HomeMy WebLinkAboutpg2CONSTRUCToN SPECIFICATIONS
1. Clear the area of all debris that might hinder excavation and
disposal of spoil.
2. Grade shallow depression uniformly towards the inlet with side
slopes no greater than 21. Grade a 1 -Foot wide level area set 4 inches
below the area adjacent to the inlet
3. Install the Class B or Class I riprap In a circle around the inlet
The minimum crest width of the riprap should be 18 inches, with a
minimum bottom width of 75 feet The minimum height of the stone
is 2 feet
4. The outside face of the riprap is then tined with 12 inches of NC
DOT 95 or N57 washed stone.
MAINITFJNANC'E
Inspect rack doughnut inlet protection at least weekly and after each
significant (1/2 inch or greater) rainfall event and repair immediately.
To provide satisfactory inlet protection efficiency, remove sediment
from the sediment pool area when the volume is decreased by half.
This will help provide adequate storage volume for the next rain
Stabilize excavated material appropriately.
Take care not to damage or undercut the structure during sediment
removal. Remove debris from the inlet and replace stone as needed.
If the inlet was covered with wire mesh the mesh should be cleaned of
debris.
When the contributing drainage area has been adequately stabilized,
remove all materials and dispose of sediment properly. Bring the
disturbed area to the grade of the drop inlet Smooth and compact as
it is needed.
Appropriately stabilize all bare areas around the inlet with ground
cover.
DEWATERING _CONCRETE BLOCK
2:1 SLOPE, GRAVEL FILTER
TEMPORARY SEDIMENT WIRE DEWATERING
POOL \ SCREEN /
1' MIN
2' MAX
SEDIMENT
TYPICAL BLOCK & GRAVEL INLET PROTECTION DETAIL
NTS
p Ru N NT SEEDING SPECIFICATION
1. Al disturbed areas shall be dressed to typical sections and plowed to a depth of 5 inches.
The top 2 inches shall be pulverized to provide uniform seedbed. NOTE: Line should be applied
with necessary equipment to give uniform distribution of these materials. The hand - bucket
method Is not acceptable. Urne and fertilizer should be Incorporated into the soil prior to
2. The following are rates and kinds of these materials to be applied PER ACRE:
KM
Abruzzi Rye RATES
Pensacola Bahiogross SD lbs.
Kentucky 31 Fescue 50 lbs.
Korean Lespedezo 15 lbs.
Cent]pedegruss 50 Ibis
Common Bermudegrow 25 Ib&
10-20-20 Fertilizer 500 Ib&
Agricultural Limestone 4000 lb&
3. Seeded area shell be witipacked to firm seedbed and to cover need
4. Grain straw shall be applied over seeded areas as mulch. No bore ground shall be visible
in the mulched area if proper applications is orhleved. Thick dumps of straw are not
permissible on uniform covwroge is expected. Straws shall be applied at a minimum of 4000
5. The mulched area shall be tacked with liquid asphalt sufficient too M1ald straw in place
where directed by Engineer.
6. Ditch treatment shall be used n areas where steep grades could cwse ditch erosion. Use
of jute mesh, excelsior matting, or fiberglass roving is acceptable. ditch treatment should be
installed before mulching operation.
7. Builder la to provide a perinarnint ground coves sufficient to restrain erosion an such
exposed areas within 15 working days or 90 calendar days. whchew Is Shorter, after
completion of construction or development
Approved Toil Fescue Cultivate:
Anthem Adventure Adventure II Amigo
Austin Apache Apache It Arid
Chapel Hill Brookstone Bonanza Bonanza II
Crossfire II Chesapeake Chieftain Coronado
Falcon Debutante Duster Falcon
Geri Finelown Petite Finelawn Finelown I
Jaguar Grande Guardian Houndog
Jaguar 111 Kentucky 31 Kitty Hawk
Pacer Montauk Mustang Olympic
Rebel Phoenix Pixie Pyramid
Safari Rebel Jr. Rebel 11 Renegade
Tomahawk Shenandoah Tempo Titan
Walfpock Trailblazer Tribute Vegas
Wrangler
Fertilizer shall be 10 -20 -20 andysis. Upon written approval of the Engineer, a different
analysis of fertilizer may be used provided the 1 -2 -2 ratio is maintained and the rate of
application adjusted to provide the same amount of plant food as a 10 -20 -20 analysis.
