20120458 Ver 1_Stormwater Info_20120618

The Curry Engmeernlg
Group, PLLC
LETTER OF TRANSMITTAL
To
Ms Annette Lucas
Job Name
NCDENR DWQ
Holly Springs NC
512 N Salisbury St
Date
Archdale Budding — 9 Floor
Level Spreader Supplembnt Form REVISED
Raleigh NC 27604
Sent By
Don Curry PE
Phone
919 - 807 -6381
Overnight No x
Yes
We are sending you the following
• EC Plans X Pnnts /Plans
• Contracts ❑ Permit Applications
These are transmitted as checked below
X For Approval ❑ As Discussed
❑ For Review and Comment
Job No
2011 -045
Job Name
Maggie Run West
Holly Springs NC
Plans Full Size REVISED
Date
June 18 2012
Level Spreader Supplembnt Form REVISED
Sent By
Don Curry PE
• Construction Plat ❑ Site Plan Drawings ❑ Computer Disk
• Site Work Calculations ❑
• For Your File ❑ As Requested
• For Your Signature then return to
❑ For Your Use
u
Copies
Date
Description
2
Plans Full Size REVISED
1
Level Spreader Supplembnt Form REVISED
Remarks Annette — As discussed, I have enclosed hard copies of the latest revised plans for your
review Please let me know if you have any questions
Thanks. Don
Copies To file
The Curry Engineering Group PLLC
PO Box 2018
133 Spnng Ave
Fuquay Vanna NC 27526
doncurrykeurryengmeermggroup com
Don Curry PE
919 552 0849 (0)
919 552 2043 (F)
919 880 9857 (C)
www curryengmeermggroup corn

The Curry Englneernlg
Group, PLLC
June 18 2012
Ms Annette Lucas PE
NCDENR NC Division of Water Quality
512 N Salisbury St
Raleigh NC 27604
RE Maggie Run West
Response to Comments June 7 2012
Dear Ms Lucas
The purpose of this letter is to respond to your review comments dated June 7 2012 for the above referenced
project Your comments and corresponding responses are summarized below
I The supplement form indicates that a forebay of 180 square feet has been provided however this device
does not appear on the plan sheets Please provide a properly sized forebay with the appropriate depths
The scour hole may not be used as a forebay
The forebay has been re sized per the latest flow rate It is now listed at 110 sf which is
10 25'x10 25' This forebay is now shown to scale on the revised plans All references to a scour hole
have been removed
2 Please provide a more permanent flow splitting device per Section 5 3 of the NC Division of Water Quality
BMP Manual
As discussed typically the flow sputter would be a box that receives flow from an enclosed pipe
system Since we are receiving and splitting ditch flow in this case I have detailed a weir
combination in the forebay to separate the flows to the blind swale/level spreader and bypass swale
Please see revised details on D 02
3 Please show one foot contour lines indicating the grading for the proposed bypass channel
As discussed the ditch is fairly flat and with 5' contours on the existing topo it is difficult to show the
proposed one foot intervals However we have identified the location on the ditch by showing a
darker line in the ditch line symbology I hope this is helpful
4 Please show proposed boundaries of the drainage easement that extend a minimum of ten feet outside the
limits of the diffuse flow devices
The drainage easement now extends 10 around the VFS/LS
Please let me know if you have any questions or need additional information pertaining to your review
Sincerely
The Curry Engineering Gr p PLLC
Donald L Curry Jr PE
Encl Calculations & Associated Documentation
The Curry Engineering Group PLLC Don L Curry Jr PE
PO Box 2018 919 552 0849 (0)
133 Spring Ave 919 552 2043 (F)
Fuquay Vanna NC 27526 919 880 9857 (C)
doncuriy9curryengineermggroup corn www curryeti neeunggroup com

ATA
110
�F WATE9
0 Dy
NCDENR
36
D
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
12
in Depth is appropriate
401 CERTIFICATION APPLICATION FORM
10
LEVEL SPREADER
VEGETATED FILTER STRIP (LS VFS) SUPPLEMENT
30
This form must be completely filled out printed m►tfaled and submitted
Length of level lip provided
PROJECT INFORMATION
Width of VFS
Project name
Maggie Run West
Elevation at downslope base of level lip
Contact name
Donald L Curry Jr PE
Elevation at the end of the VFS that is farthest from the LS
Phone number
919 552 0849
Date
June 18 2012
Drainage area number
1
II DESIGN INFORMATION
w
The purpose of the LS VFS
Pollutant removal 40 / TSS 30 / TN 35 / TP
Stormwater enters LS VFS from
The drainage area
Type of VFS
Engineered filter strip (graded & sodded slope < 80/)
Explanation of any Other responses above
If Stormwater Enters the LS VFS from the Drainage Area
Drainage area
219 000 ft
Impervious surface area
54 280 fe
Percent impervious
2479 /
Rational C coefficient
060
Peak flow from the 1 in /hr storm
302 cfs
Time of concentration
500 min
Rainfall intensity 10 yr storm
708 in /hr
Peak flow from the 10 yr storm
2136 cfs
Design storm
1 inch /hour storm
Maximum amount of flow directed to the LS VFS
302 cfs
Is a flow bypass system going to be used?
y (Y or N)
Explanation of any Other responses above
Impervious area in ditch 32 500 sf (5 lots) +21 780 sf (roadway)
If Stormwater Enters the LS VFS from a BMP
Type of BMP
Peak discharge from the BMP during the design storm
Peak discharge from the BMP during the 10 year storm
Maximum capacity of a 100 foot long LS VFS
Peak flow directed to the LS VFS
Is a flow bypass system going to be used?
Explanation of any Other" responses above
LS VFS Design
Do not complete this section of the form
cfs
cfs Do not complete this section of the form
10 cfs
cfs Do not complete this section of the form
(Y or N)
Forebay surface area
110
sq ft Forebay is adequately sized
Depth of forebay at stormwater entry point
36
in
Depth of forebay at stormwater exit point
12
in Depth is appropriate
Feet of level lip needed per cfs
10
fvcfs
Computed minimum length of the level lip needed
30
ft
Length of level lip provided
31
ft
Width of VFS
30
ft
Elevation at downslope base of level lip
43050
fmsl
Elevation at the end of the VFS that is farthest from the LS
43000
fmsl
Form SW401 LS VFS 27Ju12011 Rev 9 page 1 of 3

Slope (from level lip to the end of the VFS)
Are any draws present in the VFS9
Is there a collector swale at the end of the VFS2
Bypass System Design (if applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below)
M
B
W
y (flow depth for 10 year storm)
freeboard (during the 10 year storm)
Peak velocity in the channel during the 10 yr storm
Channel lining material
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Explanation of any Other" responses above
167 /
N (Y or N) OK
N (Y or N)
Y (Y or N)
Y (Y or N) Please provide plan details of flow splitter & supporting calcs
300
ft
300
ft
1425
ft
087
ft
100
ft
439
ft/sec
Pick one
N (Y or N)
Y (Y or N)
BYPASS ENTERS POND NOT STREAM
4t
w
1 B i
III REQUIRED ITEMS CHECKLIST - �N, P �, V 1 'e . 't , - 4,1 - �„ �,
EDIT Please indicate the page or plan sheet numbers where the supporting documentation can be found An incomplete submittal package will
result in a request for additional information This will delay final review and approval of the project Initial in the space provided to indicate the
following design requirements have been met If the applicant has designated an agent the agent may initial below If a requirement has not been
met attach justification
Requned Item
1 Plans (1 50 or larger) of the entire site showing
Design at ultimate build -out
Off site drainage (if applicable)
Delineated drainage basins (include Rational C coefficient per basin)
Forebay (if applicable)
High flow bypass system
Maintenance access
Proposed drainage easement and public right of way (ROW) and
Boundanes of drainage easement
2 Plan details (1 30 or larger) for the level spreader showing
Forebay (if applicable)
High flow bypass system
One foot topo lines between the level lip and top of stream bank
Proposed drainage easement and
Design at ultimate build -out
Page or plan sheet number and any notes
6->/ C- -oZ-
C -cZ/
Form SW401 LS VFS 27Ju12011 Rev 9 page 2 of 3

3 Section view of the level spreader (1 20 or larger) showing
Underdrain system (if applicable)
Level lip
Upslope channel and
Downslope filter fabric
4 Plan details of the flow splitting device and supporting calculations (if applicable)
5 A construction sequence that shows how the level spreader will be protected from
sediment until the entire drainage area is stabilized
6 If a non - engineered VFS is being used then provide a photograph of the VFS showing
that no draws are present
7 The supporting calculations
8 A copy of the signed and notarized operation and maintenance (0 &M) agreement
M / I
—0--E7 Z
Form SW401 LS VFS 27Ju12011 Rev 9 page 3 of 3

0
o f
.5737 SPENCE FARM ROAD
(1 ,
Z
0
M
TRACT ACREAGE: . . . . . . . . . . . .
. 16.30 Ac.
NUMBER OF LOTS:. . . . . . . . . .
OLD POWELL RD
LINEAR FOOTAGE OF STREETS:. . . .
.803 LF
��
. 1.10 Ac.
