20080322 Ver 1_Site Plan_20080407

BURDETTE LAND CONSULTING, INC.
N.w 1=;
10212 Creedmoor Road - Raleigh, North Carolina 27615
Telephone [phone] - Fax [phone]
S
May 1, 2008
Ms. Lia Myott
NC Division of Water Quality
Central Office
401 Oversight/Express Review Permitting Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604
RE: Request for More Information Response
Drayton Reserve, Wake County, NC
DWQ Project #: 08-0322
BLC Project #: 60096
Dear Ms. Myott:
I D W@!4a#
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I
We received NC Division of Water Quality's (NCDWQ) request for more information on the
subject project dated April 18, 2008. The project Impact Maps (6 Sheets) and Stormwater
Management Plan (SMP) (3 sheets) have been revised to include the additional information and
are attached. A revised mitigation acceptance letter from the NC Ecosystem Enhancement
Program is also attached. Each item requested in the aforementioned letter is specifically
addressed below.
1. Wet Pond 1
a. Sheet SMP 1 has been revised to include a detail of the retaining wall showing the
additional measures to enhance the structural integrity of the proposed sectional
retaining wall.
2. Wet Pond 2
a. Attached is a letter from developer is a written commitment to construct a fence
around the pond.
b. Sheet SMP2 has been revised to show permanent reinforced matting below the
emergency spillway as requested.
Ms. Lia Myott
May 1, 2008
Page 2 of 2
c. We are still waiting for written approval from Progress Energy for the installation
of the level spreader in the power easement.
3. Wet Pond 3
a. Channel capacity and lining design calculations for the bypass swale (Pipe 67 as
shown on Impact Map Sheet 4 of 6) are provided on Impact Map Sheet 2 of 6.
b. Sheet SMP3 has been revised to include filter fabric underneath the riprap in the
bypass swale.
Please feel free to contact Emmanuel Castel with Summit Engineering at [phone] directly
if you have any questions about the revised Stormwater Management Plan.
Sincerely,
Burdette Land Consulting, Inc.
Jennife A. Burdette
Environmental Specialist
c: Mark Altman - Millridge Companies, Inc.
Emmanuel Castel - Summit Engineering (letter only)
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SUMMIT
CONSULTING
ENGINEERING • ARCHITECTURE • SURVEYING
1000 Corporate Dr., Suite 101
Hillsborough, NC 27278-8551
Voice:[phone] Fax: [phone]
www.summit-enaineer.com
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OC PYRIGHT © 2005
SUMMIT CONSULTING
ENGINEERS
DRAWING ALTERATION
IT IS A VIOLATION OF LAW FOR ANY PERSON,
UNLESS ACTING UNDER THE DIRECTION OF
LICENSED ARCHITECT, PROFESSIONAL
ENGINEER LAND SCAPE ARCHITECT, ON
LAND SURVEYOR TO ALTER PITY ITEM ON
THIS DOCUMENT IN My WAY. ANY LICENSEE
WHO ALTERS THIS DOCUMENT IS REQUIRED
BY LAW TO AFFIX HIS OR HER SEAL AND THE
NOTATION 'ALTERED BN FOLLOWED BY HIS
OR HER SIGNATURE AND SPECIFIC
DESCRIPTION OF THE ALTERATIONS,
r
PROJECT ENGINEER
EAC
PROJECT MANAGER
JWP
DRAWN BY
EAC
SCALE FIRST ISSUE DATE
1"=40' 01/09/2008

IMPACT #:
1
2
3
4
5
6
7
8
i
STREAMS AND WETLANDS IMPACTS TABLE
STREAM BUFFER
STREAM MEANDER DISTURBANCES: WETLANDS
STREAM TYPE: LENGTH: ZONE 1 ZONE 2 DISTURBANCES: CONSTRUCTION:
NA NA NA NA 1135 SF ROADWAY
NA NA NA NA 5,926 SF ROADWAY
EPHEMERAL STREAM 20 LF NA NA 155 SF UTILITY CROSSING
INTERMITTENT STREAM 0 LF 305 SF 210 SF 0 SF BYPASS CHANNEL
PERENNIAL STREAM 20 LF 1,923 SF 1,904 SF 3,839 SF UTILITY CROSSING
PERENNIAL STREAM NA 305 SF 210 SF 449 SF BYPASS CONVEYANCE
PERENNIAL STREAM NA NA 3,263 SF 0 SF GRADING FOR BMP
PERENNIAL STREAM NA NA 2,014 SF 0 SF GRADING FOR BMP
SWALE LINING SCHEDULE
a
M
16
14

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J WU' U 3 N 0 LL
e
Z
Z a Q Tn N v C K I
Z 1.. = a a
a W
o M v1o LL
?cc rc Ito Q10 0 O a w ? m =?
U ? ¢ Cc min in/hr CFS m LL m m ¢ 3 N 2 FPS . LINING
PIPE 97 0.20 0.80 5.00 7.22 1.16 0 3 3 0.53 0.85 3.37 0.25 0.50 0.031 1.35 0.17 CLASS A RIPRAP
PIPE 99 3.98 0.51 5.00 7.22 14.64 6 3 3 0.87 7.44 11.47 0.65 0.50 0.040 1.97 0.27 CLASS I RIPRAP 0
SWALE 6 3.81 0.59 5.00 7.22 16.23 3 3 3 1.02 3.11 6.44 0.48 4.00 0.035 5.22 2.54 CLASS B RIPRAP 3
l

SITE DATA
IMPERVIOUS DATA
PIN: 1748-77-0936,1748-66-9521,1748-67-9400, PROPOSED IMPERVIOUS AREA:
1748-87-0516 & 1748-86-1480 - ROADWAYS I SIDEWALKS 22.28 AC
EXISTING ZONING: R-30 - HOUSES I DRIVEWAYS: 7.95 AC
PROPOSED ZONING: R-II -156 LOTS @ 4,000 SF PER LOT 14.33 AC
SITE AREA : 102.97 AC.
WATER IMPOUNDMENT: 9.38 AC. PERCENTAGE IMPERVIOUS AREA = 23.80 %
PROJECT AREA: 93.59 AC.
NUMBER OF LOTS : 159
AVERAGE LOT SIZE : 0.4143 Ac.118,048 S.F.
MINIMUM LOT SIZE : 0.3444 Ac.115,000 S.F.
SCALE: 1" = 30'
IMPACT #1 - DETAIL
6
5
4
3
2
1
0
REVISIONS DATE BY
j?@,wflM
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Mqy I D
2008
11*s
AND T ,r
"'""
DRAYTON RESERVE
TOWN OF ROLESVILLE
WAKE COUNTY, NC
IMPACT# 1 & SUMMARY TABLES
PROJECT NO.:
06-395
SHEET 2 OF 6 1
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IMPACT #2 - DETAIL
SCALE: 1" = 40'

TEMPORARY
EROSION
CONTROL
DIVERSION
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IMPACT #3 - DETAIL
SCALE: 1" = 40'
WETLAND
(TYP.)

