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'"' J•O1�'7 x I EC 1 EROSION CONTROL PLAN MANUEL SITE MAINTENACE SPECIFICATIONS (C❑N'T)i General Notes
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�. j �i� - V . ViI II��) MAINTAIN THE GRAVEL PADTIO IN A CONDITION TO PREVENT MUD OR SEDIMENT FROM
4t�%R:.Y`�� v:Iii I1r �. taw 0 �r -'III II EC 6 GRADING PLAN MANUEL SITE LEAVING THE CONSTRUCTION SITE. THIS MAY REQUIRE PERIODIC TOPDRESSING WITH PERSON!
EST ? _ 0 err U•- �� O�� EC 7 GRADING PLAN WEBSTER SITE 2-INCH STONE. AFTER EACH RAINFALL, INSPECT ANY STRUCTURE USED TO TRAP SEDIMENT
'r=•^ s -' �� . - EC 8 GRADING PLAN WEBSTER SITE AND CLEAN IT OUT AS NECESSARY. IMMEDIATELY REMOVE ALL OBJECTIONABLE
ti- ( B I ' ��- - MATERIALS SPILLED, WASHED, OR TRACKED ONTO PUBLIC ROADWAYS. DANIEL LYNCH
�I 0• EC 9 GRADING PLAN RICHARDSON SITE
P.O. DRAWER BB
E gT�x� �_' '�O Abs. 0.1 ■ , - NCGOI NPDES CONSTRUCTION PERMIT SPECIFICATIONS
f :J Y y, m-�� /� TEMPORARY SEDIMENT TRAP PILOT MOUNTAIN, NC 27104
+•_' � NCGO1 NPDES CONSTRUCTION PERMIT INSPECTION
..k_✓.�� a g �� _ INSPECT TEMPORARY SEDIMENT TRAPS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT
I f _q D .7 O r--L` Zn CONSTRUCTION SPECIFICATIONS (C❑N'T)i OE INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT, AND PHONES [phone] [phone]
VES$-6N, 4.; e � ` Y= 1 r`**+ RESTORE THE TRAP TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED
�MA'1311 p _ �ja '0` N TO ONE-HALF THE DESIGN DEPTH OF THE TRAP AND REMOVE SEDIMENT AND RESTORE THE
�`02 O:• .� �`•�- •Z o BASIN TO ITS ORIGINAL DIMENSIONS WHEN SEDIMENT ACCUMULATES TO ONE-HALF THE
v _ ]-` 3 ,.'�� TEMPORARY DIVERSION HEIGHT OF THE FIRST BAFFLE. PLACE THE SEDIMENT THAT IS REMOVED IN THE
m ,�� 4� !��#V� :44 O *m DESIGNATED DISPOSAL AREA, AND REPLACE THE PART OF THE GRAVEL FACING THAT IS
,� .`..0:1 �����j'rf� pi a_ 1. REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS, AND OTHER OBJECTIONABLE IMPAIRE➢ BY SEDIMENT.
It +y �,`��„ r�� � .��NJ� y�fy� MATERIAL.
2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION MEETS ALL DESIGN REQUIREMENTS. CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE
$ J �. 3. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE DESIGN ELEVATION DEPTH OF THE SPILLWAY TO ENSURE IT IS A MINIMUM OF 1.5 FEET BELOW THE LOW
pREo%E `�t�� r A PLUS THE SPECIFIED SETTLEMENT. POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT TO
of IIIC !` flit N 4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE REGRADING AND CLEANOUT. SLIGHTLY ABOVE DESIGN GRADE. ANY RIPRAP DISPLACED FROM THE SPILLWAY MUST BE
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5. VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION, UNLESS IT WILL REMAIN IN PLACE LESS REPLACED IMMEDIATELY.
