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SAND MINE PLAN
ROSINDALE SAND, LLC
LOCATED IN CARVERS CREEK TOWNSHIP, BLADEN COUNTY, NORTH CAROLINA
DESCRIPTION OF WORK: SAND MINE OPERATION
OWNER: ROSINDALE SAND, LLC
1402 CANAL COVE ROAD
LAKE WACCAMAW N.C. 28450
700
t
17(
1710
1771
I Bluefield 1788
Clarks
Crossroads
1760 (- 1708
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h
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Lisbon
1713
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Bladen
Springs
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17�9 Carvers 17 D
sa "e Creek 09 :?` Kelly 53 `
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n" .r 1731 4y'� ,Nffffl, LL „7a O
a 11 PLANTATION 1 37 1 2"
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Rosindale -
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87?770\
1.766 . I ✓.. / .
N _
DECEIVE[
AUG 0 9 Z021
LAND QUALIT
MINING PROGR;,
RECEIVED
emfimrv+iW -
A
LAND QUALITY
MINING PROGRAM
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Date:
07-30-21
Scale:
HORZ: 1 "- 400'
Drawn:
gw
cne ked:
9W
P'ged N.
PRELIMINARY
PLAN
l�Aul�/��%
R ,
SEAL
L-2876
t o07•
G'Q9�O SUS .�
✓ F '' y
AWP\\A.
DATE: 07-30-21
Shoot No:
1
Of.5

LINE
BEARING
DISTANCE
L1
N 32'21'58" E
79.75'
L2
N 39'12'65" E
110.87'
L3
N 44"08'22" E
_
131.79'
L4
N 43'39'58" E
162.41'
L5
N 44'NY23" E
165.31,
Lo
N 42"35'27" E
139.03'
L7
N 43'29'41" E
133-14'
L5
N 44"40'32" E
96.50,
L9
N 49'4742' E
83.28'
L10
N 55'15'47" E
48.15'
L11
N 51'57'07" E
36.62'
L12
N 40'50'46" E
59.55'
L13
N 43'34'22' E
73.30'
L14
N 52"48'23" E
102.651
L15
IN 52'15'18" E
298.66'
L16
IN 51"39'14" E
122,04'
L17
IN 46'53'58" E
61L54'
L18
N 35'44'33' E
60.12,
L19
N 22"01'49" E
712V
L20
N 16'26'19" E
168.41'
L21
N 17`38'62" E
185.34'
L22
N 14'18'11' E
271.93'
L23
N 13'52'10" F
350.65'
L24
N 15°26'06" E
165.35,
L25
N 17'23'02" E
185,44'
L28
N 13'C5'37" E
144.85'
L27
N 12'28'18" E
297.18'
L28
N 13'27'12" E
147.14'
L29
N 04'01'26" E
1515-W
L30
N 06'04'18" E
117.24'
L31
N 02°50'17" W
200.02'
L32
N 10'17'28" W
76.07'
L3.1
IN 29'32'01" E
43.93'
L34
N 60'20'08' E
38,82'
L35
N 66"51'06" E
30.06,
L36
N 88"10'51" E
46-94'
L37
S 77'50'26" E
48.13'
L38
S 66"32'26" E
60.64'
L39
S 60"45'19" E
48.20'
1_40
S .59'00'06" E
60.70'
L41
IS 67'06' 12" E
40.24'
L42
S 87"57'07" E
50.12'
L43
N 78'29'30" E
47.09'
L44
N 89'41'24" E
57.76'
L45
S 59'67'15" E
51.41'
L46
S 41'51'06" E
62.81'
L47
S 45'48'12" E
82.58'
L48
S 49'16'38" E
76.867
L9
44'2521'
158.3
L4
402932"E
'S
21.09Q'
PERMIT BOUNDARY
LINE
IBEARING
DISTANCE
L51
IN 23"13'13" E
78.44'
L52
N 29*18'02' E
62.99'
L53
N 60'41'58' W
22-60'
L54
S 62"33'43" W
77.90'
L55
N70"01'51"W
125.24'
L56
N 38"38'58" W
121.65
L57
N 02'30'17' W
93.64'
L58
N 06'31'27' E
33-61'
L59
N 52"5127" W
101.42'
L60
N 06'11'32' E
87.96'
L61
N 45'31'07" E
35.64'
L62
N 23'34'27' E
67.22'
L63
N 18'14'22" W
53.52'
L64
N 44'41'28" W
70.15'
L65
N 42'54'32' W
58.96,
L66
N 22'31'2e' W
63.82'
L67
N 44"07'47" W
72-20'
L68
IN 08005'09" W
69.11,
L69
N 36'28'49" E
33.02'
L70
N 37'29'40" E
51.57'
L71
S 89*32'17" E
29.88,
L72
N 80'27'57" E
148-71'
L73
N 76"54'50" E
61.75'
L74
N 87'11'31" E
46.82'
1_75
S 16'33'48" E
65.80,
L76
S 44'16'19" W
40.51'
L77
S 12"14'23" bV
60-53,
L79
S 45'45'36" E
105.04'
L79
S 73'36'47" F
87-58,
L90
S 11'37'19" E
70.12'
S 05"47'33" E
110.17'
S 00"37'21" W
63-93,
S 02'12'51" E
42.82'
L
S 28'59'07" E
172'
S 53'17'06" E
70.64'
S 51,19,09" E
76.22'S
42'21'12" IF
92.03'
L88
IS 65"10'51" E
50.27'
LB9
IS 24"49'09" W
96.22'
L90
S 20'02'47" W
86.92'
L91
S 29'1613" W
45.6U
L92
S 29'1B'02" W
70.95'
L93
S 23'13'13" W
83.3e'
L94
S 40"29'32" W
83.33,
II
N 44"25'29" W
210.82'
L96
N 49°16'38' W
76.25'
L97
N 45'48'12' W
85.82'
L98
N 41 "51'06" W
56.57'
L99
N 119'5T15" W
29.88'
1_100
IS 89"41'24" W
39.29'
PLANNED EROSION AND SEDIMENT CONTROL PRACTICES
1. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
CE Practice 6.06
Shall be installed at the entrance to the project from
the road and will be controlled with downstream practices,
During wet weather it may be necessary to wash truck tires
at these locations,
2. LAND GRADING
Practice 6.02
Grading should be limited to areas as shown on the
Plans. Cut and fill slopes shall be 311 or flatter except
where specifically indicated.
5F 3. SEDIMENT FENCE
Practice 6.62
Sediment fencing should be installed as shown on the
prevent any interior areas from eroding onto adjacent areas,
�C 4. GRASS -LINED CHANNELS
Practice 6,30
All overflow swales to be graded to design
configuration, seeded, and stabilized If necessary with
temporary straw -net liners to collect and convey site water
off site as shown on Plan, After final project
stabilization, swales to be re -graded and cleaned of
siltation as needed to establish original contours for
stormwater conveyance.