(AS RE9urir -n1
i
ii
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TEMPORARY EXCAVATED DROP INLET PROTECTION
NM
1 sox
16"
DROP INLET
WITH GRATE
CONSTRUCTION SPECIFICATIONS
i. Clear the entrance and exit area of all vegetation, roots, and other
objectionable material and properly grade it.
2. Place the gravel to the specific grade and dimensions shown on the
plans, and smooth it.
3. Provide drainage to carry water to a sediment trap or other suitable
outlet.
4. Use geotextile fabrics because they improve stability of the foundation
In locations subject to seepage or high water table.
MAINTENANCE
Maintain the gravel pad in a 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.
zo��
GRAVEL ?TRANCE SHALL BE 50 FEET
IN LENGTH AND 20 FEET IN WIDTH
WITH 20 FOOT RADIUS AT EXISTING
ROADWAY
36' -0' MIN 4' -0" 10' -0'
FILTER FABRIC -3' WASHED STONE
GRAVEL CONSTRUCTION ENTRANCE
►.•..tom_.. _ reg.. . 1
TEMPORARY GRAVEL
CONSTRUCTION ENTRANCE
N.T.S.
FFRTI 17FRI TOPDRFSS1N0
Fertilizer used far topdressing an all roadway areas except slopes 21 and steeper shall be 10 -20 -20
written approval of the Engineer, a different analysis of fertilizer may be used provided grade and shall be
applied at the rote of 500 pounds per acre (560kg per hectare). Upon the 1 -2 -2 ratio is maintained
and the rate of application adjusted to provide the same amount of plant food as 10 -20-20 analysis.
Fertilizer used for topdressing on dopes 2:1 and steeper and waste and borrow areas shall be 16 -8-8
grade and shall be opp0ed of the rate of 500 pounds per acre (560 kg per hectare). Upon written
approve] of the Engineer, o different analysis of fertilizer may be used provided the 2 -1 -1 ratio is
maintoiwd and the rate of application adjusted to provide the some amount of plant food as 16 -8-8
analysis.
Crimping Straw Mulch:
Crimping will be required an these project adjacent to any section of roadway where traffic is to be
maintained or allowed during construction. In areas within six feet (2 meters) of the edge of pavement,
straw is to be crimped and the immediately tacked with asphalt todc
Crimping of straw in lieu of asphalt lack will be allowed on this project subject to the following conditions:
All areas seeded and mulched shall be crimped and /or tacked with asphalt os directed by the Engineer.
Crimping will be limited to slopes 4:1 or flatter unless the Contractor can demonstrate to the Engineer
that the steeper dopes can be negotiated without altering the typical section.
Straw mulch to be of sufficient length and qudlty to withstand the crimping operation and provide
adequate ground cover.
Crimping equipment induding power source shu! be subject to the approval of the Engineer providing that
maximum spacing of crimper blades shall not exceed 8 inches (200 mm).
MAINTENANCE SCHEDULE:
1. All erosion and sediment control practices will be checked far stability and operation
following every storm event, but in no case less than once every week. Any repass or clearing
necessary to maintain erosion and sediment control practices shall be completed immediately.
2. All seeded areas will be refertilized, reseeded as necessary, and mulched according to the
The kinds of seed and fertilizer, and the rates of application of seed, ferllizer. and limestone,
shall be as stated below. During periods of overtopping dales, the kind of seed to be used
shall be determined by the Engineer. All rates per acre (kilograms per hectare.)
