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NOTE: FOR MORE INFORMATION SEE
"SOIL SURVEY OF WILSON COUNTY, NC"
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P:\08PROJ\0279\0279—CCS\—Drawings\0279L—Upper School _12-15-22.dwg
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TRc Stamp:
City Council
yRevision
Stamp:
Date
B
.
Greenfield School
Date December 2022
Scale .
Map No.
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Herringr—Sutton & Associates, P.A.
EX1St1I1 Conditions
=
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Engineers — Surveyors — Planners
Upper Classroom Addition
_
1" 100'
OS—L-0279L
& Topography
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2201 Nash Street NW, Wilson, North Carolina 27896 [phone]
Wilson Twsp., Wilson Co., NC
Sheet Number: TP-1 of 1

�CARp�
L
SILT FENCE'All /Q\
\ TEMP. DIVERSION #1
\ LINED WITH NAG S75
//
— LIMITS OF DISTURBANCE 0�
\ \/
'oe TYP. INLET
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000-0
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�\ MATERIALS NOTE:
TYP. INLET � _ an \ ._ - \
PROTECTOR
` q
1 II
II I
II �
TEMP. DIVERSION
\ LINED WITH NAG S75
�\ II
II ��
\ II
TYP. lNL T
PROTECTOR III
\
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SILT FENCE ` \\
TYP. INLET
PROTECTOR
BUILDING "M"
FFE=1 10.50
TYP. INLET
PROTECTOR
TYP. INLET
PROTECTOR
TEMP. DIVERSION
LINED WITH NAG S75
LIMITS OF DISTURBANCE ` \ \ TYP. INLET
\ PROTECTOR
�0� TEMP. FAIRCLOTH
SKIMMER
06,
\ \HORSE INLE
PROTECTOR
EDP-2
La=9'
W=7'
T=22" CLASS B STON
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TRC Stamp: I City Council Stamp:
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LIMITS OF DISTURBANCE \ \
� 20p1 FRS 2 0,\
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SITE
Not to Scale
Vicinity Map
NOTE:
ALL NON —IMPERVIOUS AREAS ARE TO
BE STABILIZED WITHIN 14 DAYS.
ALL DEMOLITION DEBRIS TO BE
DISPOSED OF IN AN APPROPRIATELY
APPROVED FACILITY OR LOCATION.
'General Site Sedimentation -Erosion Control
TYP. IN "'•= T
PROTE9TOR , ' DRAINAGEAREA INTO a Z \ (- \ \ 1. Prior to commencing any land disturbing activity whose limits of disturbance are greater than 1.0 acre in
TEMP. DIV. #1 \ \ \ \ \ area, the Contractor shall have in his possession a copy of the approve Sedimentation -Erosion Control plan
\ and notified the approving authority of his intent to commence land disturbing activities. Contractor shall
v 1.4 ACRES \ \ \ \ \ conduct a pre- land disturbance conference on -site if so required by the approving authority prior to
' \ \ commencing land disturbing activities. 0
`^ I / ♦ �� \ \ 2. All land disturbing activities shall be performed in accordance with the approved Sedimentation-Erosion
Control Plan unless prior approval is obtained from either the Project Engineer or Approving Authority_
3. The Contractor is responsible for Self- Monitoring and Self -Inspection of the land disturbing construction
' ♦ \ \ \ \ activities on the site as follows: The focus of the Self -Monitoring Program is the installation and maintenance
\ \ the erosion control and sedimentation control measures according to the approved plan. The inspections
shall be conducted after each phase of the project and continue until permanent ground cover is established
in accordance with NCGS 113A-54.1 and 15A NCAC 413.0131. The self -inspection reportform is available
I ' *40. \ \ \ \ \ as an excel spreadsheet at the following:
\ HTTPNWWW.DLR.ENR.STATE.NC.US/PAGES/SEDIMENTATION_NEW.HTML. If you have questions
c TOTAL DISTURBED ,� ♦ concerning the form or cannot access the form, please contact the Raleigh Regional Office of the
1 /I \ \ Department of Environmental Quality at 919-791A200 or the office of the approving Sedimentation -Erosion
AREA 3.3 ACRES
♦ J \ \ v Control Plan Authority_
' \ \ 4. All sites subject to approved Sedimentation -Erosion Control Plan are required to fill out inspection sheets for
ESC measures weekly and within 24 hours of rainfall events greater than 1.0 inches cumulative within the
LAYDOWNAREA < -� \ \ preceding 24 hourtime period. Inspection sheets are to be kept in on site in a water proof enclosure or on -
site construction office throughout the duration of the project. A copy of the approved Sedimentation -Erosion
Control Plan as amended should also be kept in the same location. A rain gauge shall be provided by the
\ \ 7 114 Contractor on kept on the site.
5 Silt fence is used to delineate limits of rii ztiirharnre anrt shall he installeri in-JHP limits of riisturhanre
TEMP. SKIMMER `
BASIN PER C.O. W. \ LIMITS OF DISTURBANCE I \ \ \ \ l
DETAIL 352.03
TEMP. DIVERSION #
LINED WITH NAG S75 \ \ 1 SILT FENCE
09 TEMSTOCKPILE 771 E" DRAINAGE AREA INTO �� I
TEMP. SKIMMER BASIN�\
alb 2.6 ACRES ftftft }31 \ \\
SILT FENCE '~�' T \ 3 \ ~ \ \ 1
_ _� • / 0�1 TEMP. DIVERSION # 11 \ V \ \ \ ) \
BAFFLES (3J �SILT FENCE , I \ `
F„ LINED WITH NAG S75
TEMP. CONC.
_
■ `Ol 77WASH IT \ \
_ u_ - \_ _ . �l 7 TYP. INLET
O PROTECTOR 01\ ` \
TE . STONE 13ONST.
_ 0�^ ~�" \ ` ` \ \ \ \ ��l l \ l ENPANCE2M000'
-�\ DRAINAGEAREA INTO �p� ` _ ■
TEMP. DIV. #1 �\
108 1.1 ACRES I 0 \ I — — _ _ TY . INLET \\ \
LIMITS OF DISTURBANCE PR Ofi CTOR
1 SIL T FENCE �� 70 \
\ \
70�/ -\
8 \
�`\ SILT FENCE
OUTET (TYP.) \
10
10
\< \7 �Q `\` `\ ✓L� \10 Nr \
7 K\ >
1 110 \�\- \\\\ TYP. INLET \ \
PROTECTOR
61
TEMPORARY SKIMMER SEDIMENT BASIN SCHEDULE
STRUCTURE
TOP OF
LENGTH 0
WIDTH 0
INVERT
SKIMMER
ORIFICE
SKIMMER
EMERGENCY
EMERGENCY
DRAWDOWN
#
BERM
(SPILLWAY
(SPILLWAY
OF
SIZE
DIA (IN)
INVERT
SPILLWAY
SPILLWAY
TIME
INVERT)
INVERT)
BASIN
WIDTH
INVERT
(FT)
(FT)
(FT)
(FT)
(IN)
(IN)
(FT)
(FT)
(FT)
(DAYS)
108.0'
SURFACE
SURFACE
104.0'
2"
1.5"
104.0'
8'
107.0'
2.3
1
2888 SF
2888 SF
Herring —Sutton & Associates, P.A.
Engineers — Surveyors — Planners
2201 Nash Street NW, Wilson, North Carolina 27896 [phone]
Greenfield School
Upper Classroom Addition
Wilson Twsp., Wilson Co., NC
SYMBOLS LEGEND
PROPOSED TEMPORARY CONSTRUCTION ENTRANCE
PROPOSED STOCKPILE
PROPOSED TEMPORARY SKIMMER
BASIN #1 W/ BAFFLES
PROPOSED FAIRCLOTH SKIMMER
® PROPOSED CONCRETE WASH PIT
PROPOSED RIP RAP ENERGY DISSIPATION PAD
PROPOSED RIP -RAP STONE ® EMERG/ SPILLWAY
SITE BOUNDARY / PROPERTY LINE
PROPOSED SEDIMENT FENCE
PROPOSED SEDIMENT FENCE OUTLET OUTLETS
— — — — -
PROPOSED LIMITS OF DISTURBANCE
PROPOSED DRAINAGE AREA TO TEMP. SKIMMER BASIN
150
PROPOSED CONTOUR LINE
__+ TD __+ TD —
PROPOSED TEMPORARY DIVERSION LINED WITH NAG S75
■ ■ ■ ■ ■ ■ ■ ■ ■ ■
PROPOSED DRAINAGE AREA TO SEDIMENT FENCE
PROPOSED HORSESHOE INLET PROTECTOR
30 0 30 60 90
P: \08PROJ\0279\0279-CCS\_Drawings\0279L-Upper School_12-15-22.dwg
Date December 2022
Sedimentation & Scale : Map No.
i" = 30' 08—L-0279L
Erosion Control Plan
Sheet Number: EC-1 of 7

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or
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0,00�' ° oe TYP. INLET '
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SYMBOLS LEGEND
PROPOSED TEMPORARY CONSTRUCTION ENTRANCE
PROPOSED STOCKPILE
PROPOSED TEMPORARY SKIMMER
BASIN #1 W/ BAFFLES
PROPOSED FAIRCLOTH SKIMMER
® PROPOSED CONCRETE WASH PIT
MOO PROPOSED RIP RAP ENERGY DISSIPATION PAD
PROPOSED RIP —RAP STONE ® EMERG/ SPILLWAY
SITE BOUNDARY / PROPERTY LINE
PROPOSED SEDIMENT FENCE
PROPOSED SEDIMENT FENCE OUTLET OUTLETS
— — — — — PROPOSED LIMITS OF DISTURBANCE
PROPOSED DRAINAGE AREA TO TEMP. SKIMMER BASIN
150 PROPOSED CONTOUR LINE
__+ TD __+ TD — PROPOSED TEMPORARY DIVERSION LINED WITH NAG S75
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ PROPOSED DRAINAGE AREA TO SEDIMENT FENCE
PROPOSED HORSESHOE INLET PROTECTOR
30
0 30 60 90
P: \08PROJ\0279\0279—CCS\_Drawings\0279L—Upper School_12-15-22.dwg
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CA '�
��`�Herring—SuttonGreenfield
TRC Stamp:
P�
City Council Stamp:
y P�
Revision
Date
B
•
School
Date December 2022
Scale
Map No.
