/07 pg 9-2). /ETLAN D FO~EBAY WEI ~ DETAI L
s N (NOT TO SCALE)
D N z I 0
D N ~ z
O N ~ ~
V
w
7 I
ii
STOI~MWATEI~ WETLAND FOI~EBAY ~ N o 2008 Soil ~ Environmental Consultants, PA. All ri hts reserved. K I i

p ~ z ~
~~Q 0 IL
N ~
0
V ~ to ~ (L/ N Q ~
FIT WITH 30" HEIGHT UNDERFLOW 0. a to U~
TYPE CMP TRASt1 RACK WITH ANTI- z U
2'-6" 90 DEG. BEND Q ~
RISER CREST ELEV. VORTEX DEVICE BY CONTECti BOTTOM II 11 BOTI1 ENDS ~ ~c ~
ANCHOR STRAPS (4 TOTAU, 156.00 OF RACK 6" BELOW NORMAL POOL
PLACED AT EQUAL SPACINGS, SUBMIT SHOP DRAWINGS TO RISER MAY BE ONE UNIT ~ A w z g~ oQ
SEE DETAIL DESIGN ENGINEER FOR APPROVAL OR MULTIPLE SECTIONS ~ W z~ Q W
PROVIDE ANCHOR STRAPS ~ w N~ w~
~ d ~ ~ w RAM NECK JOINT SEALANT 2 6 90 DEG. BEND a. z ~
CAST-IN-PLACE CONCRETE
ANCt10R BLOCK BOTI1 ENDS W d ~ o ~ U
PLACE CUT END OF PIPE ~ ~~8~~ ~ ~ U ~ d
TO EXTEND MIN. 6•• PIPE SHOULD BE FLUSH p ~ ~ ~ ~
OVER TOP OF BARREL WITI1 INSIDE OF RISER ~ ~ o ~N
6" Min.
- d ~ O~
2'-6" 90 DEG. BEND W ~ ~
6" .e BOTM ENDS ~ g ~ o~ ~
3" MIN. - ' ----f ~I-~-- 5'-0" --?I ~ ~ ~
ll'P. nCu ~ ~ U ~ ~ fL. ~ ~ U to
r
#5 ••B•• @ 12••
ALL SIDES R/F BAR, CONFIGURATIpNS
- ~ ~ ~ H1
- a ~6~~
ALL SIDES
B UPSTREAM B ~w
BARREL INVERT CONCRETE 4000 PSI CONSTRUCTION JOINT ~
I' MIN. ~ ~ 153.50' @ 28 DAYS CLEAN BASE SURFACE
RISER BASE TO NEAT PORTLAND CEMENT GROUT
I' MIN. 5 ~ BARRELENVER #5 STR. @ 12" REL INVERT PLACE RISER IN WET GROUT ~
SLOPE FOR
BOTH DIRECTIONS AND SLOPE F POSITIVE DRAI RISER SIDE ELEVATION ITIVE DRAINAGE
#5 SRA. @ 12"
a
SECTION A-A -A ~ .
td
48-INCI1 DIAM. #5 "g" @ ~ 2" ~z
12° BASE R/F PLAN p ~
PRE-CAST ~9 5 ALL SIDES rs
CONCRETE RISER 3" MIN. -
-~I .
Wa
NOT DIP GALVANIZED
~ STEEL PLATE: ~
3" W X 12" L X I /4" T 3~~ A3251 BOLTS,
ALL 4 SIDES OF RISER 11OT DIP ~
9.5 FT. a . ~ ~ ~ GALVANIZED (NDG) ~i o
a
CUT SECTION 30" DIAM. CAST PIPE SECTION W/ =CTION W/ d ~ Q
- SPI60T END EXTENDIN RCP, SPIGOT DOWNSTREAM - . EXTENDING a ~ ~ d .a .
.R ANCHOR 4" ~P ~ ~ ° 4
W/ JOINT GASKETS AND r . ; BEYOND RISER ANCf10 NONWOVEN GEOTEXTILE BLOCK TO ALLOW FOR .a
_LOW FOR ~ ~ ~ ~ ~ N d a .