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(TYP.)
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EPHEMERAL
STREAM IMPACT
20 LF

WETLAND IMPACT
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INV IN = 258.48 (MH A9) D
----260- INV IN = 259.97 (MH A11)
INV OUT = 258.28 MAY 1 2008
343.62 LF OF 10" PVC SANITARY DES-WATER OUAUV
SEWERLINEQ0.50°k ?pNOSTQR?RNATER
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summ
CONSULTING = SEAL
ENGINEERING • ARCHITECTURE • SURVEYING 33242
1000 Corporate Dr., Suite 101
Hillsborough, NC 27278-8551 -3883 -
na neer.comax: [phone] A,??/rrrrr+1114SA!G?????\
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Voice: (919)
r, COPYRIGHT 0D 2005
SUNIMIT CONSULTING
ENGINEERS
DRAWING ALTERATION
IT IS A VIOLATION OF LAW FOR ANY PERSON,
UNLESS ACTING UNDER THE DIRECTION OF
LICENSED ARCHITECT. PROFESSIONAL
ENGINEER LANDSCAPE ARCHITECT. OR
LAND SURVEYOR TO ALTER ANY ITEM ON
THIS DOCUMENT IN ANY WAY. MY LICENSEE
WHO ALTERS THIS DOCUMENT IS REQUIRED
BYLAW TO AFFIX HIS OR HER SEAL AND THE
NOTATION'ALTERED BY' FOLLOWED BY HIS
OR HER SIGNATURE AND SPECIFIC
DESCRIPTION OF THE ALTERATIONS.
PROJECT ENGINEER
EAC
PROJECT MANAGER
JWP
RC WN BY
SCALE FIRST ISSUE DATE
1 "=40' 0110912008
6
5
4
3
2

EO
REVISIONS DATE BY
DRAYTON RESERVE
TOWN OF ROLESVILLE
WAKE COUNTY, NC
IMPACTS # 2 & #3
PROJECT NO.:
06-395
SHEET 3 OF 6
Q
IMPACT # 6:
BYPASS CONVEYANCE DETAILED PLAN VIEW N
SCALE: 1 "= 30' °
0
0
IMPACT #4:
BYPASS CHANNEL DETAILED PLAN VIEW
SCALE: 1 "= 30' 4k4' .!B - TOP = 294.16
LINING: CLASS B
-- t_ _o,J rRIPRAP 12' THICK
% V

PIPE
105 `
6' ORIFICE
INV = 29126
nrnT?nu A A
e+rnTtn?l e o
STREAM STREAM BUFFER
MEANDER DISTURBANCES:
STREAM TYPE: LENGTH: ZONE 1 ZONE 2
INTERMITTENT STREAM 0 LF 305 SF 210 SF
PERENNIAL STREAM NA 305 SF 210 SF
I1 E ?Il-lr

FILTER FABRIC
UNDER RIP RAP
?f f

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NATURAL
GROUND
I?II?II
RIPARIAN BUFFER
IMPACT
ZONE 1= 625 SF I
ZONE 2 = 409 SF
\. I
WETLANDS
DISTURBANCES: CONSTRUCTION:
0 SF BYPASS CHANNEL
449 SF BYPASS CONVEYANCE / j
6
5
4
3
2
1
0
REVISIONS DATE BY
FILTER FABRIC
UNDER RIP RAP
LINING: CLASS B
RIPARIAN BUFFER IMPACT
ZONE 1= 305 SF
ZONE 2 = 210 SF
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IMPACT #5 - DETAIL
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HORIZONTAL SCALE: 1 "=40'
VERTICAL SCALE: 1" = 4'
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(TYP•)
WETLAND IMPACT
IMPACT #7 - SEWER
WETLAND, STREAM &
BUFFER

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SUMMIT
CONSULTING = SEAL
ENGINEERING • ARCHITECTURE • SURVEYING = 33242
1000 Corporate Dr., Suite 101 t?
Hillsborough, NC 27278-8551
Voice: [phone] Fax: [phone] ' M A Gf \????
.www.summiPenaineer.com
COPYRIGHT © 2005
SUMbfIT CONSULTING
ENGINEERS
DRAWING ALTERATION
IT IS R VIOLATION OF LAW FOR ANY PEFSOR
UNLESS ACTING UNDER THE DIRECTION OF
LICENSED ARCHITECT, PROFESSIONAL
ENGINEER. LANDSCAPE ARCHITECT, OR
LAND SURVEYOR TO ALTER ANY ITEM ON
THIS DOCUMENT IN ANY WAY. ANY LICENSEE
WHO ALTERS THIS DOCUMENT IS REQUIRED
SY LAW TO AFFIX HIS OR HER SEAL AND THE
NOTATION 'ALTERED RY' FOLG`E` SY HIS
OR HER SIGNATURE AND SPECIFIC
DESCRIPTION OF THE ALTERATIONS.
PROJECT ENGINEER
EAC
PROJECT MANAGER
JWP
DRAWN BY
EAC
SCALE FIRST ISSUE DATE
1"=40' 01109/2008
IMPACT #5 - PROFILE
258
256 -RIPARUINBUFFER __ ---
254
STREAM yF._-
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i
I
252 I
_ WETLAND --- I
- r - s
i
- r- -- ?-
IMPACT

250
I

1__ I /
D ELEVATION =248.00
100 YR FL
I I
248
\ II

246 - -- - -- - - - -- -- -
'.4 LFOF10"DIP 12'MIN 21LFOF10"PYC'
244 - S
-SANITARY SERVER 194. ------
UNE @ 0.58%
SEWER LINE @ 0.50% SS MH OD
242 SS MH DC - _ RIM =250-00-_-----------

= 250.00
RIM
INV IN (10') = 243.47
INV IN = 242.76. _ -INV IN (8") =243.47
INV OUT = 242.56 INV OUT = 24327
240
14+00 15+00
C . e 'S - f
7 P+ 1
ivi ,7 1 CUlu
DENR•WATERl1WWTY
WETIJ40ANDSM11 WAIMBRANCH

