Minutes of Centennial Mandalong Community Consultative ...data.centennialcoal.com.au/domino/centennialcoal/cc205.nsf/0... · Flood path inspections have been undertaken of Tobins

1 Centennial Coal Community Consultative Committee Meeting Minutes – 23 October 2018

Minutes of Centennial Mandalong Community Consultative Committee Meeting Held Tuesday 23 October 2018 at Mandalong Mine Training Room

An inspection of the shaft construction site was undertaken at 3.10pm by TC, TJ, MA, PC, PH, MMH & LA.

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) Mandalong Community Association

Angela Besant (AB) Mandalong Community Association

Trevor James (TJ) Mandalong Community

Phil Enright (PE) Centennial Mandalong Pty Ltd

Peter Cook (PC) Centennial Mandalong Pty Ltd

Jeff Dunwoodie (JD) Centennial Mandalong Pty Ltd

IN ATTENDANCE Lisa Andrews (LA) Minute Taker

APOLOGIES Member Organisation

Dr Lynden Rogers (LR) Mandalong Community

Cr David Belcher (DB) Lake Macquarie City Council

WELCOME The Chair welcomed all present and opened the meeting at 4.25pm apologising to JS & AB for the delay in the commencement time.

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.


PREVIOUS MINUTES Minutes Action

The minutes of the previous meeting held on 20 June 2018 were confirmed without change.

Moved: MA Seconded: TC

BUSINESS ARISING Item Action

Business arising from the previous minutes: 1. Rural Fire Shed Land Transfer 2. Shaft Construction Site Inspection. 3. Type of Tree Species planted at the front entrance of the mine

site.

1 MMH contacted DB and LMCC direct. Once a response is received, it will be emailed to CCC members. (Comment: There is speculation

in the community that a new shed is being built in Wyee, which may be financed with Mandalong’s funding allocation. PC will speak to Paul Duncan regarding progress with LMCC to enquire if the project is still on track).

2 Complete - held prior to this meeting. 3 Complete - PC emailed to TC on 28/6/18.

CORRESPONDENCE Item

The correspondence was included on the agenda with one additional item: 22/10/18 - PE’s pre meeting report

CENTENNIAL COAL MANDALONG REPORTS

Presentation Comments

A hard copy of the Mandalong Mine Community Consultative Committee Presentation 23 October 2018 was provided to all attendees.

JD commenced the presentation, providing information on the Water Quality Monitoring for EPL 365 and Water Volume Discharges.

It was noted that there were no community complaints received since the previous meeting (June 2018 – October 2018)

A list of community sponsorships was provided for the same period.

Fund raising BBQs were held for each shift, for the Cancer Council’s Australia’s Biggest Morning Tea campaign and ‘Big Aussie BBQ’ (Prostate Cancer Council of Australia) with approximately $5,000 - $6,000 being raised.

PE provided the Mining Update: o LW24 finished in September

Questions were asked and answered throughout the presentation. Total solids are within licence limits. EPL varied to include new dam discharge point behind workshop and for MSSS Sediment Basin discharge point. Discussions on the activities of the Mandalong Chicken Rescue for caged hens.


o LW24A commenced on 2 October o LW25 to commence in February 2019 o Maingate 25 & Tailgate 25 continuing for LW25 o Faulting encountered in LW25 development o Likely to relocate LW25 around fault zone (leave 100m due

to seam displacement) o Mains completed roadways to start Maingate 26.

Exploration – will continue throughout 2018-2019

Surface borehole exploration has continued with the next series targeting the definition of the sill from LW32 to LW37.

Access agreements for private property and occupational permits for Olney State Forest are in place.

LW24 Review – PE

LW24 length was 2200m with 14 private properties and 2 dwelling above

One dwelling requires repairs after additional subsidence from LW24A

No impact to pavements of Tobins and Mandalong Roads

No interruption to Telstra phone lines reported

No observed impact to Ausgrid 11kV powerline

Flood path inspections have been undertaken of Tobins Creek with Morans Creek to be scheduled. No impact recorded to date.

