3. For each contaminated site that has been found to be contaminated following an investigation pursuant to Article 15 or by any other means, Member States shall ensure that a site-specific risk assessment is carried out for the current and planned land use to determine whether the contaminated site poses unacceptable risks to human health or the environment. If the information gathered pursuant to Article 15 is sufficient to conclude that the soil contamination does not constitute an unacceptable risk to human health or the environment, or to conclude that soil remediation is needed, Member States may decide not to carry out the site-specific risk assessment.