Building the Bigger Picture
Diversity and efficiency through environmental work
Efficient infrastructure serves the needs of residents and companies and is environmentally effective. Environmental impacts are inevitably created from construction and maintenance during the life cycle. Destia’s aim is to minimise the impact on the environment for the good of biodiversity and people. At the same time, we are constantly working to improve resource-, material- and energy-efficiency.
Environmental management is based on a management system (ISO 14 001) used throughout Destia. This system ensures that environmental issues are taken into account in all operations and that management is goal-oriented. Infrastructure projects also entail much licensed activity and regulation. Destia operates in accordance with environmental legislation and regulations.
As part of project management, Destia is monitoring the level of satisfaction of customers towards its care of environmental issues. In 2014, for management of environmental and safety issues we were given an average mark of 4.0 on a scale of 1-5 (4.0 in 2013, 4.0 in 2012).
The use of soil and aggregates
Every year Destia uses about 3 million tonnes of soil and aggregates. Destia has 316 licensed aggregate areas. In 2014, active work went on at about 130 areas.
From an environmental perspective, one of the key fields of responsibility in the extraction of soil and aggregates is to work for the good of biodiversity. The most important work is done in the planning stage of aggregate areas. When acquiring new areas, their natural values are investigated in advance. Protected areas and those otherwise valuable from a perspective of nature are left outside the area of operation. Legislation specifies the most valuable species and habitats, but on its own initiative Destia also aims to conserve other valuable locations.
Extraction areas at the end of their life cycle are treated so that vegetation returns to them as quickly as possible. Biodiversity can also be increased through extraction. For example, a quarry pond, a cliff for birds to nest on or a sunny slope for sun-loving vegetation may be created in the area.
Green motorway project
An example of the minimising of environmental impact and active work for biodiversity is the upgrading of National Road 7 (E18) into a motorway between Loviisa and Kotka, which has now been completed. Destia worked as part of the consortium that made the E18 a test bed for ecological solutions. This meant, among other things, the following measures:
- The consumption of electricity is being reduced by, for example, the use of solar panels and LED lights.
- Geothermal heat is being used in the heating of service buildings.
- Groundwater protection was built for all groundwater areas located in the vicinity of the motorway that are important from a perspective of water extraction.
- Bridges and culverts were dimensioned so that the currents of rivers and streams did not change.
- In order to preserve ecological connections, many green bridges, underpasses for animals and large bridges over water were built at key sites of animal passage.
- Work causing noise was restricted, particularly at the time when birds were nesting in Ahvenkoskenlahti. Common pipistrelle bats were also spotted in the area, and their behaviour was monitored using special equipment.
- At Tesjoki, a flying squirrel habitat was found near the motorway, so nesting and resting trees were protected from felling.
- In the immediate vicinity of the construction site at Ahvenkoski and Tesjoki and in the areas of Langinkoskenhaara on the River Kymijoki flowing through Sutela and Pyhtäänhaara flowing through Pyhtää live populations of rare thick-shelled river mussels. More than 7,000 mussels were moved upstream so that construction work would not disturb their lives.
Improving work efficiency
Destia is a pioneer in the use of construction machine automation. Construction machine automation is in use at almost all suitable Destia civil engineering-focused sites. The aim is to boost the performance and precision of work and to reduce material waste. Destia substitutes the use of non-renewable natural resources with renewable alternatives whenever possible. Examples include the reuse of crushed concrete and crushed material made from waste asphalt. In road projects, we use old structural layers where possible.
In project activity, we pay close attention to the planning of operating practices and logistics. We aim, among other things, at the optimisation of fuel consumption and material efficiency. The use of Destia’s fleet of trucks is monitored using a GPS-based system. By combining operating and fuel cost information, we get precise information about the efficiency and economy of each truck. The efficiency of the usage of fleet is monitored in railway business as well. For example the transfer rides of railway fleet have decreased nine per cent compared to the year 2013. This means fewer kilometers ridden on railways.
|Destia’s own energy consumption/turnover 453 GJ/MEUR.|
|Destia’s own consumption of electricity 4 160 MWh in 2014 (4,423 MWh in 2013 and 4,400 in 2012).|
|Destia’s own fuel consumption 5.5 million litres in 2014 (6.4 million litres in 2013 and 7.4 million in 2012).|
|Direct greenhouse gas emissions|
|Destia’s own greenhouse gas emissions from energy 15,039 tonnes.|
|Other indirect greenhouse gas emissions|
|CO2 emissions from work-related travel 2,416 tonnes.|