Overview of the 2014-2015 Sewage Project from Robin Repetto
Due to the old septic tanks being structurally damaged, and not performing as they should, it was decided to build two new septic tanks. These would be built to a higher capacity to accommodate the change in the village growth since the installation of the previous septic tanks built pre 1961.
The sewage project started on the 9th October 2014 and Victor Cinamon MCIOB PrCM MIQ was contracted to visit Tristan and supervise the construction of the new sewage and septic tanks. These were designed with a single dividing wall and two containment areas. A soak away was constructed to maximise the coverage of drainage and to minimise the disruption to the grazing within the field.
Some pipe work was renewed within the village area, as these were made from old pitch fibre, but not all could be changed as the scope of work would be too large.
Flow meters were used to determine the amount of water consumed by the community to justify the size to build the tanks. The new sewer system would be gravity driven, with sewage being piped into the two new separate septic tanks. Built in the “American Fence” they are situated at the lower slopes of the settlement. These tanks require no pumps, settling ponds, drying sites and no mechanical dependence, nature doing all the work of breaking everything down. The new tanks were situated as close to the existing old tanks as possible so new piping could be transferred over quite easily, without any disruption.
A huge thanks to all who contributed in working on the water, sewage and also the electrical projects. Your participation was greatly appreciated.