20061617 Ver 5_Modifications_20120717

WITHERS & RAVEN EL
ENGINEERS 1 PLANNERS I SURVEYORS
iii MacKenan Drive
CARY NORTH CAROLINA 27511
[phone]
FAX [phone]
To NCDENR DWQ
Wetlands and Stormwater Branch
512 N Salisbury St, 9`h Floor
Raleigh, North Carolina 276o4
WE ARE SENDING YOU
❑ Shop Drawings
❑ Copy of Letter
LETTER OF T'ANSMITTAL
DATE
JUl 16 2011
108 NO
02100307
ATTENTION Annette Lucas
PHONE# 80 6 81
RE Wendell Falls
O Lp — l lv 11 V5
Permit Modfication Request
1
® Attached []Under separate cover via _
® Prints ❑ Plans ❑ Samples
❑ Change order ❑ Diskette ❑ _
the following items
❑ Specifications
COPIES
DATE
NO
DESCRIPTION
1
Permit Modfication Request
1
Revised BMP 2 1 Construction Plan
THESE ARE TRANSMITTED as checked below
❑ For approval ❑ Approved as submitted
® Foryour use []Approved as noted
❑ As requested ❑ Returned for corrections
❑ For review and comment ❑
❑ FOR BIDS DUE 20 ❑ PRINTS RETURNED AFTER LOAN TO US
❑ Resubmit
❑ Submit
❑ Return
_ copies for approval
copies for distribution
corrected prints
REMARKS
COPY TO Ale SIGNED Ken jesneck, PE
IF enclosures are not as noted kindly notdy us at once
G �r�

WITHERS �" RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
July 16 2012
Ms Annette Lucas PE
Environmental Engineer
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Wetlands and Stormwater Branch
512 N Salisbury Street 9h Floor
Raleigh North Carolina 27604
Re Stormwater Management Plan Modification
Wendell Falls
DWQ #20061617
W &R Project #0210307
Dear Ms Lucas
This correspondence is a request for a Stormwater Management Plan Modification for a revision to
BMP 2 1 in Wendell Falls Subdivision located in Wendell Wake County North Carolina A
revised construction plan sheet for BMP 2 1 is attached The reason for the revision results from
the discovery during the encroachment permitted with Progress Energy that their easement was
incorrectly located during the early development stages of Wendell Falls After the easement
monuments were located the easement had shifted approximately 14 feet to the south Based on
the correct location of the easement Progress Energy required that BMP 2 1 be relocated
Also a request is made to transfer the permit to the new owner
Redus Raleigh Housing LLC
8540 Colonade Center Drive Suite 111
Raleigh North Carolina 27615
Attn BIII Honaker
Agent for Owner and primary contact
Pinellas Corporation
7008 Harps MITI Road Suite 103
Raleigh NC 27615
[phone] direct
[phone] cell
111 MacKenan Drive I Cary NC 275111 tel [phone] fax [phone] www withersravenel com I License No C 0832
1410 Commonwealth Drive I Suite 1011 Wilmington NC 28403 1 tel [phone] fax [phone]
7011 Albert Pick Road I Suite G I Greensboro NC 274091 tel [phone] fax [phone]

Please call me or email me at klesneck@withersravenel com should you have any questions
concerning this correspondence
Sincerely
WITHERS "ENEL
Kenneth L Jesneck PE
Project Manager
CC Joe Lassiter — Pinellas Corporation
WITHERS &- RAVENEI. Page 2 of 2

ri
R(
#4 REBAR TYP. Qi
INTERMEDIATE WELDED
/4 REBAR RING TOP OF MANHOLZ m
RISER \ \\
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1
I
T #4 REBAR RING 1
EE NOTE FOR �'T(
SPACING \ WENDELL
r \ STORM WATER
EASEMENT
#4 REBAR TRASH RACK (ABOVE)
0
.o
ANCHOR TRASH RACK TO MANHOLE WALL WITH FOUR EQUALLY '
SPACED HOT- DIPPED GALVANIZED STEEL CLAMPS EACH CLAMP
ATTACHED TO MANHOLE RISER BY 2 -3 xt /4" CONCRETE ANCHOR
BOLTS.
NOTE ON TRASH RACK REBAR SPACING: I \
BARS SHALL BE EQUALLY SPACED; 15 BARS (14 OPEN 1O' EMERG & SPACES) AROUND MANHOLE RISER. (EACH SPACE 13.2 "t
AT �!4 REBAR RING).
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
VENT
\SPILL A
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IL (Nr'mS)o
0 1
I
SCREEN ACCESSIBLE THROUGH
DOOR
-V
e
FLOAT e
OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN
SHOWN I
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER I • .
FLEXIBLE JOINT
BMP SKIMMER DETAIL - BMP #2.1 (FOR SEDIMENTATION & EROSION CONTROL)
NTS
RCP RISER
1' MIN. FREEBOARD
WATER LEVEL DURING STORM
TRASH RACK\
- 1 11 =1 11 =1 I I-
=1
PEAK FLOW ATTENUATION POOL =
I -I I
.;,-
'5'
PERMANENT POOL
DEPTH VARIES FOR HIGH/LOW MARSH -_
TEMPORARY SKIMMER -I I (_ ` ' • -) �' -
1=
MICRO -POOL -' 11 =1 III - III - III - I I -I I I-
-
ANTI - FLOATATION DEVICE
ANTI -SEEP COLLAR
OTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL
BE INSTALLED PRIOR TO THE BEGINNING
OF OVERALL SITE GRADING AND SHALL BE
W UTILIZED AS A SEDIMENT CONTROL DEVICE
DURING ROADWAY AND UTILITY CONSTRUCTION. CROSS SECTION
1 31 ONCE SITE HAS BEEN STABILIZED AND GRADING
IS COMPLETED THE BASIN SHALL BE CLEANED
N OUT AND STABILIZED. TEMPORARY SKIMMER TO.
N REMOVED AT CONVERSION.
N
N
e
0
CONSTRUCTED WETLANDS DESIGN
TOP OF DAM EL. 224,0
BARREL
48 LF 30" "O -RING GASKET"
01.25%
VELOCITY = 10.40 FT /S
No.
DIMENSIONS
ELEV.
NORMAL POOL
5,468 SF
220.00
POND BOTTOM
3,963 SF
218.50
TOP OF DAM WIDTH''
5 FT.
224.00
ANTI-SEEP COLLAR
78" x 78"
N/A
1 -YEAR STORM ORIFICE
1.5" ORIFICE
220.00
RISER. - DIA AND TOP
4' DIA.
221.72
OUTLET PIPE INVERT IN
30" RCP
217.00
OUTLET PIPE INVERT OUT
30" RCP
216.40
No.
Revision
Date
B
1
PER WAKE' . CO. COMMENTS
10/25/07
JAC
2
STORM AND UTILITY REVISIONS
12/12/07
JAC
3
PER TOW COMMENTS
01/18/08
JAC
4
RELOCATED BMP 2.2
08/29/11
KLJ
1.5` ORIFICE DRILLED
THREADED
IN CAP? SCREEN TO
END CAP
Designer
WEC
Scale
AS NOTED
Drawn By
Date
WEC
09/97/07
Checked By 1
Job No.
W &R
1 205261.04
5 LF 383A OF \ DE
DE
° RI L 225:0 STO WA Eh
I�' 1 = 221.9/� E. T
1 V OU = 22187 \
PF�iEV10 TI N LO O o
-- OF o
i 118
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1 _ RCP R AS E
\ AS \ 4
F HIGH A
10 +2191. 1904 SF
FOR WN OF
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+ 21 E RM A ER
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+2 .5 A
1919
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+218.5
0 TEMP.
+2 8.5 e C ST. &
+221.
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EASEMENT \
IGH ARSH
MhC 0 P 00 1904 SF \
8 -�0 SF
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SCALE: 1 " = 30'
S
North Carolina
TOP OF RISER STRUCTURE ELEVATION = 221.72
SEE TRASH RACK DETAIL
4' DIA PRECAST RISER
NOTE:
PLACE STEM SUPPORTS
n -n AT 3' FROM BASE
GROUT EACH SIDE
4790* EL I._�_ . ` A, '
ORIFICE ELEVATION = 220.0 3 4x4" TEE JOINT SEALED WITH A -LOCK NEOPRENE
4 xl.5' TAPPED k GASKET CAST IN MANHOLE WALL
CAP. SEE DETAIL
4' DIP
4" NRS GATE VALVE
LEAVE END OF GATE 30" O -RING GASKET" RCP
VALVE OPEN.
4 "x4" TEE
BASIN BOTTOM ELEVATION = 2185
\\ \\ \\ \\ \\ \\ \\ PAVED INVERT .`:•4, GROUT 6"
ee %fie %fie %fie% • "`�''.�
4 L
7' -0"
RISER & DRAWDOWN DEVICE DETAIL - FOR BMP 12.1
NTS
THREADED
END CAP
END 4"
NEW
1.5" ORIFICE DRILLED
IN CAP. SCREEN TO
PREVENT CLOGGING.
