wa-a2013021-Sheets-F.pdf
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- WA SKAGIT 40076(1), Hard Creek Bridge Repairs
- Solicitation number
- DTFH70-15-B-00011
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Sheets F
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PLAN QUANTITIES
EROSION CONTROL
SEDIMENTATION AND
F.1
STATE PROJECT
NUMBER
SHEET
U
S S u r ft
D c m y fi le s p w p r o d u c ti o n d w a a d a .d g n
WA SKAGIT 40076(1)
A
M
M a y
C
C o n r a d
C h e c k e d b y
D e s ig n e d b y
10301030
EROSION CONTROL PLANS
SEDIMENTATION AND
Elev 1,024.52
E 20,011.54
N 10328.44
11+75
WA SKAGIT 40076(1)
Elev 1,031.25
E 19,795.50
N 10,517.71
8+84
WA SKAGIT 40076(1)
N
F.2
STATE PROJECT
NUMBER
SHEET
U
S S u r ft
D m y fi le s p w p r o d u c ti o n d w a a d b .d g n
WA SKAGIT 40076(1)
A
J u ly
C o n r
C h e c k e d b y
D e s ig n e d b y
END PROJECT
BEGIN PROJECT
NOTE
Flow arrow
Temporary turf establishment
Fiber roll checkdams
Silt fence
LEGEND
See sheet F.3 for details
Silt fence
Clearing limit
Clearing limit ordinary high water (OHW)
Limits of
See sheets F.4 for details
Fiber roll checkdams
See sheets F.4 for details
Fiber roll checkdams
Clearing limit
Temporary turf establishment Temporary turf establishment Temporary turf establishment
Temporary turf establishment
Temporary turf establishment
See Note 1
CO for approval prior to work.
meets the requirements of permit NWS - 2015 - 482 to
Submit diversion plan according to Section 157 and that1.
8' maximum
FLOW
Max. reach = 500'
SLOPE SLOPE
ponding area Storm water
END STAKE
SILT FENCE - PLAN VIEW
NOTE:
Staple or tie
POSTS AT JOINTS
Panel B
Panel A
END POSTS DETAIL
Geotextile fabric
Steel or wood post
Staple or tie
NO SCALE
SILT FENCE DETAILS
POST AND GEOTEXTILE SILT FENCE - AT TOE OF FILL
2.
1.
Fasten fabric to posts around each post one full turn.
Fold geotextile fabric
Top of posts tied together
Posts driven tightly together.
Steel or wood posts.
18" min. into ground posts driven
54" min. fence
Toe of fill slope infiltration
Storm water
Toe of slope
Silt fence
4' minimum
6" min. fabric entrenchment m in m in m a x
Undisturbed ground
6" with excavated material fabric and backfilled
Line trench with filter m in m a x
Vari es
[1]moving laterally along silt fence prevent storm water from
Sandbag barriers used to
FOOTNOTE:
Not measured for payment[1]
F.3
STATE PROJECT
NUMBER
SHEET
U
S C u s to m a r m y fi le s p w p r o d u c ti o n d w a a d c .d g n
WA SKAGIT 40076(1)
P
J u ly
C o n r
C h e c k e d b y
D e s ig n e d b y
Geotextile
Geotextile the fence.
sediment deposits then grade and seed prior to removal of accumulates to one-third the original height. Remove the ends. Remove sediment from behind the fence when it silt fence upgrade to prevent water from running around the
Install silt fence along ground contours. Curve ends of does not slide down, supporting posts.
All types must ensure silt fence remains attached to, and manufacturer's recommendations for installation procedures.
as long as specified dimensions are satisfied. Follow
Alternate pre-assembled silt fence options will be allowed
PLAN
Direction of runoff Fi ll slo pe
Flow direction
INSTALLATION BEYOND TOE OF SLOPE
disturbed areas
Runoff from as specified in plans
T o e o f fi ll s lo p e
3' min.
3' min. or
Existing ground
Flow
PLAN
INSTALLATION ALONG DITCH
NOTE:
Flow
PROFILE
CROSS SECTION
GRADE
DITCH
(FT)
Flow
Flow Line
CROSS SECTION
STAKING DETAIL
max.
SPACING (S)
SPACING*
ALONG DITCH
NO SCALE
above top of wattle.
Expose stakes 2" min.
2' max. between stakes
6" min. 6" min.
penetration (typ.)
1'-6" min.
Flowline
A B
Space check dams the same elevation
"A" and "B" are the distance apart where points between stakes 4' max.
Wooden stake (typ.)
" 4 3" x 4 flow around the ends
Curve ends upstream to prevent
4.
3.
2.
1.
7%
5%
4%
3%
2%
1% uphhill side of fiber roll
Place excavated material on
12" Ø min. fiber roll.
* Spacing calculated based on
Fiber roll
DETAILS
FIBER ROLL
Fiber roll
Fiber roll and close cut ends or substitue biobags.
For narrow ditches either cut fiber rolls to fit ditch width and at maximum space as shown.
Do not crush fiber roll while staking. Drive stakes at each end
Install check dams in ditches perpendicular to the flowline.
Repair all rills or gullies prior to installation.
F.4
STATE PROJECT
NUMBER
SHEET
U
S C u s to m a r m y fi le s p w p r o d u c ti o n d w a a d e .d g n
WA SKAGIT 40076(1)
P
M a y
C o n r
C h e c k e d b y
D e s ig n e d b
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