IMPACT #: STREAM TYPE:
5 PERENNIAL STREAM
6
5
4
3
2
1
0
REVISIONS DATE BY
STREAM BUFFER
STREAM MEANDER DISTURBANCES: WETLANDS
LENGTH: ZONE 1 ZONE 2 DISTURBANCES: CONSTRUCTION:
20 LF 1,923 SF 1,904 SF 3,839 SF UTILITY CROSSING
DRAYTON RESERVE
TOWN OF ROLESVILLE
WAKE COUNTY, NC
I M PACT# 5
PROJECT NO.:
06-395
SHEET 5 OF 6 1
_,,
2g6 2a7 ULU.
= 290 292 .,I,. = z -
pAM 2
tgA- -TOP
294 292
,290
2aa _
IMPACT TO
BUFFER ZONE 2
SUMMIT a
CONSULTING = SEAL =
ENGINEERING • ARCHITECTURE • SURVEYING = 33242
1000 Corporate Dr., Suite 101
Hillsborough, NC 27278-85511
Voice: [phone] Fax: [phone]
www-summit-enaineer.com
rCOPYRIGHT © 2005
SUMMIT CONSULTING
ENGINEERS
DRAWING ALTERATION
IT IS A VIOLATION OF LAW FOR ANY PERSON,
UNLESS ACTING UNDER THE DIRECTION OF
LICENSED ARCHITECT, PROFESSIONAL
ENGINEER LANDSCAPE ARCHITECT, OR
WA SURVEYOR TO ALTER ANY ITEM ON
THIS DOCUll N ANY WAY. ANY LICENSEE
WINO ALTERS THIS DOCUMENT IS REQUIRED
BY LAW TO AFFIX HIS OR HER SEAL AND THE
NOTATION 'ALTEnD BY' FOLLOWED BY HIS
OR HER SIGNATURE AND SPECIFIC
DESCPoPTION OF THE ALTERATIONS.
IMPACT #7:
BMP#1 PLAN VIEW
SCALE: 1 "= 30'
STREAM BUFFER
STREAM MEANDER DISTURBANCES: WETLANDS
IMPACT #: STREAM TYPE: LENGTH: ZONE 1 ZONE 2 DISTURBANCES: CONSTRUCTION:
7 PERENNIAL STREAM NA NA 3,263 SF O SF GRADING FOR BMP
8 PERENNIAL STREAM NA NA 2,014 SF 0 SF GRADING FOR BMP
IMPACT #8:
BMP#3 PLAN VIEW
SCALE: I"= 30'
6
5
4
3
2
t
0
REVISIONS DATE BY
PROJECT ENGINEER
EAC
PROJECT MANAGER
JWP
DRAWN BY
EAC
SCALE FIRST ISSUE DATE
1"-40' 01109/2008
D ?jv
MAY 1 2008
DRAYTON RESERVE
TOWN OF ROLESVILLE
WAKE COUNTY, NC
IMPACTS# 7 & 8
PROJECT NO.:
06-395
SHEET 6 OF 6 1
tem
1.11. iaa . vniellt
PROGRAM
April 15, 2008
Mark Altman
Drayton Reserve, Inc
818 S. White St.
Wake Forest, NC 27587 Expiration of Acceptance: October 15, 2008
Project: Drayton Estates County: Wake
The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to
accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that
the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the
applicant to contact these agencies to determine if payment to the NCEEP will be approved.
This acceptance is valid for six months from the date of this letter and is not transferable. If we have not received a copy of
the issued 404 Permit/401 Certification/CAMA permit within this time frame, this acceptance will expire. It is the
applicant's responsibility to send copies of the permits to NCEEP. Once NCEEP receives a copy of the permit(s) an invoice
will be issued based on the required mitigation in that permit and payment must be made prior to conducting the authorized
work. The amount of the In Lieu Fee to be paid to NCEEP by an applicant is calculated based upon the Fee Schedule and
policies listed at www.nceep.net.
Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the
following table.
Neuse
03020201 Stream (feet) Wetlands (acres) Buffer I
(Sq. Ft.) Buffer II
(Sq. Ft.)
Cold Cool Warm Riparian Non-Riparian Coastal Marsh
Impacts 0 0 0 0.35 0 0 1300 7500
Credits 0 0 0 0.70 0 0 3,900 11,250
Upon receipt of payment, EEP will take responsibility for providing the compensatory mitigation. If the regulatory agencies
require mitigation credits greater than indicated above, and the applicant wants NCEEP to be responsible for the additional
mitigation, the applicant will need to submit a mitigation request to NCEEP for approval prior to permit issuance. The
mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of
Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998.
If you have any questions or need additional information, please contact Valerie Mitchener at [phone].
Sincerely,
William Gilmore, PE
Director
cc: Cyndi Karoly, NCDWQ Wetlands/401 Unit
Jan-tic Shern, USACE-Raleigh
Eric Kulz, NCDWQ-Raleigh
Jennifer Burdette, agent
File
Pro" Our ma&

