The previous investigation revealed limited contamination, with the exception of a “hotspot” of benzo(a)pyrene. A Polycyclic Aromatic Compound, it is normally produced by the incomplete combustion of coal or wood. Previous phases of remediation work comprised the removal of 80m3 of material from the hotspot. Loose chrysotile and amosite asbestos was also encountered in one additional location.
The site comprised undeveloped land, which had been subjected to land raising activities in 2010, to reduce the risk of flooding from the River Severn. It was known that the associated filling activities had been investigated for alleged waste offences. This raised the possibility that materials harmful to human health, could be encountered.