SW6220501_Plansheet C-6.0 - SCM Detail_20220621

1. UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND
STRUCTURAL EROSION AND SEDIMENT CONTROL MEASURES SHALL
BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE
MINIMUM STANDARDS AND SPECIFICATIONS OF THE NORTH
CAROLINA EROSION AND SEDIMENT CONTROL HANDBOOK.
2. THE CONTRACTOR SHALL NOTIFY PLAN APPROVING AUTHORITY
ONE WEEK PRIOR TO THE PRECONSTRUCTION CONFERENCE, ONE
WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING
ACTIVITY, AND ONE WEEK PRIOR TO FINAL INSPECTION.
3. IF POSSIBLE ALL EROSION AND SEDIMENT CONTROL MEASURES
ARE TO BE PLACED PRIOR TO CLEARING AND/OR LAND DISTURBANCE
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL
PLAN AND PERMIT SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS
OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT
LIMITED TO OFF -SITE BORROW OR WASTE AREAS STAGING OR
STORAGE AREAS), THE CONTRACTOR SHALL PREPARE AND SUBMIT
A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR
REVIEW AND TO NCDENR REGIONAL OFFICE FOR APPROVAL.
CONTRACTOR SHALL PAY ALL FEES REQUIRED AND SHALL INSTALL
NECESSARY MEASURES AT NO SEPARATE PAYMENT. THE
CONTRACTOR SHALL PROVIDE THE OWNER AND THE ENGINEER A
COPY OF THE AMENDED PERMIT.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY
ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT
EROSION AND SEDIMENTATION AS DETERMINED BY EITHER NCDENR
OR THE ENGINEER.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT
CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING
ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL
STABILIZATION IS ACHIEVED.
8. ALL AREAS DISTURBED BY CONSTRUCTION UNLESS OTHERWISE
IMPROVED SHALL BE SODDED OR SEEDED AS INDICATED AND
STABILIZED.
9. DURING DEWATERING OPERATIONS, WATER SHALL BE PUMPED
INTO AN APPROVED FILTERING DEVICE PRIOR TO DISCHARGE TO
RECEIVING OUTLET.
10. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL
MEASURES WEEKLY AND AFTER EACH RUNOFF -PRODUCING EVENT
ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE
EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE
MADE IMMEDIATELY.
11. ALL TEMPORARY EROSION CONTROL MEASURES SHALL BE
REMOVED BY CONTRACTOR ONCE STABILIZATION OR A SUFFICIENT
GROUND COVER HAS BEEN ESTABLISHED OR AS DIRECTED BY THE
ENGINEER. NCDENR'S FINAL APPROVAL IS REQUIRED.
12. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE SHALL BE
REQUIRED AT ALL CONSTRUCTION STAGING AREA ENTRANCES AND
ALL CONSTRUCTION ACCESS LOCATIONS INTO NON -PAVED AREA.
13. WHEN CROSSING CREEK OR DRAINAGE -WAY, THE CONTRACTOR
SHALL RIP -RAP WITH FABRIC DISTURBED BANKS AND CHANNEL AND
RESTORE SLOPES TO ORIGINAL CONTOURS, BUT NOT STEEPER THAN
2:1 MAXIMUM. DISTURBED CREEK AREA SHALL BE STABILIZED
IMMEDIATELY.
1 GENERAL EROSION AND SEDIMENT CONTROL NOTES
DESIGN CRITERIA
GRAVEL ENTRANCE SHALL BE 50 FEET
IN LENGTH AND 12 FEET IN WIDTH
WITH 20 FOOT RADIUS AT EXISTING
ROADWAY
36-0" MIN 4'-0" 10'4"
6"_L
FILTER FABRIC-2-3" WASHED STONE
GRAVEL CONSTRUCTION ENTRANCE
MIN
AGGREGATE
6" MIN. THICKNESS
2-3" COURSE
AGGREGATE SIZE - USE 2-3 INCH WASHED STONE
DIMENSION OF GRAVEL PAD
THICKNESS - 6 INCHES MINIMUM
WIDTH - 12 FT. MINIMUM OR FULL WIDTH AT ACCESS
POINTS OF THE VEHICULAR ENTRANCE AND EXIT
AREA, WHICHEVER IS GREATER
LENGTH- 50 FT. MINIMUM.
LOCATION - LOCATE CONSTRUCTION ENTRANCES AND
EXITS TO LIMIT SEDIMENT FROM LEAVING THE SITE
AND TO PROVIDE FOR MAXIMUM UTILITY BY ALL
CONSTRUCTION VEHICLES. AVOID STEEP GRADES
AND ENTRANCES AT CURVES IN PUBLIC ROADS.
