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40
Swale Calculations Chart Skimmer Sediment Basin Chart
Sediment Disturbed Q10 Volume Surface General To Dimension (ft) Qd Skimmer Orifice Td
Area Q10 Side- Channel V10 V10 p
Section (acres) (cfs) Slope Slope(%) (bare)(fps) (grassed)(fps) Basin Area (Acres) (CFS) (Cubic Yards) Area(sf) (Length x Width x Depth (cf/Day) Size (in) Dia. (in) (Days)
( J i o #1 3.0 6.5 206 2,220 74'L x 30'W x 2.5'D 1,854 2 1.4 3 1- 1 0.8 1.7 3:1 0.1% L 1 0.6
� #2 2.5 5.9 171 1,850 74'L x 25'W x 2.5'D 1,539 2 1.3 3
2 - 2 1.8 3.9 3:1 0.1% 1.4 0.7
Q=ciA
C=0.3
i10=7.2 in/hr.
Friction Factors
n=0.02 Bare Earth
n=0.05 Grass
v=1.49 R 2/3 s 1/2
n
Sediment Trap Chart
Sediment Disturbed Volume Size
Trap Area (Acres) (Cubic Yards) (Length x Width x Depth)
#1 0.9 126 50'L x 17'W x 4'D
Design Standard - 133.3 CY Sediment Trap Volume per Disturbed Acre.
7
Note:
Contractor shall insure that he and all his workers (contractors, subcontractors and other site personnel) do not damage construction stakes or other measures
used in laying out the project whether by the Engineer or another entity including those under the employ of the contractor. Contractor shall cause his workers to
observe and verify to the fullest extent practicable that stakes, other measures and grades are, or appear to be, accurate and correct, and immediately, but prior
to any associated work, notify the staking entity of any potential conflict, error or question regarding the work. The Engineer shall not be responsible if all of the
above measures are not strictly adhered to. The Engineer shall not be responsible where due to damage, his staking can not be verified. For critical or costly
components of the work, where the contractor believes that staking may not be preserved, the contractor shall request the staking entity to place staking in an
area where its preservation can be insured.
#3 3.0 6.5 203 2,187 81'L x 21'W x 2.5'D 1,827 2 1.4 3
#4 1.1 2.4 73 784 49'L x 16'W x 2.5'D 657 2 0.8 3
Q10=CiA Orifice Dia. (in)= Qd/(2310*`FTH-)
C=0.3 Qd=dewatering rate=V/td (C£/Day)
tc-5 min V=Volume (Cf)
i10=7.2 in/hr. td=Draw Down Time (Days=3)
H=0.167 ft For 2" Skimmer
Design Notes:
1. Side slopes from top of bank down to inside bottom of basin are to be 2:1
2. Side slopes from top of bank to ex ground are to be no steeper than 3:1
3. Skimmers shall be Faircloth Skimmers or approved equal 1
4. 325 sf minimum surface area per cfs of Q10 peak inflow 1
5. 66.7 cy minimum volume per acre of disturbed area
6. Upon complete restabilization of all disturbed areas, and approval by Engineer and NCDENR-LQS,
remove sediment basin and regrade swale, fertilize, seed and mulch.1_�
T T
T
� �
7. Field install Diversion Ditches as needed to ensure positive drainage towards upper ends of sediment basin. /
' � J •,
Sheet 1 of 3
jo Sheet 2f 3
•y�;;
1
I �1 General Notes
--- } Topographic
--1 1. in or Lion was created ro a combination o idar elevation
f ma e f m m f L
~--- data obtained from the N.C. flood mapping program, and ground topographic
Boundar Inset yar r surve b P ke di Assoc'a tes Incon NAvb'88 bat m Lidar t
n�
Scale: 1 -300'
Legend:
D.B. -- Deed Book
Ex. - Existing
inv. - Invert
M.B. - Map Book
Pg. - Page
RCD - Rock Check Dam
RCP - Reinforced Concrete Pipe
556 - Skimmer Sediment Basin
ST - Sediment Trap
Typ. - Typical
Existing Contour
... .. ... - Temporary Diversion Swale
sf sf - Silt Fence
a_ sf - Silt Fence and Clearing Limits
-..-..--.-..-..�-Wetlands Line
GRAPHIC SCALE: V=300'
0 100 zoo JUU 600 900
FEET
on
our
lines are not adjusted to match ground shots.