Mach 1 - August 31 September 1 - February 28
50# (55kg) Toll Feswe 501 (55kg) Toil FEscue
5# (6kg) Centipede 5# (6kg) Centipede
25# (26kg) Bermudagross (hulled) 354 (40kg) Bermudagras ( unhulled)
500# (560kg) Fertilizer 500# (550kg) Fartlizer
4000# (4500kg) Limestone 4000# (4500kg) Limestone
Slopes 2:1 and Steeper and Waste and Borrow Locations:
March 1 - August 31 September 1 - February 28
75# (85kg) Tall Fescue 75# (85kg) Toll Fescue
25# (28kg) Bennudogross (hulled) 35# (40kg) Bermudagras (unhulled)
500# (560kg) Fertilizer 5D0# (560kg) Fertilizer
4000# (4500kg) Limestone 4000# (4501)kg) Limestone
Ex1AVATED AREA AS REQUIRED
Du
TEMPORARY EXCAVATED INLET PROTECTION
NrS
CONSTRUCTION SPECIFICATIONS
1. Clear eve am of all inD,le toot nsgit h'aww ss iwi and disposal of .,.a.
2. Glade the aplx u to the inlet %indem y.
3. Prolsot weep holes by Va,wl.
4. When the awerewu.s 4rs•ev .nor hox ease pw.n .wAN •taerired, Anal
ws•p hales. air Ina ba•i, with staNe soil W final gr.*q newness. wrt,•.:t a
,wepsdy, ed •iaxes,
MAINTENANCE
l,wpor. awn, Aad waasar nantal- uw rwawhtl epee an•. soy .ton . .....
e,e wneibutiy drainep area inn been permmmil, ekb4zed. To P,•^de s a,•' tho " raa,c•d Yialr Sps spaod excel mvaoN natinial .vent vow the our
rw N arid meu car ehockpAs aid sf.es6• N appr.pnaboy.
NOARE R n
Eh sor smpr
,rvoN,a Nee Grad To RE Chrvla
OPTIONAL
GABION INLET PROTECTION BOX
(PATENT BY AUTRY GRADING CO.)
IASi SAVED:6 /28/2011 11:05 AM LAST PLOTTED:B /8/2012 9:03 AM PLOTTED BY; Ron Williams FILENAME: G: \CURRENT JOBS \WEAVER FRANK \10 - 1224 -01 1Ht SUMMIT - StCIIUN tUUR \YIANS \uLlwu \MASTER- DETAILS.DWG
PIPE OUTLET TO FLAT AREA -
NO WELL- DEFINED CHANNEL
ewr�
rrveeaeawvw -: air L. 73 .
• a• al
PIPE OUTLET TO WELL- DEFINED
CHANNEL
12" min. of NCDOT #5
or #57 washed stone
3600 CU. FT /ACRE
Design settled
top
5' f
max. /
2' to 3.5' fill FILTER FABRIC
ry'
tDJLT
I. Ed is the length of the riprap apron.
... D =1.5 times the maximum stone
diameter but not leas than 6'.
�. In a well- defined channel extend the
apron up the channel banks to on
elevation of 6' above the maximum
tailwater depth of to the tap of the
bank. whichever Is less.
4. A filter blanket or filter fabric should
be installed between the riprap and
soil foundation.
k ANSTRUCTION SPECIFICATIONS
I. Ensure that the subgrode for the filter and riprap follows the required tin"
and grades shown In the plan. Compact any fill required in the subgrode to the
density of the surrounding undisturbed material. Low areas in the subgrode an
undisturbed soil may dw be filled by increasing the riprap thickness.
The riprap and grovel alter must conform to the specified grading limits
shown an the plan&
I- Filter cloth, when used, must meet design requirements and be properly
protected from punching or tearing during installation. Repair any damage by
removing the riprap and placing another piece of filter Goth over the damaged
area. All connecting pints should overlap so the top layer is above the
downstream layer a minimum of 1 foot. If the damage is extensive, replace
the entire filter cloth.
4. Riprap may be placed by equipment, but take care to ovoid damaging the
filter.
.,. The minimum thickness of the riprap should be 1.5 tunes the maximum
stone diameter.
r. Riprap may be field stone or rough quarry stone. It should be hard,
angular, highly weather - resistant and well graded.
). Construct the apron on zero grade with no overfill at the end. Make the
tap of the r'nprop at the downstream end level with the receiving area or slightly
below it.
n. Ensure that the apron is properly aligned with the receiving stream
and preferably straight throughout its length. If a curve is needed to fit site
conditions, place it in the upper section of the apron.
a. Immediately after construction, stabilize all disturbed areas with vegetation
(Practices 6.10, T rw.V . ,. P and 6.11, #Lw...w,d
MAINTENANCE
wspect riprap outlet structures weekly and after significant (J inch or greater)
,ainfoll events to see if any erosion around or below the riprop has taken place,
.a if stares have been dislodged. Immediately make all needed repairs to
prevent further damage.
