20110281 Ver 1_More Info Received_20110628

ENV
Environmental Consulting Services Inc.
June 27, 2011
Ms Sue Homewood
NC DENR DWQ
Winston Salem Regional Office
585 Waughtown St.
Winston Salem, NC 27107
RE: Sterling Carroll Nursery Project
Boone, Watauga County, NC
DWQ# 11-0281
Dear Sue:
3764 Rominger Road
Banner Elk, NC 28604
Ph: 828-297-6946
Fax: [phone]
e-mail: [e-mail]
'__ OW90
JUN 2 3 2011
The purpose of this letter is to address all remaining issues on this project. Thank you
for your phone call the other day explaining the determination that the adjacent parcel
to the east of the proposed nursery tract will not be considered as part of this project.
Enclosed are copies of signed and sealed plan sheets for the project showing the
proposed stormwater management measures we submitted with the PCN. Following
is a brief description of the response to all items mentioned in your letter of April 25,
2011.
The first comment in the April 25th letter addressed the adjacent property
issue. Based on our phone conversation this morning (6-27-11), 1 understand
that only runoff generated from the Nursery site needs to be treated in
accordance with the BMP manual. The attached plans show that the entire
developed area of the Nursery site is being treated in accordance with the
BMP manual. There is a small amount of off-site drainage that is also
included in the BMP design calculations, this area is shown on the plans and
accounted for in the BMP sizing calculations.
2. The second comment required that a P.E. sign all plan sheets. The attached
plans are all signed and sealed.
3. Comment #3 requested that revisions be made to the plans to show that the
proposed grass swales will meet all applicable requirements for conveyance
only swales in Chapter 14 of the BMP Manual. The attached Bioretention
Plan has been revised to more clearly show the location of all proposed
grass swales. There is a table and detail for these swales on the plan sheet
labeled Bioretention Details.
• Page 2
June 27, 2011
4. Comment #4 requests information regarding the drainage system proposed
for the access road across the adjacent parcel. While this is not part of the
regulated area of the Nursery project, we have shown a grass swale parallel
to the proposed access road that will collect all sheet flow runoff from the
access road and surrounding area. The grass swale has been designed in
accordance with the criteria for conveyance only swales in the BMP Manual.
5. In accordance with the condition included with the 404 permit, the
approximate 25-foot long section of 36-inch CMP will be removed and the
stream banks will be graded to match contours upstream and downstream of
the pipe. After the pipe is removed the banks will be seeded and matted.
If you have any questions regarding this information or need additional
information please call me at 828-297-6946, thank you.
Sincerely,
?C% _
J ZhnC.las
President, ENV Environmental Consulting Services Inc.
Cc: Sterling Carroll
Tasha McCormick
Annette Lucas
Mike Trew
ENV file
Sterling Carroll Nursery Project
Municipal Engineering 1-40 Services ` Compaay,P.A.
Offc, KG `?/ Abre/?d may; N.C
6oone, N.C
Project: Carroll Nursery Site
Client: Carroll Properties
Subject: Drainage Calculations
Determine Peak Flow for Drainage Area 1
Contributing Drainage Area Al
Use Time of Concentration
Intensity 125
Rational Coefficient C
Peak Flow: Q = CIA Q25
Determine Peak Flow for Drainage Area 2
Contributing Drainage Area A2
Use Time of Concentration
Intensity 125
Rational Coefficient C
Peak Flow: Q = CIA Q25
= 0.26 ac
5 min
8.59 iph
= 0.65
1.45 cfs
0.23 ac
5 min
= 8.59 iph
0.9
1.78 cfs
Project # 810024.3 _
Date: 1-Jun-11

Sheet# _
1
Des. By: AJC

Chk. By: _
MPT

Scale: _
n/a
Municipal U l1IJ Engineering
service.? f Compaoy,PAL
Gamer, N.C MO--madCly, ACC
Bowe, N.C.
Project: Carroll Nursery Site
Client: Carroll Properties
Subject: Drainage Calculations
Determine Peak Flow for Drainage Area 3
Contributing Drainage Area A3
Use Time of Concentration
Intensity 125
Rational Coefficient C
Peak Flow: Q = CIA Q25
Check Grass Swale #1
Q=1.45+1.78 +0.39=3.62 cfs
See Computer Calculation
Flow Depth = 0.93 ft
Free Board = 0.57ft
0.15 ac
5 min
8.59 iph
0.3
= 0.39 cfs
Determine Peak Flow for Drainage Area 4
Contributing Drainage Area A4 = 0.61 ac
Use Time of Concentration = 5 min
Intensity 125 = 8.59 iph
Rational Coefficient C = 0.3
Peak Flow: Q = CIA Q25 = 1.57 cfs
Check Grass Swale #2
Q = 1.57 cfs
See Computer Calculation
Flow Depth = 0.74 ft
Free Board = 0.76 ft
Project # B10024.3

Date: _
1-Jun-11

Sheet# _
2
Des. By: AJC _
Chk. By: MPT _
Scale: n/a
Municipal U ULI Engineering
Services Compnny, PA
Boone, N.C.
Project: Carroll Nursery Site
Client: Carroll Properties
Subject: Drainage Calculations
Determine Peak Flow for Drainage Area 5
Contributing Drainage Area As =
Use Time of Concentration =
Intensity 125 =
Rational Coefficient
Peak Flow: Q = CIA
Check Grass Swale #3
Q = 4.74 cfs
See Computer Calculation
Flow Depth =
Free Board =
1ft
0.5 ft
1.49 ac
5 min
8.59 iph
C = 0.37
Q25 = 4.74 cfs
Project # B10024.3