2. Boundary information was record data and GI5 overlay.
3. Development area is partially timbered and wooded.
4. All easements to be drainage and utility at dimensions shown, unless otherwise noted.
5. There are no Areas of Environmental Concern (AEC) as defined by Coastal Area
Management Act (CAMA) on this site.
6. Wetlands per Preliminary delineation by Davey Resource Group dated 7-25-2022.
7. Stormwater from this project drains to an unnamed tributary to New River which is
classified as C;NSW.
8. For additional information, see plan and profile and detail sheets.
9. This site is not affected by any special flood hazard per FEMA CPN 370340 4348 K
(Onslow County) effective date June 19, 2020. The New Preliminary flood maps for
Onslow County show that the AE flood zone will not adversely affect this project
and is not shown for clarity.
10. The purpose of this plan is to clear and clean debris for future development.
11. Soil stockpiles shall be encompassed by silt fence and maintain a minimum slope of 3:1,
if left for more than 14 days, temporary seeding to be added to stockpile.
Field Book: N/A
Disk Name: Aced #3007
Filename: Wells Property- Gendwg BLD
Job No.: S210716-7801
1111 C A P 1/�0i
E S S//���'���.rf�f�..
e • Oi V e
q SEAL y►r'.
34918
Sheet 1 of 3
Erosion and Sedimentation Control Notes:
1. Clearing or grading operations shall begin at low points of outfall release or other locations where
sediment control measures are shown on the plan and the sediment control devices (sediment
traps, silt fences, etc.) shall be installed before or simultaneously with the disturbance of any
area draining to the device.
2. Sediment control devices and structures shall be installed, maintained and amended as needed to
provide effective control of accelerated erosion and sedimentation until the contributing
watersheds are stabilized.
3. Requirements for materials handling shall follow rules set forth in NCG01, Part II, Section F.
4. Self -Inspection, record keeping, and reporting, shall follow rules set forth in NCG01, Part ITT,
Sections A, B, and C.
5. Construction Sequence:
A. Notify Engineer, owner and Land Quality Section prior to beginning construction.
B. Install stabilized construction entrance at all points of access.
C. Limits of clearing will be as shown. Owner may lessen the amount to clear. Confirm prior to
start of work. Silt fence shall be installed at the down slope edge of clearing immediately
after a lot is cleared. Silt fence shall be maintained until the lot is stabilized completely.
Silt fences are shown based on topographic information in the locations expected to be needed
to trap sediment prior to entering down slope areas. Actual locations of installation shall be
adjusted to the actual physical on site topography. That is, where silt fence is not shown on
the plan but the actual topography reflects a downward slope, silt fence shall be installed.
Where the actual topography reflects an upward slope silt fence is not required.
D. Clear A grub entire area within the clearing limits as shown.
E. Strip topsoil A stockpile for later use.
F. Construct sediment traps and rock check dams where shown. Construct drainage swales. Install
storm drainage piping.
G. Immediately seed, mulch and install temporary liners to swales where shown.
H. Maintain erosion control measures as needed to assure full functionability.
I. Reseed and mulch shoulders and swales. Install liners on all swales.
J. Provide ground stabilization (Temporary or Permanent) on perimeter areas and slopes greater
than 3:1 within 7 days following the completion of any phase of grading or construction; and 14
days for all other areas internal to the project.
6. Seeding Specifications:
Apply lime and fertilizer and work into 4 - 6 inches of soil. Seed mixture shall be distributed
uniformly and covered with a clean straw mulch. All mulch shall be crimped or asphalt tacked to
hold in place. Material and application rates as follows, and are generally considered minimums.
*Mulch rate to be doubled if crimped*:
Material Application Rate
Lime 3000 lbs./ac.
Fertilizer (10-10-10) 750 lbs./ac.
Mulch 2 tons/ac.
Asphalt Tack 435 gal./ac. (Max)
Permanent Seeding
Common Bermuda
(Unhulled Sept. 1 - April 1) 100 lbs./ac.
(Hulled April 1 - Sept. 1) 75 lbs./ac.
"Rebel" Fescue 50 lbs./ac.
Rye Grain (Sept. 1 - April 1 only) 50 lbs./ac.
German Millet (April 1 - Sept. 1 only) 50 lbs./ac.
Temporary Seeding
Dec. 1 - April 15
Kobe Lespedeza 50 lbs./ac.
Rye Grain 120 lbs./ac.
April 15 - Aug. 15
German Millet 40 lbs./ac.
