buy ultram Durrat AlBahrain
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Environment and Engineering

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Enviroment

Durrat Al Bahrain and the Environment

From the outset, maintaining an environmental balance was an important criterion of the Durrat al Bahrain scheme. We commissioned Atkins, an internationally recognised environmental consultant to provide environmental and ecological expertise. They meticulously undertook both marine and land development Environmental Impact Assessments (EIAs) in accordance with Environmental Authorities stipulations.

EIAs assess all impacts relating to the design, construction and long-term existence of the project, and identify measures to protect and mitigate any adverse consequences on the local environment.

Atkins completed a number of studies such as ecological surveys, water flow systems through the resort, water quality monitoring and species recording, such as dolphins and bird life, as well as other species unique to Bahrain which visit the land and waters in and around the project. The results of these investigations identified where environmental compensation was required and how to incorporate proposals into the design to benefit the environment.

We are compliant with the environmental laws and regulations of Bahrain and the region and maintain our own stringent Environmental Management Plan. DKAB’s environmental commitment extends to all aspects of the project, from design to the construction and operation of the project. Our client representative, Bovis, and environmental specialists, Atkins, audit our contractors on a monthly basis to ensure compliance to their own Environmental Management Plans and to the law.
DKAB’s environmental commitment also extends to supporting the local community. For example, we have sponsored the Bahrain Centre for Studies and Research to design and maintain a website on Bahrain’s marine life and endangered species.

The study will update records of endangered species with a view to protecting those living in Bahrain waters such as dugongs and turtles. Atkins has proposed an environmental enhancement plan to include the planting of mangroves, bird conservation activities and establishing reefs.

Mangroves are a threatened species in Bahrain and the proposed planting in suitable locations around the resort will safeguard the long-term survival of mangroves. We have also been successful in retaining Hidd Al Jamal, an existing piece of the mainland in which white cheeked terns, flamingos, and Socotra cormorants are known to nest on and visit frequently.

We also expect the islands themselves to create new habitats for fish and other aquatic species and we are considering deploying reef balls to provide additional habitats as well as offering an additional attraction for swimmers and divers.
On-going monitoring demonstrates our dedication to the environmental importance of the site and surrounding areas. We take every effort, precaution and measure to protect the environment on Durrat Al Bahrain and to demonstrate that development and environment can exist harmoniously together.

 

 

Engineering

• Challenges Faced in preparing the Project Design

  1. Determining of the final reclamation at +2.6mCD
  2. Removal of unsuitable material from south Crescent and Hotel Island with limitation on removing excessive quantities at minimum costs
  3. Beach design from limited resources of sand.
  4. Value engineering exercise carried out for an economic use of rock resulting in the use of 15 different grades of armor and under layer rock.
  5. Use of three different grades of geotextiles in respect of different grades of rock.
  6. Design of Toe Bunds and Groynes
  7. Final plot levels in relation to perimeter rock revetment levels.

 

• Hydraulic Impact

  1. Increase in the sea bed levels due to dredging from north borrow areas required a redesign of the rock revetments, especially at the atoll heads

 

• Construction Techniques used in Dredging and Reclamation

  1. To obtain the best available material from a very complex sea bed and predetermined boundaries required excessive numbers of bore holes to be drilled. Further pumping with a dredger of capacity 50-60,000cum/day had limitations in getting the placement for the best material in relation to the location.
  2. Setting Out for construction of Islands was a challenge as it deviated from the conventional straight to curved boundaries.
  3. Dredging to minimum depth of -3.0mCD regardless of quality of material
  4. Reclamation was a 2 stage process with first stage filling taken to about +1.0m CD and the next stage to the final level of +2.6m.
  5. First stage filling done by using spill barge and the next stage by shore pipe lines with land based equipment. Diffusers were used for control of placement.

 

• Statistics

  1. Total dredged volume is 34.0million cum
  2. 65km of rock revetments
  3. 1.4million cum or 2.3million tons of rock used in revetment construction
  4. Length along central axis of Atoll 2.Km, Petal 0.7Km
  5. Perimeter length of Atoll 4Km, Petal 2.4Km and Hotel Island 7.0Km

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