���°•=
& Associates, P.A.
10180
Engineers — Surveyors —
Planners
Upper Classroom Addition
Sedimentation
&
i" = 30'
08—L-0279L
;A,
Erosion Control
Plan
....... •sJ,.�`'�
2201 Nash Street NW, Wilson, North Carolina
27896 [phone]
Wilson Twsp., Wilson Co., NC
Sheet Number: EC-2 of 7

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P: \08PROJ\0279\0279—CCS\—Drawings\0279L—Upper School-12-15-22.dwg
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` CA '
TRC Stamp:
P
City Council Stamp:
y P
Revision
Date
B
HerringGreenfield
—Sutton & Associates, P•A•
•
School
Sedimentation &
Date December 2022
Scale
Map No.
..
Upper Classroom Addition
Erosion Control
1" = 30'
08—L-0279L
10180
Engineers — Surveyors — Planners
Sheet Number: EC-3 of 7
AQ
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2201 Nash Street NW, Wilson, North Carolina 27896 [phone]llw�on
Twsp., ilw�on Co•, NC
Drainage Areas

ENTRANCE POINT CA
SEE NOTE 3
ALLOW SUFFICIENT RADIUS
TO ENSURE TRUCK WHEELS
STAY ON THE STONE
Opp _
100 LF MIN_ OR
LONGER ALONG C/L
yo �� FROM ENTRANCE
POINT (BUT
SUFFICIENT To KEEP
4� SEDIMENT ON SITE)
25'
OR WIDTH OF
STANDARD ENTRANCE
PROPOSED STREET,
SEE NOTE 2 MICHEVER IS GREATER
TO PREVENT SHORT CIRCUITING ENTRANCE, EITHER
INSTALL FENCE (SILT FENCE / TREE PROTECTION)
OR CREATE FREE BARRIER ENTRANCE ON BOTH
SIDES AS APPLICABLE.
100 LF MIN.
EXISTING ROADWAY 85 LF MIN, 15' MIN, z
s" MIN.
2% SLOPE (SEE NOTE Z) •_.
ry
PLACE FABRIC _ 2"-3" STONE TO BE USED (SURGE PILE
UNDER STONE SECTION A -A STONE OR RAILROAD 13ALLAST RECOMMENDED)
IF CANNOT MAINTAIN CONSTRUCTION
ENTRANCE WASH STONE WILL BE REQUIRED.
CONSTRUCTION
1. Clear the entrance/exit area of all vegetation, roots, and other objectionable material.
2. Grade the road Foundation so that the entrance/ exit will have a cross slope.
3- Stone size - Use 2" to 3" stone or surge pile stone-
4. Maintain the gravel pad in a condition to prevent mud or sediment from leaving the site onto the public
right-of-way. This may require periodic top dressing with additional stone as conditions demand repair and/or
cleanout of any measures used to trap sediment. Should mud be tracked or washed ant° road, it must be
removed immediately.
5. If construction on the site is such that the mud is not removed by the vehicle traveling over the stone, then the
tires of the vehicle must be washed before entering the existing roadway. When necessary, wheels shall he
cleaned to remove sediment prior to entrance onto public light -of -way. When washing is required, it shall be
done on an area stabilized with crush stone which drains to an approved sediment trap or sediment basin. All
sediment shall be prevented from entering any storm drain, ditch, or watercourse through use of sand bags,
gravel, boards, or other approved methods.
6. install silt Fence or tree proleGtion fence to ensure construction entrance is used.
. F *,f
pasp
Pub lc Services Departments Vaim [phone]
CITY of WILSON, N.C.
`till �
ISM Herring Avenue, i P.O Box 1U FAX [phone]d53
wlson, Ndrih Cerollrla 27894 USE WITH 71-IE CITY OF WILSON STANDARD SPECIFICAT,ONSONLY w.wu.wilsonnc•org
CONSTRUCTION
TABILIZED s1
SCALF
N,T.Scale
z366`0
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ENTRANCE DETAIL
REVIMNQ TE
SHEI=fp:
July 12[Y19
1 of 3
Details Provided by APPIAN Consulting Engineers - www.uppionengincers.com 06 07 2010 - 3:20:49 P
A
BURY THE TOP END OF THE
MATTING STRIPS IN A TRENCH
6 INCHES OR MORE IN DEPTH.
7)12 CAL STAPLES
#13 GUAGE WIRE �L 1WG
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PRESS ENDS 5
INCHES INTO THE SOIL
AROUND STRUCTURES AND d�
STAPLE SECURELY
WHEN USING NETTING IN CHANNELS, ROLL
OUT STRIPS OF NETTING PARALLEL TO THE
DIRECTION OF FLOW AND OVER THE
PROTECTIVE MULCH.
n nw
A
5s
TAMP THE TRENCH FULL OF SOIL.
SECURE WITH ROW OF STAPLES,
1 ❑ INCH SPACING, 4 INCHES DOWN
FROM THE TRENCH.
J
�A_L
C. OVERLAP
BURY UPPER END OF LOWER
STRIP AS IN "A" AND V.
OVERLAP END OF TOP STRIP 18
INCHES AND STAPLE.
D. EROSION STOP
FOLD OF MATTING BURIED IN
SLIT TRENCH AND TAMPED
DOUBLE ROW OF STAPLES-�
C F wt( Public Services Departments Vol- [252) 3M,24
`�S S 1800 Herring Avenue, l P.O. Box 10 CITY 0 ■ ■ FAX [phone] M
Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY www.vAisonnc.org
STABILIZING NoSCALE:
T S ale 235s 01
CHANNELS REVISION DATE: BHE
RYH G / June, 2010 1 of
Z
❑etc's Provided by APPIAN Consulting Engineers - www,cpplarengineers, com 06/07/2070 - 3:17:41 PM
PARABOLIC CROSS-SECTION
- -- - z1 MIN- 0.5 FREEBOARD
COMPACTED SOIL
TRAPEZOIDAL CROSS-SECTION
- - MIN. 0.5 FREEBOARD
- - _
zz-
I Elf-
* 3:1 iI= TO BE MOWED -1I-
`-.8.-tea 2' MIN.
=1Ir li II_,,,l� IIIIiI�
A' TYPICAL
CONSTRUCTION SPECIFICATIIONS.
1. All trees, brush, stumps, obstructions, and other objectionable material shall be
removed and disposed of so as not to interfere with the proper functioning of
the diversion.
2. The diversion shall be excavated or shaped to line, grade, and cross section as
required to meet the criteria specified herein, and be free of irregularities
which will impede normal flow,
3. Fills shall be compacted as needed to prevent unequal settlement that would
cause damage in the completed diversion.
4. All earth removed and not needed in construction shall be spread or disposed of
so that it will not interfere with the functioning of the diversion.
5. Stabilization shall be done according to the seeding and ground cover
Specifications. Where design velocities exceed 2 fps, a channel liner is necessary
on new diversions to prevent erosion. The maximum permitted channel velocities
for unprotected soils in existing channels shall not exceed those prescribed in
Table 8.05d of the North Carolina Erosion and Sediment Planning and Design
Manual unless a temporary, permanent grassed, or armored lining is provided
based upon the permitted vegetated velocities (Table 8.05a) or tractive force for
temporary or permanent lining - (Table 8.05g), as applicable, The Engineer
shall determine the diversion ditch flow and velocities, assign a corresponding
lining, and annotate on his/her plans.
NOTES:
1. May be used to divert water away from the site, prevent excess runoff from
concentrating over large areas of the site, prevent surface water runoff over steep
slopes, or divert stormwater to sediment basins or slope drains.
Public SerVicartments Voice [phone]
IWO Herring Avenue. I P.O. Box 10 CITY of WILSON,, N.C. FAx [phone]
Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY mvw.wnisonnc.org
DIVERSION CONSTRUCTION SALE: DETAIL#
2 Nat To Scale 53•06
�Hr
SPECIFICATIONS DETAIL RJutne-201D i" i
Details Provided by APPIAN Consulting Engineers - www.appionengincers.com 06/07/2010 - 3:39:52 PM
NOTES:
1. Apply lime, fertilizer and seed before laying the net or mat.
2. Start laying the net from the top of the channel or slope and unroll it down the
grade. Allow netting to lay loosely on the soil but without wrinkles - do not
stretch. Mat or blanket - type product should provide at least 30% coverage of
the surface where it is applied.
3. To secure the net, bury the upslope end in a slot or trench no less than 6
inches deep, cover with soil, and tamp firmly as shown. Staple the net every 12
inches across the top and and every 3 foot around the edges and bottom. Where
2 strips of net are layed side by side, the adjacent edges should be overlapped
3 inches and stapled together. Each strip of netting should also be stapled down
the center, every 3 foot. Do not stretch the net when applying staples.
4. To join two strips, cut a trench and anchor the end to the new net. Overlap the
end of the previous roll 18 inches, as shown, and staple every 12 inches just
below the anchor slot.
5. Maintenance: Inspect all mulches periodically, after rainstorms to check for rill
erosion, dislocation, or failure. When erosion is observed, apply additional mulch.
If washout occurs, repair the slope grade, reseed, and reinstall mulch. Continue
inspections until vegetation is firmly established.
1800 HesmAvenue, / P.a. Box 1D FA]C 399 2433
P CITY of WILSON N.C. {�'3
�■ 1 Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY wwM1V�sonnc.org
Q} STABILIZING SCALE: DETAIL#
No r ?'' t To Scale z 353.01
u■r6& CHANNELS REVISION DATE: SHEETt
June, 2010 2 of Z
City Council Stamp: RO` TRC Stamp: y p Revision Date By
e
•' = Herring -Sutton & Associates P.A.
L
loiso Engineers - Surveyors - Planners
-,,F • L: • •sJ,,�,. 2201 Nash Street NW, Wilson, North Carolina 27896 [phone]
''rrrr•`
Details Provided by APPIAN Consulting Engineers - www.uppianengincers.com 06/07/2010 - 3:14:10 PM
0.111
0
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"WIRE
IS REQUIRED i -
V
STANDARD STRENGTH
FENCING. SEE NOTE 5.
i
dd
15' 1
SELF -FASTENING STEEL
POSTS . -EQUIVALENT.DRIVE
POSTS ' " INTO GROUND.
