• Maintaining roads during reclamation including grading, surfacing, ditches and culverts.
• Maintaining ponds. • Evaluating and rehabilitating structures to be retained as part of the post-
mining land use ponds, roads, diversions, etc. There is no established method of estimating costs for most of these
activities; therefore a case-by-case basis calculation by using professional judgment is needed.
2.1.2. Indirect Cost Component
This cost is non-technical fund, which proposed to support the realization of reclamation planning.
2.1.2.1. Mobilization and Demobilization of Heavy Equipments
Mobilization and Demobilization mob-demob of heavy equipments is an allowance for the cost of moving equipment, to and from the reclamation site. The
cost will be varied depend on such condition: • the type and number of equipment,
• the haul distance to the site, • the needing for special equipment;
• the presence of non standard features or condition, • the remote location
• a necessity of separate mob-demob at a later one.
Generally the cost is range up to 10 of the total direct costs in accordance with its constraint that should be recognized, and normally is
determined 2.5 of direct cost.
2.1.2.2. Reclamation Planning
The cost of reclamation planning is addressed to engineering redesign cost, in the event of bond forfeiture; due to the plans in the permit application may be
not reflect site conditions at the time of bond. Necessary activities may include: • Preparing maps and plans to show the extent of required reclamation.
• Surveying topsoil and overburden stockpiles to determine the amount of material available.
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• Analyzing topsoil and overburden stockpiles to determine whether special handling is necessary.
• Evaluating structures to assess the difficulty of demolition and removal. • Evaluating impoundments and roads to determine any special reclamation
needs such as the presence of toxic materials, the feasibility of leaving those structures in place, and the reclamation needed to ensure stability
and facilitate the post mining landuse.
• Assessing the condition of area reclaimed by the permitee to determine whether additional work is needed to complete the reclamation plan.
• Preparing contract documents.
Figure 2.1 The relationship of reclamation planning cost and Direct Cost
Based on the manual chart of “Englemen’s Heavy Construction Cost File” on Handbook for Calculation of Reclamation Bond Amounts - OSM US
Department of the Interior, 2000, the cost of reclamation plan generally allocate in between 2.5-6.0 of direct cost, whilst DEMR has been determined in
between 2-10 as shown on Figure 2.1. The following formula is derived from this chart.
Y = exp13.8155105579643-1.15129254649702X ; or LNY=13.8155105579643-1.15129254649702X .............................. 8
Y : Direct Cost
X : Percentage of Reclamation Planning cost
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2.1.2.3. Administration Cost and Contractor Profit
