NCG020978_Site Plan or Diagram_20211013

SHEET INDEX
Cl COVER SHEET
C2 MINE SITE LAYOUT PLAN
GAINEY ROAD
BORROW SOURCE
MINE PERMIT
GAINEY ROAD
CUMBERLAND COUNTY, NORTH CAROLINA
I
Sys �I �
SITE y
L
m
LOCATION MAP
SCALE: NTS
C3 DRAINAGE AREA MAP
C4 MINE MAP DECEMBER 2020
C5 RECLAMATION PLAN
C6 EROSION CONTROL NOTES s
RAFTING AND DESIGN
C7-10 EROSION CONTROL DETAILS0 SERVICES, INC.
C11 EROSION CONTROL CALCULATIONS
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
draftinganddesignCymail.com
SITE DEVELOPER/OWNER
DR ALLEN & SONS, INC.
1200 RAMSEY STREET
FAYETTEVILLE, NC 28301
CONTACT: BOB ALLEN JR.
PHONE: [phone]
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
project no. 2020-21

SITE DATA TABLE
OWNER: MURDOCK, LLC.
307 BUCKINGHAM DRIVE
MEBANE, NC 27302
PIN: PORTION OF 0454-83-2179
ALL OF 0454-80-5682
PARCEL ID: 99657
99655
PORTION OF DEED BOOK: 7923
PAGE #: 0112
TOTAL PARCEL AREA: 33.69 AC +/-
EXISTING ZONING: AGRICULTURE 1 (Al)
PROPOSED ZONING: AGRICULTURE 1 CONDITIONAL USE (Al -CZ)
CONDITIONAL ZONING AREA: 33.69 AC +/-
PROPOSED USE: BORROW PIT (SAND & GRAVEL)
PARKING CALCULATIONS
REQUIRED:
1SPACE/PER EMPLOYEE X 10 EMPLOYEES: 10 SPACES
PROPOSED:
10 SPACES (INCLD H.C.)
STREETSCAPE CALCULATIONS
REQUIRED:
1 TREE PER 50 FT FRONTAGE X 863 FT = 18 TREES
PROPOSED:
18 TREES
PROPOSED MINING AREAS
PIT 14.8 AC
PLANT SITE 2.0 AC
UNDISTURBED BUFFER 8.3 AC
OTHER MISC. AREA 8.6 AC
(BERMS, TEMP. DIVERSIONS, ETC.)
TOTAL PROJECT AREA 33.7 AC
LEGEND
CONDITIONAL USE
PERMIT BOUNDARY
WETLAND
PROPOSED PIT
BUFFER
PLANT SITE
AFFECTED AREA
CREEK
BERM
t /t
GARRETT, SAMUEL L;
GARRETT, RENATA R I
PIN:0454-72-4186
ZONED:RR
CCUPIED HOUSE 100-YR FLOOD PLAIN (TYP)
990 FI�FR M PIT PER NC FRIS DATA
C
l
I / 10'x70' NCDOT SITE TRIANGLE (TY
I
100 FT MIN UNDISTURBE s78° 40' 01"w
POW) SHANNON MENDENHALL / VEGETATIVE BUFFER (TYP) 84.13'
/ PIN:0454-70-5583 (\
GENERAL NOTES:
I 1.
EXISTING TOPO IS STATE LIDAR FROM CUMBERLAND COUNTY GIS DATA.
2,
BOUNDARY SURVEY PER PLAT PREPARED BY JEFFREY B. RIDDLE PLS-3653 DATED 8-8-2020,
3.
STREAM AND WETLAND LOCATIONS BASED ON USGS MAPPING AND NATIONAL WETLAND INVENTORY.
4.
ALL EXCAVATIONS SHALL BE MINIMUM 200 FT FROM ALL STREAMS PER SECTION 919 QUARRY OF
HALL, MARGARET H
THE CUMBERLAND COUNTY ZONING ORDINANCE.
PIN: 0454-93-0590
5.
SITE TO BE RECLAMATED TO MEET CUMBERLAND COUNTY SECTION 919 QUARRY AND THE NCDEQ
ZONED: RR
MINE PERMIT RECLAMATION BOND REQUIREMENTS. SEE PHASE RECLAMATION PLANS.
6.
I
AS PART OF THE NCDEQ MINE PERMIT THE OWNER IS REQUIRED TO BOND THE RECLAMATION OF
THE AFFECTED AREA OF PROJECT BASED ON THE STATE MINING PROGRAM REQUIRED AMOUNTS.
MURDOCK LLC
7.
THE TEMPORARY ERECTION AND OPERATION OF PLANTS AND EQUIPMENT SHALL COMPLY WITH THE
PIN: 0454-83-2179
DISTRICT DIMENSIONAL REQUIREMENTS OF THE M(P) ZONING DISTRICT.
ZONED: RR
STREETSCAPE (TYP)
8.
DUST SUPPRESSION ON ACCESS ROADS AND PLANT SITE SHALL MEET THE STANDARDS SET FORTH
SHADE TREE 50 FT SPACING
IN THE NCDEQ MINE PERMIT AND SECTION 919 QUARRY OF THE CUMBERLAND COUNTY ZONING
863 FT FRONTAGE = 18 TREES
30' WIDE SITE ACCESS
SEE LANDSCAPE TABLE
ORDINANCE.
W/ GATE (TYP)
9.
A PROPOSED 50 FOOT MINIMUM UNDISTURBED BUFFER WITH AN ADDITIONAL 50 FT WIDE x 6.25 FT
NCDOT DRIVEWAY PERMIT REQUIRED
HIGH VEGETATED BERM FOR A TOTAL OF 100 FOOT MINIMUM BUFFER WILL BE MAINTAINED
SEE INSET "A"
BETWEEN THE EXCAVATION AND PLANT SITE AREAS AND ANY ADJOINING PROPERTY BOUNDARY.
10.
EXISTING TREE LINE ALONG GAINEY ROAD IS COMPRISED OF OPEN FIELD AND MIXED PINE AND
HARD WOOD ADJACENT TO RIGHT OF WAY. ANY EXISTING VEGETATION THAT MEETS THE
s78° 13' 27"w
REQUIREMENTS OF SECTION 1102N SHALL BE LEFT IN PLACE AND ALL AREAS THAT DO NOT MEET
84.54'
s77° 32' 41"w
OCCUPIED HOUS
THE REQUIREMENT SHALL BE PLANTED IN ACCORDANCE WITH THE ZONING ORDINANCE AS SHOWN
82.40'
887 FT FROM PIT
ON PLAN
f HARRIS, N BRIAN — CCUPIED HOUSE
GILLIS, DAVID MILLER; PI 69 ZONED: RR s78° 57' 2o"w HAYNER, TERRY; 564 FT FROM PIT
ZONED: RR
GILLIS, SUZANNE I 612.80' + SABRINA
IGHT, DAVID C PIN: 0454-62-9792 OUT BUILDIN \ - ' xxxx PIN: 0454-91-0435 zzX...
PIN: 0454-61-7585 ZONED: RR
\ ZONED: Al OCCUPIED HOUS
I CCUPIED HOUSE 720 FT FROM PIT
1308 FT FROM PIT
I
f
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PAGE, REBECCA S
LIFE ESTATE
PIN:0454-61-6142
/ ZONED: Al
i
HERNDON, MICHAEL E &jWIFE
PIN: 0454-71-630 ,
:
�] ZONED: Al
OCCUPIED HOU: LL��
532 FT FROM F
PAGE, GEORGE R
PIN:0454-61-9148
ZONED: Al
CCUPIED HOUSE
1118 FT FROM PIT
BUILDING
OCCUPIED H
523 FT FRO
ED HOUSE
1277 FT FROM PIT
l PAGE, GEORGE R
I PIN:0454-60-7823
ZONED: Al
S
1
1
1
1
150 0
BAR
BAR
SHE
PAGE, JAMES R
PIN:0454-60-8114
ZONED: Al
\ CCUPIED HOUSE
1195 FT FROM PIT
UT BUILDING
/ � I
I
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150 300 450
Scale: 1" = 150'
z
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...................BURNEY, SIMON FRANKLIN;BURNEY,
........ .....:::.:: wlw PIN:0464-112537
w \ w w w w w % ZONED: Al
......nnnn::: +++++++++ .,o co y y y .. .. .................... nn n "%+ + + + + + +.%
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/ +++ / // // / ,FLAN SDI �// / // // +++ :::: \ W w w w W w w w w w l PIN: 0454 1 3479
+++ / // // // // 2.O AC +/- // // // // } + } } ..... I ZON D. Al I
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ANDRESS, DENNIS G;ANDRESS, RACHEL L
_ +++ + + • x_2aa I w w w w I I w w w
PIN:0464-01-0330
+ + + �
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ZONED: Al
Iz......... + / / / + + + + + + + + + �'cr �/w wwwWwww �wwWwww
+ + + to / / + + + + + + + cr 9 W
+ D +++++ + + + + + + + + ++ ++,nxx: �w wwwww/ www
+ < + + + + + + 0' WIDE + + w w w w w w w w
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u....
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`... + + + +z uu°°uu•„ VEGETATIVE BERM TYP
+ + ,,..�u..4„ (TYP) PIN:0454-90-3920
I%..u. + + + +..�. H=6.25 FT ZONED: Al
+ + + . . BVJ=50 FT
.... + + + + .."uu.:
+ + + % %;"" ""�"" w SIDE SLOPES= 4:1
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':...: ..
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+ ++ + xu, uu, u,,,,,w� VE EIAT'IVE BUFFER(I P) +OF 00, + + xx� xxu uu u•'."N",. M w
N`u: + + +z `:`ruu xuuu:: 6 �w w w w��—WETLANDS (TYP)
+++ T +++ ::u? uuu: z PER NATIONAL WETLAND INVENTORY
++++ 00"/14.8 AC +/- +++ % . .........
„ + + ::::uun w w
++ + ;. .......... W W
+ + +% W W
+ + + +%�uu°°°"""°°°.nx w w w SMITH, DIANE DUMONT
+ ++ W w w W w W PIN:0454-90-7786
x+ + + +
+++ ++}u+ :1 ..x%...% / W w w w W w w w W w w w ZONED: Al
.+ + ++ ........ w w w w w w
+ ++ w W w w W w
.++ ++%......%% WWWWWWWi
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VEGETATI E BERM (TYP +++ +++
I ' H=6.25FT + + + + z WwwwWwwwWww
+ + +
BW=50 FT + + +
SIDE SLOPES= 4:1 + ++ w W w w W w
+ +00, 00, + + ••
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VEGETATI E BUFFER (TYP) +++ +++++++++ +++ Y ""' w w w w w w w w w /
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+ + +.:� ..+ + +
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JACK/SON, JOSHUA;JACKSON, ERIKAx. x + �.. lw
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\ I PIN: 0454-70-5583 . + + + :' .. u u . + + + + + + u .. % .
+ + + + .. �u.u. + + + +
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} } } `,zzzzz zzzzz w\
+ + + + z zzzzzzzzz zzzzzz /
+ + + zzuzzwzz zzzzz
+ + + + + + zuuruuu "' z/
++++ + ++++++++ ::Nfo° o ! 0 FT MIN UNDISTURBED
+ + + + + + ;;; ° ` �p0� 63 w VEGETATIVE BUFFER (TYP) ROPERTY/PERMIT BOUNDARY (TYP)
+ + + + + + + ::.... / w .. w .. w W PER JEFFREY B. RIDDLE PLS SURVEY PLAT
I + + + + + + %%%% w DATED AUGUST 8, 2020
++++++ x/ rW w,
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WETLANDS (TYP)
\ / I LIMIT OF DISTURBANCE (TYP ;;;;•••/ w w w W w w w PER NATIONAL WETLAND INVENTORY
25.5 AC
/ PROPERTY/PERMIT BOUNDARY (TYP w w w w w w
\ 33.7 AC +/-
/ SEE NOTE 2
/ PROJECT INCLUDES PARCELS
00-YR FLOOD PLAIN (TYP) .