STABILIZATI❑N TIME FRAMES,
SITE AREA DESCRIPTION STABILIZATION
Perimeter dikes, swales, ditches and slopes 7 DAYS
High Quallty water (HQW) Zones 7 DAYS
Slopes steeper than 311 7 DAYS
Slopes 31l or flatter 14 DAYS
All other areas with slopes flatter than 411 14 DAYS
NOTE WELL,
ANY AREAS ON -SITE WITHOUT ACTIVITY SHALL BE STABILIZED WITHIN
15 WORKING DAYS AND AS ABOVE. ALL SLOPES
MUST BE STABILIZED WITHIN 21 CALENDAR DAYS OF CEASE OF ANY
ACTIVITY.
M= 5
1~ 50' n= 0.03
5
41 `�
GC ) GRASS LINED
nominal s= 0.30%
CAPACITYE: 100+cfs @ 1.0 fps
5:1 GRASSED CHANNEL
(50 FT OVERFLOW SWALE)
NOT TO SCALE
BASIN WIDTH = 200 FT
7 PROPOSEO OVA TER SURFACE
7-
E10
Op
NATURAL GROUND
"_�PRIMARY& EMERGENCY SPILL WA�
(EXTENDS AWAY FROM BASIN UNTIL
MEETS NATURAI. GROUND). RIP RAP
PROTECTION 10 BE PROVIDED -
</�
ss SEDIMENT BASIN wl ROCK DAM
Practice 6.63
NOTES:
1. CONTOURS SHOWN WERE TAKEN FROM NCDOT LIDAR
LEGEND
CE = CONSTRUCTION ENTRANCE
° = POWER POLE
--� = DRAINAGE FLOW DIRECTION
E.I.P. = EXISTING IRON PIPE
NOTES
E.I. = EXISTING IRON
1. AREA COMPUTED BY COORDINATE METHOD
E.C.M. = EXISTING CONCRETE MONUMENT
II = RIGHT OF WAY
2. ALL DISTANCES ARE HORIZONTAL
C.P. = COMPUTED POINT
ET = EXISTING SEDIMENT TRAP
J. FOR REFERENCE SEE A5 NOTED
4. SURVEYED JANUARY OF 2018
PROPERTY LINE
PROOSED SILT FENCE sF
COMPUTED PROPERTY LINE ---
Joel.
REQUIRED PERMITS (not limited to)
1. NORTH CAROLINA STATE (MINING PERMIT
2. NCDENR,iDWQ STORMWATER FXEMPTION
N 02'24'58" E
11 123,16,
N 13a30'111" W a
1 0
/ N466d1ibe" N Y6N /
�.4 -'
o
N 14 1728='W L36 �
�---
275.00'
L44 I "�
203.60' ` W'" 1 �x1
I
�N 02'50'17" W
9\
KELLY CLARK I I - �'
�♦ y �.
D.A. 649 PG. 233
PIN 124560349976 € I I
-�lfl'�
` - •�
9SN• s
Ve
1
1 1
1 /
Ir 1 KEL1-YCLARK ZSQo
f D.B. 649 PG. 233 ,
1 PIN 124S0034s976 ,
7S. \
7) \
11
/
0,
/
� /
"II.lr /
EXISTING DIRT ROAD
(OLD WHITEHALL RD) 1 !I
I r /
r ! �
r
/
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II
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E2 COMPANIES LLC
D.B. 5%PC. 620
PIN 1246005131&
AGNESPERRY
0.8. 10;z4 PG. 716
PIN 124560885242
372.79'
NOGGY BRANCH { �♦
PER 9LA➢EN COUNTY 013
I
,MIT BOUNDARY(. \\
� ♦ S r"
`` 7�
EXISTING BOUNDARY LINE
0 400 800 1200
.i = 400'
81,W)FlF1 D FARMS INC
013 des Pc. 576
PiN 12450072,3,W
U
0 ■Nine
ORRIN PERRY
0.3 136 PG. 440
PIN 12450r1961104
JAMES LEWIS
D.B. 489 PG. 367
PfN 1255000049603
CONSTRUCTION SCHEDULE and CHRON❑IIIGICAL SEQUENCE OF LAND
1, Obtain approval of Plan and any necessary permits, and hold
a pre -construction conference prior to commencing any work.
2. Installation of Sediment Trap at end of permanent access/haul road.
3. Clearing, stumping, and construction of permanent access/haul road.
4. Clearing and stumping of access/haul road to Lake/excavation area.
and associated sediment fencing downstream of access/haul road,
5. Installation of Gravel Construction Entrance,
6, Clearing and stumping of first five (5) acres of Lake/excavation
area for truck turn around and stockpile location and associated
7. Construction of Lake emergency overflow swale and erosion control
B. Initial excavation consisting of stripping and removal of topsoil
In stockpile area (within Lake excavation area), Construction of
earthen berm/sound barrier. Creation of vegetated buffer.
9. Stockpiling of 0.5 to 1,0 acres of material for creation of settling/
dewatering area / sediment basin. This area will serve as a self
contained dewatering area / Sediment basin and will have an earthen
dam separating it from future excavation. As the Lake/excavation
grows, the dam will be removed to enlarge the settling/deatering area/
sediment basin to include recent completed excavated areas.
10. Construction of temporary diversion to sediment basin.
11. As 2 to 3 acres of excavation have been completed In the manner
mentioned above, lake banks will be shaped, graded to 5 to 1
slopes, mulched, seeded and landscaped as shown on the plans.
12. The settling/dewatering area will remain as the finished product,
keeping the excavation and pumping to a minimum,
13, Once the Lake is completed, temporary haul roads will be removed and
reclaimed. Temporary erosion control measures will be removed. Access
road to site and earthen and vegetated buffers will remain permanently.
11 All measures to be inspected weekly and after any rainfall
event and needed repairs made Immediately.
2. All seeded areas shall be fertilized, mulched, and re -seeded
as necessary, according to specifications provided, to
maintain a suitable vegetative cover.
3. Sediment to be removed from ditches and Grass -lined Channels
when they are approximately 50% fitted or sediment level is
wIthln 2' of top of ditch bank.
4, Sediment to be removed from behind the Silt Fence when it
becomes 0. 5' deep. Fencing to be repaired as needed to
5. Construction entrance to be maintained In such a manner as to
prevent mud or sediment from leaving the construction site.
Periodic topdressing with 2-Inch stone clay be required.
Inspect after each rainfall and immediately remove all
ob,jectIanable materials spelled, washed, or tracked onto
6. Inspect temporary sediment traps after each period of significant
raInfaIL. Remove sediment and restore the trap to its original
dimensions when the sediment has accumulated to 1/2 the design
depth of the trap. Place the sediment that is removed in the
designated disposal area and replace the contaminated part of the
gravel facing. Check the structure for damage from erosion or
piping. Perlodlcally check the depth of the spillway to ensure it
is a minimum of 1.5 ft below the low point of the embankment.
Immediately fill any settlement of the embankment to stlghtly above
design grade. Any rlprap displaced from the spillway must be
replaced immediately. After all sediment producing areas have
been permanently stabilized, remove the structure and all unstable
sediment, Smooth the area to blend with the adjoining areas and
stabilize properly.
PftfCTlCC.SY3ifYr7PiFTrS Rrtt{.�[1�ICR72Aui
p �,., s
j�BiRft'[tHit `{.� 1.hxkFC2amanE1w11usn!laa P.ttF�r:^nit(aII.Ai'tlt#IYeri•:11ri1Qlda'rdrC31n F6L1!'��1�€
5ulbraoruaExnl� 6e E4at�r3 a�wt €ht ask: s�us,r�ptigurdy sEt-Ititib.,6.