North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 /www.nceep.net
_ {Ai T
MILLR W.E
C O M P A N 1 E S
April 30, 2008
Mrs. Cyndi Karoly
Division of Water Quality
401 Oversight / Express Review Permitting Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Re: Drayton Estates; DWQ Exp. No. 08-0322
Subj: Response to plan review comment
Dear Mrs. Karoly,
We are in receipt of plan review comments that were issued by your office for the storm water
management plan for Drayton Reserve Subdivision. We have noted your recommendation stated
under item 2a. for Wet Pond 2 and are writing to confirm that we do acknowledge the need for some
form of "guard rail fence" between the pond and adjacent road. We do intend to provide such a
barrier and hereby commit to you that such measures will be installed. We' have not included this on
the current plan since our goal is to have the barrier incorporated into the overall landscaping plan
for the project. This plan is still in progress and thus we are unable to provide a schematic at this
time.
We trust that this written commitment will satisfy your concern and be considered adherence to your
recommendation. Please let us know if it does not or if there are any further questions. Thank you for
your continued efforts with our projects.
Sincerely,
Millridge Companies
(Manager for Drayton Reserve Inc.)
Mark A. Altman, PLS
Development Manager
Cc: Jennifer Burdette; Burdette Land!Consulting
Emmanuel Castel; Summit Con, sujt . ? Engineers
818 S. WHITE STREET • WAKE FOREST, NC 27587 0 P - 919-556-5418 1 F - 919-556-6672 WWW.MILLRIDGECO.COM'
a
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i ~ / / \ \ BYPASS UPPER HALF OF VEGETATED SHELF (OUT OF WATER) - ~ \ \ HERBACIOUS ASCLEPIAS INCARNATE /SWAMP MILKWEED 4"CONT. 10
- ~ ~ ~02Q9M - 0 / / \ ~ ~ FOREBAY \ ~ CAREX SPP. /SEDGES 4"CONT. 10
/ \ \ \ CHELONE GLABRA /WHITE TURTLEHEAD 4"CONT. 10
I ~ _ _ - - - - ~ ` ~ ~ - _ _ - - _ - ~ \ CRINUM AMERICANUM 1 AMERICAN CRINUM LILY 4"CONT. 10 CRINUM ERUBESCENS /SWAMP LILY 4"CONT. 10 U Z
~ , ti~ i ~ I DICHROMENA LATIFOLIA /WHITE STAR GRASS 4"CONT. 10 0
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~ WETLANDS ' OQ 21 ~ - EDGE n~\> FLOW SPLITTING I -"I LOWER HALF OF VEGETATED SHELF (SUBMERGED) ~
S l , ` I S ~ ~ ~ - ~ ACCE SCE ACCESS STRUCTURE I ~Ip EMERGENT CYPERUS ARISTATUS /FLAT SEDGE 4" CONT. 15 '
/ I ~ - Mp,1N ~ 24~+ 241 248 249 p' ~Q' I ~ JUNCUS EFFUSUS / SOFTRUSH 4" CONT. 15 ?I2 ACORUS SPP /SWEET FLAG 4" CONT. 15 '
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x FLOW € € s s € s € € s , ! j ! ! ! } ! # i S j ! j ! } i S j ! j ? ! ! # ! F"~ ¢ ¢~aaQZ~Om~a
\ ' SPLITTING / ~ BYPASS (TYP.) € s € € € € € 1 s i j STRUCTURE f' # € s € ? # ? € ! s € ~ / , € € ! t
~ , - / / € € j ~ j } ! f i f ! ! ! ! ~ ] p OF~Qw~N¢aZ0 P-i V1 ~Oa ~ tt 00 1 1 7 i! I S! j j i$! 1 \ / O z OaWwjO~~pNa
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I r ,ANDRCCE ~ ~ ~ I ZONE1 M / t»w~~3mzoo
I I EASEMEN • I \ ~ ~
\ li ~ EDGE _ ~ WETLANDS _ ~ \ ~ Q
~ 25b ~ ~ •1 I, ~ ~o ZONE2/ 51 ~ ~ ~ s W~ V
2 ~ ~ VEGETATED ~ o \ / \ ? f ~ / ~ ry ZONE2 \ $ ii ~
~ FILTER STRIP ~ . ~ \ : \ ~ ~ / s ! w ~ ~
~ / ~ ~ PTO ~ ABM _
~ 4.00 \ ~ - / / \ i 2
_ _ \ _ ~ ~ 1, •.7~ - -iWc _ _ ~ - ~ ~ - _ \ J - - O --WIL ~ ~Jll_ \ ` ~ ~ ! z ! ! # $ \ \ ~ - ~ W ~
. - - - € I ti - _ ~ ~ W / ' HIGH FLOW ~ z Q
- - DRAINA I. LEVEL , _-~-_.w~ \ . -,w~ - - - _ - - _ ,u,° - BYPASS \ z Q
j ~ ~ ~ . MAINTEN N E S ~ - - _ AND AC S € Q. _ ~ PLAN Z
~ - ~ - Q EASEME T? s Q DRAINAGE, MAINTENANCE \ U U
€ - ` € € ~ - BOTTOM ELEV \ ~ , AND ACCESS EASEMENT a~ a W o W ~ Z
' ~ } # r - = 245.50 210' ~ $ ? } ! ~ AY ~ - SCALE: 1" = 30'
. - , ,
` # ~ m I _ € P € s ~ t € 1 € . ,
~ € i s i s € - € € ! S 1 € / ~ 246 . R Z~
~ :STORM ATER WETPOND #1 DRAfNAGE SEA: ; ? ! i € # € 2 248 SS _ ~ - ~ FLOW SPLITTING I °y Z ` Q~~•~'•~FSSIO,y~l~j~i~':
~ ~ _ t• ~ ~ ; , s ~ ~1T~E € € s -w~ 249 _ _ 25 _ _ - v v.` ~ i ~ ~ ~ j ~TR~UC~U1Ei s € - '_,u~__,~-_ 0' INTENANGEACCE ~ . ' STRUCTURE fl~m ~ •9 'I _ r1 MA _ _ . I.. N = SEAL =
~ € • € € _ - -
' - - ~ : F IMpE 10 ~ 6.678 C - C = 0.95 i € - i € i € ? s i - _ _ - ~'Iv = 33242 = - .
~ VE TATED: :1 . 6 AC - C = 0 5 • ~ € i € , € i , ~ r , , € € € € : - - - - - 253 - r , ! € 1 € ! € € € I I. ; € 254 55 NIA
• i ' TOTAL: 20.054 - CO 0.55 } € € € € € ;I t i € i 2 56 . , - ! } i ? 1 € ~R~vIN~G):, ~ 1 ~ ' r-- - - X257 )5'j FOREBAYGABIONWEIR Zh CP~~
1 i ( ! € ! ~1A(NT~N~N E i ' 10 • ~ ' % EL A. 10' WIDE VEGETATED AQUATIC I