'ER NC FRIS DATA
ITZEL, JEFFREY B
)IN: 0453-57-8234
ZONED: Al
ALL OF PARCEL:
MURDOCK LLC
PIN: 0454-80-5682
ZONED: Al
PORTION OF PARCEL:
MURDOCK LLC
PIN:0454-83-2179
ZONED: Al
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FOX, RICHARD LAUMAN II & WIFE
PIN: 0463-09-6108
ZONED: Al
REQUIRED PLANTINGS
SPECIES
COMMON NAME
TOTAL
LARGE TREE
RED MAPLE/PIN OAK
18
OCCUPIED HOUS
1156 FT FROM PIT
SHOP BUILDING
FOX, RICHARD LAUMAN II & WIFE
PIN:0463-09-6108
ZONED: Al
SITE ACCESS
— W/GATE
30.0' WIDE ACCESS ROAD (TYP N + +
ASPHALT/CONCRETE PAVEMENT
HEAVY DUTY 30.0 + + + +
+ + + + +
+ + + + + + +
+ + + + + + + + +
+ + + + + + + + +
+ + + + + + + + + + +
+ + + + + + + + + + +
+ + + + + + + + + +
+ + + + + ° o +
+ + SCALE + +
++
A +
SCALE HOUSE/OFFIC
+
H.C. SIG
240' + +
6 0' +
+
INE MATERIAL
HANDICAP RAMP (TYP
+ +
STORAGE AREA
+
+
TURN DOWN SIDEWALK (TYP
+
30' HAUL ROAD (TYP)
+
+
PIT ACCESS
+ /+
+ + + +
+ + + + +
+
+++++++
+++
+
+ + + +
+ + + + + +
+ + + ++
+ + + +
30.01 + +
+
INSET "A"
TYPICAL SITE ENTRANCE & SCALE HOUSE/OFFICE W/PARKING
SCALE: 1 "=80'
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina
27330
[phone] phone
[e-mail]
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NOT FOR CONSTRUCTION
Scale:
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Sheet:
Designed by:
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Reviewed by:
MTB
Project Number:
Date:
DDS JOB #: 2020-21
DEC 2020
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SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina
27330
[phone] phone
[e-mail]
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Sheet:
Designed by:
MTB
C3 of
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Reviewed by:
MTB
Project Number:
Date:
DDS JOB M 2020-21
DEC 2020
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CONSTRUCTION SEQUENCE MINING ACTIVITY
PHASE 1
1. PRIOR TO COMMENCEMENT OF CONSTRUCTION ACTIVITIES CONTACT NCDEQ LAND QUALITY SECTION [phone].
2. INSTALL CONSTRUCTION ENTRANCE ON GAINEY ROAD.
3. INSTALL SILT FENCE ALONG ACCESS ROAD PER PLAN.
4. INSTALL SILT FENCE BELOW ALL DISTURBED AREAS WITH SILT FENCE OUTLETS PER PLAN.
5. INSTALL SEDIMENT BASINS. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL BASINS. MAINTAIN
SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL GOOD GROUND COVER IS ESTABLISHED.
6. INSTALL TEMPORARY DIVERSIONS. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD
GROUND COVER ON FILL SLOPES IS ESTABLISHED.
7. INSTALL SILT FENCE PER PLAN BELOW ALL PERMANENT/TEMPORARY DIVERSIONS AND BASIN/TRAPS W/ SILT FENCE OUTLETS IN LOW
AREAS PER PLAN.
8. INSTALL PLANT SITE W/ BERMS AND BEGIN REMOVAL OF OVERBURDEN FROM PIT.
9. INSTALL PERMANENT AND TEMPORARY BERMS AROUND PIT.
10. ONCE BERMS ARE COMPLETE AROUND PLANT SITE AND STAGED EXCAVATION AREA AND ARE STABILIZED AND SEEDED. MAINTAIN SILT
FENCE UNTIL THIS ACHIEVED. REMOVE TEMPORARY DIVERSIONS AND TEMPORARY SKIMMER BASINS ONCE POSITIVE DRAINAGE IS
ACHIEVED TO THE PIT. MAINTAIN ALL DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED.
11. ONCE GOOD GROUND COVER IS ESTABLISHED AND NO RUTTING OF SLOPES IS OCCURRING REMOVE ALL EROSION CONTROL MEASURES
WHILE MAINTAINING SILT FENCE ON DOWNSTREAM SIDE.
12. DEWATER ALL SEDIMENT BASINS AND SKIMMER BASINS FOR MAINTANANCE AND REMOVAL WITH SILT BAG PER DETAIL, IF NEEDED.
13. MAINTAIN SILT FENCE AFTER MAJOR RAIN EVENTS.
14. STABILIZE AND SEED ALL DENUDED AREAS IN WHICH WORK WILL NOT RECOMMENCE WITHIN 7 WORKING DAYS OR 14 CALENDAR DAYS.
15. CALL NCDEQ LAND QUALITY SECTION FOR INSPECTION [phone].
PHASE 2
1. BEGIN MINING ACTIVITIES.
2. AS EXCAVATION AREA IS EXPANDED POSITIVE DRAINAGE TO BE MAINTAINED TO EXCAVATION PIT.
3. TEMPORARY SEED STOCKPILE AREAS THAT WILL BE DENUDED FOR 30 DAYS OR MORE.
4. MAINTAIN ALL EROSION CONTROL DEVICES WEEKLY AND AFTER MAJOR STORM EVENTS.
5. CALL NCDEQ LAND QUALITY SECTION FOR INSPECTION [phone].
2:1 MAX SIDE SLOPES (TYP)
SILTFENCE (TYP)
F_ SF SF SF SF SF SF SF SF SF
LL NOTES:
In STABLIZE AND SEED ALL SLOPES PER
2 FT SAFETY BERM (TYP) NCDEQ STANDARDS
FOR TIME FRAMES FOR DENUDED SLOPES
INSTALL SILT FENCE PER SILT FENCE
TOPSOIL STOCKPILE (TYP) Cn DETAIL
n
TOPSOIL SHALL BE PLACED WITH 3.1 MAX
SLOPES
I Cn ALL SLOPES SHALL BE STABILIZED AND
PERMANENTLY SEEDED AT 10 FT HEIGHT
LL
U)
=IS =IS =IS =IS =IS AS AS AS AS
LEGEND
PERMIT BOUNDARY
EXISTING CONTOUR
WETLAND
BUFFER
AFFECTED AREA
CREEK
BERM
POND
EROSION CONTROL LEGEND
SEDIMENT BASIN
ROCK CHECK DAMS
SILT FENCE
TEMPORARY DIVERSION DITCH
OUTLET PROTECTION
J-HOOK W/ SILT FENCE OUTLET
SILT FENCE OUTLET
TOP OF BERM
WIER E
SF
STOCKPILE AREA (TYP)
NTS
01AV
VEGETATED BERMS:
1. PUSH TOPSOIL AND UNSUITABLE MATERIAL TO CREATE BERMS. CAP BERMS WITH TOPSOIL.
2. TRACK IN SLOPES TO ENSURE COMPACTION TO PREVENT EROSION. STABLIZE AND SEED IMMEDIATELY
3. STRAW AND NET OR HYDROSEED SLOPES TO ENSURE SEED CONTACT WITH GROUND AND
GERMINATION.
4. DURING GRASS ESTABLISHMENT PERIOD, INSPECT AFTER EVERY RAINFALL.
5. AFTER GRASS HAS ESTABLISHED, INSPECT PERIODICALLY AND AFTER HEAVY RAINFALL. IMMEDIATELY
MAKE REPAIRS.
6. PAY CLOSE ATTENTION TO STEEP SLOPE AREAS BERM ENDS AND BERMS WITH DOWNHILL SLOPES
BELOW BERM.
7. GRASS SHOULD BE MAINTAINED IN A HEALTHY VIGOROUS CONDITION AT ALL TIMES, SINCE IT IS THE
PRIMARY EROSION PROTECTION.
UIJ I UFCCSCU HFCCHJ
TAILINGS/SEDIMENT PONDS
0.4 AC
STOCKPILES
1.4 AC
PROCESSING AREA/HAUL ROADS
1.0 AC
MINE EXCAVATION
14.8 AC
OTHER MISC EXCAVATION
7.9 AC
(BERMS, DIVERSIONS, ETC.)
TOTAL AFFECTED AREA
25.5 AC
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EXTERNAL DRAINAGE=4.7 AC
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NOTES:
RAFTING AND DESIGN O
1. TYPICAL MAX EXCAVATION AREA IS THE TYPICAL MAX AREA BEING MINED AT ONE TIME. RECLAMATION WILL BE A
PART OF THE MINING ACTIVITIES IN THIS AREA. WASTE (OVERBURDEN) MATERIAL WILL BE PLACED BACK IN THE SERVICES, INC.
I EXCAVATION PER SECTION 919 QUARRY WHICH IS SHOWN IN THE RECLAMATION PLAN FOR EACH PHASE.
2. EXCAVATION STAGE BERM TO BE IN PLACE PRIOR TO REMOVAL OF MATERIAL. AS THE EXCAVATION PROGRESSES
\ TO THE PROPOSED MAXIMUM PIT SIZE THE BERM SHALL BE MOVED TO PROTECT THE AREA BEING EXCAVATED. 6728 Carbonton Road
THE BERM SHALL BE STABILIZED AND VEGETATED IMMEDIATELY. Sanford, North Carolina 27330
\ 3. PROPOSED PERMANENT BERM SHALL BE CONSTRUCTED TO ENCOMPASS EXCAVATION AREA THROUGHOUT
I EACH STAGE. [phone] phone
4. STREAM AND WETLAND LOCATIONS BASED ON USGS MAPPING AND NATIONAL WETLAND INVENTORY. [e-mail]
I I
ROCK CHEC DAM (TYP
JCTION ENTRANC
i
60 LF 18" RCP @ 1.0%
MATCH EXISTING DITCH
_T FENCE (TYP II
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+ + \ TD #2 + + \
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BARREL _ W W W /� 5 AC AGENCY REVIEW ONLY
EMERGENCY + + + + + +
SPILLWAY + + + C SILT FENCE OUTLET (TYP) \ \ NOT FOR CONSTRUCTION
+ + + �� \
+ + + + ++r++++
+ + + I OINT SOURCE DISC ARGE #1 I Scale: Drawn by:
+ + / LAT: N34° 57' 32.98" I MTB
LONG: W78° 48' 16.14" I 1 "=100'
N:440111.5136
E: 2058580.9158 I I I I Sheet: Designed by:
MAX FLOW=56.96 CFS/I I I I MTB
OUTLET PROTECTIO I
La=12' W W W I Reviewed by:
W=6 / 100 0 100 200 300 C4 of 11 MTB
� d=18" W W W/ I
STONE O=CLASS B �tIP RAP W W W W / Project Number: Date:
/ / DDS JOB #: 2020-21
Scale: 1" = 100' DEC 2020
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NOTES:
1. EXISTING TOPO IS STATE LIDAR FROM CUMBERLAND COUNTY GIS DATA.
2. STREAM AND WETLAND LOCATIONS BASED ON USGS MAPPING AND NATIONAL WETLAND INVENTORY.
3. SITE TO BE RECLAMATED TO MEET CUMBERLAND COUNTY SECTION 919 QUARRY AND THE NCDEQ MINE PERMIT
RECLAMATION BOND REQUIREMENTS.
4. AS PART OF THE NCDEQ MINE PERMIT THE OWNER IS REQUIRED TO BOND THE RECLAMATION OF THE TOTAL
PROJECT BASED ON THE STATE MINING PROGRAM REQUIRED AMOUNTS.
5. TOPSOIL STOCKPILE MATERIAL SHALL BE USED TO PROVIDE FERTILE SOIL DURING RECLAMATION TO AID IN THE
ESTABLISHMENT OF PERMANENT GROUND COVER. UNUSED TOPSOIL MATERIAL IN THE STOCKPILE AREAS SHALL
BE REGRADED PER DETAIL TO PROVIDE STABLE SLOPES. ALL SLOPES SHALL BE PERMANENTLY STABILIZED AND
SEEDED.
4 BERM 4
SLOPE ABOVE WATER LINE
SLOPE BELOW WATER LINE AT MIN 20'
ND 10' VERTICAL DISTANCE
JUDED AREAS ABOVE WATER LINE TO
=TATED PER SECTION 919 QUARRY OF
ORDINANCE.
