Complete Alamance Mine Map Set

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SNOW CAMP , NC 27349
ALAMANCE COUNTY , NC
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COVER SHEET
C101 EXISTING CONDITIONS
C201 MINE MAP
C202 PLANT AND STOCKPILE PLAN LOCATION
C203 MINE PLAN SCALE : N TS
C204 RECLAMATION PLAN
C301 OVERALL SEDIMENTATION 8c EROSION CONTROL PLAN
C301 A — C301 E 1 " = 60 ' EROSION CONTROL PLANS
Z14 � PlLl r` o nii � ( SHEET DELETED )
C303 ENTRANCE ROAD PLAN AND PROFILE SITEDEVELOPER/OWNERLL
C 3 0 4 DRAINAGE AREAS ALAMANCE AGGREGATES, LLC Pavveire
C305 PARKING AND ENTRANCE ROAD DETAILS
dbyparnership.
C401 SITE DETAILS
�' 615 St. George Square
C402 SITE DETAILS :. 22052 ,
Suite 300
Winston-Salem , NC 27106
C403 SITE DETAILS 336-842-4065"'�G`AST' ps�'
C#0430
C 5 01 EROSION AND SEDIMENT CONTROL DETAILS REVISION NO: DATE: DESCRIPTION: ( a b e I I a p c . c o m
1 3/31/20 NCDEMLR COMMENTS&SHEET PROJECT NO: 2190335
C502 EROSION AND SEDIMENT CONTROL DETAILS C302DELETED

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M I T I PAR IT OttNDAR't�
-T'EPIM -' �. �`,.-
_. ! I f ✓ sD-. // //� - 1 4 / GENERAL NOTES
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I ~bANPlY7i.SNART� 1. EXISTING SITE FEATURES,TOPOGRAPHY,AND PROPERTY DATA FROM INFORMATION PROVIDED BY COE FORESTRY AND
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/ // SURVEYING.ALSO,SITE PLAN INFORMATION OBTAINED FROM DRAWING SEALED BY CHRISTOPHER FAULK,PLS DATED y
1�1,\\ ` 1/10/18. STREAM SURVEY FROM NEIL PRESLAR DATED 2/19/19. e Square
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,° _. 615 St. George uare
/ a �- -- -. 2BABLE PERMITS A N APPROVALS PRIOR TO BEGINNING WORK
AND PLA
} / I� r _ V . OBTAIN ALL APPLICABLE
3. CONTRACTOR IS RESPONSIBLE FOR VERIFYING ALL EXISTING FEATURES PRIOR TO START OF CONSTRUCTION.CALL 811. Suite 300
// \ \� t�\� \ '6 Winston-Salem NC 27103
o _ // f , r J / \ ate` \ / �._ N�o �, \� v ` / \ ANY DISCREPANCY IN LOCATION,SIZE,OR DESCRIPTION OF EXISTING FEATURES SHOWN ON THE PLANS SHALL BE
BROUGHT TO THE ATTENTION OF THE ENGINEER IMMEDIATELY. 336-842-4065
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4. THE CONTRACTOR WILL BE REQUIRED TO TE ALL WORK NECESSARY TO PROVIDE SUITABLE CONNECTIONS WITH ALL C#0430
/ j 1 f/r ROADS,STORM DRAINS,AND UTILITIES ENTERING THIS PROJECT.
PI�: 10Ik70� " / / / 1 '� 6�� l// I I / label lapc.com
dA D sin n r H- / / j I \ T / / / ti� r \ ` 5. NO SUBSURFACE INVESTIGATIONS OF DETERMINATION HAS BEEN MADE BY THE ENGINEER.THE CONTRACTOR SHOULD
(/q� `I" / l (( / !/, - 6 \ \ ( �R �\\ \ /� J �PPA T � //� / ! g0� MAKE HIS OWN INVESTIGATION AS TO THE SUBSURFACE CONDITIONS.
` \ \ \ ti� g1o1 S 1fi 01 J (/ ! f r 6. CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING,RELOCATING,AVOIDING,AND PROTECTING ALL EXISTING UTILITIES
6� \\ \ 2 I W� � v'eIGT AND FEATURES ON SITE. ii T �II
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oR oN�OF\ \ \ \ Fa a f -• � 7. PRIOR TO FINAL ACCEPTANCE THE CONTRACTOR SHALL ULTIMATELY BE RESPONSIBLE FOR ENSURING THE SATISFACTORY �`�� CN GARO �i��
D2733 t.g '--_ -- - � -. / COMPLETION OF THE TOTAL PROJECT. � O •F<;.SS1
IOn- ' �PAMELA�A A sEY-REv�C"1RUSf!' -� '"`"` '\ 8. CONTRACTOR SHALL BE RESPONSIBLE FOR THE COORDINATION OF THE REMOVAL AND/OR RELOCATION OF ANY EXISTING
6"0�\ ,Q p4,' ��� '\N UTILITY POLES,GUY WIRES,AND/OR ANY OTHER EXISTING FEATURES AS REQUIRED. S
a } / 9. CONTRACTOR MUST CONSTRUCT ALL WORK UNDER THE SUPERVISION OF A QUALIFIED GEOTECHNICAL FIRM.
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// I \ `\ \ _� r / / f/ \�\ ! I (/( / / (�t g3 \ \\\ \ \ - ® ^ A /r/ /� / 10. ALL WORKMANSHIP AND MATERIALS TO CONFORM WITH NCDOT SPECIFICATIONS AND DRAWINGS UNLESS OTHERWISE�jm OF a��A9 •. GtNti ,. W
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I �11 / / } 1, 1 ROBERT A SA/GlETI PROPOSED BUILDINGED
/N / ' I \\\ EXISTING MINOR CONTOURS
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AGGREGATES, LLC
PID: 102765
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NO: I DATE: I DESCRIPTION:
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REVISIONS
0 PROJECT N UMBER:
/
2190335
Do 152
DRAWN BY:
KCG/ATC/BWS
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ENV a 610.69' t`} 1 / �-^ (/I {/ I/ (C\
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\\\\ 610 �\ ��URB" P N��6U09 \ ` ` \ / �^ / B�\�\ AiA� I B, ISSUED FOR: CONSTRUCTION
\�,04` eo)s / l / 1 t I / ��ll ( /� / / \ a ' DATE: 4/9/20
\ \ DRAWING NAME:
00 ` \�- p ` v� \`\\\Gr0 ~\ \ �`--• 1\ } �... ..1- /l .___ r/•--"� '�,/ / .'�,, m_ ! / �".�, �'� / / l / °f'� r',�� _,.,, ''_., ` t C I t ./// ~__.. .J ` \ 4\-- / J j
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PID: 1702
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EXISTING CONDITIONS
PID\ \ \ \ \ / // / a \ /// r j \ ,/ r/ / \`\ DRAWING NUMBER:
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939 Burke Street, Suite H
!( f t r ( If J J y '. __.T _ f•. _ -Mo Le Lo oTIO Ft_ _,eF \ ff - ( THE INITIAL CRUSHING PLANT WILL BE A MOBILE PLANT THAT WO4StrJ6OSaIi�, NC 2 101
f ��f f Plo._iozzts /' fir' f(_^. P OR RTIy � _,'R /M - 85
,r G 9 -�'. cb WILL BE ABLE TO MOVE THROUGH THE PHASES OF THE QUARRY
A� /Cr r / / PA 1- �� E/ �S: T/BOUNDAR} .,m DIp PHASES 1 THROUGH 4 OF THE MINE ARE SHOWN. C#0430
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6 61SHOWN IN ORDER TO SERVE THE PHASE 1 EXCAVATION SITE.
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f / i ET p H x\50'WL ti ® --HOURSF
BILE �� t - �FO� g 1� \i� � . �.... `W.,^ ,....... .. "O 0 C MINE PERIMETER __ ....... ...__....-_. _.... __
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! \ 11` �C1 5 ` 1( � ,,,� 9NROttIt7cW \ �o• 'T ` \` ',rr•'f//' 50' UNDISTURBED BUFFER
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( .. Hr" b'a y^"' �" `\x rf �. S,�,r,{ / ",� r /'! .-,..J 100' STRUCTURE SETBACK BUFFER - - - - - - - - -
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PtRM,wtNT s RAafi \ N E ♦r r � � ,r",r " 125' OPERATIONS SETBACK�\ R STOCK IL b1= PLANT �\ A U'�
( - I ( PHASE 4 ROCK \ ��.�
/ �' '`'• _---^^ f � - '``" "'°• " ^" `^.`^°� "' N-- 0 SSING/AR A I � �- � r r) � v - / Pto: taz 77_„" r" „--' `w'�- ^ � t ` ,r' PROPOSED SKIMMER BUFFER
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EXCAVATION J �. �\ xl � I � --
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DISTURBED AREA
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FL00 ( ' . _. _ , -" , ,' 1/� _.._.-;1'. _,_. -�.�,. ALAMANCE
f f ( Q \ fr, I { PHASE 2 ROCK APPROXIMATE IMPACT
j \ \ I { Y }' "`\ �4 j" •' ( W _ CATEGORY ACRES
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Im 1 y •'+..,'. t L / h f (13 LAJTE ). -r _.
j/ �,..-,-600@ !� i I 1 +�� l \„` ,./�' ♦� t ` d1-- , �\, _ __. - ._- ,. ° STOCKPILE 25.86�r 1 ,. ,� ..' .. � PTO: toz7s
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r /f ' °\eta - 1 -' �N'�k - _ f� _, f __. _ Mr. Chad Threatt VP
( PHASE 1 ROCK wnsTEPILFs 13.01
uNpl BEo6 / AR EIS` �, .�� L EXCAVATION � � - APPROX. � �-, �^ " A � f
(\ (1 q 1 \ �E ({I �. '^� ,. ,,1 ,, NO
WELL \\ �Of^ TM� p PROCESSING/HAUL ROAD - - - 5.24
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NOTES FROM SITE PLAN SEALED'- ""•, `w `\„` ( / '- " + /t ^\ w / /f ^ff. r MINE EXCAVATION 28.29
BY CHRISTOPHER FAULK, PLS ON 1/10/18: �� ___ .. fir,"v"D �,.� - " l r c
Q A Q[xcEt"""0 70• V R /
" y r--� HOUSE �
_ ,"f' WETLAND` ,-"' r'' rr ,... �. a ",,,� _..._/' OTHER (SIiOP, EMERGENCY ACCESS, FENCE, ETC.)
PROPOSED IMPERVIOUS AREA = 5.0 % - e ` I �, ` = a 36 T r �. 7.50
,.-. I ,.,._ .`._ - " " , ti..,.. ' jF t '� .'... r r r` , TOTAL IMPACT
- PONDS TO BE FILLED ONLY WITH NCDEQ APPROVAL � ""` ( -- � `'. - " •` r %'T ? }\ r -��a 4, � 86.76
PER 401 / 404 PERMITTING _S /
- AREA OF OPERATIONS IS BUFFERED A MINIMUM OF = f ( QP - _ - } \ /nq4��j
,
125' FROM PROPERTY LINESp e4 r n1 oON
- TEMPORARY LIGHTING WILL BE USED FOR ANY REQUIRED - y � _� • ", � ^-� U DISNRBED
NIGHT OPERATIONS \ BUFFER f�rM1�/ �� - / \`�`
f : f MINING LIMITS
- FINAL DESIGN AND PLACEMENT OF STORMWATER CONTROL -` n` iR so' I NG 0
"".�-- „„.. „r" "-.... ...,.,` E ( r+ UNDIsr-rUReED EXISTINGSDW! LING 4� 1 1 t -� ` 4 r,,'
DEVICES TO BE CONFIRMED BY APPROVED SEDIMENT AND •,�`•'^• ` '� Q ''- �,� - CI, ,BUFFER
EROSION CONTROL PLAN f b 0 �,.-- soli TING APPR X. LOCATION "f' �' ` '` ( j t "
/ - sob l e€Db MA 4. , , , wEnAND. Bep' _ ! f t OVERBURDEN SLOPE 2:1
BERMS TO BE CONSTRUCTED 8' +/- HIGH AND PLANTED } _, ._ A MINING LIMITS 8'H x 50'W BERM
WITH LOBLOLLY PINE ppz697 ` z /" f♦yR 0 ED/ -`" ^ B,U ERZ,, SEE BERM DETAIL 2
IANrF JACI(spN, N ( ,�' S�F '-•3_ 10: 102747 ,. „ � {w +,^ ' 1l f / l ,i •f EXISTING GROUND
- LOBLOLLY PINES TO BE "DOUBLE-STAGGER" PLANTED PER ( ( r' (•` ( r / 20' SAFETY BENCH _
/ I) ` 5 Ei�SSI f `PR P SED.vw \ f POND 1. \._I Y .r' /� / 6Dc7" /
SCREENING GUIDLINES DESCRIBED IN ALAMANCE COUNTY -♦ \ f < f" ` ` -
ORDINANCE .1 / � � r / O
O / f / \ APPROXIMATE WATER LEVEL AFTER RECLAMATION
- ALL VEGETATIVE SCREENING MUST BE VERIFIED BY VISUAL �, - -"' , \ '` _ r / """50' v, -- \` `' j(0�5 \ ; r' r rr - j,• rf" (pAj )
''� r ( 7 /r UNDISTUR-BED - „" c�,„ ..--' `5�30,�- t
INSPECTION PRIOR TO ISSUANCE OF AN OPERATIONS PERMIT 1-- uy I �\ OFFICE \ , ,1 - BUFFER_ = .ti.,, �14A,,` ` / f f _ f
FOR THE FACILITY. PLEASE CALL 336-570-5053 TO \ B IYd Camp
+
�� ` a. _ r 725,01P ION L /,/ /I , PI •mzbNez 6f / J VARIES Snow Liam Mine
/ r .__ pID: dz7z `� !
SCHEDULE AN INSPECTION. \ wa PROPOSE / rr - SETBAC / D�okA -A enH ER / r / p
INTENT-TO-CONSTRUCT PERMITS ARE VALID FOR (1) YEAR \ \ \ I j u �o n PROPOSED } EPPCO AR / r' / /f / \ d f J P "'', / / =' r / f (50' MAX
V l y �ti '� "/ r // _..__ HAUL ROAD
FROM( E DATE OF ISSUANCE. / a w /" ✓ PARKING + �' r 0
- TWO 2 COPIES OF A POST DEVELOPMENT ASBUILT PLAN \\\ ` 4 f
ARE REQUIRED TO BE FILED WITH THE ALAMANCE COUNTY \. m t ( :.�.._; `~, l �r� r 50
/ ( -
f .,..�'^•..,, ,, �"' ter' r• / Ga ,r- 1, __ !'r' Ff%j'/ / ,.�^ (TYP•)
PLANNING DEPARTMENT AT THE COMPLETION OF CONSTRUCTION \ HO Sit J t /r `" . ` r �/ / ' s I H 1 V SLOPE
AND PRIOR TO ISSUANCE OF AN OPERATIONS PERMIT. n v r /" VARIES
r RM 1 t l \ \ / l _._. Le / / J / f �f!^ �r r / / f 270'-332'
- AN OPERATIONS PERMIT WILL BE REQUIRED PRIOR TO BEGINNING } \ . ` ` -H ` i _......../ " '"' r, / ,/ tr, 6,r 1('l"` 0_/� .' .- Q,/� f/" r"--'"\,•ti•.� �"'- .- `� 'f /// % r'�" 15' BENCH
OPERATION OF THE FACILITY. PLEASE CALL 336-570-4053 /ff
REVISED 12
FOR ADDITIONAL INFORMATION. / / f/ . ` 4 10/10/20 5'SETBACK PER OWNER
- OPERATIONS PERMITS ARE VALID FOR THREE (3) YEARS. ff f / r 1/ f / p ` i / ! j ''l �o l tL / ( /f/ j J \ REVISED WELL LOCATION/PERMIT
PLEASE CONTACT THE ALAMANCE COUNTY PLANNING /
DEPARTMENT AT 336-570-4053 TO RENEW THIS PERMIT / f �I ` - a - \ �! ! ry — �'I r ( 1 f t ` 3 7/07/20 BOUNDARY PER OWNER
LIGHTING TO BE INSTALLED PER LIGHTING PLAN DETAIL t �`` ' - "" b - PID: 2 3/31/20 NCDEMLR COMMENTS
PRIOR TO EXPIRATION.
SUBMITTED WITH SITE PLAN � � � f_ � i `�\` � i ��� 1 f ! ti� � � � � Ik , `---� ^ � � ,r/ r � ` \ "f/ PIT FLOOR ADDITIONAL STREAM INFO-ALAM.AGG.
`` ..____ �_ .-- -, /,� " .. �^--. \� {{ /r/ " (VARIES 1N WIDTH) 1 1/20/20
- ACCESS WAYS, WALKWAYS AND PARKING AREAS SHALL \ k _ ` , MONITORING' WELL r r' �� 2Jf I) ' 2 „ \ J �( f / �l l &LAND QUALITY COMMENTS
N0: DATE: DESCRIPTION:
BE LIGHTED ADEQUATELY BY LIGHTING FIXTURES WHICH ID: io \ _. -
SHALL BE SO INSTALLED AS TO PROTECT THE STREET' A 0 C��LL -1'"--,frA,xv_e,oe t ` �..,,,, - `2 ,,.._.,... f l( °f _ f f Rp �/ ,/ a ( ' 1 �4 { ( (t / ( f \,,, f _
A "t�R1 1 12 ' /�( G!(�j � ` t ` ( MINING AREA SECTION "A-A" REVISIONS
\ k xv o a 4.WSW-4 m 1 e0s
AND NEIGHBORING PROPERTIES FROM DIRECT GLARE OR \ M' a• f \ ti \ SCALE: 1"=100'
} -..
�_ _B w s ` MONITORING`" LL /" / , ` t / J f O J PROJECT NUMBER:
HAZARDOUS INTERFERENCE OF ANY KIND. APPLICANTS _ i - / a q /
` \� � ' _ , a 4 p,r f J. ��/ l l � _ \� �O � }/) � t f (f f/E r /f / � 1 � `,, 2190335
ARE ENCOURAGED TO USE LIGHT SHIELDING AND FIXTURES . r�_s,o,,7.MAI R/�7F T/1 \ r / F A > f I / / I ( � ( / ° ` `'' THE INITIAL & ULTIMATE CLEARING LIMITS
THAT ARE APPROVED BY THE INTERNATIONAL DARK SKY \ _- a",mL H r / `:/ /,f , x 4 j / / ' �/ Y l rf 1 ARE THE SAME. THE OVERBURDEN SOIL
ASSOCIATION (IDA) AS THESE FIXTURES CONSERVE ENERGY, \ EN Ate ry R - r 2 r Z� / F"` - / r 4 DRAWN 8Y:
o _
f / ' ! KCG/ATC/BWS
/ m ', J" " ! / 1 THROUGH 4 AT ONE TIME. THE PHASES BERM
�\, � ,, GE + RX A�q `r„/r r' � ,r ,'� WILL BE REMOVED OVER ALL THE PHASES 18
REDUCE MONTHLY COSTS, AND MINIMIZE THE IMPACT OF s r r + ."" r" f r HAVE BEEN SHOWN FOR ROCK EXCAVATION
LIGHT POLLUTION ON SURROUNDING PROPERTIES. w � ( I { l ` \ IZiry O�q rr/ f l REVIEWED BY:
t`^ �� r / !" f/ ` ( BERM SLOPE 2H:1V I
n s \^� c DoH f PAS
(HIDO SECTION 4, ITEM Q \ \ �� O � �kIC Fary / rr r l �� � � } � � DELINEATIONS.
- 125' OPERATIONAL SETBACK TO INCLUDE 50' SCREENING vO '��- r'--�.,� sc r r // ,�,� - /// t t j / ,✓ ISSUED FOR:
_ 0 ♦. # , R 12 ' OPEf3ATl NAL 'a c' f/ 8 TALL
BUFFER REQUIRED BY HIDO SECTION 4 ITEM G. NATURAL �� ` m \ \ yj � 4 alo:i � r r " /� r - f l /J % CONSTRUCTION
VEGETATION TO BE SUPPLEMENTED AS DESCRIBED IN HIDO ASK" k T oM MoTr /f/ I / y / i f 50' WIDE
APPENDIX "A" PER SUBMITTED SCREENING PLAN SUBJECT TO �� -- "� `�, �a { 2 r / / / AT BASE
/ / f } l / / DATE:
APPROVAL OF PLANNING DIRECTOR v --- �� -- -' �' A � / - a ' ,� ( ( f ' r, ." w_ / / f ,� �- SEE DETAIL 2 403 FOR ADDITIONAL
a STRUCTURES NOT TO EXCEED 40' IN HEIGHT ABOVE NATURAL j TT l F f f if �' O f lA`"K / ! f /` 7 / 10/12/20
— i ✓ F4 ., INFORMATION
y (
/ r r L, j i f
y ELEVATION GRADE PER HIDO SECTION 4 ITEM B BERM 1 DETAIL
DRAWING NAME:
L - BUILDING ON PID #102726 TO BE REMOVED SUBJECT TO �r„,. NOT TO SCALE
PROPER DEMOLITION PERMITS _
EL FINAL APPROVAL AND OPERATION PERMITS WILL BE 1 f r ; �( �
CONTIGENT UPON RECIEPT OF FINAL STATE AND FEDERAL .PIo�i7os9s
cwRls RIN9EY�' Q
APPROVALS f-} k` i r,)
3 - HISTORIC PROPERTIES TO REMAIN OR MADE AVAILABLE t _._ ^" r" f AMANDA IVEY ODD / - �� \ �o ?qz -'- � , f, ) �� ` ` t � � � 1 ( w � r, - �
tJ'/0501 60D,,,
FOR RELOCATION UPON CONSULTATION WITH HISTORICAL { G f + s} q ro 1 l f l ,r' Z
CD
PROPERTIES COMMISSION • / f / �, AA' `r I - f z
_. ( - - DD' ( MINE MAP
BERM
BERM SLOPE 2H:1V
OVERBURDEN
T a SLOPE 2H:1 V 8' TALL
m UNNAMED TRIBUTARIES TO REEDY BRANCH 50' WIDE
AND UNNAMED TRIBUTARIES TO CANE CREEK
E FLOW THROUGH THE SITE. REEDY AND CANE DRAWING NUMBER:
CREEKS ARE IN THE CAPE FEAR RIVER BASIN SEE DETAIL 2/403 FOR ADDITIONAL
LjEj
3
ARE CLASSIFIED AS WS V AND NUTRIENT INFORMATION
z-,zl u? SENSITIVE WATERS BY NCDWR MINE BERM DETAIL 2
NOT TO SCALE
C AN-= Aff-M
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S.D.O. #28ASIN
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SKIMMER BASIN #27/ POND #1
S.D.O. #27 o N i WATER ELEVATION (WE) — 594'
\ \ l BOTTOM — 579' (DETAIL 4/C401) ) } } \
I �^ — V APPI�X
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\ SKIMMER BASIN #26/ \ LIT,
S.D.O. f 26 ! ^� \ \ / / ! J �777 SKIMMER BASIN #9/
S.D.O. #9
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6c7lAIL\ POND #2 \ \ \ \ } SKIMMER BASIN #3/
�� \ \ \ \ \ \ \ \ \ BOTTOM — 569' \ / / S.D.O. #3 / / / / 1 2 3/31/20 NCDEMLR COMMENTS
ADDITIONAL STREA
I / / f / / r / / ti 1 1/20/20 &LAND QUALITY COMMENTS LAM.AGG.
\ \ \ \ N0: DATE: DESCRIPTION:
\ SKIMMER BASIN #29/ /
^SKIMMER BASIN #24/ / / I , \ \ \ \ \ \ �� S.D.O. #29 O PROJECT NUMBER:
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S.D.O.SDo #24 \— � i f M ' � ` \ \ � � � \ 9 m ( ++ \ \ �_ ,/!/...� �'�� j ��� j � �//� � / 2190335
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DATE:
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LaBeRa
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_�/- ---__ LEGEND ^ \ f N/O
� � �RO G�JE . ` WILLTHE IBE ABERTOHING MOVEtTHROUGH THE PHASESNT WILL BE A EOF�THE QUARRY. 615 St. George Square
x ~ � _ PROPERTY LINE — / PHASES 1 THROUGH 4 OF THE MINE ARE SHOWN. 1 Suite 300
0 R EXISTING BUILDING \ l DURING THE START UP OF THE QUARRY, THE CRUSHING PLANT Winston-SaIem NC 27103
: \ j / \ \ MAY INITIALLY BE IN THE GENERAL LOCATION OF PHASE 2 AS PROPOSED BUILDING � � �. / i SHOWN IN ORDER TO SERVE THE PHASE 1 EXCAVATION SITE. 336 842-4065
` X / _ MINE PERIMETER ! ab 4aOC.com
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PROPOSED SECURITY FENCE —X—X—X—X— \ \ I / / J �> ",• { \ \ \
�I Sj / ^ ~ l f __-_- 50' UNDISTURBED BUFFER \
TA. 20.,'00 _ 100' STRUCTURE SETBACK BUFFER ' _._ r ' / / 1 / \ \fie \ �� pP, T —1
/ ( 111 yl -y It111ttIeBp
125' OPERATIONS SETBACK BUFFER \ _� " ' ✓ f �� ? \\ �� �N MA
PROPOSED SKIMMER BASIN
_— 22052
\ in I I \ DISTURBED AREA - : �, / / �/ / I / r^
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PHASE 4ALAMANCE
_ \ \ t \ f ( I I 1 / -®- • '"" \ \ \ ` ROCK EXCAVATIONAGGREGATES, LLC
PHASE 3
ROCK EXCAVATION ' Mr. Chad Threatt, VP
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ROCK EXCAVATION I I ' \ ` ` \ ~_ -- . - --
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PHASE E 1/
�\ \ �• \ , \ �\ \ \ 1 , ` ." - / ✓ ✓ - / ` r \ I 2 03/31/20 NCDEMLR COMMENTS
\ l� \ \ \ \ \\ \ ROCK E X C AVAT I 0 N / I \ `- �' /' , Q ✓ f / / d ry ADDITIONAL STREAM INFO-AIAM.AGG.
{ ...... 1 1/20(20
/..� \ / � 1 ``. \ � \ �\ O\ / -'^" / � I \ '!-.""` ,.•,, ,,,,, rs�� "' _ SW-.,2 ,, --'` `~~- "`•" &LAND QUALITY COMMENTS
- MONITORING ELL/ / \ / /
✓ / M0 IT 1NG WE < / NO: DATE: DESCRIPTION:
ROAD
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PROJECT REVISIONUMBER:
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2190335
\ \ \ \ \ \ \ \ \ \ 640 // f \ _ s lJ ' /� r — f j r° r , '/ G DRAWN BY:
/
/ —' REVIEWED BY. PAS
O N - / I / !`""
x ISSUED FOR:
\ ��\ i✓ \ \ \ _ '� / I __ /" / /��k i/ rf CONSTRUCTION
DATE: 4I$I20
DRAWING NAME:
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ais st. George Square
Suite 300
Winston-Salem, NC 27103
RECLAMATION PLAN 336-842-4065
HALF OF OVERBURDEN SOIL TO BE SOLD DURING MINE OPERATION. OTHER HALF OF OVERBURDEN TO BE C#0430
YID-. 10L 1 FaN APPA �� R ERTY LINE/ PERMIT BOUNDARY USED TO FILL THE TAILING PONDS, ALL SKIMMER BASINS, AND THEN EQUALLY SPREAD AND COMPACT I a be I I a pc.c o m
P Dpv1NY R7SNART GAS LINE EASEMENT >_ DID: 102733 ANNY R STUART REMAINING SOIL OVER GRAVEL PLANT AND STOCKPILE AREAS.
