2 David Low Way - Attachment 6 - UXO Assessment - OPEC

                                                                          OPEC - 2 David Low Highway, Castaways Beach
                                                                                             Rev 02 – AFU – 10 Aug 2017


QUANTITY & LOCATIONS OF REMNANT MUNITIONS
The precise location and extent of any remnant UXO contamination cannot presently be determined
– it is possible that UXO may be found throughout the entire Site, in a few ‘clumps’ or, conversely,
no UXO may exist within this specific area. Despite this uncertainty, it is currently assessed ‘likely’
that EO/UXO hazards of various types exist within the area. Available evidence suggests that the
most likely scenarios of significant concern are as follows:
         occasional, shallow-buried HE or WP UXO (e.g. mortars and grenades); and
         occasional, deeper buried HE or WP UXO (3”/4.2” mortars and [email protected] depth or
          more).

(Note: The above does not include various other EO/EOW including occasional unfired pyrotechnics
and SAA on the surface or partially buried as well as quantities of inert EO-related material such as
expended SAA cases, mortar safety caps, exploded parts of munitions, EO packing containers, etc).


RISK ASSESSMENT & MITIGATIONS
EO/UXO RISK MANAGEMENT PROCESS
The Risk Assessment methodology:
         is based on various international EO industry standards (e.g. various IMAS and IATG4), US
          DoD & EPA guidelines and global EOD industry accepted ‘best practices’;
         is broadly in line with the Dept of Defence/Cwlth risk management framework (including
          ‘Contamination Risk Assessment Tool’/CRAT); and
         is consistent with Australian Standards for Risk Management ‘AS/NZS ISO 31000:2009 Risk
          management - Principles and guidelines’.

RISK ASSESSMENT MATRIX
               Table 2 – Risk Assessment Matrix
                                                      ↓ Consequence Rating ↓
               Likelihood
                                   Insignificant    Minor       Moderate        Major       Catastrophic
               Rating ↓
                  Almost
                                     16 Med         10 High       6 Ext          3 Ext          1 Ext
                  Certain

                   Likely            19 Med         14 High       9 High         5 Ext          2 Ext

                Moderate              22 Low        18 Med       13 High         8 Ext          4 Ext

                 Unlikely             24 Low        21 Low       17 Med        12 High          7 Ext

                   Rare               25 Low        23 Low       20 Med        15 High         11 High



4
 IMAS – International Mine Action Standards, including EO/UXO activities; IATG - International Ammunition Technical
Guidelines (IATG) including IATG 02.10:2012[E]

For use only in relation to the specified project
© 2017 Copyright BOZ Technical Services Pty Ltd                                                         Page 16 of 22