PIT SIDE WALL RECLAMATION (TYP)
0
BERM
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NTS
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100-YR FLOOD PLAIN (TYP) I
I / PER NC FRIS DATA
r II I
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1. PUSH TOPSOIL AND UNSUITABLE MATERIAL TO CREATE BERMS. CAP BERMS WITH TOPSOIL. I \
2. TRACK IN SLOPES TO ENSURE COMPACTION TO PREVENT EROSION. STABILIZE AND SEED IMMEDIATELY.
3. STRAW AND NET OR HYDROSEED SLOPES TO ENSURE SEED CONTACT WITH GROUND AND GERMINATION. \
4. DURING GRASS ESTABLISHMENT PERIOD, INSPECT AFTER EVERY RAINFALL.
5. AFTER GRASS HAS ESTABLISHED, INSPECT PERIODICALLY AND AFTER HEAVY RAINFALL. IMMEDIATELY MAKE REPAIRS. I I
6. PAY CLOSE ATTENTION TO STEEP SLOPE AREAS BERM ENDS AND BERMS WITH DOWNHILL SLOPES BELOW BERM. I
7. GRASS SHOULD BE MAINTAINED IN A HEALTHY VIGOROUS CONDITION AT ALL TIMES, SINCE IT IS THE PRIMARY EROSION PROTECTION.
BERM TYP /
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PLANT SITE 2.0 AC
UNDISTURBED BUFFER 8.3 AC I \ \
OTHER MISC. AREA 8.6 AC
(BERMS. TEMP. DIVERSIONS. ETC.) f I I
TOTAL PROJECT AREA 33.7 AC
LEGEND
PERMIT BOUNDARY I
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RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina
27330
[phone] phone
[e-mail]
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
Drawn by:
MTB
1"=100'
Sheet:
Designed by:
MTB
C5 of
11
Reviewed by:
MTB
Project Number:
Date:
DDS JOB #: 2020-21
DEC 2020

MAINTENANCE PLAN
THE OPERATOR IS RESPONSIBLE FOR MAINTAINING EROSION CONTROL DEVICES THROUGHOUT THE PROJECT DURATION.
ALL EROSION AND SEDIMENT CONTROL DEVICES SHALL BE CHECKED FOR STABILITY AND OPERATION FOLLOWING EVERY RUNOFF -PRODUCING
RAINFALL BUT IN NO CASE LESS THAN ONCE EVERY WEEK. ANY NEEDED REPAIRS SHALL BE MADE IMMEDIATELY TO MAINTAIN ALL DEVICES AS
DESIGNED.
BASINS:
1. BASINS ARE TO BE CLEANED OF SEDIMENT WHEN ITS STORAGE CAPACITY IS REDUCED BY 50%. PLACE SEDIMENT REMOVED FROM THE
BASIN IN A STOCKPILE AREA AS SHOWN ON THE PLAN OR AN AREA THAT HAS ADEQUATE EROSION CONTROL MEASURES.
2. CHECK BERM STRUCTURE, SPILLWAYS, AND SKIMMER PIPE EVERY WEEK FOR EROSION AND PIPING.
3. MAINTAIN BAFFLES AS DIRECTED BELOW.
4. ANY RIP RAP DISPLACED FROM SPILLWAY MUST BE REPLACED IMMEDIATELY.
5. AFTER ALL AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE BASIN (PHASE 2 OF CONSTRUCTION SEQUENCE) AND ALL UNSTABLE
SEDIMENT. GRADE ACCORDING TO GRADING PLAN OR BLEND IN WITH ADJACENT GRADES - ADDITIONAL COMPACTION EFFORTS MAY BE
REQUIRED IF STRUCTURE IS PROPOSED FOR THAT AREA. STABILIZE AREA.
BAFFLES:
1. MAINTAIN ACCESS TO BAFFLES. SHOULD THE FABRIC COLLAPSE, DECOMPOSE, TEAR, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
2. REMOVE BUILDUP SEDIMENT WHEN IT REACHES ONE-HALF FULL. TAKE CARE NOT TO DISTURB BAFFLES DURING CLEANOUT.
SILT FENCE:
1. SEDIMENT SHALL BE REMOVED FROM BEHIND THE SEDIMENT FENCE WHEN IT BECOMES ABOUT 0.5 FT DEEP AT THE FENCE. THE FENCE
SHALL BE REPAIRED AS REQUIRED TO MAINTAIN A SUFFICIENT BARRIER.
2. SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, DECOMPOSE, TEAR, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
3. AFTER ALL AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT. GRADE AREA
TO GRADING PLAN OR BLEND WITH ADJACENT GRADES. STABILIZE AREA.
TEMPORARY DIVERSIONS:
1. IMMEDIATELY REMOVE EXCESS SEDIMENT FROM FLOW AREA AND REPAIR DIVERSION RIDGE.
2. CAREFULLY CHECK OUTLETS AND MAKE TIMELY REPAIRS AS NEEDED.
3. AFTER ALL AREAS HAVE BEEN STABILIZED REMOVE THE RIDGE AND THE CHANNEL AND GRADE ACCORDING TO GRADING PLAN OR
BLEND WITH ADJACENT GRADES. STABILIZE AREA.
RIP RAP LINED DITCHES/CHANNELS/OUTLETS:
1. PAY CLOSE ATTENTION TO INLET AND OUTLET SECTIONS WHERE CONCENTRATED FLOW ENTERS.
2. INSPECT FOR INDICATIONS OF PIPING, SCOUR HOLES, OR BANK FAILURES. MAKE REPAIRS IMMEDIATELY.
3. MAINTAIN VEGETATION ADJACENT TO THE ROCK LINING IN A HEALTHY, VIGOROUS CONDITION TO PROTECT THE AREA FROM EROSION
AND SCOUR.
GRASS LINED DITCHES/CHANNELS/SWALES:
1. DURING GRASS ESTABLISHMENT PERIOD, INSPECT AFTER EVERY RAINFALL.
2. AFTER GRASS HAS ESTABLISHED, INSPECT PERIODICALLY AND AFTER HEAVY RAINFALL. IMMEDIATELY MAKE REPAIRS.
3. PAY CLOSE ATTENTION TO INLET AND OUTLET SECTIONS WHERE CONCENTRATED FLOW ENTERS.
4. GRASS SHOULD BE MAINTAINED IN A HEALTHY VIGOROUS CONDITION AT ALL TIMES, SINCE IT IS THE PRIMARY EROSION PROTECTION.
VEGETATED BERMS:
1. DURING GRASS ESTABLISHMENT PERIOD, INSPECT AFTER EVERY RAINFALL. (INSTALL STRAW/NETTING OR HYDROSEED SLOPES)
2. AFTER GRASS HAS ESTABLISHED, INSPECT PERIODICALLY AND AFTER HEAVY RAINFALL. IMMEDIATELY MAKE REPAIRS.
3. PAY CLOSE ATTENTION TO STEEP SLOPE AREAS BERM ENDS AND BERMS WITH DOWNHILL SLOPES BELOW BERM.
4. GRASS SHOULD BE MAINTAINED IN A HEALTHY VIGOROUS CONDITION AT ALL TIMES, SINCE IT IS THE PRIMARY EROSION PROTECTION.
TEMPORARY SEEDING SCHEDULE
WINTER & EARLY SPRING
Seeding mixture
Species Rate (lb/acre)
Rye (grain) 120
Annual lespedeza (Kobe in
Piedmont and Coastal Plain,
Korean in Mountains) 50
Omit annual lespedeza when duration of temporary cover is not to
extend beyond June.
Seeding dates
Mountains —Above 2500 feet: Feb. 15 - May 15
Below 2500 feet: Feb. 1- May 1
Piedmont —Jan. 1 - May 1
Coastal Plain —Dec. 1 -Apr. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 lb/acre ground
agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
immediately following erosion or other damage.
PERMANENT SEEDING SCHEDULE
SOURCE: NCDEQ EROSION CONTROL MANUAL 6.1lb
TEMPORARY SEEDING SCHEDULE
FALL
Seeding mixture
Species Rate (Ib/acre)
Rye (grain) 120
Seeding dates
Mountains —Aug. 15 - Dec. 15
Coastal Plain and Piedmont —Aug. 15 - Dec. 30
Soil amendments
Follow soil tests or apply 2,000 lb/acre ground agricultural limestone
and 1,000 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Repair and refertilize damaged areas immediately. Topdress with 50
lb/acre of nitrogen in March. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 lb/acre Kobe (Piedmont and
Coastal Plain) or Korean (Mountains) lespedeza in late February or
early March.
HERBACEOUS PLANTS -Seeding recommendations for primary stabilization
Successful development depends on planting date (effectiveness goal: 6 mo. - 3 yrs. without an ongoing maintenance program) Table 6.11.b
unu Mwr!Vc Tteer•ree
—
Optimal Plantin 3 Dates
Common Name
Botanical Name !
Cultivar
Native /
introduced
Broadcast
Seeding
Rates
Ibs/acm
Fartilization/
limestone
Ibslacre
Mountains
Piedmont
Coastal
Plains
SunlShade
tolerant
Wetlands
Riparian
Buffers
Invasive
Yesorho
Installation / Maintenance
Considerations
Other information, commentary
Sericea Lespedeza
Lespedeze cuneata
1
15 lbs
By soil test
911 - 6/1
9/1 -511
10/1-4/1
Sun
NR
NR
Yes
Responds wall to controlled
burns
Severe Threat
Invasive species
-
-----LHightycompatitive,-------
-- --
- --- ---
Crown Vetch
--------
Secu ' era varia
- ---
I
-- -
15 Ibs
- --
B soil Pest
-_—.
3l15-4/30
-._-...---
NR
NR
--
Sun
--
NR
NR
Yes
neutral so
Prefers neutral soNs
------"-"--
----
---
-
-
-
--Ian
ecommended
acceptable aflematfve
is not available.
Centie�de Grass
Eremoch/oa ophiuroi.I
5 Ibs
Boil test
NR_
Eastern
9/1 .511
Sun
_ NR
NR -_
No
Si nifim nt maintenance -
Dces not tolerate high ttafriic___
10 Ibs. for road shoulders
onl
mayberequirecitu obtain
Acceptable for sodding
desired cover
KY 31 Tall Fescue
Schedonorus phoeni
I
100 Ibs
8 soil test
8/15-6l1
9/1-4/15
9/30-3/15
Sun!
NR
NR
Yes
If utilized, it is imperative
Acceptable for soddin
Festuca arundmacea
mod. Shade
that maintenance includes
a containment pim
I
15lbs
Bsod-est
U155/1
-utli-ed,it
-
-- ---
Blue Grass
Poa ratensis
sim eratve
Prefersneutralne—utral s-oi-s,-highlyKY
that maintenance indudes
corn etitive, not recommended
a containment plan
unless an acceptable alternative
-
-------
is not available.
--
--
---- --
Acce table for sodding
Hard Fescue
Festuca kTvipfla -
I
15 Ibs
Bay soil test
311 - 6/1
NR
NR
Shade
NR
NR _
_- No _
Not recommended for
Low" growing, bunchgrass -
frestuca to ifolia
-
slopes greater than 5%
Bermuda Grass
C rrodon dac on
I
25lbs
B soil test
NR
4115 fi(30
4/15 6/30
Sun
NR
NR
Yes
If utilized, a Is imperative
Extreme aggressive, sh, not
that maintenance includes
recommended and should be
a comain-Lp an -
avoided unless an acc�!ptable
alternative Is not available.
May be sodded or spr__gged
TEMPORARY SEEDING
PROVIDE TEMPORARY SEEDING TO ALL DENUDED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN THE FOLLOWING SCHEDULE:
PERMANENT DITCHES --> IMMEDIATELY (ROCK LINED)
SLOPES 4:1 OR STEEPER --> 7 DAYS
ALL OTHER AREAS --> 14 DAYS
IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8 INCHES.
SEEDBED PREPARATION:
LIME: APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. IF THE SOIL PH IS NOT KNOWN, APPLY AT A RATE OF 1 TO 1 %2 TONS PER
ACRE ON COARSE -TEXTURED SOILS AND 2-3 TONS PER ACRE OF FINE -TEXTURED SOILS. APPLY LIME UNIFORMLY AND INCORPORATE INTO
THE TOP 4-6 INCHES OF SOIL. SOILS WITH PH HIGHER THAN 6 DO NOT NEED LIME.
FERTILIZER: FERTILIZE ACCORDING TO SOIL TEST RECOMMENDATIONS. WHERE SOIL TESTS ARE NOT AVAILABLE, APPLY A 10-10-10 GRADE
FERTILIZER AT 700-1,000 LB/ACRE. INCORPORATE FERTILIZER INTO THE TOP 4-6 INCHES OF SOIL. IF A HYDRAULIC SEEDER IS USED, DO NOT
MIX SEED AND FERTILIZER MORE THAN 30 MINUTES BEFORE APPLICATION.
