Walpole-Nornalup National Park - Department of Environment and ...

6. Investigate more effective rehabilitation techniques.
7. Monitor, evaluate and record progress of rehabilitation techniques used.
8. Ensure gravel pits are rehabilitated immediately after use.
9. Liaise with other agencies experienced in coastal rehabilitation.
14.0 RAW MATERIAL EXTRACTION
BACKGROUND
Gravel, limestone, sand and rock aggregate are needed for road construction and maintenance, and
recreation site developments. Most supplies of these materials have been obtained from within the
Park in the past, although existing quarries are close to the end of their working lives. Limited
amounts of these resources occur in the Park, and the deposits are probably not feasible to quarry
because of the size of the deposit, lack of accessibility, location of deposit within an area with scenic
qualities and their proximity to special plants. It is preferred that materials are obtained from outside
the Park or from areas that are already disturbed or are of lower conservation value. However,
transportation of raw materials from outside the Park significantly increases the cost of the
operations.
ISSUES
• Raw material extraction and movement can be a major source of dieback disease and it is,
therefore, important that hygiene procedures are used.
• All roads in the Park require maintenance over the next 10 years. The continuing redevelopment
and maintenance of roads will become an increasing financial burden for Park management.
• Bitumenising some roads will reduce the requirement for resurfacing, but will change the
character of areas that now have gravel roads. While initial bitumen construction costs will be
higher than gravel, in the long-term they may be more economical.
OBJECTIVES
• Obtain raw materials for construction works from outside the Park.
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