PROP E NE,> DREEK o
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00 PROPER n LINE =O; F .!L
� uuNQAfty aNOTE: - S 9
No, 102700 Q X PE21M z THE TEMPORARY CROSSING & ALL OTHER EROSION CONTROL MEASURES WILL BE REMOVED AND THE 2•
SNOW CAMP BAPTIST CH sEWR1ry THE
ASSOCIATED AREAS WILL BE ADEQUATELY STABILIZED BY SEEDING & MULCHING. °
FEN
Nc ETRAN TRANSMISSION LINE (CROSSING WILL NOT BE REMOVED PRIOR TO COMPLETION OF WORK ACROSS THE STREAM UNLESS ANOTHER
2 W ACCESS IS PROVIDED).
OVERBURDERN SOIL PORTION70 I X X—X_ °
/ X� PID: 102798
PAMELA A CAUSEY REVT)C TRUST
STOCKPILE AREAS a
GRADED AND Q _HOUSE —r -I
SEEDED aIt� ��"
W/ C ' "PID:10278/
Q/ AN J LEE HEATHER RATCLIFFE
PID: 102699 \ 4rG
DEBORAH P. SANDERS q
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PLANT %a'°�"� i 010
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.J HOUSE L_� Ate/ T'vN,1, 8� Tq SEEDED
FM le=W ROpFR�\q�Rk eF/1'y _ NO: ,o276B
PID. 102770
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PID:
1 9D MILLS SUPPLY — o
RECRE TIONAL oaoo AGGREGATES, LLC
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APPROX. LOCATION I �-
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PID: 102726 I J
PID:102762
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2 6/26/20 CROSSING NOTE MODIFIED
\ %a 102M � 1 3/31/20 NCDEMLR COMMENTS
mc� ' NO: DATE: DESCRIPTION:
Gy J j REVISIONS
HA SNOW CAMP, L1C + s k p PROJECT NUMBER:
02608
PID: 4 BYRD 2190335
I \ + Q DRAWN BY:
k�\ /N0�''AFs .,j v 2 I REVIEWED BY:
lk y� KCG�PAS BWS
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\ �NconoN _� ISSUED FOR:
\ \x `"'F � k CONSTRUCTION
a N Q PID: 102602
THOMAS MCDERMOTT DATE: 6/26/20
y \+ i DRAWING NAME:
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RECLAMATION PLAN
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160 0 150 300 4I0
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/ , TOTAL DISTURBED AREA = 86.76 ACRES
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: ' EROSION CONTROL SEQUENCE NOTES
SKIMMER BASIN
NO GRADING, CLEARING, OR OTHER 1. OBTAIN GRADING EROSION CONTROL PLAN APPROVAL AND PERMIT. 615 St. George Square
LEGEND #2/S.D.O g
\ ��=�� , f �/ l ^ � ' r\� CONSTRUCTION ACTIVITIES TO OCCUR 2. CONTACT EROSION CONTROL INSPECTOR TO ESTABLISH A PRE CONSTRUCTION CONFERENCE AND INSPECTION Suite 300
EXISTING PROPERTY LINE - - s ��/� cp \ ��� R I �I ! Hap WITHIN THE 50' UNDISTURBED STREAM scHEDOLE. NC 27103
°\ \ �� / f �� �� { T� M 1 I \ BUFFER UNLESS PRIOR WRITTEN Winston-Salem,PERIMETER SECURITY SKIMMER BASIN //
PROPOSED PROPERTY LINE \ FENCE TO CLEAR SPAN SELF INSPECTION-----EFFECTIVE OCTOBER 1,2010,PERSONS CONDUCTING LAND-DISTURBING ACTIVITIES,
\ 11 / f��/ / ,•-�\� / #3/S.D.O #3 G THEIR336-842-4065
/ / \` _JURISDICTIONAL AREA J , / , I APPROVAL IS GIVEN. HEGNS INSPECTION (1)ACRE MUST
ON APPROVED TFORMSPROJECT AFTER EACH PHASE OF THE PROJECT,AND DOCUMENT
EXISTING BUILDING � / y
STONE OUTLET (TYP.) C#0430
� J SEE DETAIL 7/C502 /f'� ! THE PHASES ARE AS FOLLOWS: IabeIIapC.COm
PROPOSED BUILDING Q // /� = s i I SKIMMER BASIN #1 2 l �� 1.INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES.
MINE PERIMETER /% _ SKIMMER BASIN / ) 1��// C-�/�� _#16/S.D.O. #16 /S•D.0 #�' CONTRACTOR TO PROVIDEjCURLEX I \ Ss` 2.CLEARINGANDGRUBBINGOFIXISTINGGROUNDCOVER.
PROPOSED SECURITY FENCE -x-x-x-x- /�� �/ 1 1 / �IXCELSIOR MATTING ACROSS THE \ \\
\ f�j/// // LIMITS OF ENTIRE LENGTH & WIDTH OF ALL \ ( 3.COMPLETION OF AM PHASE OF GRADING OF SLOPES OR FILLS.
TEMPORARY DIVERSION DITCH TD�� Jf` &C. // / / DISTURBANCE' X/ SKIMMER BASIN SLOPES 3HAV AND STEEPER
�..- 4.INSTALLATION OF STORM DRAINAGE FACILITIES.
\ / #12/S.D.0 #12 / \ \� r 'STONE OUTLET (TYP.) � \\� �o�gNCARp��., •
TEMPORARY SILT FENCE / / // I / „ /� \� \ \ SKIMMER BASIN ��� SEE DETAIL 7/C502 \ 5.COMPLETION OF CONSTRUCTION OFDEVELOPMENT.
\ \ / #29/S.D.O. #29 \ _ . q
/ \ i \ PERIMETER SECURITY ) ? 9
PROPOSED ENERGY DISSIPATOR ® ` / / / \\\\\ L O 6.ESTABLISHMENT OF PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION.
-+ UMfTS OF \` ", � ` ,...i \ FENCE TO CLEAR SPAN -•9'9
• /1 // / / / \ \ JURISDICTIONAL AREA
TEMPORARY CHECK DAM DISTURBANCE i i _
� / f \ / \ - .� _ 3. CLEAR SITE ONLY AS NECESSARY TO INSTALL INITIAL EROSION CONTROL MEASURES AS FOLLOWS: 52
/� _ LIMITS OF - -P a
MINE HAUL ROAD ` /h ( / Q y \ 1 fi \ \ 1 _ DISTURBANCE A.TEMPORARY CONSTRUCTION ENTRANCE/EXIT AT CLARK ROAD. FN ��
f / / // �A �� /TAILINGS POND #2 ,/ �/ B.THIS SITE HAS TEMPORARY SKIMMER BASINS AND SEDIMENT BASINS AS SHOWN. ���A,9''• GI NE ,. 0+
DISTURBED AREA F> �/ /�/� / ! j / \ / ? (, i (, ' ........ s
y 500'x100' ` // ---�j. \ C.TEMPORARY DIVERSION BERMS
F 9 i �' \ D.TEMPORARY SILT FENCING AND STONE OUTLETS
O I Ax
STONE OUTLET ! t � WASH �1/h. I �lt(� /_- TEMP. SEDIMENT \ E. SEED EMBANKMENTS AND DISTURBED AREAS OF DEVICES(INCLUDING°CLEAN WATER DIVERSION)UPON `TEMP. SLOPE DRAIN / ` ! � � SKIMMER BASIN PLgM• ` SKIMMER BASIN FENCE (TYP.) - COMPLETION OF CONSTRUCTION.SEE GROUND STABILIZATION CRITERIA BELOW FOR MORE INFORMATION. O
#28/S.D.0 #28 f 1 I#11/S.D.O. #11 SEE DETAIL 2/C501 / \\ 4. BEGIN CLEARING,GRUBBING,AND STRIPPING OF SITE AS REQUIRED.
\ STONE INLET PROTECTION �. / / / I/ j 1 I l / J D \, /_ �`` I I \ ' O / '- , EARTHEN-MATERIAL STOCKPILES ON-SITE FOR LATER DISTRIBUTION AND/OR REMOVAL.AREAS DEDICATED FOR
1 TEMP. SEDIMENT / MANAGEMENT OF LAND CLEARING AND DEMOLITION DEBRIS,CONSTRUCTION AND DOMESTIC WASTE,AND
S.D.O. STORM DRAINAGE OUTLET / / / / / FENCE (TYP.) \ _�// \`W t� -q�� \ ' TAILING$ POND #1/ �I \� / \ �\ HAZARDOUS OR TOXIC WASTE SHALL BE LOCATED AT LEAST 50 FEET AWAY FROM STORM DRAIN INLETS AND T
SEE DETAIL 2/C501 \ v / Z \��ti -L\ , 500'x100' /-� ( , /- 1 SURFACE WATERS(UNLESS IT CAN BE SHOWN THAT NO OTHER ALTERNATIVES ARE REASONABLY AVAILABLE),AND
Cn
, WITHIN AREAS PROTECTED BY EROSION CONTROL MEASURES.
�/ BASIN J 50' UNDISTURBED J�� '
{ l.- I ✓ /� ` \\ #9/S.D.0 #9 600 -� ,BUFFER \ ( I 5. BEGIN SITE GRADING.MAINTAIN EROSION CONTROL DEVICES IN ACCORDANCE WITH THE MAINTENANCE PLAN.
C ) / INSTALL ADDITIONAL EROSION CONTROL MEASURES AS REQUIRED.
SKIMMER BASIN m \ h j / LIMITS OF \ )+ / „� Z / 6. INSTALL STORM DRAINAGE SYSTEM AND UTILITIES.STORM PIPING MUST BE INSTALLED TO THE POINT WHERE IT
�-z� DISTURBANCE \ \ , LIMITS OF �/ / \ J ENTERS EACH DEVICE.COMPLETION OF PIPING WILL ONLY BE ALLOWED ONCE THE SITE HAS BEEN DEEMED STABLE BY
#22/S.D.O. #22 / ' \\ / �9 / \
/ / \ \ DISTURBANCE J, � ITHE NSTALLED.
CONTROL INSPECTOR.INSTALL PROTECTION AROUND ALL INLETS AS STORM DRAIN SYSTEM IS
SKIMMER BASIN #10/S.DO. \ \ OF 65.00 LF15" RCP \ / ` �� 50' UNDISTURBED O �� /�� / ! // \\
_ (STORM DRAINAGE OUTLET) #10 \ ` ` _
SKIMMER BASIN BUFFER
_ 4 / (((qqq� \. /
SKIMMER BASIN R /' #13/S.D.�13, I 1 ` ) I TIMEFRAME TIMEFRAME
/ /� P LIMITS OF // / / // #6/S•D•0 #B \ / O �- \ DESCRIPTION STABILIZATION STABILIZATION
EXCEXCEPTIONS
111fff(/J Av.Ot'+- DISTURBANCE (1 J ! �� /1// , O / / \- \ EXCEPTIONS
\ �i �--. _ -- ©2019 LaBella Associates
yam\ \ \ \\ V\ \ G P `._.- / I / I tj O,n I- \ PERMANENT DIKES.
// 1 ' f / /-r1, /---� \ / / r A / -\ \ SWALES,DITCHES,& 7 DAYS NONE
\I / Qjp• �'p`� �_ / N' �.__ 1¢ \ SLOPES
I-� LIMITS OF \ \\ O -/ J 6 1 /
�f1/� f P- / DISTURBANCE \� \\ 1 / / J 1 I I / \ \ \ / ` / \ 31 LENGTH&ARE NOT STEEPER
/ J SKIMMER BASIN SO, SKIMMER BASIN, SLOPES STEEPER 7DAYS FAN2.1,ARE IO'AL LESS
WED
/ / / #15 \.D.O 15 C, S \ ( � `#23/S.D.O. #23 / /y' \\\\ THAN 14 DAYS ALLOWED
I � // I / x I � '�\ 1 p � 4� 'wry �` SLOPES 3:1 OR 16 DAYS 7 DAYS FOR SLOPES>50'
TEMP SEDIMENT / �\� � 0/� / / \ \ \ NO�\\ FLATTER IN LENGTH ALAMANCE
FENCE P. O
\ Cy�� Jf� ALL OTHER AREAS
/ SEE DETAIL 2/C501 �G Qom\ -�63 \ 1 1 // I� S OPO ^ 6O o6 FLWITHSLOPEER THAN 41 14DAYS NONE AGGREGATES LLC
SKIMMER \ \ \ \ �` 0 f // °o ` i 7
J 1 i \ 6 S DLO' TEMPORARY DIVERSION i i _ //� / o / 0, 1
-� STON�OUTLET (TYP.) ( '` SKIMMER _ # / ' \ \ DITCH (TYP.) 50' UNDISTURBED ,s Mr. Chad Threatt VP
SEE DETAIL 7/C502 BASIN #6 / / 1 /
\ q ��r(r Q ^#5/S.D.O. \\ \ \/ I '� SE AIL 3/C502 f / �f/ / l ' BUFFER 72-
/ LIMITS OF / #5 670 _ 1 / / / �/ / ��.C 1 1 SKIMMER BASIN / 7. PRIOR TO THE CONTRACTOR DEMOBILIZING FROM THE SITE(AT APPROXIMATELY 45 DAYS PRIOR TO
J f SKIMMER BASIN / / / �j , - J ! I 1 f / #21/S.D.O. #21. )
/ \ DISTURBANCE / -� SKIMMER BASIN #7/ 27 /�614 � (/i � DEMOBILIZATION),THE FINANCIAL RESPONSIBLE PARTY(OR THEIR DESIGNEE WILL NOTIFY THE ENGINEER AND THE
� / / P�`y i•''/ LEAVE THE SITE.AN ON-SITE
70.00 LF S•D•0 #7 �, / / 1 !( �� / // '// I /j-'- -/- "'�� `!1 / � `O,o� `�c -'/ /616 \ 1 INSPECTION WIDESIGNATED LL
CONDUCTED PRIOR TO THE CONTROL INSPECTOR OF LEAVE SAVE DATE BY THE HEIR ANTICIPATEDENGINATE EER AND/OR THE DESIGNATED EROSION
SKIMMER BASIN\J / �\0\5" RCP •J / / /-- /616- \ + CONTROL INSPECTOR TO MAKE CERTAIN ALL ACTIONS ITEMS HAVE BEEN ADDRESSED BY THE CONTRACTOR.
#14�D.i #14^ PROP. / / - / /� m
to
KEYSTONE STREAM CROSSING SKIMMER BASIN •50' UNDISTURBED / , / 8. CONTINUE TO MAINTAIN EROSION CONTROL MEASURES UNTIL VEGETATIVE COVER HAS BEEN ESTABLISHED
LIMITS OF'1 WALL STRUCTURAL PLATE ARCH #24/S.D.O. #24 BUFFER ' / ( �620 / / OVER ALL DISTURBED AREAS AND SITE HAS BEEN STABILIZED.REMOVE EROSION CONTROL MEASURES ONLY
DISTURBANCE METAL 24' SPAN x 10'-4" / 11 `_ j l I l O / /�/:%/� AFTER FINAL INSPECTION AND APPROVAL BY ENGINEER.
i SKIMMER ` RISE BRIDGE CULVERT BY \\ 01
p\ -fin. SKIMMER BASIN / / f o f o 000 0
BASIN \\ CONECH CONSTRUCTION / / 0� O EROSION CONTROL MAINTENANCE PLAN(CONTRACTOR MUST INCLUDE MAINTENANCE IN BASE BID)
\ PRODUCTS d '� #20/S.D.O. #20/ _ I / (0 rQ )
S 64.00 LF #4/S.D.O #4 cp / 1. INSPECT ALL SEDIMENTATION AND EROSION CONTROL DEVICES FOR STABILITY AND FUNCTION EACH WEEK
/ OF 15" RCP \ '� \\\\ \ / / // / AND FOLLOWING EACH RAINFALL EVENT.
LIMITS OF / MINING LIMITS /� O \61g /
DISTURBANCE ` f
�� \ \ \ ` ✓ \\ \\ \\\�- / / 1-11 / / Sw/1 -616 / -� / C2.APACITY,REMOVE SILT/SEDIMENT FROM TEMPORARY DEVICES WHEN ACCUMULATED VOLUME HAS REACHED 50%
/ / ( ` �, SKIMMER BASIN / ( / / / MONTTORIN04ELL
f t _\\ \ #26/S.D.O #26 / \ (\ / / 61¢ -
LIMITS OF EMP. CHECK DAM - I \ (`" / ,.s- / ✓ TEMP. SEDIMENT / / 3. REMOVED ACCUMULATED SILPSEDIMENT FROM BEHIND TEMPORARY SEDIMENT FENCE WHEN DEPTH
DISTURBANCE `\ (TYP.) -�� \ l / / /O/ 129.73 LF OF FENCE (TYP.) / E'�2 1 EXCEEDS APPROXIMATELY 0.5'.REPAIR AND REPLACE SILT FENCE AS NECESSARY.
SEE DETAIL 4/C501 \ 1 65 `I 18" RCP SEE DETAIL 2/C501 (\\ �0/
48.03 LF \ LIMITS OF / \ \ // \ r Q 4. SEED AND STABILIZE TEMPORARY DIVERSION BERMS IMMEDIATELY AFTER CONSTRUCTION
\ DISTURBANCE LIMITS OF ( / INCLUDING'CLEAN"WATER DIVERSION BERMS.RE-GRADUREPAIR BERMS AS REQUIRED.
OF 15" RCP / \ \\ \ I 1088J / I
1 / DISTURBANCE \
5. CONTRACTOR SHALL APPOINT AN ON-SITE INSPECTOR AND MAINTAIN RECORDS OF INSPECTIONS IN Snow Camp Mine
/ \\126.90 LF ACCORDANCE WITH THE PROVISION OF THE GENERAL NPDES STORMWATER DISCHARGE PERMIT FOR
\\\ \ 1 l f f \ \ \ \ O\ CONSTRUCTION ACTIVITIES.
SKIMMER BASIN \ / �\ `OF 15" RCP
#18/S.D.O+#18 \ \ / ` \ \ �/ 1 \ 70.00 LF OF I FENCE SEDIMENT ONITORING WELL 1 \\ \\ & q C
1 \ \ \ , �/ 15" RCP ( ) DETAILED CONSTRUCTION SEQUENCE
FES 2 \ 1 1 \ �-- SEE DETAIL 2/C501 \\9 • yp
LIMITS OF / ( ( r 1 1 / / --� \\ t \ \�� / f SKIMMER SBASIN \ ' `�9i� s�\ � 1. CONSTRUCT THE TEMPORARY SURGE STONE CONSTRUCTION ENTRANCE/EXfT OFF CLARK ROAD.
DISTURBANCE / lI PROP. SEPTIC / �o /{:1 ! 1 / \ \ \ \ �A \
80' OF/ / FIELD o / \ \ \ ((Si #19/S.D.O. #19 2. INSTALL SILT FENCE AND STONE OUTLETS FROM CLARK ROAD TO THE SOUTH SIDE OF THE STREAM
24" RCP j ' r j , // `/ f \ \ . \ / \ \ LOCATED AT 16+87.SILT FENCE TO BE LOCATED ON BOTH SIDES OF THE ROAD AND SOUTH BANKS OF
TEMPORARY / TEMP. SEDIMENT \ t/ \ \\ \ � y /� �/ \ \ \� \ \ �\ \ THESTREAM.
FES 1 CONSTRUCTION , / ' ` FENCE (TYP.)
A ENTRANCE/EXIT 1 \ { SEE DETAIL 2/C501 1 , SKIMMER BASIN \ $0. (/ / I \ // A�� ' \ \ LG�\ \ 3.INSTALL SKIMMER BASIN 6 AND SKIMMER BASIN 7 AND THEIR ASSOCIATED TEMPORARY DIVERSION
r tO j t 25 MINE STR �0/ST(/ I J \ �.- '� / / ` \ DITCHES AND SLOPE DRAIN(IF CALLED FOR). 3 6/26/20 REMOVED REFERENCE TO C302
j �/ SKIMMER BASIN \ ! tom # / / Fq� R@ / ` \ / \ \ 2 3/31/20 NCDEMLR COMMENTS
#17/S.D.0 (STIR; \ \ \ \ /� / DEWATERING / eUFO \ TEMP. SEDIMENTS / /
rn DRAINAGE OUTLET j S.D.O 25 tii" eR \ r--� 4. INSTALL IMPERVIOUS CLEAN WATER DIKE AND BYPASS PUMPING SYSTEM AS SHOWN ON SHEET C402. ADDITIONAL STREAM INFO-ALAM.AGG.
STONE PIPE INLET - OT#17 \ \\ \ # ' FENCE (TYP.) 6 / \� �� / I N�� \\ \ INSTALL THE PERMANENT 54°PIPE AND ENDWALLS AT STATION 16+87. 1 1/20/20 &LAND QUALITY COMMENTS
PROTECTION+ \ /- ^�' �_63 SEE DETAIL 2/C501 i -/ \\ \ / / / I 0 NO: DATE: DESCRIPTION:
lSY5. APPLY 10'STONE BASE LAYER TO ENTRANCE ROAD AND COMPACT.cLIMITS OFe. REVISIONS
CZ __-f D�URBANCE l !� \ / \ \ W pB 00 /� \ PROJECT NUMBER:
�,+ \ \ \ \ \ 1 , � `� \ \� //,,...� ` ` �� j / •• 6 \ 6. BACKFILL.PREPARE SLOPES AND OTHER DISTURBED AREAS AND STABILIZE.
Z WSW_¢ \ \ \ JJJ/ \ _� \� \ \ >� / // ✓/ "� �\ �/ /� �� I v D �'� \ 7.INSTALL SILT FENCE AND STONE OUTLETS ALONG NORTH SIDE OF THE STREAM. 2190335
D ONITORING WELL \ ` w r
1 \ (// / F DRAWN BY:\ 1 , \ \\ \ l \ \ O� / j \ , \ ' / / `LING _ / ---_-_/ // 8.INSTALL SILT FENCE AND STONE OUTLETS AROUND THE EXISTING STREAM BUFFER AND PROPERTY
/ O 1 �r 1 1 \ \ \ 1 \ \ \ \ \ APPROX. LOCATION / `- \ \ \ \ I ( ( / \\ 1p�• ST C / I' CD
Z = D \ i ( ( f -^�\ BOUNDARY(WHERE DENOTED ON PLANS). INSTALL SKIMMER BASINS 4,5,13,11,3,2,1,12,8,AND KCG/ATC/BWS
O \ �\ ( \\ \ \ \ \ \ \ \ > P�R X` \ \\ \ \ r ---SCR \ \ -,�S_F p� '_ ` 10 AND THEIR ASSOCIATED TEMPORARY DIVERSION DITCHES AND SLOPE DRAINS(IF CALLED FOR). REVIEWED BY: PAS
11 ` \ \ -� \ \` \ \ C \ H \ \ \ 1 `/(Y J�� \ ` \ 9. PLACE ALL SILT FENCE AND STONE OUTLETS DOWN SLOPE OF ALL PROPOSED BERMS. ISSUED FOR:
ID
m m I = \ \ \ / J oR\TH ASSS LL op,1 CONSTRUCTION
0 / 1 I �•--- =\\ \ \\ \ \ / \ t ` \ \ \ Jy\ \ \ Fy'i0 10. BEGIN GRADING THE INITIAL MINE AREA,MOVE AND PLACE MATERIAL FOR BERMS. PLACE AND
Z O 1 r III �.^ \ \ \\ J \ \ ` 'WC/OTp L_ �`-"•� �_ \ �F,?j COMPACT MATERIAL FOR PLANT AND STOCKPILE AREA. ALL BERMS SHALL BE CONSTRUCTED AND
/ o t _ _` \ , I / �C 6 \\� \ -\\� ` \\�= i/ / / ` 1 \ ` �f�',Y �\ � \ `- � STABILIZED WITHIN 1 YEAR OF STARTING MINING ACTIVITIES. DATE: 6/26/20
a 1 , \ \ \ \ \\\ �- _�"�630� �� ! �. / /1Y - \ \ !i \ 11. CONSTRUCT TAILINGS PONDS BEFORE MINING OPERATION BEINGS. DRAWING NAME:
12. SEED AND MULCH ALL AREAS THAT ARE NOT COVERED WITH ASPHALT OR STONE.
_\ �� \\��� STORMWATER SEWER CALCULATIONS AND DESIGN TABLE 13. STABILIZE ALL CHANNELS AND SLOPES WITH MATTING AS NOTED ON THE PLANS.
s cm _
o / � \\�\ t \ / _\ \\\� /��� 1 1 \ INLEfQBASEDON4"/HOUR OVERALL
�7 \ \ ^7-_ STORM RETURN PERIOD: 10 Yr for TOC=511Tinutes
"-aC - TYPE INLET INLET TOTAL GRATFI FROM TO APPROR PIPE
`� Nv �•� \ \�\ �� �// ` \\\\ \\� 6�- - ---,/ GRATE AREA Q AREA I C Q REW INV. INV. LENGTH SLOPE N D(THEO.) SIZE PIPE SEDIMENTATION &
RIM FROM TO (Ac.) CFS (Ac.) (in/hr) CFS THROAT 00 (ft) (ft) % (inches) (inches) MATERIAL SEEDING NOTE: EROSION CONTROL
`- N/A FES t FES 2 7.91 9.49 7.910 7.04 0.30 16.71 N/A 612.59 611.79 80.00 1.00 0.013 21.40 24 RCP SEED MIXTURE,SEEDING RATE,AND SOIL AMENDMENTS TO
> f / l \ \ �, / \ / �,,,_� �� \ 840.16 DI1 DI2 0.45 0.90 0.450 7.04 0.50 1.58 632.50 630.25 626.95 126.90 2,60 0.013 7.39 IS RCP SBE APPROVEDUBMITTED
OWNER
PLAN
J / ��\•�- �� tee• \ 840.16 DI 2 FES 13 0.19 0.61 0.64 7.04 0.80 3.60 629.20 626.95 624.48 48.03 5.14 0.013 8.86 15 RCP SUBMITTED TO OWNER AND ENGINEER PRIOR TO m CyNA O \ `� / ��� --� \ -� _,� \ APPLICATION. SEED MIXTURE TO BE A MIXTURE OF RED
;, •( QgQ"' / \ _� --� \ \ i•� \\ \� �--- '�-/17 \ .Y'. N/A FES 3 FES 4 4.24 5.09 4.240 7.04 0.30 8.95 N/A 600,24 597.31 64.00 4.58 0.013 12.73 15 RCP CLOVER,CREEPING RED FESCUE,AND A GRAIN,SUCH AS,
•••"' N/A FES 5 FES 6 2.51 3.01 2.510 7.04 0.30 5.30 N/A 630.50 628.00 70.00 3.57 0.013 10.96 15 RCP OAT,WHEAT,OR RYE.
N/A FES 7 FES 8 5.52 6.62 5.520 7.04 0.30 11.66 N/A 617.75 616.12 129.73 1.26 0.013 17.92 18 RCP
d I ��• / �- -�` \ \ \ \- // p � � �Q N/A FES 9 FES 10 0.31 0.37 0.308 7.04 0.30 0.65 N/A 611.00 607.00 65.00 6.15 0.013 4.51 15 RCP DRAWING NUMBER:
n 111 \ > `C
/ \J � / �yy�� \ � N/A FES 11 FES 12 3.24 3.89 3.240 7.04 0.30 6.84 N/A 609.60 606.92 64.00 4.19 0.013 11.71 IS RCP
oc 0 P j100\ f00 200 700�00 l { ��7�0.,� \ N/A FES 13 FES 14 7.58 9.10 7.580 7.04 0.30 16.01 N/A 607.20 606.40 32.00 2.50 0.013 17.74 18 RCP
w YYY"'"0 D>.1 y -� ! / �-�' \ N/A FES 15 FES 16 0.54 0.86 0.536 7.04 0.40 1.51 N/A 609.84 609.00 56.00 1.50 0.013 8.05 18 RCP
REINFORCED CONCREITE PIPE(RCP)TO BE CLASS K PIPE JOINT'S PER ASTM C443;TYPE 2 PIPE INSTALLATION ASTM CI 479
E 14 / ! a�?� / DROP INLETS 1 &2 TO BENCDOT STANDARD 840.14 WITH 840.16 FRAME&GRATES
e° } FLARED END SECTION(FES)
C301
oa

FLOATING SKIMMER t
f \ ' I
STONE OUTLET
/ O J I / / U/ DEVICE (TYP.)