CONTRACTOR SHALL INSTALL ADDITIONAL GRAVEL
CONSTRUCTION ENTRANCES NOT INDICATED ON THE PLANS
REQUIRED FOR STAGING AND/OR BORROW AREAS AND
MAINTAIN AT NO ADDITIONAL EXPENSE TO THE OWNER.
CONTRACTOR SHALL SUPPLEMENT AND MAINTAIN GRAVEL
CONSTRUCTION ENTRANCES AT HIS EXPENSE UNTIL FINAL
ACCEPTANCE.
MAINTENANCE
MAINTAIN THE GRAVEL PAD INBA CONDITION TO PREVENT MUD OR
SEDIMENT FROM LEAVING THE CONSTRUCTION SITE. THIS MAY
REQUIRE PERIODIC TOPDRESSING WITH 2-INCH STONE. AFTER EACH
RAINFALL, INSPECT ANY STRUCTURE USED TO TRAP SEDIMENT AND
CLEAN IT OUT AS NECESSARY. IMMEDIATELY REMOVE ALL
OBJECTIONABLE MATERIALS SPILLED, WASHED OR TRACKED ONTO
PUBLIC ROADWAYS.
NTS
2 TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
NATURAL GROUND
MAX. SLOPE (TYP)
2.5
IN. 2.5 /
�1 1 F
NATURAL GROUND z
T2
aAil
COMPACTED SOIL
*** WHEN A GRAVEL DIVERSION BERM IS REQUIRED, THE HEIGHT
SHALL BE REDUCED TO 12 INCHES AND THE TOP WIDTH TO 6",
ALL OTHER REQUIREMENTS SHALL REMAIN THE SAME.
TEMPORARY DIVERSION KEY NOTES:
1. CLEAR THE ARE UNDER THE BERM AND STRIP THE ROOTS/OTHER ORGANICS.
2. COMPACT THE SIDE SLOPES, PREFERABLY WITH A TRACKED VEHICLE TO SLOW RUNOFF VELOCITIES.
3. VEGITATE THE RIDGE OF THE BERM IMMEDIATELY AFTER CONSTRUCTION UNLESS THE BERM WILL REMAIN IN PLACE
FOR LESS THAN 30 DAYS.
MAINTENANCE:
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL. IMMEDIATELY REMOVE
SEDIMENT FROM THE FLOW AREA AND REPAIR THE DIVERSION RIDGE. CAREFULLY CHECK OUTLETS
AND MAKE TIMELY REPAIRS AS NEEDED.
NTS
6 TEMPORARY DIVERSION BERM
BELOW WATER SURFACE
a
N
GE OF NORMAL 1 00
UPLANDS (ABOVE WATER SURFACE)
SHALLOW WATER PLANTS
SHALLOW LAND PLANTS
COMMON NAME
WATERPOD
BOTANICAL NAME
HYDROLEA QUADRIVALVIS
COMMON NAME
JOE PYE WEED
BOTANICAL NAME
EUPATORIUM FISTULOSUM
PICKERELWEED
PONTEDERIA CORDATA
RED CHOKEBERRY
ARONIA ARBUTIFOLIA
LIZARD TAIL
SAURURUS CERNUUS
CARDINAL FLOWER
LOBELIA CARDINALIS
BULLTONGUE
SAGITTARIA LANCIFOLIA
1L
SILKY DOGWOOD
CORNUS AMOMUM
TEMPORARY SEEDING/MULCHING SPECIFICATIONS (FOR LATE WINTER AND EARLY SPRING)
SEEDING MIXTURE:
SPECIES RATE (LB./ACRE)
RYE (GRAIN) 120
ANNUAL KOBE LESPEDEZA 50
OMIT ANNUAL LESPEDEZA WHEN DURATION OF TEMPORARY COVER IS NOT EXTEND BEYOND JUNE.
SEEDING DATES:
JANUARY 1 - MAY 1
SOIL AMENDMENTS:
FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 LBJACRE 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.
TEMPORARY SEEDING/MULCHING SPECIFICATIONS (FOR SUMMER)
SEEDING MIXTURE:
SPECIES RATE (LB./ACRE)
GERMAN MILLET 40
A SMALL -STEMMED SUDANGRASS MAY BE SUBSTITUTED AT A RATE OF 50 LB./ACRE.
SEEDING DATES:
MAY 1- AUGUST 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.
TEMPORARY SEEDING/MULCHING SPECIFICATIONS (FOR FALL)
SEEDING MIXTURE:
SPECIES RATE (LB./ACRE)
RYE (GRAIN) 120
SEEDING DATES:
AUGUST 15 - DECEMBER 30
SOIL AMENDMENTS:
FOLLOW RECOMMENDATIONS OF 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. TOP DRESS WITH 50 LB./ACRE OF NITROGEN IN MARCH. IF
IT IS NECESSARY TO EXTEND TEMPORARY COVER BEYOND JUNE 15, OVERSEED WITH 50 LB./ACRE KOBE LESPEDEZA
IN LATE OR EARLY MARCH.
