20210908 - Northwest Mine Mine permit

SHEET INDEX
Cl COVER SHEET
C2 MINE SITE LAYOUT PLAN
C3 DRAINAGE AREA MAP
NORTHWEST MINE
MINE PERMIT MODIFICATION
NCDEQ DEMLR MINING PERMIT # 10=82
BLUE BANKS LOOP ROAD
CITY OF NORTHWEST, NORTH CAROLINA
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LOCATION MAP =
SCALE: NTS
C4 MINE MAP MAY 2021
C5 RECLAMATION PLAN
C6 EROSION CONTROL NOTES
RAFTING AND DESIGN
C7-10 EROSION CONTROL DETAILS
SERVICES, INC.
SITE DEVELOPER/OWNER
LANDSDOWN CORPORATION
7406 CONCORD HIGHWAY
MONROE, NC 28110-6001
CONTACT: VINCENZO LABARBERA
PHONE: [phone]
REVISIONS
C11-13 EROSION CONTROL CALCULATIONS 2021.08.10 - REVISED PER ADI RECEIVED JULY30,2021
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
draftinganddesignCymail.com
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
project no. 2021-07

SITE DATA TABLE
OWNER: PRIMO HOLDINGS LLC
3214 SUMMERFIELD DR
MONROE, NC 28110-6001
PIN:226100495187
PARCEL ID: 00500016
DEED BOOK: 03922
PAGE #: 1385
TOTAL PARCEL AREA: 322.4 AC +/-
EXISTING ZONING: NW -CI
EXISTING SPECIAL USE PERMIT AREA: 80 AC +/-
PROPOSED SPECIAL USE PERMIT AREA: 322.4 AC +/ (242.4 AC ADDITIONAL)
PROPOSED USE: MINING CLASS II (SAND & GRAVEL)
PARKING CALCULATIONS
REQUIRED:
1SPACE/PER EMPLOYEE X 6 EMPLOYEES: 6 SPACES
PROPOSED:
6 SPACES (INCLD H.C.)
PROPOSED MINING AREAS
EXISTING PIT
63.3 AC
PIT EXPANSION
86.2 AC
ULTIMATE PIT
149.5 AC
PLANT SITE
5.5 AC
TAILINGS/SEDIMENT PONDS
2.5 AC
(INSIDE OF ULTIMATE PIT)
STOCKPILES
16.6 AC
(INSIDE OF ULTIMATE PIT)
OTHER MISC. AREA
22.7 AC
(BERMS, TEMP. DIVERSIONS, ETC.)
PREVIOUSLY PERMITTED
73.4 AC
AFFECTED AREA
TOTAL AFFECTED AREA
177.7 AC
VEGETATIVE AREA
144.7 AC
NATURAL AREA
TOTAL PERMIT AREA
322.4 AC
LEGEND
PROPERTY
PERMIT BOUNDARY
WETLAND "
PROPOSED PIT
BUFFER
PLANT SITE
AFFECTED AREA
CREEK
BERM +++++++++
/ \ CCUPIEDRESIDENb\
GENERAL NOTES:
60 FT +/_ FROM PIT
7 1. EXISTING TOPO IS STATE LIDAR FROM BRUNSWICK COUNTY GIS DATA.
WILLIAM THOM S E JR \
ILLIAMS THOMASE I PIN: 2ED:C R 2. BOUNDARY SURVEY PER PLAT PREPARED BY BRUNSWICK SURVEYING INC., SUPPLY, NC
INSTALLATION PIN:226200326099 ZO ED:C -RR \ SEALED JULY 25, 1999
ZONED: CO- R
1. REMOVE ALL \� 3. STREAM AND WETLAND LOCATIONS BASED ON USGS MAPPING AND PER PLAT PREPARED BY
TREES, BRUSH CCUPIED RESIDENCE
467FT+/_FROM PIT / BRUNSWICK SURVEYING INC., SUPPLY, NC SEALED JULY 25, 1999.
EXISTING GROUND i\ i' E ROPOSED PROGRAM
4. AS PART OF THE NCDEQ MINE PERMIT THE OWNER IS REQUIRED TO BOND THE RECLAMATION OF
THE AFFECTED AREA OF PROJECT BASED ON THE STATE MINING XISTING GROUND TOTAL AFFECTED AREA (TYP) / 5. DUST SU PRESSION ON ACCESS ROADS AND PLA T S TE SHALL MEE THAMOUNTS. E STANDARDS SET FORTH
PROPERTY/PERMIT BOUNDARY (TYP e 177.7 AC +/_
322.4 AC +/- IN THE NCDEQ MINE PERMIT.
CORBETTBR535460 n 6. A PROPOSED 100 FOOT WIDE MINIMUM UNDISTURBED BUFFER WITH AN ADDITIONAL 50 FT WIDE x
NOTE � PIN: 226200535460 V
1. SEE PLAN THIS SHEET FOR WIDTH ZONED: Co -RR /'9/� / 6.25 FT HIGH VEGETATED BERM FOR A TOTAL OF 150 FOOT MINIMUM BUFFER WILL BE MAINTAINED
HEIGHT DETERMINED BY SIDE SLOPES. PROPOSE / / / / AS< BETWEEN THE EXCAVATION AND ANY ADJOINING PROPERTY BOUNDARY.
2. WIDTH INDICATED ON PLAN IS BOTTOM AFFECTED AREA TYP +++++++++ / / / ' O
( ) ++++++ } } ,+'+++ z CORBE17BROTHERS 7. PER SECTION 5.3 H (CLASS II MINE) OF THE CITY OF NORTHWEST UDO ALL MINING OPERATIONS AND
WIDTH. 91.7 AC +/- // '// ,+,* +,*,+, , '// '// '// AA PIN:zzszoo53saso THEIR ASSOCIATED ACTIVITIES SHALL COMPLY WITH THE FOLLOWING STANDARDS WHEN
3. SEED PER TEMPORARY/PERMANENT ,++ , + ZONED: CO -RR
DEWATERING OCCURS:
SEEDING SCHEDULE PER DEMLR.
/ / / I. MUST BE LOCATED A MINIMUM OF 100 FEET FROM ALL PROPERTY LINES.
4. NATURAL VOLUNTEER VEGETATION TREYMACINC II. THE DEPTH OF EACH EXCAVATION PIT SHALL NOT EXCEED 35 FEET.
SHALL REMAIN.(TREES, GRASS, ETC.) PIZONED:CO-RR5 / / +++ / / COMMENTARY. THE PUMPING OF SURFACE WATERS FROM ONE EXCAVATION PIT TO ANOTHER
5. BERM ENDS SHALL BE 4:1 SLOPES LIKE / '// '// '// EXCAVATION PIT WHEN LOCATED ON THE SAME PARCEL OF LAND AS THE MINING OPERATION SHALL
SIDE SLOPES. / / / 0' VEGETATIV ERM (TYP) NOT BE CONSIDERED DEWATERING.
6. BERM SHALL BE 6.0 FT MAX HEIGHT. /
H=8.4' 8. THE SUBJECT PARCEL HAS BEEN UNDER A STATE MINE PERMIT SINCE APRIL 13, 2009 -
VEGETATIVE BERM (TYP) VEGETATIVE
BUFFER
/ +� / / / SIDESLOPES= NCDEQ PERMIT # 10-82.
VEGETATIVE BUFFER (TYP) +*,*,*, OTTOM WIDTH=5 ' 9. ALL STATE MINE PERMITS ARE LIFE OF MINE PERMITS THAT REQUIRE AN ANNUAL FEE TO THE NCDEQ
/ +++ /
+ + ' DEMLR. ANY MODIFICATIONS TO THE PERMIT ARE REQUIRED TO BE APPROVED BY NCDEQ DEMLR AS
NTS •,•+ 100' MIN UNDISTURBED A PERMIT MODIFICATION.
LANDSCAPE REQUIREMENTS
•'• VEGETATIVE BUFFER (TYP)
i
i
i
ADJOINING PARCELS *�*
+i + ++*+ +
CORBETT PACKAGE COMPANY
+ , + + + + / / / CCUPIED RESIDENCE PIN: 228200819350
1 RANGEL SILVA 22 NORTHWEST
RODOLFO LAND COMPANY LLC
50' VEGETATIVE BERM (TYP /+��' *+*+' / / / 95 FT+/_FROM PIT ZONED: CO -RR
PIN: 226102693900 PIN: 226100286401 H=8.4' CCUPIED RESIDENCE
ZONED: 02693 / + '/, '/, ' 284 FT +/- FROM PIT
CO-RRZONED: CO -RR
SIDE SLOPES=3:1
2 ORTIZ DANIEL CASTILLO 23 NORTHWEST BOTTOM WIDTH=50' , ��^one 54CFT+A FROM PITRESIDEN
ETUX LAND COMPANY LLC «',+ / / Qyo
S 4 o d CCUPIED RESIDENCE
+'+ / ' ° ° o °
APARICIO IRMA LEON PIN: 226100285361 / � �$ 460 FT +/- FROM PIT
PIN: 226102691970 ZONED: CO -RR +,+
ZONED: CO -RR I / ', ', ,*, ,♦ / / / 3a A° 1 / CCUPIED RESIDENCE
24 KINCAID LINDA CRIBB • I , Q 624 FT +/_ FROM PIT
i
3 NORTHWEST PIN: 226100284190 • �'+*+ + \ CCUPIED RESIDENCE
LAND COMPANY LLC ZONED: CO -RR O / / ,•, EXPANSION * *+*+ + ' / % / /\ 719FT+/_FROM PIT
PIN: 226102599932 -/
ZONED: CO -RR 25 DELGADO ORLANDO I '/, '/, ••,• CCUPIED RESIDENCE
PIN: 274829 / "1 / / 59.9 AC + - *+�+* / / / / 810 FT +/_ FROM PIT
4 BECK LINDA H ETVIR ZONED:ED: CO -RR a <
BECK MICHAEL R I O / •,• ,•,
PIN:226200506044 26 NEFF STEVEN
ZONED: CO -RR PIN: 2226100273763 V / / •,•� +*+ / / �N9m ���o
ZONED: CO-RR\,1b
5 ROMEROIRINEOoo$Q�
PIN: 226200409047 27 THOMPSON KEVIN ET = J ++++++ °$�sc o z 2
ZONED: CO -RR THOMPSON KANIECEUWA Q pmrn o 2° o do 0
PIN:226100273518 QN 2 m/� / �•, • +-+♦♦ '� �' �'�'�♦�♦♦
6 NORTHWEST ZONED: CO -RR <C/ �• PLANT TE + r /
LAND COMPANY LLC J 5 + +* / / / / / / / / /OG 66 FT
ROMFPIN: 226200508464 28 SILVA EUSTACIO RANGEL 566 FT +/_ FROM PIT
ZONED: CO -RR PIN: 226100272477 °; / / / / / / /
ZONED: CO -RR \ *, o ; o N z z OCCUPIED RESIDENCE
LAYDOWN YAR % ' \ / / zNx o.. oo �zz % % '// '// '// 3�2�+/�R6'MPIT a' /
7 JACOBS ELOISE +*,*• o° m N° z o. o z IN7<il
PIN: 226100249881 29 ANGEL BAZAN JOSUE AND / ,�,•,• + ++ ++ / , o °z P N x o o z° / / / / / / % / / R�s<ORRI
ZONED: CO -RR ROMERO ANGEL B / / • • o� eti ° o ° n ^ 3 ~ q E<o EEq W I /
/
/ ' *�• P � P p�m oozm oovx N:us ui3N
PIN: 226100272321 ,*,* / / / oJ�6ry00� w < ° o ZZa m NORTHWEST NORT �ONEp °ps0a33
+ A X.
LAND COMPANY LLC C N T cp-RR 2 /
8 FALSO VINCENT ETUX ZONED: CO -RR , , / , ,' / ,*,* / / �JES� X r y / pN0 oMp Es
} ix
i V Q O +. r PIN: 226200503268 /N: qNY
FALSO GILDA , ' / , ' / } , ti o zzszpo LLc NO /
} i CCUPIED RESIDEN ZONED: CO -RR „ 2°NED 506436 LqN RTl-/W 7 W
PIN: 226102663083 30 DELGADO LEANDRO ET ,� , ,' / ' '+�.�.� +�+, / / 208 F PIT °aRR a/y z26MagNYT Q'
ZONED: CO -RR DELGADO MIRIAM A / , / , , , , , 2p ANET' 20°5 t[c /
SITE ENTRANC ' / ' / + • / N os 1► I
PIN:226100271281 , , � , , , * / NZOZ S LANDING ROAD NE f�DO-RR" o
9 FALSO VINCENT ETUX ZONED: CO -RR W/GATE ' / /' ,' /' , + '+'+ / / / i ° °n o z z
FALSO GILDA / ' / / ,' ' / i *, o; 2 ro ° z v CCUPIED R N
/ , / , , ' mr000 vn NZz Q �T
PIN: 226102664079 31 REYES GALVAN RENE FUEL TANK STORAG / / / ' / / ' / , , / /',' / / , *�' /, '/, ', o v m �a ° vs 5 N z o z z ti O z 4 FROM PI
ZONED: CO -RR PIN:226100271151 W/SECONDARY / / ' / ' /' /' ' / +'. jpo-�-� °,o�U2022 �zzz zN°A omoA LS
ZONED: CO -RR / , , / ,' ,',�/ / pNF Ao4Fi;f °°°zNo oN`;= oov~ w\ C RESIDE P39{;R
0 o�z o22 C ES N E TY
CONTAINMENT ° ry o OA 2"O No
+ w „ N 3 � v °f g ° � n � q o i m ^' ti ° 0 588 FT +/- FROM PIT 572 FT +/- FROM PIT o `�gRE 96g
10 MAHKPARTNERSLLC / / 1 / 1 / , , ,�, / / 5 ° �o�x o$z� A��� &X8 N� vN OSWE 61026
PIN: 226102665210 32 LACKEY RORY S ETUX SEE DETAIL SHEET C9 HAUt FZQAb �fYl1 / / o a ° a > < m r 4 ° o Y o 2 CUPIED RESIDENCE N z ° B p1NON Co_RR
/ / � / / / * zno,z`^ �z ASS P�aD= m^'o2 vs 571 o..p B @9 Z°NIO.
u
ZONED: CO -RR LACKEY YONG OK
PIN: 226100271010 / ,' /, }, ° w F i z N o o N z F o
50' VEGETATIVE BERM (TYP / / / PARKIN/ } w v °Ha ^ti o m 00 ? �
�o
11 NOBLES FERNIE L ETALS ZONED: CO -RR '� / % � / i%`1' 7 � / / ' / / ° a � 2 m� o � y o ,� � o �, O F` q / %u' / 3; i
NOBLES MELODY R H=8.4'
IHC/ A3 P m= I O zo
Ngz yeq.OPIN:226200509827 33 BOSWELL BRENDA TYNER SIDE SLOPES=3:1 z '60S�w,
o
9 W W Y
ZONED: CO PIN: 226200701130 /SCS /
BOTTOM WIDTH=50' / /, // �AL IO I U
-RR
ZONED: CO -RR
m
12 LANDAVERDE FERNANDO A ETUX / '// / / / / / / / / '// , /' ,' /' ' / •,•, / / A 69 FT /- O P
OFFIG` / \ i
LANDAVERDE NOHEMI A 34 OZORIA PURR BALLE \
i� PIN:226200508922 PIN:226102696815
ZONED: CO -RR ZONED: CO -RR }
13 JONES KATRINA TAMIKO 35 COOK THOMAS LEE ETUX % j / / V�GETAD' (TxP� -Li-
j /
PIN: 226200516022 COOK MELISSA LANIER '}' '+ /' }
} } , , '..* '/ P R R W s� Y Y, Q IN�" /SQPP) Y'/
//
IN/ '
ZONED: CO -RR PIN: 226102667709 * * + / / , w v SEALED J'LY 2�1999 W
ZONED: CO -RR / / / / / / }*} }*} + +*+*+ T / / �✓' / 0' �TkEAM E�U�fE'Rt
14 DE LA CRUZ i + + +
MEJIAALEJANDRO 36 MITCHELL CALVIN JR '// '// / / / % +'+ ' ++'+' F/RO/MaANKROF%CREEfF
PIN:226100299465 MITCHELL COLLEEN }' } +*+ ,*,• • EXPANSION ++ ' ' �CUPIED?2E5'IDC
} } } } + + + + }*� / �i / i / L� L1N� �RPI*/(TXP� i i i / / / / / / / / / FTj,F1 P�
ZONED: CO -RR PIN: 226102665828 } } « + + +
OCCUPIED RESIDENC • } } + + AREA #2 + PE, U GS Q A MAP,
ZONED:CO } i } } + + + + + /)✓ / / / /
258 FT +/- FROM PIT / * } + % / / / % % + + + + / /
15 DE LA CRUZ } } } + + + 5.6 AC /- + O, UNDIS URBE
MEJIA SALOMON 37 FALSO VINCENT ETUX 14 FROM
�(( / [ ��
PIN: 226100299334 FALSO GILDA +'} }'+* +'+' +*+ P S D FROM VVEf'LAf D`Y *tl
OCCUPIED RESIDENC /
ZONED: CO -RR PIN: 226102664947 + } } + + * + + +
219 FT +/_ FROM PIT / + + } + + +*+ } } + + +
ZONED: CO -RR / / },+, +++ A G`TD dR�A) ` �`+ + + +,�
16 NORTHWEST ,5 +*+ + + }++ / 64/ +� / % / / '� + +++
LAND COMPANY LLC 38 SUPPLY GROUP INC. / +
PIN:226100298164 PIN:226102673190 q,E�gCq RU +++' +*+
ZONED: CO -RR ZONED: CO -RR
OCCUPIED RESIDENC -10
17 PEARCE DANNY L 39 BILLINGS ROBERT ETUX RR
263 FT +/_ FROM PIT
PIN: 226100298023 BILLINGS LYNDAL \ /, XCA AT
ZONED: CO -RR PIN: 226102674202 OCCUPIED RESIDENCE •,• S
ZONED: CO -RR
256FT+/- FROM PIT 16 / / ,*, AREA
18 BENTON ALYCIA M }' EXCAVATED +,+
PIN: 226100287852 40 HENRY FLOYD \ '•' S P *'*' ' / �� /
ZONED: CO -RR PIN: 226102674302 100, UNDISTUR E
ZONED: CO -RR VEGETATIVE BUFFER (TYHI 17 Q }*} +* W W W
19 LOPEZ SALOMON DELA CRUZ ET r O / / }• EXCAVATED
HERNANDEZ YOLANDA MEJA 41 FALSO VINCENT ETUX / \ • • 'TEMPORARY
PIN:226100287712 FALSO GILDA OCCUPIED RESIDENCE
ZONED: CO -RR PIN:226102674429 251 FT+/_FRO M PIT P,N. CoyP EST , }•}• STOCKPILE AREA, , ++++
ZONED: CO -RR 2pNEo10C°ag83° +*}} 0.9 AC + EXISTING PIT EX A AT
O.