RIP -RAP OUTLET PRO H CTION
NTS
•1���A
-.MWwmrm isave 1�'•1�
CROSS SECTION
NTS
4' MIN.
3' MIN.
STONE SECTION
NTS
5 MAX.
nLTE P FABRIC
OVERFILL 6" FOR
SETTLEMENT
1.5'
_ W�X2:1 SIDE .Sf.OPE MAX
I'
EXIST. GRADE
1:1 SIDE SLOPE MAX
CLASS B RIP RAP
TEMPORARY SEDIMENT TRAP
CONSTRUCTION SPECIFICATIONS
1. Clear, grub and strip the area under the embankment of all vegetation and mot mat. Remove all surface soil containing
high amounts of organic matter, and stockpile or dispose of it properly. Haul all objectionable material to the designated
disposal area.
2. Ensure that fill material for the embankment is free of roots, woody 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 to,
settlement
3. Construct the outlet section in the embankment Protect the connection between the riprap and the soil from piping l,y
using filter fabric or a keyway cutoff trench between the riprap structure and soil.
.Place the filter fabric between the riprap and the soil. Extend the fabric across the spillway foundation and sides to the to(, of
the dam; or
• Excavate a keyway trench along the centerline of the spillway foundation extending up the sides to the height of the dam 'Itae
trench should be at least 2 feet deep and 2 feet wide with 1:1 side slopes.
4. Clear the pond area below the elevation of the crest of the spillway to facilitate sediment cleanout
5. AR wt and fill slopes should be 2:1 or Batter.
6. Ensure that the stone (drainage) section of the embankment has a minimum bottom width of 3 feet and maximum sidn
slopes of 1:1 that extend to the bottom of the spillway section.
7. Construct the minimum finished stone spillway bottom width, as shown on the plans, with 2:1 side slopes extending h, the
top of the over filled embankment Keep the thickness of the sides of the spillway outlet structure at a minimum of 21 inches
The weir must be level and constructed to grade to assure design capability.
8. Material used in the stone section should be a well -graded mixture of stone with a d50 size of 9 inches (class B erosion,
Control stone is recommended) and a maximum stone size of 14 inches. The stone may be machine placed and the smaller shores
worked into the voids of the larger stones. The stone should be hard, angular and highly weather - resistant.
9. Discharge inlet water into the basin in a manner to prevent erosion. Use temporary slope drains or diversions with onllet
protection to divert sediment -laden water to the upper end of the pool area to improve basins trap efficiency ( References: RNnoff
Control Measures and Outlet Protection).
10. Ensure that the stone spillway outlet section extends downstream past the toe of the embankment until stable conditw,is
are reached and outlet velocity is acceptable for the receiving stream. Keep the edges of the stone outlet section Bush with it,,
surrounding ground, and shape the center to confine the outflow stream (References: Surface Stabilization) .
11. Direct emergency bypass to natural, stable areas. Locate bypass outlets so that Bow will not damage the embankment
12. Stabilize the embankment and all disturbed areas above the sediment pool and downstream from the trap immediately
after construction (References: Sui*e Stabilization) .
13. Slaw the distance from the top of the spillway to the sediment cicanout level (1/2 the design depth) on the plans and nark
it in the field.
14. Install porous baffles as specified in Practice 6.65, Porous Baffles.
MAINTENANCE
Inspect temporary sediment traps at least weekly and after each significant (1/2 inch or greater) rainfall event and repair
immediately. Remove sediment, and restore the trap to its original dimensions when the sediment has accumulated to one -half
the design depth of the trap. Place the sediment that is removed in the designated disposal area, and replace the part of the
gravel facing that is impaired by sediment.
Check the structure for damage from erosion or piping. Periodically check the depth of the spillway to ensure it is a random a•'Of
15 feet below the low point of the embankment Immediately fill any settlement of the embankment to slightly above design
grade. Any riprap displaced from the spillway most be replaced immediately.
