ISO 10381-5:2005 gives guidance on the procedure for the investigation of urban and industrial sites, where either it is known that soil contamination is present, or the presence of soil contamination is suspected. ISO 10381-5:2005 is applicable where there is a need to establish the contamination status of the site, or there is a need to establish the environmental quality of the site for other purposes. ISO 10381-5:2005 includes guidance on the collection of information that is necessary for risk assessment and/or the development of remedial action plans (e.g. whether remediation is required, and suggestions as to how this might be best achieved). It provides guidance on the information required in general; specific remediation methods may need additional information. ISO 10381-5:2005 is also applicable to sites where no soil contamination is expected, but the soil quality is to be determined (e.g. to make sure that there is no contamination present).