There was one scarred tree identified.

Remnant ponding has occurred on one site over LW23 and two sites over LW24

Temporary drainage is being undertaken until full subsidence from LW24A

Consulting with landowners and LMCC on investigations and drainage proposals

LW24A Preview

LW24A length was reduced to 1757 due to sill

Commenced 2 October 2018

Extracted 300m to date

7 private properties and two dwellings affected

No remnant ponding directly over LW24A

ACTION: PC to speak with Telstra (Parramatta) regarding possible use of existing cabling to improve internet/mobile reception in Mandalong Valley.


Extraction expected to be completed by January 2019. Extraction Plan LW25-31

Submitted to DPE for approval on 11/10/18

Subsidence predictions prepared by DgS

11 private properties with 6 dwellings affected.

PSMPs provided to all affected landowners

Infrastructure management plans completed in consultation with owners

Environment management plans completed in consultation with government agencies.

DPE approval required for LW25 start in February 2019. TransGrid – TL24 relocation

Stringing and energisation of the new section of line has been completed.

Decommissioning, removal of redundant line and towers together with rehabilitation has been completed

Extinguishment of old easement with TransGrid has commenced. MSSS Shaft Sinking

PC presented on the aerial photos (drone) showing the shaft sinking, 10ML water tank, sediment and erosion controls. He explained the site, construction process and revegetation of the site.

Traffic Data

The graphical information of the total number of heavy vehicle movements along Mandalong road was presented.

With the completion of the TransGrid TL24 relocation, the ZINFRA truck movements will reduce, along with the Daracon trucks due to the finalisation of its project.

Approvals Update

PC provided an update on SSD-5144 (MOD 6) – Mandalong South Surface Site Sediment Dam, to allow for the temporary controlled release of stored water following significant rainfall events.

Also seeking the ability to transport the sediment and material collected to the Cooranbong entry site.

SEE lodged with DPE for it to be placed on public exhibition for 2

Discussion on placing material on the stockpile and reseeding instead of transporting.


weeks.

Received approval for an emergency discharge of water into mine workings, which was treated and released into Muddy Lake.

Modification with DPE is for significant rain events, so it may be discharged into Moran’s Creek. Consulting with landholders along Moran’s Creek to ensure downstream property owners are not impacted.

The proposed MOD is of minimal environmental impact and will remain substantially the same development as originally approved.

Modification 7 – 33kV Transmission Line Project

7.7km of the power line from Mandalong Rd to the MSSS runs along existing 132kV and 330kV power lines.

Since the last meeting, detailed design has been completed and submitted to AusGrid for certification.

All heritage, ecology, visual, noise, air quality, traffic and EMF assessments have been completed.

Open Days were held in September 2018, unfortunately there was a low turnout, however, additional session will be held in November 2018.

SEE drafting has commenced and EPBC Act referral (precautionary) has been made to Commonwealth Dept of the Environment.

Additional geotechnical drilling was completed in October 2018 and easement agreements are to be negotiated with landowners.

Construction is planned for commencement in Q3 2019. LW 32-37

LWs32-37 layout may need to be modified because of the split seam and location of sill.

Currently looking at options and will undertake additional environmental monitoring to supplement those undertaken in 2012. There have been biodiversity legislative changes since this time, so it may take a year or two to evaluate the vegetation, in order to include all seasons.

The same subsidence parameters are expected even though the LW layout may have a different orientation.

ACTION: PE will provide a more detailed presentation at the next CCC.


GENERAL BUSINESS AB heard that hardwood is being brought to the mine from the North Coast. PC advised that Strata Products are purchased from Karuah and used for roof supports. The timber supports do not increase subsidence.

MA enquired whether the company were drilling through the conglomerate seam for the air shaft. PC confirmed that this was to occur. Steel and concrete liners will be grouted into the shafts and ground water is unlikely to get into the mine.