RI THAN 30 WORKING DAY
` I. V AFTER ALL SEDIMENT-PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE
`h' ���� I.�� w� r^ SKIMMER THE STRUCTURE AND ALL UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND WITH THE
'� ADJOINING AREAS, AND STABILIZE PROPERLY
gl) 1. SHAPE THE BASIN TO THE SPECIFIED DIMENSIONS, PREVENT THE SKIMMING DEVICE FROM SETTLING
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PNI r p e
I� 1 INTO THE MUD BY EXCAVATING A SHALLOW PIT UNDER THE SKIMMER OR PROVIDING A LOW SUPPORT SKIMMER
111 �,N!�; � IR I'Z �. i 6 2. PLACE THE BARREL (TYPICALLY 4-INCH SCHEDULE 40 PVC PIPE) ON A FIRM, SMOOTH FOUNDATION INSPECT SKIMMER SEDIMENT TRAP AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT
,,��• dl < ` . OF IMPERVIOUS SOIL. DO NOT USE PERVIOUS MATERIAL SUCH AS SAND, GRAVEL, OR CRUSHED STONE (ONE-HALF INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. PULL THE
�0: O ^ r �`. AS BACKFILL AROUND THE PIPE. PLACE THE FILL MATERIAL AROUND THE PIPE SPILLWAY IN 4-INCH SKIMMER TO ONE SIDE SO THAT THE SEDIMENT UNDERNEATH IT CAN BE EXCAVATED.
��5' Z� ` ` �O+ �� LAYERS AND COMPACT IT UNDER AND AROUND THE PIPE TO AT LEAST THE SAME DENSITY AS THE EXCAVATE THE SEDIMENT FROM THE ENTIRE BASIN, NOT JUST AROUND THE SKIMMER OR
•(`t` ��� V �.��-�� ADJACENT EMBANKMENT. CARE MUST BE TAKEN NOT TO RAISE THE PIPE FROM THE FIRM CONTACT WITH THE FIRST CELL. MAKE SURE VEGETATION GROWING IN THE BOTTOM OF THE BASIN DOES
P `�� in ITS FOUNDATION WHEN COMPACTING UNDER THE PIPE HAUNCHES. PLACE A MINIMUM DEPTH OF 2 FEET NOT HOLD DOWN THE SKIMMER.
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OF NSTRUCTION
EQUIPMENT.TIN NO ED CCASELSHOULD TE PPE CONDIT BE INSTAL OVER THE PIPE SPILLWAY BEFORE LEDSBY CUTING A ING IT WITH OTRENCH THROUGH THE
7DAM AFTER THE EMBANKMENT IS COMPLETE.
y5. ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURERS INSTRUCTIONS, OR AS DESIGNED. JERINGSON THE ROPE WILL AKE THE SKIMMER BOB UP AND DOWN AND DISLODGE THELY
r6. LAY THE ASSEMBLED SKIMMER ON THE BOTTOM OF THE BASIN WITH THE FLEXIBLE JOINT AT THE DEBRIS AND RESTORE FLOW. IF THIS DOES NOT WORK, PULL THE SKIMMER OVER TO THE
ZINLET OF THE BARREL PIPE. ATTACH THE FLEXIBLE JOINT TO THE BARREL PIPE AND POSITION THE SIDE OF THE BASIN AND REMOVE THE DEBRIS. ALSO CHECK THE ORIFICE INSIDE THE
SKIMMER OVER 7HE EXCAVATED PIT OR SUPPORT. BE SURE TO ATTACH A ROPE TO THE SKIMMER AND SKIMMER TO SEE IF IT IS CLOGGED; IF SO REMOVE THE DEBRIS.
"f' ANCHOR IT TO THE SIDE OF THE BASIN. THIS WILL BE USED TO PULL THE SKIMMER TO THE SIDE FOR
MAINTENANCE. IF THE SKIMMER ARM OR BARREL PIPE IS CLOGGED, THE ORIFICE CAN BE REMOVED AND
e s 1♦1k - N �� THE OBSTRUCTION CLEARED WITH A PLUMBERS SNAKE OR BY FLUSHING WITH WATER. BE
�, �`T OR 1�, ?krr: 2 a444 TEMPORARY SEEDING AND PFRMANFNT SEEDING SURE AND REPLACE THE ORIFICE BEFORE REPOSITIONING THE SKIMMER.
