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DocuSign Envelope ID: 72E7BD50- E5C5- 4BEA- B4AA- FCA907469BF8
<br />SKIMMER BASIN CON RUCTION (CATIONS:
<br />1. C B ND S E AREA _ EMBANKMENT
<br />ALL VEGET ION AND R OT MAT. REMOVE ALL S FACE SOIL
<br />CONTAINING HIGH AMOUNTS OF ORGANIC MATTER AND OCKPILE
<br />? OR DISPOSE OF IT PROPERLY. HAUL ALL OBJECTIONABLE ATERIAL
<br />:2 a_ 12' TOP OF TO THE DESIGNATED DISPOSAL AREA. PLACE TEMPORARY S DIMENT
<br />BANK CONTROL MEASURES BELOW BASIN AS NEEDED.
<br />t OVERFLOW 2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS REE OF
<br />SPILLWAY ROOTS, WOODY VEGETATION, ORGANIC MATTER, AND OTHER
<br />LINE SPILLWAY WITH OBJECTIONABLE MATERIAL. PLACE THE FILL IN LIFTS NOT TO XCEED
<br />I�8' MIN.- 9 INCHES, AND MACHINE COMPACT IT. OVER FILL THE EMBAN ENT
<br />TARP 12 MIN. EA.
<br />SECTION B -B 6 INCHES TO ALLOW FOR SETTLEMENT.
<br />SIDE AND ENTIRE 3. SHAPE THE BASIN TO THE SPECIFIED DIMENSIONS. PREVENT THE
<br />? B BOTTOM, TYP. SKIMMING DEVICE FROM SETTLING INTO THE MUD BY EXCAVATI G A
<br />TOP OF BANK, # SHALLOW PIT UNDER THE SKIMMER OR PROVIDING A LOW SU ORT
<br />0 4' MIN. -{ I VARIES, SEE PLAN INLET 3 UNDER THE SKIMMER OF STONE OR TIMBER.
<br />4. PLACE THE BARREL (TYPICALLY 4 -INCH SCHEDULE 40 PVC PE)
<br />OVERFLOW = ,3� OVERFLOW ON A FIRM, SMOOTH FOUNDATION OF IMPERVIOUS SOIL. DO NOT S
<br />SPILLWAY SPILLWA } ELEV. = SEE STORM PERVIOUS MATERIAL SUCH AS SAND, GRAVEL, OR CRUSHED STO E
<br />LINE SPILLWAY AND BOTTOM 9� + SCHEDULE AS BACKFILL AROUND THE PIPE. PLACE THE FILL MATERIAL AR N
<br />EMBANKMENT _ THE PIPE SPILLWAY IN 4 -INCH LAYERS AND COMPACT IT UND
<br />COMPLETELY WITH '� B AND AROUND THE PIPE TO AT LEAST THE SAME DENSITY AS T
<br />IMPERMEABLE LINER �� '�' ADJACENT EMBANKMENT. CARE MUST BE TAKEN NOT TO RAISE T E
<br />ON OUTFLOW DEPTH OF BASIN, MAX. PIPE FROM THE FIRM CONTACT WITH ITS FOUNDATION WHEN
<br />SIDE `v COMPACTING UNDER THE PIPE HAUNCHES. PLACE A MINIMUM DEP HI
<br />2" SCHEDULE 40 OF 2 FEET OF COMPACTED BACKFILL OVER THE PIPE SPILLWAY
<br />2" b OUTLET DRAWDOWN - DEWATERING BEFORE CROSSING IT WITH CONSTRUCTION EQUIPMENT. IN NO SE
<br />EXTEND TARP BARREL © ORIFICE SHOULD THE PIPE CONDUIT BE INSTALLED BY CUTTING A TRENC
<br />2' MIN. BEYOND 1% SLOPE, MIN. THROUGH THE DAM AFTER THE EMBANKMENT IS COMPLETE.
<br />END OF PIPE SECTION A -A 5. ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURERS
<br />NOTE: FASTEN IMPERMEABLE LINER AT 6" O.C. AT EDGE AND 6" O.C. STAGGERED IN FIELD INSTRUCTIONS, OR AS DESIGNED.
<br />WITH 6" LONG WIRE STAPLES, TYP. 6. LAY THE ASSEMBLED SKIMMER ON THE BOTTOM OF THE BASI
<br />PERFORATED "SKIMMER " -2" WITH THE FLEXIBLE JOINT AT THE INLET OF THE BARREL PIPE.
