Annual Review 2015
Duralie Coal Pty Ltd Page 2
Contents
1 INTRODUCTION ...... 6
1.1 CONSENTS, LEASES, LICENCES AND OTHER APPROVALS ...... 7 1.1.1 Status of Leases, Licences, Permits and Approvals ...... 7 1.1.2 Amendments to Approvals/Licences during the Reporting Period ...... 8
1.2 MINE CONTACTS ...... 8
1.3 ACTIONS REQUIRED AT PREVIOUS AR REVIEW ...... 8
1.4 AUDITS ...... 10
2 SUMMARY OF OPERATIONS ...... 10
2.1 EXPLORATION ...... 10 2.1.1 Estimated Mine Life ...... 11
2.2 MINING ...... 11 2.2.1 Mining Equipment and Method ...... 11 2.2.2 ROM Production History and Forecast ...... 12
2.3 COAL HANDLING AND BENEFICATION ...... 12 2.3.1 Coal Washery Rejects Management ...... 12 2.3.2 ROM Coal Processing On Site ...... 13 2.3.3 Saleable Coal Production ...... 13 2.3.4 Coal Stockpile Capacity (ROM) ...... 13 2.3.5 Product Transport ...... 13
2.4 WASTE MANAGEMENT AND RECYCLING ...... 14 2.4.1 Chemical Characterisation of Wastes ...... 14 2.4.2 Sewerage Treatment and Disposal ...... 14 2.4.3 Fuel Containment ...... 14 2.4.4 Oil and Grease Containment and Disposal ...... 14 2.4.5 Used Tyres ...... 15 2.4.6 Rubbish Disposal ...... 15
2.5 WATER MANAGEMENT ...... 15 2.5.1 Water Supply and Demand ...... 15 2.5.2 Site Water Balance ...... 16
2.6 HAZARDOUS AND EXPLOSIVE MATERIALS MANAGEMENT ...... 17 2.6.1 Status of Dangerous Goods Approval ...... 17
2.7 OTHER INFRASTRUCTURE MANAGEMENT ...... 17 2.7.1 Dams Safety Committee ...... 17
3 ENVIRONMENTAL MANAGEMENT AND PERFORMANCE ...... 18
3.1 REVIEW OF ENVIRONMENTAL PERFORMANCE ...... 18 3.1.1 EPA Environment Protection Licence ...... 18 3.1.2 Project Approval Conditions ...... 18
3.2 METEOROLOGICAL MONITORING ...... 19 3.2.1 Rainfall ...... 19 3.2.2 Evaporation ...... 19
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3.2.3 Wind Speed and Direction ...... 20 3.2.4 Temperature ...... 21
3.3 AIR QUALITY ...... 21 3.3.1 Dust Control Procedures ...... 21 3.3.2 Dust Monitoring and Criteria ...... 21 3.3.3 Review of Dust Monitoring Results ...... 22 3.3.4 Reporting ...... 25 3.3.5 Complaints ...... 25
3.4 SEDIMENT AND EROSION CONTROL ...... 25
3.5 SURFACE WATER ...... 26 3.5.1 Surface Water Management ...... 26 3.5.2 Surface Water Monitoring ...... 28 3.5.3 Biological Monitoring ...... 30 3.5.4 Riparian Vegetation Monitoring ...... 31 3.5.5 Ecotoxicity Testing Program ...... 32
3.6 GROUNDWATER ...... 32 3.6.1 Groundwater Management ...... 32 3.6.2 Groundwater Monitoring ...... 33 3.6.3 Groundwater Depressurisation ...... 34 3.6.4 Reporting ...... 34
3.7 IRRIGATION ...... 34 3.7.1 Irrigation Area Soil and Vegetation Monitoring ...... 34 3.7.2 Re-establishment of Coal Shaft Creek ...... 36
3.8 BIOREMEDIATION ...... 36
3.9 MANAGEMENT OF BIODIVERSITY ...... 36 3.9.1 Complaints ...... 37
3.10 GIANT BARRED FROG REPORT ...... 37
3.11 BLASTING ...... 38 3.11.1 Blast Criteria and Control Procedures ...... 38 3.11.2 Review of Blast Monitoring Results ...... 38 3.11.3 Overpressure Results ...... 38 3.11.4 Review of Vibration Results ...... 39 3.11.5 Complaints ...... 39
3.12 NOISE ...... 39 3.12.1 Noise Criteria and Control Procedures ...... 39 3.12.2 Review of Noise Survey Results ...... 39 3.12.3 Rail Noise Monitoring ...... 42 3.12.4 Real Time Noise Monitoring Results ...... 43 3.12.5 Mobile Plant Noise Assessments ...... 44 3.12.6 Complaints ...... 45
3.13 LANDSCAPING AND VISUAL SCREENENG ...... 45 3.13.1 Complaints ...... 45
3.14 CULTURAL AND NATURAL HERITAGE CONSERVATION ...... 46
