SW6240705_Plansheet - SCM Detail_20241029

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EXTRA STRENGTH FILTER FABRIC SEDIMENT TUBE INSTALLATION SEDIMENT TUBES - GENERAL NOTES SEDIMENT TUBES - INSPECTION & MAINTENANCE
STEEL POST NEEDED WITHOUT WIRE MESH FABRIC;
(1.25 LB/LIN FT FABRIC HEIGHT, 18" TO 24" RUNOFF 1. THE KEY TO FUNCTIONAL SEDIMENT TUBES IS WEEKLY
STEEL- 5FT MIN STEEL POST 24" MAX. 2"X 2"WOOD STAKES OR 1. SEDIMENT TUBES MAY BE INSTALLED ALONG CONTOURS, IN DRAINAGE
LENGTH) 1.25#/FT STEEL POST CONVEYANCE CHANNELS, AND AROUND INLETS TO HELP PREVENT INSPECTIONS,
DRIPLINE
OFF-SITE DISCHARGE OF SEDIMENT-LADEN STORMWATER RUNOFF. ROUTINE MAINTENANCE, AND REGULAR SEDIMENT REMOVAL.
2. REGULAR INSPECTIONS OF SEDIMENT TUBES SHALL BE
4g„ I /\\ 2. SEDIMENT TUBES ARE ELONGATED TUBES OF COMPACTED GEOTEXTILES, CONDUCTED ONCE
F� L� 24" MIN. II I II I II I II I III= FILTER FABRIC �FN��tiiil,�� I I ��� \�\ MULCH.
EXCELSIOR WOOD, NATURAL COCONUT FIBER, OR HARDWOOD EVERY CALENDAR WEEK AND, AS RECOMMENDED, WITHIN
rT
=I I I I= 7y M /\ 24-HOURS
=I I III=� BACKFILL TRENCH WITH 20'-0" FOR I I I /. STRAW, PINE NEEDLE, AND LEAF MULCH-FILLED SEDIMENT AFTER EACH RAINFALL EVEN THAT PRODUCES 1/2-INCH OR
FLOW I=�' COMPACTED 8 20 DIA. TREE -I \�� TUBES ARE NOT PERMITTED. MORE OF
�- DOWN-4" FORWARD
STANDARD DETAIL �� .PRECIPITATION
3. THE OUTER NETTING OF THE SEDIMENT TUBE SHOULD CONSIST OF D
TRENCH WITH NATIVE BACKFILL SEAMLESS, HIGH-DENSITY POLYETHYLENE PHOTODEGRADABLE
8 FT.6 FT. MAX. SPAING WITH CING WITHOUT IRE WIREORT FENCE.SUPPORT FENCE. MATERIALS
ULTRAVIOLET STABILIZERS OR A SEAMLESS HIGH-DENSITY 3 SEDIMENTATTENTION TO SEDIMENT ACCUMULATIONS IN FRONT OF THE
(SINGLE ROW) SF SEDIMENT TUBE SPACING POLYETHYLENE NON-DEGRADABLE MATERIAL. TUBE IS EXTREMELY IMPORTANT. ACCUMULATED SEDIMENT
NOTES: SHOULD BE
1. A MINIMUM 10' MAINTENANCE BUFFER SHALL BE (DOUBLE ROW) X X 4. SEDIMENT TUBES, WHEN USED AS CHECKS WITHIN CHANNELS, SHOULD CONTINUALLY MONITORED AND REMOVED WHEN NECESSARY.
PROVIDED BETWEEN THE LAST ROW OF SILT FENCE MAINTENANCE: PLAN SYMBOL SLOPE MAX. SEDIMENT TUBE SPACING RANGE BETWEEN 18-INCHES AND 24-INCHES DEPENDING ON CHANNEL 4. REMOVE ACCUMULATED SEDIMENT WHEN IT REACHES 1/3 THE
.