<br />ADS PIPE WITH ROPE FOR MAINTENANCE ATTACH THE FLEXIBLE JOINT TO THE BARREL PIPE AND POSITI
<br />STABILIZING PAD STORM INLET #3 THE SKIMMER OVER THE EXCAVATED PIT OR SUPPORT. BE SURE TO
<br />SEDIMENT ATTACH A ROPE TO THE SKIMMER AND ANCHOR IT TO THE SIDE F
<br />SEE DETAIL 8A/C5.1 STORAGE POND THE BASIN. THIS WILL BE USED TO PULL THE SKIMMER TO THE S DE
<br />FOR MAINTENANCE.
<br />4'X4' -18" DEEP
<br />f WASHED STONE 7. EARTHEN SPILLWAYS- INSTALL THE SPILLWAY IN UNDISTURB
<br />PAD FOR SKIMMER SOIL TO THE GREATEST EXTENT POSSIBLE. THE ACHIEVEMENT 0
<br />A A PLANNED ELEVATIONS, GRADE, DESIGN WIDTH, AND ENTRANCE AN
<br />EXIT CHANNEL SLOPES ARE CRITICAL TO THE SUCCESSFUL
<br />OPERATION OF THE SPILLWAY. THE SPILLWAY SHOULD BE LINED
<br />00��1 WITH LAMINATED PLASTIC OR IMPERMEABLE GEOTEXTILE FABRIC. T E
<br />FABRIC MUST BE WIDE AND LONG ENOUGH TO COVER THE BOTT
<br />AND SIDES AND EXTEND ONTO THE TOP OF THE DAM FOR
<br />2" SCHEDULE 40 ANCHORING IN A TRENCH. THE EDGES MAY BE SECURED WITH
<br />DRAWDOWN-DEWATER G 8 -INCH STAPLES OR PINS. THE FABRIC MUST BE LONG ENOUGH T
<br />ORiFiCE TIE TO STORM TO EXTEND DOWN THE SLOPE AND EXIT ONTO STABLE GROUND. TH
<br />INLET #3 WIDTH OF THE FABRIC MUST BE ONE PIECE, NOT JOINED OR
<br />SPLICED; OTHERWISE WATER CAN GET UNDER THE FABRIC. IF THE
<br />LENGTH OF THE FABRIC IS INSUFFICIENT FOR THE ENTIRE LENG
<br />PLAN OF THE SPILLWAY, MULTIPLE SECTIONS, SPANNING THE COMPETE
<br />1 SKIMMER BASIN DETAIL WIDTH, MAY BE USED. THE UPPER SECTIONS) SHOULD OVERLAP
<br />THE LOWER SECTION(S) SO THAT WATER CANNOT FLOW UNDER TH
<br />SCALE: N.T.S. FABRIC. SECURE THE UPPER EDGE AND SIDES OF THE FABRIC IN
<br />C5.1 TRENCH WITH STAPLES OR PINS.
<br />8. INLETS - DISCHARGE WATER INTO THE BASIN IN A MANNER T
<br />PREVENT EROSION. USE TEMPORARY SLOPE DRAINS OR DIVERSI NS
<br />NOTES: WITH OUTLET PROTECTION TO DIVERT SEDIMENT -LADEN WATER T
<br />PROVIDE BAFFLES (3 EA.) WITH THE UPPER END OF THE POOL AREA TO IMPROVE BASIN TRAP
<br />> THE SKIMMER BASIN TO CREATE EFFICIENCY.
<br />/ DIFFUSE FLOW (SEE DETAIL 15) 9. EROSION CONTROL- CONSTRUCT THE STRUCTURE SO THAT E
<br />DISTURBED AREA IS MINIMIZED. DIVERT SURFACE WATER AW FROM
<br />BARE AREAS. COMPLETE THE EMBANKMENT BEFORE THE AR A IS
<br />CLEARED. STABILIZE THE EMERGENCY SPILLWAY EMBANKMEN AND
<br />ALL OTHER DISTURBED AREAS ABOVE THE CREST OF THE P INCIPAL
<br />SPILLWAY IMMEDIATELY AFTER CONSTRUCTION.
<br />10. INSTALL POROUS BAFFLES AS SPECIFIED IN PRACTIC .65,
<br />POROUS BAFFLES
<br />11. AFTER ALL THE SEDIMEN - PRODUCIN REAS E BEEN
<br />PERMANENTLY STABILIZED, - = STRU E AND ALL THE
<br />UN TABLE SEDIM T. SM TH THE AREA TO BLEND WITH THE
<br />J ING AR S A STABILIZE PROPERLY.
<br />''PSTREAM END OF
<br />TORM DRAIN
<br />URY
<br />TTO M
<br />OF
<br />Woo[
<br />EXTERIOR PLYWOOD
<br />PLYWOOD INLET PROTECTION
<br />STEEL FENCE
<br />POST (TYP.)