Chosen 1tt¢ a7s3s; M for "i^ plpiny_ and rack dnp€,:xmml Wcrw wM
at+c; ovdr vL*fl< ni (:4 irlrlt tsr gra'4tr) nn4tnmim ,nd:m+Lir'srytme°3iara�v.
€ac"roye the zwture cW any amiable =diff.= i..m. away aficr i14
wwt=btm Site iw d¢8ai parmanenrly ueblflmd smauth tht twia Aire IQ
bind wait the r amdigg a^-- AW iktn %C.. Ati Rvier ¢ud it&W t stx4uld
rcobtt,ved m e us gei4� trr da1n rrmuYal- a• s11s4t:� tr pL�ca€
...............
is dasagW*Pd dlapasz&1 area& and A": '711*wed th fklw into ebonies DR dtausa};e
^r (^/''� p �(
IrM 1 17 �.i R F
CATEGORY
A.� t�R� r/'+ WF..
/H�. ■/++��� ��1■ ACREAGE
AFFECTED i
wsya d+::"s.tl sGvcfi^.ra amsiaraE.
0-1 [ 4 V. T V f^i�f 1 i� L.
References
HAUL ROADS EXISTING
6.63
6,11, Ptan,aramt semhz
HAUL ROADS PROPOSED
0.1A)
6,€2, 8odd€ng
6.13,Trecs,hi e#, Sta¢s,ana de
.....
MINE EXCAVATION
..
2.90
iw. . r:. sa, i-
STOCK RILE AREAS
Q
a,st, s d n tr :13mins
LDISTURSED UNEXCAVATED BUFF[ R5
3
6.55, F'mou¢ r3.a8tax
Nwrb t ollca o¢lxmnitm w1Tse:u�acavaa
TOTAL
5.90
r
P�a�i�k sfrf�wtrr,I�, �r� srdtioru
SEDIMENT BASIN MTH ROCK DAM
Defnttio€1 AlawtteLaLnnkrnr,atk�wa�Wea1"trres m Hahn bEosluad anaNt+
PUrpoSe 3buap wiimxmt as elm 4x"s eaiutt aht ,aril fr 14M off-¢iW wdiuwnta wn in
we¢mx" tom and dmwaiivnys.
i.'i7Pti1t OnS Where 7hemek4-rnw'bruaed indrafasga arena s¢o;xga rwiha µse t�fw uaaparmy
PraCbCeApplieis
sedtn ei rap- T9 01 olRi a(tbc rlasn Lc dn3ud m B Fst am dsarsags axa
should br rsa largnx disst itP asnrce.
7€w it k dam is PFaf �.�d wi,erre s Rabic.. ftrkhm e�nt v Wd be
dfMaA m wnmrLM aril riptap and &�raa are Lradaly AvIJktk_ The A4
mrsi wbment ra w"J.
A rark data should ast he 3oeared In a irtrtrmlltat or permrtIA sft m
Pia Riling A3w'ddfl.%AYl h�'a'med by., kn wr7 en.rdy„hve ds
l°.,Dr:SIiIBi;B3Ri.i$ dts's:apl¢taWve rise sopofste sLnxlure stout::srl;¢ovcrffmw otd.iet cad v,hate
wui biu rxk :s rr Uy:ty4.1aW3 A 16eg wtic "M 4 dmigred to kcsp 1 w
drpth shallow nerd diur Arise w4 shies Sow, III* Iasitie i&m of he root duo
tasust be ravacd1 6 F wa J h�;Pfu z Ilia m10 of WeFW that& the dam so
dal t dcditncri poet cxi[t Gxr. dos€ag t�afi ¢i�wtt. rs P� s)nuld dren
t _.. slowly tk:r s h din gtaael.
Tan ata t ws rB ✓hr rack Mm must f, sagb_" chin hr RV of Iha 1m 1 u
prcwvlt wny +yercr fi� �osrsg i !br3til Stacwl,?t ftgdr fabric atiattW
be par bcti>rtca dr rook atLv== at d i6g soli dais asd abosa,eats. T11ia
yr­d. pmvw& ^piping" n: ttdi n cwo[A faf ft fo413Lasian and kuxrr W
Rack _,U" 6 ¢xtenddawnsdtam 6om th¢;ot often &u %on My Fade=A a
aaslrlctattdistmo r¢ saWiv_ Onw wad W�W, ssosix.
For adtrapbi mnteocsi&nuonsaaoProojne6.61,SelmenrIIcvn.
Design Criteria p.�.�.A1,tplmo(a! t+� Haar
PrwwF 401 Stwr 1pilh y
Maxiaatuna Arain+Yc Arew-: tU x:es
ik1314Uk'-'%SaAiss uStr sgu
5511dnX: 3fi0D catkic ate+.r wwre of a95wioP.rs a"tp
Miaitrgmr Stut3ee Area: 435 sa,are fwt pa ef6 of Qi, F-k udiinw
M1a11nrdm UW Nadu: 11
M:nin}wt llMFth 3S ft41, ; 3 fmi excavakA balow W36&
Maxi.•mnn fkipbk Wattkvnsidn 6 fowl dmo to
i', stcl:nY. otsx, S30" Sp€&Awy
Axh,finwn Drsvate ing III NA
isaaild R.Owd. 3
Ik kgo basin lsftr3 yrars ies
Detn )seigbt--t€mistGro k1 ?ex.
.,
dA&t
_ .Irf"iw R�_.._a......_,.....
•Aroairlca:as&G susP,rure m�acdimr84;
• ttrkic„�k rrxrastl'fio,a. dtsttxifed cress;
• are sattaxlbi¢ Por paastidm aidkswat trai�rYaES �d
•ma;.a#u�:aieitaatty a°ith cansar Yinac ui ides,
fkasia =nlucne---Do Y3#sune of thr ga in shwam 5e as l-xt 36bu -i- is
pfx vmb'" ors dieM4,4 a."cs d"izEng into fht basin, nail ❑rcaar O i £cat
hclLm tea VIDWay crest. A W&mda:t cdat.r'�'.4at CN"AtIo% m 1X
i" :,; a 5fl%fc1€ br 1!?Atd it tied €ieid sthk�
'i'rsrp cf x10 iLAWt iPB lsanei to yatxaaidu =a
adcq�� rlagpielg etfiai>;e�y:
• €sras.d- a atuface Ara or"tl.bi acesff t435 adt�rc !baE) ' c:a 4a�td era t�i¢
the
• ttrcala sfiroaus inPµw 14 lily 6wsia a -ay fran, shs dfto w povtw s9crt
eiLrari €ku;;. iLtt:rs to t24 rwfler,
• pczn'ide µmvus hu?ien lPac6ier ,. d.^-s=,,-_;�;;�,;;�,;i, eon
• axcauatc t.5:ket of thw sited, :.: :....... ... . :::xlr xi:i! s artnimnm
Ci2 t jrAdn.
iiPiilsvay �auHy--7T:e nth �. _„�i ._;u•:afr ine a 4+�-;�x„e
sfonn with rsruxL•r�rrn :i<,r,; '�. ,.I :...-'. - --..,,....�., fs^.ca` onrd of
few. TFe airap nrf€K :: .1 V 1,".;..icy.
