Remodelling Having designed and specified the project, Biomatrix Water worked with specialist contractor, Water Gems, to deliver the pond refurbishment. The remaining water, mud and vegetation was removed and the cobbles that had been used on the pond bed were removed and cleaned for re-use in the refurbishment. A JCB and mini digger had to be deployed to cut through the original hard clay surface to remove it, revealing a soft, sand substrate that could be shaped to the requirements of the remodelled pond.

“Biomatrix Water’s vision for the pond included increasing its size and changing its shape.”

Biomatrix Water’s vision for the pond included increasing its size and changing its shape, retaining the glass and wooden bridges already in place while enhancing the water quality with the addition of a cascade to aerate the water. The plans also included supporting biodiversity by introducing a floating island.

The new pond layout required extensive detailing, particularly around the cascade and the bridge footings. Although the GeoGard EPDM system is only 1.5mm thick it is very strong and flexible with excellent tear and puncture resistance. This flexibility means the lining adapts and conforms to irregular substrates and lays flat with no voids beneath. Moreover, GeoGard EPDM’s capacity for elongation by over 300% in all directions ensures that the lining will not be damaged during installation or by any post-installation movement.

Collaborative approach Firestone worked with Biomatrix Water to configure the layout of the lining installation to optimise the use of the GeoGard EPDM material and minimise waste. Firestone also provided installation training. Following excavation of the new pond layout, two tonnes of backfill was arranged onto the soft sand substrate and compacted twice to provide a robust, smooth surface. A 500g/M2 geotextile layer was then laid onto the pond bed to protect the GeoGard EPDM and the 1.5mm GeoGard EPDM was installed, using Firestone’s QuickSeam Splice Tape to seal the joints between sections of membrane and QuickSeam FormFlash for the varied detailing elements.

With the lining in place, the project team returned the cleaned cobbles to the pond and added gravel, obscuring the lining and providing a natural-looking water bed. Pipework to take additional filtration to the cascade was also obscured in the gravel. Extensive planting was then carried out, including the creation of an island, which provides a habitat for wild fowl above the water and a microorganism habitat below the water line amongst the roots of the island’s planting.

Long-term benefits The project has not just reinstated the pond but has dramatically improved it, adding to the biodiversity and sustainability that have always been so central to the aims of Enterprise Park. Thanks to the service life of the GeoGard EPDM membrane and the water quality improvements introduced to the feature, the pond will continue looking great and enhancing the work environment with minimal maintenance for many years to come. TOMORROW’S FM | 31

Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66