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SII:: o� �� Fir COMPLETE GRADING BEFORE PREPARING SEEDBEDS, AND INSTALL ALL NECESSARY EROSION CONTROL CHECK THE FABRIC LINED SPILLWAY FOR DAMAGE AND MAKE ANY REQUIRED REPAIRS WITH
_.MOVERtRn_ •
. . -` n�:,.., b PRACTICES SUCH AS, DIKES, WATERWAYS, AND BASINS. MINIMIZE STEEP SLOPES BECAUSE THEY MAKE FABRIC THAT SPANS THE FULL WIDTH OF THE SPILLWAY. CHECK THE EMBANKMENT,
SEEDBED PREPARATION DIFFICULT AND INCREASE THE EROSION HAZARD. IF SOILS BECOME COMPACTED SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, AND INSPECT THE EMBANKMENT FOR
V IC IN ITY M A P DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8 INCHES USING A RIPPER, HARROW, OR CHISEL PIPING AND SETTLEMENT. MAKE ALL NECESSARY REPAIRS IMMEDIATELY. REMOVE ALL TRASH
PLOW. AND OTHER DEBRIS FROM THE SKIMMER AND POOL AREAS REMOVE ALL TRASH AND OTHER
SEEDBED PREPARATIONS DEBRIS FROM THE SKIMMER AND POOL AREAS.
FREEZING WEATHER CAN RESULT IN ICE FORMING IN THE BASIN. SOME SPECIAL
1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVER ADVERSE SOIL PRECAUTIONS SHOULD BE TAKEN IN THE WINTER TO PREVENT THE SKIMMER FROM
CONDITIONS, IF AVAILABLE. PLUGGING WITH ICE.
CONSTRUCTION SPECIFICATIONS: 2. RIP THE 3. REMOVE ALL IL RE E TOA DEEP.SIX INCHES LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING SURFACE REASONABLY SMOOTH
AND UNIFORM. POROUS BAFFLES
4. APPLY AGRICULTURAL LIME, FERTILIZER AND SUPERPHOSPHATE UNIFORMLY AND MIX WITH SOIL (SEE
SEDIMENT TRAP MIXTURE).
5. CONTINUE TILLAGE UNTIL A WELL-PULVERIZED, FIRM REASONABLY UNIFORM SEEDBED IS PREPARED INSPECT BAFFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY
1. CLEAR, GRUB, AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL VEGETATION AND ROOT MAT. REMOVE ALL SURFACE FOUR TO SIX INCHES DEEP. REQUIRED REPAIRS IMMEDIATELY. REPAIR THE BAFFLES IF THEY ARE DAMAGED. RE-ANCHOR
SOIL CONTAINING HIGH AMOUNTS OF ORGANIC MATTER, AND STOCKPILE OR DISPOSE OF IT PROPERLY. HAUL ALL OBJECTIONABLE 6. SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR THE BAFFLES IF WATER IS FLOWING UNDERNEATH OR AROUND THEM.
MATERIAL TO THE DESIGNATED DISPOSAL AREA. CULTIPACK AFTER SEEDING.
2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE OF ROOTS, WOODY VEGETATION, ORGANIC MATTER, AND OTHER 7. MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. BE SURE TO MAINTAIN ACCESS TO THE BAFFLES. SHOULD THE FABRIC OF A BAFFLE
OBJECTIONABLE MATERIAL. PLACE THE FILL IN LIFTS NOT TO EXCEED 9 INCHES, AND MACHINE COMPACT IT. OVER FILL THE 8. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WITHIN THE PLANTING COLLAPSE, TEAR, DECOMPOSE, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY. REMOVE
EMBANKMENT 6 INCHES TO ALLOW FOR SETTLEMENT. SEASON, IF POSSIBLE. IF STAND SHOULD BE OVER 60% DAMAGED, RE-ESTABLISH FOLLOWING THE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL, TO PROVIDE ADEQUATE STORAGE
3.FROM CONSTRUCT
IPINGTBYHE USING OUTLET IL FILTERTION IN THE FABRIC OR A EMBANKMENT.