/ LEGEND &O% LLa
/ "Iry / T ' ��/) SKIMMER BASIN #15/ SEE DETAIL
✓� / LdBv
TEMP. SEDIMENT _ I I / S.D.O. #15 �- 17/G5Q2 Powered by partnership.
t��\\ //^�� l
EXISTING PROPERTY LINE - - - FENCE (TYP.) , ' / `\ f
/` / �Q SEE DETAIL 2/C501 ,.- �- (' �,..►.�
PROPOSED PROPERTY LINE - - __ ✓ / I ,,,
" j 1 DISTURBANCE f l 615 St. George Square
EXISTING BUILDING 'T > CLASS I RIP RAP Suite 300
J� - 2'W x 6'L x 2'w \ , E � ,' -�""� Winston-Salem, NC 27103
PROPOSED BUILDING 21" THICK O .J
f I It I CLASS I RIP RAPS`'# 336-842-4065
FLOATING SKIMMER ® J 2'W x 6 L x 2'W
MINE PERIMETER -- - o ..... T 8' WIDE SPILLWAY SI ) C#0430
DEVICE _ _ " I 21 THICK
' - - / ® ® IvI f _ 7_".�r 1abellapc.com
�" STONE OUTLET (TYP,) _ INV.=597.31 , i
PROPOSED SECURITY FENCE x-x-x-x- O KIMMER BASIN 14 _ ` - "" // FES 4 u 590 POROUS BAFFLES '
/ O - _ �_. SEE DETAIL 7/C502 S.D.O. #14 I 64.00 LF ` "�W (TYP)
i
TEMPORARY DIVERSION DITCH T0� r
/ STONE OUTLET (TYP.) ' I OF 15" RCP
TEMPORARY SILT FENCE - - - - / SEE DETAIL 7/C502
/"" - s LIMITS OF o / 0��11 tttt
PROPOSED ENERGY DISSIPATOR \ \� ' �\ ~� 0 `���� (H CARP
___12' WIDE SPILLWAY �,r" r
® DISTURBANCE
TEMPORARY CHECK DAM . f � (TYP)
1 f• O oFEssi'' /�
/ POROUS BAFFLES
MINE HAUL ROAD �/ SKIMMER BASIN #14 ` \ \'`vi A
DISTURBED AREA �J � BOTTOM ELEVATION: 604.00 FES 12 �j \ 24
5 L
WATER LEVEL ELEVATION: 607.00 INV.=608 / �� - ' \
STONE OUTLET p ( / /' ' 3.L75'WxSS 110.15'Lxt4.25'W 27"
TOP DAM ELEVATION: 608.50 STONE INLET
TOP OF DAM WIDTH: 5' PROTECTION i °i 9 ' •......•• '
H NCDOT
TEMP. SLOPE DRAIN p(// WEIRS H LENGT AREA: 12'3 924 SQFT / l � ICK 2H FABRIC UN ERNEATHPEMIN
r STONE INLET PROTECTION MIN VOLUME: 9,360 CUFT o ` FES 3
�•-•'' ORIFICE DIA: 1.50" /`' ® \ .. INV.=600.24 , I
I - ---_ ____ `� SKIMMER BASIN #15 f
S.D.O STORM DRAINAGE OUTLET r-�' SKIMMER SIZE: 3.00" 'l CLASS I RIPRAP � r - i l \ � - BOTTOM ELEVATION: 590.00 \
3.75'Wx9'Lx10.25'W 27" e \ WATER LEVEL ELEVATION: 593.50
THICK WITH NCDOT TYPE TOP DAM ELEVATION: 595.50
III 2 FABRIC UNDERNEATH ` \ \ TOP OF DAM WIDTH: 5' \ I- T
WEIR LENGTH: 8'
MIN SURFACE AREA: 7,800 SQFTINLET
\ \
STONE ~ 64.00 LF
f \ __
\\ MIN VOLUME: 21,016 CUFT
PROTECTION OF 15" RCP
\ ` ORIFICE DIA: 1. "
FES 11
/ SKIMMER SIZE: 5.0000" `4
INV.=609.60 11
LIMITS OF
LIMITS OF �' _ DISTURBANCE ^
I I DISTURBANCE
CHANNEL FROM EXISRIGG IS' RCP TO FES 2 I ~ •.., .f'f ., ,, _ . °., ©2019LaBellaAssociates
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"
SKIMMER
BASIN #5/
8' WIDTH OF CURLEX I f \ S.D.O. #5 - �y few {
EXCELSIOR MATTING OR ` / / - L a " ALAMANCE
APPROVED EQUIVALENT \ / f 64 'j
0 FES 2 TO STA 6+50 AND ACCESS ROADM J CT SIDEI FROM STA +OD TD ,4+00 -" _ ___ ._.__ __.,_ _ -- -- y-- -- - _ AGGREGATES, LL
' 2 2 AND T '"
(/
-�o� / / / _ DITCH #3 - SEE 11011 ? Mr. Chad Threatt, VP
DETAILS FOR ,, m
8' WIDTH OF CURLEX I STABILIZATION ,"
EXCELSIOR MATTING OR 1
,,✓J � EXIST. 2" RCP APPROVED EQUIVALENT
BOTH ENDS BURIED o
o
/ \ ' --INV. = 610.89
\ (BURIED)
7
"� ,030- PROP. LOCATION OF
EXIST. 18" RCP / / I , I - -SEPTIC TANKS ` o /�
INV.1 / } = 610.89 z _.., \ I' ` 'S
/ #57 WASHED STONE &
INV. = 610.49 1 1 I I -
WIRE INLET PROECTION o
DITCH #8 - SEE (BURIED) �,/ ' STONE OUTLET' .---•`" " r - --� �•-� o ` � ` '
DETAILS FOR �� (TYP.) I SKIMMER BASIN #18 r
/ STABILIZATION SEE DETAIL BOTTOM ELEVATION: 614.50 / CLASS I RIPR4P
7 C502 WATER LEVEL ELEVATION: 617.50 ' 3.75'Wx9'Lx10.25'W 27"
CLASS I RIP RAP / TOP DAM ELEVATION: 619.00 - PRO?. LOCATION OF THICK WITH NCDOT TYPE'
D
6'Wx1 I ' ,, WELL AREA \ 2 FABRIC UNDERNEATH
WITH NCDOT
TYPE 2 THICK C a TOP OF DAM WIDTH: 5 � f
FABRIC UNDERNEATH 9'r t 7' WIDE WEIR LENGTH: 7'
FES 2 SPILLWAY \ MIN SURFACE AREA: 2,345 SQFT
INV. = 611.79 ` MIN VOLUME: F" CUFT ! f, // \ dp o FES 13
1.25 ' 1 j
,, No ORIFICE DIA: 1.25 DITCH #1 - SEE V.=624.48,,1 `\„ IN , t
CLASS I RIP RAP SKIMMER SIZE: 2.00" DETAILS FOR \
J r 2'W x 6'L x 2'W /STABILIZATION \ z \,
21" THICK DEVACEG SKIMMER t r,r" 408.05"LRCP 1
e Snow Camp Mine
/ 632.88, \
/ t SKIMMER BASIN #18/ /
EX. EOP / S.D.O. #18 / r� DI 2
/ ELEV. = 616.09 t I ( ( _ \ GRATE:629.20 /
o \ - 0 633.46 q 1 INV.=626.95
POROUS BAFFLES ( ` - 0 4 \ M
�~ o (NP) _---1 - / rO 633 1 t #57 WASHED STONE
10' X 70' & {I I I
s33.os At I T WIRE INLET PROECTION Z // T
SIGHT TRIANGLE 633y/ 33.90 \ �/ ` f
\ I STONE OUTLET (TYP.)
( \ ` SEE DETAIL 7/C502
DI 1 CA
✓ ROCK PIPE , EI GRATE=632.50 , \ /
f INTLET x 80' OF 24" RCP o INV.=630.25 TEMP. SEDIMENT 0
/ PROTECTIONS 01.0% k 126.90 LF \ FENCE (TYP.) \
I /> 620 n / \
CLASS I RIP RAP ( r \ / FLOW ® OF 15" RCP \ _> a SEE DETAIL 2/C501 CD \
2'W x 61 x 2'W 1� / f // � ' _ '\,O, E 1 3(31(20 NCDEMLR COMMENTS
I FES 1 j 1 / �" 40 - - �LIMI OF ~ \ N0: GATE: DESCRIPTION:
21" THICK INV. = 612.5 O / / f
SKIMMER BASIN #17 5 WIDE J / \ DISTURBANCE
BOTTOM ELEVATION: 614.00 SPILLWAY / / / I / / \ \ \ 4 REVISIONS
WATER LEVEL ELEVATION: 617.00 / f \ w ~
\ `` PROJECT NUMBER:
TOP DAM ELEVATION: 619.00 T / LIMITS OF j \ \ \ N \� 2190335
DISTURBANCE I f \\ 000 l
TOP OF DAM WIDTH: 5' / # 1
„r \/ / / / r DITCH 4 - SEE 1
WEIR LENGTH: 5' J ✓ / , \ \ DRAWN BY:
/� r DETAILS FOR
MIN SURFACE AREA: 4,140 SQFT / / , SKIMMER BASIN #17 / f d` / J STABILIZATION STONE OUTLET TYP. \ \ I KCG/ATC/BWS
MIN VOLUME: 9,072 CUFT / / DITCH #2 - SEE (TYP.) \ \ TEMP. SEDIMENT
FLOATING SKIMMER /S.D.O #17 / DETAILS FOR ( !1 SEE DETAIL 7/C502 \ FENCE (TYP.) `• i REVIEWED BY:
ORIFICE DIA: 1.50" DEVICE POROUS BAFFLES / f I ( PAS
SKIMMER SIZE: 3.00" STABILIZATION r /
r ^ (TYP) Y�,,,, � �„ / � �,•," �• ,/ � ( I ' � � � I ` O t \, � SEE DETAIL 2/C501 � � * 1
'`- ISSUED FOR:
fS/A / r CONSTRUCTION
/ I TEMP. SEDIMENT
Channel Side Slope Bottom Width Discharge Bottom Stabilization Side Stabilization r' J/ FENCE (TYP.) \ DATE:
Number Description Max.Bed Slope (H:V) (ft) (cfs) Method Method �✓ , ,,-"' �/ \/ / SEE DETAIL 2/C501 �,.,. 20' ` ` 4/8/20
1 FES 2 to STA. 6+50 2.90% 3:1 2 7.05 Curlex I Curlex I / t ? DRAWING NAME:
2 FES 1 to Sta. 6+50 2.96% 3:1 2 12.66 Curlex I Curlex I O AND ® r1�6+50 AND ACCESS ROAD (EAST SIDE) �� \
3 West Side Access Road Sta. 7+00 to 14+00 4.10% 3:1 2 3.5 Curlex I Curlex I
4 East Side Access Road Sta.8+50to 14+00 3.63% 3:1 2 5.12 Curlex I Curlex I
5 Access Road (West Side) Sta. 18+50 to SK 6 11.25% 3:1 2 4.55 Curlex III Curlex111 8' WIDTH OF CURLEX I /c ! I PROPOSED SEPTIC FIELD l , ` ! 1D=60'
EXCELSIOR MATTING OR
6 SK 8to Stream Buffer 6.93% 2:1 3 13.64 Curlex III Curlex IN APPROVED EQUIVALENT Cn 7 Exist. 18" RCP to FES 2 1.00% 2:1 1 20.59 Curlex I Curlex I �, ,,. SEDIMENTATION &
a a 8 SK 6to Sta. 20+00 3.250/" 2:1 2 4.55 Curlex I Curlex I f J I MATC H LI N E- I }F EROSION CONTROL
m 9 SK 7 to Sta. 20+00 3.50% 2:1 2 5.81 Curlex I Curlex I 1 3 3
SHEET C301 D PLAN
_
LEM
j ; DRAWING NUMBER:
- ' �: ��
M CHANNEL STABILIZATION SCHEDULE
rn
30 0 30 60 90 120d
o n° ` M NITORING WELL

STONE OUTLET (TYP.) SKIMMER BASIN #10
LL a
SEE DETAIL 7/C502 BOTTOM ELEVATION: 588.50 L ts
WATER LEVEL ELEVATION: 592.00
TOP DAM ELEVATION: 593.50 erect y partnership.
PERIMETER SECURITY 4' WIDE -- TOP OF DAM WIDTH: 5' CLASS I RIP RAP SKIMMER BASIN #22/ ll. 0�11/
-� -� FENCE TO CLEAR SPAN SPILLWAY WEIR LENGTH: 4' 2'W x 6'L x 2'W S.D.O. #22 SKIMMER BASIN #22 Q \ r" •��, 50' UNDISTURBED t /
JURISDICTIONAL AREA f m "' _.__ BOTTOM ELEVATION: 603.75 _
4,7 - T MIN SURFACE AREA: 1,311 SOFT 21' THICK BUFFER V
7 - MIN VOLUME: 2,857 CUFT I WATER LEVEL ELEVATION: 606.75 ®' �; / f 615 St. George Square
ORIFICE DIA: 1.00" POROUS BAFFLES TOP DAM ELEVATION: 608.25 / _ / Suite 300
' SKIMMER SIZE: 1.50" ,.
TYP) TOP OF DAM WIDTH: 5' ` TEMP. SEDIMENT! \ / NC 27103
�\ FLOATING SKIMMER WEIR LENGTH: 5'
/ / FENCE (TYP.) / WIr1StOr1 Salem,
S DEVICE -' `' MIN SURFACE AREA: 1,568 SOFT f
I � _� I "� � ' � . � d 336-842-4065
_ - �"®`�+.. MIN VOLUME: 3,336 CUFT --
CLASS I RIP RAP /\ ; SEE DETAIL 2/C501 { ! Cf0430
2 W x 6'L x 2'W LIMITS OF r CLASS I RIP RAP \ / f
ORIFICE DIA: 1.00" ` c r
21" THICK / DISTURBANCE w\ s 4
D 2'W x 6'L x 2'W SKIMMER SIZE: 1.50" STONE OUTLET (TYPJ(" I labella C.Com
^ t N A T ' \,�/�/�I 21" THICK \ v--� -- f p
POROUS BAFFLES P ' ` L� (- ^ �_ - - ' SEE DETAIL
I L_ ( _ ®._ .-- - QL 5' WIDE SPILLWAY \ LIMITS OF
(TYP) DITCH 6 - SEE VVV
� I ' # E �� T - �/ Ti LIMITS OF + ___ DISTURBANCE
\ DETAILS FOR n \ I _„_.
SKIMMER BASIN #10 STABILIZATION P H•p, FLOATING SKIMMER 1 DISTURBANCE LIMITS OF 1. J I tttttli
- i.. 1 9 DEVICE _ DISTURBANCE i( �.
I STONE OUTLET TYP. ( R I -- .._
( ) r V FES 10 LLJ
\ t \ \ . O.oFE p'
SEE DETAIL 7/C502 ( �'�.. .610 I ( \: / 4- y`
\\ INV.=608.00 _ ( _ 1
11,11'� OF 15"
TEMP. SEDIMENT 65.00 LF
22052
- -FENCE (TYP.) �• '
V 10 -'CLASS I RIPRAP U - i
STONE INLET F v � A •. GINE .•'
SEE DETAIL 2 C501 600 --....�►'a^� �/ . A _ yii� q� '.•......•
FROM SKIMMER BASIN # 8 TO STREAM BUFFER PROTECTION 3.75'Wx9'Lx12.75'W 27"
NTS 604.15 THICK WITH NCDOT TYPE _ f- / r ��� ! ii4 A.STIMQ
- 2 FABRIC UNDERNEATH TEMPORARY DIVERSION U SPILLWAY( y { " /Attu 11Nt�
602.00
_
V I 13' WIDE W \ ' - r \ V
EXCELSIOR MATTING OR I ` I SPILLWAY `_-_ „ -_ SEE DETAIL)3/C502 {! Q ' t / J/ \
APPROVED EQUIVALENT FLOATING _ ' i STONE OUTLET (TYPJ / \
\ s0s,00SKIMMER _ r SKIMMER BASIN #8 { I SEE DETAIL 7/C502
{` I�
` ' \ 6060 DEVICE WATER LEVEL ELEVATION:
0 C / BOTTOM ELEVATION: 609.50 (J ./. ` ` " I T
soa.00 613.00
DETAILS OR
DITCH #5 - SEE r TOP DAM ELEVATION: 614.50 /" 6O
z
F
l \ POROUS BAFFLES FES 9 TOP OF DAM WIDTH: 5' ( _ TEMP. SEDIMENTS y ,'
o STABILIZATION
5' WIDE (TYP) INV.=611.00 WEIR LENGTH: 13' FENCE (TYP)
SPILLWAY o END OF PAVEMENT - _ MIN SURFACE AREA: 4,500 SQFT / u> / "
- ` m MIN VOLUME: 12,426 CUFT - I SEE DETAIL 2 C501
s04.15 / / 0' UNDISTURBED E mm_ , ., �• �,.
SKIMMER�BASIN #5#5 ,o SKIMMER BASIN #6/ DITCH #9 - SEE ORIFICE DIA: 1.75" ��BUFFER \\
BOTTOM ELEVATION: 604.00 POROUS BAFFLES °' S.D.O. #6 DETAILS FOR SKIMMER BASIN #8/ SKIMMER SIZE: 2.00" } -,I-- ---
WATERLEVEL ELEVATION: 607.50 F9 (TYP) 600.77 I STABILIZATION S.D.O. #8 V ` � " sp ( SKIMMER BASIN #13/
;r °` FLOATING ��� 6
TOP DAM ELEVATION: 609.00 CLASS I RIP RAP l SKIMMER / ACCESS ROAD (EAST SIDE) f} 1 -•� - _ --- �� S.D.O. #13
TOP OF DAM WIDTH: 5' \ 2'W x 6'L x 2'W DEVICE SKIMMER BASIN #6 g FROM SK 7 NTS STA. 20+00 k j! �� f 1 /2,
WEIR LENGTH: 6' 21' THICK \ BOTTOM ELEVATION: 597.00 O 15" TEMP. SLOPE _
MIN SURFACE AREA: 1,872 SQFT r � ( STONE \ (j WATER LEVEL ELEVATION: 600.00 y; DRAIN
MIN VOLUME: 4,380 CUFT \ ¢r J
ORIFICE DIA: 1.25" CLASS I RIP RAP OUT (TYP.) A. 2 +00 ATOP DAM ELEVATION: 601.50
' 8' WIDTH OF CURLER I
SKIMMER SIZE: 1.50" 2'W x 6'L x 2'W SEE DETAIL o / TOP OF DAM WIDTH: 5' l EXCELSIOR MATTING OR \ I ©2019 L'aBella Associates
21" THICK 7/( WEIR LENGTH: 5'
\ t ) _ \� APPROVED EQUIVALENT
�a / RETAINING WALL MIN SURFACE AREA: 1,485 SQF7
6 WIDE I: TEMP. CULVERT s MIN VOLUME: 3,123 CUF STONE
7 ``� / ,�w �v, PROTECTIONITYP
\ ORIFICE DIA: 1.00"
SPILLWAY ' EQUIPMENT z z
e
\� CROSSING / SKIMMER SIZE: 1.50"
FLOATING O I l ' \_ STONE ( )
SKIMMER STONE / / I LIMDISTURBANCE
A i ; \ SEEDEA E7/C502 ` c
OUTLET ! oi' / ( ��• z DISTURBANCE `
DEVICE \ ( ( DITCH #10 - SEE r ` __.. \ ` - ALAMANCE
POROUS BAFFLES-` \ DETAILS FOR \
(TYP) \ \ ( TEMPORARY DIVERSION
\ __ MATCHLINE- SHEET C301 E AGGREGATES, LL
TEMP. CHECK DAM STABILIZATION
\ O - (TYPJ \ ` -DITCH (TYP.)
SKIMMER o 5)v� F + �., '. - `
I SEE DETAIL 3/C502 '� �V!... - _
BASIN #5/ \ I SEE DETAIL 4/C501
S.D.O. #5 \ ` l ACCESS ROAD (WEST SIDE) Mr. Chad Threatt VP
I` \a 24'x10'-4" AREA TEMP. CHECK DAM y f
BRIDGE CULVERT (TYP.) \ \ ® FROM SK 6 NO STA. 20+00 y I
l \ '• a NCDOT STEEL r a SEE DETAIL 4/C501\
BEAM GUARDRAIL POROUS BAFFLES TS 50' U NDI BUFFER \ "
( ` �225 LF (FACE AT E.P.) (TYP) 8' WIDTH OF CURLEX I
/ \ SKIMMER BASIN #7 \ EXCELSIOR MATTING OR
STONE OUTLET 1 J / \ BOA I �- \ APPROVED EQUIVALENT
t �. BOTTOM ELEVATION: 600.50 \ \
\ o \ CLASS I RIP RAP_ FLOATING WATER LEVEL ELEVATION: 604.00
\ 2'W x 6'L x 2'W \ SKIMMER TOP DAM ELEVATION: 605.00
21" THICK
•I DEVICE TOP OF DAM WIDTH: 5' z z
B MIN SURFACE AREA: 1,914 SQFT
� WEIR LENGTH: 6' \ /
6' WIDE SKIMMER BASIN #7/' \
00 ` LIMITS
DISTURBANCE SPILLWAY S.D.O. #7 MIN VOLUME: 4,600 CUFT z -
- -
ORIFICE DIA:
SKIMMER SIZE: 1.50"I 1.25"
SKIMMER BASIN #4
a i
CONTRACTOR TO PROVIDE CURLER I
\ I BOTTOM ELEVATION: 604.50 WATER LEVEL ELEVATION: r! ` EXCELSIOR MATTING ACROSS ENTIRE
I 608.00 ~\ \ \
' t8' WIDE I ! TOP DAM ELEVATION: 609.50 I 50' ` \ LENGTH
STEEPEROF ALL SLOPES 3H:1\' AND
SPILLWAY TOP OF DAM WIDTH: 5' UNDISTURBED
POROUS BAFFLES FLOATING ` WEIR LENGTH: 8' / BUFFER ✓ \ \ ` O \
' SKIMMER MIN SURFACE AREA: 2,652 SQFT
(TYP)
DEVICE MIN VOLUME: 6,767 CUFT r' \
ORIFICE DIA: 1.2
s \ SKIMMER 4BASIN #4/ 5"
Q � SKIMMER SIZE: 2.00"
W O i ---TEMP. SEDIMENT j. � \ � \\ � � a Snow Camp Mine
• ACCESS ROAD (WEST SID FROM STA. 18+50 TO SK 6 ! -FENCE (TYP.)
Z NTS / _. SEE DETAIL 2 C501 MINING LIMITS S Q Q
8' WIDTH OF CURLEX III
LW EXCELSIOR MATTING OR
APPROVED EQUIVALENT
f Q BRIDGE CULVERT NEAR STA. 16+50 (NTS) `�.,, '`� \ �"' �\ �'" � • -
U) TW TW {,
I TW TEMPORARY DIVERSION
/ / 1 3 s t n 1- _ A DITCH (TYP.)
SKIMMER BASIN #27/ ���� SEE DETAIL 3/0502' f' / Q S.D.O. #27 BW (TOP OF \ �\
z' Q � v DRAINAGE �, 2 3131J20 NCDEMLR COMMENTS
Q l ' 30 30 60 90 120
�/ STRUCTURE ) I 1 1/20/2' ADDITIONAL STREAM INFO-ALAM.AGG.
TEMP.
SCALE 1'=20' , &LAND QUALITY COMMENTS
I / 40.50 LF STRUCTURAL PLATE /` TEMP. TEMPORARY CULVERT / r \ \ N0: DATE: DESCRIPTION:
{ SILT ` ARCH METAL BRIDGE
SPAN x \ \ �'.
FENCE STONE / EQUIPMENT CROSSING
10'-4" RISE BRIDGE CULVERT 7 x REVISIONS
(TYP) OUTLET ✓ BY CONTECH CONSTRUCTION BW'598.0s TOP CONCRETE
{ (TYP) PRODUCTS PouNDnnoN R. ACCORD-,,WIOTH�'IN 2190335
TYP r ¢ ° PROJECT NUMBER:
SRiEAM V.
590.17 / BW LOWER STREAM Fr�.I
sszts rn 600.01 BW = 591.00 INVERT BW = 591.00 � CONSTRU6TION ACCESS ROAD .`t ' SECTION 10050E '" I
Bw (TOP TEMP. STONE SPECIFICATION RD DRAWN BY: KCG/ATC/BWS
OF STRUCTURE) / BW 593.18 OUTLET (TYP) Bw sss.3s.' REVIEWED BY.
�� 601.33 BW BW 593.81 BW / <
BW 591.00 595.95 rn oil CROSS PI,PE(S}:SIZE'
ew1so6.5o 1 Soo"57 591.00" TW
BW 583.11 / �.' 6/a•ai 24'-0"ARCH SPAN DETERMINED BY CONTRACTOR / W C�� PAS
BW 604.36 rn TW 604.68 / : ' � a+x'° / z I
I 605.04 soa.7s `` _ ISSUED FOR.
TW 607.50 ..
Tw so az a,�sos.os CONSTRUCTION SEQUENCE FOR ARCH SPAN CULVERT AND ���-+'• � r / J U CONSTRUCTION
LEGEND PROPOSED RETAINING WALLS -'s µ '
rn sos.n Ty STREAM CHANNEL
r
805.86 EOP.46 804.88 E05 EOP 4 � .38 ( 1. PLACE SEDIMENT FENCE ALONG THE TOP OF STREAM o. r {- DATE:
v, EOP 805.48 EOP so5.11 soma sos.3s ( / � EXISTING PROPERTY LINE - - �.� "� � �" � . '. U f
3 f 607.20 sOs.1s EOP / NCDOT STEEL BEAM GUARDRAIL BANKS. CLA5585TONE . CLASSBS70NE•, ' L.- L1J 4/8/20
( 6os.to / 225 LF (FACE AT E.P.) PROPOSED PROPERTY LINE A LLB
KEYSTONE RETAINING WALL TO ( II 2. CONSTRUCT THE TEMPORARY CULVERT EQUIPMENT I Q
605.61 o TEMP. SILT = DRAWING NAME:
BE STANDARD III UNITS NC DOT STEEL BEAM f-� CROSSING.
W18"021"x48" - 95LBS I 16+81.60 n ( ) EXISTING BUILDING L_J f
( ) GUARDRAIL AT E.O.P. FENCE TYP
NEAR VERTICAL SETBACK TO, TEMP. SILT I LOW POINT 3. ALSO, PLACE SEDIMENT FENCE AT THE LIMITS OF f
a BE UTILIZED FENCE (TYP)
605.41 I / PROPOSED BUILDING EJ DISTURBANCE DOWN-SLOPE OF THE LOCATION OF THE /
E / /r EOP 1 EDP EOP 60538 PLANVIEW 11� 1
1 f I s06.28 605.48 r 605.10 EOP sosn4 o Tw soass� MINE PERIMETER PROPOSED WALLS. ®�o
o TW 605.86 ( rn sos.z7 / sos.tt \ rn PROPOSED SECURITY FENCE -x-x-x-x- 4• CONSTRUCT THE LEVEL CONCRETE FOUNDATIONS FOR THE j
7YV 606.67 / 4.72 5.07 PROPOSED ARCH SPAN CULVERT. " l SEDIMENTATION &
so4.7 / #5 OR#57 STONE,,
o TW rn TW BW rn \ TEMPORARY DIVERSION DITCH TD � 5. ASSEMBLE THE ALUMINUM STRUCTURAL PLATE ARCH NATURAL 12'MIN; 6"OE NATURAL f
BW 596.87 s0zso ".GROUND , • :' - GROI)ND�
804.88 604.76 604.68 rn pTH(MIN)
so5.oa. 5s2.9s ( CULVERT AND CONNECT THE STRUCTURE TO THE EROSION CONTROL
>_ rn !07. I I , BW ss 1s ( TEMPORARY SILT FENCE ADJACENT CONCRETE FOUNDATIONS. T0;1' 1
m` v / W 600.35 BW (TOP 591.00 ra e�a`ie a�sa 0`1 �, p
- BW 604.83 BW 603.35 591.00' STRUCTURE)( ® BY 598P9 TW PROPOSED ENERGY DISSIPATOR ® ;A 09° I FLAN
'_ rn 607.33 \ 601.33 Bw 596.37 602.00 6. BUILD THE PROPOSED SEGMENTAL BLOCK RETAINING ,
a i �� 594.64 TEMPORARY CHECK DAM v WALLS ON THE WESTERN AND EASTERN ENDS OF THE CLASSBSTONE
ew so6 STREAM €Nv. I ARCH CULVERT. PLACE GEO-GRID FABRIC AND CLEAN \ CRms,PIPE(S)" . r
" 592.00 TEMP. STONE WASHED STONE AS THE WALLS PROGRESS VERTICALLY. FILTRATION ,
MINE HAUL ROAD r OUTLET (TYP) VAR.
� � I `rl F � Bw soo.o GEOTEXTILE f
E I WASHED STONE TO BE USED NCDOT STEEL ` DISTURBED AREA I 7. MAINTAIN THE SEDIMENT FENCE & STONE OUTLETS _ DRAWING NUMBER:
o FOR THE RETAINING WALL AND BEAM GUARDRAIL I / NOTE: J THROUGHOUT THE CULVERT AND WALL CONSTRUCTION ','
'./ ROADWAY BACKFILL FOR THE / CONTRACTOR TO INSPECT THE SEDIMENT FENCE o PROCESS. '
0 3 RETAINING WALL SHOP DRAWING COMPLETED BY A NORTH & STONE OUTLETS IN THE ROAD CROSSING STONE OUTLET .` •, " (
/ ENTIRE LENGTH OF THE WALLS CROSS SECTION-,PLAN VIEW REFERENCEA(NOTTOSCALE) ,o CAROLINA PROFESSIONAL ENGINEER TO BE SUBMITTED FOR REVIEW AREA DAILY. MAINTENANCE MUST BE I
8.
AND APPROVAL PERFORMED FOR THESE MEASURES AS NOTED TEMP. SLOPE DRAIN PLACE THE SEDIMENT FENCE AT THE TOP OF THE
r
RETAIN
NG
LLS
NE
ETS AT THE LOW
d " / ON SHEETS C501 & C502 POINT ILOCATAONS WnTHET�ERTICALLCURVE TO ALLOW /
rn STONE INLET PROTECTION i-'
E CLEAN RUNOFF TO DISCHARGE.
S.D.O. STORM DRAINAGE OUTLET TEMPORARY CULVERT EQUIPMENT CROSSING
z , Arm
9. SEED AND MULCH ALL DENUDED AREAS ADJACENT TO THE Nis
C3016
o n RETAINING WALLS.

I — (SEE INSET AT , MATCHLINE �` LaBeRa
f t + 110 LEFT) \ \ SKIMMER BASIN #21 Powered by partnership.
CLASS I RIP RAP 4.5'W x ' / \ BOTTOM ELEVATION: 612.50
11 / 9 L x IDS W 27'THICK
LEGEND CLASS I RIP RAP WATER LEVEL ELEVATION: 615.50
FES-i6 0 / / I / \ 2'W x 6'L x 2'W TOP DAM ELEVATION: 617.00 615 St. George Square
INS=6os.oD� / / -- TOP OF DAM WIDTH: 5'
\ ( FUTURE 21" THICK WEIR LENGTH: 7' Suite 300
EXISTING PROPERTY LINE — — TEMPORARY Pe, f EMERGENCY
\ \ CHECKDAM rS •4ir /J / Winston-Salem,
\� /� ! \ MIN SURFACE AREA: 2,139 S FT
PROPOSED PROPERTY LINE — — CIASSIRIPRAP4.5'WX / R�Q� / � ACCE$S ROAD \ MIN VOLUME: 5,139 FT NC 27103
_ \ 14'Lx15.6IN27THICK do A`sx�sy / \ \ ' 336-842-4065
r 1 61 TEMP.SEDIMENT 'P� SKIMMER
DIA: 1.00
EXISTING BUILDING L_� \ \ \ \ / FENCE / S FEs-1s / / / / / �622� \ 1 O \ \ ' SKIMMER SIZE: 2.00" C#0430
PROPOSED BUILDING U1, \ STONE OUT FES 14 FV=609.84
\ \ \\\ / 1 \ j / / / / / / / \ \ \ \ \ \ \ labellapc.com
0 o
MINE PERIMETER \ \ \LIMITS OF INV.606.40 6.00LF .0
\ /
PROPOSED SECURITY FENCE —x—x—x—x— DISTURBANCE A J Y
` ` // LIMITS ( ( / 624� LIMITS OF STONE OUTLET (TYP.) �, `LITIIULIT��� T
TEMPORARY DIVERSION DITCH T��— \ / DISTURBANCE I DISTURBANCE SEE DETAIL 7/C502 \ ,\�\ N CAR i��� •
TEMPORARY SILT FENCE II CLASSI RIP RAP 4.5'Wz \ \ \ 0...-*jeSS�, �.