�r�nxa�i�-•- /r,
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ISOMETRIC VIEW
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SEDIMENT BASIN / BORROW AREA TO BE DEWATERED
AREA (ACRES) CIF PERACRE REQUIRED TOTAL CF REQUIRED
DISTURBED AREA DRAINING TO BASIN 4.04 3600 14544
AREA (SF)
AREA @ ELEV.116 77020
AREA @ ELEV.80 36710
PROVIDED STORAGE 2047140
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SEDIMENT BASIN / BORROW AREA TO BE DEWATERED
AREA (ACRES) CF PER ACRE REQUI RED TOTAL C F REQU I RE D
DI STURBED AREA DRAI N I NG TO BASI N 1.86 3600 6696
AREA (SF)
AREA @ ELEV.116 18396
AREA @ ELEV. 95 5712
PROVIDED STORAGE 2S3134
TEMPORARY SEDIMENTTRAP#1 / DEWATERING PORTION OF BASIN
DISTURBEDAREA DRAINGTOTRAP=<5ACRES
(DEWATERING AREA TO FUNCTION AS SEDIMENT BASIN)
MIN. TRAP VOLUME = 1,800CF/ACREOF DISTURBED AREA
MIN. TRAP VOLUME 9,000 d
SEDIMENT MUST BE REMOVED TWICE A YEAR
MINIMUM WEIR LENGTH =12 FT.
MAXIMUM DEPTH = 5 FT.
MINIMUM SURFACE AREA = 4, 500
AREA @ ELEVATION 118.5 (OUTLET ELEVATION) 10537 sf
AREA @ ELEVATION 120 12400 sf
0 50 100 150 PROVIDED TRAP STORAGE 22937 cf
11. = 50' AREA @ ELEV. 113.5 ( BOTTOM) 5402 sf
TOTAL PROVIDED STORAGE 62,307 cF
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OI 5

Construction Rond Stabl llzatlon
Specification # 6.80 - Construction Specifications
1. Clear roadbed and parking areas of all vegetation, roots and other
objectionable material.
2. Ensure that road construction follows the natural contours of the terrain If
It Is possible.
3. Locate parking areas on naturally flat areas If they are available. Keep
grades sufficient for drainage but generally not more than 2 to 31
4. Provide surface drainage, and divert excess runoff to stable areas by using
water bars or turnouts (References. Runoff Control Measures).
5. Keep cuts and flits at 211 or flatter for safety and stability and to
facilitate establishment of vegetatl on and maintenance.
6. Spread a 6-Inch course of 'ABC' crushed stone evenly over the full width of
the road and smooth to avoid depressions.
7. Where seepage areas or seasonally wet areas must be crossed, Install
subsurface drains or geotextlle fabric cloth before placing the crushed stone
(Practice 6.81, Subsurface Drain).
8. Vegetate all roadside ditches, cuts, flits and other disturbed areas or,
otherwise appropriately stabilize as soon as grading Is complete (References,
Surface Stabilization),
9. Provide appropriate sediment control measures to prevent off -site
sedimentation.
Maintenance
Inspect construction roads and parking areas periodically for condltlon of
surface. Topdress with new gravel as needed. Check road ditches and other
seeded areas for erosion and sedimentation after runoff -producing rains,
Maintain all vegetation in a healthy, vigorous condition. Sediment -producing
areas should be treated Immediately.
Temoornry Gravel Construction Entrance/Exit
Specification # 6.06 - Construction Specifications
1. Clear the entrance and exit area of all vegetation, roots and other
objectionable material and properly grade it.
2. Place the gravel to the specific grade and dimensions shown on the plans and
smooth It,
3, Provide drainage to carry water to a sediment trap or other suitable outlet.
4. Use geotextlle fabrics because they Improve stability of the foundation In
Locations subject to seepage or high water table.
Maintenance
Maintain the gravel pad In a condition to prevent mud or sediment from leaving
the construction site. This may require periodic topdressing with 2-Inch stone.
After each rainfall, Inspect any structure used to trap sediment and clean It
out as necessary. Immediately remove all objectionable materials spilled,
washed, or tracked onto public roadways.
Temoornry Seedino
Specification # 6.10 - Specifications
Complete grading before preparing seedbeds and Install all necessary erosion
control practices, such as dikes, waterways and basins. Minimize steep slope -
because they make seedbed preparation difficult and increase the erosion hazo,d.
If soils become compacted during grading, loosen them to a depth of 6-8 Inches
using a ripper, harrow, err chisel plow,
Seedbed Preparation
Good seedbed preparation Is essential to successful plant establishment. A good
seedbed Is well -pulverized, Loose and uniform. Where hydroseeding methods are
used, the surface may be left with a more Irregular surface of large clods and
stones.
Liming - Apply line according to Solt test recommendations, If the pH (acldlty)
of the soli is not known, an application of ground agricultural limestone at the
rate of 1 to 1 1/2 tons/acre on coarse -textured soils and 2-3 tons/acres on
fine -textured soils Is usually sufficient. Apply limestone un lformly and
incorporate into the top 4-6 Inches of Boll. Soils with a pH of 6 or higher
need not be limed.
Fertilizer- Base application rates on soil tests, When these are not possible,
apply a 10-10-10 grade fertilizer at 700-1,000 lb./acre. Both fertilizer and
Il me should be Incorporated Into the top 4-6 Inches of Solt. If a hydraulic
seeder Is used, do not mix seed and fertilizer more than 30 minutes before
application.
Surface roughening- If recent tillage operations have resulted In a loose
surface, additional roughening may not be required except to break up large
clods. If rainfall causes the surface to become sealed or crusted, loosen It
Just prior to seeding by disking, raking, harrowing, or other suitable methods,
Groove or furrow slopes steeper than 3,1 on the contour before seeding (Practice
6,03, Surface Roughening).
Plant Selection
Select an appropriate species or species mixture from Table 6,10a, for seeding
In late winter and early spring, Table 6.10b for summer, and Table 6.10c for
fat I.
Seeding
Evenly apply seed using a cyclone seeder (broadcast), drill, cultipacker seeder,
or hydroseeder. Use seeding rates given in Table 6. 10a-6. I Oc. Broadcast seed I . ,9
and hyroseeding are appropriate for steep slopes where equipment cannot be
dr l ven. Hand broadcasting Is not recommended because of the difficulty In
achieving a uniform distribution. Smell grains should be planted no more than I
Inch deep, and grasses and legumes no more than 1/2 Inch. Broadcast seed mu,i
be covered by raking or chain dragging, and then lightly firmed with a roller ,•r
cultipacker. Hydroseeded mixtures should include a wood fiber (cellulose) mulch.
MuIchlno
The use of appropriate mulch will help ensure establishment under normal
conditions and Is essential to seeding success under harsh site condition
(Practice 6,14, Mulching). Harsh site conditions Include,
-seeding In fall for winter cover (wood fiber mulches are not considered
adequate for this use),
-slopes steeper than 311,
-excessively hot or dry weather,
-adverse solls(shallow, rocky, or high In clay or sand), and
-areas receiving concentrated flow.
If the area to be mulched Is subject to concentrated waterflow, as In channels,
anchor mulch with netting (Practice 6.14, Mulching).