SURFACE ROUGHENING: IF AREAS TO BE SEEDED BECOME HARDENED, SEALED, OR CRUSTED, LOOSEN IT JUST PRIOR TO SEEDING BY
DISKING, RAKING, HARROWING OR OTHER SUITABLE METHODS. GROOVE OR FURROW SLOPES STEEPER THAN 3:1 ON THE CONTOUR
BEFORE SEEDING.
PLANT SELECTION:
SELECT THE APPROPRIATE SPECIES BASED ON THE PLANTING SEASON.
SEEDING:
APPLY SEED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER. USE SEEDING RATES GIVEN IN TABLES.
BROADCAST SEEDING AND HYDROSEEDING IS ACCEPTABLE ON STEEP SLOPES WHERE EQUIPMENT CANNOT BE DRIVEN. HAND
BROADCASTING IS NOT RECOMMENDED.
SMALL GRAINS SHOULD BE PLANTED NO MORE THAN ONE INCH DEEP AND GRASSES AND LEGUMES ON MORE THAN Y INCH. BROADCAST
SEED MUST BE COVERED BY RAKING OR CHAIN DRAGGING, AND THEN LIGHTLY FIRMED WITH A ROLLER OR CULTIPACKER. HYDROSEEDED
MIXTURES SHOULD NOT INCLUDE A WOOD FIBER MULCH.
MULCHING:
MULCHING IS REQUIRED FOR ALL TEMPORARY SEEDING AT A MIN RATE OF 2 TONS/ACRE WITH ASPHALT TACK.
MAINTENANCE:
CONTRACTOR TO MONITOR GRASS ESTABLISHMENT. PROMPTLY RESEEED AREAS WHERE A HEALTHY, DENSE GROWTH DOES NOT
ESTABLISH. CONTRACTOR MAY NEED TO PROVIDE NETTING OR TEMPORARY LINERS TO AREAS WHERE GRASS CANNOT BE ESTABLISHED
DUE TO EROSION.
TEMPORARY SEEDING SCHEDULE
SUMMER
Seeding mixture
Species Rate (lb/acre)
German millet 40
In the Piedmont and Mountains, a small -stemmed Sudangrass may be
substituted at a rate of 50 lb/acre.
Seeding dates
Mountains —May 15 - Aug. 15
Piedmont —May 1 -Aug. 15
Coastal Plain —Apr. 15 -Aug. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 lb/acre ground
agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
immediately following erosion or other damage.
a
a
HERBACEOUS PLANTS -Seeding recommendations for primary stabilization
Successfull development depends on planting date (effectiveness goal: 6 mo. -3yrs. without an ongoing maintenance program) Table 6.11.c
n1ATl\/G CDGr"IGC
PERMANENT SEEDING
SEE SEEDING SCHEDULE FOR SEED TYPE AND RATE.
PROVIDE PERMANENT SEEDING TO ALL DENUDED AREAS THAT WILL NOT BE COVERED BY PAVING, BUILDINGS, OR OTHER LANDSCAPING. AREAS
RECEIVING PERMANENT VEGETATION MUST BE STABILIZED WITHIN THE FOLLOWING TIMEFRAMES AFTER FINAL GRADE IS REACHED, UNLESS
TEMPORARY STABILIZATION IS APPLIED.
PERMANENT DITCHES --> IMMEDIATELY (ROCK LINED)
SLOPES 4:1 OR STEEPER --> 7 DAYS
ALL OTHER AREAS --> 14 DAYS
COMPLETE GRADING BEFORE PREPARING SEEDBEDS. IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8
INCHES.
SEEDBED REQUIREMENTS:
THE SOIL SHOULD MEET THE FOLLOWING MINIMUM CRITERIA FOR VEGETATION ESTABLISHMENT:
• ENOUGH FINE-GRAINED (SILT AND CLAY) MATERIAL TO MAINTAIN ADEQUATE MOISTURE AND NUTRIENT SUPPLY (AVAILABLE WATER
CAPACITY OF AT LEAST 0.05 INCHES OF WATER TO 1 INCH OF SOIL
• SUFFICIENT PORE SPACE TO PERMIT ROOT PENETRATION.
• SUFFICIENT DEPTH OF SOIL TO PROVIDE AN ADEQUATE ROOT ZONE. THE DEPTH OF ROCK OR IMPERMEABLE LAYERS SUCH AS
HARDPANS SHOULD BE 12 INCHES OR MORE, EXCEPT ON SLOPES STEEPER THAN 2:1 WHERE THE ADDITION OF SOIL IS NOT FEASIBLE.
• A FAVORABLE PH RANGE FOR PLANT GROWTH, USUALLY 6.0-6.5.
• NO LARGE ROOTS, BRANCHES, STONES, LARGE CLODS OF EARTH, AND TRASH. CLODS AND STONES MAY BE LEFT ON SLOPES
STEEPER THAN 3:1 IF THEY ARE TO BE HYDROSEEDED.
IF THE ABOVE CRITERIA CANNOT BE MET, SPECIAL SOIL CONDITIONERS OR TOPSOIL MAY BE APPLIED.
SEEDBED PREPARATION:
LIME: APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. IF THE SOIL PH IS NOT KNOWN, FOLLOW RATES ON THE SEEDING SPEC
TABLE.
FERTILIZER: FERTILIZE ACCORDING TO SOIL TEST RECOMMENDATIONS. WHERE SOIL TESTS ARE NOT AVAILABLE, FOLLOW RATES ON THE
SEEDING SPEC TABLE.
SURFACE ROUGHENING: IF AREAS TO BE SEEDED BECOME HARDENED, SEALED, OR CRUSTED, LOOSEN IT JUST PRIOR TO SEEDING BY
DISKING, RAKING, HARROWING OR OTHER SUITABLE METHODS. GROOVE OR FURROW SLOPES STEEPER THAN 3:1 ON THE CONTOUR
BEFORE SEEDING.
PLANT SELECTION:
SELECT THE APPROPRIATE SPECIES BASED ON THE PLANTING SEASON, SOIL TYPE, SLOPES, AND LAND USES. SEE SEEDING SPEC TABLES
IN PLANS FOR RECOMMENDED PERMANENT SEEDING MIXTURE.
SEEDING:
USE CERTIFIED SEED (INSPECTED BY THE NORTH CAROLINA CROP IMPROVEMENT ASSOCIATION).
APPLY SEED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER ON A FIRM, FRIABLE SEEDBED. USE SEEDING
RATES GIVEN IN TABLES.
WHEN USING A DRILL OR CULTIPACKER SEEDER, SMALL GRAINS SHOULD BE PLANTED NO MORE THAN ONE INCH DEEP AND GRASSES AND
LEGUMES ON MORE THAN %2 INCH.
WHEN BROADCAST SEEDING, SUBDIVIDE AREA INTO WORKABLE SECTIONS AND DETERMINE THE AMOUNT OF SEED NEEDED FOR EACH
SECTION. APPLY ONE-HALF THE SEED WHILE MOVING BACK AND FORTH ACROSS THE AREA AND APPLY THE REMAINING SEED IN THE SAME
MANNER BUT AT RIGHT ANGLES TO THE FIRST PASS. COVER SEED BY RAKING OR CHAIN DRAGGING, AND THEN LIGHTLY FIRM WITH A
ROLLER OR CULTIPACKER.
MULCH AREAS IMMEDIATELY AFTER SEEDING IN ACCORDANCE WITH RATES GIVEN IN TABLES. ANCHOR MULCH WITH NETTING OR LIQUID
ASPHALT AT A RATE OF 0.10 GALLON PER SQUARE YARD (10 GAL / 1000 SQ FT).
HYDROSEEDING:
SURFACE ROUGHENING IS REQUIRED. FINE SEEDBED PREPARATION IS NOT NECESSARY.
RATE OF WOOD FIBER APPLICATION SHOULD BE AT LEAST 4,000-6,000 LB/ACRE.
APPLY LEGUME INOCULANTS AT FOUR TIMES THE RECOMMENDED RATE WHEN ADDING INOCULANT TO HYDROSEEDER SLURRY.
APPLY LIME IN DRY FORM.
APPLICATION
STEP 1 -1/3 MULCH RATE, ALL SEEDING AND ALL INOCULANT SPREAD IN ONE DIRECTION
STEP 2 - 2/3 MULCH RATE APPLIED IN OPPOSING DIRECTION
MAINTENANCE:
IF STAND IS INADEQUATE, RE-EVALUATE PLANT CHOICE AND QUANTITIES OF LIME AND FERTILIZER. REESTABLISH THE STAND AFTER
SEEDBED PREPARATION OR OVER -SEED THE STAND. CONSIDER SEEDING TEMPORARY, ANNUAL SPECIES IF THE TIME OF YEAR IS NOT
APPROPRIATE FOR PERMANENT SEEDING.
RAFTING AND DESIGN O
SERVICES, INC_
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
M
TB
Sheet:
Designed by:
MTB
C6 of
11
Reviewed by:
MTB
Project Number:
DDS JOB #: 2020-21
Date:
DEC 2020

NOTE:
NCGO1 PERMIT PROVISIONS HAVE BEEN PROVIDED AS GENERAL GUIDE
WITH MINING OPERATIONS DURING THE CONSTRUCTION PORTION OF
THE PROJECT AS A BEST MANAGEMENT PRACTICE.
HOWEVER, MINING OPERATIONS ARE CURRENTLY EXEMPT FROM THESE
REQUIREMENTS UNDER THE NCG02 PERMIT.
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGO1 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HOW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches, perimeter slopes and HOW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
Temporary Stabilization
Permanent Stabilization
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
• Hydroseeding
• Gectextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4. Provide ponding area for containment of treated Stormwater before discharging
offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers it dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
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BELOW GRADE WASHOUT STRUCTURE
ABOVE GRADE WASHOUT STRUCTURE
CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
NCGOI GROUND STABILIZATION AND MATERIALS HANDLING
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequency
Inspect
(during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is
order
available, record the cumulative rain measurement for those un-
attended days (and this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded as
"zero." The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC
At least once per
1. Identification of the measures inspected,
Measures
7 calendar days
2. Date and time of the inspection,
and within 24
3. Name of the person performing the inspection,
hours ofarain
4. Indication ofwhetherthe measures were operating
event> 1.0 inch in
properly,
24 hours
5. Description of maintenance needs forthe measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
At least once per
1. Identification of the discharge outfalls inspected,
discharge
7 calendar days
2. Date and time of the inspection,
outfalls (SDOs)
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Evidence of indicators of stormwater pollution such as oil
event> 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of visible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
If visible sedimentation is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
hours of a rain
the site limits,
event> 1.0 Inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
At least once per
Ifthe stream or wetland has increased visible sedimentation or a
wetlands onsite
7 calendar days
stream has visible increased turbidity from the construction
or offsite
and within 24
activity, then a record of the following shall be made:
(where
hours of a rain
1. Description, evidence and date of corrective actions taken, and
accessible)
everI 1.0 inch in
2. Records of the required reports to the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit
of this permit.
(6) Ground
After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization
of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be documented in the manner
described:
Item to Document
Documentation Requirements
(a) Each E&SC Measure has been installed
Initial and date each E&SC Measure on a copy
and does not significantly deviate from the
of the approved E&SC Plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC Plan.
E&SC Measure shown on the approved E&SC
Plan. This documentation is required upon the
initial installation of the E&SC Measures or if
the E&SC Measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
Plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
Plan or complete, date and sign an inspection
Plan.
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC Measures
have been performed.
(e) Corrective actions have been taken
Initial and date a copy of the approved E&SC
to E&SC Measures.
Plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation
In addition to the E&SC Plan documents above, the following items shall be kept on the
site
and available for agency inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make this
requirement not practical:
(a) This general permit as well as the certificate of coverage, after it is received.
(b) Records of inspections made during the previous 30 days. The permittee shall record
the required observations on the Inspection Record Form provided by the Division or
a similar inspection form that includes all the required elements. Use of
electronically -available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard -copy records.
(c) All data used to complete the Notice of Intent and older inspection records shall be
maintained for a period of three years after project completion and made available
upon request. [40 CFR 122.411
EFFECTIVE: 04/01/19
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that must be reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(a) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(b) Anticipated bypasses and unanticipated bypasses.