3 TEMPORARY SEEDING SPECIFICATIONS
DEWATERING CONCRETE BLOCK
1. LAY ONE BLOCK ON EACH SIDE
OF THE STRUCTURE ON ITS
SIDE IN THE BOTTOM ROW TO
ALLOW POOL DRAINAGE. THE
FOUNDATION SHALL BE EXCAVATED
o AT LEAST 2 INCHES BELOW THE
n
-_CREST OF THE STORM DRAIN.
Io I- �l PLACE THE BOTTOM ROW OF BLOCKS
o AGAINST THE EDGE OF THE STORM
I- - I 3 DRAIN FOR LATERAL SUPPORT AND
< Of�O �� �� TO AVOID WASHOUTS WHEN OVERFLOW
poo (D OI c O O 0� ,o OCCURS. IF NEEEDED, GIVE LATERAL
g �' SUPPORT TO SUBSEQUENT ROWS BY
------------
0 000- �'___ 8�'-""""cpo 08 PLACING 2X4 WOOD STUDS THROUGH
$o o O 0� 'o - BLOCK OPENINGS.
$$w �O
o S 2. CAREFULLY FIT HARDWARE CLOTH OR
-^- 88 9- S. g og�g •So3o $o o COMPARABLE WIRE MESH WITH 1/2-
/ - INCH OPENINGS OVER ALL
z
BLOCK OPENINGS.
2:1 SLOPE GRAVEL FILTER
3. USE #57 WASHED STONE, PLACED
2-INCHES BELOW THE TOP OF THE
BLOCK. MAXIMUM SLOPE OF
TEMPORARY SEDIMENT- WIRE SCREEN DEWATERING STONE FILL SHALL BE 2:1
POOL 1' MIN.
2' MAX. _ _ -
--
SEDIMENT I1 DROP INLET
WITH GRATE
MAINTENANCE
INSPECT THE BARRIER AFTER EACH RAIN AND MAKE REPAIRS AS NEEDED.
RREMOVE SEDIMENT AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUMENT FOR
SUBSEQUENT RAINS.
NTS
7 BLOCK AND GRAVEL INLET PROTECTION
COMMON NAME SIZE SPACING
WATERPOD
4 IN CONTAINER
24" O.C. MAXIMUM
PICKERELWEED
4 IN CONTAINER
24" O.C. MAXIMUM
LIZARD TAIL
4 IN CONTAINER
24" O.C. MAXIMUM
BULLTONGUE
4 IN CONTAINER
24" O.C. MAXIMUM
BLUE FLAG IRIS
4 IN CONTAINER
24" O.C. MAXIMUM
JOE PYE WEED
4 IN CONTAINER
18" O.C. MAXIMUM
RED CHOKEBERRY
1 GAL CONTAINER
48" O.C. MAXIMUM
CARDINAL FLOWER
1 GAL CONTAINER
48" O.C. MAXIMUM
SILKY DOGWOOD
1 GAL CONTAINER
48" O.C. MAXIMUM
SWAMP MILKWEED
4 IN CONTAINER
18" O.C. MAXIMUM
*MUST INCLUDE A MINIMUM
OF 3 DIVERSE SPECIES AT
A MINIMUM PLANTING RATE
OF 50 PLANTS PER 200 SF.
* BLUE FLAG IRIS IRIS VIRGINICA * SWAMP MILKWEED ASCLEPIAS INCARNATA PLANT SUPPLIERS
NOTES * ALTERNATE PLANTS CAROLINA GREENERY, WEST END, NC 910-947-3150
MELLOW MARSH FARM, PITTSBORO, NC 919-742-1200
1. PLANT SPACINGS SHALL BE A MAXIMUM OF 18 INCHES ON CENTER. PLANT DELIGHTS NURSERY, RALEIGH, NC 919-772-4794
2. PLANTS CAN AND SHOULD BE MIXED MATCHED DURING THE PLANTING PROCESS. CILL IDE NATIVE PLANT NURSERY, RALEIGH, NC 877-479-2673
SHALLOW LAND PLANTS AND SHALLOW WATER PLANTS CANNOT BE MIXED TOGETHER.