AND WATERS OF THE STATE. DIMENSIONS DIAMETERS OUTSIDE THIS RANGE MAY BE ALLOWED
1. INSPECT AND REPAIR FENCE WEEKLY OR AFTER EACH 1/2 LESS THAN 2% 150-FEET HEIGHT
2. SILT FENCE SHALL BE PLACED ON SLOPE CONTOURS IN. STORM EVENT AND REMOVE SEDIMENT WHEN DEPOSITS TREE PROTECTION WHERE NECESSARY WHEN APPROVED. OF THE SEDIMENT TUBE.
TO MAXIMIZE PONDING EFFICIENCY. REACH 1/3 OF FENCE HEIGHT. FENCE 2% 100-FEET
3. SILT FENCE DRAINAGE AREA OF 1/4 ACRE OR LESS PER 2 REMOVED SEDIMENT SHALL BE DEPOSITED TO AN AREA CRITICAL ROOT ZONE 5. CURLED EXCELSIOR WOOD, OR NATURAL COCONUT PRODUCTS THAT ARE 5. REMOVED SEDIMENT SHALL BE PLACED IN STOCKPILE
° 75-FEET ROLLED UP TO CREATE A SEDIMENT TUBE ARE NOT ALLOWED.
4. WIRE MESH REINFORCEMENT SHALL CONSIST OF 14 THAT WILL NOT CONTRIBUTE SEDIMENT OFF-SITE AND CAN 3 STORAGE AREAS OR SPREAD THINLY ACROSS DISTURBED
BE PERMANENTLY STABILIZED. ° AREA. STABILIZE THE REMOVED SEDIMENT AFTER IT IS
GAUGE WIRE WITH 6" SPACING MINIMUM. 3. ANY SECTION OF SILT FENCE WHICH HAS BEEN 4/° 50-FEET 6. SEDIMENT TUBES SHOULD BE STAKED USING WOODEN STAKES (2-INCH RELOCATED.
5. SYNTHETIC FILTER FABRIC MIN. REQUIREMENTS: UNDERMINED OR OVERTOPPED SHALL BE IMMEDIATELY ° X 2-INCH) OR STEEL POSTS (STANDARD "U" OR"T" SECTIONS WITH A
REPLACED
A. TENSILE STRENGTH -90 LBS; 5/° 40-FEET MINIMUM WEIGHT OF 1.25 POUNDS PER FOOT)AT A MINIMUM OF
B. PERMITTIVITY- 0.05 SEC-1; . 6% 48-INCHES IN LENGTH PLACED ON 2-FOOT CENTERS. 6. LARGE DEBRIS, TRASH, AND LEAVES SHOULD BE REMOVED
C. APPARENT OPENING SIZE - 30 US STD. SIEVE; AND, 30-FEET FROM IN
D. ULTRAVIOLET STABILITY- 70% 7. INSTALL ALL SEDIMENT TUBES TO ENSURE THAT NO GAPS EXIST FRONT OF TUBES WHEN FOUND.
1 JILT FENCE GREATER THAN 6% 25-FEET BETWEEN THE SOIL AND THE BOTTOM OF THE TUBE. MANUFACTURER'S
RECOMMENDATIONS SHOULD ALWAYS BE CONSULTED BEFORE 7. IF EROSION CAUSES THE EDGES TO FALL TO A HEIGHT EQUAL
�-02 NTS FLOW TO OR
END SILT FENCE
END FENCE GEOTEXTILE INSTALLATION. BELOW THE HEIGHT OF THE SEDIMENT TUBE, REPAIRS SHOULD
BE MADE
GEOTEXTILE 4k4* 8. THE ENDS OF ADJACENT SEDIMENT TUBES SHOULD BE OVERLAPPED IMMEDIATELY TO PREVENT RUNOFF FROM BYPASSING TUBE.
STAKES PLACED AT 6-INCHES TO PREVENT FLOW AND SEDIMENT FROM PASSING THROUGH
CONSTRUCTION I 2' MINIMUM THE FIELD JOINT. 8. SEDIMENT TUBES SHOULD BE REMOVED AFTER THE
FENCE SPACING CONTRIBUTING C
9. SEDIMENT TUBES SHOULD NOT BE STACKED ON TOP OF ONE ANOTHER, DRAINAGE AREA HAS BEEN COMPLETELY STABILIZED.
UNLESS RECOMMENDED BY MANUFACTURER. PERMANENT
10. EACH SEDIMENT TUBE SHOULD BE INSTALLED IN A TRENCH WITH A VEGETATION SHOULD REPLACE AREAS FROM WHICH SEDIMENT
DEPTH EQUAL TO 1/5 THE DIAMETER OF THE SEDIMENT TUBE. TUBES
I_ 10' - 0" MAX. _I I HAVE BEEN REMOVED.
