environmental case study

Environmental Due diligence
design stage

Location

Wiesbaden, Germany

Type

Residential

Stage

Design Stage

Area

8,610 m²

Project Details

Investors wishing to acquire a property, whether it is an existing building or a building yet to be constructed, need to know the ambient environmental conditions of the building’s setting and have to be well informed of the compliancy of the building’s services, envelope and structure. In addition to assessing the sustainability of the building itself, Environmental Due Diligence (EDD) looks at the soil, groundwater and surface water conditions as well as at ambient air emissions with the aim of determining the risks and economic investment involved.

In this case the building was still being designed and had not yet received a building permit. It is located next to Wiesbaden’s central station and is subject to excessive noise, from the existing railway lines. Furthermore the subject site was characterized by a former fueling station that had substantially contaminated the soil & groundwater. The soil & groundwater impact being fairly old had a long history of contaminated land surveys and pilot remedial testing. Amongst other things it was our task to study the existing reports and inform the client in a comprehensive way of the site’s status and potential hazards; particularly in the light of the forthcoming construction of the building. For example, did the design of the construction pit take proper consideration of the existing dimensions of the impact? Were provisions in place for the analysis and disposal of contaminated soil and groundwater?

The EDD revealed that further consideration of remedial procedures needed to take place prior to construction and reiterated who is responsible for the remedial costs. It also showed that the safety of a major sewer had not been taken into account during the design of the construction pit.