3. SOIL SAMPLE SHOULD BE TAKEN PRIOR TO SAMPLING AND FERTLIZE AT RECOMMENDATION
FROM SOILS ANALYSIS. **VEGETATED SHELF AND SLOPES ABOVE THE PERMANENT POOL ELEVATION SHALL HAVE A MINIMUM
4. ALL SLOPES AND AREAS ADJACENT TO THE WET POND SHALL BE SEEDED WITH BERMUDA OF 6" TOPSOIL. SUBGRADE SHALL BE ADJUSTED TO ACCOUNT FOR ADDITION OF TOPSOIL IN THESE
GRASS FOR A PERMANENT GROUNDCOVER. AREAS SUCH THAT THE ELEVATIONS SHOWN ABOVE ARE TO THE FINISHED GRADE OF THE TOPSOIL.
5. ALL INSTALLATIONS SHALL BE FROM A QUALIFIED PROFESSIONAL.
9 VEGETATED SHELF PLANTING DETAIL
NTS
SEEDING SPECIFICATIONS
SEEDING MIXTURES:
TALL FESCUE 80
PENSACOLA BAHIAGRASS 50
SERICEA LESPEDEZA 30
KOBE LESPEDEZA 10
SEEDING NOTES:
1. FROM SEPT. 1 TO MAR. 1 USE UNSCARIFIED SERICEA SEED.
2. ON POORLY DRAINED SITES OMIT SERICEA AND INCREASE KOBE TO 30 LB./ACRE.
3. WHERE A NEAT APPEARANCE IS DESIRED, OMIT SERICEA AND INCREASE KOBE TO 40 LB./ACRE.
NURSE PLANTS:
BETWEEN APRIL 15 AND AUG. 15, ADD 10 LB./ACRE OF GERMAN MILLET OR 15 LB./ACRE SUDANGRASS. PRIOR TO MAY 1
OR AFTER AUG. 15, ADD 25 LB./ACRE RYE (GRAIN).
SEEDING DATES:
BEST POSSIBLE
EARLY SPRING: FEB. 15 - MAR. 20 FEB. 15 - APR. 30
FALL: SEPT. 1 - SEPT. 30 SEPT. 1 - OCT. 31
SOIL AMENDMENTS:
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TEST, OR APPLY 3,000 - 5,000 LBJACRE GROUND AGRICULTURAL
LIMESTONE (USE THE LOWER RATE ON SANDY SOILS) AND 1,000 LBJACRE 10-10-10 FERTILIZER.
MULCH:
APPLY 4,000 LB./ACRE GRAIN STRAW OR EQUIVALENT COVER OF ANOTHER SUITABLE MULCH. ANCHOR STRAW BY
TACKING WITH ASPHALT, NETTING, OR ROVING OR BY CRIMPING WITH A MULCH ANCHORING TOOL. A DISK WITH
BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL.
MAINTENANCE:
IF GROWTH IS LESS THAN FULLY ADEQUATE, REFERTILIZE IN THE SECOND YEAR, ACCORDING TO THE SOIL TESTS OR
TOP DRESS WITH 500 LB./ACRE 10-10-10 FERTILIZER. MOW AS NEEDED WHEN SERICEA IS OMITTED FROM THE MIXTURE.
RESEED, FERTILIZE, AND MULCH DAMAGED AREAS IMMEDIATELY.
SEEDING SPECIFICATIONS
SEEDING MIXTURE:
SPECIES RATE (LB./ACRE)
COMMON BERMUDAGRASS 40-80(1-2 LB./1,000 FT2)
SEEDING DATES:
COASTAL PLAIN: APR. - JULY
SOIL AMENDMENTS:
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TEST, OR APPLY 3,000 LB./ACRE GROUND AGRICULTURAL LIMESTONE
AND 500 LEI 10-10-10 FERTILIZER.
MULCH:
USE JUTE, EXCELSIOR MATTING, OR OTHER EFFECTIVE CHANNEL LINING MATERIAL TO COVER THE BOTTOM OF
CHANNELS AND DITCHES. THE LINING SHOULD EXTEND ABOVE THE HIGHEST CALCULATED DEPTH OF FLOW. ON
CHANNEL SIDE SLOPES ABOVE THIS HEIGHT, AND IN DRAINAGES NOT REQUIRING TEMPORARY LININGS, APPLY 4,000
LBJACRE GRAIN STRAW AND ANCHOR STRAW BY STAPLING NETTING OVER THE TOP.
MULCH AND ANCHORING MATERIALS MUST NOT BE ALLOWED TO WASH DOWN SLOPES WHERE THEY CAN CLOG
DRAINAGE DEVICES.
MAINTENANCE:
A MINIMUM OF 3 WEEKS IS REQUIRED FOR ESTABLISHMENT. INSPECTION AND REPAIR MULCH FREQUENTLY.
REFERTILIZE THE FOLLOWING APR. WITH 50 LB./ACRE NITROGEN.