20 ARELLANO NOEL GOMEZ OCCUPIED RESIDENC 3 +/- AR A +*} /
PIN: 226100286672 42 SPENCER DARRYL C II 250 FT +/- FROM PIT •'•' I / ,
ZONED: CO -RR PIN: 226102653303 ,e
ZONED: CO -RR TREYMACINC / ,•, ,•,•,• • / / / / / / /
21 HINES WILLIE L JR ETUX PIN:226100080379
ROBBINS TYESCHA N ZONED: co -RR
PIN:226100286541 ,• }*}* V G T,/ E, TYP
ZONED: CO -RR OCCUPIED RESIDENC 19 , ,
241 FT +/_ FROM
}+ EXCAVATED ++++ + i5L S : '
STREET YARD (BLUE BANKS LOOP ROAD): OCCUPIED RESIDE 20 / / ,*} A UMP ++�+*+* PIT '// // // // '//BDTT)ONt W{DTH=80'///
249 FT +A FROM PIT EXPANSION / / / / / / / /
REQUIREMENT: 20' WIDE - 1 CANOPY TREE OR 2 UNDERSTORY TREES PER 100 L.F. FRONTAGE \ /}' *+*+ AREA #1 RdP6SLb
OCCUPIED RESIDENC z1 / / }•} *�+++++ / / / / U 4.2 AC +/- / / AFFECTED AREA (TYP)
PROVIDED: 20' WIDE - 2 CANOPY TREES (179 LF OF FRONTAGE) - EXISTING VEGETATION FOR 242FT+/_FROM PI •}•
REMAINDER OF FRONTAGE
PLANT LIST
KEY
BOTANICAL NAME
COMMON NAME
QTY
PLANTING SIZE
QN
QUERCUS NIGRA
WATER OAK
2
2" CAL. / 10-15' HT.
7 1 �1000 FT PERMIT 42
NOTICE BUFFER
/ f� _L
ADJOINERS 'SOUTH'
SCALE. 1 =1000
250 0 250 500 750
Scale: 1" = 250'
OCCUPIED RESIDENC 22
Q
227FT+/-FROM PIT \ +++++++++++
} } + + + + + + + + + + + +
+ + +
+ + +
PIN z ,6 o°Ru2°N *,*+ / / / / / '// �/ /W / / / ON d[. I B W
OCCUPIED RESIDENC `I'fUK�w V (,r,,/'
235FT+/-FROM PIT ERR o EXPANSION E P RAR / / / / / / / / / / / F'aM ETLAISIDS /
/ - W W W W W W W W W W W VV
AREA #3
24 / +* 16.5AC+- 15.7A
P1N�6Tq 0 +*+ W w, W, w, ✓�- W
OCCUPIED RESIDENC 2oNE01o02Z4cFL }*}
269 FT +A FROM PIT Co-RRss +} FALSO VINCENT ETUX \
FALSO GILDA
PIN:226-2-88-
•,• ZONED: CO -RR
25
OCCUPIED RESIDENCE '
295 FT +/_ FROM PIT +'}
/ 26 / / }•} }•}•}• + Y[Mrr OF DISTURBANCE (TYP) �(//�
/ / / / / / / / / / / / / / / / T/$.4/AC',/'+/// / / / / / / / / / /� / / / / / / / / / W/ / / -//
OCCUPIED RESIDENCE % % ' +•+'}
352 FT +/_ FROM PIT * } } } + FQ/j (�l'
_O V F A
OCCUPIED RESIDENCE } } } } } +
8
9'
W W W
425 FT +/- FROM PIT 27
W W W W
/W
W W W W W W
qck�
28 V I% /� 0' STREAM BUFFER (TYP) GATE
/� i% // l„ % /� / / / / / / / / / / / / / / '// '/. %N % / �% / / i/ '//� % l„ % �% /� / / % '//� '// l„ % N% % / / % /� '/. / % '// G �RFq
/W FROM BANK OF CREEK SITE ENTRANCE
OCCUPIED RESIDENCE i BLUE BANKS LOOP ROAD WHEEL STOP (TYP)
569 FT +/- FROM PIT
PER SEC.6.12.5
/ �/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / RIST MILL BRANCH (TYP) 30' WIDE ACCESS ROAD (TYP)
OCCUPIED RESIDENC w w -,
661 FT +/- FROM PIT
29 w w v v w u v�w v v v w w v w w 'w v w w v v w w v' w v v v v v C w SCALE HOUSE
500 SF
OCCUPIED RESIDENCE
/ / /v / / /w /� /
/ /w /
757 FT +/- FROM PI
30
T, '�,
OCCUPIED RESIDENC
859 FT +/- FROM PIT
31IV
100' MIN UNDISTURBE
OCCUPIED RESIDENC
32
VEGETATIVE BUFFER (TYP)
I WETLANDS (TYP
W/ H.C. RAMP
VAN ACCESSIBLE
HANDICAP SPACE (TYP)
CONCRETE SURFACE //
6 PARKING SPACES - 9'X18' MINy
PER SEC. 6.12.5
INTERNAL HAUL ROADS (TYP)-
UE LINE STREAM (TYP
PER USGS QUAD MAP
/ 34 /
i
BOSWELL BRENDA TV R /
PIN: 226102792925
ZONED: CO-R /
C
SECRETARY OF HOUSING
& URBAN DEVELOPMENT
PIN:226102793731
ZONED: CO -RR O
'14, 6,
��Os'o2O �~ OO
\C4'Qq''�7�F CCUPIED RE NCE
\ 1081 FT +/FROM T
20NZ 102?4 j' 1NC
ED: CO Rosy CCUPIED RESIDE E
64 FT +/_ F�PWPIT
MANUF HODS CTRCT CCU ED RESIDENCE
SE/SUB PT CER,T� 1055 FT - FROM PIT"PIN:226,02791088�
ZONED: CO -RR
CCUPIED SIDENCE /
SAULS LAWRENCE J ETUX 1)53 FT +/- F M PIT
SAULS LOUISE L
PIN:226102781992 /
ZONED: CO -RR CUPIED RESIDJJJ E /
SEIDT JUSTIN 1084 FT +/_ FROM PI
PIN:226102782812
ZONED: CO -RR
SMITHLAMEIKAA AND CCUPIED RESIDENCE
SMITH WILLIE
2782 R 1 FT +/_ FROM PIT
PIN: 226102782732 �
ZONED: CO�RR Lu
BLEVINS HENRY ffflll Z
PIN: 78zsaz 11 CCUPIED RESIDENCE
ZONED:NED: CCO-RR ILJI Z 1204 FT +/- FROM PIT
POWERS BRIAN C ETUX }>>>>
POWERS CAT
PIN: 22610278252782552 i
ZONED: CO -RR LLI
GARCIA JUAN MELGAR ETUX CCUPIED RESIDENCE
GARCIA KIN 1- 1220 FT +/- FROM PIT
PIN: 226102782442 U
ZONED: CO -RR
WHITETFOMASWET N
WHITE MARILYN
PIN: NED--CO-RR CCUPIED RESIDE CE
ZONED: CO -RR
o +_
1271 FT / FROM PI
P1'1N-0N M-
`Ai2pNE01 C0.RR� E7` �
?O'1'�o�ST'ts
P o
C IED RESIDENCE
�s 1340 FT +/= FRQM PIT
T ° \
�s 2c
Faso -.� 2
UPIEDT+/- RESIDEN E
1336 T +/- FROM PIT
/ '11\ >-"/
-+EQUIPMENT
LAYDOWN YARD (TYP)
\ +
+ + + +
+ + + + +
FENC� (TYP) + + + +
CHAI LINK + + + +
(NO BARB WIRE ALLOWED + + +
PER �DO SEC 6.10.14) + + +
SCALES +
1006FT+/_FROM PIT // / 9 PER BRUNSWIC SURVEYING INC., SUPPLY, NC
\ / i SEALED JULY 25 1999 IN�t=T nOn
RiA�(M,V1ROB
P1N,F/ARO ✓ESRTAND
2pNE�'Cp RR 9q PIN: 0 6DQ474
/ / ZONED: NW-F2R
PRIM0 HOLDINGS LLC
BALLARD SEKE I BALLARD FRANK E SR I SPENCER OWENT BLUE LINE STREAM (TYP PIN: 226102563217
PIN: 226100268621 PIN:226100364608 PIN:226100369732 I ZONED: CO -RR
ZONED:NW-RR I ZONED: NW -RR I
ZONED: NW -RR PROPERTY BOUNDARY
I OFFICE
500 SF
TYPICAL SITE ENTRANCE & SCALE HOUSE/OFFICE W/PARKING
SCALE: 1 "=100'
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford,
North Carolina
27330
[phone] phone
draftinganddesignCymail.com
O
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
JULY
30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
Drawn by:
1 "=250'
MTB
Sheet:
Designed by:
MTB
CZ of 13
Reviewed by:
MTB
Project Number:
Date:
DDS JOB #: 2021-07
MAY 2021
A
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Scale: 1" = 250'
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EXPANSION
\ AREA #4 1 I ` \ / i =` `///
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5.5 AC
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RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford,
North Carolina
27330
[phone] phone
draftinganddesignCymail.com
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY
30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
Drawn by:
1 "=250'
MTB
Sheet:
Designed by:
MTB
C 3 of 13
Reviewed by:
MTB
Project Number:
Date:
DDS JOB #: 2021-07
MAY 2021
p

CONSTRUCTION SEQUENCE MINING ACTIVITY
PHASE 1
1. PRIOR TO COMMENCEMENT OF CONSTRUCTION ACTIVITIES CONTACT NCDEQ LAND QUALITY SECTION [phone].
2. INSTALL SILT FENCE BELOW ALL DISTURBED AREAS WITH SILT FENCE OUTLETS PER PLAN.
3. COMPLETE EXCAVATION OF EXISTING PIT. BEGIN RECLAMATION OF PIT SLOPES AS MATERIAL IS REMOVED FROM EAST TO WEST.
4. INSTALL PERMANENT BERMS AROUND PIT EXPANSION AREA.
5. ONCE BERMS ARE COMPLETE AROUND PIT AND ARE STABILIZED AND SEEDED. MAINTAIN SILT FENCE UNTIL THIS ACHIEVED. REMOVE
TEMPORARY DIVERSIONS AND TEMPORARY SKIMMER BASINS ONCE POSITIVE DRAINAGE IS ACHIEVED TO THE PIT. MAINTAIN ALL
DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED.
6. EXCAVATE EXPANSION AREA #1.
7. INSTALL SKIMMER BASIN #6. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL BASINS. MAINTAIN
SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL GOOD GROUND COVER IS ESTABLISHED.
8. INSTALL TEMPORARY DIVERSIONS #10 & 11. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD
GROUND COVER ON FILL SLOPES IS ESTABLISHED.
9. INSTALL PERMANENT BERMS AROUND PIT EXPANSION AREA.
10. ONCE BERMS ARE COMPLETE AROUND PIT AND ARE STABILIZED AND SEEDED. MAINTAIN SILT FENCE UNTIL THIS ACHIEVED. REMOVE
TEMPORARY DIVERSIONS AND TEMPORARY SKIMMER BASINS ONCE POSITIVE DRAINAGE IS ACHIEVED TO THE PIT. MAINTAIN ALL
DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED.
11. EXCAVATE EXPANSION AREA #2.
12. REMOVE STOCKPILE MATERIAL IN STOCKPILE AREAS #1 & #2 EXCAVATE MATERIAL IN THOSE AREAS.
13. INSTALL SILT FENCE PER PLAN BELOW ALL PERMANENT/TEMPORARY DIVERSIONS AND BASIN/TRAPS W/ SILT FENCE OUTLETS IN LOW
AREAS PER PLAN.
14. INSTALL SEDIMENT/SKIMMER BASINS #1 & 2. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
BASINS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL GOOD GROUND COVER IS ESTABLISHED.
15. INSTALL TEMPORARY DIVERSIONS #1,2,3 &4. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD
GROUND COVER ON FILL SLOPES IS ESTABLISHED.
16. USE AREA #3 FOR STOCKPILES WHEN COMPLETING EXISTING PIT. CLEAR ONLY AS NECESSARY FOR STOCKPILE AREA AND BASINS.
17. INSTALL SKIMMER BASINS #5. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL BASINS.
MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL GOOD GROUND COVER IS ESTABLISHED.
18. INSTALL TEMPORARY DIVERSIONS #8 & 9. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD
GROUND COVER ON FILL SLOPES IS ESTABLISHED.
19. INSTALL PERMANENT BERMS AROUND PIT EXPANSION AREA.
20. ONCE BERMS ARE COMPLETE AROUND PIT AND ARE STABILIZED AND SEEDED. MAINTAIN SILT FENCE UNTIL THIS ACHIEVED. REMOVE
TEMPORARY DIVERSIONS AND TEMPORARY SKIMMER BASINS ONCE POSITIVE DRAINAGE IS ACHIEVED TO THE PIT. MAINTAIN ALL
DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED.
21. EXCAVATE EXPANSION AREA #3.
1. INSTALL SILT FENCE PER PLAN BELOW ALL PERMANENT/TEMPORARY DIVERSIONS AND BASIN/TRAPS W/ SILT FENCE OUTLETS IN LOW
AREAS PER PLAN.
2. INSTALL SEDIMENT BASIN #3 & 4. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL BASINS.
MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL GOOD GROUND COVER IS ESTABLISHED.
3. INSTALL TEMPORARY DIVERSIONS #5,6,7 & 12. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD
GROUND COVER ON FILL SLOPES IS ESTABLISHED.
4. INSTALL PERMANENT BERMS AROUND PIT.
5. ONCE BERMS ARE COMPLETE AROUND PIT AND ARE STABILIZED AND SEEDED. MAINTAIN SILT FENCE UNTIL THIS ACHIEVED. REMOVE
TEMPORARY DIVERSIONS AND TEMPORARY SKIMMER BASINS ONCE POSITIVE DRAINAGE IS ACHIEVED TO THE PIT. MAINTAIN ALL
DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED.
6. EXCAVATE EXPANSION AREA #4.
ALL PHASES
1. ONCE GOOD GROUND COVER IS ESTABLISHED AND NO RUTTING OF SLOPES IS OCCURRING REMOVE ALL EROSION CONTROL MEASURES
WHILE MAINTAINING SILT FENCE ON DOWNSTREAM SIDE.