3.15 SPONTANEOUS COMBUSTION INCIDENCE ...... 47
3.16 AGRICULTURAL REPORT ...... 47 3.16.1 Cropping ...... 47
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3.16.2 Grazing ...... 47
4 COMMUNITY RELATIONS ...... 47
4.1 COMMUNITY CONSULTATIVE COMMITTEE ...... 47
4.2 ENVIRONMENTAL COMPLAINTS ...... 48
4.3 LIAISON AND COMPLAINT RESOLUTION ...... 48
4.4 EMPLOYMENT STATUS AND DEMOGRAPHY ...... 49
4.5 EMPLOYEE ENVIRONMENTAL AWARENESS TRAINING ...... 49
5 REHABILITATION ...... 49
5.1 BUILDINGS ...... 50
5.2 REHABILITATION OF DISTURBED LAND ...... 50
5.3 OTHER INFRASTRUCTURE ...... 53
5.4 REHABILITATION TRIALS AND RESEARCH ...... 53
5.5 FURTHER DEVELOPMENT OF THE FINAL REHABILITATION PLAN ...... 53 5.5.1 Final Void Treatment ...... 53
5.6 REHABILITATION MONITORING ...... 54
6 ACTIVITIES PROPOSED IN THE NEXT AR PERIOD ...... 55
6.1 ENVIRONMENTAL MANAGEMENT ...... 55
6.2 REHABILITATION ...... 55
7 REFERENCES ...... 56
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LIST OF TABLES
Table 1 DRE Action Plan from 2013-2014 AR Review Table 2 DP&E Action Plan from 2013-2014 AR Review Current Mining Equipment Table 4 Monthly ROM Coal Production Table 5 Product Coal Produced by Month (Duralie and Stratford Mines) Table 6 Stored Water Table 7 Duralie Mine Monthly Rainfall Records Table 8 Monthly Minimum, Average and Maximum Evaporation Rates Table 9 Monthly Minimum, Average and Maximum Wind Speeds and Dominant Wind Directions by Month Table 10 Monthly Minimum, Average and Maximum Air Temperatures by Month Table 11 Dust Deposition Gauge Results Table 12 High Volume Air Sampler Results Table 13 Riparian Health Scoring System Table 14 Riparian Vegetation Health Monitoring Results – September 2014 Table 15 to 22 Contributed Mine Noise During Surveys Table 23 Aboriginal Heritage Sites within EA Study Area Table 24 Summary of Landscape Function Indices Table 25 Rehabilitation Summary
LIST OF PLANS
Figure 1 – Site Location Plan Figure 2 – Monitoring Sites Figure 3 – Areas Disturbed and Rehabilitated
LIST OF APPENDICES
Appendix 1 Site Location, Monitoring Locations and Rehabilitation Plans Appendix 2 Meteorological Monitoring Appendix 3 Air Quality Monitoring Appendix 4 Water Monitoring Appendix 5 Blast Monitoring Results Appendix 6 Complaints List Appendix 7 Annual Biodiversity Report
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1 INTRODUCTION
The Duralie Coal Mine (DCM) is located approximately 80km north of Newcastle in New South Wales, between the villages of Stroud Road and Wards River. Refer Figure 1 (Appendix 1).
Development Consent for the mine was granted by the NSW Minister for Urban Affairs and Planning on 21 August 1997 and Mining Lease Number 1427 was issued by the NSW Minister for Mineral Resources on 6 April 1998.
In October 1998 a Statement of Environmental Effects (SEE) was produced to consider proposed alterations to the Duralie Mine. These proposed alterations were approved by the NSW Minister for Urban Affairs and Planning on 5 February 1999.
Construction commenced in June 2002 with mining production commencing in March 2003 and the first coal railed to the Stratford Mine for processing in the same month. Duralie Coal Pty Ltd (DPCL) received Project Approval for the Duralie Extension Project in November 2010 for mining activities to extend until 31 December 2021 and Mining Lease 1646 was issued on 4 January 2011. The Project Approval has since been modified on two occasions on 1 November 2012 and 5 December 2015.