4 PERMANENT SEEDING SPECIFICATIONS
INFLOW
STRUCTURE
d4_
BAFFLES
INFLOW
DEWATERING
ZONE
FILTER F
CONSTRUCTION SPECIFICATIONS
SKIMMER
DEWATERING
DEVICE
ON STONE
BEDDING
MIN 8"
1. CLEAR, GRUB & STRIP TOPSOIL FROM AREAS UNDER THE EMBANKMENT TO
REMOVE TREES, VEGETATION, ROOTS AND OTHER OBJECTIONABLE MATERIAL.
PLACE TEMPORARY SEDIMENT CONTROLS BELOW THE BASIN AS NEEDED.
2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE OF ROOTS,
WOOD 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 ON A FIRM, SMOOTH FOUNDATION OF IMPERVIOUS SOIL.
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. PLACE A MINIMUM OF 2 FEET OF COMPACTED
BACKFILL OVER THE PIPE SPILLWAY BEFORE CROSSING IT WITH CONSTRUCTION
EQUIPMENT.
5. ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURER'S INSTRUCTIONS
6. LAY THE ASSEMBLED SKIMMER ON THE BOTTOM OF THE BASIN WITH THE
FLEXIBLE JOINT AT THE INLET OF THE BARREL PIPE. ATTACHED THE FLEXIBLE
JOINT TO THE BARREL PIPE AND POSITION THE SKIMMER OVER THE EXCAVATED
PIT. ATTACH A ROPE TO THE SKIMMER AND ANCHOR IT TO THE SIDE OF THE
BASIN.
7. INSTALL THE SPILLWAY IN UNDISTURBED SOIL TO THE GREATEST EXTEND
POSSIBLE. 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. 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. IF MULTIPLE SECTIONS AREA REQUIRED, THE UPPER SECTION
SHOULD OVERLAP THE LOWER SECTION SO THAT WATER CANNOT FLOW UNDER
THE FABRIC.
z
M
z
z
m
w
EMERGENCY
SPILLWAY
STONE
1' FREEBOARD /
f/
6" MIELEVATION OF
EMERGENCY SPILLWAY
�* EMERGENC'
SPILLWAY
SEDIMENT
STORAGE ZONE
CROSS-SECTION VIEW
8. DISCHARGE WATER INTO THE BASIN 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.
9. 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.
10. INSTALL POROUS BAFFLES AS SPECIFIED.
11. AFTER ALL SEDIMENT PRODUCING AREAS HAVE BEEN STABILIZED, REMOVE
THE STRUCTURE AND ALL THE UNSTABLE SEDIMENT. SMOOTH THE AREA TO
BLEND WITH THE ADJOINING AREAS AND STABILIZE PROPERLY.
SCH 40 PVC **SKIMMER CAN BE PURCHASED FROM J.W. FAIRCLOTH & SON INC.
PIPE SKIMMER CHOSEN SHALL BE EQUAL TO THE FAIRCLOTH SKIMMER.
SKIMMER
MAINTENANCE
INSPECT SKIMMER SEDIMENT BASINS WEEKLY AND AFTER EACH PERIOD OF
SIGNIFICANT RAINFALL. REMOVE SEDIMENT AND RESTORE TRAP TO ITS ORIGINAL
DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE HEIGHT
OF THE FIRST BAFFLE. EXCAVATE SEDIMENT FROM THE ENTIRE BASIN. MAKE SURE
VEGETATION GROWING IN THE BOTTOM OF THE BASIN DOES NOT HOLD DOWN THE
SKIMMER. PLACE THE SEDIMENT THAT IS REMOVED IN AN AREA WITH SEDIMENT
CONTROLS.
REPAIR THE BAFFLES IF THEY ARE DAMAGED. RE -ANCHOR THE BAFFLES IF WATER
IS FLOWING UNDERNEATH OR AROUND THEM.
UNCLOGGED THE SKIMMER AS NEEDED. CHECK TO MAKE SURE ORIFICE INSIDE OF
THE SKIMMER IS NOT CLOGGED; IF SO, REMOVE THE DEBRIS. IF SKIMMER ARM OR
BARREL IS CLOGGED, REMOVE THE ORIFICE AND CLEAR THE DEBRIS.
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. MAKE ALL
NECESSARY REPAIRS IMMEDIATELY. REMOVE TRASH AND DEBRIS FROM THE
SKIMMER AND POOL AREAS.
10 TEMPORARY SKIMMER BASIN
NTS
PLAN VIEW
STEEL POSTS (QUANTITY VAR.)