2. DEWATER ALL SEDIMENT BASINS AND SKIMMER BASINS FOR MAINTENANCE AND REMOVAL WITH SILT BAG PER DETAIL, IF NEEDED. /
3. MAINTAIN SILT FENCE AFTER MAJOR RAIN EVENTS.
4. STABILIZE AND SEED ALL DENUDED AREAS IN WHICH WORK WILL NOT RECOMMENCE WITHIN 7 WORKING DAYS OR 14 CALENDAR DAYS.
5. AS EXCAVATION AREA IS EXPANDED POSITIVE DRAINAGE TO BE MAINTAINED TO EXCAVATION PIT.
6. TEMPORARY SEED AREAS THAT WILL BE DENUDED FOR 30 DAYS OR MORE.
7. MAINTAIN ALL EROSION CONTROL DEVICES WEEKLY AND AFTER MAJOR STORM EVENTS.
10
KIMMER-
OUTLET P
La=7.5'
W=3.0'
d=12"
STONE 0=
l ++
++� TD #12�++
+++ SKIMMER
+�++ MERGENCY
--- --
+++' --- SPILLWAY (TYP)
+++ BAFFLE (TYF )
++' KB #4 (�P�
+ ++++ +
++ +++
+ +
\ + ++-
TD #7 +++++ \
/ / / ( f\ 1 ++ '+ /
(3BAFFLE$ (TYP
PROPOSED BASIN TABLE
BASIN ID TOP WEIR BOTTOM POOL TOP WEIR BOTTOM VOLUME VOLUME WEIR WEIR WIER RISER BARREL RISER
DIM DIM DIM DEPTH EL. EL. EL. REQUIRED PROPOSED LENGTH DEPTH LINING SIZE SIZE BASE
SB#1 189x366 177X354
147x324
5
48.0
46.0
SKB#2 84x156 72X144
54x126
3
48.0
46.0
SKB#3 75x138 63X126
45x108
3
47.0
45.0
SKB#4 84x156 72X144
54x126
3
56.0
54.0
SKB#5 85x158 73X146
55xl28
3
56.0
54.0
SKB#6 76x140 64X128
46xl10
3
42.0
40.0
SB - SEDIMENT BASIN
SKB - SKIMMER BASIN
STABILIZE AND SEED ALL
SLOPES IMMEDIATELY
EMERGENCY SPILLWAY TO BE CONSTRUCTED IN CUT
ONLY
41.0
79920 CIF
275715 CIF
NO OUTLET - NO DISCHARGE
43.0
17640 CIF
25758 CIF
10.0
2.0
CLASS A
NA
NA
NA
42.0
13320 CIF
19197 CIF
10.0
2.0
CLASS A
NA
NA
NA
51.0
17280 CIF
25758 CIF
10.0
2.0
CLASS A
NA
NA
NA
51.0
18000 CIF
26547 CIF
15.0
2.0
CLASS A
NA
NA
NA
37.0
13860 CIF
19878 CIF
10.0
2.0
CLASS A
NA
NA
NA
PROPOSED DIVERSION TABLE
SKIMMER SKIMMER BAFFLES
ORFICE
SIZE
4"
1.8"
3
4"
1.6"
3
4"
1.8"
3
4"
1.9"
3
4"
1.6"
3
CHANNEL ID
CHANNEL SLOPE
SIDE SLOPES
CHANNEL DEPTH
TEMPORARY LINING
PERMANENT LINING LINING DEPTH
TD#1
3.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#2
1.0 %
3:1
2.0 FT
NAG P300 VEG
BERMUDAGRASS
TD#3
3.0 %
3:1
2.0 FT
NAG P300 VEG
BERMUDAGRASS
TD#4
1.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#5
2.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#6
3.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#7
1.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#8
1.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#9
3.0 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#10
1.5 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#11
0.5 %
3:1
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS
TD#12„ ^"r^„ ^w�.c
"' ^"1 5,/r, c,w"T"
cT^w,w' 3,1
„rTT„'^
2.0 FT
STRAW W/ NETTING
BERMUDAGRASS -
PIT WATER RECYCLE/RECIRULATION OPERATION & MAINTENANCE PLAN
/
WI/
\ // OVERALL MINE EXCAVATION FOOTPRINT, THE PUMP IS REMOVED AND THIS SECTION OF THE J ( II ` PIT WILL BE ALLOWED TO REFILL UNTIL THE NEXT PUMP DOWN CYCLE.
5. PUMP DOWN PERIODS HAVE OCCURRED EVERY 3-4 MONTHS AT THIS SITE SINCE 2014
\� O \ / 4 6. WITHOUT OBSERVED CHANGES IN NEARBY WETLANDS.
/ AS THIS PERMIT MODIFICATION IS TO ADD MORE RESERVES/EXTEND THE LIFE OF MINE WHILE
MAINTAINING CURRENT PRODUCTION RATES, THE EXISTING PRACTICES UTILIZED AT THIS
MINE SITE SINCE 2014 AND CONTAINED WITHIN THIS O&M PLAN WILL CONTINUE BE FOLLOWED
r ' E I / AS THEY HAVE BEEN EFFECTIVE IN PROTECTING NEARBY WETLANDS.
7. A TEST PIT IN THE 59.9 ACRE MINE EXPANSION AREA NORTH OF THE OFFICE/SCALE HOUSE
/ REVEALED THAT THE WATER TABLE IS LOWER IN THIS AREA THAN THE CURRENT MINE
EXCAVATION FOOTPRINT. THUS, IT IS ANTICIPATED THAT THERE WILL BE LESS PUMPING
(AMOUNT AND TIME) TO ACCESS MATERIAL. LASTLY, AS MINING EXPANDS INTO THIS AREA, T
THE MINE EXCAVATION WILL BE MOVING AWAY FROM THE IDENTIFIED WETLANDS.
PIT WATER RECIRULATION AND RECHARGE:
DRY MINE SECTIONS ARE PUMPED INTO PIT SUMP #1 OR 2.
EMERGENCY y W W 2. PIT SUMP #1 IS USED FOR WASHING MINED MATERIAL AND ON -SITE DUST SUPPRESSION. THE
/ / / + SPILLWAY (TY ) �� `"- -s W SUMP IS ALSO CONNECTED TO PREVIOUSLY MINED AND IMPOUNDED AREAS SO THAT IT CAN
8. CALL NCDEQ LAND QUALITY SECTION FOR INSPECTION [phone]. // �/
/� � � � � OVERFLOW INTO THE REMAINDER OF EXCAVATED PIT AREAS THROUGH EXISTING
DISTURBED AREAS
TAILINGS/SEDIMENT PONDS 2.5 AC**
(INSIDE OF ULTIMATE PIT)
STOCKPILES 16.6 AC**
(INSIDE OF ULTIMATE PIT)
WASTEPILES 0.0 AC
PROCESSING AREA/HAUL ROADS 5.5 AC
MINE EXCAVATION 130.4 AC*
OTHER MISC EXCAVATION 22.7 AC
(BERMS, DIVERSIONS, ETC.)
TOTAL DISTURBED AREA 177.7 AC
* TOTAL MINE EXCAVTION AREA =149.5 AC
**AREAS BONDED AS HIGHER BOND AMOUNT
LEGEND
PROPERTY
PERMIT BOUNDARY
WETLAND
PROPOSED PIT
BUFFER
PLANT SITE
AFFECTED AREA
CREEK
BERM +++++++++
+++ / IT \ ` I ( / \ TD # / KB #3 (TYP)
Q +++ EXPANSION l J (3) BAFFLES (TYP ++ + \ / PUMPING SEQUENCE:
O� AREA #4 / TD 1 EMERGENCY �\ ++++'+ +
++++ l I y ' ' ' / \\ -� \ 1. ALL EXCAVATED MATERIAL IS BEING REMOVED IN APPROX. 3-4 ACRE SECTIONS WITHIN THE
-� / 59.9 AC +/- l l \ / SPILLWAY (TYP) SKIMMER / ) OVERALL MINE EXCAVATION FOOTPRINT.
O ++++ UEL TANK STORAGE \ \ / /� TD #KIMMER ++++ OUTLET PROTECTION #3 / J r- \ /1 2. ONCE THE WATER TABLE IS ENCOUNTERED, PUMPING OF WATER WITHIN THE MINE SECTION
O C� W/ SECONDARY CONTAINMENT \ \ // La=7.5' ( ( BEGINS AND IS SEPARATED FROM THE REMAINDER OF THE EXCAVATED POND AREAS BY
�\ + W=3.0' / COFFER DAMS OR UNMINED SECTIONS TO ENSURE THEY REMAIN FILLED WITH WATER.
SEE DETAIL SHEET C9 l
Zj % \ +++++++ + + + + + �� d=12" I/ 3. NO PIT WATER IS DISCHARGED FROM THE SITE DURING EXCAVATION AND WASHING OF
m� Q EXISTING STOCKPILE AREA #3 J / + STONE fd= C�A S A RIP �2A� J �Q/ l MATERIAL. ALL WATER IS RECYCLED WITHIN THE MINE SITE.
Jl(I PLANT TE 1 / / / ++++ / I ++++/ +++ I <-C'S / 4. PUMP DOWN ACTIVITIES HAVE BEEN AND WILL BE CONDUCTED USING AN EIGHT (8) INCH
/ / �/ PUMP RATED AT 2,700 GALLONS PER MINUTE. PUMPING OF EACH SECTION TAKES APPROX.
m� 5.5 AC + / \ LV X 3-4 DAYS TO DROP THE WATER LEVEL 10 FEET TO ALLOW ADDITIONAL MATERIAL REMOVAL
I ,I FOR NO MORE THAN 2 WEEKS. ONCE MATERIAL IS MINED WITHIN THIS SECTION OF THE
I } \ / I +++++
UT To '
+ + + \ / _GdANE DI
+ + +++++++ TD ++++++ -----
++++ ++ +
+++ TD #4 ++++ TONF/ A RIP P
O++ ' ++ -�
J � (EMERGENCY
SPILLWAY (TYP) w \
0 SKIMME
�(3) BAF/F�ES (T P,�A
I SKB # ( P / W
/ TD # ++;+++'++ �/ +++++ + ++a UTLET P TF�CTI N -�S �� \ TEMPORARY DIVERSION #101. THIS DIVERSION ALONG WITH THE REMAINING EXCAVATED PIT
++;+++ +++++ X. SEDIMENT POND ++`;' + / \� + + La=7.5' �\ W AREAS THAT ARE FULL OF WATER HAVE AND WILL CONTINUE TO SERVE AS A RECHARGE/
++;+ \
+ + SEDI + ++ + �� 1� HYDROLOGIC BOUNDARY BETWEEN ANY DRY MINE SECTION AND THE NEARBY WETLANDS
+++ + + MENT POND + .' W j .. ;'+ I/' PIT �� +++ W=3. \� '� \ ++ ++++ W ++�+++++ _ �� ALONG THE SOUTHERN PERMIT BOUNDARY.
++;+ WASH PLANT + OUTLET PIPE ++�+ y + d-
++ %/' EXPANSION + W \ ONE P1� LASS A RIP RAC \ \ 3. THE PIT WATER USED IN THE WASH PLANT IS COLLECTED IN A PIPE THAT DISCHARGES INTO T
OUTLET PIPE \ ` +'1+++ W ++.++++ AREA #2 W W THE EXISTING SEDIMENT POND (TO SETTLE OUT MATERIAL IN THE SEDIIMENT POND).
++++. ' ' ++.+ 3) B ES _(TYP) 4. ONCE THE WATER ELEVATION REACHES THE OUTLET PIPE NEAR THE TOP OF THE SEDIMENT
\ +++++ •.�+++ TD #10 5.6 AC +/- +++ \ J POND EMBANKMENT, THE CLEAN WATER FLOWS INTO THE EXISTING TEMPORARY DIVERSION
/ ++++ EX. WAS / +++ \� SKB #6 (TYP + / III
\ PLANT/SCREEN + . ++++�� \\ \ -'\ TD #1 ++++� #100 TO PIT SUMP #4 OR CAN BE DIRECTED INTO EXISTING TEMPORARY DIVERSION #101 TO
+++ I J W FLOW INTO OTHER PREVIOUSLY MINED AREAS. THIS DIVERSION ALONG WITH THE REMAINING
- / ++ ( III W EXCAVATED PIT AREAS THAT ARE FULL OF WATER HAVE AND WILL CONTINUE TO SERVE AS A
INTERNAL DRAINAGE - 149.5 AC J \ � / ++++. I I I \ RECHARGE/HYDROLOGIC BOUNDARY BETWEEN ANY DRY MINESECTION AND THE NEARBY
++++ I ++ +++ 1 j WETLANDS ALONG THE NORTHERN PERMIT BOUNDARY.
EXTERNAL DRAINAGE= 28.2 AC / \ ++++ \ \ FLOW DIRECTIO + _ - - + , +
+
+ + - " ++++ I 1 1 \ \ 5. EACH THREE TO FOUR ACRE DRY PIT SECTION IS ONLY DRY FOR THE PERIOD OF TIME IT
\ Q� / l \ ,l ) + / I TAKES TO EXCAVATE THE MATERIAL (APPROX. ONE TO TWO WEEKS).
/ X. TD # 100 ' _ _ ,1 PIT SUMP #4( +++++ / / / `6. ONCE EACH DRY PIT SECTION HAS BEEN EXCAVATED (DOWN TO AN AVERAGE DEPTH 25 FT),
/ \ I THE PUMP WILL BE REMOVED ALONG WITH ANY COFFER DAMS TO ALLOW THE GROUND
�� / \ \ PIT SUMP #1 \�I I I I I \ \ �� TO / ' ++++ WATER TO FLOW INTO THAT AREA.
/ O /� J /
/ � / \ \ I I I / I I_-- %/ / W ( W"7. ULTIMATELY, THE EXISTING SUMP AREAS AND REMAINING MINE SECTIONS WILL CONNECT TO
co
+' `/ / W�_W -� MAKE ONE LARGE LAKE AS SHOWN IN THE RECLAMATION PLAN. NATIVE VEGETATIVE
/ \ Q \ \ pl�f �I�1� II m _ - III SPECIES WILL BE PLANTED AND PERMANENTELY ESTABLISHED ON ANY REMAINING
/ ��1 / / I II r / II DISTURBED AREAS.
\ rf f /� EXISTING PIT p RAINS TO�EX. PIT /� I W� W
/ \ ++++ X. STOCKPILE\, \ \ I 63.3 AC +/- ,� X. TD # 101 V PIT SUMP #5/ 1 +++/ JI PROTECTION OF NEARBY WETLANDS:
/ +++ ( AREA #1 ( / /�� ) �� Jf ++'+'+ W W� I
+++ / '+ / 1. THE EXISTING MINE FOOTPRINT HAS BEEN MINED SINCE 2014 UNDER THE CURRENT
\ +++ \ \ /+++'+ I W 1 APPROVED MINING PERMIT UTILIZING THE PUMPING SEQUENCE AND PIT WATER
+ / ( RECIRCULATION AND RECHARGE METHODS NOTED ABOVE WITHOUT ANY VISIBLE IMPACTS
++'+ ++
/r L +++ A TO THE SEASONAL HYDROLOGY/WETNESS AND VEGETATION VIABILITY OF THE WETLANDS TO
\ rl P►T SUMP 3#� I ( J ) / \\ + / J J THE NORTH AND SOUTH OF THE MINING OPERATION.
/ �� I ` \ \ \\ / /++++++++++++ '� PIT J ( / 2. A 100 FT WIDE BUFFER CONSISTING OF 50 FEET OF EXISTING UNDISTURBED VEGETATION AND
1 \ I )� ++ / EXPANSION / / f I AN ADDITIONAL 50 FEET OF EARTHEN BERMS FOR A TOTAL UNEXCAVATED BUFFER OF 100
\ I I� I 1 ` / / ++++ + / ( ( I FEET WILL BE MAINTAINED AS A SETBACK BETWEEN ANY MINE EXCAVATION AND NEARBY
V �� l J
1 I I / I �r ++ ++ ++ �_ AREA #1 I r WETLANDS.
/ I I I c� - + + W 4.2 AC +/- l J S 3. IN THOSE AREAS WHERE THE MINE EXPANSION WILL REDUCE THE CURRENT BUFFER
\ \ / I I � / �� O ,� '�+ / \ / BETWEEN THE MINE EXCAVATION AND THE WETLANDS TO THE NORTH AND SOUTH, THE
/ I ( - / I \\ rl :`' �� l / WETLAND AREAS CLOSEST TO THESE EXPANSION AREAS WILL BE VISUALLY MONITORED
X. STOCKPILE AREA k\ / f I / + ++++' +++ + + ,i+�+' T ~+ FOR WETNESS AND SUSTAINED PLANT VIABILITY.
l ++++ I +'+'+++ '+'+++' + + / Q - / / / 4. WETLAND MONITORING WILL INCLUDE PICTURES BEING TAKEN, DATED, LABELED WITH
1 +++ + +
+++ \\ \ + +++++ + + + / / �30
/ + + LOCATION AND DIRECTION, AND OBSERVATIONS/CHANGES DESCRIBED ON THE SAME
TD # J y v v / / APPROXIMATE DAY AND TIME EACH MONTH. SUCH DOCUMENTATION WILL BE MAINTAINED IN
J ) l y \ J �� A LOG BOOK AND KEPT ONSITE FOR INSPECTION BY NCDEQ,
5. IF IT BECOMES APPARENT THAT THE PERIODIC PUMPING OF PIT WATER FROM PIT TO PIT AND
/ PIT \ \ ( / `� l �� W 41 / ! INTO THE RECIRCULATION AND RECHARGE DITCHES AND PONDS IS ADVERSELY IMPACTING
\ + EXPANSION / 1
\ f / 1 J / v l� J /v �� v // v� / W THE WATER TABLE AND VEGETATIVE VIABILITY WITHIN THESE NEARBY WETLANDS
/ AREA #3 ��� / t / J W / /W l \W W/W W /� W W W (BESIDES DROUGHT AND SEASONAL FLUCTUATIONS), PUMPING ACTIVITIES WILL CEASE AND
\ \ 16.5 AC +/- // / / / J I /� )� 1 �/\ \ W W W W W NO LONGER BE CONDUCTED IN THAT LOCATION. ANY FURTHER MINING IN THAT LOCATION
WILL BE CONDUCTED BY WET MINING WITH NO PUMPING OF WATER.
++
+
+ + KB #5 (TYP / /� -' / / 1 I / / ww w/ w
___(
_ ) 1
+++
++
v
W W W W y W
++ ++++ / /
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+
++ + \
EROSION CONTROL LEGEND = _ ++++++.++. _ + ++++ 3)BAFFLES(TY > / / -- 1 \ W W W� W W W W�Ii
s
\ MERGENCY �j/ l / w-- w \w w SPILLWAY TYP / \ �� v v v/ v v u/ �i vI u /� v
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v f/ v v v OUTLET PROTEC.5' -#arf v v v v
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+
SILT FENCE SF
TEMPORARY DIVERSION DITCH
OUTLET PROTECTION
J-HOOK W/ SILT FENCE OUTLET '- i / \ _/ 250 0 250 500 750
SILT FENCE OUTLET
Scale: 1 " = 250'
RAFTING AND DESIGN \
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
1 "=250'
Drawn by:
MTB
Sheet:
Designed by:
MTB
C4 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021

A 1/%—rr—[ .