After all sediment - producing areas have been permanently stabilized, remove the structure and all unstable sediment. SmI
the area to blend with the adjoining areas, and stabilize properly. (References: Surface Stabilization)
TEMPORARY SEDIMENT TRAP
N.T.S.
BY -PASS
6' BELOW
SETTLED TOP
OF DAM
Winter and Early Spring
SEEDING KXTIRE
SPENES RATE (, u /Adds)
Rye (grain) 1?p
Annual lespedezo (kobe In
Piedmont and Coastal Plain,
Korean in Mountains) 50
Omit annual lespedezo when duraton of temporary cover is
not to extend beyond .lane.
SEEDING DATES
Mountains- -Above 2500 ft. Feb. 15 -May 15
Below 2500 ft. Feb. 1 -May 1
Piedmont- -Jan. 1 -May 1
Coastal Plain- -Dec. 1 -Apr. 15
SOIL AMENMENTs
Follow recommendations of soft tests or apply 2,000 lb. /acre
ground agriculture limestone and 750 Ib. /acre 10 -10-10 fertilizer.
Maw
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.
TNUORARY SEEDING RECOMMMATIONS (b)
Bummer
SUNK FYXn.RE
SnaES RATE (I u. /ACRE)
German millet 40
In the Piedmont and Mountains, a small- stemmed Sudangrass may
by substituted at a rate of 50 Ib. /acre.
SEEDING DATES
Mountoina- -May 15 -Aug. 15
Piedmont- -May 1 -Aug. 15
Coastal Plain- -Apr. 15 -Aug. 15
SOIL AMENMENTS
Follow recommendations of sod tests or apply 2,000 lb. /acre
ground agriculture limestone and 750 lb. /acre 10 -10 -10 fertilizer.
Maw
Apply 4,000 lb./acre straw. Anchor straw by locking 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.
8' max. standard strength fabric
with wire fence 6' max. extra
the trench 7
PLAN VIEW
NTS
Plastic vela BackfII trench
or wire fence er and compact
ties fabric thoroughly
Steel Natural
Dos „_mound
TEMPORARY SMING
(c)
Fall
SEEDING MIxTME
RATE (LB. /ACNE)
Rye (groin) 120
SUNK DATES
Mountains--Aug. 15 -Dec. 15
Coastal Plain and piedmont - -Aug. 15 -Dec. 30
SOIL AMENDMENTS
Follow soil tests or apply 2.000 lb./acre ground agricultural
limestone and 1,000 lb./acre 10 -10-10 fertilizer.
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 con be used as o mulch anchoring tool.
MAINTENANCE
Repair and refertilize damaged areas immediately. Topdrew 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 (Piedmont and Costal Plain) or kmeon (Mountains) lespedzo
in late February or early March.
the Slicing Method
Figure 6.62b
Drive over each side of silt
fence 2 to 4 times with
device exerting 60 p.s.i. or
greater
Ponding height
max. 24" POST SPACING:
Attach fabric 6' max. on open runs
to upstream
side of post 4' max. on pooling areas
FLOW
STEEL POST DEPTH:
2 feet
No more than 24"
of a 36" fabric
is allowed above ground.
_2eration
CROSS- SECTION VIEW
NTS Honzon a
(Figure 6.62a Installation detail of a sediment fence.) chisel poln
(3" width)
SEDIMENTFENCE
NTS
MATERIALS
1. Use a synthetic f!lter fabric of at least 95% by weight of polyolefins or
polyester, which is certified by the manufacturer or supplier as conforming to
the requirements in ASTM D 6461, which is shown in part in Table 6.62b
(Refer to the Erosion and Sediment Control Planning and Design Manual,
Chapter 6, Section 62.2).
Synthetic filter fabric should contain ultraviolet ray inhibitors and stabilizers
to provide a minimum of 6 months of expected usable construction Ice at a
temperature range of 0 to 120' F.
2. Ensure that posts for sediment fences are 1.331bdine,ar ft steel with
a minimum length of 5 feet. Make sure that steel posts have projectrorls to
facilitate fastening the fabric.
3. For reinforcement of standard strength filter fabric, use wire fence with a
minimum 14 gauge and a maximum mesh spacing of 6 inches.
CONSTRUCTION
1. Construct the sediment barrier of standard strength or extra strerlulh
synthetic filter fabrics.