Duralie Mine consists of an open-cut, truck and excavator mine producing run of mine (ROM) coal which is processed at the Stratford Coal Mine Coal Handling and Processing Plant (CHPP).
This Annual Review (AR) covers the environmental protection, pollution control and rehabilitation activities at the Duralie Coal Mine for the period 31 July 2014 to 30 June 2015. Where applicable, comparisons of performance have been undertaken against the plans outlined in the Environmental Assessment (EA) and regulatory requirements. Environmental activities planned for the next 12 months are also discussed.
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1.1 CONSENTS, LEASES, LICENCES AND OTHER APPROVALS
1.1.1 Status of Leases, Licences, Permits and Approvals
The Duralie Mine has the following approvals:
Mining Lease No. 1427 dated 6 April 1998 issued by the Minister for Minerals Resources. The lease was issued for a period of 21 years.
Environment Protection Licence (EPL) No. 11701 issued by the Environment Protection Authority on 4 September 2002 as modified by subsequent variations (refer to EPA website).
DLWC Bore Licence for the Duralie Open Cut (20BL168404) dated 23 September 2002. Renewed on 23 September 2012.
DLWC Bore Licence for monitoring bores (20BL168539) dated 31 October 2002, three bores added on 2 February 2004.
Water Supply Works Approval (20WA202053) under the NSW Water Management Act, 2000 issued by the Department of Water and Energy (now NSW Office of Water) on 15 May 2009 for the Coal Shaft Creek diversion and various on-site water management structures. Replaced DIPNR licence - 20SL060324.
Project Approval for the Duralie Extension Project (DEP) dated 26 November 2010 and as amended by the Land and Environment Court on 10 November 2011
Commonwealth Approval [EPBC 2010/5396] for the Duralie Extension Project granted 22 December 2010.
Issuing of Mining Lease 1646 by the Minister for Primary Industries on 4 January 2011.
Mining Operations Plan (MOP) approved by DRE on 20 May 2011 and revised and approved by DRE on the 18 March 2015
Modification to Project Approval (08_0203) for the Duralie Extension Project was granted by the Minister for Planning and Infrastructure on 1 November 2012 regarding Duralie rail hours. The expiry of this licence remains 31 December 2021.
Various environmental management plans are also approved, and some pending approval. The recent versions approved by DP&E are available on the Duralie Coal website.
Environmental Management Strategy (revised), DP&E approved as of 23 June 2015.
Air Quality and Greenhouse Gas Management Plan (revised), DP&E approved 23 June 2015.
Biodiversity Management Plan (revised), State approved 29 March 2012.
Blast Management Plan (revised), State approved 6 March 2012.
Giant Barred Frog Study and Giant Barred Frog Management Plan, State approved 6 March 2012.
Heritage Management Plan (revised), DP&E approved as of 23 June 2015.
Noise Management Plan (revised), DoPI approved as of 30 June 2013.
Waste Management Plan, DP&E approved 23 April 2015.
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Water Management Plan (revised), DP&E approved 2 April 2015.
Rehabilitation Management Plan (revised), DoPI approved as of 30 June 2013.
Duralie Extension Project Study of Dust Emissions from Rail Transport under condition 21A of the Project Approval, approved 2012.
Pollution Incident Response Management Plan (revised), August 2014.
1.1.2 Amendments to Approvals/Licences during the Reporting Period
Modification 2 to Project Approval (08_0203) for the Duralie Extension Project was granted by the Planning Assessment Commission as delegate of the Minister for Planning on 5 December 2014 regarding an increase to the height of waste dumps, deepening of the Clareval Pit and minor additional surface development to stabilise pit walls. The expiry of this licence remains 31 December 2021.
Variation to EPA Environment Protection Licence 11701 was received on 5 December 2014 in accordance with notice number 1524930.
Variation to EPA Environment Protection Licence 11701 was received on 27 April 2015 in accordance with notice number 1530091.
Mining Operations Plan was updated and approved by the Director General for DRE on 18 March 2015 following modification of the Duralie Extension Project. Expires on 31 December 2019.
All Environmental Management Plans were revised and updated following modification of the Duralie Extension Project Approval. Revised plans have/will been progressively submitted to DP&E for approval.