Date: _
1-Jun-11

Sheet# _
3

Des. By: _
AJC

Chk. By: _
MPT

Scale: _
n/a
HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period rs Velocdy (fps Area (sq.fl) Hydraulic
Radus Normal
De th ft
116 0.5 0.81 4.44 0.56 0.93
Unreinforced
S = 0.0100
LINTER RESULTS
1L \' ?1
Bottom
3.0 Width=200 ft 3.0
Not to Scale

Reach Matting Type
tabTityAnalysis Vegetation Characteristics
Permissible
Calculated
SafetyFador
Remarks
Staple Pattern Phase Class Type Densely Shear Stress
(pit) Shear Stress
(psfl
Straght Unreinforced Vegetation C Mix 75-95% 4.20 0.58 7.26 STABLE
Soil Sit Loam 0.035 0.002 15.53 STABLE
Back tolnpr I, S-n;
HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs elocky (fps) Area (sq ft) Hydraulic
Radusk Normal
epth ft
0.6 0.5 0.50 3.11 0.47 0.74
Unreinforced
S = 0.0100
LINER RESULTS
1L \ I1
Bolcom _f
3.0 Width = 200 ft 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase pass Type Densely Shear Stress
(pso Shear Stress
(pso
Straight Unreinforced Vegetation C Mix 75-95% 4.20 0.46 9.12 STABLE
Sol Silt Loam 0.035 0.001 3922 STABLE
Back to Inpr t Screen
HYDRAULIC RESULTS
Discharge
cfs Peak Flow,
Period hirs, elocity (fps Area (sgft) Hydraulic
Radius ft Normal
Depth ft
X4.7 0.5 0.93 5.04 O.6D 1.OD
Urueinforced
S = 0.0100
LINER RESULTS
1L I1
Bottom _J
3.0 Width = 200 ft 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Densty Shear Stress
(pso Shear Stress
Ipso
Straight Unreinforced Vegetation C Mix 75.95'/. 4.20 0.63 6.70 STABLE
Sod Silt Loam 0.035 0.003 11.86 STABLE
Back to'lnp R Ser-
~ _
L
GENERAL NOTES° ire in Cell imensions .:..::N
SPIKE IN POWERPOLE U
1. TOPOGRAPHIC SURVEY PREFORMED BY MUNICIPAL ENGINEERING ASSUMED ELEV= s SERVICES DBA SKYLINE SURVEYORS. 973.05 -1 - ...:......:..z
wp yy SPIKE IN POWERPOLE Lengthy 150' Lent 55' ~ ;-o
ao~s o ~2 2. ELEVATIONS ARE ASSUMED. SEE PLAN FOR TEMPORARY BENCH MARKS. 421 a a ARCME.CARRDLL RD. ,0.~ ~
m 3. BOUNDARY SURVEY PERFORMED BY AB CHRISTIE SURVEYORS DATED idth~ 1 ' ~ ~ _ ~ ~ N 0 idt 22 ~ Q
o rc 9 8107: w l1 Wf p:
f3 mf SITE 1 rea:139 sf reo .1,325 sf ~ / ~ W
^ m~ ' it 1
I - US 421 ex, el ~ ~ a ditch ~ p
}
t
r.
E NC BOON , ~o !r N
} aPPrax, toc'n E! ~ U
NTS VI INITY MAP. C U
_
/ , p~p
\ \ \ / / _ \
\ n
\ ~ ex. 36 cmp ~ \ \ 6 cmp ~ / ~ ~ o "
\ inv.=966.72 \ x66.72 ~ . % ~ a ~prox ioc'n~. eX, LP _ ~
/ \
\ \ / /~,e~/ .
\
ex. overhead / ~ approx. location 1 f ~ °
1 transmission line \ , / \ ex. 36 cmp t X89°39 3 E 301.62 \ \ • ~ ~ _ .y r. U
~ Yp) ~ \ _ / \ / / ` t \ \
`T .
\ ~ \ / \ .7 \ / P N RGY ~ ~ / f ~ ,"°"i' ex sep tfc cn ~ ~ N z
ex. stream ` \ \ <JIS~jPA/"' F.~ft / / ex; .;tank ~
f / / / , ion ~ ~ puMP ~ z' ~ / / y ~ tank ~ a: ~
~ r .~_µu.-.~ ~ °c ZN ,Q. r. / ~
~ 1 y ~ ~ ~ ~ ~ y ~ y ' ,j ex. trlbutar \ \ i Y r~ ~ 8 F~1;"CMP~ 30.9% / ` ~ ~'rn
~ ~ ~ ~ ~5 UNDJI;TURBIrD ~ y ~ ~ y , ~ \ GRASS L-INED SWALE #1 ~ ~ rn
TROUT BUFFER ~ ' ~ 1%TO EXISTIPIG f B ULDER ENERGY ~ ex, 30` rcp ~ °m
~ ~ ~ ~ @~ \ RIP-RAP ENERGY ~ WETLANDS \ ~ DISSIPATER ~ ' Q aj Toad Llon
\ ~ ~ DISSIPATER ,y li i o wetla s \ ~ (front Detention Pond> o Oj ~ QJ J '
\ \ , \ / \
> \ Q 1 Q / ~
~ ~
l~,_ . i> . ~ ~ ~ f i
30 V ETAT D ~ , ° . \ / ..___--i- r
BUFFER ~ ~ ~4 ~ ~ ~ ~ ~ y y y ~ ,~70
i ~ J ~ rox, toc'n Q GRASS LINED SWALE,~~'' aPP
