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Sainsbury's Ground Source Retrieval System

We completed this project over 21 weeks.

This project involved installing an energy saving system to existing car park.  

Energy used in store is recycled back resulting in massive cost saving and energy efficiency. 

Works included;

  • Removal existing car par surface.
  • Bore field 19 x 150m bore holes.
  • Installation of the main manifold chamber.
  • Produce the lifting plan for the delivery of the plant room.
  • Reinstate landscaping and car park surface.
  • Manage the connection of system to all the refrigeration without loss of trade. 
  • Management of electrical service disconnect and reconnect.

“All the works were carried over 21 weeks during the days with the store trading. DGCL have great expertise within our team to programme the works making sure a very high Health & Safety process is in place and does not interrupt the customer shopping experience.”


  • The Company recognises the importance of providing all its employees with adequate health and safety training. 
  • On recruitment, all personnel are assessed for their individual training needs.  Information and certification is obtained for previous training, and any further training required is identified and recorded on the training matrix. The training matrix is maintained on a monthly basis to ensure that it is kept up to date, we provide training in the following areas: First Aid at work, SMSTS, SPA Training, IPAF, PASMA, fire warden, temporary works and asbestos.
  • All Sub-Contract Risk Assessments are sent in to Dartmouth General Contractors 2 weeks before the contractors are due to start on site. We then review the documents to ensure that they are suitable for the task. These are then approved and issued or declined with comments to the sub-contractors to make amendments accordingly. 
  • Our management team compile our own risk assessments, our PM’s assess the risks accordingly and then the Risks are assessed in line with the regulated numerical system. This is a recognised standard and has been approved by our H&S consultant and the associated risks are then calculated High, Medium or Low. 
  • Method statements are provided by all Sub-Contractors 2 weeks prior to starting on site and then processed in the same way as the Risk Assessments. 
  • We compile our own Method Statements in house with the approval of our H&S consultant before these are added to our H&S files.
  • All our PM’s and SM’s are sent on RA & MS training courses as and when required.
  • All sites have a site safety board, advising on first aid provision, fire routes, H & S poster and emergency contact numbers.


KPI’S are monitored, Targeted areas are 

  • Management
  • Cost
  • Health & Safety
  • Quality

The above project was forward thinking in terms of environmental schemes and a project that Dartmouth General Contractors Limited were delighted to be involved with as Food Retail Contractors.

“On this project we scored 95% Green.”

ClientSainsbury’s Ground Source Retrieval System

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