■
SEE NTE 2.
90' TYPICAL
110' MAX.
DRIVE STEEL POSTS
I ' 'IIII MIN, 24" (EXTRA DEPTH
I I REQUIRED FOR UNSTABLE
k i SOILS)
J
Public ServicesenuDepartments
CITY of WILSON, N.C. F► '
`�S� , �►5 �sp''t 1800 Herring Avenua,l P.O.P.a. Box 10399-2453
Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY wwhY.Jsonnc.org
d SCALE: DETAIL#
:& TYPICAL Not To Scale 2351.01
r,.
�`a3,hc REVISION SILT FENCE ,o
Details Provided by APPIAN Consulting Engineers - www.appionengincers.com 06/07/2010 - 3:23:39 PM
- TRENCH -
UPSTREAM END
OF STORM DRAIN
L- - - - - - - - -J-3/4" EXTERIOR PLYWOOD
BURY BOTTOM OF PLYWOOD
UPSTREAM END
OF STORM DRAIN
OVERFLOiN
1/3 PIPE DIA.
3/4- EXTERIOR
PLYwnf)n
z
OPTION A
00
ILLUSTRATION OF PLYWOOD INLET PROTECTION
FOR STORM DRAIN UNDER CONSTRUCTION.
NOT TO SCALE REV. 9-1-92
STEEL FENCE POST
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erkmis Departments
:;r =
PIPE INTLET
Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIWATIONS ONLY sonnc.org
PROTECTION
.r r
Greenfield School
Upper Classroom Addition
Wilson Twsp., Wilson Co., NC
Details Provided by APPIAN Consulting Engineers - www.uppionengincers.cam 06/07/2010 - 3:13:59 PM
NOTES:
1. Toe in backfill into trench and compact the soil firmly to anchor the bottom
of the silt fence so that the runoff is forced to go through the fence. No
runoff is to flow under the fence.
2. Posts for sediment fences are to be 1.33 lb/LF steel with a minimum length
of 5 ft. Make sure that steel posts have projections to facilitate fastening
the fabric. Filter fabric ma be attached usin wire or lastic zi ties that
Y 9 P P
have a minimum 50 lb tensile strength.
3. Total drainage area flowing to silt fence may not exceed 1/4 acre per 100 Ft.
of fence.
4. Silt fences should not be used at pipe outlets or in areas of concentrated flow
(creeks, ditchlines, swales etc.)
5. Construct the silt fence sediment barrier with either Standard Strength or Extra
Strength synthetic filter fabrics. If Standard Strength fabric (TerraTex SF 90
or equiv.) is used, wire mesh support IS required. If Extra Strength fabric
(Mirafi 100X or TerraTex SFD or equiv.) is used, NO support is required.
6. Standard Strength fabric (TerraTex SF 90 or equiv.) with 8 ft max post
spacing DOES require support by wire mesh fastened securely to the upslope
side of the posts. Use wire fence with a minimum 14 gauge and a maximum
mesh spacing of 6 inches. Extend the wire mesh support to the bottom of
the trench. Fasten wire reinforcement, then fabric on the upslope side of the
fence post using wire or plastic zip ties that have a minimum 50 lb tensile
strength.
7. Extra Strength Filter Fabric (Mirafi 10OX or TerraTex SFD or equiv.) with 6 ft
max. post spacing DOES NOT require wire mesh support. Securely fasten
filter fabric directly to posts. Wire or plastic zip ties that have a minimum 50
lb tensile strength.
O f� Public Services Departments �N.C. Vdce i252) 399,2485
1 SM Henri
Nor�glACvenue, /Z�Box 10 CITY
of WILSON,
E W■ i ITH ECITY FWILSON STANDARD F1CATfrN . ■ F WWW 1 1399 2453
TYPICAL SCALE: DETAIL#
�Not To Scala x 351.01
REVISION DATE: SHEET;R
SILT FENCE June, 2010 2 of 2
Details ProvIded by APPIAil . . Engineers - www.uppionengincers.com06/07/2010
•■
WIRE FENCE IS REQUIRED
POSTS OR
HARDWARE .EQUIVALENT.
ON
■
FLOW
Z>
SILT FENCE FABRIC TO OVERLAP-
HARDWAREr L
ISOMETRIC
1
STONE FILTER OF 1 INCH
DIA. oo
M SIDE VIEW
1
■ 0■t
1
l
DRIVE STEEL POSTS
1
■
DEPTH REQUIRED
'
ry
ON
FOR UNSTABLE
L
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STONE FILTER OF 1 INCH DIA.
NCDOT #57 WASHED STONE
SEE SIDE VIEW
�1
7, 1
ISOMETRIC VIEW
NOTES: f r
1. Toe in backfill into trench and compact i.
the soil firmly to anchor the bottom of the
hardware cloth & overlapping silt fence so that
the runoff is forced to go through the fence.
No runoff is to flow under the fence or the relief point. SEE NOTE 1
2. Use silt fence outlets only when drainage area does not exceed 1/4 acre and
there is a low area. Use as a repair of silt fence failures.
3. Posts for sediment fences are to be 1.33 lb/LF steel with a minimum length
of 5 ft. Make sure that steel posts have projections to facilitate fastening
the fabric. Filter fabric may be attached using wire or plastic zip ties that
have a minimum 50 lb tensile strength.
4. See detail 351.01 for Silt Fence construction standards.
aSm gADepartments
ISM Hei Avenue, P.O. Box 10 , N.C. FAX �} 399-2453
CITY of WILSON
Wilson, North Carolina 27W USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY wwM1Y�sonnc.org
SCALE: DETAIL#
SILT FENCE OUTLET Not To Scale 2351.02
REVISION DATE: SHEETt
�A RELIEF POINT
June, 2010 1 of 1
P:\08PROJ\0279\0279-CCS\-Drawings\0279L-Upper School EC Details-12-15-22Awg
Date: December 2022
Sedimentation & Scale: None
Map No.
Erosion Control Details Drawn by: VLK 08-L-0279L
Sheet No. EC-3 of 6

LI`IJ Gam] W d LN Q Lnl L5
� L� LJ � Lli! Q !! V a � Ln1 Gz1 V L5 L,
STANDARD 5 METAL POSTS
2'-0" IN GROUND SEE NOTE2
19 GA_ HARDWARE CLOTH
4' APART MAX.
WITH 1/4" MESH OPENINGS
SEE NOTE 2
SEE NOTE 3
_
FILTERED WATER
I
: rRfc
e
`
rLL
000
�
_
7TA*A
?+fit
-li
HARDWARE CLOTH
GROUND, AND STONE CUT AWAY
T� .k
'
a
FROM VIEW TO SHOW DETAIL
a
_I
r11 N W
U)
STANDARD 5' METAL POSTS
2'-0" IN GROUND SEE NOTE 2
OVERFLOW
#5 OR #57 WASHED STONE
PLACED TO A HEIGHT OF 16"
- o
ABOVE TOP OF BOX
,.
L,M
........... r rrf
RUNOFF
iLU
LU
WATER WITH
SEDIMENT I-1F.
SEDIMENT 1� �I I I� =
' I -III I
�
DROP INLET WITH
GRATELN
■ ■
'I l
SEE NOTE 1
SEE SHEET 2 OF 2 FOR NOTES
OF
PubliIBM Services Avenue,
1800 Herring Avenue, i P.O. Box 70
i P.O-
C I'i" y of W I L S O N N.C.FAXVoice [phone]
FAX 39�2453
Wilson, Norlh Carolina 27894
� (252)
USE WITH THE CITV OF WILSON STANDARD SPECIFICATONSONLY www.wilsonnc.org
INLET PROTECTION DETAILS
Not To Scale
DiEtAIL#
1.362.06
=1SCALE.
IEL
T
(OPTION A)J
2019E
1"of 2
Ip
moo. PLAN VIEW
� r�O� y (ABOVE GRADE)
4S
mac$
STAPLES, (2) PER BALE
' � I
'
I
k
WOOD OR METAL
STAKES (2 PER
BALE)
10 MIL. PLASTIC LINING
(SHOWN WITH CUT AWAY FOR CLARITY)
NATIVE MATERIAL (OPTIONAL)
STRAW
5'-0' MIN. (10' MIN. TOTAL) BALES
I
STAPLES, (2) PER BALE -
BINDING WIRE
ip MIL, PLASTIC LINING
-_ 3-r
F--7=11f=1
I 17. a 1-III "
WOOD OR METAL SECTION C-C
STAKES (2 PER BALE)
(1/2 SECTION)
OPTION #1
ELEVATED PIT WITH STRAW BALE DETENTION WALLS
NOT TO SCALE
NOTES:
1. Actual Icyouf to be determined in field.
2. The "concrete washout" sign shall be installed within 30 ft of the temporary
concrete washout facility.
3. Pit capacity is minimum of 6 cu ft per 10 cu yd of concrete.
4. Contractor to coordinate with usage contracting Officer for proper disposal of
concrete.
O F W�tsO
Pub goServices aepartments Voice 252 399-2465
Herring P.O Box CITY of W I L S O N N.C.
�t
1SW Avenue, i 10 , FAX (252) SW2453
- vVwUV.wl annc.a P N Wilson North Carolina 27894 USC'JY TH T HE OF WI ANDA ❑S ECIFILAT:ONSONLY 9
I H I ST R
z'
CONCRETE WASHOUT
SCALE
Not To Scale
.3619.01
1145 J
T
PIT DETAILS (Option #1)
REVISION DATE
SHEET#
July, 2019
1 of 4
1=
IM%In
TRC Stamp: l City Council Stamp:
NOTES:
1. This method of inlet protection is applicable where flows are fight to moderate.
Construction Specifications
1. Uniformly grade a shallow depression approaching the inlet.
2. Drive 5-font steel T posts (1.25 IbILF) 2 ft into ground surrounding the inlet, 4 ft apart max.
1 1
3. 5 a d s ee! pasts l a es a e c of 9- au a rd e cloth 1 es urr un t t w th wtr m h hardw r l h 1 ha war I h w/ m h
P � 9 9
openings). Secure the wire mesh to steel posts at the top, middle and bottom. Placing a 2-ft flap of
the wire mesh under the gravel for anchoring is recommended_ Total height of wire mesh to be 2 ft
min.
