01-10 Alamance Mine Plans - 20180924

ALAP4ANCE QUARRY & CONSTRUCTION
MATERIALS
342 CLARK ROAD
SNOW CAMP , NC 27349
ALAMANCE COUNTY , NC
RD
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SHEETSHEETINDEX OL° °°M �COVER C101 EXISTING CONDITIONS �\
C201 WNE MAP
C202 PLANT AND STOCKPILE PLAN LOCATION MAP
C203 WNE PLAN
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C204 RECLAMLOTION PLAN PRELIMINARY CONSTRUCTION re
C301 OVERALL SEDWENTATION & EROSION CONTROL PLAN
C302 SKWMER BASIN GRADING
C303 ENTRANCE ROAD PLAN AND PROFILE
C304 DRAINAGE AREAS SITE DEVELOPER/OWNER � La Be LLa
COGS PARKING , STREAM CR �� SSING , ENTR ,�, NCE ROAD DET ,�JLS u
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C4C' 1 SITE DELAIL _�c
C402 SITE DETAJLS sss St . George Square
Suite 300
C403 SITE DETAILS Winston-Salem , Ncznos
C501 EROSION AND SEDWENT CONTROL DETAJLS 336 -8424065
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PROJECT NO: 2180544

GENERAL NOTES LaBeLLa
PID: 102715 APp _ _ _ RO ERTY LINE PERMIT BOUNDARY 1. EXISTING SITE FEATURES,TOPOGRAPHY,AND PROPERTY DATA FROM INFORMATION PROVIDED BY COE FORESTRY AND 00
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MICHAEL T FAIN ARENT GAS �/ PID: 102733
P DPID: 102733 ANNY R STUART LINE EASEMENT DANNY R STUART SURVEYING.ALSO,SITE PLAN INFORMATION OBTAINED FROM DRAWING SEALED BY CHRISTOPHER FAULK, PLS DATED
1/10/18.
ROPERTY NE/F GREEK 0 2. OBTAIN ALL APPLICABLE PERMITS AND PLAN APPROVALS PRIOR TO BEGINNING WORK 615 St. George Square
? ERMI T D 3. CONTRACTOR IS RESPONSIBLE FOR VERIFYING ALL EXISTING FEATURES PRIOR TO START OF CONSTRUCTION.CALL 811. Suite 300
OD RY I M ANY DISCREPANCY IN LOCATION, SIZE,OR DESCRIPTION OF EXISTING FEATURES SHOWN ON THE PLANS SHALL BE Winston-Salem, NC 27103
Q I BROUGHT TO THE ATTENTION OF THE ENGINEER IMMEDIATELY. 3 3 6-8 4 2-4 0 6 5
?ROPE- 4. THE CONTRACTOR WILL BE REQUIRED TO DO ALL WORK NECESSARY TO PROVIDE SUITABLE CONNECTIONS WITH ALL C#0 4 3 0
\ SINE/ pERMI T BOUNDARY L / ROADS,STORM DRAINS,AND UTILITIES ENTERING THIS PROJECT. I a b e I I a p C.C o m
/ 5. NO SUBSURFACE INVESTIGATIONS OF DETERMINATION HAS BEEN MADE BY THE ENGINEER.THE CONTRACTOR SHOULD
PID: 102700 Q \ / MAKE HIS OWN INVESTIGATION AS TO THE SUBSURFACE CONDITIONS.
SNOW CAMP BAPTIST CH
J APPAREN 6. CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING, RELOCATING,AVOIDING,AND PROTECTING ALL EXISTING UTILITIES
T TRANSMIS AND FEATURES ON SITE. T
\ \ I w EgSEMENT SION LI NE 7. PRIOR TO FINAL ACCEPTANCE THE CONTRACTOR SHALL ULTIMATELY BE RESPONSIBLE FOR CORRECTING OR SEEING TO
Q THE CORRECTION OF ALL PROBLEMS ASSOCIATED WITH THE PROJECT. INCLUDING THOSE ITEMS NOT NECESSARILY
P ID: 02733 O COVERED BY THE PLANS,TO ENSURE THE SATISFACTORY COMPLETION OF THE TOTAL PROJECT.
X \ PID: 102799
o � \ PAMELA A CAUSEY REVOC TRUST 8. CONTRACTOR SHALL BE RESPONSIBLE FOR THE COORDINATION OF THE REMOVAL AND/OR RELOCATION OF ANY EXISTING
UTILITY POLES,GUY WIRES,AND/OR ANY OTHER EXISTING FEATURES AS REQUIRED. GO
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/ 9. CONTRACTOR MUST CONSTRUCT ALL WORK UNDER THE SUPERVISION OF A QUALIFIED GEOTECHNICAL FIRM.
Q HOUSE 10. ALL WORKMANSHIP AND MATERIALS TO CONFORM WITH NCDOT SPECIFICATIONS AND DRAWINGS UNLESS OTHERWISE
LOCATED ER O NOTED.
/,FFROM CENTER OF
/ OPERATION
<� �� PID:102769
BRIAN J LEE
./ PID:102772
HEATHER RATCLIFFE
PID: 1 so qLL T
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PID:102748 I OHO EXISTING BUILDING L_J
PROPOSED BUILDING
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PROPERTY CL�NE/OF G EE I �J EXISTING MINOR CONTOURS
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PID: 102770WANDA W RAY
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PID: 10698 Y I I \ \ PID:102767 ALAMANCE
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PID: 102726 J PID:102762
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\ ` O NO: DATE: DESCRIPTION:
REVISIONS
Q PROJECT NUMBER:
\ — — — — 2180544
\�\\ PID: 102598 DRAWN BY: KCG/ATC
Q REVIEWED BY: PAS
PID: 102579 5°
HA SNOW CAMP, LLC ISSUED FOR:
CIO INV = 610.89"
♦ Q-P (BURIED) PID:102608 REVIEW
� 12" INV= 610 9' a CHARLES J BYRD
BOTH ENDS
BURIED DATE:
CID1S" RCP 9/24/18
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615 St. George Square
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Winston-Salem, NC 27103
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PID:102769 / ' / \ / / > ) J 1 / —� / /
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\ /� / �\ \\ / / 125' OPERATIONS SETBACK BUFFER
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C APPROXIMATE IMPACTPHEN NI IT�I �1 ALAMANCE CATEGORY
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/% III I I I \\ (ISOLATED \ \ I ��� \ — — —dr—
/ I I l \ \ 11 0 1 l L� t:'�l 027 STOCKPILE 23.26
LAND I / \ � \ \ -
II 5._0 / WASTEPILES 20.51
I I IIII \ \ \ \ UN ISTUIF I I 'EA\ J
I ( \ \\ \ \ \ / �euF r \ \ PROCESSING/HAUL ROAD 6.18
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NOTES FROM SITE PLAN SEALED �� 12 Nou D G\„T \- I _ W \ �/ / ERM 2 I \ Q J \ \ /�/ / MINE EXCAVATION 29.40
BY CHRISTOPHER FAULK, PLS ON 1/10/18. Q e END - Q / - HOUSE \ /
- PROPOSED IMPERVIOUS AREA = 5.0 % \ c;\ I wETLAa�A �\ \ / / / ( %�� 1, I FROM 9 z� a
r� \ OTHER (ACCESS ROAD) 0
L--J Q,,, TER OF
- PONDS TO BE FILLED ONLY WITH NCDEQ APPROVAL _ ) 1 / \ ` `O f p10N \\ ` \ \ / / TOTAL IMPACT 82.95
PER 401 / 404 PERMITTING
- AREA OF OPERATIONS IS BUFFERED A MINIMUM OF _\ I ae \ //
125' FROM PROPERTY LINES I �� � / / \ \l PID:102�64I
- TEMPORARY LIGHTING WILL BE USED FOR ANY REQUIRED - \ \ EXaSTIN 16 / �- ��y TIMOTHY J Mu o NE�� /
_\` \\ \ _\ UNDISTURBED III/
NIGHT OPERATIONS 1 o' B S �, STR M BUFFS MINING LIMITS
- FINAL DESIGN AND PLACEMENT OF STORMWATER CONTROL I / / 50 I NG I C ✓ \ /� Q- ��j, '� 1 \ \ \ \ I \\\\
UNDISTUR BED LI ITS
DEVICES TO BE CONFIRMED BY APPROVED SEDIMENT AND -� //� g ��= \ BUFFER
EROSION CONTROL PLAN Wfl BB \ / / —= \ / I I I 1 OVERBURDEN SLOPE 2:1
- BERMS TO BE CONSTRUCTED 8' +/- HIGH AND PLANTED \ j / B \ / ^ I �_ \ / 1 J MINING LIMITS 8 H x 50 W BERM
WITH LOBLOLLY PINE g2s97 z I B PID: 102747 ` / I �� / / / / _ EXISTING GROUND_ SEE BERM DETAIL 2
f� V / o o ` _\ 20' SAFETY BENCH _
- LOBLOLLY PINES TO BE "DOUBLE-STAGGER" PLANTED PER A F ACK�. ( RC�PO E / /WEfL-AN ?` � � � ~� \ \ � � �- -� \\ � � �
SCREENING GUIDLINES DESCRIBED IN ALAMANCE COUNTY / \ 1 / /STI
ORDINANCE SS IN \ / ��C / �\ ✓ _ \\ \\\ / / / / -� �j/ APPROXIMATE WATER LEVEL AFTER RECLAMATION
- ALL VEGETATIVE SCREENING MUST BE VERIFIED BY VISUAL -� f I \\ / \ VARIES
/ / I 1 PROPOD 1\ \�� \ \ / / / `i / (50' MAX)
INSPECTION PRIOR TO ISSUANCE OF AN OPERATIONS PERMIT I OFF RACCOAD � ���� /\` / B�DIST REED j ��/�-�\\ V \
FOR THE FACILITY. PLEASE CALL 336-570-5053 TO / \\ PIz7 / /� �- \ I Jam\ \ I I
1 Alamance County Mine
SCHEDULE AN INSPECTION. \/{ 0 PLEX 1 r` \ \ /= 11 //1)J// II I DPI\ o n 62 sAn16ERs /� ��- �J /J I
\ g J I / REFE 0 DST ! / ✓ / / �� / / I �/ /// I I I I \ �� / // l (OARMAX)
- INTENT-TO-CONSTRUCT PERMITS ARE VALID FOR (1) YEAR w N / BT'°' EEp" OPOSED/ �_JJ HAUL ROAD
FROM THE DATE OF ISSUANCE. z / KINGI
F
- TWO (2) COPIES OF A POST DEVELOPMENT/ASBUILT PLAN \ \ w / I� \ j /� ���, \��i `/ �j ( 50)
ARE REQUIRED TO BE FILED WITH THE ALAMANCE COUNTY �:, \\ \ � �� � /� n � / I � /
zz
PLANNING DEPARTMENT AT THE COMPLETION OF CONSTRUCTION \1 O J / / / \ // I \
AND PRIOR TO ISSUANCE OF AN OPERATIONS PERMIT. HOUS R� � I I ! UmCCTR �� a 1 \ // i VARIES H 1 V SLOPE
AN OPERATIONS PERMIT WILL BE REQUIRED PRIOR TO BEGINNING +I (1 \� / / \ / /y cpl/// \\\\ / �� / �\ 270'-332' �15' BENCH
00 I f / / \ TYP.
OPERATION OF THE FACILITY. PLEASE CALL 336 570 4053 \ I /\ I/ O /l � \ �- / I G )
FOR ADDITIONAL INFORMATION. J \ / / / 1 O / �� \�\ \ / / / /�-
- OPERATIONS PERMITS ARE VALID FOR THREE (3) YEARS.
PLEASE CONTACT THE ALAMANCE COUNTY PLANNING
DEPARTMENT AT 336-570-4053 TO RENEW THIS PERMIT \ \ o PRIOR TO EXPIRATION. \ l \\ ✓ //
- LIGHTING TO BE INSTALLED PER LIGHTING PLAN DETAIL PIT FLOOR
SUBMITTED WITH SITE PLAN ( I 1 I II ( / / / I ( I �� I J / / / // (VARIES IN WIDTH)
- ACCESS WAYS, WALKWAYS AND PARKING AREAS SHALL ' \ I 17�=
BE LIGHTED ADEQUATELY BY LIGHTING FIXTURES WHICH 1 IDI I s �� N0: DATE: DESCRIPTION:
SHALL BE SO INSTALLED AS TO PROTECT THE STREET 1 \I HA S �7CAJ L \ P N�URIE \ \ I �� I/ / � \ �� ID 1 s\ \ I I MINING AREA SECTION "A-A REVISIONS
AND NEIGHBORING PROPERTIES FROM DIRECT GLARE OR \ \\` \��e�T"END '"V= 1 '� �� ""A B l ) J > ) 1 J I l SCALE. 1"-100'HAZARDOUS INTERFERENCE OF ANY KIND. APPLICANTS \\\� \ \ auD
\ 18"RCP PROJECT NUMBER:S I / � �� � �\ \ / I � � 2180544
ARE ENCOURAGED TO USE LIGHT SHIELDING AND FIXTURES > , FRj 0?,.1 5p_
THAT ARE I -B,D.47 All CV
ASSOCIATION
PPIRDOVEASBTHESE FNXTURESIOCONSERVE ENERGY \ �( �� � > TITA E sFc �gIL0 �� /�c /Q oo/S R _ /� ) / J / 1 \J / / / \
��1 \ �/ / DRAWN BY:
( ) / / U�A7 �'q� SF �/ Q J= SE ACK // f / I /- \ 18' KCG/ATC
o REDUCE MONTHLY COSTS, AND MINIMIZE THE IMPACT OF / BERM REVIEWED BY:
LIGHT POLLUTION ON SURROUNDING PROPERTIES. \ I I 1 C ( \ N�� TqT� J / / C0 J l/ / / / / \ I I / /� �� ) ( / BERM SLOPE 2H:1 V PAS
(HIDO SECTION 4, ITEM 1) \ \ �'v �o / // / / / ✓ I / \ \ ) �/
125' OPERATIONAL SETBACK TO INCLUDE 50' SCREENING \ \ S / / / ISSUED FOR:
BUFFER REQUIRED BY HIDO SECTION 4 ITEM G. NATURAL �� \ � N� � v`y Q PID: 102 / / / J / I / / / � REVIEW
VEGETATION TO BE SUPPLEMENTED AS DESCRIBED IN HIDO \\ �� \ \ '�` / 1 / MA R OTT /// \ \ // \ / 50 WIDE
~ \\ \ \ w /�,k t� /�� / I 1 / AT BASE
APPENDIX "A" PER SUBMITTED SCREENING PLAN SUBJECT TO \ \\ l , \ \ -� 1 ? / O / /�j I / J \ / /
- APPROVAL OF PLANNING DIRECTOR \ \ I / \ �y JI J / / / f I �/ l l J I I / I / j SEE DETAIL 2/403 FOR ADDITIONAL DATE: 9/24/18
STRUCTURES NOT TO EXCEED 40' IN HEIGHT ABOVE NATURAL INFORMATION
E ELEVATION GRADE PER HIDO SECTION 4 ITEM B \ J �d �� --� / \ \� /�
g BERM 1 DETAIL DRAWING NAME:
- BUILDING ON PID #102726 TO BE REMOVED SUBJECT TOCD
NOT TO SCALE
o PROPER DEMOLITION PERMITS
- FINAL APPROVAL AND OPERATION PERMITS WILL BE / \ \ ( ( f ti o, l
Cz CONTIGENT UPON RECIEPT OF FINAL STATE AND FEDERAL '�/ �/
1 \ �170595 Q
a - APPROVALS CHRIS KINSEY .
M HISTORIC PROPERTIES TO REMAIN OR MADE AVAILABLE / AMANDA IVEY vooD/ *NS
0
FOR RELOCATION UPON CONSULTATION WITH HISTORICAL �/ I \ \ \ � � I I - 00' � z PROPERTIES COMMISSION MINE MAP\ \ i ( � ` \ \ ✓ / J 1 \ � � I '� f / �
18'
Y N BERM BERM SLOPE 2H.1 V
OVERBURDEN
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615 St.Suite 300eorge Square
Su
\ ♦ / SKIMMER BASIN #10 / / \ \ \ \ `� \ \ \ — / Winston-Salem , NC 27103
336-842-4065
label lapc.com
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SKIMMER BASIN #12 \ \ \ \ \ \ \
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Alamance County Mine
SKIMMER BASIN #3_
:N0 DATE: DESCRIPTION:
REVISIONS
PROJECT NUMBER:
-
1 2180544
DRAWN BY:
KCG/ATC
REVIEWED BY:
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POND #2 f" —— � \` /
ISSUED FOR:
BOTTOM — 569 Co
REVIEW
DATE:
9/24/18
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PROPOSED -\ \� — LEGEND �\ l �\ ✓ \ \ \ \ I\ I
\ \\ / \ _ — 615 St. George Square
SHOP / Z \ PROPERTY LINE Suite 300
EXISTING BUILDING 0 \ \ - I Winston-Salem, NC 27103
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PROPOSED BUILDING �_� � _ - � / / � \ \ 1 I I �
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PROPOSED SECURITY FENCE x—x—x—x
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100' STRUCTURE SETBACK BUFFER - - - - - - - - - - - - - - - ,\ `�\
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PROPOSED SKIMMER BASIN
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615 St. George Square
Suite 300
Winston-Salem, NC 27103
336-842-4065
C#0430
PID: ELT APP _ _ OPERTY LINE PERMIT BOUNDARY l a b e l l a p c.c o m
MICHAEL T FAIN PID: 102733 A ENT G`>rs LINE PID:DAN 1 R7STUART
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ROBERT L RUMLEY
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NORMAN F JACKSON, Of U C POND
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PID: 102598
\ � Gw�2J N0: DATE: DESCRIPTION:
PID: 102579 s / X LVISIONS
HA SNOW CAMP, LLC
} I PID:102608 PROJECT NUMBER:
CHARLES J BYRD 2180544
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RFFN/�cJ / THOMAS MCDERMOTT
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PID:170595
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TOTAL DISTURBED AREA = 83.52 ACRES LaBeLLa
- \- ,� \ - _ - ► -o -��/ EROSION CONTROL SEQUENCE NOTES Powered by partnership.
