EN 
DE 
FR 
Contaminated sites are among the most significant challenges in modern environmental and geo-engineering. As legacies of former industrial, commercial and military uses, they continue to pose significant risks to human health, groundwater, ecosystems and construction projects.
Professional investigation, assessment and remediation is therefore an essential part of responsible land development and sustainable urban transformation.
ICP Ingenieure GmbH - Member of the SIERA Alliance specialises in sustainable and economically viable solutions for dealing with contaminated sites. With decades of experience in geotechnical and environmental engineering, ICP Ingenieure supports local authorities, companies, project developers and private clients in transforming potential risks into safe and valuable sites.
About SIERA - Engineering For A Better Tomorrow
SIERA is a platform that combines engineering expertise with sustainable investment and strategic partnerships to achieve measurable impact on real-world challenges.
Through its network of member companies and an integrated ecosystem, SIERA transforms innovative ideas into practical engineering solutions that promote environmental protection, resilient infrastructure and sustainable development.
Guided by the leitmotif „Engineering For A Better Tomorrow“ SIERA promotes technical excellence and interdisciplinary collaboration. As a member of this alliance, ICP engineers benefit from a strong network of specialists and expanded cross-industry expertise.
What are contaminated sites?
Contaminated sites are areas that have been contaminated with hazardous substances. These areas can be found at various locations. The main categories of contaminated sites are listed below:
- Former waste disposal facilities such as landfills or illegal dumping sites
- Former industrial or commercial sites where hazardous substances were handled (e.g. chemical plants, petrol stations, metalworking companies)
- Military sites and old defence sites
These surfaces may contain pollutants such as
- Heavy metals
- Mineral oil hydrocarbons (MKW)
- Polycyclic aromatic hydrocarbons (PAHs)
- Highly volatile chlorinated hydrocarbons (LCKW)
- Solvents and explosives residues
A key characteristic of contaminated sites is that contamination is often invisibly hidden underground. Without professional investigation, contamination often remains undetected - until construction work begins or environmental damage occurs.
ICP Ingenieure GmbH - Member of the SIERA Alliance conducts structured site analyses to identify such hidden risks at an early stage and ensure planning security and regulatory compliance.
How do contaminated sites arise?
Historically, environmental and resource protection standards were often inadequate or non-existent. Contamination was caused by, among other things:
- Leaking underground storage tanks
- Improper disposal of industrial waste
- Production residues
- Accidents and breakdowns
Thanks to its interdisciplinary expertise in hydrogeology and the modelling of underground processes, the ICP Engineers GmbH The project will analyse the pathways of pollutants and assess potential impacts on groundwater and surrounding land use.
Risks for people, the environment and development projects
Environmental and health risks
Polluted soil and contaminated groundwater can:
- Jeopardising the drinking water supply
- Release pollutant vapours into buildings
- Affect ecosystems and biodiversity
- Cause direct health risks through inhalation or skin contact
ICP Engineers GmbH carries out scientifically based risk assessments to analyse exposure pathways and evaluate whether remediation measures are required in accordance with environmental legislation.
Risks for construction and property projects
Contaminated sites can have the following effects for project developers and property owners:
- Unexpected construction delays
- Increased disposal and clean-up costs
- Complex authorisation procedures
- Legal liability risks and economic uncertainties
The early involvement of the ICP Engineers GmbH ensures that potential risks can be recognised before acquisition or the start of construction. This creates transparency, cost control and legal certainty.
The structured process of contaminated site management
The professional treatment of contaminated sites is carried out according to a clearly defined and regulated procedure. The ICP Engineers applies a systematic methodology that is based on the applicable environmental regulations and recognised engineering standards.
| Phase | Objective | Contribution of ICP engineers |
| Historical research | Identify potential sources of contamination | Archive research, aerial photo analysis, official file review |
| Orientating examination | Confirm the presence of harmful substances | Soil and groundwater sampling, orientating analysis |
| Detailed investigation | Define expansion and concentration | Boreholes, groundwater measuring points, laboratory analyses |
| Risk assessment | Evaluate hazard potential | Exposure modelling, regulatory comparison |
| Refurbishment planning | Developing a technical solution | Feasibility studies, cost estimates, coordination with authorities |
| Realisation & monitoring | Ensuring successful reorganisation | Construction supervision, quality assurance, documentation |
This structured approach ensures transparency, traceability and compliance with environmental regulations, in particular the German Federal Soil Protection Act (BBodSchG).
Remediation strategies for contaminated sites
Depending on the site conditions, the ICP Engineers GmbH Customised renovation concepts, among other things:
- Soil excavation and replacement
- Floor air extraction systems
- Pump-and-treat process for groundwater remediation
- In-situ biological or chemical treatment processes
- Securing and sealing solutions
Each reorganisation concept is evaluated on the basis of:
- Technical feasibility
- Economic efficiency
- Ecological sustainability
- Requirements of long-term monitoring
By combining engineering precision with economic foresight, the ICP Engineers GmbH ensures that refurbishment measures are implemented both effectively and in an economically viable manner.
ICP Ingenieure - Technical expertise in brownfield development
ICP Engineers GmbH is a recognised specialist in the fields of:
- Contaminated site investigation
- Brownfield revitalisation
- Hydrogeological assessment
- Geotechnical engineering
- Environmental Engineering Due Diligence
- Construction supervision and quality assurance
ICP Ingenieure accompanies projects from early feasibility studies through authorisation procedures and remediation to the final approval of the site. The company works closely with the relevant authorities to ensure smooth approval processes and regulatory safety.
Through the integration into the SIERA Alliance ICP Ingenieure GmbH benefits from interdisciplinary expertise in the fields of engineering, environmental consulting and sustainable infrastructure development.
Contaminated sites and real estate - a hidden liability risk
Purchasing land without a professional investigation of contaminated sites can expose buyers to considerable risks. In many jurisdictions, liability for contaminated sites is transferred to the new owner - even if the contamination was caused decades ago.
ICP Engineers carry out comprehensive site assessments prior to acquisition and thus enable
- Transparent risk assessment
- Reliable cost estimate
- Security in negotiations
- Investment protection
An early inspection prevents unexpected financial burdens and ensures that the property retains its value in the long term.
Sustainable land use through professional remediation of contaminated sites
The professional remediation of contaminated sites is not only a regulatory obligation, but also a significant contribution to sustainable development.
Instead of taking up new greenfield sites, redeveloped brownfield sites can be put to new use, for example for:
- Residential development
- Commercial and industrial sites
- Public infrastructure
- Urban revitalisation projects
ICP Engineers actively support sustainable land recycling strategies that reduce land consumption, protect groundwater resources and contribute to climate-resilient urban development.
Why early action is crucial
The earlier contaminated site risks are recognised and assessed, the greater the benefits:
- Reduced project delays
- Better cost planning
- Greater regulatory security
- Increased investor confidence
- Long-term ecological security
ICP Engineers GmbH ensures that environmental risks are identified at an early stage and translated into customised remediation strategies that comply with environmental laws and regulations.
Contaminated sites pose complex technical, ecological and legal challenges. However, these risks can be effectively managed with a structured investigation, precise risk assessment and professionally developed remediation strategies.
ICP Ingenieure GmbH - Member of the SIERA Alliance combines environmental expertise, regulatory experience and sustainable planning to realise safe and economically viable solutions for brownfield and revitalisation projects.
Are you planning to acquire, develop or revitalise a property with potential environmental risks?
Take Contact with the ICP Engineers GmbH and the SIERA to secure your project from the ground up.
Engineering for a Better Tomorrow.
