Environmental Assessment
Volume C-6
Slurry Pipeline
Reclamation and Closure
Ambatovy Project
210
January 2006
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All construction equipment that arrives on the job site will be in good
working order with no oil or hydraulic fluid leaks.
6.3.1
Timber Salvage
Any merchantable timber will be cut and salvaged from the RoW and other sites,
as directed by local and regional authorities.
6.3.2
Grubbing and Stripping
Right-of-way grubbing and stripping of remaining surficial material is conducted
once clearing is completed. Grubbing and stripping will be completed on the
road RoW to prepare the ground for ditching, grading and/or road fill. The
impact mitigation methods to be followed are described below.
•
All grubbing and stripping material will be stockpiled and stored within
the RoW boundaries for reclamation or disposal.
•
In some areas of the slurry pipeline RoW, roll back will be used for soil
stabilization and erosion control, as specified.
•
Grubbing and stripping will be avoided when possible on sensitive areas
such as stream banks, riparian zones and deep organic sections.
•
Stripping depths will be identified and documented to guide salvage and
subsequent soil replacement.
•
Stripped material will be stored at the edge of the RoW for future
reclamation. Natural vegetation will be allowed to establish on the
stockpiled material to inhibit erosion.
6.3.3
Soil Stability and Erosion Control
The primary mitigation for soil and terrain effects is to minimize the amount and
extent of surface disturbance at any one time. To mitigate potential soil erosion
from occurring during construction, soil exposure will be minimized, particularly
during wet weather and close to watercourses. During very wet weather work
will be limited to prevent excessive wheel rutting and tracking mud on the road.
The following mitigation techniques will be used during construction in areas of
potential soil instability and erosion concerns:
•
Areas of concern, such as riparian areas, will be cleared by hand to
prevent potential disturbance to vegetation and soils by heavy
equipment.