(c) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Division's Emergency Response personnel at [phone], (800)
858-0368 or [phone].
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
e Within 24 hours, an oral or electronic notification.
deposition in a
• Within 7 calendar days, a report that contains a description of the
stream or wetland
sediment and actions taken to address the cause of the deposition_
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d) list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
with the federal or state impaired -waters conditions.
(b) Oil spills and
Within 24 hours, an oral or electronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
• A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
effect of the bypass.
(d) Unanticipated
• Within 24 hours, an oral or electronic notification.
bypasses [40 CFR
• Within 7 calendar days, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect of the bypass.
(e) Noncompliance
• Within 24 hours, an oral or electronic notification.
with the conditions
• Within 7 calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(I)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
I NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING I EFFECTIVE: 04/01/19 1
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C7 of
11
Reviewed by:
MTB
Project Number:
DDS JOB #: 2020-21
Date:
DEC 2020

13
Construction 1- Clear, grub, and strip the area under the embankment of all vegetation and
root mat. Remove all surface soil containing high amounts of organic matter
Specifications and stockpile or dispose of it properly. Haul all objectionable material to the
designated disposal area. Place temporary sediment control measures below
basin as needed
2. Ensure that fill material for the embankment is free of roots, woody
vegetation, organic matter, and other objectionable material. Place the fill in
lifts not to exceed 9 inches, and machine compact it. Over fill the embankment
6 inches to allow for settlement.
3. Shape the basin to the specified dimensions. Prevent the skimming device
from settling into the mud by excavating a shallow pit under the skimmer or
providing a low support under the skimmer of stone or timber.
4. Place the barrel (typically 4-inch Schedule 40 PVC pipe) on a firm, smooth
foundation of impervious soil. Do not use pervious material such as sand,
gravel, or crushed stone as backfill around the pipe. Place the fill material
around the pipe spillway in 4-inch layers and compact it under and around
the pipe to at least the same density as the adjacent embankment. Care must
be taken not to raise the pipe from the firm contact with its foundation when
compacting under the pipe haunches.
Place a minimum depth of 2 feet of compacted backfill over the pipe spillway
before crossing it with construction equipment. In no case should the pipe
conduit be installed by cutting a trench through the dam after the embankment
is complete.
5. Assemble the skimmer following the manufacturers instructions, or as
designed.
6. Lay the assembled skimmer on the bottom of the basin with the flexible
joint at the inlet of the barrel pipe. Attach the flexible joint to the barrel pipe
and position the skimmer over the excavated pit or support. Be sure to attach
a rope to the skimmer and anchor it to the side of the basin. This will be used
to pull the skimmer to the side for maintenance.
7. Earthen spillways -Install the spillway in undisturbed soil to the greatest
extent possible. The achievement of planned elevations, grade, design width,
and entrance and exit channel slopes are critical to the successful operation
of the spillway. The spillway should be lined with laminated plastic or
impermeable geotextile fabric. The fabric must be wide and long enough to
cover the bottom and sides and extend onto the top of the dam for anchoring
in a trench. The edges may be secured with 8-inch staples or pins. The fabric
must be long enough to extend down the slope and exit onto stable ground.
The width of the fabric must be one piece, not joined or spliced; otherwise
water can get under the fabric. If the length of the fabric is insufficient for the
entire length of the spillway, multiple sections, spanning the complete width,
may be used. The upper section(s) should overlap the lower section(s) so
that water cannot flow under the fabric. Secure the upper edge and sides
of the fabric in a trench with staples or pins. (Adapted from "A Manual for
Designing, Installing and Maintaining Skimmer Sediment Basins." February,
1999. J. W. Faircloth & Son.).
8. Inlets -Discharge water into the basin in a manner to prevent erosion. Use
temporary slope drains or diversions with outlet protection to divert sediment -
laden water to the upper end of the pool area to improve basin trap efficiency
(References: Runoff'Control Measures and Outlet Protection).
Practice Standards and Specifications
9. Erosion control -Construct the structure so that the disturbed area is
minimized. Divert surface water away from bare areas. Complete the
embankment before the area is cleared. Stabilize the emergency spillway
embankment and all other disturbed areas above the crest of the principal
spillway immediately after construction (References: Surface Stabilization).
10. Install porous baffles as specified in Practice 6.65, Porous Ba,J Ies.
11. After all the sediment -producing areas have been permanently stabilized,
remove the structure and all the unstable sediment. Smooth the area to
blend with the adjoining areas and stabilize properly (References: Surface
Stabilization).
Maintenance Inspect skimmer sediment basins at least weekly and after each significant
(one-half inch or greater) rainfall event and repair immediately. Remove
sediment and restore the basin to its original dimensions when sediment
accumulates to one-half the height of the first baffle. Pull the skimmer to
one side so that the sediment underneath it can be excavated. Excavate the
sediment from the entire basin, not just around the skimmer or the first cell.
Make sure vegetation growing in the bottom of the basin does not hold down
the skimmer.
Repair the baffles if they are damaged. Re -anchor the baffles if water is
flowing underneath or around them.
If the skimmer is clogged with trash and there is water in the basin, usually
jerking on the rope will make the skimmer bob up and down and dislodge
the debris and restore flow. If this does not work, pull the skimmer over to
the side of the basin and remove the debris. Also check the orifice inside the
skimmer to see if it is clogged; if so remove the debris.
If the skimmer arm or barrel pipe is clogged, the orifice can be removed and
the obstruction cleared with a plumber's snake or by flushing with water. Be
sure and replace the orifice before repositioning the skimmer.
Check the fabric lined spillway for damage and make any required repairs
with fabric that spans the full width of the spillway. Check the embankment,
spillways, and outlet for erosion damage, and inspect the embankment for
piping and settlement. Make all necessary repairs immediately. Remove all
trash and other debris from the skimmer and pool areas.
Freezing weather can result in ice forming in the basin. Some special
precautions should be taken in the winter to prevent the skimmer from
plugging with ice.
6.64.8 Re, 6/06 Rev. 6106 6.64.9
SKIMMER/SEDIMENT BASIN
CONSTRUCTION AND MAINTAINCE PROCEDURES
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Slatted flange Punch on cut slats far
dia. bolts. U.S. DEPARTMENT OF AGRICULTURE
NATURAL RESOURCES CONSERVATION SERVICE
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ANTI -SEEP COLLAR FOR "a " `°---------------
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2 x 2 x'G
ANTI -SEEP COLLAR
COMPACTED
PERSPECTIVE VIEW
NOTES:
1. NO SILT FENCE ALLOWED. POROUS COIR FIBER BAFFLE REQUIRED.
2. DRIVE STEEL FENCE POST AT LEAST 18" INTO SOLID GROUND
3. WOOD POSTS ARE NOT ACCEPTABLE
4. BAFFLES SPACED A MAXIMUM OF 8' IN FRONT
TWO-THIRDS OF SEDIMENT TRAP (CLOSEST TO RIP -RAP WEIR).
TEMPORARY BASIN BAFFLES
NTS
3:1 MAX
SLOPES
PRINCIPAL SPILLWAY EL=80.5
4M
A T�F
OST FN
ATTACH COIR FIBER BAFFLE
TO HOG WIRE USING WIRE
TOP OF BAFFLE SHOULD BE 6"
HIGHER THAN THE BOTTOM OF
\I l�
THE SPILLWAY
HOG WIRE ATTACHED J
TO POSTS WITH LENGTHS
OF WIRE
BAFFLE INSTALLATION
6" SKIMMER (TYP)
ORIFICE fd= 2.7"
POND EL= 80.5
1 MAX SLOPE (TYP)
RISER = 36" CM
BOTTOM EL= 76.0 ��INV OUT=76.
STEEL POSTS (QUAN
PLASTIC SLOPE DRAIN PIPE
(PRACTICE STANDARD 6.32)
OR
GEOTEXTILE LINING
TEMPORARY OR
PERMANENT DITCH
COIR FIBER BAFFLES
(PRACTICE STANDARD 6.65)
RISER STRUCTURE
I SKIMMER (SIZE VAR.)
/EMBANKMENT
/ STONE ENERGY
DLSSIPATOR
-----►
I '
PE -,,4# EMERGENCY SPILLWAY
STONE PAD
PLAN VIEW (6elowrsklmmer)
wooD STAKE
OR METAL POST
TOP OF EMBANKMENT�
RISER STRUCTURE
TRASH RACK FREEROARD- al =ii _0 �f --- EMERGENCY SPILLWAY
1' MIN. R4-99��IZ_�RV 1111=
SKIMMER -► s R1krIrlll1�111 UUcll>c
ylil llrlil lIrulltlil rlrl�^�If11P1 r -1 1 rrr-Ulflll 1luM rY
III
BARREL
PIPE
CLASS B STONE PAD I
(4' % 4' % 1' MIN.) ANTIFL a ION BLOCK SECTIONAL VIEW t CUT-OFF ANTI -SEEP STABILIZED
TRENCH COLLAR
2' DEEP OUTLET
1.1
NOTES
1. SEED AND PLACE MATTING FOR EROSION ODNTROL ON INTERIOR AND EXTERIOR SIDESLOPES.
Z. INSTALLA MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE STANDARD 6.65.
a 3. INSTALLSKIMMER AND ODUPLING TO RISER STRUCTURE OR DIRECTLY INTO EMBANKMENT 1 FT. FROM BOTTOM OF BASIN.
4. THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT. BETWEEN THE SKIMMER AND COUPLING. NOT TO SCALE
to
Figure 6.61d Sediment Basin (with Riser Barrel Pipe)
SEDIMENT BASIN
NTS
TRASH RACK
TOP EL= 83.0
WEIR EL=81.0
3:1
SOLID EARTHEN DAM ANTI
_ BARREL _
104 LF 24" CMP @ 0.0% MIN-\
- p I
° ^ OUTLET PROTECTION-
oe La=12.0 FT
- W=6.0 FT
9.31' x 9.31' x 1.0' THICK d-18
CONCRETE BASE KEY TRENCH STONE fd= CLASS B RIP RAP
(3' BELOW EX. GROUND, 5'
WIDE AT BOTTOM)
SEDIMENT BASIN #1 W/RISER STRUCTURE
NTS
PVC END CAP
F
I VI-' VICVV
pvr ELBOW
0
END CAP
"C" ENCLOSURE
TER ENTRY UNIT
PVC VENT PIPE
\ SCHEDULE 40 PVC PIPE
(SEE PLAN FOR DIA.)
SCHEDULE 40 PVC PIPE
;IN (SEE PLAN FOR DIA.)
IE
FLEXIBLE HOSE
END VIEW
FRONT VIEW
MAX SLOPE (TYP)
ORIFICE PLATE
(SEE PLAN FOR DIA.)
TEE
SKIMMER DEWATERING DEVICE
NTS
COLLAR
Pipe Outlet to Flat Area -
No Well-defined Channel
3do
d0
WATER
SURFACE
BERM CONTROL SECTION
FREEBOARD (1' MIN) \ EXIT SECTOR
\ SEE PLANS FOR LINER LENGTH
SPILLWAY INVERT ELEV \
MIN Za /a
EXTEND LINER 1' BELOW IL
BOTTOM ELEV. LEVEL OR S l
GREATER 100'
APPROACH PROFILE ALONG CENTERLINE
CHANNEL
N otes
1. La is the length of the riprap
apron.
2. d =1.5 times the maximum
stone diameter but not less
than 6".
3. In a well-defined channel ex-
tend the apron up the channel
banks to an elevation of 6"
above the maximum tailwater
depth or to the top of the bank,
whichever is less.
4. A filter blanket or filter fabric
should be installed between
the riprap and soil foundation.
CROSS SECTION AT CONTROL SECTION
TYPICAL EXCAVATED EARTH SPILLWAY
NTS
1. Ensure that the
Plan Construction
La7 and grades shown in the plan. Compact any fill required in the subgrade to the
Specifications density of the surrounding undisturbed material. Low areas in the subgrade on
undisturbed soil may also be filled by increasing the riprap thickness.
I=1I
�d BI-= 2. The riprap and gravel filter must conform to the specified grading limits
=till shown on the plans.
Filter 3. Filter cloth, when used, must meet design requirements and be properly
Section AA blanket g q p p y
protected from punching or tearing during installation. Repair any damage by
removing the riprap and placing another piece of filter cloth over the damaged
Pipe Outlet to Well-defined area. All connecting joints should overlap so the top layer is above the
Channel downstream layer a minimum of 1 foot. If the damage is extensive, replace
the entire filter cloth.