1.2 MINE CONTACTS
Site personnel responsible for mining, rehabilitation and environmental issues at the end of the reporting period were:
Duralie Coal – Operations Manager: Mr John Cullen
Leighton Contractors - Project Manager: Mr Matthew Joyce
Leighton Contractors - Mining Superintendent: Mr Col Weildon
Duralie Coal - Manager Environment & Community: Mr Scott Mitchell
1.3 ACTIONS REQUIRED AT PREVIOUS AR REVIEW
An annual environmental review of Duralie Coal Mine was undertaken by DRE and the DP&E on the 5 November 2014. A site inspection was also carried out by both departments with the purpose of reviewing compliance with environmental requirements of relevant approval instruments. Comments and observations that were identified by DRE are provided in Table 1. A response letter was also provided to DRE on 11 December 2015.
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Table 1: DRE Action Plan from 2013-2014 AR Review
Observation Action Due Date Comments/status PAF management Detail on any PAF 2014/15 AR Refer Sections 2.2, 2.3.1 and management measures 2.4.1 Anomalous environmental Require greater detail on any 2014/15 AR Explanations provided-see monitoring results anomalous results. More relevant sections discussion required. Comparison to EA Need to ensure greater 2014/15 AR All monitoring results comparison to the EA through compared to EA predictions the document where relevant – see relevant sections Groundwater monitoring Groundwater comparison to 2014/15 AR EA comparison discussed – EA. see Sections 3.6.2 and 3.6.3 Rehabilitation principles Section 5.1 should reference 2014/15 AR Now Section 5.2 and referred back to relevant EMP’s to RMP AR guideline Ensure AR guideline is 2014/15 AR Guideline followed followed Offset area Provide information about the 2014/15 AR Provided – see Sections 3.9 baseline surveys and the and 5.6 revegetation stages Rehabilitation monitoring Provide results of rehabilitation 2014/15 AR Provided – see Section 5.6 monitoring (as per 5.3) Re-working of previous Re-work the previously 2014/15 AR Rehabilitation re-work has rehabilitated area rehabilitated area (South of been undertaken. Seeding power lines) to achieve proposed in spring 2015. satisfying outcomes Refer Section 5.2 and Table 26. Reporting format Follow section 5 of the AEMR 2014/15 AR Guidelines followed for current Guidelines AR
Reference Area Choose a successful non- 2014/15 AR Rehabilitation success is mined impacted area and compared to bench mark measure future rehabilitation values measured in remnant against it vegetation in the Duralie biodiversity offset area. Refer to Section 5.6 Water anomalies observed on Provide regional information to 15 December Details were provided to DRE 18 November 2013 confirm the anomalies 2015 in a response letter dated 11 observed were a regional December 2015 stating phenomenon “Leading up to the event Duralie received only 91.8mm rainfall over 4 months from July to October 2013. The regional average for this period is 281.8mm. On 18 November 2014 Duralie received 102mm rainfall in 24 hours which is greater than the regional average rainfall for the entire month of November (83.3mm).”
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Following the review, DP&E provided correspondence to Duralie Coal. Comments are provided in an action plan and addressed in Table 2.
Table 2: DP&E Action Plan from 2013-2014 AR Review
Observation Action Due Date Comments/status Exploration Review the explanation of coal 2014/15 AR Refer to Section 2.1.1. reserves Section 2.1.1 Reference made to JORC guidelines. RL69 description Confirm description of RL69 2014/15 AR Refer to DCM MOP Section coal stockpile in the consent. 2.3.4 Outlying environmental Where there are outlying dust 2014/15 AR Explanations provided -see monitoring results or water results need to relevant sections specify date and possible cause. Site figures Show TEOM as own category 2014/15 AR See Appendix 1 – Figure 2 in monitoring sites figure. High TEOM results Provide detail on any high 2014/15 AR No high TEOM levels this TEOM levels. reporting period – see Section 3.3.3.3 Website reporting frequency DP&E to review reporting 2014/15 AR No further advice received as frequency of results on of 30 June 2015. website. Removal of surface water sites Note any surface water sites 2014/15 AR No surface water monitoring removed from licence. sites were removed during the reporting period. Baseline biological monitoring Biological monitoring results 2014/15 AR Comparisons made in current and comparison to EA require a comparison to EA AR. Refer to Section 3.5.3 and baseline data. Noise monitoring excursions Noise results should have 2014/15 AR Refer to Section 3.12, some detail on operational specifically 3.12.2 and 3.12.4 changes when excursions are recorded, even if there is an inversion present. Need to state any management measures taken.