>
.2.44 Ac
ZONE:. . . . . . . . . . . . .
R -30
TAX ID #. . . . . . . . . . . . . . .
.0647.02 -98 -2706
REFER T0: . . . . . . . . . . . . . .
. B.M. 2011 - PG. 112
MINIMUM BUILDING SETBACKS:
o
FRONT:.
CORNER SIDE: . . . . . . . . . . .
SPENCE FARM RD
REAR: . . . . . . . . . . . . . . . .
. 30'
SIDE: . . . . . . . . . . . . . .
10'
Z
.95 FT.
MINIMUM LOT SIZE:. . . . . . .
FL
TOWNSHIP:. . . . . . . . . . . . . . .
.HOLLY SPRINGS
1
SITE MAGGIE RUN LN
WILDLIFE LN
VICINITY
NOT TO SCALE ,
Lkzilh
/:..• ,_ ,
SITE ADDRESS: . . . . . . . . . . . .
.5737 SPENCE FARM ROAD
5920 Honeycutt Road
HOLLY SPRINGS, NC 27540
TRACT ACREAGE: . . . . . . . . . . . .
. 16.30 Ac.
NUMBER OF LOTS:. . . . . . . . . .
. 11
LINEAR FOOTAGE OF STREETS:. . . .
.803 LF
AREA OF PROPOSED STREET R /W:
. 1.10 Ac.
DISTURBED AREA:. . . . . . .
.2.44 Ac
ZONE:. . . . . . . . . . . . .
R -30
TAX ID #. . . . . . . . . . . . . . .
.0647.02 -98 -2706
REFER T0: . . . . . . . . . . . . . .
. B.M. 2011 - PG. 112
MINIMUM BUILDING SETBACKS:
FRONT:.
CORNER SIDE: . . . . . . . . . . .
.30'
REAR: . . . . . . . . . . . . . . . .
. 30'
SIDE: . . . . . . . . . . . . . .
10'
MINIMUM LOT WIDTH:
.95 FT.
MINIMUM LOT SIZE:. . . . . . .
.30,000 SF
TOWNSHIP:. . . . . . . . . . . . . . .
.HOLLY SPRINGS
General Notes:
1. Topographical :and Boundary data performed by Benton W. Dewar and Associates, Holly Springs,
North Carolina..,
2. The contractor shall notify and cooperate with all utility companies or firms having facilities
on or adjacerA. to the site before disturbing, altering, removing, relocating, adjusting or
connecting to said facilities.
3. All excavation is unclassified and shall include all materials encountered.
4. All structural `ill material shall be free of all sticks, rocks, and clumps of mud.
5. Unusable exccwated materials and all waste resulting from clearing and grubbing shall be
disposed of o=`f -site by the contractor in an approved solid waste landfill.
6. Location of ursderground utilities are approximate and must be field verified. Contact the
NC One Call Center at least 48 hours prior to digging ® 1.800.632.4949. Benton W. Dewar
and Associates Surveying has only located the utilities that are above ground at the time
of field survey,. Underground lines shown hereon are approximate or as reported by
various respor, Bible parties. The surveyor does not guarantee that any underground
structures sucn as utilities, tanks and pipes are located hereon.
7. All pipe lengtr:s are horizontal distances and are approximate.
8. All work shall comply with all applicable codes, regulations, and /or local standards imposed
by local utility.
9. All construction and materials shall meet NCDOT Standards, latest edition. All work within
NCDOT right -cf -way shall meet the specifications and standards of NCDOT.
10. All concrete p:`,pe is to be ASTM C -76, Class III with ram -nek.
11. This property s not located in a Flood Hazard Zone per FEMA Map.
12. All lot dimensi`-_)ns shown are approximate. Consult the boundary survey for actual site
boundary information.
13. The contractor shall be responsible for all work zone traffic control in or adjacent to NCDOT
right -of -way. All signs, pavement markings and other traffic control devices shall conform
to the Manual': on Uniform Traffic Control Devices (MUTCD), 2003 edition as amended.
14. Prior to placir.:g CABC stone base, the contractor should notify the Engineer to
inspect and p -oof roll the subgrade. Any stone placed without prior approval will be the sole
responsibility cf the contractor.
15. DESIGN /FIELD ;CONDITIONS quite easily may vary from that represented in the initial
soils report and /or topographical report. Isolated areas may show up weak and adverse
soils or groundwater conditions may be discovered that were not revealed during the initial
soils investigation. Therefore, the Contractor is to be aware that The Curry Engineering Group, PLLC
will not and cannot be held responsible for any failures to street pavement design as a result
of soil conditions.
16. All utility services, (power, telephone, cable, etc.) are proposed to be underground. Do not
seed or mulch, disturbed areas until all underground utilities have been installed. Utility
Contractors to bring Main Services to R/W as shown in plans.
17. Regulatory signs, stops signs and street name signs shall be manufactured from high
intensity reflective materials and shall be supplied by the contractor.
18. All excess topsoil and unclassified excavation is to be hauled off -site, unless otherwise
directed by th owner.
19. All site construction must be inspected by The Project Engineer at the following stages:
A. Completion of grading subgrade prior to placing Stone Base.
B. Completion of Stone placement prior to paving.
C. Final inspection when all work is complete.
20. The surveyor did not visibly see any cemeteries in any open areas unless otherwise noted.
21. This property does not depict encumbrances that are found during a thorough title search.
22. Contractor to furnish all paint striping as shown.
23. All dimensions are to edge of pavement (EOP) unless indicated otherwise.
24. Contractor shall saw -cut to provide smooth transitions where existing asphalt and /or curb
and gutter is to be removed, or where proposed asphalt meets existing asphalt.
25. Information concerning underground utilities was obtained from available records and field
conditions whr;n possible, but the contractor must determine the exact location and
elevation of a'I.l existing utilities by digging test pits by hand at all utility crossings well in
advance of trenching. If the clearances are less than specified on the plans or 12 inches,
which ever is ! ess, contact the project engineer and the Owner prior to proceeding with
construction.
26. The contractor is responsible for the design and implementation of all required /necessary
sheeting, shoring, and special excavation measures required on the project to meet OSHA,
Federal, State and Local regulations pursuant to the installation of the work indicated on
the drawings. The Owner and The Curry Engineering Group, PLLC accept no responsibility for the design
to install said items.
27. The contractor shall include in the contract price daily record keeping of the as -built
condition of 611 of the underground utilities, construction stakeout associated with the
project. Preparation of the necessary/required as -built plans to be submitted to Wake
County and &.il other information required in connection with release of bonds.
28. The Land Dist�:,irbance Permit must be kept on the work site and shown upon request.
29. The contractor shall include in the contract price any de- watering necessary to construct
the project as; shown on the plans.
30. The contractor shall include in the price, any and all costs associated with providing a
professional e.rngineer on site if required, during the construction of the storm water
management `acilities, underground utilities, etc. as required for as -built certification.
31. All grass, topsoil and 'building debris material' dumped onsite shall be removed in the
base bid prior- to placement of structural fill material.
32. All generated waste shall be disposed of on -site as directed by the owner.
33. Do not permanent apply seed and mulch until underground electric has been installed.
34. All right-of-wrays are to be public.
35. Evaluation of 404 Jurisdictional Wetlands. No filling of grading is to be performed in
areas designa♦ed as 404 jurisdictional wetland until an approved permit has been
obtained fromi the USCOE and NCDENR DWQ.
36. The site is to be served by private well and septic.
37. Soils on the property have been evaluated by a soil scientist.
38. Contractor is :- esponsible for coordinating installation of underground utilities and shall
regrade and reseed any areas disturbed during installation.
AN
.. I1 . is c. ,... ?� Y' � ;.: ..
• n W. Dewer And Associates Th- Curry Engineering Group,
Professional Land Surveyor
133 Spring Ave.
5920 Honeycutt Road
Fuquay- Varina, NC 27526
Holly Springs, NC 27540
919.552.0849 (v)
919.552.9813 (v)
919.552.2043 (f)
919.557.2255 (f)
919.880.9857 (c)
Contact: Ben Dewer, PLS
email: doncurry @curryengineeringgroup.com
Contact: Don Curry, PE
� R/W
R W 50' R W
8' 6' _ 20' 6' 8'
DITCH SHOULDER SHOULDER DITCH
2" S9.5 A ASPHALT
3 MAX 3 MAX -4.0% -- 2.08% 2.087 4.p7, 3 MAX 3 MAX
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STREET
SECTION SEED, STRAW & TACK W /RS
PA VED OR CRS LIQUID ASPHALT AT
RATE EQUAL TO 10 GAL. PER
SCALE: N.T.S. 1000 S.F. PLACE STRAW WITH
NET WHERE APPLICABLE.