4. Riprap maybe placed by equipment, but take care to avoid damaging the
filter.
A A 5. The minimum thickness of the riprap should be 1.5 times the maximum
-- stone diameter.
6. Riprap may be field stone or rough quarry stone. It should be hard,
--� angular, highly weather -resistant and well graded.
7. Construct the apron on zero grade with no overfill at the end. Make the
Plan top of the riprap at the downstream end level with the receiving area or slightly
below it.
S. Ensure that the apron is properly aligned with the receiving stream
and preferably straight throughout its length. If a curve is needed to fit site
;1,'
La conditions, place it in the upper section of the apron.
9. Imm ediately after construction, stabilize all disturbed areas with vegetation
(Practices 6.10, Temporary Seeding, and 6.11, Permanent Seeckng).
�dklllt4lill Section AA _I Maintenance Inspect riprap outlet structures weekly and after significant (1/2 inch or greater)
Filter rainfall events to see if any erosion around or below the riprap has taken place,
blanket or if stones have been dislodged. Immediately make all needed repairs to
Figure 6.41c Riprap outlet protection (modified From Va SWCCf. prevent further damage.
References Surface Stabilization
6.10, Temporary Seeding
6.41.4 6.11, Permanent Seeding
6.15, Riprap
Appendix
8.06, Design of Riprap Outlet Protection
Rice, C.E., Kadavy, K.0 "Riprap Design for Pipe Spillways at
-1 < TW/D < 0.7" Presented at the December 13, 1994International Winter
Meeting, American Society of Agricultural Engineers, Paper Number
942541.
Rice, C.E. and K.C. Kadavy. 1994, Plunge Pool Design at Submerged Pipe
Spillway Outlets. Transactions of the ASAE 37(4):1167-1173.
FHWA. 1983. Hydralic Design of Energy Dissipaters for Culverts and
Channels. Hydraulic Engineering Circular Number 14.
OUTLET PROTECTION
NTS
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C8 of
11
Reviewed by:
MTB
Project Number:
DDS JOB #: 2020-21
Date:
DEC 2020
L
0

NATURAL GROUND
MAXIMUM SLOPES NATURAL GROUND
1. Clear the foundation area of trees, sttnnps, roots, loose rock, and other 24" MIN. RAFTING AND DESIGN O
Construction objectionable material. MAXIMUM SLOPES
Specifications W 24" MIN. SERVICES, INC.
2. Excavate the cross section to the lines and grades of the foundation of the
liner as shown on the plans. Bring over -excavated areas to grade by increasing 2/3 W 2 Z Z
the thickness of the liner or by backfilling with moist soil compacted to the _ 1 1 D 2 z 6728 Carbonton Road
density of the surrounding material. _ — = II—IIIII=
—.IIII=IIIII=11�11-1 d
3. Concrete linings: - Ij —_ — - IIII-IIiIt= " Sanford North Carolina 27330
-III , � ,1 --. 1 '
_ _ 1
III = 0 III- 4" to 12" —III— -I j I— —I
• Place concrete linings to the thickness shown on the plans and finish them 18" - 11—III —_ —IIIII=11 —III— 1- [phone] phone
Jil-
in aworkmanlike manner. — q° $°°°°'8'°-IIIII=1"' —I I'- -I I-1 11—
s" = °s>s °••... --- I- GRASS LINED g g Y
—.11.fff` —III—„'-- draftin anddesi nC� mail.com
• Take adequate precautions to prote.ctfreshly placed concrete from extreme -1111=IIIII—� '- GRAVE BEDDING
OR SEE PLAN, -
temperatures to ensure proper curing. GRAVEL BEDDING
• Ensure that subgrade is moist when concrete is poured. PARABOLIC -SHAPED WATERWAY WITH STONE CENTER DRAIN
• Install foundation drains or weep holes where needed to protect against (SHAPED BY BULLDOZER) COMPACTED SOILS
uplift and piping.
• Provide transverse contraction oinistocontrolcrackin ata roximately COMPACTED SOILS
�� g pp Construction I. Remove all trees, brush, stumps, and other objectionable material from the
20-feet intervals. These joints may be formed by using a 1/2-inch thick W foundation area, and dispose of properly.
removable template or by sawing to a depth of at least Iinch. --I,
Specifications PERMANENT DIVERSION BERM
• Install expansion joints at intervals not to exceed 100 feet. —IIIII-IIIII-IIIII— d — I=11111= 2. Excavate the channel, and shape it to neat lines and dimensions shown on
=IIIII=IIIII "'-
4° Rock riprap linings: Practice 6.15, Riprap. ' = -_ I = - NTS
5. Place filters, beddings, and foundation drains to line and grade in the 1a°—111)1II"'- a° to 12" the plans plus a 0.2-foot overcut around the channel perimeter to allow for
manners specified. Place filter and bedding materials immediately after sloe s^ _ _. bulking during seedbed preparations and sod buildup.
p g p 11r=_ FILTER FABRIC OR
preparation. For synthetic filter fabrics, overlap the downstream edge by at -1I�I=III'' GRAVEL BEDDING NATURAL GROUND
least 12 inches with the upstream edge which is buried a minimum 12 inches 3. Remove and properly dispose of all excess soil so that surface water may
in a trench. See figure 6.14a, page 6.14.6. Space anchor pins every 3 feet enter the channel freely. MAXIMUM SLOPES
along the overlap- Spread granular materials in a uniform layer. when more V-SHAPED WATERWAY WITH STONE CENTER DRAIN 24" MIN.
than one gradation is required, spread the layers so there is minimal mixing. (SHAPED BY MOTOR GRADER) 4. The procedure used to establish grass in the channel will depend upon the
Filter material should consist of at least 3 inches of material on all sides of
the drain pipe. The drain pipe conduit should be a minimum of 4 inches in severity of the conditions and selection of species. Protect the channel with
diameter. Acceptable materials include perforated, continuous, closed joint mulch or a temporary liner sufficient to withstand anticipated velocities during 2 Z Z
conduits of clay, concrete, metal, plastic, or other suitable material (Practice TYPICAL RIP RAP CHANNEL the establishment period (Appendix 8.05).
6.81, Subsurface Drain). 1 1 D 1
6. Perform all channel construction to keep erosion and water pollution = I I I I =� - I —I _
to a minimum. Immediately upon completion of the channel, vegetate all 11111 f 1�I—W_ —III—"' -III-111= I_I ,.
disturbed areas or otherwise protect them against soil erosion. Where channel =1 d -1I I I I M a i me n a n ee During the establishment period, check grass -lined channels after every rainfall. —I I ,_ _, 1=1 1_
construction will take longer than 30 days, stabilize channels by reaches. IIIII 1I11=_ After grass is established, periodically check the channel; check it after every �-
Maintenance Inspect channels at regular intervals as well as after major rains, and make ICI III11= I=IIIII heavy rainfall event. Immediately make repairs. It is particularly important t0
repairs promptly. Give special attention to the outlet and inlet sections and I=III —IIIII=IIIIII I II-IIIII= check the channel outlet and all road crossings for bank stability and evidence
other points where concentrated flow enters. Carefully check stability at road FILTER FABRIC OR of piping or scour holes. Remove all significant sediment accumulations to
crossings, and look for indications of piping, scour holes, or bank failures. GRAVEL BEDDING p p g g COMPACTED SOILS
Make repairs immediately. Maintain all vegetation adjacent to the channel in maintain the designed carrying capacity. Keep the grass in a healthy, vigorous
a healthy, vigorous condition to protect the area from erosion and scour during condition at all times, since it is the primary erosion protection for the channel TEMPORARY/PERMANENT DIVERSION DITCH-
NTS
out -of -bank flow. TRAPEZOIDAL
(Practice 6.11, Permanent Seeding).
GRASS LINED TEMPORARY/PERMANENT Z_
RIP RAP LINED TEMPORARY/PERMANENT DIVERSION DITCH J
DIVERSION DITCH NTS O
NTS 19
Figure 6.17d Temporary Channel Liners; Washington State Department of Ecology Construction Construction A W Q (n
Figure 6.17e Channel Installation and Slope Installation; Washington State Ecology Department Even if properly designed, if not properly installed, RECP's will probably
9 p g 9y p Specifications not function as desired. Proper installation is imperative. Even if properly J
Excavate channel to design
Overlap 6" min. grade and cross-section ' . installed, if not properly timed and nourished, vegetation will probably not B B
grow as desired. Proper seed/vegetation selection is also imperative. w
Longitudinal anchor Terminal slope and �; Grade the surface of installation areas so that the ground is smooth and loose.
trench N % ' channel When to installation, follow the steps for seed bed preparation, O Q O
- 12 annel anchor trench en seeding pO O Z J
soil amendments, and seeding in Surface Stabilization, 6.1. All gullies, rills, a_ O
Design depth ( d and any other disturbed areas must be fine graded prior to installation. Spread LU 19
" w Longitudinal seed before RECP installation. (Important: Remove all large rocks, dirt clods, Z
anchor trench stuns roots grass clumps, trash, and other obstructions from the soil surface ~
Overcut channel 2" to allow 6ufltir{s. stumps, > g P z
during seedbed preparation - to allow for direct contact between the soil surface and the RECP.) SEE PLAN FOR STONE d W W Z
Stake at 3'-5 ,-, $. n9 P p Z O
intervals Terminal anchor trenches are required at RECP ends and intermittent trenches A Z O ' U
must be constructed across channels at 25-foot intervals. Terminal anchor PLAN VIEW �NPNNE� S Z a O z
�r trenches should be a minimum of 12 inches in depth and 6 inches in width, O
� 6" while intermittent trenches need be Daily 6 inches deep and 6 inches wide. CHANNEL OUTLET •, �,��°` � 0 '—^
BASIN BOTTOM �:°a VJ
ra F9 �Typical installation �,a Z
Installation for Slopes— Place the RECP 2-3 feet over the top of the slope FILTER FABRIC OR O
With erosion control � � •a3 GRAVEL BEDDING
and into an excavated end trench measuring approximately 12 inches deep
blankets or turf g pP �' P
reinforcement mats - �� by 6 inches wide. Pin the RECP at I foot intervals along the bottom of the CROSS-SECTION A -A m J L1J
G �to'� " 6" trench, backfill, and compact. Unroll the RECP down (or along) the slope 19
b°
6
maintaining direct contact between the soil and the RECP Overlap adjacent
fw Intermittent check slot Longitudinal anchor trench rolls a minimum of 3 inches. Pin the RECP to the round using staples or MATCH CHANNEL WIDTH W
slot at 25 g g P
intervals pins in a 3 foot center -to -center pattern. Less frequent stapling/pinning is —_
—IIIII= — MATCH CHANNEL DEPTH = 11=L1=
acceptable on moderate slopes. —IIIII-IIIII _ = IIIII„• Illu—
Shingle -lap spliced ends or begin new d I-111a= , lil lu - — 4° to 12"
Installation in Channels-- Excavate terminal trenches (12 inches deep and 6 ll = Intermittent roll in an intermittent check slot 6"
Initial channel ( "' = '1�% FILTER FABRIC OR
anchor trench ' check slot inches wide) across the channel at the upper and lower end of the lined channel=11J1-j1'" GRAVEL BEDDING
sections. At 25-foot intervals along the channel, anchor the RECP across the
Prepare soil and apply seed be . i channel either in 6 inch by 6 inch trenches or by installing two closely spaced
CROSS-SECTION B-B
installing blankets, mats or orows of anchors. Excavate longitudinal trenches 6 inches deep and wide along
temporary channel liner sy channel edges (above water line) in which to bury the outside RECP edges.
NOTE: E ° Place the first RECP at the downstream end of the channel. Place the end of Construction 1. Ensure thatthe subgrade for the filter and riprap follows the required lines
the first RECP in the terminal trench and in it at 1 foot intervals salon the and grades shown in the plan. Compact any fill required in the subgrade to the
1. Check slots to be constructed per manufacturers specifications. P g Specifications P density of the surrounding undisturbed material. Low areas in the subgrade on
2. Staking or stapling layout per manufacturers spec lf'Ications. f, _ , `'' bottom of the trench. undisturbed soil may also be filled by increasing the riprap thickness. REVISIONS C
Note: The RECP should be placed upside down in the trench with the roll on The riprap and gravel filter must conform to the specified grading limits Ij s
shown on the plans.