4. Place clean gravel (NCDOT #5 or#57 stoney on a 2:1 slope with a height of 16 inches around the
wire, and smooth to an even grade.
5. Once the contributing drainage area has been stabilized, remove accumulated sedimenl and
establish final grading elevations.
6. Compact area properly and stabilize with groundcover.
Maintenance
Inspect inlets at least weekly and after each significant (112" or greater) rainfall. Clear mesh wire of
any debris or other objects to provide adequate flow for subsequent rains. Take care not to
damage or undercut the wire mesh during sediment removal. Replace stone as needed.
Remove sediment as necessary to provide adequate storage volume for subsequent rains.
When the contributing drainage area has been adequately stabilized, remove all materials and any
unstable soil, and either salvage or dispose of it properly. Bring the disturbed area to proper grade,
then smooth and compact it. Appropriately stabilize all bare areas around the inlet.
of 1Pts0.
1PSM Herring Avc Serviceseenue, i P.O. Box 10 CITY of W I L S o N , N.C. dments FAX [phone]
4Ylson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD EPECIFILATIONSONLY w,we.wilsonnc.org
Ir z'
INLET PROTECTION DETAILS
NSCALP le
s36 a6
I"a5
(OPTION A)
REVISIIIONDA E
2" EFT z
VELCRO TOP TO SIDE FASTENERS
I
REVERSIBLE WASHOUT PLACARD
I (ON OPPOSITE SIDE)
l
HINGED & DOMED
RAIN FLY
PRODUCT VIEW
(ABOVE GRADE)
TENT POLES
1
,\
OUTBACK ALL-WEATHER WASHOUT
45"L K 45"W x IG"H OR
' " H x 12"H
ASNEEDED
POLYETHYLENE
SEWN IN LINER I 1
BAG r
VELCRO TOP
TO SIDE
L� FASTENERS
� � / FAERS
•�
� �
LIFTING STRAPS
D STAKE DOWN
LOOPS
POLYPROPYLENE EXTERIOR
BAG W/ COROPLAST
WALLS SEWN INSIDE
OPTION #2
WASHOUT CONTAINMENT BAG OR EQUAL
NOT TO SCALE
NOTES:
1. Washout shall be installed prior to using materials that require washout on
the project. Install on a level surface area.
2. The "concrete washout" sign shall be installed within 30 ft of the temporary
concrete washout facility.
3. Washout to be replaced as necessary to maintain capacity for liquid waste.
4. Do not washout into storm drains, open ditches, sfreefs or streams.
5. Locate per plans. Locate at least 50' from a storm drain, open ditches, or
water bodies.
a. Washout shall be used for non -hazardous wastes.
9. Let washout set or evaporate before lifting. 0o not move when wet.
0 F wj.
1 SW Herring Aveenue, P.O Box 10 CITY of W I L S o N N.C. FAX 3W2453
oS 4
i , (252)
4Ylsbn, North Carolina 27894 USEVWT , ItE CITY OF WILSON STANDARD SPECIFILATIONSONLV www.wllsonnc.org
CONCRETE WASHOUT
SCALE
Mot To Scale
DETAILII
s 359.D1
�rETs p� J
PIT DETAILS (Option #2)
RE
EJulY
4
2019E
2"ofT
Herring -Sutton & Associates, P.A.
Engineers - Surveyors - Planners
2201 Nash Street NW, Wilson, North Carolina 27896 [phone]
DEAD TREES AND
SCRUB OR UNDER
GROWFH SHALL BE
CUT FLUSH WITH
ADJACENT GRADE.
NO GRUBBING
ALLOWED UNDER
DRIP LINE.
7=�= 12
ao XGr ■RTa
12
PLANT CANOPY
DRIP LINE 5-FT (TYP)
5' MIN.
2'x4' WOOD POSTS
HOOD RAILS
EXISTING
PLANT
LIMIT OF
CANOPY,
DRIPLINE
PLAN VIEW OF PROTECTIVE FENCING
- 1"xe HORIZ. AROUND SINGLE TREE- EXPAND AS NECESSARY
WOOD RAILS
�Ita9lll�i�1�C7����f� I �
11=IE=Ir=11=11=1=II={I+
MIN. 10 GA.
LINE WIRES
GRADE
8' MAX. !
VARIABLE AS DIRECTED
BY THE ENGINEER
NOTSCYWK MA
D7 MT Wnu
I WARNING SIGN
ORANGE, UV RESISTANT,
HIGH -TENSILE STRENGTH.
POLY BARRICADE FABRIC
(TYPICAL)
PERFORATED PLASTIC FENCE DETAIL
40"
r TREE PRdCEC'I'IDN AREA
e�
DO NOT ENTER
PLANT CANOPY
DRIP LINE
18"
6' STEEL T POST
(FACTORY PAINTED)
MIN 12-1/2 [ORANGE, UV RESISTANT,
GA. WIRES HIGH -TENSILE STRENGTH,
POLY BARRICADE FABRIC
(TYPICAL)
EXISTI NG
PLANT
LIMIT OF
CANOPY,
DRIPLNE
PLAN VIEW OF PROTECTIVE FENCING
AROUND SINGLE TREE- EXPAND AS NECESSARY
NOTES:REMOVE ALL BARRIERS UPON COMPLETION OF PROJECT.
2. LANDSCAPING PLANS SHALL SHOW LOCATIONS OF ALL TREE PROTECTION FENCES,
3. ALL PLANTS TO BE SAVED SHALL BE PROTECTED BY FENCING AS SHOWN IN THIS DETAIL.
4. CONTRACTOR SHALL INSTALL FENCING PRIOR TO BEGINNING ANY CONSTRUCTION OR GRADING ACTIVITY.
5. CONTRACTOR SHALL CALL FOR INSPECTION AND APPROVAL OF PROTECTIVE
REVISIONS FENCING PRIOR TO BEGINNING ANY CONSTRUCTION OR GRADING.
DESCRIPTION 5. PROTECTIVE FENCING SHALL BE LOCATED 5' OUTSIDE DRIPLINE OF TREES AND
1' MINIMUM OUTSIDE SHRUBS OR OTHER PLANTS.
STD. NO.
TREE PROTECTION FENCING
rrl _l il, Fr„i,J:1 i:�PIAN Cam...
PLAN VIEW
(BELOW GRADE)
.s-
be
10 MIL. PLASTIC
LINING
ANCHOR PLASTIC
LINER WITH #57
10'-0" (30'-0' TOTAL) STONE
I (6'-O" TOTAL BOTTOM) 2'-o" 1'-O" 2'-0" 2'-D"
6" 1'-0" 6"
0.5 8.5
F �,
I 2
MIL
PLASTIC ' IJ I
LINING I �-III-I ANCHOR"I
I=
-I
-I I I� I I7 IF PLASTIC LINER I I- i
WITH y57 STONE
SECTION A -A
(1 /2 SECTION)
OPTION #3
EXCAVATED PIT WITH STONE SUPPORT
NOT To SCALE
NOTES:
1. Actucl layout to be determined in field.
2, The "concrete washout" sign shall be installed within 30 ft of the temporary
concrete washout facility.
3. Pit capacity is minimum of 6 cu ft per 10 cu yd of concrete.
4. Contractor to coordinate with usage contracting officer for proper disposal of
concrete.
F
0'�� s4�
Pub licServieesOepartmenls Voice 252 99.2465
SW P.O Box CITY Q WILSON, N.C.
LtiS
1 Herring Avenue, i 10 FAX (252) 3W2453
4
1"
4Ylsbn, North Carolina 27894 USE'Al TH THE CITY OF WILSON 5`T ANGA RD SPECIFIC.AT-ONS ONLV wwW4vv lsonnc.olg
CONCRETE WASHOUT
Not To Scale
2359.01
TE45
T
PIT DETAILS (Option #3)
REJ
2019E
3"df 4
ly,
Greenfield School
Upper Classroom Addition
Wilson Twsp., Wilson Co., NC
ENERGY DISSIPATION PAD
DESIGN PROCEDURES FOR RIPRAP OUTLET STRUCTURES ARE PRESENTED IN
APPENDIX 8.06.
CAPACITY--10 YR. PEAK RUNOFF OR THE DESIGN DISCHARGE OF THE
WATER CONVEYANCE STRUCTURE, WHICHEVER IS GREATER.
TAILWATER DEPTH-- DETERMINE THE DEPTH OF TAILWATER IMMEDIATELY
BELOW THE PIPE OUTLET BASED ON THE DESIGN DISCHARGE PLUS OTHER
CONTRIBUTING FLOWS. IF THE TAILWATER DEPTH IS LESS THAN HALF THE
DIAMETER OF THE OUTLET PIPE AND THE RECEIVING STREAM IS
SUFFICIENTLY MADE TO ACCEPT THE DIVERGENCE OF FLOW, IT IS CLASSED
AS A MINIMUM TAILWATER CONDITION. IF THE TAILWATER DEPTH IS GREATER
THAN HALF THE PIPE DIAMETER, IT IS CLASSED AS A MAXIMUM TAILWATER
CONDITION. PIPES THAT OUTLET ONTO BROAD FLAT AREAS WITH NO DEFINED
CHANNEL MAY BE ASSUMED TO HAVE A MINIMUM TAILWATER CONDITION
UNLESS SITE CONDITIONS INDICATE OTHERWISE.
APRON SIZE-- THE APRON LENGTH AND WIDTH CAN BE DETERMINED
ACCORDING TO THE TAILWATER CONDITION. IF THE WATER CONVEYANCE
STRUCTURE DISCHARGES DIRECTLY INTO A WELL-DEFINED CHANNEL, EXTEND
THE APRON ACROSS THE CHANNEL BOTTOM AND UP THE CHANNEL BANKS
TO AN ELEVATION OF 0.5 FT. ABOVE THE MAXIMUM TAILWATER DEPTH OR
TO THE TOP OF THE BANK, WHICHEVER IS LESS (FIGURE 6.41C).