~ . BENCH I I Py
~ ~ € } € i t € € } € } I i
~ , ~ • O
1 i 1 ,
~ ~
PLAN VIEW ~ ~ . ~ N c ~
• `•.~p ' \ ~ - MAINTENANCE ACCESS 1D' DAM 1 ~ ~ I 1~1
' ~ " SEE PLAN VIEW FOR 10' VEGETATED 10' VEGETATED ~ ~ O'VEGETATED I I f W ~
- ~ ~ - ~ LOCATION AQUATIC BENCH AQUATIC BENCH ' - IUATIC BENCH " FLOW BYPASS STRUCTURE: ~ 142" RCP ~ ~ 0~ \ - / ~
~ ~ _ ~ ' INV IN (42" RCP) = 252.00 f GP\\ ~ ~ ~ ~ INV OUT (8" ORIFICE= 251.50 A2' ~ ~ ~ ~
1 ~ .f / ' , - NATURAL \ ~ ~ ' ~ / - - GROUND TOP DAM INV OUT (42"GASKETEDRCP)=246.86 ORIFICE ~ N N ~ W 0 = 254.50 TOP BAFFLE = 253.DD ~ ~ U
TOP OF DAM = 254.50 ` 1 - 1 T NATURAL PLATE ~ V ~ Or0 ~
1. i - _ TEMPORARY POOL ~ 3^ GROUND ~ 15" RCP °I~ CO ~
i ~ - ~ ~ ' - ~ PERMANENT POOL 3~ TO BMP #1 L N ~
I i i ~ ~ - - i ' EARTH EMBANKMENT ` ~ U N ~ COMPACTEDT090% PROCTOR MANHOLE FRAME AND ~ Z ~ N
.I 3 , , • ~ COVER -ELEV = 256.75 -24" - (6 ~
~ ~ ~ \ USE FLAT TOP Q ~ ° ° OR 12"CONE L
1' SEDIMENT STORAGE ~ ° ° Uo~N
~ ' , 24" MAX ~ ~ .U 3
I I ' ' ' / • BASIN CROSS SECTION ~2> 3
~ I ` INLET - 42" RCP °
258 258 _ TOP 6..
TOP STRUCTURE @ 256 75 CONCRETE °
~ ' I i / 1 ~ ' B 2E 53 00
• 10' VEGETATED AQUATIC BENCH 256 A I i lv I l ( 2'x2' PRECAST CONCRETE ~ ~ ~ 256 - a
1 \ ~ ~ ~ I i i I I ~ \ OPEN-THROAT DROP INLET • i i I I ° 252.00 TOP BAFFLE @ 253 00 ~ 4" z - INV IN-42"RCP J
' 4" PVC GROUTED IN PLACE 1 ' I' i I 4" PVC SCREW 2~} 254 NATURAL ° 251.50 O
I ~ I I TYPE PLUG T TEMPORARY GROUND INV OUT-8"ORIFICE 'n
) I ~ I i ----------------------------------POOL j I I ~1 ~ ~ 3 ~ ; ; 12" 4' PVC TUBING _ 42" RCP @ 9.38% V J
252 . 10YRHGL 124LFpF ~ ° °a POURED IN 252 - ° PLACE
i I I ~ ~ PERMANENT ~ ~ I i I ' ~ 1--- ------10:1 ------------------------------T--------------- ~ ~r ' 100 YR FLO D 8 ORIFICE TO WET INV 42 ° ° CONCRETE Q W ~
J ~ ! ~ ~ - POOL O ~ I 12" I I ~ ~ 250 ELEV=251.00 POND-INV=25150 ° MM ~ y.L 9~ = 252.00 a ° ° 246.86 I NV OUT - 42" W 'lip
N • 'v ~ 6" PVC BARREL g~~ i - I , , \ J 250 ° GASKETED RCP ~ W 7 OUTLET 42" rn L
t \ 1 1 1 i i~ ~ I ` TO LEVEL 3•~ GASKETED RCP I9" ~ V
i I I ' 12" POURED IN PLACE ~ 248 I 248 6~' Q v J
i i { ~I 11 ; . BOTTOM OF BASIN - ~ ~ I I ANTI-FLOATATION 4" PUC CAP WITH I I ~ ! I 1 CONCRETE
DRILLED HOLE I 12 BELOW PERM. - 103% MIN. 9" COMPACTED #67 STONE W - BASE TO BE INSTALLED UNDER > ~ m INV OUT 132 LF OF 42" GASKETED RCP @ ~ NEW MANHOLE. Q
I r' I 1 246 j \ 1 1 POOL ELEV. ~ - 24s =-245.50 NV IN = SECTION VIEW ~ 5 7
I I i \ I 1 .246.86 W ` L
I I : ~ ~ DETAIL #2 - BMP OUTLET ASSEMBLY BYPASS PIPE HYDRAULIC GRADE LINE FLOW SPLITTING STRUCTURE ~
'i ! ~ I I / I I i ~ I I W~
1 I I FINE GRADE, LIME, ~JU ~Z
I ~ ~ ~ ~ ~ f' I I m~~ LEVEL SPREADER SEED & MULCH LEVEL >Z Q~ Z
i ' i i i LIP ELEV = 250.5D I I ~ SPREADER & SIDESLOPES. 10' DAM W J 10'VEGETATED
i I I I i j 10' V I I I o m 3" LAYER OF AQUA I ! ~ i . i I I #57 STONE G GROUND TOP DAM AQUATIC BENCH " NATURAL GROUND ~ O ~ ~ CC W
I I p~ I I I ~ ~ O~W EX1STl = 254.50 I I I I z~~ LEVEL SPREADER 1 ~ ~ ~ W ~ G Q TOP OFDAM = 254.5D ~ ~ O 0 L.L
i- ~ I t i i o~~ ~ 12" NATURAL LIPELEV=250.50 ¦ , \ CL ~ O
I POOL GROUND ~ I .,r I I' DEPTH 6" PVC BARREL g I I TEMPORARY POOL = 252.93 i - - - ; W BENCH SEE FLOW > Y W
1 FROM WETPOND INV = tARTH EMBANKMENT' . I I .I, !I I _ I I 1. 3'WIDE iNT' _ ~ PERMANENT POOL = 251.5D - Q °~--c - -------------------------------------T--------------------------------- SPLITTING Q 0 >
-LOMPACTEDT090%PROCTOR I STRIP OF ~'y l PROCTOR ~ _ ~ INV= 250.36 114 LF OF 15" RCP > - 1 rJ(`~I FOREBAY STRUCTURE I © INLET PIPE @ 1.00% DETAIL THIS
I , - FILTER 1.5' WIDE ~ ~ ~ PVC BARREL @ 1.00% BARREL @ 1.00°° i SHEET
I FABRIC ~ 36 LF OF 6 I FOOTER ~ ; BOTTOM = 245.50 BOTTOM = 245.50 PROJECT NO. INV = GABION
I a ' ~ I , 249.86 FOREBAY
/ nnninrniinrinninrniir~inrnninnnni~irrnin~inr. 'ALL EMBANKMENTS AND SLOPES UPES ^ OUTLETASSEMBLY-- 1'SEDIMENT ~n~GiQ OV-395
I1 VIV01 RVV, I IVIV OCWVCIVV,C AIVU IVIAIIV 1 CIVAIVI,C. EGETATION Z:>ttUtz IAIL IM155Yittl STORAGE
ZSEE LEVEL SHALL BE STABILIZED WITH VEGETATION INSPECT LEVEL SPREADERS AFTER EVERY RAINFALL UNTIL SPREADER " 10' VEGETATED AQUATIC BENCH SHALL HAVE VEGETATION IS ESTABLISHED, AND PROMPTLY MAKE NEEDED as DETAIL THIS EDGE 0.5' BELOW PERMANENT POOL ELEVATIOI =NCH SHALL HAVE INNER
REPAIRS. AFTER THE AREA HAS BEEN STABILIZED, MAKE PERIODIC SHEET OUTER EDGE 0.5' ABOVE PERMANENT POOL ELI T POOL ELEVATION, AND SHEET# MANENT POOL ELEVATION
INSPECTIONS AND KEEP VEGETATION IN A HEALTHY, VIGOROUS CONDITION.
SECTION VIEW smpl
LEVEL SPREADER DETAIL

