Process

End-point scenario

Active bioremediation comes to an end:

Utilise long term natural attenuation for residual contamination

Assessment of residual inherent biodegradation capacity

Cessation of active bioremediation

Monitoring of on-going natural biodegradation - "natural attenuation"

• electron acceptor capacity
• toxicity
• nutrients - trace elements
• biodegradation rates - half life
• mass reduction
• distance of stabilisation
• natural attenuation stabilisation vectors