THICKNESS-- MAKE THE MINIMUM THICKNESS OF RIPRAP 1.5 TIMES THE
MAXIMUM STONE DIAMETER.
STONE QUALITY-- SELECT STONE FOR RIPRAP FROM FIELD STONE OR
QUARRY STONE. THE STONE SHOULD BE HARD, ANGULAR, AND HIGHLY
WEATHER -RESISTANT. THE SPECIFIC GRAVITY OF THE INDIVIDUAL STONES
SHOULD BE AT LEAST 2.5.
FILTER --INSTALL A FILTER TO PREVENT SOIL MOVEMENT THROUGH THE
OPENINGS IN THE RIPRAP. THE FILTER SHOULD CONSIST OF A GRADED
GRAVEL LAYER OR A SYNTHETIC FILTER CLOTH. DESIGN FILTER BLANKETS
BY THE METHOD DESCRIBED IN PRACTICE 6.15, RIPRAP.
CONSTRUCTION SPECIFICATIONS
1. ENSURE THAT THE SUBGRADE FOR THE FILTER AND RIPRAP FOLLOWS THE
REQUIRED LINES AND GRADES SHOWN IN THE PLAN. COMPACT ANY FILL
REQUIRED IN THE SUBGRADE TO THE DENSITY OF THE SURROUNDING
UNDISTURBED MATERIAL LOW AREAS IN THE SUBGRADE ON UNDISTURBED
SOIL MAY ALSO BE FILLED BY INCREASING THE RIPRAP THICKNESS.
2. THE RIPRAP AND GRAVEL FILTER MUST CONFORM TO THE SPECIFIED
GRADING LIMITS SHOWN ON THE PLANS.
3, FILTER CLOTH, WHEN USED, MUST MEET DESIGN REQUIREMENTS AND BE
PROPERLY PROTECTED FROM PUNCHING OR TEARING DURING INSTALLATION.
REPAIR ANY DAMAGE BY REMOVING THE RIPRAP AND PLACING ANOTHER
PIECE OF FILTER CLOTH OVER THE DAMAGED AREA. ALL CONNECTING JOINTS
SHOULD OVERLAP A MINIMUM OF 1 FT. IF THE DAMAGE IS EXTENSIVE,
REPLACE THE ENTIRE FILTER CLOTH.
4. RIPRAP MAY BE PLACED BY EQUIPMENT, BUT TAKE CARE TO AVOID
DAMAGING THE FILTER.
5. THE MINIMUM THICKNESS OF THE RIPRAP SHOULD BE 1.5 TIMES THE
MAXIMUM STONE DIAMETER.
6. RIPRAP MAY BE FIELD STONE OR ROUGH QUARRY STONE. IT SHOULD BE
HARD, ANGULAR, HIGHLY -WEATHER -RESISTANT AND WELL GRADED.
7. CONSTRUCT THE APRON ON ZERO GRADE MATH NO OVERFALL AT THE
END. MAKE THE TOP OF THE RIPRAP AT THE DOWNSTREAM END LEVEL WITH
THE RECEIVING AREA OR SLIGHTLY BELOW IT.
8. ENSURE THAT THE APRON IS PROPERLY ALIGNED MATH THE RECEIVING
STREAM AND PREFERABLY STRAIGHT THROUGHOUT ITS LENGTH. IF A CURVE
IS NEEDED TO FIT SITE CONDITIONS, PLACE IT IN THE UPPER SECTION OF
THE APRON.
9. IMMEDIATELY AFTER CONSTRUCTION, STABILIZE ALL DISTURBED AREAS
WITH VEGETATION (PRACTICES 6.10, TEMPORARY SEEDING, AND 6.11,
PERMANENT SEEDING).
n
�Iti �FFiI�-
777' ff
1 /�,/FF /. i' i'-i. I I I/�
r-i iP1'I='I"f 1 If: ''i' 'i"i i-i-i
SEE APPROMATE SCHEDULE FOR DIMENSIONS
1. LA IS THE LENGTH OF THE RIPRAP APRON.
4. D . 1.5 TIMES THE MAMIUM STONE DIAMETER BUT
NOT LESS TITAN ■'
1 IN WELL-GEFM EXTEND TIIE APRON UP THE
CHANNEL BANKS TO AN ELEVATION OF 6• ABOYE THE
MAXNUM TAILWATER DEPTH OR TO 111E TOP OF THE
BLINK WHICH EVER IS LESS.
4, A FILTER BLANKET OR FILTER FABRIC SHOULD BE
WSTALLEB BETMEErI THE WPRAP AND SOL
FOUNDATION.
PIPE CULVERT OUTLET PROTECTION FOR DEFINED CHANNEL
TYPICA
FLARE
SECTIO
ISOMETRIC VIEW
RIPRAP
A A
L W
d. = PIPE DIA
L. = APRON LENGTH
W = APRON WIDTH
3 X PIPE 0 MIN PLAN
G = APRON DEPTH
I� La
SLOPE 0 S FLOW
wkii
NOTES: - SECTION A -A
FILTER BLANKET
SEE APPROPRIATE SMEDULE FOR ONENSIONS
1. LA IS THE LENGTH OF THE RIPRAP APRON.
2. A - 1.5 INS THE MA■MUM STONE DIAMETER
BUT NOT LESS THEN ■'.
3. A FILTER BLANKET OR FILTER FABRIC SHOULD BE
INSTALLED BETWEEN THE RFRAP AND SOIL
FOUNDATION.
PIPE OUTLET TO FLAT AREA - NO WELL DEFINED CHANNEL
ENERGY DISSIPATION PAD
C.rl - - ..-.. .-'PtArj ar _ . . .. .- , Nxy.Lfi'JP 1' 1y.- == - '-
CONCRETE WASHOUT DETAIL NOTES
Concrete washouts are used to contain concrete and liquids When the chutes of concrete mixers and hoppers of concrete
pumps are rinsed out after delivery. The washout facilities consolidate solids for easier disposal and prevent runoff of
liquids. The wash water Is alkaline and contains high levels of chromium, which can leach into the ground and
contaminate groundwater. It can also migrate: to a storm drain, which can increase the pH of area waters and harm
aquatic life. Revised NPIDES and INC General Construction Permits require the use of concrete washout areas on all sites
using concrete:
1. No concrete or cement slurry shall be discharged from the site.
2. Any hardened concrete residue shall be disposed of, or recycled on site, in accordance with local and state solid
waste regulations.
3. Concrete washout area to be minimum 50' from storm drain inlets and surface waters (ie, detention pond, ditches.
etc).
4. Prefabricated washout container or pit equal detail provided may be used if approved by Engineer,
5. Inspection.
a Contractor to check all connote. washout facilities daily to determine if they have been filled to 75% rapacdy
which is when materials need to be removed-
b. Both above- and below- ground self -installed washouts should be inspected daily to ensure that plastic IITings
are intact and Sid ewaIIs have not been damaged by construction activities. Contractor to repair plastic lining as
needed.
c. Prefabricated washout containers should be inspected daily as well to ensure the container is not leaking or
nearing 75 percent capacity.
d. Inspectors should also note whether the facilities are being used regularly.
6. Material Removal
a. Concrete washouts are designed to promote evaporation where feasible. However, if stared liquids have not
evaporated and the washout is nearing capacity, vacuum and dispose of them in an approved manner - check
with the local sanitary sewer authority to determine if there are special disposal requirements for concrete wash
water.
b. Remove liquids or cover the structures before predicted rainstorms to prevent overflows- Companies that offer
prefabricated and watertight washout containers generally offer a vacuum service to remove the liquid material
c. Contractor to remove hardened solids or reuse onsite or haul them away for recycling.
d. When removing materials from the concrete washout, building
a new structure or, if the previous structure is still intact, PLYWOOD 48"x24" O of �1 A I C i C p
Contractor is to inspect the structure for signs of weakening PAINTED WHITE I �J L I ]_ ,
or damage and make any necessary repairs. Line the BLACK LETTERS I - WA SH �U T
structure with new plastic that is free of holes or tears and fi" HEIGHT
replace signage if necessary_ It is very important that new
plastic s used after every cleaning because pumps and 0.5" LAG
concrete removal egUipTment can damage the existing liner, SCREWS
7. General Contractor is to educate concrete subcontractors, post signage WOOD POST
indicating the location and designated use of these areas, and provide 3"x3"x8'
careful Oversight to inspect for evidence of improper dumping of concrete
waste and wash water. Contractor should Include requirements in contracts
with concrete delivery companies that drivers must use designated
concrete washout facilities.
1
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,
SIGN DETAIL
(OR EQUIVILANT)
F
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PubricServicesDe rtments Voice 25-99.2465
Pa 2
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CITY of TOIL N N.C.
so BCID Herrin
P.O. Box
C? 4
venue � 70
1 A FAX [phone]
4Ylsbn Noh Carolina 27894 LSC'hITN I L i:ITY 7F WILSLN STAHGAR`PECIFILAT:IN&LfJLV wbnnc.ofl
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CONCRETE VVASHOUT
SCALE
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DETAIL$
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PIT DETAILS (Notes & Signage)
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P:\08PROJ\0279\0279-CCS\-Drawings\0279L-Upper School EC Details-12-15-22Awg
Sedimentation &
Erosion Control Details
Date: December 2022
Scale: None Map No.
Drawn by: VLK 08-L-0279L
Sheet No. EC-4 of 6

```i��lunugrr�y, TRC Stamp
IMRn _ =
Details Provided by APPIAN Consulting Engineers - www.oppioner-gineeFs.com 03/05/2020 - 11:53:28 AM
1
11
1
1
INFLOW 1
STRUCTURE(S)
A
L. C 7 It
-
101352-06
SEE BAFFLE
DETAIL
i
PLAN VIEW
I
` -_ - -
---------------
Z�44
/n
if If if
----------------
AREA*
LENGHT
WATrD
LJJ \
a
0 1
-- I
fn ----- 1
TOP OF
EMBANKMENT
;II J
III I
SEE NOTE 3
III I
SKIMMER
DEWATERING
f \ \ `\ DEVICE
EMERGENCY
SPILLWAY W1
12" CLASS'A'
a STONE ON TOP
OF FABRIC
SKIMMER SEDIMENT BASIN DESIGN CRITERIA
DRAINAGE AREA
MIN. LENGTH TO
MAX. LENGTH TO
(ACRES)
WIDTH RATIO
WIDTH RATIO
MIN. VOLUME REQUIRED
SURFACE AREA REQUIRED
10 Ac.
2.1
6.1
1800 CU. FT. PER AC. DISTURBED
325 SQ. FT. PER CFS Q10
6" MAX. DEPTH OF
"Z" (5' MAX.) FLOW OVER
"H" (2' MIN.) EMERGENCY SPILLWAY
"S" SEDIMENT STORAGE ZONE
INFLOW STRUCTURE FLOW
DEWATERING ZONE
FILTER FABRIC I_
SEE BAFFLE
DETAIL
352.06
CROSS-SECTION VIEW
11SEE SHEET 2 OF 4 FOR NOTES
0
ry
0
m
LL1
LL1
ry
Li
0
"W" (5' MIN.)
