140625 Watermark PAC Site Tour Final. Overall SITE TOUR MAP 2. Location 1 Roworth Road –Eastern...
Transcript of 140625 Watermark PAC Site Tour Final. Overall SITE TOUR MAP 2. Location 1 Roworth Road –Eastern...
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1. Overall SITE TOUR MAP
2. Location 1 Roworth Road – Eastern Open Cut Mining Area
3. Location 2 Grinding Groove
4. Location 3 “Linavardi” – Southern Open Cut Mining Area
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Location 1 Roworth Road
Eastern Mining Area
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You Are Here
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Black Mountain Mt Watermark
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Minimise impacts on Water, Agricultural Land and Amenity: Buffer Zone (900 metres plus) between Highwall Crest and the Groundwater Aquifer
5km to the main Groundwater Aquifer palaeochannel where the large scale irrigation bores are located
BSAL – isolated and fragmented, disturb 0.0064% of BSAL in NENW SRLUP
Mining on the ridge country (red soils) and stepping back a minimum of 150 metres from the black soils.
25% Vacant Land Properties – Shenhua is requesting due consideration is given to not impose Acquisition upon Request on 5 properties on large scale broadacre cropping land on black soil
Other Visual and noise bund
Tree Screen beside highway
Real Time continuous dust/noise monitoring, predictive meteorological system system to reduce impacts
Rehabilitation◦ Increase of 5% of Class III capability post‐mining (decrease in slope and increase in soil thickness)
◦ Biodiversity corridors will be established for Koalas and other fauna
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Data source – Appendix T ‐ Figure 7.3
X-section
mining areas are >5km from extraction bores at >0.5Ml/day
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Offset Area 6 has been amended to avoid 696 ha of BSAL and will remain for agriculture
Soil sampling and BSAL verification undertaken in accordance with the draft New England North West SRLUP (as per DGRs)
OAS&FS satisfied 96 ha of BSAL directly impacted by mining
Fragmented, isolated not used as large scale, high value agriculture
BSAL is:
0.0064% of BSAL in the NENW SRLUP
0.05% of total BSAL in Liverpool Plains area.
OAS&FS satisfied that adequate topsoil volumes available for rehabilitation
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6 residences significantly affected by noise and dust over the LOM (5 properties)
6 properties significantly affected by noise and dust (>25% vacant land)
10 residences moderately to marginally affected by noise and dust
Dust/Noise: 3 properties
Noise only: additional 2 properties
No existing residences
Properties are subject to regular high level background noise from machinery used for cropping (industrial agricultural land). This land can continue to be used for that purpose
Govt and community is sensitive to increase in foreign ownership of high value, large scale broad acre agricultural pursuits. Potential fragmentation and isolation of land
Recent precedents of Maules Creek and Boggabri Consent Conditions have not imposed this condition. Shenhua is requesting due consideration.
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Noise/Dust – 25% Affected Vacant Land
Visual/Noise Bunding
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Noise/Dust – 25% Affected Vacant Land – Acquisition Upon Request
Visual/Noise Bunding
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Image shows area used for large scale broad‐acre cropping.Image shows area used for large scale broad‐acre cropping.
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Location 1 – Roworth Rd, EASTERN MINING AREA
Photomontage – View from Pullaming Rd location14
Location 2 Grinding Groove WM‐GG3‐12
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Location 2 – GRINDING GROOVE (WM‐GG3‐12)
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Investigation Grinding Groove was discovered in drill site clearance during exploration
The following assessments were carried out in accordance to DGR’s requirements, to the approval of OEH and RAPs (under the supervision of the Senior Elders Group:
3D photogrammetric survey to provide a highly accurate surveyed 3D Extensive soil hand augering to provide detailed description of the subsurface Coring to determine geotechnical nature (thickness, rock strength, durability)
Conclusion
The site could effectively be relocated from its current location through manual
excavation
Our Commitments
Shenhua Watermark will relocate grinding grove WM‐GG3‐12.
The final resting location and detailed salvage methodologies for each site will be
developed and outlined in the Aboriginal Culture Heritage Management Plan.
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55 Aboriginal archaeological sites within the Project Boundary (51 new sites)
29 Aboriginal archaeological sites directly impacted
In‐situ conservation of other sites. Watermark Gully and the Mooki River Aboriginal Cultural Heritage Conservation Areas to be established
An Aboriginal Archaeology and Cultural Heritage Management Plan is being developed (including detailed salvage methodologies)
14 Historic Heritage sites, direct impacts to 10 sites within the Disturbance Boundary
Sites will be subject to archival recordings, archaeological test excavation and salvage in accordance with Historic Heritage Management Plan
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Hand Auger Soil Profile of WM GG3-12
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Travelling Slides
Eastern Mining Area (Site 2)
Along Kamilaroi Highway and The Dip Road East
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Ponderosa BSAL
Open-cut Pit Extents
Black Soil
Test Pit
Alluvial Survey Point – Field Test
GPS Alluvial Survey Point
Alluvial Survey Point –Confirmed Black Soil
Watermark Catchment Survey
Alluvial Black Soils
Open cut Mining Area
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BLACK Soil Profile – Dip Road RED Soil Profiles – Dip Road
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Location 3 “Linavardi”
Southern Mining Area
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You Are Here
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Water 150 m plus buffer from the black soils 1.3 km plus Buffer between the Black Soils and Groundwater Aquifer 2 km plus to nearest private bores with pumping entitlements Groundwater drawdown < AIP 2m minimal impact criteria, recover within 10 yrs post
mining Naturally higher salinity in groundwater aquifer to the southInfrastructure Area MIA naturally shielded by Watermark Gully and Mt Watermark Reducing visual, noise and dust impacts to residences and HighwayOther Rehabilitation of biodiversity and Class III land connected to black soil Mining on the ridge country only Property 125 – Most significantly affected by Noise and Dust, Acquisition Upon Request Avoiding disturbance of Breeza State Forest Avoiding disturbance of Mt Watermark
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Data source – Appendix T ‐ Figure 7.3
X-section
mining areas are >5km from extraction bores at >0.5Ml/day
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150 m
1.35 km
3.8 km
2 km
150m – buffer mining area to black soils1.35 km to edge of Gunnedah Formation2 km to bore with water entitlement3.8 km to deepest part of channel
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Predicted temporary drawdown Southern Mining Area < 2m ‐below Aquifer Interference Policy minimal impact criteria.
Southern mining area
EMA ‐ recovering
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Bore screen
Gunnedah Fm
Narrabri FmAvailablewater draw
19.2M
Predicted drawdown
1.4M
Temporary Drawdown impact = 7.4 % of available headNo predicted impact on pumping
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Highest quality water occurs in palaeochannel to east (<1000) source of good quality water is recharge from Liverpool Ranges and river leakage from the South
Brackish water flows to Gunnedah Fm in low volumes via the Narrabri Fm (>1000) Dilution effect is influenced via the higher flowrate Gunnedah Formation so high quality is
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Figure 7.31 ‐ salinity distribution from the NOW groundwater monitoring bore network.
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Salinity already occurs naturally in ephemeral watercourses, runoff salinity estimated to increase by ~ 1% at mine closure but decreasing overtime ‐ undetectable change from background levels
Establish salt tolerant deep rooted vegetation that depresses water levels in the mining areas. Establish adaptive water management flow and storage control systems that control to defined
background water quality levels. Water flowing to aquifers via increased infiltration won’t degrade the existing system or change the
beneficial use
Increased infiltration rates
Transpiration
Leachate testing shows backfill salinity is less than existing background levels
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Sediment dams
Sediment dams
Evapo‐concentration
1,000 ha Class III land capability strategically reinstated to maximise agricultural utilisation including 100 ha of BSAL
Progressive rehabilitation with a mixture of native vegetation and pasture species
No mining on black soil Liverpool Plains No loss of groundwater access to existing users
Committed to maintaining sustainable farming practices outside active mining areas through licencees
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Travelling Slides
Southern Mining Area (Site 3)
Along The Dip Road West and Nea Siding Road
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• 738 ha of Box Gum Woodland and DNG CEEC
• 51 ha other listed vegetation and flora EEC
• Habitat for threatened: 9 birds,1 bat and Koala
Translocation of 2% of the total Koala population within the Gunnedah LGA over 30 years (< 9 koalas pa)
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Onsite
• Mt Watermark and Offset Area 6
• Mooki River
• Mine Rehabilitation
Offsite
• Existing Offsite Offset Area (Barraba)
• Tambar Springs
Indirect
• Targeted research ARU and Universities
• Landcare funding
• Recovery planning
Protection of 6,071 ha of woodland and DNG
Revegetate 2,715 ha of woodland and DNG
Rehabilitate 2,384 ha of woodland
11,168 ha total:
• 7,840 ha Box Gum Woodland CEEC
• 160 other listed EEC
• 3,168 ha other woodland vegetation
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equilibrium level 280 m AHD 40 m free board – will not overtop as inflows less than evaporation rate groundwater sink slow salinity rise over time 39
artists impression of void lakeActual final void at Vickery, Greenwood void 2
Artist Impression of Watermark final void.
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