2. Ensure that the height of the sediment fence does rat exceed 24 aches
above the ground surface. (Higher fences may impound volumes of water
sufficient to cause failure of the structure.)
3. Construct the filter fabric from a continuous roll cut to the length of the
barrier to avoid joints. When joints are necessary, securely fasten the fitter
cloth only at a support post with 4 feet minimum overlap to the next post.
4. Support standard strength filter fabric by wire mesh fastened securely to
the upslope side of the posts. Extend the wire mesh support to the bottom of
the trench. Fasten the wire reinforcement, then fabric on the upslope side of
the fence post. Wire or plastic zip ties should have minimum 50 pound tensile
strength
5. When a wire mesh support fence is used, space posts a maximum of 8 feet
apart _ Support posts should be driven securely into the ground a minimum of
24 inches.
6. Extra strength filter fabric with 6 feet post spacing does rat require wire
mesh support fence. Securely fasten the filter fabric directly to posts Wire or
plastic zip ties should have minimum 50 pound tensile strength.
7. Excavate a trench approximately 4 inches wide and 8 inches deep along
the proposed line of posts and upslope from the bamer (Figure 6.52.)
8. Place 12 inches of the fabric along the bottom and side of the tre,G -h.
9. Backfill the trench with soil placed over the fitter fabric and comps, 4_
Thorough compaction of the backf!II is critical to sift fence performari r,
10. Do not attach filter fabric to existing trees
_ Top of Fabric
Belt
1op
i
III I
w
ATTACHMENT DETAILS:
Gather fabric at posts,
if needed.
Utilize three ties per post,
all within top 8" of fabric.
. Position each tie diagonally,
puncturing holes vertically
a minimum of l' apart.
Hang each tie on a post nipple
and tighten securely.
Use cable ties (50lbs) or soft wire.
Roll of
RSW / CCB
gmiill Silt fence
Post
installed
REVIEWED-
Silt after
Fabric
Fence compaction
above
Q ground
AUGUST 2012
8.
Z
Completed
Slicing blade
Installation
Zi57° width)
LLJ
J
Vibratory plow is not acceptable because
of Horizontal compaction
O
SEDIMENT FENCE INSTALLATION USING THE SLICING METHOD
Instead of excavationg a trench, placing fabric and then backfilling trench,
sediment fence mayh be installed using specially designed equipment that
inserts the fabric into a cut sliced in the ground with a disc (Figure 6.62b).
INSTALLATION SPECIFICATIONS
1. The base of both end posts should be at least one foot higher than the
middle of the fence. Check with a level if necessary.
2. Install posts 4 feet apart in critical areas and 6 feet apart on standard
applications.
3. Install posts 2 feet deep on the downstream side of the sift fence, and
as close as possible to the fabric, enabling posts to support the fabric from
upstream water pressure.
4. Install posts with the nipples facing away from the sift fabric.
5. Attach the fabric to each post with three ties, all spaced within the top 8
inches of the fabric. Attach each tie diagonally 45 degrees through the fabric,
with each puncture at least 1 inch vertically apart. Also, each tie should be
positioned to hang on a post nipple when tightened to prevent sagging.
6. Wrap approximately 6 inches of fabric around the end posts and secure
with 3 ties.
7. No more than 24 inches of a 36 inch fabric is allowed above ground
level.
8. The installation should be checked and corrected far any deviations before
compaction.
9. Compaction is vitally important for effective results. Compact the soft
immediately next to the silt fence fabric with the front wheel of the tractor,
skid steer, or roller exerting at least 60 pounds per square inch. Compact the
upstream side first, and then each side twice for a total of 4 trips.
MAINTENANCE
Inspect sediment fences at least once a week and after each rainfall. Make any
required repairs immediately.
Should the fabric of a sediment fence collapse, tear, decompose or become
ineffective, replace ft promptly.
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 cleanDut
Remove all fencing materials and unstable sediment deposits and bring the
area to grade and stabilize it after the contributing drainage area has been
properly stabilized.
DRAWN BY:
RSW / CCB
CHECKED:
JMK, JR.
REVIEWED-
JMK JR.
DATE:
AUGUST 2012
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