-�� SKIMMER (SIZE
INFLOW _
STRUCTURE
14'
4'
COIR FIBER BAFFLES '
O WOOD STAKE
(PRACTICE STANDARD 6.65) _� OR METAL POST
�p TRASH RAC
SKIMMER �-C )
;IT RISER STRUCTURE
EMBANKMENT
STONE ENERGY
DISSIPATOR
EMERGENCY
SPILLWAY
TOP OF EMBANKMENT
FREEBOARD 1 MIN. 2 EMERGENCY SPILLWAY
1' MIN. S,Si'
BARREL
.�� n� PIPE
CONSTRUCTION SPECIFICATIONS CLASS B STONE PAD � �\
(4'X4'X1' MIN.) v
CUT-OFF TRENCH ANTI -SEEP STABILIZED
1. CLEAR, GRUB &STRIP TOPSOIL FROM AREAS UNDER THE EMBANKMENT TO AN TIFLOTATION BLOCK COLLAR OUTLET
REMOVE TREES, VEGETATION, ROOTS AND OTHER OBJECTIONABLE MATERIAL. 2' DEEP 1.1
DELAY CLEARING THE POOL AREA UNTIL THE DAM IS COMPLETE AND THEN
REMOVE BRUSH,TREES, AND OTHER OBJECTIONABLE MATERIALS TO FACILITATE CROSS-SECTION VIEW
SEDIMENT CLEANOUT. STOCKPILE ALL TOPSOIL OR SOIL CONTAINING ORGANIC
MATTER FOR USE ON THE OUTER SHELL OF THE EMBANKMENT TO FACILITATE
VEGETATIVE ESTABLISHMENT. PLACE TEMPORARY SEDIMENT CONTROLS BELOW NOTES
THE BASIN AS NEEDED.
1. SEED AND PLACE MATITNG FOR EROSION CONTROL ON INTERIOR AND
2. EXCAVATE CUT-OFF TRENCH ALONG THE CENTER LINE OF THE EARTH FILL EXTERIOR SIDESLOPES.
EMBANKMENT. CUT THE TRENCH TO STABLE SOIL MATERIAL, BUT IN NO CASE 2. INSTALL A MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE
MAKE IT LESS THAN 2 FEET DEEP. THE CUT-OFF TRENCH MUST EXTEND INTO STANDARD 6.65.
BOTH ABUTMENTS TO AT LEAST THE ELEVATION OF THE RISER CREST. MAKE 3. INSTALL SKIMMER AND COUPLING TO RISER STRUCTURE OR DIRECTLY INTO
THE MINIMUM BOTTOM WIDTH WIDE ENOUGH TO PERMIT OPERATION OF EMBANKMENT 1 FT. FROM BOTTOM OF BASIN.
EXCAVATION AND COMPACTION EQUIPMENT, BUT IN NO CASE LESS THAN 2 FEET. 4. THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT. BETWEEN THE
MAKE SIDE SLOPES OF THE TRENCH NO STEEPER THAN 1:1. COMPACTION SKIMMER AND COUPLING.
REQUIREMENTS ARE THE SAME AS THOSE FOR THE EMBANKMENT. KEEP THE
TRENCH DRY DURING BACKFILLING AND COMPACTION OPERATIONS.
3. EMBANKMENT - TAKE FILL MATERIAL FROM THE APPROVED AREAS SHOWN ON
THE PLANS. IT SHOULD BE CLEAN MINERAL SOIL, FREE OF ROOTS, WOODY INLET
VEGETATION, ROCKS, AND OTHER OBJECTIONABLE MATERIAL. SCARIFY AREAS
ON WHICH FILL IS TO BE PLACED BEFORE PLACING FILL. THE FILL MATERIAL PVC VENT PIPE
MUST CONTAIN SUFFICIENT MOISTURE SO IT CAN BE FORMED BY HAND INTO A
BALL WITHOUT CRUMBLING. IF WATER CAN BE SQUEEZED OUT OF THE BALL, IT IS
TOO WET FOR PROPER COMPACTION. PLACE FILL MATERIAL IN 6 TO 8 INCH
CONTINUOUS LAYERS OVER THE ENTIRE LENGTH OF THE FILL AREA AND
COMPACT IT. COMPACTION MAY BE OBTAINED BY ROUTING THE CONSTRUCTION
HAULING EQUIPMENT OVER THE FILL SO THAT THE ENTIRE SURFACE OF EACH
LAYER IS TRAVERSED BY AT LEAST ONE WHEEL OR TREAD TRACK OF HEAVY
EQUIPMENT, OR A COMPACTOR MAY BE USED. CONSTRUCT THE EMBANKMENT
TO AN ELEVATION 10 % HIGHER THAN THE DESIGN HEIGHT TO ALLOW FOR
SETTLING.
