Collaborative land remediation project on site of former refinery
Collaborative Land Remediation Project On Site Of Former Refinery

Starn group members Dynamic Air Shelters and Safehouse came together to collaborate with a long-standing client to plan a complex land remediation project in Europe. The land surrounding a former refinery had become contaminated due to hydrocarbons seeping through the basement of the refinery into the surrounding soil.
The 11-hectare site required significant remediation by excavating soil and water 3 to 5 meters deep before any potential reuse of the land. During the land remediation project, odor nuisance for the residents of the local area was to be avoided.
Our project team successfully delivered the client’s complex project requirements for a vapor containment large span shelter, over the 4-month pilot project. The Dynamic team erected a unique shelter and air lock movement sub-project which demonstrated our ability to engineer and manage shelter movement over a large area. This achievement resulted in Dynamic Air Shelters winning the subsequent 3-year main project (including 18 months of design and engineering) which includes delivery of a 50m span shelter with two adjoining air lock shelters.
Challenge
This project presented a wide range of unique challenges that are not often present during delivery of Dynamic’s products and services. From navigating issues surrounding the COVID-19 pandemic and Brexit, to working across several time zones with a difference in language, we always utilized close client collaboration to successfully meet and surmount these challenges. Effective and efficient communication with the site owners, locals, and the contracted project management team was key to the success of the project. To determine feasibility of the overall remediation work, and before committing to a larger project, the client authorized a pilot shelter which was designed to demonstrate how our solution would work in a “real-world” application.
All remediation works were required to be contained within the shelter to avoid odor issues from Total Petroleum Hydrocarbons (TPH) soil contamination and the potential presence of chemicals such as Hydrogen Sulfide (H2S), Benzene, Toluene, Ethylbenzene and Xylene (BTEX), etc.
Due to the size of the area to be remediated, the shelter was required to remain inflated and feature the ability to be to move longitudinally, transversely, and rotationally whilst being towed from excavation point A to excavation point B.


Planning
A detailed kick-off meeting and planning session took place in Paris, France to identify potential project risks. Mitigation plans were put in place based on a What-If Analysis approach.
The overall land remediation project is being managed using an agile project management approach.
• The project is broken into smaller pieces, which are then prioritised by the team in terms of importance. Phase 1 of the land remediation project included the Pilot portion of the project, phase 2 is the design and engineering of a larger 50m structure, phase 3 the manufacturing and shipping of the structure and required skidding system and phase 4 being the site services (land remediation).
• This project promotes collaborative working between Dynamic Air Shelters/Safehouse, the prime contractor and the client.
• The agile project reflects, learns, and adjusts at regular intervals to ensure that the customer is always satisfied and is provided with outcomes that result in benefits for everyone involved.
• Agile methods integrate planning with execution, allowing an organisation to create a working mindset that helps a team respond effectively to changing requirements.
Solution
The quarantine shelter and associated air lock shelter was designed in Canada by our highly skilled engineering team to the client’s unique specifications. The resulting design was then manufactured installed on site atop a skid matting system that provided the ability to tow the shelter in any direction across the identified work site.
A mitigation strategy was also developed to ensure odor was contained within the quarantine shelter and included control measures and physical controls:
a. A well-engineered air lock system using negative pressure
b. A HVAC decontamination system (provided by main contractor) ensured all contaminated air was prevented from leaving the shelter by any means other than through the decontamination system.


Outcome and Benefits
The pilot project proved the feasibility of successfully remediating the land without odor issues which would have affected the local community by utilizing an inflatable Dynamic Air Shelter. The shelter was successfully moved in all directions and all odors were contained as anticipated.
After a successful pilot project, the client worked with the Dynamic Air Shelters and Safehouse team to identify lessons learned and to plan for phase 2 of the project which included the design and engineering of a 50m structure with two connecting air lock shelters.
The manufacturing phase of the 50m structure has since started and planning for full scale site services is now well underway.











