The following criteria should be considered for the consultancy cost to be undertaken depending on the property and requirements of the activity during the evaluation process:

• Credentials, (i.e. AS9100 lead auditor certificate, OHSAS 18001 & ISO 14001 lead auditor certificetes due to indirect concern),
• Expertise,
• Experience,
• Attributes (i.e. communication skill),
• Availability,
• Accesibility,
• References.