" ~ r ARTICULATION
#5 "A" @ 12" a ; : ` ~ ~
All Sides ~ a a
. a ~ ~ ~ a ~ . PRECAST RISER ~ "N~-,
3 .Q 4 a . a.. , a SECTIONS :''P P~. , os~~
D 2" MIN., ~ .
TYP. .a ~ . a : o Q N~~;:.
RISER PLAN SECTION B-B :U:~ N-~~: N:
s
~I~E~ ANCNO~ STRAP DETAIL (I Nei DE OF ~I~E~,) Q
o OUTLET STRUCTURE CONSTRUCTION DETAILS (TYP.)
(NOT TO SCALE) o
3 (NOT TO SCALE)
9 N
O z 0
D N > z
O N ~ 0
u
y u~ 0
7

STOI~MWATEI~ WETLAND OUTLET S 0 2008 Soil ~ Environmental Consultants, PA. All ri hts reserved. w

i
c ~
o~z ~ -
.oo o N 0 lL
0 0 z~ „ ~ ~ z
CAST-I N-PLACE 0 o~~Q~CV ~ a~
REINFORCED CONCRETE PRE-CAST CONCRETE ~ a ~ ~
END OF DRAIN PIPE CRADLE, SEE DETAIL FLARED-END SECTION, Z u z UJ
SEEPAGE DIAPI1f2AGM NCDOT #57 SEE DETAIL 511EETS g ~z Q~
STONE, W/ NONWOVEN GEOTEXTILE z I- g~ wQ
WRAP, SEE SPECIFICATIONS W ~u
z
CAST-I N-PLACE o~G w ~ w ~ ~
Q ~ ~ g~
UNREINFORCED
A CONCRETE CP.P,DLE, ~ ~ ~ . A DRAIN PIPES FROM Q z ~ p W~
SEE DETAIL SEEPAGE DIAPHRAGM 12 MIN. 12" LONG D.I.P. ~ ~ ~ ~
PIPE SLEEVE p ~ ~ wz
w w z CAST-IN-PLACE ~ 4~-
CONCRETE ~ Q ° ~ W
~ ~:~q':± 12 MIN. w ~ z ~ ANCHOR BLOCK ~ °
r ~
o v ~ ~ cn ~ cn ° v ~
VARIOUS DIAM. RCP CAST-IN-PLACE PIPE PROTECTION ~
PIPE CULVERT, SEE TABLE 6" MIN. p
(NOT TO SCALE}
CONCRETE OUTLET
SECURELY TAPE FABRIC PROTECTION BLOCK ~Q
4" M252 PLASTIC DRAIN PIPE SMOOTIi INTERIOR, TO SOLID OUTLET PIPE SEE DETAIL w
CORRUGATED EXTERIOR, PERFORATED PIPE INSIDE •
SEEPAGE DIAPHRAGM, SOLID PIPE OUTSIDE END OF PERFORATIONS 'ly °c
DIAPFiRA6M, INSTALL AT SLOPE OF I % (MIN.) AS DIRECTED BY TI1E OF THE DRAIN PIPE 4" M252 PLASTIC DRAIN PIPE
ENGINEER AT TIME SMOOTH INTERIOR, CORRUGATED
OF CONSTRUCTION EXTERIOR, PERFOk,4TED PIPE INSIDE SEEPAGE DIAPHRAGM, SOLID PIPE
OUTSIDE DIAPHRAGM, INSTALL AT
o
SLOPE OF I % (MIN.) WITf1
WATER-TIGHT JOINTS AS DIRECTED BY ~t .
THE ENGINEER ~
~ U
FLARED END SECTION ~ SEEPAGE DIAPHRAGM PLAN (SECTION A-A) CMP
CMP CULVERT, ~
SEE DETAILS ~ ~
(NOT TO SCALE) s DIA AS DIRECTED BYTIIE DIAM. VARIES ~ ~
EQ. ~ z
EQ. AS DIRECTED BY ENGINEER
4" M252 PLASTIC DRAIN
PIPE, INSTALL AT SLOPE OF
°Io (MIIN.) SEE SECTION ~ o
ENGINEER AT TIME PRE-CAST CONCRETE A-A ~ B-B DETAILS w ~
2' MIN . ~
SEEPAGE DIAPHRAGM OF CONSTRUCTION FLARED-END SECTION,
NCDOT #57 STONE, W/ SEE DETAIL Sf1EETS
NONWOVEN GEOTEXTILE WRAP, ~ TBD ~ RCP CULVERT, VARIES i ~ +~r1 a
SEE SPECIFICATIONS BRING PIPE AROUND DIAM. = 30" FLARED END SECTION
- TO EMPTY INTO RIP RAP 2' MIN. ~ ° ,~j~.