PE advised that he will provide ponding information at the next meeting.

JS left at 5.25pm. ACTION: PE to provide presentation on ponding at next CCC.

MEETING CLOSED 5.33PM As this was the last meeting for 2018; MMH thanked all members for their efforts on the committee and wished them a Merry Christmas and Happy New Year.

MEETING SCHEDULE FOR 2019

It was agreed that the schedule would continue as previously held – three times per year, Dates proposed:

Tuesday 19 February

Tuesday 18th June; and

15 October 2019.

LIST OF TABLED ITEMS AS ATTACHMENTS TO MINUTES

Centennial Coal Community Consultative Committee Mine Update –Presentation Centennial Coal


ACTION LOG

CURRENT ACTIONS

ACTION NO: TOPIC ACTION WHO WHEN STATUS

25.10.16 - 5 RFS land transfer Cr Belcher to advise progress of land transfer and advise CCC.

Cr Belcher MMH/PC

By next meeting asap

Update: 23.10.18 – PC to speak to Paul Duncan re LMCC progress on land dealings for RFS Shed. MMH to email members when further information regarding land transfer is received.

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 Complete - PC emailed to TC on 28/6/18.

23.10.18 – 1 Internet/Mobile reception for residents

Speak with Telstra (Parramatta) regarding possible use of existing cabling to improve internet/mobile reception.

PC By next meeting

23.10.18 - 2 Amendment to layout of LW32-37

Provide a more detailed presentation at the next CCC.

PE At next meeting

23.10.18 -3 Ponding Presentation Provide further information on ponding

PE At next meeting

Pre-Meeting Report

Community Consultative Committee

Mandalong Mine 23 October 2018

Mandalong Mine CCC Pre-Meeting Report – October 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 3.4 NOISE MONITORING UPDATE......................................................................................................................... 11

4 PLANNING APPROVALS ......................................................................................................................... 13

4.1 MANDALONG SOUTHERN EXTENSION PROJECT .................................................................................................. 13 4.2 TRANSGRID TL24 RELOCATION PROJECT ......................................................................................................... 13 4.3 MSSS WATER MANAGEMENT MODIFICATION (MOD 6).................................................................................... 13 4.4 33 KV POWERLINE TO MSSS (MOD 7) .......................................................................................................... 14 4.5 TRANSGRID TL24 MITIGATION WORKS ........................................................................................................... 14 4.6 TRANSGRID TL25/26 MITIGATION WORKS ..................................................................................................... 14

5 COMMUNITY CONTACTS ....................................................................................................................... 14

5.1 MANDALONG.............................................................................................................................................. 14 5.1.1 Mining Notifications ...................................................................................................................... 14 5.1.2 Consultation .................................................................................................................................. 14

5.2 MANDALONG SOUTH ................................................................................................................................... 15 5.3 COMPLAINTS .............................................................................................................................................. 15 5.4 SPONSORSHIP ............................................................................................................................................. 15

6 LAND MANAGEMENT ............................................................................................................................ 15

6.1 MANDALONG PROPERTIES ............................................................................................................................. 15 6.2 PROPERTY SALE ........................................................................................................................................... 15

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 TABLE 5 - OPERATIONAL NOISE COMPLIANCE RESULTS SUMMARY ...................................................................................... 11

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1 Current Mining Status

1.1 Longwall Longwall 24 commenced operation 16 April 2018 and completed extraction on 11 September 2018. Mining recommenced in Longwall 24A on 2 October 2018 is scheduled for completion by early January 2019. This will complete mining and subsidence in the current mining area. Mining will then take place in Longwall 25, which is located within the Mandalong Southern Extension Area as shown in Figure 1. The longwall is scheduled to commence mining during February 2019.

Figure 1 - Mine Plan and Surface Features.