LEGEND � \\ ) ) �\ � SKIMMER BASIN
1. OBTAIN GRADING/EROSION CONTROL PLAN APPROVAL AND PERMIT.
LIMITS OF /� - -�i 615 St. George Square
DISTURBANCE j j / /f� / f I I I I \ �� 2. CONTACT EROSION CONTROL INSPECTOR TO ESTABLISH A PRE CONSTRUCTION CONFERENCE AND INSPECTION EXISTING PROPERTY LINE PERIMETER SECURITY Suite 300
FENCE TO CLEAR SPAN- - \� �\ \I I �/ SCHEDULE. NC 27103
111 �E / ►
x JURISDICTIONAL AREA ��� Winston-Salem ,
EXISTING PROPERTY LINE - - \ l / - -� SKIMMER BASIN #3 SELF INSPECTION-----EFFECTIVE OCTOBER 1,2010,PERSONS CONDUCTING LAND-DISTURBING ACTIVITIES,
� / / / - 336-842-4065
r � / / '� STONE OUTLET TYP. LARGER THAN ONE(1)ACRE MUST INSPECT THEIR PROJECT AFTER EACH PHASE OF THE PROJECT,AND DOCUMENT
PROPOSED BUILDING L_J / �� \ I SKIMMER BASIN #1 ( ) THE INSPECTION IN WRITING ON APPROVED FORMS, C#0 4 3 0
PROPOSED BUILDING SEE DETAIL 7/C502
/ //� / / / _� / / / / \ THE PHASES ARE AS FOLLOWS: I a b e I I ap C.C om
LIMITS OF
/// / � I 1.INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES.
\ .
MINE PERIMETER %/ L //� �_ / \ l ( DISTURBANCE ,
SKIMMER BASIN #12 I ( I 2.CLEARING AND GRUBBING OF EXISTING GROUND COVER.
PROPOSED SECURITY FENCE x-xxx
CONTRACTOR TO PROVIDE CURLEX I \\ TEMP. SEDIMENT I I 3.COMPLETION OF ANY PHASE OF GRADING OF SLOPES OR FILLS.
\ TEMPORARY DIVERSION DITCH TDB- /j/ STONE OUTLET(TYP.) EXCELSIOR MATTING ACROSS THE \\� ,FENCE (TYP.) J 4.INSTALLATION OF STORM DRAINAGE FACILITIES. F T
/ SEE DETAIL 7 C502 / ENTIRE LENGTH & WIDTH OF ALL
\ SLOPES 3H:1 V AND STEEPER/ / / - X i \\\� SEE DETAIL 2/C501
\ / f / 5.COMPLETION OF CONSTRUCTION OF DEVELOPMENT. �`P
TEMPORARY SILT FENCE O
STONE OUTLET (TYP.)
PROPOSED ENERGY DISSIPATOR / SEE DETAIL 7/C502 6.ESTABLISHMENT OF PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION./
TEMPORARY CHECK DAM �
LIMITS OF• / / / I / / / \ \ \\ 1 / / / � 3. CLEAR SITE ONLY AS NECESSARY TO INSTALL INITIAL EROSION CONTROL MEASURES AS FOLLOWS:
\ �
1
DISTURBANCE PERIMETER SECURITY -
- '� A.TEMPORARY CONSTRUCTION ENTRANCE/EXIT AT CLARK ROAD.� � � � FENCE TO CLEAR SPAN �
�\ C17 JURISDICTIONAL AR B. THIS SITE HAS TEMPORARY SKIMMER BASINS AND SEDIMENT BASINS AS SHOWN. O�
S \ C.TEMPORARY DIVERSION BERMS
D.TEMPORARY SILT FENCING AND STONE OUTLETS
E. SEED EMBANKMENTS AND DISTURBED AREAS OF DEVICES(INCLUDING"CLEAN"WATER DIVERSION)UPON
COMPLETION OF CONSTRUCTION.SEE GROUND STABILIZATION CRITERIA BELOW FOR MORE INFORMATION.
LIMITS OF �\ \ I / \\ 4. BEGIN CLEARING,GRUBBING,AND STRIPPING OF SITE AS REQUIRED.
DISTURBANCE I I / \ EARTHEN-MATERIAL STOCKPILES ON-SITE FOR LATER DISTRIBUTION AND/OR REMOVAL.AREAS DEDICATED FOR
MANAGEMENT OF LAND CLEARING AND DEMOLITION DEBRIS,CONSTRUCTION AND DOMESTIC WASTE,AND
TAILINGS POND 1 / I I \ HAZARDOUS OR TOXIC WASTE SHALL BE LOCATED AT LEAST 50 FEET AWAY FROM STORM DRAIN INLETS AND
# I I I I C I _� 1 \ SURFACE WATERS UNLESS IT CAN BE SHOWN THAT NO OTHER ALTERNATIVES ARE REASONABLY AVAILABLE AND
TEMP. SEDIMENT \� �� \ / 500'xl00, -1 \ I 1 ( )'
O \�p - N ) �`�i I WITHIN AREAS PROTECTED BY EROSION CONTROL MEASURES.
FENCE (TYP.) � � LIMITS OF 'C � � � � � \ � � � \ " I / / �- -� � I \ I ��
SEE DETAIL 2/C501 \ DISTURBANCES I o TAILINGS POND #2 Y / \ \ 5. BEGIN SITE GRADING.MAINTAIN EROSION CONTROL DEVICES IN ACCORDANCE WITH THE MAINTENANCE PLAN.
// / / / // \\ I ` ` 1 I I I ( - �� \ ✓ \ \ ' 500'xl 00' /I� \ 1 J l I �i /� INSTALL ADDITIONAL EROSION CONTROL MEASURES AS REQUIRED.
\ t- m
�' 6. INSTALL STORM DRAINAGE SYSTEM AND UTILITIES.STORM PIPING MUST BE INSTALLED TO THE POINT WHERE IT
ENTERS EACH DEVICE.COMPLETION OF PIPING WILL ONLY BE ALLOWED ONCE THE SITE HAS BEEN DEEMED STABLE BY
\ ` \ LIMITS OF / \
\ LIMITS OF \ _/ SKIMMER BASIN #8 O 5 �� - / / THE EROSION CONTROL INSPECTOR.INSTALL PROTECTION AROUND ALL INLETS AS STORM DRAIN SYSTEM IS
/ DISTURBANCE _- / �� DISTURBANCE /// '� / / INSTALLED.
/ > / / / BUFF XI-
UNDISTURBED I I '
SKIMMER BASIN #10 . / 50 UNDISTURBED
DESCRIPTION STABILIZATION STABILIZATION
TIMEFRAME TIMEFRAME
\ OIL/` �� \ \ EXCEPTIONS
LIMITS OF ( ( r / �G j/ LIMITS OF \ / \ I `On ��� PERMANENT DIKES, 92016 LaBella Associates
\ J , DISTURBANCE` 1 yvL DISTURBANCE ^ \� / 0 / I`� / \� SLOPES
I I \ / 1 SWALES,DITCHES,& 7 DAYS NONE
TEMP. SEDIMENT ) I NP -
/ FENCE (TYP.) I R // SKIMMER BASIN #13 \ \
1
SEE DETAIL 2/C501 I I� / R� �5 \ ` / / /� l 1 I �/" ` \ ` / \ SLOPES STEEPER THAN 7DAYSIN
31 LENGTH IF SLOPESARERE NOTSTEPER
THAN2:1� 4 DAYS ALLOWED
SKIMMER BASIN #5 `-/ N \ SKIMMER BASIN #1 1 (( ( / �' \ \ \ l / ,Q )
TEMP. SEDIMENT 0 \ \ S \ \ \ \\ \ \ \ \ _// `` \ 1 0 �� �\ O 1 SLOPES 3:1 OR 14 DAYS 7DAYS FOR SLOPES 50 ALAMAN C E
FENCE (TYP.) I� T,Q� �\ \ ( \ \\ \\ I / / / / 1 I S ` FLATTER IN LENGTH
( / SEE DETAIL 2/C501 / \\ "7if' \ 1 ` \ - 13
\ 1 I / I O�� / ALWOTHER
WITH O ES AREAS 14 DAYS NONE AGGREGATES L L C
/ SKIMMER BASIN #4 \ 1 I I I ` ` /0 G / FLATTER THAN4:1
�° - TEMPORARY DIVERSION I
-Si_ � Q
-� DITCH TYP.
oA o ' STONE OUTLET (TYP.) ( /� \\ \ �_ SEE DETAIL)3/C502 / 50' UNDISTURBED
/ fP SEE DETAIL 7/C502 / j \\\ I / J / , / / / \ BUFF
EW 2 \ ' r \ / 7. PRIOR TO THE CONTRACTOR DEMOBILIZING FROM THE SITE(AT APPROXIMATELY 45 DAYS PRIOR TO
/ / l DEMOBILIZATION),THE FINANCIAL RESPONSIBLE PARTY OR THEIR DESIGNEE WILL NOTIFY THE ENGINEER AND THE
STREAM CROSSING DESIGNATED EROSION CONTROL INSPECTOR OF THEIR ANTICIPATED DATE TO LEAVE THE SITE.AN ON-SITE
(�LIMITS OF / INSPECTION WILL BE CONDUCTED PRIOR TO THE LEAVE DATE BY THE ENGINEER AND/OR THE DESIGNATED EROSION
. � \ \ � / / � / � / � -
/ \DISTURBANCE .� I I CONTROL INSPECTOR TO MAKE CERTAIN ALL ACTIONS ITEMS HAVE BEEN ADDRESSED BY THE CONTRACTOR.
-� \ �// _ � � I /` // I I / / // / /� / � ) � /
STONE OUTLET (TYP.) /
SEE DETAIL 7/C502 VER HS BEEN ESTABLIS
OVER ALL DISTURBED AAR AREAS AND SMOTE HAS BEOEN STABILIZED.REMOVE EROSION CL MEASURES UNTIL VEGETATIVE OONTROL MEASURES ON YHED
SKIMMER BASIN #6 \ _ \ I // / \ \ ` \ \ // ' / // AFTER FINAL INSPECTION AND APPROVAL BY ENGINEER.
/ \ \ 50' UNDISTURBED
W 1 J \ \ 1 \' / d \ \ \ ♦ /
` LIMITS OF BUF- i ERM 1. INSPECT ALL SEDIMENTATION AND EROSION CONTROL DEVICES FOR STABILITY AND FUNCTION EACH WEEK
E EROSION CONTROL MAINTENANCE PLAN(CONTRACTOR MUST INCLUDE MAINTENANCE IN BASE BID)
_ _ - MINING \IMITS\\� A �/ / I \ \ / AND FOLLOWING EACH RAINFALL EVENT.
DISTURBANCE '/ �//\ \ \ � 1 \� �`
2. REMOVE SILT/SEDIMENT FROM TEMPORARY DEVICES WHEN ACCUMULATED VOLUME HAS REACHED 50%
SKIMMER BASIN #7\ /TEMP. SEDIMENT / ;� / CAPACITY.
FENCE (TYP.)
LIMITS OF ~- / \ I i i / / // / SEE DETAIL 2/C501 / / \ / 3. REMOVED ACCUMULATED SILT/SEDIMENT FROM BEHIND TEMPORARY SEDIMENT FENCE WHEN DEPTH
`� o \ -LIMITS OF
DISTURBANCE \ \ I DISTURBANCE \ \\ / / j / EXCEEDS APPROXIMATELY 0.5'.REPAIR AND REPLACE SILT FENCE AS NECESSARY.
\o - _ \\ r ♦ \ \ v - / \� /F
�� I 4. SEED AND STABILIZE TEMPORARY DIVERSION BERMS IMMEDIATELY AFTER CONSTRUCTION INCLUDING LIMITS OF "CLEAN"WATER DIVERSION BERMS.RE-GRADE/REPAIR BERMS AS REQUIRED.
DISTURBANCE
1 x 5. CONTRACTOR SHALL APPOINT AN ON SITE INSPECTOR AND MAINTAIN RECORDS OF INSPECTIONS IN
ACCORDANCE
SG \ / / I \ ASRDAN E WITH THE PROVISION F THE GENERAL NPDES ST RMWATER DISCHARGE PERMIT FOR
R AI a m a n c e Count Mine
CONSTRUCTION ACTIVITIES.
LIMITS C fl SEDIMENT
\ FENCE (TYPDISTURBANE
, 1 TEMP. CHECK DAM
(TYP') 1 SEE DETAIL 2 C501
\ f SEE DETAIL 4/1501 /
/
END 2\ ` ./'/ I �� �, � l � / / \ \ � � � \ A O DETAILED CONSTRUCTION SEQUENCE
00"I LIMITS OF �/ / \ _� _� / �_ \ l ( / \ x ' 1 �9 �j \� 1. CONSTRUCT THE TEMPORARY SURGE STONE CONSTRUCTION ENTRANCE/EXIT OFF CLARK ROAD.
/' J J I DISTURBANCE \��\
2. INSTALL SILT FENCE AND STONE OUTLETS FROM CLARK ROAD TO THE SOUTH SIDE OF THE STREAM
TEM PORARY / / / \ n y / \ ✓ \ \ / / g� / r \ \ I� \\\ \ 9 \ ( LOCATED AT 16+87.SILT FENCE TO BE LOCATED ON BOTH SIDES OF THE ROAD AND SOUTH BANKS OF�' \ $0, \ / , P \ \ \ \ \ L \ \ ( THE STREAM.
/ CONSTRUCTION
ENTRANCE/EXIT STONE OUTLET TYP.)
END 1 / / / �/ \ \ I FER �\ SEE DETAIL 7/C502 - �� /� -� �\ `_ J ) \ \ O \\ \ 3. INSTALL SKIMMER BASIN 6 AND SKIMMER BASIN 7 AND THEIR ASSOCIATED TEMPORARY DIVERSION
M STONE PIPE INLET ( \ �/ �--- 1 ' LIMITS OF 1 I - -� / j DITCHES AND SLOPE DRAIN(IF CALLED FOR).
m PROTECTION / / I \ �J \ \ \ \ \ /\_ i/ \ � DISTURBANCE \ � ,� - � � /� ��-- ��
\ \ �\ _ , TEMP. SEDIMENT / �j \ u� \�\ 4. INSTALL IMPERVIOUS CLEAN WATER DIKE AND BYPASS PUMPING SYSTEM AS SHOWN ON SHEET C402.
x \ r \ \ \ / FENCE (TYP.) k I j�o 09 0 INSTALL THE PERMANENT 54"PIPE AND ENDWALLS AT STATION 16+87. -- - --
rn zp / I \\ I ) \ \ L - 1- - ��� SEE DETAIL 2/C501 goo �i \ \\ N0: DATE: DESCRIPTION:
\\ \ \ \ \\ �� -\ \ / x1 L__J Fp9 �� s 5. APPLY 10"STONE BASE LAYER TO ENTRANCE ROAD AND COMPACT.
\ / o REVISIONS
i o 0
\ I I Z \ \\ \ / ti \ 6. BACKFILL,PREPARE SLOPES AND OTHER DISTURBED AREAS AND STABILIZE.
PROJECT NUMBER:
2180544
I I D 1 \ \ ( \ o \ \ / \ / / r 7. INSTALL SILT FENCE AND STONE OUTLETS ALONG NORTH SIDE OF THE STREAM.
x n ( �, / \ x ��\
z = D \ \ \ \ \ Q� / I I // / _�-\ \\ j�0, / / rA 8. INSTALL SILT FENCE AND STONE OUTLETS AROUND THE EXISTING STREAM BUFFER AND PROPERTY DRAWN BY: KCG/ATC
/ I l ( r BOUNDARY(WHERE DENOTED ON PLANS). INSTALL SKIMMER BASINS 4,5,13,11,3,2,1,12,8,AND
a' I'� r \ AO\ I \ \\\ \ \ I \ \ \ \ ` I I ` �� CR \ �5C (/ / '� 1� C 10 AND THEIR ASSOCIATED TEMPORARY DIVERSION DITCHES AND SLOPE DRAINS(IF CALLED FOR). REVIEWED BY:
o 1 \ \ 1 \ \ \ \ \ \ F \ J \ - PAS
T ` _
I/ � � \ �'°� ^ �\ �� \ \ \ I \ \ \ \ � \ems � � _ /
\ \ \ \ x 9. PLACE ALL SILT FENCE AND STONE OUTLETS DOWN SLOPE OF ALL PROPOSED BERMS.
N J \ so I =\� \ \ \ \ / \ /� \ \ �00' ISSUED FOR:
\\\ \ \ \ i� \ \ ( I 1 \ \� � I \\ _� / �-5]x 0 10. BEGIN GRADING THE INITIAL MINE AREA,MOVE AND PLACE MATERIAL FOR BERMS. PLACE AND REVIEW
J / p / / \ \\ \ / \ I \ C `_ -, �- F COMPACT MATERIAL FOR PLANT AND STOCKPILE AREA. ALL BERMS SHALL BE CONSTRUCTED AND
ot-
F �\ STABILIZED WITHIN 1 YEAR OF STARTING MINING ACTIVITIES. DATE:
- �, \ \\ \ \ \ - J / / I I x \ v� 9/24/18
E \ ( / �- � \ C � / -� (n �/ 11. CONSTRUCT TAILINGS PONDS BEFORE MINING OPERATION BEINGS.
Cn
DRAWING NAME:
/ G-) \\ l \ \\\� / / / / / _-� �\ \ \ 12. SEED AND MULCH ALL AREAS THAT ARE NOT COVERED WITH ASPHALT OR STONE.