~~i ~/f ~ ~~/f~ NCDOT #57
WRAP ALL JOINTS W/ 24••
.r ~ . , STONE
WIDE NONWOVEN ; J. , . ;;4 . I' MIN. NONWOVEN GEOTEXTILE,
B GEOTEXTILE, SECURELY ENCASEMENT COMPLETELY
TAPE IN PLACE, SEE ~j/ / ~~j ~ j j: _ / : ~~\j\~' j~' j... , , , / B CONTAINED, NCDOT #57
~ SPECIFICATION ~ . ' i j \ .
STONE NOT TO CONTACT SOIL
NOTE: ENGINEER/DESIGNER TO BE PRESENT
3 CAST-IN-PLACE 4" M252 PLASTIC DRAIN PIPE SMOOTH o UNREINFORCED INTERIOR, CORRUGATED EXTERIOR, PERFORATED DURING CONSTRUCTION OF SEEPAGE DIAPHRAGM Noss,,
~
o CONCRETE CRADLE, PIPE INSIDE SEEPAGE DIAPHRAGM, SOLID PIPE CAST-IN-PLACE
SEE SPECIFICATIONS OUTSIDE DIAPHRAGM, INSTALL AT SLOPE OF REINFORCED SEEPAGE DIAPHRAGM SECTI0~1 :.s.:~ o~:~._: U~,.
o I % (MIN.) WITH WATER-TIGfiT JOINTS CONCRETE CRADLE, ~~o ~d
~ SEE SPECIFICATIONS (NOT TO SCALE} ~
3 E Q
0 w
Q 0
FLARED END SECTION ~ SEEPAGE DIAPHRAGM SIDE ELEVATION (SECTION B-B)
3
g (NOT TO SCALE)
0 N z 4
0 N > z
0 N ~ ~
N U
~9 0
V
STOI~MWATE(~ WETLAND SEEPAGE C 0 2008 Soil # Environmental Consultants, PA. All ri hts reserved. K

o~~ ~ -
~z •~0 0 IL
ON L
z~ L ~ ~ z 0
v ~ N m a~ ~ ~ Q ~
0 0 ~ o~ -
c~ a N N
z ~
Q z
TURN UP EDGES OF ~ ~ Q N
EROSION CONTROL APRON, EXISTING W z g ~ ?-Q
EXTEND APRON TO TOP GROUND TOP OF ~ w z~ Qp
OF EXISTING GROUND 22.5 FT SURFACE DAM ELEV. ~ w ~ ~
= 158.00 ~ ~ z
26' ~ ~ o ~W
d Q ~
Z
I. EMERGENCY D ~ W z
SPILLWAY j ~ Q o
I O OZ. NONWOVEN ~ CU~SOION LAYS ONE o ELEV. = 157.00 ~ ~ ~ ~ ~ U ~
GEOTEXTILE, BURY EDGES ~~S I EROSION
12" (MIN.), AS SI10WN CONTROL STONE 6 IN. THICK \ %f CLASS I RIPRAP ~ ~ ~ o ~ ~ W
~ D D o ~o D ~ D D , j,!\~~ 0 o U~ N ~
LAYER, 22.5" TI11CK 6-INCH ~ ~ ~ \`\e~ I 0 OZ. NON-WOVEN ~ ~ ° ~ N
\~`~\\\\\,\.\\y~\ ~ GEOTEXTILE UNDERLAYMENT h
CROSS-SECTION (AT DOWNSTREAM END OF APRON) #5~ sroNe (NOT TO SCALE) CUSHION 20' BURY ENDS AS S110WN ~ ~
Qf
LAYER
h~
CROSS-SECTI -SECTION VIEW (TYP.) LOOKING DOWNSTREAM
w
(NOT TO SCALE) ~ •
~o
OUTLET
STRUCTURE TOP OF EMERGENCY SPILLWAY,
INVERT = 153.00' ELEV. = 157.00' FINISH AS cu~verzr F~n,Reo DESCRBED IN SPECIFICATIONS A\ TOP OF STORMWATER WETLAND ~
DNS EMBANKMENT, ELEV. = 158.00' ~y
Q Q END SECTION a
a ~ Oo a a GRADE UPSTREAM - GRADE DOWNSTREAM ~ o
SLOPE NOT STEEPER a
o Da SLOPE NOT STEEPER Tt1AN 1011: I V 'r"~
a~~ °C~;,~ a a o ~ THAN 5F1: I V D D D D D D O D D ~
atJ~ CJa~~/ ~ ~ ~ N U
c a
a ~ ~
22.5 FT ~~Cla a~ ~ N ~ > "~a 7.5 PT j
~
\'\i ~ z
o~
a a ~
a a
PROFILE VIEW (TYP.)