Aug. 15 - Dec. 30
Rye Grain 120 lbs./ac.
7. Once all areas have been stabilized, contractor is to remove temporary erosion control measures,
regrade, di mulch to restabilize these areas.
8. For additional requirements, see the approved erosion and sedimentation permit.
Maintenance Plan:
1. All erosion and sedimentation control devices shall be checked for stability and operation
following every runoff -producing rainfall event and in no case less than once every week. Any
needed repairs will be made immediately to maintain all devices in the operating conditions
intended.
2. Sediment shall be removed from behind silt fence when it accumulates to a depth of six inches.
3. Sediment shall be removed from the inlet protection devices when storage capacity has been
approximately 50°1 filled.
4. A sediment tracked onto adjacent pavement shall be removed immediate)
►�Y J Pa Y•
5. A maintenance log of all erosion control inspections and maintenance performed shall be kept
onsite at all times.
6. Any sedimentation that occurs into the offsite stormwater drainage network shall be removed
immediately to prevent the stormwater device from sediment accumulation.
Erosion and Sedimentation Control Plan
SANDY HOLLOW
Richlands Twp., Onslow Co., North Carolina
Owner/Developer:
South State Development, LLC
121 Garnet Lane
Jacksonville, North Carolina 28546
GRAPHIC SCALE:1"=100'
DATE: 09/27/22
0 50 100 200 300
SCALE:1"=100' FEET
TIDEWATER ASSOCIATES, INC.
Consulting Engineers - Land Surveyors - Land Planners
Jacksonville, North Carolina
P.O. Box 976 - 306 New Bridge Street - 28540
Phone (910) 455-2414 - www.TidewaterENC.com Est.1961
Firm License Number: F-0108
a
�"N
George W. &
bEstelle
Brown Heirs
D.B. Z05, P . 9
Pg. 69
w �Urmwdter_
Setback
� \ � \ � �� W�``5 j �•�
J
/ <
558##9
;/
•f-/ � �w �w Wyf W �`w I �L� l
-ter' •� � W/' �/w r jy/�W W ' /
�. /W W WL /iF W' f i•1 f
/�/t
w 71.
1' Temporary
Diversion Swale
W �
�w
�•-
w
1
-' (-• •-••
t
yY1es Construclf;on, Inc.\,
1
\ I
I�.'B. 2544, Pg. 253
r M.B. 48, Pg. 181
R-20 Zone
Wooded / Undeveloped
$arbara B. Rouff Live Oak Estates /
- . _ _ _ Section III-B, Part 1 _
Skctioh IV
j M.B. 53, Pg. 53
R-20 Zone
S;ng1e Family
Sediment Tran Chart
Sediment Disturbed Volume Size
Trap Area (Acres) (Cubic Yards) (Length x Width x Depth)
#2 0.7 98 44'L x 15'W x VD
#3 0.8 ill 47'L x 16'W x 4'D
Design Standard - 133.3 CY Sediment Trap Volume per Disturbed Acre.
,�.. A- A
Y-
t-
10re
Contractor shall insure that he and all his workers (contractors, subcontractors and other site personnel) do not damage construction stakes or other measures
used in laying out the project whether by the Engineer or another entity including those under the employ of the contractor. Contractor shall cause his workers to
observe and verify to the fullest extent practicable that stakes, other measures and grades are, or appear to be, accurate and correct, and immediately, but prior
to any associated work, notify the staking entity of any potential conflict, error or question regarding the work. The Engineer shall not be responsible if all of the
above measures are not strictly adhered to. The Engineer shall not be responsible where due to damage, his staking can not be verified. For critical or costly
components of the work, where the contractor believes that staking may not be preserved, the contractor shall request the staking entity to place staking in an
area where its preservation can be insured.