4. SECURELY ATTACH THE RISER TO THE BARREL OR BARREL STUB TO MAKE A
WATERTIGHT STRUCTURAL CONNECTION. SECURE ALL CONNECTIONS BETWEEN FLEXIBLE HOSE
BARREL SECTIONS BY APPROVED WATERTIGHT ASSEMBLIES. PLACE THE
BARREL AND RISER ON A FIRM, SMOOTH FOUNDATION OF IMPERVIOUS SOIL. DO
NOT USE PERVIOUS MATERIAL SUCH AS SAND, GRAVEL, OR CRUSHED STONE AS
BACKFILL AROUND THE PIPE OR ANTISEEP COLLARS. PLACE THE FILL MATERIAL
AROUND THE PIPE SPILLWAY IN 4INCH LAYERS, AND COMPACT IT UNDER AND
AROUND THE PIPE TO AT LEAST THE SAME DENSITY AS THE ADJACENT
EMBANKMENT. CARE MUST BE TAKEN NOT TO RAISE THE PIPE FROM FIRM SCH 40 PVC **SKIMMER CAN BE PURCHASED FROM J.W. FAIRCLOTH & SON INC.
CONTACT WITH ITS FOUNDATION WHEN COMPACTING UNDER THE PIPE PIPE SKIMMER CHOSEN SHALL BE EQUAL TO THE FAIRCLOTH SKIMMER.
HAUNCHES. PLACE A MINIMUM DEPTH OF 2 FEET OF COMPACTED BACKFILL
OVER THE PIPE SPILLWAY BEFORE CROSSING IT WITH CONSTRUCTION
EQUIPMENT. ANCHOR THE RISER IN PLACE BY CONCRETE OR OTHER SKIMMER
SATISFACTORY MEANS TO PREVENT FLOTATION. IN NO CASE SHOULD THE PIPE
CONDUIT BE INSTALLED BY CUTTING A TRENCH THROUGH THE DAM AFTER THE
EMBANKMENT IS COMPLETE.
MAINTENANCE
5. INSTALL THE EMERGENCY SPILLWAY IN UNDISTURBED SOIL. THE
ACHIEVEMENT OF PLANNED ELEVATIONS, GRADE, DESIGN WIDTH, AND INSPECT TEMPORARY SEDIMENT BASINS WEEKLY AND AFTER EACH PERIOD OF
ENTRANCE AND EXIT CHANNEL SLOPES ARE CRITICAL TO THE SUCCESSFUL SIGNIFICANT RAINFALL. REMOVE SEDIMENT AND RESTORE TRAP TO ITS ORIGINAL
OPERATION OF THE EMERGENCY SPILLWAY. DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN
DEPTH OF THE TRAP. PLACE THE SEDIMENT THAT IS REMOVED IN AN AREA WITH
6. DISCHARGE THE WATER INTO THE BASIN IN A MANNER TO PREVENT EROSION. SEDIMENT CONTROLS.
USE DIVERSIONS WITH OUTLET PROTECTION TO DIVERT SEDIMENT -LADEN
WATER TO THE UPPER END OF THE POOL AREA TO IMPROVE TRAP EFFICIENCY. CHECK THE EMBANKMENT, SPILLWAYS, AND OUTLET FOR EROSION DAMAGE AND
INSPECT THE EMBANKMENT FOR
7. CONSTRUCT THE STRUCTURE SO THAT THE DISTURBED AREA IS MINIMIZED. PIPING AND SETTLEMENT. MAKE ALL NECESSARY REPAIRS IMMEDIATELY. REMOVE
DIVERT SURFACE WATER AWAY FROM BARE AREAS. COMPLETE THE ALL TRASH AND OTHER DEBRIS FROM THE RISER AND POOL AREA.
EMBANKMENT BEFORE THE AREA IS CLEARED.
8. INSTALL POROUS BAFFLES AS SPECIFIED.
9. AVOID STEEP SIDE SLOPES, AND FENCE AND MARK BASINS WITH WARNING NTS
SIGNS IF TRESPASSING IS LIKELY. FOLLOW ALL STATE AND LOCAL
REQUIREMENTS.
5 TEMPORARY SEDIMENT BASIN
DRIVE STEEL POSTS 18" INTO THE GROUND ATTACH WIRE FENCE TO POSTS AND EXTEND NOTES:
MAXIMUM 8' O.C. AND EXCAVATE A 4" X 8" THE BOTTOM OF THE FENCE 8" INTO THE
TRENCH UPHILL ALONG THE LINE OF EXCAVATED TRENCH AND TURNED OUT
POSTS. 4" IN THE TRENCH. 1. WIRE SHALL BE A MINIMUM OF 32 INCHES IN WIDTH AND
TOP & BOTTOM STRAND SHALL HAVE A MINIMUM OF 6 WIRES WITH 12" STAY SPACING.