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1.2 Development Maingate 25 and Tailgate 25 are continuing the development for Longwall 25. A fault zone was encountered during the development of these roadways. The Mine is currently evaluating a potential to step the longwall around the faulted zone within Longwall 25. The Main Headings have continued to advanced and have recently completed 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 seam split along the Main Headings. The next series of boreholes will focus on defining the sill over Longwalls 32 to 37.

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 Data Published: 14/10/2018 Licensee: Mandalong Data Sampled: 21/08/2018 - 19/09/2018

Address:

Data Obtained: 6/10/2018 EPL No. 365 Oct-

17 Nov-17

Dec-17 Jan-18 Feb-18 Mar-18

Apr-18 May-18

Jun-18 Jul-18 Aug-18 Sep-18

DG4 1.0 4.8 0.6 1.0 0.8 0.5 5.5 0.3 0.3 0.2 0.4 3.8 DG6 0.5 1.1 2.5 2.1 0.8 1.8 2.0 0.2 1.6 1.3 1.2 1.6 DG8 0.4 0.6 0.6 0.8 0.5 0.9 0.4 0.4 0.2 0.4 0.4 1.1 DG9 0.9 1.9 2.6 0.7 0.5 4.7 2.0 0.5 0.1 0.1 0.3 1.2 DG10 0.8 1.2 2.0 4.0 1.4 8.0 1.4 1.2 1.7 0.2 0.9 2.1 DG12 0.7 1.2 1.3 1.3 0.7 0.3 2.1 1.6 DG14 0.5 1.3 1.9 0.6 0.3 * * * 7.3 1.8 5.1 12.2 Delta 1 (EPL Point 3) 0.3 0.5 0.2 0.7 0.3 0.6 0.5 0.4 0.3 0.2 0.5 0.8

Delta 2 (EPL Point 4) 0.7 0.6 2.8 1.5 0.4 0.5 1.0 0.7 0.6 0.3 0.3 1.2

Delta 3 (EPL Point 5) 0.2 0.2 0.5 1.6 0.3 2.0 1.6 0.3 0.5 0.2 0.5 0.9

DG – Dust Gauge *Results excluded due to contamination / damage. Depositional dust monitoring data indicates that dust deposition results for September 2018 range from 0.8 g/m2/mth to 12.2 g/m2/mth. The rolling annual averages for each of the dust gauges to September 2018 are shown in Figure 2. All rolling annual averages are below the 4 g/m2/month criteria.

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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: 14/10/2018 Licensee: Mandalong Data Sampled: 1/9/18 - 30/9/18 Address:

Data Obtained: 4/10/2018 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 30 31 0 3.00 10 No pH pH 30 31 7.78 8.02 6.5-8.5 No Total Suspended Solids mg/L 30 31 0 14.00 50 No

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

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Table 3 - LDP002 Daily Sampling results Data Published: 14/10/2018 Licensee: Mandalong Data Sampled: 1/9/18 – 30/9/18 Address:




No. of times measured during month Min. value

Max. value

100 percentile limit

Exceedance (yes/no)

Oil & Grease mg/L 0 0 - - 10 No

pH pH 0 0 - - 6.5-8.5 No Total Suspended Solids mg/L 0 0 - - 50 No

Figure 3 - Surface Water pH Results

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Figure 4 - Surface Water TSS Results

Figure 5 - Surface Water Oil & Grease Results

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Table 4 - LDP001 Monthly Sampling Results

Data Published: 14/10/2018 Licensee: Mandalong Data Sampled: 1/9/18 - 30/9/18 Address:




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 10 10 10 Antimony µg/L 1 2 <LOR <LOR <LOR Arsenic (Dissolved) µg/L 1 2 2 2 2 Arsenic (Total) µg/L 1 2 5 5 5 Barium µg/L 1 2 189 190 191 Beryillium (Dissolved) µg/L 1 2 <LOR <LOR <LOR Beryillium (Total) µg/L 1 2 <LOR <LOR <LOR Boron µg/L 1 2 230 235 240 Cadmium (Dissolved) µg/L 1 2 <LOR <LOR <LOR Cadmium (Total) µg/L 1 2 <LOR <LOR <LOR Calcium µg/L 1 2 49000 49500 50000 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 2 Conductivity µS/cm 30 31 3650 3893.22581 4140 Copper (Dissolved) µg/L 1 2 <LOR <LOR <LOR Copper (Total) µg/L 1 2 <LOR <LOR <LOR Iron (Filt) µg/L 1 2 70 75 80 Lead (Total) µg/L 1 2 <LOR <LOR <LOR Lead (dissolved) µg/L 1 2 <LOR <LOR <LOR Lithium µg/L 1 2 161 162.5 164 Magnesium µg/L 1 2 40000 40500 41000 Manganese (Filt) µg/L 1 2 53 53 53 Mercury (Total) µg/L 1 2 <LOR <LOR <LOR Mercury (dissolved) µg/L 1 2 <LOR <LOR <LOR Molybdemon (Dissolved) µg/L 1 2 38 38 38 Molybdemon (Total) µg/L 1 2 42 43 44 Nickel (Dissolved) µg/L 1 2 31 32 33 Nickel (Total) µg/L 1 2 38 38 38 Phosphorous (Total) µg/L 1 2 <LOR <LOR <LOR Potassium ug/L 1 2 16000 16500 17000 Selenium (Dissolved) µg/L 1 2 <LOR <LOR <LOR Selenium (Total) µg/L 1 2 <LOR <LOR <LOR Silica µg/L 1 2 13200 13200 13200 Silver µg/L 1 2 <LOR <LOR <LOR Silver (dissolved) µg/L 1 2 <LOR <LOR <LOR

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Sodium µg/L 1 2 856000 871000 886000 Sulfur µg/L 1 2 35000 35000 35000 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 <LOR <LOR

NOTE: <LOR means less than Limit of Reporting.

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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

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Figure 7 - Groundwater pH

Figure 8 - Groundwater Electrical Conductivity

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Figure 9 – Groundwater Bore Locations

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3.4 Noise Monitoring Update Noise monitoring is undertaken as per the EPL and consent conditions at the Mandalong Mine and Cooranbong Entry Site. Operator attended noise measurements were conducted at the ten (10) focus locations surrounding the operations during the day, evening and night time periods between Monday 25 June and Friday 29 June 2018. Measurements were conducted during worst case operational scenarios for both Mandalong and Cooranbong sites in order to capture associated worst case noise levels. The operator attended noise monitoring results summary presented in Table 5 shows that the noise contributions from Mandalong Mine and Cooranbong Entry Site comply with the EPL 365, Development Consent SSD-5144 and SSD-5145 noise criteria at all monitoring locations and during all time periods. The exceedances of the limit criteria for SSD-5145 and EPL 365 were measured at location M1 during the evening and night time. The operator attended sleep disturbance noise monitoring results summary presented in Table 10 shows that the noise contributions from Mandalong Mine and Cooranbong Entry Site comply with the EPL 365, Development Consent SSD-5144 and SSD-5145 relevant sleep disturbance noise criteria at all monitoring locations. The exceedances of the LA1 limit criteria for SSD-5145 were measured at location M1 and exceedances of EPL 365 were measured at M1 and M8. All exceedances of the limit criteria were recorded under Stability Category G temperature inversion conditions. As specified in condition L5.3 of EPL365, the noise limits do not apply under these conditions. Additional compliance noise monitoring is to be conducted at location M1 during the evening and night period in December 2018. The additional noise monitoring must not be conducted during the meteorological conditions as specified in the EPL 365 condition L5.3.

Table 5 - Operational Noise Compliance Results Summary

Data Published: 14/10/2018 Licensee: Mandalong Data Sampled: 25/06/2018 -29/06/2018 Address: Data Obtained: 2/10/2018 EPL No. 365

Measured Noise Levels dB(A)

Date Day Attended/ Unattended Location LAeq (15

minute) Consent Noise Criteria LAeq (15-minute).

EPL Noise Criteria LAeq (15-minute).