13. STABILIZE ALL CHANNELS AND SLOPES WITH MATTING AS NOTED ON THE PLANS.N
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/ I �'�- ., \ °��\ \ - \ 0 ����� OVERALL
M �� i STORM DESIGN IS BASED ON I=6.37 INCHES/HOUR FOR TIME OF CONCENTRATION(TOC)=9.19 Minutes for 54 Culvert \ 6s \ \ j \ \ �� \\ \
STORMWATER SEWER CALCULATIONS AND DESIGN TABLE _ \ - \ SEDIMENTATION
&
o ) I STORM RETURN PERIOD:25 YR.for 54"Culvert,10 Yr for entrance pipe at Clark Road TOC=5 Minutes \ \ \ \ \ \\ °�F 'o
Py���t1 `��/ TYPE INLET INLET TOTAL GRATE/ FROM TO APPROY_ PIPE D R� \ \ \ / \ \ \ ��r' _ EROSION CONTROL
cC Y \ �� GRATE AREA Q AREA I C Q RIM/ INV. INV. LENGTH SLOPE N D(THEO.) SIZE PIPE \ �� \ 0, \ \ \ \ 9J;' PLAN
RIM FROM TO (Ac.) CFS (Ac.) (in/hr) CFS THROAT (ft) (ft) 00 % (inches) (inches) MATERIAL I
\ � \ , \
C.D •� �N� ( / ��\ � � N/A EW 1 EW 2 61.07 80.61 61.070 6.37 0.33 128.38 N/A 595.52 593.57 80.00 2.44 0.013 38.90 54 RCP
'^ I \ N/A FES 1 FES 2 7.91 9.49 7.910 7.04 0.30 16.71 N/A 612.59 611.79 80.00 1.00 0.013 21.40 24 RCP < \� +� /
N � � I I� DRAWING NUMBER:
REINFORCED CONCRETE PIPE(RCP)TO BE CLASS III,O-RING JOINTS(WATERTIGHT)ASTM C443; PIPE INSTALLATION ASTM C1479 \ �� ,y / 1 \ / J I \\ \
> C c o ENDWALLS(EW)TO BE NCDOT STD.838.21 \boy
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_ STO E OUTLET _ _ _ _ _ _ _ , LaBeLLa
\ I (TYP. / i SKIMMER BASIN #4
� SKIMMER BASIN #2 D\ / / / Powered by partnership.
/ J SKIMMER BASIN
#1 I / \ POROUS /
BAFF 570 I SKIMt�FIR
0 7- KIMMIER psi- -x- -x�x�x x- x-SKIMMER BASIN #3 /
(TYP.) x,x x /
/ 14 / / 615 St. George Square
I SEDIMENTEMT \\ \ _ 574 /- / i / / Suite 300
FENCE I k O -
I I 575 / U.
POROUS / / Winston Salem , NC 27103
1 / �P 336-842-4065
I I I POROUS k 1 I I \ k 10 WEIR o / / (TYPI SEDIMENT-'
BAFFLES / I \ \\X / / \ FE�PE C#0 4 3 0
(TYP.) \ I I I \ \��x\k \ \ / IabeIIapc.com
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PORN S OMM STO OUTLET
\ \ FLO ITA NG u� I I \k I BAF LES I (TYP-.)
SKIMMER SKIMMER BASIN#2 \ \ \ \k / SKIMMER BASIN#3 / / (TY ) SKIMMER BASIN#4 0 /
SKIMMER BASIN#1 BOTTOM BASIN ELEVATION:609.00 + \
BOTTOM BASIN ELEVATION:564.00 \ I \ \ BOTTOM BASIN ELEVATION: 00 _ - BOTTOM BASIN ELEVATION:572.00 N , T T
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WATER LEVEL ELEVATION:567.50 WATER LEVEL ELEVATION:574.574.50 � WATER LEVEL ELEVATION:575.50 WATER LEVEL ELEVATION:612.50
TOP DAM ELEVATION:569.00 - - k / I TOP DAM ELEVATION:576.00 TOP DAM ELEVATION:577.0\ / / TOP DAM ELEVATION:614.00 /
x
TOP DAM WIDTH:5' ` TOP DAM WIDTH:5' TOP DAM WIDTH:5'
TOP DAM WIDTH:5'
/ 1 \ I -� WEIR LENGTH:14'
WEIR LENGTH:10' WEIR LENGTH: R WEIR LENGTH:14'
2 � � 2 I MIN SURFACE AREA:4140 FT \ / 14' EIR
MIN SURFACE AREA:3114 FT2 \ I MIN SURFACE AREA:2779 FT �fv=50'
MIN SURFACE AREA:4622 FT
` 10 WEI \ \ MIN VOLUME:6246 FT3 -- MIN VOLUME:10386 FT3 MIN VOLUME:15" FT3
MIN VOLUME:7002 FT3 / �
ORIFICE DIA.:1.5" ` \ STO E OI�TL \ I ORIFICE DIA.:1.5" ORIFICE DIA.:1.75" I I t =50' ORIFICE SIZE:
1.5" 1"=50
SKIMMER SIZE:2" 7"=5� ems_ \ SKIMMER SIZE:2" SKIMMER SIZE:3" SKIMMER SIZE:4" O
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SKIMMER BASIN #5 o ENCE k\k`
-,� SKIMMER BASIN #6 / _
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6' SKIMMER SEDIMENT
8' WEIR 611 O _ FENCE
/ / / - \ ` \
/ SKIMMER DIM T
_ / F CE SKIMMER BASIN#6 / FLOATING FLOATING _ 670 SKIMMER BASIN#8
SKIMMER BASIN#5 SKIMMER BASIN#7 SKIMMER _
/ ` BOTTOM BASIN ELEVATION:604.00 SKIMMER BOTTOM BASIN ELEVATION:604.00 -BOTTOM BASIN ELEVATION:607.00
BOTTOM BASIN ELEVATION:597.00 WATER LEVEL ELEVATION:607.50 / WATER LEVEL ELEVATION:607.50 WATER LEVEL ELEVATION:610.50
WATER LEVEL ELEVATION:600.50 x / $ \ TOP DAM ELEVATION:611.00
TOP DAM ELEVATION:602.00 � TOP DAM ELEVATION:609.00 TOP DAM ELEVATION:609.00
�TOI E OUTLET TOP DAM WIDTH:5' TOP DAM WIDTH:5' TOP DAM WIDTH:5'
TOP DAM WIDTH:5' i POROUS PO_RQUS WEIR LENGTH:8' c
WEIR LENGTH:6' (TYP.) � � WEIR LENGTH:6' WEIR LENGTH:8' � O 2016 LaBella Associates
�) 2 BAFFLES 2 BAFFLES '��MIN SURFACE AREA:2298 FT2
MIN SURFACE AREA:1690 FT2 _ _ _ _ _ � MIN SURFACE AREA:1800 FT MIN SURFACE AREA:2275 FT
MINSURFAC SURFACE
/ _ \ �BN MIN VOLUME:4079 FT' (TYP') MIN VOLUME:5461Fr' (n'P ) SKIMMER BAS MIN VOLUME:5166 FT'
ORIFICE VOLUME:
366 - - ORIFICE DIA.:1.25" ORIFICE DIA.:1.25"
SKIMMER SIZE:1.5" -1==�' -� , / / 1 SKIMMER SIZE:1.5" 1"=50' SKIMMER SIZE:3" 1 SKIMMER ORIFICE ISIZE:25
_ ALAMAN C E
- - SKIMMER BASIN #12 7-p FLOATING \ TAILING POND #2 F�'ATHV�_ TONE LET
I \ x V I �/ I / SKIMMER \ / BOTTOM 84'569' _ SKIMMER -\�Pa AGGREGATES, LLC
ISTONE OUTLET \ �/
(SKIMMER BASIN #10 I - _ (TYP )
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I SEDIMENT
12' WEIR - \ / ' FENCE
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\ SKIMMER \ \ \ \ \
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4' WEIR POROUS \ / \ \POROU'S \ \ SOUS
x -Tp BA FLES BAFFLE / BAFFLE WEIR
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x SKIM SEDIMENT \ SEDIMENT
\ FENCE( FENCE \ 598 \
\ I \TONE TONE OU `� 8 W \
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\ (TY )
SKIMMER BASIN#13 SKIMMER BASIN#12 SKIMMER BASIN#11
BOTTOM BASIN ELEVATION:592.00 1"=50' BOTTOM BASIN ELEVATION:574.00 1"=50' BOTTOM BASIN ELEVATION:588.50 1"=50'
\ " / WATER LEVEL ELEVATION:595.50 WATER LEVEL ELEVATION:577.50 WATER LEVEL ELEVATION:592.00
J TOP DAM ELEVATION:597.00 TOP DAM ELEVATION:579.00 TOP DAM ELEVATION:604.00
TOP DAM WIDTH:12' TOP DAM WIDTH:5'
TOP DAM WIDTH:5'
WEIR LENGTH:12' WEIR LENGTH:8' WEIR LENGTH:8'
SKIMMER BASIN#10 MIN SURFACE AREA:3735 FT2 MIN SURFACE AREA:2079 FT2 MIN SURFACE AREA:7500 FT2
BOTTOM BASIN ELEVATION:590.00 MIN VOLUME:9787 FT3 MIN VOLUME:4887 FT3 MIN VOLUME:21116 FT3 AI a m a n ce County Mine
WATER LEVEL ELEVATION:593.50 ORIFICE DIA.:1.5" ORIFICE DIA.:1.25" ORIFICE DIA.:2"
TOP DAM ELEVATION:595.00 SKIMMER SIZE:2" SKIMMER SIZE:1.5" SKIMMER SIZE:5"
TOP DAM WIDTH:5'
WEIR LENGTH:4'
MIN SURFACE AREA:761 FT2
MIN VOLUME:1710 FT3
ORIFICE DIA.:0.75"
SKIMMER SIZE:2"
NO: DATE: DESCRIPTION:
REVISIONS
PROJECT NUMBER:
2180544
DRAWN BY:
KCG/ATC
REVIEWED BY: PAS
~v
ISSUED FOR:
REVIEW
DATE:
9/24/18
DRAWING NAME:
0
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/ PROPOSED Powered by partnership.
50 0 50 100 150 \200 ` / / / \ ) I I SHOP
too,--
1 = 100, \ \ / oz 615 St. George Square TYPICAL ENTRANCE ROAD SECTION � \ \ I
12' MIN NTS(TO BE HEAVY DUTY PAVEMENT \ \ \\ I �/ Suite 300
- 10" ABC STONE FROM CLARK RD. TO STA 20+00) \\ \\ \ \\ \ (� \ I / Winston-Salem , NC 27103
o / — \ \ \ \ '� I I �� / — — 336-842-4065
\\ l
x C#0430
SKIMMER BASIN 5 / ` `J IabeIIapc.com
/ / \ QJ } 6' 30' 6' 6' \ 1 \i
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EXIST. 12" RCP / 1.5" 5 9.5 B =/
BOTH ENDS BURIED / � ASPHALT „��
I INV. = 610.89
/ (BURIED) T
/ n F I
EXIST. 18" RCP I (
. I
INV. = 610.49---_-__ �- `mil
JJ II(BURIED) / INV.�= 610.89 I / 10" ABC STONE 2.5 I 19.0 B ASPHALT \ \ \ \ \1` \� \`I o+ o / / SKIMMER BASIN #4 �- `M`
/v SKIMMER BASIN #6;a— — I � % t
I I 1 00 �-
� � � o \
C ) — _ �
EX. EOP NV. = 611.79 I / N �\ G�\—I
/ ELEV. = 616.09 �k — On 1 \ ` rn \= D o/ \
/ ITl \ I ^? \ I NCDOT STEEL
10' X 70' \, k�o \ \
k � � / / � ,6 BEAM GUARDRAIL � \
SIGHT TRIANGLE ,x� 160 LF (5' OFF E.P.) \ \ \
ROCK PIPE k� I SE?/-FIC AF?�A
INTLET _ _ _
PROTECTION ?�
1
\_80' OF 2 RCP + 9+00
FES 101.0% a+oo 1.+00 +00 s+oo +o
jINV. = 612.59 N
SKIMMER BASIN #7
CROSS WALK ;0 5' SIDEWALK WITH ADA / / /
ACCESSIBLE RAMPS
ADA SIGNS REQUIRED FOR i�I / / I / / ` . / / / \
x ALL HANDICAP SPOTS
o a a a
/ � � / / / / / \ I I \ � \\ \ \, ©2016 LaBella Associates
TABLE 1 — CHANNEL DETAILS
CHANNEL DETAIL 1 CHANNEL DETAIL 2
NTs NTs DESCRIPTION CHANNEL DETAIL CURLEX TYPE I
REFERENCE I _ /
/ , / END 1 TO STA. 7+50 CHANNEL DETAIL 1 CURLEX TYPE I ALAMANCE
8' WIDTH OF CURLEX 8' WIDTH OF CURLEX END 2 TO STA. 8+25 CHANNEL DETAIL 1 CURLEX TYPE I I I I \
4b EXCELSIOR MATTING AS EXCELSIOR MATTING AS i 1 I � / AGGREGATES, LLC
\ / LISTED IN TABLE 1 OR LISTED IN TABLE 1 OR (WEST OF ROAD FROM STA. 15+00 TO 11+50 CHANNEL DETAIL 1 CURLEX TYPE I
APPROVED EQUIVALENT APPROVED EQUIVALENT FROM STA. 15+50 TO STA 8+00 AT EDGE OF
EASTERN-MOST PAVEMENT CHANNEL DETAIL 1 CURLEX TYPE I
/ 1 3 3 1 1 3 3 1 FROM ENDWALL #2 TO STA 15+00 CHANNEL DETAIL 2 CURLEX TYPE III
/ FROM ENDWALL 1 TO STA 15+50 CHANNEL DETAIL 2 CURLEX TYPE III /
/} I FROM ENDWALL 2 TO STA. 20+00 CHANNEL DETAIL 2 CURLEX TYPE I
FROM ENDWALL #1 TO STA. 20+00 CHANNEL DETAIL 2 CURLEX TYPE III
670 670
660 660
650IIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII650 Alamance County Mine
oil
640 640
630 630
ROP. ROAD C/L
ELEV.=615.82
kT STA. 0+23.10
O --
-2.00% `� 0) NO: DATE: DESCRIPTION:
o
620 + 620 REVISIONS
PROJECT NUMBER:
2180544
24" RCP DRAWN BY: KCG�ATC
6 1 0 6 1 0 REVIEWED BY:
PAS
N
EXIST. ROAD C/L EXIST. ROAD E.P. PROP. ROAD
= ELEV.=616.26 ELEV.= 616.03 ISSUED FOR: REVIEW
ELEV.=620.47
0- AT STA. 0+00.16 AT STA. 0+9.72 AT STA. 20+39.79
600 600 DATE:
9/24/18
DRAWING NAME:
3
CD
0
590 590
Ul
ENTRANCE ROAD
U
580 580 PLAN AND PROFILE
Y O
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r E N — � rM M) I- 00 — 0) rn N n O M 0 00 0) r) � r, (0 — (0 0 M N c0 N O 00 rM � 07 O c0 N I� M 0) O O N (`1 M (D c0 N L0 r7 N 00 N N a0 M I� 't N7 (O a0 N
o c° (D (0 I� � 00 00 O m N r7 4 u7 Lp O � op 00 O a) In Lo N � 4 03 � O (0 (0 O I� � r7 N O O 00 00 c0 O � r7 N N O N 0) O I� 00 � L0 � N 0) 0) (0 00 O 00 L0 00 O O 0) N L O (0 ") 00 I-
N Q N N N N N N N N N N (`1 N M N rrl r7 M r7 M r7 rrl r7 r7 r7 r7 M r7 rrl r7 rrl r7 N N N N N N N N N N N N O O O O O O O) O m rn O
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0 0_

LaBeLLa
,
LEGEND
Powered by
partnership.
R DRAINAGE AREA�q O� D � 02-13� 615 St. George SquarePDID1
\ Suite 300PROPOSED SKIMMER BASIN SK Winston-Salem , NC 27103
���// // \ \ ` I I 'l �� l °U \ ���( / / / \ ✓ :D \ \ 1 ( �r II - 336-842-4065
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PID: 102768
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:102 64OTHI�J U OON
4016
Alamance County Mine
�� / , // • / , / /// / , P1D:1o1 97 I/ , , ID. 102747
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1 I 1 I \ \ L A 73
� � N0: DATE: DESCRIPTION:
REVISIONS
>\ / / I l / / PROJECT NUMBER:
2180544
o��o I DRAWN BY:
-� KCG/ATC
\\ REVIEWED BY:
PI
D: 1�25-98\ PAS
\
ISSUED FOR:
REVIEW
HATS 0 CAM LLC \
�" \ \ \ �P URIEDi I \ \ 1 1 C ( \\ \PI 11 6 8 \ I / I I / DATE.
`��\ _ N \ / ) I I I \\\ A° LE 11B�R� I 9/24/18
c \ �� \ / ( 1 _ \ \ l \\� ���UBUREND
\\ \ ( \ \ \\\ -� l 1 ) \\ ,s �P ( \Q\ / \ I / DRAWING NAME:
o I l � \ � J \\ \\\�\ \ I /� �j�DR'�-// ��"q� _ � �/i/ �� � � /� � � � J/ll \ ✓ J / ( /� / \ l
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CHRIS KINSEY
AMANDA IVEY 0D U M/ 125 0 125 250 375 500'
0a } Nq�sRG / 1�� _ 250'
iC i6 �\ \ \\\\\�\\\ \ 1 1 ) l / / /// / I I \ I ( � / , /. l l� I \�' �r� \ , i i / // " I � \ \ \ \ \ _ � / I I I I � \\ �i/�/ � i " / /1A
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P\7 27 / \ \ Powered by partnership.
P \i \
615 St. George Square
/ / / _ � X I \ \ Suite 300
— — Winston-Salem, NC 27103
336-842-4065
/ � C#0430
R40 � k INV. = 610.89 � labellapc.com
R59 '
/ ♦ �X T
EXIST. 12 RCP ♦ �� I
R 50 BOTH ENDS BURIED ` \ FES 2 / �`P` `O`-
X _
\ INV. 611.79,E
II � 1 `J ♦ ♦ k\X
80' OF 24" RCP
59 I — ♦ Q
G
� / k '0'
FES 1 \ \
/ I 9 k I INV. = 612.59 \
INV. = 610.89,
/ (BURIED) k I \
32' / 8 ,. � EXIST. 18" RCP / \ \x61
- -
011
6'
_ INV.I = 610.49 \♦ ♦ \k \(BURIED)
R 2 0 k� C) ©2016 LaBella Associates
ALAMAN C E
EX. EOP \2. 4' ELEV. = 616.09
o \ AGGREGATES, LLC
/ I20 0 20/ 40 60 80ROCK PIPER62'
PROTECTION
\
/ / 1" = 40' \ PROTECTION
/ 10' X 70'
I / SIGHT TRIANGLE \ \
I �
�
R20, I
630 630
\ Alamance Count
\ � Y Mine
\— PROP. ROAD C/L
15 0 15 30 45 60 \ I ELEV.=615.82
i i i 1 i i
AT STA. 0+23.10
1" = 30' \ �
�I
—2.00%
EXIST. ROAD EP
ELEV.=616.09 620 620
1 327,
�$ AT STA. 0+09.72
I i
_I
� NCDOT STEEL �
BEAM GUARDRAIL N0. DATE: DESCRIPTION:
160 LF (5' OFF E.P.) \ —1.72% REVISIONS
PROJECT NUMBER:
2180544
ENDWALL #1 DRAWN BY:
INV. 595.52 KCG/ATC
= 2 R P
REVIEWED BY:
\ / 610 610 PAS
ISSUED FOR:
REVIEW
a ENDWALL #2 /
INV. = 593.97 �$ / DATE:
/ / 9/24/18
g / / DRAWING NAME:
c0 /
_ - PARKING, STREAM
_ _ CROSSING, AND
/ / _ 600 600 ENTRANCE ROAD DETAILS
n ao r rn 20 0 20 40 60 80
i — CO cO I� 00 a0 CD O
:: / / / — / CO CD CO CD CO CD CO iD CD
cad CD C's / /� ' / V. = 40'
00�2 z 00 HORIZONTAL 1" = 40'
M / _ / / / 0+00 1 +00 2+00 VERTICAL 1" = 4' DRAWING NUMBER:
o C 1 0 15 30 45 60
N Q
rn LO 1" = 30' \
ai oho
N Z
SKIMMER BASIN #6
/
C�
oa

LaBeLLa
Powered by partnership.
615 St. George Square
Suite 300
Winston-Salem, NC 27103
336-842-4065
C#0430
labellapc.com
NOTES: F
100 WIDTH 1. SKIMMER IS TO BE A SURFACE DEWATERING DEVICE �I `" • ` `O�
10' SUCH AS BMP SKIMMER OR APPROVED DEVICE. `` U .
TOP OF BERM
WATER SURFACE ELEVATION = 595 FT 2. SKIMMER SHOULD RISE TO LEVEL OF WEIR HEIGHT IN
ELEVATION = 594 FT TEMPORARY BASIN OR TO RISER INLET. r1 `r+•�`_
25 1i BorroM 1 5 VENT ORIFICE ACCESSIBLE K V
ELEVATION 3. ROPE ATTACHED TO SKIMMER TO HELP KEEP CLEAN. THROUGH DOOR
4. SIZING OF ORIFICE TO ALLOW FOR DEWATERING TIME `v0
TAILING POND #1 OF 24-72 HOURS.
10, 100' WIDTH
i�'� TOP OF BERM
WATER SURFACE ELEVATION = 591 FT
1lF ELEVATION 590 FT
2.5 BOTTOM
1 T
ELEVATION
TAILING POND #2
SCHEDULE 40 PVC
RIGID FLEXIBLE JOINT FLOAT
NOTE:
EACH TAILING POND SHALL HAVE A MINIMUM FREEBOARD OF RETRIEVAL ROPE
1.0 FEET AND SHALL HAVE DIMENSIONS AT THE SURFACE OF OUTLET END: CONNECTION
500 FEET LONG BY 100 FEET WIDE. TO OUTLET PIPE OR RISER
THE SLOPES OF THE OUTER SIDES OF THE TAILING PONDS
WILL VARY DEPENDING ON THE SURROUNDING SURFACE.
BARREL PIPE LONGER THAN SHOWN. ©2016 LaBeIIa Associates
NOT INCLUDED WITH SKIMMER SUPPLIED BY USER.
ALAMAN C E
AGGREGATES, LLC
s SKIMMER DETAIL
4 TAILING POND DETAIL C 401 NTS
C 401 NTS
BAFFLES WITH METAL T-POST, WOVEN WIRE NOTES:
5'-0$$ BAFFLES WITH METAL T-POST, FABRIC BACKING AND COIR FIBER NETTING 1. DRIVE STEEL FENCE POST AT LEAST 18 Alamance County Mine
RETRIEVAL SKIMMER WOVEN WIRE FABRIC BACKING
TOP ROPE INCHES INTO SOLID GROUND.
OF DAM AND COIR FIBER NETTING SEE BAFFLE DETAIL SSE
_ 2. WOOD POST ARE NOT ACCEPTABLE.
WEIR 18" _III-11111 1 1 (THIS SHEET) F�O��E�� 3. DIRECT WATER TO TOP OF BASIN USING
PROTECT WEIR WITH FILTER - BOTTOM ANCHORED N� STABILIZED DITCH, SLOPE DRAIN PIPE
11
FABRIC AND RIPRAP Z N =III- WITH STAPLES OR OTHER APPROVED METHOD.
FILTER FABRIC CL
o IIII�1 =
/ o M a 13 III
— — — — 4" OR 6" PVC 11 SKIMMER WITH RETRIEVAL ROPE
1I
11I i= -i ii i i=l I I1 11= _ I � z 111 111 111 I I 111 111 111 111 111 111 =_ - _I I1 =1I1=1I1=1I1=1 1I1=IIIIII=1I-III DAM
5�—A18" 1
6" STONE APRON I, 1 1 11 l 1 1 1 1 1 lIIIIIII ICI =III 1 SFp/M \\
III
WITH FILTER FABRIC LENGTH
/T
NOTES: SKIMMER BASIN CROSS SECTION
1. USE FOR DRAINAGE AREAS NOT EXCEEDING FIVE ACRES. BAFFLE DETAIL
2. EARTH BERM SHALL BE STABILIZED w/SEEDING ACCORDING TO O
TOWN SPECIFICATIONS.
LINE WEIR WITH RIPRAP N0: DATE: DESCRIPTION:
CORR FIBER MATTING.
TOP OF DAM TOP OF DAM REVISIONS
DESIGN OF SPILLWAYS - - - - - b - - - - - - - SECURE WITH NYLON 11
_ ZIP TIES. PROJECT NUMBER:
- - - - - =1 I I-1 I I-1 I I-1 I I-1 I I-1 I I-
1 - - - - - - - - - - - - - - - - - - WEIR
DRAINAGE AREA WEIR LENGTH _- - -==== WEIR =_____ _==_�IIIliilll-1
(ACRES) (FT) _ - LENGTH O 21 80J44
1 4.0 = _ -
2 MAX. III1I1I III1I l III =1I
IIIIIIIIIIIIII II111IIIIIIII -,II-III=III-III III= DITCH AND BURY 36"
2 6.0 FILTERIIIFABRICIIIII l l l -11=III=III=III=III=III=III=" STONE APRON MIN.
- - - - - - - - - - - - - - - - = FILTER FABRIC EDGE ZIP TIES DRAWN BY:
- - - - - - - - - - - - - - - - - WITH FILTER FABRIC
3 8.0 =1 =1 =1 =1 =1 =1 =1 =1 l l l
(MIN. 12" OF FABRIC)
4 10.0 TI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI IlI ITI l l l l KCG/ATC
5 12.0 =IIIII PVC IIII = REVIEWED BY:
_ = FLOW DIRECTION STAPLES PAS
1 -—III II PIPE�111=III=111111111111111
DIMENSIONS SHOWN ARE MINIMUM = =1II-I II-II '
-- 1IlI,I, I-III-'' GROUND ISSUED FOR:
WEIR CROSS SECTION -
�I 11II�IIIIIIIIIIIIIIIIIII�IIIIIIIIIIIIIII,I� Illlllllllll REVIEW
li 18»
MAINTENANCE DATE:
PERSPECTIVE VIEW WOVEN WIRE FABRIC. IN.
INSPECT TEMPORARY SKIMMER BASIN AND EMPTY SKIMMER OF ALL DEBRIS AFTER EACH PERIOD OF SIGNIFICANT RAINFALL. REMOVE SECURE WITH NYLON ZIP TIES. - _ 9/24/1 8
C/) SEDIMENT AND RESTORE BASIN TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN
DEPTH OF THE BASIN. PLACE THE SEDIMENT THAT IS REMOVED IN A DESIGNATED DISPOSAL AREA. REPAIR BAFFLES.
o CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT - r DRAWING NAME:
CD IS A MINIMUM OF 1.5 FEET BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT T-POST
o TO SLIGHTLY ABOVE DESIGN GRADE. ANY RIPRAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY.
• STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE THE SEDIMENT POOL AND DOWNSTREAM FROM THE BASIN IMMEDIATELY
°; AFTER CONSTRUCTION WITH SEEDING AND MATTING, AS NEEDED.
a
CO
U
SITE DETAIL
CD
C Q
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m �
Y O
c�
O �
C6 C
>,C-D
00 U
2 TEMPORARY SKIMMER BASIN 2 OF 2 1 TEMPORARY SKIMMER BASIN 1 OF 2 DRAWING NUMBER:
NTS NTS
C401 C 401
o
va N �
� Lo
ai C)C)
E C2
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LaBeLLa
Powered by partnership.
615 St. George Square
Suite 300
Winston-Salem, NC 27103
336-842-4065
C#0430
labellapc.com
T
�M� von
Q o�
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TRENCH WIDTH —
TRENCH
WIDTH
GRADE
HIGH TENSILE IMPERVIOUS =
GEOTEXTILE FABRIC Ld
III
EXISTING STREAM III J 0
IIII z Ld
DISCHARGE HOSE CHANNEL (DO NOT � III 18"=
ENERGY DISSIPATIONEXCAV CHANNATE EL OR
—III III
(RIP—RAP
SAN SANDBAGS) I I BANKS) IIII IIII IIIIII °° ° III° III
SUCTION HOSE SUITABLE FILL
FLOW SUMP = = (A (—AIII all ° IIII
HOLE i—I j I IIII — y
- I °
° ° UTILITY
4 12 IIIIII �I LINE ° II ° 6..
k` EXISTING STREAM ° VARIES) d
PROJECT CHANNEL III ° it° ` ° (DIAMETER °
° I
ANTI—SEEP COLLAR — ° ©2016 LaBella Associates
a
IMPERVIOUS � CROSS SECTION I II ° ° °
SEDIMENT a IMPERVIOUS TOP OF ° ° ° ° ,d
DIKE CLEAN BANK NOTES: = °°L III
DIKEWAT. =III z_ d ° ° °
1.PREPARE THE CHANNEL AND BANKS FOR INSTALLATION. a °
A. REMOVE ALL DEBRIS FROM STONE DIKE LOCATION. J a
B. REMOVE ALL SHARP ROCKS AND ROOTS TO AVOID III ° ° ° d PUNCTURES.
DEWATERING WORK z C. DO NOT EXCAVATE THE EXISTING CHANNEL OR BANKS. _j ANTI—SEEP COLLAR. 12„ L'DEVICE WORK
2. PLACE HIGH TENSILE IMPERIOUS FABRIC CENTERED OVER D CLASS B CONCRETE -III— ALA••M•AN C E
AREA N THE PROPOSED DIKE. USE ENOUGH FABRIC OVER THE DIKE
TO MAKE IT IMPERVIOUS. -
ogogog
BASE FLOW +1 3. ROLL FABRIC OVER THE STONE TO FORM THE DIKE. THE III AGGREGATES, L L C
ovovoe TOP LAYER IS ROLLED FROM THE UPSTREAM TO DOWNSTREAM SECTION A—A
NOTES: ovovoe DIRECTION.
1. ANCHOR ALL PUMPS AND PIPES SECURLEY.
4. INSPECT FOR LEAKS REGULARLY AND REMOVE DEBRIS. PLAN VIEW
2. WORK AREA SHALL NOT EXCEED THE AREA SECTION OF DIKE
THAT CAN BE COMPLETED IN ONE DAY.
5 BYPASS PUMPING DETAIL 4 IMPERVIOUS DIKE - STONE AND IMPERVIOUS FABRIC 3 ANTI-SEEP COLLAR
C 402 NTS
NTS �402
C 402 NTS
Alamance County Mine
°
RIPRAP APRON
°
A A
— � A A t
3 TIMES INNER
I.D. °
DIAMETER (I.D.) — —PIPE — FES PIPE FES
NOTES:
RIPRAP APRON 1 L = LENGTH OF THE RIPRAP APRON.
° ) i N0: DATE: DESCRIPTION:
2) L2 = RIPRAP TO BE INSTALLED UNDERNEATH 1/3 THE REVISIONS
PLAN VIEW LENGTH OF FLARED END SECTION (FES). PROJECT NUMBER:
3) d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT 2180544
PLAN VIEW LESS THAN 6 INCHES.
NOTES: DRAWN BY: KCG/ATC
4) IN A WELL—DEFINED CHANNEL EXTEND THE APRON UP THE
1) = LENGTH OF THE RIPRAP APRON. CHANNEL BANKS TO AN ELEVATION OF 18 INCHES ABOVE REVIEWED BY:
2) L2 = RIPRAP TO BE INSTALLED UNDERNEATH 1/3 THE THE MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE PAS
LENGTH OF FLARED END SECTION (FES). SEE NOTE 4 L1 BANK, WHICHEVER IS LESS.
Ll 3) d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT ISSUED FOR:
— � — — — LESS THAN 18 INCHES. _ � _ 5) A FILTER BLANKET OR FILTER FABRIC MUST BE INSTALLED REVIEW
4) A FILTER BLANKET OR FILTER FABRIC MUST BE INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
PIPE BETWEEN THE RIPRAP AND SOIL FOUNDATION. PIPE DATE:
FES ��a FES �
�° 9/24/18
"' 1 1 __ ° " DRAWING NAME:
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C 402 NTS C 402 NTS DRAWING NUMBER:
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PARKING SPACE PAVEMENT MARKINGS
615 St. George Square
SIGNAGE—�
(MUST NOT OBSTRUCT Suite 300
ACCESSIBLE ROUTE) ACCESSIBLE ROUTE Winston-Salem, NC 27103
(SEE NOTE 2) 336-842-4065
D RECTIONSLOPE ACROSS THE C#0 4 3 0
o� HI-VISIB:[LITY CROSSWALK STANDARD CROSSWALKI z SHOWN PARKING/UNLOADING SPACES.
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D C O 0 STOPBAR Z it=V NOTE OUT OF EVERY
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=COp O SIDEWALK 4' MIN. 6' MIN. 8" WHITE Q z H ACCESSIBLE, PER
-0 r- TO PEDESTRIAN CROSSWALK LINES ~= Lu VAN VAN SECTION 1106.5 OF
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CROSSWALK CROSSWALK NC STATE BUILDING
ACCESSIBLE ACCESSIBLE
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1. A GROOVE JOINT 1" DEEP WITH 1/8" RADII SHALL BE REQUIRED IN THE CONCRETE
SIDEWALK AT 5' INTERVALS. ONE 1/2" EXPANSION JOINT WILL BE REQUIRED AT 11 0�
CD
SIDEWALK • 4- INTERVALS OF NOT MORE THAN 45' AND MATCHING EXPANSION/CONSTRUCTION JOINT IN VAN R7TSP NO RESERVED
• ADJACENT CURB. A SEALED 1/2" EXPANSION JOINT WILL BE REQUIRED WHERE THE ACCESSIBLE 12 x6 MUTCD
4 X a ____ `8 ° SIDEWALK JOINS ANY RIGID STRUCTURE. 12"x18" PARKING
2a" WHITE 4' a MUTCD
Z CLEAR SPACE CROSSWALK LINE o 4 2. SIDEWALK AT DRIVEWAY ENTRANCES TO BE 6" THICK. PARKING R7-8
24" GAP CURB RAMPS LL y �°a , ° �A < ' ° • 3. WIDTH OF SIDEWALK ON THOROUGHFARE STREETS SHALL BE A MINIMUM OF 6'. WIDTH RESERVED MurcO ANY ,2 x,8
my a z J • <a ° p< OF SIDEWALKS IN THE CENTRAL BUSINESS DISTRICT WILL BE DETERMINED BY THE CDOT. PARKING R7-$
m m = N Q a ° 4. WIDTH OF SIDEWALKS ON NON—THOROUGHFARE STREETS SHALL BE BASED ON TYPICAL 12"x18" TIME
� RC cn 4' x a' < STREET SECTION, A MINIMUM OF 5'. SIDEWALK TO BE POURED TO END OF RADIUS AT T
'-' Z Z CLEAR SPACE Cr a INTERSECTING STREETS.
z —I O o g v GROOVE JOINT I N SIDEWALK 5. CONCRETE COMPRESSIVE STRENGTH SHALL BE 3600 PSI. IN 28 DAYS. OPTIONAL E MAXIMUM
D 2 6. ZONING CONDITIONS MAY REQUIRE ADDITIONAL WIDTH SIDEWALKS WHICH SHALL PENALTY CLDSM 50.10C
Q Z LOADING $250 12"x9"
3 v 10' MIN. WIDTH o H SUPERSEDE THESE STANDARD DIMENSIONS SHOWN. ZONE SIGN
O a z Z H 7. LIDS FOR JUNCTION BOXES AND UTILITY VAULTS SHALL BE NON—SKID AS SPECIFIED BY
O y F_ W x MAXIMUM
coy U) N F_ ENGINEER. PENALTY CLDSM 50.10C
D Z _ LU w 8. JOINT MATERIALS SHALL LIMIT SHRINK/SWELL SO POST CONSTRUCTION INSTALLATION $25O 12"xs"
,� Z 1- THE MINIMUM WIDTH OF STANDARD CROSSWALKS IS 6 FEET. THE MINIMUM WIDTH OF HI-VISIBILITY CROSSWALKS IS 10 FEET. LEGEND Q UJ 1/8" RADIUS RESULTS IN A MAXIMUM OF 1/4" FROM FLUSH. °'�°-"•° SEE STANDARD NO. 50.10C FOR
coN O J � r2 SUPPLEMETAL SIGN DETAIL
-n 2- SET BACK DISTANCE FROM INSIDE CROSSWALK MARKING TO NEAREST EDGE OF TRAVEL IS 4' MIN. « DIRECTION OF 0
0TRAFFIC FLOW w EXAMPLE SIDEWALK CONSTRUCTION DIMENSIONS:
3- BEYOND THE CURB FACE, A CLEAR SPACE OF 4' X 4' FEET MINIMUM SHALL BE PROVIDED WITHIN THE WIDTH OF THE CROSSWALK. CURB RAMP WITH
I.I\ DETECTABLE A n ` ° • 1/8" TO 1/4"
4- PLACE STOP BARS A MINIMUM OF 4 FEET FROM NEAREST CROSSWALK LINE. STOP BARS AT SIGNALIZED INTERSECTIONS SHOULD WARNING DOMES ! WIDTH RISE CROSS—SLOPE
BE COORDINATED WITH THE SIGNAL DESIGN SECTION OR AS DIRECTED BY THE ENGINEER. r . • 4' i" 1.56%
5- CURB RAMPS SHALL BE CONSTRUCTED IN ACCORDANCE TO THE LATEST NCDOT ROADWAY STANDARD DRAWINGS. a F 5' 1" 1.56%
8' 1— " 1.56% NOTES:
©2016 LaBella Associates
HEET 1 OF 1 SHEET 1 OF 1 a ' ° ' ' 1/2" EXPANSION JOINT 1. ALL 12"x18" ACCESSIBLE SIGNS SHALL BE MOUNTED AT 7 FEET FROM GRADE
1 ZO5"O711205.071 ° TO BOTTOM EDGE OF SIGN FACE (MUTCD). MOUNTING HEIGHT CAN BE REDUCED
�� n TO 5 FEET IF PLACED IN AN AREA BETWEEN SIDEWALK AND BUILDING FACE IN
H
WHICH PEDESTRIANS ARE NOT EXPECTED TO USE.
JOINT FILLER o 1.50% (2.00% MAX.)
�� 2. IF ACCESSIBLE ROUTE IS A RAISED SIDEWALK AREA, THEN RAMPS ARE REQUIRED
1/2" �� AT LOADING ZONE AREA. MAINTAIN MIN. 4' WIDE CONTINUOUS PASSAGE.
TRANSVERSE EXPANSION PROPOSED CURB & GUTTER 3. VERTICAL CLEARANCE FOR VANS MUST BE GREATER THAN 98-INCHES. ALAMANCE
6 CROSSWALK DETAIL JOINT IN SIDEWALK 4 DTHIS DETAIL IS TO ESIGN; PROVIDE GENERAL GUIDANCE FOR
PARKING LAYOUT REFER TO MANUAL ONUNFORMTRAFFICCONTROLDEVCES (MUTCD)
C403 NTS PROPOSED 4" CONCRETE SIDEWALK U.S. DEPARTMENT OF TRANSPORTATION AND NORTH DEPARTMENT OF AGGREGATES, LLC
TRANSPORTATION SUPPLEMENT AND NC BUILDING CODEDE FOR FOR ADDITIONAL
DETAILS SHOWING EXPANSION JOINTS INFORMATION.
IN CONCRETE SIDEWALK
4 ACCESSIBLE PARKING AND SIGNAGE DETAILS
C 403 NTs
5 SIDEWALK DETAIL
C 403 NTs
SWALE
2'
2.5' 30.0' 4' MIN
TOP OF BERM
m q
NOTES: �� Alamance County Mine
25
LARGE TREES SHALL BE 2" CALIPER AND 12' HEIGHT H STABILIZE ROAD SIDE DITCHES
AT PLANTING, BALLED AND BURLAP. TREES SHALL BE DOUBLE-STAGGERED WITH 8-10' CENTERS 12"CRUSHER RUN OR WITH 8'WIDTH CURLEX III HIGH
z SMALL TREES SHALL BE 2" CALIPER AND 10' H CABC STONE VELOCITY MATTING OR
O AT PLANTING, BALLED AND BURLAP APPROVED EQUIVALENT.
LU LARGE SHRUBS SHALL BE 3 GALLON, 36" H AT PLANTING
cn a
2 SEED THE ENTIRE BERM AFTER TREE AND SHRUB PLANTING WITH PANICUM VIRGATUM, SWITCH
Cr
LLU GRASS, AT A RATE OF 8 LBS/ACRE. DO NOT MOW.
m
o SEE TABLE BELOW FOR ALLOWABLE TREES AND SHRUBS.
LO0 r 3 HAUL ROAD TYP. SECTION
0
C 403 NTs
LARGE TREE Small Tree Large Shrub
Scientific Name Common Name Scientific Name Common Name Scientific Name Common Name
LARGE TREE
Pinus Taeda Loblolly Pine Cercis Canadensis Redbud Ilex Vomitoria Yaupon Holly
Chionanthus Virgincus Fringetree Leucothoe Populifolia Florida Leucothoe
NO: DATE: DESCRIPTION:
16'WIDE 2:1 SLOPE- 16'WIDE 2:1 SLOPE- Ilex opaca American Holly Myrica Cerifera Wax Myrtle REVISIONS
8'HIGH AT TOP 18'BERM TOP 8'HIGH AT TOP PROJECT NUMBER:
2180544
DRAWN BY:
KCG/ATC
PULL POST SINGLE STRAND
MINE SIDE ASSEMBLY BARBED WIRE REVIEWED BY:
ROAD/ADJACENT SIDE PAS
10, - "T" POST (100' INCREMENT) 8 D A° 10' - "T" POST
(20' INCREMENT) POST
ISSUED FOR:
REVIEW
-p SIDE SLOPES 2H:1V
8.0' DATE:
L Opp
9/24/18
CIO
2.0' DRAWING NAME:
� a' MIN GRADE 2' BURIED
(TYP)
Cl) OVERBURDEN SOIL CUT
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LaBeLLa
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615 St. George Square
Suite 300
SEEDING Winston-Salem , NC 27103
SOIL AND VEGETATION 336-842-4065
PREPARE SEEDBED BY RIPPING,CHISELING,HARROWING OR PLOWING TO DEPTH OF SIX INCHES SO AS TO PRODUCE A LOSE,FRIABLE SURFACE.REMOVE C#0 4 3 0
ALL STONES,BOULDERS,STUMPS OR DEBRIS FROM THE SURFACE WHICH WOULD PROHIBIT GERMINATION OR PLANT GROWTH. l a b e I l a p c.c o m
INCORPORATE INTO THE SOIL 800 TO 1,000 POUNDS OF 10-10-10 FERTILIZER PLUS 500 POUNDS OF TWENTY PERCENT(20%)SUPERPHOSPHATE PER ACRE 1. l� l�
AND TWO TONS OF DOLOMITIC LIME PER ACRE UNLESS SOIL TESTS INDICATE THAT A LOWER RATE OF LIME CAN BE USED.
PQ MULCH AFTER SEEDING WITH 1.5 TONS OF GRAIN STRAW PER ACRE.
PERMANENT SEEDINGS T
/ PLANTS MIXTURE PLANTING RATE/ACRE PLANTING DATES
o° o 1001yl/ TALL FESCUE 00-150 LBS. AUG.15- 15
(LOW MAINTENANCE) FEB.15-MA MAY 1
O O ° O ° ° O O TALL FESCUE 200-250 LBS. AUG.15-OCT.15
WATERWAYS AND LAWNS(HIGH MAINT.) FEB.15-MAY 1
8"MIN g g O BLEND OF TWO TURFTYPE 200-250 LBS. AUG.15-OCT.15
o� o TALL RESCUES(90%)AND TWO OF MORE FEB.15-MAY 1 ♦O V'
o IMPROVED K Y BLUEGRASS O`
2"-3"COARSE
VARIETIES(10%)0%)(HIGH MAINTENANCE)
AGGREGATE TALL FESCUE 100 LBS. AUG.15-OCT.15
(SURGE STONE) 12'MIN
A$ AND KOBE OR KOREAN LESPEDEZA 20-25 LBS. FEB.15-MAY 1
REQUIRED (SEE NOTE 1 BELOW)
TALL FESCUE 50 LBS. NOV.1-FEB.1
SERICEA LESPEDEZA 60 LBS./ACRE (UNSCARIFIED)
CONSTRUCTION SPECIFICATIONS:
TALL FESCUE AND 60 LBS. JULY AND AUGUST
1. CLEAR THE ENTRANCE AND EXIT AREA OF ALL VEGETATION,ROOTS,AND OTHER OBJECTIONABLE GERMAN MILLET OR SUDANGRASS AND 30 LBS.
MATERIAL AND PROPERLY GRADE IT. (SEE NOTE 2 BELOW) T
2 SMOOTH PLACE E GRAVEL TO THE SPECIFIC GRADE AND DIMENSIONS SHOWN ON THE PLANS AND TALL FESCUE 70 LBS. NOV.I,IAN.30 I
3.PROVIDE DRAINAGE TO CARRY WATER TO A SEDIMENT TRAP OR OTHER SUTIABLE OUTLET. AND RYEGRAIN AND 25 LBS.
4. USE NONWOVEN GEOTEXTILE FABRICS BECAUSE THEY IMPROVE STABILITY OF THE FOUNDATION IN LOCATIONS (SEE NOTE 2 BELOW)
SUBJECT TO SEEPAGE OR HIGH WATER TABLE.
COMMON BERMUDAGRASS 8 LBS.(HULLED) APR.15-JUNE 30
MAINTENANCE: AND KOBE OR KOREAN LESPEDEZA 15-2 LBS.(UNHULLED) FEB.1-MAY 30
(SEE NOTE 1 BELOW)
MAINTAIN THE GRAVEL PAD IN A CONDITION TO PREVENT MUD OR SEDIMENT FROM LEAVING THE
CONSTRUCTION SITE.THIS MAY REQUIRE PERIODIC TOP DRESSING WITH 2-INCH STONE.AFTER EACH (1) FOR SPRING SEEDINGS,USE SCARIFIED LESPEDEZA SEED.FOR LATE FALL AND WINTER SEEDINGS,USE UNSCARIFIED SEEDS.
RAINFALL,INSPECT ANY STRUCTURE USED TO TRAP SEDIMENT AND CLEAN IT OUT AS NECESSARY. (2) ANNUALS SUCH AS MILLET,SUNDANGRASS AND RYEGRAIN MUST BE KEPT AT 10-12"MAXIMUM HEIGHT.
IMMEDIATELY REMOVE ALL OBJECTIONABLE MATERIAL SPILLED,WASHED OR TRACKED ONTO PUBLIC
ROADWAYS.
10 TEMPORARY CONSTRUCTION ENTRANCE s SEEDING SCHEDULE L 1
C501 C501
©2016 LaBella Associates
DEWATERING CONCRETE
BLOCK
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IN CHANNELS,ROLL OUT STRIPS OF NETTING PARALLEL TO THE PLAN `og o ° o o'o _- PAN MATCH WIDTH OF
DIRECTION OF FLOW AND OVER THE PROTECTIVE MULCH 0. ^O'o 000 %oo
39°oap°o°.'0:8 0=09°°0 oo°.oe8;dg800°a°oo. o SEDIMENT TRAP
OUTLET WEIR
TIE INTO SEDIMENT
TRAP OUTLET WEIR
La 6"DIA.RIPRAP
APRON LENGTH NONWOVEN EXTRA STRENGTH PER US FABRICS OR APPROVED EQUIVALENT (US 205 NW) 2:1SLOPE, 10'
GRAVEL FILTER
TEMPORARY WASHED WIRE SCREEN O O O 00°00 000 Oo
OVERLAP SEDIMENT STONE /
POOL WIRE SCREEN7�1 1
JOIN STRIPS BY ANCHORING ANCHOR METTING IN I -I -III-III-I -I I-I I-I SECTION A-A
AND OVERLAPPING V MIN. °
A 6INCH TRENCH. - - 2'MAX. °. 16"
APRON -- _
THICKNESS
INSTALLATION OF NETTING AND MATTING: SECTION A-A
CONSTRUCTION SPECIFICATIONS
PRODUCTS DESIGNED TO CONTROL EROSION SHOULD BE INSTALLED
IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS.ANY MAT CONSTRUCTION SPECIFICATIONS: SEDIMENT DROP INLET 1.ENSURE THAT THE SUBGRADE FOR THE RIPRAP FOLLOWS THE REQUIRED LINES AND
OF BLANKET-TYPE PRODUCT USED AS A PROTECTIVE MULCH SHOULD 1. ENSURE THAT THE SUBGRADE FOR THE FILTER AND RIPRAP FOLLOWS THE REQUIRED LINES AND GRADES WITH GRATE GRADES SHOWN IN THE PLAN. COMPACT ANY FILL REQUIRED IN THE SUBGRADE TO
PROVIDE COVER OF AT LEAST 30%OF THE SURFACE WHERE IT IS APPLIED. SHOWN IN THE PLAN.COMPACT ANY FILL REQUIRED IN THE SUBGRADE TO THE DENSITY OF THE THE DENSITY OF THE SURROUNDING UNDISTURBED MATERIAL. LOW AREAS IN THE
SURROUNDING UNDISTURBED MATERIAL.LOW AREAS IN THE SUBGRADE ON UNDISTURBED SOIL MAY SECTION SUBGRADE ON UNDISTURBED SOIL MAY ALSO BE FILLED BY INCREASING THE RIPRAP
ALSO BE FILLED BY INCREASING THE RIPRAP THICKNESS. THICKNESS.
CONSTRUCTION SPECIFICATIONS: 2. RIPRAP MAY BE PLACED BY EQUIPMENT.
1.APPLY LIME,FERTILIZER AND SEED BEFORE LAYING THE NET OR MAT. 2.THE RIPRAP AND GRAVEL FILTER MUST CONFORM TO THE SPECIFIED GRADING LIMITS SHOWN ON THE 1.LAY ONE BLOCK ON EACH SIDE OF THE STRUCTURE ON ITS SIDE IN THE BOTTOM ROW TO ALLOW POOL 3.THE MINIMUM THICKNESS OF THE RIPRAP SHOULD BE 1.5 TIMES THE MAXIMUM STONE
IF OPEN-WEAVE NETTING IS USED,LIME MAY BE INCORPORATED BEFORE PLANS. DRAINAGE.THE FOUNDATION SHOULD BE EXCAVATED AT LEAST 2-INCHES BELOW THE CREST OF THE DIAMETER.
INSTALLING THE NET AND FERTILIZER AND SEED SPRAYED ON AFTERWARD. 3.FILTER CLOTH,WHEN USED,MUST MEET DESIGN REQUIREMENTS AND BE PROPERLY PROTECTED FROM STORM DRAIN.PLACE THE BOTTOM ROW OF BLOCKS AGAINST THE EDGE OF THE STORM DRAIN FOR 4.RIPRAP MAY BE FIELD STONE OR ROUGH QUARRY STONE. IT SHOULD BE HARD,
2.START LAYING THE NET FROM THE TOP OF THE CHANNEL OR SLOPE AND PUNCHING OR TEARING DURING INSTALLATION.REPAIR ANY DAMAGE REMOVING THE RIPRAP LATERAL SUPPORT AND TO AVOID WASHOUTS WHEN OVERFLOW OCCURS. IF NEEDED,GIVE LATERAL ANGULAR,HIGHLY WEATHER-RESISTANT AND WELL GRADED.
JOINTS SHOULD OVERLAP A MINIMUM OF 1 FT. IF THE DAMAGE IS EXTENSIVE,REPLACE THE ENTIRE
UNROLL IT DOWN THE GRADE.ALLOW NETTING TO LAY LOOSELY ON THE AND PLACING ANOTHER PIECE FILTER CLOTH OVER THE DAMAGED AREA.ALL CONNECTING SUPPORT TO SUBSEQUENT ROWS BY PLACING 2"x 4"WOOD STUDSTHROUGH BLOCK OPENINGS. 5. CONSTRUCT THE APRON ON ZERO GRADE WITH NO OVERFALL AT THE END.MAKE THE
SOIL BUT WITHOUT WRINKLES-DO NOT STRETCH. TOP OF THE RIPRAP AT THE DOWNSTREAM END LEVEL WITH THE RECEIVING AREA OR
FILTER CLOTH. 2. CAREFULLY FIT HARDWARE CLOTH OR COMPARABLE WIRE MESH WITH 2"INCH OPENINGS OVER ALL SLIGHTLY BELOW IT.
3.TO SECURE THE NET,BURY THE UPSLOPE END IN A SLOT OR TRENCH NO LESS
4. RIPRAP MAY BE PLACED BY EQUIPMENT,BUT TAKE CARET AVOID DAMAGING THE FILTER. BLOCK OPENINGS TO HOLD GRAVEL IN PLACE. 6. ENSURE THAT THE APRON IS PROPERLY ALIGNED WITH THE RECEIVING STREAM AND
THAN 6-INCHES DEEP,COVER WITH SOIL,AND TAMP FIRMLY AS SHOWN IN 5.THE MINIMUM THICKNESS OF THE RIPRAP SHOULD BE 1.5 TIMES THE MAXIMUM STONE DIAMETER. 3 '/
THIS DETAIL. STAPLE THE NET EVERY 12-INCHES ACROSS THE TOP END AND 3. USE CLEAN GRAVEL, Y4-TO'2-INCH IN DIAMETER,PLACED 2 INCHES BELOW THE TOP OF THE BLOCK PREFERABLE STRAIGHT THROUGHOUT ITS LENGTH. IF A CURVE IS NEEDED TO FIT SITE
AN EVERY 3-FEET AROUND THE EDGES AND BOTTOM.WHERE 2 STRIPS OF 6.RIPRAP MAYBE FIELD STONE OR ROUGH QUARRY STONE. IT SHOULD BE HARD,ANGULAR,HIGHLY ON A 2:1 SLOPE OR FLATTER AND SMOOTH IT TO AN EVEN GRADE. DOT#57 WASHED STONE IS CONDITIONS,PLACE IT IN THE UPPER SECTION OF THE APRON.
NET ARE LAID SIDE BY SIDE,THE ADJACENT EDGES SHOULD BE OVERLAPPED WEATHER-RESISTANT AND WELL GRADED. RECOMMENDED. 7. IMMEDIATELY AFTER CONSTRUCTION,STABILIZE ALL DISTURBED AREAS WITH VEGETATION.
3-INCHES STAPLED TOGETHER.EACH STRIP OF NETTING SHOULD ALSO BE 7.CONSTRUCT THE APRON ON ZERO GRADE WITH NO OVERFILL AT THE END.MAKE THE TOP OF THE A I a m a n c e County Mine
STAPLED DOWN THE CENTER,EVERY 3 FT.DO NOT STRETCH THE NET WHEN RIPRAP AT THE DOWNSTREAM END LEVEL WITH THE RECEIVING AREA OR SLIGHTLY BELOW IT. MAINTENANCE:
APPLYING STAPLES. 8.ENSURE THAT THE APRON IS PROPERLY ALIGNED WITH THE RECEIVING STREAM AND PREFERABLE 1. INSPECT THE BARRIER AFTER EACH RAIN AND MAKE REPAIRS AS NEEDED.
STRAIGHT THROUGHOUT ITS LENGTH. IF A CURVE IS NEEDED TO FIT SITE CONDITIONS,PLACE IT IN THE 2. REMOVE SEDIMENT AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR SUBSEQUENT MAINTENANCE
MAINTENANCE: UPPER SECTION OF THE APRON. RAINS.
9. IMMEDIATELY AFTER CONSTRUCTION,STABILIZE ALL DISTURBED AREAS WITH VEGETATION. INSPECT RIPRAP OUTLET STRUCTURES AFTER HEAVY RAINS TO SEE IF ANY EROSION
INSPECT ALL MULCHES PERIODICALLY,AND AFTER RAINSTORMS TO CHECK MAINTENANCE 3.WHEN THE CONTRIBUTING DRAINAGE AREA HAS BEEN ADEQUATELY STABILIZED,REMOVE ALL AROUND OR BELOW THE RIPRAP HAS TAKEN PLACE OR IF STONES HAVE BEEN
:
FOR RILL EROSION,DISLOCATION,OR FAILURE.WHERE EROSION IS OBSERVED, MATERIALS AND ANY UNSTABLE SOIL AND EITHER SALVAGE OR DISPOSE OF IT PROPERLY. BRING DISLODGED. IMMEDIATELY MAKE ALL NEEDED REPAIRS TO PREVENT FURTHER
APPLY ADDITIONAL MULCH. IF WASHOUT OCCURS,REPAIR THE SLOPE GRADE, INSPECT RIPRAP OUTLET STRUCTURES AFTER HEAVY RAINS TO SEE IF ANY EROSION AROUND OR BELOW THE DISTURBED AREA TO PROPER GRADE,THEN SMOOTH AND COMPACT IT.APPROPRIATELY DAMAGE.
RESEED,AND REINSTALL MULCH. CONTINUE INSPECTIONS UNTIL VEGETATION THE RIPRAP HAS TAKEN PLACE OR IF STONES HAVE BEEN DISLODGED. IMMEDIATELY MAKE ALL NEEDED STABILIZE ALL BARE AREAS AROUND THE INLET.
IS FIRMLY ESTABLISHED. REPAIRS TO PREVENT FURTHER DAMAGE.
TEMPORARY BLOCK TEMPORARY SEDIMENT
8 CHANNEL PROTECTION RIP RAP OUTLET PROTECTION s AND GRAVEL DROP INLET PROTECTION _5 TRAP RIP RAP OUTLET PROTECTION
C501 C501 C501 C501
DIKE 4'MIN.
15� NEW RIPRAP TO HOLD-DOWN STAKES �O 3:1 1.5'MIN.
.
A EXISTING
g^ EXTEND TO TOP "B"MIN.
GRADE
MIN. OF EXISTING WIRE MESH
BOTTOM WIDTH P N0: DATE: DESCRIPTION:
0 O CHANNEL BANKS SUPPORT FENCE 5Q PLASTIC , III-III-III III-III-III-III- REVISIONS
_ _ _-ICI-ICI-ICI
OOoQO OoOOo O OOp9°0 STEEL POSTTYP. <`06666) CORRUGATED - - -
FILTER
Oo O o 0 „$„ $ FILTER FABRIC COMPACTED FILL PIPE(PER PLAN) III III, III III I I I
PROJECT NUMBER:
FABRIC oO o00 1 „�I STABILIZE IIII II INLET FLOW 2180544
0 0 'I ll
A CLASS B EROSION 0 0 4^ \ �I I-i
CONTROLSTONE � DRAWN BY:
WASHED STONE - _ -
(8"TOP LAYER) 04 O°C
MATERIAL SPECIFICATIONS:
_ _ -
Oo BURY ENDS OF THICKNESS O�° III- vo KCG/ITC
OUV o�C STONE INLET REVIEWED BY:
oQ ��oo(�p 2') ii� FILTER FABRIC 3(5 o0C PROTECTION PAS
C FILTER FABRIC OF AT LEAST 95%BY WEIGHT OF POLYOLEFINS OR
CH
FABRIC
FILTER oo00fl0 TYPICAL(y�000 O N MINIMUM MINIMUM t50"STONE 1 IS CERTIFIED BY THE MANUFACTURER OR SUPPLIER AS ONFORMING TO THE REQUIREMENTS IN A TIM 4'MIN. v O TYP,
0 S A 0 r) °� O O Ud TYPICAL SIZE AS INDICATED D6461. LEVEL
2.SYNTHETIC FILTER FABRIC SHOULD CONTAIN ULTRAVIOLET RAY INHIBITORS AND STABILIZERS. SECTION ISSUED FOR:
SECTION A-A 3.ENSURE THAT POSTS FOR SEDIMENT FENCES ARE 1.33 LB/LINEAR FEET STEEL WITH A MINIMUM LENGTH
FILTER FABRIC TYPICAL OF 5-FEET. MAKE SURE THAT STEEL POSTS HAVE PROJECTIONS TO FACILITATE FASTENING THE FABRIC. REVIEW
v� 4. FOR REINFORCEMENT OF STANDARD STRENGTH FILTER FABRIC,USE WIRE FENCE WITH A MINIMUM 14- PLAN VIEW FLOW
CONSTRUCTION SPECIFICATIONS: GUAGE AND A MAXIMUM MESH SPACING OF 6-INCHES.
-moo STANDARD T-SECTION DATE:
1.PLACE STONE TO THE LINES AND DIMENSIONS SHOWN IN THE PLAN ON A FILTER SUBGRADE PREPARATION-PREPARE THE SUBGRADE FOR RIPRAP AND FILTER TO THE REQUIRED LINES CONSTRUCTION SPECIFICATIONS: CONSTRUCTION SPECIFICATIONS
FABRIC FOUNDATION. AND GRADES INDICATED ON THE PLANS.COMPACT ANY FILL REQUIRED IN THE SUBGRADE TO A 9/24/18
V! 2.KEEP THE CENTER STONE SECTION AT LEAST 9-INCHES BELOW NATURAL GROUND DENSITY APPROXIMATING THAT OF THE SURROUNDING UNDISTURBED MATERIAL OR OVERFILL 1. CONSTRUCT THE SEDIMENT BARRIER OF STANDARD STRENGTH OR EXTRA STRENGTH SYNTHETIC FILTER A COMMON FAILURE OF SLOPE DRAINS IS CAUSED BY WATER SATURATING THE SOIL
DEPRESSIONS WITH RIPRAP.REMOVE BRUSH,TREES,STUMPS AND OTHER OBJECTIONABLE MATERIAL. FABRICS.
-� LEVEL WHERE THE DAM ABUTS THE CHANNEL BANKS. AND SEEPING ALONG THE PIPE.THIS CREATES VOIDS FROM CONSOLIDATION AND
CUT THE SUBGRADE SUFFICIENTLY DEEP THAT THE FINISHED GRADE OF THE RIPRAP WILL BE AT THE 2.ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT EXCEED 18-INCHES ABOVE THE GROUND PIPING AND CAUSES WASHOUTS.PROPER BACKFILLING AROUND AND UNDER THE DRAWING NAME:
3.EXTEND STONE AT LEAST 1.5-FT BEYOND THE DITCH BANKS TO KEEP OVERFLOW ELEVATION OF THE SURROUNDING AREA. CHANNELS SHOULD BE EXCAVATED SUFFICIENTLY TO ALLOW SURFACE(HIGHER FENCES MAY IMPOUND VOLUMES OF WATER SUFFICIENT TO CAUSE FAILURE OF THE PIPE"HAUNCHES"WITH STABLE SOIL MATERIAL AND HAND COMPACTION IN 6-INCH
WATER FROM UNDERCUTTING THE DAM AS IT RE-ENTERS THE CHANNEL. PLACEMENT OF THE RIPRAP IN A MANNER SUCH THAT THE FINISHED INSIDE DIMENSIONS AND GRADE STRUCTURE). LIFTS TO ACHIEVE FIRM CONTACT BETWEEN THE PIPE AND THE SOIL AT ALL POINTS WILL
OF THE RIPRAP MEET DESIGN SPECIFICATIONS. 3.CONSTRUCT THE FILTER FABRIC FROM A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO ELIMINATE THIS TYPE OF FAILURE.
C:I 4.SET SPACING BETWEEN DAMS TO ASSURE THAT THE ELEVATION AT THE TOP OF THE AVOID JOINTS.WHEN JOINTS ARE NECESSARY,SECURELY FASTEN THE FILTER CLOTH ONLY AT A
LOWER DAM IS THE SAME AS THE TOE ELEVATION OF THE UPPER DAM. SYNTHETIC FILTER FABRIC-PLACE THE FILTER FABRIC DIRECTLY ON THE PREPARED SUBGRADE.OVERLAP SUPPORT POST WITH OVERLAP TO THE NEXT POST.
1.PLACE SLOPE DRAINS ON UNDISTURBED SOIL OR WELL-COMPACTED FILL AT LOCATIONS
Cn Cz 5. PROTECT THE CHANNEL DOWNSTREAM FROM THE LOWEST CHECK DAM, THE EDGES BY AT LEAST 12-INCHES AND SPACE ANCHOR PINS EVERY 3-FEET ALONG THE OVERLAP. BURY 4.SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE MESH FASTENED SECURLY TO THE UPSLOPE SIDE AND ELEVATIONS SHOWN ON THE PLANS.
CONSIDERING THAT WATER WILL FLOW OVER AND AROUND THE DAM. THE UPPER AND LOWER ENDS OF THE CLOTH A MINIMUM OF 12-INCHES BELOW GROUND.TAKE CARE OF THE POSTS USING HEAVY DUTY TIE WIRES. EXTEND THE WIRE MESH SUPPORT TO THE BOTTOM OF THE 2. SLIGHTLY SLOPE THE SECTION OF PIPE UNDER THE DIKE TOWARD ITS OUTLET.
i NOT TO DAMAGE THE CLOTH WHEN PLACING RIPRAP. IF DAMAGE OCCURS,REMOVE THE RIPRAP AND TRENCH.
M 6.MAKE SURE THAT THE CHANNEL REACH ABOVE THE MOST UPSTREAM DAM REPAIR THE SHEET BY ADDING ANOTHER LAYER OF FILTER MATERIAL WITH A MINIMUM OVERLAP OF 5.WHEN A WIRE MESH SUPPORT FENCE IS USED,SPACE POSTS A MAXIMUM OF 8-FEET APART.STEEL 3. HAND TAMP THE SOIL UNDER AND AROUND THE ENTRANCE SECTION IN LIFTS NOT TO
IS STABLE. EXCEED 6-INCHES.
j 12-INCHES AROUND THE DAMAGED AREA. IF EXTENSIVE DAMAGE IS SUSPECTED,REMOVE AND REPLACE SUPPORT POSTS SHOULD BE DRIVEN SECURELY INTO THE GROUND TO A MINIMUM OF 18-INCHES.
7.ENSURE THAT CHANNEL APPURTENANCES,SUCH AS CULVERT ENTRANCES BELOW EROSION A N D
U THE ENTIRE SHEET. WIRE MESH SUPPORT FENCE MATERIAL SHALL BE AGRICULTURAL QUALITY 14-GAGE ANNEALED 4.ENSURE THAT FILL OVER THE DRAIN AT THE TOP OF THE SLOPE HAS MINIMUM
CHECK DAMS,ARE NOT SUBJECT TO DAMAGE OR BLOCKAGE FROM DISPLACED STEEL WIRE WITH A 4"x 5"MAX.SPACING PATTERN. DIMENSIONS OF 1.5 FT.DEPTH,4 FT.TOP WIDTH,AND 3:1 SIDE SLOPES.
STONES. WHERE LARGE STONES ARE USED OR MACHINE PLACEMENT IS U DIFFICULY,A 4-INCH LAYER OF FINE 6. EXTRA STRENGTH FILTER FABRIC WITH 6-FT POST SPACING DOES NOT REQUIRE WIRE MESH SUPPORT 5. ENSURE THAT ALL SLOPE DRAIN CONNECTIONS ARE WATERTIGHT.
GRAVEL OR SAND MAY BE NEEDED TO PROTECT THE FILTER CLOTH.
FENCE.TIE WIRE THE FILTER FABRIC DIRECTLY TO POSTS. 6.ENSURE THAT ALL FILL MATERIAL IS WELL-COMPACTED.SECURELY FASTEN THE
Q MAINTENANCE: 7. EXCAVATE A TRENCH APPROXIMATELY 4-INCHES WIDE AND 8-INCHES DEEP ALONG THE PROPOSED EXPOSED SECTION OF THE DRAIN WITH GROMMETS OR STAKES SPACED NO MORE SEDIMENT CONTROL
1.INSPECT CHECK DAMS AND CHANNELS FOR DAMAGE AFTER EACH RUNOFF STONE PLACEMENT-PLACEMENT OF RIPRAP SHOULD FOLLOW IMMEDIATELY AFTER PLACEMENT OF THE LINE OF POSTS AND UPSLOPE FROM THE BARRIER. THAN 10-FEET APART.
EVENT. FILTER FABRIC.PLACE RIPRAP SO THAT IT FORMS A DENSE,WELL-GRADED MASS OF STONE WITH A 8. BACKFILL THE TRENCH WITH COMPACTED SOIL PLACED OVER THE FILTER FABRIC. 7. EXTEND THE DRAIN BEYOND THE TOE OF THE SLOPE AND ADEQUATELY PROTECT THE DETAILS
2.ANTICIPATE SUBMERGENCE AND DEPOSITION ABOVE THE CHECK DAM AND MINIMUM OF VOIDS.THE DESIRED DISTRIBUTION OF STONES THROUGHOUT THE MASS MAY BE OBTAINED
o 9.DO NOT ATTACH FILTER FABRIC TO EXISTING TREES. OUTLET FROM EROSION.
EROSION FROM FLOWS AROUND THE EDGES OF THE DAM. CORRECT ALL BY SELECTIVE LOADING AT THE QUARRY AND CONTROLLED DUMPING DURING FINAL PLACEMENT.
"c PLACE RIPRAP TO ITS FULL THICKNESS IN ONE OPERATION. DO NOT PLACE RIPRAP BY DUMPING 8. MAKE THE SETTLED,COMPACTED DIKE RIDGE NO LESS THAN 1-FEET ABOVE THE TOP
C.D .D DAMAGE IMMEDIATELY. IF SIGNIFICANT EROSION OCCURS BETWEEN DAMS, MAINTENANCE: OF THE PIPE AT EVERY POINT.
INSALL A PROTECTIVE RIPRAP LINER IN THAT PORTION OF THE CHANNEL. THROUGH CHUTES OR OTHER METHODS THAT CAUSE SEGREGATION OF STONE SIZES.TAKE CARE NOT
�' TO DISLODGE THE UNDERLYING BASE OF FILTER FABRIC WHEN PLACING THE STONES. 1. INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED 9. IMMEDIATELY STABILIZE ALL DISTURBED AREAS FOLLOWING CONSTRUCTION.
m CU 3.REMOVE SEDIMENT ACCUMULATED BEHIND THE DAMS AS NEEDED TO PREVENT REPAIRS IMMEDIATELY. SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE,TEAR,DECOMPOSE OR
Z DAMAGE TO CHANNEL VEGETATIONa- 0 ,ALLOW THE CHANNEL TO DRAIN THROUGH THE FINISHED SLOPE SHOULD BE FREE OF POCKETS OF SMALL STONE OR CLUSTERS OF LARGE STONES. BECOME INNEFECTIVE,REPLACE IT PROMPTLY. REPLACE BURLAP EVERY 60 DAYS. MAINTENANCE: DRAWING NUMBER:
U THE STONE CHECK DAM AND PREVENT LARGE FLOWS FROM CARRYING SEDIMENT HAND PLACING MAY BE NECESSARY TO ACHIEVE THE PROPER DISTRIBUTION OF STONE SIZES TO 2.REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE
r OVER THE DAM.ADD STONES TO DAMS AS NEEDED TO MAINTAIN DESIGN WEIGHT PRODUCE A RELATIVELY SHOOTH,UNIFORM SURFACE.THE FINISHED GRADE OF THE RIPRAP SHOULD NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE.TAKE CARE TO AVOID UNDERMINING THE INSPECT THE SLOPE DRAIN AND SUPPORTING DIVERSION AFTER EVERY RAINFALL
ri AND CROSS SECTION. BLEND(MATCH GRADE)WITH THE SURROUNDING AREA. NO OVERFILL OR PROTRUSION OF RIPRAP FENCE DURING CLEANOUT. REMOVE ALL FENCING MATERIALS AND UNSTABILIZED SEDIMENT DEPOSITS. AND PROMPTLY MAKE NECESSARY REPAIRS.WHEN THE PROTECTED AREA HAS BEEN
2 SHOULD BE APPARENT WHICH WOULD IMPAIR STREAM FLOWS. PERMANENTLY STABILIZED.TEMPORARY MEASURES MAY BE REMOVED,MATERIALS
o Cz BRING THE AREA TO GRADE AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN DISPOSED OF PROPERLY,AND ALL DISTURBED AREAS STABILIZED APPROPRIATELY.
Cy Q PROPERLY STABILIZED.
4 TEMPORARY GRAVEL CHECK DAM s RIP RAP CHANNEL PROTECTION 2 TEMPORARY SEDIMENT FENCE (a)TEMPORARY SLOPE DRAIN
N C501 A501 C501 C501
ozS }
m s
1� 71;9
o a L. j 501

6.10 LaBeLLa
TEMPORARYTable 6.10a Seeding mixture
Temporary Seeding Species Rate (lb/acre) Powered by partnership.
T S Recommendations for Late Rye (grain) 120
Definition Planting rapid-growing annual grasses, small grains, or legumes to provide Winter and Early Spring Annual lespedeza (Kobe in 615 St. George Square
initial,temporary cover for erosion control on disturbed areas. Piedmont and Coastal Plain, STEEL POST Suite 300
Korean in Mountains) 50
CLASS 1 OR 2 1'MIN WASHED STONE
RIP-RAP (NCDOT#5 OR#57) Winston-Salem , NC 27103
Purpose To temporarily stabilize denuded areas that will not be brought to final grade Omit annual lespedeza when duration of temporary cover is not to �, ?' F OW 3 3 6-8 4 2-4 0 6 5
for a period of more than 21 calendar days. extend beyond June. C#0 4 3 0
Temporary seeding controls runoff and erosion until permanent vegetation or label l a p c.c o m
Seeding dates METAL STAKES
other erosion control measures can be established. In addition, it provides Mountains-Above 2500 feet: Feb. 15- May 15
residue for soil protection and seedbed preparation, and reduces problems of Below 2500 feet: Feb. 1- May 1 4'MAX
#57 WASHED STONE PILED
mud and dust production from bare soil surfaces during construction. Piedmont-Jan. 1 - May 1 STEEL POST OAGAINST AND F HARDWARE N TOP CLOTH HARDWARE CLOTH UP
THE SIDES OF THE
16 MINIMUM STAKES AND LAID ON
Coastal Plain-Dec. 1 -Apr. 15 STONE HEIGHT THE GROUND
On an cleared, urive etated, or sparsely vegetated soil surface where WIRE FENCING CLASS 1 OR 2 RIP-RAP WITH 6 I �Q
Conditions Where Y g p Y g Soil amendments NCHESOSTREAM WASHED STONE ON
vegetative cover is needed for less than 1 year. Applications of this practice (IF APPLICABLE) UPSTREAM FACE _
Practice Applies Follow recommendations of soil tests or apply 2,000 lb/acre ground
include diversions, dams,temporary sediment basins,temporary road banks, agricultural limestone and 750 lb/acre 10-10-10 fertilizer.and topsoil stockpiles. WOVEN FILTER
Mulch FABRIC N - GD III-III-III-III-III-III=I=I SECTION
Annual plants,which sprout and row rapidly and survive for only one season Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt,netting, _ _ _ = 1Tf=_1Tf=_1Tf�Tf 1Tf Tf=_I 1= - G
Planning p p g p Y Y or a mulch anchoringtool. Adisk with blades set near) straight can be -III=111=111=1L=1 ll1 111 111=ll1=ll1=ll1=ll1=1 L=III= 111 111 O
are suitable for establishing initial or temporary vegetative cover. Temporary y g =1 I-III-III-III I=1 I-III-III-III-I 11- -III-III 1=1 I 1=1 11=I I-III-I �`
Considerations used as a mulch anchoring tool. III=- FILTER OF HARDWARE CLOTH AND#57 WASHED `V
STONE IS WRAPPED AROUND THE INLET
seeding preserves the integrity of earthen sediment control structures such
as dikes, diversions, and the banks of dams and sediment basins. It can also GENERAL NOTES: MAINTENANCE NOTES:
Maintenance 1. SEDIMENT FILTER OUTLET SHALL BE 161NCHES HIGH BUT NO 1. FILTER OUTLETS SHALL BE INSPECTED BY THE FINANCIALLY
reduce the amount of maintenance associated with these devices. For example Refertilize if growth is not fully adequate. Reseed, refertilize and mulch TALLER THAN 18INCHES RESPONSIBLE PARTY OR HIS AGENT IMMEDIATELY AFTER
STAKES MUST BEz' 1z"
EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED No MORE THAN
the frequency of sediment basin cleanouts will be reduced if watershed areas, Immediately following erosion or other damage. 2. CLASS OR2RIP-RAP SHALL BE USED AND COVERED WITH RAINFALL.ANY REPAIRS NEEDED SHALL BE MADE APART MIN.
outside the active construction zone are stabilized. 6INCHES OF NCDOT#5 OR#57 WASHED STONE ON THE IMMEDIATELY.
UPSLOPE SIDE. INLET
2. THE STONE SHALL BE REPLACED PROMPTLY AFTER ANY
Proper seedbed preparation,selection of appropriate s ecies and use of quality 3. POSTS SHALL BE NO MORE THAN 4 FEET APART. EVENT THAT HAS CLOGGED OR REMOVED IT.
p p pspecies, q t3'
seed are as important in this Practice as in Practice 6.11 Permanent Seeding. 4. SITE OUTLETS AT ANY POINT SMALL CONCENTRATED FLOWS 3. SEDIMENT DEPOSITS SHOULD BE REMOVED WHEN
1> > g• ARE ANTICIPATED AND AT THE DIRECTION OF THE DEPOSITS REACH HALF THE HEIGHT OF THE BARRIER.ANY
Failure to follow established guidelines and recommendations carefully may INSPECTOR. SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT
Y Y Table 6.10b Seeding mixture SENCE DIMENTDETISITSREM REMAINING
BEAC DRESSED AFTERT
result in an inadequate Or short-lived stand of vegetation that will not control Temporary Seeding Species Rate (lb/acre) 5. ONE ACRE MAXIMUM DRAINAGEARAPEROUTLT. CONFORM TO THE EXISTING GRADE,PREPARED AND
SEEDED.
HARDWARE CL
erosion. Recommendations for German millet 40
PLAN #57 WASHED STONE
Temporary seeding provides protection for no more than 1 year,during which Summer
time permanent stabilization should be initiated. In the Piedmont and Mountains, a small-stemmed Sudangrass may be
substituted at a rate of 50 lb/acre.
Seeding dates 7 SILT FENCE STONE OUTLET 6 #57 WASHED STONE & WIRE INLET PROTECTION
Specifications Complete grading before preparing seedbeds,and install all necessary erosion L
control practices such as,dikes,waterways,and basins. Minimize steep slopes Mountains-May 15 -Aug. 15 0502 c502
because they make seedbed preparation difficult and increase the erosion Piedmont-May 1 -Aug. 15
hazard. If soils become compacted during grading,loosen them to a depth of Coastal Plain-Apr. 15 -Aug. 15
6-8 inches using a ripper,harrow,or chisel plow.
©Soil amendments 2016 LaBella Associates
SEEDBED PREPARATION Follow recommendations of soil tests or apply 2,000 lb/acre ground EMERGENCY SPILLWAY TO BE
agricultural limestone and 750 lb/acre 10-10-10 fertilizer. CUT INTO UNDISTURBED SOIL
Good seedbed preparation is essential to successful plant establishment. A g PROVIDE CURLER I EXCELSIOR
good seedbed is well-pulverized, loose, and uniform. Where hydroseeding MATTING
methods are used, the surface may be left with a more irregular surface of Mulch
large clods and stones. Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be ALAMAN C E
Liming-Apply lime according to soil testrecommendations.IfthepH(acidity) used as a mulch anchoring tool.
BASIN AGGREGATES, LLC
of the soil is not known,an application Of ground agricultural limestone at the INFLUENT FLOATING w
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulchSURFACE
DESIGN WATER SEEDTAILKIMMER o
rate Of 1 to 1 1/2 tons/acre on coarse-textured soils and 2-3 tons/acre on fine- immediately following erosion or other damage. LEVEL O o w
textured soils is usually sufficient. Apply limestone uniformly and incorporate RIPRAP INLET BAFFLES TYPICAL
into the top 4-6 inches of soil. Soils with a pH of 6 or higher need not be PROTECTION SEE DETAIL T1
limed. Table 6.10c Seeding mixture
Fertilizer-Base application rates on soil tests. When these are not possible, Temporary Seeding Species Rate (lb/acre)
Recommendations for Fall Rye (grain) 120
apply a 10-10-10 grade fertilizer at 700-1,000 lb/acre. Both fertilizer and lime
should be incorporated into the top 4-6 inches of soil. If a hydraulic seeder is TOP OF DAM
Seeding dates 12"MIN.WASHED
used,do not mix seed and fertilizer more than 30 minutes before application. g STONE FILTER 5'MIN. TOP OF WEIR 0.35x"L" 0.25x"L" 0.25x"L" 0.1 sx'L"
Mountains-Aug. 15 - Dec. 15 NCDOTSTD.#57 WATER SURFACE LENGTH"L"
Surface roughening-If recent tillage operations have resulted in a loose Coastal Plain and Piedmont-Aug. 15 - Dec. 30 3600CU.FT./ACRE .5' NOTE:
surface, additional roughening may not be required, except to break u large SEDIMENT TRAP 01 p 5'MAX. SEE PROJECT EROSION CONTROL PLAN FOR SPECIFIC BASIN DIMENSIONS AND ORIENTATION
g g Y q � P P g O O ? FILL BASIN DESIGN o
Soil amendments ccc��� o WATER LEVEL ELEV
clods. If rainfall causes the surface to become sealed or crusted, loosen it 0 5'-0" : m TOP OF DAM TYPICAL BASIN PLAN
just prior to seeding b disking,raking,harrowing,or other suitable methods. Follow soil tests or apply 2,000 lb/acre ground agricultural limestone COARSE STONE FILL n SK�MMER.SEED TAIL ATING SURFACE MIN. Q ELEVATION
J p g Y g g g, CLASS B EROSION FILTER FABRIC
Groove or furrow slopes steeper than 3:1 on the contour before seeding and 1,000 lb/acre 10-10-10 fertilizer. CONTROLSTONE 2
EMERGENCY SUPPORT ROPE OR SUPPORT POST STAKE TO
(Practice 6.03,SZIYfaCe Roughening). BAFFLE 2 SPILLWAY WIRE TO PREVENT 24"INTO BOTTOM SUPPORT WIRE
Mulch CROSS SECTION d1 ELEVATION SAGGING OR SIDE
PLANT SELECTION Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting, BASIN BOTTOM ELEVATION
Select an appropriate species or species mixture from Table 6.10a for seeding or a mulch anchoring tool. A disk with blades set nearly straight can be COMPACTED EARTH
in late winter and earl spring,Table 6.10b for summer, and Table 6.10c for used as a mulch anchoring tool. OVERFILL S"FOR BELOW SETTLED TOP
EMBANKMENT STABILIZED OUTLET
Y p g' ' DESIGN PARTIAL BASIN SECTION PROTECTION
P1�� SETTLEMENT BELOW SETTLED TOP COIR MESH OR SIMILAR
fall. Maintenance SETTTOP LED MIN. OF DAM CONSTRUCTION SPECIFICATIONS BAFFLE ELEVATION STAPLED OR TRENCHED
1.CLEAR,GRUB,AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL VEGETATION AND INTO BOTTOM OR SIDE
In the Mountains, December and January seedings have poor chances of
Repair and refertilize damaged areas immediately. Topdress with 50 =1 5 1.5'- _III III ROOT MAT.REMOVE ALL SURFACE SOIL CONTAINING HIGH AMOUNTS OF ORGANIC CONSTRUCTION SPECIFICATION
MATTER AND STOCKPILE OR DISPOSE OF IT PROPERLY.HAUL ALL OBJECTIONABLE MATERIAL
lb/acre of nitrogen in March. If it is necessary to extent temporary s'M iI- on
success. When it is necessary to plant at these times, use recommendations g y p y FI L �O °� - -� NATURAL TO THE DESIGNATED DISPOSAL AREA.PLACE TEMPORARY SEDIMENT CONTROL MEASURES 1. GRADE THE BASIN SO THE BOTTOM IS LEVEL FRONT TO BACK AND SIDE TO SIDE.
for fall and a securely tacked mulch. cover beyond June 15, overseed with 50 lb/acre Kobe (Piedmont and GROUND BELOW BASIN AS NEEDED. 2. INSTALL POST ACROSS THE WIDTH OF THE SEDIMENT TRAP(PRACTICE 6.62,SEDIMENT FENCE)
Y ) ( ) p y 3. STEEL POST SHOULD BE DRIVEN TO A DEPTH OF 24 INCHES,SPACED A MAXIMUM OF 4 FEET A I a m a n c e County Mine
Coastal Plain or Korean Mountains lespedeza In late February or 3' 2:1 SIDE 2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE OF ROOTS,WOODY VEGETATION, APART,AND INSTALLED UP THE SIDES OF THE BASIN AS WELL.THE TOP OF THE FABRIC SHOULD
SEEDING earl March. FILTER IN SLOPE MAX. ORGANIC MATTER,AND OTHER OBJECTIONABLE MATERIAL.PLACE THE FILL IN LIFTS NOT TO BE 6INCHES HIGHER THAN THE INVERT OF THE SPILLWAY.TOPS OF BAFFLES SHOULD BE 2INCHES
Y FABRIC 1:1 SIDE EXCEED 9 INCHES,AND MACHINE COMPACT IT.OVER FILL THE EMBANKMENT 6 INCHES TO LOWER THAN THE TOP OF THE BERMS.
Evenly apply seed using a cyclone seeder(broadcast),drill,cultipacker seeder, SLOPE MAX. ALLOW FOR SETTLEMENT. 4. INSTALL AT LEAST THREE ROWS OF BAFFLES BETWEEN THE AND THE OUTLET POINT.BASINS
LESS THAN 20 FEET IN LENGTH MAY USE 2 BAFFLES.
or hydroseeder. Use seeding rates given in Tables 6.10a-6.1 Oc. Broadcast STONE SECTION 3. SHAPE THE BASIN TO THE SPECIFIED DIMENSIONS.PREVENT THE SKIMMING DEVICE FROM 5.WHEN USING POST,ADD A SUPPORT WIRE OR ROPE ACROSS THE TOP OF THE MEASURE To
seeding and h droseedin areappropriate for stee slo es where equipment SETTLING INTO THE MUD BY EXCAVATING A SHALLOW PIT UNDER THE SKIMMER OR PREVENT SAGGING.
g Y gp Ii OR PROVIDING A LOW SUPPORT UNDER THE SKIMMER OF STONE OR BLOCK. 6.WRAP POROUS MATERIAL,LIKE JUTE BACKED BY COIR MATERIAL,OVER THE TOP WIRE.THE FABRIC
cannot be driven. Hand broadcasting is not recommended because of the SHOULD HAVE FIVE TO TEN PERCENT OPENINGS IN THE WEAVE.ATTACH FABRIC TO A ROPE AND A
4.PLACE THE BARREL(TYPICALLY 4-INCH SCHEDULE 40 PVC PIPE)ON A FIRM,SMOOTH SUPPORT STRUCTURE WITH ZIP TIES,WIRE,OR STAPLES.
difficulty in achieving a uniform distribution. o FOUNDATION OF IMPERVIOUS SOIL.DO NOT USE PERVIOUS MATERIAL SUCH AS SAND, 7.THE BOTTOM AND SIDES OF THE FABRIC SHOULD BE ANCHORED IN A TRENCH OR PINNED WITH
GRAVEL,OR CRUSHED STONE AS BACKFILL AROUND THE PIPE.PLACE THE FILL MATERIAL 8-INCH EROSION CONTROL MATTING STAPLES.
CONSTRUCTION SPECIFICATIONS AROUND THE PIPE SPILLWAY IN 4-INCH LAYERS AND COMPACT IT UNDER AND AROUND 8. DO NOT SPLICE THE FABRIC,BUT USE A CONTINUOUS PIECE ACROSS THE BASIN.
Small grains should be planted no more than 1 inch deep, and grasses and ° O O O NVERT PIPE THE PIPE TO AT LEAST THE SAME DENSITY AS THE ADJACENT EMBANKMENT.CARE MUST BE
NOTES: O O 0oOQ0 1.CLEAR,GRUB,AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL VEGETATION TAKEN NOT TO RAISE THE PIPE FROM THE FIRM CONTACT WITH ITS FOUNDATION WHEN MAINTENANCE
legumes no more than 1/2 inch. Broadcast seed must be covered by raking 1. STRUCTURAL STONE SHALL BE ° O AND ROOT MAT. REMOVE ALL SURFACE SOIL CONTAINING HIGH AMOUNTS OF COMPACTING UNDER THE PIPE HAUNCHES.
