Minutes of Centennial Mandalong Community Consultative Committee - - PowerPoint PPT Presentation

▶

Dec 10, 2023 21 likes •482 views

Minutes of Centennial Mandalong Community Consultative Committee Meeting Held Tuesday 19 June 2018 Meeting commencing at 4:05pm at Mandalong Mine Training Room PRESENT Member Name Organisation Margaret MacDonald-Hill (MMH) Independent

SLIDE 1

Centennial Coal Community Consultative Committee Meeting Minutes – 19 June 2018

Minutes of Centennial Mandalong Community Consultative Committee Meeting Held Tuesday 19 June 2018 – Meeting commencing at 4:05pm at Mandalong Mine Training Room

PRESENT Member Name Organisation Margaret MacDonald-Hill (MMH) Independent Chair John Shoebridge (JS) Dora Creek Community Mick Astles (MA) Mandalong Community Association Tracey Corkery (TC) arrived at 4.12pm Mandalong Community Association Anna Walsh (AW) Centennial Mandalong Pty Ltd Phil Enright (PE) Centennial Mandalong Pty Ltd Peter Cook (PC) Centennial Mandalong Pty Ltd Robyn Hall (RH) Mandalong Community Association (Alternate) Dr Lynden Rogers (LR) Mandalong Community IN ATTENDANCE Lisa Andrews (LA) Minute Taker APOLOGIES Member Organisation Angela Besant (AB) Mandalong Community Association Cr David Belcher (DB) Lake Macquarie City Council Jeff Dunwoodie (JD) Centennial Mandalong Pty Ltd Trevor James (TJ) Mandalong Community WELCOME The Chair welcomed all present. DECLARATION OF INTEREST The Chair made her usual declaration (appointed by the Secretary of the Department of Planning and Environment as the Independent Chair for Mandalong Community Consultative Committee; and that she is a member on the Mine Subsidence Board.) No changes to previous declarations by CCC members.

SLIDE 2

Centennial Coal Community Consultative Committee Meeting Minutes – 19 June 2018

PREVIOUS MINUTES Minutes Action The minutes of the previous meeting held on 13 February 2018 were confirmed without change. Moved: MA Seconded: LR BUSINESS ARISING Item Action Business arising from the previous minutes:

1. Rural Fire Shed Land Transfer
2. TransGrid – TL 24 Location
3. TL24 Tower Inspection

1 No new information - Council still in negotiation with RFS on access points. 2 Covered in presentation 3 Inspection by CCC held on 27 February 2018 CORRESPONDENCE Item The correspondence was included on the agenda with two additional items: 7/6/18 – Email advising of Radio KOFM carrying out an underground radio show at the mine 15/6/18– PE’s pre-meeting report. MMH enquired about one of the depositional dust readings in the report (Page 3) DG 9 & 10, which were elevated. PE advised that these results were reviewed at the time and determined that it was possibly caused by earthworks on a neighbouring property. CENTENNIAL COAL MANDALONG REPORTS Presentation Comments  A hard copy of the Mandalong Mine Community Consultative Committee Presentation 16 June 2018 was provided to all attendees.  A hard copy of the Mandalong Mine – Land Management Plan (updated 15 June 2018) was provided to all attendees.  Water Quality 2018 – YTD Summary  Water Volume Discharged 2018 YTD  MSSS Sediment Dam Discharge Incident  Nil community complaints – February 2018 to June 2018  Community Sponsorship – February 2018 to June 2018  Mining Update: *LW23 finished in March *LW24 commenced in April and planned to complete in August *LW24 currently under Mandalong Rd *LW24A scheduled to be extracted from Sept 2018 to Jan 2019 *LW25 to commence in February 2019 *Maingate 24 nearing completion *Maingate 25 and Tailgate 25 continuing for LW25 Questions were asked and answered throughout the presentation. Self-report to EPA; tankers used to stop the

discharge. Capacity in dam has been increased.

TC asked what species of trees were planted at the front entrance? Action: PC to advise TC asked if there was any exceedance with mine subsidence in LW23 than what was modelled. PE

SLIDE 3

Centennial Coal Community Consultative Committee Meeting Minutes – 19 June 2018

*Mains development roadways for Maingate 26.  Exploration  LW24 Update  LW24A Preview  Ponding and Dam Rehabilitation  Extraction Plan LW25-31  Access Road and MSSS (PC explained the locations of the first shaft, the spillway and that rainwater will be collected and reused for the drilling shafts)  Shaft Sinking (detailed description provided by PC on how this system will be constructed and operated. Drilling at approximately 4m per day, which means works for first shaft should finish in August 2019)  TransGrid – TL24 relocation (is connected and energised)  TL24 towers (stringing photographs and description of the process)  Ausgrid – 33kV Power Line Project (previously predicted that 20 hectares would be cleared, however, now only 12)  TL25/26 Subsidence Mitigation (process has commenced with TransGrid)  Traffic Data (PC advised that the variable messaging sign was vandalised by being burnt down. A permanent sign will be erected). advised that all private properties were well within predictions. Meetings & discussions have been held with all landowners to consider subsidence. Action: It was suggested that an inspection of the shaft construction site be undertaken by CCC members prior to the commencement of next meeting. TBC. TC advised the committee of two RFS trucks colliding. GENERAL BUSINESS Nil