Table 6.10a - Temporary Seeding Recommendation for Late Winter and Early Spring
Seeding mixture
Species- Rye(graln), Annual lespedeza (Kobe In Piedmont and Coastal Plain
Rate (lb/acre)- 120
Omit annual lespedeza when duration of temporary cover is not to extend beyond
June
Seeding dates -Coastal Plain - Dec. 1 - Apr. 15.
Solt amendments- Follow recommendations of soil tests or apply 2,000 lb/acre
ground agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch -Apply 4,000lb/ncre straw. Anchor straw by tacking with asphalt, netting
or a mulch anchoring tool. A disk with blades set nearly straight can be used
as a mulch anchoring tool.
Maintenance - Refertillze if growth is not fully adequate. Reseed, refertlllze
and mulch Immediately following erosion or other damage.
Table 6.10b - Temporary Seeding Recommendations for Summer
Seeding mixture
Species -German millet
Rate(lb/acre)- 40
Seeding dates -Coastal Plain- Apr. 15-Aug. 15
Soil amendments -Follow recommendations of soil tests or apply 2,000 lb/acre
ground agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch -Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting
or a mulch anchoring tool. A disk with blades set nearly straight can be used
as a mulch anchoring tool.
Maintenance-Refertillze If growth is not fully adequate. Reseed, refertillze
and mulch Immediately following erosion or other damage.
Table 6.10c - Temporary Seeding Recommendation for Fall
Seeding mixture
Species-Rye(grain)
Rote(lb/acre) - 120
Seeding dates - Coastal Plain and Piedmont -Aug 15 - Dec. 30
Soil amendments - Follow soil tests or apply 2,000 lb,/acre ground agriculture)
Limestone and L,000 (le/acre 10-10-10 fertilizer.
Mulch- Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt,
netting, or a mulch anchoring tool, A disk with blades set nearly straight can
be used as a mulch anchoring tool.
Maintenance- Repair and refertlllze damaged areas Immediately. Topdress with 50
lb/acre of nitrogen In March, If It Is necessary to extend temporary cover
beyond June 15, overseed with 50 Lb/acre Kobe (Piedmont and Coastal PLaln)
Permanent Seetling
Specifications # 6.11 - Specifications
Seedbed Requirements
Establishment of vegetation should not be attempted on sites that are unsuitable
due to Inappropriate soil texture (Table 6. Ile), poor drainage, concentrated
overland flow, or steepness of slope until measures hove been taken to correct
these problems.
To maintain a good stand of vegetation, the soil must meet certain minimum
requirements as a growth medium. The existing soli should have these criteria,
- Enough fine-grained (silt and clay) material to maintain adequate
moisture and nutrient supply (available water capacity of at least .05
Inches water to 1 Inch of Solt).
- Sufficient pore space to pern It root penetration.
- Sufficient depth of Solt to provide an adequate root zone. The depth to rock
or impermeable layers such as hardpans should be 12 Inches or more, except on
slopes steeper than 211 where the addition of Solt Is not feasible.
- A favorable pH range for plant growth, usually 6.0-6.5.
- Freedom from large roots, branches, stones, large clods of earth, or trash of
any kind. Clods and stones may be left on slopes steeper than 311 If they are
to be hydroseeded.
IF any of the above criteria are not met-I.e., If the existing soli is too
coarse, dense, shallow or acidic to foster vegetation -special amendments are
required. The soil conditioners described below may be beneficial or,
preferably, topsoil may be applied in accordance with Practice 6.04, Topsoiling,
Solt Conditioners
In order to Improve the structure or drainage characteristics of a Solt, the
following material may be added. These amendments should only be necessary
where soils have limitations that make them poor for plant growth or for flee
turf establishment (see Chapter 3, Vegetative Considerations).
Peat -Appropriate types are sphagnum moss peat, hypnum moss peat, reedsedge peat,
or peat humus, all from fresh -water sources. Peat should be shredded and
conditioned in storage piles for at least 6 months after excavation.
Sand -clean and free of toxic materials
Vermiculite -horticultural grade and free of toxic substances.
Rotted manure -stable or cattle manure not containing undue amounts of straw or
other bedding materials.
Thoroughly rotted sawdust- free of stones and debris. Add 6 lb. Of nitrogen to
each cubic yard.
Sludge -Treated sewage and Industrial sludges are available In varl ous forms.
these should be used only In accordance with local, State and Federal
regulations.
Species Selection
Use the key to Permanent Seeding Mixtures (Table 6.11b) to select the most
appropriate seeding mixture based on the general site and maintenance factors.
A listing of species, including scientific names and characteristics, is given
in Append i x 8.02.
Seedbed Preparation
Install necessary mechanical erosion and sedimentation control practices before
seeding, and complete grading according to the approved plan.
Ll me and fertilizer needs should be determined by soil tests. Soil testing is
performed free of charge by the North Carolina Department of Agriculture Solt
testing laboratory. Directions, sample cartons, and information sheets are
available through county agricultural extension offices or from NCDA. Because
the NCDA soli testing lab requires 1-6 weeks for sample turn -around, sampling
must be planned welt In advance of final grading. Testing is also done by
connerclal laboratories.
When soil test are not available, follow rates suggested on the Individual
specification sheet for the seeding mix chosen (Tables 6.11c through 6.I10.
Applications rates usually fall into the following ranges,
- Ground agricultural limestone
Light -textured, sandy sollsi 1-1 1/2 tons/acre
Heavy textured, clayey soils 2-3 tons/acre
- Fort lLlzer-
Grasses 800-1200 lb/acre of 10-10-10 (or the equivalent)
Grass -legume mixtures, 800-1200 lb/acre of 5-10-10 (or the equivalent)
Apply lime and fertilizer evenly and Incorporate Into the top 4-6 inches of Solt
by disking or other suitable means. Operate machinery on the contour. When
using a hydroseeder, apply line and fertilizer to a rough, loose surface.
Roughen surfaces according to Practice 6.03, Surface Roughening.
Complete seedbed preparation by breaking up large clods and raking Into a
smooth, uniform surface (slope less than 3,1) Flit In or level depressions than
con collect water. Broadcast seed into a freshly loosened seedbed that has not
been sealed by rainfall.
Table 6. lls - Seeding No. 4CP for,
Well-Dralned Sandy loam to Dry Sands, Coastal Plalni Low to Medium -Core Lawns
Seeding mixture
Species - Centlpedegrass - Rate - 10-20 Ib/acre (seed) or 33 bu/acre (sprigs)
Seeding dotes - Her. - June, (Sprigging can be done through July where water Is
available for Irrigation.)
Soil amendments - Apply time and fertilizer according to soil test, or apply 300
lb/acre 10-10-10.
Sprigging - Plant sprigs In furrows with a tractor -drown transplanter, or
broadcast by hand.
Furrows should be 4-6 Inches deep and 2ft apart. Place sprigs about 2 ft. apart
In the row with one end at or above ground level CFI pure 6. lid).
Broadcast at rates shown above, and press sprigs into the top 1 1/2 Inches of
Solt with a disk set straight so that sprigs are rot brought back toward the
surface.
Mulch - Do not mulch
Maintenance - Fertilize very sparingly- 20 lb/acre nitrogen In spring with no
Phosphorus. Centipedegross cannot tolerate high pH or excess fertilizer.