<br />UPSTREAM END OF
<br />STORM DRAIN
<br />WASHED
<br />STONE
<br />I FILTER °
<br />ACROSS
<br />PIPE °
<br />INLET _ IF
<br />_1777 T
<br />ti .I r ti -I III -I 1 =1 -I
<br />-I 1 -I � 1_I _ � =1 11 =1 1-
<br />I I I
<br />�I (1 �j (� �l (J HARDWARE CLOTH
<br />STONE FILTER INLET PROTECTION
<br />-OVERFLOW
<br />i
<br />t 1/3 PIPE
<br />DIAMETER
<br />J
<br />OVERFLOW
<br />1/3 PIPE
<br />DIAMETER
<br />NOTE: ALL PARTIALLY COMPLETED STORM DRAINS SHALL BE PROTECTED
<br />AT THE END OF EACH DAY IN ACCORDANCE WITH THESE DETAILS.
<br />PIPE INSTALLATION PROTECTION
<br />5 "� (PLYWOOD AND STONE)
<br />SCALE: N.T.S. 0000 /DIV- 02/0273OA03.DWG
<br />5.1)
<br />CLASS 1 OR B
<br />EROSION CONTROL
<br />STONE
<br />NOTE:
<br />ADD #57 WASHED STONE TO
<br />UPSTREAM SIDE (TYP.).
<br />24" MAX.
<br />AT CENTER
<br />Z
<br />i
<br />SECTION A -A
<br />STONE SHOULD BE PLACED OVER THE CHANNEL BANKS
<br />TO KEEP WATER FROM CUTTING AROUND THE DAM.
<br />('6_�` STONE CHECK DAM
<br />SEEDBED PREPARATION
<br />1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3 INCHES DEEP
<br />OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE.
<br />2. RIP THE ENTIRE AREA TO 6 INCHES DEPTH.
<br />3. REMOVE ALL LOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING
<br />SURFACE REASONABLY SMOOTH AND UNIFORM.
<br />4. APPLY AGRICULTURAL LIME, FERTILIZER, AND SUPERPHOSPHATE
<br />UNIFORMLY AND MIX WITH SOIL (SEE BELOW *).
<br />5. CONTINUE TILLAGE UNTIL A WELL- PULVERIZED, FIRM REASONABLY
<br />UNIFORM SEEDBED IS PREPARED 4 TO 6 INCHES DEEP.
<br />6. SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY
<br />WITH SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING.
<br />7. MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH.
<br />8. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR
<br />RESEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE. IF STAND
<br />SHOULD BE OVER 60% DAMAGED, RE- ESTABLISH FOLLOWING ORIGINAL
<br />LIME, FERTILIZER AND SEEDING RATES.
<br />9. CONSULT CONSERVATION INSPECTOR ON MAINTENANCE TREATMENT
<br />AND FERTILIZATION AFTER PERMANENT COVER IS ESTABLISHED.
<br />* SEE SEASONAL APPLICATION SCHEDULE
<br />9 SEEDBED PREPARATION
<br />✓5.1 SCALE: N.T.S. 0000 /NC -SEDMT /SEEDBED- PREP.DWG
<br />0
<br />1
<br />Z
<br />NOTES:
<br />FILTER BLANKET
<br />1. TOTAL DRAINAGE AREA FLOWING
<br />TO FENCE
<br />FENCE MAY NOT EXCEED 1 ACRE.
<br />SILT
<br />/
<br />SEE
<br />III, FLOW OF
<br />ITORPGE
<br />2. SILT FENCES SHOULD NOT BE
<br />USED \ I I ► I I I p1T WATER
<br />AT PIPE OUTLETS OR IN AREAS OF E� °t� EpIMENT S \
<br />CONCENTRATED FLOW (CREEKS,
<br />o
<br />DITCHLINES, SWALES, ETC.).
<br />SILT FENCE 0 TLET
<br />TO INCREASE STORAGE CAPACITY AND PROLONG
<br />THE LIFE OF THE SILT FENCE, IT IS GENERALLY
<br />ADVISABLE TO DIG A
<br />SEDIMENT PIT IN FRONT
<br />OF YOUR SILT FENCE
<br />WHENEVER POSSIBLE.
<br />IN WELL-
<br />12 GAUGE 4 "x4" OR 2 "x4" WELDED WIRE
<br />HOOKED ONTO PREFORMED CHANNELS ON
<br />OF 6" ABOVE THE MAXIMUM TAILWATER DEPTH OR TO
<br />METAL POSTS, OR FASTENED TO CEDAR
<br />THE TOP
<br />OR WOOD POSTS WITH NO.8 STAPLES.
<br />5.
<br />ULTRAVIOLET RESISTANT (BLACK) FILTER
<br />BLANKET OR FILTER FABRIC SHALL BE INSTALLED BETWEEN
<br />FABRIC OR EQUIVALENT SECURED TO
<br />°
<br />WIRE WITH METAL CLIPS OR WIRE AT 8"
<br />°
<br />OFF CENTER.