III \ 32.00LF 15"RCP @ 2.50% / ( j / // \ ` C O
9Lx10.5'W27•THICK \ O
\ FES-13 / \ �6p \ T WIDE
PROPOSED ENERGY DISSIPATOR ® \ Nv. 2D / J / /
6
TEMPORARY CHECK DAM • / i / 0 SPILLWAY
}} 20'WIDE FUTURE EMERGENCY CLASS I RIP RAP 4.5'W x / ._` 1 I \
MINE HAUL ROAD ` /� ACCESS ROAD.CONTRACT OR 14'Lx 15.5'W 27'THICK ( \ 2 052
/ TOINSTALL6'ABCSTONE j \ ' \ \ \ FLOATING SKIMMER
DISTURBED AREA THESAME �� /--628V \ \ SKIMMER \ BASIN �j21/ ..........
��
/ AND KEEP ALL CONTOURS N f �J,��/
T / i I V DEVICE S.D.O. #21 i��A4'•.• GINS ,.
i V so
STONE OUTLET o ✓'� �_ \ ' I ' ' ` ' \ _ X—x x �V
TEMP. SLOPE DRAIN
STONE INLET PROTECTION '
\ \ \ POROUS BAFFLES
a
S.D.O. STONE DRAINAGE OUTLET \ /� f \ V 00 �s (TYP)
>, �n m LIMITS OF \ \
MATCHLINE "A—A" /V `° LIMITS OF
--630 A DISTURBANCE \ DITCH (Typ•)TEMPORARY DNERSION
DISTURBANCE
0 SEE DETAIL VC502
"A—A" V A \ \ \ V v
' / F ff t SCALE: 1"=60' V V A \ \ 20' WIDE EMERGENCY ACCESS ROAD �—g28 \ 62
\ { \ CONTRACTOR TO INSTALL 8 INCHES
ABC STONE AND KEEP ALL 4
I a l \ CONTOURS THE SAME \
POR� �/, v v
�U 2 / ©2019 LaB611aAssociates
0 ALAMANCE
v \
636 \v a�F�RDISTURBED \ AGGREGATES, LLC
TEMP. SEDIMENT
FENCE (TYP) , LIMITS OF
DISTURBANCE Mr. Chad Threatt, VP
SEE DETAIL 2/C501,
IMMER BASIN #1<t j i V \
y, . . v 6 QQ V A
A I - STONE OUTLET (TYP.)
SEE DETAIL 7/C502
LLJ
o
r
> . 7 00 \
ONE OUTLET (TYP.)
SEE DETAIL 7/C502
�84 Snow Camp Mine
CONTRACTOR TO PROVIDE CURLEX I, $� (n s \ \ \ \ \ \ \ \ '� \ \ \ \ \ \ \ \ \ \
EXCELSIOR MATTING ACROSS THE \ \ \ \ \ \ y \ \ 1 8 00
ENTIRE LENGTH & WIDTH OF ALL I
SLOPES 3H:1V AND STEEPER < LLI
LIMITS OF \ \ V A\ \ \ / / 1 TEMP. SEDIMENT
SDENT
o _✓ = I— DISTURBANCE FENCE (TYP.)
SEE DETAIL 2/C501
\ CLASS I RIP RAP
6 // 9 f . .;x / \ \ \ 2'W x 6'L x 2'W \ \ � 9 00
\ \ V A �" THICKCONTRACTOR TO PROVIDE CUR I ,. �
J TAILING POND #2 f / \ \ 17' WIDE \\ \ \ `�_' EXCELSIOR MATTING ACROSS E ,l' / ' { ` \ \ \ , 1 3/31/20 NCDEMLR COMMENTS
WE 584 - l -� \ SPILLWAY ENTIRE LENGT'FLOATING ALL I
\ \ SLOPES 3H:1\SKIMMER =PER \ \ N0: DATE: DESCRIPTION:
BOTTOM 569' ' L yQA \ \
3 j c / I \ \ \ \ \ DEVICE 50' UNDISTURBED \ \ REVISIONS
\ BUFFER A PROJECT NUMBER:
SKIMMER BASIN #21 2190335
- BOTTOM ELEVATION 611.00
/ ( L1M1 S --�- SKIMMER BASIN #23
1 o MINING BOTTOM ELEVATION: 602.00 \ \ \ WATER LEVEL ELEVATION: 614.00 1p 0 \ DRAWN BY:
TOP DAM ELEVATION: 615.50
WATER LEVEL ELEVATION: 605.00 \ TOP OF DAM WIDTH: 5' \ KCG/ATC/BWS
TOP DAM ELEVATION: 606.50 \ WEIR LENGTH: 9' REVIEWED BY:
r I TOP OF DAM WIDTH: 5' A \ MIN SURFACE AREA: 3,000 SQFT 6�0 PAS
-f _ ` WEIR LENGTH: 17'
MIN SURFACE AREA: 2,345 SQFT \ \ \ svp MIN VOLUME: 7,074 CUFT \ \ \ �� / ISSUED FOR:
0 1 i ORIFICE DIA: 1.25"
MIN VOLUME: 4so5 cu CONSTRUCTION
TEMPORARY DIVERSION FLOATING \ ORIFICE DIA: 1.25" \I \ \ SKIMMER SIZE: 2.00" /
DITCH (TYP.) SKIMMER SKIMMER SIZE: 2.00" V A
„_I 1 SEE DETAIL 3�502 ICE �9'WIDE \ \ \ V / DATE: 4/9/20
\ S.D.O. 23/#23 \ .V A SPILLWAY 11 0 \ so\ o m / 9D 1zo DRAWING NAME:
3 Y \ SKIMMER BASIN #23/
POROUS BAFFLES \
T \ f — (TYP) \ \ \ \ i STONE OUTLET (TYP.)
C ' s } Q\V SEE DETAIL 7/C502 \ L•
FLOATING
a N � o \ V A SKIMMER BASIN #20/ SKIMMER CLASS I RIPRAP IL_601
E Y \ \ S.D.O. #20 4.5'Wx10.25'Lx14.75'W 27"
U l - �1 I P I j DEVICE
a I TEMPORARY DIVERSION 1 ' \ \ \\ \ \ \ > ( THICK WITH NCDOT TYPE
DITCH (TYP.) \ \ \` \ POROUS BAFFLES 2 FABRIC UNDERNEATH
.. SEE DETAL 3/C502 _ (TYP) \ SEDIMENTATION &
P
I EROSION CONTROL
. . _
o a 0, V CLASS 1 RI RAP 00
_ 2'W x 6'L x 2'W
> { OF
m ER BASIN #9/ 21 _ 18 RCP
SD.0. 9 �.
_ D
� � �' � ' THICK 129.73 LF PLAN
Y Q M ,' TEMP. SEDIMENT
>,m .' x'1• I 7 ' ,,.�s - `..! '. . ' ; ; . ��'^ .. `„ : �: 1 t� FENCE (TYP.) ..,: ��,...-
�- _ C 301 B r� n
H E ETA SEE DETAIL 2 C501 �'�°3 Y — O D DRAWING NUMBER:
TCHLINE —i HLINE SHEET C
MA = y ao zFEs6: MAT
A
£ ': .. ..
n � FES 7
�,. .-� ' . ,, . .., . .....STONE INLET..
q . . , �: ...
., $ .. l —
,A .. _ INV. 617.75
, PROTECTION _
....77 ,
.,<
LIMITS OF . . .: ..<.
tDISTURBANCE � I >,. �.. .-
A L MINE HAU i"
� £ C301

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LEGEND —
t
5d UNDISTURBED �_� T _ 615 St. George Square
EXISTING PROPERTY LINE / '// I� BUFFER l 1 / �r Suite 300
PROPOSED PROPERTY LINE
MATCHLINE— SHEET C301 B Winston-Salem, NC 27103
336 842-4065
EXISTING BUILDING - �_] / ���' f
_�._ _ _ �
if
C#0430
PROPOSED BUILDING � / / f � � I ---� ? � I I ` _ f f � '�`'` �� •� ,/_`"'_._.�.� Iabellapc.com
MINE PERIMETER
PROPOSED SECURITY FENCE —x—x—x—x— 'i j_f
l -
TEMPORARY DIVERSION DITCH TO �� I \ _�.
TEMPORARY SILT FENCE / f l I f A \\ A O �� GSA ."I'*
PROPOSED ENERGY DISSIPATOR r '" / / Ir / i __ \\ ~� �'
TEMPORARY CHECK DAM _
^ \ _ 22052 -
E `
MINE HAUL ROAD
/
DISTURBED AREA J / f \ _ \ f p \ i�� 9(�z' IM A - II
\ \ .S
STONE OUTLET �� �����t1 111�
1 \
TEMP. SLOPE DRAIN I �M N:� \ 1 6AO
1
STONE INLET PROTECTION .� \ \ \ ` \ 0
S.D.O. STORM DRAINAGE OUTLET \ \ \ r
TEMP. SE IMENTFENCE -/
SEE DETAIL 2/C501 I W
� Cn
1Ld
f , I
©2019 LaBella Associates
f i
ALAMANCE
AGGREGATES, LLC
Mr. Chad Threatt, VP
1 �
\SKIMMER BASIN #25/ �\ f /
\ POROUS BAFFLES
MINE DEWATERING SKIMMER BASIN #25
S.D.O. #25\ (TYP) BOTTOM ELEVATION: 630.30 !
WATER LEVEL ELEVATION: 633.30
TOP DAM ELEVATION: 634.80TOP / ~
_ \ \ 5' WIDE \ WEIR OLENGTH:F DAM WIDTH: 5'
\ \ � 50' UNDISTURBED
BUFFER ~ MIN SURFACE AREA: 1,475 SQFT
V '\ SPILLWAY MIN VOLUME: 3,057 CUFT
\\ �\ STONE OUTLET (TYP.) `' ORIFICE DIA: 1 00"
SEE DETAIL 7/C502 FLOATING SKIMMER SIZE: 2.00" / r
\ \ \ SDEVICE KIMMER \ \ 3�75'WxSS I10.5 1x14.25'W 27"
alb\ INV.=30.50 r THICK WITH NCDOT TYPE
LIMIT / 2 FABRIC UNDERNEATH
CLASS I RIP RAP S
\ ` \ 2'W' x6'Lx2'W _
21' THICK
STONE INLET TEMPORARY DIVERSION Snow Camp Mine
\ \ \ STONE OUTLET TY PROTECTION P.) DITCH (TYP.)
SEE DETAIL 7/C502 f SEE DETAIL 3/C502 /
\ 50' UNDISTURBED POROUS BAFFLES
(TYP)
BUFFER
I --- --.,
70.00 LF OF
FLOATING WIDE
SPI
SKIMMER SPILLWAY
\ / DEVICE 4
` 1 f
\ l v �� ✓ /LIMITS INV.=628.00 \
DISTURBANCE TEMPORARY DIVERSION \ 1 3/31/20 NCDEMLR COMMENTS
DITCC\
\ \ ( r I \ H (TYP). I \ \ \\ \ f I STONE OUTLET (TYP.) N0: DATE: DESCRIPTION:
\ \ SEE DETAIL 3/C502 REVISIONS
\ \ ( SEE DETAIL 7/C50; ` PROJECT NUMBER:
\ \ \ \ \ \ SKIMMER
I \ EXISTING DWELLING f \ \ BASIN
19 / CLASS I RIP RAP 2190335
\ APPROX. LOCATION / \ , \ \ #19
\ 1 / 1 21" x THICK
x 2'W \ ` DRAWN BY: KCG/ATC/BWS
SKIMMER BASIN #19 !/ 21" THICK
\ BOTTOM ELEVATION: 621.50 f REVIEWED BY:
WATER LEVEL ELEVATION: 624. 0 ' PAS
\ \
TOP DAM ELEVATION: 625.50 f
TOP OF DAM WIDTH: 5' ISSUED FOR:
WEIR LENGTH: 12' CONSTRUCTION
MIN SURFACE AREA: 3,960 SQFT
MIN VOLUME: 8,586 CUFTORIFICE ' DATE:
SKIMMER SIZE: 1.50" 4/9/20
\ \ \ \ \ \ \ \ o -� DRAWING NAME:
A
a
1"=60'
\ \\ \ \ Z \ \ \ SEDIMENTATION &
\ \ EROSION CONTROL
M21LZ3
\ 1 ` \ \ \ \ \ \ I ) I } I PLAN
E -�. ,\ ,\ ^� DRAWING NUMBER:
30 0 30 60 90 120
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LEGEND
Lai3t;
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BOTTOM ELEVATION: 567.50 EXISTING PROPERTY LINE -
^ \ \ WATER LEVEL ELEVATION: 571.00 -
\ TOP DAM ELEVATION: 572.50 _._ ____ _ PROPOSED PROPERTY LINE - - 615 St. George Square
_ TOP OF DAM WIDTH: 5 Winston-Salem NC 27103
r-� Suite 300
-? MIN SURFACE AREA: 1,352 SQFT `� Winsto -Sale
WEIR LENGTH: 5' EXISTING BUILDING L_J
MIN VOLUME: 3,050 CUFT r PROPOSED BUILDING
^"^^ "-,_ - ._„_ CLASS I RIP RAP J,
O SKIMMER BASIN #1 - - --- - _ ORIFICE CIA: 1.00" - --
^`'` BOTTOM ELEVATION: 564.00 ^"'r -'"�� ""^-- ""^ f.. 2'W x 6'L x 2'W `� E PERIMETER C#0430
\\ ^
y� ..___. -� .g .,,_,." .�. _� _ �" .-- .. ER S 21" THICK _r-'--� " �- MIN
WATER LEVEL ELEVATION: 567.50 /f f/ ,f � � SKIMM IZE: 2.00" �
` ' TOP DAM ELEVATION: 569.00 / -,__ - _ `" _. PROPOSED SECURITY FENCE -x-X-x-x- labellape.COm
TOP OF DAM WIDTH: 5' / // _ _." FLOATING -
I ^ - WEIR LENGTH: 11' ^ 'G6I �T ��® F SKIMMER -- TEMPORARY DIVERSION DITCH TD->
CLASS I RIP RAP / / CONTRACTOR TO EXTEND TEMPORARY -
`\ SKIMMER BASIN #16 ( 2'W x 6'L x 2'W \ MIN SURFACE AREA: 3,570 SQFT \ J ( ' / SLOPE DRAINS AND RE-WORK DEVICE TEMPORARY SILT FENCE
\\ MIN VOLUME: 3,570 CUFT /\ ( (/ TEMPORARY DIVERSIONS AND STONE `" " KI - _- STONE OUTLET TYP. T
BOTTOM ELEVATION: 569.00 , 21" THICK ORIFICE DIA: 1.50" r- INLET PROTECTION AS THE SKIMMER BASIN #2/ r SEE DETAIL 7/C502) PROPOSED ENERGY DISSIPATOR ® « I
WATER LEVEL ELEVATION: 572.00 j ii "` ^ 1 I I 1
TOP DAM ELEVATION: 574.00 / SKIMMER SIZE: 2.00" ( { / OVERBURDEN SOIL FILL HEIGHT ?0 S.D.O. #2 _ �\.�` CA /�� i
// SKIMMER BASIN #16/ I INCREASES. 18" TEMP. SLOPE TEMPORARY CHECK DAM a `�� (N RC
TOP OF DAM WIDTH: 5' / / # ' ' \ F •.. ""•..�/
LENGTH: 4' ( f / f S.D.O. 16 f
MIN WEIRSUR ACE AREA: 3,080 SOFT ' t -` I - -a '_ ` - 5 = FENCE (TYP.)
-- DRAIN S�TEMP. SEDIMENT ' FES O '- L
- - '`*, ``�,� ,.. MINE HAUL ROAD � �9
MIN VOLUME: 6,405 CUFF FLOATING ~ ' / 1 74 CLASS I RIP RAP 3'W - SEE DETAIL 2/C501 J _
ORIFICE DIA: 1.50" SKIMMER / ((� x 9.5' L x 3' W 27" - �� DISTURBED AREA _
DEVICE STONE OUTLET (TYP.) ( k \,I M THICK WITH NCDOT - N 5' WIDE - 22052
SKIMMER SIZE: 2.00" SEE DETAIL 7/C502 1 f / TES TYPE 2 NON-WOVEN / SPILLWAY STONE OUTLET
I L ^^ ( E 3EOTEXTILE FABRIC:= -_ _ TEMP. SLOPE DRAIN ���A9 'NGINEE.•' ��
- CLASS 1 RIP RAP 562 f SKIMMER BASIN #1/ UNDERNEATH_
1 ` S.D.O. 81 �E --- �_ POROUS BAFFLES STONE INLET PROTECTION l� TI�11 `\} 2'W x 6'L x 2'W 11' WIDE )p-�F (TYP) rAl
�21" THICK SPILLWAY/ X, - " X,x�x -
CLASS RIP RAP 3'W F `5 ~ X DRAINEMP. SLOPE S.D.O. STORM DRAINAGE OUTLET
I`l `4' WIDE r. � --... _ 80 X�- X--- .
t ` O r SPILLWAY x 9.5' L x 3' W 27" x�X -
111 \ J fff
p ` y THICK WITH NCDOT -" s rr
TYPE 2 NON-WOVEN /
POROUS BAFFLES \ GEOTEXTILE FABRIC r
r -POR UNDERNEATH 18" TEMP. SLOPE r x
x M� I DRAIN
X� x FLOATING
SKIMMER / / ✓ a x ( j / l
DEVICE ,r TEMPORARYDIVERSION
~ ` --- DITCH (Tt /
' t� ✓ POROUS BAFFLES f /
f ` � SEE DETAIL
3/C502STONE INLET
01 /
PROTECTION (TYP.) \ \ L I
CLASS I RIP RAP
n2'Wx 6'Lx2'W � f - f Ss /
/ (} / 21" FLOATING //
DIST RIBANCE / /// / 1 / f ©2019 LaBelle Associates
l f ✓ �� /� / I V 111 V r 1. DEVICE R r 2 DISTURBANCE
A
TE P. SEDIMENT n O 1 ISTURBAN� /
/ v /FENCE (TYP.) e ��� A
f I SEE ETAIL 2/C501 / / % / 1 /
TEMPORARY DIVERSION
DITCH (TYP.) I DISTURBANCE i I / { / _ l O /� / 1 / ` ALAMANCE
/ MSEE DETAIL 3/C502 / SKIMMER BASIN #12/ /
/ ! S.D.O. #12 J /CLASS 1 RIP RAP 3'W
SKIMMER BASIN #12 \\\\\� r o J % x 9.5' L x 3' W 27" / / / / I AGGREGATES LLC
0 / / BOTTOM ELEVATION: 575.50 // \1 -1\C`\ ff THICK WITH NCDOT 9
WATER LEVEL ELEVATION. 579.00 / f/ POROUS BAFFLES F P f / g8 TYPE 2 NON-WOVEN SKIMMER BASIN #3
TOP TOP DAM
MOF DEL WIDTH:ION: 581 00 �� (nP) C // UNDERNEATHGEOTEXTILE WATER
BOTTOM ELEVATION: 570.50
WEIR LENGTH: 4' 4' WIDE/ / % 1 / / WATER LEVEL ELEVATION: 574.00 / Mr. Chad Thresh, VP
MIN SURFACE AREA: 966 SOFT y ' SPILLWNY fj ( / % TOP DAM ELEVATION: 575.50
MIN VOLUME: 1,712 CUFT f TOP OF DAM WIDTH: 1
w`� / x r.' � WEIR LENGTH: 15'
f ORIFICE DIA: 0.75" / f MIN SURFACE AREA: 4,640 SOFT
SKIMMER SIZE: 1.50" / ' \ MIN VOLUME: 12,647 CUFT
i I 1 STONE INLET N / ORIFICE DIA: 1.50"
' TEMP. SEDIMENT f / I PROTECTION (TYP.) SKIMMER SIZE: 2.00" C
_ FENCE (TYP.)
/ 90 SEE DETAIL 2/C501 f ( \ STONE OUTLET
1 t / �\-• I 1 x SEE DETAIL 7/C502 /
/{ 18" TEMP. SLOPE -_ . /
O _ DRAIN 15' WIDE /
( ' - l I 620 - x SPILLWAY
r �/ TAILING POND #1 610 SKIMMER BASIN #3/
50' UNDISTURBED / FLOATING WATER ELEVATION (WE) - 594' S.D.O. #3 `
s BUFFER I CLASS I RIP RAP SKIMMER BOTTOM - 579' (DETAIL 4/C401) _ 5 0 `
Q` 2'W x 6'L x 2'W / DEVICE 600 POROUS BAFFLES ` ,
21" THICK A SKIMMER BASIN #28/ \ \ (TYP) CLASS I RIP RAP
S.D.O. #28 590 x 21" x THICK
x 2'W
21" THICK
SKIMMER J \\ 1 f
CONTRACTOR TO PLACE CURLEX I DEVICE
EEXCELSIOR MATTING ACROSS THE ' 50' UNDISTURBED
ENTIRE LENGTH AND WIDTH OF ALLBUFFER
SLOPES 3H:1V AND STEEPER. _ TEMP RARY DIVERSIONS f ' I / ' - Snow Cam[] Mine
I DITCH (TYP.) ' \ r
4' WIDE ' - '` SEE DETAIL 3/C502
\ / SPILLWAY S
1 S B E WATER IS RECIRCULATED
POROUS BAFFLES Sy,EWEEN TAILING ` `- \ t SKIMMER BASIN #29/\ TEMP. SEDIMENT
.� ,,,.. ONDS 1&2. S.D.O. #29 \
E i
SKIMMER BASIN #28 /(TMP) \ , ' \ \ \ SEE FENCDETAIL 2/C501
c Jl / ,.--' �`. *� FLOATING � `
BOTTOM ELEVATION: 583.00 , DEVICE
17, ER
WATER LEVEL ELEVATION: 586.00
TOP DAM ELEVATION: 587.50 l CLASS I RIP RAP
I ( TOP OF DAM WIDTH: 5' \ 1 ` 2'W x WL x 2'W
r, 111 WEIR LENGTH: 4' / 9S l 21" THICK
g# / MIN SURFACE AREA: 760 SOFT
MIN VOLUME: 1,380 CUFF CLASS I RIP RAP
/ ORIFICE DIA: 1.25" 2'W x 6'L x 2'Wj ` 2 3/31/20 NCDEMLR COMMENTS
SKIMMER SIZE: 3.00" m ' 21 THICK / in I X \ \ \ \ \ -�
� l �X \ ADDITIONAL STREAM INFO-ALAM.AGG,
1120/20
-' &LAND QUALITY COMMENTS
FLOATING N0: DATE DESCRIPTION:
/ .-'50' U DN ISTURBED\ \ I l SKIMMER ��
r �; ' DEVICE 60 POROUS BAFFLES SKIMMER BASIN V I
CLASS I RIP RAP BUFFER �.. /t (TYP) BOTTOM ELEVATION: 579.50 _ } , V PROJECT NUMBER:
2'W x 6'L x 2'W ` _ I ( SKIMMER BASIN #9/ ` WATER LEVEL ELEVATION: 583.00
I' ~\ \ S.D.O. #9 \ / TOP DAM ELEVATION: 584.50 2190335
THICK / / PERIMETER SECURITY
TOP OF DAM WIDTH: 5' /
/'• --�----" \. \ / ` FENCE. CONTRACTOR
/ / WEIR LENGTH: 4' -'SHALL NOT CUT TREES DRAWN BY: KCG/ATC/BWS
/ MIN VOLUME: 700 S UFT I r F00T BUFFER WIDTH
�� ` •�, 4' WIDE / MIN SURFACE AREA: 700 SQFT / WITHIN THE TOTAL 100
SPILLWAY / ORIFICE DIA: 1.50" AND MEANDER THE REVIEWED BY: PAS
- YYY /• l f
LIMITS OF FLOATING r -._ / /// // SKIMMER SIZE: 2.00" SECURITY FENCE )AS
{ DISTURBANCE SKIMMER / I NEEDED. (TYPICAL) ISSUED FOR:
O DEVICE %'� 'b SKIMMER BASIN #11 ���--- '"""
�° / BOTTOM ELEVATION: 577.50 ~` ey I / j CONSTRUCTION
( ` �" o� POROUS BAFFLES / �94 ` WATER LEVEL ELEVATION: 581.00 \ / M
> ! / TOP DAM ELEVATION: 583.00 DATE:
10' WIDE- \ (TYP) / F ( TOP OF DAM WIDTH: 5' 4/8/20
15" TEMP. SLOPE \ SPILLWAY / 4j
WEIR LENGTH: 4'
f Iy ta DRAIN j POROUS BAFFLES \ 4 ! f O MIN SURFACE AREA: 4,000 SQFT ` DRAWING NAME:
L \ - B SKIMMER BASIN #13/. (TYP) TAILING POND #2 �" MIN VOLUME: 10,283 CUFT
a \ `a Os S.D.O. #13 1 WE - 58< / f 1 ORIFICE DIA: 1.50"
BOTTOM - 569' \ / SKIMMER SIZE: 2.00"
E _ SKIMMER BASIN #9 -
�- BOTTOM ELEVATION: 593.00 ^ POROUS BAFFLES / / 11®
SKIMMER BASIN #13
/ / SKIMMER BASIN #11/
WATIDE ER LEVEL ELEVATION: 598.50 (TYP) -. S.D.O. #i t j ~ \\ \ /" 60
BOTTOWATERMLEVELAELEVATION: 603.00 SPILLWAY TOP OF DAMWIDTH: 598.50 S90 $8 - // �
N \ \ , ` TOP DAM ELEVATION: 604.50 WEIR LENGTH: 6' � f / / ~ /� SEDIMENTATION &
3: TOP OF DAM WIDTH: 5' o \ v� / / / cg0
0 ^6/2 STONE INLET MIN SURFACE AREA: 16,03 SOFT
OF CLASS I RIP EROSION CONTROL
o Q ly \ / ~ \_ _6
WEIR LENGTH: 10' MIN VOLUME: 16,034 CUFT _ \ J / a
a J PROTECTION (TYP.) MIN SURFACE AREA: 3,200 SQFT - 2'W X 6'L X 2'W /
_ _ ORIFICE DIA: 1.50" \ \ f
MIN VOLUME: 7,584 CUFT - \ \ / 21" THICK `� /
�4 \ \ ORIFICE DIA: 1.50" _� SKIMMER SIZE: 2.00" / ` ' PLAN
N SKIMMER SIZE: 2.00" o \
�. - HEFT C301 R
a MATCHLINE S ` ` • - t, FLOATING MATCHLINE- SHEET C301 C
-
� DEVICE DRAWING NUMBER.
^.„�. f
. U
A.. .�I ..J. /- ,:.: __._..._.1-._(. ./..._._._:..-./._..�. .,.»... ..._,._. ._(, ':..�.. � _.._.-...- .._. ....-.�:,. , .. .:.,.�. � .... ..._1_..:..\_... ... .. .......r-T-1_ ✓Ll_:1
O �
N
4' WIDE 30 0 30 6o so 120
SPILLWAY
E
xf >
a .
............... 16 J mum It
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i
I _
LEGEND 615 St. George Square
g q
EXISTING PROPERTY LINE - a / I' / f 16
+00 'i 1 ? 1, Suite 300
i N
Winston-Salem, NC 27103
PROPOSED PROPERTY LINE - -A ✓ /
EXISTING BUILDING. � � 0 r ,,, , , l � � � �� s % � 1 � �/ �• ._,.� _.._. .._._ - 336-842-4065
FI SKIMMER BASIN #19 C#0430
/ r.
PROPOSED BUILDING i ✓ I / BOTTOM ELEVATION: 621.50 labella p
i L� T /� c.com
% i ✓ MAT C H L I N E— S I E E I C 3 O l WATER LEVEL ELEVATION: 624.50
MINE PERIMETER TOP DAM ELEVATION: 626.00
/ ; ✓ ✓ „ R TOP OF DAM WIDTH: 5'
PROPOSED SECURITY FENCE —X—X—X—X—
=17 - - - -� - \ WEIR LENGTH: 12'
., ✓, MIN SURFACE AREA: 3,960 SOFT
TEMPORARY DIVERSION DITCH TD-'y � A, tj \ `/ \ } '- '�' ."""� / � xOp' 1 MIN VOLUME. 8,586 CUFT ��ti����i�rr�//� �4
/� �0 "� ._. ORIFICE DIA: 1.75" ���� ^(� C O ��e
TEMPORARY SILT FENCE t �, 1 SKIMMER SIZE: 1.50"
1
/ F
PROPOSED ENERGY DISSIPATOR
r TEMPORARY DIVERSION
r
TEMPORARY CHECK DAM L �p. DITCH TYP, Z 11, % ,r' 8 - -
MINE HAUL ROAD / '', \ /� UNDISTURBED \ �� 22052�
SEE DETAIL 3 (C502 \ `, 50' UNDI A POROUS BAFFLES
1r
BUFFER Z tit (TYP)
DISTURBED AREA i , i� .Q� •...........�n
f� l r �,
it .\ �. Fes. ✓ _ - - _. ✓ LIMITS OF A. TIMe
STONE OUTLET p t / ,' `� *� � `� DISTURBANCE FLOATING 0
/` /� r
SKIMMER '� CLASS I RIP RAP
TEMP. SLOPE DRAIN ; AEG " DEVICE 2'W x 6'L x 2'W " ..