26/06/2018 Daytime Attended M1 <30 36 37 26/06/2018 Evening Attended M1 44 36 37 26/06/2018 Night Attended M1 47 36 37 26/06/2018 Daytime Attended M2 Not Discernible 40 35 26/06/2018 Evening Attended M2 Not Discernible 40 35 26/06/2018 Night Attended M2 <30 40 35 25/06/2018 Daytime Attended M3 Not Discernible 42 35 25/06/2018 Evening Attended M3 Not Discernible 42 35 28/06/2018 Night Attended M3 <30 42 35 25/06/2018 Daytime Attended M4 Not Discernible 39 37 25/06/2018 Evening Attended M4 <30 39 37

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Data Published: 14/10/2018 Licensee: Mandalong Data Sampled: 25/06/2018 -29/06/2018 Address: Data Obtained: 2/10/2018 EPL No. 365

Measured Noise Levels dB(A)

Date Day Attended/ Unattended Location LAeq (15

minute) Consent Noise Criteria LAeq (15-minute).

EPL Noise Criteria LAeq (15-minute).

28/06/2018 Night Attended M4 <30 39 37 25/06/2018 Daytime Attended M5 33 41 35 26/06/2018 Evening Attended M5 <30 41 35 28/06/2018 Night Attended M5 <30 41 35 25/06/2018 Daytime Attended M6 Not Discernible 40 36 26/06/2018 Evening Attended M6 Not Discernible 40 36 28/06/2018 Night Attended M6 <30 40 36 25/06/2018 Daytime Attended M7 35 43 40 26/06/2018 Evening Attended M7 35 43 40 29/06/2018 Night Attended M7 35 43 40 25/06/2018 Daytime Attended M8 36 43 43 26/06/2018 Evening Attended M8 36 43 43 26/06/2018 Night Attended M8 36 43 43 25/06/2018 Daytime Attended M9 32 42 40 26/06/2018 Evening Attended M9 32 42 40 26/06/2018 Night Attended M9 32 42 40 25/06/2018 Daytime Attended M10 34 39 41 26/06/2018 Evening Attended M10 34 39 41 25/06/2018 Night Attended M10 34 39 42

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4 Planning Approvals

4.1 Mandalong Southern Extension Project The Mandalong Road pavement has continued to be monitored during the period. No reports have been submitted to LMCC, but the potholes around the intersection with Browns Road have opened up again. Abergeldie mobilised at the end of July 2018. Site works completed to date are:

• Set up office; • Noise barrier posts installed; • Completed pre-sink to 9m deep; • Set up liner fabrication; • Commenced moving material from existing stockpile to Newstan (700 of 6000m3); and • Drill rig components transported to site.

Planned work for the remainder of the year:

• Ring beam and slab for Shaft #1; • Grout curtain for both shafts; • Set up water treatment plant and 10 ML tank; • Shaft #2 pre-sink and slab; • Set up drill rig; • Commence drilling; and • Commence liner fabrication.

Rehabilitation works are continuing with re-spraying of some batters as very little establishment of vegetation in last 4 months. Ventilation fans and 33/11 kV sub-station tenders in progress.

4.2 TransGrid TL24 Relocation Project TransGrid’s Principal Contractor, Zinfra, has completed the dismantling and rehabilitation works on the private properties. Extinguishment of the titles is underway. Zinfra and TransGrid have demobilised from site and the project is complete.

4.3 MSSS Water Management Modification (MOD 6) Centennial Mandalong is seeking a modification to Development Consent SSD-5144 to allow for the short-term controlled release of stored water from the Mandalong South Surface Site (MSSS) Sediment Dam following significant rainfall events into the unnamed creek that flows into the upper reaches of Morans Creek. It is intended to redirect this water to the underground workings in the long term once they reach the area below the MSSS and the required infrastructure has been installed. Additionally, Centennial Mandalong is seeking the ability to transport the sediment and material collected at the MSSS to the Cooranbong Entry Site. All wet material will be transported using a fully

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contained vacuum truck to avoid spillage. Once at the Cooranbong Entry Site, the material will be stockpiled on the 1,500 tonne coal stockpile and managed in accordance with the coal handling system approved by the Northern Coal Logistics Project (SSD-5145). A Statement of Environmental Effects (SEE) for the MSSS water management modification will be submitted to the Department of Planning & Environment in October 2018 and will be publically available on the Department’s website.

