ATTCH 4 - IR Response - UXO vegetation clearance (Opec Systems)

Tuesday, 14 November 2017


Dear Sir or Madam,


                      RE: OPEC RESPONSE TO DEVEGETATION QUERY


UXO Information Response
       “UXO
      The site is located in an area with substantial potential for UXO. The development will increase the
      amount of people living in a UXO area. UXO assessment and UXO rehabilitation can lead to clearing
      protected vegetation.
      Information Required
        1.      Provide further information regarding the UXO clearances required and the amount of
                vegetation clearing necessary to render the site safe.”

This response should be read in conjunction with the report prepared by OPEC Systems which supported the
application.
In order to render the site safe, OPEC Systems will develop an investigation and remediation plan to reduce
the risk of UXO to ‘As Low As Reasonably Practical’ (ALARP) certification. OPEC Systems will need to
undertake a preliminary UXO survey in order to identify if UXO is present on the site. This process would be
required to achieve ALARP certification for any new development on the site, such as an outbuilding or new
dwelling/s.

The level of survey required to be undertaken on a site is dependent on the intensity and type of use to be
put to the UXO area. For example, on environmental sites where no development is to occur (for example, a
national park) a visual surface survey is adequate to achieve an ALARP certification. However, where
development is to occur, more detailed and sub-surface survey would be required, for example, Digital
Electromagnetic UXO survey (Ultra TEM2) or Analog Magnetometer (Foerster 4.032) survey in order to
achieve ALARP certification.

In relation to the subject site, there will be two UXO survey methods which apply to different parts of the
site, namely a visual UXO surface survey and a Digital/Analog survey.
A visual surface survey will be undertaken in areas of the site in which development will not occur, namely
those areas identified as “Environmental Covenant (Habitat Protection) Area” identified on the subdivision
layout plan (Appendix 1) and the Vegetation Management Plan – Occupation Phase (refer to John Delaney
response).

A visual surface survey is undertaken by walking over the site and visually inspecting the area. There may be
some minor vegetation clearance in parts of the site where undergrowth is to dense to enable visual
inspection. This is typically done by hand clearance, brushcutter or similar. It is unlikely that any significant
trees would need to be removed for the purpose of visual inspection. We note that we have used this