STONE INLET PROTECTION C�M/T 2 HICK
I
r I
/A CLASS I RIP RAP ` \� _ / TEMP. SEDIMENT r \ _ _ � .� /m I T
✓ � " " ,,,✓ ! j l f 2'W x 6'L x 2'W ` j '� .ram/: ;,, FENCE (TIP.) �� - ��
21" THICK ' ✓ " " �� `- '_ ""- SKIMMER
w- 70.00 L OF BASIN r .
{ " DEVICE S"ONE OUTLET (TYP.)
SKIMMER P S.D.O.
f
"Y
INV.=628.00 _
1
SPILLWAY \ ti
r ..
FES 5 _ �w
✓ INV.=630.50
/ 3.THI SS I RIPRAP ©2019 LaBella Associates
f 75'Wx10.5'Lx14.25'W 27"
2 FABRIC T UNDERNEATHH NCDOT PE
SKIMMER BASIN #24
__.__....... _ ..
S.D.O. #24
(� ,, / ! ✓ r t �'Ql-------�-41 - STONE INLET �,� '�c>
/ / ` PROTECTION t
al
f � "
W fr ALAMANCE
SKIMMER BASIN #24
I
BOTTOM ELEVATION: 620.00 `. POROUS BAFFLES
WATER LEVEL ELEVATION: 624.00
(nP) AGGREGATES
TOP DAM ELEVATION: 625.50
WEIR LENGTH: 18' "„"
MIN SURFACE AREA: 6,100 SOFT
TOP OF DAM WIDTH: 5' LIMITS OF
i
( , j Si ,,�' "� ., DISTURBANCE Mr. Chad Threatt, VP
Q MIN VOLUME: 15,348 CUFF
�� ORIFICE DIA: 1.75" i
SKIMMER SIZE: 3.00"
z
SKIMMER BASIN #25 y
BOTTOM ELEVATION: 630.30 I t
WATER LEVEL ELEVATION: 633.30
"� �, ` , �• � 1 TOP DAM ELEVATION: 634.80 ,TOP OF DAM WIDTH: 5'
WEIR LENGTH: 5' .,
J
MIN SURFACE AREA: 1,475 SOFT
O CUFF
r
r� /
RIFICE
/
SOKIMMERDSIZE: 2.00" f O� � ,''TE
` r
_ _ MP. SEDIMENT
- 1 — FENCE (TYP.) N
FLOAING � i`� ;
� , SKIMMER /
1 DEVICE
- i
% D \
j SKIMMER BASIN #27
i" BOTTOM
LEELEVATION:
ELEV I 616.20 .. ':;� j SKIMMER BASIN 25 / ` 1_
ELEVATION: 619.20 CLASS RIP RAP
_ 1 j # / �� / 2'W x 8'L x 2'W
TOP DAM ELEVATION: 620.70 J t - — MINE DEWATERING ,' 21" THICK ; Snow Camp Mine
� `, '1 % S.D.O. 25
TOP OF DAM WIDTH: 5' j E h # 50' UNDISTURBED
WEIR LENGTH: 8, l POROUS BAFFLES -� I DI D F
MIN SURFACE AREA: 3,060 SOFT
MIN VOLUME: 7,092 CUFT ' ' (TYP) BUFFER
,. WIDE
.___ ORIFICE DIA: 1.25" \ ! " SPILLWAY < <
--
,{ r' ° STONE OUTLET (TIP.)
SKIMMER SIZE: 3.00"
� CONTRACTOR TO PROVIDE CURLEX I �„ A
r-
,.- POROUS BAFFLES
i
EXCELSIOR MATTING ACROSS THEr ^'
SLOPES 3H:1V AND STEEPER �- ,(TYP) '� ' STONE OUTLET TYP.)
ENTIRE LENGTH & WIDTH STEEPER
ALL / " (� /
SKIMMER
BASIN #27/ -
1 /
7 1 3/31/24-
FLOATING NCDEMLR COMMENTS
f
S.D.O. #2
SKIMMER BASIN #26 / ✓ --- — -
BOTTOM ELEVATION: 614.00 I/
>- , WATER LEVEL ELEVATION: 617.00
r` r NO DATE: DESCRIPTION
O� r' _._
_ SKIMMER _.. _ TOP OF DAM WIDTH: 5' ��, S 1 f REVISIONS
✓ /,/ ' � � j : DEVICE � TOP DAM ELEVATION: 618.50 � TEMPORARY DIVERSION f
TONE OUTLET TYP.
CLASS I RIP RAP DITCH (TIP.) , ( ) PROJECT NUMBER:
r' 2 W x 6'L x 2'W 1 WEIR LENGTH: 18' /'" SEE DETAIL 7/C502 fff /�
' 21" THICK 8' WIDE MIN IN VOLUME:
FACE AREA. 6,201 FT E SE DETAIL 3/C502 ' L
/ SPILLWAY ` MIN V LUME: 15,687SCUFT E 2190335
J DRAWN BY
" > 1
j KCG/ATC/BWS
_ SKIMMER SIZE: 3.00" �
r
�.. REVIEWED BY PAS
J
STONE OUTLET (TYP.) �„ - .. _.._ ._...� q �`ti, p O1" _ , .._ r= r✓� �
ISSUED
� f ✓� ` MINE HAUL ROAD
CONSTRUCTION
SKIMMER B�SDINO# �� �� TEMP. SEDIMENT
DATE:
r
POROUS BAFFLES " `� �G FENCE (TIP.) / 4�9�20
j., (TYP) ✓ IN�CA
r i ,
, _ DRAWING NAME.
SKIMMER
FLOATING
i a
DEVICE ,.�.
a 00 /` j y,, � 1 } V � � ��"`.-..,. � :,:' � 30 � 30 60 90
0
_ 1�I=6OI
> � izo
i
18' WIDE /
SPILLWAY o �
SEDIMENTATION &
\ EROSION CONTROL
�. _ -- -- -CLASS I RIP RAP, �.•' _ / -�. � ��
a ' TEMP. SEDIMENT _ " STONE OUTLET (TIP.) F i
FENCE TYP. - _- -... 2 W x 6 L x 2'W \ _ _.- r ;
21 THICK _ _ - PLAN
Y "
CONTRACTOR TO PROVIDE CURLEX I
_ - R MATTING ACROSS THE
E r' I # / _/ / ENTIRE LENGTH & WIDTH CF ALL // �f �`! 'f / DRAWING NUMBER:
N A -......_.. ,' _... ___ ........... .. ___. _ _ ... \ __.SLOPES 3H:1V AND STEEPER j`
6i ` , - ! , SKIMMER BASIN 7 ,.� STONE OUTLET (TYP.)' `��e `` ` .. / jr , EXISTING DWELLING_
N
o -,. / S.D.O. #7 7 _ __ __.. ....._.. _. �., "'' / / ,f f APPROX. LOCATION
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\ \ Powered by partnership.
I50 50 10 150 _ 200 ' I l r / _ 804.15
602.00
f \ I 615 St. George Square
I" - tar TYPICAL ENTRANCE ROAD SECTION _ -- .......,� " .,.,� \ \ ` \ ( II I - - �I
NIS Y \ `\ t5 ` IFj-��i _
4 \ (TO BE HEAVY DUTY PAVEMENT \ � ~� � \ ls� 1 � \ ;04.00 � 606 00 605.00 _ Suite 300
It 10' ABC STONE FROM CLARK RD. TO STA 18+94) \ ;� \ \ \ a �`, ` , ` F - Winston-Salem, NC 27103
\ \ 51 RETAINWe I o 336-842 4065
\ WALL
6a .nS DSKIMMERO. 6BASIN #6/1 /O
1 / C#0430
1 \ ` < 00 — r� 7 ' _ __ ~ `a 1 0 z4'X1o'-4" AREA I r _ , � - labella
�p Z / ! /` 6 30' 6' 6' \ \ ar \ `BRIDGE CULVERT I-,M pc.com
I �l r p A L SKIMMER BASIN #8/ '
EXIST. 12" RCP 1.5" S 9.5 B / S.D.O. #8
\ � ASPHALT TOP F BANK -P
c p�INV = 6 O �/
/ /BOTH ENDS BURIED ��
\ n (BURIED) r // t' FT " FT r-/Fr m Oh00
_ ( ` m I' 'r Q ttt11111111 t1/I
1 V. EXIST. 18" RCP ( ___ 1 1 1 \ S _ c 1 ! I— �� T
INV. = 610.49 } � 3 3 3 3 \ SKIMMER =N, 1 � -' ��• �(NCAROM�• �
(BURIED) INV. = 610.89 I BASIN #5/ O :'FESS p' .•7
I 10" ABC STONE 2.5" 119.0 B ASPHALT S.D.O. #5- WASHED STONE TO BE USED
I FOR THE RETAINING WALL & /
M ROADWAY BACKFILL FOR THE / \
� l r ! ENTIRE LENGTH OF THE 22052
_ WALLS t,
/ I ��C NCDOT STEEL
o lFES 2 ' — O BEAM GUARDRAIL , FN rGP
INV. =�611.79 �� FI ( ` \ 'i ...........GINS .••' �.
\� 225 LF FACE AT E.P. c i� 9
EX. EDP r II C II �� ,,.- ,. _ — I I A \\ I
..- ELEV. = 616.09 7J � 1� S2 / l � � \ \ o � � �/! �� A. tQro ,�>
r- S O , L_.. \ I m 'AAl 1 1 1 1 L 1111 J
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SKIMMER BASIN #18/ o N
S.D.O. #18 ` SKIMMER BASIN
S.D.O. #7 A \ o
/ ROCK PIPE -
INTLET ^_ _ / ( a
PROTECTION 80' OF 2 RCP —t — — _ CROSS
! FES 13 ~ , ` ` SKIMMER I BASIN /
t r®1.0% a32.6e S.D.O. #4
/I
FES 1 t o k 6,2� o r O 633.46 ` ` INV.=624.48
f ,INV. = 612.5 o v 14, ` f
� 48.03 LFfff
\ s33.so 633.06 O•rF 15" RCP / r
GRAVE=630�25 ` IDI\2 - r .� -/
/ r
r / GRATE=629.20
SKIMMER BASIN #17 / �. . NV. 627.00
SDO ! 3 f
5' SIDEWALK WITH ADA -
/// ACCESSIBLE RAMPS
�
126.90 LF ADA SIGNS REQUIRED FOR 0 0 4
/ / l N \ \\ \ \ V I ©2019 LaBella Associates
/ OF 15" RCP 1 ALL HANDICAP SPOTS SKIMMER BASIN #27/
( 07_ \� \ \ t\ \\ I ' ' I / S.D.O. #27 /
°o �i / / r WSW 1
MONITORING WELL ALAMANCE
\ O�\'�� l ( ✓ / �l ,s \ \ \ \ ` }OUTLETS(TYP) ! 1 TONE1 /
a ,� i -' , '' �' / / V l I f� �o I -' _ AGGREGATES, LLC
Mr. Chad Threatt VP
SKIMMER BASIN #26/ e
Q ` MONITORING WE L l / I ( /� / r S.D.O. #26 /
f / 7
0
670 670
-------------
- - s - - - - - - - -
660 A 6 � -
g - - - --- -----------------
ERR -
OR
I-
650 - - - - - 650
- - - - - - - - _ _ - - Snow Camp Mine
640 640
G
630 _ _ - - - T 1 630
0 D - - - - 0 0 _ 2 3/31/20 NCDEMLR COMMENTS
t - -
- - - _ 1 1/20/20 ADDITIONAL STREAM INFO-ALAM.AGG.
- - &LAND QUALITY COMMENTS
620 620 N0: DATE: DESCRIPTION:
- _ REVISIONS
- - - - PROJECT NUMBER:
_ - 2190335
6 10 _ 61 0 DRAWN BY: KCG/ATC/BWS
_ _ _ _ _ REVIEWED BY: PAS
ISSUED FOR:
CONSTRUCTION
600 600
- DATE:
_ - - - - 4/9/20
m _
- - - - -R-H P
N14-
E DRAWING NAME:
- - _ - - U R -
590 - - - - I N D Q - - 590
E
o - -
o s 580 - -- - - - -- - - - 580
d O -
c
PLAN AND PROFILE
U U _
M . 570 570
EDRAWING NUMBER:
M E
of U O N r t N (0 r t N N DD M M N O M co o] O M O o0 (o M N 00 O W U r r O M M (o W O O t r r O t r QO O N 10 t m in N N O t O t M 01 N t o7 t r (0 m r (0 a0 t M <O
0 o O (0 N r M 10 r O N O (O 10 .- <0 '0 O O (O t N 0) 10 M r co O N — N M t CO M M t t 0 N t r O 00 r O N N t t M UT 0] c0 p0 O 01 O O q N O q O r0 � t t t 0> r lD r
p (o d' r (0 0) 0D 0 O) N M N Ui d- (6 L6 06 r 6 O O N - N d' M I� 1(i Oi (o O '6 Vi O d' r N M O O o7 Ih `6 LO V) t7 M O Oi O r Oi r0 oo to co .- 10 O N oo r (o o Lo .- Ln d' to m r t7 of h 0)
N N N N N N N N N N N N N M M M M M M M IM M M t M t M t M M M M M M N N N N N N N N N N N O O 0 0 O M O 0> O 0) 0 0 O O O 50 0 50 1D0 150 200
m t0 (O (O (O (0 (O O (0 O O O O O (O O O CO t0 V7 O O O O 0 V) m 0 (D t0 to 0 0 O u) O M C0 (0 O O o1 0 U) O O O to V7 O V1 0 O 0 0 0 (0 0 (D (0 M M t0 0) O W O co N O M t0 V1 to O O O (0 t I I I I I
q M
O
N OJ
HORIZONTAL 1^ = 1oa AML MIL
E VERTICAL 1" = 10' mum wmr'lma
—0+35+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 18+94.45
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\ �/\/fir /� -.,....,..PID:��i�2733,,,,. /// /
/ T / `�O�\ f .. DAN"o AR\ l 1 t / / /- DRAINAGE AREA
// \ , ( l t 615 St. George Square
PROPOSED SKIMMER BASIN (SK) Suite 300
Winston-Salem, NC 27103
/ / 1 , } \ ` / I I I�I� �I \� 4�°`�f I/� //,�/��,%" �o°//�,(rr~^\_/ �//{\r!/r/,�/�/--�/ /�\I�11 1/7 1// (�`I1 I1�1l�e�\Ii/ //,r-- `\ \\\",,�`\�`�\.��\.,� -- `-_` r,�"= -Le;g,�',/)-�.,,;'%'/,41 --•t-y�': 336 842
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� r 1 � .-- .--'�5`� T� N ll _.1 /l � { t /'A � -�-``~ ,� p:. Fe
,✓ / f / ' SK2 �. = 0.73 Ac .. ijp O ON OF \
/ PID: 02 3 6 / _
� � � \ AREA = SK3 AREA = V � y -,,� 1`� � �I � � `�' � �. . A� I�� � �a �``�l � � �� �-- -----_ .�uo�''� "�..r' � � l^ lI I � �� � ��� '��. AC
��� f\/ 1.48 Ac I I V \ v \ V �� PID:~tio27ss _ _ :: } I / / I = 22052
4.54 Act may- ` \ 0 `\ SK 21 AREA / PAMELA A'OAUSEY-REKOEIRUSY' I t / ( f /�; r,.._
46 Ac GIN `�.
M1
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l 1 �o/ �� ;-- __ —- r" / / /� / / l ® `._--�' _"` � f l ''\ �° � __ `•"` �(-IOUS .6 / { �4`, � {._ �r' ,..., f l � �,,'. _ . ,�� t A.ST` ``��
SKit AREA ArR `' ` \ \ / \` �\ \ `"'�. ._ - '" \ ._ ._ <�� BRIAN J7 EE �,D:1027{2SKt AR - i / l-- 4.27 AC :r' ( - -".'- --- O Q HEATHER RATCtJFFE /
3.24 Ac r \\ \� \ ! Is2o - - ' G
pE ORA P. AND � III i
SK12 AREA_ ���� ��~ � � � / �� , / \ I I " ' .--" ..,-- �..„,,, ,`'-" ,,. ,.,\ � '.' \aG �G � , A / fr,f F f ,! /✓,^ I 'I � T
/ /\ ( � �• � l � " }
0.91 Ac
PID 27 � - ,�9 .,•�,,. ,. ' �•^�, /,,,.r F f "--,, f,, -. � l r' l y
AREA fj
1 � i II
I ��p�RT c��oF AREA s.�3 Ac as M " �1 p\\ `1 �� f� OBERT A SAG Tr � —
�N�//� I �= 0.73 Ac r
\ S SK23 SK 20/AREA /°° ✓00 - \
85 Ac
�. �� , 3.23 Ac = 2.
I /�
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�I�o27sa ~� WANDA WRY
, 3.45 Ac
\�\ ��
o ,o sa / ( f \ � L
STEPHE DD -�` I .,_ 4 SK24 AREA = _- �. ` , `�--r,PID:,OZ�67`
I f SK22 AREA I r - l
(_ 6.65 Ac _- u, ' � f _.._- ..__
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AMANCE
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1.69'is ` (�", SK �9N RE C - `° _ \ ` ` " o ° 'a" - _ -
-- - r W '-^. Y �- OY J. AND TICNYA B..-VEtATZtt7E-Z \
SK8 AREA = sK27 AREA - ` = 4.34 AC 4 - =- _ / r. Chad Threatt, VP
\t� p\ r' 3.33 Ac i ` �� I l \ ` , ` ` PID 10276b
-SK7 AREA SK26 AREA = ��2.07 Ac
6.79 Ac , SK25 AREA = /� \ OP F-- HO SE
1.60 Ac / I I �A7FJ�T397
D u---Jou
kkk",\ �`-`� -- SK,o AREA > _ _\ `O, ---. \'`�\ ( 1.29 Ac n `, �+o � � � P :1oz,s4�
`\ \ \ ` sg _ �` -=_ r �Y oTH J u�aobN�`�
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SK 5 AREA2.02 he
�io
P :,02697Cc ....r,, / r .--- ID: 102747
Camp
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Snow
Q
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I SK 15 AREA D: 1 z7 D�1 �2sz /
( 5.52 Ac ✓' 1 < l f r� � ^~' � I EH-A SAIJbEROle
W
oUs 1/ , , \ I \ `� \• 6 _ �` �,-- , /',.- __ �/ (. // / ,- - `,- �, �'` I / / �. ••,, '.^a'O. __.__SOd ,.. 5�"� ,,;,o`f` rr/' �r^',=. '"�. f
/ l� ,, \ J \ \D � ' I , l f _ f f / f / O / ! / ✓ \\\\\ / NO: DATE: DESCRIPTION:
1� I �cF� REVISIONS
14 f( tnk�9 PROJECT NUMBER:
\SK4.28 Ac
l � \ A �� o��o �v �( � � I i 2190335
SK 17 AREA
l r 4 Q = 4 / / / { / l - I / DRAWN BY:
.51 Ac / �,�� C \ 1 / KCG/ATC
40
REVIEWED BY:
y„ - 1I ( _ ' r ���y j I - . \ 1 / l PAS
\�� /,�-- = _._ - � � i r , / .� � \ \ �\ �7 1 / � �' I ��� .. ,�
o� ✓ \ \ ° ` ` l I t III ISSUED FOR:
�rya}Sr�oW�cAMP�o \PI �gga6` CONSTRUCTION
� \ � \ \\ ^-`"'"�v``,-_____ -�z�..a ® , �,._. --.� t ..--- -- , � -.,,,', DA't2lE`5 J IB�� p I
\ I j
e°HURL t� -` oV� I / � fj
DATE:
~ ~~I16 610.4]' ,�tc�gi �/ 7/18/19
_ e C(,pN yq .. DRAWING NAME:
\� s00 `
_
\ ��\ \ \ \ rFM��R / _� \ / r / �� l l f ( � f
\ i 1 1 �� -�-_ 0 ..PI©,02¢D r � ,,r /y DRAINAGE AREAS
1H MA5'M ER OTT
Y � 11! � � J 7 � / ,� ��1 / �.. ��yvv---_ `.. ..�,� .� �`\t � _- �... � � -' /� � `� � . � � f � �� / (I -'%,r �' --� �- � / �Il � I / � � I � � � � ✓ / / ,,,,vvy r^- . __
� DRAWING NUMBER:
l _7 m
AMANDAIVEY OOD
125 0 125 250 3T5 500,
/ \ \ � .. I ,. � 250' C304od
I
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\ Powered by partnership,
,\ 2 00 � 615 St. George Square
�kT Suite 300
k k (ryo Winston-Salem, NC 27103
\ k\x Alk o 336-842-4065
\ / " C#0430
INV. = 610.89 / 616 labellapc.com
\ / AKENBUSH RD
SITE
\x _ AV
, T T
EXIST. 12'" RCP \x \ / `��� �N cARo '%,
BOTH ENDS BURIED \ } O .`� O�' GS
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22052
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INV. 611.7q7x NrsAGINGM�e
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'till
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_.. INV. = 610.89 kq ~ }
\ k /(BURIED)
x T T T k
614.4 0 k 80' OF 24" RCP/
FES 13
\\ 01.0%r ` EXIST. 18" RCP ~ CLASS I RIPRAP \ \ \x\ I FES 1 INV. 612.59 -
6'Wx14 W THICK
WITHITH NCDOT TYPE 2 616.0
FABRIC UNDERNEATH 10
' 4
INV. - 610.49 \ \ \x\k
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(BURIED)
DI 2 r C R/W PER 8 � S6VEY
f / 1R20' 6, % \ k\ \ ©2019 LaBelle Associates
o
LC
X. EOP_j
633.06
ELEV. =E616.09 '- AGGREGATES, LLC
.s .O'er � / / \
f Mr. Chad Threatt, VP
\\
632.68
20 0 20 '�4o fio eo ROCK PIPE
INTLET \\ \
1 40' 10' X 70' PROTECTION
SIGHT TRIANGLE \\ \
630 630
DI 1
,rl
,r 633.90
833.71
633.46 — — TYPICAL ENTRANCETS ROAD SECTION
LOCATION OF - -- __ - -- z MIN (TO BE HEAVY DUTY PAVEMENT
PROPOSED / IST. ROD P ____. ___. Io" ABC STONE FROM CLARK RD. TO STA 18+94)
SEPTIC TANKS / _ _._._ __._-.. EV 61610-1_
sSTA.
f � � A 0+ 4.2
PROP. ROAD,C/ff 620 6' 30" 6" 6' Snow Camp Mine
A. -0_ 18_24 ---
— - - -- -- ---
1.5 S 9.5 B
0 / Ff ASPHALT
,
WELL AREA' 6 _.9% 3 3
10" ABC STONE 2.5" 119.0 C ASPHALT
t M 4" RC
___._.. .__- _.._-- ._. __.. 0 -0 RIP =1
NV. = 11. 2 3/31/20 NCDEMLR COMMENTS
1 7/19/19 OWNER/NCDEMLR COMMENTS
\ \ 6 10 ---- -- ---.= 61 .26 6 0 N0: DATE: DESCRIPTION:
-0 �3a REVISIONS
------- -- — . _. _. _ .__ ._. - - - - — -- PROJECT NUMBER:
2190335
DRAWN BY: KCG/ATC/BWS
_ — REVIEWED BY:
\ PAS
15` 0 15 0 45 60
I" -3U' ` \ \ ISSUED FOR:
\ \ CONSTRUCTION
3
6 00 600
10/24/18
DRAWING NAME:
o N r, -t n u°i I, 't N o FIELD SURVEY INFORMATION OBTAINED FROM ALAMANCE AGGREGATES ON JAN. 9 2018
(D a r, 10 M 00 N m N a EXISTING GROUND PROFILE AT CLARK ROAD AND WETLAND POINTS OBTAINED FROM
E ALAMANCE AGGREGATE ON AUGUST 9, 2018 PARKING AND ENTRANCE
ALL OTHER TOPOGRAPHY OBTAINED FROM GIS
3
-0+35 0+00 1 +00 2+00 ROAD DETAILS
0
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a r
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20 0 20 40 6C 80
T d
a a DRAWING NUMBER:
M m HORIZONTAL 1" = 40'
N 3 VERTICAL 1" = 4'
0 0
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L.CaGeRa
Powered by partnership.
�— 615 St. George Square
;: .. NOTES:
Suite 300
• MEASUREMENTS ARE TO THE INSIDE Winston-Salem, NC 27103
CRESTS OF THE CORRUGATION
336-842-4065
r • DIMENSIONS ARE SUBJECT TO C#0430
MANUFACTURING TOLERANCES labellapc.com
'f NOTE:
9 a'
THE SETTLING PONDS WILL BE REMOVED WHEN THE
e m
C .. _ .. Q RECLAMATION PLAN IS COMPLETED IN THE FIELD.
r, LL' •I • NOTES2
o
9
1Go' WIDTH 1. SKIMMER IS TO BE A SURFACE DEWATERING DEVICE $ °
10' SUCH AS BMP SKIMMER OR APPROVED DEVICE.
TOP OF BERM 22052 ti
•,I , v ':I FouNBnnoN WWATER1 SURFACE ELEVATIONELEVATION - 595 FT •
0 2. SKIMMER SHOULD RISE TO LEVEL OF WEIR HEIGHT IN ,•
BY OTHERS 2.5 11T .19 Fr 1 . TEMPORARY BASIN OR TO RISER INLET. �� A' '1'GIN6�
BorroM VENT ORIFICE ACCESSIBLE �i�9G� Q�O``'�
` ELEVATION 3. ROPE ATTACHED TO SKIMMER TO HELP KEEP CLEAN. THROUGH DOOR q•STIM �
. .. ,. 21'-,0.,. t
4. SIZING OF ORIFICE TO ALLOW FOR DEWATERING TIME
24'-0"ARCH SPAN
TAILING POND F1 OF 24-72 HOURS.
10' 100' WIDTH Y TOP OF BERM
t, I ELEVATION 591 FT T
WATER SURFACE I
•. r 111- T71 1
2.
BOTTOM
ELEVATION
HEABWALL
BY OTHERS
TAILING POND J2
BRIDGE PLAN SCHEDULE 40 PVC
RIGID FLEXIBLE JOINT FLOAT
NOTE
T/GRADE EACH ACH L
E TAILING POND SHALLHAYS A MINIMUM FREEBOARD OF RETRIEVAL ROPE
1.0 FEET AND SHALL HAVEVE DIMENSIONS AT THE SURFACE OF OUTLET END: CONNECTION
PRELIMINARY FOUNDATION DESIGN NOTES: 500 FEET LONG BY 100 FEET WIDE. TO OUTLET PIPE OR RISER
• PRELIMINARY SIZING BASED ON THE SLOPES OF THE OUTER SIDES OF THE TAIUNG PONDS
ASSUMED 8000 PSF BEARING CAPACITY, WILL VARY DEPENDING ON THE SURROUNDING SURFACE. ©2019 LaBella Associates
T 4'-1" OF COVER, AND CAT 773 LIVE BARREL PIPE LONGER THAN SHOWN.
y LOADING NOT INCLUDED WITH SKIMMER SUPPLIED BY USER.
+ SCOUR NOT CONSIDERED IN THIS
v PRELIMINARY DESIGN
4 FLOW
LOW
LNE FINAL DESIGN MAY VARY ALAMANCE
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24-D"ARCH SPAN a SKIMMER DETAIL Mr. Chad Threatt, VP
CROSS SECTION A-A 4 TAILING POND DETAIL c�01 NTS
C 401 NTS
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C 401 NTS
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BAFFLES WITH METAL T-POST, WOVEN WIRE NOTES:
5'-0. RETRIEVAL BAFFLES WITH METAL T-POST, FABRIC BACKING AND COIR FIBER NETTING 1. DRIVE STEEL FENCE POST AT LEAST 18 �n�Ey Mine
ROPE SKIMMER WOVEN WIRE FABRIC BACKING INCHES INTO SOLID GROUND.
OF DAM AND COIR FIBER NETTING SEE BAFFLE DETAIL SF-F' r
2. WOOD POST ARE NOT ACCEPTABLE,
PROTECT WEIR WITH FILTER C '- (THIS SHEET) �,O�,VF,�� 3. DIRECT WATER TO TOP OF BASIN USING
12" _ i-{R-I �O STABILIZED DITCH, SLOPE DRAIN PIPE
FABRIC AND RIPRAP ry'� z � w�OSTAPLESORED OR OTHER APPROVED METHOD.
FILTER FABRIC
4" OR 6" PVC n I SKIMMER WITH RETRIEVAL ROPE
m ' TOP OF
;AD WIN i ' WO r" -' - - a0 - - _ DAM 5'-0" •'"�
5'x3'xi8"
6" STONE APRON
WITH FILTER FABRIC LENGTHNOTE
1 USE FOR DRAINAGE AREAS NOT EXCEEDING FIVE ACRES. SKIMMER BASIN CROSS SECTION
2. EARTH BERM SHALL BE STABILIZED W/SEEDING ACCORDING TO -- o BAFFLE DETAIL
TOWN SPECIFICATIONS. -- -- --
LINE WEIR WITH RIPRAP NO: DATE: DESCRIPTION:
TOP OF DAM _ TOP_ OF DAM REVISIONS
DESIGN OF SPILLWAYS _ _ CORR FIBER MATTING.