EMBANKMENT
"T" (1.5' MIN.)
-111i II IITII rITI -Liil
EMERGENCY-
SPILLWAY
ANTI -SEEP COLLAR
SEE NOTE 11 ON
DETAIL 352.02
SEE NOTE 3
Public Services Departments Voice [phone]
`mot p 1800 Herring Avenue, / P.O. Box 10 CITY of WILSON, N.C. FAX [phone]
Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY www.wilsonnc.org
SCALE: DETAIL #
SKIMMER SEDIMENT BASINS Not To Scale 2352 03
oti leis P�Ov (UNDER 1 o ACRES) REVISION DATE: SHEET#:
July, 2019 1 of 4
TEMPORARY SKIMMER SEDIMENT BASIN SCHEDULE
STRUCTURE
TOP OF
LENGTH 0
WIDTH 0
INVERT
SKIMMER
ORIFICE
SKIMMER
EMERGENCY
EMERGENCY
DRAWDOWN
#
BERM
(SPILLWAY
(SPILLWAY
OF
SIZE
DIA (IN)
INVERT
SPILLWAY
SPILLWAY
TIME
INVERT)
INVERT)
BASIN
WIDTH
INVERT
(FT)
(FT)
(FT)
(FT)
(IN)
(IN)
(FT)
(FT)
(FT)
(DAYS)
108.0'
S
S
104.0'
2"
1.5"
104.0'
8'
107.0'
2.3
1
AREACE
AREA
2888 SF
2888 SF
City Council Stamp:
Herring -Sutton & Associates, P.A.
Engineers - Surveyors - Planners
2201 Nash Street NW, Wilson, North Carolina 27896 [phone]
NOTES-
1. Area under embankment shall be cleared, grubbed, and stripped of any
vegetation and root material. The basin area shall be cleared.
2. The fill material for the embankment shall be free of roots or other woody
vegetation as well as oversized stones, rocks, organic material or other
objectionable material. The embankment shall be compacted by traversing with
equipment while being constructed. Spillways should not be constructed through
fill sections. All spillways should be lined and/or ripropped.
3. Sediment shall be removed and trap restored to its original dimensions when the
sediment has accumulated to depth shown on standard. Removed sediment shall
be deposited in a suitable area in such a manner that it will not erode and
must be stabilized.
4. The trap shall be inspected after each rain and repairs made as necessary.
5. Construction operation shall be carried out in such a manner that erosion and
water pollution is minimized.
6. All cut and fill slopes shall be 2:1 or flatter, unless certified by registered
geotechnical engineer.
7. Sediment basin embankments should be provided with erosion control and
stabilization.
8. Storage area may be constructed in any shape provided the minimum storage
volume requirement is met. The basin should also be oriented such that the
filter and the main flow of water and sediment ore on opposite ends on the
longer basin dimensions.
9. The length of the stone outlet (spillway) is to be based on a 10 year storm.
10. Whenever topography allows, the basin length should be twice (2X) the basin
width, to allow for settling. Baffles shall be installed in all basins.
11. Cleanout stakes shall be placed in all sediment basins of the low point in the
basin. The stakes shall be marked showing the half full, cleanout point, of the
basin.
12. For design of sediment basins, refer to the North Carolina Department of
Environment and natural resources, Erosion and Sediment Control Planning and
Design Manual.
13. For slopes greater than 10' in length and protected by silt fence at the toe of
the slope, slope terracing will be required.
14. The berm on sediment basins shall be seeded once final grade has been
reached. The silt fence may be removed if permission has been granted by the
City inspector after the gross has germinated and stable ground has been
establisF.ed.
15. Washed stone and wire backing shall be used with silt fence whenever sitt fence
Is place at the toe of a slope >10' verfical or along any channel or water
course where 50' of buffer is not provided.
16. Provide a foot pad on the bottom of the settling point for the skimmer. Foot
pad to be 12" thick rip rap. Keep foot pad clear of silt.
17. Use silt bag (Detail 359.02) for draining basin.
OF rsp
SW Herring P.O. Box CITY of WILSON, N.C.
11 Aveenue, i 10 FAX (252) 3W2453
/1.
4Ylson. Nodh Cw ollna 27894 USE WITH THE CITY OF WILOON STANDARD SPECIFICATtONSONLY vwvwmisonnc.org
GENERAL NOTES
SCALP
NC,o Scale
a 357 a2
Y
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O
SEDIMENT BASINS
REJuly -9
SHEEP#
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July, 2019
2 11
1 of 11
I Details Provided by APPIAN Consulting Engineers - www.appionengincers.com 06/07/2010 - 3:10:33 PM
BAFFLE,SET TOP ELEVATION OF
BAFFLE FABRIC 6"
FOR USE COIR .•
G/M2 COIR HIGHER THAN INVERT OF
EROSION
INTO BOTTOM OR SIDE. .. NOT SPLICE FABRIC _J _J THAN TOP OF CREST
POSTSUSE A CONTINUOUS PIECE ACROSS THE BASIN.
INTO BOTTOM •-
INLET ZONE
BAFF710 a
LEJ'I SUPPORT ROPE TO ORE
FIRST Rit TO PREVENT SAGGING
CHAMBER
OF
AREA BAFFLE J.,
11 INSTALL STAKE TO
SECOND SUPPORT "RE
CHAMBER 4
25% OF
SURFACE AREA 4' MAX,
•,
BAFFLE APART
ZONE
15% OF
SURFAC
AREA
•� Ir _
•- .`.lii� Sri �rl��5' CREST WDTHC;L4SS I RIP RAP
EARTHEN
EMBANKMENT
(III TO BE USED IN TEMPORARYSEDIMENT
ROCK DAM, SKIMMER BASIN, OR SEDIMENT
;8WH � e8,;"Pa 93x10 CITY of WILSON, N.C. 'Ffl-1")
Wilson, North Carolina 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY vyYYWsonmorg
d SCALE: DETAIL#
BAFFLE Not To Scala z 352.Q$
DETAIL REVISION DATE: 3HEETtlk
RTH June, 2070 1 or 2
Greenfield School
Upper Classroom Addition
Wilson Twsp., Wilson Co., NC
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UNIT' A
ISOMETRIC VIEW
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SCH 40 PVC
END CAP
SCH 40
PVC PIPE
PLAN VIEW
A
SCH 40 PVC
VENT PIPE
SCH4❑
PVC PIPE
"C ENCLOSURE"
WATER LEVEL
o
SCH 40 PVC BEND,
ANGLE BASE ON
ANGLE 0"
PIVOT POINT OF
5CH 40 PVC
"C ENCLOSURE"
"WATER" ENTRY UNIT"
ORIFICE PLATE
1/2" DIA. HOLES IN UNDERSIDE
SCH 40 PVC TEE
SEE PIPE MANUFACTURER
SCH 40 PVC PIPE
FOR APPROVED
CONNECTION TRANSITION
"ARM ASSEMBLY"
ENERGY DISSIPATOR @ FLEXIBLE
"ANGLE 9° (MAX. 45' AT
END OF OUTLET PIPE HOSE/PIPE
MAX. POOL ELEVATION)
2' x 4' x 1.0' THK. (1 S.Y_ ±)
CLASS'A' STONE ON TOP
!!l
SEE NOTE Ifs 352.U2
OF FABRIC
- wf
SECTION A -A
BOTTOM OF BASIN
of ��rs
P-Departments
Avenue,
Avenue, P-0. Box
oice (252) 299-24165
CITY of WILSON, N.C. VFAX(252)3W2453
78Uo Herring i 70
1SMlicSrrngA
�
Mlsou. North Carolina 27894
USE WITH THE CITY OF WILSON STANDARD SPECIFICATtONSONLY vwW.wrlsonnc.org
SKIMMER
SCALE
Not To Scale
DE1­A11_4
s362.01
rz
oT
DETAIL
RJune.r2010
1"'t 1
(Details Provided by APPIAN Consulting Engineers - www.oppianengineers-cam 06/07/2010 - 3:10:16 PM I
CONSTRUCTION SPECIFICATION
1. Grade the basin so that the bottom is level front to back and side to side.
2. Install posts or saw horses across the width of the sediment trap (Practice 6.62, Sediment Fence).
3. Steel posts should be driven to a depth of 24 inches, spaced a maximum of 4 feet apart, and installed up
the side of the basin as well. The top of the fabric should be 6 inches higher than the invert of the spillway.
Tops of baffles should be 2 inches lower than the top of the berms.
4. Install at least three rows of baffles between the inlet and outlet discharge point. Basins less than 20 feet
in length may use baffles.
5. When using posts, add a support wire or rope across the top of the measure to prevent sagging.
6. Wrap porous material (wire mesh, 700 plm2 comasion oontrol blanket or tree protection fence doubled).
Over a sawhorse or the top wire. Hammer refer into the sawhorse legs for anchoring. The fabric should
have five to ten percent openings in the weave. Attach fabric to a rope and a support structure with zip
ties, wire, or staples.
7. The bottom and sides of the fabric should be anchored in a trench or pinned with 8-inch erasion oontrol
matting staples.
8. Do not splice the fabric, but use a continuous piece across the basin.
MAINTENANCE:
Inspect baffles at least once a week and after each rainfall. Make any required repairs immediately.
Be sure to maintain access to the baffles. Should the fabric of s baffle collapse, tear, decompose, or become
ineffective, replace it promptly.
