The sand filter has to be moved from this location' The embankment cross section used in the slope s

1
Figure 1
A
A
The sand filter has to be moved from this
location. The embankment cross section used in
the slope stability analysis did not include the
sand filter. Please see comments about sand
filter stability.
Section A-A was a typical cross section used in
the slope stability analysis.
2
Figure 2
6 layers of woven geotextiles
Details
2
Soil-vegetated protection cover on both sides of
the slope and the crest
1
Compacted A-2-6 Soil layers
2- 3 ft Overlap
Woven Geotextile layers (Tensile Strength (at
ultimate) ASTM D 4595 lt 250 lbs/ft
27 ft
3
Figure 3
6 layers of woven geotextile
2 to 3 ft Overlap.
1 ft
6 in lift of SC or A-2-6 compacted soil (95)
Standard Proctor ASTM D698
1 ft
1 ft
1 ft
1 ft
1 ft
1 ft
9 ft
2 to 3 ft Overlap. If the full length can be
Covered, there is no Need for overlap
Embankment Key
4
Figure 4
Embankment - Retaining Wall Section
Retaining Wall
Extend the mat by 6 in to partly cover the wall
2 ft
Embankment
6 in Overlap
Slope of at least 2 to 3
Slope of at least 2 to 3

• Use Mirafi HS1715 or equivalent erosion
  protection layer on the top of the
• upstream, crest and downstream of the embankment
• 11 Gauge, 6 (15.24 cm) x 1 x 6 (15.24 cm)
  metal staples to fasten the mat
• Use 6 in overlap
• Fasten every 3 to 5. On the overlap staple
  every 1
• Seed and fertilizer may be spread before or after
  mat installation

5
Wall
4 to 6 in slanted soil
Soil Lift
6

• Embankment Construction and Selection of
  Materials
• Fill slopes shall not be steeper than
  two-horizontal to one-vertical (2h1v).
• The ground surface shall be prepared to receive
  fill by removing vegetation, non-complying fill,
  topsoil, and other unsuitable materials.
• Pond embankments shall be constructed on suitable
  native consolidated soil (or adequately compacted
  and stable fill soils)
• The embankment soils shall have the following
  minimum/maximum soil characteristics per the
  United States Department of Agricultures
  Textural Triangle a minimum of 30 clay, a
  maximum of 60 sand, a maximum of 60 silt, with
  nominal gravel and cobble content. Or use A-2-6
  soil according to AASHTO soil classification
  system.
• The embankment soil shall be free of loose
  surface soil materials, roots and other organic
  debris.
• No rock or similar irreducible material with a
  maximum dimension greater than 6 inches (6")
  shall be buried or placed in fills.
• The Geotechnical Engineer shall properly devises
  a method of placement and continuously inspects
  its placement and approves the fill stability
• All embankment layers shall be adequately
  compacted in 6 lifts to achieve 95 of maximum
  dry density (use pneumatic rubber-tired). Field
  compaction must be inspected to insure the
  achievement of the 95. Inspection should be done
  every 45 to 50.
• Use hand vibratory compactor to compact the soil
  lifts for a distance close to the retaining wall
  (0 to 6 ft from the wall)
• See section of the embankment-retaining wall
  section for more details. The wall needs to be
  design accordingly.
• The embankment shall be placed approximately 10
  higher than required by the design to account for
  the long term settlement of the fill material
• Exposed earth on the side slopes and bottom
  should be seeded with the appropriate seed
  mixture as soon as is practicable.