TYPICAL SIGHT
DISTANCE EASEMENT
SDE__ 7 10' SDE
R/W - -- - -- • _ - R/W
70'
R/W - - - - R/W
rYPICAL SIGHT DISTANCE DETAIL
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BEFORE YOU DIG
CALL TOLL FREE
1 800 632 4949
NORTH CAROLINA
ONE -CALL CENTER
a
026970
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25' TREE & VEGETATION 50' TREE & VEGETATION `
PROTECTION ZONE A PROTECTION ZONE i
718.58' N 01 °36'55 "W - - ----- --
155.00' I
161.56 I 5.00'1
1 �,S 28.00' _. _ - - - - - 107.24' ;
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J I31' CONC. LEVEL SPREADER m PROPOSED 20'
WITH 130' VEGETATED FILTER SANITARY SEWER
ooe `.; STRIP (SEE DETAILS) EASEMENT I ..... / / I I
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25' TREE &VEGETATION - ''. �,r' �. < i, ; ' , : �f '
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2.57' "
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25' TREE & VEGETATION m LOT LINE (TYP.)
PROTECTION ZONE N N
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B.I.Q. 2003 PG. 12 79 I M I '
-
LEGEND:
CMS - CONCRETE MONUMENT SET
ECM EXISTING CONCRETE MONUMENT
EIP - EXISTING IRON PIPE
EIS EXISTING IRON STAKE
ERB - EXISTING REBAR
ECS - EXISTING COTTON SPIKE
EPK - EXISTING PK NAIL
EN - EXISTING NAIL
ERS - EXISTING RAILROAD SPIKE
IPS - IRON PIPE SET
ISS IRON STAKE SET
RSS - RAILROAD SPIKE SET
NS - NAIL SET
PKS - PK OR MAG. NAIL SET
R/W - RIGHT OF WAY
CL - CENTERLINE
B.M. - BOOK OF MAPS
P.B. - PLAT BOOK
M.B. - MAP BOOK
D.B. - DEED BOOK
SB - SET BACK
EP EDGE PAVEMENT
BC - BACK OF CURB
MH - MANHOLE
ELEV - ELEVATION
UP - UTILITY POLE
TP - TELEPHONE PEDESTAL
C 0 - SEWER CLEAN OUT
- WATER VALVE
WM - WATER METER
HYD - FIRE HYDRANT
T - TELEPHONE
E - ELECTRIC
W - WATER"
S - SANITARY SEWER
G GAS LINE
D - DRAINAGE
GLM - GAS LINE MARKER
. . I—— . . . . . ­11_
o _ _l
STEPHANIE STEVENS i
B PG. 19
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PIN # 0647944862 \ / I` s
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NOTES: ll '• i a
0647966230.: F�IW (4 /`dV �
1. "THERE SHALL BE NO FILLING OR THE ERECTION OF I
IN THE AREAS OF WAc4E COUNTY FLOOD HAZARD SOIL`.
MANAGEMENT AGENCY (FEMA) 100 YEAR FLOOD ZONE
APPROVED BY WAKE COUNTY AND /OR FEMA" 04- 41- 1,2(A -H)J
2. "BEFORE ACQUIRING A BUILDING PERMIT FOR THE LOTS MARKED BY AN
(ASTERISK) THE BUILDER MAY NEED TO OBTAIN A FLOOD HAZARD AREA USE
PERMIT FROM WAKE COUNTY ENVIRONMENTAL SERVICES. THE BUILDERS
ENGINEER, ARCHITECT' AND /OR SURVEYOR (AS APPROPRIATE) MUST CERTIFY ON
ANY PERMIT THAT ALL. FLOOD HAZARD REQUIREMENTS ARE MET."
[14- 41- 1,2(A -H)]
3. DISCONNECTED IMPER /IOUS SURFACES SHALL NOT BE PIPED TO A SWALE OR
LOW POINT ON SITE.
4. TREE PRESERVATION AREA:
10,455 SF REQUIRED FOR STORMWATER MGMT.
11,000 SF PROVIDED FOR STORMWATER MGMT.
THIS BOUNDARY MAY BE ADJUSTED, PROVIDED AN EQUIVALENT AREA OF EXISTING
WOODS IS PROVIDED AND THE PLAT IS MODIFIED AND RECORDED TO REFLECT
THE NEW BOUNDARY.
5. PLANTINGS IN THE TREE PRESERVATION /REFORESTATION AREA SHALL COMPLY
WITH THE REQUIREMENTS OUTLINED IN WAKE COUNTY'S STORMWATER DESIGN
MANUAL, WHICH SPEC7Y PLANTING RATES. PROPOSED PLANTINGS FOR THIS
APPLICATION ARE LOKOLEAF PINES, TO BE PLANTED AT A RATE OF 302 TREES
PER ACRE WITH A 12.'x12' MINIMUM PLANTING AREA PER TREE. ALSO NOTE THAT
THE EXISTING TREES MAY CONTRIBUTE TO THIS PLANTING REQUIREMENT.
1579 ASSUMED WOODED AREA (13.4AC *15 %) =2.01 AC
ACTUAL NEUSE BUFFER AREA = 2.55 AC
REQUIRED TOTAL WOODED / NEUSE AREA TO MEET ON 62 = 2.79 AC (2.01 + 0.78)
ADD 0.24 AC MIN. (10,455 SF) AS RE- FORESTED AREA
IMPERVIOUS AREA CALC;IJLATION
IMPERVIOUS SURFACE COVERAGE SHALL NOT EXCEED
15 % OF THE SUBDIVISION. IMPERVIOUS SURFACE LIMITS
WILL BE STRICTLY ENFORCED INTO 'PERPETUITY.
TOTAL SITE AREA - 16.30 AC.(7110,044 SF)
14.5 ACRES EXCLUDING FOND
TOTAL AREA IN R/W - 1.10 AGREES
IMPERVIOUS IN R/W - 0.5 ACRES
15% MAX. ALLOWABLE
ALLOWABLE IN LOTS 12.25%
14.5 AC. - 1.10 AC. = 13.40 /ACRES
6,500 SF ALLOWABLE PER LOT
DESIGNED BY DON CURRY, P.E.
TARGET CURVE NUMBER CALCULATION
SITE DATA
CURVE NUMBERS
TOTAL AREA - 14.5 ACRES(EXCLUDING
POND)
ZONING - R -30
B C
NUMBER OF LOTS - 11
w
1 PERCENT IMPERVIOUS - 11.02%
60 73
�
R -40W AND R -40
TARGET CURVE NUMBER -
62
U
U
TOTAL VOLUME REQUIRED
- N/A
TOTAL VOLUME PROVIDED
- N/A
NITROGEN CALCULATIONS
GRASS /LAWN -
TN LOADING FROM SITE -
N
0 ui
N/A
PEAK FLOW MANAGEMENT
CALCULATIONS
PRE - DEVELOPMENT PEAK
FLOW - N/A
POST - DEVELOPMENT PEAK
FLOW - N/A
m
1.02
7.03%
SECTIONS
flLLJ
WOODS
55
1.37
9.45%
B
WOODS
55
U
1.66%
W
(REFORESTATION)
yl!
NO lo
0
o
C N
O
0
z
J
o �
I I ?_ 9 PG. 819 N RONALD JOHNSON
PIN # 0647955 41 (` ' T I # 0647955742
t D.B. 11774 PG. 87.2 WALTER LITTLE D.B. ;5t:J-- J EL�"'�"
PIN # 0647956928 12197 PG. 1 PIN
NOTES: ll '• i a
0647966230.: F�IW (4 /`dV �
1. "THERE SHALL BE NO FILLING OR THE ERECTION OF I
IN THE AREAS OF WAc4E COUNTY FLOOD HAZARD SOIL`.
MANAGEMENT AGENCY (FEMA) 100 YEAR FLOOD ZONE
APPROVED BY WAKE COUNTY AND /OR FEMA" 04- 41- 1,2(A -H)J
2. "BEFORE ACQUIRING A BUILDING PERMIT FOR THE LOTS MARKED BY AN
(ASTERISK) THE BUILDER MAY NEED TO OBTAIN A FLOOD HAZARD AREA USE
PERMIT FROM WAKE COUNTY ENVIRONMENTAL SERVICES. THE BUILDERS
ENGINEER, ARCHITECT' AND /OR SURVEYOR (AS APPROPRIATE) MUST CERTIFY ON
ANY PERMIT THAT ALL. FLOOD HAZARD REQUIREMENTS ARE MET."
[14- 41- 1,2(A -H)]
3. DISCONNECTED IMPER /IOUS SURFACES SHALL NOT BE PIPED TO A SWALE OR
LOW POINT ON SITE.
4. TREE PRESERVATION AREA:
10,455 SF REQUIRED FOR STORMWATER MGMT.
11,000 SF PROVIDED FOR STORMWATER MGMT.
THIS BOUNDARY MAY BE ADJUSTED, PROVIDED AN EQUIVALENT AREA OF EXISTING
WOODS IS PROVIDED AND THE PLAT IS MODIFIED AND RECORDED TO REFLECT
THE NEW BOUNDARY.
5. PLANTINGS IN THE TREE PRESERVATION /REFORESTATION AREA SHALL COMPLY
WITH THE REQUIREMENTS OUTLINED IN WAKE COUNTY'S STORMWATER DESIGN
MANUAL, WHICH SPEC7Y PLANTING RATES. PROPOSED PLANTINGS FOR THIS
APPLICATION ARE LOKOLEAF PINES, TO BE PLANTED AT A RATE OF 302 TREES
PER ACRE WITH A 12.'x12' MINIMUM PLANTING AREA PER TREE. ALSO NOTE THAT
THE EXISTING TREES MAY CONTRIBUTE TO THIS PLANTING REQUIREMENT.