Live Oak Estates
Section III-B, Part 2 1 '
M.B. 57, Pg. 93
R--15 Zone
k:
- ^ y
\ Live Oak Estates
Section 111-B, Part 2 r \ j j ^/
/ \ M.B. 57, Pg. 93 �f]�j -
D-1 F 7nna
� i Br'Y9a-F�ms
34'�i` Section III
M.B. 53, Pg, 6
R-20 Zone
5ing4e Family
B+SyeCtion iV
M.B. 53, Pg. 53
33� Section III R 20 Zone
f ' M.B. 53, Pg. 6 Single Family
R-20 Zone
Single Family
i
Skimmer Sediment Basin Chart
Legend:
D.B. - Deed Book
Ex. - Existing
inv. - Invert
M.B. - Map Book
Pg. - Page
RCD - Rock Check Dam
RCP - Reinforced Concrete Pipe
SSB - Skimmer Sediment Basin
ST - Sediment Trap
Typ. - Typical
-- 48 - Existing Contour
... ... ... - Temporary Diversion Swale
sf sf - Silt Fence
a_ sf Silt Fence and Clearing Limits
-••-••--•-••-••--Wetlands Line
Sediment
Disturbed
Q10
Volume
Surface General Top Dimension (ft)
Qd
Skimmer
Orifice
Td
Basin
Area (Acres)
(CFS)
(Cubic Yards) Area(sf) (Length x Width
x Depth
(cf/Day)
Size (in)
Dia. (in)
(Days)
#5
1.4
3.0
97
1,045 55'L x 19'W x
2.5'D
873
2
1.0
3
#6
1.7
3.7
119
1,281 61'L x 21'W x
2.5'D
1,071
2
1.1
3
f7
1.7
3.7
119
1,281 61'L x 21'W x
2.5'D
1,071
2
1.1
3
#8
2.1
4.5
145
1,564 68'L x 23'W x
2.5'D
1,305
2
1.2
3
#9
1.4
3.0
97
1,045 SS'L x 19'W x
2.51D
873
2
1.0
3
Q10=CiA
Orifice Dia. (in)-Qd/(2310*,FM
C=0.3
Qd=dewatering rate=v/td (Cf/Day)
Existing Road
tc=5 min
V=Volume (Cf)
i10=7.2
in/hr.
td=Draw Down Time (Days=3)
H=0.167 ft For 2" Skimmer
Design Notes:
1. Side slopes from top of bank down to inside bottom of basin are to be 2:1
2. Side slopes from top of bank to ex ground are to be no steeper than 3:1
3. Skimmers shall be Faircloth Skimmers or approved equal
4. 325 sf minimum surface area per cfs of Q10 peak inflow
5. 66-7 cy minimum volume per acre of disturbed area
6. Upon complete restabilization of all disturbed areas, and approval by Engineer and NCDENR-LQS,
remove sediment basin and regrade swale, fertilize, seed and mulch.
7. Field install Diversion Ditches as needed to ensure positive drainage towards upper ends of sediment basin.
F17 7 T T __1 7
1
1
1
1 Sheet 2 of 3
-�
1
l
Boundary Inset
Scale: V=300'
GRAPHIC SCALE: 1"=300'
U 100 euu JUu 600 900
FEET
Sheet 1 of 3
Field Book: NIA
Disk Name: Acad 93007
Filename: Wells Property - Gen.dwg BLD
Job No.: S210716-7801
�\\\Z`N C A �'���°�
•ate SEAL
• 34978
i•• Z
Sheet 2 of 3
Plan View
Temporary Stabilized Construction Entrance
Not to Scale
Construction Specifications
1. Aggregate size - Use 2-3 inch washed stone
2. Length - As effective, but not less than 50 feet.
3. Thickness - Not less than six (6) inches.
4. Width - Not less than full width of all points of ingress or
egress. Minimum of 12'.
5. Install filter fabric under entire footprint of the construction entrance.
6. Washing - When necessary, wheels shall be cleaned to remove
sediment prior to entrance onto public right-of-way. When
washing is required, it shall be done on an area stabilized with
crushed stone which drains into an approved sediment trap or
sediment basin. All sediment shall be prevented from entering
any storm drain, ditch, or watercourse through use of sandbags,
gravel, boards or other approved methods.
7. Maintenance - The entrance shall be maintained in a condition
which will prevent tracking or flowing of sediment onto public
rights -of -way. This may require periodic top dressing with
additional stone as conditions demand and repair and / or
cleanout of any measures used to trap sediment- All sediment,
spilled, dropped, washed or tracked onto public rights -of -way
must be removed.
Erosion and Sedimentation Control Plan
Owner/Developer.
SANDY HOLLOW
Richlands Twp., Onslow Co., North Carolina
South State Development, LLC
121 Garnet Lane
Jacksonville, North Carolina 28546
DATE: 09127122 GRAPHIC SCALE: 1"=100'
0 50 100 200 300
SCALE: 1"=100' FEET
TIDEWATER ASSOCIATES, INC.