68 LF 18" .NIP-@--25~AO 1 ` • @ 1%TO NEWARE/~INLET ex, spring box
~ o ~ ~ (TYP) ~
/ / f d t f /
~ y ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 980 ~ ,E
N ~ ~ ~ \ r r ` ~ ~ -
m ~ Y~. % U
f v . i ~ ~ . AI (NCDOT STD 840.45) ~ ~ ~„l,)
m ` TH OAT = 996.0 ~ ~ ~ x ° ~ _ PK -NAIL IN FDODLION ...I
,o ~ ~ / / I ERT-990.0 PARKING LOT ,r~ ~n - • ~ NORTHWEST ~ ~ E'"
~ 990 o / \ JB NCDOT STD \ B (NCDOT ST ...8-40.45 ~ ~ AB~,`IDON . ~ V 80' F~ ``,~p ° e~~ 12°' cmp DF MANHOLE
o ~ ~ / \ TOP = 997,0 _ ( N - 997.0 4 ~ .
~ \ 1WE = 987.4 \ N'dER 5:8"~ f ~ i~iv. out=976.44 ASSUMED ELEV-
~ I=: - \ / , o \ / o ~ LF ~ 15" CMP @ 2 0 /o ~r k " ~ ~ 998,34 ~ O
\ 80 ` U f ® i ~
\ ~ 12 CMP 2.0 /o ~ \ „ I / , P \ - ex. 6 "~hdpe ~n
K g.~ . ~ ~ Q I~ / mv.- 7Z. ~4 ~ ~ V W
- ~ OVERFLOWDEVICE 999.5- ~Q ,~g`~ ' . t 4. _ 999.0+ + ~ G ~p P~ / ~ 1000.0+ ~ooo.o+
r INrV~ERT 989.001 A ~R o05 0 _ ~ ' 1 AB NOON -~J E ` ~ e .storm drain and f'`' --a ~ ~a
~ ~ / UNDE DRAIN TIE-IN = 990.50 \ OVERFLOW DEVICE 56, J ~ NC f ~X Y ~b T STD 840.31
I \ _ 999 5• ~ - ~ ~ THROAT - 997.75 _ , G J ~ \ t 990+ 998.5+ \ - CUft CUT 999.0 ' '$o + C inlet / (.L ~ 0 sss,~•' ~ I ~ TOP ;1 $p;~5 1 throat=992.58 / z
~ / ~ / \ .__INVERT - 990.501 ~ IN~IERT~ 92.9 ~ „ ` /12 inv.=988.93
• q~ . ~ - 1lNDE DRAIN TIE=1N ~ 992:00-- . , ~ .__.f~ 9 9.0 m = GRA S & G AVEL ? ~ / CURB CUT 997.5 \ / s s.o GRASS SWA/LE ~ rt""
7 - Q \ PRET EAT ENT + ~ SHEET F OWS
G SS & GRAVEL \TOP j F STONE WIER = 997.60 of co \ \ + 99.5 ~ ~ _ P ETREATMENT 5' CONCRETE S DEWALK i Tt~ ~ ; I .p _ B~6RET~NTI©NQ r~ f ~
~ •e \ tv, +1000.0 +1000.25+ ~ TYP. CAPPED m
F p TOP~OF STONE WIER 99615. ~ / r~ Q ~ m ___,..0 999. rn , . . ...P~20E?OSED......''....'......... ~ J/, J/ ~ / ~ O ~~a FUTURE WAREHOUSE ~.J ~X ~ ~ OVE FL W D~ ~ /
_ / w .L_ Q -998.x+ 99.0+ STANDPIPE _ ~ ~ / \ r ..'......:...LANDSCAPING.&.NURSERY _ EVI E ~ ~ ~ o THR~A = 91,7 ~
;.!'l e ~ M~AINT,ENANCE ACCESS ~ (1 PER 1,000 SF.} A rn r INV~ T = `~~OSf
~ 1 i' o o 2400 SQ: Ff, .....i.~utTIR DRAINS.. . ~7 U D RDRAIN IE- N = 9 00 a
` I r .......W12"WASHED......... ~ ~ \ PAVED LOT FOR DI~PLA`Y & ~ FFE ~ 1D00.5 . . ~ ~ ~ Q
~ / ,.,.1- _ %l ' \ t e B rn B '..'.'..STONF.FII;TFRS.'.'..'..... . ` BR 2 STORAGE OF NURBE~2Y 9 8 ~ . f,,.. ~ \ . RA$~~SLOfyE; SHEET
ex. fencellne 1 r----- I LAN©$CAPE MA/fERII~LS \•999:0+ ' I ~ ~ LOWT 'BI ~f~ETE~NT~ N
~ ~ MAINTE ANCE ACCESS Cam, ~ BA IN ~,TYP~
~ \ •_.._...999.0+ N \ fd,
„i~ a.-;.-> • 1 ~ @-' - - - - - 0.5%UNDERDRAIN SLOPE f ~ ~ ~ ~ , r~on, J con
ItChline ••--A'` > 2:5 ~ ° DERDRAIN SLOPE E-- ~ - eX: d 9 i 9.5+ 999:5- 0.5/~ UN - - - - - - - - t
~ > ,
_ r I I ' n S88°15`30"~' 141,71`
~ 9 9.0 > . 998 _ - - - - ~ ex, area Inlet
_ - .~.-~~.-e---~ .mss----- ~4 0 ~ TeX. 3~" rcp~ _
J_._
ex. 12 _ p m---- ~ ~ \ _ 998 ~8 . o ~ ~ Q / / ~ ~ J
mv, out-979.76. _ _ 150 ~ ...a _ f / / ex, ,Junction .box ~ a Q.
- 1 O / ~POwERL•INE. ~ ~ to elev. = 985,98 ~ `y P W
~ X y/~` ~ / RAISE EX. JUNCTION BOX AND CONVERT T') °
~ / . :T.. _ _"GRASS LINED.SWALE #2 I._ ' _,,,y ~ 1 % TO NEW DROP I NLET' _ _ ~ W' ~ { DROP INLET (NCDOT STD 840.17) U.S, HIGHWAY 421
If o~/ WITH WIDE SLOT SAG GRATE (NCDOT STD 1340.22) RIGHT-DF-WAY
/ NEW INLET ELEV= 996.Ot
....101.. - -1 ~ ~
o- oo _ ~ o- - I / GRAPHIC SCALE I-.
.w ii _ / ~