1579 ASSUMED WOODED AREA (13.4AC *15 %) =2.01 AC
ACTUAL NEUSE BUFFER AREA = 2.55 AC
REQUIRED TOTAL WOODED / NEUSE AREA TO MEET ON 62 = 2.79 AC (2.01 + 0.78)
ADD 0.24 AC MIN. (10,455 SF) AS RE- FORESTED AREA
IMPERVIOUS AREA CALC;IJLATION
IMPERVIOUS SURFACE COVERAGE SHALL NOT EXCEED
15 % OF THE SUBDIVISION. IMPERVIOUS SURFACE LIMITS
WILL BE STRICTLY ENFORCED INTO 'PERPETUITY.
TOTAL SITE AREA - 16.30 AC.(7110,044 SF)
14.5 ACRES EXCLUDING FOND
TOTAL AREA IN R/W - 1.10 AGREES
IMPERVIOUS IN R/W - 0.5 ACRES
15% MAX. ALLOWABLE
ALLOWABLE IN LOTS 12.25%
14.5 AC. - 1.10 AC. = 13.40 /ACRES
6,500 SF ALLOWABLE PER LOT
DESIGNED BY DON CURRY, P.E.
TARGET CURVE NUMBER CALCULATION
SITE DATA
CURVE NUMBERS
TOTAL AREA - 14.5 ACRES(EXCLUDING
POND)
ZONING - R -30
B C
NUMBER OF LOTS - 11
R -80W AND R -80
1 PERCENT IMPERVIOUS - 11.02%
60 73
VOLUME MANAGEMENT CALCULATIONS
R -40W AND R -40
TARGET CURVE NUMBER -
62
PROPSED CURVE NUMBER
- 62
TOTAL VOLUME REQUIRED
- N/A
TOTAL VOLUME PROVIDED
- N/A
NITROGEN CALCULATIONS
GRASS /LAWN -
TN LOADING FROM SITE -
3.47 Ibs /ac /yr
BUY DOWN(IF IN NRB) -
N/A
PEAK FLOW MANAGEMENT
CALCULATIONS
PRE - DEVELOPMENT PEAK
FLOW - N/A
POST - DEVELOPMENT PEAK
FLOW - N/A
WAKE COUNTY TARGET
CURVE NUMBERS
TOTAL LOT ACREAGE - 13.40 ACRES
ZONING DISTRICT
A
B C
D
R -80W AND R -80
37
60 73
79
R -40W AND R -40
41
62 75
80
R--30, R -20, R -15,
R -5 43
63 76
81
SITE DATA
TOTAL SITE AREA - 14.5 ACRES
EXIST. LAKE /POND - 1.81 ACRES
AREA USED FOR OVERALL DENSITY CALCS - 16.31 AC.
ZONING DISTRICT - R -30
LOT DATA
LAND USE
TOTAL LOT ACREAGE - 13.40 ACRES
AREA(AC,)
IMPERVIOUS AREA PER LOT - 6,500 SF
A
ASSUMED WOODED AREA - 15%
44
ADDITIONAL WOODED AREA - 0.78 ACRES
13.24%
AVERAGE LOT SIZE - 53,064 SF
LOTS
AVERAGE PERCENT IMPERVIOUS PER LOT
- 12.25%
PERCENT IMPERVIOUS FOR SITE - 11.02%
STORMWATER CALCULATIONS
WOODS
77
%AREA
WOODS -
20.82%
GRASS /LAWN -
66.93%
IMPERVIOUS -
12.25%
PROPOSED CURVE NUMBER - 62
SECTIONS
TARGET CURVE NUMBER - 62
IJ VF11 t1 f- r\UIVI rRCL_.1IYIIIVY1f \ i _ I"L_L vnLlu - LJ
TOTAL AREA OF LOTS: 13.40 ACRES
NUMBER OF LOTS - 11
IMPERVIOUS PER LOT - 6,500 SF
% IMPERVIOUS ON LOTS 12.25%
% WOODS ON LOTS - 20.82%
% IMPERVIOUS IN R/W - 45.45%
PERCENT IMPERVIOUS FOR SITE - 11.02%
PERCENT OF TOTAL DISCONNECTED IMPERVIOUS - 50 %(DEFAULT),
HSG
LAND USE
CN
AREA(AC,)
%
A
LOTS
44
1.92
13.24%
B
LOTS
64
8.7
60.00%
D
WOODS
77
1.18
8.14%
A
R/W W /DITCH
88
0.07
0.48%
SECTIONS
B
R/W W /DITCH
88
1.02
7.03%
SECTIONS
B
WOODS
55
1.37
9.45%
B
WOODS
55
0.24
1.66%
(REFORESTATION)
TOTALS:
14.5
100.0%
O
Fin
O
oaa
°
a
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awl
z
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460
Horizontal Alignment Name: CSAC_A
Element: Circular
PC
P|
CC
PRC
Radius:
Degree of Curvature(Arc):
Element: Circular
Nome: CSAC-B
PRC
10+00.00
cc
10028J9
PRC
10OS,7.2O
cc
Radius:
PRC
10830.75
Degree of Cumo
Radius:
10000J1
40
Degree of Curwatu
:
4O^11'20.51^ Left
Bement: Circular
10703.97
PRC
1.31%
P|
33.84
CC
1O7]1.55
PT
Straw with Net
Tangent Direction:
Radius:
0] , 35' 4S.5S' W
Degree of Cur°zhu :
10673.50
Length:
l0OS302O
9973.66
Chord:
Horizontal Alignment
Nome: CSAC-B
Bement: Circular
10+00.00
PC
10028J9
P|
10OS,7.2O
cc
EAST|NG
PRC
10830.75
0
Radius:
10000J1
40
Degree of Curwatu
:
4O^11'20.51^ Left
Length: _
10703.97
Tangent:
1.31%
Chord:
Element: Circular
PRC
CC
PT
Radius:
Degree of Curvoture(Arc):
STATION
NORTHING
EA3TNG
10+00.00
10087.63
10028J9
10+17.89
10OS,7.2O
10011.91
EAST|NG
10617.04
10830.75
0
1 067J.58
10000J1
40
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4O^11'20.51^ Left
9+00.00
10703.97
143~14'22.02^
1.31%
P|
33.84
KJ+0OOO
1O7]1.55
17.89
Straw with Net
Tangent Direction:
32.66
0] , 35' 4S.5S' W
10+35.84
10673.50
10000J1
l0OS302O
9973.66
11+44J4
10719,83
994737
35
181-51'58.81" Right
P1
163-42'08.02"
10+00.00
107,01.55
111]0
P|
-1.00
12+18.O5
1O8�028
69.99
Tangent Direction:
11+44.74
10719.83
9947.77
11+62.03
1071-:3.08
9959.81
107-'6.75
9918]9
11+78.38
10750.88
8957.97
48-11'22.87" Left
P|
143^14'22.02^
12+18.85
10685i28
33.64
P|
17.09
7 74
1125�21
32.68
Direction: Dire�on�
STATION
NOR TH|NG
EA3TNG
10+00.00
1118-185
9913.50
10+20.28
11 2C3.99
9910.67
EAST|NG
11175.74
987379
10+49.24
11215.03
9883]0
40
PO8
70-31'43.61" Left
9+00.00
10703.97
14J^14'22.02^
1.31%
P|
49.24
KJ+0OOO
1O7]1.55
28.28
Straw with Net
Tangent Direction:
4519
0] , 35' 4S.5S' W
10+4924
11215.53
9883]8
112LS05
9891J9
12+0228
1125_�)�24
882621
35
250-,31'43.62" �2^
3 Right
P1
16342'08.02'
10+00.00
107,01.55
153�U4
P|
-1.QO
12+18.O5
1O8�028
57]5
Tangent Direction:
Horizontal Alignment Name: WILDLIFE
'
LANE
SLOPE
TEMPORARY LINER
PERMANENT LINER
STATION
N0RTH|NG
EAST|NG
Element:
Linear
5A1%
Straw with Net
NVA
PO8
9+00.00
10703.97
10292.42
1.31%
P|
KiVA
KJ+0OOO
1O7]1.55
1O1S245
Straw with Net
Tangent Direction:
S
0] , 35' 4S.5S' W
Tangent Length:
100.00
Element:
Linear
P1
10+00.00
107,01.55
10192.45
P|
12+18.O5
1O8�028
9973.66
Tangent Direction:
S
88, 37' 08.50' W
Tangent Length:
218.85
Element:
Linear
P|
12+18.85
10685i28
9973.06
P|
7 74
1125�21
9916.20
Direction: Dire�on�
N
5^53'42.07^ W
Tangent Length:
558.89
Element:
Linear
P|
17+77.74
1125 -2.21
8918.26
POE
1 J4
11248.O5
9891.39
Tongent Direction:
S 84-06'17.93" W
|
!