Remove sediment deposits when it reaches half full to provide adequate storage volume for the next rain and to
reduce pressure an the baffles. Take care to avoid damaging the baffles during cleanout. Sediment depth
should never exceed half the designed depth.
After the contributing drainage area has been properly stabilized, remove all baffle materials and unstable
sediment deposits, bring the area to grade, an stabilize it.
,0F Vp Public Services De artments `
_ cs 1 BW Herri rig Avenue, I P.O. Box 10 CITY of WILSON, N.C. FAX [phone]
13 yylleIXl, North Cerlcllna 27894 USE WITH THE CITY OF WILSON STANDARD SPECIFICATIONS ONLY www. sonnc.org
_ BAFFLE Not
DETAIL#
t To Scale z 35i.Q6
�•
1F1G DETAIL REVISION SHEET ;&
P:\08PROJ\0279\0279-CCS\_Drawings\0279L-Upper School EC Details_12-15-22.dwg
Date• December 2022
Sedimentation &
Erosion Control Details
Scale: None Map No.
Drawn by: VLK 08-L-0279L
Sheet No. EC-5 of 6

TYPICAL SEEDING SCHEDULE
SEEDING (PERMANENT)
SUMMER MARCH 1- AUGUST 31 WINTER SEPTEMBER 1- FEBRUARY 28
SEEDING MIXTURE
SPECIES RATE(LB/ACRE) SPEDIES RATE ( L13/ACRE)
BERMUDA GRASS (HULLED) 35 BERMUDA GRASS (UNHULLED) 35
CENTIPEDE 10 TALL FESCUE 50
GERMAN/BROWNTOP MILLET GRAIN 10 ANNUAL RYE 10
SEEDING (TEMPORARY)
SUMMER MARCH 1- AUGUST 31 WINTER SEPTEMBER 1- FEBRUARY 28
SEEDING MIXTURE
SPECIES RATE(LB/ACRE) SPECIES RATE ( LB/ACRE)
GERMAN/BROWNTOP MILLET GRAIN 40 ANNUAL RYE 20
OATS 50
SOIL AMENDMENTS
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TEST PROVIDED TO ENGINEER FOR APPROVAL, OR APPLY 4,000 LB/ACRE GROUND
AGRICULTURAL LIMESTONE AND 500 LB/ACRE 10-10-10 FERTILIZER FOR SUMMER SEEDING. FOR WINTER SEEDING APPLY LIME AND
FERTILIZER ACCORDING TO SOIL TEST PROVIDED TO ENGINEER FOR APPROVAL OR APPLY 2000 LB/ACRE GROUND AGRICULTURAL
LIMESTONE AND 700 LBS/ACRE OF 10-10-10 FERTILIZER
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. TACKING RATE TO BE 0.10 GALLONS PER SQUARE YARD. A DISK
WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. IF CRIMPING IS USE THE ABOVE STRAW APPLICATION
RATE SHALL BE DOUBLED.
MAINTENANCE
IF GROWTH IS LESS THAN FULLY ADEQUATE, REFERTILIZE IN 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.
CONTRACTOR IS RESPONSIBLE FOR MOWING, RESEEDING, FERTILIZING AND LIMING IF ADEQUATE GROUND COVER IS NOT OBTAINED AT NO
COST TO OWNER.
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH I
Implementing the details and specifications on this plan sheet will result in the construction
i b i l 'o r' actly t eln cons dared corn [toot with Che Ground Stahl izatl nand Mate gals Handlln
Y g P g
oft the I n r Genera s andF r e T sectionsh CGO Co st uctlon Gen r Pe Sectlan E es actly ! he
p Y
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority havino iurisdiction, All details and specifications shown an this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
Required Ground Stabilization Timeframes
Stabilize within this
Site Area Descrlption
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If stapes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' 1n
length and with slopes steeper than 4a
-7 days for perlmate r dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
ie) Areas with slopes
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case lodger than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintalned in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain
wit! not dislodge the soli. Use anc of the
techniques in the table below:
Tertsparary StAilrzarlan
Permanent Stahfiizatton
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tatkifiers
other mulches and tacklfiers
• Hydroseeding
■ Geotextile Fabrics such as per manentwil
• Rolled erosion control products with ar
reinforcementmatting
wl thou t tern pora ry grass seed
• Hydroseeding
• Appropriately appIled straw or other mulch
* Shrubs or other permanenn plantings covered
• Plastic sheeting
with mulch
• Unlformand evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as Concrete, asphalt r,I
retaining walls
• Rolled erosion run trol produrtswith grass seed
POLYACRYLAM I D E5 (PAMS) AN FLOCCULAN TS
I. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMSIFfoccufonrs.
2. Apply floccuiants at or before the inlets to Erosion and 5edimant Control Measures
3. Apply flacculants at the concentrations specified in the NC0WR List of Approved
PAMS/Flocrulants and in accordance with the manufacturer's instructians.
❑ pond a c a e a treated S w b f a c r" 4 Pr vide n I are for ant Inm nt f r farm ater a or cis ha In
po g g g
offsite.
5. Store floccuiants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
��+t"•"""'rr�i, TRC Stamp
,,% CAROB
L
••�1)0180 •
EQUIPMENT AND VEHICLE MAiNTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide dri ans under an stored a ui ment,
PP Y q P
3. 1dentlfy leaks and repair as soon as feasible, or remove leaking equipment from the
Project.
4, Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible),
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6, Bring used Fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) an site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4, Locate waste containers on areas that da not receive substantlaI amounts of runoff
From upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6, Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQ,U10 WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably ova 11abia.
S. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOI LETS
I. Install portable toilets on level ground, at least 50 Feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocatlon of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags,
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit,
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain Inlets, sediment basins, perimeter sedimem controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with sift fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided an this sheet and In accordance
with the approved pian and any additional requirements. Sail stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
1
'A • N RTN R L(NA ❑ L ❑
,i I
y 0 Environmental Quality
NCGOI GROUND STABILIZATION AND MATERIALS HANDLING
City Council Stamp:
1. THE DISTURBED AREA/CONSTRUCTION LIMITS FOR THIS PROJECT IS 3.3+/- ACRES.
2. ALL CUT AND FILL SLOPES WILL BE STABILIZED WITHIN 14 CALENDAR DAYS OF ANY
PHASE OF THE GRADING UNLESS OTHERWISE NOTED ON THESE PLANS AND DETAILS.
3. A PRECONSTRUCTION CONFERENCE WITH THE CITY OF WILSON SEDIMENTATION EROSION
CONTROL INSPECTOR IS REQUIRED PRIOR TO COMMENCING GRADING OPERATIONS.
4. ALL STREETS IN FRONT OF OR ADJACENT TO THIS PROJECT WILL BE KEPT CLEAN AT
ALL TIMES OR A WASH STATION WILL BE REQUIRED.
5. TREE PROTECTION FENCING WILL BE INSTALLED PRIOR TO COMMENCING GRADING
OPERATIONS IF APPLICABLE.
6. ALL SLOPES ON THIS PROJECT SHALL HAVE A SLOPE OF 3:1 OR FLATTER.
7. ALL TEMPORARY SEDIMENTATION -EROSION CONTROL MEASURES SHALL BE REMOVED
BY THE CONTRACTOR PRIOR TO RECEIVING FINAL RELEASE OF RETAINAGE AND AN
ACCEPTANCE LETTER OBTAINED FROM THE CITY OF WILSON STORMWATER DIVISION.
8• PRIOR TO FINAL ACCEPTANCE OF ROADWAY IMPROVEMENTS THE WATER QUALITY
POND MUST BEEN IN COMPLIANCE.
UNS1TE C13KRETE WASHOUT
STRUCTURE VrTH 1_11CR
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77
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CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
Manage washout from mortar mixers in accordance with the above Item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concretewashouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. if local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for dewaten ng or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlets) closest to the washout which could receive
spills ar overflow.
F. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
S. Install at least ane sign directing concrete trucks to the washout within the project
Iimits. Post signage on the washout itself to identify this location.
a. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags arother temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES ANO RODENTICI0ES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
IAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. a P e hazardous waste containers undercover or n secondary i I�
containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground
EFFECTIVE: 04/01/19
Herrin -Sutton & Associates, P.A.
Engineers -Surveyors -Planners
2201 Nash Street NW, Wilson, North Carolina 27896 [phone]
SEEDBED PREPARATION
SEEDING (PERM.)
i-9��aI I�t7J:7�n:�1til�
PRIOR TO THE SEEDING, THE CONTRACTOR SHALL CUT AND SATISFACTORILY DISPOSE OF
WEEDS AND OTHER UNACCEPTABLE GROWTH ON THE AREAS TO BE SEEDED. UNEVEN AND
ROUGH AREAS, AND OTHER MINOR IRREGULARITIES WHICH CANNOT BE OBLITERATED BY
NORMAL SEEDBED PREPARATION OPERATIONS, SHALL BE SHAPED AND SMOOTHED AS
DIRECTED BY THE ENGINEER TO PROVIDE FOR MORE EFFECTIVE SEEDING AND FOR EASE OF
SUBSEQUENT MOWING OPERATIONS.
THE SOIL SHALL THEN BE SCARIFIED OR OTHERWISE LOOSENED TO A DEPTH OF NOT LESS
THAN 5 INCHES EXCEPT AS OTHERWISE PROVIDED BELOW OR OTHERWISE DIRECTED BY THE
ENGINEER. CLODS SHALL BE BROKEN AND THE TOP 2 TO 3 INCHES OF SOIL SHALL BE
WORKED INTO AN ACCEPTABLE SEEDBED BY THE USE OF SOIL PULVERIZERS, DRAGS, OR
HARROWS; OR BY OTHER METHODS APPROVED BY THE ENGINEER. ALL ROCK AND DEBRIS 2
INCHES OR LARGER SHALL BE REMOVED ON CUT CUT OR FILL SLOPES WHICH ARE 3:1 OR
FLATTER , MEDIANS, SHOULDERS, AND DITCH SLOPES PRIOR TO THE APPLICATION OF SEED
AND FERTILIZER.
SEEDBED PREPARATION WITHIN 2 FEET OF THE EDGE OF ANY PAVEMENT SHALL BE LIMITED
TO A DEPTH OF 2 TO 3 INCHES.