(NOT TO SCALE) ~ o
20.0 ~r W~
PLAN VIEW DETAIL (TYP.) RIPRAP- (NOT TO SCALE)
'SAP-LINED E E E Y PI A`~ ~ M ~G NC S LLW
a
CLASS I EROSION CONTROL STONE TEMPO LAYER, PLACE AT END AND ALONG
:MPORA~Y SEEDING SPECIFICATIONS
SIDES OF OUTLET STRUCTURE
20.0 PT - GENERAL SEEDING
RIPRAP ENERGY AREAS Wt1ERE NO SUBSTANTIAL OR SIGNIFI DISSIPATOR MADE FOR MORE Tt1AN 14 DAYS SHOULD B )R SIGNIFICANT PROGRESS IS SEEDING DATES SEEDING SPECIES RATE (LBSIACRE)
S110ULD BE TEMPORARILY MAY I -AUG. 15 GERMAN MILLET I 0
~ SHOULD BE SEEDED AND ~ ,
~ ° a l a ~ ° MU CHDEDS NOCIDEN AL GLRADRNG Sh1ALOLUN0 o ~~%~~STRUCTURE OUTLET SUBSTANTIAL OR SIGNIFICANT PROGRESS I ~ : ' \ ~~\~/,~~i~~~~~. ~ INVERT, ELEV. 1 53.00' SHALL NOT CONSTITUTE AUG. 15 - MAY I RYE (GRAIN) 30 :~\~aP..,~.,,,
OGRESS IN CONSTRUCTION a J
Y ~ " CL~P,~S f ~°IFrI~P;P~.AYER, NCDOT #57 ACTIVI-fY. SEEDING AND MULCHING SI1ALL PLACE RIPRAP APRON 22.5 IN. THICK FOLLOWING CONSTRUCTION. ALL DISTURBS :Q:~n ~N~ JG Sl1ALL BE DONE IMMEDIATELY U N:
S ':v- DISTURBED AREAS SHALL BE o ~?.~U°~,~
.S, TI1E TOP 3 INCHES Sf1ALL MAINTENANCE '•..°ti''
c4 AND CUSI110N LAYER STONE, CUSHION DRESSED TO A DEPTH OF 8 INCHES. Tt1E T TO CREATE SMOOTH NONWOVEN GEOTEXTILE, L/~YER, 6 IN. TI11CK BE PULVERIZED TO PROVIDE A UNIFORM SE TRANSITION TO BURY EDGE, 12" MINIMUM
IFORM SEEDBED.