4.4 33 kV Powerline to MSSS (MOD 7) All proposed disturbance areas have been re-surveyed for tetratheca juncea as this is peak flowering period. No additional specimens were found. A referral has been made to the Commonwealth Department of Environment. A Statement of Environmental Effects is being drafted based on the outcomes of the technical specialist assessments, which are 80% complete. This will be lodged with the NSW Department of Planning and Environment once complete. Two open days were held in September for the Project and 4 residents attended.

4.5 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 Tower 47 (Longwall 22) and Tower 46 (Longwall 23) has now been completed. Subsidence was within prediction and there was no observed impact to the towers. Tower 45 is located over Longwall 24A and will be mined beneath during December this year.

4.6 TransGrid TL25/26 Mitigation Works TransGrid has completed a feasibility study into potential subsidence impacts to TL25/26 Towers 39 – 47. A report has been provided and is to be reviewed by Centennial Mandalong over the coming 2 weeks. It is expected that a design phase will commence shortly thereafter.

5 Community Contacts

5.1 Mandalong

5.1.1 Mining Notifications One month mining notifications for Longwalls 24 and 24A 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.

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Consultation for the development of PSMPs for Longwalls 25 to 31 Extraction Plan has been ongoing this year, with final PSMPs provided to affected landowners in early October, prior to submitting the Extraction Plan to the Department of Planning and Environment.

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 June and September 2018. The 33kV open days were held as noted above.

5.3 Complaints There were no community complaints received since the June 2018 meeting.

5.4 Sponsorship 1. Cooranbong Pre-School; 2. Morisset Pro-Am Golf Tournament; 3. Heritage College Morisset Spring Fair; 4. Emerald Park Equine Drought Support; 5. Wyee Public School Fete; 6. Mindaribba Warriors Rugby League Team; 7. Morisset Public School Raffle; 8. Mandalong Chicken Rescue; 9. Wallsend Hockey Club; and 10. Wyee Rural Fire Service.

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 recently sold the property at 38 Browns Road and is currently reviewing the property disposal schedule for 2019.

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www.centennialcoal.com.au

Mandalong Mine Community Consultative Committee

APP188860

23 October 2018

Water Quality 2018 – YTD Summary

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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 7.83 3.64 0


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

Water Volume Discharged 2018 YTD

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• Average daily discharge of 2.10ML per day. • No exceedances of 5ML/day discharge volume limit in 2018 to date.


Daily discharge Min Discharge (ML/day )

Average Discharge (ML/day)

Maximum Discharge (ML/day)

LDP 001 0 2.10 2.5

Community Complaints June 2018 to October 2018

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• There were no community complaints received since the previous meeting.

Community Sponsorship June 2018 – October 2018

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• Cooranbong Pre-School; • Morisset Pro-Am Golf Tournament; • Heritage College Morisset Spring Fair; • Emerald Park Equine Drought Support; • Wyee Public School Fete; • Mindaribba Warriors Rugby League Team; • Morisset Public School Raffle; • Mandalong Chicken Rescue; • Wallsend Hockey Club; and • Wyee Rural Fire Service.

Mining Update

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• LW24 finished in September. • LW24A commenced on 2

October . • LW25 to commence in

February 2019. • Maingate 25 and Tailgate 25

continuing for LW25. • Faulting encountered in

LW25 development • Likely to relocate LW25

around fault zone. • Mains completed roadways to

start Maingate 26.

Exploration

• Surface borehole exploration has continued and is currently focusing on delineating the seam split along the main headings from LW32 onwards.