Table 6.11t - Seeding No. 5CP for, Well-Dralned Sandy Looms to Dry Sands) Low
Maintenance
Seeding mixture
Species Rate (lb/acre)
Pensacola Bahlagrass 50
Serlcea lespedeza 30
Common Bermudagrass 30
German millet 30
Seeding notes
1. Where a neat appearance Is desired, omit serlcea
2. Use common Bermudagrass only on isolated sites where it cannot become a pest.
Bermudagrass may be replaced with 5 lb/acre centipedgrass.
Seeding dates - Apr. I - July 15
Soil amendments - Apply time and fertilizer according to Solt tests, or apply
3,000 lb/acre ground agricultural limestone and 500 lb/acre 10-10-10 fertilizer,
Mulch
Apply 4,000 Lb/ncre grain straw or equivalent cover of another suitable mulch,
Anchor by tacking with asphalt, roving and netting or by crimping with a mulch
anchor Ing too(. A disk with blades set nearly straight can be used as a mulch
anchoring tool.
Maintenance - Refertl Llze the following Apr. with 50 lb/ncre nitrogen. Repeat
as growth requI res. May be moved only once a year. Where a neat appearance Is
desired, omit serlcea and now as often as needed.
Table 6.ily - Seeding No. 7CP for- Gress -lined Channels) Coastal Plain
Seeding Mixture
Spec l es - Common Bermudagrass - Rate - 40-80 (1/2 (b/1, 000 ft )
Seeding dates - Coastal Plalni Apr - July
Solt amendments - Apply Lime and fertilizer according to Solt tests, or apply
3,000 lb/ncre ground agricultural limestone and 500 lb/acre 10-10-10 fertilizer,
Mulch - Use Jute, excelsior matting, or other effective channel lining material
to cover the bottom of channels and ditches. The lining should extend above the
highest calculated depth of flow. On channel side slopes above this height, and
In drat nages rot requ l r l ng temporary linings, apply 4,000 lb/acre grain straw
and anchor straw by stapling netting over the top,
Mulch and anchoring materials must be allowed to wash down slopes where they can
clog drat nage dev Ices.
Maintenance -A minimum of 3 weeks is required for establishment. Inspect and
repair mulch frequently. Refertillze the following Apr. with 50 lb/acre
nitrogen.
Refer to Appendix 8.02 for botanical names
Grnss-Lined Channels
Specification # 6.30 - Construction Specifications
1. Remove all trees, brush, stumps, and other objectionable material from the
foundation area and dispose of properly.
2. Excavate the channel and shape it to neat lines and dimensions shown on the
plans plus a 0.2 ft overcut around the channel perimeter to allow for bulking
during seedbed preparations and sod buildup.
3. Remove and properly dispose of all excess Solt so that surface water may
enter the channel freely.
4. The procedure used to establish grass in the channel will depend upon the
severity of the conditions and selection of species, Protect the channel
with mulch or a temporary 11 ner sufficient to withstand anticipated
velocities during the establishment period (Appendix 8,05),
Maintenance
During the establishment period, check gross -lined channels after every
rainfall. After grass Is established, periodically check the channeli check It
after every heavy rainfall event. Immediately make repairs, It Is particularly
Important to check the charnel outlet and all road crossings for bank stability
and evidence of piping or scour holes. Remove all significant sediment
accumulations to maintain the designed carrying capacity. Keep the grass in a
health, vigorous condition at all times, since It Is the primary erosion
protection for the channel (Practice 6.11, Permanent Seeding).
Outlet Stnbl llzntlon Structure
Specification # 6.41 - Construction Specifications
1. Ensure that the subgrade for the filter and rlprap follows the required lines
and grades shown In the plan. Compact any flit required In the subgrade to
the dark lty of the surrounding undisturbed material. Low areas In the
subgrade on undisturbed Solt may also be filled by Increasing the rlprap
thickness.
2. The rlprap and grovel 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 instatiatl on. Repair any damage by
removing the rlprap and placing another piece of filter cloth over the
damaged area. All connecting Joints should overtop a minimum of I 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
fitter.
5. The minimum thickness of the rlprap 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
6. Construct the apron on zero grade with no overfa It at the end. Make the top
of the rlprap at the downstream end level with the receiving area or slightly
below It.
8. Ensure that the apron Is properly aligned with 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
(Practice 6.10, Temporary Seeding, and 6.11, Permanent Seeding).
Maintenance
Inspect rlprap outlet structures after heavy rains to see If any erosion around
or below the rlprap has taken place or if stones have been dislodged.
Immediately rake all needed repairs to prevent further damage.
Lend Grndlno
Specification # 6.02 - Construction Specifications
],Construct and maintain all erosion and sedimentation control practices and
measures In accordance with the approved sedimentation control plan and
construction schedule.
2.Remove good topsoil from areas to be graded and filled, and preserve it for
use In finishing the grading of all critical areas.
3.Scarify areas to be topsoiled to a minimum depth of 2 inches before placing
topsoil (Practice 6.04, Topsol Ling).
4.Clear and grub areas to be filled to remove trees, vegetation, roots, or other
objectionable material that would affect the planned stability of the flit.
5.Ensure that flit material Is free of brush, rubbish, rocks, logs, stumps,
building debris, and other materials Inappropriate for constructing stable
fl I. is.
6. Place all fill In layers not to exceed 9 Inches In thickness, and compact the
layers as required to reduce erosion, slippage, settlement, or other related
problems.
7.Do not incorporate frozen material or soft, mucky, or highly compressible
materials Into fill slopes.
8. Do not place fl lL on a frozen foundation, due to possible subsidence and
slippage.
9.Keep diversions and other water conveyance measures free of sediment during
all phases of development.
IO.Handle seeps or springs encountered during construction In accordance with
approved methods (Practice 6.81, Subsurface Drain),
11.Permenent(y stabilize all graded areas Immediately after final grading is
completed on each area in the grading plan. Apply temporary stabilization
measures on all graded areas when work Is to be Interrupted or delayed for 30
working days or longer.
12.Ensure that topsoil stockpiles, borrow areas, and spoil areas are adequately
protected from erosl on with temporary and final stabilization measures, including
sediment fencing and temporary Seeding as necessary.
Maintenance
Periodically check all graded areas and the supporting erosion and sedimentation
control practl cos, especially after heavy rainfalls. Promptly remove all
sediment from diversions and other water -disposal practices. If washouts or
breaks occur, repair then Immediately. Prompt maintenance of small eroded areas
before they become significant gullies Is an essential part of an effective
erosion and sedimentation control plan.
STABILIZATION TIME FRAMES,
SITE AREA DESCRIPTION
Perimeter dikes, sureles, ditches and slopes
High Quality Water (HQW) Zones
Slopes steeper than 3i1
Slopes 311 or flatter
All other areas with slopes flatter than 411
NOTE WELL,
STABILIZATION
7 DAYS
7 DAYS
7 DAYS
14 DAYS
14 DAYS
ANY AREAS ON -SITE WITHOUT ACTIVITY SHALL BE STABILIZED WITHIN
15 WORKING DAYS AND AS ABOVE, ALL SLOPES
MUST BE STABILIZED WITHIN 21 CALENDAR DAYS OF CEASE OF ANY
ACTIVITY.
