A Common Issue on Former Industrial Land: Asbestos in Soils

Discussions about asbestos in construction usually center on buildings—such as pipe lagging, ceiling tiles, and insulation boards. However, the issue of asbestos in soils receives less focus, despite being a significant and increasing concern on former industrial sites in Essex, Kent, the North West, and other regions with industrial or port histories. Its less visible nature and lower recognition mean it is often discovered later than ideal.

Asbestos in soils usually comes from demolition debris. When buildings with asbestos-containing materials were demolished—often decades ago, before such materials were banned or disposal standards improved—the debris was often used as fill, spread on-site, or left in made ground layers. In former industrial areas, factory sites, docklands, and ports, finding historically contaminated fill like this is common and not unusual.

The development process carries considerable risk. Construction tasks such as excavation, piling, drainage, and foundation work can disturb asbestos-containing material and release fibres into the air. Workers performing groundworks without awareness of asbestos presence are exposed to a danger that proper site investigations would have identified and mitigated. This situation often leads to enforcement actions, but it is entirely avoidable.

Investigating soils for asbestos requires specialized sampling and analysis. Typical geotechnical investigations usually don’t cover asbestos testing unless specifically planned. For sites with a history of industrial use, demolition, or unknown fill sources, it is essential to include targeted asbestos assessments from the beginning of the ground investigation. When asbestos is detected, the remediation plan must be tailored appropriately — involving controlled removal, proper waste classification and disposal, and validation to ensure the site meets the required cleanup standards.

Spectra collaborates with developers and contractors throughout Essex, Kent, the North West, and beyond, conducting asbestos surveys and site investigations. They also provide controlled land remediation, including the removal of asbestos in soils. For sites where enforcement actions, project delays, or unforeseen remediation costs could occur, early investigation combined with a structured response to findings offers a clear and effective solution.