INSPECT AND REPAIR MULCh FREQUENTLY. REFERTILIZE AND
EXISTWG WETLAND PROFILE VEW DETAIL (NP.) MULCH RESEED AS REQUIRED TO MAINTAIN VIGOROUS TEMPORARY `
VEGETATIVE COVER DURING CONSTRUCTION. P
(NOT TO SCALE) MULCHING SHALL CONSISTS OF SMALL GRA 9 A RATE OF 70 LBSJI000 SG. FT. NO ASPI ° FOR TACKING. USE JUTE, EXCELSIOR MATTI >MALL GRAIN STRAW APPLIED AT
. NO ASPHALT SHALL BE USED
~IOR MATTING OR SIMILAR o
;EAS OF CONCENTRATED FLOW. ~ a
OUTLET PROTECTION APRON MATERIAL TO COVER EXPOSED AREAS OF C N EMERGENCY SPILLWAY ~ TEM~ 0 2008 Soil ~ Environmental Consultants, PA. All ri hts reserved. U
O
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i
~ w
.O©z Q
o N U (l,_
z~~ ~°0 mo- ~ z
~Cf1EDULE ~ ~ ~~z ~ 0 0
z z ~
L h mm TREES - 18-FOOT SPACING MU C 80 (3 ) Q
AVG. THICKNESS. SPECIES COM ON NAME TOTAL # MINIMUM SIZE REM M REMARKS ~ ~ z ~
NON-BIODEGRADABLE
Taxodium distichum Bald cypress 5 2.5-in. dbh Placed randon MATERIAL SHALL BE aced randomly throughout ~ Z g g ~
~ , . ~ ~ ~ f ; ; ~ TOTALLY REMOVED. ~ W z~ z
\ Betula rn ra River birch 5 2.5-In. dbh Placed randon aced randomly throughout ~ W ~ W z
GENTLY COMPACTED Q ~ N,~ Q
TOPSOIL MIXTURE ~ ~ ~ ' Placed randon , ' ~ ~ ' ' Jurnperus virg~niana Eastern red cedar 5 2.5-In. dbh aced randomly throughout Q z a ~
TAMPED ADMIXTURE ; ti 7 W ~ w
~ f / ~ , , ; BAC KFI LL ~ , ~ ~
SHRUBS - I 0-FOOT SPACING
SPECIES COMMON NAME TOTAL # MINIMUM SIZE REM, CROWN OF ROOT BALL SHALL BE ~ ~ U ~ REMARKS SET SLIGHTLY ABOVE GRADE. ~ Q o ~
Viburnum dentatum Arrowwood viburnum 17 3 Gal. Placed randoi U laced randomly throughout w ~ o ~ ~
z
Myrica cerifera Wax myrtle 17 3 Gal. Placed randoi laced randomly throughout MULCH: (3") AVG. THICKNESS ~ ~ ~ o
~ Q~~n,Q
Placed randoi Ilex glabra Inkberry 17 3 Gal. laced randomly throughout ~ ~ ~ ~ N ~
PERENNIALS - I 0-FOOT SPACING IN AREAS OUTSIDE TREE ~ SHR :E ~ 511RUB CROWN) ~\r ~ ~ PREPARED ADMIXTURE
SPECIES COMMON NAME TOTAL # MINIMUM S?ZE REM, REMARKS \~/\\\l\~ / BACKFILL OR NATIVE SOIL h \j,~`\~i\\~\i~\\\~~~\\/f ~ ~ TAMPED ADMIXTURE BACKFILL t/j
Asclepias tuberosa Butterfly Weed 13 I Quart Placed randoi laced randomly throughout ~.i
laced randomly throughout ~
Echinacea purpurea Coneflower 13 I Quart Placed randoi
Pennisetum spp. Fountain grass 13 I Quart Placed randoi laced randomly throughout DECIDUOUS THEE PLANTING - CONTAINERIZED ~
~
TREES - 14-FOOT SPACING (NOT TO SCALE) ~
SPECIES COMMON NAME TOTAL # MINIMUM SIZE REMARKS
~Cf-1 EDU LE °
Nyssa biflora Swamp blackgum 36 2.5-In, dbh Shallow Land Zone V~
TREES - 18-FOOT SPACING Nyssa a~uatica Water tupelo 36 2.5-In, dbh Shallow Land Zone ~
SPECIES COMMON NAME TOTAL # MINIMUM SIZE REM. REMARKS ~
Taxodium distichum Bald cypress 36 2.5-In. dbh Shallow Land Zone Placed randon N V
Taxodium distichum Bald cypress I 0 2.5-In. dbh laced randomly throughout ~ ~ ~
Betula ni ra River birch I 0 2.5-In. dbh Placed rando SHRUBS ~ SMALL TREES - 7-FOOT SPACING g laced randomly throughout ~ ~
N NAME TOTAL # MINIMUM SIZE REMAR S SPECIES COMMO K , Eastern red cedar _ Placed rando Juniperus v rginiana I 0 2.5 In. dbh laced randomly throughout ~ ~ z
o~
Betula nigra River birch 106 I Gal. Shallow Land Zone ~ ~
SHRUBS - I 0-FOOT SPACING
Vaccinium crassifolium Creeping blueberry ! 06 I Gal. Shallow Land Zone SPECIES COMMON NAME TOTAL # MINIMUM SIZE REM REMARKS !~i
i~!