Consulting Engineers - Land Surveyors - Land Planners
Jacksonville, North Carolina
P.O. Box 976 - 306 New Bridge Street - 28540
Phone (910) 455-2414 - www.TidewaterENC.com Est.1961
Firm License Number: F-0108
4" Sch 40 PVC pipe (solid, not
foam core) through dam for
attaching skimmer to
Variable Width Fabric Lined
Rock Spillway: See Details -
Baffle placement:
Baffles: see -
1st in mid -basin
details for
2nd halfway
construction
between 1st and
outlet end of basin
Large sediment -
storage provided
in upper end of
basin
Existing ground
4" Sch 40 PVC pipe
through the darn at 1%
min. slope
Rope
attached to
skimmer Shallow pit excavated
under skimmer
(Min. 8" Deep)
(Max 12" Deep)
Embankment
to forth basin
3:1 Max
} Slope
s"
.y
n
x Weir X
x x
N
u
c -4-
c
no m
b s=
4" Sch 40
Coupling
Connection
17' hose, ss clamps -J
2" threaded male nipple
on outlet end
2J' pvc float
1�' 5ch 40 SOLID pvc barrel
or "arm"
SUPPLIED BY USER
O �-
1" Vent O
with Yellow tip 4
Inle# Aluminum straps
suspending inlet
�Tr p
2" inlet y Patent#; 5,820,751
extension
O
2" HEAD on center of
inlet and orifice
A
Skimmer shown in
floating position
1. Dimensions are approximate.
2. Barrel length (solid, not foam core pipe) should be 1.4 times the depth of water with a minimum
length of 6' so the inlet can be pulled to the side for maintenance. If nwre than 10' long weight
may have to be added to inlet to counter the increased buoyancy_
3. Inlet tapers down from 2" maximum inlet to a 1.5" barrel and hose. Barrel is smaller to reduce
buoyancy and tendency to lift inlet but is sufficient for flow through inlet because of slope. The
inlet orifice can be reduced using the plug and cutter provided to control the outflow rate,
See chart for each individual basin's orifice diameter.
4. Inlet is 4" pipe between the straps with slots cut in the inlet and aluminum screen door
(smaller than shown is illustration) for access to the inlet and orifice inside).
2" Faircloth Skimmer Detail
Not to Scale
o�
In Channel
Plan View
Section View
Median Stone Diameter = 6" unless otherwise
noted on Erosion and Sedimentation Control Plan.
1, D = Inside Diameter or width of culvert.
2. Minimum stone thickness to be two tithes specified stone diameter.
3. Fabric to be installed under riprap located in swale.
4_ Finished grade of riprap shall be at invert elevation of pipe.
*Not placed on top of ground at invert.*
Permanent Riprap Apron
Not to Scale
S Steel Post
'00 7 F
Oij0 7); rSAQ ze
Sr Q�yArJ
Note: 110qOr Welded Wire Mesh
Burlap shall not be used. 6" Below Ground
Note:
Spacing for posts shall be:
1.8 feet maximum with wire mesh
or
Direction of 2.6 feet maximum without wire
Runoff flow - mesh with extra strength
filter fabric.
Bottom Steel Post
Welded Wire Mesh ri
h
Plan View Erosion &Siltation
Top of Control Fabric Compacted N
Channel 6" Channel Soil
Depth as W = Varies Top 12" / / Ground Line
shown on 24" Min -
plans
W 611 �� Extra Depth Required
Channel 41.for Non -stable Soils
D811
D 1�� iD Flow
`
drn drn
2:24 Inches Section View
1 Channel �_#67 Slone Typical Installation of Silt Fence
3 _YP ,.
Not to Scale
Section A -A Bottom Section B-B
Tem orar Swale Detail Nate`
_., P Y Given dimensions are minimum unless otherwise specified
Not to Scale by the Engineer for site specific conditions,
Fortified Rock Check Dam
x - x
m
r_
Inf low from
Curve baffles
sides diverted
to make them
to upper end of
stronger
basin to
prevent"short
x ---. x
circuiting".
Excavation to
form basin
2:151ape
basin width
Length to width ratio:
twice as loong as wide
Inflow into upper
UNLE55 a V-shaped
end of basin
bottom is created in small
basins. See instructions
Plan View
Upper end of basin
deep to provide storage
Top of impundment; volume
crest of overflow
1 Jt
�fflExcavation
75light
to form
basin; used to build
embankment
Shallow pit slope on bottom toward
excavated under outlet so
water drains out the
the skimmer skimmer
Skimmer Sediment Basin Detail
Not to Scale
i
O
a
O
aa�.
......:::.::.■■■■■■■■■.: ir..■■■■■■■■■■■■.■■torn_
■■u■t UR8,00■■■■■... urro.■■■■■a■■aua■v.e
nua■■�uuauua■arru ir■uauu■■r■■.■■.■■■■■
r-r•
- -- r■r•■■■■u■a■■■ urrw■r■......■■■rrwu■�
r-'r-'r�r�r rfrfr-'r�r.
r-�r-
.,
.:%?!.?:'I:.:Grp!.:!.!I�!..I!go=
3' Mo. r 1 3. Max.
Section A -A
Not to Scale
Steer pbst
Welded Wire Mesh
W. 57
i. -um rratrn �
6" Min
Filter Fabric
Stone
W = Check Dam Width
D = Depth of Channel
dm = Median Diameter of Stone
Not to Scale
NOTES:
1. Sediment shall be removed and the trap restrored to its original
dimensions when the sediment has accumulated to J the design volume
of the trap. Sediment removed from the basin shall be deposed in a
suitable area and in such a manner that it will not erode.
t 2. The structur shall be checked regularly to insure that it is structurally
sound and has not been damaged by erosion or construction equipment.
the height of the outlet should be checked to insure that its center is
at least 1.5 feet below the top of the embankment.
3. Weir Length
Drainage Area Weir Length
(Aires) (Feet)
2 6.0
3 8.0
4 10.0 Stone Structure
5 12.0 5'
Min.
4. See sediment trap chart for volumes & sizes.
3600 cu. ft./Acre
I soil Storage Area c? j
1/4" 23 Gmtge
Notes'
1. Welded Wire Mesh to have 1/4' square holes.
W. 57 Stone
~
2. Wire Mesh shall be installed in the same manner Design
F Settled
as a typical silt fence section. Minimum burial
°moo H
depth to be 8" with 4" folded upstream of the Top
t Compacted Soil
v flow at the bottom of trench. Separation of
Flay 24' Min.
48" steel post is shown as a maximum of 3'.
Ex. Ground Line
3. Stone shall be overlapped on both sides of 1/4'
Filter Fabric
wire mesh/silt fence interface 12" min. silt fence section
4,
adjacent to wire mesh stone outlet shall have
;r
typica[ silt fence welded wire mesh with a max. steel
$"
t�
post spacing of 6'.
Section B-B
Not to Scale
Wire Mesh Stone Outlet
Not to Scale
PART III
SELF41NSPECTION, RECOROKEEPING AND REPORTING
SECTION A: SELF-INSPECTIO"
Self -inspections are required during normal business hours In accordance with the table
below. When adverse weather or site conditions would cause the safety of the 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 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequer"
Inspect
(durLµ raerMA
ttnpaetioa reeeapatwo ltadudat
business tours)-__
(1)Raingauge
Daily
Dattyrainfallminunt:
maintained In
If no dilly rain gauge observations are made during weekend of
good workyq
holiday periods, and no individual -day rainfall mtormailon is
older
available, record the cursularlve rain measurement for those un-
attended days lane this will determine if a she inspection +s
neededl. Days an which no rainfall occurred shall be retarded as
-zero" The pttrmlQea may use another rain-mtamtofing device
approved by the pivtebn.
[2l ease
At least once per
1. Idondlicadan of the measures Inspected,
Measures
7calendar days
2. Date and time of the inspection,
and within 24
3. Name OF the prermtt Performing rheinspection,
hnurs of a rain
4. Indication afwhatherthe measureswere Operating
event>1.0 inch In
property,
24 hours
S. Description of mHritenance needs for the measure,
6 bcscri tiOO eviirlrce and date of corrective anions talon
[31 Smrmwater
At least or ce per
1 fdrntRiratlnn of tor. discharge uutfalls irspened,
dls[fnargr
7 calendar days
2 Date and time of the inspecdnn,
outtalk (SDCS)
and within 24
3. Name of the person P1101mi" The InIpernon,
i
hours of a rain
4, evidence of indicators or stnrmwatn pMh"inn,.ah asdl
event a 1.0Inch In
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of v"ible sedirtent leaving the site.
