See II.2.4).

This assignment includes the cleaning of the street swirling with a modern piston, removal of sludge and impurities from the swirl, dewatering the sludge and processing (including sand separation) in an approved processing plant and, where appropriate, the unclogging of the clogged street butt.

The benefits are carried out on the territory of the city of Ypres and its districts (8900 Ypres Dikkebus-Sint-Jan, 8902 Hollebeke-Zillebeke-Voormezele, 8904 Boezinge-Zuidschote, 8906 Elverdinge and 8908 Vlamertinge) under the special specifications TD/2021/12 and Chapter 12.2 of SB 250, version 4.1 and, in principle, twice a year (with the exception of service year 2021).