• The next series of boreholes will target the definition of the sill from LW32 to LW37.

• Access Agreements for private property and Occupational Permits for Olney State Forest are in place.

• Exploration program will continue throughout 2018 and 2019.

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LW24 Review

• LW24 length was 2200m • 14 private properties and 2 dwellings over longwall • One dwelling requires repairs after additional subsidence from LW24A. • Tobins Rd and Mandalong Rd – no impact to pavement • Telstra phone lines (copper and inactive optical fibre cables)

– No interruption reported to date • Ausgrid 11kV powerline – no observed impact • Tobins Creek – No impact recorded during flood path inspections to date • Morans Creeks – flood path inspections scheduled • TransGrid 330kV TL24 Towers 46 – subsidence within prediction and no observed

impact to structure. • Heritage – 1 scarred tree, monitoring scheduled. • Remnant ponding – one site over LW23 and two sites over LW24. • Current undertaking temporary drainage and investigating drainage options following

subsidence from LW24A. • Consulting with landowners and LMCC on drainage proposals

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LW24A Preview

• LW24A length was reduced to 1757m due to sill. • Commenced 2 October 2018 • Extracted 300m to date • 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 over LW24A predicted in flood model. • Complete extraction in early January 2019.

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Extraction Plan LW25-31

• Submitted Extraction Plan for LW25-31 to DPE for approval on 11/10/18.

• Subsidence Predictions prepared by DgS.

• 11 private properties, six dwellings affected (all remaining SSR).

• PSMPs provided to all affected landowners.

• Infrastructure management plans completed in consultation with owners.

• Environmental management plans completed in consultation with government agencies.

• DPE approval required for LW25 start in February 2019.

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TransGrid – TL24 relocation

• Stringing and energisation of the new section of line has been completed.

• Decommissioning, removal of redundant line and towers (shown in green) and rehabilitation completed (September 2018).

• Extinguishment of old easement commenced.

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MSSS – Shaft sinking (1)

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• MSSS looking north with preparations for 10ML tank in progress


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• MSSS looking south with Shaft #1 pre-sink in foreground and shotcreted batter between pad for sediment and erosion control


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• MSSS looking down onto Shaft #1 pre-sink

Traffic Data

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Mandalong Approvals Update

Community Consultative Committee Meeting 23 October 2018

SSD-5144 Mod 6: MSSS Water Management

• Modification to allow for the temporary controlled release of stored water from the Mandalong South Surface Site Sediment Dam following significant rainfall events.

• Additionally, seeking the ability to transport the sediment and material collected at the Mandalong South Surface Site to the Cooranbong Entry Site.

• Statement of Environment Effects (SEE) lodged and DP&E to place the SEE on public exhibition for two weeks.

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• Environmental and social impacts resulting from the proposed modification are unlikely to be significant with no change to the current MSSS footprint or substantial infrastructure requirements.

• Ongoing maintenance activities including transport of wet and dry material can be managed within the confines of existing management systems.

• The proposed modification to SSD-5144 is of minimal environmental impact and will remain substantially the same development as originally approved.

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SSD-5144 Mod 7: 33kV Transmission Line Project

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• 7.7 km of 33 kV power line from Mandalong Road to the MSSS running along existing 132 kV and 330 kV power lines.

• Detailed design completed and submitted to Ausgrid for certification.

• Heritage, ecology, visual, noise, air quality, traffic and EMF assessments completed.

• Open Days held September 2018. Additional sessions will be held in November 2018.

• SEE drafting commenced.

• EPBC referral made to Commonwealth DoE.

• Additional geotechnical drilling completed October 2018.

• Easement agreements to be negotiated with landowners.

• Construction commencement Q3 2019.

Thank You

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Documents

Minutes of Centennial Mandalong Community Consultative ...data.centennialcoal.com.au/domino/centennialcoal/cc205.nsf/0... · Flood path inspections have been undertaken of Tobins