11. SEDIMENT TUBES SHOULD CONTINUE UP THE SIDE SLOPES A MINIMUM
DRIPLINE (VARIES) I OF 1-FOOT ABOVE THE DESIGN FLOW DEPTH OF THE CHANNEL.
HARDWARE SILT FENCE POST CLOTH FENCE LOCATION I 12. INSTALL STAKES AT A DIAGONAL FACING INCOMING RUNOFF.
WIRE FENC BURY WIRE FENCE, FILTER NOTES: ( LIMITS OF CRITICAL ROOT ZONE )
4" MESH HARDWARE CLOTH FABRIC, AND HARDWARE RADIUS = 1 FT. PER INCH OF TRUNK DIAMETER
CLOTH IN TRENCH 1. INSTALL TREE PROTECTION FENCING FOR MULTIPLE TREE 4 SEDIMENT TUBE
FILTER OF#57 1 CLUSTERS TO LIMITS SHOWN ON PLANS.
WASHED STONE N 5' �-02 NOT TO SCALE
MINIMUM
I � 0�-023 TREE PROTECTION
#57 WASHED STONENOT TO SCALE \
COMPACTED MAINTENANCE:
BACKFILL 1. SAME MAINTNEANCE REQUIRMENTS AS / 1
OUTLINED IN DETAIL 1 ON SHEET OOC-02 I
LETTERS A \ f
MINIMUM OF 5" IN
10' MIN HEIGHT 1/8" DIA \
2 SILT FENCE OUTLET ' CONCRE E' STEEL WIRE
�-02 NTS WASHOUT B
BINDING
STAPLES Y8" WIRE
a a a a a a a a COMBINATION OF VDOT DIA. 4„
6"
CLASS I RIP RAP AND STAPLE 10 MIL PLASTIC
NCDOT NO. 57 STONE (2 PER BALE) LINER EXISTING
MAINTENANCE: } AGGREGATE lk
1. INSPECT AND REPAIR WEEKLY OR AFTER EACH 1/2 INCH 2- STAKE CONCRETE WASHOUT GRADE
STORM EVENT AND REMOVE SEDIMENT. 2' o 2' o (2 PER BALE) SIGN DETAIL
2. REMOVED SEDIMENT BUILD UP WHEN SEDIMENT IS HALF FLOW A A
THE CHECK DAM HIEGHT.
z �
3. SEDIMENT SHALL BE DEPOSITED TO AN AREA THAT WILL w STRAW
OR
NOT CONTRIBUTE SEDIMENT OFF-SITE AND CAN BE WOOD ES NATIVE(OPTIONAL)MATERIAL
METAL STAKESBALE
PERMANENTLY STABILIZED.
5 STONE CHECK DAM NOTES: (2 PER BALE)
�-02 NOT TO SCALE 1. ACTUAL LAYOUT DETERMINED IN FIELD. SECTION A-A
2. INSTALL CONCRETE WASHOUT SIGN (24"X24", MINIMUM)WITHIN 30' OF THE
TEMPORARY CONCRETE WASHOUT FACILITY.
a a a a a a a
Sp• DESIGN CRITERIA: MAINTENANCE: 3. TEMPORARY WASHOUT AREA MUST BE AT LEAST 50' FROM A STORM DRAIN,
1. AGGREGATE SIZE: 2-3" DIAMETER WASHED STONE 1. MONITOR ENTRANCE DAILY TO ADD STONE AS NEEDED TO CREEK BANK OR PERIMETER CONTROL.