CUTOFF TRENCH BETWEENCONNECTION
THE RIPRAP STRUCTURE AAND AND
SOIL THE SOIL ORIGINAL 9. CONSULT(NRCS EON(MAINTENANCE TREATMENT AND SEEDING
TREATMENT AND FERTILIZATION AFTER PERMANENT COVER IS AVOID DAMAGING THE BAFFLES DURING CLEANOUT,PRESSURE
REPLACE IF DAMAGEDTAKE CARE TO ,,CN CA/12
• PLACE THE FILTER FABRIC BETWEEN THE RIPRAP AND THE SOIL. EXTEND THE FABRIC ACROSS THE SPILLWAY ESTABLISHED. DURING CLEANOUT OPERATIONS. SEDIMENT DEPTH SHOULD NEVER EXCEED HALF THE 3� IQy y7
FOUNDATION AND SIDES TO THE TOP OF THE DAM; OR MIXTURE DESIGNED STORAGE DEPTH. `�
• EXCAVATE A KEYWAY TRENCH ALONG THE CENTER LINE OF THE SPILLWAY FOUNDATION EXTENDING UP THE SIDES TO THE • AGRICULTURAL LIMESTONE, 2 TONS/ACRE (1 TON/ACRE IN SANDY SOILS) SEAL
HEIGHT OF THE DAM. THE TRENCH SHOULD BE AT LEAST 2 FEET DEEP AND 2 FEET WIDE WITH LI SIDE SLOPES. • FERTILIZER, 1,000 LBS/ACRE - 10-10-10 (300 LBS/AC FOR CENTIPEDE GRASS) TEMPORARY SEEDING � ,,
4. CLEAR THE POND AREA BELOW THE ELEVATION OF THE CREST OF THE SPILLWAY TO FACILITATE SEDIMENT CLEANOUT. • MULCH 2 TONS/ACRE - GRAIN STRAW (DO NOT MULCH CENTIPEDE GRASS) , .1,� 1? �C
5. ALL CUT AND FILL SLOPES SHOULD BE 24 OR FLATTER. • ANCHOR, ASPHALT EMULSION AT 300 GALS/ACRE, NETTING, OR CRIMPING RESEED AND MULCH AREAS WHERE SEEDLING EMERGENCE IS POOR, OR WHERE EROSION t
6. ENSURE THAT THE STONE (DRAINAGE) SECTION OF THE EMBANKMENT HAS A MINIMUM BOTTOM WIDTH OF 3 FEET AND MAXIMUM OCCURS, AS SOON AS POSSIBLE. DO NOT MOW. PROTECT FROM TRAFFIC AS MUCH AS cy4E1.R V•
SIDE SLOPES OF LI THAT EXTEND TO THE BOTTOM OF THE SPILLWAY SECTION. PERMANENT SEEDING SCHEDULE POSSIBLE.
7. CONSTRUCT THE MINIMUM FINISHED STONE SPILLWAY BOTTOM WIDTH, AS SHOWN ON THE PLANS, WITH 21 SIDE SLOPES (/715 z•z3
EXTENDING TO THE TOP OF THE OVER FILLED EMBANKMENT. KEEP THE THICKNESS OF THE SIDES OF THE SPILLWAY OUTLET DATE TYPE PLANTING RATE PERMANENT SEEDING
STRUCTURE AT A MINIMUM OF 21 INCHES. THE WEIR MUST BE LEVEL AND CONSTRUCTED TO GRADE TO ASSURE DESIGN FEB 15 - MARCH 20 FESCUE 80 LBS/ACRE
CAPACITY. SEPT 1 - SEPT 30 PENSACOLA BAHIA GRASS 50 LBS/ACRE SEEDED AREAS SHALL BE INSPECTED FOR FAILURE AND NECESSARY REPAIRS SHALL BE
8. MATERIAL USED IN THE STONE SECTION SHOULD BE A WELL-GRADED MIXTURE OF STONE WITH A D50 SIZE OF 9 INCHES SERICEA LESPEDEZA 30 LBS/ACRE MADE WITHIN THE SAME SEASON, IF POSSIBLE. INITIAL MOWING SHALL BE SCHEDULED
(CLASS B EROSION CONTROL STONE IS RECOMMENDED) AND A MAXIMUM STONE SIZE OF 14 INCHES. THE STONE MAY BE MACHINE KOBE LESPEDEZA 10 LBS/ACRE ONCE THE VEGETATION HAS REACHED 4-INCH HEIGHT AND MUST BE ACCOMPLISHED BEFORE
PLACED AND THE SMALLER STONES WORKED INTO THE VOIDS OF THE LARGER STONES. THE STONE SHOULD BE HARD, ANGULAR, MAR - JUNE CENTIPEDE GRASS 20 LBS/ACRE THE VEGETATION REACHES 6-INCHES TO PREVENT OVERSHADING AND BREAKOVER,
AND HIGHLY WEATHER-RESISTANT.