� _ - - ZIP T1ES.SECURE WITH NYLON
DRAINAGE AREA WEIR LENGTH 1 WEIR J1L-iTL I! [U�T "'I '--
(ACRES) (FT) LENGTH q Ill=ill--IL [L�, WEIR PROJECT NUMBER: 2190335
1 4.0
2 6.0 I=� u� W fl-i ��. 36„
s DRCH AND BURY KCG/ATC
FILTER FABRIC ��'� m � WITH Fl�ER FABRIC �, MIN.
-� _ T = - �_ III—ID-TIT- -{SNP- FILTER FABRIC EDGE ZIP TIES DRAWN BY:
3 8.0 - (MIN. 12" OF FABRIC) i
4 1 ll.0 �I 2 `1ll= mP'
REVIEWED 8Y:
DIMENSIONS SHOWN ARE MINIMUM P PE [--[L� FLOW DIRECTION MAPLES PAS
m{ll�m _GROUND _
-11I I LI III=1I I III I I1=1I{—III LI I I 1(=III'__ ISSUED FOR:
WEIR CROSS SECTION _
� CONSTRUCTION
-"'- T I I1=1I�i I I III-T-1Zi-I NI I I1 III_
T—Iu Iii_iIITTLI III-I ](1 ]Z�I
MAINTENANCE " ITN LII-IT MIN. DATE:
PERSPECTIVE VIEW WOVEN WIRE FABRIC. it=T�
• INSPECT TEMPORARY SKIMMER BASIN AND EMPTY SKIMMER OF ALL DEBRIS AFTER EACH PERIOD OF SIGNIFICANT RAINFALL REMOVE SECURE WITH NYLON ZIP TIES. I F 7/18/19
SEDIMENT AND RESTORE BASIN TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN II I I I-�
DEPTH OF THE BASIN. PLACE THE SEDIMENT THAT IS REMOVED IN A DESIGNATED DISPOSAL AREA. REPAIR BAFFLES.
• CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT S(lrTt DRAWING NAME:
IS A MINIMUM OF 1.5 FEET BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT T-POST
m TO SLIGHTLY ABOVE DESIGN GRADE. ANY RIPRAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY.
o • STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE THE SEDIMENT POOL AND DOWNSTREAM FROM THE BASIN IMMEDIATELY
AFTER CONSTRUCTION WITH SEEDING AND MATTING, AS NEEDED.
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615 St. George Square
Suite 300
Winston-Salem, NC 27103I
336-842-4065
C#0430
i
Channel Side Slope Bottom Width Discharge Bottom Stabilization Side Stabilization I a b e l l a 0.0 O m
Description Max. Bed Slope P
Number (H:V) (ft) (cfs) Method Method
i
1 FES 2 to STA. 6+50 2.90% 3:1 2 7.05 Curlex I Curlex 1 I
2 FES 1to Sta. 6+50 2.96% 3:1 2 12.66 Curlex I Curlex I
3 West Side Access Road Sta. 7+00to 14+00 4.10% 3:1 2 3.5 Curlex I Curlex I I ��``�tt t CArtrI-It T
4 East Side Access Road Sta. 8+50to 14+00 3.63% 3:1 2 5.12 Curlex I Curlex I •••^RQ( ..
5 Access Road (West Side) Sta. 18+50to SK 6 11.25% 3:1 2 4.55 Curlex III Curlex 111 0R A
6 SK 8to Stream Buffer 6.93% 2:1 3 13.64 Curlex III Curlex III C _
7 Exist. 18" RCP to FES 2 1.00% 2:1 1 20.59 Curlex I Curlex I 22 52
8 5K Ito Sta. 20+00 3.25% 2:1 2 4.55 Curlex I Curlex I F Cj
9 SK 7 to Sta. 20+00 3.50% 2:1 2 5.81 CurlexI Curlex ) ��A7'.TGINBEIto
.•
_ TRENCH WIDTH �= TRENCH
l I I GRADE WIDTH�'�--�
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C 402 NTS O Q _A
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12" ICI °. ° - ..UTINE <.' aE I�. 6.. —..I
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SECTION A—A
PLAN VIEW Mr. Chad Threatt, VP
I
s ANTI-SEEP COLLAR
C 402 NTS
Snow Camp Mine
I
RIPRAP APRON
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3 TIMES INNER I T
DIAMETER (LDJ — —PIPE — FES PIPE FES
- - - - 1 L —
NOTES: ---' -- -- ( --
RIPRAP APRON ) t = LENGTH OF THE RIPRAP APRON. NO, DATE: DESCRIPTION:
2) L2 = RIPRAP TO BE INSTALLED UNDERNEATH 1/3 THE LENGTH REVISIONS
PLAN VIEW OF FLARED END SECTION (FES). PROJECT NUMBER:
PLAN VIEW 3) d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT 2190335
NOTES. LESS THAN 6 INCHES. DRAWN BY:
4) IN A WELL—DEFINED CHANNEL EXTEND THE APRON UP THE KCG/ATC
1) L1 = LENGTH OF THE RIPRAP APRON. CHANNEL BANKS TO AN ELEVATION OF 18 INCHES ABOVE THE REVIEWED BY:
2) L2 = RIPRAP TO BE INSTALLED UNDERNEATH 1/3 THE LENGTH MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE BANK, PAS
OF FLARED END SECTION (FES). SEE NOTE 4 Lt WHICHEVER IS LESS.
Lt 3) d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS ISSUED FOR:
THAN 18 INCHES. _ — — __ 5) A FILTER BIANKET OR FILTER FABRIC MUST BE INSTALLED CONSTRUCTION
— 4) A FILTER BLANKET OR FILTER FABRIC MUST BE INSTALLED ` BETWEEN THE RIPRAP AND SOIL FOUNDATION (NCDOT TYPE 2).
PIPE BETWEEN THE RIPRAP AND SOIL FOUNDATION (NCDOT TYPE 2). PIPE FES ` DATE:
_ -- - - - -- — - - 7/18/19
ull
_ — � DRAWING NAME:
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FILTER FILTER
L2 FABRIC L2
SECTION 'A-A' SECTION 'A-A' FABRIC
SITE DETAILS
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PARKING SPACE PAVEMENT MARKINGS 615 St. George Square
SIGNAGE—Q) (a) (D (B) Q (D (8) OC
(MUST NOT OBSTRUCT Suite 300
ACCESSIBLE ROUTE) ACCESSIBLE ROUTE Winston-Salem, NC 27103
­ [;f ///I (SEE NOTE 2) 336-842-4065
111A 2% MAX, SLOPE IN ANY
a /,//] DIRECTION ACROSS THE C#0430
HI-VISIBILITY CROSSWALK STANDARD CROSSWALK AS SHOWN PARKING/UNLOADING SPACES.
ON PLANS labellapc.com
'a STOPBAR NOTE
>8 0 ONE OUT OF EVERY
9 M-4 c") SIX (6) ACCESSIBLE
C'C' SPACES, BUT NOT
> v
LU U-
> M4 LESS THAN ONE, IS
Z G,0(D REQUIRED TO BE VAN 111111,
=MOO SIDEWALK 4' MIN, IN. MITE < f- I— ACCESSIBLE, PER
Z�Mr�ln TO P5 STRI CROSSWALK LINES ��LL.�LU VAN CA
00� /—DETECTABLE WARNING CROSSWALK C ALK M 0� SECTION 1106.5 OF
< ACCESSIBLE ACCESSIBLE NC STATE BUILDING ......
DOMES
0 G, SPACE SPACE
I . (OPTION 1) (OPTION 2) CODE
> 4' MIN. -1 5:
EDGE OF TRAVEL N f-
TO CROSSWALK LINE 0-
UJ GENERAL NOTES:
CURB RAMP
000000 nA 22052
1. A GROOVE JOINT 1" DEEP WITH 1/8" RADII SHALL BE REQUIRED IN THE CONCRETE \42111
SIDEWALK AT 5' INTERVALS. ONE 1/2" EXPANS10N JOINT WILL BE REQUIRED AT GINS
INTERVALS OF NOT MOR R7-8P
SIDEWALK MUrCD RESERVED
[[AX�j R7 I
'�A
E THAN 45' AND MATCHING EXPANSION/CONSTRUCTION JOINT IN MUTCD
L ADJACE14T CURB. A SEALED 1/2" EXPANSION JOINT WILL BE REQUIRED WHERE THE 12"XG"
4 SIDEWALK JOINS ANY RIGID STRUCTURE. 12"XIB" PARKING
M CLaW SPACE 24" MITE 4' 4 L
z CROSSWALK LINE M "4 MUTCD
A 1',
CD 2. SIDEWALK AT DRIVEWAY ENTRANCES TO BE 6" THICK. PARKI G R7-8
LL
U) cn RESERVED 12*xlB*
24" GAP
CURB RAMPS 3� WIDTH OF SIDEWALK ON THOROUGHFARE STREETS SHALL BE A MINIMUM OF 6'. WIDTH MUTCD AN - ------
M > z 0 �e '.� ..' �: OF SIDEWALKS IN THE CENTRAL BUSINESS DISTRICT WILL BE DETERMINED BY THE CDOT. PARKING - I
_j F&
Z R7 13
OM < 4. WIDTH OF SIDEWALKS ON NON—THOROUGH FARE STREETS SHALL BE BASED ON TYPICAL
c') M � M TIME 7
-I EC 4' X 4' STREET SECTION, A MINIMUM OF 5'. SIDEWALK TO BE POURED TO END OF RADIUS AT 12"X18"
:0 M CL R SPACE oc he I
cn INTERSECTING STREETS.
z 0 '[M T
z —1 M GROOVE JOINT IN SIDEWALK 5. CONCRETE COMPRESSIVE STRENGTH SHALL BE 3600 PSI. IN 28 DAYS. OPTIONAL PA IMUM
0 EC cc 6. ZONING CONDITIONS MAY REQUIRE ADDITIONAL WIDTH SIDEWALKS WHICH SHALL ACCESIBLE ENX CUDSM 50.10C
P !N:AI UM
M
LTY]
0 < z SUPERSEDE THESE STANDARD DIMENSIONS SHOWN. LOADING $250: 12'xg"
> 10' MIN. WIDTH CI
z < ZONE SIGN
U) = 0 7. LIDS FOR JUNCTION BOXES AND UTILITY VAULTS SHALL BE NON—SKID AS SPECIFIED BY
07 ;K 1ju ENGINEER. MAXIMUM
U) r= PENALTY CLOSM 50.10C
>* ILM 8. JOINT MATERIALS SHALL LIMIT SHRINK/SWELL SO POST CONSTRUCTION INSTALLATION $250 12"xg"
Z
Lij
2q G) Z 1- THE MINIMUM WIDTH OF STANDARD CROSSWALKS IS 6 FEET. THE MINIMUM WIDTH OF HI-VISIBILITY CROSSWALKS IS 10 FEET. 0 SEE STANDARD NO. 50.10C FOR
LEGEND 1/8' RADIUS RESULTS IN A MAXIMUM OF 1/4- FROM FLUSH. I
IL SUPPLEMETAL SIGN DETAIL
0-
2� SET BACK DISTANCE FROM INSIDE CROSSWALK MARKING TO NEAREST EDGE OF TRAVEL IS 41 MIN. 41 DIRECTION OF 0
0 TRAFFIC FLOW z
3- BEYOND THE CURD FACE, A CLEAR SPACE OF 4' X 4' FEET MINIMUM SHALL BE PROVIDED WITHIN THE MOTH OF THE CROSSWALK, EXAMPLE SIDEWALK CONSTRUCTION DIMENSIONS:
CURB RAMP WITH
DETECTABLE
4
4- PLACE STOP BARS A MINIMUM OF 4 FEET FROM NEAREST CROSSWALK LINE. STOP MRS AT SIGNALIZED INTERSECTIONS SHOULD WARNING DOMES WIDTH EM CROSS—SLOPE
BE COORDINATED WITH THE SIGNAL DESIGN SECTION OR AS DIRECTED BY THE ENGINEER,
1.56%
�A. 4' 1"
.A 5' 1. 1,67%
5� CURB RAMPS SHALL BE CONSTRUCTED IN ACCORDANCE TO THE LATEST NCDOT ROADWAY STANDARD DRAWINGS�
1.56% 2019 LaBella Associates
4 6' 1 1.56%
I. ALL 12'x18" ACCESSIBLE SIGNS SHALL BE MOUNTED AT 7 FEET FROM GRADE
H&2- L&�!L
1/2- EXPANSION JOINT
1 0�1 TO BOTTOM EDGE OF SIGN FACE (MUTCD). MOUNTING HEIGHT CAN BE REDUCED
TO 5 FEET IF PLACED IN AN AREA BETWEEN SIDEWALK AND BUILDING FACE IN
WHICH PEDESTRIANS ARE NOT EXPECTED TO USE.
JOINT FILLER
0 D / 1.50% (2.00% MAX.)
Z5 c: 2. IF ACCESSIBLE ROUTE IS A RAISED SIDEWALK AREA, THEN RAMPS ARE REQUIRED
1/2' 22 AT LOADING ZONE AREA, MAINTAIN MIN. 4' WIDE CONTINUOUS PASSAGE.
eq
PROPOSED CURB & GUTTER 3. VER71CAL CLEARANCE FOR VANS MUST BE GREATER THAN 98-INCHES.
TRANSVERSE EXPANSION
4. THIS DETAIL IS TO PROVIDE GENERAL GUIDANCE FOR PARKING LAYOUT AND
CROSSWALK DETAIL ALAMANCE
JOINT IN SIDEWALK DESIGN; REFER TO MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MUTCD)
NTS -PROPOSED 4" CONCRETE SIDEWALK U.S. DEPARTMENT OF TRANSPORTATION AND NORTH CAROLINA DEPARTMENT OF
TRANSPORTATION SUPPLEMENT AND NO BUILDING CODE FOR ADDITIONAL
DETAILS SHOWING EXPANSION JOINTS INFORMATION. AGGREGATES, LLC
IN CONCRETE SIDEWALK Mr. Chad Threatt, VP
ACCESSIBLE PARKING AND SIGNAGE DETAILS
�G 403 NTS
SIDEWALK DETAIL
�C 40V NTS
TOP OF BERM SWALE
2'
2.51 30.0' 41
3iy
A4
NOTES: - -------- Snow Camp Mine
LARGE TREES SHALL BE 2" CAUPER AND 12! HEIGHT H STABILIZE ROAD SIDE DITCHES
AT PLANTING, MUED AND BURLAP. TREES SHALL BE DOUBLE-STAGGERED WITH 8-10' CENTERS 12"CRUSHER RUN OR WITH 8'WIDTIJ CURLEX III HIGH
SEED THE ENTIRE BERM AFTER TREE AND SHRUB PLANTING WITH PANICUM VIRGATUM, SWITCH CABC STONE VELOCrFY MATTING OR
GRASS, AT A RATE OF 8 LBS/ACRE. DO NOT MOW. APPROVED EQUIVALENT,
SEE TABLE BELOW FOR ALLOWABLE TREES AND SHRUBS.
r3 HAUL ROAD TYP. SECTION
�C 40V NTS
LARGE TREE
LARGE TREE
Scientific Name Common Name
Pi�usT.�d. LobloflyPine
NO: DATE7 ---:7—DESCRIPTION:
16'WIDE 2:1 SLOPE- 16'WIDE 2:1 SLOPE- IREVISIONS
8'HIGH AT TOP 8'HIGH AT TOP PROJECT NUMBER:
2190335
DRAWN BY:
PULL POST SINGLE STRAND KCG/ATC
MINE SIDE ROAD/AD,1ACEXr SIDE ASSEMBI Y BA -ED WIRE REVIEWED BY: PAS
10' "T" POST (100' iNCREMENT) 8" DIA. V "T" POST
18'BERM TOP (20' INCREMENT) ISSUED FOR:
CONSTRUCTION
...........q
SIDE SLOPES &
"Pg'
HAV O.0 14'Iw IT
HIA M
"r 7/18/19
R
PRI
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8' MIN DRAWING NAME:
HM 3 R GRADE
BURIED
'C! OVERBURDEN (TYR)
SOIL CUT
50, MO�
"E,
SITE DETAILS
BARRIER BERM DRAWING NUMBER�
E FIXED KNOTTED WIRE FENCING PERIMETER FENCE DETAIL
M I NTS
7�
NTS
bs
C403

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615 St. George Square
Suite 300
Winston-Salem, NC 27103
336-842-4065
C#0430
labellape.com
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(SURGE TONE) AS 12'M111N
REQUIRED
CONSTRUCTION SPECIFICATIONS
1,CLEAR DIE ENTRANCE AND EXIT AREA OF ALL VEGETATION,POUTS,AND OTHER OBJECTIONABLE
MATERIAL AND PROPERLY GRADE IL
2,PLACE THE GRAVEL TO THE SPECIFIC GRADE AND DIMENSIONS SHOWN ON THE READS AND
SMOOTH IT,
3. PROVIDE DRAINAGE 70 CARRY WATER TO A SEDIMENT TRAP OR OTHER SU➢ABLE OUTLET.
4,USE NONWOVEN GEOTEXTILE FABRICS BECAUSE THEY IMPROVE STABILITY OF THE:FOUNDATION IN LOCATIONS
SUBJECT TO SEEPAGE 08 NIGHT WATER TABLE SEEDING
raA!tJTBNANCE, SOIL AND VEGETATION
MAINTAIN THE GRAVEL PM IN A CONDITION TO PREVE14T MUD OR SEDIMENT FROM LEAVE NG THE
CONSTRUCTION SITE THIS MAY REQUIRE PERIODIC TOP DRESSING WITH 2 INCH STONE, AF7EREACH PER NC WILDLIFE REQUEST,OVER SEED DISTURBED AREA WITH A MIXTURE OF RED CLOVER,
RAINFALL,INSPECT ANY STRUCTURE USED TO TRAP SEDIMENT AND CLEAN IT OUT AS NECESSARY, CREEPING RED FESCUE,AND A GRAIN SUCH AS RYE,OAT OR WHEAT. THE SEEDING MIXTURE,
IMMEDIATELY REMOVE ALL OBJECTIONABLE MATERIAL SPILLED,WASHED OR TRACKED ONTO PUBLIC SEEDING RATE,AND SOIL PREPARATION IS TO BE DETERMINED BY AN ENVIRONMENTAL
ROADWAYS.
PROFESSIONAL AND SUBMITTED PRIOR TO APPLICATION.
10 `TEMPORARY CONSTRUCTION ENTRANCE s- ,PERMANENT SEEDING SCHEDULE --
0501 / __. ..__ __. _...C501
©2019 LaBella Associates j
CONCRETE
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b& P,°o aoSaOP E¢oPoo g°•J°4°o%d 4d:b o•°b,°o8%o^o P•o SEDMENT TRAP
OUTLETWEIR
TIE INTO R UA
TRAP OUTLET ART :
APRON LENGTH NONWOVEN EXTRA STRENGTH PER US 2:1 SLOPE. �6"OIA PRAP
.FlI
FABRICS (US 205 NINCDOT TYPE 2• GRAVEL FILTER 1>
L9'
�18, OR APPROVED EQUIVALENT TEM11PORARV WARNED WIRE SCREEN
oWnuv SEDIMENT STONE 1
POOL WIRE SCREEN
Jawsrmrs avAuclmnnu exclwn PrnumlN sFP.TIONn-A
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2 MAX. 16'
APRON
THICKNESS ' �
INSTALLATION OF NETTING AND MATTING SECTION A-A .�.1
CONSTRUCTION SPECIFICATIONS
PRODUCTS DESIGNED TO CONTROL EROSION SHOULD BE INSTALLED T
IN ACCORDANCE WHY{MANUFACTURER'S INSTRUCTIONS.ANY MAT CONSTRUCTION SPECIFICATIONS: SEDIMENT DROPINLET 1. ENSURE THAT iHF.SUOGPADP FOR THE RIPRAP FOLLOWS THE BECOME[I LINES pHD
OF BLANKET-TYPE PRODUCT USED AS A PROTECTIVE MULCH SHOULD I.ENSURE THAT THE SUBGRADE FOR THE FILTER AND RIPRAP FOLLOWS THE REQUIRED LINES AND GRADES VATH GRATE GRADES SILOWN IN THE PLAN.COMPACT ANY RLL.REQUIRED IN THE S'JGGRADE TO
PROVIDE COVER BEAT LEAST 30`%OPTIC SURFACE WHERE IT IS APPLIED, SHOWN ILL THE PLAN,COMPACT ANY FILL REQUIRED Ili THE SUBGRADE TO THE DENSITY OF THE 7IIEDF.t:SITYOFPiESURROUNDIHGUNOISTUITBEDIIATERIAL.LOWAREASINTHE
SURROUNDING UNDISTURBED MATERIAL LOWAREAS IN THE SUBGRADE ON UNDISTURBED SOIL MAY SECTION SUBGRADE ON UNDISTURBED SOIL RAY ALSO BE CUM BY INCREASING THE RIPRAP
ALSO RE FIT ED BY INCREASING THE RIPRAP THICKNESS. CONSIFlUC710N SPECIFICATIONS: THICKNESS
t.APPLYOME,FERTILIZER AND SEED BEFORE LAVING THE NET OR MAT. 2, TI IF RIPRAP AND GRAVEL FILTER MUST CONFORM TO THE SPECIFIED GRADING LIPAITS SHIPYN 014 THE 2.RIPMP MAYI THICK BE NESS D BY
BIPOLAR
I
IF OPIRLWFAVE NETTING 13 USED,LIME MAY BE INCORPORATED BEFORE PLANS. i.LAVE ONE FLOCK ON EACH SITE OF THE STRUCTURE ON ITS SIOE IN THE BOTTOM ROW TO ALLOW P001. 3 THE MINIJ,IVA1 THICKNESS OF THE RIPflAP SHOULD BE 7.5 TIMES➢{f.MAXIMUM STONE
INSTALLING THE NET AND FERTILIZER AND SEED SPRAYED ON AFTERWARD. 3. FILTER CLOTH,WHEN USED,MUST MEET DESIGN REQUIREMENTS AND BE PROPERLY PROTECTED FROM DRAINAGE.THE FOUNDATION SHOULD BE EXCAVATED AT LEAST 2-INCHES BELOW THE CREST OF THE DIAMETER.
PUNCHING OR TEARING DURING INSTALLATION.REPAIR ANY DAMAGE BY REMOVING THE RIPRAP STORM CRAIG. PLACE THE BOTTOM ROW OF BLOCKS AGAINST THE EDGE OF THE STORM DRAIN FOR 4,RIPRAP MAY BE FIELD STONE OR ROUGH QUARRY STONE.IT SHOULD BE HARD,
2.START LAYING THE NET FROM THE OW NE THE CHANNEL OR SLOPE THE
LATERAL SUPPORT AND TO AVOID WASHOUTS WHEN OVERFLOW OCCURS.IF NEEDED,GIVE LATERAL ANGULAR,HIGHLYWEATHER RESISTANT AND WELL GRADED,
AHOTSSHOUDACING OVERRPIA FAQINIUMO IRECLO IF THEVER DANIAGTHE 15 ETENSIVALLLACE TIDNG
UNROLL li DOWN THE GRADE.ALLOW NETTING TO LAY LOOSELYONTtiE SUPPORT TO SUBSEQUENT ROYJS BYPLACIt1G2x4'V1000$TU0S7HROUGH BLOCK OPENINGS, S.f,ONSiflUCT THE APRON ON ZERO GRADE.WITH NOOVcRFALL AT THE ENO.MAKE THE
i
JOINTS SHOULD OVERLAP A rdINIdUh1 OF 1 Fi.IF THE DAMAGE IS EXTENSIVE,REPLACE TI IE ENTIRE SOIL BUT WITHDW WRINKLES-DO NOT STRETCH. TOP OF 7JIE RIPM.P A7 TtiF DOWNSTREAM EtJDtEI'EL'NITII THE REGEMNG AREA OR
FILTER C AYB 2. BLOCK OPENINGS
HARDWARE CLOVE ON PLACE
AMOLE WIRE MESH WiTIi OPENINGS ALLBit3 TON6-INETHE NET,COVER UPSLOPE END INASLOTOR AS SHOLNO LESS /2- SLSURET THAT
IT.
4.flIPRAP MAYBE PLACED BY EQUIPMENT,BUT TAKE CARE TO AVOIDCAh1AGING THE FILTf.H. BLOCK OPENINGS TO HOLD GRAVEL IN PLACE.
THAN DETAIL, STAPLE
THE GET IR1 SOIL,2-IAND HES ACROSST STOP END
T F. ENSURE THAT THE APRON IS PROPERLY FEIGNED WITH THE RECEIVING STREAd AND
5.THE MINIMUM THICKNESS OF THE RIPRAP SHOULD BE 1.571M H THE PBE HARM STONE DIAMETER. 3
THIS DETAIL. STAPLE 7FIE NET EVERY I7..-INCHES ACROSS THE TOP END AND 3. ON A 2:11 SLOPE OR I-iD SMOOTH
DIAMETER,PLACED DDT
ASHEDHTONE IS THE BLOCK CONDITIONS.
PLACE ii THEUGIf01R ITS ECTION LENGTH IFAGORVE IS OWEDEDIDFR SITE
6.RIPRAP 41AV BE FIELD STORE OR ROVGII QUARRY STONE. IT SHOULD RE HARD,ANGULAR,HIGHLY AN FARE LAID SIDE BOUND THE EDGES AND EDGES SHOULD BE STRIPS OF RECOMMENDED,
ENDEDOR FLATTER AND SN1004i li TO AN EVEN GRADE.DDi#57 WASHED STONE.IS COMOHIOtES,PLACE C N STR UPPER SECTION FALL DISTUIN.
WEATHER-RESISTANT AND WELL GRADED. p'�'9 gp
NET ARELAIDSIED BY TOGETH THE ER.EACH
EDGESSOULD ALSO
RECOMAMENDED. 7. P,1NIEDIATEIY AFiEft CONSTRUCTION,SiFl01l¢E .LCDITl1BBEOANF.AS VVIiIi VEGETATION
. ��� �a1�A UP9'I��
7.CONSTRUCT THE APRON ON ZERO GRADE PATH ND OVERFALLAT THE END.MAKE 1tIE TOP OF 71{E ®tl{F/f
34NCHES STAPLED i0GET1{ER.EACH STRIP OF NETTING SHOULD ALSO BE p STAPLED DOWN THE CENTER,EVERY 3 FT.DO NOT STRETCH THE NET WHEN
RIPRAP AT THE DOWNSTREAM END LEVEL VETO THE RECEIVING AREA OR SLIGHTLY BELOW H. h1AINTFNANCE:
APPLYING STAPLES. B.ENSURE 711AT THE APRON IS PROPERLY ALIGNED WITH THE REGEMNG STREAM AND PREFERABLE 1. INSPECT THE BARRIER AUER EACH MIN AND MAKE REPAIRS AS NEEDED.
STRAIGHT THROUGHOUT ITS LENGTH.IF A CURVE IS NEEDED TO FIT SITE CONDITIONS,PLACE.IT IN THE 2.REMOVE SEDIMENT AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR SUBSEQUENT MAINTENANCE
MAINTENANCE: UPPER SECTION OF THE APRON. RNr15.
9. IMMEDIATELY AFTER CONSTRUCTION,STABILIZE ALL DISTURBED AREAS WITH VEGETATION. INSPECT BECAME OUTLET TRUCTURES AFTER HEAVY RAINS TO SGG IGAW EROSION
INSPECT ALL MULCHES PERIODICALLY,AND AFTER RAINSTORMS TO CHECK 3,WHEN THE CONTRIBUTING DRAINAGE AREA HAS BEEN ADEQUATELY STABILIZED,REMOVE ALL AROUND OR BELOW THE RIPRAP HAS TAKEN PLACE Oil IF STONES HAVE BEEN
FOR RILL EROSION,DISLOCATION,OR FAILURE.WHERE EROSION IS OBSERVED, MAINTENANCE: MATERIALS AND ANY UNSTABLE SOIL AND EITHER SALVAGE OR DISPOSE OF IT PROPERLY.BRING DISLODGED.IMMEDIATELY MAKE ALI.NEEDED REPAIRS TO PREVENT FURTHER
APPLY ADDITIONAL MULCH.IF WASHOUT OCCURS,REPAIR THE SLOPE GRADE, INSPECT RIPRAP OUTLET STRUCTURES AFTER HEAVY RAINS TO SEE IF ANY EROSION AROUND OR BELOW THE DISTURBED AREA TO PROPER GRADE,THEN SMODTII AND COMPACT IT.APPROPRIATELY DAMAGE,
RESEED,AND REINSTALL MULCH.CONTINUE INSPECTIONS UNTIL VEGETATION THE RIPMP HAS TAKEN PLACE OR IF STONES HAVE BEEN DISLODGED.IMMEDIATELY MAKE ALL NEEDED STABILIZE ALL BARE AREAS AROUND THE INLET.
IS FIRMLY ESTABLISHED. REPAIRS TO PREVENT FURTHER DAMAGE.
TEMPORARY BLOCK TEMPORARY SEDIMENT
B ,,CHANNEL PROTECTION , 7 ^,,RIP RAP OUTLET PROTECTION B . ^,AND GRAVEL DROP INLET PROTECTION 5 TRAP RIP RAP OUTLET PROTECTION
C501 �^ C501 ! 0501 C501 `
i
IXKF�
4'MIN.
