minutes of centennial mandalong community consultative...
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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.
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
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
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 of land transfer and advise CCC.
Cr Belcher By next meeting Update: 13/6/18 Council still in negotiation with RFS on 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
www.centennialcoal.com.au
Mandalong MineCommunity Consultative Committee
APP179211
19 June 2018
Water Quality 2018 – YTD Summary
2
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 0
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
Water Volume Discharged 2018 YTD
3
• 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 0 2.10 2.5
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.
4
Community Complaints February 2018 to June 2018
5
• There were no community complaints received since the previous meeting.
Community Sponsorship February 2018 – June 2018
6
• 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.
Mining Update
7
• 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.
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.
8
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
9
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
10
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
11
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.
12
Access Road and MSSS
13
First shaft will be drilled on this pad
Shaft Sinking
14
Shaft Sinking
15
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.
16
TL24 Towers
17
Using a crane to build the towers
TL24 Stringing
18
Using a helicopter to string the new line
TL24 Stringing
19
Using a basket to fit the spacers
20
CCC Visit
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.
21
TL25/26 Subsidence Mitigation
22
Traffic Data
23
Thank You
24
Pre-Meeting Report
Community Consultative Committee
Mandalong Mine 19 June 2018
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
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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.
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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.
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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 0 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.
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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 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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Mandalong Mine CCC Pre-Meeting Report – June 2018
Figure 4 - Surface Water TSS Results
Figure 5 - Surface Water Oil & Grease Results
0
2
4
6
8
10
12
01-M
ay-1
8
03-M
ay-1
8
05-M
ay-1
8
07-M
ay-1
8
09-M
ay-1
8
11-M
ay-1
8
13-M
ay-1
8
15-M
ay-1
8
17-M
ay-1
8
19-M
ay-1
8
21-M
ay-1
8
23-M
ay-1
8
25-M
ay-1
8
27-M
ay-1
8
29-M
ay-1
8
Oil &
Gre
ase (
mg/
L)
LDP001 and LDP002 Oil & Grease
LDP001 Oil & Grease Limit LDP002
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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
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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.
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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
-49
-29
-9
11
31
30 May 17 19 Jul 17 7 Sep 17 27 Oct 17 16 Dec 17 4 Feb 18 26 Mar 18
Wat
er L
evel
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
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Mandalong Mine CCC Pre-Meeting Report – June 2018
Figure 7 - Groundwater pH
Figure 8 - Groundwater Electrical Conductivity
0123456789
10
pH U
nits
pH (Field)
BH01 BH02A BH03 BH03A BH03BBH04 BH05 BH06A BH07B BH09BH10 BH10A BH11 BH12 BH13BH14 BH20 BH21 BH23 BH23ABH24A BH25A BH25B BH25C BH26ABH26B GW078043 MSGW01 MSGW03A MSGW03BMSGW04A MSGW04B
0
5000
10000
15000
20000
25000
30000
µS/c
m
Electrical conductivity (field)
BH01 BH02A BH03 BH03A BH03BBH04 BH05 BH06A BH07B BH09BH10 BH10A BH11 BH12 BH13BH14 BH20 BH21 BH23 BH23ABH24A BH25A BH25B BH25C BH26ABH26B GW078043 MSGW01 MSGW03A MSGW03BMSGW04A MSGW04B
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Mandalong Mine CCC Pre-Meeting Report – June 2018
Figure 9 – Groundwater Bore Locations
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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 off. 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.
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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.
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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 on the market in late June 2018. There is an ongoing commitment to sell properties in Mandalong that are surplus to Centennial’s needs.
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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
1
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
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
2
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
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
3
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