SF Sediment Fence (Silt Fence)
Specification 6.62 - Construction Specifications
MATERIALS
1, Use a synthetic filter fabric or a pervious sheet of polypropylene, nylon,
polyester, or polyethylene yarn, which Is certified by the manufacturer or
supplier as conforming to the requirements shown In Table 6.62b. Synthetic
filter fabric should contain ultraviolet ray inhibitors and stabilizers to
provide a minimum of 6 months of expected usable construct) on life at a
temperature range of 0 to 120 F.
2. Ensure that posts for sediment fences are either 4-Inch diameter pine, 2-Inch
diameter oak, or 1.33 lb/It near ft steel with a minimum length of 4 ft. Make
sure that steel posts have projections to fact litate fastening the fabric.
3. For reinforcement of standard strength filter fabric, use wire fence with a
minimum 14 gauge and a maximum mesh spacing of 6 inches.
Table 6,62b
Specifications For Sediment Fence Fabric
Physical Property Requirements
Filtering Efficiency - 85% (mm)
Tensile Strength at Standard Strength- 30 Ib/lln in (min)
Extra Strength- 50 lb/tin In (mm)
Slurry Flow Rate - 0.3 gal/sq ft/min (min)
CONSTRUCTION
1. Construct the sediment barrier of standard strength or extra strength
synthetic filter fabrics.
2. Ensure that the height of the sediment fence does not exceed 18 Inches above
the ground surface. (Higher fences may Impound volumes of water sufficient to
cause fallure of the structure.)
3. Construct the filter fabric from a continuous roll cut to the length of the
barrier to avoid joints. When jol hits are necessary, securely fasten the filter
cloth only at a support post with overlap to the next post.
4.Support standard strength filter fabric by wire mesh fastened securely to the
up slope side of the posts using heavy duty wire staples at least 1 Inch long,
or tie wires. Extend the wire mesh support to the bottom of the trench.
5. When a wire mesh support fence is used, space posts a maximum of 8 ft apart.
Support posts should be driven securely Into the ground to a minimum of 18
I nches.
6. Extra strength filter fabric with 6ft post spacing does not require wire mesh
support fence. Staple or wire the filter fabric directly to posts.
7. Excavate a trench approximately 4 Inches wide and 8 Inches deep along the
proposed line of posts and upslope from the barrier (figure 6. 62a),
8. Backflll the trench with compacted soil or gravel placed over the filter
fabric.
9. Do not attach filter fabric to existing trees.
Maintenance
Inspect sediment fences at least once a week and after each rainfall. Make any
required repairs Immediately.
Should the fabric of a sediment fence collapse, tear, decompose or become
Ineffective, replace It promptly. Replace burlap every 60 days.
Remove sediment deposits as necessary to provide adequate storage volume for the
next rain and to reduce pressure on the fence. Take care to avoid undermining
the fence during cleanout.
Remove all fencing materials and unstable sediment deposits and bring the area
to grade and stabilize It after the contributing drainage area has been properly
stab l Ized
Sediment Basin w/ Rock Dnm (see nddlttonnl notes hind specs)
Specifications # 6.63 - Constructl on Specifications
1. Site preparations-CLear, grub and strip topsoil from areas under the
embankment to remove trees, vegetation, roots and other objectionable material,
Delay clearing the pool area until the dam Is complete and then remove brush,
trees and other objectionable materials to facilitate sediment cleanout,
Stockpile all topsoil or Solt containing organic matter for use on the outer
Shell of the embankment to fact litate vegetative establishment. Place temporary
sediment control measures below the basin as needed,
2. Cut-off trench -Excavate a cut-off trench along the centerline of the earth
fill embankment. Cut the trench to stable soil material, but In no case make It
less than 2 ft. deep. The cut-off trench must extend Into both abutments to at
least the elevation of the riser crest. Make the minimum bottom width wide
enough to permit operation of excavation and compaction equipment but In no case
less than 2 ft. Make side slopes of the trench no steeper than 1.1. Compaction
requirements are the some as those for the embankment. Keep the trench dry
during backfllling and compaction operations.
3.Embankment-Toke fill material from the approved areas shown on the plans. It
should be clean mineral soil, free of roots, woody vegetation, rocks and other
objectlonab le material. Scarify areas on which flit Is be placed before placing
flit. The fill material must contain sufficient moisture so It can be formed by
hand Into a ball without crumbling. If water can be squeezed out of the ball, it
Is too wet for proper compaction. Place flit material in 6 to 8-1 nch
continuous layers over the entire Length of the fill area and then compact it.
Compaction may be obtained by routing the construction hauling equipment over
the fill so that the entire surface of each layer Is traversed by at least one
wheel or tread track of the heavy equipment, or a compactor may be used.
Construct the embankment to an elevation IOS higher than the design height to
allow For sett Ling.
4. Conduit spillways -Securely attach the riser to the barrel or barrel stub to
make a watertight structural connection. Secure all connections between barrel
sections by approved watertight assemblies. Place the barrel and riser on a
firm, smooth foundation of impervious soil. Do not use pervious material such
as sand, gravel, or crushed stone as backflll around the pipe or anti -seep
collars. Place the flit material around the pipe spillway in 4-Inch layers and
compact It under and around the pipe to at least the same density as the
adjacent embankment. Care must be taken not to raise the pipe from firm contact
with its foundation when compacting under the pipe haunches.
Place a minimum depth of 2ft, of hand -compacted backflll over the pipe spillway
before crossing It with construction equipment. Anchor the riser In place by
concrete or other satisfactory means to prevent flotation. In no case should the
pipe conduit be Installed by cutting a trench through the dam after the
embankment Is complete.
5.Emergency spillway -Install the emergency spillway In undisturbed soil. The
achievement of planned elevations, grade, design width, and entrance and exit
channel slopes are Critical to the successful operation of emergency spit l )way.
6.Inlets-Discharge water into the basin In a manner to prevent erosion. Use
diversions with outlet protection to divert sediment -laden water to the upper
end of the pool area to Improve basin trap efficiency (References, Runoff
Control Measures and Outlet Protection).
7.Erosion control -Construct the structure so that the disturbed area Is
minimized Divert surface water away from bare areas. Complete the embankment
before the area is cleared. Stabilize the emergency spillway embankment and all
other disturbed areas above the crest of the print ipal spillway immediately
after construction (References, Surface Stabilization).
8.Safety-Sediment basins may attract children and can be dangerous. Avoid steep
side slopes, and fence and nark basins with warning signs if trespassing is
likely. Follow all state and local requirements.
Maintenance
Check sediment basins after periods of significant runoff. Remove sediment and
restore the basin to Its original dimensions when sediment accumulates to one-
half the design depth,
Check the embankment, spillways, and outlet for erosion damage, and Inspect the
embankment for piping and settlement. Make all necessary repairs immediately.
Remove all trash and other debris from the riser and pool area.
NOTE WELL:
EROSION CONTROL DETAILS AND SPECIFICATIONS ARE AS PER THE "EROSION
AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL' OF THE STATE OF
NORTH CAROLINA, DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES,
LATEST EDITION. PRACTICE NUMBERS REFER TO THIS MANUAL.
