CONTRACTOR:
STATE CAPITAL OF HANOVER, ENVIRONMENT AND URBAN GREENING DEPARTMENT

BEGINNING CONSTRUCTION:
2016

BUILDING END:
2017

BUSINESS AREA:
ENVIRONMENTAL AND GEOTECHNICAL ENGINEERING

LOWER:
HANNOVER

The 25,000 m² Maschteich in Hannover was desludged from October 2016 to March 2017 by means of a buoyant suction vehicle in order to improve the water quality in the long term. A total of 5,176 m³ of sediment was pumped out of the meshed pond and dewatered using belt presses. This corresponds to a tonnage of 3,071, which was transported to the disposal plant as Z2 material according to in situ sampling.

Scope of services:

Conceptual design for desludging measures, coordination with authorities and application for appropriate formalities (waste, monument protection, nature conservation and water authorities), in situ sampling and declaration, calculation of sludge cubature, preparation of the award of contract by drawing up the specifications and the bill of quantities, Preparation of the construction schedule and cost estimate, expert supervision (local construction supervision, inspection of the degree of drainage, container sampling, implementation of control measures, internal and external accompanying certificates, management of construction meetings), auditing of the executing company.