THE PREPARATION OF SEEDBEDS SHALL NOT BE DONE WHEN THE SOIL IS FROZEN, EXTREMELY
WET, OR WHEN THE ENGINEER DETERMINES THAT IT IS IN AN OTHERWISE UNFAVORABLE
WORKING CONDITION.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
-i l Self -inspections ections are required during normal business hours in accordance with the table
P q g
of the Ins ction
below. When adverse weather or sate conditions would cause the safety Inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the Inspection. In addition, when a storm event of equal to or
greater than SA inch occurs outs lde of normal business hours, the self -inspection shall be
performed upon the cammen cement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
rrequiimv
Inspect
(during normal
Inspection records must Include:
btainess hours)
11)Rain gauge
Daily
Daily ra m r a l l amours ls.
mamtainea in
If na daiiv ram padpe dbservanom are made durfng weekend or
gong we rkino
hollrlay perinds, an¢ no Indlvidual pay rainfall Information is
ardor
available, rt.'Cdrd the cumuladve rain inewuramarn Fpr thnsn. un
attendee days (anc the, will detrrmine ii •sale inspectior ,s
nredad). Days an wFlch no rainfall occurred shall br recorded as
`zero" 'rho permirree may use another Lain-moriltorins device
approved by the Dirhiun.
i M C
At leas, ence per
i wanu canon vi the measurc3 impeacri,
h� aasvres
7 calendar days
2. Data and time of the inspection,
and wi[Mr 7m
a. Name of the person perk,rming the impkctlon,
hours of a rain
4 Indication of whether the mr: asures were aw-mring
event 1.oinchTn
property,
24 hours
s. Description of maimehan it neeos for the measbre,
5 Desmpt Ion. evidenre and date rA correnvr.. actions la ken
(3i Stnrmwarer
Ar reav ante per
1. Idmnfe anon of the diseha rge nutralls In speoed,
Illsrhargc
7 calendar days
2. Datr: and rime of rho lnspertian,
midalls (SDCSI
arrd within 24
3. Name of the person per'drming the Inspection,
hours pf a rain
'L Lwdence at Ind(a tors al stormwater pollution such as rnr
rvenr } l r} Inch in
sheen. floating or suspender) sollas or discoloradon,
24 hours
S. Ihdlcatlen of vlshlc wdlment!caving the site,
6, Description.. edderwe. and da to pf rprre[t;m ac dons token..
(4) perimeter of
"it teast once per
it visible sec imenta tion Ls Fund outside site limits, tile'~, a record
Site
7 calendar days
of the fvllnwinii shall be made:
and wft hlh 2d
1. Acrions takeh m clean up or subli re the sediment That has left
hours of a rain
the site limits,
ove nt r 1.0 Inch Ih
2. Desc ription, euidenc e, and date o F c armctive action s to kap, and
24 hours
3. An explanation ar to the actions taken tv contrpr tutu re
reWasm.
f5) Streams or
At knit nncr per
If The str m m werh nd has increased visible we"entation cr n
wetlands arnhe
7 calendar days
stream has visible increased tur bid lty From the wnww coon
or Dftsite
and within 24
aetivlty, then a record of The followln$ shall be made:
{where
hours of a rain
1. Deztriptian, evidence and date of cottecttve actitxrz taken, and
acccssiblel
vunnt? 1.0 Inrh In
2. Records of the rr nulmd mporn to tho appr npriaw DhisIon
24 hours
Regional Dfrice prr Pan Ili. Serrlon C, Item (00 of chic permit,
(ai Ground
After each phase
? The phase of gracing it nstaliadan or p"Imater E&SC
rtahilitation
orgr-Idlog
measures, nearing andgrubbing.irl:tWiatinnorstorm
mrasures
drainage facilities compimtoh of all Iasid-disturbing
activity, rons'rucllon or redevc1opment, permanent
gmund cover).
2. Doc u m e r. rat inn that the req uired ground si abihtation
mcas� res have been provided wimin the required
ti me frame or an assurance that they will he providrd as
Boor a: a"Ible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
1) Ground Stabilization*
Site Area
Stabilization Time
Description
Frame Exceptions
Perimeter dikes,
swales, ditches
None
and slopes
High Quality
Water (HQW)
None
Zone
If slopes are 10' or
Slopes steeper
less in length and are
than 3:1
not steeper than 2:1,
14 days are allowed
Slopes 3:1 or
7-days for slopes
50'
flatter
greater than
in length
All other areas
None
(except for
with slopes flatter
t
perimeters and
than
HQW Zones)
* "Extensions of time may be approved by the permitting authority
based on weather or other site -specific conditions that make
compliance impracticable." (Section II.B(2)(b))
PART III
SELF•INSPECTiON, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1, E&SC Alan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date th roughout the coverage under this permit.
The fallowing items pertalnino to the E&SC plan shall be kept on site and available far
inspectian at all times during normal business hours.
[tern to Document
Documentation Requirements
(a) Each E&5C measure has been instal red
Initial and date each E&5C measure on a Capy
and does not signiticamly deviate from the
of the approved E&SC Dian or complete, date
locations, dlmen s io ns and re lal We Oevetlons
and sign an inspection report that lists each
shown on the approved E&SC plan
E&SC measure shown on the approved E&SC
plan. This documentation Is required upon the
initial ir+stallation of the ES SC measures or if
the E&%C measures ate modified after initial
Installation.
(b) A phase of grading has been completed.
Initlai and date a copy of the approved E&SC
plan or complete, date and sign an inspectlon
report to indicate completivn of the
construcvon phase,
(ci Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
plan or complete, date and sign an inspection
plan.
report to Indicate compflance with approved
grew nil cave r sp ecif`tcatidns.
(d) The maintenance and repair
Complete, date and sign an Inspectinon report.
requirements for all E&SC measures
have been performed.
(e) CorrectiveaCtions have been taken
Initial' and date a copy of the approved E&SC
to E&SC measures.
plan a complete, date and sign an inspection
Icopart - ir)diCBto thf't:nrnpletiRrl al the
corrective action.
Z. Additional Documentation to be Kept on Ske
In addition to the E&SC plan documents above, the fallowing Items shall be kept on the
site and available for Inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based an unique site conditions that make
this requirement not practical:
(a) This General Permit as well as the Certificate of Coverage, after it is received.
(b) Records of inspections made during the previous twelve months. The permittee shall
record the required observations on the Inspection Record Form provided by the
Division or a similar inspection form that includes all the required elements. Use of
electronically -available records In lieu of the required paper copies wlII be allowed if
shown to provide equal access and utlIIty as Elie hard-capy records.
3. Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completi an and made available upon request [40 CFR 122.41]
PART 11, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water fro in the surface when these devices need to be drawn dawn
for maintenance a close out unless this is Infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather).
Non -surface withdrawals from sediment hasins shall be allowed only when all of the fa11owing criteria have been met:
(a) The E&SC plan authority has been provided with documentation of the non -surface withdrawal and the specific time periods orconclMons In which it will occur. The non -surface withdrawal
shall not commence until the E&SC plan authority has approved these items,
(b) The non -surface withdrawal has been reported as an ahticipated bypass in accordance with Part Ili, Section C, Item (2)(c) and (d) of this permit,
(c) Dewatering discharges are treated with controls to minimlxe discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include
properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewaterl no tr eatme n t devices described in Item (c) above,
e Veloci dissi a lon devices such as check dams sediment traps, and ri ra are provided at the dischar a poll of all dewaterin devices and
�� tY pat P. riprap P g P g
(f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of In a manner that does not cause deposition of sediment into waters of the United States.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that Must be Re
ported
vrted
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
* They are less than 25 gallons but cannot be cleaned up within 24 hours,
■ They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(c) Releases of hazardous substances In excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S.143-21&85.
(d) Anticipated bypasses and unanticipated bypasses,
(e) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be ire parked, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Department's Environmental Emergency Center personnel at (300)
858.4368.
Or urrance
Reporting Timeframes 1pfier 01scavary) and Other Requirements
(a) visible sediment
• Wthin 24 hours, an oral orelettronicnotification,
deposltian in a
o within 7calerrddrddys, a report that contains a description of the
stream or wetland
sediment and action, taken to add ressthe cause of the de position,
1)ivlsion staff may waive: the requirement for a written report do a
case by case basis.
+ It the stream is named an the NC 3o3Ndl list as impaired forsediment-
related causes, the permittee may be required to perform additional
monitoring, Inspections OF apply more stringent practices if staff
determine that addlIInnai requiraments are needed to assure comp Iiante
with the Federal or state impaired -waters conditions.
(b) OII spills and
• Within 24 hours, an oral orelectroriic notification, The notificatian
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
above
(c) Anticipated
• A report at least ten days before the dare of the bypass, ifposs4ible,
hyposses [40CIF R
The report shall include an evaluation of the anticipated quality and
127.41(m)(3)]
effect of the bypass.
(d) UnantTciprated
• Witlhin 24 hours, an araI orale ctroniC notification.
bypasses [40CFR
• Within 7cuiendardu^ a report that inctudesan evaluation of ate
122.41(m)i3))
quality and effect of the bypass.
(a) NonCornpliance
. Wiobin 174 hours, an oral orelectronicnotification.
with the conditions
• Within 7calendwdoys, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dares and times, and if the noncompliance has not
health or the
beet) corrected, the anticipated time riencampliarice is expected to
eovironmeni[40
continue; and sterns taken or planned to reduce. eliminate. and
CFR 122.41(1)(7)1
prevent reoccurrenceof the noncompliance. [40 CFR 122 A:(l)16).
■ 0ivislon staff may waive the requirement for a written report on a
case -try -case basis.
NORTH CA.ROLINA
}, Entrirnrtme►lcal Quality
NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING I EFFECTIVE: 04/01/19I
Greenfield School
Upper Classroom Addition
Wilson Twsp., Wilson Co., NC
P:\08PROJ\0279\0279-CCS\_Drawings\0279L-Upper School EC Details_12-15-22Awg
Sedimentation &
Erosion Control Details
Date: December 2022
Scale: None Map No.
Drawn by: VLK 08-L-0279L
Sheet No. EC-6 of 6