SW5220102_Plansheet - Misc. Detail_20220428 (5)

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DOZER TR
CLEAT IMF
TO TH IE= SI
SHOULD BE SEEDED AND STABILEZED
IMMEDIATELY.
D3.16 SLOPE TRACKING
NOT TO SCALE
(T
1
1
D3.17 SOIL STOCKPILE
NOT TO SCALE
PROPOSED GAP IN SILT FENCE
T HIGH POINT TO ALLOW FOR
CCESS
SOIL STOCKPILE TO BE COVERED WITH A
TARP OR TEMPORARY GROUND COVER
PER NPDES REQUIREMENT
1. 5'
12" OF NCDOT #5
OR #57
WASHED STONE
CLASS B RIPRAP
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NOTE: MAXIMUM
100' SPACING
FILTER FABRIC
7 24" MAX.
BETWEEN CHECK
DAMS
EXCEPT ON
AT CENTER
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ROADS GREATER
THAN
10% GRADE IN
WHICH CASE MAXIMUM
SPACING OF 50'
1 4'
TO 6'
BETWEEN CHECK
DAMS
IS REQUIRED
A
B
L
SECTION
A —A
STONE CHECK DAM:
STONE SHOULD BE PLACED
OVER THE
CHANNEL BANKS TO KEEP WATER FROM
CUTTING AROUND THE DAM.
L = THE DISTANCE SUCH THAT POINTS
A AND B ARE OF EQUAL ELEVATION
THE FOLLOWING CRITERIA SHOULD BE USED WHEN DESIGNING A CHECK DAM:
— ENSURE THAT THE DRAINAGE AREA ABOVE THE CHECK DAM DOES NOT
EXCEED 0.5 ACRES.
— KEEP THE MAXIMUM HEIGHT AT 2 FT AT THE CENTER OF THE DAM.
— KEEP THE CENTER OF THE CHECK DAM AT LEAST 9 INCHES LOWER THAN
THE OUTER EDGES AT NATURAL GROUND ELEVATION.
— KEEP THE SIDE SLOPES OF THE DAM AT 2:1 OR FLATTER. FILTER
— ENSURE THAT THE MAXIMUM SPACING BETWEEN DAMS PLACES THE TOE
OF THE UPSTREAM DAM AT THE SAME ELEVATION AS THE TOP OF THE
DOWNSTREAM DAM.
— STABILIZE OVERFLOW AREAS ALONG THE CHANNEL TO RESIST EROSION
CAUSED BY CHECK DAMS.
— USE NCDOT CLASS B STONE AND LINE THE UPSTREAM SIDE OF THE
DAM WITH NCDOT #5 OR #57 STONE.
— KEY THE STONE INTO THE DITCH BANKS AND EXTEND IT BEYOND THE ABUTMENTS A
MINIMUM OF 1.5 FEET TO AVOID WASHOUTS FROM OVERFLOW AROUND THE DAM.
D3.14 STONE CHECK DAM
NOT TO SCALE
TOP VIEW
= SEWN IN NECK
DIRTBAG
3
OPENING
ACCOMODATES UP
TO 4' DISCHARGE
LENGTH HOSE
NOTES:
1) DIRTBAG TO BE PLACED ON AGGREGATE OR STRAW
2) SEAMS MUST BE HIGH STRENGTH DOUBLE STITCHED 'J' SEAMS
3) SEAM MUST BE TESTED UNDER ASTM D-4884, ACF TEST RESULTS AVAILABLE UPON REQUEST
4) THIS WORK SHALL CONSIST OF FURNISHING, PLACING AND REMOVAL OF ASSOCIATED DEVICE
5) CONTRACTOR IS REQUIRED TO USE A DIRTBAG DB-55 OR APPROVED EQUIVELENT
6) FLOATING INTAKE LOCATED IN THE SKIMMER CELL WILL BE USED
CROSS SECTION
T
DB55 FABRIC PROPERTIES
PROPERTY TEST METHOD MARV
TENSILE STRENGTH ASTM D-4632 205 LBS
ELONGATION ASTM D-4632 50%
CBR PUNCTURE ASTM D-6241 525 LBS
UV RESISTANCE ASTM D-4355 707
ADS ASTM D-4751 80 US SIEVE
PERMITTIVITY I ASTM D-4491 1.4 SEC-1
—d
FLOW RATE I ASTM D-4491 90 GPM/SF
CORPORA7E OFFICE
2631 CARDWELL ROAD
ACF DB55 DIRTBAG
RICHMOND, VA 23234
PH: U-448-3636
FOR ADDITIONAL N➢RNAIILN PLEASE CINTACI ACF ENVIRPNNLNTAL
1R i:T r MWWWWACFENVMMENTALUM
PH: 8W-448-3636 / WWW,ACFENWIRDNMENTALCNM
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1. INSPECT DEWATERING BAG ONCE A WEEK AND AFTER EVERY
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SIGNIFICANT RAINFALL. CONTRACTOR TO INSPECT DEWATERING BAG FOR
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COMPLIANCE WITH PLANS AND DETAILS; INCLUDING SEDIMENT
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ACCUMULATION BEYOND DETAIL ALLOWANCE, AND ALSO DAMAGE OR
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3. WHEN DEWATERING BAGS ARE FOUND TO BE DAMAGED, CONTRACTOR TO
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COMPLIANCE WITH PLANS AND DETAILS.
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4. IF DEWATERING BAGS ARE FOUND TO BE INSUFFICIENT, CONTRACTOR TO
INSTALL ADDITIONAL MEASURES AS NEEDED TO ENSURE SEDIMENT
REMAINS CONTROLLED ONSITE AS REQUIRED.
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5. CONTRACTOR TO REMOVE DEWATERING BAGS AND BRING AREA TO
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GRADE ONCE CONFORMATION OF SITE STABILIZATION HAS BEEN
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REQUESTED AND RECEIVED FROM PROJECT ENGINEER.
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9" MIN. MIN
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FABRIC
A
FACE VIEW
FLOATING INTAKE
PUMP \DEWATERING BAG
DEWATERING BAG WITH
FLOATING INTAKE
EROSION CONTROL
DETAILS
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DRAWN BY: SAK
CDC PROJECT NO.: 12139
XXX PERMIT NO. xxx
SHEET
C934