1.4 AUDITS
An Independent Environmental Audit of the Duralie Coal Mine Project was conducted by Trevor Brown and Associates during November 2014.
The audit conclusions indicated a generally high standard of compliance of the Duralie Coal Mine Project activities with the conditions of approval granted to the project under the Project Approval 08_0203, Environmental Protection Licence 11701 and Mining Leases 1426 and 1646.
The audit report and DCPL’s response to the recommendations were provided to DP&E in February 2015 by the independent auditor with further correspondence with DP&E the audit report was revised and resubmitted by the independent auditor to DP&E on 16 July 2015. Following acceptance by DP&E the full audit report and responses to the recommendations will be made available on the Duralie Coal website at http://www.duraliecoal.com.au/environment/environmental-audit.php
2 SUMMARY OF OPERATIONS
2.1 EXPLORATION
No exploration activities were undertaken during the 2014-2015 reporting period with no activities scheduled for 2015-2016.
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2.1.1 Estimated Mine Life
Under the November 2011 Project Approval (DoPI 2011), mining operations are permissible until 31 December 2021. This date remains the same under the Project Modification granted on 5 December 2014.
Proven and probable reserves for the Duralie Mine as of 30th June 2015 was 12.4 million tonnes, based on depletions from the June 2014 JORC statements. Further detail is provided in the JORC Guidelines.
2.2 MINING
The Duralie Mine is an open cut truck shovel operation located approximately 20km south of the Stratford Mine facilities. The workings extract coal from the Weismantel and Clareval seams at the base of the Gloucester Coal Measures. The deposit forms a synclinal structure with the open cut area located at the southernmost crop line within the main axis of the Gloucester Basin. The operation is now situated on the west limb of the syncline with seams dipping at about 50 degrees east. Approval of ML1646 has allowed an extension of the Weismantel pit to the North West of current operations and the inclusion of the Clareval seam parallel and to the west of the Weismantel seam.
Dips within the deposit vary from a shallow 5 degrees to an almost vertical profile. Consequently, a method of horizontal 3m to 4m benches is used as the primary extraction method. An average of 5m of free dig material is generally experienced at Duralie after which all waste material generally requires blasting.
Mining in the Weismantel pit has been completed up to Strip 15 and during the reporting period no further mining occurred. In the Clareval pit mining has now been completed in the Southern Limb and during the reporting period continued in Blocks 2 to 7.
During the reporting period waste rock produced was used to progress backfilling in the Weismantel pit and the Southern Limb of the Clareval pit. Additionally, the modification approved in December 2014 allowed for an increase in the waste dump height to a maximum of RL135.
Surface facilities at the mine and current mine development as at 30 June 2015 are indicated within Figure 3, provided in Appendix 1.
The truck fleet currently comprises predominantly Cat 785XQ model trucks supported by a lesser number of attenuated Cat 789C trucks.
2.2.1 Mining Equipment and Method
The mining equipment currently in use at DCM up until the 30 June 2015 is listed in Table 3 provided below.
Table 3: Current Mining Fleet*
Plant Item Number Excavators 4 Haul Trucks 16 Drills 3 Dozers 5 Water Carts 2 Graders 2 Loader (ROM feed) 1 *Total fleet not all used concurrently.
The mining sequence is summarised below and is conducted in accordance with the approved Mining Operations Plan and supporting approvals including Environmental Management Plans, respective licences (refer 1.1) and DEP Approval.
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Fauna/flora assessment (as required) is undertaken and review of approvals and previous assessments of the area including cultural heritage surveys.
A sedimentation control plan is prepared for the area to be disturbed (or an existing plan utilised).
Sedimentation controls are implemented (as required).
Tree clearing is limited to the minimum required for ongoing operations and undertaken ahead of the advancing face or dump. The distance is generally limited to 100m.
Topsoil is removed in accordance with a topsoil stripping plan.
Overburden removal is undertaken by a hydraulic excavator. Generally, the first one to five metres of clay overburden is ripped and/or free-dug. Deeper overburden requires blasting prior to excavation.
Overburden waste material is deposited within/above a void section of the mining excavation until at final approved height in readiness for shaping to the approved final landform profile.
2.2.2 ROM Production History and Forecast
Actual ROM production for the reporting period is listed in Table 4 below by month.
