The Wasserverband Peine, hereinafter referred to as AG, intends to put out to tender the cleaning and visual inspection of the sewer networks in the village of Freden.

The performance of the optical inspection shall be fulfilled in the period from - to. The following are to be investigated:

- approx. 11,575 m SW main channel DN 150-200 (approx. 345 pipes); Depth between 0.9 and 4.8 m and

Pipe lengths from approx. 2.0 to 100.0 m - approx. 360 SW main sewer shafts with depths from 0.8 to 4.6 m

- public and private connection lines on approx. 550 plots with approx. 360 SW house control shafts,

Connecting pipes shall be inspected up to the main channel or a house control shaft. In the case of private connection lines (seen in the direction of flow above the house control shaft or the property boundary), the inspection of the main line must be carried out. Sub-branches do not need to be examined.

- approx. 10,515 m RW main channel DN 150-1400 (approx. 370 pipes); Depth between 0.5 and 4.2 m and

Pipe lengths from approx. 2.0 to 79.8 m - approx. 365 RW main sewer shafts with depths from 0.4 to 4.4 m

- public connection lines on approx. 550 plots and approx. 350 lines of road drains

The following points are also a condition for participation in the competition:

-Reference projects of the last 3 years

-KI-Schein (gepr. Sewer inspector, with at least 3 years of professional experience) or a comparable certificate must be available

-Quality protection Sewer construction Quality marks "R" (cleaning) and "I" (inspection) or equivalent certificates must be available

-Rinsing trolley must be a conditioner for ecological reasons

-The TV inspection of the house connections must be carried out with a 3 D progress measurement (GeoSende or equivalent)