SECTION VIEW
VIEW
CAP END VIEW
AD.
3/4" RAD.
o (�
4'
1.5"
2"
1.5` ORIFICE DRILLED
THREADED
IN CAP? SCREEN TO
END CAP
PREVENT CLOGGING.
CAP TOP VIEW
ORIFICE CAP DETAIL
BMP 12.1 - CONSTRUCTED WETLAND
NTS
14 REBAR 12"
112" PREFORMED JOINT
FILLER, 12" WIDE
8"
ELEVATION SECTION \� J
2000 PSF MIN.
BEARING CAPACITY SEE BMP SECTION FOR SIZING DATA
BENEATH COLLAR
TYPICAL ANTI -SEEP COLLAR - BMP 12.1
NTS
EARTHEN BERM EMERGENCY SPILLWAY Q3
EL. = 224.00
-1TI= ---- ; .
IM �'-
_I
r 10' 1
NTS
CONSTRUCTED WETLANDS NOTES:
I. IF WEIMP WAS USED A$ SEDIMENTATION BASIN OR TRAP, SIN MUST BE
COMPLETELY CLEANED OUT AND CNADED.
2. SUBSURFACE SHALL BE COMPACTED CLAY TO MINIMIZE INFILTRATION RATE.
3. IN AREAS TO BE TO BE PLANTED, 3 TO 6 INCHES SHALL BE ADDED TO ALL DEPTH
ZONES IN THE WETLAND FROM 1 FOOT BELOW TO 6 INCHES ABOVE THE NORMAL
STORMWATER CONSTRUCTED WETLAND PLANT SCHEDULE POOL ELEVATION.
4. WETLAND BASIN SHALL BE STABILIZED WITH HYDROSEED OR OTHER METHOD TO
ZONE 1 ESTABLISH VEGETATION COVER IN THE WETLAND BASIN WITHIN 14 DAYS OF
82 CA Carex spp. Sedges INCH.
TRUCTION. PRIOR TO HYDROSEEDING, SOIL SHALL BE SCARIFIED AT LEAST ONE
54 CE Ceratophyllum demersum Coontail 5. WETLAND DRAIN SHALL BE FULLY OPENED FOR NO MORE THAN 3 DAYS PRIOR TO
55 LE Lemna sp. Duckweed THE PLANTING DATE.
82 PO Potamogeton pectinatus Pondweed 6. PLANTS SHALL BE PURCHASED FROM LOCAL NURSERIES AT LEAST 3 MONTHS IN
ADVANCE OF PLANTING.
53 PV Peltandra virginia Arrow Arum 7• PLANTING SEASONS SHALL BE FROM EARLY APRIL TO MID -JUNE. SOME SPECIES MAY
30 VA Valisneria americana Wild Celery BE PLANTED IN EARLY FALL.
ZONE 2 & SOURCE NURSERY SHALL BE CONSULTED FOR OPTIMAL PLANT SPACING.
38 AC Acorus calamus Sweet Flag 9• PRIOR TO PLANTING, WETLAND SHALL BE STAKED AS TO ITS RESPECTIVE DEPTHS AND
GRADES VERIFIED AFTER SHAPING OF THE BOTTOM OF THE WETLANDS.
82 AV Andropogon virginicus Broomsedge 10. POST- NURSERY CARE OF WETLANDS SHALL INCLUDE FREQUENT WATERING, FERTILIZING,
71 PA Panicum vergatum Switchgrass AND SHADE UNTIL THE PLANTS ARE PLACED IN THEIR RESPECTIVE WETLAND AREAS.
11. PLANTS SHALL BE PLANTED IN ACCORDANCE WITH STANDARD NURSERY PRACTICES.
12. NORMAL POOL LEVEL SHALL BE MONITORED UNTIL THE PLANT MATERIAL HAS BEEN
NOTES ESTABLISHED. IN DRY PERIODS, WATER SHALL BE ADDED TO MAINTAIN MOIST
NOTE( S): CONDITIONS.
13. ALL PLANTS IN WETLAND AREA SHALL BE 4" POTTED PLANTS.
1. ALL PLANTS IN WETLAND AREA SHALL BE 4" POTTED PLANTS 14. ALL PLANTS SHALL BE PLANTED AT LEAST 10' O.C.
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WITHERS RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: 919 - 467 -6008 www.withersravenel.com