Tangent Length:
25.00
|
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1'�
1 HORIZONTAL GEOMETRY
C-02 SCALE: NONE
'
�
LOT LINE
(TyP-) `4D
E (�3, I _(,'O il 11 ��3 I- _­ 1 0 <
SETBACK
-- \ \
/TYP]
,� ,
`f1UII lJL-II
o'o/°�� � ='v= ^^' INSTALL 2' WIDE ±1 BASE
|DITCH, WITH STRAW W/ NET
--- --'- WITH
�
STRAW Wy NET
/
L | �m m
________________� L_____----- ------ -- `-- - / / � ��
u
\
5Si -- -- --~----- --
............ . . . � �_ _ _ � -- -��-� ��� B / LJL \ '
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= " ' i i C t |
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| D�B' 1l9l� P�� 1+30 ��\ 1277Q P�� 1810 - PIN
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' P|N � O�47855441 � 0�47�5�742 � RVNALD JOHNSON
nm��
| | Y \ \ ^ D.B. 11774 PQ, 872 LO-DLE D.B. ~ / � ~- j �
DITCH NAME
STATION RANGE
SLOPE
TEMPORARY LINER
PERMANENT LINER
D1-LT
lo+ob - 14+53 LT
5A1%
Straw with Net
NVA
D2-LT
14+53 - 17+78 LT
1.31%
Straw with Net
KiVA
DITCH-OUT
Outlet at 14+53
1.65%
Straw with Net
Kf.A
L OUXU
--_m
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9f00
10f00
11f[)0 12f00
13f[)0
14f00
'~
3 PROFILE: -WILDLIFE
LANE-
C-02) SCALE: H}RI7.: 1"=50'
VERT.: 1 " =5'
15�O{]
16f(}{}
17f00
18f[)0 18f50
9f5O
435 C�
10f50 11f5(] 12f50
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vo '
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bid
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430 06/12/12 0| 5
Uj
10f50 11f5{} 12f0(]
NOT FOR ������������Uo��o0|
CONSTRUCTION uo� �� u~�"n� v/
9f5[)

100' NEUSE
RIVER RIPARIAN
BUFFER
EIP00'�
Lf) 0 it
00
v",
RICHARD FLETCHER
D.B. 11365 PG. 1700
PIN -y,t 064794-2706
Va .0e
O
\41:1
9
101
'XI
CONTROL. ECM
CORNER
Cf
l 20' SAN. SEWER EASEl\A&,I_F
B.M. 2003 PG. 1279
STEPHANIE STEVEfLIS
L.S. '12696 PG. i910
PIN 11 0647944862
NOTES:
1. THE TEMPORARY DIVERSION DITCHES, SILT FENCE,
AND LIMITS OF DISTURBANCE SHOWN ON THIS PLAN
ARE GRAPHICAL REPRESENTATIONS OF THE ACTUAL
EROSION CONTROL MEASURES THAT WILL BE
INSTALLED UNDER THIS PROJECT. DO TO THE SCALE
OF THIS DRAWING, THESE MEASURES ARE
GRAPHICALLY DEPICTED BEYOND WHERE THEY WILL
ACTUALLY BE INSTALLED IN THE FIELD.
2. DIST AREA = 2.44 AC
3. ANY GRADING BEYOND THE DENUDED LIMITS SHOWN
IN THE PLAN IS A VIOLATION OF THE COUNTY
EROSION CONTROL ORDINANCE & IS SUBJECT TO A
FINE.
4 GRADING MORE THAN 1 ACRE WITHOUT AN APPROVED
EROSION CONTROL PLAN IS A VIOLATION OF THE
COUNTY EROSION CONTROL ORDINANCE & IS SUBJECT
TO A F1 N E.
4. ALL AREAS MUST BE SEEDED & MULCHED WITHIN 15
CALENDAR DAYS. REFER TO EROSION CONTROL
DETAILS AND EROSION CONTROL ORDINANCE FOR
ADDITIONAL REQUIREMENTS.
5. THREE BAFFLES SHALL BE INSTALLED IN SEDIMENT
BASIN PER DETAIL.
6. WAKE CO. ENVIRONMENTAL SERVICES
CONTACT: BETSY PEARCE 919-856-7541
P'G', 2464 Plf,,l
j
047 ),)4'i
_ 9 6
Inxeinklim
­
J1
PQ
00
250,75' J-]
CONSTRUCTION
(go) ENTRANCE
R t J,'-) E L - I i-I I N114,4611 i
DBE 1 19 18 PG I ..)
pli,l l,'/ oE i- -4. `
W
z
0
W
5;
w
z
0
Z
L Li
C)
7
0 LO
C-4
L
0
C C4
ci
z
uj
o _j
CL-
X9-1
LIMITS OF DISTURBED AREA
MIN. L'xW'xD'
CONSTRUCTION ENTRANCE
NOTES
ROCK PIPE INLET PROTECTION
SKIMMER BASIN
SILT FENCE
1
ROCK CHECK DAM
48'x96'x3.5'
TEMPORARY DIVERSION DITCH
W
z
0
W
5;
w
z
0
Z
L Li
C)
7
0 LO
C-4
L
0
C C4
ci
z
uj
o _j
CL-
X9-1
TYPE
MIN. L'xW'xD'
WEIR LENGTH
NOTES
INSTALL A 2.5" FAIRCLOTH
1
SKIMMER BASIN
48'x96'x3.5'
10,
SKIMMER WITH A 2" ORIFICE
FOR DRAWDOWN & 3 BAFFLES.
2 � 19 PIN
I, }179 PG. 18
CARO
`Ss
3
4 3 & _� 0 zb 2
R�OkIAL-1) JOHNI:�3011,1
4�
11774 8/2
�iY,Ad] E1� I LM3,
01
3 E
PIN 064­1795,f
12 1 7 1 1-:1114
06/12/12
NOT FOR CONSTRUCTION
)6d71966'2130
SCALE: 1 50'
0 50 100 125 150
R/W R/W
O
oat
p p
aw
TEMP. SEDIMENT BASIN SCHEDULE
BASIN #
TYPE
MIN. L'xW'xD'
WEIR LENGTH
NOTES
INSTALL A 2.5" FAIRCLOTH
1
SKIMMER BASIN
48'x96'x3.5'
10,
SKIMMER WITH A 2" ORIFICE
FOR DRAWDOWN & 3 BAFFLES.
BEFORE YOU DIG
CALL TOLL FREE
1 800 632 4949
NORTH CAROLINA
ONE-CALL CENTER
• rmmmI
P-4
bA
CARO
`Ss
6-
4�
026970
I N
L
06/12/12
NOT FOR CONSTRUCTION
SCALE: 1 50'
0 50 100 125 150
C=03J

Erosion & Sedimentation Control Narrative:
.-
PROJECT DESCRIPTION
Management Strategies
The purpose of this project is to fill and level the property for a future undetermined use.
1. Perimeter measures are to be installed prior to grubbing or gradln ,!.
The property is privately owned. See Owner information this sheet. The site is currently undeveloped.
2. Tail Ditches shall be stabilized immediately following their constructr,on. As an alternate, rock
lil
check dams may be provided at their outlets and/or the terminal :downstream end of
disturbance is implemented.
A I disturbed durin construction. The mcx' fill will
Approximately 2.44 acres will be g imum II II be 2 -3 feet.
until ground cover
3. Stockpile and /or waste areas must be maintained within the limits of the areas protected by the
The ppro11'ect is scheduled to begin construction in Spring 2011 with project completion and final
gThe
proposed measures and otherwise temporarily seeded if to be left stockpiled over 15 calendar days.
stabilization by Summer, 2012. erosion and sediment control progrrn for this project will include
4. Construction shall be planned so that grading operations can begin: and end as quickly as
the installation of a suitable construction entrance, silt fence, and see6'ng of the site.
possible.
2. IF CONSTRUCTION ON THE SITES ARE SUCH THAT THE MUD
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
ADJACENT PROPERTY
sediment control practices.
See plan for adjacent property owners.
Vegetative Ground Cover
SOILS
Immediately following grading, all areas shall receive seeding, as per the seeding schedule.
The soil at this site is a sandy clay.
EROSION AND SEDIMENT CONTROL MEASURES
All vegetative and structural erosion and sediment control practices shc:l be constructed and
Maintenance
1. Reseed and mulch bare spots larger than 9 square feet.
maintained by the contractor according to these plans and specifications, the minimum standards
2. Maintain all seeded areas until uniform stand is acceptable.
3. If growth is not established by final project inspection, continue sp,� cified attention until the
of the NC Dept. of Environmental Management - Land Quality Section, :and Article 10 of the Wake
stand is acceptable.
County Unified Development Code latesf edition. The contractor shall CIso follow any additional
requirements as outlined by the �roject Engineer.
4. Correct and repair all undue settling and erosion within 1 year after final inspection.
5. Remove from the site, all erasion control structures after complete- stabilization at end of
construction period.
Structural Practices
6. Remove silt from silt fence after accumulation.
1. Vehicle wheels shall be clean when leaving the site to prevent the tracking of mud on paved
WHICHEVER IS
roads.
Calculations
2. Construction Road Stabilization: Construction traffic shall be limited -o stabilized areas. At a
The practice utilized for the proposed site did not require formal calc<.alations.
minimum, a temporary gravel construction entrance shall be provides. as shown on this
GREATER.
drawing.
3. Silt Fence & Silte Fence Outlets: Silt fences shall be provided where shown and as needed on the site plan.
These barriers shall be used to contain sediment.
Vegetative Practices
Temporary Seeding: All denuded area or areas to be grade within 15 calendar days shall receive temporary
STONE AND REPLACEMENT WITH FRESH STONE.
seeding within 15 days of completing initial earthwork. Temporary seec'ing shall also be used to
3
stabilize finished grade areas if the time of is outside the specified permanent seeding periods.
gar
Temporary seeding shall be in accordance with temporary seeding spec "fications.
Seadbed Preparation:
1. Chisel compacted areas and spread topsoil three inches deep over adverse soil conditions,
if available.
2. Rip the entire area to six inches deep.
3. Remove all loose rock, roots and other obstructions, leaving surface reasonably smooth
and uniform.
4. Apply agricultural lime, fertilizer and superphosphate uniformly and mjix with soil
(see mixture .
5. Continue tillage until a well - pulverized, firm, reasonably uniform seedbed is prepared four
to six inches deep.
6. Seed on a freshly prepared seedbed and cover seed lightly with seedling equipment or
cultipack after seeding.
7. Mulch immediately after seeding and anchor mulch.
8. Inspect all seeded areas and make necessary repairs or reseedings within the planting season,
if possible. If stand should be more than 60% damaged, re-establish following the original
lime, fertilizer and seeding rates.
9. Consult S &EC Environmental Engineers on maintenance treatment and; fertilization after
permanent cover is established.
Mixture
Agricultural Limestone ..........................2 tons /acre (3 tons /acre in clay soils)
Fertilizer ....................... .........................1,000 Ibs /acre - 10 -10 -10
Superphosphate ........ ............................500 Ibs /acre - 20% analysis
Mulch...................... ..............................2 tons /acre - small grain straw
Anchor .......................... ........................Asphalt emulsion at 300 gals /acre
Seeding Schedule
For Shoulders, Side Ditches, Slopes (Max 3:1):
Date TyVe Planting Rate
Aug 15 - Nov 1 Tall Fescue 300 Ibs /acre
Nov 1 Mar 1 Tall Fescue & Abruzzi Rye 300 Ibs /acre
Mar 1 - Apr 15 Tall Fescue 300 Ibs /acre
Apr 15 -Jun 30 Hulled Common Bermudagrass 25 Ibs /acre
Jul 1- Aug 15 Tall Fescue AND Browntop 125 Ibs /acre (Tall Fescue); 35 Ibs /acre
Millet or Sorghum -Sudan (Browntop Millet); 30 lbs /acre
Hybrids * ** (Sorghum - Sudan Hybrids)
For Shoulders, Side Ditches, Slopes (3;1 to 2:1):
Date JWee Panting Rate
Mar 1 - Jun 1 Sericea Lespedeza (scarified) 5 0 Ibs /acre (Sericea Lespedeza);
and use the following
combinations:
Mar 1 - Apr 15 Add Tall Fescue 120 Ibs /acre
Mar 1 - Jun 30 Or add Weeping Love grass 10 Ibs /acre
Mar 1 - Jun 30 Or add Hulled Common 25 Ibs /acre
Bermudagrass
Jun 1 - Sept 1 Tall Fescue AND Browntop 120 Ibs /acre (Tall Fescue);
Mullet or Sorghum -Sudan 35 Ibs /acre (Browntop Mullet);
Hybrids * ** 30 Ibs /acre (Sorghum -Sudan
H)brids)
Sept 1 - Mar 1 Sericea Lespedezo (unhulled - 7C Ibs /acre (Sericea Lespedeza);
unscarified) AND Tall Fescue 123 Ibs /acre (Tall Fescue)
Nov 1 - Mar 1 AND Abruzzi Rye 25 Ibs /acre
Consult S &EC Environmental Engineers for additional information concerncng other alternatives for
vegetation of denuded areas. The above vegetation rates are those that do well under local conditions;
other seeding rate combinations are possible.
* ** TEMPORARY: Reseed according to optimum season for desired permanent vegetation. Do not allow
temporary cover to grow more than 12" in height before mowing; otherw se, fescue may be shaded out.
Required Wake County Construction Sequence:
1. Schedule a preconstruction conference with the Environmental Engineer, Debra Greene at
919 -842- 6215. Obtain a land- disturbing permit.
2. Clear the area needed to construct the proposed construction entrance.
3. Construct the entrance as shown on the plans. Maintain the construct =on entrance daily
to ensure that mud and silt will not be tracked onto the paved surface. If mud is tracked
onto the surface, it is to be removed immediately.
4. Clear the area needed to construct the perimeter erosion control mecsures including silt
fence, rocks check dams, temporary diversions, sediment basin, and other measures as
shown on the approved plan. Install proposed devices. Seed temporary di ;•ersions, berms and
basins immediately after construction.
5. Call Betsy Pearce for an onsite inspection by the Environmental Engineer to obtain a
Certificate of Compliance.
4. Begin clearing and grubbing. Maintain devices as needed.
5. Rough grade all roadways and parking lots.
6. Construct sanitary sewer system throughout project.
7. Install storm sewer, and protect inlets with block and gravel inlet controls, sediment traps
or other approved measures as shown on the plan. Begin construction, building, etc.
8. Stabilize site as areas are brought up to finish grade with vegetation, paving, ditch
linings, etc. Seed and mulch denuded areas within fifteen (15) days of completion of any
phase of construction.
See notes and details on D -02 for slope stabilization with matting on 2:1 and 3:1 slopes
(and steeper, as needed during construction).
9. When construction is complete and all areas are stabilized completely, call Betsy Pearce
for an inspection by the Environmental Engineer.
10. If site is approved, remove temporary diversions, silt fence, sediment basins, etc., and
seed out or stabilize any resulting bare areas. All remaining permanent erosion control
devices, such as velocity dissipators, should now be installed.
11. When vegetation has become established, call for a final site inspection by the
Environmental Engineer, Betsy Pearce. Obtain a Certificate of Completion.
_ - _ _ TOP ELEVATION OF- :STORMWA - - - _ -
T� - #5 WASHED
STONE
EXISTING SLOPE CI
EXISTING SLOPES
0.5'-l' ------------- I I1=
W
XCEYED RIP RAP
- 111�11]�= 1j111F� #5 WASHED 'STONE
FRONT VIEW
NOTE: REMOVE SEDIMENT ACCUMULATION FROM BEHIND
CHECK DAMS TO PREVENT DAMAGE TO CHANNEL VEGETATIO +N.
FLOW SHOULD BE MAINTAINED THROUGH THE DAM.
COUNTY
NORTH CAR OLINA STANDARD CHECK DAM
EFFECTIVE: 01/31/08
0.5' -1
LMAk
cmn
SIDE VIEW
CONSTRUCTION NOTES.
HEIGHT & WIDTH DETERMINED BY
EXISTING TOPOGRAPHY AND
SEDIMENT STORAGE REQUIRED.
KEY RIP RAP INTO THE DAM
FOR STABILIZATION.
EXISTING -
GROUND
STEP SEQUENCE
3 CLASS 1 RIP RAP (SEE SECTION THRU BASIN
LL \ \. / / SLOW)
r INVERT '° RIP RAP HEADWALL
PIPE
#5 WASHED STONE. 1' -0" THICK x 3' -0" HIGH MINIMUM
SEDI NT
ME /
---' / STORAGE AREA
/ f PERSPECTIVE VIIEW
1 NO SCALE
AREAS TO BE DISTURBED SEDIMENT STORAGE RIP RAP
(CUT, FILL, ETC.) FLOOD STORAGE ZONE HEADWALL
PIPE QTR
1 r INVERT NATURAL GROUND
FLOtv 1.5 3 I/ - - FLOW
FLOW
I -ll Tll � - ITi -ITi _ i I_i i I
CLASS 1i RIP -RAP
MAXIMUM SEDIMENT DEPTH
(CLEAN OUT POINT) #5 WASHED STONE
SECTION THRU CATCH BASIN FILTER AND CULVERT PIPE
AKE NO SCALE
COUNTY
oRTH CAROLINA STANDARD HORSESHOE; INLET PROTECTION
EFFECTIVE: 01/31/08
50' MIN.
.-
NOTES:
Timeframe Exceptions
BUT SUFFICIENT TO KEEP
7 days
None
1. PUT SILT FENCE OR TREE PROTECTION FENCE UP TO
lil
SEDIMENT ON SITE
Slopes steeper than 3:1
7 days
ENSURE CONSTRUCTION ENTRANCE IS USED.
Slopes 3:1 or flatter
14 days
7 days for slopes greater than 50' in length
All other areas with slopes fatter than 4:1
U
2. IF CONSTRUCTION ON THE SITES ARE SUCH THAT THE MUD
IS NOT REMOVED BY THE VEHICLE TRAVELING OVER THE
W
STONE, THEN THE TIRES OF THE VEHICLES MUST BE WASHED
2 " -3" STONE TO BE USED'­.:
N
25' OR WIDTH OF
BEFORE ENTERING THE PUBLIC ROAD.
