The construction of the sewage system with high-water relievers was executed simultaneously with the construction and connection of fecal water of the entire area of Gorica to the central wastewater treatment plant Vrtojba. Within the scope of the sewage network, we built and partially reconstructed 29 km of fecal and mixed sewage system, 12 pump stations, 27 relieving objects and 4 retention pools. The completion of the high-water reliever was extremely demanding. Along Erjavčeva cesta in Nova Gorica, construction of a new retention pool and the reliever on Feiglova ulica in Šempeter with an emphasis on various selected protection technologies for construction pits and on adapted technical options on site. The excavation of the construction pit for the retention pool was protected by a “Berlin wall” with additional anchoring with IBO anchors, which was successfully used in Slovenia for the first time for such depth and constructed scope.

Deadline for completion of work: October 2015

Value of performed work: €11.2 million

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