a
LAN ti~ m
~ ~1 VEGETATED/
\ JLTER STRIP ~ SCALE.1 50 E: = 5Q' ~ , ~ BMP#2 PLANTING SCHEDULE ~ ~ W °o
~ ETLANbS I l l m /f : ~ \ , ~ ~ ` °`.v. LEVEL SPREADER LIP ace . \ m ' , . ~ .1 UPPER HALF OF VEGETATED SHELF (OUT OF WATER) Q m
, .\1. \ ~ ~ / , ~ LEVELSPREADER.POOL HERBACIOUS ASCLEPIAS INCARNATE 1 SWAMP MILKWEED 4" CONT. 9 ~ ~
,DRAINAGE, GRASSED c I ~ ~ r / `r•~ MAINTEN CE FILTER STRIP ~ . ~ ( / , ' / 9s. CAREX SPP. /SEDGES 4" CONT. 9 N
ND AC SS ~ ,t ~ ' / CHELONE GLABRA / WHITE TURTLEHEAD 4" CONT. 9 a CRINUM AMERICANUM /AMERICAN CRINUM LILY 4" CONT. g ~
EA M NT i ~ ; • ~ ~ / • ~ / \ 1 CRINUM ERUBESCENS /SWAMP LILY 4" CONT. g ~
' DICHROMENA LATIFOLIA /WHITE STAR GRASS 4" CONT. g ~ EUPATORIUM COELESTINUM 1 Vl4LD AGERATUM 4" CONT. 9 ~ ~
/ `e,-' - , ~ / _ : 284 Z ~
' _ : LEVEL i / 10 WIDE 10 WIDE ~ LOWER HALF OF VEGETATED SHELF (SUBMERGED) O
. _ / ~ SPREADER #2t ~ a _ / VEGETATED ' , , / TOP OF DAM , , / AQUATIC VEGETATED ~ ~ EMERGENT CYPERUS ARISTATUS /FLAT SEDGE 4"CONT. 12 ~ w P6• JUNCUSEFFUSUS/SOFTRUSH 4"CONT. 12 ~ ~
~ f t~ / = 278150 BENCH AQUATIC •y., W Q BENCH ACORUSSPP/SWEETFLAG 4"CONT. 12 ~ a
_ PELTANDRAVIRGINICA/ARROWARUM 4"CONT. 12 - _ _ ,TENpNCE ~ ~ SAGITTARIA LANCIFOLIA / BULLTONGUE 4"CONT. 12 m
O - ~ OUTLET / ~ - INp~ MpINS~MENt ~ PLANTINGS TO BE INTERMINGLED AND DISTRIBUTED UNIFORMLY ~o
- ~ 2~ 7~, z~ ~ STRUCTURE ~ 278 i ~ ' pCOE$S~ IN SHALLOW WATER AND DEEP POOL AREAS, APPOXIMATELY 24"-30" ON CENTER
~ ~ ~ 7Q M1 / ~ ~ w ~ \ r IR ° 276 , .
\ , , • - ,
m
• (O M N ~ O o
d ~ , ~ `ti\ ~ , FLOW PATH..,.. . , i FOREBAY ~ 10' VEGETATED AQUATIC BENCH 2'x2' PRECAST CONCRETE
. ' ' ELONGATION" .c \ / / / GABION BERM ~ ~ - ~ry OPEN-THROAT DROP INLET o o ~ N ~ F z
- 4" PVC GROUTED IN PLACE R' w o J ° ° W z °z m
. ` - H ~ , / i ~ ~ ~ 186'.. o f 4"PVC SCREW ~n W d~z~w~° Jo ~ FOREBAY ~ TYPE PLUG °o }zw°w~}zmw3°o
\ / 1 1 \ N T TEMPORARY GABION WEIR ~ ~ . ----------------------------------POOL--- ©~z o Q o W ~ a ¢ z ~ ~ w Q OwaU }
~ ~ ~ " \ ~ .3.1 12" 4 PVCTUBING W ~ 3~aw~3~ttoo~
/ / ` . ~ 89 270 0 , F" a ~w aaQpomaw
i / ~ 1\ I ! < > ~ 71 272 /iy/ s// N ry ~t 10:1 --------------T--PERMANENT ~ z o~ w N o z o= o w x • - - z ~ - ~ m m ~ 2 rye, / - POOL ~ ] a oz~~oz~LLzo 12 ~ _ }W
• F J LL O 2 ,ye°0 - 294 ~ 6 PVCBARREL g~~ 0 Z ° oaow~~woz~a
I L r _ , _ _ . I U 0 ~mrWnWr~noa3~m~
I ~ , . \ ` 282. • _ 288 29 29d- ~ ~ ~ ~ ~ U Nz~wo~omzoo 88 SPREADER ._y i~ 3;1 FzUZaz~}omw
I I / ~ ` ~ 284 ~ ' • 12" POURED IN PLACE ANTI-FLOATATION L BOTTOM OF BASIN _ 4" PVC CAP WITH
I I , / , ~ ; ' CONCRETE DRILLED HOLE ~
I . - 12"BELOW PERM. Q p
: / , POOL ELEV. ~ o - _f ~ N
1
, 1 ~1 11 ~ 1 \ DETAIL #2 -BMP OUTLET ASSEMBLY ~ ~ o w G! ~ ~ ~ o
1• ~ ~
\ : ~ I I I , U
_ - I ~ ~ SCALE. 1 - 30 - - ~ ~ W W
~ I ! ~ 4 I II ! m ~ - \ Z Q
~ ~ I ~ ~ ` . - - FILTER STRIP ' 4 , ' ~ I I / ~ 10' DAM w ~
/ ~ ~ ~ m r' ~ - ~a,N 10'VEGETATED 1D'VEGETATED ~ ~ 00
P m ~ / ~ i I ~ gCC~M LEVEL AQUATIC BENCH" AQUATIC BENCH" ~ ~ U ~ U J LEVEL
1 I F qi I ~ / ~ i I I SS\N~ _ SPREADER SPREADER . a~ a W O W uUi Z
1 r III ~SF~N c ? r ~ I I . I I I I 1. NT TOP DAM
I I I I I / ,1 ~ I a I I I I I TOP OFDAM = 278.5D = 278.50
1.. I I i I u, 1 ~ I I ~ I ~ I I NATURAL
I I / ~ ~ i i_ I I r 1 I I I I I I " GROUNDL 3, TEMPORARY POOL 31 GROUND PERMANENT POOL- EARTH EMBANKMENT' ESSIp~,• l~~
I ' I I I I: 1 ' I I I I . I / 1 COMPACTED TO 90% PROCTOR = ~ ~ "9 =
1 1 I I I I `1 ' _ I . I Y / 37 r 31 , - SEAL -
_ 7 I / I I,~ II . I I '
I I I 33242 1' SEDIMENT STORAGE ~ ~ ;
I
I pd / ° ~ s / ,y BASIN CROSS SECTION ~'%~~FL A•~~~~`
I I ~ / I ~ / r
~ I I ~ I ! ' ' I I I / TOP OF DAM
q ' I ~ I = 278.50 ~IW m
I I I : I I ' I
I I ~ - ~ D ~h FINE GRADE, LIME, ~ ~ ~ - ~ ~ ~INgGE o m LEVEL SPREADER SEED, & MULCH LEVEL ~ ~ N
~ I ~ i i , r ~ I I ,I gNDgCC SS~SEMEN~ oi~ LIP ELEV = 273.5D SPREADER & SIDESLOPES. C ~
r . . _ I - NT ~ ~ OIL 3" LAYER OF p ~ 01
I I L:: ` I , OUTLET I I ~ I' STRUCTURE ~ ~ oh #57 STONE EXISTING GROUN ~ O O
I C--------~ r I - 276.70 12" ~ ~ p~ x
y 77 LF EMERGENCY WEIR' I . ~ POOL ~ ~ (6
914 I I DEPTH 6" PVC BARREL ~ ~ ~ W , ,,~/9"'j//~~/~~ FROMWETPOND C ~ ~ 0
. r ~ ~ 3'WIDE ~ p '3 pp U ~,~/~'j /f~/' ~ ; / STRIP OF V (nNO~p ~
, ' FILTER °I~ pp N
/ FABRIC 1.5'WIDE `N~'~
I FOOTER ~ U N ~ ~Z~ ~
- ,.I ~ , ~ ~ I irJ~^~
/ Zv Q E
r / WDi BOTTOM ELEV ` I ~ I / , ~ = 269.00 ~ I BOTTOM ELEV MAINTENANCE: `o o ~ ~ =269.00 ~ I INSPECT LEVEL SPREADERS AFTER EVERY RAINFALL U 0 U
I ; ~ • I N / o 0~ UNTIL VEGETATION IS ESTABLISHED, AND PROMPTLY O ~ U 3
Cy ~ ` I I r Q I, MAKE NEEDED REPAIRS. AFTER THE AREA HAS BEEN O 3 STABILIZED, MAKE PERIODIC INSPECTIONS AND KEEP
. I I I N / , D / I / % 1 r C I I I N / 0 186' m~ I VEGETATION IN A HEALTHY, VIGOROUS CONDITION.
1 ,y r I I ~ r / ~
, _ r 1 I t , ~ ~ I ~ I ~o~ FOREBl4Y I LEVEL SPREADER DETAIL
r 1 I I ~ ~ ; I I N I N / 10' WIDE VEGETATED 1 1 I I ~I ~1 I I` p ~ / AQUATIC BENC :VEGETATED I 7 C BENC L
/ I I q v , r I I ~ ~ ~ z
I _ ~ I ~z , ~ , 69 ~ D Q 1 ~ ~ is i - ~1 < I , _ I ~ D 27 Z J
lr- ~ ~ I' I ~ ~ I I m m / / ; 71 272 I ~ ~ ~ 'I , ' I _ SEQUENCE FOR CONVERSION OF TEMPORARY SEDIMENT O
,~•i I BASIN INTO BMP:
J ~ / ~ ~ ) z
~ I I , z ~ Z8o- ~~ti I 1. ONCE ALL AREAS DRAINING TOWARD BASIN ARE STABLE AND ~ W
- m z ~ ~ ~6/ I VEGETATION IS FULLY ESTABLISHED EVERYWHERE, SEDIMENT 0 N SEDIMENT MUST BE CLEANED FROM SEDIMENT BASIN, AND MM
~m I ~ a ' I ~ I - ' ~2~~L I POROUS BAFFLES REMOVED. ANY DAMAGE TO EXISTING DAM W W
282 MUST BE REPAIRED AT THIS TIME. ~ ~Z
, - - - . 2. GRADE AQUATIC BENCH, AND EXCAVATE PERMANENT POOL TO ///n~ • ~ ' ' ~ 2$$ 29(~ ' PROPOSED FINISH GRADE. V J
I I 3. INSTALL FOREBAY WEIR, SUBMERGED OUTLET ORIFICE, AND DRAIN W
' ` VALVE. MM
, I I I. I i I I I 4. INSTALL AQUATIC BENCH VEGETATION AND SEEDIMULCH ANY > ~ W AREAS DISTURBED DURING BASIN CONSTRUCTION L.L 7
,
ST ' MWATER WETPOND'# ARAINAGE AREA: ` ~ r I I //W ~ L
~ I I , I ' VJ ~ O
IMPE VIOUS: 9.071 AC - C -'0 5 W J W ~
VEGETATED: 26.518 AC - C = 0.35 10' DAM ' ,1 r 10'VEGETATED )'VEGETATED ~ ~ Z Q W
' TOTAL: 35.589 AC - CC = 0.50 - LEVEL SPREADER AQUATIC BENCH " UATIC BENCH " FLOW PATH ELONGATION (A GABION BERM -TOP MUST NATURAL GROUND ~ ~ W ~
' LIPELEV=273.50 TOP DAM _ , EMERGENCY = 278.50 , BE AT TEMP POOL ELEV O O ~ W TOP OFDAM = 278.5D 5
WEIR = 278.70 _
I NATURAL CL GRO ~ . I UND / BENCH CL ~ ~ ~ Q TEMPORARY POOL = 276.7D ~ O O BENCH ---------------------------------i----
INV= ! tARTHEMBANKMENT" PERMANENT POOL = 275.OD ~ - _ INLET PIPE
I COMPACTEDT090%PROCTOR - 272.5D ~ I , I \`~7 _ ~ ~ FOREBAY INV=274.58 N ~ Y O W
1.00% , ( , ~ ~ - LF OF 6 PVC BARREL @ ~ C-_ / 166 ~S ~ ~ ~ v J
• INV = INV = ~ BOTTOM = 269.00 ~ BOTTOM = 269.00
, 274.16 274.16 GABION OUTLET ASSEMBLY 1' SEDIMENT J FOREBAY PROJECT NO.
'ALL EMBANKMENTS AND SLOPES SEE LEVEL SHALL BE STABILIZED WITH VEGETATION SEE DETAIL THIS SHEET STORAGE WEIR
SPREADER 10' VEGETATED AQUATIC BENCH SHALL HAVE INNER >,VE INNER OV-395
~ i T n ~ n i n i n r~ ~ n a ~ n n n n ~~TO~~ Tu~~ ~ ~~~..~.~~.~r ~.,.r~~.~
X I I C I UR/-%IIm/'1VC f'1RC/-% IVII`'1r SHEET v tuutU.oatwuvrtnivinvty rUuLtLtvH uv,nvu OUTER EDGE 0.5 ABOVE PERMANENT POOL ELEVATION IVIV, HIVU ELEVATION
SCALE: 1" =100' SHEET # SECTION VIEW
SMP2

a
~
1 f ~ ~ 10'VEGETATED 1D'VEGETATED 10'DAM m N
t AQUATIC BENCH AQUATIC BENCH
M ~ f ~ : ~ pry - ~ ~ r ~ r ~ ~ i , ~ a.:, M ~ s t..i.. o
, ~ ~ - TOP DAM 0 m
' ° ° ' TOP OFDAM = 294.50 = 294.50 ~
s I I S 1 ' NATURAL
t ~ ~ ~ 3~0 o , ~ I I GROUNDL X37 TEMPORARY POOL 3~ GROUND a 3'7 ~
° ~ _ PERMANENT POOL cn _ _ _ EARTH EMBANKMENT * , i COMPACTED TO 90% PROCTOR ~
\ , tiV I I Z
i I I / 0 ~
\ \ \ I I 1' SEDIMENT STORAGE ~ ~
~ _1 I ~ ' W cwn
I ~ - I I t ~ Q BASIN CROSS SECTION a
I I
I I I ~ ' , m
_ I - - I I I _ ~ 0
I ' _ • / , M i . - I .,.I m 1D' VEGETATED AQUATIC BENCH 2'x2' PRECAST CONCRETE ~
I . ' ' I ' I I OPEN-THROAT DROP INLET ~
~A I - ~ I I 4" PVC GROUTED IN PLACE m 4" PVC SCREW (O ~ ~ N ~ O ~
w ~ TYPE PLUG ~ -------------------------------t-TEMPORARY i
~ ! I = POOL ^
. I ~ X3'1 12" 4" PVC TUBING z LL Wow ~ ~ oo ~ZZ~Wz
i ~ i ~ mz JOOw~mm -__-__10:1 ------------------------------t--PERMOA LENT a o z U w J~ i o = z ~ °o o att~~~z~nw3LLo
. _ I - STORMWATERWETPOND #2 DRAINAGE REA:
- 6"PVC BARREL N~C7 a owLLWa>z~~w~
o :I IMPERVIOUS:1.697 AC - C = 0.95 ; ' VEGETATED: 3.349 AC - C = 0.35 L, ~ W ~ ~~awW~~~° o~ TO LEVEL i x~Z ~ LLouooao~owi
TOTAL: 5.U46 AC - Cc = 0.5$ SPREADER 12"POURED IN PLACE C7 z o ~ F ~ ~ z N z W ~ ~ BOTTOM OF BASIN H 3 z o~ F X w F LL
. ~ I ANTI-FLOATATION * L 4" PVC CAP WITH ~ ~ ~ ° ~ ? > w N LL J z o
1 ' I ; CONCRETE z v a DRILLED HOLE p ~ ~ oQO~~~woZN° 12"BELOW PERM. U p Q~nZZ,'noQ3°W~
1 o . I : POOL ELEV. U `~zuz~io>o~w
, m.. \ - , ~JJWJ F~m ZOO
DETAIL #2 -BMP OUTLET ASSEMBLY w
~ , 0
BMP# 3 PLANTING SCHEDULE ~ o
W, I I UPPER HALF OF VEGETATED SHELF (OUT OF WATER) ~ N
HERBACIOUS ASCLEPIAS INCARNATE /SWAMP MILKWEED 4" CONT. 8 ~ ~ o
~ w ~ ~ CAREX SPP.1 SEDGES 4" CONT. 8 ' ~ LL O
I , CHELONE GLABRA / WHITE TURTLEHEAD 4" CONT. 7 = CRINUM AMERICANUM /AMERICAN CRINUM LILY 4" CONT. 7 ~
CRINUM ERUBESCENS /SWAMP LILY 4" CONT. 7 Q
r DICHROMENA LATIFOLIA /WHITE STAR GRASS 4" CONT. 7 w w EUPATORIUM COELESTINUM /WILD AGERATUM 4" CONT. 7 z Q
f~ ¦ .e ;t ooo
• - ° LOWER HALF OF VEGETATED SHELF (SUBMERGED) w ~ > -
EMERGENT CYPERUS ARISTATUS /FLAT SEDGE 4"CONT. 11 ~ ~ m _ JUNCUS EFFUSUS / SOFTRUSH 4"CONT. 10 ~ ~ ~ J
• ACORUS SPP /SWEET FLAG 4"CONT. 10 ~ ~ ~ Q ~ Q ~ Q
PELTANDRAVIRGINICA/ARROWARUM 4"CONT. 10 a~ a W o W ~ Z SAGITTARIA LANCIFOLIA/ BULLTONGUE 4"CONT. 10
. *PLANTINGSTOBEINTERMINGLEDANDDISTRIBUTEDUNIFORMLY
10' WIDE , f ~ ~ L. 1 . IN SHALLOW WATER AND DEEP POOL AREAS, APPOXIMATELY 24"-30" ON CENTER
VEGETATED AQUATIC ~ J ~ l \11~~11111111/~~ CARP
_ BENCH ~ ~ I I . ~ESSI 4~
I I; ~ I .I m
130' ~ FOREBAY ~ ' I - ~Iw ~ SEAL
¦ / I I r 1 I i _ FINE GRADE, LIME, ~m LEVEL SPREADER 33242 . o SEED, & MULCH LEVEL
_ _ 1 1 ~ I I ~I~ LIP ELEV = 288.5D SPREADER & SIDESLOPES. % ~ ~w ~INEER•'• Gj~
.w-~`-~`-~`- ~ ~RAI~A6E; M~NTENANCE 0~ 3"LAYER OF p PLAN VIEW 'qj~~''~••~'•GP~~~~
- / ANDACC ' _ . ~ - ~ ~ I I ¦ - _ 1? , oh #57 STONE EX1S11NGGROUN ~~i ~eLiiA~~~~~~~~
_ a~ I I , 12" PIPE 105
POOL PIPE 1D4 24" GASKETED RCP
- z9o z ~ . ~ ~ ON , I, I , ~ ~ ~ ? ~ ~ , I DEPTH 6" PVC BARREL 15" GASKETED RCP
- ~ I. I I ~ ~ - CL STREAM ' ~ 3' WIDE FROM WETPOND TO BMP #1 _ 5 a ~ / (~O STRIP OF r,( ` O
- NF \
~ 1 I I, I 294 29Z \ ~ GJ ' ~ FABRIC ^ 1.5' WIDE ~ o ~ 4) ~ FOOTER ~ C ~
~ ~ ~
zso a ~ - - \ ~ A ~ ze / MAINTENANCE: ~ W ~
INSPECT LEVEL SPREADERS AFTER EVERY RAINFALL UNTIL VEGETATION ORIFICE c ~ O PLATE
~ ~ ~ - ~ ~ _ ~ ~ i - - - - \ ~ ~ \ IS ESTABLISHED, AND PROMPTLY MAKE NEEDED REPAIRS. AFTER THE d WITH 8" D ~ ~ ~ X AREA HAS BEEN STABILIZED, MAKE PERIODIC INSPECTIONS AND KEEP = O ~ c0
VEGETATION IN A HEALTHY, VIGOROUS CONDITION. a ORIFICE p. ~ ~ ~ ~ ~
OUTLET LEVEL STRUCTURE SPREADER#3 a ~ C 0
LEVEL SPREADER DETAIL ° a y U ~ ~ a ~ a~
LN('7.~
SCALE: 1" = 50' a ~Ucv ~
LINING: SEED AND NORTH FLOW BYPASS STRUCTURE: ~ Z ~
WETPOND # 3 BYPASS SWALE PROFILE SCALE:1°= 30' 4'x4' JB -TOP = 294.16 AMERICAN GREEN S75 OR ~ APPROVED EQUIVALENT INV IN (24" GASKETED RCP) = 291.26 Q ~
INV OUT (8" ORIFICE= 291.26 p 0 ~ ~
RIPARIAN ROAp NATURAL 10' INV OUT (15" GASKETED RCP)= 291.26 U 0 • • N DITCH BOTTOM CAST IRON GROUND TOPSTRUCTURE=294.16 O ~ U 3
n _ i 300 isu'r'r~R = 293.63 FRAME AND O ~ ~ ~ ~ GRATE O 3
SCALE. 1 - 3O EMBANKMENT ~ ~ i i 3 ~ ~ : ; 3'1 -TOP = 294.16 ~
! ,III-L-III 6' MIN 4' III III= p a
/ 296 JB 104.:_ -III-1 I III I I III-11I III- a PIPE °
- - / h RIM = 294.16 105 ORIFICE
° INV IN = 291.26 10' WIDE VEGETATED ~ PIPE 104 ~ PLATE z TO LEVEL SPREADER 8" ORIFICE 8"ORIFICE a INLET - 24" 7 Q
AQUATIC BENCH Q / IN1/OUT(85')=291.84 • 1 4 i BOTTOM = 2911.26 ~~p - - - INV = 291.26 GASKETED RCP L J
- 1 296 10YEAR STORM GR _ E - ENANC - _ ~ FLOW DEPTH =0.31' ,1`~G/ ; a.
1 MAtNT T - ~ ~ 1s I - ~ - ~ - ~ - - ~ - ~ - ~ ~ - Rp,INAGE, EASEMEN ~ ~i p CESS ~ SECTION A-A ~ ~ 0 ~ SCALE: 1" = 4' as I I
- ANp A~ ~ A BO"T"TOM OF SWALE i _ _ ~ ~ 6.. LOWE~iTHAN 2.00°(°
- - PIPE 104 ~ ii ~ _ _ 294 NATURAL GROl1ND ~y M z.oo~~o i i z
~ z~ ~ ~ PIPE 106 - / , J PIPE 106 I I
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