6. Datm tion, evidence, and date of corrective actions taken.
(4) Pedmotei of
At least Onto per
if visible Sndiw tatinn is found outside ;ire knits, thin a retard
she
T tatamu days
of the lotioMng stu0be made:
and within 24
1. Acrionstaaen to clean up Or stabilize the sedlmert that has left
hours of a rain
the site limits,
event a 1.01nch In
2 Deserlption, evidence, and date of corrective actions taken, and
24 hours
3. An expinnatlon as to the wdons taken to control future
releases.
(5) Streams or
At least Once per
If the stream or wet Land has Increased visible sedknentatlon or a
wetlands omit.
7calendar days
stream has visible imreased turbidlry from the construction
Or ondte
and within 24
agwlty. then a recor lot the following shag be made:
(where
hours of a rain
1 tleserlpdw, evidence and date of corrretivr actions taken, and
Ar .I- lib"
went; 2.0 inch 3n
2. Rmnrds of the ratiulfed reports to me appropriatp Divtsinh
24 hours
Aeglanal Oflire per Partill, Sectwn G, Item(2)(a)af_tNsp_e k.
__ _ _
6 Gourd
f)
_ ___
After each ha
phase
_
1, The phase of ads installation of perimeter E&SC
P grading [
seabtiirattexs
of grading
measures,clearingand grubbing, Installation of storm
measures
drainagefaciiitiet, completion of all land disturbing
acuvhy, construnian or rodQ"k prr 00t. Perrisanent
ground cover).
2. Documentation slat the required ground mbeiladon
measures have been provided within the required
tlmefrsme or at assure ace that they will be provketl as
soon as possible.
NOTE: The rain Inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECOROKEEPING
1. EIftSC Plan 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 throughout the coverage under this permit.
The following items pertaining to the E&SC plan shalt be kept on site and available for
inspection at all times during normal business hours.
Item to Document
Dowmeretation Requfremettn
is
(a) Each E&SC measure has been installed
Initial and date each E&5[ measure on a copy
and does not significantly deviate from the
of the approved E&SC plan of complete, date
locations, dimensions and relative elevftions
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 dacumentIlTion is required upon the
Initial installation of the E&SC measures or If
the E&SC measures are modified after initial
Installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
plan or complete, date and stgn an Impecilon
report to indicate completion of the
construction phase.
(c) 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 rvmplete, date and sign an inspection
plan.
report to Indicate compliance with approved
;.._
ground cover specifications.
. ... _._ .......
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC measures
have been performed.
(e) corrective actions have been taken
Initial and date a ropy of the approved E&SC
to E&SC measures.
plan or complete, date and sign an inspection
report to indicate the tbtnpwlon of the
corrective action.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following 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 on unique site conditions that make
this requirement not practical:
(a) This General Permit as well as the Certificate of Coverage, after it Is received.
lb) 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-availabte records In lieu of the required paper copies wilt be allowed if
shown to provide equal access and utility as the hard -copy records.
3. Documentation to be Retained for Three Years
All data used to complete the e-NO( and all inspection records shall be maintained for a period
of three years after project completion and made available upon request 140 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 from the surface when these devices need to be drawn down
for maintenance or 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, timeswith extended cold weather).
Non -surface withdrawals from sediment basins shall be allowed only when all of the following 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 or conditions in which it Wit 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 anticipated bypass in accordance with Part III, Section C, item (2)(c) and (d) of this permit,
(c) Dewatering discharges are treated with controls to minimize 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 dewatering treatment devices described in Item (c) above,
(e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(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 or the Unlied States.
NCG01 SELF -INSPECTION, RECORDKEEPING AND REPORTING
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCG01 CONSTRUCTION GENERAL PERMIT
implementing the details and specifications on this plan sheet will result In the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having Jurisdiction. Ali details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
Required Ground Stabilization Tlmeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
IbJ High Quality Water
7
None
(HQW I Zones
(c) Slopes steeper than
If slopes 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' in
length and with slopes steeper than 4:1
-7 days for perimeter 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,
(e) Areas with slopes
ditches, perimeter slopes and HQW Zone
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: Atter 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 longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion Until -permanent round stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
r stabRhaeon
Permartert5tabflizaUon
• Temporary grass seed covered with straw or
+ Permanent grass seed covered with straw or
other mulches and tackJfws
other mukhesand tackiflers
• Hydwstredlrg
• Geotextile fabrics such as permanent soil
• Rolled erosion control products with or
reirrforcemern matting
without temporary grass seed
•Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plengnfis oovered
• Ptastiesheeting
with mulch
• Un'dormandeverdydistributed Voundcow
sufficient to restrain erosion
Structural methods arch as concrete, asphalt or
retaining walls
• Rolled erosion control productswith grassseed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures,
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMSIFfoccufonts and in accordance with the manufacturers instructions.