.x-• the downstream Side of the bench. 3. Filter cloth, when used, must meet design requirements and be properly
Slope surface shall be smooth before If there is a berm at the top of z
protected from punching or tearing during installation. Repair an damage b
• ' � P P g g � P Y g Y
placement for proper soi I contact. slope anchor upslope of the berm. z removing the riprap and placing another piece of filter cloth over the damaged
E
' Once pinned and bacl.-filled, the RECP is deployed by wrapping over the g p p p g p g a
• r area. All connecting joints should overlap so the top layer is above the 0
„ 4 top of the trench and unrolling upstream. If the channel is wider than the downstream layer a minimum of 1 foot. If the damage is extensive, replace c
Stapling pattern as Min. 2 -.->- Anchor in 6"x6" min. Trench Yr. provided rolls lace ends of adjacent rolls in the terminal trench, overlapping the entire filter cloth.
P , P J pP g
per manufacturers overlap and staple at 12" intervals. 4. Riprap maybe placed by equipment, but take care to avoid damaging the
p p the adjacent rolls a minimum of 3 inches. Pin at 1 foot intervals, backfill, and
_�� * hw x y� y �� E t o 4 filter. a
recommendations. f-�_ �: �s111111111111
« ^a`.--''� - f r� COmpaCt. Unroll ille RECP lIl t118 1lpStd'edill direction until reaching the first 5. The minimum thickness of the riprap should be 1.5 times the maximum L
Min. 6 overlap. - � p - �� � s '" `•'� � � � � ��'' � � � � intermittent trench. )fold the RECP back over itself, positioning the roll on stone diameter.
.' the downstream side of the trench, and allowing the mat to conform to the 6. Riprap may be field stone or rough quarry stone. It should be hard, Q
z angular, highly weather -resistant and well graded. a
Staple overlaps trench. s
p p 7. Construct the apron on zero grade with no overfill at the end. Make the a
max. 5" spacing. top of the riprap at the downstream end level with the receiving area or slightly C
Then pin the RECP (two layers) to the bottom of the trench, backfill, and below it.
Bringmaterial down to a level area, NOTES: p p (wrapping p p p p y g g
compact. Continue u the channelover the to of the intermittent s. Ensure that the apron is properly aligned with the receiving stream
Do not stretch blankets/matting tight -allow «
turn the end under 4" and staple at 12 1. Design velocities exceeding 2 ft/sec require temporary blankets, mats or similar liners to protect and preferably Straight throughout its length. I£ a curve is needed to fit Site
the rolls to conform to a irregularities. trench) repeating this step at other intermittent trenches, until reaching the
any g intervals. seed and soil until vegetation becomes established. conditions, place it in the upper section of the apron. c
upper terminal trench. 9. Immediately after construction, stabilize all disturbedareaswithvegetation c
Lime, fertilize, and seed before installation. Planting 2• Grass -lined channels with design velocities exceeding 6 ft/sec should include turf reinforcement c
For slopes less than 3H:l V, rolls g mats (Practices 6.10, Temporary Seeding, and 6.11, Permanent Seeding).
tray be placed in horizontal strips. of shrubs, trees, etc. should occur after installation. At the upper terminal trench, allow the RECP to conform to the trench,
secure with pins or staples. backfill, compact and then bring the mat back Q
Maintenance Inspectrrprap outlet structures weekly and after significant (1/2 inch or greater)
over the top of the trench and onto the existing mat (2 to 3 feet overlap in the rainfall events to see if any erosion around or below the riprap has taken place, c
downstream direction), and pin at 1 foot intervals across the RECP. When or if stones have been dislodged. Immediately make all needed repairs to
starting installation of a new roll, begin in a trench or shingle -lap ends of rolls prevent further damage.
References surface stabilization C,
a minimum of I foot with upstream RECP on top to prevent uplifting. Place 6.10, Temporary Seeding
the outside edges of the RECP(s) in longitudinal trenches, pin, backfill, and 6.11, Permanent Seeding AGENCY REVIEW ONLY C,
6.15,Riprap NOT FOR CONSTRUCTION c compact.
L
Appendix
8.06, Design of Riprap Outlet Protection
Anchoring Devices— 11 gauge, at least 6 inches length by 1 inch width staples
TEMPORARY LINING FOR c
z
or 12 inch minimum length wooden stakes are recommended for anchoring the Rice, C.E., Kadavy, K.0 "Riprap Design for Pipe Spillways at t
TEMPORARY/PERMANENT DIVERSION DITCH 1<TWD Presented at theDeoember13,1994IntemationalWnter sale: Drawnb : z
RECP to the ground. Y >;
Meeting, American Society of Agricultural Engineers, Paper Number MTB
942541. NTS
NTS Drive staples or pins so that the top of the staple or pin is flush with the ground
Rice, C.E. and K.C. Kadavy. 1994, Plunge Pool Design at Submerged Pipe
surface. Anchor each RECP eve 3 feet along its center. Longitudinal Sheet: Designed by:
every g gi Spillway Outlets. Transactions of the ASAE 37(4):1167-1173. MTB a
overlaps must be sufficient to accommodate a row of anchors and uniform FHWA. 1983. Hydralic Design of Energy Dissipaters for Culverts and
along the entire length of overlap and anchored every 3 feet along the overlap Channels. Hydraulic Engineering Circular Number 14. Reviewed by: C
length. Roll ends may be spliced by overlapping 1 foot (in the direction of C9 of 11 MTB
water flow), with the upstream/upslope mat placed on top of the downstream/ DITCH OUTLET PROTECTION
dowrislope RECP. This overlap should be anchored at I foot spacing across NTS Project Number: Date:
the RECP. When installing multiple width mats heat seamed in the factory, all DDS JOB #: 2020-21
factory seams and field overlaps should be similarly anchored.
DEC 2020 'u

TYPICAL FENCE SPACING CORNER BRACING CORNER BRACING
10' MAX SPACING 5'-10" MAX SPACING 5'-10" MAX SPACING
CORNER BRACE
4.5' MIN HEIGHT 6' x 4" MIN TREATED POST
STAPLE WIRE TWIST ---,ABOVE GROUND CORNER POST
1" MIN FENCE STAPLE 15.5 GA BARBED WIRE
WARNING
SIGN i
WIRE CLIPS_
LIPS u STAPLE WIRE
1" MIN FENCE STAPLE
V MAX WIRE SPACING-
6' METAL "T" POST-
4.5' MIN HEIGHT
ABOVE GROUND
�15.5 GA BARBED WIRE
6' METAL "T" POST
x 4" MIN TREATED POST
-NAIL BRACE TO POST
USE 30 PENNY NAIL MIN (4)
-NOTCH POST 1" MIN FOR CORNER BRACE
5.5 GA BARBED/ 12.5 GA HIGH TENSILE WIRE TWIST
x 1" x 1" WOOD STICK
INSTALLATION: POST TO BE DRIVEN OR B,
NOTE: USE ONE SECTION OF CORNER BF
AT GATES AND FENCE ENDS
u 1.5' MIN DEPTH \-EXISTING GROUND (TYP)
1.5' MIN DEPTH u BELOW GROUND STAPLE WIRE TWIST
BELOW GROUND u 1" MIN FENCE STAPLE
ELEVATION VIEW 4 STRAND BARBED WIRE FENCE
NTS
DISCHARGE LINE
FROM PUMP
SEDIMENT FILTER BAG
(BAG SIZE BASED ON MANUFACTURER'S RECOMMENDATIONS)
LAY ON 6-12" THICK BED OF 2"-3" DIA. STONE
STONE DE:L I L - 1.LL(, 1 1 V LL 1 1 -
E)
1.3.3 Dewatering Bag Selection
Use the following guidelines and any specific guidelines provided by the manufacturer for Dewatering Bag
installations.
Use the followingsteps to select an appropriately sized Dewatering Bag. Consult with the RCE to select
P g g
Dewatering Bag size if insufficient information is known about the site conditions.
• Transport and place Dewatering Bags with care to prevent ripping or tearing the fabric.
. Avoid installing on steep slopes as the bag may roll, causing failure.
1. Determine the peak flow rate generated from the dewateri um in gallons per minute
P g »gP P g P
• Insert the discharge hose a minimum of 1-foot inside the Dewatering Bag.
g g g
. Do not insert more than one discharge hose into the Dewatering Bag.
2. Determine the peak flow rate through the Dewatering Bag in gallons per minute based on the
Avoid use of excessive flow rates or overfilling the Dewatering Bag. This may cause the bag to rupture
Dewatering Bag peak flow rate and the total surface area provided by the manufacturer.
or cause failure to the hose to bag connection.
3. Select a Dewatering Bag that passes a minimum of two times the peak flow rate generated from the
1.3.5 Removal
dewatering pump as determined in Step 1 to account for a 50% clogging factor.
1.3.4 Installation
Dispose of the Dewatering Bag as directed by the RCE. If allowed, the Dewatering Bag may be cut open
and the contents seeded after removing the fabric. Securely tie off the pump hose connection sleeve when
Install the Dewatering Bag on a mild slope to ensure incoming water flows downhill through the
transporting full Dewatering Bags for disposal . Do not clean and reuse a Dewatering Bag after the voids
Dewatering Bag. Secure the hose to bag connection using a heavy duty pipe clamp, rope, or other suitable
are clogged with trapped sediment.
means to prevent leakage. When using a rope to attach the pump hose to the Dewatering Bag, make a
1.3.6 Inspection and Maintenance
minimum of 6 wraps around the hose over a 6-inch width of the bag and fasten with a secure rope knot.
The bottom area of Dewatering Bags will not allow flow to pass through when the bag is placed on a low-
Follow all manufacturer recommendations for inspection and maintenance guidelines. Replace Dewatering
permeable or impermeable surface. Place the Dewatering Bag on an aggregate, hay bales, or other highly
Bags when trapped sediment has accumulated to 50% of the bag capacity or in accordance with the
permeable surface to maximize water flow through the entire surface area of the bag. Monitor the
manufactu er'srecommendatons.
Dewatering Bag at all times while the pump is running. While monitoring, ensure the hose to bag
connection is secure with only minimal leaking. Check for flow permeating from the bottom surface of the
Dewatering Bags are full when they no longer efficiently filter sediment or pass water at a reasonable rate.
Dewatering Bag. If flow appears restricted, move bag to a surface with higher permeability.
Incoming flow rates will vary depending on the size of the Dewatering Bag, the type and amount of
sediment discharged into the Dewatering Bag, the permeability of the underlying aggregate, and the degree
of slope on which the bag lies.
SEDIMENT
FILTER BAG
#57 STON
VN� OS`ppE
eXISS\PIG GR
NTS
S�QQ�
MPS G G�0
2.0% MIN SLOPE
4.0% MAX SLOPE
cR
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Opp
TEMPORARY INTERNAL SITE ROAD
NTS
INSTALLATION
1. REMOVE ALL
BERM
4
EXISTING GROUND 1 � �4 1 TREES, BRUSH
EXISTING GROUNp
NOTE
1. SEE PLAN SHEET C-2 FOR WIDTH
HEIGHT DETERMINED BY SIDE SLOPES.
2. WIDTH INDICATED ON PLAN IS BOTTOM
WIDTH.
3. SEED PER TEMPORARY/PERMANENT
SEEDING SCHEDULE ON SHEET C-7.
4. NATURAL VOLUNTEER VEGETATION
SHALL REMAIN.
5. BERM ENDS SHALL BE 4:1 SLOPES LIKE
SIDE SLOPES.
VEGETATIVE BERM (TYP)
NTS
TYPICAL CORNER/BEND
FILTER FABRIC
NLIr-M
FABRIC
NOTES:
A) MINIMUM WIDTH OF CONSTRUCTION ENTRANCE PAD SHALL BE 20 FT
B) STONE SHALL BE 2-3" WASHED STONE, 12" THICK.
C) THE ENTRANCE SHALL BE MAINTAINED TO PREVENT TRACKING OR FLOW-
ING OF SEDIMENT ONTO PUBLIC RIGHTS -OF -WAY. THIS MAY REQUIRE
PERIODIC TOP DRESSING WITH ADDITIONAL STONE AND REPAIR AND/OR
CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT.
D) INSTALL PADS WHERE SHOWN ON PLANS OR OTHERWISE DIRECTED
BY ENGINEER.
