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Monitored natural attenuation - mechanisms, site characterisation, evaluation, and monitoring

21 October 2013 08:00 AM - 22 October 2013 05:00 PM
Past training

The use of monitored natural attenuation (MNA) as a remediation approach requires a sound understanding of natural attenuation mechanisms in order to evaluate their potential efficacy in achieving remedial goals. Many state and federal agencies recognize MNA as a viable remediation approach, but this alternative must be supported by adequate evidence of its effectiveness. Such evidence requires adequate site characterization to determine solute plume behaviour and includes an evaluation of natural attenuation processes, making realistic estimates of attenuation rates and source decay rates, and designing an adequate monitoring program to show that natural attenuation is occurring as expected.

This 2-day short course provides the conceptual and technical background necessary to evaluate natural attenuation mechanisms and their interaction with source and transport processes at sites with organic and inorganic chemicals. It also provides in-depth discussions of the mechanisms of natural attenuation, data collection and analysis, quantification of contaminant transport and fate processes, and regulatory considerations involved in implementing MNA as a remedy for groundwater contamination. The course stresses practical information and guidelines useful for evaluating natural attenuation and applying MNA as a remediation approach.

This course also includes an introduction and guidance on the use of CRC CARE Technical Report No. 15, “A technical guide for demonstrating monitored natural attenuation of petroleum hydrocarbons in groundwater”, to be given by the report co-author Barry Mann.

In producing this report CRC CARE relied on a project advisory group which included representatives of the Victoria, Queensland, Western Australian, New South Wales and South Australian environmental regulators and the petroleum industry in Australia. This has resulted in the report being utilised as the key technical guidance document on the implementation of MNA for dealing with Australian groundwaters impacted by petroleum hydrocarbons.

Learning Objectives

Completion of this course will allow you to:

  • Develop an appropriate field sampling  program for evaluating natural attenuation
  • Understand the mechanisms of natural attenuation and assess their importance
  • Understand and evaluate natural attenuation as a remedial alternative
  • Develop and implement a monitoring program for MNA

Download the training flier here.


Todd Wiedemeier, President and Technical Director of T.H. Wiedemeier & Associates, Evergreen, CO
Barry Mann, Principal Hydrogeologist, GHD

Course Venue

Karstens, 123 Queen St, Melbourne, Victoria - click here for map.

Course Fees

ACLCA and CRC CARE member early bird rate (Pre 18 September): $950 pp (incl GST)
ACLCA  and CRC CARE member standard rate: $1,200 pp (incl GST)
Non-Member early bird rate (Pre 18 September): $1,300 pp (incl GST)
Non-Member standard rate: $1,400 pp (incl GST)

Delegates will receive course notes on USB and certificate of attendance. Morning and afternoon teas and lunch are provided

Register online at

Contact information

For more information contact Louisa Nicholls on 0407 360 780 or email: