Project Update - July activities - Terramin Australia Limited

Project Update – July activities
 Stage 1 EPEPR – drilling of water bores
     Approved 13th June, in line with most recent feedback
     No feedback on the test work component (stage 2)
     Additional discussions required with DEM/DEW on test work component (stage 2) once stage 1 results are known –
      the Project needs to understand & meet government expectations
 Land management onsite
     Installation of gully erosion mitigation continues on site – part of soil erosion management planning
     Weed spraying and baseline environmental monitoring continuing (groundwater, surface water, dust, subsidence,
      vibration and overpressure)
 New CEO and CFO
     Richard Taylor (CEO) here tonight. Simon Iacopetta is our new CFO
 Attended SA Investment in Mining and Exploration Conference – see here for Richards presentation -
  https://www.terramin.com.au/category/asx-announcements/
 Draft Miscellenous Purposes Licence application for Angas Zinc mine ML6229 provided to government
     To get feedback on if the document aligns with MD006
 Newsletter released includes update on Terramin’s gold strategy

    TERRAMIN AUSTRALIA LIMITED                                                                            SLIDE No. 1

Project Update – July activities

         Site visit by Georgina Downer
         Updating Bore census information
         Follow up on polo query

TERRAMIN AUSTRALIA LIMITED                   SLIDE No. 2

Objectives of MAR drilling and Stage 1

 Confirm aquifer suitability for MAR and evaluate the groundwater model under mining
  conditions to demonstrate effective management of:
     Groundwater levels at existing operational wells.
     Baseflow into the Inverbrackie Creek.
     The higher salinity groundwater from the older Kanmantoo Formation to the east

 STEPS
     Drill bores (3 sites – two bores per site required) – planned start late Aug 2018
     Short term extraction pump tests* (under legal allocation) at the 3 sites to:
       – Evaluate aquifer characteristics
       – Monitor surrounding bores responses
       – Finalise the objectives of the Reinjection Trial (Stage 2)
       *Waiting on final approval of water allocation permits
     Submit the design of Reinjection Trial (Stage 2) to DEM and DEW for approval
TERRAMIN AUSTRALIA LIMITED                                                                SLIDE No. 3

EPEPR Stage 1 – Drilling of Water Bores

 Bore locations
     Three locations (green rings)
     Selected to best meet objectives of the
      trial – AGWT report & model
 Each site consist of:
     one reinjection bore; and
     within 20 meters, one monitoring
      piezometer
 Each site has one “spare” bore location
  identified for contingency

     TERRAMIN AUSTRALIA LIMITED                 SLIDE No. 4

Noise monitoring – Query from last meeting how will
    logger be placed
 Monitoring locations are
  informed by an acoustic model.
  EPA review during ML PEPR
  phase prior to approval.
 Example at sensitive receptors:
  Measurable Criteria for ML6229
  (Angas)
     Day (7am-10pm) 57dB(A)
     Night (10pm-7am) 50dB(A)
 Proposed Measurable Criteria for
  BiH operations:
     Day (7am-10pm) 52dB(A)
     Night (10pm-7am) 45dB(A)

     TERRAMIN AUSTRALIA LIMITED                   SLIDE No. 5

Noise monitoring – approved Angas monitor limits

                      Maximum permissible Leq15min noise levels     Maximum permissible Leq15min noise
                          to comply with Leading Indicators       levels to comply with compliance criteria
                         Day time (7am to   Night time (10pm to    Day time (7am to    Night time (10pm to
     Location                 10pm)                 7am)                10pm)                  7am)

East Monitoring
Location                       62                   56                    72                   66
West Monitoring
Location                       64                   57                    74                   67

* Note; The maximum permissible noise levels are subject to change during the annual noise model review.

  TERRAMIN AUSTRALIA LIMITED                                                                   SLIDE No. 6

Noise Monitoring – Conceptual BIH contours
Surface construction phase

  TERRAMIN AUSTRALIA LIMITED                 SLIDE No. 7

Noise Monitoring – Conceptual BIH contours
Operations phase

  TERRAMIN AUSTRALIA LIMITED                 SLIDE No. 8

Baseline Soil contamination and Land & Soil Quality

    Extensive soil sampling has been done over the Mineral Claim area and
     the district more broadly – by government and various exploration
     companies since the early 1980’s
    There is zones of naturally occurring mineralisation as well as residue
     from former land uses (1880’s mining included, as well as rubbish like
     batteries in creeklines, etc)
    Terramins strategy moving forward is not to disturb any areas with high
     analytes without a soil management plan in place. Map these locations
     and avoid disturbing where ever possible.
    Soil erosion is a issue that needs management, silty clays, clays and
     sandy clays on site; especially with bare soil areas – eg during
     earthworks

TERRAMIN AUSTRALIA LIMITED                                           SLIDE No. 9

Example – Arsenic in the district

TERRAMIN AUSTRALIA LIMITED          SLIDE No. 10

Example previous land use – the historic Ridge gold
mine

TERRAMIN AUSTRALIA LIMITED                    SLIDE No. 11

The Ridge mine site in 2014

TERRAMIN AUSTRALIA LIMITED    SLIDE No. 12