SLIDE 4

Centennial Coal Community Consultative Committee Meeting Minutes – 19 June 2018

ACTION LOG CURRENT ACTIONS ACTION NO: TOPIC ACTION WHO WHEN STATUS 25.10.16 - 5 RFS land transfer Cr Belcher to advise progress

f land transfer and advise

CCC. Cr Belcher By next meeting Update: 13/6/18 Council still in negotiation with RFS

n access points.

19.6.18 – 1 Tree Species TC asked what species of trees had been planted at the front entrance to the mine site PC By next meeting 19.6.18 – 2 Inspection of Shaft Inspection prior to the next CCC meeting PC/MMH Prior to next meeting MEETING CLOSED 5.10PM MMH thanked all for their attendance. NEXT MEETING  Tuesday 23 October 2018 An inspection of the new shaft prior to CCC

meeting. Details to be confirmed.

LIST OF TABLED ITEMS AS ATTACHMENTS TO MINUTES Centennial Coal Community Consultative Committee Mine Update –Presentation and Land Management Plan Centennial Coal

SLIDE 5

www.centennialcoal.com.au

Mandalong Mine Community Consultative Committee

APP179211

19 June 2018

SLIDE 6

Water Quality 2018 – YTD Summary

Average Water Quality Monitoring Required by EPL 365 2018 Period pH (6.5-8.5) TSS (mg/L) (50mg/L) Oil & Grease (mg/L) (10mg/L) LDP001 7.80 2.90 Average Water Quality Monitoring Required by EPL 365 2018 Period pH (6.5-8.5) TSS (mg/L) (50mg/L) Oil & Grease (mg/L) (10mg/L) LDP002 N/A N/A N/A

SLIDE 7

Water Volume Discharged 2018 YTD

Average daily discharge of 2.10ML per day. No exceedances of

5ML/day discharge volume limit in 2018 to date.

Average Water Quality Monitoring Required by EPL 365 Daily discharge Min Discharge (ML/day ) Average Discharge (ML/day) Maximum Discharge (ML/day) LDP 001 2.10 2.5

SLIDE 8

MSSS Sediment Dam Discharge Incident

A 78mm rainfall event was recorded on 26/2/18 at the Mandalong

South Surface Site (MSSS) which resulted in a turbid discharge event from the Sediment Basin.

The regulatory authorities were immediately notified of the incident

in accordance with the Pollution Incident Response Management

Plan. EPA attended the site on 26/2/18.
Flocculent dosing was undertaken to reduce the suspended solids

load in the MSSS Sediment Basin. An irrigation system and evaporator cannons were installed at the MSSS following the discharge event to reduce water levels in the Sediment Basin.

No further discharges have occurred since 26 February 2018.

SLIDE 9

Community Complaints February 2018 to June 2018

There were no community complaints received since the previous

meeting.

SLIDE 10

Community Sponsorship February 2018 – June 2018

Cooranbong Pre-School;
MCA 2018 sponsorship;
Newcastle Variety Bash;
Morisset United Soccer Club;
Morisset Rotary Golf Day;
Cooranbong Markets;
PCYC Morisset Film Making Workshop;
Mandalong Stock Feeds – Chris O’Brien Lifehouse; and
Watagan Mountains Campdraft Event.

SLIDE 11

Mining Update

LW23 finished in March.
LW24 commenced in April and

planned to complete in August.

LW24 currently under

Mandalong Rd.

LW24A scheduled to be

extracted from September to January 2019.

LW25 to commence in

February 2019.

Maingate 24A nearing

completion.

Maingate 25 and Tailgate 25

continuing for LW25.

Mains developing roadways for

Maingate 26.

SLIDE 12

Exploration

Surface borehole exploration has continued and is

focusing on the extent of sill within Mandalong South (LW25 onwards) and for coal quality.

Three holes completed at end of LW25-28 to define sill.
One coal quality borehole completed over LW25.
Currently setting up to drill coal quality borehole over

LW27.

The next boreholes will target seam split along main

headings and definition of the sill from LW32 onwards.

Access Agreements and Occupational permits in place.
Exploration program will continue throughout 2018.

