Sustainable risk management near a classified NATURA 2000 area

NATURA2000 area

NATURA2000 area

Contact

Jarno Laitinen

Senior Advisor, Site Solutions
T: +358 44 355 8236

At an earlier site investigation Ramboll had identified that large quantities of lead shots from historical shooting range activities had deposited in wet marshland. Due to the naturally acidic environment, lead was continuously leaching. The lead contaminated waters were transported off site with runoff via a network of ditches that were directly connected to the aquatic systems of the ecologically sensitive biotopes at the bordering NATURA 2000 area. 

Due to the complexity of the site, ecological risks could not be excluded, and the site was identified as a potential national priority site. 

Sustainability and resilience assessment

Prior to engaging in further investigations or engaging in remedial options assessment, a sustainability and resilience assessment of alternative risk management strategies was conducted to help the client, regulators, and other stakeholders to better understand the effects and resilience of alternative strategies in long-term (100+ years).

The assessment was based on three scenarios: 

(1) Baseline scenario: accept the risk
(2) Management scenario: reduce loading to NATURA habitat
(3) Elimination scenario: remediate the site completely

Based on sustainability assessment it was assessed that elimination scenario (3) was the most sustainable and resilient long-term approach in terms of its ecological, social and economic effects. 

Using sustainability and resilience assessment for alternative risk management strategies early in the decision-making process enabled creating a shared understanding of the long-term impacts and expectations, and to direct further investigation and design efforts in a cost-efficient way.
 

At an earlier site investigation Ramboll had identified that large quantities of lead shots from historical shooting range activities had deposited in wet marshland. Due to the naturally acidic environment, lead was continuously leaching. The lead contaminated waters were transported off site with runoff via a network of ditches that were directly connected to the aquatic systems of the ecologically sensitive biotopes at the bordering NATURA 2000 area. 

Due to the complexity of the site, ecological risks could not be excluded, and the site was identified as a potential national priority site. 

Sustainability and resilience assessment

Prior to engaging in further investigations or engaging in remedial options assessment, a sustainability and resilience assessment of alternative risk management strategies was conducted to help the client, regulators, and other stakeholders to better understand the effects and resilience of alternative strategies in long-term (100+ years).

The assessment was based on three scenarios: 

(1) Baseline scenario: accept the risk
(2) Management scenario: reduce loading to NATURA habitat
(3) Elimination scenario: remediate the site completely

Based on sustainability assessment it was assessed that elimination scenario (3) was the most sustainable and resilient long-term approach in terms of its ecological, social and economic effects. 

Using sustainability and resilience assessment for alternative risk management strategies early in the decision-making process enabled creating a shared understanding of the long-term impacts and expectations, and to direct further investigation and design efforts in a cost-efficient way.

 

Ramboll

Ramboll
First Floor, Emerald Building
Oud Metha Road
PO Box 116921, Dubai, UAE
Tel:+971 4 334 3616
Fax:+971 4 334 3617

Mail: info@ramboll.ae

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