<br />8B
<br />MAX. SEDIMENT STORAGE LEVEL.
<br />°
<br />REMOVE SEDIMENT WHEN THIS LEVEL IS
<br />FLOW 5% MAX.
<br />REACHED OR AS DIRECTED BY
<br />°
<br />° °
<br />CONSERVATION INSPECTOR.
<br />° °
<br />8'0
<br />COVER WITH SOIL AND TAMP
<br />- _
<br />° ° _ .. _ .. _
<br />BACKFILL. SHEET DRAINAGE (ONLY)
<br />°
<br />IN THE PIEDMONT AND MOUNTAINS, A SMALL - STEMMED SUDANGRASS MAY BE
<br />- - - - -
<br />°_ _.._.._.._..
<br />NATURAL RA
<br />U L G DE
<br />_
<br />-_ - .. _
<br />CARRY APPROX.12" OF FABRIC
<br />PIEDMONT; AUG. 15 - DEC. 30
<br />INTO TRENCH
<br />CONSTRUCTION SPECIFICATIONS
<br />CARRY 6 OF WIRE INTO TRENCH.
<br />COASTAL PLAIN; AUG. 15 - DEC. 30
<br />METAL, CEDAR OR 4 "x4"
<br />_
<br />TREATED WOOD POSTS AT 8'
<br />--
<br />O.C. MAX.. CEDAR AND WOOD
<br />2. PLACE FILTER BAG ON SUITABLE BASE (E.G., MULCH, LEAF/WOOD COMPOST, WOODCHIPS, SAND, OR
<br />POSTS SHOULD BE 3' DEEP MIN.
<br />2 SILT FENCE DETAIL
<br />X5.1 SCALE: N.T.S. 0000 /NC- SEDMT /NC662AD.DWG
<br />NOTES:
<br />1. TOTAL DRAINAGE AREA FLOWING TO FENCE MAY NOT EXCEED 1 ACRE.
<br />2. SILT FENCES SHOULD NOT BE USED AT PIPE OUTLETS OR IN AREAS OF
<br />CONCENTRATED FLOW (CREEKS, DITCHLINES, SWALES, ETC.).
<br />MAINTENANCE:
<br />INSPECT TEMPORARY DITCHES ONCE EVERY WEEK AND AFTER
<br />EVERY RAINFALL, IMMEDIATELY REMOVE SEDIMENT FROM THE
<br />FLOW AREA AND REPAIR THE DITCH RIDGE. CAREFULLY CHECK
<br />OUTLETS AND MAKE TIMELY REPAIRS AS NEEDED. WHEN THE
<br />AREA PROTECTED IS PERMANENTLY STABILIZED, REMOVE THE
<br />RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL GROUND
<br />LEVEL AND APPROPRIATELY STABILIZE IT.
<br />COMPACTED 2' MIN 3:1 SIDE
<br />SOIL SLOPES DITCH ON
<br />PROJECT
<br />SITE SIDE
<br />W
<br />18 MIN LO
<br />F
<br />......
<br />III I II -III II1=1 II II1=1 -1 II I II_
<br />(III � II � IIIIIIII � II � IIIIIIIIIIIIII � II � II � I I C I I � II � II � I I �,, I � I
<br />6' TYPICAL B TTOM WIDTH ADD LINER
<br />TEMPORARY SILT DITCH
<br />SCALE: N.T.S. 0000 /NC- SEDMT /NC683BD.DWG C5.1 SCALE: N.T.S. 0000 /NC- SEDMT /NC620AD.DWG
<br />NOTE: EACH DITCH TO CARRY 2.28 CFS
<br />TEMPORARY SEEDING FOR LATE WINTER AND EARLY SPRING
<br />SEEDING MIXTURE:
<br />SPECIES RATE (LB /ACRE)
<br />RYE (GRAIN) 120
<br />ANNUAL LESPEDEZA (KOBE IN PIEDMONT
<br />AND COASTAL PLAIN
<br />KOREAN IN MOUNTAINS) 50
<br />OMIT ANNUAL LESPEDEZA WHEN DURATION OF TEMPORARY COVER IS NOT TO
<br />EXTEND BEYOND JUNE.
<br />SEEDING DATES:
<br />MOUNTAINS; ABOVE 2500 FT: FEB. 15 - MAY 15
<br />BELOW 2500 FT: FEB. 1 - MAY 1
<br />PIEDMONT; JAN. 1 - MAY 1
<br />COASTAL PLAIN; DEC. 1 - APR. 15
<br />SOIL AMENDMENTS:
<br />FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 LB /ACRE
<br />GROUND AGRICULTURAL LIMESTONE AND 750 LB /ACRE 10 -20 -20 FERTILIZER.