MIN. 10 GA. WIRE
2. FILTER FABRIC SHALL BE A MINIMUM OF 36" IN WIDTH AND
STEEL POSTS STAY WIRES SHALL BE FASTENED ADEQUATELY TO THE WIRE WITH #9 WIRE
*,MNA STAPLES 1-1/2" LONG. FABRIC THAT DETERIORATES TO SUCH
E WIRES EXTENT THAT IT'S EFFECTIVENESS IS REDUCED SHALL BE
N. WIRES
REPLACED BY CONTRACTOR AT CONTRACTOR'S EXPENSE.
3. STEEL POSTS SHALL BE A MIN. OF 5' HEIGHT AND SHALL BE
THE SELF FASTENER ANGLE STEEL TYPE.
4. CONTRACTOR SHALL REVIEW SILT FENCE ONCE PER WEEK
AND AFTER EACH RAINFALL OCCURRENCE. ANY NECESSARY
REPAIRS OR CLEAN-UP TO MAINTAIN THE EFFECTIVENESS OF
THE DEVICE SHALL BE MADE IMMEDIATELY.
- 1� / 5. REMOVE DEPOSITED SEDIMENT ALONG THE FENCE TO
j�•' PROVIDE ADEQUATE STORAGE VOLUME AND TO REDUCE
-,/ PRESSURE ON THE FENCE AS NEEDED.
STEP 1 STEP 2 U
5. TEMPORARY MEASURE SHALL NOT BE REMOVED BY THE
CONTRACTOR UNTIL THIS ACTION IS APPROVED BY AN NCDENR
ATTACH THE FILTER FABRIC TO THE WIRE FENCE, BACKFILL THE TRENCH AND COMPACT THE SOIL REPRESENTATIVE. THE ACTION WILL BE APPROVED WHEN THE
EXTEND THE BOTTOM OF THE FABRIC 8" INTO THE FIRMLY TO ANCHOR THE BOTTOM OF THE SILT CONTRIBUTING DRAINAGE AREA IS STABLE.
TRENCH AND TURNED OUT 4" IN THE TRENCH. FENCE. BURIED FABRIC SHALL NOT BE VISIBLE.
POSTS MAX 8' O.C.
WIRE FENCE "HOG WIRE"
A c FILTER FABRIC
#9 WIRE STAPLES 1-1/2" LONG
_ \ T 1I`` �-• .f� _ BOTTOM OF WIRE FENCE AND
�- O FILTER FABRIC BURIED 8" IN
\ w EXCAVATED TRENCH &TURNED
x OUT 4" IN THE TRENCH
FLOW
STEEL POST DRIVEN
-------- 24" INTO GROUND
STEP 3 STEP 4 SECTION A -A
MAINTENANCE
1. INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED REPAIRS IMMEDIATELY.
2. SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
3. 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. ■ T /.�
4. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO GRADE AND STABILIZE AFTER NTS
THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED AND NCDENR APPROVES REMOVAL.
8 SILT FENCE
It��A/�I/ifr'�II�I •.�Irlf���I
lie
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I I
-III-III=� ' _
1-11 I-
-III-III-
SECTION A -A
NOTES
1. LA IS THE LENGTH OF THE RIPRAP
APRON.(SEE EC PLAN)
2. D = 1.5 TIMES THE MAXIMUM
STONE DIAMETER BUT NOT LESS
THAN 6".
J J 11TITIITITIIT�''- D
FILTER LAYER
GRAVEL OR FABRIC
3. IN A WELL-DEFINED CHANNEL EXTEND
THE APRON THE REQUIRED 4' WIDTH
OR UP TO THE TOP OF THE CHANNEL
BANKS, WHICHEVER IS LESS.
4. A FILTER FABRIC OR BLANKET SHOULD BE
INSTALLED BETWEEN THE RIPRAP
AND SOIL FOUNDATION.
11 TYPICAL RIP RAP APRON
NTS
site
solutions
civil engineering I Land surveying
409 Chicago Drive, Suite 112, Fayetteville, NC 28306
office 910-426-6777 fax [phone] license number I C-2354
www.4Dsitesotutions.com
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REVISIONS
PROJECT NAME
SOUTHVIEW
PARK
SUBDIVISION
(ZERO LOT LINE)
EROSION
CONTROL
DETAILS
CLIENT
FAITHWILL HOMES
3840 Legion Road
Hope Mills, North Carolina 28348
Phone: [phone]
PROJECT INFORMATION
DESIGNED BY:
SEAN
DRAWN BY:
BRETT
CHECKED BY:
SCOTT
PROJECT NUMBER:
1722
DRAWING SCALE
NOT TO SCALE
DATE RELEASED
APRIL 27, 2022
SHEET NUMBER
C-600