C) __f~ ` (W FEET )
- 10 _ - ~ 1 inch =20 ft. m
- ~ f
f c:~
~,p~BO ® 0
s' 4 ~ ~ v
l SCALE: i" = 20'
i DATE:. 6-1-11
86 DRWN. BY AX
KD. BY. MPT ••``~'GIN~~~pll~l
' CH PROJECT NUMBER
r
j 810024.3
DRAWING NO. SHEET NO.
l t~F f
-

n o „
ro 00
::z U
0 z Z • t0 . t\
- aaW k ~TH~. ;.:t.
O[D X421 C ARCNIE OAWtt)D. RD. ~ 1. TOPOGRAPHIC SURVEY PEFOR D BY MUNICIPAL ENGINEERING O.N Bioreteti ii i ensigns z~'
q _ ~ ~
SERVICES DBA S LINE SURVEYORS: ~Q ~ BR-1 m;N `f N 0 ~ ~ ~ ,
a3 m~ .SITE
Len ~ 1 L ro 55°
2. ELEVATIO S ARE ASSU D. E SEE PLAN FOR TEMPORARY ECH ARKS. US 421. idt~1' it~22' ~~,..:.:a.:.
Area: r e 1 325 sf a
3: BOUNDARY SURVEY PERFOR E D BY AB CHRISTIE SURVEYORS DATED
~ ICE NC 00 , 9!18/07: o
c.v ~ .
TY MAP NTS VICINI '9 N %F: V is
i:2 •rf
.V~ '.:°a ~a
:z~ ,wQ' N
O~ ~N
.......,Nv: Vii.
w N X O
0] U a
~ ~ cJ ~ a..
g ~ ~
C'~ N
C.~ ~ ~ v z
1 ~ M w•
Z:N. . r~. r
DRAINAGE AREA (DA-1) 026 AC. o Q :
o ~ 0 63/D IMPERVIOUS ~ coxP?ruES, A ~ 01 p~
r ~ ' ; 0.6.3 C COEFFICIENT N PLAT 001M~ pN X v.:
~ ~ ! fD
N ew bad'^0 \t VO% .3// Q
1 DOE RIDGE \ c} MGS) ~ O/ Q
,t / t O / Z t t, _ ~nvr~drN® ~ ~
TBM SPIKE IN POVERP0.E tt / tt t` ~ %
r ASSUMED ELEV• / - ex. p-apar>a t / t t ~ tonk SPIKE 1N POWERP0.E / t / V ~ !N. ~ ~ ~ ~ ~ ~ ~ SOI1k
t 1 - \ t t t tbn box A
tti / tt ~ :w sac Penct~I ~ Q
1 J tt ~ \ - A t OFF SITE DRAINAGE t>w
f t 4
tt ) f \t ~ \
t` ~ \ / t / ap
t % tt eu di road DRAINAGE AREA DA-3 t ~ -
0.15 AC. ~ ;t ~ t~ ~ / ~ ~ ! .,.~i..-- _ ~ ,,,.:.J / / PLAT PAGE feE 90"'" ? .moo L
0 /o IMPERVIOUS. ~ t tt ~ tX. 3s° ~ `
0.30 C COEFFICIENT ~ ~ f'f ..r-` -~~ax _ \ / \ / '36' Ebp
a owrhtad ~ t~ / approx. kaatian \ ! r''l~,-' .
tranemitebn Ina i , / t e 38" ornP \ ` ~ ,a _ t06~.1® A J i ~ $69'39' 3'E 301.62 ~ t ~ / ~ ~ ~ I'®..- ;-p J
r \ tt ~ f'• ~ •iP ®..•?f ` tank ~ ~ 1` / / ~ ~ • motion ~ e
/ / . -~~„L sip drop ~ r
1 RJ,.,,,... l ; l ~ 1 / / t y y y ~ r- f / ~ y y y y y y ~ \ ex. irbuttry y 1 _ f y ~ ~ ~I
- I ~ Y, ~ t 'nee y ,1b' UNDt6TUR6@D y y w y y t\ J ~ _ \ V' ¦au I / ~ B ULDER ENERGY rf ~ 1 r TR UTBUpFER ~ ~ ' 1 /I 9~3 I _
~ y y ~ J• y y ,y, "tiY ~V / tt - t RIP~{tAP ENERGY DISSIPATER ~ ! ~ ' ~ + food LIB ~>.A ~F GRASS DNE'D / O~ rOn „ DISSIPATER ! ~ A Pard3 I t f / tendon y~ yr, y y y.--` !pt t oty%'8f1arldt y / SWALEai ~ ~ / p1 ~ 1 1 De
,t~ 1J ~ ~ , A >I - ~
y30'VE(dETATfyD~, ~ y W.~ y y w ^''~'.'--t ` % ,X. ~ 1' r' / ~ / ~
1 9.d-''' 1 BUFFER j • _ I ~ rF? ~ I ~ • , •Y y y •Y •4 W ` ~7O - ' . 7 ,~,n ® ~ Q,
DRAINAGE AREA (DA-2) y y y W y , _ ~ ,9: , . S ~s ~ tak,p Yax ~x PRELIMINARY DRAINAGE EASEMENT _ n ~ ~