EXISTING
' :. (SURGE STONE OR RAILROAD .:
PROPOSED STREET,
ROADWAY
BALLAST) ,.
XUY
WHICHEVER IS
3. MAINTAIN GRAVEL PAD IN A CONDITION TO PREVENT MUD OR
S
GREATER.
SEDIMENT FROM LEAVING CONSTRUCTION SITE. ENTRANCE
WILL REQUIRE PERIODIC REMOVAL OF SEDIMENT -LADEN
STONE AND REPLACEMENT WITH FRESH STONE.
PLAN VIEW
3
35' MIN. 15' MIN. NEW CONSTRUCTION
EXISTING ROADWAY
:. "
1 2 /\ j\ MIN.
6" MIN. j \ \\ \\ \\
FABRIC UNDER STONE
CROSS SECTION
A
COUNTY
NORTH CAROLINA STANDARD CONSTRUCTION ENTRANCE
EFFECTIVE: 01 /31/08
MINIMUM 1(
LINE WIRES
8'-0" MAXIMUM
FRONT VIEW -
STEEL POST
NOTE: WOVEN WIRE FABRIC
1. USE SILT FENCE ONLY WHEN DRAINAGE AREA SILT FENCE FABRIC
DOES NOT EXCEED 1/4 ACRE AND NEVER IN
AREAS OF CONCENTRATED FLOW. _
2. REMOVE SEDIMENT DEPOSITED AS NEEDED TO , 3 FILL SLOPE
PROVIDE STORAGE VOLUME FOR THE NEXT RAIN 26
AND TO REMOVE PRESSURE ON THE SILT
FENCE.
N
GRADE
6" MINIMUM COVER
OVER SKIRT *
ANCHOR SKIRT AS DIRECTED
BY ENGINEER
rA SIDE VIEW
TY OLINA STANDARD TEMPORARY SILT FENCE
EFFECTIVE: 01/31/08
IIMUM 12 -1/2 GAUGE
ERMEDIATE WIRES
GRADE
VARIABLE 8' -0" 5' -0"
PAVEMENT SHOULDER
WIDTH WIDTH
4-
0.25" / FT. - 0.25" / FT. FT. +2" /`
_ 1 /
FT.
_225"
5' -0"
SHOULDER SECTION
1 NCDOT DRIVEWAY TURNOUT GRADES
D-01 SCALE: N.T.S.
NPDES STABILIZATION TABLE
.-
U
Timeframe Exceptions
Perimeter dikes, swales, ditches and slopes
7 days
None
J
lil
None
Slopes steeper than 3:1
7 days
If slopes are 10' or less in length and are not
steeper than 2:1, 14 days are allowed.
Slopes 3:1 or flatter
14 days
7 days for slopes greater than 50' in length
All other areas with slopes fatter than 4:1
U
O
W
N
H
5
20
O
w
XUY
S
>
3
m
U�
ww
0
3
z
,n
N
0
C14
N
O
.-
cV
M
t2
0
N
00 0
0
Z
NPDES STABILIZATION TABLE
Site Area Description
Stabilization
Timeframe Exceptions
Perimeter dikes, swales, ditches and slopes
7 days
None
High Quality Water (HQW) Zones
7 days
None
Slopes steeper than 3:1
7 days
If slopes are 10' or less in length and are not
steeper than 2:1, 14 days are allowed.
Slopes 3:1 or flatter
14 days
7 days for slopes greater than 50' in length
All other areas with slopes fatter than 4:1
14 days
None, except for perimeters and HQW Zones

F---T
PLAN VIEW
OTES:
1. BAFFLE MATERIAL SHOULD BE SECURED AT THE BOTTOM AND SIDES
USING STAPLES OR BY TRENCHING AS FOR SILT FENCE.
2. MOST OF THE SEDIMENT WILL ACCUMULATE IN THE I ST BAY,
WHICH SHOULD BE READILY ACCESSIBLE FOR MAINTENANCE.
3. PROVIDE 3 B,'fFLES (USE TWO IF LESS THAN 20 FEET IN LENGTH). PROVIDE
5 BAFFLES FCR DRAINAGE AREAS GREATER THAN 10 ACRES.
4. BAFFLE SHALL BE 700 G/M2 COIR EROSION BLANKET.
5. TOPS OF BAFFIES SHOULD BE 2 INCHES LOWER THAN THE TOP OF THE BERMS
6. INSPECT BAFFLES FOR REPAIR ONCE A WEEK AND AFTER EACH RAINFALL
SUPPORT ROPE
TO WIRE TO
PREVENT SAGGING
CROSS SECTION
SUPPORT POST
24" INTRO BOTTOM
OR SIDE
STAKE TO
SUPPORT WE
COIR M:SH OR SIMILAR, STAPLED OR
TRENC�D INTO BOTTOM OR SIDE
L=== STANDARD BAFFLES DETAIL
EFFECTIVE: 01/311d08
3 TIMES I.D.
PLAN VIEW NOTES:
1. L = THE LENGTH OF THE RIPRAP APRON.
2. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT
LESS THAN 6" (INCHES).
J. /-\ rl[_IrR 0LAPIr\E_I OR HLILN FABRIC SHOULD or
INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
FILTER
FABRIC
SECTION 'A -A'
STANDARD PIPE OUTLET TO FLAT AREA
NO WELL-DEFINED CHANNEL
2
NOTES
1. L = THE LENGTH OF THE RIPRAP APRON,
2. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT
PLAN VIEW LESS THAN 6" (INCHES).
3. IN A WELL-DEFINED CHANNEL EXTEND THE APRON UP THE
CHANNEL BANKS TO AN ELEVATION OF 6" (INCHES) 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 RIPRAP AND SOIL FOUNDATION,
PIPE oa
d
FILTER
SECTION 'A-A' FABRIC
OUNTY
STANDARD PIPE OUTLET TO WELL-DEFINED CHANNEL
EFFECTIVE: 01/31/08
PLAN VIEW
(STD) I' MIN FREEBOARD TOP OF BERM
EMERGENCY
SPILLWAY
SKIMMER,, ELEVATION
188' MIN
IV
0
3:
PA
PAD
�SIALL
TOP OF DAM
TARP PROTECT ION
INLET CMP OUTLET PIPE
PROTECTED (AS NEEDED) CROSS SECTION
FROM. EROSION WITH
DITCH 1U11 TARP
RIPRAP, TARP, MATTING
OR EQUIVALENT.
(MIN.
EDGE MIN, 12')
NOTES:
_JI, IN
1) BASIN SHOULD BE CLEANED OUT WHEN CAPACITY REACHES AN ELEVATION REPFESENIING THAT THE BASIN IS HALF-FULL.
2) THE TARP USED TO PROTECT THE WEIR SHALL BE THE WIDTH SPECIFIED. THE LEsiGTH OF THE TARP SHALL BE ACCORDING
`HEIR LENGTH
TO AVAILABLE SUPPLY. IF MULTIPLE TARPS ARE TO BE USED, THEN TARPS SHALL. BE OVERLAPPED AT LEAST 12". THE
SECTFON THRU WEIR
(STD) I' MIN FREEBOARD TOP OF BERM
EMERGENCY
SPILLWAY
SKIMMER,, ELEVATION
NOTES:
1. TEMPORARY DIVERSION DITCH TO BE USED TO INTERCEPT FLOW AND/OR DIVERT TO A SEDIMENT CONTROL MEASURE OR BMP.
2. SILT SHALL BE REMOVED WHEN DITCH IS ONE-HALF FULL.
3. DITCH SHALL BE RECONSTRUCTED WHEN DAMAGED BY EQUIPMENIT OR COVERED BY FILL.
4. STABILIZE DIVERSION DITCH BERM WITH TEMPORARY SEEDING, MULCH WITH TAC, AND/OR EROSION CONTROL NETTING.
WASTE MATERIAL - COMPACT,
SEED & MULCH AFTER
2 CONSTRUCTION OF DITCH ........ .... 1.:
III jIF 2v
.
' VAR10 '
-fill
VAR. =111 III I I
-Ed I
i fi =r�_-' i i i i i i i i if E,"mw I-=,,' ri I[-=E I I � �kj'jj 0' 2'
Im
CROSS SECTIONAL VIEW
STANDARD TEMPORARY DIVERSION DITCH
OUTLET END CONNECTION
TO OUTLET PIPE OR RISER
FOR CHANNEL INSTALLATION,
ANCHOR NETTING OR MATTING
IN A 6" TRENCH AT UPPER
END OF CHANNEL. COMPACT
SOIL FIRMLY AND STAPLE
EVERY FOOT JUST BELOW
THE ANCHOR SLOT.
STANDARD SKIMMER DETAIL
\N PA
12" WIDE LEVEL \�o 7�� 3INCHES OF SURGE STONE
SPREADER (D50 MAX = 1")
30' FILTER STRIP
1 11-1!!