4. Provide pending area for containment of treated Stormwater before discharging
offske.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify 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
A. 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) on site to contain construction and domestic wastes.
3. Locate waste containers at feast 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial 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 ry containment. Repair or repla
ce 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 LIQUID WASTE
I. 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 available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
S. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. 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 relocation 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.
PART fit
SELF -INSPECTION, RECOROKEEPING AND REPORTING
SECTION C. REPORTING
1. Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) oil spills if:
e 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. 143.215.85.
(d) Anticipated bypasses and unanticipated bypasses.
(e) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Repording Tlmeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, 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 (800)
858-0368.
occurrence
Reporting 71meframes (After discovery) and other Requirements
(a) Visible sedimenl
• Within 24houn, an oral or electronic notification.
deposition in a
• t4rirbin 7ealerrdar 4". a repot that contains a description of the
stream or wetland
sediment afid action; taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• lithe stream is named on the Nc 3431di iist as impaired for sediment -
related causes, the Permittee may be required to perform additional
monitoring, Inspections or apply more stringent practkes If staff
determine tffat additional requirements are needed to assure compliance
with the federal or state impaired -waters conditions.
(b) oil spills and
• WkWa 24hours, an oral or electronic notification. The notification
release of
shall include Information about the date, tirraG mature, volume and
hazardous
location of the SPIN cr release,
substances per item
lMHO above
(c) Anticipaled
Arels- at fenrt terrillm hefon the orate of** byppw iJpossrble.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)l
effect of the bypass..--"`_'-------.----
[d) Unanticipated
• *7tNn 24 flours, an xaf or electronic notification.
bypasses [40 CFR
• W#Nn 7 calendard4% a repot that includes an evaluation of the
122A1(m)(3))
quality and effect ofthe bypass.
(e) Noncompliance
• WfeMn 24hatirs, an aral or electronic notification.
with the conditions
• W dWa7calendardays, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of norammpNance,
may endanger
including exact dates andtimes, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance h expected to
Onvironmen4140
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(IX7))
prevent reoccurrence of the rtortcompliance. (40 CFR 122.41(Iii6I.
• Division staff may waive the fequiremem for a wrltten report on a
case -by -case basis.
(NORTH CAROLINA
iw Environmental Quality
EFFECTIVE: 04/01/19
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
3. 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 concrete washouts 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 detall.
S. Do not use concrete washouts for dewatering 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 5o 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 -inlet(s) closest to the washout which could receive
spills or overflow.
7. 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 one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9.. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional When utilizing alternative or proprietary
j 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 AND ROOENTIClUtS
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.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
=ram 2. Place hazardous waste containers undercover or in secondary containment.
' , NORTH CA ROLI NA 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
\ � 1 Environmental Quality
NCG01 GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen-materlal stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt 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 on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
Detail Sheet
� Filter Fabric
9 Dla Rtprap
Trap Bottom to be 1.5' min.
SANDY HOLLOW
Trap Bottom below existing ground
Richlands Up., Onslow Co., North Carolina
Cross Section
Overfill 6"
for Settlement
Owner/ Developer:
4' Min.\\\\�H'CAll��i,
See
RO
South State Development, LLC
ve
Abot
Emergency
1'�®�,�d of SS/*�. ��
121 Garnet Lane
v
3:15jde
By -Pass
411.
Q
Jacksonville, North Carolina 28546
_
- Slope Max.
i+
Err Below
Settled TopFilt
SEAL -
- 34976 w
Fabric Slop Max.
of Dam.
= •
DATE: 09/27/22
Natural
nd
%ter ,G �N
SCALE: Not to Scale
��a�aar
Stone Section
TIDEWATER ASSOCIATES, INC.
Temporary Sediment Txap Detail
Consulting Engineers - Land Surveyors - Lartti dpriers
Pl
_
-i "'
Not too state
Field Baok: »vrA
Disk Name: Arad 03007
Jacksonville, North Carolina
Filename: Wells Property- Gen-dwg BLD
Sheet 3 3
P.O. Box 976 - 306 New Brid a Street - 2$540
Phone 455-2414 Est 1961
Job No.: S210716-7801 of
(910) - www.TidewikterENC.com
Firm License Number: F-0108