Magnolia virginica Sweetbay magnolia 106 I Gal. Shallow Land Zone Viburnum dentatum Placed rando Arrowwood viburnum 32 3 Gal. 'laced randomly throughout ~ ~
Sambucus canadensis Elderberry 106 I Gal. Shallow Land Zone m 3 Gal. Placed rando Myrna cerifera Wax yrtle 32 'laced randomly throughout TREE TAPE (3), AVOID TIGHT TAPING ~ ~
'laced randomly throughout AS IT PREVENTS NATURAL SWAY
Ilex glabra Inkberry 32 3 Gal. Placed rando HERBACEOUS - 6-FOOT SPACING o
- N NAME TOTAL # MINIMUM SIZE EMA S SPECIES COMMO R RK CROWN OF ROOT BALL SHALL BE ~ °
PERENNIALS - I 0-FOOT SPACING IN AREAS OUTSIDE TREE ~ SHR .E ~ ShRUB CROWN) SET SLIGHTLY ABOVE GRADE.
Carex spp. Sedges 128 4-In. Containers Shallow Land Zone
SPECIES COMMON NAME TOTAL # MINIMUM SIZE REM REMARKS
tl~biscus moscheutus Rose mallow 127 4-In. Containers Shallow Land Zone Ascle ias tuberosa Butterfl Weed 25 I Quart Placed rando MULCH: (3") AVG. THICKNESS 'laced randomly throughout
p Y
1lymenocallis eulae Spider lily 127 4-In. Containers Shallow Land Zone Echinacea ur urea Coneflower 25 I Quart Placed rando -~-~--STAKES (3) ~ ~
P p 'laced randomly throughout
~ ~ WIRE OR ROPES AT TOP OF BALL
uncus effusus Common rush 127 Shallow Land Zone J Bareroot Pennisetum s Fountain rass 25 I Quart Placed rando pp g 'laced randomly throughout ~ ~ , ~ ~ SHALL BE CUT. ~ , ~ ~ REMOVE TOP 113 OF BURLAP.
~ Lobelia siphilitica Blue lobelia ! 27 4-In. Containers Shallow Land Zone /1~,;~~//i /ice
, ~,f~\i PREPARED ADMIXTURE BACKFILL OR ~ ~ NATIVE SOIL 'N,.
3 EME GENT PLANTS R L \ TAMPED ADMIXTURE BACKFILL ;'~:,P~,,,~s~
E I MMON NAME TOTAL # MINIMUM SIZE EMA S NOTES: o SP C ES CO R RK
:U:~ Nm.~-.\
Iris vir irnca Blue fla iris I I Ed es of Shallow Water Zone g g Dormant rhizome g DECI DUOU~ THEE PLANTING - BALL ~ BURLAP -~.s~-~ ~
I . ALL DISTURBED AREAS TO BE 0
~ Saurunus cernuus Lizard tail I I Dormant rhizome Edges of Shallow Water Zone
L ~ PERMANENTLY SEEDED WITH (NOT TO SCALE) R
~ Pontederia cordata Pickerelweed t I Dormant rhizome Ed es of Shallow Water Zone SWITCHGRASS. a
y 9 0
Sagittaria logiloba Arrowhead I I Dormant rhizome Edges of Shallow Water Zone w Q 0
3
Acorus s Sweet fia I I Dormant rhizome Ed es of Shallow Water Zone o pp 9 9 N
z
Q 0 N
O N 0
CD U
CA w 0
i N
0
U
N
©2008 Soil ~ Environmental Consultants, PA. All r~ ht5 reserved. ~a