<br />MULCH:
<br />APPLY 4,000 LB /ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT
<br />NETTING, OR A MULCH ANCHORING TOOL. A DISK
<br />WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING
<br />TOOL.
<br />MAINTENANCE:
<br />REFERTILIZE IF GROWTH IS NOT FULLY ADEQUATE. RESEED, REFERTILIZE AND
<br />MULCH IMMEDIATELY FOLLOWING EROSION OR OTHER DAMAGE.
<br />TEMPORARY SEEDING FOR LATE
<br />(j0 )IWINTER AND EARLY SPRING
<br />SCALE: N.T.S.
<br />0000 /NC -SEDMT /SEEDING- TEMPA.DWG
<br />TO DITCHES
<br />(SEE DETAIL
<br />17/C5,2)
<br />CONSTRUCTION SPECIFICATIONS: DEWATERING
<br />1. LAY ONE BLOCK ON EACH CONCRETE BLOCK
<br />SIDE OF THE STRUCTURE ON 0 0 0 0
<br />ITS SIDE ON THE BOTTOM ROW p - , 4 0 0
<br />TO ALLOW POOL DRAINAGE. - b'
<br />THE FOUNDATION SHOULD BE ��� C a
<br />EXCAVATED AT LEAST 2" om°° 0
<br />01D
<br />BELOW THE CREST OF THE ° o
<br />STORM DRAIN. PLACE THE
<br />BOTTOM ROW OF THE BLOCK 8D °
<br />AGAINST THE EDGE OF THE
<br />STORM DRAIN FOR LATERAL
<br />SUPPORT AND TO AVOID
<br />WASHOUTS WHEN OVERFLOW n
<br />OCCURS. IF NEEDED, GIVE 00 M0000o o0ac0000cco
<br />LATERAL SUPPORT TO
<br />SUBSEQUENT ROWS BY
<br />PLACING 2x4 WOOD STUDS
<br />THROUGH BLOCK OPENINGS. 2:1 SLOPE, GRAVEL FILTER
<br />2. CAREFULLY FIT HARDWARE WIRE SCREEN
<br />CLOTH OR COMPARABLE WIRE TEMPORARY SEDIMENT
<br />MESH WITH 1/2" OPENING POOL DEWATERING
<br />OVER ALL BLOCK OPENINGS TO
<br />HOLD GRAVEL IN PLACE.
<br />16 ........................... ...............................
<br />3. USE CLEAN GRAVEL
<br />1 MIN.
<br />:..................... ...............................
<br />3/4" TO 1/2" IN DIAMETER,
<br />PLACED 2" BELOW THE TOP .. II- III =III
<br />. I I -1 i 1 =1 11 =1 11 =1 11 =1 11 =1 I
<br />OF THE BLOCK ON A 2:1 I =1 I I =1 I I III =1 I I- III - III -I 11 =1 11 =1 11=
<br />SLOPE OR FLATTER AND III -III - II= III -1I1 -III �III1= 1I1= 1I1 =11
<br />SMOOTH IT TO AN EVEN - 11111111 =III_
<br />I I I_I
<br />GRADE. #57 WASHED SEDIMENT I ;1111=
<br />STONE IS RECOMMENDED.
<br />NOTE:
<br />CONTRACTOR IS PERMITTED TO USE MANUFACTURED INLET PROTECTION DEVICES WITH PRIOR
<br />APPROVAL OF THE ENGINEER OF RECORD.
<br />3 BLOCK AND GRAVEL DROP INLET PROTECTION r4
<br />C5.1 SCALE: N.T.S. 0000 /NC- SEDMT /NC652AD.DWG C5.
<br />Pipe Outlet to Flat Area -
<br />No Well- defined Channel
<br />3d0 A _
<br />o
<br />EMBANKMENT OF
<br />SEDIMENT BASIN
<br />Plan
<br />n
<br />a
<br />L
<br />I
<br />�wav1 aWN
<br />.w
<br />i
<br />A A
<br />12' LENGTH
<br />10' WIDTH
<br />7
<br />MAINTENANCE:
<br />INSPECT RIPRAP OUTLET STRUCTURE WEEKLY AND AFTER SIGNIFICANT (1/2 INCH OR
<br />GREATER) RAINFALL EVENTS TO SEE IF ANY EROSION AROUND OR BELOW THE RIPRAP
<br />HAS TAKEN PLACE, OR IF STONES HAVE BEEN DISLODGED. IMMEDIATELY MAKE ALL
<br />NEEDED REPAIRS TO PREVENT FURTHER DAMAGE
<br />PIPE CULVERT OUTLET PROTECTION
<br />8A FOR UNDEFINED CHANNEL
<br />C5. SCALE: N.T.S. 0000 /NC- SEDMT /NC641C2
<br />PLAN
<br />NOTES:
<br />1. APPLICABLE AT ALL POINTS OF INGRESS AND EGRESS
<br />UNTIL SITE IS STABILIZED, FREQUENT CHECKS OF THE
<br />DEVICE AND TIMELY MAINTENANCE SHALL BE PROVIDED.