SLIDE 13

LW24 Update

Extraction Plan LW24-24A approved by DPE on 6/2/18
LW24 length is 2200m. The LW has 900m to finish
14 private properties and 2 dwellings over longwall
Completed subsidence on 1 dwelling – no reported damage
Tobins Rd – no impact to pavement
Mandalong Rd and Chapman Rd – currently being undermined
Telstra phone lines – Copper and inactive optical fibre cables

– No interruption or damaged reported to date

Ausgrid 11kV powerline – no observed impact from subsidence
Tobins Creek – No impact recorded during floodpath inspections
Morans Creek
TransGrid 330kV TL24 Towers 46
Heritage – 1 scarred tree
Remnant ponding – three potential sites

SLIDE 14

LW24A Preview

LW24A length to be determined by sill – inseam drilling

and development ongoing

Same infrastructure as LW24
7 private properties and two dwellings affected
Mandalong Rd and Little Valley Rd
Ausgrid Powerlines
Telstra copper cables
TransGrid TL24 Tower 45
Morans Creek
No remnant ponding expected

SLIDE 15

Ponding and Dam Rehabilitation

Completed works on farm dam located over LW21

– Constructed drainage line to restore dam catchment. – Assisted landowner with cleaning dam.

Completed works on a farm dam located over LW22

– Fixed minor leak – Adjusted dam overflow – Constructed swale drain to increased dam catchment area.

Ponding in paddock located over LW23

– Proposed to fill ponded area with topsoil

SLIDE 16

Extraction Plan LW25-31

Currently preparing Extraction Plan for

LW25-31.

Subsidence Predictions prepared by

DgS.

PSMP being developed with

landowners.

Landowner Access Agreements in

place to conduct PSMP and environmental studies.

Majority of dwelling structural

inspections completed.

Environment Management Plans

including Biodiversity, Water & Heritage provided to govt. depts. and stakeholders for consultation.

Flood modelling assessment report

being finalised.

Currently preparing infrastructure

management plans.

DPE approval required for LW25 start

in February 2019.

SLIDE 17

Access Road and MSSS

First shaft will be drilled

n this pad

SLIDE 18

Shaft Sinking

SLIDE 19

Shaft Sinking

SLIDE 20

TransGrid – TL24 relocation

Zinfra started work in October 2017

and work is progressing to schedule.

Construction work on the eight new

towers (33X – 40X) is completed.

Stringing is completed and the new

line is energised.

Decommissioning and removal of

redundant line and towers (shown in green) started this week and is expected to take two months.

SLIDE 21

TL24 Towers

Using a crane to build the towers

SLIDE 22

TL24 Stringing

Using a helicopter to string the new line

SLIDE 23

TL24 Stringing

Using a basket to fit the spacers

SLIDE 24

CCC Visit

SLIDE 25

Ausgrid – 33kV Power Line Project

Numerous changes to design to reduce

required clearing.

Design to be reviewed by Ausgrid.
Additional flora surveys conducted in

February, March, April and May 2018.

Heritage assessment conducted in March

and April 2018.

Other assessments are in progress.
Additional geotechnical drilling at pole

locations planned for Q3 2018.

Consultation with landowners is continuing.
Targeting construction commencement Q2

2019.

SLIDE 26

TL25/26 Subsidence Mitigation

SLIDE 27

Traffic Data

SLIDE 28

Thank You

SLIDE 29

Pre-Meeting Report

Community Consultative Committee Mandalong Mine 19 June 2018

SLIDE 30

Mandalong Mine CCC Pre-Meeting Report – June 2018

Table of Contents

1 CURRENT MINING STATUS ...................................................................................................................... 1 1.1 LONGWALL ................................................................................................................................................... 1 1.2 DEVELOPMENT .............................................................................................................................................. 2 2 EXPLORATION ......................................................................................................................................... 2 3 ENVIRONMENTAL MONITORING ............................................................................................................. 2 3.1 AIR QUALITY MONITORING ............................................................................................................................. 2 3.2 SURFACE WATER QUALITY MONITORING UPDATE ............................................................................................... 3 3.3 GROUNDWATER MONITORING UPDATE ............................................................................................................. 8 4 PLANNING APPROVALS ......................................................................................................................... 11 4.1 MANDALONG SOUTHERN EXTENSION PROJECT .................................................................................................. 11 4.2 TRANSGRID TL24 RELOCATION PROJECT ......................................................................................................... 11 4.3 33 KV POWERLINE TO MSSS ......................................................................................................................... 12 4.4 TRANSGRID TL24 MITIGATION WORKS ........................................................................................................... 12 4.5 TRANSGRID TL25/26 MITIGATION WORKS ..................................................................................................... 12 5 COMMUNITY CONTACTS ....................................................................................................................... 12 5.1 MANDALONG.............................................................................................................................................. 12 5.1.1 Mining Notifications ...................................................................................................................... 12 5.1.2 Consultation .................................................................................................................................. 12 5.2 MANDALONG SOUTH ................................................................................................................................... 13 5.3 COMPLAINTS .............................................................................................................................................. 13 5.4 SPONSORSHIP ............................................................................................................................................. 13 6 LAND MANAGEMENT ............................................................................................................................ 13 6.1 MANDALONG PROPERTIES ............................................................................................................................. 13 6.2 PROPERTY SALE ........................................................................................................................................... 13

List of Figures

FIGURE 1 - MINE PLAN AND SURFACE FEATURES. ............................................................................................................... 1 FIGURE 2 - ROLLING ANNUAL AVERAGE DUST DEPOSITION .................................................................................................. 3 FIGURE 3 - SURFACE WATER PH RESULTS ......................................................................................................................... 4 FIGURE 4 - SURFACE WATER TSS RESULTS ....................................................................................................................... 5 FIGURE 5 - SURFACE WATER OIL & GREASE RESULTS.......................................................................................................... 5 FIGURE 6 - GROUND WATER DEPTH ................................................................................................................................ 8 FIGURE 7 - GROUNDWATER PH ...................................................................................................................................... 9 FIGURE 8 - GROUNDWATER ELECTRICAL CONDUCTIVITY ...................................................................................................... 9 FIGURE 9 – GROUNDWATER BORE LOCATIONS ................................................................................................................ 10

List of Tables

TABLE 1- DEPOSITIONAL DUST ....................................................................................................................................... 2 TABLE 2 - LDP001 DAILY SAMPLING RESULTS ................................................................................................................... 3 TABLE 3 - LDP002 DAILY SAMPLING RESULTS ................................................................................................................... 4 TABLE 4 - LDP001 MONTHLY SAMPLING RESULTS ............................................................................................................. 6 i | P a g e

SLIDE 31

Mandalong Mine CCC Pre-Meeting Report – June 2018

1 Current Mining Status

1.1 Longwall

Longwall 23 commenced in October 2017 and finished in late March this year. Longwall 24 then commenced operation in mid April and mining is expected to be completed during August. Longwall 24A is scheduled to commence in September and be completed by early January 2019. This will complete mining in the current mining area before moving to Longwall 25 in the Mandalong Southern Extension Area as shown in Figure 1. Figure 1 - Mine Plan and Surface Features.

1 | P a g e

SLIDE 32

Mandalong Mine CCC Pre-Meeting Report – June 2018

1.2 Development

Maingate 24A development is nearing the end of Longwall 24A planned length, while Maingate 25 and Tailgate 25 are continuing the development for Longwall 25. The Main Headings have advanced and are currently preparing the roadways for the commencement of Maingate 26 as shown in Figure 1.

2 Exploration

Surface borehole exploration is still in progress within Olney State Forest and is focusing on defining the location the sill near the end of Longwalls 25 to 29 and infill holes for coal quality and geotechnical information. Four boreholes have been completed in this area and another four are planned.

3 Environmental Monitoring

Environmental monitoring has continued at Mandalong, Mandalong South, Cooranbong and Delta as required by the Environmental Protection Licence (EPL 365) and Development Consents DA 97/800, SSD-5144 and SSD-5145. A summary and review of the monitoring results will be presented at the CCC meeting.

3.1 Air Quality Monitoring

The air quality monitoring results for the reporting period and year to date are summarised below. Depositional dust (g/m2/month) results (insoluble solids) are shown in Table 1. Table 1- Depositional Dust

Licensee: Mandalong Data Sampled: 20/4/2018 - 20/05/2018 Address: Data Obtained: 4/6/18 EPL No. 365

Jun- 17 Jul- 17 Aug- 17 Sep- 17 Oct- 17 Nov- 17 Dec- 17 Jan- 18 Feb- 18 Mar- 18 Apr- 18 May- 18 DG4 0.6 * 0.4 0.4 1.0 4.8 0.6 1.0 0.8 0.5 5.5 0.3 DG6 0.3 0.2 0.4 0.6 0.5 1.1 2.5 2.1 0.8 1.8 2.0 0.2 DG8 0.2 0.2 0.5 0.6 0.4 0.6 0.6 0.8 0.5 0.9 0.4 0.4 DG9 0.5 0.3 0.6 1.4 0.9 1.9 2.6 0.7 0.5 4.7 2.0 0.5 DG10 1.6 1.0 1.4 2.1 0.8 1.2 2.0 4.0 1.4 8.0 1.4 1.2 DG12 0.4 0.3 0.3 0.7 1.2 1.3 1.3 DG14 2.6 2.9 0.3 0.5 0.5 1.3 1.9 0.6 0.3 * * * Delta 1 0.5 0.1 0.3 0.4 0.3 0.5 0.2 0.7 0.3 0.6 0.5 0.4 Delta 2 0.5 0.2 0.6 0.5 0.7 0.6 2.8 1.5 0.4 0.5 1.0 0.7 Delta 3 0.7 0.3 0.6 0.5 0.2 0.2 0.5 1.6 0.3 2.0 1.6 0.3

DG – Dust Gauge *Results excluded due to contamination / damage.

Depositional dust monitoring data indicates that dust deposition results for May 2018 range from 0.2 g/m2/mth to 1.3 g/m2/mth. The rolling annual averages for each of the dust gauges to May 2018 are shown in Figure 2. All rolling annual averages are below the 4 g/m2/month criteria.

2 | P a g e

SLIDE 33

Mandalong Mine CCC Pre-Meeting Report – June 2018

Figure 2 - Rolling Annual Average Dust Deposition

3.2 Surface Water Quality Monitoring Update

The following parameters, pH, Total Suspended Solids (TSS mg/L), Electrical Conductivity (EC µs/cm) and Oil and Grease (mg/L) are monitored at Licenced Discharge Point LDP001 and LDP002 daily during discharge in accordance with the requirements of Environmental Protection Licence 365. Table 2 and Table 3 show a summary of these results, whilst Figure 3 to Figure 5 are graphical

representations. Additional pollutants are required to be monitored monthly during discharge;

these results can be found in Table 4. Table 2 - LDP001 Daily Sampling results

Data Published: 14/06/2018 Licensee: Mandalong Data Sampled: 1/5/18 – 31/5/18 Address: Data Obtained: 04/06/2018 EPL No. 365 Pollutant Units of measure Monitoring frequency required by licence

No. of times

measured during month

Min. value

Max. value 100 percentile limit Exceedance (yes/no) Oil & Grease mg/L 29 32 4 10 No pH pH 29 32 7.71 8.20 6.5-8.5 No Total Suspended Solids mg/L 29 32 0.00 14.00 50 No

There were no discharges from LDP002 in May 2018 as shown in Table 3.

3 | P a g e

SLIDE 34

Mandalong Mine CCC Pre-Meeting Report – June 2018

Table 3 - LDP002 Daily Sampling results

Data Published: 14/6/2018 Licensee: Mandalong Data Sampled: 1/5/18 – 31/5/18 Address: Data Obtained: 01/06/18 EPL No. 365 Pollutant Units of measure Monitoring frequency by licence

No. of times

measured during month

Min. value

Max. value 100 percentile limit Exceedance (yes/no) Oil & Grease mg/L

No pH pH

6.5-8.5

No Total Suspended Solids mg/L

Figure 3 - Surface Water pH Results

4 | P a g e

SLIDE 35

Mandalong Mine CCC Pre-Meeting Report – June 2018

Figure 4 - Surface Water TSS Results Figure 5 - Surface Water Oil & Grease Results

2 4 6 8 10 12 01-May-18 03-May-18 05-May-18 07-May-18 09-May-18 11-May-18 13-May-18 15-May-18 17-May-18 19-May-18 21-May-18 23-May-18 25-May-18 27-May-18 29-May-18 Oil & Grease (mg/L) LDP001 and LDP002 Oil & Grease LDP001 Oil & Grease Limit LDP002 5 | P a g e

SLIDE 36

Mandalong Mine CCC Pre-Meeting Report – June 2018

Table 4 - LDP001 Monthly Sampling Results

Data Published: 14/06/2018 Licensee: Mandalong Data Sampled: 01/05/18 – 31/05/18 Address: Data Obtained: 04/06/2018 EPL No. 365 Pollutant Units of measure Monitoring frequency required by licence

No. of times

measured during month

Min. value

Mean value

Max. value

Aluminium (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Aluminium (Total) µg/L

1 2 <LOR <LOR <LOR

Antimony µg/L

1 2 <LOR <LOR <LOR

Arsenic (Dissolved) µg/L

1 2 2 3 4

Arsenic (Total) µg/L

1 2 3 3.5 4

Barium µg/L

1 2 158 167 176

Beryillium (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Beryillium (Total) µg/L

1 2 <LOR <LOR <LOR

Boron µg/L

1 2 230 230 230

Cadmium (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Cadmium (Total) µg/L

1 2 <LOR <LOR <LOR

Calcium µg/L

1 2 43000 44000 45000

Chromium (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Chromium (Total) µg/L

1 2 <LOR <LOR <LOR

Cobalt (Dissolved) µg/L

1 2 2 2 2

Cobalt (Total) µg/L

1 2 2 2.5 3

Conductivity µS/cm

29 31 3810 3949 4360

Copper (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Copper (Total) µg/L

1 2 <LOR 12.5 25

Iron (Filt) µg/L

1 2 140 655 1170

Lead (Total) µg/L

1 2 <LOR <LOR <LOR

Lead (dissolved) µg/L

1 2 <LOR <LOR <LOR

Lithium µg/L

1 2 154 154 154

Magnesium µg/L

1 2 36000 37000 38000

Manganese (Filt) µg/L

1 2 38 40 42

Mercury (Total) µg/L

1 2 <LOR <LOR <LOR

Mercury (dissolved) µg/L

1 2 <LOR <LOR <LOR

Molybdemon (Dissolved) µg/L

1 2 43 43.5 44

Molybdemon (Total) µg/L

1 2 51 52.5 54

Nickel (Dissolved) µg/L

1 2 48 49.5 51

Nickel (Total) µg/L

1 2 50 51 52

Phosphorous (Total) µg/L

1 2 <LOR <LOR <LOR

Potassium ug/L

1 2 15000 15000 15000

Selenium (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Selenium (Total) µg/L

1 2 <LOR <LOR <LOR

Silica µg/L

1 2 14800 14850 14900 6 | P a g e

SLIDE 37

Mandalong Mine CCC Pre-Meeting Report – June 2018

Data Published: 14/06/2018 Licensee: Mandalong Data Sampled: 01/05/18 – 31/05/18 Address: Data Obtained: 04/06/2018 EPL No. 365 Pollutant Units of measure Monitoring frequency required by licence

No. of times

measured during month

Min. value

Mean value

Max. value

Silver µg/L

1 2 <LOR <LOR <LOR

Silver (dissolved) µg/L

1 2 <LOR <LOR <LOR

Sodium µg/L

1 2 886000 891000 896000

Sulfur µg/L

1 2 30000 30000 30000

Tin µg/L

1 2 <LOR <LOR <LOR

Titanium µg/L

1 2 <LOR <LOR <LOR

Vanadium (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Vanadium (Total) µg/L

1 2 <LOR <LOR <LOR

Zinc (Dissolved) µg/L

1 2 <LOR <LOR <LOR

Zinc (Total) µg/L

1 2 <LOR 11.5 23

NOTE: <LOR means less than Limit of Reporting.

7 | P a g e

SLIDE 38

Mandalong Mine CCC Pre-Meeting Report – June 2018

3.3 Groundwater Monitoring Update

A graphical summary of groundwater levels, pH and electrical conductivity from the groundwater monitoring bores (BH01 - BH27C and MSGW01 – MSGW04C) for the monitoring period and year to date are shown in the following figures. Figure 6 - Ground Water Depth

11 31 30 May 17 19 Jul 17 7 Sep 17 27 Oct 17 16 Dec 17 4 Feb 18 26 Mar 18 Water Level

Water Level

BH01 BH02A BH03 BH03A BH03B BH04 BH05 BH06A BH07B BH09 BH09A BH09B BH10 BH10A BH10B BH11 BH12 BH13 BH14 BH20 BH21 BH23A BH24A BH24B BH24C BH25A BH25B BH25C BH26A BH26B BH26C BH27B GW078043 MSGW01 MSGW03A MSGW03B MSGW03C MSGW04A MSGW04B MSGW04C 8 | P a g e

SLIDE 39

Mandalong Mine CCC Pre-Meeting Report – June 2018

Figure 7 - Groundwater pH Figure 8 - Groundwater Electrical Conductivity

1 2 3 4 5 6 7 8 9 10 pH Units

pH (Field)

BH01 BH02A BH03 BH03A BH03B BH04 BH05 BH06A BH07B BH09 BH10 BH10A BH11 BH12 BH13 BH14 BH20 BH21 BH23 BH23A BH24A BH25A BH25B BH25C BH26A BH26B GW078043 MSGW01 MSGW03A MSGW03B MSGW04A MSGW04B

5000 10000 15000 20000 25000 30000 µS/cm

Electrical conductivity (field)

BH01 BH02A BH03 BH03A BH03B BH04 BH05 BH06A BH07B BH09 BH10 BH10A BH11 BH12 BH13 BH14 BH20 BH21 BH23 BH23A BH24A BH25A BH25B BH25C BH26A BH26B GW078043 MSGW01 MSGW03A MSGW03B MSGW04A MSGW04B 9 | P a g e

SLIDE 40

Mandalong Mine CCC Pre-Meeting Report – June 2018

Figure 9 – Groundwater Bore Locations

10 | P a g e

SLIDE 41

Mandalong Mine CCC Pre-Meeting Report – June 2018

4 Planning Approvals

4.1 Mandalong Southern Extension Project

The Mandalong Road pavement has continued to be monitored during the period with two reports made to LMCC since the last meeting. These were regarding potholes around the intersection with Browns Road. LMCC responded within a couple of days of filing the reports. The tender for the ventilation shafts has been awarded to Abergeldie. It is expected that Abergeldie will mobilise on the 23/7/18. The return shaft at a finished diameter of 5.5m will be drilled first. Site works for the remainder of 2018 will be:

Set up office and noise barrier (Jul/Aug);
Construct pre-sink (Aug);
Drill grout curtain (Aug);
Set up water treatment plant and 10 ML tank (Sep);
Set up drill rig (Sep/Oct);
Set up liner fabrication (Oct)
Commence moving material from existing stockpile to Newstan (6000m3); and
Commence drilling (Nov).

A site inspection was undertaken by the Resources Regulator in May 2018 at the Mandalong South Surface Site with particular focus on sediment control and topsoil management. Rehabilitation works are continuing with additional mulching and tree planting on disturbed areas and at the entrance gate. Due diligence work completed for noise and air quality that will be used in the tender for the ventilation fans.

4.2 TransGrid TL24 Relocation Project

TransGrid’s Principal Contractor, Zinfra, have been working on site since November 2017 and the program is on schedule. All eight of the new towers have been constructed, stringing is completed and the new line has been energised successfully. For safety reasons, most of the stringing was required to be done with the transmission line turned

ff. These outages are arranged on the weekends when the load on the line is less, to minimise

potential disruption to power supply. Therefore, TransGrid had to work on two weekends outside of normal construction hours (as allowed in the modification to the Development Consent). They also had to use a helicopter on a number of stringing days and were forced to change the helicopter schedule due to high wind. During this time notifications were sent out and close neighbours kept up to date with changing plans. One resident reported annoyance at the weekend work and a noise barrier was set up in front of a generator to reduce the level of noise at their house which was effective. Now there are 12 towers to be decommissioned and removed and the redundant easement will be relinquished by TransGrid to the landowners. The decommissioning and removal commenced on 18th June and is expected to take approximately two months.

11 | P a g e

SLIDE 42

Mandalong Mine CCC Pre-Meeting Report – June 2018

The requirement for working outside of normal construction hours has now passed, however a helicopter will be used to remove redundant towers during decommissioning of the old section of

line. Notifications will be sent out notifying residents of helicopter use.

4.3 33 kV Powerline to MSSS

Downer Engineering has now completed its design of the power line route and associated easement and clearing required. The design will now be sent to Ausgrid for their review. Ecology surveys were completed in May, and a heritage survey was conducted in March and April with representatives from four registered Aboriginal parties attending the survey. Other assessments will now continue with the revised design and a statement of environmental effects prepared.

4.4 TransGrid TL24 Mitigation Works

Mitigation works to retrofit concrete cruciform footings on TL24 Towers 45, 46 and 47 located over Longwalls 22 to 24A was completed in July 2017. Full subsidence at Towers 47, located above Longwall 22 has now been completed. Subsidence was within prediction and there was no observed impact to the tower. Tower 46 is located over Longwall 24 and will be mined beneath in during

August. Tower 45 is located over Longwall 24A and will be mined beneath during December this

year.

4.5 TransGrid TL25/26 Mitigation Works

This month TransGrid will commenced a feasibility study into potential subsidence impacts to TL25/26 Towers 39 – 47. It is expected that some of the towers will require cruciform footings similar to those constructed on TL24 in 2017.

5 Community Contacts

5.1 Mandalong 5.1.1 Mining Notifications

One month mining notifications for Longwalls 23 and 24 have been provided to landowners, Centennial tenants and infrastructure owners prior to mining beneath their property or asset as per PSMPs and Infrastructure Management Plans.

5.1.2 Consultation

Consultation is ongoing with landowners and infrastructure owners affected by current operations for LW22-23 and LW24-24A Extraction Plans. Consultation for the development of PSMP for Longwalls 25 to 31 Extraction Plan commenced earlier this year and is ongoing.

12 | P a g e

SLIDE 43

Mandalong Mine CCC Pre-Meeting Report – June 2018

5.2 Mandalong South

Various contacts with land holders regarding the construction of the MSSS Access Road, TL24 relocation, 33kV powerline and quarterly noise monitoring occurred at the end of March 2018.

5.3 Complaints

There were no community complaints received since the February 2018 meeting.

5.4 Sponsorship

1. Cooranbong Pre-School;
2. MCA 2018 sponsorship;
3. Newcastle Variety Bash;
4. Morisset United Soccer Club;
5. Morisset Rotary Golf Day;
6. Cooranbong Markets;
7. PCYC Morisset Film Making Workshop;
8. Mandalong Stock Feeds – Chris O’Brien Lifehouse; and
9. Watagan Mountains Campdraft Event.

6 Land Management

6.1 Mandalong Properties

An update of the Summary of Proposed Land Management Activities for 2018 will be provided at the CCC meeting.

6.2 Property Sale

Centennial has sold 555 Mandalong Road this year and a further property along Browns Road will go

n the market in late June 2018. There is an ongoing commitment to sell properties in Mandalong

that are surplus to Centennial’s needs.

13 | P a g e

SLIDE 44

Mandalong Mine – Land Management Plan Summary of Proposed Land Management Activities – January 2017 to June 2018 Updated 15 June 2018 Blue is completed or in progress

Property Address Property Ref No. Riparian & Wetlands Maintenance Weed Maintenance Farm Management 38 Browns Road Hamlets Creek 43 Blackberry control on creek banks Repairs to boundary and internal fences Jan/Feb 2018 Upgrade farm track Feb 2018. Further upgrades in may Repairs to dressage arena and round yard Feb 2018 Fire break maintenance 111/112 Browns Road 40 & 48 Regrowth and blackberry control (land on Western side of Browns Rd) Replace part boundary fence with 544 Mandalong Rd (fence was able to be repaired) Repair boundary fence on northern side of Browns Road. New internal fences on house block 226 Browns Road 21 Check weeds and regrowth in riparian zone – needs an updated plan with new tenants Regrowth and blackberry control Feb / Mar Repair boundary fence/gateway to forest March 2018 230 Browns Road 33 Regrowth and blackberry control Feb / Mar 32-64 Chapman Road Chapman Estate 222 Replace single gateway with Double Gateway 158 Crooks Road 3 Annual Fire break maintenance -June -July 295 Deaves Road American Oak 9 Regrowth and blackberry control Feb Decommission bridge once crossing repaired Following approval of the DA the old cottage has been demolished and removed and the fence upgraded Upgrade to internal fences 323 Deaves Road 7 & 8 Regrowth and blackberry control Fence off cottage (Upgrade existing fence instead of new fence around cottage.) Following approval of the DA the old hostel has been demolished and removed and the fence upgraded 350 Deaves Road 56 Tea Tree control along fence lines. Low priority Minor boundary fence repairs (repaired by tenant) 202 Mandalong Road 4 280 Mandalong Road 182 Mandalong Road 184 Mandalong Road Mandalong Dairy 59 60 1 Complete riparian zone fencing to suit land management land for these blocks. Protecting 3 sites with significant

trees. July

Regrowth and blackberry control -ongoing Ongoing control of thistles, tobacco bush and blackberry along Morans Creek Upgrade entrance to house off Mandalong Rd Upgrade boundary fence with 343 Mandalong Rd 343 Mandalong Road 61 Upgrade boundary fence with Mandalong Dairy 378 Mandalong Road 58 Fence off drain along rear of property Blackberry control -ongoing Boundary fence repairs with 416 Mandalong Rd (repaired by tenant). Investigate replacing

SLIDE 45

Mandalong Mine – Land Management Plan Summary of Proposed Land Management Activities – January 2017 to June 2018 Updated 15 June 2018 Blue is completed or in progress

Property Address Property Ref No. Riparian & Wetlands Maintenance Weed Maintenance Farm Management section in 2018. Repaired front boundary fence. 544 Mandalong Road Lonesome Pine 37 and 49 Blackberry control Jan /Feb Replace boundary with 111 Browns Rd (Fence was repaired) Replace internal fence 555 Mandalong Road SOLD 68 Repair damage to wetland fence by deer and continue to monitor. Property to be Auctioned Regrowth and blackberry control. Dec Replace boundary fence along Mandalong Rd 619 Mandalong Road 70 Blackberry and regrowth control Repairs to access road and associated drainage. Upgrade stock water, relocate fences Repairs to multiple fences/clear fallen trees following significant storm damage Jan 18 Replace part of southern boundary fence 658 Mandalong Road 81 Lantana control Firebreak maintenance in June /July Upgrade front boundary fence as required by land use. 687 Mandalong Road 84 Replace part of eastern boundary fence Replace southern boundary with neighbour 695 Mandalong Road 85 Repair boundary fence on Mandalong Road- started Upgrade access road Replace boundary – eastern and part of

south. Ecological study commenced.

803 Mandalong Road 217 New internal fencing being planned to suit the development of Mandalong South Project. Destocked in Jan 2017 12 Sauls Road 52 & 53 Regrowth and blackberry control Repairs to Dam wall Upgrade access track Feb 2018. Quote pending 27 Sauls Road SOLD 55 Property sold 35 Sauls Road SOLD 54 Property Sold 91 Sauls Road 42 Regrowth and blackberry control Repair boundary fence with 35 Sauls Rd Internal fence repairs started 229 Sauls Road 26 Repairs to erosion above one of the dams. Rearrange fencing to include the old Lodge

SLIDE 46

Mandalong Mine – Land Management Plan Summary of Proposed Land Management Activities – January 2017 to June 2018 Updated 15 June 2018 Blue is completed or in progress

Property Address Property Ref No. Riparian & Wetlands Maintenance Weed Maintenance Farm Management Tallowood Lodge house paddock back into the main farm 232 Sauls Road Gumnut 23 Maintain & upgrade firebreak Sept 2017 Boundary and internal fences repaired Additional fences erected and quantity of fertiliser applied (tenant) 28 Timber Road 50 Regrowth and blackberry control Repairs to boundary fence/entrance on Mandalong Road 37 Tobins Road 75 Blackberry and regrowth control Maintain and upgrade Firebreak Maintenance on dam wall 1 completed, 1 to be done Notes This plan is a guide only and will be affected by the weather and ground conditions. Weed Control Information - Treatment for the following weeds is included in this Schedule. Weed Treatment Period Method of Treatment Blackberry October to March Spraying Tabaco Bush All year Cut & paint or spraying – depending on size Giant Parramatta Grass October to March Spot spray & rotor wipe 2 types of chemical used depending on season Lantana October to March Spraying