.0.23 AC. y y y y y O 1 + E I ± ~ ••a`' ® LL ~ ~
88°/D IMPERVIOUS y y y / y ® ~ sao 1 J f 0.9 C COEFFICIENT N y y + ~ GRASSIINEDSWALEW3 (AFTER THE SITE IS FILLED AND ~ , r z ~ 0
~ t f / ®1%TO NEW AREA INLET ?U ( .9,' INLET PRIOR TO~COMMENCEMENT~OF.,..~
990 e BULdtiSI~VG CONSTRUCTION, A FINAL ~ ` ~ ~ ,r-•
A . / • DRAINA~E~EASEMENT SHALL BE N ~a 4 Q RECORDED AND SUBMITTED TO~ ® t4yD' ~~f~~°~i~ r \
„ _ t ,-„z. - ~ v. au4m4 6.44 - T' _ i' ~ r' r t ~ ®iI~ III®I~ / ~ DWQ) o ~ " b ~.J (t~
f PRELIMINARY DRAINAGE ~ I a •axqp• nape 1
EASEMENT t~~~-~~ _ f! ~7 + ~ ~ Ot ~ 1 /tom \ otocE 1 AS NDCN
® ~ t ~ s~ ~ ~ etorm bon d / ~l®
t I I ~ ~ + / DRAINAGE AREA root~98258 t ~ t ,r" I( ~ 1 / \ -t t.~_ ~ 12° nv 88&93 ~ I I-a / 1 / 1.49 AC. AINAGE AREA (DA-5) ~ ~ s Q 9 AG I .1
f ~ l J / t f I r / 12 /D IMPERVIOUS IMPERVIO1IS ~ f ~ _ Q
/ 1 ~ t 'f ~ ~ o 'i, - ~ \t ~ ~ rn o 0,31 C COEFFI(;IE o 1 C COEFFI(;IENT
. ~ ~ ® \ tii•i.•. rririlAN05CARiNG B'Nl1RSEhY. r: i'r:: r.ic:.. ~ I ~ ~ ~ t ~ t I ao x~' / ~ / / ..FL:::.::::::::::.~'.::.:'..:.. I~ I
/ "'r ® t PAVED LOTPSR DIAP Y8 K/tnalht f .--C3~-2 ! STORAGE OF M~SE~_ 980.-- /
1 ~ _ .t 'Li~SCAPE MATERI LS t .n."' ~ID) ~ .:r.:°irr:.°•:.•.~.r,~:r%C•. •.::r. r.~:a: c::.:::: r::.c:.e/ ! ~ I I ~ M~ENANCE ACCESS / f l ~ / I l In I ~
tX. dNddine - _ ;.:,=q.•.' r'' + 2. t - - - ~ - - r l~ rota
- ,i1 , y .~_„~~'.-~..M.~ .tt I-~ , i ~ ~ ~ I ~-I A ~~~D~.SU~~v I ilb®~ I I I Ai 18! I!B I '
, ` \ -+---SBBY459 ~ 9,60 99a 1 - l01 I ~ I ~ 990-- _ ~ , _ _ ~ ~ - - _ ~ es area kJ.et I Bt . / 191BpI I RI RI I / y _ Q
- , / ®~~~J~~~JI / j ~ p~ ~I\Igltilap ~ -V
n. out-o7p,~e -~..N _ ~ ~t 1 ~ _ 999 ~ - ---.TOO - ~ POWERLINE. / 1 fX. ~A1Ctbn boX i~~~~
,„r __EASEMENf - tap Itv. •48398 ' _Ih, -_.._1®`;` .t - OFF SITE-DI~(INAGE _ ~ ~g1{r~ , RAISE~~acatmcnoNeoxANDCONVERTTO
_ / ¦ I . GRASS LINED SWALE e] ~l 1 US,. H1fdiNAY 421 / - °Ii~ / ) - I ! / DROPj~!LET (NCDOT STD S-0S.t~ J _ -.A, ~ ~ ; ^ ° 1M1' ~.iP T,O NEW DROP INLET ~ WITH IBDE SLOT SAG GRATE QJCDOT STD 8407 RIli4T-~-MhY L. ` -y"" t.. ` : -~QY l:. ~ / NEW I ET ELEV = 998.°3 {ep 1pGS~19 ~ Q ~ ~•1~ ~ W Z
~L. I 'TODD-
a
~ Q W
~ gyp' 1 ~ ~ OFF SITE DRAINAGE / .""1020- ~ t\~ 1 . _ ~ ~1010- /
C ~ ~ 1 ~ W v J
¦ I ¦ 1191,07 I " " ~ ~ I ¦ I ®791 I 'I'®I W I ®P~t~ I i•.1 V
t ~ USHtiNY42 1991,.1.®i~l®i~Di®i99at'si ,t ~ , t ~ 1 ~Iloel~i~ai®i \t , \
~ ~ DRAINAGE AREA (DA-4) t a 0.61 AC. GRAPHIC. SCALE Q ~
/ / D ,t ~ / 0 /D IMPERVIOUS ~ o zo - zo ao ~ Q
I t, `t ? t\ 0.3 C COEFFICIENT
ti \,r tt ,
,,t t,t i ~ (WFEET)
~ t~ ~ t ,1 tt ~ t 1 inch =40 ft. m' r~~~ ,,,J
J / ,t /
t vJ
/ ~ ®®®®®`,llilllllllls/®' o