1. EXISTING TOPO IS STATE LIDAR FROM BRUNSWICK COUNTY GIS DATA.
2. BOUNDARY SURVEY PER PLAT PREPARED BY BRUNSWICK SURVEYING INC., SUPPLY, NC
SEALED JULY 25, 1999
3. STREAM AND WETLAND LOCATIONS BASED ON USGS MAPPING AND PER PLAT PREPARED BY BRUNSWICK
SURVEYING INC., SUPPLY, NC SEALED JULY 25, 1999 .
4. AS PART OF THE NCDEQ MINE PERMIT THE OWNER IS REQUIRED TO BOND THE RECLAMATION OF THE AFFECTED
AREA OF PROJECT BASED ON THE STATE MINING PROGRAM REQUIRED AMOUNTS
5. TOPSOIL STOCKPILE MATERIAL SHALL BE USED TO PROVIDE FERTILE SOIL DURING RECLAMATION TO AID IN THE
ESTABLISHMENT OF PERMANENT GROUND COVER. UNUSED TOPSOIL MATERIAL IN THE STOCKPILE AREAS SHALL
BE REGRADED PER DETAIL TO PROVIDE STABLE SLOPES. ALL SLOPES SHALL BE PERMANENTLY STABILIZED AND
SEEDED.
4
0
BERM 4
�1
WATER LEVEL (APPROX.) V
I—K 11
NOTES:
3:1 MAX SLOPE ABOVE WATER LINE
3:1 MAX SLOPE BELOW WATER LINE AT MIN 20'
HORT. AND 10' VERTICAL DISTANCE
ALL DENUDED AREAS ABOVE WATER LINE TO
BE VEGETATED
PIT SIDE WALL RECLAMATION (TYP)
DISTURBED AREAS
TAILINGS/SEDIMENT PONDS 2.5 AC**
(INSIDE OF ULTIMATE PIT)
STOCKPILES 16.6 AC**
(INSIDE OF ULTIMATE PIT)
WASTEPILES 0.0 AC
PROCESSING AREA/HAUL ROADS 5.5 AC
MINE EXCAVATION 130.4 AC*
OTHER MISC EXCAVATION 22.7 AC
(BERMS, DIVERSIONS, ETC.)
a TOTAL DISTURBED AREA 177.7 AC
I V 1!'IL IVIIIVL L/�l.i/"IV 1 /IIIV /"IIIL/"1 —IY.7.J 11lJ
"AREAS BONDED AS HIGHER BOND AMOUNT
LEGEND
PROPERTY
PERMIT BOUNDARY
WETLAND
PROPOSED PIT
BUFFER
PLANT SITE
AFFECTED AREA
CREEK — —
BERM +++++++++
++++++++
NTS
INTERNAL DRAINAGE = 149.5 AC
EXTERNAL DRAINAGE= 28.2 AC
250 0
250
Scale: 1" = 250'
f
�-�VXV
CO-
+++ MINING ACTIVITIES "" +++
++ +++
+4 4 4y#+4+
4 4 4 4 4 4
++ ++.+-+
� + + + s J
/
+ + +'
+ + � +++++ SB # ++++
+++ REMOVED DURING +++ / \
I +++ MINING ACTIVITIES +++
++ ++
I
+ +++ ++
++ SKB # +++
*+* REMOVED DURING ',+ + +
I O ++++ MINING ACTIVITIES +++++++++ / \ + + + +
+ + + + +
+ + + +
Q
++ ++++++ ++ J/
Q ++ + ++++++++++++++ ++
+ + ++++++++++++++ ++
++++ +++ + + + + + +++++++++++++++ ++++++
\ ++ +
mJ ++++ +++ z r�
\ LAYDOWN YAR +++++ ALL TEMPORARY DIVERSION +++'+++
TO BE REMOVED ++++++ ++++
V� \ BUILDINGS & SCALE + +++++++ REMOVED DURING +++++++
TO BE REMOVED ,',' �'/',' +++ MINING ACTIVITIES +++++ \ O
\� \ ENTRANCE WITH
GATE
\
TO REMAIN �' +++++++ ++ + + + + + + �GVANET�S L DIN OAD�IE
1 1 ++
\ ACCESS ROA
TO REMAIN ,'�','��'�', +++ +++++ v v
4 STRAND BARBE SKB #
i WIRE FENCE (TYP) ',' ', +++ %� REMOVED DURING
WARNING SIGNS ' / '' '' +*+* MINING ACTIVITIES
ALONG FENCE ,' j +
++ ++
PIT ACCESS T + + /� ------�
i r
+ ++++++++ / `
+ + + + + + + + +
+
+.+ .+
+++ ++ +I+++ W +++++ + +++.
+ I I
/ +++ ++++ �� �- + ++++ +++
+
++ +++
++ ++ ++
+ \� 4+4+ ++4
\ 4 4 4 4 \ \ 4+4+ +4+
/ 4+4+ 4++t- 1 4 4 4+ 4 4 4 4+ 4 4
4 4 I
+ ++++ +++ ++++++++
++++ ++++ ++++ / + +
+++
+ +
/ +++ SKB #
+*+ REMOVED DURING
/ \ +++ MINING ACTIVITIES
++
++ +
+ ++
++ ++
+++ LAKE ACREAGE= 135.4 AC
++++ TOP OF WATER EL=37' (APPRX.) ++++++++
J \ +++ STABILIZE AND SEED ALL SLOPES +++++++
PIT SEEDED AREA=22.2 AC +:�'
+++ +++ +
+
++ + +++ , J
/ ++++ .++++++++++++++
+ +++
+++. +++++++++
/ \ + + + +
+++ + +++++++
/ +++ ALL TEMPORARY DIVERSIONS (TYP) + + +++++++++ + + + + ++++++++/� `3� / OW W \\ / / / \ \ /'
++ ++++++++++++ ++++ 1 //
\ ++ REMOVED DURING ++++++ ++++++++++++ tb
+++ MINING ACTIVITIES + + +++++++
/ +++ ++++++ + / I I �� / N
i
+++ SKB #5
REMOVED DURINGIV IVv v w
\ +++ �Y MINING ACTIVITIES
+
+ ASSUMED AAEZ
APPRX. EL=37' /
�Y --
+ r"V'IV1
_\ ++++ 1 V� W �V `Y •y ,Y �L `Y Vi `Y .V W �V `Y ,YW `Y -A,
/ ++++ +++++ //� 3:1 MAX SLOP�I / y/ w / w ��� ��\
/ +++ + ++++++ ABOVE--WATER'LINE
/ � � V
++ +++
� �� // J `Y �• J �V / �Y W �Y \ \\\ �� �� �f � / � / / � Y Y \ "�� � /�` �Y � �U/_ � �V / �Y —•dr � �V �V � W � W `� � / J �� � / � / / / �// � / ) \ \ / / \\ J / // / � \
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W �W W
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500 750
+++ +++
++ ++++ �—
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++ ++++ <
++ +++
++ +++
1 ++ ++++
+ +++
++ ++++
+ +++
+ ++++
++ +++
/ ++++
\ ++ +++
+ +++
+++ +++y+++++
+. ++++
-+*, SKB #4 * ++++++
� +++ REMOVED DURING + +*+*
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
1"=250'
Drawn by:
MTB
Sheet:
Designed by:
MTB
C5 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021

MAINTENANCE PLAN
THE OPERATOR IS RESPONSIBLE FOR MAINTAINING EROSION CONTROL DEVICES THROUGHOUT THE PROJECT DURATION.
ALL EROSION AND SEDIMENT CONTROL DEVICES SHALL BE CHECKED FOR STABILITY AND OPERATION FOLLOWING EVERY RUNOFF -PRODUCING
RAINFALL BUT IN NO CASE LESS THAN ONCE EVERY WEEK. ANY NEEDED REPAIRS SHALL BE MADE IMMEDIATELY TO MAINTAIN ALL DEVICES AS
DESIGNED.
SKIMMER BASINS:
1. BASINS ARE TO BE CLEANED OF SEDIMENT WHEN ITS STORAGE CAPACITY IS REDUCED BY 50%. PLACE SEDIMENT REMOVED FROM THE
BASIN IN A STOCKPILE AREA AS SHOWN ON THE PLAN OR AN AREA THAT HAS ADEQUATE EROSION CONTROL MEASURES.
2. CHECK BERM STRUCTURE, SPILLWAYS, AND SKIMMER PIPE EVERY WEEK FOR EROSION AND PIPING.
3. MAINTAIN BAFFLES AS DIRECTED BELOW.
4. ANY RIP RAP DISPLACED FROM SPILLWAY MUST BE REPLACED IMMEDIATELY.
5. AFTER ALL AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE BASIN (PHASE 2 OF CONSTRUCTION SEQUENCE) AND ALL UNSTABLE
SEDIMENT. GRADE ACCORDING TO GRADING PLAN OR BLEND IN WITH ADJACENT GRADES - ADDITIONAL COMPACTION EFFORTS MAY BE
REQUIRED IF STRUCTURE IS PROPOSED FOR THAT AREA. STABILIZE AREA.
BAFFLES:
1. MAINTAIN ACCESS TO BAFFLES. SHOULD THE FABRIC COLLAPSE, DECOMPOSE, TEAR, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
2. REMOVE BUILDUP SEDIMENT WHEN IT REACHES ONE-HALF FULL. TAKE CARE NOT TO DISTURB BAFFLES DURING CLEANOUT.
SILT FENCE:
1. SEDIMENT SHALL BE REMOVED FROM BEHIND THE SEDIMENT FENCE WHEN IT BECOMES ABOUT 0.5 FT DEEP AT THE FENCE. THE FENCE
SHALL BE REPAIRED AS REQUIRED TO MAINTAIN A SUFFICIENT BARRIER.
2. SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, DECOMPOSE, TEAR, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
3. AFTER ALL AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT. GRADE AREA
TO GRADING PLAN OR BLEND WITH ADJACENT GRADES. STABILIZE AREA.
TEMPORARY DIVERSIONS:
1. IMMEDIATELY REMOVE EXCESS SEDIMENT FROM FLOW AREA AND REPAIR DIVERSION RIDGE.
2. CAREFULLY CHECK OUTLETS AND MAKE TIMELY REPAIRS AS NEEDED.
3. AFTER ALL AREAS HAVE BEEN STABILIZED REMOVE THE RIDGE AND THE CHANNEL AND GRADE ACCORDING TO GRADING PLAN OR
BLEND WITH ADJACENT GRADES. STABILIZE AREA.
RIP RAP LINED DITCHES/CHANNELS/OUTLETS:
1. PAY CLOSE ATTENTION TO INLET AND OUTLET SECTIONS WHERE CONCENTRATED FLOW ENTERS.
2. INSPECT FOR INDICATIONS OF PIPING, SCOUR HOLES, OR BANK FAILURES. MAKE REPAIRS IMMEDIATELY.
3. MAINTAIN VEGETATION ADJACENT TO THE ROCK LINING IN A HEALTHY, VIGOROUS CONDITION TO PROTECT THE AREA FROM EROSION
AND SCOUR.
GRASS LINED DITCHES/CHANNELS/SWALES:
1. DURING GRASS ESTABLISHMENT PERIOD, INSPECT AFTER EVERY RAINFALL.
2. AFTER GRASS HAS ESTABLISHED, INSPECT PERIODICALLY AND AFTER HEAVY RAINFALL. IMMEDIATELY MAKE REPAIRS.
3. PAY CLOSE ATTENTION TO INLET AND OUTLET SECTIONS WHERE CONCENTRATED FLOW ENTERS.
4. GRASS SHOULD BE MAINTAINED IN A HEALTHY VIGOROUS CONDITION AT ALL TIMES, SINCE IT IS THE PRIMARY EROSION PROTECTION.
TEMPORARY SEEDING SCHEDULE
WINTER & EARLY SPRING
Seeding mixture
Species Rate (lb/acre)
Rye (grain) 120
Annual lespedeza (Kobe in
Piedmont and Coastal Plain,
Korean in Mountains) 50
Omit annual lespedeza when duration of temporary cover is not to
extend beyond June.
Seeding dates
Mountains —Above 2500 feet: Feb. 15 - May 15
Below 2500 feet: Feb. 1- May 1
Piedmont —Jan. 1 - May 1
Coastal Plain —Dec. 1 -Apr. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 lb/acre ground
agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
immediately following erosion or other damage.
PERMANENT SEEDING SCHEDULE
SOURCE: NCDEQ EROSION CONTROL MANUAL 6.1lb
TEMPORARY SEEDING SCHEDULE
FALL
Seeding mixture
Species Rate (Ib/acre)
Rye (grain) 120
Seeding dates
Mountains —Aug. 15 - Dec. 15
Coastal Plain and Piedmont —Aug. 15 - Dec. 30
Soil amendments
Follow soil tests or apply 2,000 lb/acre ground agricultural limestone
and 1,000 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Repair and refertilize damaged areas immediately. Topdress with 50
lb/acre of nitrogen in March. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 lb/acre Kobe (Piedmont and
Coastal Plain) or Korean (Mountains) lespedeza in late February or
early March.
HERBACEOUS PLANTS -Seeding recommendations for primary stabilization
Successful development depends on planting date (effectiveness goal: 6 mo. - 3 yrs. without an ongoing maintenance program) Table 6.11.b
unu. �uTnic ctecnrc�
Optimal Plantina Dates
Common Name
Botanical Name /
Cufiivar
Hative /
introduced
Broadcast
Seeding
Rates
Ibe/ecre
Fertilization/
limestone
Ibalacre
Mountains
Piedmont
coastal
Plains
Sun/Shade
tolerant
Wetlands
Riparian
Buffers
Invasive
Yes or Ho
Installation / Maintenance
Considerations
Other information, commentary
Sericea Lespedeza
Lespedeza cuneata
Dumont'--_—
1
15 Ibs
B soil test
9/1-6/1
9/1-5/1
10/1-4/1
Sun
NR
NR
Yes
Responds well to controlled
burns -- - --
Severe Threat
—_--
_---
----
Invasive species
---- -
--
--
_--
--
_--
_--
_--
---
-
__.---
----T--
---------------
--------
Crown Vetch
---------
Secu ' era vaNa
----
I
__15 1bs
B so--st--
d te
---'
3/15-4/30
-----
NR
---
NR
----
Sun
NR
NR
Yes
Highly competitive,
Prefers neutral sobs
-"--- " —
(CoroniNa varia)
--
- -
_
_
_
- -
- __-__
not recommended unless-
-
an acceptable aflemative
is not available.
-- ----
---_
-
Centime Grass _.-
Eremochloa o _'urol
_ I
5 lbs_
Boo l test
NR
Eastern _
9/1 - 5/1
Sun_
NR
NR_ -
_ No _
Si nifirant maintenance ____
Does not tole ate high traffic___
10 Ibs. for road shoulders
only
]may
be required to obtain
Acceptable for sodding
desired cover
KY 31 Tall Fescue
Schedonorus phoenil
I
100 Ibs
8 sot test
8/15.511
SMA115
9/30 - 3115
Sun /
NR
NR
Yes
If utilized, it is imperative
Acceptable for sodding
---- --
Fastuca arundinat;
-------- 1 `- - --
- --
—
— —
- --
mod. Shade
-- -- -
— --
--- -
----
that maintenance includes
---
------- — ---- -
a containment plan
- --
- ----
-----------
- - -- ---- -
y-gluW-.—_—
KY Blue Grass
----
Poe tensis
- -
I
----
151bs
------
B sot test
------
8/15511
--
NR
---
NR
----
Sun
---
NR
NR
Yes
If utilized, it is imperative
Prefers neutral soils, highly
-
_-
-------
that maintenance includes _
tom etitive, not recommended
--,.-"---
-------------'
--
----
---`-
--
--
--
------
--
a containment plan
unless an acceptable altemative
-
--
-__----
-_---
--
---------
---------.--.__
Acceptable for soddin ------
Hard Fescue
Pasture txevi ila
Festuca to ilolia
15lbs
1 y soil test
8/1 - 6/1
NR
NR
Shade
NR
NR _
__. No __-
Nat recommended -for _
slopes greater than 5%
Loev growing, bunchgrass __-
-- ----- --
Bermuda Grass
— - -
C nodon dac on
-- --
I
251bs
— ---
B sot last
- - -
NR
----
4115�f3D
----
4/15 8/30
--- ---
Sun
----
NR
-----
NR
---
Ves
---------
If utilized, it is imperative
------ - ------ -._-..
Extreme a ressive, not
that maintenance includes
recommended and should be
--
-
— _
a containmenLp an -
avoided unless an acceptable __
-----
" ---- -
---
-'
-`"-
-- -
— - -
_--
---
alternative Is not available.
May be sodded or sprigged — __
TEMPORARY SEEDING
PROVIDE TEMPORARY SEEDING TO ALL DENUDED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN THE FOLLOWING SCHEDULE:
PERMANENT DITCHES --> IMMEDIATELY (ROCK LINED)
SLOPES 4:1 OR STEEPER --> 7 DAYS
ALL OTHER AREAS --> 14 DAYS
IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8 INCHES.
SEEDBED PREPARATION:
LIME: APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. IF THE SOIL PH IS NOT KNOWN, APPLY AT A RATE OF 1 TO 1 %2 TONS PER
ACRE ON COARSE -TEXTURED SOILS AND 2-3 TONS PER ACRE OF FINE -TEXTURED SOILS. APPLY LIME UNIFORMLY AND INCORPORATE INTO
THE TOP 4-6 INCHES OF SOIL. SOILS WITH PH HIGHER THAN 6 DO NOT NEED LIME.
FERTILIZER: FERTILIZE ACCORDING TO SOIL TEST RECOMMENDATIONS. WHERE SOIL TESTS ARE NOT AVAILABLE, APPLY A 10-10-10 GRADE
FERTILIZER AT 700-1,000 LB/ACRE. INCORPORATE FERTILIZER INTO THE TOP 4-6 INCHES OF SOIL. IF A HYDRAULIC SEEDER IS USED, DO NOT
MIX SEED AND FERTILIZER MORE THAN 30 MINUTES BEFORE APPLICATION.
SURFACE ROUGHENING: IF AREAS TO BE SEEDED BECOME HARDENED, SEALED, OR CRUSTED, LOOSEN IT JUST PRIOR TO SEEDING BY
DISKING, RAKING, HARROWING OR OTHER SUITABLE METHODS. GROOVE OR FURROW SLOPES STEEPER THAN 3:1 ON THE CONTOUR
BEFORE SEEDING.
PLANT SELECTION:
SELECT THE APPROPRIATE SPECIES BASED ON THE PLANTING SEASON.
SEEDING:
APPLY SEED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER. USE SEEDING RATES GIVEN IN TABLES.
BROADCAST SEEDING AND HYDROSEEDING IS ACCEPTABLE ON STEEP SLOPES WHERE EQUIPMENT CANNOT BE DRIVEN. HAND
BROADCASTING IS NOT RECOMMENDED.
SMALL GRAINS SHOULD BE PLANTED NO MORE THAN ONE INCH DEEP AND GRASSES AND LEGUMES ON MORE THAN %2 INCH. BROADCAST
SEED MUST BE COVERED BY RAKING OR CHAIN DRAGGING, AND THEN LIGHTLY FIRMED WITH A ROLLER OR CULTIPACKER. HYDROSEEDED
MIXTURES SHOULD NOT INCLUDE A WOOD FIBER MULCH.
MULCHING:
MULCHING IS REQUIRED FOR ALL TEMPORARY SEEDING AT A MIN RATE OF 2 TONS/ACRE WITH ASPHALT TACK.
MAINTENANCE:
CONTRACTOR TO MONITOR GRASS ESTABLISHMENT. PROMPTLY RESEEED AREAS WHERE A HEALTHY, DENSE GROWTH DOES NOT
ESTABLISH. CONTRACTOR MAY NEED TO PROVIDE NETTING OR TEMPORARY LINERS TO AREAS WHERE GRASS CANNOT BE ESTABLISHED
DUE TO EROSION.
TEMPORARY SEEDING SCHEDULE
SUMMER
Seeding mixture
Species
German millet
Rate (lb/acre)
40
In the Piedmont and Mountains, a small -stemmed Sudangrass may be
substituted at a rate of 50 lb/acre.
Seeding dates
Mountains —May 15 -Aug. 15
Piedmont —May 1 -Aug. 15
Coastal Plain —Apr. 15 -Aug. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 lb/acre ground
agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 Ib/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
immediately following erosion or other damage.
a
a
HERBACEOUS PLANTS -Seeding recommendations for primary stabilization
Successfull development depends on planting date (effectiveness goal: 6 mo. -3 yrs. without an ongoing maintenance program) Table 6.11.c
NATIVE SPFr'IFS
-----------
I®I®
I®II®
-----------
-----------
PERMANENT SEEDING
SEE SEEDING SCHEDULE FOR SEED TYPE AND RATE.
PROVIDE PERMANENT SEEDING TO ALL DENUDED AREAS THAT WILL NOT BE COVERED BY PAVING, BUILDINGS, OR OTHER LANDSCAPING. AREAS
RECEIVING PERMANENT VEGETATION MUST BE STABILIZED WITHIN THE FOLLOWING TIMEFRAMES AFTER FINAL GRADE IS REACHED, UNLESS
TEMPORARY STABILIZATION IS APPLIED.
PERMANENT DITCHES --> IMMEDIATELY (ROCK LINED)
SLOPES 4:1 OR STEEPER --> 7 DAYS
ALL OTHER AREAS --> 14 DAYS
COMPLETE GRADING BEFORE PREPARING SEEDBEDS. IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8
INCHES.
SEEDBED REQUIREMENTS:
THE SOIL SHOULD MEET THE FOLLOWING MINIMUM CRITERIA FOR VEGETATION ESTABLISHMENT:
• ENOUGH FINE-GRAINED (SILT AND CLAY) MATERIAL TO MAINTAIN ADEQUATE MOISTURE AND NUTRIENT SUPPLY (AVAILABLE WATER
CAPACITY OF AT LEAST 0.05 INCHES OF WATER TO 1 INCH OF SOIL
• SUFFICIENT PORE SPACE TO PERMIT ROOT PENETRATION.
• SUFFICIENT DEPTH OF SOIL TO PROVIDE AN ADEQUATE ROOT ZONE. THE DEPTH OF ROCK OR IMPERMEABLE LAYERS SUCH AS
HARDPANS SHOULD BE 12 INCHES OR MORE, EXCEPT ON SLOPES STEEPER THAN 2:1 WHERE THE ADDITION OF SOIL IS NOT FEASIBLE.
• A FAVORABLE PH RANGE FOR PLANT GROWTH, USUALLY 6.0-6.5.
• NO LARGE ROOTS, BRANCHES, STONES, LARGE CLODS OF EARTH, AND TRASH. CLODS AND STONES MAY BE LEFT ON SLOPES
STEEPER THAN 3:1 IF THEY ARE TO BE HYDROSEEDED.
IF THE ABOVE CRITERIA CANNOT BE MET, SPECIAL SOIL CONDITIONERS OR TOPSOIL MAY BE APPLIED.
SEEDBED PREPARATION:
LIME: APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. IF THE SOIL PH IS NOT KNOWN, FOLLOW RATES ON THE SEEDING SPEC
TABLE.
FERTILIZER: FERTILIZE ACCORDING TO SOIL TEST RECOMMENDATIONS. WHERE SOIL TESTS ARE NOT AVAILABLE, FOLLOW RATES ON THE
SEEDING SPEC TABLE.
SURFACE ROUGHENING: IF AREAS TO BE SEEDED BECOME HARDENED, SEALED, OR CRUSTED, LOOSEN IT JUST PRIOR TO SEEDING BY
DISKING, RAKING, HARROWING OR OTHER SUITABLE METHODS. GROOVE OR FURROW SLOPES STEEPER THAN 3:1 ON THE CONTOUR
BEFORE SEEDING.
PLANT SELECTION:
SELECT THE APPROPRIATE SPECIES BASED ON THE PLANTING SEASON, SOIL TYPE, SLOPES, AND LAND USES. SEE SEEDING SPEC TABLES
IN PLANS FOR RECOMMENDED PERMANENT SEEDING MIXTURE.
SEEDING:
USE CERTIFIED SEED (INSPECTED BY THE NORTH CAROLINA CROP IMPROVEMENT ASSOCIATION).
APPLY SEED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER ON A FIRM, FRIABLE SEEDBED. USE SEEDING
RATES GIVEN IN TABLES.
WHEN USING A DRILL OR CULTIPACKER SEEDER, SMALL GRAINS SHOULD BE PLANTED NO MORE THAN ONE INCH DEEP AND GRASSES AND
LEGUMES ON MORE THAN %2 INCH.
WHEN BROADCAST SEEDING, SUBDIVIDE AREA INTO WORKABLE SECTIONS AND DETERMINE THE AMOUNT OF SEED NEEDED FOR EACH
SECTION. APPLY ONE-HALF THE SEED WHILE MOVING BACK AND FORTH ACROSS THE AREA AND APPLY THE REMAINING SEED IN THE SAME
MANNER BUT AT RIGHT ANGLES TO THE FIRST PASS. COVER SEED BY RAKING OR CHAIN DRAGGING, AND THEN LIGHTLY FIRM WITH A
ROLLER OR CULTIPACKER.
MULCH AREAS IMMEDIATELY AFTER SEEDING IN ACCORDANCE WITH RATES GIVEN IN TABLES. ANCHOR MULCH WITH NETTING OR LIQUID
ASPHALT AT A RATE OF 0.10 GALLON PER SQUARE YARD (10 GAL / 1000 SQ FT).
HYDROSEEDING:
SURFACE ROUGHENING IS REQUIRED. FINE SEEDBED PREPARATION IS NOT NECESSARY.
RATE OF WOOD FIBER APPLICATION SHOULD BE AT LEAST 4,000-6,000 LB/ACRE.
APPLY LEGUME INOCULANTS AT FOUR TIMES THE RECOMMENDED RATE WHEN ADDING INOCULANT TO HYDROSEEDER SLURRY.
APPLY LIME IN DRY FORM.
APPLICATION
STEP 1 -1/3 MULCH RATE, ALL SEEDING AND ALL INOCULANT SPREAD IN ONE DIRECTION
STEP 2 - 2/3 MULCH RATE APPLIED IN OPPOSING DIRECTION
MAINTENANCE:
IF STAND IS INADEQUATE, RE-EVALUATE PLANT CHOICE AND QUANTITIES OF LIME AND FERTILIZER. REESTABLISH THE STAND AFTER
SEEDBED PREPARATION OR OVER -SEED THE STAND. CONSIDER SEEDING TEMPORARY, ANNUAL SPECIES IF THE TIME OF YEAR IS NOT
APPROPRIATE FOR PERMANENT SEEDING.
RAFTING AND DESIGN O
SERVICES, INC_
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 6 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021

NOTE:
NCGO1 PERMIT PROVISIONS HAVE BEEN PROVIDED AS GENERAL GUIDE
WITH MINING OPERATIONS DURING THE CONSTRUCTION PORTION OF
THE PROJECT AS A BEST MANAGEMENT PRACTICE.
HOWEVER, MINING OPERATIONS ARE CURRENTLY EXEMPT FROM THESE
REQUIREMENTS UNDER THE NCG02 PERMIT.
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGO1 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization
Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
Temporary Stabilization
Permanent Stabilization
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
• Hydroseeding
• Geatextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4. Provide ponding area for containment of treated Stormwater before discharging
offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
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BELOW GRADE WASHOUT STRUCTURE
CONCRETE WASHOUTS
ABOVE GRADE WASHOUT STRUCTURE
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequency
Inspect
(during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is
order
available, record the cumulative rain measurement for those un-
attended days (and this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded as
"zero." The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC
At least once per
1. Identification of the measures inspected,
Measures
7 calendar days
2. Date and time of the inspection,
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Indication of whether the measures were operating
event> 1.0 inch in
properly,
24 hours
5. Description of maintenance needs forthe measure,
G. Description, evidence, and date of corrective actions taken.
(3) Stormwater
At least once per
1. Identification of the discharge outfalls inspected,
discharge
7 calendar days
2. Date and time of the inspection,
outfalls (SDOs)
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Evidence of indicators of stormwater pollution such as oil
event> 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of visible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
If visible sedimentation is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
hours of a rain
the site limits,
event> 1.0 inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
At least once per
If the stream or wetland has increased visible sedimentation or a
wetlands onsite
7 calendar days
stream has visible increased turbidity from the construction
or offsite
and within 24
activity, then a record of the following shall be made:
(where
hours of a rain
1. Description, evidence and date of corrective actions taken, and
accessible)
event> 1.0 inch in
2. Records of the required reports to the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit
of this permit.
(6) Ground
After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization
of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation thatthe required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be documented in the manner
described:
Item to Document
Documentation Requirements
(a) Each E&SC Measure has been installed
Initial and date each E&SC Measure on a copy
and does not significantly deviate from the
of the approved E&SC Plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC Plan.
E&SC Measure shown on the approved E&SC
Plan. This documentation is required upon the
initial installation of the E&SC Measures or if
the E&SC Measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
Plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
Plan or complete, date and sign an inspection
Plan.
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC Measures
have been performed.
(e) Corrective actions have been taken
Initial and date a copy of the approved E&SC
to E&SC Measures.
Plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation
In addition to the E&SC Plan documents above, the following items shall be kept on the
site
and available for agency inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make this
requirement not practical:
(a) This general permit as well as the certificate of coverage, after it is received.
(b) Records of inspections made during the previous 30 days. The permittee shall record
the required observations on the Inspection Record Form provided by the Division or
a similar inspection form that includes all the required elements. Use of
electronically -available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard -copy records.
(c) All data used to complete the Notice of Intent and older inspection records shall be
maintained for a period of three years after project completion and made available
upon request. [40 CFR 122.41]
EFFECTIVE: 04/01 / 19
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that must be reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(a) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(b) Anticipated bypasses and unanticipated bypasses.
(c) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Division's Emergency Response personnel at [phone], (800)
858-0368 or [phone].
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
• Within 24 hours, an oral or electronic notification.
deposition in a
• Within 7calendar days, a report that contains a description of the
stream or wetland
sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d) list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
with the federal or state impaired -waters conditions.
(b) Oil spills and
• Within 24 hours, an oral or electronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
• A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
effect of the bypass.
(d) Unanticipated
. Within 24 hours, an oral or electronic notification.
bypasses [40 CFR
• Within 7calendar days, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect of the bypass.
(e) Noncompliance
e Within 24 hours, an oral or electronic notification.
with the conditions
• Within 7calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(1)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
I NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING I EFFECTIVE: 04/01/191
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 7 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021
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Construction 1. Clear, grub, and strip the area under the embankment of all vegetation and
root mat. Remove all surface soil containing high amounts of organic matter
Specifications and stockpile or dispose of it properly. Haul all objectionable material to the
designated disposal area. Place temporary sediment control measures below
basin as needed
2. Ensure that fill material for the embankment is free of roots, woody
vegetation, organic matter, and other objectionable material. Place the fill in
lifts not to exceed 9 inches, and machine compact it. Over fill the embankment
6 inches to allow for settlement.
3. Shape the basin to the specified dimensions. Prevent the skimming device
from settling into the mud by excavating a shallow pit under the skimmer or
providing a low support under the skimmer of stone or timber.
4. Place the barrel (typically 4-inch Schedule 40 PVC pipe) on a firm, smooth
foundation of impervious soil. Do not use pervious material such as sand,
gravel, or crushed stone as backfill around the pipe. Place the fill material
around the pipe spillway in 4-inch layers and compact it under and around
the pipe to at least the same density as the adjacent embankment. Care must
be taken not to raise the pipe from the firm contact with its foundation when
compacting under the pipe haunches.
Place a minimum depth of 2 feet of compacted backfill over the pipe spillway
before crossing it with construction equipment. In no case should the pipe
conduit be installed by cutting a trench through the dam after the embankment
is complete.
5. Assemble the skimmer following the manufacturers instructions, or as
designed.
6. Lay the assembled skimmer on the bottom of the basin with the flexible
joint at the inlet of the barrel pipe. Attach the flexible joint to the barrel pipe
and position the skimmer over the excavated pit or support. Be sure to attach
a rope to the skimmer and anchor it to the side of the basin. This will be used
to pull the skimmer to the side for maintenance.
7. Earthen spillways -Install the spillway in undisturbed soil to the greatest
extent possible. The achievement of planned elevations, grade, design width,
and entrance and exit channel slopes are critical to the successful operation
of the spillway. The spillway should be lined with laminated plastic or
impermeable geotextile fabric. The fabric must be wide and long enough to
cover the bottom and sides and extend onto the top of the dam for anchoring
in a trench. The edges may be secured with 8-inch staples or pins. The fabric
must be long enough to extend down the slope and exit onto stable ground.
The width of the fabric must be one piece, not joined or spliced; otherwise
water can get under the fabric. If the length of the fabric is insufficient for the
entire length of the spillway, multiple sections, spanning the complete width,
may be used. The upper section(s) should overlap the lower section(s) so
that water cannot flow under the fabric. Secure the upper edge and sides
of the fabric in a trench with staples or pins. (Adapted from "A Manual for
Designing, Installing and Maintaining Skimmer Sediment Basins." February,
1999. J. W. Faircloth & Son.).
8. Inlets -Discharge water into the basin in a manner to prevent erosion. Use
temporary slope drains or diversions with outlet protection to divert sediment -
laden water to the upper end of the pool area to improve basin trap efficiency
(References: Runq#'Control Measures and Outlet Protection).
6.64.8 Re, 6/06
Practice Standards and Specifications
9. Erosion control -Construct the structure so that the disturbed area is
minimized. Divert surface water away from bare areas. Complete the
embankment before the area is cleared. Stabilize the emergency spillway
embankment and all other disturbed areas above the crest of the principal
spillway immediately after construction (References: Surface Stabilization).
10. Install porous baffles as specified in Practice 6.65, Porous Baj les.
11. After all the sediment -producing areas have been permanently stabilized,
remove the structure and all the unstable sediment. Smooth the area to
blend with the adjoining areas and stabilize properly (References: Surface
Stabilization).
Maintenance Inspect skimmer sediment basins at least weekly and after each significant
(one-half inch or greater) rainfall event and repair immediately. Remove
sediment and restore the basin to its original dimensions when sediment
accumulates to one-half the height of the first baffle. Pull the skimmer to
one side so that the sediment underneath it can be excavated. Excavate the
sediment from the entire basin, not just around the skimmer or the first cell.
Make sure vegetation growing in the bottom of the basin does not hold down
the skimmer.
Repair the bathes if they are damaged. Re -anchor the baffles if water is
flowing underneath or around them.
If the skimmer is clogged with trash and there is water in the basin, usually
jerking on the rope will snake the skimmer bob up and down and dislodge
the debris and restore flow. If this does not work, pull the skimmer over to
the side of the basin and remove the debris. Also check the orifice inside the
skimmer to see if it is clogged; if so remove the debris.
If the skimmer arm or barrel pipe is clogged, the orifice can be removed and
the obstruction cleared with a plumber's snake or by flushing with water. Be
sure and replace the orifice before repositioning the skimmer.
Check the fabric lined spillway for damage and make any required repairs
with fabric that spans the fill width of the spillway. Check the embankment,
spillways, and outlet for erosion damage, and inspect the embankment for
piping and settlement. Make all necessary repairs immediately. Remove all
trash and other debris from the skimmer and pool areas.
Freezing weather can result in ice forming in the basin. Some special
precautions should be taken in the winter to prevent the skimmer from
plugging with ice.
Rev. 6106 6.64.9
SKIMMER/SEDIMENT BASIN
CONSTRUCTION AND MAINTAINCE PROCEDURES
COMPACTED
PERSPECTIVE VIEW
Construction MATERIALS
Specifications 1. Use matting made of 100% coconut fiber (coir) twine woven into high
strength matrix with the properties shown in Table 6.65a.
2. Staples should be made of 0.125 inch diameter new steel wire formed into a
`U' 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 of the basin.
3. Ensure that steel posts for porous baffles are of a sufficient height to support
baffles at desired height. Posts should be approximately 1-3/8" wide measured
parallel to the fence, and have a minimum weight of 1.25 lb/linear ft. The posts
must be equipped with an anchor plate having a minimum area of 14.0 square
inches and be of the self -fastener angle steel type to have a means of retaining
wire and coir fiber mat in the desired position without displacement.
4. Use 9-gauge high tension wire for support wire. Maintenance
Table 6.65a Specifications
for Porous Baffle Material
Coir Fiber Baffle Material Property Requirements
Thickness
0.30 in. minimum
Tensile Strength (Wet)
900 x 680 lb/ft minimum
Elongation et
69% x 34% maximum
Flow Velocity
10-12 ft/sec
Weight
20 oz/SY 680 /m minimum
Minimum Width
6.5 feet
Open Area
50% maximum
Plan View
Inflow
structure
s
�f
Average _ Area*
Width W L
• Area of basin water surface at
top of principal spillway elevation
Inflow
structure
Practice Standards and Specifications
• Dewatering-Allow the mmu num reasonable detention period before the
basin is completely dewateted (at least 48 hours).
• Inflow rate -Reduce the inflow velocity and divert all sediment -flee
runoff.
Baffles
Baffles
f Freeboard
it
•rp6'�.
t
C
a
w
Skimmer
dewgterirlg
deviceEm
°-r 9encY
spillway
b" ruin. i
Embankment
seaimeftr Cross -Section
storage zone
View
Figure 6.64c Example of a sediment basin with a skimmer outlet and emergency spillway. From Pennsylvania
Erosion and Sediment Pollution Control Manual, March, 2000.
Rcir. 5t 13
SKIMMER BASIN
NTS
TOP EL= 48.0
3:1 MAX
NOTES: SLOPES
POND EL= 46.0
_
tiff
_
1. NO SILT FENCE ALLOWED. POROUS COIR FIBER BAFFLE REQUIRED.
-
2. DRIVE STEEL FENCE POST AT LEAST 18" INTO SOLID GROUND
I
-
VOLUME REQUIRED
-
3. WOOD POSTS ARE NOT ACCEPTABLE
I
1800 CF/Q25
4. BAFFLES SPACED A MAXIMUM OF 8' IN FRONT
-_
TWO-THIRDS OF SEDIMENT TRAP (CLOSEST TO RIP -RAP WEIR).
_
I -
>
�3:1 MAX SLOPE (TYP)
3:1 MAX SLOPE (TYP)�
-
I
-
/ BFTMq� ATTACH COIR FIBER BAFFLE
BOA 1 0
7 AOS TO HOG WIRE USING WIRE
ELI
1�:
SF�
i
1
TOP OF BAFFLE SHOULD BE 6"
I_
THAN HE BOTTOM OF
/y THIGHER
HE SPILLWAY
HOG WIRE ATTACHED J
TO POSTS WITH LENGTHS
OF WIRE
BAFFLE INSTALLATION
7. Extend 9 gauge minimum high tension wire strand to side of basin or install
steel T-posts to anchor baffle to side of basin and secure to vertical end posts as
shown in Figure 6.65b.
8. Drape the coin fiber mat over the wire strand mounted at a height of 6 inches
above the spillway elevation. Secure the coir fiber mat to the wire strand with
plastic ties or wire fasteners. Anchor the matting to the sides and floor of the
basin with 12 inch wire staples, approximately 1 ft apart, along the bottom and
side slopes of the basin.
9. Do not splice the fabric, but use a continuous piece across the basin
10. Adjustments may be required in the stapling requirements to fit individual
site conditions.
Inspect baffles at least once a week and after each rainfall. Make any required
repairs immediately.
Be sure to maintain access to the baffles. Should the fabric of a baffle collapse,
tear, decompose, or become ineffective, replace it promptly.
Remove sediment deposits when it reaches half full, to provide adequate
storage volume for the next rain and to reduce pressure on the baffles.
Take care to avoid damaging the baffles during cleanout, and replace if damaged
during cleanout operations. Sediment depth should never exceed half the
designed storage depth.
After the contributing drainage area has been properly stabilized, remove all
CONSTRUCTION baffle materials and unstable sediment deposits, bring the area to grade, and
1. Grade the basin so that the bottom is level front to back and side to side. atah;h­ ;t
2. Install the coir fiber baffles immediately upon excavation of the basins.
3. Install posts across the width of the sediment trap (Practice 6.62, Sediment
Fence).
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 minimum of 2 inches lower
than the top of the earthen embankment.
5. Install at least three rows of baffles between the inlet and outlet discharge
point. Basins less than 20 feet in length may use 2 baffles.
6. Attach a 9 gauge high tension wire strand to the steel posts at a height of 6
inches above the spillway elevation with plastic ties or wire fasteners to prevent
sagging. If the temporary sediment basin will be converted to a permanent
stormwater basin of a greater depth, the baffle height should be based on the pool
depth during use as a temporary sediment basin.
TEMPORARY BASIN BAFFLES
NTS
PVC END CAP
F
SEDIMENT BASIN #1 NO OUTLET
NTS
I ur- V ICVV
PV(` ELBOW
0
END CAP
"C" ENCLOSURE
TER ENTRY UNIT
PVC VENT PIPE
SCHEDULE 40 PVC PIPE
(SEE PLAN FOR DIA.)
;IN SCHEDULE 40 PVC PIPE
fE (SEE PLAN FOR DIA.)
FLEXIBLE HOSE
\ ORIFICE PLATE
(SEE PLAN FOR DIA.)
PVC TEE
FRONT VIEW
SKIMMER DEWATERING DEVICE
NTS
3:1 MAX
SLOPES
FLOW -
i
BERM
EMBANKMENT EMBANKMENT
NOTE:
NEITHER THE LOCATION NOR
ALIGNMENT OF THE CONTROL
SECTION HAS TO COINCIDE
PLAN WITH THE CENTERLINE OF THE
DAM.
MINA
APPROACH
CHANNEL
WATER
SURFACE
BERM
- -
CONTROL SECTION
\ EXIT SECTOR
\ / SEE PLANS FOR LINER LENGTH
fi I-
20' f S L
LEVEL OR
GREATER 100'
PROFILE ALONG CENTERLINE
CROSS SECTION AT CONTROL SECTION
TYPICAL EXCAVATED EARTH SPILLWAY
NTS
Construction 1. Ensure that the subgrade for the filter and riprap follows the required lines
and grades shown in the plan. Compact any fill required in the subgrade to the
Specifications density o£ the surrounding undisturbed material. Low areas in the subgrade on
undisturbed soil may also be filled by increasing the riprap thickness.
2. The riprap and gravel filter must conform to the specified grading limits
shown on the plans.
3. Filter cloth, when used, must meet design requirements and be properly
protected from punching or tearing during installation. Repair any damage by
removing the riprap and placing another piece of filter cloth over the damaged
area. All connecting joints should overlap so the top layer is above the
downstream layer a minimum of 1 foot. If the damage is extensive, replace
the entire filter cloth.
4. Riprap maybe placed by equipment, but take care to avoid damaging the
filter.
5. The minimum thickness of the riprap should be 1.5 times the maximum
stone diameter.
6. Riprap may be field stone or rough quarry stone. It should be hard,
angular, highly weather -resistant and well graded.
7. Construct the apron on zero grade with no overfill at the end. Make the
top of the riprap at the downstream end level with the receiving area or slightly
below it.
8. Ensure that the apron is properly aligned with the receiving stream
and preferably straight throughout its length. If a curve is needed to fit site
Q La conditions, place it in the upper section of the apron.
9. Imm ediately after c onstruction, stabilize all disturbed areas with v egetation
(Practices 6. 10, Temporary Seeding, and 6.11, Permanent Seeding).
aq �. I ll l� 'ka�
II
Section AA c W
Ijllf=�lilll , =1i _,.'ilq�NH� Maintenance Inspect riprap outlet structures weekly and after significant (1 /2 inch or greater)
Fi Iter rainfall events to see if any erosion around or below the riprap has taken place,
blanket or if stones have been dislodged. Immediately make all needed repairs to
Figure 6.41c Riprap outlet protection (modified from Va SWCCf prevent further damage.
References Sur face Stabilization
6. 10, Temporary Seeding
6.41.4 6.11, Permanent Seeding
6.15, Riprap
Appendix
8.06, Design of Riprap Outlet Protection
Rice, C.E., Kadavy, K.0 "Riprap Design for Pipe Spillways at
-1 <TW/D <0.7" Presented at the December 13, 1994International Winter
Meeting, American Society of Agricultural Engineers, Paper Number
942541.
Rice, C.E. and K.C. Kadavy. 1994, Plunge Pool Design at Submerged Pipe
Spillway Outlets. Transactions of the ASAE 37(4):1167-1173.
FHWA. 1983. Hydralic Design of Energy Dissipaters for Culverts and
Channels. Hydraulic Engineering Circular Number 14.
OUTLET PROTECTION
&64.7
LEVEL PORTION CONTROL SECTION
APPROACH
CHANNEL /
FREEBOARD (V MIN)
SPILLWAY INVERT ELEV -
EXTEND LINER 1' BELOW
BOTTOM ELEV.
Notes
1. La is the length of the riprap
apron.
•
2. d =1.5 times the maximum
stone diameter but not less
than 6".
Pipe Outlet to Flat Area-
3. In a well-defined channel ex -
No Well-defined Channel
tend the apron up the channel
banks to an elevation of 6"
above the maximum tailwater
depth or to the top of the bank,
ado A - A
whichever is less.
d
4. A filter blanket or filter fabric
should be installed between
the riprap and soil foundation.
Pipe Outlet to Well-defined
Channel
NTS
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 8 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021

Construction
1. Clear the foundation area of trees, stumps, roots, loose rock, and other
objectionable material.
Specifications
2. Excavate the cross section to the lines and grades of the foundation of the
liner as shown on the plans. Bring over -excavated areas to grade by increasing
the thickness of the liner or by back -filling with moist soil compacted to the
density of the surrounding material.
3. Concrete linings:
• Place concrete linings to the thickness shown on the plans and finish them
in a workmanlike manner.
• Take adequate precautions to protect freshly placed concrete from extreme
temperatures to ensure proper curing.
• Ensure that subgrade is moist when concrete is poured.
• Install foundation drains or weep holes where needed to protect against
uplift and piping.
• Provide transverse (contraction)joints to control cracking at approximately
20-feet intervals. These joints may be formed by using a 1/2-inch thick
removable template or by sawing to a depth of at least 1 inch.
• Install expansion joints at intervals not to exceed 100 feet.
4. Rock riprap linings: Practice 6.15, Riprap.
5. Place filters, beddings, and foundation drains to line and grade in the
manner specified. Place filter and bedding materials immediately after slope
preparation. For synthetic filter fabrics, overlap the downstream edge by at
least 12 inches with the upstream edge which is buried a minimum 12 inches
in a trench. See figure 6.14a, page 6.14.6. Space anchor pins every 3 feet
along the overlap. Spread granular materials in a uniform layer. When more
than one gradation is required, spread the lavers so there is minimal mixing.
Filter material should consist of at least 3 inches of material on all sides of
the drain pipe. The drain pipe conduit should be a minimum of 4 inches in
diameter. Acceptable materials include perforated, continuous, closed joint
conduits of clay, concrete, metal, plastic, or other suitable material (Practice
6.81, Subsurface Drain).
6. Perform all channel construction to keep erosion and water pollution
to a minimum. Immediately upon completion of the channel, vegetate all
disturbed areas or otherwise protect them against soil erosion. Where channel
construction will take longer than 30 days, stabilize channels by reaches.
Maintenance
Inspect channels at regular intervals as well as after major rains, and make
repairs promptly. Give special attention to the outlet and inlet sections and
other points where concentrated flow enters. Carefully check stability at road
crossings, and look for indications of piping, scour holes, or bank failures.
Make repairs immediately. Maintain all vegetation adjacent to the channel in
a healthy, vigorous condition to protect the area from erosion and scour during
out -of -bank flow.
W
2/3 W
___ III=11111=
ill=III—II-1 d o
—II; II.- "
18 Ii111=III ESQ o Q•• Q III II II 4" to 12"
"Ti: IIIII�I:"- FILTER FABRIC OR
GRAVEL BEDDING
PARABOLIC -SHAPED WATERWAY WITH STONE CENTER DRAIN
RIP RAP LINED TEMPORARY/PERMANENT
DIVERSION DITCH
NTS
Figure 6.17e Channel Installation and Slope Installation; Washington State Ecology Department
Longitudinal anchor
trench
Stake at T-5' L
intervals
ra
Initial channel
anchor trench
lei
Terminal slope and
channel anchor trench
Intermittent
check slot
NOTE:
1. Check slots to be constructed per manufacturers specifications.
2. Staking or stapling layout per manufacturers specifications,
Slope surface shall be smooth before If there is a berm at the top of
placement for proper soil contact. slope, anchor upslope of the berm.
2„ -� ' ;-. ;,< :_ -, •a .
Stapling pattern as Min. Min. . �'" Anchor in 6"x6" min. Trench
per manufacturers overlap , and staple at 12" intervals.
recommendations.
.' Min. 6" overlap.
, /
Staple overlaps
max. 5" spacing.
Bring material down to a level area,
Do not stretch blankets/matting tight -allow turn the end under 4" and staple at 12"
the rolls to conform to any irregularities. intervals.
For slopes less than 3H:1V, rolls Lime, fertilize, and seed before installation. Planting
may be placed in horizontal strips. of shrubs, trees, etc. should occur after installation.
(SHAPED BY BULLDOZER)
IM
••'�.• �t.� •fig -
(SHAPED BY MOTOR GRADER)
Construction 1. Remove all trees, brush, stumps, and other objectionable material from the
foundation area, and dispose of properly.
Specifications
2. Excavate the channel, and shape it to neat lines and dimensions shown on
the plans plus a 0.2-foot overcut around the channel perimeter to allow for
bulking during seedbed preparations and sod buildup.
3. Remove and properly dispose of all excess soil so that surface water may
enter the channel freely.
4. The procedure used to establish grass in the channel will depend upon the
severity of the conditions and selection of species. Protect the channel with
mulch or a temporary liner sufficient to withstand anticipated velocities during
the establishment period (Appendix 8.05).
Maintenance During the establishment period, check grass -lined channels after every rainfall.
After grass is established, periodically check the channel; check it after every
heavy rainfall event. Immediately make repairs. It is particularly important to
check the channel outlet and all road crossings for bank stability and evidence
of piping or scour holes. Remove all significant sediment accumulations to
maintain the designed carrying capacity. Keep the grass in a healthy, vigorous
condition at all times, since it is the primary erosion protection for the channel
(Practice 6.11, Permanent Seeding).
GRASS LINED TEMPORARY/PERMANENT
DIVERSION DITCH
NTS
Figure 6.17d Temporary Channel Liners; Washington State Department of Ecology
Overlap 6' min.
Overcut channel 2" to allow buWng
during seedbed preparation ¢
Intermittent check slot
Shingle -lap spliced ends or begin new
roll in an intermittent check slot
Prepare soil and apply seed
installing blankets, mats or
temporary channel liner s)
Excavate channel to design
grade and cross-section �ta
b
Design depth jo
-`
�l . Longitudinal
anchor trench
Typical installation
with erosion control
blankets or turf
reinforcement mats
Longitudinal anchor trench
NOTES:
1. Design velocities exceeding 2 ft/sec require temporary blankets, mats or similar liners to protect
seed and soil until vegetation becomes established.
2. Grass -lined channels with design velocities exceeding 6 ft/sec should include turf reinforcement
mats
TEMPORARY LINING FOR
TEMPORARY/PERMANENT DIVERSION DITCH
NTS
Construction Construction
Specifications Even if properly designed, if not properly installed, RECP's will probably
not function as desired. Proper installation is imperative. Even if properly
installed, if not properly timed and nourished, vegetation will probably not
grow as desired. Proper seed/vegetation selection is also imperative.
Grade the surface of installation areas so that the ground is smooth and loose.
When seeding prior to installation, follow the steps for seed bed preparation,
soil amendments, and seeding in Surface Stabilization, 6.1. All gullies, rills,
and any other disturbed areas must be fine graded prior to installation. Spread
seed before RECP installation. (Important: Remove all large rocks, dirt clods,
stumps, roots, grass clumps, trash, and other obstructions from the soil surface
to allow for direct contact between the soil surface and the RECP.)
Terminal anchor trenches are required at RECP ends and intermittent trenches
must be constructed across channels at 25-foot intervals. Terminal anchor
trenches should be a minimum of 12 inches in depth and 6 inches in width,
while intermittent trenches need be only 6 inches deep and 6 inches wide.
Installation for Slopes— Place the RECP 2-3 feet over the top of the slope
and into an excavated end trench measuring approximately 12 inches deep
by 6 inches wide. Pin the RECP at 1 foot intervals along the bottom of the
trench, backfill, and compact. Unroll the RECP down (or along) the slope
maintaining direct contact between the soil and the RECP Overlap adjacent
rolls a minimum of 3 inches. Pin the RECP to the ground using staples or
pins in a 3 foot center -to -center pattern. Less frequent stapling/pinning is
acceptable on moderate slopes.
Installation in Channels-- Excavate terminal trenches (12 inches deep and 6
inches wide) across the channel at the upper and lower end of the lined channel
sections. At 25-foot intervals along the channel, anchor the RECP across the
channel either in 6 inch by 6 inch trenches or by installing two closely spaced
rows of anchors. Excavate longitudinal trenches 6 inches deep and wide along
channel edges (above water line) in which to bury the outside RECP edges.
Place the first RECP at the downstream end of the channel. Place the end of
the first RECP in the terminal trench and pin it at 1 foot intervals along the
bottom of the trench.
Note: The RECP should be placed upside down in the trench with the roll on
the downstream side of the bench.
Once pinned and back -filled, the RECP is deployed by wrapping over the
top of the trench and unrolling upstream. If the channel is wider than the
provided rolls, place ends of adjacent rolls in the terminal trench, overlapping
the adjacent rolls a minimum of 3 inches. Pin at 1 foot intervals, back -fill, and
compact. Unroll the RECP in the upstream direction until reaching the first
intermittent trench. Fold the RECP back over itself, positioning the roll on
the downstream side of the trench, and allowing the mat to conform to the
trench.
Then pin the RECP (two layers) to the bottom of the trench, backfill, and
compact. Continue up the channel (wrapping over the top of the intermittent
trench) repeating this step at other intermittent trenches, until reaching the
upper terminal trench.
At the upper terminal trench, allow the RECP to conform to the trench,
secure with pins or staples, backfill, compact and then bring the mat back
over the top of the trench and onto the existing mat (2 to 3 feet overlap in the
downstream direction), and pin at I foot intervals across the RECP. When
starting installation of a new roll, begin in a trench or shingle -lap ends of rolls
a minimum of I foot with upstream RECP on top to prevent uplifting. Place
the outside edges of the RECP(s) in longitudinal trenches, pin, back -fill, and
compact,
Anchoring Devices —I I gauge, at least 6 inches length by 1 inch width staples
or 12 inch minimum length wooden stakes are recommended for anchoring the
RECP to the ground.
Drive staples or pins so that the top of the staple or pin is flush with the ground
surface. Anchor each RECP every 3 feet along its center. Longitudinal
overlaps must be sufficient to accommodate a row of anchors and uniform
along the entire length of overlap and anchored every- 3 feet along the overlap
length. Roll ends may be spliced by overlapping 1 foot (in the direction of
water flow), `with the upstream/upslope mat placed on top of the downstream/
downslope RECP. This overlap should be anchored at 1 foot spacing across
the RECP When installing multiple width mats heat seamed in the factory, all
factory seams and field overlaps should be similarly anchored.
PERMANENT DIVERSION BERM
NTS
TEMPORARY/PERMANENT DIVERSION DITCH
NTS
• BOTTOM INSIDE DIMENSIONS12 FT W X 26 FT L
• BOTTOM INSIDE LENGTHS: 26 FT
• BOTTOM INSIDE WIDTHS: 12 FT
• COLOR: BLACK
• DIMENSIONS: 12 FT W X 26 FT L
• HEIGHT: 12 IN
• INCLUDE: SL BRACKET
• INCLUDES WELLHEAD HOOD: NO
• INDOOR/OUTDOOR USE: INDOOR, OUTDOOR
• LENGTH: 26 FT
•MANUFACTURER WARRANTY: 1YR
• MATERIAL: POLYETHYLENE
• MATERIAL THICKNESS: 40 MIL
• RECYCLED CONTENT (%): NO RECYCLED CONTENT
SHAPE: RECTANGLE
• SIDEWALL SUPPORT MATERIAL: ALUMINUM
• SIDEWALL TYPE: L BRACKET
• PRODUCT TYPE: CONTAINMENT BERM
• SPILL CAPACITY, GAL.: 2,333 GAL
• STANDARDS: EPA 40 CFR 264.175, SPCC, UFC, NPDES
• SUPPORTS: EPA COMPLIANCE40 CFR 264.175
• SUPPORTS: NPDES COMPLIANCEYES
• SUPPORTS: SPCC COMPLIANCEYES
• WIDTH: 12 FT
INSTALLATION AND MAINTENANCE
1. INSTALL THE SECONDARY CONTAINMENT UNDER FUEL TANK PER MANUFACTURE
RECOMMENDATIONS.
2. THE CONTAINMENT UNIT SHALL BE INSPECTED WEEKLY FOR ANY SPILLS OR LEAKAGE.
3. IF ANY LEAKAGE OCCURS THEN CORRECTIVE ACTION SHALL BE TAKEN TO FIX.
4. ANY LIQUIDS WITHIN THE SECONDARY CONTAINMENT SHALL BE PUMPED OUT AND
DISPOSED OF OFFSITE PER STATE AND FEDERAL DISPOSAL REQUIREMENTS.
5. RAIN WATER SHALL BE REMOVED AND DISPOSED OF ONCE WATER ELEVATION REACHES 1/2
OF THE CONTAINMENT TOTAL HEIGHT.
FUEL STORAGE SECONDARY CONTAINMENT
NTS
______________
Capacity --­L Gallons ------
Heads Primary 7 Gnuge
-------------
Paint Ext, Red Priner
-------------------
Stanwade Metal Products, Inc,
6868 State Route 305 PO Box 10
Design ---- AG Doublewall-_----_
9
Shell Primary 7 Gnuge
y--------------
Paint Int,
Hartford, Ohb 44424
___________________
Phone- 900-826-5243 Fax, 1-330-772-3307
Code _______ ul. I42-----_-_
Heads Secondary 7 Ge„ge__
www.tankstorezon
Weight 3,7DD lbs.
Ero t
9 Empty ---------------
Test Pres. ______s PSI
Shell Secondary Gauge
Tank For Stationary Use Only
__Io
Rev,# Dater
902
Bracket
T
33'
4' 2' 4'
6'EV
noenlne
Flanged
6'EV
Dpening P•
2' Monitor Pipe
(Male NPT)
Y /
-d 6' 1I 3.J r-16, — 144• I
Customer:_____________________ Drg, Date: ______________ Drawing Approved Byi
Quoted Lead Times Begin Upon Receipt of signed Approved
Drawing, Which Must be Returned Before Production Can Begin,
FUEL STORAGE (2,000 GAL)
NTS
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford,
North Carolina
27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY
30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
Drawn by:
NTS
MTB
Sheet:
Designed by:
MTB
C9
of 13
Reviewed by:
MTB
Project Number:
Date:
DDS JOB #: 2021-07
MAY 2021
f
n

WARNING
SIGN
WIRE CLIPS
V MAX WIRE SPACING
6' METAL "T" POST
4.5' MIN HEIGHT
ABOVE GROUND
1.5' MIN DEPTH
BELOW GROUND
TYPICAL FENCE SPACING CORNER BRACING
10' MAX SPACING 5'-10" MAX SPACING
4.5' MIN HEIGHT
STAPLE WIRE TWIST ABOVE GROUND
1" MIN FENCE STAPLE
STAPLE WIRE
1" MIN FENCE STAPLE
1.5' MIN DEPTH
BELOW GROUND
STAPLE WIRE TWIST
1" MIN FENCE STAPLE
ELEVATION VIEW
CORNER BRACING
5-10" MAX SPACING
CORNER BRACE
6' x 4" MIN TREATED POST
CORNER POST
�15.5 GA BARBED WIRE
GROUND (TYP)
15.5 GA BARBED WIRE
U METAL "T" POST
x 4" MIN TREATED POST
NAIL BRACE TO POST
USE 30 PENNY NAIL MIN (4)
NOTCH POST 1" MIN FOR CORNER BRACE
15.5 GA BARBED/ 12.5 GA HIGH TENSILE WIRE TWIST
x 1" x 1" WOOD STICK
INSTALLATION: POST TO BE DRIVEN OR BORED AND TAM
NOTE: USE ONE SECTION OF CORNER BRACING
AT GATES AND FENCE ENDS
TYPICAL CORNER/BEND
4 STRAND BARBED WIRE FENCE
NTS
EX
c
2:1 MAX SIDE SLOPES (TYP)
SILTFENCE (TYP)
SF SF SF SF SF SF SF SF SF
F_
U_
W
I Cn
2 FT SAFETY BERM (TYP)
TOPSOIL STOCKPILE (TYP)
I _n
U)
::IS ::IS ::IS JS ::IS JS JS ::IS ::IS
STABLIZE AND SEED ALL SLOPES PER NCDEQ STANDARDS
FOR TIME FRAMES FOR DENUDED SLOPES
INSTALL SILT FENCE PER SILT FENCE DETAIL
TOPSOIL SHALL BE PLACED WITH 3:1 MAX SLOPES
ALL SLOPES SHALL BE STABILIZED AND PERMANENTLY SEEDED AT 10 FT HEIGHT
STOCKPILE AREA (TYP)
INSTALLATION
1. REMOVE ALL
4
BERM TREES,BRUSH
4
EXISTING GROUND EXIST/AIG GROUND
NOTE
1. SEE PLAN SHEET C-2 FOR WIDTH
HEIGHT DETERMINED BY SIDE SLOPES.
2. WIDTH INDICATED ON PLAN IS BOTTOM
WIDTH.
3. SEED PER TEMPORARY/PERMANENT
SEEDING SCHEDULE ON SHEET C-7.
4. NATURAL VOLUNTEER VEGETATION
SHALL REMAIN.
5. BERM ENDS SHALL BE 4:1 SLOPES LIKE
SIDE SLOPES.
VEGETATIVE BERM (TYP)
NTS
TS
FILTER FABRIC
NLIr-M
FABRIC
NOTES:
A) MINIMUM WIDTH OF CONSTRUCTION ENTRANCE PAD SHALL BE 20 FT
B) STONE SHALL BE 2-3" WASHED STONE, 12" THICK.
C) THE ENTRANCE SHALL BE MAINTAINED TO PREVENT TRACKING OR FLOW-
ING OF SEDIMENT ONTO PUBLIC RIGHTS -OF -WAY. THIS MAY REQUIRE
PERIODIC TOP DRESSING WITH ADDITIONAL STONE AND REPAIR AND/OR
CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT.
D) INSTALL PADS WHERE SHOWN ON PLANS OR OTHERWISE DIRECTED
BY ENGINEER.
CONSTRUCTION ENTRANCE PAD
NTS
A 15 1 „� Y SECTION A -A
=R BRACE
AN TREATED POST
ER POST
STEEL FENCE POST
WIRE FENCE
HARDWARE CLOTH -
FILTER OF 1 INCH DIAMETER #
57 WASHED STONE
Ri FLOW DIRECTION °<
SIDE VIEW
FILTER OF 1 INCH DIAMETER # 57
WASHED STONE
NOTE:
SILT FENCE FABRIC TO OVERLAP
HARDWARE CLOTH BY 12 INCHES
18"
GRADE
I
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SILT FENCE
FABRIC
GRADE
Installation: Refer to the approved erosion control plan for location, extent, and
specifications. If silt fence is not installed correctly the first time, it will have to
be reconstructed. Determine the exact location of the outlet before completing
installation of the silt fence, taking into consideration:
1. Installation at the lowest point(s) in the fence where water will pond.
2. Maximum allowable drainage area restriction for silt fence.
3. Installation where the outlet is accessible for installation, maintenance and
removal.
4. Placement of the outlet so that water flowing through it will not create an
erosion hazard below - avoid steep slopes below the outlet and areas
without protective vegetation. Use slope drains if necessary.
The silt fence outlet shall be installed in accordance with the standard detail, and
the approved erosion control plan.
S�QQE
#57 STONE MP* GGRpNO
2.0% MIN SLOPE �\S��N
( OPE 4.0% MAX SLOPE N
g \\\JG C'RO0ND S�1=i-'i-
- - S4QAF
TEMPORARY INTERNAL SITE ROAD
NTS
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SILT FENCE FABRIC
ON WIRE FENCE
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HARDWARE CLOTH STEEL FENCE POST
ON WIRE FENCE
PLAN VIEW NOTE:
USE SILT FENCE OUTLETS ONLY WHEN
DRAINAGE AREA DOES NOT EXCEED 1/4 ACRE
AND THERE IS A LOW AREA. USE AS A REPAIR
OF SILT FENCE FAILURES.
STEEL FENCE POST SET
HARDWARE CLOTH MAXIMUM 2 FEET APART WIRE FENCE
............ ............................ ...........
........... ........................... ...........
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SILT FENCE OUTLET
NTS
SEDIMENT FENCE INSTALLATION USING THE SLICING METHOD
Instead of excavating a trench, placing fabric and then backfilling trench,
sediment fence may be installed using specially designed equipment that
inserts the fabric into a cut sliced in the ground with a disc (Figure 6.62b).
Installation
'-The base of both end posts should be at least one foot higher than the
Specifications
middle of the fence. Check with a level if necessary.
2. Install posts 4 feet apart in critical areas and 6 feet apart on standard
applications.
3. Install posts 2 feet deep on the downstream side of the silt fence, and
as close as possible to the fabric, enabling posts to support the fabric from MIN. 10 GA.
upstream water pressure. LINE WIRES
4. Install posts with the nipples facing away from the silt fabric.
5. Attach the fabric to each post with three ties, all spaced within the top 8
inches of the fabric. Attach each tie diagonally 45 degrees through the fabric,
with each puncture at least 1 inch vertically apart. Also, each tie should be
positioned to hang on a post nipple when tightened to prevent sagging. I, ;IIII, ,,1
6. Wrap approximately 6 inches of fabric around the end posts and secure
with 3 ties.
7. No more than 24 inches of a 36 inch fabric is allowed above ground
level.
8. The installation should be checked and corrected for any deviations before
compaction.
24" MAX
AT CENTER
9. Compaction is vitally important for effective results. Compact the soil
immediately next to the silt fence fabric with the front wheel of the tractor,
skid steer, or roller exerting at least 60 pounds per square inch. Compact the
upstream side first, and then each side twice for a total of 4 trips.
NTS A L B
Construction 1. Place stone to the lines and dimensions shown in the plan on a filler fabric
foimdatinn' L = THE DISTANCE SUCH THAT POINTS
Specifications
2. Keep the center stone section at least 9 inches below natural ground level A AND B ARE OF EQUAL ELEVATION
where the dam abuts the channel banks. Maintenance Insped check dams and channels at least weekly and after each significant (1/2
3. Extend stone at least 1.5 feet beyond the ditch bank (Figure 6.83b) to keep inch or greater) rainfall event and repair immediately. Clean out sediment,
water from cutting around the ends of the check dam. straw, limbs, or other debris that could clog the channel when needed.
4. Set spacing between darns to assure that the elevation at the top of the Anticipate submergence and deposition above the check dam and erosion from
lower dam is the same as the toe elevation of the upper dam. high lows around the edges of the dam. Correct all damage immediately. If
significant erosion occurs between dams, additional measures can be taken
5. Protect the channel after the lowest check dam from heavy flow that could such as, installing a protective nprap liner in that portion of the channel
cause erosion. (Practice 6.31, Ripra7rline and Paved Channels).
6. Make sure that the channel reach above the most upstream dam is stable. Remove sediment accumulated behind the dams as needed to prevent daunage
to channel vegetation, allow the channel to drain through the stone check dawn,
7. Ensure that other areas of the channel. such as culvert entrances below the and prevent large flows from carrying sediment aver the dam. Add stones to
check dams, are not subieet to damage or blockage from displaced stones. dawns as needed to maintain design height and cross section.
CHECK DAM
NTS
DISCHARGE LINE
FROM PUMP
SEDIMENT FILTER BAG
(BAG SIZE BASED ON MANUFACTURER'S RECOMMENDATIONS)
LAY ON 6-12" THICK BED OF 2"-3" DIA. STONE
STONE BEL
SEDIMENT FILTER BAG
NTS
8' MAX.
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FRONT VIEW
Maintenance Inspect sediment fences at least once a week and after each rainfall. Make any NOTE:
required repairs immediately. DOES NOT EXCEED 1/4 ACRE AND NEVER IN
AREAS OF CONCENTRATED FLOW
Should the fabric of a sediment fence collapse, tear, decompose or become -USE SILT FENCE ONLY WHEN DRAINAGE AREA
ineffective, replace It promptly. -END OF SILT FENCE NEEDS TO BE TURNED UPHILL.
Remove sediment deposits as necessary to provide adequate storage volume M
for the next rain and to reduce pressure on the fence. Take care to avoid
undermining the fence during cleanout.
Remove all fencing materials and unstable sediment deposits and bring the I�
area to grade and stabilize it after the contributing drainage area has been
properly stabilized. o
SECTION VIEW N
SILT FENCE
NTS
MIN. 12-1/2 GA.
INTERMEDIATE
WIRES
ICI I� GRADE
:III=III=
STEEL POST
- WOVEN WIRE FABRIC
SILT FENCE GEOTEXTILE FABRIC
= UPSLOPE
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BACKFILL TRENCH
OVER SILT FENCE
FOR REPAIR OF SILT
FENCE FAILURES, USE
No. 57 WASHED STONE.
FOR ANCHOR WHEN SIL"
FENCE IS PROTECTING
CATCH BASIN.