<br />2. GRAVEL PAD SHALL BE 12'x50' AND 6" THICK MINIMUM.
<br />3. TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE
<br />TRUCKS SHALL BE PROVIDED.
<br />4. ENTRANCE(S) SHALL BE LOCATED TO PROVIDE FOR
<br />MAXIMUM UTILITY BY ALL CONSTRUCTION VEHICLES.
<br />5. SHALL BE MAINTAINED IN A CONDITION WHICH WILL
<br />PREVENT TRACKING OR DIRECT FLOW OF MUD ONTO
<br />STREETS. PERIODIC TOP DRESSING WITH STONE SHALL
<br />BE NECESSARY; KEEP EXTRA STONE HANDY.
<br />6. ANY MUD /MATERIAL WHICH STILL MAKES IT ONTO THE
<br />ROAD SHALL BE CLEANED UP IMMEDIATELY.
<br />TEMPORARY CONSTRUCTION ENTRANCE /EXIT
<br />SCALE: N.T.S.
<br />A
<br />10
<br />I I
<br />CLASS "B"
<br />STONE
<br />i5.1/ SCALE: N.T.S. 0000 /NC- SEDMT /NC641C2D.DWG
<br />0000 /NC- SEDMT /NC606AD -1.DWG
<br />FILTER BLANKET
<br />OR WASHED
<br />NOTES:
<br />SECTION A -A STONE ( #57)
<br />SEE
<br />APPROPRIATE SCHEDULE FOR DIMENSIONS
<br />1.
<br />L IS THE
<br />LENGTH OF THE RIPRAP APRON.
<br />2.
<br />W IS THE
<br />WIDTH OF THE RIPRAP APRON.
<br />3.
<br />D = 1.5
<br />TIMES THE MAXIMUM STONE DIAMETER
<br />,;°. °FiL??rc °-
<br />BUT NOT
<br />LESS THAN 6 ".
<br />4.
<br />IN WELL-
<br />DEFINED AREAS EXTEND THE APRON UP THE CHANNEL BANKS
<br />TO AN ELEVATION
<br />OF 6" ABOVE THE MAXIMUM TAILWATER DEPTH OR TO
<br />THE TOP
<br />OF THE BANK WHICH EVER IS LESS.
<br />5.
<br />A FILTER
<br />BLANKET OR FILTER FABRIC SHALL BE INSTALLED BETWEEN
<br />Best Possible
<br />Fall: Aug. 25 -Sept. 15 Aug. 20 -Oct. 25
<br />THE RIPRAP AND SOIL FOUNDATION.
<br />SEEDING MIXTURE:
<br />PIPE
<br />CULVERT OUTLET PROTECTION
<br />8B
<br />FOR
<br />DEFINED CHANNEL
<br />i5.1/ SCALE: N.T.S. 0000 /NC- SEDMT /NC641C2D.DWG
<br />0000 /NC- SEDMT /NC606AD -1.DWG
<br />SCALE: N.T.S. N.T.S.
<br />device: \ \CRZSVR2 \Canon iR4570 PS3 file name: N: \1613 Sportsplex Fieldhouse \Civil \CAD Files Current \1613 Sportsplex Field Houselfiyi��Rlaam6:ENTY/C��T.dwg date /time printed: 9/29/2017 2:34:46 PM
<br />222 cloister court
<br />chapel hill, nc 27514
<br />919.401 .8586
<br />www.cra- ae.com
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<br />N L
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<br />Z 0
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<br />no. revisions
<br />17 NCDEQ RESPONSE
<br />TO COMMENTS
<br />8/30/17
<br />NCDEQ RESPONSE
<br />TO COMMENTS
<br />9/01/17
<br />NCDENR REVISION
<br />#3 09/26/17
<br />drawn checked
<br />ETS MLH
<br />EROSION
<br />CONTROL
<br />DETAILS
<br />sheet
<br />C5ml
<br />date project no.
<br />09/11/2017 1613
<br />PERMANENT SEEDING FOR GENTLE SLOPES, AVERAGE SOIL; HIGH MAINTENANCE
<br />SEEDING MIXTURE
<br />SPECIES RATE (lb /acre)
<br />STRAP
<br />Blend of two turf type tall
<br />FLOW
<br />fescues (90 %) and two or
<br />,;°. °FiL??rc °-
<br />more improved Kentucky
<br />bluegrass varieties (10 %) 200 -250
<br />TEMPORARY SEEDING FOR FALL
<br />SEEDING DATES
<br />Nt
<br />PUMP DISCHARGE HOSE 12 IN MIN.