2. PAD THICKNESS: 6" MINIMUM ENSURE PROPER FUNCTION. STRAW BALE
3. PAD WIDTH: 12' MINIMUM 2. CLEAN ANY MATERIAL TRACKED ONTO PUBLIC ROW 10 MIL PLASTIC PLAN (TYP) 4. CLEAN OUT CONCRETE WASHOUT AREA WHEN 50% FULL.
4. PAD LENGTH: 50' MINIMUM IMMEDIATELY. LINER
5. PAD LOCATION: LOCATE CONSTRUCTION ENTRANCES AND EXITS TO 3. SCHEDULE ROUTINE SWEEPING AT THE END OF EACH TYPE "ABOVE GRADE" 5. THE KEY TO FUNCTIONAL CONCRETE WASHOUTS IS WEEKLY INSPECTIONS,
LIMIT SEDIMENT FROM LEAVING THE SITE AND TO PROVIDE MAXIMUM WORK DAY. WITH STRAW BALES ROUTINE MAINTENANCE, AND REGULAR CLEAN OUT.
USAGE BY ALL CONSTRUCTION VEHICLES. AVOID STEEP GRADES AND STRAW BALE BARRIER CONCRETE WASHOUT A
GEOTEXTILE FABRIC TO STABILIZE ENTRANCES AT CURVES IN PUBLIC ROADS. 6. SILT FENCE SHALL BE INSTALLED AROUND PERIMETER OF CONCRETE
FOUNDATION (ESPECIALLY IMPORTANT 6. WASHING: IF CONDITIONS AT THE SITE ARE SUCH THAT MOST OF THE WASHOUT AREA EXCEPT FOR THE SIDE UTILIZED FOR ACCESSING THE
WHERE WETNESS IS ANTICIPATED) 0 12 MIN. MUD AND SEDIMENT ARE NOT REMOVED BY VEHICLES TRAVELING WASHOUT.
OVER THE GRAVEL, THE TIRES SHOULD BE WASHED. WASHING
SHOULD BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE 7. A ROCK CONSTRUCTION ENTRANCE MAY BE NECESSARY ALONG ONE SIDE OF
2-3" DIAMETER WASHED STONE, 6" DEEP THAT DRAINS INTO A SEDIMENT TRAP OR OTHER SUITABLE DISPOSAL THE WASHOUT TO PROVIDE VEHICLE ACCESS.
PERSPECTIVE VIEW AREA. A WASH RACK MAY ALSO BE USED TO MAKE WASHING MORE
CONVENIENT AND EFFECTIVE. CONCRETE WASHOUT
r7N""\ CONSTRUCTION ENTRANCE/EXIT 7. CONTRACTOR REQUIRED TO PROVIDE APPROVED MAINTENANCE OF 7
�-02 NTS OC-01
TRAFFIC (MOT)WHEN WORKING WITHIN COUNTY RIGHT OF WAY. O NOT TO SCALE
PROJECT MANAGER J. MURRAY, PE ie�1i111111/11 A -0 %� HarnettSITE DETAILS (1 OF 4)
PROJECT ENGINEER A. MCGREW, PE \��,'Ce••• ( c;�/
COUNTY
HDR Engineering, Inc. of the Carolinas .`y C�•p� -i' r, -
DRAWN BY A. MCGREW, PE ��•" _ NORTH A R O L I N A
_AL ,N;
N.C.B.E.L.S. License Number: F-0116 040,,54 � strong roots a new growth
D 05/2024 ISSUED FOR STORMWATER PERMIT APPLICATION HARN ETT COUNTY
555 Fayetteville Street, Suite 900 c{�.,•,1/ T
Raleigh, NC 27601 C 05/2024 ISSUED FOR BIDDING ��' %>' G{'�c•''�011
919.232.6600 B 01/2023 REVISED BASED ON REVIEWER COMMENTS ��% ;i\\',e`. NORTHWEST CONVENIENCE CENTER 0 1" 2" FILENAME OOC-02.dwg SHEET
A 10/2022 ISSUED FOR PERMITTING SCALE AS SHOWN
1lj,� /2;� OOC-02
ISSUE DATE DESCRIPTION PROJECT NUMBER 10354679 V v
HARNETT COUNTY NORTH CAROLINA