CONSTRUCTION ENTRANCE PAD
NTS
CLASS "B" RIP RAP
12" NCDOT #5 or
#57 WASHED
STONE
FILTER FABRIC
SECTION A -A
L
24" MAX
AT CENTER
Construction 1. Place stone to the lines and dimensions shown in the plan on a filter fabric �
Specifications Foundation. L =THE DISTANCE SUCH THAT POINTS
2. Keep the center stone section at least 9 inches below natural ground level A AND BARE OF EQUAL ELEVATION
where the dam abuts the channel banks. Maintenance Inspect check dam and channels at least weeldy and after each sigaificant (1/2
3. Extend stone at least 1.5 feet beyond the ditch bank (Figure 6.83b) to keep inch or greater) rainfall event and repair immediately. Clean out sediment,
water from cutting around the ends ❑f'the check dam. straw, limbs, or other debris that could clog the channel when needed.
4, Set spacing between darns to assure that the elevation at the top of the Anticipate submergence and deposition above the check dam and erosion from
high flows around the edges of the dam. Correct all damage immediately. If
lower dam is the same as the toe elevation of the upper dam. significant erosion occurs between dams, additional measures can be taken
5. Protect the channel after the lowest check dam from heavy flow that could such as, installing a protective nprap liner in that portion of the channel
cause erosion. (Practice 6.31, Riprap-line and Paved Channels).
6. Make sure that the channel reach above the most upstream dam is stable. Remove sediment accumulated behind the dams w needed to prevent damage
to channel vegetation, allow the channel to drain through the stone check dawn,
7. Ensure that other areas of the channel, such as culvert entrances below the and prevent large flows from carrying, sediment over the dam. Add stones to
check dams, are not subject to damage or blockave From displaced stones. dams as needed to maintain design height and cross section.
CHECK DAM
NTS
ER RACE
BTREATED
-n
MIN POST FILTER OF 1 INCH DIAMETER # 57
0
WASHED STONE
-n
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0
O
�
qER POST NOTE:
SILT FENCE FABRIC TO OVERLAP
HARDWARE CLOTH BY 12 INCHES
STEEL FENCE POST
WIRE FENCE SILT FENCE FABRIC
HARDWARE CLOTH
STEEL FENCE POST
ON WIRE FENCE
ON WIRE FENCE
HARDWARE CLOTH
PLAN VIEW
FILTER OF 1 INCH DIAMETER #
NOTE:
USE SILT FENCE OUTLETS ONLY WHEN
57 WASHED STONE
DRAINAGE AREA DOES NOT EXCEED 1/4 ACRE
a
AND THERE IS A LOW AREA. USE AS A REPAIR
FLOW DIRECTION $ 18
OF SILT FENCE FAILURES.
Soma
a�8
GRADE
I
STEEL FENCE POST SET
a,
II
SIDE VIEW I 1
II
Li
Installation: Refer to the approved erosion control plan for location,
specifications. If silt fence is not installed correctly the first time, it v
be reconstructed. Determine the exact location of the outlet before w..JL.LIN.LuLLUE,
installation of the silt fence, taking into consideration:
l . Installation at the lowest point(s) in the fence where water will pond.
2. Maximum allowable drainage area restriction for silt fence.
3. Installation where the outlet is accessible for installation, maintenance and
removal.
4. Placement of the outlet so that water flowing through it will not create an
erosion hazard below - avoid steep slopes below the outlet and areas
without protective vegetation. Use slope drains if necessary.
The silt fence outlet shall be installed in accordance with the standard detail, and
the approved erosion control plan.
BURY WIRE FENCE, HARDWARE CLOTH, AND
FRONT VIEW SILT FENCE FABRIC 6 INCHES INTO THE
TRENCH
Maintenance Inspect sediment fences at least once a week and after each rainfall. Make any
required repairs immediately.
Should the fabric of a sediment fence collapse, tear, decompose or become
ineffective, replace it promptly.
Remove sediment deposits as necessary to provide adequate storage volume
for the next rain and to reduce pressure on the fence. Take care to avoid
undermining the fence during cleanout.
Remove all fencing materials and unstable sediment deposits and bring the
area to grade and stabilize it after the contributing drainage area has been
properly stabilized.
SILT FENCE OUTLET
NTS
SEDIMENT FENCE INSTALLATION USING THE SLICING METHOD
Instead of excavating a trench, placing fabric and then backfilling trench,
sediment fence may be installed using specially designed equipment that
inserts the fabric into a cut sliced in the ground with a disc (Figure 6.62b).
Installation
L The base of both end posts should be at least one foot higher than the
Specifications
middle of the fence. Check with a level if necessary.
2. Install posts 4 feet apart in critical areas and 6 feet apart on standard
applications.
3. Install posts 2 feet deep on the downstream side of the silt fence, and
as close as possible to the fabric, enabling posts to support the fabric from MIN. 10 GA.
upstream water pressure. LINE WIRES
4. Install posts with the nipples facing away from the silt fabric.
5. Attach the fabric to each post with three ties, all spaced within the top 8
inches of the fabric. Attach each tie diagonally 45 degrees through the fabric,
with each puncture at least 1 inch vertically apart. Also, each tie should be
positioned to hang on a post nipple when tightened to prevent sagging.
6. Wrap approximately 6 inches of fabric around the end posts and secure
with 3 ties.
7. No more than 24 inches of a 36 inch fabric is allowed above ground
level.
8. The installation should be checked and corrected for any deviations before
compaction.
9. Compaction is vitally important for effective results. Compact the soil
immediately next to the silt fence fabric with the front wheel of the tractor,
slid steer, or roller exerting at least 60 pounds per square inch. Compact the
upstream side first, and then each side twice for a total of 4 trips.
Maintenance
Inspect sediment fences at least once a week and after each rainfall. Make any
required repairs immediately.
Should the fabric of a sediment fence collapse, tear, decompose or become
ineffective, replace it promptly.
Remove sediment deposits as necessary to provide adequate storage volume
for the next rain and to reduce pressure on the fence. Take care to avoid
undermining the fence during cleanout.
Remove all fencing materials and unstable sediment deposits and bring the
area to grade and stabilize it after the contributing drainage area has been
properly stabilized.
8' MAX.
I I I-
ii =
lll� II FRONT VIEW"
STEEL POST
WOVEN WIRE FABRIC
N OTE:
SILT FENCE GEOTEXTILE FABRIC
DOES NOT EXCEED 1/4 ACRE AND NEVER IN
AREAS OF CONCENTRATED FLOW
-USE SILT FENCE ONLY WHEN DRAINAGE AREA
-END OF SILT FENCE NEEDS TO BE TURNED UPHILL. = UPSLOPE
N 0
M
ro
z
N
M BACKFILL TRENCH
OVER SILT FENCE
.......
0 14"
SECTION VIEW
SILT FENCE
NTS
2-1/2 GA.
MEDIATE
GRADE
" FOR REPAIR OF SILT
FENCE FAILURES, USE
No. 57 WASHED STONE.
FOR ANCHOR WHEN SIL'
FENCE IS PROTECTING
CATCH BASIN.
RAFTING AND DESIGN O
SERVICES, INC.
6728 Carbonton Road
Sanford, North Carolina
27330
[phone] phone
[e-mail]
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
Drawn by:
MTB
NTS
Sheet:
Designed by:
MTB
C 1 O of
11
Reviewed by:
MTB
Project Number:
Date:
DDS JOB #: 2020-21
DEC 2020
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Sediment Basin # 1
Calculate Flow - Rational Method
Q10 = CIA
C=
0.40
1=
7.93
Q10 = 50.75
A=
16.00
2-Yr Storm
Q2 = CIA
C=
0.40
1=
6.11
Q2 = 39.10
A=
16.00
Calculate Required Surface Area
SA=Q25 x 325 sf/cfs
Q25 = 56.96
SA=
18512.00 ft2
Side Slopes =
3.00 :1
Pond Depth=
5.00 ft
Basin Dims (Per SA)
Top = 97 0
Bottom = 67 x
Volume Required
VR=Ax1800 cf/ac
A=
VR=
28800.00 ft3
Volume Proposed
VP=((Top Area + Bottom Area)/2)xD
VP=
69490.00 ft3
Skimmer Sizing
Calculate Dewater Time
Qd= V/Td
Qd= 13898.00 cfs
Temporary Diversion/Berm #
1 => DA # TD 1
Calculate Flow - Rational Method
25-YrStorm
Q , = CIA
C= 0.40
1= 8.90 in/hr
Qa =
12.74
A= 3.58 ac
Channel Slope=
1.00
Channel Depth=
2.00
Side Slopes=
3.00
Velocity =
4.08
Soil Type 0
sandy loam
Slopes= 0-10%
Channel Linine
Shear Calculation
T=yds
y=
62.4lbs
dw�ef
1.02 ft
T=
0.63648
Ibs/ft' s=
0.01 ft/ft
Temporary-
Straw w/ netting
Permanent=
Bermudagrass
Temporary Diversion/Berm #
2 => DA # TD 2
Calculate Flow - Rational Method
25-YrStorm
Q, - CIA
C= 0.40
1= 8.90 in/hr
QM =
40.30
A= 11.32 ac
Channel Slope=
1.00.
Channel Depth=
2.50
Side Slopes=
3.00
Velocity =
5.52
Soil Type @
sandy loam
Slopes= 0.-10%_1 A
Channel Linine
Shear Calculation
T=yds
y=
62.4lbs
dwlef
1.56 ft
T=
0.97344
Ibs/ft' s=
0.01 ft/ft
Temporary=
Straw w/ netting
Permanent=
Bermudagrass.
25-Yr Storm
Q25 = CIA C= 0.40
1= 8.90
Q25 = 56.96 A= 16.00
194 =
134 =
16.00 ac
Top= 18818.00 sf
Bottom= 8978.00 sf
D= 5.00 ft
18818 ft'
8978 ft2
V= 69490.00 ft3
Td= 5 3-5 days typ
Calculate Orifice Diameter
D=sgrt((Qd/(2310sgrt(h))) Qd= 13898.00
h= 0.33
D= 3.24
Use 6 " Skimmer w/ 3.24 " Orifice
Principle Spillway Sizing
L=Q2
/(CH1.5) L= ? ft
H= 1.50 ft
c= 3.10
L= 6.87 ft
Riser Sizing
C=L x W
D= 2.62 FT
Material= CMP
Use 36.00 "CMP Riser
Barrel Sizing
QZ= CA X sgrt(2gh)
A= 3.19
A=pi X rZ
A= 24.17 in
Material= CMP
Use 24.00 "RCP Barrel
Size Riser/Barrel Base
Calculate Bouyance Force on Riser
Cross -sectional area
A=LxW
A= 16.00 sf
Riser Volume
V=A x L
C= 6.87 ft
D= ? ft
Per Permenant Pond
C=
0.60
A= ?
sf
Q2=
39.10 cfs
h=
6.50 ft
g=
32.20 ft/s
Per Permenant Pond
L&W
A=
4.00
16.00
V= 80.00
Bouyance Force
FB=qV
FB= 4992.00lbs/cf
L= 5.00
q= 62.40lbs
V= 80.00 ft3
Concrete Base Sizing
(Concrete = 120 Ibs/cf) - (weight of water = 62.4 Ibs/cf) = 57.6 Ibs/cf
Base Volume 86.67 cf
Base Dims = 9.31 ft
x 9.31 ft x
Weir Sizing
Per AutoCad Hydraflow Software
L=
20.00 ft
D=
0.89 ft
dwater
0.89 ft
Q25=
56.96 cfs
Velocity=
2.82 ft/s
Weir Lining
Shear Calculation
T=yds
T= 0.555361bs/ft2
Required Liner=
Proposed Liner=
Barrel Outlet Protection
New York Method 8.06.5 Manual
Diameter of Barrel = 24.00 "
Velocity= 7.8 ft/s
Zone= 2
y= 62.4 Ibs
dwater= 0.89 ft
s= 0.01 ft/ft
Class A Rip Rap
Class A Rip Rap
1.00 ft
La= 12
W= 6
d= 18"
Stone Diameter= Class B
RAFTING AND DESIGN O
SERVICES, INC_
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
NTS
Drawn by:
MTB
Sheet:
Designed by:
MTB
C 11 of
11
Reviewed by:
MTB
Project Number:
DDS JOB #: 2020-21
Date:
DEC 2020