s/i
::12,~
SCALE: 1 = 40'
pp ~ -
1 lU6 DATE 6-1-11 DRWN. BY. AJC
CHKD. BY. MPT
s ®/®1 ° ~pt1®,®! PROJECT NUMBER
;j t 8?0024.3
i
DRAWING NO. SHEET NO.
1

PVC Screw Cap on Grade
O
iD
G, , ~ 4" PVC on-perforated .Standpipe. ~ , , 3- above grade
Z.~ ;.;w:
Use 45° E and fitting :..:..o:N
Grass Pre-treatment Area - R1 ~ ~
4 Min. Break Line r or equivalent directional ~Q ~N n M pp
ection A-A cleanout t® connect
~ m underdram to standpipe ~ ~ o
Overflow Device ~
Box Riser Inlet Elev. 997 60 . Q~ :....a.....:
Elev. 997.75 Elev. 997.50 Elev: 997.00 4" PVC Capped Underdrain Clean-out Pi e
.:::Curb-cut Elev. 999.00 P with PVC Screw Cap; 3-4"above mulch layer ~ 4" Perforated 1~ ~
atertl ht Can :Cap- SCD 0 PVC ~
9 Pondin De th elev. 997.75 ~ p StoneB"Thickness U . ~ N
- _ _ - _ = = on Terminal moral _ Underdrin ~
3" Mulch; elev. 996.75 I - End ofPle - p Pipe ~ ~ ~ ~ .~A ~ z
- I-I~ III _I 111_111 111 1 Planted FescuelBlue toss Sod Grass - _ - _ - = 3 Soil Media g I-III-1~= I ~I I I_I I III III ::III _ ° ~ ~ O ~ ~ ~
I - - - - - - - 85 86 /o Sand - T__-_.~I I I-III-I I-I~ =1 I _ ° . I III III 812/° Fines 0
III-11-1 I ~I I-I I- =1 I I III ® 3-5° _ - - /o Organic. - - - - - - - - - ~WN
- =_=11~-1~=1 I-III =1I T ITI - - _ _ - _ - ~ - - - - :::W~ - - - - - - - - - - - - - ,~N
i K. ~~..M ~ >r :Y a~, ~.a 4.. Washed. Sand; elev. 993.75. t , , ~ Filter Cloth; elev. 993.42 - - - - - - - - - - - - - - - - - ~ N
,,fed., . P ( P ) ` ' ' ~ Underdrain Pi e: 4" Schedule 40 erf. Compacted Fill
aooooo000000°~_ 10" Washed Gravel (#57) Min. 3"above ~ x
Underdrain pipe outside bioretention cell and on each side of underdrain i e• PP .
tie into 6" Schedule hon-perforated, bottom elev. 992.5 12 CMP Riser tie-in Elev. +1-992.0 0,5% slope) _ _ _ ~ ~ m ~ Q
Invert +/-990.5 ( ( )
Elev. 990.00
Break Line ~ ~ •j ~
Seasonal High Water Table elev. 966.0 L
~ ~ N U.
NTS M J Z ~
n n IC. ~
R-1 SECTION - A ..w
NTS an e i to 4~ antenance Schedule: ~
Prunin~ Prunin~~ 1-2/year High level of nutrients in bioretention area. X
increases growth in planted vegetation.
a
Movuin~ Mowin~~ 2-12/year dg grassed portions of swales and bays . a
Mulc hllc Mulchilg 1-2/year Replace mulch in void areas where gashing has
occurred.
Mulc h Mulch 1/2-3 years. Mulch accumulation reduces water storage
Grass Pre-treatment Area _ ~ 2 Remo a 4 Mm. emo~~al volume. Mulch accumulation occurs during Q
Break Line r
.Section -A ®oding events.:
IlVate ' nnc IlVatering _ 1/2-3 days First 1-2 months after planting; followed by
Overflow Device Box Riser Inlet
Elev. 996.25 I Elev. 995.50 4.. PVC Ca - F2rtI~IZ~t watering during excessive dry periods.
Curb-cut Elev. 99?.50 Elev. 996.00 pped Underdrain Clean out Pipe Fertilization 1 time Intialfertilizationluring planting of vegetation. ~
with PVC Screw Cap; 3-4"above mulch layer Dead Dead 1/year Approximately 10% mortality rate among planted ~ U
- - - 9"PondingDepth;elev,996.25
2"washed stone _ at@rla ~l Riprap over - - - - - Matena~l material; remove and replace. r ~ W
- - _ - - _ - Stane 8".Thickness - - - 3" Mulch elev. 995.25 DISC. _ _ : Misc... 12/year' Remove trash; spot weeding; cleanout overflow 0 W ~