9. DISCHARGE INLET WATER INTO THE BASIN IN A MANNER TO PREVENT EROSION. USE TEMPORARY SLOPE DRAINS OR TEMPORARY SEEDING SCHEDULE AFTER THE INITIAL MOWING, INSPECT SEEDED AREAS FOR FAILURE OR MARGINAL SEED No- RevisioNlssue Date
DIVERSIONS WITH OUTLET PROTECTION TO DIVERT SEDIMENT-LADEN WATER TO THE UPPER END OF THE POOL AREA TO DATE TYPE PLANTING RATE TAKE AND MAKE NECESSARY REPAIRS, SOIL AMENDMENTS, AND RESEED.
IMPROVE BASIN TRAP EFFICIENCY
10. ENSURE THAT THE STONE SPILLWAY OUTLET SECTION EXTENDS DOWNSTREAM PAST THE TOE OF THE EMBANKMENT UNTIL DEC 1 - APRIL 15 RYE (GRAIN) 120 LBS/ACRE CONSTRUCTION SEQUENCE!_
STABLE CONDITIONS ARE REACHED AND OUTLET VELOCITY IS ACCEPTABLE FOR THE RECEIVING STREAM. KEEP THE EDGES OF KOBE LESPEDEZA 50 LBS/ACRE rm Name a.Address
THE STONE OUTLET SECTION FLUSH WITH THE SURROUNDING GROUND AND SHAPE THE CENTER TO CONFINE THE OUTFLOW APRIL 15 - AUG 15 GERMAN MILLET 40 LBS/ACRE [IMMYRLYNCH&SCNS, INC
STREAM. AUG 15 - DEC 30 RYE (GRAIN) 120 LBS/ACRE L NOTIFY THE STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL11. DIRECT EMERGENCY BYPASS TO NATURAL, STABLE AREAS. LOCATE BYPASS OUTLETS SO THAT FLOW WILL NOT DAMAGE THE RESOURCES AT [phone] OF CONSTRUCTION COMENCEMENT 14 SOUfHEMBANKMENT. CONSULT NRCS FOR ADDITIONAL INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF12. STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE THE SEDIMENT POOL AND DOWNSTREAM FROM THE TRAP DENUDED AREAS. THE ABOVE VEGETATION RATES ARE THOSE WHICH DO WELL UNDER LOCAL 2. INSTALL CONSTRUCTION ENTRANCE AND SILT FENCES AS SHOWN ON THE APPROVED PLAN. O q WpR BB
IMMEDIATELY AFTER CONSTRUCTION. CONDITIONS; OTHER SEEDING RATE COMBINATIONS ARE POSSIBLE. LIMIT GRUBBING AND GROUD DISTURANCE TO ONLY WHAT IS REQUIRED TO INSTALL
13. SHOW THE DISTANCE FROM THE TOP OF THE SPILLWAY TO THE SE➢IMENT CLEANOUT LEVEL (1/2 THE DESIGN DEPTH) ON THESE DEVICES ILOT MOUNTAIN,NC 27104
THE PLANS AND MARK IT IN THE FIELD. ■xx TEMPORARY SEEDING, RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT 3. GRADE AS REQUIRED AND INSTALL CLEAN WATER PERIMETER TEMPORARY DIVERSIONS TO
14. INSTALL POROUS BAFFLES AS SPECIFIED. VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12' IN HEIGHT BEFORE MOWING, CONTROL OFFSITE DRAINAGE FLOW ONTO SITE,STABILIZE AND SEED,
OTHERWISE FESCUE MAY BE SHADED OUT.