�y (
1 $ NEW RIPMPTO HELD OPEC STAKES 3:1 SMAT _
A 7 EXPEND TO TOP EXISTING
MIN. COFSGECHNGHANNEL
BOTTOM WIDTH GRADE WIRE SLUDGE
- PG" Z / - NO: DATE: DESCRIPTION::
o df� z 1� �1 ITS _
CHANNEL BANKS SI1PPoRi FENCE m '�F SQ \ uu EA
U o -�- P1ATiC �� REVISIONS
OR'
O OQ STEEL POST TYP- PIPE(PF,R FLAN} I� ( ---
R °� - °G° DL7EnFABRIC - COMPACTEDVILL I- PROJECT NUMBER:
ABRIC �i � ) oUILEf2E 1���E INLET I FLOW 2190335
CONTROL STONE _ DRAWN BY:
WASHED STONE
(B°TOP LAYER) mRIPRAP j0 m _ _ ° Qo1L KCG/ATC
_O �V4 712'
URY ENDS OF THICKNESS MATERIAL SPECIFICATIONS: �� H a c STONE INLET
J�oQ w FILTER FABRIC REVIEWED BY: PAS
E z 1.USE A SYNTHETIC FILTER FABRIC OF AT LEAST 95%B"VEIGHT OF POLYOLEFINS OR POLYESTER, AUW Qj PROTECTION
FILTER '+' MINIMUM O
FABRIC ,:J $ ^'@j TYPICAL MINIMUM'G50'STONE IS CERTIFIED BYTHEMANUFACTUREROR SUPPLIER AS CONFORMING TO THE REOUIREMENTSINBEEN
4'M111N. (TYP,)
SIZE AS INDICATED LEVEL - -
2.SYNTHETIC ALLEN FABRIC SHOULD CONTAIN ULTRAVIOLET RAY INHIBITORS AND STABILIZERS. SECTION - ISSUED FOR: �(}} •�-L� (�-T- /�
SECTIONA-A 3, ENSURE T14AT POSTS FOR SEDIMENT FENCES ARE133 LOhINEAR FEET STEEL WITH A MINIMUM LING711 CONSTRUCTION
IIUiJ I Il1N
FILTER FABRIC TYPICAL' OF 5-ffM MAKE SURE THAT STEEL POSTS HAVE PROJECTIONS TO FACILITATE FASTENING THE FABRIC. �l C
4.FOR REINFORCEMENT OF STANDARD STRENGTH FILTER FABRIC,USE WIRE FENCE WED{A MINIMUM 14- PLANMLW
CONSTRUC710N SPECIFICA710NS: GRADE AND A MAXIMUM MESH SPACING OF 6 INCHES,
STANDARD T-SEfiION
i. PLACE STONE TO THE LINES AND DIMENSIONS SHOWN IN THE PLAN ON A FILTER SHORTAGE PREPARATION-PREPARE THE SUBGRADE FOR RIPRAP AND FILTER TO THE REQUIRED LINES DATE:FABRIC FOUNDATION. AND GRADES INDICATED ON THE PANS.COMPACT ANY FILL REQUIRED IN THE SUBSIDIES TO A
CONSTRUCTION SPECIFICATIONS CONSTRUCTON SPECIFICATIONS 7/1 8/1 9
2. KEEP THE CENTER STONE SECTION AT LEAST 9 INCHES BELOW NATURAL GROUND DENSITY APPROXIMATING THAT OF THE SURROUNDING UNDISTURBED MATERIAL OR OVERFILL I 1.CONSTRUCT THE SEDIMENT BARRIER OF STANDARD STRENGTH OR EXTRA STRENGTH SYNTHETIC FILTER ACOMMON FAILURE OF SLOPE DRARIS IS CAUSED I3Y WATER SATURATING THE SOIL
LEVEL WHERE THE DAM ABUTS THE CHANNEL BANKS DEPRESSIONS WITH RIPRAP.REMOVE BRUGH,TREES.STUMPS AND OTHER OBJECTIONABLE MATERIAL. FABRICS. AND SEEPING ALOM THE PIPE AILS CREATES VOIDS FROM CONSOLIDATION AND
CW THE SUBGRADE SUFFICIENTLY DEEP THAT THE FINISHED GRADE OF THE RIPRAP WILL BE AT THE 2, ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT EXCEED IFNBCHES ABOVE THE GROUND P INGANOCNRESWASHOUT&Pl1OPERFACKFILLINGAROUNDAt1D@4DERTHE I
3, EXTEND STONE AT LEAST 1,5-F7 BEYOND THE DITCH BANKS TO KEEP OVERFLOW ELEVATION OF ME SURROUNDING AREA.CHANNELS SHOULD BE EXCAVATED SUFFICIENTLY TO ALLOW SURFACE(HIGHER FENCES MAY IMPOUND VOLUIAES OF WATER SUFFICIENT TO CAUSE FAILURE OF THE PPE'HAUNCIT ES'W iH STABI E SOII.MATERIAL ADD HAND COMPACTION IN 6INCH DRAWING NAME:
WATER FROM UNDERCUTTING THE DAM AS IT RE-ENTERS THE CHANNEL PLACEMENT OF THE RIPRAP IN A MANNER SUCH THAT THE FINISHED INSIDE DIMENSIONS AND GRADE STRUCTURE).
L JETS 70 ACHIEVE CUM CONTACT BETWEEN THE PIPE AND THE 901E AT ALL.POINT S Witt
i
� OF THE RIPRAP MEET DESIGN SPECIFICATIONS. I 3.CONSTRUCT THE FILTER FABRIC FROM ACONTIGUOUS ROLL CUT TO THE LENGTH 0F THE BARRIER TO EI PMINAiE THIS TYPE OF FAR TOE I
4, SET SPACING BETWEEN DAMS TO ASSURE THAT THE ELEVATION AT THE TOP OF THE AVOID JOINTS,MIE14 JOINTS ARE NECESSARY,SECURELY FASTEN THE FILTER CLOTH ONLY AT
vi LOWER DAM IS THE SAME AS THE TOE ELEVATION OF THE UPPER DAM. SYNTHETIC FILTER FABRIC-PACE THE FILTER FABRIC DIREGILVON THE PREPARED SUFFRAGE OVERLAP SUPPORT POST WITH OVERLAP TO THE NEXT POST. I, PLACE SLOPE DRAINS ON UNDISTURBED S01L OR 1^JEL6CULiPf.CTEU FILL A7 LOftSIGhIS
m THE EDGES BYAT IEAST 12-INCIIES AND SPACE ANCHOR PINS EVERY 3-FEET ALONG THE OVERLAP.BURY 4,SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE MESH FASTENED SECURLY i0 THE UPSLOPE SIDEG OWN y 5.PROTECT THE CHANNEL DOWNSTREAM FROM THE LOWEST CHECK DAM, THE
UPPER AND LOWER ENDS OF THE CLOTH A MININIUM OF 12-INCHES BELOW GROUND.TAKECARE OF THE POSTS USING HEAVY DUTY TIE WIRES.EXTEND THE MERE TIME SUPPORT TO THE BOTTOM OF THE SLIGHTLY
GELEVA71OPE illSFGONT HF PLANS.
t CONSIDERING THAT WATER WILL FLOW OVER AND AROUND THE DAM. 2. SLIGIIiIV SLOPE SEGiIOtl OF PINE UNDER THE LIKE TOWARD 17S OUTLET,
N NOT TO DAMAGE THE CLOTH WHEN PLACING RIPMP,IF DAMAGE OCCURS,REMOVE THE RIPMP AND TRENCH
B MAKE SURE THAT THE CHANNEL REACT{ABOVE THE MOST UPSTREAM DAM REPAIR THE SHEET BY ADDING ANOTHER LAYER OF FILTER MATERIAL WITH A MINIMUM OVERT AP OF 5.WHEN A WIRE MESH SUPPORT FENCE IS USEO,SPACE POSTS A MAXIMUM OF B FEET APART.STEEL 3. fiANU TARll'iHO SOIL I1tJ0Ei;AND AROUND 7HE ENIFlANCE SECTION IN LIFTS tJ(Ti TO
SS IS STABLE Ili
6 INCHES.
ax THE
SHEET THE DAMAGED AREA.IF EXTENSIVE DAMMAGEISSUSPECTED,REMOVE AND REPLACE WIRESUPPORTPOTSSRT FENCE DRIVEN LSHALLYINTO AGRICU ROUND TOATY MINIMUM GAGENNINCHES, ypyM��qq �®�g� yNg i
AD Z CHECK THAT ENTRANCES BELOW N{EENTIRESHEET EROSION AND
i STEEL
MESH WITH
4 FENCE MATERIAL SHALL BE AGRICULTURALQUALI7V f 4 GAGE ANNEALED 4. ENSURE THAT FILL OVER THE DRAIN AT IQ7 AND E SLOPE HAS N:INIMUhi
C9 CHECK DAMAS,ARE NOT SUBJECT TO DAMAGE OR BLOCKAGE FROM DISPLACED ' BTEEL WIRE V417H A 4'x 5°MAX.SPACING PATTERN. 016".ENSIOiJS OF i�Fi.OEF'DI,4 U.TOP WIOii I AM1O 3:1 46E SLOPES.
�
STONES. WHERE LARGE STONES ARE USED OR MACHINE PLACENIEW IS DIFHCULY,A 4 INCH LAYER OF FINE 6.IXFM FT STRENGTH FILTER FABRIC WITH 6 POST SPACING DOES NOT REQUIRE WIRE MESH SUPPORT 5. ENSURE RIAI ALL SLOPE DRAIN CONNECTIONS ARE WATERTIGHT.
i I GRAVEL OR SAND MAY BE NEEDED TO PROTECT THE FILTER CLOTH FENCE,TIE WIRE 7HE FILTER FABRIC DIRECTLY 7O ROB 15, SEDIMENT
E c�'T TAAINTENANCE' T EXCAVATE A TRENCH APPROXIMATELY 4-INCHES WDE AND B-INCHES DEEP ALONG THE PROPOSED C EXX%SEDRF,THAI SECTION OF II{F DRAIN 4NT11AT I FIT L MATERIAL ISFGROMMETS OR STAKES SPACED 14000RE CONTROL
m > 1.INSPECT CHECK DAMS AND CHANNELS FOR DAMAGE AFTER EACH RUNOFF STONE PLACEMENT-PLACEMENT OF RIPRAP SHOULD FOLLOW IMMEDIATELY AFTER PLACEMENT OF THE LINE OF POSTS AND UPSLOPE FROM THE BARRIER. DEAD IPFEF7 APART.
Y - EVENT. FILTER FABRIC.PLACE RIPRAP SO THAT IT FORMS A CLOSE,WELL GRADED MASS OF STONE WITH A B.BACKFILL THE FRENCH WITH COMPACTED SOIL PLACED OVER N IE FILTER FABRIC.
OF THE '1.EXTENT IT IF DRAIN BEYOND THE TOE OF THE SLOPE AND ADEQUATELY PROTECT THE D ETA,
o .- 2.ANTICEROSION ATE
NCE AROUND DEPOSTHE EDGES
ABOVE THE CHECK DAM CORRECTALL MINIMUM EVE LOADING
THAT THE QUDIRY AND(IONTROLLED DUMPING
GFINAL5 LMAY ENT.OBTAINED 9. DO IIOi ATTACK FILTER FABRIC TO EXISTING TREES. OUTLET FROM EROSION.
'C U EROSIONMMEDIATELYAROUNDTCANT EROSION
CURDAM CORRECT ALL BY PLACE
RIPRAP
ELOADTS FULL THICKNESS
ONE
OPERATION ODO NOT PEACE
BY DIUMING
DLS
O PLACE PIPRAP TO ITS FULL Tt{ICNNESS IN ONE OPERATION. W NOT PLACE RIPRAP BY OVhdPItIG 8,MAKE Off:SE7It EILEVE COMPACTED DIKE RIDGE NO Lk SS THAN i-FEET ABOVE 111E TOP
LryQ DAMAGE,PROTECTIVE IF LINER IN EROSIONOCCURS HE CHANNEL.
THROUGH ROOTS OR OTHER METHODS THAT CAUSE SEGREGATION OF STONE SIZES.TAKE CARE NOT MAINTENANCE OF THE PIPE AT EVERY POIhJi.
m INSALL A PROTECTIVE RIPRAP LINER IN THAT PORTION OF THE CHANNEL TO DISLODGE THE UNDERLYING BASE OF FILTER FABRIC WHEN PLACING THE STONES. i.INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE Ally REQUIRED 9.IMMEDIATELY STABILIZE AIJ.DISTURBED AREAS 101 LOWING CONSTRUCTION.
3,REMOVE SEDIMENT ACCUMULATED BEHIND THE DAMS AS NEEDED TO PREVENT REPAIRS IMMEDIATELY.SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE,TEAR,DECOMPOSE OR
DAMAGE TO CHANNEL VEGETATION,ALLOW THE CHANNEL TO DRAIN THROUGH IHE FINISHED SLOPE SHOULD BE FREE OF POCKETS OF SFMALL STONE OR CLUSTERS OF LARGE STONES, BECOME INNEFECTIVE,REPLACE IT PROMPTLY.REPLACE BURLAP EVERY 60 DAYS. MAIN fFNANCE. DRAWING NUMBER:
Ca THE STONE CHECK DAM AND PREVENT LARGE FLOWS FROM CARRYING SEDIMENT HAND PLACING MAY BE NECESSARY TO ACHIEVE THE PROPER DISTRIBUTION OF STONE SIZES TO
`t E OVER THE DAM.ADD STONES TO DAMS AS NEEDED TO MAINTAIN DESIGN WEIGHT PRODUCE A RELATIVELY SHOULD,UNIFORM SURFACE.THE FINISHED GRADE OF THE RIPRAP SHOULD 2, REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE
cRIPRAP
AND CROSS SECTION. BLEND GRADE) SURROUNDING AREA. NO OR PROTRUSION OF RIPRAP NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE,TAKE CARE TO AVOID UNDERMINING THE INSPECT THE SLOPE ORAIN AND SUPPOR71NG DIVERSION AFT ER EVERY RAINFALL
tV V AND PROMPTLY MAKE NECESSARY REPAIRS.t411Ftl RiE PRO7F.CiEQ AREh HAS BEEN
rn SHOULD BE APPARENT WHICH WOULD IMPNn STREAM FLOWS FENCE OARING CLEAIJOUT.REMOVE ALL FENCING MATERIALS AND UNSTABILIZED SEDIMENT DEPOSITS. PERMANENTLY STABILIZED,IEMPORARY MEASURES MAY BE REMOVED,MATERIALS
0 0 BRING THE AREA 70 GRACE AND STABILZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED. DISPOSED OF PROPERLY,AND ALL DISTURBED AREAS STABILIZED APPROPRIATELY
N Fc
4 TEMPORARY GRAVEL CHECK DAM a RIP RAP CHANNEL PROTECTION 2 ,TEMPORARY SEDIMENT FENCE �'' 1 ,TEMPORARY SLOPE DRAIN
E N C501� A501 / C501 / C501 f
06C501
41
o a
i

IIIIIIIIIIIIIIIIIIIIIIIIIIII
6.10 DEFINmON: POROUS BARRIERS INSTALLED INSIDE A TEMPORARY SEDIMENT TRAP, SKIMMER BASIN, OR SEDIMENT BASIN TO REDUCE I 4'MAx
THE VELOCITY AND TURBULENCE OF THE WATER FLOWING THROUGH THE MEASURE, AND TO FACILITATE THE SEITUNG OF SEDIMENT LZI 3 LaBeRa
MCCE=
Temporary Seeding Species Rate (lb/acre)Table 6.10a Seeding mixture FROM THE WATER BEFORE DISCHARGE. STEEL POST
POW2P@d by partnership.
PURPOSE: SEDIMENT TRAPS AND BASINS ARE DESIGNED TO TEMPORARILY POOL RUNOFF WATER TO ALLOW SEDIMENT TO SETTLE CLA55I OR 2 RIP-RAP Will THd
Recommendations for Late BEFORE THE WATER IS DISCHARGED. UNFORTUNATELY, THEY ARE USUALLY NOT VERY EFFICIENT DUE TO HIGH TURBULENCE AND WIRE FENCING INCHES OF WASHED STONE ON
TS Rye (grain) 120 "SHORT-CIRCUITING" FLOWS WHICH TAKE RUNOFF QUICKLY TO THE OUTLET WITH LITTLE INTERACTION WITH MOST OF THE BASIN. OFAPPLACABLE) UPSTREAM FACE
Definition Planting rapid-growing annual grasses, small grains, or legumes to provide Winter and Early Spring Annual lespedeza (Kobe in POROUS BAFFLES IMPROVE THE RATE OF SEDIMENT RETENTION BY DISTRIBUTING THE FLOW AND REDUCING TURBULENCE. THIS IIIIIIIIIII . , Ill615 St. George Square
initial,temporary cover for erosion control on disturbed areas. Piedmont and Coastal Plain, PROCESS CAN IMPROVE SEDIMENT RETENTION. Suite 300
Korean in Mountains) 50WOVEN HLRI
CONDITIONS TEMPORARY
WHERE PRACTICE APPLIES; THIS PRACTICE SHOULD BE USED IN ANY TEMPORARY SEDIMENT TRAP, SKIMMER BASIN, OR FABRIC v Winston-Salem, N C 27103
TEMPORARY SEDIMENT BASIN.
Purpose To temporarily stabilize denuded areas that will not be brought to final grade Omit annual n r les edeza when duration of temporary cover is not to 336-842-4065
fora period of more than 21. calendar days. p P ry PLANNING CONSIDERATIONS: POROUS BAFFLES EFFECTIVELY SPREAD THE FLOW ACROSS THE ENTIRE WIDTH OF A SEDIMENT BASIN extend beyond June. TRAP. WRIER FLOWS THROUGH THE BAFFLE MATERIAL., BUT IS SLOWED SUFFICIENTLY TO BACK UP THE FLOW, CAUSING IT TO SPREAEk
D C#0430
ACROSS THE ENTIRE WIDTH OF THE BAFFLE. SPREADING THE FLOW IN THIS MANNER UTILIZES THE FULL CROSS SECTION OF THE STEEL POST
Temporary seeding controls runoff and erosion until permanent vegetation or BASIN, WHICH IN TURN REDUCES FLOW RATES OR VELOCITY AS MUCH AS POSSIBLE. IN ADDITION, THE TURBULENCE IS ALSO la b e I I a p C.C 0 m
Seeding dates GREATLY REDUCED. THIS COMBINATION INCREASES SEDIMENT DEPOSITION AND RETENTION AND ALSO DECREASES THE PARTICLE SIZE GENERAL NOTES MANIENANCENOTES: cAssloR2 I'MIN WASHED STONE
other erosion Control measures can be established. In addition, It provides 1. SEDIMENT FILTER OUTLET SHALL BE 16 INCHES HIGH OM NO 1, FILTER WILET85HALL BE INSPECTED BY THE FINANCIALLY
residue for soil `election and seedbed reparation, and reduces problems of Mountains-Above 2500 feet: Feb. 15- May 15 OF SEDIMENT CAPTURED. THE INSTALLATION SHOULD BE SIMILAR TO A SEDIMENT FENCE. THE FABRIC SHOULD BE 700 G/M2 COIR TALLERTHANIBINCHE3 RESPONSIBLE PARTYOR HIS AGENT IMMEDIAULYAFTER RIP-RAP (NCDOT N5 OR N57)
P preparation, P EROSION BLANKET OR EQUAL A SUPPORT WIRE ACROSS THE TOP WILL HELP PREVENT EXCESSIVE SAGGING IF THE MATERIAL IS EACH RAINFALL AND AT LEASTOALYOURING PROLONGED ry. ?�
Below 2500 feet: Feb. 1- May 1 ATTACHED TO IT WITH APPROPRIATE TIES. 2, CLASS OR 2 RIP-RAP SNAIL BE USED AND COVEREDNPITH RAINFALL.ANY REPAIRS NEEDED SHALL BE MADE Ow,
litud and dust production from bare SOLI surfaces during construction, Piedmont-Jan. 1 - May 1 61NCHES OF NCOOT 05 OR*57 WASHED STONE ON THE IMMEDIATELY,
UPSLOPE SIDE 111
IYAMER ANYI- 1 ! -II-
Coastal Plain-Dec. 1 -Apr. 15 DESIGN CRITERIA THE DESIGN CRFTERIA. THE PERCENT OFOFESURFNACE AREA FOR TRAP OR MEACH SECTION OF 1H SEDIMENT HEEINBAFFLE IS AS FOLLOWS BE SIZED : 3.
THE APPROPRIATE 3, POSTS SHALL BE NO MORE THAN4FEETAPART. 2 �NTTHATRASCLOGGED RREMOVE It. I ,%%",NCAh�<zizz I
Conditions Where On any cleared, unvegetated, or sparsely vegetated soil surface where * INLET ZONE - 25% !�t •°• • •
Soil amendments * FIRST CELL - 25% 4. SITE DURE75ATAN PoINTSMALCONCENOA CONCENTRATED 3. SEDIMEMOEPoSRSSHOUDBEREMO BANNED O. �gSS/
Vegetative cover 1s needed for less than I year. Applications Of this practice * ARE ANTICIPATED AND AT THE DIRECTION OF THE DEPOSITS REACH HALF THE HEIGHT OF THE BARRIER ANY paw_-4-j��
ti•' *Practice Applies Follow recommendations of soil tests or apply 2,000 Ib/acre ground SECOND CELL - 25% INSPECTOR. SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT V1include(iiversions, dais, temporary sediment basins-, temporary road banks. * OUTLET ZONE - 25% FENCE OUTET IS REMOVED SHAL BE DRESSED TOSal7d t0 SOLI SLOCk lies. agricultural limestone and 750 lb/acre 10-10-10 fertilizer. 5. ONE ACRE MM14UM DRANAGE AREA PER DOM. CONFORM TONE EXISTING GRACE,PREPARED AND -
F P BAFFLE SPACING IN FUTURE PERMANENT STORMWATER BASINS IS BEYOND FOREBAY. BE SURE TO CONSTRUCT BAFFLES UP THE SEEDED. 1. 22102
Mulch SIDES OF THE TRAP OR BASIN BANKS SO WATER DOES NOT FLOW AROUND THE STRUCTURES. MOST OF THE SEDIMENT WILL BE -
Y g p g CAPTURED IN THE INLET ZONE. SMALLER PARTICLE SIZE SEDIMENTS ARE CAPTURED IN THE LATTER CELLS. BE SURE TO MAINTAIN CX .°
Apply 4,000 lb/acre straw. Anchor straw b tacking with asphalt,netting,
Annual plants,which Sprout and row rapidly and survive for only one season. ACCESS TO THE TRAP FCR MAINTENANCE AND SEDIMENT REMOVAL THE DESIGN LIFE OF THE FABRIC IS 6-12 MONTHS, BUT MAY Ii 'O'. h"GINSS .. ��
Planning P 1 g P Y` Y or a mulch anchoring tool. A disk with blades set nearly straight can be NEED TO BE REPLACED MORE OFTEN IF DAMAGED OR CLOGGED. _ 74 0�\�
are suitable for establishing initial or temporary vegetative cover. Temporary z4 ��IA.STIMe�' xx
Considerations seeding preserves the integrity of earthen sediment control structures such used as a mulch anchoring tool. CONSTRUCTION SPECIFICATIONS ( 7 }SILT FENCE STONE OUTLET 4// / x"
MATERIALS } C502 111111
as dikes,diversions, and the banks of dams and sediment basins. It can also Maintenance 1. USE MATTING MADE OF 100% COCONUT FIBER (COIR) TWINE WOVEN INTO HIGH STRENGTH MATRIX WITH THE PROPERTIES SHOWN - - LL
reduce the amount of maintenance associated with these devices. For example, Refertilize if growth is not fully adequate. Reseed, refertilize and mulch IN THE TABLE BELOW. - / j
the frequency of sediment basin cleanouts will be reduced if watershed areas, immediately following erosion or Other damage. 2. STAPLES SHOULD BE MADE OF 0.125 INCH DIAMETER NEW STEEL WIRE FORMED INTO A 'Ur SHAPE NOT LESS THAN 12 INCHES
IN LENGTH WITH A THROAT OF 1 INCH IN WIDTH. THE STAPLES ANCHOR THE POROUS BAFFLES INTO THE SIDES AND BOTTOM FL=W N 4UFIHAAn IMl
outside the active construction zone, are stabilized. OF THE BASIN. I1,. n'1`e.1r"m Analw tK ii°,
3. ENSURE THAT STEEL POSTS FOR POROUS BAFFLES ARE OF A SUFFICIENT HEIGHT TO SUPPORT BAFFLES AT DESIRED HEIGHT. T
Propel'seedbed preparation,selection ofappropriate species,and useOfquality POSTS SHOULD BE APPROXIMATELY 1-3/8' WIDE MEASURED PARALLEL TO THE FENCE, AND HAVE A MINIMUM WEIGHT OF 1.25
seed arc as important in this Practice as in Practice(i.l 1,Permanent Seeding. LB/LINEAR FT. THE POSTS MUST BE EQUIPPED WITH AN ANCHOR PLATE HAVING A MINIMUM AREA OF 14.0 SQUARE INCHES ANDTP'm HAIwu amx No°f 1�ia�wAl i
BE OF THE SELF-FASTENER ANGLE STEEL TYPE TO HAVE A MEANS OF RETAINING WIRE AND COIR FIBER MAT IN THE DESIRED THEE lmo ax S
Failure to follow established guidelines and recommendations carefully may Table 6.10b Seeding mixture POSITION WITHOUT EMPLACEMENT. lill"PlISAM)MCIN i"' INLET I
ll
result in an inadequate or short-lived stand of vegetation that will not control Temporary Seeding Species Rate (lb/acre) 4. USE 9-GAUGE HIGH TENSION WIRE FOR SUPPORT WIRE. 11 #I ,I, i
erosion. Recommendations for German millet 40 ab k(�ifll)'Ili(ijs,,,iII'lI ti�
� sd1i t33ti gNiif(t 7!ira `I1�3� .:� 'f 1 ###j
Temporaryseeding provides rotectionfor no more than l ear,during which Summer COIR FIBER BAFFLE MATERIAL PROPERTY REQUIREMENTS , i�
time permanent stabilization should be initiated. In the Piedmont and Mountains, a small-stemmed Sudangrass may be `- (lml #€I 1 t
substituted at a rate of 50 lb/acre. THICKNESS 0.30 IN. MINIMUM SECTION H � PtLAN� I�mwm III
Complete grading beforepreparing seedbeds,and install ill necessary erosion Seeding dates TENSILE STRENGTH WET 90OX680 LB FT MINIMUM
Specifications I 6a a Mountains-Ma 155 (WET)
/ J
control practicesrhe`ices"chas,
dbed preparation
waterways,difficult
M crease steep slopesy -Aug.g ELONGATION (WET) 69% X 34% MAXIMUM 6 - #57 WASHED STONE & WIRE INLET PROTECTION
because they make seedbed preparation difficult and increase fhb erosion Piedmont-May 1 -Aug. 15
hazard. if soils become compacted during grading, loosen them to a depth of Coastal Plain-Apr. 15-Aug. 15 LOW VELOCITY 10-12 FT/SEC ` C502
6-8 inches using a Lipper,harrow,or chisel plow. Soil amendments WEIGHT 20 OZ/SY (680 G/M� MINIMUM ©2019 LaBelle Associates
SEEDBED PREPARATION Follow recommendations of soil tests or apply 2,000 Ib/acre ground M'NIMUM WIDTH 6.5 FEET EMERGENCY SPILLWAY TO BE
agricultural limestone and 750Ib/acre 10-10-10 fertilizer. cu 4DECUms IEXCEBED SIOL
Good seedbed preparation is essential to successful plant establishment. A g OPEN AREA 50% MAXIMUM PflowoE cuRLEx IExcELSIoR
good seedbed is well-pulverized, loose, and unifonn. Where hydroseeding MATTING
methods are used, the surface may be left with amore irregular Surface of Mulch
large clods and stones. 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 CONSTRUCTION ALAMAN C E
Liming-Applylimeaccordin losoiltestrecommendations.Ii'the I-3 lcidit used as a mulch anchoring tool. 1. GRADE THE BASIN SO THAT THE BOTTOM IS LEVEL FROM TO BACK AND SIDE TO SIDE.
g P (a y) 2. INSTALL THE COIR FIBER BAFFLES IMMEDIATELY UPON EXCAVATION OF THE BASINS. BASIN
of the soil is not known,an application of ground agricultural limestone at the 3. INSTALL POSTS ACROSS THE WIDTH OF THE SEDIMENT TRAP (PRACTICE 6.62, SEDIMENT FENCE) - INFLUENT FLOATING AGGREGATES, LL
Maintenance 4. STEEL POSTS SHOULD BE DRIVEN TO A DEPTH OF 24 INCHES.AND SPACED A MAXIMUM OF 4 FEET APART. THE TOP OF THE
FABRIC SHOULD BE A MINIMUM OF 6 INCHES HIGHER THAN THE INVERT OF THE SPILLWAY. TOPS OF BAFFLES SHOULD BE A n6sIGN wA ER SURFACES MMER
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch EEL sEEDETAI o 0
rate of I to 1 1/2 tons/acre on coarse-textured soils and 2-3 tons/acre on fine- immediatelyfollowing erosion or other damage. MINIMUM OF 2 INCHES LOWER THAN THE TOP ET THE EARTHEN EMBANKMENT. o F5
9 9 5. INSTALL AT LEAST THREE ROWS OF BAFFLES BETWEEN THE INLET AND OUTLET DISCHARGE POINT. BASINS LESS THAN 20 FEET BAFFLES TYPICAL Mr. Chad Threatt VP
textured soils is usually sufficient. Apply limestone uniformly and incorporate IN LENGTH MAY USE 2 BAFFLES. _40 SEE DETAIL
into the to 4-6 inches of soil. Soils with a pH of 6 of higher need not be 6. ATTACH A 9 GAUGE HIGH TENSION WIRE STRAND TO THE STEEL POSTS AT A HEIGHT OF 6 INCHES ABOVE THE SPILLWAY RIPRAPINLE7
I , IF, -
limed. P I g Table 6.10c Seeding mixture CONVERTED TO A PERMANENT STORMWATERELEVATION WITH PL&­TTC TIES OR WIRE RBBASIN OF A GREATER DNERS TO PREVENT EPTH, THE BAFFLE ING. IF THE PHEIIGHT SHOULD BENT E WEDASIN ON THE POLL PROTECTION
Temporary Seeding Species Rate (lb/acre) DEPTH DURING USE A TEMPORARY SEDIMENT BASIN.