CONTRACTOR IS RESPONSIBLE FOR MAINTAINING A COPY OF THIS MANUAL
ON -SITE AND ENSURING THAT ALL SUPERVISORS ARE FAMILIAR WITH THE
STANDARDS AND SPECIFICATIONS SHOWN IN THE MANUAL AND ON THE PLAN.
NOTE:
DETAILS SHOWN ARE TYPICAL OF INSTALLATIONS REQUIRED BY COLUMBUS COUNTY.
THIS SHEET DOES NOT PURPORT TO SHOW ALL REQUIRED CONSTRUCTION DETAILS, BUT
RATHER SERVES AS A GUIDE. THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL
COUTY AND STATE CODES AND CONSTRUCTION STANDARDS.
Temoornry Sediment Trno - continued
Protection from piping - Place filter cloth on the foundation below the riprap
to prevent piping. An alternative would be to excavate a keyway trench across
the rlprap foundation and up the sides to the height of the dam.
Weir length and depth - Keep the spillway weir at least 4 ft long and sized to
pass the peak discharge of the l0-yr storm. A maximum flow depth of 1 ft, a
minimum freeboard of 0.5 Ft, and maximum side slopes of 211 are recommended.
Weir length may be selected from Table 6. 60a shown for most site locations In
North Carolina.
Table 6, 60a
Design of Spillways DrQlnage Area Weir Length(,)
(acres)
(ft)
1
4. 0
2
6.0
3
8. 0
4
10.0
5
12. 0
(1) Dimensions shown are minimum
Construction Specifications
1. CLear, grub, and strip the area under the embankment of all vegetation and
root mat. Remove all surface soil Conte i nl ng hl gh amounts of organic matter and
stockpile or dispose of It properly. Haul all objectionable material to the
designated disposal area.
2. Ensure that fill material for the embankment Is free of roots, woody
vegetation, organic matter, and other objectionable material. Place the flit in
lifts not to exceed 9 Inches and machine compact it. Over flit the embankment 6
Inches to allow for settlement.
3. Construct the outlet section In the embankment. Protect the connection
between the rlprap and the soil from piping by using filter fabric or a keyway
cutoff trench between the riprap structure and the Solt.
(Place the fitter fabric between the rlprap and SOIL. Extend the
fabric across the spillway foundation and sides to the top of the
dams or
(Excavate a keyway trench along the centerline of the spl llway
foundation extending up the sides to the height of the dam. The
trench should be at least 2 ft deep and 2 ft wide with 1-1 side
slopes,
4. Clear the pond area below the elevation of the crest of the spillway to
facilitate sediment cleanout
5. All cut and flit slopes should be 211 or flatter.
6. Ensure that the stone (drainage) section of the embankment has a minimum
bottom width of 3 ft and maximum side slopes of 111 that extend to the bottom of
the spillway section.
7, Construct the minimum finished stone spillway bottom width, as shown on the
plans, with 2,1 side slopes extending to the top of the over filled embankment
Keep the thickness of the sides of the spillway outlet structure at a minimum
of 21 inches. The weir must be level and constructed to grade to assure design
capacity.
8. Material used In the stone section should be a welt -graded mixture of stone
with a d50 size of 9 inches (class B erosion control stone is recommended) and a
maximum stone size of 14 inches. The stone may be machine placed and the smaller
stones worked Into the voids of the larger stones. The stone should be hard,
angular, and highly weather -resistant.
9. Ensure that the stone spillway outlet section extends downstream past the
toe of the embankment until stable conditions are reached and outlet velocity is
acceptable for the receiving stream. Keep the edges of the stone outlet section
flush with the surrounding ground and shape the center to confine the outflow
stream (References, Outlet Protection).
10, Direct emergency bypass to natural, stable areas, Locate bypass outlets so
that flow will rot damage the embankment.
11. Stabilize the embankment and oil disturbed areas above the sediment pool
and downstream from the trap immediately after construction (References, Surface
Stabl Li zatl on).
12. Show the distance from the top of the spillway to the sediment cleanout
level (one-half the design depth) on the plans and mark it In the field.
Maintenance
Inspect temporary sediment traps after each period of significant rainfall.
Remove sediment and restore the trap to Its original dimensions when the
sediment has accumulated to one-half the design depth of the trap. Place the
sediment that is removed in the designated disposal area and replace the
contaminated part of the gravel fact ng.
Check the structure for damage from erosion or piping. Periodically check the
depth of the spillway to ensure it is a ml nlmum of 1.5 ft below the low point of
the embankment. Immediately fill any settlement of the embankment to slightly
above design grade. Any riprap displaced from the spillway must be replaced
Immediately,
After all sediment -producing areas have been permanently stabilized, remove the
structure and all unstable sediment. Smooth the area to blend with the adjoining
areas and stabilize property (References, Surface Stabilization).
PRELIMINARY PLAN
MINING PLAN FOR
DONALD SMITH
ROSINDALE SAND, LLC
CARVERS CREEK TOWNSHIP, BLAOEN COUNTY, NORTH CAROLINA
REV. NO. REVISIONS DATE
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DATE: 07-30-21
OWNER: ROSINDALE SAND, LLC
1402 CANAL COVE ROAD
LAKE WACCAMAW, N.C. 28450
HANOVER DESIGN SERVICES, P.A.
[AND SURVEYORS ENGINEERS B tAND PLANNERS
1123 FLORAL PARKWAY
WILMINGTON, N.C. 2MO3
PHONE: (910) 343-BD02
_*
Date:
07-30-21
sceie:
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Dmwn:
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Chedcetl:
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Prcled No:
i5623
Shoat No:
4
5
at

WETLAND LINE TABLE
LINE
BEARING
DISTANCE
L200
S 70029'47" E
46.59'
L201
N 06011'32" E
97.91'
L202
N 45037'07" E
35.64'
L203
N 23034'27" E
87.22'
L204
N 18014'22" W
53.52'
L205
N 44041'28" W
70.15'
L206
N 42054'32" W
58.96'
L207
N 22031'28" W
63.82'
L208
IN 44007'47" W
72.20'
L209
N 08005'09" W
69.11'
L210
N 36028'49" E
33.02'
L211
N 3702940" E
51.57'
L212
S 88032'17" E
29.88'
L213
N 80027'57" E
48.73'
L214
N 76054'50" E
61.75'
L215
N 87011'31" E
46.82'
L216
I S 18033'48" E
65.80,
L217
S 44016'19" W
40.51'
L218
S 12014'23" W
60.53'
L219
S 45045'36" E
105.04'
L220
S 73036'47" E
47.25'
L221
N 69058'04" E
49.04'
404 Wi TLAND LINE
sn' nICTf
NO 1�
N
NG
/ 404 WETLAND LINE
UPLANDS
L205
BEGIN WETLAND FLAGGING
N.C. GRID NAD 83
N :256662.01
E:2145517.19
NOTE: WETLANDS AS SHOWN WERE FLAGGED BY LAND MANAGEMENT GROUP IN APRIL OF 2021
WETLANDS WERE SURVEYED BY HANOVER DESIGN SERVICES, PA THE DAY OF FLAGGING.
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PRELIMINARY
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L-2876 =
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DATE:
Sheet No:
5
Of: 5