POROUS BAFFLES 4. CONSTRUCT TEMPORARY SEDIMENT TRAP WITH SLOPE DRAIN AND STABILIZE EMBANKMENT
SLOPES. REMOVE SLOPE DRAIN ONCE SLOPE IS STABLIZED,
1. GRADE THE BASIN SO THAT THE BOTTOM IS LEVEL FRONT TO BACK AND SIDE TO SIDE. 5. CONSTRUCT GRASS LINED STALE AS SHOWN ON THE PLANS.
2. INSTALL THE COIR FIBER BAFFLES IMMEDIATELY UPON EXCAVATION OF THE BASINS. 3. INSTALL POSTS ACROSS THE WIDTH MAINTENACE SPECIFICATIONS: 6. CONSTRUCT ONSITE TEMPORARY DIVERSIONS,STABAILIZE AND SEED.
OF THE SEDIMENT TRAP (PRACTICE 6.62, SEDIMENT FENCE), 7. AREAS TO BE LEFT DORMANT FOR LONGER THAN 14 CALENDARS DAYS AND GRADED SLOPES Prgac'Name araa Amress
44. STEEL POSTS SHOULD BE THIVFN TO A DEPTH OF 24 INCHES OF 6 AND SPACED A MAXIMUM OF OF 2.1 GRADE OR STEEPER SHALL BE TEMPORARILY STABILIZED WITHIN 7 DAYS.THEE NVERTROF THE
E S ILLWAY.ETOPSROF BAFFLES SHOULD IBEMA MINIMUM INCHES
2[INC ES BLOWER THAN THE TOP OF THE SILT (SEDIMENT) FENCE 8• FERTILIZE, SEED, AND MULCH ALL DISTURBED AREAS ACCORDING TO SEEDING SCHEDULE ROCKI NG HAM COUNTY
EARTHEN EMBANKMENT. INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED 9. WHEN CONSTRUCTION OF ALL EROSION CONTROL MEASURES IS COMPLETE AND ALL AREAS S HIL O H AIRPORT
P. INSTALL AT LEAST THREE ROWS IOFN LENGTHNGHS MAYYTWEEN THE INLETLS AND OUTLET DISCHARGE REPAIRS IMMEDIATELY. SHOULD THE FABRIC OF ANY SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR ARE WELL STABILIZED,CALL FOR AN INSPECTION BY AN ENVIRONMENTAL INSPECTOR.
POINT. BASINS LESS THAN 20 FEETTENSION IN USE 2 BAFFLES. I M P ROVE M E NT S
ATTACH A 9 GAUGE HIGH V WIRE STRAND S THE STEEL POSTS AT A HEIGHO OF 6 BECOME REMOVE SEDIMENT DEPOSITS ASCE (T NECESSARYY. 10.TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE NEXT ACCOMPLIISHEDS FOR
FIR L DI DISTNT URBED AREAS WITHIN 14NT TO WORKINGS DAYS OR EROSION
90 CALENDAR EXCESS SOIL OFFSITE
INCHES ABOVE AS THE SPILLWAY ELEVATION WITH PLASTIC TIES OR WIRE FASTENERS E ERPREVENTDEPTH,
, THESAGGING. IF THE TEMPORARY RAIN AND TO REDUCE PRESSURE ON THE FENCE. TAKE CARE TO AVOID UNDERMINING THE FENCE
SEDIMENTBASIN WILL BE CONVERTED TO A PERMANENT ATTEMPORAR BASIN OF A GREATER DEPTH, THE BAFFLE HEIGHT DURING CLEANOUT. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING DAYS (WHICHEVER IS SHORTER) FOLLOWING THE COMPLETIONUT E VE ALL ACCUMULATED
SHOULD. BASED ON THE IM POOL DEPTH DURINGIUSE A A TEMPORARY OF BASINEOR SIA. THE AREA TO GRADE AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN 11. UPON STALIZATION OF PLACED EXCESS SOIL,GRADE OUT DR REMOVE ALL ACCUMULATED
7. EXTEND 9 GAUGE MINIMUM HIGH TENSION WIRE STRAND TO SIDE OF BASIN OR INSTALL SEDIMENT PRIOR TO REMOVING TEMPORARY SEDIMENT TRAP,
PROPERLY STABILIZED.
