20061804 Ver 5_Stormwater Site Plans_20161116

"SITE" RIVER DELL
ELEMENTARY
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THEREFORE, EVERYONE WHO HEARS THESE WORDS OF MINE AND PUTS THEM INTO PRACTICE IS LIKE A WISE MAN WHO BUILT HIS HOUSE ON THE ROCK. MATTHEW 7:24
Civil Engineering=
Stocks Engineering, P.A.
801 East Washington Street
Nashville, NC 27856
252.459.8196 (v)
252.459 8197 (f)
email- mstocksostocksengineering.com
Contact= J. Michael Stocks, PE
Surveying:
True
urveying-
True Line Surveying, P.C.
205 West Main St.
Clayton, North Carolina 27520
919.359 0427 w)
Contact: Curk Lane, PLS
Owner/Developer=
The Riverdell Company
4880 NC 42 East
Clayton, NC 27520
Phone [phone]
www. flo wersplan to tion. com
Contact Rebecca Flowers
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CONSTRUCT/ON
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FILE NO. 2016-043
HORZ. SCALE: 1"=50'
VERT. SCALE: 1"=5'
CE -01
CURVE TABLE
CURVE
LENGTH
RADIUS
DELTA
TANGENT
CHORD DIRECTION
CHORD LENGTH
Cl
83.22
395.00
12'04'15"
41.76
N7017'19"W
83.06
C2
134.10
200.00
38'25'04"
69.68
S57'06'55"E
131.61
C3
164.79
200.00
47'12'35"
87.40
S14'18'05"E
160.17
C4
80.83
100.00
46'18'35"
42.77
N13'51'05"W
78.64
C5
107.28
100.00
61'28'02"
59.46
N67'44'24"W
102.21
C6
1 112.90
1 200.00 1
32'20'31"
58.00
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111.40
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Civil Engineering=
Stocks Engineering, P.A.
801 East Washington Street
Nashville, NC 27856
252.459.8196 (v)
252.459 8197 (f)
email- mstocksostocksengineering.com
Contact= J. Michael Stocks, PE
Surveying:
True
urveying-
True Line Surveying, P.C.
205 West Main St.
Clayton, North Carolina 27520
919.359 0427 w)
Contact: Curk Lane, PLS
Owner/Developer=
The Riverdell Company
4880 NC 42 East
Clayton, NC 27520
Phone [phone]
www. flo wersplan to tion. com
Contact Rebecca Flowers
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THEREFORE. EVERYONE WHO HEARS THESE WORDS OF MINE AND PUTS THEM INTO PRACTICE IS LIKE A WISE MAN WHO BUILT HIS HOUSE ON THE ROCK. MATTHEW 7:24
SCALE: 1 " = 40'
0 40 80 100 120
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�i NG I NE 5������.
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�i-17-11
6 45AC��
MASTER
GRADING
REVISIONS
FILE NO. 2016-043
HORZ. SCALE: 1"=40*
VERT. SCALE: N/A
CE -04

TOP DAM 259.50
CENTIPEDE SOD GROWN -
ON SANDY SOILS W17H AN
INFILTRATION RATE OF 2
INCH/HR OR GREATER
BIORETENTION AREA PROFILE
NOT TO SCALE
4" WP
2" CHOI
#8 OR
.} 12" MAX. -
1 PONDING \�
4" C.O. DEPTH V10- )i( -ICV/ TOP OF BIORE7ENTION 257.00
24" FILL SOIL MEDIA
'v 85-88% WASHED SAND
8-12% FINES (SILT & CLAY)
3-57 ORGANIC MATTER
PHOSPHOROUS INDEX < 30
PERFORATED PVC SOCK DRAIN
4" C.O.
PROPOSED GRADE
CLASS B RIP RAP LINED ^5
FOREBAY 12" IN DEPTH
2" CHOKING STONE
#8 OR #89
Conversion Procedure - Sediment Basin to Bioretention Area
1. After the site is completely stabilized, contact Stocks Engineering ® 252-459-8196 for verification
of completion and stabilization.
2. Contact Thad Valentine of NCDENR-Land Quality Section CSD 919-791-4200 for approval to remove
all temporary erosion control measures.
3. Upon approval from NCDENR-Land Quality Section, begin the conversion of the bioretention area
from a temporary sediment trap to a permanent BMP as follows.
4. Construct silt fence around the toe of the interior side slope of the bioretention area (BA) to
protect the BA from sediment contamination during the Conversion Procedure. Leave an opening at
the downstream end of the BA just wide enough for construction machinery to enter/exit.
5. Bring the side slopes surrounding the BA to proposed grade.
6. Seed/sod the side slopes as per specifications. (Contractor is responsible to maintain and
protect seed/sod to promote successful establishment during Conversion Procedure. If damage or
death to seed/sod occurs, Contractor must replace affected area immediately.)
7. Once seed/sod has been installed, Contractor shall excavate the bottom of the BA to a depth
equal to the greater of the following:
a. 1 foot below any evidence of sedimentation upon in situ soils; or,
b. 4 feet below the proposed bottom of BA elevation.
8. Excavated material must be disposed of in an approved off-site location.
9. Care must be taken to prevent any sedimentation/re-sedimentation during this process, as
contamination of the in situ soils or the designed soil media will compromise the functionality of the
BA. If any sedimentation occurs during this process, Contractor shall remove sediment immediately.
10. Contact Stocks Engineering 0 252-459-8196 to inspect excavated BA before continuing
construction.
11. Upon approval of Stocks Engineering, continue constructing BA per details. Establish appropriate
permanent vegetation in BA as soon as possible.
12. Upon completion of BA construction, remove sediment from silt fence and dispose of at an
approved off-site location.
13. Contact Stocks Engineering ® 252-459-8196 to inspect completed BA before removing silt fence
and placing the BA in service.
24" FILL SOIL MEDIA
85-88% WASHED SAND
8-12% FINES (SILT & CLAY)
ORGANIC MATTER
6" #57 STONE
O rCRr Vf[HICU rvu
BIORETENTION AREA PROFILE SOCK DRAIN
NOT TO SCALE
Centipede Sod Notes:
1. Centipede Sod shall have been grown in sandy soils with an infiltration rate of 2 -inches per hour
or greater.
2. Do not deliver more sod than can be installed in less than 24 hours.
3. Use a knife or sharp edged shovel to cut the sod to desired lengths. Do not tear sod.
4. Water sod immediatley upon installation to a depth of 1 inch. Water daily for a period of 2 weeks
and then periodically until roots have been established.
4" WASHED SAND
N
32 LF 42"
RCP @ 15.63%
W/WI N GWALLS,
INV. OUT
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THEREFORE, EVERYONE WHO HEARS THESE WORDS OF MINE AND PUTS THEM INTO PRACTICE IS LIKE A WISE MAN WHO BUILT HIS HOUSE ON THE ROCK. MATTHEW 7:24
'I E___
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� ..' FNG I N EES'•; ��.`�
EL 5��,``•
BIO -RETENTION
DETAIL
REVISIONS
FILE NO. 2016-043
HORZ. SCALE: 1"=30'
VERT. SCALE: N/A
CE -05

- - ---
TOW 287.00 236.12' i���'� - - � - _ _ _ -
292.0o Rn\N 2B6.00 11 , /,` -- /� % ,-- � _ � - =o _ - - -- - - _ Notification of Land Resources Sediment and Erosion Control Self Inspection Program:
i iii/�� 2 CONSTRUCT A 76' LONG x 39' WIDE x 2.5' DEEP TOW _ �, /' / / �/ / /-/ 7 - - / - -_ -_ - - - The Sedimentation Pollution Control Act was amended in 2006 to require persons responsible for land disturbing activities
/ ��� �� //// / SKIMMER SEDIMENT BASIN W/A 1.5" SKIMMER, 2gp,00 TOW 291 00 BOW ?B3 00 ��� / / -/- � / / / I // / - - /� - - - - - - - - _ - inspect a project after each phase of the project to make sure that the approved erosion and sedimentation control plan is
r 'I �I I I III l / 3 BAFFLES, ANDA 10 WIDE x 0.5 DEEP CLASS B TOW SOW 283. / � - / / / _ _ - - -- - -
D TOW 286.00 BOW 283 00 �- X %\"' ' -, ` \ %- / / _ - being followed. Rules detailing the documentationof these inspections took effect October 1, 2010. The self inspection
\ \1 I IIII I I I I / / / RIF RAP WEIR PER DETAIL. BASIN SHALL DEWATER 2s�F nn 5.01' y -x, u % X X,, ,,y> /'Xr/ \/,/ /X X /� "\ / z / / / / I / / - - - - z j program P Y 9 program
\ 11 I I / IN 3 DAYS. CONTRACTOR TO RAISE BASIN A� / BOW _ -,�� n ,x/; r ; ; ri Xy% "^'nx nw>`'x'� ^YvC,�; / / / / / / / / / / - / - - - - ro ram is se erate from the week) self monitorin ro ram of the NPDES Stormwater Permit for Construction Activities.
\ \\ \\ ` I I IIII / / / / �/ v\v , ny,/�� X,v Xu / - / _ - _ ____ \ \ \ \ The focus of the self inspection report is the installation and maintenance of erosion and sedimentation control measures
\ \ \ \\ \ I I I GRADES ARE RAISED. �` '\ � >V> �'ki / / / / / _ _ - -
\ 1 �_ ; x \ x ^X ^,n, x x ^Yx %y x - y �' ri xX/xn�X;x� �`:' y'k,/>y Y\ / / / / / / / / / / / / / / ,- / // j - \ \ \ according tot he approved plan. The inspections must be conducted after each phase of the project, continued until
\ \ VA \ \VII IIII 1 1 _ x �k v , x u . , , ,(% i y �/ x� / -
-� v� ii/i , /xr! y `/v'/� K/ /,x. " yxu ^x . V\1 -_2 _ : -;- �y ' ,'C /� iy } c 1 / I / / / �\
\ \ v AA \ I / - 'fix-/ X , ;<,,;�X X ,me/x�' �/ /_ ,//Y}/�. v ✓> x�x• vim/ 'j,> / '� `' �'/X' ' 'V'' ' / / (/ ( / / f f / / / / j / s � vv permanent ground cover is established in accordance with NCGS 113A-54.1 and 15A NCAC 48.0131. The Self Inspection
\ \ \ ,\\\ \\ \\\\ I I I / / ' / ,X/ ;� / r x x ,x, ✓`� �/`., y \nXx, X X' in., - / / / \�_o
/ \ _ x, , y, � ( / / /
TS
I I � __ �? ! j�^,xx �; /;; x y X'xr ', �'� /` x y1/ >� ,c /� / / / / -� Report Form is available as an Excel spreadsheet from htt�/�www.dlr.enr.state.nc.us�pages/sedimentation_new.html
\ 4x4 RIP R,4P\ \ x , �n %! '� =\ / v ✓Y /^y , y - y x r/"rXx „l n '>; / 2 Op kC \ ,' y/� �. / / / ) l l / / / / / / / / /
\ \ \\\ \ \ 1 I I ( �, ;y ;;/ ^x'X x '`� ; Zy ;; ; ;;; ^/ nv y1� - �? /` 280 0 / / / r', l \ \ \ >��/ �'%; / / / / / / / // / \ have any questions or cannot access the form, please contact NCDENR at 919.791.4200. See the Vegetative Practices
�\ \ OUT�.ET ►SAD _ T,.,.,.., ,\,.,./ XX// x_n, , A x, r ,.Y X
\ _�- � �\T., ,��i i�i�i i \\/iii i^i." r.// i n/n , yxX ','\r' x x',xrxx xr,x: Xu v / / �L �"v `X X, / K'�
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CONSTRUCTION SPECIFICATIONS
1. LAY ONE BLOCK ON EACH SIDE OF THE STRUCTURE ON ITS
SIDE ON THE BOTTOM ROW TO ALLOW POOL DRAINAGE. THE
FOUNDATION SHOULD BE EXCAVATED AT LEAST 2 INCHES
BELOW THE CREST OF THE STORM DRAIN. PLACE THE
BOTTOM ROW OF THE BLOCK AGAINST THE EDGE OF THE
STORM DRAIN FOR LATERAL SUPPORT AND TO AVOID
WASHOUTS WHEN OVERFLOW OCCURS. IF NEEDED, GIVE
LATERAL SUPPORT TO SUBSEQUENT ROWS BY PLACING 2x4
WOOD STUDS THROUGH BLOCK OPENINGS. CAREFULLY FIT
HARDWARE CLOTH OR COMPARABLE
2. WIRE MESH WITH 1/2 -INCH OPENING OVER ALL BLOCK
OPENING TO HOLD GRAVEL IN PLACE.
3. USE WASHED STONE PLACED 2 INCHES BELOW THE TOP OF
THE BLOCK ON A 2:1 SLOPE OR FLATTER AND SMOOTH IT TO
AN EVEN GRADE.
4. INSTALL 1/4 IN. WIRE MESH HARDWARE CLOTH, AND METAL
POSTS THAT ARE 5 FT. TALL. PLACE THE WIRE MESH A
MINIMUM OF 3 FT. HIGH, AND THE STONE A MINIMUM OF 1
FT. HIGH.
5. BEFORE COMMENCING CLEARING & GRUBBING OPERATIONS,
THE CONTRACTOR SHALL FIELD LOCATE ALL EX. INLETS WITHIN
THE OPERATIONS AREA AND INSTALL INLET PROTECTION.
(REFERENCE: EROSION AND SEDIMENT CONTROL PLANNING AND
DESIGN MANUAL, 6.52)
8' MAX. WITH WIRE
(6' MAX. WITHOUT WIRE)
WIRE
h1fJAr1JV[o
00
00
° 0 00 0
o � o A o&CC
TEMPORARY SEDIMENT
POOL
V MIN.
2' MAX
SEDIMENT
W.-tre.1-144,
BLOCK AND GRAVEL INLET PROTECTION
SCALE: N.T.S.
-TOP AND BOTTOM STRAND EXTENSION OF FABRIC AND
FILTER FABRIC SHALL BE 10 GAUGE MIN. WIRE INTO TRENCH
NOTES
1. CONSTRUCT THE SEDIMENT BARRIER OF STANDARD STRENGTH OR
EXTRA STRENGTH SYNTHETIC FILTER FABRICS.
2. ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT
EXCEED 18" ABOVE THE GROUND SURFACE.
3. INSTALL THE FILTER FABRIC FROM A CONTINUOUS ROLL CUT TO THE
LENGTH OF THE BARRIER TO AVOID JOINTS. WHEN JOINTS ARE
NECESSARY, SECURELY FASTEN THE FILTER CLOTH ONLY AT A
SUPPORT POST WITH OVERLAP TO THE NEXT POST.
4. SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE MESH
FASTENED SECURELY TO THE UPSLOPE SIDE OF THE POSTS USING
HEAVY DUTY WIRE STAPLES AT LEAST 1" LONG, OR TIE WIRES.
EXTEND THE WIRE MESH SUPPORT TO THE BOTTOM OF THE TRENCH.
5. WHEN A WIRE MESH SUPPORT FENCE IS USED, SPACE POSTS A
MAXIMUM OF 8' APART. SUPPORT POSTS SHOULD BE DRIVEN
SECURELY IN TO THE GROUND TO A MINIMUM OF 24".
6. EXTRA STRENGTH FILTER FABRIC WITH 6' POST SPACING DOES NOT
REQUIRE WIRE MESH SUPPORT FENCE. STAPLE OR WIRE THE FILTER
FABRIC DIRECTLY TO THE POSTS.
7. EXCAVATE A TRENCH APPROXIMATELY 4" WIDE AND 8" DEEP ALONG
THE PROPOSED LINE OF POSTS AND UPSLOPE FROM THE BARRIER.
8. BACKFILL THE TRENCH WITH COMPACTED SOIL OR GRAVEL PLACED
OVER THE FILTER FABRIC.
9. DO NOT ATTACH THE FILTER FABRIC TO EXISTING TREES.
10. LOCATION OF TEMPORARY SEDIMENT FENCE SHOWN ON THE PLANS
IS NOT EXACT. CONTRACTOR SHALL FIELD LOCATE TEMP. SEDIMENT FENCE
AS CLOSE TO THE DOWNSLOPE EDGE OF THE LIMITS OF CLEARING & GRUBBING
AS SPACE ALLOWS.
TEMPORARY SEDIMENT FENCE (SILT FENCE)
SCALE: N.T.S.
CRETE BLOCK
0-
2:1 SLOPE, WASHED STONE FILTER
WIRE SCREEN
IMHN
ZAGZ"009
GENERAL NOTES:
1. CLEAR THE ENTRANCE AND EXIT AREA OF ALL VEGETATION, ROOTS, AND
OTHER OBJECTIONABLE MATERIAL.
2. PLACE THE GRAVEL TO THE SPECIFIC GRADE AND DIMENSIONS SHOWN
ON THE PLANS, AND SMOOTH IT.
3. PROVIDE DRAINAGE TO CARRY WATER TO SEDIMENT TRAP OR OTHER
SUITABLE OUTLET.
4. MAINTAIN THE GRAVEL PAD IN A CONDITION TO PREVENT MUD OR
SEDIMENT FROM LEAVING THE CONSTRUCTION SITE. THIS MAY REQUIRE
PERIODIC TOPDRESSING W/2 INCH STONE.
6" MIN.-'
CONSTRUCTION ENTRANCE
M-16-2006 FRI 09:35 M DEW RRO
6.30
SCALE: N.T.S.
FAX N0.
Apply a good coverage of straw mulch before installing netting.
10- Anchor netting or matting In a
6 -inch trench at upper end Of
Flgure 6,30d dwnel. Compact Soil tun15► and
Instaltatlon stVm every 1 tt, just below anchor
of ternporary s1oR.
donnsl tlner. or
6.30.3
FM
W W�.WWW�..' W WW,W W.WWWWWWWW.
- l / - W .r •r INSERTgNIMGE
NOSE S' MTO BAG
JW otwmBB BW W W
-3 I I1 i.Y�
-III-III-III .. . . . . . .
I I I-1 11-I I MI I=III=1 I I=I I i- + W W.` W W W W. W� W. W W
III -III -III I I 1=,11 I M I 1
III-111-� I � -1 I I -III -III -I I--- W W
Installation and Use:
1. Place Dewatering Bag on the ground or on a trailer over a relatively level,
stabilized area.
2. Insert discharge pipe a minimum of 5ft. inside dewatering bag and secure
with a rope wrapped 6 times around the snout over a 6 inch width of the
bag.
3. Replace Dewatering Bag when half full of sediment or when the sediment
has reduced the flow rate of the pump discharge to an impractical amount.
Maintenance and Disposal:
1. Remove and dispose of accumulated sediment away from waterways or
environmentally sensitive areas. Slit open Sediment Bag and remove
accumulated sediment. Dispose of bag at an appropriate recycling or solid
waste facility. OR; as directed by engineer or inspector.
DEWATERING BAG
SCALE: N.T.S.
Roll out netting in the
&edon of water flow.
Do not stretch.
-
•
+
Join ends of strips by 0v6rft%Pp0iJng1
both layers. Anchor upper end of
strip in 6 -inch trench.
�y
-.
TEMPORARY LINER
SCALE: N.T.S.
I?
COMPACTED SOIL
4
6' TYP.
I 1
CONSTRUCTION SPECIFICATIONS.
1 REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS, AND OTHER OBJECTIONABLE
MA TERIAL.
2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION MEETS ALL DESIGN REQUIREMENTS
J. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE DESIGN ELEVATION
PLUS THE SPECIFIED SETTLEMENT.
4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE REGRADING AND CLEANOUT.
5. DMI TIED.
MAINTENANCE.•
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL. IMMEDIATELY REMOVE
SEDIMENT FROM THE FLOW AREA AND REPAIR THE DIVERSION RIDGE. CAREFULLY CHECK OUTLETS
AND MAKE TIMELY REPAIRS AS NEEDED. WHEN THE AREA PROTECTED IS PERMANENTLY STABILIZED,
REMOVE THE RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL GROUND LEVEL AND
APPROPRIA TEL Y STABILIZE IT.
TEMPORARY DIVERSION WITH EXCELSIOR MATTING
NOT TO SCALE
FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY BEGOTTEN SON, THAT WHOSOEVER BELIEVETH IN HIM SHALL NOT PERISH, BUT HAVE EVERLASTING LIFE. JOHN 3:16
12" OF #57 SILT FENCE
WASHED STONE _\
1'-8" MIN. SEE PLAN
CLASS B
S EROSION CONTROL
�Oo� STONE
2:1
2' MIN. FILTER SILT FENCE 1` 1 SILT FENCE
GROUND LINE FABRIC
CROSS SECTION TOP VIEW
FRONT VIEW
CONS TRUC TION SPECS:
I. CLEAR & GRUB THE AREA AROUND THE SILT FENCE
OUTLET AND PROPERLY DISPOSE OF DEBRIS.
2. PLACE GRAVEL TO THE SPECIFIC GRADE AS SHOWN
PER THE DETAIL.
J. PROPERLY OVERLAP STONE BEYOND EDGES OF SILT
FENCE OPENING.
MAIN TENANCE:
INSPECT OUTLETS WEEKLY AND AFTER EACH RAIN EVENT
IMMEDIA TEL Y REMO VE SEDIMEN T FROM THE FL 0W AREA
AND REPAIR AS NEEDED. CAREFULLY CHECK OUTLETS
FOR EROSION AND REPAIR IMMEDIA TEL Y. ENSURE THERE
IS NO SCOURING APPARENT DOWNSTREAM OF OUTLET
IMMEDIA TEL Y STABILIZE ANY AREAS THAT NEED REPAIR.
SILT FENCE OUTLET
SCALE: N.T.S.
Erosion Control Maintenance Plan
All erosion and sedimentation control measures shall
be inspected weekly and after each runoff -producing
rainfall event. Structures that shall be inspected include
but are not limited to:
Silt Fence and Fabric Inlet Protection
Any fabric which collapses, tears, decomposes, or becomes ineffective
shall be replaced immediately. Sediment deposits shall be removed
when sediment behind the fence reaches 6".
Seeding, Fertilizing, and Mulching
Seeded areas shall be inspected for failure and necessary repairs
and re -seeding shall be made within the same season.
Block and Gravel Inlet Protection
Inspect the barrier after each rain, remove sediment
as necessary to provide adequate storage volume
for subsequent rains. Upon stabilization of drainage
area, remove all materials and any unstable
soil, either salvage or dispose of properly. Bring disturbed
disturbed area to proper grade, then smooth and compact
it. Stabilize all bare areas around the inlet.
Temporary Diversion Ditches
Sediment shall be removed from the flow area immediately
after each rainfall.
Temporary Gravel Construction Entrance/Exit
Maintain the gravel pad in a condition to prevent mud
or sediment from leaving the construction site. This may
require periodic topdressing with 2 -inch stone. After a
rainfall, immediately remove all objectionable materials
spilled, washed, or tracked onto roadways.
Sediment Basins and Pits
Sediment shall be removed from the structure and the
structure shall be restored to its original dimensions
when 1.0' of sediment has accumulated in the structure.
The sediment shall be disposed of off-site and the
contaminated part of the gravel shall be replaced.
The structure shall be inspected for damage and
repaired accordingly.
EROSION CONTROL MAINTENANCE PLAN
SCALE: N.T.S.
■
rn 0)
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0)
-
0)00M
LL Lo 10
0
NDN
V4
vL
Z �W
ZOXM
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W
H
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j N
Q
U
Woz
w�
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a�5
L Wm
r
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(A r(LZ
A'rOZ
ESS 4
SEAL
19843
%*�Q)YAEL 5N
11/5/15
EROSION
NOTES/DETAILS
REVISIONS
6/29/16 OWNER COMMENTS
FILE NO. 2015-043
HORZ. SCALE: 1"=60'
VERT. SCALE: NONE
CE 07

I124NIs] II_\aI��.ya11]IIIaIIIRAV Irel IWKS] II1:Z61101:0: TAIINI
PROJECT DESCRIPTION
The purpose of this project is for construction of streets and utilities for Flowers Pod 9 - Phase 4
The project Is owned by Rebecca Flowers. The site is currently undeveloped.
Approximately 9.20 acres will be disturbed during construction. The maximum fill will be 15-25 feet.
The .pro1'ect is scheduled to begin construction in December 2016 with project completion and final
stabilization by October 2017. The erosion and sediment control program for this project will include
the installation of a suitable construction entrance, silt fence, outlet protection, inlet protection,
and skimmer basins with temporary seeding of the site.
ADJACENT PROPERTY
The Riverdell Company owns most land adjacent to the proposed construction area.
SOILS
The soil at this site is a sandy clay.
EROSION AND SEDIMENT CONTROL MEASURES
All vegetative and structural erosion and sediment control practices shall be constructed and
maintained by the contractor according to these plans and specifications and the minimum
standards of the Dept. of Environmental Management, Land Quality Section and Johnston
County. The contractor shall also follow any additional requirements as outlined by the Project
Engineer.
Structural Practices
1. Vehicle wheels shall be clean when leaving the site to prevent the tracking of mud on paved
roads.
2. Construction Road Stabilization: Construction traffic shall be limited to stabilized areas. At a
minimum, a temporary gravel construction entrance shall be provided as shown on this
drawing.
3. Silt Fence: Silt fences shall be provided where shown and as needed on the site plan. These
barriers shall be used to contain sediment.
4. Rip Rap/Gravel Filter Sediment Basins: Construct basin to the shape and dimensions shown in
the details. The basin is to be placed below the existing ditch flow line by 2' with the berm built
above as dimensioned.
Management Strategies
1. Perimeter measures are to be installed prior to grubbing or grading.
2. Tail Ditches shall be stabilized immediately following their construction. As an alternate, rock
check dams may be provided at their outlets and/or the terminal downstream end of
disturbance untir ground cover is implemented.
3. Stockpile and/or waste areas must be maintained within the limits of the areas _protected b the
proposed measures and otherwise temporarily seeded if to be left stockpiled over 15 calender days.
4. Construction shall be planned so that grading operations can begin and end as quickly as
possible.
5. Silt Fences shall also be installed prior to or as a first step in construction.
6. The Contractor shall be responsible for the installation and maintenance of all erosion and
sediment control practices.
Vegetative Ground Cover
Immediately following grading, all areas shall receive either permanent or temporary seeding, as
applicable, as follows:
Site Area Description:
Stabilization Time Frame:
Stabilization Time Frame Exceptions:
Perimeter dikes, swales,
7 Days
None
ditches & slopes.
High Quality Water (HQW)
7 Days
None
Zones.
Slope steeper than 3:1
7 Days
If slopes are 10' or less in length & are
not steeper than 2:1, 14 days are allowed.
Slopes 3:1 or flatter.
14 Days
7 Days for slopes greater than 50 feet
in length.
All other areas with slopes
14 Days
None (Except for perimeters and HQW
flatter than 4:1
Zones)
TEMPORARY SEEDING SPECIFICATIONS
SEEDING MIXTURE
SPECIES RATE (LB/ACRE)
WINTER/EARLY SPRING - RYE (GRAIN) 120
KOBE LESPEDEZA 50
SUMMER - GERMAN MILLET 40
PERMANENT SEEDING SPECIFICATIONS
SEEDING MIXTURE
FEB -MARCH
KY 31 TALL FESCUE
1,000 LBS/ACRE
PLUS UNHULLED
PREMIUM BERMUDA
® 125 LBS/ACRE
APRIL -OCT
KY 31 TALL FESCUE
@ 1,000 LBS/ACRE
PLUS PREMIUM BERMUDA
® 125 LBS/ACRE
INFL(
STRU
PVC END CAP
PVC END CAP-/
PVC TEE
S,UAVA FAff SED/AFArrNJ4S/N
NOT TO SCALE
ARM ASSEMBLY
"C" ENCLOSURE
WATER ENTRY UNIT
P,FASPECT/MFXE!f
NOT TO SCALE
PVC ELBOW
PVC PIPE
1/2" HOLES IN
UNDERSIDE
END VIEW
NOT TO SCALE
PVC VENT
PIPE SCHEDULE 40 PVC PIPE
SCHEDULE 40 PVC PIPE
ORIFICE PLATE
FLEXIBLE HOSES PVC TEE
0
FRONT VIEW
NOT TO SCALE
NOT TO SCALE
EMERGENCY
SPILLWAY
INFLOW BAFFLES 1' FREEBOARD
STRUCTURE EMBANKMENT
NOV-JAN
KY 31 TALL FESCUE DEWAT7FABRIC
ZONE 6" MIN. INVERT ELEVATION OF EMERGENCY
® 1,000 LBS/ACRE EMERGENCY SPILLWAY SPILLWAY
PLUS RYE GRAIN FILTER
@ 40 LBS/ACRE
PLUS UNHULLED
PREMIUM BERMUDA SEDIMENT STORAGE
@ 125 LBS/ACRE ZONE CROSS-SECTION VIEW
NOT TO SCALE
NURSE PLANTS
BETWEEN APR. 15 AND AUG. 15, ADD 10 LB/ACRE GERMAN MILLET OR 15 LB/ACRE SUDANGRASS. PRIOR TO MAY 1
OR AFTER AUG. 15 ADD 25 LB/ACRE RYE (GRAIN).
SOIL AMENDMENTS
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TEST. IF SOIL TEST IS NOT AVAILIBLE APPLY 2 TONS/ACRE AGRICULTURAL
GRADE LIMESTONE AND 1,000 LBS ACRE OF 10-10-10 FERTILIZER OR APPLY 3,000-5,000 LB ACRE SEDANGRASS.
PRIOR TO MAY 1 OR AFTER AUG 5, ADD 25 LB/ACRE RYE (GRAIN). /
MULCH
APPLY 4,000 LB/ACRE GRAIN STRAW OR EQUIVALENT COVER OF ANOTHER SUITABLE MULCH. ANCHOR STRAW BY
TACKING WITH ASPHALT, NETTING, OR ROVING OR BY CRIMPING WITH A MULCH ANCHORING TOOL. A DISK WITH
BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL.
MAINTENANCE
IF GROWTH IS LESS THAN FULLY ADEQUATE, REFERTILIZE THE SECOND YEAR. ACCORDING TO SOIL TESTS OR
TOPDRESS WITH 500 LB/ACRE 10-10-10 FERTILIZER. MOW AS NEEDED WHEN SERICEA IS OMITTED FROM THE
MIXTURE. RESEED, FERTILIZE, AND MULCH DAMAGED AREAS IMMEDIATELY.
Maintenance
1. Reseed and mulch bare spots larger than 9 square feet limited to 5% maximum f i r
o ax mum o site area.)
P q )
2. Maintain all seeded areas until uniform stand is acce table.
3. If growth is not established by final project inspection, continue specified attention until the
stand is acceptable.
4. Correct and repair all undue settling and erosion within 1 year after final inspection.
5. Remove from the site, all erosion control structures after complete stabilization at end of
construction period.
6. Remove silt from sediment pits and from behind check dams when silt is within half depth of
the pit or spillway. Dispose of in an area where silt cannot re-enter pit / trap.
Calculations
The practice utilized for the proposed site did require formal calculations. Calculations have been
provided.
OWNER
REBECCA FLOWERS
DWF DEVELOPMENT
CLAYTON, N.C.
CONSTRUCTION SEQUENCE:
1. Obtain erosion control Ian approval prior to beginning land disturbance. Retain a co of the roved
P PP P 9 9 PY PP
erosion control plan and permit on site. Call Johnston County at 919.209.8333 to notify the Inspector of a
start date prior to land disturbance.
2. Clear the area needed to construct the proposed construction entrance.
3. Construct the construction entrance as shown on the plans. Maintain the construction entrance daily to
ensure that mud and silt will not be tracked onto the paved surface. If mud is tracked onto the road
surface, it is to be removed immediately.
4. Construction entrance location may not vary without prior approval from Engineer and Johnston County.
5. Clear the area needed to access and construct sediment basins.
6. Construct sediment basins. Stabilize immediately.
7. Clear the area needed to construct the perimeter erosion control measures including temporary diversion
ditches, silt fence.
8. Construct the temporary diversion and silt fence. Tie temporary diversions into sediment basins where
applicable diversions & basins shall be seeded, mulched, & anchored upon installation.
9. Begin clearing, grubbing, and topsoil stripping.
10. Rough grade all roadways and lots. Adjust basins and temporary diversions as grades rise.
11. onstruct sanitary sewer system throughout project.
12. Construct the storm sewer system throughout the project. Install inlet protection devices.
13. Construct curb and gutter and CABC on roadway.
14. Seed, straw and tack areas behind the curb and gutter that are graded to their final disposition.
15. Complete the construction of storm sewer pipe.
16. Construct permanent outlet protection devices at pipe outlet.
17. Upon completion of the project, contact Johnston County to inspect prior to removing EC measures.
18. Seed, straw and tack any remaining exposed areas.
PIPE OUTLET TO FLAT AREA
NO WELL-DEFINED CHANNEL
PLAN VIEW
••�
I� La
FILTER BLANKET
OR (MIRAFI 140N) SECTION A -A
PIPE OUTLET TO FLAT AREA
NO WELL-DEFINED CHANNEL
CONS IRUC110N SPECIFICATIONS,
1. Clearrub and strip the area under the embankment of all vegetation and root mat. Remove all surface soil containing high amounts of organic matter and
9� P 9 9 9
stockpile or dispose of it properly. Houl all objectionable material to the designated disposal area. Place temporary sediment control measures below basin os needed.
2. Ensure that fill moteridl for the embankment is free of roots woody vegetation, organic matter, and other objectionable materia% Place the fill in lifts not to exceed
9 1
9 inches, and machine compact it. Over All the embankment 6 inches to allow for settlement.
J. ShGpe the basin to the specified dimensions. Prevent the skimming device from settling into the mud by excavating a shallow pit under the skimmer or providing o
low support under the skimmer of stone or timber.
4. Place the barrel (typically 4 -inch Schedule 40 PVC pipe) on a firm, smooth foundation of impervious soil. Do not use pervious material such os sand, gravel, or
crushed stone as backfill around the pipe. Place the fill material around the pipe spillway in 4 -inch loyers and compact it under and around the pipe to at least the
same density as the adjacent embankment. Care must be taken not to raise the pipe from the flrm contact with its foundation when compacting under the pipe
haunches.
Place a minimum depth of 2 feet of compacted backflll over the pipe spillway before crossing it with construction equipment. In no case should the pipe conduit be
installed by cutting a trench through the dam after the embankment is complete.
5. Assemble the skimmer following the manufacturers instructions, or as designed.
6. Lay the assembled skimmer on the bottom of the basin with the flexible joint at the inlet of the barrel pipe. Attach the flexible joint to the barrel pipe and position
the skimmer over the excavated pit or support. Be sure to attach a rope to the skimmer and anchor it to the side of the basin. This will be used to pull the
skimmer to the side for maintenance.
7. Earthen spillways - Install the spillway in undisturbed soil to the greatest extent possible. The achievement of planned elevations, grade, design width, and entrance
and exit channel slopes are critical to the successful operation of the spillway. The spillway should be lined with laminated plastic or impermeable geotextile fabric. The
fabric must be wide and longenough to cover the bottom and sides and extend onto the to of the dam for anchorin in a trench. The edges may be secured with
9 P 9 9 y
8 -inch staples or ins. The fabric must be long enough to extend down the sloe and exit onto stable round. The width of the fabric must be one piece, not joined
P P 9 9 P 9
or spliced- otherwise water can get under the fabric. If the length of the fabric is insufficient for the entire length of the spillway, multiple sections, spanning the
complete width, may be used. The upper section(s) should overlap the lower section(s) so the water cannot flow under the fabric. Secure the upper edge and sides of
the fabric in a trench with staples or pins.
8. Inlets - Discharge water into the basin in a manner to prevent erosion. Use temporary slope drains or diversions with outlet protection to divert sediment -laden
water to the upper end of the pool area to improve basin trap efficiency.
9. Erosion control - Construct the structure so that the disturbed area is minimized. Divert surface water away from bare areas. Complete the embankment before the
area is cleared. Stabilize the emergency spillway embankment and all other disturbed areas above the crest of the principal spillway immediately after construction.
10. Install porous baffles as specified.
11. After all the sediment -producing areas have been permanently stabilized, remove the structure and oil the unstable sediment. Smooth the area to blend with the
adjoining areas and stabilize properly.
MAINTENANCE.
Inspect skimmer sediment basins at least weekly and after each significant (one-half inch or greater) rainfall event and repair immediately. Remove sediment and
restore the basin to its original dimensions when sediment accumulates to one-holf the height of the first baffle. Pull the skimmer to one side so that the
sediment underneath it can be excavated. Excavate the sediment from the entire basin, not just around the skimmer or the first cell. Make sure vegetation
growing in the bottom of the basin does not hold down the skimmer.
Repair the baffles if they are damaged. Re -anchor the baffles if water is flowing underneath or Ground them.
if the skimmer is clogged with trash and there is water in the basin, usually jerking on the rope will make the skimmer bob up and down and dislodge the debris
and restore flow. If this does not work, pull the skimmer over to the side of the basin and remove the debris. Also check the orifice inside the skimmer to see
if it is clogged- if so, remove the debris.
if the skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction cleared with a plumbers snake or by flushing with water. Be sure
and replace the orifice before repositioning the skimmer.
Check the fabric lined spillway for damage and make any required repairs with fabric that spans the full width of the spillway. Check the embankment, spillways,
and outlet for erosion damage, and inspect the embankment for piping and settlement. Make oll necessary repairs immediately. Remove all trash and other
debris from the skimmer and pool areas.
Freezing weather can result in ice forming in the basin. Some special precautions should be taken in the winter to prevent the skimmer from plugging with ice.
I�La
FILTER BLANKET
OR (MIRAFI 140N) SECTION A -A
PIPE OUTLET TO
WELL-DEFINED CHANNEL
GENERAL NOTES:
1. La = THE LENGTH OF THE RIP RAP APRON.
2. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS THAN 6".
3. IN A WELL-DEFINED CHANNEL EXTEND THE APRON UP THE CHANNEL BANKS
TO AN ELEVATION OF 6" ABOVE THE MAXIMUM TAILWATER DEPTH OR TO THE
TOP OF THE BANK, WHICHEVER IS LESS.
4. A FILTER BLANKET OR FILTER FABRIC SHOULD BE INSTALLED BETWEEN THE
RIP RAP AND SOIL FOUNDATION.
5. FLARED END SECTION IS OPTIONAL. SEE PLANS FOR REQUIREMENT.
6. SEE PLAN AND PROFILES FOR ACTUAL DIMENSIONS.
PIPE OUTLET PROTECTION
SCALE: N.T.S.
WOOD OR
METAL POST
_i
WOOD OR
METAL POST
SILT FENCE
SUPPORT ROPE TO SUPPORT POST, STAKE TO
SEE EROSION CONTROL PLAN
Ili FOR ACTUAL PIT DIMENSIONS
STAPLED OR 7RENCHED INTO
BOTTOM OR SIDE
SED BASIN BAFFLES
SCALE: N.T.S.
I^I
CLEAN-OUT MIN.
STAKE 1 5
1 0 ?� Q
�1 s`0-
Lo
--------------SET CLEAN-OUT---` ��1 5'
STAKE AT 1/2 -1 I 1-1 i III-III--III-1
.�� P1 VOLUME 1: 1 1-I I„ I FlL TER FABRIC
"=1 I
-r' CROSS SECTION EMERGENCY
BY-PASS
-- ----'
-------------------- a_
-°------------------------- --- 6„ BELOW
-SILT FENCE OVERFILL 6" SETTLED
MIRAF1
DESIGN FOR SETTLEMENT TOP OF DAM
s1115 SETTLED TOP
SEE EROSION CONTROL PLAN
FOR ACTUAL PIT DIMENSIONS
I� 4' MIN.
TEMPORARY PIPE - -
I II
I- III
,:2
INLET PROTECTION�--:1 SIDE _I• ��//\ / ,; -1j
/.SLOPE MI=I I I
I-
/
SCALE. N.T.S. / / / / / /
-III- \< II
�" 1: 1 SIDE NATURAL
FlL TER FABRIC
SLOPE MAX / /j' -� GROUND
-II
STAKE (TYP)
• • 14'
10 MIL PLASTIC
LINING
I-14•�-I
STAPLE (2 PER BALE) SILT FENCE
10 MIL PLASTIC LINING STRAW BALE
METAL STAKE (2 PER BALE)
PLYWOOD PAINTED WHITE
BLACK LETTERS 6" TALL
CONCRETE
WASHOUT 6WOOD POST
T GROUND LEVEL
CONSTRUCTION SPECIFICATIONS
1. CONCRETE WASHOUT SIGN SHALL BE INSTALLED NO FURTHER THAN 25' FROM THE
FACILITY AND SHALL BE VISIBLE TO ALL CONSTRUCTION TRAFFIC.
2. POLYETHYLENE SHEETING SHALL BE 10 MILS FREE OF HOLES, TEARS, OR LEAKS.
MAINTENANCE.'
FACILITY SHALL NOT BE FILLED MORE THAN 12" FROM THE TOP BEFORE DISPOSING OF
CONCRETE. CONCRETE SHALL BE DISPOSED OF IN THE SAME MANNER AS OTHER
NON-HAZORDOUS MATERIALS FROM THE SITE OR MAY BE BROKEN UP AND USED AS
FILL IN NON-STRUCTURAL AREAS.
CPAWA91 r,FAWCArW, s/Niff
NOT TO SCALE
Maintenance Notes:
1. Do not let any area remained exposed for more than 7 or 14 calendar days according to chart without
applying temporary seeding.
2. Maintain all erosion control measures daily and reseed disturbed areas as needed.
3. Inspect all erosion control measures weekly and after each rainfall event. Repair as needed.
4. At the end of each day's storm drainage operation, construct a temporary pipe inlet protection device until
the next day's operation continues.
FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY BEGOTTEN SON, THAT WHOSOEVER BELIEVETH IN HIM SHALL NOT PERISH, BUT HAVE EVERLASTING LIFE. JOHN 3:16
- STONE SECTION
GENERAL NOTES:
1. Clear, grub, and strip the area under the embankment of all vegetation and root mat. Remove all
surface soil containing high amounts of organic matter and stockpile or dispose of it properly. Haul
all objectionable material to the designated disposal area.
1 9 P
2. Ensure that fill material for the embankment is free of roots, woody vegetation, organic matter, and
other objectionable material. Place the fill in lifts not to exceed 9 inches and machine compact it.
Over fill the embankment 6 inches to allow for settlement.
3. Construct the outlet section in the embankment. Protect the connection between the riprap and the
soil from piping by using filter fabric or a keyway cutoff trench between the riprap structure and
the soil.
Place the filter fabric between the riprap and soil. Extend the fabric across the spillway
foundation and sides to the top of the dam; or
Excavate a keyway trench along the centerline of the spillway foundation extending up the
sides to the height of the dam. The trench should be at least 2 ft. deep and 2 ft. wide
with 1:1 side slopes.
4. Clear the pond area below the elevation of the crest of the spillway to facilitate sediment cleanout.
5. All cut and fill slopes should be 2:1 or flatter.
6. Ensure that the stone (drainage) section of the embankment has a minimum bottom width of 3 ft.
and a maximum side slopes of 1:1 that extend to the bottom of the spillway section.
7. Construct the minimum finished stone spillway bottom width, as shown on the plans, with 2:1 side
slopes extending to the top of the over filled embankment. Keep the thickness of the sides of the
spillway outlet structure at a minimum of 21 inches. The weir must be level and constructed to
grade to assure design capacity.
8. Material used in the stone section should be a well -graded mixture of stone with a d size of 9
inches (class B erosion control stone is recommended) and a maximum stone size of 14 inches.
The stone may be machine placed and the smaller stones worked into the voids of the larger stones
The stone should be hard, angular, and highly weather -resistant.
9. Ensure that the stone spillway outlet section extends downstream past the toe of the embankment
P Y
until stable conditions are reached and outlet velocity is acceptable for the receiving stream. Keep
the edges of the stone outlet section flush with the surrounding ground and shape the center to
confine the outflow stream References: Outlet Protection).
10. Direct emergency bypass to natural, stable areas. Locate bypass outlets so that flow will not damage
the embankment.
11. Stabilize the embankment and all disturbed areas above the sediment pool and downstream from the
trap immediately after construction (References: Surface Stabilization).
12. Show the distance from the top of the spillway to the sediment cleanout level (one-half the design
depth) on the plans and mark it in the field.
SEDIMENT BASIN
SCALE: N.T.S.
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EROSION
NOTES/DETAILS
REVISIONS
6/29/16 OWNER COMMENTS
FILE NO. 2015-043
HORZ. SCALE: 1"=60'
VERT. SCALE: NONE
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THEREFORE. EVERYONE EVERYONE WHO HEARS THESE WORDS OF MINE AND PUTS THEM INTO PRACTICE IS LIKE A WISE MAN WHO BUILT HIS HOUSE ON THE ROCK. MATTHEW 7:24
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19843
�HAEL
9 17 -16 4
DRAINAGE
PLAN
REVISIONS
FILE NO. 2016-043
HORZ. SCALE: 1"=40'
VERT. SCALE: N/A
CE -09