Or chain dragging, and then lightly firmed with a roller Or cults acker. CLASS B STONE. ORGANIC MATTER AND STOCKPILE OR DISPOSE OF IT PROPERLY.HAUL ALL PLACE A MINIMUM DEPTH OF 2 FEET OF COMPACTED BACKFILL OVER THE PIPE SPILLWAY INSPECT BAFFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED REPAIRS
g Y p 2. SEDIMENT CONTROL STONE 0 0 OBJECTIONABLE MATERIAL TO THE DESIGNATED DISPOSAL AREA.
0 O FLOW BEFORE CROSSING IT WITH CONSTRUCTION EQUIPMENT.IN NO CASE SHOULD THE PIPE IMMEDIATELY.
SHALL BE N0.5 OR N0.57 2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE..ROOTS,WOODY
Hydroseeded mixtures should include a wood fiber(cellulose)mulch. 0.00 r CONDUIT BE INSTALLED BY CUTTING A TRENCH THROUGH THE DAM AFTER THE EMBANKMENT
�� 'THE FILL
J,FI GS NO iC�O E T ER, 9-I OTHER ND MA HIKE CO PACT r. OVER IS COMPLETE. BE SURE TO MAINTAIN ACCESS TO THE BAFFLES.SHOULD THE FABRIC OF A BAFFLE COLLAPSE,TEAR,
3. DIMENSIONS ARE MINIMUM THE FILL IN LITS NOT TO EXCEED 9-INCHES AND MACHINE COMPACT IT. OVER FILL
MULCHING ACCEPTABLE UNLESS OTHERWISE A RO 0 A THE EMBANKMENT 6-INCHES TO ALLOW FOR SETTLEMENT. DECOMPOSE,OR BECOME INEFFECTIVE,REPLACE IT PROMPTLY.
CJ 5.ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURERS INSTRUCTIONS,OR AS DESIGNED.
SPECIFIED BY THE ENGINEER. O O 3.CONSTRUCT THE OUTLET SECTION IN THE EMBANKMENT.PROTECT THE CONNECTION
The use of an appropriate mulch will help ensure establishment under normal 0°O��O0 BETWEEN THE RIPRAP AND THE SOIL FROM PIPING BY USING FILTER FABRIC OR A REMOVE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL To PROVIDE ADEQUATE STORAGE
o° 0 KEYWAY CUTOFF TRENCH BETWEEN THE RIPRAP STRUCTURE AND THE SOIL. 6. LAY THE ASSEMBLED SKIMMER ON THE BOTTOM OF THE BASIN WITH THE FLEXIBLE JOINT AT THE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE BAFFLES.
conditions, and is essential to seeding success under harsh site conditions INLET OF THE BARREL PIPE.ATTACH THE FLEXIBLE JOINT TO THE BARREL PIPE AND POSITION THE
(Practice 6.14,Mulching). Harsh site conditions include: �° SKIMMER OVER THE EXCAVATED PIT OR SUPPORT.BE SURE TO ATTACH A ROPE TO THE SKIMMER AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED,REMOVE ALL BAFFLE -- - --
a. PLACE THE FILTER FABRIC BETWEEN THE RIPRAP AND SOIL. EXTEND THE FABRIC AND ANCHOR IT TO THE SIDE OF THE BASIN.THIS WILL BE USED TO PULL THE SKIMMER TO THE MATERIALS AND UNSTABLE SEDIMENT DEPOSITS,BRING THE AREA TO GRADE,AND STABILIZE IT.
• seeding in fall for winter cover(wood fiber mulches are not considered ACROSS THE SPILLWAY FOUNDATION AND SIDES TO THE TOP OF THE DAM; SIDE FOR MAINTENANCE. NO: DATE: DESCRIPTION:
adequate for this use), OR 7. EARTHEN SPILLWAYS-INSTALL THE SPILLWAY IN UNDISTURBED SOIL TO THE GREATEST EXTENT Sediment Basin Baffle REVISIONS
POSSIBLE.THE ACHIEVEMENT OF PLANNED ELEVATIONS,GRADE,DESIGN WIDTH,AND
• slopes steeper than 3:1, STRUCTURAL STONE b.EXCAVATE A KEYWAY TRENCH ALONG THE CENTERLINE OF THE SPILLWAY ENTRANCE AND EXIT CHANNEL SLOPES ARE CRITICAL TO THE SUCCESSFUL OPERATION OF 6"I.D.SCH.40 SKIMMER PROJECT NUMBER:
FLOOD STORAGE ZONE 1 MI FOUNDATION EXTENDING UP THE SIDES TO THE HEIGHT OF THE DAM.THE TRENCH THE SPILLWAY.THE PILLWAY SHOULD BE LINED WITH LAMINATED PLASTIC OR IMPERMEABLE PVC PIPE FLOAT INFLUENT
• excessivelyhot or d weather, SEDIMENT STORAGE ZONE SHOULD BE AT LEAST 2-FEET DEEP AND 2-FEET WIDE WITH 1:1 SIDE SLOPES. GEOTEXTILE FABRIC.THE FABRIC MUST BE WIDE AND LONG ENOUGH TO COVER THE BOTTOM 6"PVC 90° 2180544
dry AND SIDES AND EXTEND ONTO THE TOP OF THE DAM FOR ANCHORING IN A TRENCH.THE BEND TYP.
N ORq0 FLOW 4.CLEAR THE POND AREA BELOW THE ELEVATION OF THE CREST OF THE EMBANKMENT. EDGES MAY BE SECURED WITH 8-INCH STAPLES OR PINS.THE FABRIC MUST BE LONG ENOUGH
4 --
• adverse soils(shallow,rocky,or high in clay or sand),and ��CJ 0 INVERT PIPE 5.ALL CUT AND FILL SLOPES SHOULD BE 2:1 OR FLATTER. TO EXTEND DOWN THE SLOPE AND EXIT ONTO STABLE GROUND.THE WIDTH OF THE FABRIC DRAWN BY:
6. ENSURE THAT THE STONE(DRAINAGE)SECTION OF THE EMBANKMENT HAS A MINIMUM MUST BE ONE PIECE,NOT JOINED OR SPLICED;OTHERWISE WATER CAN GET UNDER THE FABRIC.
NATURAL GROUND
• areas receiving concentrated flow. 1 1 BOTTOM WIDTH OF 3-FEET AND MAXIMUM SIDE SLOPES OF 1:1 THAT EXTEND TO THE IF THE LENGTH OF THE FABRIC IS INSUFFICIENT FOR THE ENTIRE LENGTH OF THE SPILLWAY, KC G/ATC
36"PIPE MAX. BOTTOM OF THE SPILLWAY SECTION. MULTIPLE SECTIONS,SPANNING THE COMPLETE WIDTH,MAY BE USED.THE UPPER SECTION(S)
If the area to be mulched is subject to concentrated waterflow,as in channels SEDIMENT CONTROL STONE SECTION A-A 7. CONSTRUCT THE MINIMUM FINISHED STONE SPILLWAY BOTTOM WIDTH, FILLED
SHOWN ON SHOULD OVERLAP THE LOWER SECTION(S)SO THAT WATER CANNOT FLOW UNDER THE FABRIC. REVIEWED BY: PAS
> > THE PLANS,WITH 2:1 SIDE SLOPES EXTENDING TO THE TOP OF THE OVER FILLED 4"PVC VENT 4"x 4"TEE
SECURE THE UPPER EDGE AND SIDES OF THE FABRIC IN A TRENCH WITH STAPLES OR PINS.
anchor mulch with netting(Practice 6.14,Mulching). EMBANKMENT. KEEP THE THICKNESS OF THE SIDES OF THE SPILLWAY OUTLET STRUCTURE
STANDARD R 0 C K P I P E INLET P R OT E C T I 0 N AT A MINIMUM OF 21-INCHES.THE WEIR MUST BE LEVEL AND CONSTRUCTED TO GRADE 8. INLETS-DISCHARGE WATER INTO THE BASIN IN A MANNER TO PREVENT EROSION.USE
5 TO ASSURE DESIGN CAPACITY. TEMPORARY SLOPE DRAINS OR DIVERSIONS WITH OUTLET PROTECTION TO DIVERT SEDIMENT q ISSUED FOR:
Maintenance Reseed and mulch areas where seedling emergence is poor,or where erosion 8. MATERIAL USED IN THE STONE SECTION SHOULD BE WELL-GRADED MIXTURE OF STONE LADEN WATER TO THE UPPER END OF THE POOL AREA TO IMPROVE BASIN TRAP EFFICIENCY. 0 1 1REVIEW
C502 WITH A d50 SIZE OF 9-INCHES(CLASS B EROSION CONTROL STONE IS RECOMMENDED)
CT Occurs, as soon as possible. DO not mow. Protect from traffic as much as AND A MAXIMUM STONE SIZE OF 14-INCHES.THE STONE MAY BE MACHINE PLACED 9. EROSION CONTROL-CONSTRUCT THE STRUCTURE SO THAT THE DISTURBED AREA IS MINIMIZED.
possible. AND THE SMALLER STONES WORKED INTO THE VOIDS OF THE LARGER STONES.THE DIVERT SURFACE WATER AWAY FROM BARE AREAS.COMPLETE THE EMBANKMENT BEFORE FLOW CONTROL GALVANIZED STL
vi STONE SHOULD BE HARD,ANGULAR,AND HIGHLY WEATHER-RESISTANT. THE AREA IS CLEARED.STABILIZE THE EMERGENCY SPILLWAY EMBANKMENT AND ALL OTHER ORIFICE STRAP TYPICAL DATE:
9 ENSURE THAT THE TOE OF THE EMBANKMENT NT UNTIILLL S ABLE CONDITIONS ARE Y OUTLET SECTION ENDS R ACHED AND OEAMUTLET
EAST THE DISTURBED AREAS ABOVE THE CREST OF THE PRINCIPAL SPILLWAY IMMEDIATELY AFTER CONSTRUCTION. 4"I.D.SCH.40 9/24/18
VELOCITY IS ACCEPTABLE FOR THE RECEIVING STREAM.KEEP THE EDGES OF THE STONE PV PIPE
References Site Preparation OUTLET SECTION FLUSH WITH THE SURROUNDING GROUND AND SHAPE THE CENTER TO 10. INSTALL POROUS BAFFLES AS INDICATED IN SEDIMENT BASIN BAFFLE DETAIL.
0 6.03,Surface Roughening 2'MIN, 10, CONFINE THE OUTFLOW STREAM(REFERENCES:OUTLET PROTECTION). 11.AFTER ALL THE SEDIMENT-PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED,REMOVE DRAWING NAME:
10.DIRECT EMERGENCY BYPASS TO NATURAL,STABLE AREAS. LOCATE BYPASS OUTLETS THE STRUCTURE AND ALL THE UNSTABLE SEDIMENT.SMOOTH THE AREA TO BLEND WITH THE
6.04,Topsoiling COMPACTED--.,,,----. SO THAT FLOW WILL NOT DAMAGE THE EMBANKMENT. ADJOINING AREAS AND STABILIZE PROPERLY. SKIMMER
SOIL 11.STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE THE SEDIMENT POOL 6"PVC CAP NFLUENT
2' E� // AND DOWNSTREAM FROM THE TRAP IMMEDIATELY AFTER CONSTRUCTION MAINTENANCE 1 6
Surface Stabilization //L (REFERENCES:SURFACE STABILIZATION). 5'-0"
\ ��\�//\\�/i \�\�/ y/ \/ / \i\ / 12.SHOW THE DISTANCE FROM THE TOP OF THE SPILLWAY TO THE SEDIMENT CLEANOUT INSPECT SKIMMER SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT(ONE-HALF
6.11,Permanent Seeding /� / "\� / / \ / \ /�\y\�\/ LEVEL(ONE-HALF THE DESIGN DEPTH)ON THE PLANS AND MARK IT IN THE FIELD, INCH OR GREATER)RAINFALL EVENT AND REPAIR IMMEDIATELY.REMOVE SEDIMENT AND RESTORE SKIMMER PLAN
M /\//\j�\\/\�\/�\j\\j�\j\i\y�\/\ \\\y�\�\\w\\/�\\ THE BASIN TO ITS ORIGINAL DIMENSIONS WHEN SEDIMENT ACCUMMULATES TO ONE-HALF THE
0 6.14,Mulching // Y\// // HEIGHT OF THE FIRST BAFFLE.PULL THE SKIMMER TO ONE SIDE SO THAT THE SEDIMENT UNDERNEATH PVC PIPE FLOAT
IT CAN BE EXCAVATED.EXCAVATE THE SEDIMENT FROM THE ENTIRE BASIN,NOT JUST AROUND THE 4"PVC VENT [13"I.D.SCH.40
EROSION A N D
i� f>t endix 6'TYPICAL SKIMMER OR THE FIRST CELL.MAKE SURE VEGETATION GROWING IN THE BOTTOM OF THE BASIN 3-6" 1'_6°
pp DOES NOT HOLD DOWN THE SKIMMER.
8.02,Vegetation Tables MAINTENANCE REPAIR THE BAFFLES IF THEY ARE DAMAGED.RE-ANCHOR THE BAFFLES IF WATER IS FLOWING
UNDERNEATH OR AROUND THEM. SEDIMENT CONTROL
Q 1.INSPECT TEMPORARY SEDIMENT TRAPS ATER EACH PERIOD OF SIGNIFICANT 4"22.5°BEND
> U CONSTRUCTION SPECIFICATIONS: IF THE SKIMMER IS CLOGGED WITH TRASH AND THERE IS WATER IN THE BASIN,USUALLY JERKING
RAINFALL. REMOVE SEDIMENT AND RESTORE THE TRAP TO ITS ORIGINAL DIMENSIONS SP x HUB
Y � 1. REMOVE AND PROPERLY DISPOSE OF ALL TREES,BRUSH,STUMPS AND OTHER OBJECTIONABLE WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE
ON THE ROPE WILL MAKE THE SKIMMER BOB UP AND DOWN AND DISLODGE THE DEBRIS AND
MATERIAL. RESTORE FLOW.IF THIS DOES NOT WORK,PULL THE SKIMMER OVER TO THE SIDE OF THE BASIN 4"PVC TEE DETAILS
TRAP. PLACE THE SEDIMENT THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA STN.STL.HOSE 4"x 4"PVC TEE
0 2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION MEETS ALL DESIGN REQUIREMENTS. AND REPLACE THE CONTAMINATED PART OF THE GRAVEL FACING. AND REMOVE THE DEBRIS.ALSO CHECK THE ORIFICE INSIDE THE SKIMMER TO SEE IF IT IS CLAMPS TYP.
•� 3. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE DESIGN ELEVATION 2. CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING.PERIODICALLY CLOGGED;IF SO REMOVE THE DEBRIS. 4"PVC FLANGE
C. ca PLUS THE SPECIFIED SETTLEMENT. 4"FLEXIBLE
CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT IS A MINIMUM OF 1.5 T.BELOW IF THE SKIMMER ARM OR BARREL PIPE IS CLOGGED,THE ORIFICE CAN BE REMOVED AND THE
C.D 4.PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE REGRADING AND THE LOW POINT OF THE EMBANKMENT.IMMEDIATELY FILL ANY SETTLEMENT OF THE OBSTRUCTION CLEARED WITH A PLUMBER'S SNAKE OR BY FLUSHING WITH WATER.BE SURE AND HOSE
m U CLEANOUT. EMBANKMENT TO SLIGHTLY ABOVE DESIGN GRADE.ANY RIPRAP DISPLACED FROM REPLACE THE ORIFICE BEFORE REPOSITIONING THE SKIMMER. 3"I.D.SCH.40 FLOW CONTROL ORIFICE
Z 5.VEGETATE THE RIDGE IMMEDIATELY ATER CONSTRUCTION,UNLESS IT WILL REMAIN IN PLACE THE SPILLWAY MUST BE REPLACED IMMEDIATELY. PVC PIPE CUT SMOOTH CIRCULAR
Cl LESS THEN 30 WORKING DAYS. CHECK THE FABRIC LINED SPILLWAY FOR DAMAGE AND MAKE ANY REQUIRED REPAIRS WITH OPENING TO DIMENSION DRAWING NUMBER:
C� 3.AFTER ALL SEDIMENT-PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED. INDICATED ON BASIN SITE
cp FABRIC THAT SPANS THE FULL WIDTH OF THE SPILLWAY.CHECK THE EMBANKMENT,SPILLWAYS,
r CD REMOVE THE STRUCTURE AND ALL UNSTABLE SEDIMENT.SMOOTH THE AREA TO
MAINTENANCE: BLEND WITH THE ADJOINING AREAS AND STABILIZE PROPERLY(REFERENCES: AND OUTLET FOR EROSION DAMAGE,AND INSPECT THE EMBANKMENT FOR PIPING AND BASIN BOTTOM PLAN
ca INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL.IMMEDIATELY SURFACE STABILIZATION). SETTLEMENT.MAKE ALL NECESSARY REPAIRS IMMEDIATELY.REMOVE ALL TRASH AND OTHER
r E REMOVE SEDIMENT FROM THE FLOW AREA AND REPAIR THE DIVERSION RIDGE. CAREFULLY DEBRIS FROM THE SKIMMER AND POOL AREAS. SKIMMER ELEVATION
N Q CHECK OUTLETS AND MAKE TIMELY REPAIRS AS NEEDED.WHEN THE AREA PROTECTED IS FREEZING WEATHER CAN RESULT IN ICE FORMING IN THE BASIN.SOME SPECIAL PRECAUTIONS
4 PERMANENTLY STABILIZED,REMOVE THE RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL SHOULD BE TAKEN IN THE WINTER TO PREVENT THE SKIMMER FROM PLUGGING WITH ICE. Floating Surface Skimmer
N GROUND LEVEL AND APPROPRIATELY STABILIZE IT.
a Lo
E ° 4 TEMPORARY SEEDING DETAIL 3 TEMPORARY DIVERSION DITCH 2 TEMPORARY SEDIMENT TRAP 1 SEDIMENT BASIN AND SKIMMER
oZs } C502 C502 C502 C502
o a I . J 502