<br />TEMPORARY SEEDING FOR SUMMER
<br />SEEDING MIXTURE:
<br />Best Possible
<br />Fall: Aug. 25 -Sept. 15 Aug. 20 -Oct. 25
<br />ULCH, LEAF /WOOD COMPOST,
<br />PLAN VIEW wOODCHIPS, SAND. OR STRAW BALES
<br />-
<br />SEEDING MIXTURE:
<br />SPECIES RATE (LB /ACRE)
<br />Late Winter: - Feb. 1 -Apr. 15
<br />STRAP
<br />SLOPE
<br />SPECIES RATE (LB/ACRE)
<br />RYE GRAIN 120
<br />For unlit turf avoid spring seeding. Where grading is completed during
<br />FLOW 5% MAX.
<br />GERMAN MILLET 40
<br />late winter or spring, an alternative is to seed 30 lb/ac Kobe lespedeza,
<br />�F
<br />SEEDING DATES:
<br />keep mowed, prepare seedbed, and seed a permanent mixture in early fall.
<br />ELEVATION FILTER BAG
<br />IN THE PIEDMONT AND MOUNTAINS, A SMALL - STEMMED SUDANGRASS MAY BE
<br />MOUNTAINS; AUG. 15 - DEC. 15
<br />8 IN MIN.
<br />SUBSTITUTED AT A RATE OF 50 LB /ACRE
<br />PIEDMONT; AUG. 15 - DEC. 30
<br />SOIL AMENDMENTS
<br />CONSTRUCTION SPECIFICATIONS
<br />COASTAL PLAIN; AUG. 15 - DEC. 30
<br />Apply lime and fertilizer according to soil test, or apply 4,000 lb/acre
<br />1. TIGHTLY SEAL SLEEVE AROUND THE PUMP DISCHARGE HOSE WITH A STRAP OR SIMILAR DEVICE.
<br />SEEDING DATES:
<br />SOIL AMENDMENTS:
<br />ground agricultural limestone and 1,000 lb/acre 10-10-10 fertilizer.
<br />2. PLACE FILTER BAG ON SUITABLE BASE (E.G., MULCH, LEAF/WOOD COMPOST, WOODCHIPS, SAND, OR
<br />MOUNTAINS; MAY 15 - AUG. 15
<br />STRAW BALES) LOCATED ON A LEVEL OR 5% MAXIMUM SLOPING SURFACE. DISCHARGE TO A
<br />PIEDMONT; MAY 1 - AUG. 1
<br />FOLLOW SOIL TESTS OR APPLY 2,000 LB /ACRE GROUND AGRICULTURAL
<br />MULCH
<br />STABILIZED AREA. EXTEND BASE A MINIMUM OF 12 INCHES FROM EDGES OF BAG,
<br />COASTAL PLAIN; APR. 1 - AUG. 15
<br />LIMESTONE AND 1,000 LB /ACRE 10 -20 -20 FERTILIZER.
<br />Apply 4,000 lb /acre small grain straw or equivalent Cover of another Suitable
<br />3. CONTROL PUMPING RATE TO PREVENT EXCESSIVE PRESSURE WITHIN THE FILTER BAG IN ACCORDANCE
<br />WITH THE MANUFACTURER RECOMMENDATIONS. AS THE BAG FILLS WITH SEDIMENT, REDUCE PUMPING
<br />mulch. Anchor straw by tacking with asphalt applied at '
<br />RATE.
<br />SOIL AMENDMENTS:
<br />MULCH:
<br />netting, or roving or by crimping with a mulch anchoring tool. A disk with
<br />4. REMOVE AND PROPERLY DISPOSE OF FILTER BAG UPON COMPLETION OF PUMPING OPERATIONS OR
<br />FOLLOW SOIL TESTS OR APPLY 2,000 LB ACRE GROUND AGRICULTURAL
<br />LB/ ACRE
<br />APPLY 4,000 LB ACRE STRAW. ANCHOR STRAW BY TACKING WITH
<br />blades Set nearly straight Can be used as a mulch anchoring tool.
<br />AFTER BAG HAS REACHED CAPACITY, WHICHEVER OCCURS FIRST. SPREAD THE DEWATERED SEDIMENT
<br />FROM THE BAG IN AN APPROVED UPLAND AREA AND STABILIZE WITH SEED AND MULCH BY THE END
<br />LIMESTONE AND 750 LB /ACRE 10 -20 -20 FERTILIZER.
<br />ASPHALT , NETTING, OR A MULCH ANCHORING TOOL.