-REINFORCED CHANNEL 0 A VTH-IL12-11 I-
3 ft. WIDE STRIP
OF FILTER FABRIC
APPROPRIATELY SIZED LEVEL SPREADER CROSS SECTION
CONCRETE FOOTER -/
LEVEL SPREADER CROSS SECTION
D-02) SCALE: N.T.S.
I= I
RECEIVING
POND
NOTES:
1. LEVEL SPREADER DESIGN IS BASED ON CURRENT
NCDENR BMP MANUAL, CH 8.
2. INSPECT AFTER EACH RAINFALL, UNTIL VEGETATION IS
WELL ESTABLISHED, AND MAKE ANY NECESSARY
REPAIRS; AFTERWARDS, INSPECT PERIODICALLY AND
KEEP VEGETATION HEALTHY AND MAINTAINED.
3. LEVEL SPREADER SHOULD BLEND SMOOTHLY INTO THE
DOWNSTREAM RECEIVING AREA WITHOUT ANY ABRUPT
DROPS OR IRREGULARITIES TO AVOID CHANNELIZATION
AND/OR TURBULANCE.
V)
z
O
J
S
DISSIPATER
I 'S'P'
IV
0
3:
PA
PAD
�SIALL
RIP RAP
?BF �
INLET CMP OUTLET PIPE
PROTECTED (AS NEEDED) CROSS SECTION
FROM. EROSION WITH
RIPRAP, TARP, MATTING
OR EQUIVALENT.
NOTES:
1) BASIN SHOULD BE CLEANED OUT WHEN CAPACITY REACHES AN ELEVATION REPFESENIING THAT THE BASIN IS HALF-FULL.
2) THE TARP USED TO PROTECT THE WEIR SHALL BE THE WIDTH SPECIFIED. THE LEsiGTH OF THE TARP SHALL BE ACCORDING
TO AVAILABLE SUPPLY. IF MULTIPLE TARPS ARE TO BE USED, THEN TARPS SHALL. BE OVERLAPPED AT LEAST 12". THE
UPSTREAM 12" TARP SHALL OVERLAP THE DOWNSTREAM TARP. THE TARP SHALL BE 50 MIL. HEAVY DUTY SILVER TARPAULINS
OR EQUIVALENT FOR U.V. RESISTANCE.
3) PROVIDE A MINIMUM OF THREE POROUS BAFFLES TO EVENLY DISTRIBUTE FLOW ACROSS THE BASIN, REDUCING TURBULENCE.
4) BAFFLE MATERIAL MUST BE SECURED AT THE BOTTOM AND SIDES USING STAPLES OR BY TRENCHING AS FOR A SILT FENCE.
5) MOST OF THE SEDIMENT WILL ACCUMULATE IN THE FIRST BAY, SO THIS SHOULD BE READILY AVAILABLE FOR MAINTENANCE.
6) DURING THE CONSTRUCTION PHASE OF THE PROJECT, PERMANENT STORMWATER RISER SHALL ONLY DEWATER FROM THE TOP OF PIPE.
E
7) POND SHALL NOT BE CONVERTED FOR STORMWATER USE UNTIL APPROVED BY ENMRONMENTAL ENGINEER.
- COUNTY
MA
STANDARD SKIMMER BASIN
iEFF CTIVE::01/31/08!
NOTES:
1. TEMPORARY DIVERSION DITCH TO BE USED TO INTERCEPT FLOW AND/OR DIVERT TO A SEDIMENT CONTROL MEASURE OR BMP.
2. SILT SHALL BE REMOVED WHEN DITCH IS ONE-HALF FULL.
3. DITCH SHALL BE RECONSTRUCTED WHEN DAMAGED BY EQUIPMENIT OR COVERED BY FILL.
4. STABILIZE DIVERSION DITCH BERM WITH TEMPORARY SEEDING, MULCH WITH TAC, AND/OR EROSION CONTROL NETTING.
WASTE MATERIAL - COMPACT,
SEED & MULCH AFTER
2 CONSTRUCTION OF DITCH ........ .... 1.:
III jIF 2v
.
' VAR10 '
-fill
VAR. =111 III I I
-Ed I
i fi =r�_-' i i i i i i i i if E,"mw I-=,,' ri I[-=E I I � �kj'jj 0' 2'
Im
CROSS SECTIONAL VIEW
STANDARD TEMPORARY DIVERSION DITCH
OUTLET END CONNECTION
TO OUTLET PIPE OR RISER
FOR CHANNEL INSTALLATION,
ANCHOR NETTING OR MATTING
IN A 6" TRENCH AT UPPER
END OF CHANNEL. COMPACT
SOIL FIRMLY AND STAPLE
EVERY FOOT JUST BELOW
THE ANCHOR SLOT.
STANDARD SKIMMER DETAIL
\N PA
12" WIDE LEVEL \�o 7�� 3INCHES OF SURGE STONE
SPREADER (D50 MAX = 1")
30' FILTER STRIP
1 11-1!!
-REINFORCED CHANNEL 0 A VTH-IL12-11 I-
3 ft. WIDE STRIP
OF FILTER FABRIC
APPROPRIATELY SIZED LEVEL SPREADER CROSS SECTION
CONCRETE FOOTER -/
LEVEL SPREADER CROSS SECTION
D-02) SCALE: N.T.S.
I= I
RECEIVING
POND
NOTES:
1. LEVEL SPREADER DESIGN IS BASED ON CURRENT
NCDENR BMP MANUAL, CH 8.
2. INSPECT AFTER EACH RAINFALL, UNTIL VEGETATION IS
WELL ESTABLISHED, AND MAKE ANY NECESSARY
REPAIRS; AFTERWARDS, INSPECT PERIODICALLY AND
KEEP VEGETATION HEALTHY AND MAINTAINED.
3. LEVEL SPREADER SHOULD BLEND SMOOTHLY INTO THE
DOWNSTREAM RECEIVING AREA WITHOUT ANY ABRUPT
DROPS OR IRREGULARITIES TO AVOID CHANNELIZATION
AND/OR TURBULANCE.
V)
z
O
J
w _j
V)
IV
0
3:
H
.�lllll
0
N
L41
0
z
0 ILL.
mmim
WEIR TO BLIND SWALE AND
LEVEL SPREADER As
FLOW = 3.02 CFS mr
FLOW DEPTH = 5.25'
WEIR LENGTH = 4'
.dmpp
RECEIVING DITCH ELEV. "A" ELEV. PA'
FLOW
112"
2"
5.25"
.4
I IL
3 0 0 psf
.3 CN
.4, C' 'b
ONCRETE'.WOR
AN All
U1
4 4 INSTALL NCDOT CLASS 'B'
2:1 1' 2:1 RIP-RAP OVER MIRAFI, 140N
LINER IN FORBAY WEIR.
4T
Lu
cm,
FOREBAY/FLOW-SPLITTER*
- fti
2 OUTLET TO BLIND SWALE-
D-02 SCALE: N.T.S.
411;ft
INSTALL NCDOT CLASS 'B' 25
10.' BYPASS SWALE 3' WIDE c K
RIP-RAP OVER MIRAFI, 140N 11110i
LINER IN 110 SF MIN. FOREBAY. BASE, 3:1 BASE DITCH All jh
X-1 0.25'
D-02) SCALE: N.T.S
STAPLE EACH STRIP EVERY 3' AROUND
THE EDGES AND DOWN THE CENTER.
OVERLAP ADJACENT STRIPS 3" AND
STAPLE.
JOIN ENDS OF STRIPS BY OVERLAPPING
12" AND STAPLING EVERY FOOT
THROUGH BOTH LAYERS. ANCHOR UPPER
END OF EACH STRIP IN 6" TRENCH.
NOTES:
1. INSTALL TEMPORAR"" STRAW MATTING ALONG PROPOSED
2:1 & 3:1 FILL SLOPES TO PROMOTE VEGETATION/SLOPE STABILIZATION.
2. SLOPE STABILITY A�x�D MATTING SHALL BE REGULARLY MONITORED,
ESPECIALLY AFTER TRAIN EVENTS. ADDITIONAL MATTING SHALL BE
INSTALLED TO REPLACE DAMAGED OR MISSING MATTING MATERIAL
UNTIL VEGETATION HAS BEEN PROPERLY ESTABLISHED AND SITE IS ACCEPTED.
4 TEMPORARY LINER/MATTING
D-02-) SCALE: N.T.S.
t
WEIR TO BYPASS DITCH
FLOW = 21.36-3.02 =18.34 CFS
FLOW DEPTH = 1.23'
WEIR LENGTH = 5'
ELEV. "A"
12"
ELEV. "A" 12"
1.25'
5: DO
7
0
q .3. GOO
, C RM WEI;F.;V
INSTALL NCDOT CLASS 'B'
2:1 RIP-RAP OVER MIRAFI, 140N
LINER ON WEIR BACKSLOPE. bA
2:1
FOREBAY/FLOW-SPLITTER: WEIR
5 OUTLET TO BYPASS DITCH
D 02 SCALE: N.T.S.
-
.............
b,
%J111111111111 11,
CAROB ',ll
QUO
26970 •
D •
L
IiII1111111joO 06/12/12
NOT FOR CONSTRUCTION Dmn*7