= - . I1=1II=1II =1I
IYI I I-III-I Planted FescuelBluegrass Sod Grass = - _ _ _ = 3' Soil Media I_I I ELI I_I I I_I I I.I ~ I_I I I_I I I: III ° :device; cleanout inlet; remove silt and sediment.
_ _ - _ - _ - ° 85-88/°Sand C~@anC1u I I-I I I_I I I_I ~ I-I I I_I I I_I ~ I;~ I - - - 812 Fmes Cleanc?uf 1/year .Inspect and perform cleanout of underdrain. 0_
~I I I=111=111=111=111=111 III _ ° - - - - - - 35/o Organic PI @S to ~ Pipes Q ~ ~ ~
-111_111-111_111=111_111 _II
~a, ~r u .a. 4" Washed Sand; elev. 992.25_ Filter Cloth; elev. 991.92 ~ ~
j Underdrain Pipe: 4"Schedule (40 perf.) oooo°oaoooooo~_ C7 W
10"Washed Gravel (#57) Min. 3"above
Underdrain pipe outside bioretention cell and on each side of underdrain pipe; I I N z ~ ~
„ tie into 6"Schedule non-perforated. bottom elev. 991.0 _ 12 CMP Riser tie-in Elev. +1-990.50 0.5 % slo e J~~Z
Invert +1-989.00 ( P ) ( ) ~~o
Elev. 988.50 ~.1., z ~ o
Break Line F--
Seasonal High Water Table elev. 966.0 i
Q
~Q
n it 10.5' MIN.
R-2 E - CT AA
NTS Q
FREEBOARD Q
d e of buildin 9 9 3.'1 DEPTH 3~~ 1.5' MIN.
Sod Buffer
Curb Flow f
d,
Sod Buffer ,r . . d - a _ NISHED FINISHED GRADE ~--2' MIN.
:a ~
' •e J
1 Capped Cleanout Pipe Max. Ponding
, Z Q
Water De th 9" . .y P t ) ,f CROSS Ti® ° W
3:1 Max T ical • ~ yP ) . , Mulch La er W O
. - - y 0
- - - - 3:1 Max T ical ~ - - - - -
~ - - - G SVVALE E L ~ 0
- - +4'. - I SWALE # FLOW DEPTH FREE BOARD
_ _ _ = _ _ = 3' Soil Media.
:a Z 1 0.93' 0.5T l.y,l
. d ! - I~-
Buildih - _ - - _ _ _ 9 2 - 0.74' 0.76° W W
Foundation - - - - - - -
3 1.00' 0.50' ~
4" washed sand m ~
Filter cloth 0 0 0 0 0 0 0 0 0 0 0 _`o 0 0 0 0 0 o a 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10" washed -ravel and
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 0 o a 0 0 0 0 0 0 0 0 0 0° 0 0 0 0 0 0 o underdrain i es
p PP
t NOTE: SWAL~ SHALL BE LINED WITH NORTH 0
~ , AMERICAN GREEN SG150 EROSION CONTROL ATTING ,®,1~"~~'~'11~~,
v n• e a n n
tsioretention ueoi 1 UK HrrrcUVtD EQUAL. SWALE SHALL HAVE A MINIMUM P ; SCALE: 6--NTS
; Q~ 's DATE: 6. -f1 1% AND MAXIMUM 5% GRADE. DRWN. BY' Arc
Mina 10 wide
8 66
= a CHKO. BY: PT TYPICAL PERMANENT GRASS L DETAIL ® FN PROJECT NUMBER
S-Sn R1 SECTION n GINS
NTS NTS 610024.3 DRAWING NO. SHEET NO.
9
i
I

; N
. U n
:....:..:::Z:~
Plantin Area: 140 sf g 0 Plantin Area: 1,900 sf d ~ ~ 20 40 z°o:
_ _ g Plantin Densit :1000 stems/acre • i ~ :°::::.t N 0]
9 Y Plantin Densit :1000 st g y emslacre ~ Q N
Total Plants: 32 Total Plants. 44 m~ 4 0
GRAPHIC SCALE (IN FEET) m .o
~ o . Q
? Rh ~ u~
odo U ~ '9 N
Z
TII a .Fescue /Kent a ;ue / Kentacky Bluegrass
Lil urf yt blended , blended sod. ~ ~
l Do wood g - ~Q
,W
N
W'n i terberry
L° ilyturf Day Llly
~ b
Switch Grass
Winter e b rry Dogwood ~ a o ~ °
Winter berry 0 ~ c~
Do wood 1 9 0 L
~ > N
. ~ ~ " Rhodo ~ ~ M:: V C~
Swit Da Lil ch Grass Y Y Switch Grass Z p~ J M. :.W ~
here Rhodo ,Z. N
Qn
1 Rhodo UI(interberry
Rho do
Vib rnum Switch Grass Lilyt~ii Switch Grass "
Dogwood. Tall Fescue / Rhodo ~od Lilyt~irf Rhodo ...:.::m • : -Dogwood o
Kentu - edbu Rhodo ck
Y
Blue ras g s
blended sod. 000 000 ..._n. r
edb d
D ° ay Lil Y