<br />OF THE WORK DAY. RESTORE THE SURFACE AREA BENEATH THE BAG To ORIGINAL CONDITION UPON
<br />A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH
<br />MAINTENANCE
<br />REMOVAL OF THE DEVICE.
<br />MULCH:
<br />ANCHORING TOOL.
<br />Fertilize according to soil tests or apply 40 lb/ac nitrogen in Jan. or Feb.,
<br />5. USE NONWOVEN GEOTEXTILE WITH DOUBLE STITCHED SEAMS USING HIGH STRENGTH THREAD, SIZE
<br />SLEEVE TO ACCOMMODATE A MAXIMUM 4 INCH DIAMETER PUMP DISCHARGE HOSE. THE BAG MUST BE
<br />APPLY 4,000 LB /ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT
<br />40 lb in Sept., and 40 lb in Nov., from a 12 -4 -8, 16 -4 -8, or similar turf
<br />P
<br />MANUFACTURED FROM A NONWOVEN GEOTEXTILE THAT MEETS OR EXCEEDS MINIMUM AVERAGE ROLL
<br />VALUES (MAIN) FOR THE FOLLOWING:
<br />, NETTING, OR A MULCH ANCHORING TOOL. A DISK WITH
<br />MAINTENANCE:
<br />fertilizer. Avoid fertilizer applications during warm weather, as this increases
<br />BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL.
<br />REPAIR AND REFERTILIZE DAMAGED AREAS IMMEDIATELY. TOPDRESS WITH
<br />stand losses to disease. Mow to a height of 2.5 -3.5 inches as needed.
<br />GRAB TENSILE 250 LB ASTM D -4632
<br />PUNCTURE 150 LB ASTM D -4833
<br />50 LB ACRE OF NITROGEN IN MARCH. IF IT IS NECESSARY TO EXTEND
<br />Reseed, fertilize, and mulch damaged areas immedeately.
<br />FLOW RATE 70 CAL/MIN,/FT= ASTM D -4491
<br />-' -1
<br />MAINTENANCE:
<br />TEMPORARY COVER BEYOND JUNE 15, OVERSEED WITH 50 LB /ACRE KOBE
<br />PERMITTIVITY (sec 1.2 SI=C ASTM D -4491
<br />UV RESISTANCE 70% STRENGTH 0 500 HOURS ASTM D -4355
<br />REFERTILIZE IF GROWTH IS NOT FULLY ADEQUATE. RESEED, REFERTILIZE AND
<br />(PIEDMONT AND COASTAL PLAIN) OR KOREAN (MOUNTAINS) LESPEDEZA IN
<br />APPARENT OPENING SIZE (ACS) 0.15 -0.18 MM ASTM D -4751
<br />MULCH IMMEDIATELY FOLLOWING EROSION OR OTHER DAMAGE.
<br />LATE FEBRUARY OR EARLY MARCH.
<br />SEAM STRENGTH 90i6 ASTM D -4632
<br />8. REPLACE FILTER BAG IF BAG CLOGS OR HAS RIPS, TEARS, OR PUNCTURES. DURING OPERATION KEEP
<br />11 TEMPORARY SEEDING FOR SUMMER
<br />12 TEMPORARY SEEDING FOR FALL
<br />13 TABLE 6.11 H SEEDING N 0.3 P
<br />CONNECTION BETWEEN PUMP HOSE AND FILTER BAG WATER TIGHT. REPLACE BEDDING IF IT BECOMES
<br />DISPLACED.
<br />C5.1 SCALE: N.T.S. 0000 /NC -SEDMT /SEEDING- TEMPB.DWG
<br />C5.1 SCALE: N.T.S. 0000 /NC -SEDMT /SEEDING- TEMPC.DWG
<br />C5.1 SCALE: N.T.S. 0000 /NC -SEDMT /SEEDING- 3P.DWG
<br />14 FILTER BAG
<br />SCALE: N.T.S. N.T.S.
<br />device: \ \CRZSVR2 \Canon iR4570 PS3 file name: N: \1613 Sportsplex Fieldhouse \Civil \CAD Files Current \1613 Sportsplex Field Houselfiyi��Rlaam6:ENTY/C��T.dwg date /time printed: 9/29/2017 2:34:46 PM
<br />222 cloister court
<br />chapel hill, nc 27514
<br />919.401 .8586
<br />www.cra- ae.com
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<br />no. revisions
<br />17 NCDEQ RESPONSE
<br />TO COMMENTS
<br />8/30/17
<br />NCDEQ RESPONSE
<br />TO COMMENTS
<br />9/01/17
<br />NCDENR REVISION
<br />#3 09/26/17
<br />drawn checked
<br />ETS MLH
<br />EROSION
<br />CONTROL
<br />DETAILS
<br />sheet
<br />C5ml
<br />date project no.
<br />09/11/2017 1613
<br />
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