0 RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 10 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021
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Temporary Diversion/Berm # 1 => DA # 101
Temporary Diversion/Berm # 3 => DA # 103
Temporary Diversion/Berm # 5 => DA # 105
Calculate Flow - Rational Method
Calculate Flow - Rational Method
Calculate Flow - Rational Method
25-YrStorm
25-YrStorm
25-YrStorm
Q2s = CIA C= 0.30
Qzs = CIA C= 0.30
Q25 = CIA C= 0.30
1= 10.80 in/hr
1= 10.80 in/hr
1= 10.80 in/hr
Q25 = 1.94 A= 0.60 ac
Q25 = 17.82 A= 5.50 ac
Q25 = 9.40 A= 2.90 ac
Channel Slope= 3.00
Channel Slope= 3.00
Channel Slope= 2.00
Channel Depth= 2.00
Channel Depth= 2.00
Channel Depth= 2.00
Bottom width= 0.00
Bottom width= 0.00
Bottom width= 0.00
Side Slopes= 3.00
Side Slopes= 3.00
Side Slopes= 3.00
Velocity= 4.08
Velocity= 6.76
Velocity= 4.94
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10%
Channel Lining
Channel Lining
Channel Lining
Shear Calculation
Shear Calculation
Shear Calculation
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
dwate 0.4 ft
dwater 92 ft
d,Nd1ef 0.78 ft
T= 0.7488 Ibs/ft2 s= 0.03 ft/ft
T= 1.72224 Ibs/ft2 s= 03 ft/ft
T= 0.97344 Ibs/ft2 s= 0.02 ft/ft
Temporary= Straw w/ netting
Temporary= NAG P300 Ve
Temporary= Straw w/nettin
Permanent= Bermudagrass
Permanent= Bermudagrass
Permanent= Bermudagrass
Temporary Diversion/Berm # => DA #
Temporary Diversion/Berm # => DA # L 104
Temporary Diversion/Berm # � => DA # L 106
Calculate Flow - Rational Method
Calculate Flow - Rational Method
Calculate Flow - Rational Method
25-YrStorm
25-YrStorm
25-YrStorm
Q25 = CIA C= 0.30
Q25 = CIA C= 0.30
Q25 = CIA C= 0.30
1= 10.80 in/hr
1= 10.80 in/hr
1= 10.80 in/hr
Q25 = 39.53 A= 12.20 ac
Q25 = 6.80 A= 2.10 ac
Q25 = 4.54 A= 1.40 ac
Channel Slope= 1.00
Channel Slope= 1.00
Channel Slope= 3.00
Channel Depth= 2.00
Channel Depth= 2.00
Channel Depth= 2.00
Bottom width= 0.00
Bottom width= 0.00
Bottom width= 0.00
Side Slopes= 3.00
Side Slopes= 3.00
Side Slopes= 3.00
Velocity= 8.80
Velocity= 3.48
Velocity= 4.72
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10% J1
Channel Lining
Channel Lining
Channel Lining
Shear Calculation
Shear Calculation
Shear Calculation
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
d_t 1.39 ft
dwater- ft
dwate �0.55 ft
T= 2.60208 Ibs/ft2 s= 0.03 ft/ft
T= 0.49296 Ibs/ft2 s=Wft/ft
T= 1.0296 Ibs/ft2 s= 0.03 ft/ft
Temporary= NAG P300 Veg
Temporary= Straw w/nettin
Temporary= Straw w/netting
Permanent= Bermudagrass
Permanent= Bermudagrass
Permanent= Bermudagrass
Temporary Diversion/Berm # 7 => DA # 107
Temporary Diversion/Berm # 9 => DA # 109
Temporary Diversion/Berm # 11 => DA # 111
Calculate Flow - Rational Method
Calculate Flow - Rational Method
Calculate Flow - Rational Method
25-YrStorm
25-YrStorm
25-YrStorm
Q25 = CIA C= 0.30
Q25 = CIA C= 0.30
Q25 = CIA C= 0.30
1= 10.80 in/hr
1= 10.80 in/hr
1= 10.80 in/hr
Q25 = 11.02 A= 3.40 ac
Q25 = 11.02 A= 3.40 ac
Q25 = 4.54 A= 1.40 ac
Channel Slope= 1.00
Channel Slope= 3.00
Channel Slope= 0.50
Channel Depth= 2.00
Channel Depth= 2.00
Channel Depth= 2.00
Bottom width= 0.00
Bottom width= 0.00
Bottom width= 0.00
Side Slopes= 3.00
Side Slopes= 3.00
Side Slopes= 3.00
Velocity= 3.93
Velocity= 5.94
Velocity= 2.45
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10% _
Soil Type @ sandy loam Slopes= 0-10%
Channel Lining
Channel Lining
Channel Lining
Shear Calculation
Shear Calculation
Shear Calculation
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ins
dwate 0.95 ft
dwater- 77 ft
dwater- 0.77 ft
T= 0.5928 Ibs/ft2 s= 0.01 ft/ft
T= 1.44144 Ibs/ft2 s= 003 ft/ft
T= 0.24024 Ibs/ft2 s= 0.005 ft/ft
Temporary= Straw w/netting
I
Temporary= Straw w/netting '
Temporary= Straw w/netting
Permanent= Bermudagrass
Permanent= Bermudagrass
Permanent= Bermudagrass
Temporary Diversion/Berm # 8 => DA #
Temporary Diversion/Berm # 10 => DA # 110
Temporary Diversion/Berm # ] => DA # -
Calculate Flow - Rational Method
Calculate Flow - Rational Method
Calculate Flow - Rational Method
25-YrStorm
25-YrStorm
25-YrStorm
Q2s = CIA C= 0.30
Q2s = CIA C= 0.30
Q2s = CIA C= 0.30
1= 10.80 in/hr
1= 10.80 in/hr
1= 10.80 in/hr
025 = 18.14 A= 5.60 ac
425 = 15.88 A= 4.90 ac
Q25 = 11.99 A= 3.70 ac
Channel Slope= 1.00
Channel Slope= 1.50
Channel Slope= 1.50
Channel Depth= 2.00
Channel Depth= 2.00
Channel Depth= 2.00
Bottom width= 0.00
Bottom width= 0.00
Bottom width= 0.00
Side Slopes= 3.00
Side Slopes= 3.00
Side Slopes= 3.00
Velocity= 4.52
Velocity= 4.52
Velocity= 4.66
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10%
Soil Type @ sandy loam Slopes= 0-10%
Channel Lining
Channel Lining
Channel Lining
Shear Calculation
Shear Calculation
Shear Calculation
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
T=yds y= 62.4 Ibs
dwater 1.141ft
dwater 1.01 ft
dWd1ef= 0.91 ft
T= 0.71136 Ibs/ft2 s= 41 0.01 ft/ft
T= 0.94536 Ibs/ft2 5= 0.015 ft/ft
T= 0.85176 Ibs/ft2 s=ib 0.015 ft/ft
Temporary= Straw w/netting
Temporary= Straw w/netting '
Temporary= Straw w/netting
Permanent= Bermudagrass
Permanent= Bermudagrass
Permanent= Bermudagrass
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 11 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021

Sediment Basin # 1
Calculate Flow- Rational Method
10-Yr Storm
25-Yr Storm
Q10 = CIA
C=
0.30
Q25 = CIA
C= 0.30
1=
9.54
1= 10.80
Q10 = 127.07
A=
44.40
Q25 =
143.86 A= 44.40
2-Yr Storm
Q2 = CIA
C=
0.30
1=
6.18
Q2 = 82.32
A=
44.40
Calculate Required Surface Area
SA=Q25 x 435 sf/cfs
Q25 =
143.86
SA= 62577.36 ftz
Side Slopes = 3.00 :1
Pond Depth= 5.00 ft
Basin Dims (Per SA)
Weir=
177.00
x
354.00
=
62658 ft2
Top =
189
x
366
=
69174 ft2
Bottom =
147
x
324
=
47628 ft2
Volume Required
VR=Ax1800 cf/ac
A=
44.40
ac
VR= 79920.00 ft3
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD
Top=
62658.00
sf
Bottom=
47628.00
sf
VP= 275715.00 ft3
D=
5.00
ft
Basin has no outlet - to be permanent pond dug
out with excavation
Skimmer Basin # 3
DA # 3
Calculate Flow- Rational Method
10-Yr Storm
25-Yr Storm
Q10 = CIA
C= 0.3
Q25 = CIA
C= 0.3
1= 9.54
1= 10.8
Q10 = 21.1788
A= 7.4
Q25 =
23.976 A= 7.4
Calculate Required Surface Area
SA=Q25 x 325 sf/cfs
Q25 =
23.976 cfs
SA= 7792.2
Side Slopes = 3 :1
Pond Depth= 3 ft
Basin Dims
Weir=
63 x
126 =
7938 sf
Top =
75 x
138 =
10350 ft2
Bottom =
45 x
108 =
4860 sf
Volume Required
VR=Ax1800 cf/ac
A=
7.4
VR= 13320
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD
Top=
793.$
Bottom=
4860
VP= 19197
D=
3
OK
Weir Sizing
Per AutoCad Hydraflow Software
L=
10 ft
D=
2 ft
dwater
0.76 ft
Q25= 23.976 cfs
Skimmer Basin # EEW2- DA # '2
Calculate Flow- Rational Method
10-Yr Storm 25-Yr Storm
Q10 = CIA C= 0.3 Q25 = CIA C=
1= 9.54 1=
Q10 = 28.0476 A= 9.8 Q25 = 31.752 A=
Calculate Required Surface Area
SA=Q25 x 325 sf/cfs Q25 = 31.752 cfs
SA= 10319.4
Side Slopes = :S
Pond Depth= I=ft
Basin Dims
Weir= 72 x 144 = 10368 sf
Top = 84 x 156 = 13104 ft2
Bottom = 54 x 126 = 6804 sf
Volume Required
VR=Ax1800 cf/ac A= 9.8
VR= 17640
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD Top-- 10368
Bottom= 6804
VP= 25758 D= 3
OK
Weir Sizing
Per AutoCad Hydraflow Software
L= 10 ft
D= 2 ft
dwater 0.9 ft
Q25= 31.752 cfs
Velocity= 2.56 ft/s
Weir Lining
Shear Calculation
T=yds y= 62.4 Ibs
dwater= 0.76 ft
T= 0.47424 Ibs/ftZ s= 0.01 ft/ft
Use Class A Rip Rap
Skimmer Sizing
Calculate Dewater Time
Qd=V/Td V= 13320
Td= 3 2-5 days typ
Qd= 4440
Calculate Orifice Diameter
D=sgrt((Qd/(2310sgrt(h))) Qd= 4440
h= 1.75
D= 1.594575
,Use "Skimmerv, 1.6 Orifice
Skimmer Outlet Protection
New York Method 8.06.5 Manual
Diameter of Barrel = 4.'00 " La= 1.32 Use 7.5 ft
Velocity= 2.36 ft1s W= 1 Use 3.0 ft
Zone= 1. Stone Uameter= Class. A
vetocity= ft/s
Weir Lining
Shear Calculation
T=yds y= 62.41b5
dwater 0.9. ft
T= 0.5616 1 bs/ft2 s= 0.01 ft/ft
Use Class:A Rip Rap
Skimmer Sizing
Calculate DewaterTim°e
Qd=V/Td V= 17640
Td= 3 2-5 days typ
Qd= 5880
Calculate Orifice Diameter
D=sgrt((Qd/(2310s:grt(l))) Qd= 5880
h= 1.75
D= 1.83.5026
Use " Skimmer v 1.8 Orifice
Skimmer Outlet Protection
New York Method 8.06.5 Manual
Diameter of Barrel = 4.00 " La= 1.32 Use 7.5 ft
Velocity= 2.36 ft/s W= 1 Use 3.0 ft
Zone= 1 Stone Diameter= Class A
RAFTING AND DESIGN O
SERVICES, INC_
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 12 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021

Skimmer Basin # DA #
Calculate Flow- Rational Method
10-Yr Storm
Qio = CIA C=
1=
Qio = 27.4752 A=
Calculate Required Surface Area
SA=Q25 x 325 sf/cfs
SA= 10108.8
Side Slopes = 3 :1
Pond Depth= 3 ft
Basin Dims
25-Yr Storm
0.3 Q25 = CIA
9.54
9.6 Q25 = 31.104
Q25 = 31.104 cfs
Weir= 72 x 144 = 10368 sf
Top = 84 x 156 = 13104 ft2
Bottom = 54 x 126 = 6804 sf
Volume Required
VR=Ax1800 cf/ac
VR= 17280
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD
VP= 25758
OK
0
Top=
Bottom=
D=
Weir Sizing
Per AutoCad Hydraflow Software
L= 10 ft
D= 2 ft
dwater 0.9 ft
Q25= 31.104 cfs
Velocity= 2.54 ft/s
Weir Lining
Shear Calculation
T=yds
T= 0.461761bs/ft2
Use Class A Rip Rap
Skimmer Sizing
Calculate Dewater Time
Qd=V/Td V=
Td=
Qd= 6000
Calculate Orifice Diameter
D=sgrt((Qd/(2310sgrt(h)))
D= 1.85 365 6
10368
6804
3
y= 62.4 Ibs
dwater 0.74 ft
s= 0.01 ft/ft
18000
3 2-5 days typ
Qd= 6000
h= 1.75
Use 4 " Skimmer
Skimmer Outlet Protection
New York Method 8.06.5 Manual
Diameter of Barrel = 4.00 "
Velocity= 2.36 ft/s
Zone= 1
1.9 Orifice
C= 0.3
1= 10.8
A= 9.6
La= 1.32 Use 7.5 ft
W= 1 Use 3.0 ft
Stone Diameter= Class A
Ve foc ty= ft/s
Weir Lining
Shear Calculation
T=yds
T= 0.56161bs/ft2
Use Class A Rip gap
Skimmer Sizing
Calculate Dewater Time
Qd=V/Td V=
Td=
Qd= 5760
Calculate Orifice Diameter
D=sgrt((Qd/(2310sgrt(h)))
D= 1.816205
Y= 614 Ib8
dwa.tef= 0A fit
s= 0.61 'ft/ft
17280
3 2-5 days typ
Qd= 5760
h= 1.75
Use 4 " Skimmer
Skimmer Outlet Protection
New York Method 8.06.5 Manual
Diameter of Barrel = 4.00 "
Velocity= 2.36 ft/s
Zone= 1
Skimmer Basin # 6 DA # 6
Calculate Flow- Rational Method
10-Yr Storm 25-Yr Storm
Qio = CIA C= 0.3 Q25 = CIA
I 9.54
Qio = 22.0374 fit- 7.7 Q25 = 24.948
Calculate Reauired Surface Area
1.8 Orifice
La= 1.32 Use 7.5 ft
W= 1 Use 3.0 ft
Stone Diameter= Class A
SA=Q25 x 325 sf/cfs Q25 = 24.948 cfs
SA= 8108.1
Side Slopes = 3 :1
Pond Depth= 3 ft
Basin Dims
Weir=
U140 =
Top= > =
Bottom x
=
Volume Reauired
VR=Ax1800 cf/ac A= 7.,7
VR= 13860
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD Top= 8192
Bottom= 5060
VP= 19878 D= 3
OK
Weir Sizing
Per AutoCad Hydraflow Software
L= 10 ft
D= 2 ft
dwater 0.78 ft
Q25= 24.948 cfs
8192 sf
10640 ft2
5060 sf
C= 0.3
1= 10.8
A= 7.7
Skimmer Basin # DA #
Calculate Flow- Rational Method
10-Yr Storm
Qio=CIA C=� 0.3
Qio = 28.62
Calculate Required Surface Area
SA=Q25 x 325 sf/cfs
SA= 10530
Side Slopes = 3 :1
Pond Depth= 3 ft
Basin Dims
Volume Reauired
1= 9.54
A= 10
25-Yr Storm
Q25 = CIA
Q25 = 32.4
Q25 = 32.4 cfs
Weir= 73 x 146 = 10658 sf
Top = 85 x 158 = 13430 ft2
Bottom = 55 x 128 = 7040 sf
VR=Ax1800 cf/ac A= 10
VR= 18000
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD Top= 10658
Bottom= 7040
VP= 26547 D= 3
OK
Weir Sizing
Per AutoCad Hydraflow Software
L= 15 ft
D= 2 ft
dwater 0.74 ft
Q25= 32.4 cfs
Velocity= 2.59 ft/s
Weir Lining
Shear Calculation
T=yds
T= 0.486721bs/ft2
Use Class A Rip Rap
Skimmer Sizing
Calculate Dewater Time
Qd=V/Td V=
Td=
Qd= 4620
Calculate Orifice Diameter
D=sgrt((Qd/(2310sgrt(h)))
D= 1.626577
y= 62.4 Ibs
dwater 0.78 ft
s= 0.01 ft/ft
13860
3 2-5 days typ
Qd= 4620
h= 1.75
Use 4 " Skimmer
Skimmer Outlet Protection
New York Method 8.06.5 Manual
Diameter of Barrel = 4.00 "
Velocity= 2.36 ft/s
Zone= 1
1.6 Orifice
C= 0.3
1= 10.8
A= 10
La= 1.32 Use 7.5 ft
W= 1 Use 3.0 ft
Stone Diameter= Class A
RAFTING AND DESIGN O
SERVICES, INC_
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
O
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REVISIONS
2021.08.10 - REVISED PER ADI RECEIVED
J U LY 30, 2021
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 13 of 13
Reviewed by:
MTB
Project Number:
DDS JOB #: 2021-07
Date:
MAY 2021