000 00o z
Switch Grass ~0 20 40
Da Lil Y Y -
o
Do wo Winterber Lil urf g ®d Da I. Yt Y ry Lil urf d Day Lily Winterberry Yt
IN FEET
~ ~
J
_l
:
e b Plan s: co ° H r aceous t 1 t. ntamers to order Hei ht/Width q g Q ~
~ ' ~ Da Lil Hemerocalhs Ha Returns . 17 3/3 U~
Y Y, PPY ' i
Lil turf Lirio e s state 15 1 /2 Y p p
Switch Grass Panicum vir atum Prarie Skies 18 3/3 Z ~ Imo.
9 J ~
Shrubs: 3- a Ilon ..containers # to order ei ht/UVidth
g g , 0
...Sal Do wood Cornus amomum 6 1216 F,~ g. F~ubber hose _ ll.l Z ~ O
, , , • , Se Wmterber Ilex vertrc~allafa After low Jim t plant in center of it so Dand 7 12/6 p ry g Y 2'° Hardwood Stale C~ U
~ ~ 1 Set plant in center of pit Q
Rhododendron Rhododendron ma i that - the di Remove x mum. 8 1816 a ameter of the Mulch m e Surlap from to ~ of ball / P3 C~ Q
root ball is above reds Soil „ g ,...--Soil mound around Mulch Soil. mound around
Trees: B&B minimum 2.5 dbh to order Hsi htlVlhdth g xl~ xi~osed ball exposed ball
, . Eastern. Redbud Cercis canadensis 2 30 /18 ~ Q
' in. 6'. in:
Blackhaw Viburnum Viburnum runifolium 30'118' 3 in.6''~~ .Min: 6
. Min. 6" Backfi Backfill pit with. existing soil. ~ M~~. 6" Backfill if with existin soil
urse Source. ry _p g
Fe i rt lizer at bottom of it
.Mellow Marsh Farm Inc. p Fertilizer at bottom of pit
1 1 00 „ 3 21N d Store Road
Tree 1 to 3 tali er P Shrub - Bareroot Planting..:
SIIer Cit C 27344 y, B& Plantin g Z
Q
J
Q.
t
Ian i e P t n Not s. o Z
g F j`~ a r..
1. Root stoc of k ant material shall. be ke t mast duran 7. Set the lent strai ht and p p g p g m center of it so that a rox. o
p pp 14. All last mater p ant material should conform of the standards of J
trans ort from the source to the 'ob site and u ~ p nail lamed. 1 P of the diameter of the the cu root ball is above final reds. went edition. a g =nt edition of American Standard for Nursery. Stock 0
2. Walls of lantin its shall be du so the p g p g are vertical. Y 8. Back fill lantm it with existm so as a roved b e
P g p il. th g pP Y wed by the American Standards Institute, Inc.
3. The diameter of the lantin it must be a min. o • p gp f6 9. Make sure lent remains strap ht Bunn b 15. All lent maters p g ck fillet p g g ant material should have normal well developed Z
lar er the e e nth ball of th tree. g rocedure. bran p ches and vi ~ O and vig~~rous root systems, and be free from F=
g 1
4. The lantin it shall be des enou h to allo~v - of the 10: Never cover the to of the ball defects dis r p g p p g with soul. pond soil ease c s p , disease, and pests. ~ Z
overall di s'o men i n of the root ball to be above reds. Loose around the ex osed ball. 16. All lent m g p p ater~ ant material should be tagged .for identification.
soil at the botto o e . m f th At shall be tam ed b hand: 11. Trees shall be braced with wooden s 17. Min. Tree seze. p p Y takes. Stakes Tree sizE~ is 2.5"dbh m ~,L
5. The a ro riate amp o unt f fertilizer as to be laced at shall be laced arallel to walkwa s and bu I 18. m. Shrub lei P~ p p P p i din s. Stakes Y g p Shrub ple~nt material; 3-gallon containers ~
the bottom o e f th it standard. fertilization rates a I are to bee uall s aced on the outs 19. in. Herbace~ O
p q y p ids of the root ball. pp Y Herbace~~us plant aterial;1-quart containers ~ o ~
6. The lah s t hall. be removed from the. container and .Utilize hose and wire to brace. the tree 20, ulch la er p to the stakes. rr ~ Y h layer rr ust be free. of seeds, soil, roots; either :.,,`t„t^~;?'r,n,,. /
paced in the punting pit by lilting and carrying the plant by 11. because of the high nutrient levels in the bioretention double or triple srir r triple shredded material aged SCALE: NTS
at least 6 months; ' ; DATE: 6-1-11
its ball (never lift b branches or trunk). cell plants will not require further fertilization. applied ur applied uniformly and evenly. m _ oRwri. 6Y: nJc
13. Water plants after planting for 30-60 minutes water as
86 CHKD.-BY: APT .°s ° PROJECT NUMBER
necessary during the first season until establishment. ® GINS ®®,®®cy~ ...Q~• 810024.3
a 111t,~``` DRAWI G NO. SHEET N0.