STEEL T-POSTS TO ANCHOR BAFFLE TO SIDE OF BASIN AND SECURE TO VERTICAL END POSTS AS SHOWN 12 OBTAIN APPROVAL OF LAND QUALITY SECTION PRIOR TO REMOVAL OF TEMPORARY
8. DRAPE THE COIR FIBER MAT OVER THE WIRE STRAND MOUNTED AT A HEIGHT OF 6 INCHES STONE DRAINS SEDIMENT BASIN.
ABOVE THE SPILLWAY ELEVATION. SECURE THE COIR FIBER MAT TO THE WIRE STRAND WITH
PLASTIC TIES OR WIRE FASTENERS. ANCHOR THE MATTING TO THE SIDES AND FLOOR OF THE BASIN WITH 12 INCH WIRE 13. REMOVE ALL EROSION CONTROL MEASURES EXCEPT FOR SILT FENCE AND RESTORE SITE ma<. G'^'
STAPLES, APPROXIMATELY 1 FT APART, ALONG THE BOTTOM AND SIDE SLOPES OF THE BASIN. INSPECT FOR SIGNIFICANT EROSION AROUND THE EDGES AND BETWEEN SLIT FENCE AND DRAIN. TO PRE-CONSTRUCTION SLOPES AND GRADES AND STABILIZE AND PERMANENT SEED ALL
9. DO NOT SPLICE THE FABRIC, BUT USE A CONTINUOUS PIECE ACROSS THE BASIN INSTALL PROTECTIVE RIPRAP LINERS IN PORTIONS OF THE CHANNEL WHERE EROSION OCCURS. DISTURBED AREAS. 1 OF 12
10. ADJUSTMENTS MAY BE REQUIRED IN THE STAPLING REQUIREMENTS TO FIT INDIVIDUAL SITE CONDITIONS REMOVE SEDIMENT ACCUMULATED BEHIND THE DRAINS AS REQUIRED PREVENTING DAMAGE TO SILT Nate
FENCE AND ADJACENT VEGETATION. ADD STONES TO DRAINS AS REQUIRED MAINTAINING DESIGN 14. WHEN VEGETATION HAS BECOME ESTABLISHED, CALL FOR A FINAL SITE INSPECTION BY 11/6/2023
TEMPORARY DIVERSION HEIGHT AND CROSS SECTION. AN ENVIRONMENTAL INSPECTOR.
TEMPORARY DIVERSION 15. OBTAIN CERTIFICATE OF COMPLETION AND REMOVE ANY REMAINING EROSION CONTROL -
1. REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS, AND OTHER OBJECTIONABLE MATERIALS. MEASURES WITHIN 30 DAYS AND RE-GRADE AND SEED OR STABILIZE ANY RESULTING BARE 1••=o•
2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTON MEETS ALL DESIGN REQUIREMENTS. AREAS.
3. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE DESIGN ELEVATION PLUS THE SPECIFIED INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL. IMMEDIATELY REMOVE \ \ /
SETTLEMENT. SEDIMENT FROM THE FLOW AREA AND REPAIR THE DIVERSION RIDGE. CAREFULLY CHECK OUTLETS AND \ �
4. PROVIDE SUFFICIENT FROM AROUND THE DIVERSIONS TO PERMIT MACHINE REGRADING AND CLEANOUT. MAKE TIMELY REPAIRS AS NEEDED. WHEN THE AREA PROTECTED IS PERMANENTLY STABILIZED, REMOVE
5. VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION, ULESS IT WILL REMAIN IN PLACE LESS THAN 30 WORKING DAYS THE RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL GROUND LEVEL AND APPROPRIATELY
STABILIZE IT.