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LOCAL IMPACTS
Votorantim Cimentos commited to implement a decomissioning plan in 80% of its mines by 2012. By 2010, 24% of its plants had decomissioning plan.
The most important tool to measure environmental and social impacts is the Environmental and Social Impact Assessment (ESIA, or Environmental Impact Assessment and Social). This tool consists of a set of guidelines developed by independent consultants, governmental agencies, financial institutions and NGOs, among other stakeholders of the cement industry, under the coordination of the WBCSD (World Business Council for Sustainable Development), targeted to meet environmental concerns and social in quarries and cement plants, to identify critical points in each phase and direct in their assessment and management.
CSI member companies also assumed the individual commitment to draw up specific rehabilitation plans for their active mines (decommissioning plans). These plans are to be announced to local stakeholders and be regularly revised and updated. To this end, CSI established a set of ESIA-based directives that foresee information on the various stages of a unit's operations, in some cases extending from the construction of the facilities up to the moment of closure.
Commitments individually assumed by CSI companies...
- Follow ESIA orientations and develop tools to integrate them with the decision-making process.
- Draft rehabilitation plans for active mines and the areas in which the facilities operate and present these plans to stakeholders by 2006.
... And the results obtained by Votorantim Cimentos
- Assessment of the directives by a work group pertaining to the Technical Directory, charged with the mission of studying the best way to implement them. Click here for the performance indicators;
- VC aims to develop decommissioning plans for 80 percent of its mines and factories by 2012, and these will cover the aspects of environmental rehabilitation and stakeholder relations. Click here for more details on these plans.
Measuring progress
In this session, the Votorantim Cimentos´s progress is measured by CSI indicators.
Local Impacts KPI´s in 2010:
- 24% of quarries with decommissioning plans
- 61% of plants containing stakeholder engagement plans.
Engagement Plans correspond to the activities undertaken by the cement plants directed on the stakeholders' development, more specifically with local communities to the enterprise.
Biodiversity indicators:
Previously, the biodiversity indicator was measured by only one indicator: "Number of active sites where biodiversity issues are addressed". However, in order to obtain more information on biodiversity in the mines, this indicator was divided into two new indicators
- Number of quarries contained or adjacent of biodiversity high value area (defined by GRI EN11)
- % of quarries classified considered by the previous KPI that have a biodiversity plan
Currently, a tool for calculating these indicators is being developed and the data will be reported in 2012.
Check out the Assurance Letter of the external audit conducted by PriceWaterhouseCoopers.
Mine decommissioning
Votorantim's St. Marys cement plant in Charlevoix, Michigan (USA) drew up a rehabilitation plan for its mines, which will be implemented after the unit's closure—expected to occur in eighty years' time. The plan is required by local legislation and its prime objective is to rehabilitate the region once the factory is shut down.
The project at the St. Marys unit aims to protect natural resources by implanting systems to protect against erosion and prevent landslides and rockfalls and water and air pollution. The anti-erosion measures include earth banks, straw bales, and appropriate topsoil covers. The plan also highlights ways in which the infrastructure surrounding the mine can be put to further use, including its buildings, roads, parking lots, installations, and garbage disposal tips.
The discarded rock, for example, so long as it is produced locally, could be covered over with soil suitable for revegetation using native plants. A hydric structure could also be activated if the site's natural drainage system becomes overburdened.
A series of measures are in development to handle impacts on water quality caused by chemical spills. St. Marys currently operates and maintains various lakes and sedimentary basins for treating stormwater and discharges from the mine. Effluent cleaning practices will be employed to minimize possible leaks and consequent impact on the water.
Before demolishing the buildings and foundations, all hazardous waste will need to be removed. Demolition residues will be loaded and transported to a specific storage site. The parking lots and roadways could also be demolished and transformed into recreational and residential areas.
Controlling cement and mine dust is a focal point in rehabilitation. To address this issue, the decommissioning plan includes the operation of a sprinkling system to dampen down the dust raised during the demolition as well as the periodical application of a magnesium chloride solution to the road surfaces.
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