Fertilizer-Base application rates on soil tests. When these are not possible, 7. EXTEND 9 GAUGE MINIMUM HIGH TENSION WIRE STRAND 0 SIDE OF BASIN OR INSTALL STEEL T-POSTS TO ANCHOR BAFFLE TO
apply a10-10-]0 fade fertilizer at 700-1,000 lb/acre. Both fertilizer and time Recommendations for Fall Rye (grain) 120 SIDE OF BASIN AND SECURE TO VERTICAL END POSTS.
II Y g S. DRAPE THE COIR FIBER MAT OVER THE WIRE STRAND MOUNTED AT A HEIGHT OF 6 INCHES ABOVE THE SPILLWAY ELEVATION.
should be incorporated into the top 4-6 inches of soil. if a hydraulic seeder is SECURE THE COIR FIBER MAT TO THE WIRE STRAND WITH PLASTIC TIES OR WIRE FASTENERS. ANCHOR THE MATTING TO THE
used,do not mix seed and fertilizer more than 30 minutes before application. Seeding dates SIDES AND FLOOR OF THE BASIN WITH 12 INCHES WIRE STAPLES, APPROXIMATELY 1 FT APART, ALONG THE BOTTOM AND SIDE 0.25)t'c' 0.25>1:1 0.25"elul 0.z5xr•
PP Mountains-Au 15- Dec. 15 SLOPES OF THE BASIN.
g• 9. DO NOT SPLICE THE FABRIC, BUT USE A CONTINUOUS PIECE ACROSS THE BASIN WATER SURFACE LENGTH"L"
Surface roughening-If recent tillage operations have resulted in a loose Coastal Plain and Piedmont-Aug. 15- Dec. 30 10. ADJUSTMENTS MAY BE REQUIRED IN THE STAPLING REQUIREMENTS TO FIT INDIVIDUAL SITE CONDITIONS. NQiE
Surface, additional roughening may not be required, except to break up large BASIN DESIGN .SEE PROJECT EROSION CONTROL PLAIN FOR SPECIFIC BASIN DIMENSIONS AND ORIENTATION
MAINTENANCE: INSPECT &1FFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL MAKE ANY REQUIRED REPAIRS IMMEDIATELY. BE z s
Soil amendments WATER LEVEL ELEV 5•-a F m TYPICAL BASIN PLAN
clods. if rainfall causes the surface to become sealed or crusted, loosen it SURE TO MAINTAIN ACCESS TO MAINTAIN ACCESS TO THE BAFFLES. SHOULD THE FABRIC OF A BAFFLE COLLAPSE, TEAR, DECOMPOSE, TOP OF DAM
Follow Soil tests ora I 2,000 lb/acre round agricultural limestone OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY. REMOVE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL, TO PROVIDE ADEQUATE FLOATINGSURFACE MIN, q w
just prior to seeding by disking,raking,harrowing,rn other suitable methods. apply g g SKIMMER.SEED AI( _ B ELEVATION
and 1,000 lb/acre 10-10-10 fertilizer. STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE BAFFLES. TAKE CARE TO AVOID DAMAGING THE BAFFLES
Groove or furrow slopes steeper than 3:1 on the contour before seeding DURING CLEANOUT, AND REPLACE IF DAMAGED DURING CLEANOUT.OPERATIONS. SEDIMENT DEPTH SHOULD NEVER EXCEED HALF THE 2
DESIGNED STORAGE DEPTH. AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED, REMOVE ALL BAFFLE 117 EMERGENCY SUPPORT ROPE OR SUPPORT POST STAKE To
(Practice(i.03,Su1fncc Rattglielli/tg). Mulch MATERIALS AND UNSTABLE SEDIMENT DEPOSITS, BRING THE AREA TO GRADE, AND STABILIZE IT. BAFFLE QI SPILLWAY WIRE TO PREVENT 24"IMOBOUGM sUPPORTIM I
ELEVATION SAGGING 08810 E
PLANT SELECTION Apply 4,OOO lb/acre straw. Anchor straw by tacking with asphalt,netting, BASIN BOTTOM ELEVATION
or a mulch anchoring tool. A disk with blades set near) straight can be _ COMPACTED EARTH __ It
Select an appropriate species or species mixture from Table 6.1 Oa for seeding 9 Y 9 r] ' Ip /[[
used as a mulch anchoring tool. / POROUS B/S1 I LES EMBANKMENT STABILIZED OUTLET
in late winter and early spring, Table 6.1 Ob for summer, and Table 6.1 Oc for g \ 8 1 PAnnALeaslNsecnoN PROiILIZED
..--- - --- -_ __ ___
fall. C502 ) CONSTRUCTION SPECIFICATIONS COIR ESH OR SIMILAR
Maintenance / BAFFLE ELEVATION STAPLED OR TRENCHED
i.CLEAR,GRUB,AND STRIP THE AREA UNDER THE EMBANKMENT OFALL VEGETATION ANO INTO BOTTOM OR SIDE
In file Mountains, December and January seeding5 have pool- chances of Repair and refertilize damaged areas immediately. TopdresS With 50 ROOT MAT.REMOVE ALL SURFACE SOIL CONTAINING HIGH AMOUNTS OF ORGANIC CONSTRUCTION SPECIFICATION
necessary
lb/acre of nitrogen in March. If it is to extent tea MATTER AND STOCKPILE OR DISPOSE OF IT PROPERLY.HAUL ALL OBJECTIONABLE MATERIAL
Success. When It Is necessary to plant at these times, use recoIi mendation$ g rY temporary TO THE DESIGNATED DISPOSAL AREA,PLACE TEMPORARY SEDIMENT CONTROL MEASURES 1. GRADE THE BASIN SO THE BOTTOM IS LEVEL FRONT TO BACK AND SIDE TO SIDE.
cover beyond June 15, overseed with 50 Ib/acre Kobe Piedmont and BELOW BASIN AS NEEDED. 2.INSTALL POST ACROSS THE WIDTH OF THE SEDIMENT TRAP(PRACTICE 662,SEDIMENT FENCE)
for hill and a SCCUfCIy tacked mU1Ch, Y ( 3. STEEL POST SHOULD BE DRIVEN TOA DEPTH OF24INCHEB,SPACEDA MAXIMUM OF4FEET Coastal Plain) or Korean (Mountains) lespedeza In late February Or 2. Snow Camp Mine
ENSURE 711AT FILL MATERIAL FOR EMBANKMENT IS FREE OF ROOTS,WOODY VEGETATION, APART,AND INSTALLED UP THE SIDES OF THE BASIN AS WELL THE TOP OF THE FABRIC SHOULD
ORGANIC MATTER,AND OTHER OBJECTIONABLE MATERIAL.PLACE THE FILL IN LIFTS NOT TO BE 6 INCHES HIGHER THAN THE INVERT OF THE SPILLWAY.TOPS OF BAFFLES SHOULD BE 2 INCHES
SEEDING early March. EXCEED 9 INCHES AND MACHINE COMPACT IT.OVERFILL THE EMBANKMENT 6 INCHES TO LOWER THAN THE TOP OF THE BERMS.
Evenly apply seed using a cyclone Seeder(broadcast),drill,cultlpacker Seeder, ALLOW FOR SETTLEMENT. 4,INSTALL AT LEAST THREE ROWS OF BAFFLES BETWEEN THE AND THE OUTLET POINT.BASINS
LESS 20 FEEIN LENGTH MAY USE 2 BAFFLE& I
or hydrosceder. Use Seeding rates given ill Tables 6.1OT-6.IOC, Broadcast 3.SHAPE THE BASIN TO THE SPECIFIED DIMENSIONS.PREVENT THE SKIMMING DEVICE FROM 5,MENTHAN USING POST,ADD A SUPPORT WIRE OR ROPE ACROSS THE TOP OF THE MEASURE TO
SETTLING INTO THE MUD BY EXCAVATING A SHALLOW FIT UNDER THE SKIMMER OR PREVENT SAGGING.
Seedling and hyd COSCedlilg are appropriate for steep SIOPCS where equipment SETTLING
PROVIDING A LOW SUPPORT UNDER THE SKIMMER OF STONE OR BLOCK. 6,WRAP POROUS MATERIAL,LIKE JUTE BACKED BY COIR MATERIAL,OVER THE TOP WIRE.711E FABRIC
Cannot be driven, Hand broadcasting 15 not recommended because Of the SHOULD HAVE FIVE TO TEN PERCENT OPENINGS IN THE WEAVE.ATTACH FABRIC TO A ROPE AND
4.PLACE THE BARREL(TYPICALLY 4-INCH SCHEDULE 40 PVC PIPE)ON A RUN,SMOOTH SUPPORT STRUCTURE WITH ZIP TIES,WIRE,OR STAPLES.
difficulty In achieving a uniform distribution. qt wF vll FOUNDATION OF IMPERVIOUS SOIL AD NOT USE PERVIOUS MATERIAL SUCH AS SAND, 7.THE BOTTOM AND SIDES OF THE FABRIC SHOULD BE ANCHORED IN A TRENCH OR PINNED WITH
a�0 }�I'll� GRAVEL,OR CRUSHED STONE AS SACKFUL AROUND THE PIPE.PLACE THE FILL MATERIAL 8 INCH EROSION CONTROL MATTING STAPLES.
r llI AROUND THE PIPE SPILLWAY IN 4-INCH LAYERS AND COMPACT IT UNDER AND AROUND 8,DO NOT SPLICE THE FABRIC,BUT USE A CONTINUOUS PIECE ACROSS THE BASIN.
Small grams should be planted no more than 1 711C17 deep, 817d grasses and , tl) ' N ERT PIPE THE PIPE TO AT LEAST THE SAME DENSITY AS THE ADJACENT EMBANKMENT.CARE MUST BE
NOTES: PJ<�)( (}I:,.,,
1Cgl1mC5 I10 ImOfC than I/2 Inch. Broadcast SCCd Imllst be COVCCCd by Cakll7g STRUCTURAL BSTDRi SHALL BE >' I )(L F Jl�', COMPACTTAKEN TIT TO ING UNDISE THE PIPE ER THE PIPE HAUNCHES THE.
or CONTACT WITH ITS FOUNDATION WHEN MAINTENANCE
CIASSDSWNE. 11 x M ' Y �Xrf .`„
Or chain dragging, and then lightly firmed with a roller or cultipackeL 2. SEDIMENT COMPOLSTONE +Lj J�MF)(i,(,/% M`i PLACE A MINIMUM DEPTH OF2FEET OF COMPACTED BACNfIII OVER THE PIPE SPILLWAY INSPECT BAFFLES AT LEAST ONCE AWEEK AND AFTER EACH PAINFALL,MAKE ANY REQUIRED REPAIRS
IIydCOSCedCd IlllxtllCCs should mCILIdC a WOOCI ilbCC(CCIhIOSC)In11C11. SHALL DE N0.50R N0.5] ttt( nOPJ BEFORE CROSSING IT WITH CONSTRUCTION EQUIPMENT.IN NO CASE SHOULDTILE PIPE IMMEDIATELY.
STONE. �#, r}�-1/ { CONDUIT BE INSTALLED BY CUTTING ATRelCt1 THROUGH THE DAM AFTER THE EMBANKMENT
3. DIMENSIONS ARE MINIMUM �'t� Ir) ( q C, ,:vL' � IS COMPLETE. BE SURE TO MAINTAIN ACCESS TO THE BAFFLES.SHOULD THE FABRIC OF A BAFFLE COLLAPSE,TEAR,
MULCHING ACCEPTABLE UNLESS OTHERWISE A i r�7-ti {)d o(( rbtL A DECOMPOSE,OR BECOME INEFFECTIVE,REPLACE IT PROMPTLY.
SPECIFIED BYTHEENGINEER. f Ili 711 t S.ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURERS INSTRUCTIONS,OR AS DESIGNED.
The use of alappropriate mulch will help ensure establishment undernormal - k7z. /,1� A( I�OQ(� REMOVE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL TO PROVIDE ADEQUATE STORAGE
I Xi�\YIlAr 6,LAY THE ASSEMBLED SUMMER ON THE BOTTOM OF THE BASIN NTH THE FLEMBLE JOINT AT THE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE BAFFLES. ADDITIONAL STREAMINFO-ALAM.AGG.
conditions, and IS essential to seeding Success Linder harsh Site conditions Nt en"" INLET OF THE BARREL PIPE.ATTACH THE FLEXIBLE JOINT TO THE BARREL PIPE AND POSITION THE
(Practice 6.14,Mulching). Harsh site conditions include:
✓K"* '_ L' Y SKIMMER OVER THE EXCAVATED PIT OR SUPPORT.BE SURE TO ATTACK A ROPE TO THE SKIMMER AFT ER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABIHZED,REMOVE ALL BAFFLE 1 1/20/20 &LAND QUALITY COMMENTS
SIDE OF THE BASIN.THIS WILL BE USED TO PULL THE SKIMMER TO THE MATERIALS AND UNSTABLE SEDIMENT DEPOSITS,BRING THE AREA TO GRADE,AND STABILIZE IT.
• seeding in Tall for winter cover (wood fiber mulches are not Considered SIDE FOR MAINTENANCE. NO: DATE: DESCRIPTION:
adequate for this use), Sediment Basin Baffle
I ) 7.EARTHEN SPILLWAYS REVISIONS
STRUCTURAL STONE POSSIBLE.DIE ACHIEVEMENT OF PLANNED ELEVATIONS,GRADE,DESIGN WIDTH,AND
• slopes Steeper than 3:1, ENTRANCE AND EXIT CHANNEL SLOPES ARE CRITICAL TO THE SUCCESSFUL OPERATION OF 6"ID.SCH 40 SKIMMER
FLOOD STORAGE ZONE PROJECT NUMBER:
T MIMIC} _Jam! CONSTRUCTION iPECIFICATION5 TOP OF DATA THE SPILLWAY.FABRIC.
P THE
ABRICSHOULD MUST HE WED WITH LAMINATED PLASTIC IMPERMEABLE PVC PIPE FLOAT INFLUENT
• excessively hot or dry weather, SEDIMENT STORAGEZON� I I- 12"MIN.WASHEO 70POFWEIR GEOTIX7ILEFABRIC.THEFAOflIChiUSTBEWIOEANDLONGENOUGHTOCOVEflTHEBOnOM 6'PVC W 2190335
1.CLEAR,GRUB AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL VEGETATION STONE FILTER 61 MIN, AND SIDES AND EXTEND ONTO THE TOP OF THE DAM FOR ANCHORING IN A TRENCH.THE BEND TV.
• adverse SOIIs shallow,rocky,Or high Ill CI(I Or sand),im(i - -ROW AND ROOT MAT.REMOVE ALL SURFACE SOIL CONTAINING HIGH AMOUNTS OF NCDOT STD.#57 EDGES MAY BE SECURED WITH B-INCH STAPLES OR PINS.711E FABRIC MUST BE LONG ENOUGH
( Y g Y ) It R PIP TO EXTEND DOWN THE SLOPE AND EMT ONTO STABLE GROUND.THE WON OF THE FABRIC
ORGANIC AWTER AND STOCKPILE 02 DISPOSE OF IT PROPERLY.HAUL ALL 3600 CU.FT./ACRE .5 DRAWN BY:
NATURAL GROUND J ill OBJECTIONABLE MATERIAL TO THE DESIGNATED DISPOSAL AREA. T MUST BE ONE PIECE,HOT JOINED OR SPLICED;OTHERWISE WATER CAN GET UNDER THE FADRIG. KC� •r
• anCON I'CCC1Ving COUCCULCatC(i flow. �I I I BEDIMAIT TRAP IS'MAX, IF THE LENGTH OF THE FABRIC IS INSUFFICIENT FOR THE E14TIRE LENGTH OF THE SPILLWAY, r\v�/A I�
36°PIPE MPX 2.ENSURE TIIAIFILL MATERIAL FOR THE EM- ROOTS,WOODY__. _ _IA ___ _ ._ _ .. ., i, _ „,,,,, «<STMNS eEeuuiuC THE Munie7E?*!Du„nv Enmm THE SEC7M,-,
SECTION A-A VmuLLIllLFTNOTOECEED9-UUHES ANDUUJtUI MACHINE COMPACT
OVER �Ty ,. SHOULDOVER.._..HELO....._.,.-_-....-_.-.,._..ATER._---_... UNDE„--_..-BRIO REVIEWED BY:
. If the area t0 be mulched 1S SllbJCCt to COflCellt'ated watCl'f10\V, CIS]Il Cham1C1S, SEDIMENTCOMFlOLSIDNEJ THE FILLIIJLnSNOTTOEXCEE09-INCNESANDtdACHINECOh1PACT IT.OVER ALL �� SHOuIOOVERLAPTIiELOWERSEG710N(S)SO THAT WATEflCANNOT FLOW OIOERTHE FAWI0. q'PVC VENT 4'x4°TEE PAS
THEEMBANKIIE O6-INCHESTOALLOWFORBANKME T.
COARSE STONE ALL SECURE THE UPPER EDGE AND SIDES OF THE FABRIC IN A TRENCH WITH STAPLES OR PINS.
anchor mulch with nettingPractice(i.14 Mulclrin= .
( ' £`) " ---'� 3.BETWEEN Ill RIPUTLETSEHES IN FTHE ROM PIPING
PROTECT THE FABRICCONNECTION CLASS BEROSIOt1 FlLTEfl EROTIC
STANDARD ROCK PIPE INLET PROTECTION tRIPMPAND THE SOIL WONT PIPING BY USING FILTER FABRIC OR CONTROL 670NE B.INLETS-DISCHARGE WATER INTO THE BASIN IN MANNER TO PREVENT EROSION.USE
Reseed and mulch areas Where seedling emergence IS poor, or Where erosion / 5 �-- _ _ _____ _ _ _ KEYWAY CZFF TRENCH BETWEEN THE AFFAIR STRUCTURE AND THE SOIL TEMPORARY SLOPE DRAINS OR DIVERSIONS WITH OUTLET PR07ECTION TO DIVERT SEDIMENT ISSUED FOR: Tp
Maintenance r g p LADEN WATER TO THE UPPER END OF THE POOL AREA TO IMPROVE BASIN TRAP EFFICIENCY. CONSTRUCTION
RUCTION
occurs, as soon as possible. Do not mow. Protect from Traffic as much as cso2 ` Cftoss SECTION p _ r` a. ACROSSLATE TESPIL FILTER FABRIC UNDATIBETWEEN NAN SIDESIPRAP TO THESOIL.EXTENDTHE THE FABRIC 9.EROSION DVERT SURFACE
WATER STRUCTAWAY
FROM
BARE AREAS.
COMPLETE
THE
AED AREANKMENT BEFORMIZED.
possible.
ACROSS THE SPILLWAY FOUNDATION AND SIDES TO THE 70P OF THE DAM; OVERT SURFACE WATER AWAY FA0IA BARE AREAS.COPMPLETE THE EMBANKMENT BEFORE FLOW CONTROL GALVANIZED Sit
THE AREA IS CLEARED.STABILIZE THE EMERGENCY SPILLWAY EMBANKMENT AND ALL OTHER ORIFICE STRAP TYPICAL DATE:
OR DISTURBED AREAS ABOVE THE CREST OF THE PRINCIPAL SPILLWAY IMMEDIATELY AFTER 1/23/20
OVERFILL 4"FOft EMERGENCY BY-PASS 6' CONSTRUCTION. 4°ID.SCH,40
S1(L'P1"G)OPCIf%On b, EXCAVATE AKEYPlAYWENCHALONG IHECElTEPLINEOFTHEEPILLWAy DESIGN
1 21" SETTLEMENT BELOW SETTLED TOP
SETTLED OF DAM 10.INSTALL POROUS BAFFLES AS INDICATED IN SEDIMENT BASIN BAFFLE DETAIL.
References / OUNOAiDN EXTENDING UP THE SIDES TO THE HEIGHT OF THE DATA THE WENCH MIN. 0 D _
6.03,Surface Roughening I 2'MIu I ]a I SHOULD FEAT LEAST 2-FEET DEEP AND&FEET WIDE NTH 1:1 SIDE SLOPES, TOP I1.AFTER ALL THE SEDIMENT PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED,REMOVE DRAWING NAME:
Y 1.6' THE STRUCTURE AND ALL THE UNSTABLE SEDIMENT.SMOOTH THE AREA TO BLEND WITH THEP,
6.O4,TO SOlhllg SOIL 4.CLEARTHEPJNDAREABELOWHEELEVATIONOFTHECRESTOFTHEEMBANKMENT.
�d (
a, Top soiling I ADJOINING AREAS AND STABILIZE PROPERLY, SKIMMER
3 SOIL ,;, J 111 1 gTl S.ALL CUT ANDFILL SLOPES SHOULD BE 2:10R FLATTER. Salt NATURAL G'END CAP INFLUENT
1= Y ! 1 1 X'. 2' i� 6, ENSURE THAT THE STONE(DRAINAGE)SECTION OF THE EMBANKMENT HAS A MINIMUM Fl L 1'-61
"q M .[!+ 1✓v v L h == Mp.. GflOUND tdAINTENANCE
Sul fiice Stabilization BOTTOM W DTI OF 3-FEET AND MAXIMUM SIDE SLOPES OF I:I TRAT EXiENDTO THE _ 5'-(Y'
MUTANT OF TIE SPILLWAY SECTION, INSPECT SKIMMER SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT(ONE-HALF
O° 6.i I,Permanent Seeding ]. CONSTRUCT MINIMUM FINISHED STONE SPILLWAY BOTTOM WIDTII,AB SHO'NN ON 3 2:1510E INCH OR GREATER)RAINFALL EVENT AND REPAIR IMMEDIATELY.REMOVE SEDIMENT AND RESTORE
C'Og FILTER IN. SLOPE MAX. SKIMMER PLAN
6.14,Mulching THE FLANS WITH 2:1 SIDE SLOPES EXTENDING TO THE TOP OF THE OVER FILLED FABRIC AI SIDE HEOASINTOITSORIGINALDIMENSIONSWHENSEDIMEMACCVMMUAiE5T00NE-HALF THE 6'ID.SCH,40
EMBANKMEW.KEEP THE THICKNESS OF THE SIDES OF THE SPILLWAY OUTLET STRUCTURE HEIGHT OF THE FIRST BAFFLE.PULL THE SKIMMER TO ONE SIDE SO THAT THE SEDIMENT UNDERNEATH PVC PIPE FLOAT
U d'TYPICAL AT A MIMMUH OF 21 INCHES.THE WEIR MUST BE LEVEL AND CONSTRUCTED TO GRADE SLOPE MAX. IT CAN BE EXCAVATED.EXCAVATE THE SEDIMENT FROM THE ENTIRE BASIN,NOT JUST AROUND THE 4'PVC VENT
Oj rf/)fJE'JT(ifl" TO ASSURE MSIGNCAPACI7V. STONE SECTION SKIMM11EFlOR THE FIRST CELL.MAKE SURE VEGETATION GROWINGIN THE BOnOM110F THE BA51tJ 3'-6" T'-6" EROSION AND
B. MATERIAL DO IN THE STONE SECTION SHOULD BE WELL-GRADED MIXTURE OF STONE DOES NOT HOLD DOWN THE SKIMMER.p 8.02,Vegetation Tables WAR A d50 SZE OF 9-INCHES(CLASS B EROSION CONTROL STONE IS RECOMMENDED) MAINTENANCE REPAIR THE BAFFLES IF THEY ARE DAMAGED.RE-ANCHOR THE BAFFLES IF WATER IS FLOWING
a ADD THE SMIOM STONE SIZE STONES
WORKED
INCHES. E E STONEVOIDS OF THE LARGER
INE STORES.THE
UNDERNEATH OR AROUND iI{ENT. SEDIMENT CONTROL
c A'J ADD THE SMIUER SiDNES WORKED INTO THE VOIDS OF THE LARGER STONES.TI{E 1. INSPECT TEMPORARY SEDIMENT TRAPS AFTER EACH PERIOD OF SIGNIFICANT 4"2ZS BEND
'5 'E: CONSTRUCTION SPECIFICATIONS' STONE SHOUD BE HARD,ANGULAR,AND HIGHLY WEATHER-RESISTANT. IF THE SKIMMER IS CLOGGED W9TI{TRASH AND THERE IS WATER IN TI1F.BASS,USUALLY JERKING
Y U 7.BEMOVE AND PROPERLY DISPOSE OF ALL TREES,BRUSH,STUMPS AND OTHER OBJECTIONABLE 9, ENSURE THAI THE STONE SPILLWAY OUTLET SECTION EXTENDS DOWNSWEAM PAST THE RAINFALL.REMOVE SEDIMENT AND RESTORE i!{E TRAP TO ITS ORIGINAL DIMENSIONS ON THE ROPE WILL MAKE THE SKIMMER BOB UP AND DOWN AND DISLODGE THE DEBRIS AND
SPxI1U6
MATERIAL 70E OF TI{E EMBANKMEtJT UNTIL STABLE COCITIONS ARE REACHED AND OUTLET WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE RESTORE FLOW.IF THIS DOES NOT WORK,FULL THE SKIMMER OVER TO THE SIDE OF THE BASIN 4°PVC TEE
DETAILS
. ? WAP.PLACE THE SEDIMENT THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA STNSTL.HOSE 4°x4'PVCTEE
C U 2 ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION MEETS ALL DESIGN REQUIREMENTS, VELOCITY IS ACCEPTABLE FOR THE RECEIVING STREAM.KEEP THE EDGES OF THE STONE AND REPLACE THE CONTAMINATED PART OF THE GRAVEL FACING. CAND LOGGED;
SO REMOVE
THE ORIFICE INSIDE THE SHIMMER TO SEE IF IT IS CLAMPS TYP.
m C, 3, ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE DESIGN ELEVATION OUTLET BECTON FLUSH Wild THE SURROUNDING GROUND AND SHAPE THE CENTER TO CLOGGED;IF SO REh10VE THE DEBPoS.
2.CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING.PERIODICALLY 4°PVC FLANGE
U' Q PLUS THE SPECIFIED SETTLEMENT. CONFINE T@OUTFLOW STREAM(REFERENCES:OUTLET PROTECTION). 4°FLEXIBLE
U CHECK THE DEPTH O{OF THE SPILLWAY TD ENSURE ITISAtAMMU1MOFi.5 FT.BELOW IF ARMOR H A PLUMBER'S
IS CLOGGED,THE BE AND THE
m . 4,PROVIDE SUFFlCIEM BOOM AROUND DIVERSIONS PERMIT MACHINE REGRADING AND TO,SO THAT FL(W WILL BYPASS TO DAMAGENATURAL,EMBANKMENT.
STABLE AREAS LOCATE BYPASS OUTLETS THE LOW POINTOFTHE EMBANKMENT. ALL ANY SETTLEMENT OF THE OBSiRUCiI@JCLEARED WITHAPWMBER'S SNAKE Ofl BY FLUSHING WITH WATER.BE SURE AND HOSE
CLEANOIT. SO7HAT RdV WILL HOT DAMAGE THE EMBANKMENT' EMBANKMENT TO SLIGHTLY ABOVE DESIGN GRADE.ANYRIPRAPDISPLACEDFRUM REPLACE THE ORIFICE BEFORE REPOSITIONING THE SKIMMER. 3°LD.SC11.40 nOW CONWOL ORIFICE
6,VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION,UNLESS IT WILL REMAIN IN PLACE 11.STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE 711E SEDIMENT POOL PVC PIPE CUT SMOOTH CIRCULAR
a LESS THEN 30 WORKING DAYS. THE SPILLWAY MUST BE REPLACED IMMEDIATELY. CHECK THE FABRIC LINED SPILLWAY FOR DAMAGE AND MAKE ANY REQUIRED REPAIRS WITIi
a AN(REFERENCE:
ERENC :SURFCEST!{ETRATION).IMMEDIATELY IOPENING NDICAEDONBASINION DRAWING NUMBER:
.. 3.AFTER ALL SEDIMENT-PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED. FABRIC THAT SPANS THE FULL WIDTH OF THE SPILLWAY.CHECK THE EMBANKMENT,SPILLWAYS,
o A MAINTENANCE SHOW EEDSTARFACE STABILIZATION). AND OUT LET FOR EROSION DAMAGE,AND INSPECT THE EMBANKMENT FOR PIPING AND ` INDICATED ON BASIN SITE
Flfh10VE il{E STRUCTURE AND All UNSTABLE SEDIMENT.SMOOTH THE AREA TO PLAN
12.SHOW THE DSTANCE FROM THE TOP OF THE SPILLWAY TO THE SEDIMENT GLEANOUT OAST!BOTTOM
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