Table 4: Monthly ROM Coal Production
MONTH ROM PRODUCTION (tonnes) July 2014 184,497 August 2014 139,249 September 2014 167,419 October 2014 174,737 November 2014 156,550 December 2014 158,284 January 2015 87,305 February 2015 145,324 March 2015 181,940 April 2015 71,727 May 2015 174,670 June 2015 245,673 Total 1,887,375
Total ROM production (July 2014 - June 2015) was 1.89 million tonnes.
Total waste mined (July 2014 - June 2015) was 10.80 million bench cubic metres (bcm).
ROM production forecast for next reporting period will be 1.4 million tonnes.
2.3 COAL HANDLING AND BENEFICATION
2.3.1 Coal Washery Rejects Management
Rock greater than 140 mm is removed from ROM coal using a rotary breaker at the DCM. The separated rock is conveyed to a bin from which it is loaded out and trucked to be buried on site as potentially acid forming (PAF) waste. All other reject fractions are generated at the Stratford Mine and deposited along with processing waste fractions produced from the washing of Bowens Road North
Annual Review June 2015 Duralie Coal Pty Ltd Page 13 and Stratford deposit coals. Refer to the Stratford Coal Mine AR for details regarding the handling and disposal of reject material at the Stratford Coal Mine site.
2.3.2 ROM Coal Processing On Site
ROM coal is processed through a rotary breaker to produce a coal fraction less than 140 mm. The essential elements of the coal processing plant on site and their design capacities are as follows:
ROM conveyor handling rate 1400 tph Train load out rate 2400 tph
2.3.3 Saleable Coal Production
Product coal utilising Duralie ROM coal is produced at the Stratford Mine site. Blending of Duralie ROM coal with other ROM coals and rewashed reject material occurred during processing to produce a saleable product coal. Saleable coal production for the period July 2014 to June 2015 was 1.64 million tonnes comprising 0.59 million tonnes of coking coal and 1.04 million tonnes of thermal coal. Actual coal production to date by month is shown in Table 5.
Table 5: Product Coal Produced by Month for Duralie and Stratford Mines
MONTH MONTHLY PRODUCT COAL (tonnes) Coking Coal Thermal Coal Total Product Coal July 2014 87,820 112,988 200,808 August 2014 47,918 99,878 147,796 September 2014 59,791 84,194 143,985 October 2014 45,248 105,228 150,476 November 2014 36,892 88,775 125,667 December 2014 52,575 98,766 151,341 January 2015 7,269 78,357 85,626 February 2015 27,925 73,202 101,127 March 2015 47,681 74,869 122,549 April 2015 47,770 53,620 101,390 May 2015 51,645 65,860 117,505 June 2015 86,259 103,633 189,893 Total 598,793 1,039,371 1,638,164
2.3.4 Coal Stockpile Capacity (ROM)
The ROM pad stockpile is utilised for temporary ROM coal storage which is transported by loader directly to the ROM hopper. Additionally, a temporary ROM coal stockpile (RL69), located within the approved surface development area, may be utilised during the MOP term. ROM coal temporarily stored at this stockpile will be transported by truck to the DCM coal handling area.
Stockpile Capacity (tonnes) Duralie ROM pad 20,000 Duralie RL69 ROM 60,000 Duralie RL69 ROM 150,000
2.3.5 Product Transport
All ROM coal is transported from site to Stratford Coal Mine by rail. The approved hours of operation of the Duralie shuttle train are between 6 am and midnight (i.e. 18 hours). In exceptional circumstances, the Duralie shuttle train may operate on the North Coast Railway between midnight and 1 am in accordance with Condition 8, Schedule 2 of the NSW Project Approval. This condition wasn’t required to be utilised during the reporting period.
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1.89 million tonnes of ROM coal was transported from the Duralie Mine in the reporting period to Stratford. 825 train movements (Duralie-Stratford-Duralie circuit) occurred during the July 2014 to June 2015 period. There was a maximum daily movement of 4 trains.
2.4 WASTE MANAGEMENT AND RECYCLING
2.4.1 Chemical Characterisation of Wastes
Waste rock has been previously analysed as part of the EIS and DEP EA.
Chemical characterisation of wastes during the reporting period has consisted of geochemical (including NAG – nett acid generating) testing of waste rock profiles.
Chemical characterisation of wastes was also supported by assessment of pit sump and other mine water pH’s.
PAF and carbonaceous material areas such as floors, benches and ROM pads are treated with ground limestone to avoid acid generation. To date, there have been only isolated incidences of acid formation, which has been treated with additional limestone. During the reporting period there were no instances of acid formation in the pit waters or on waste dumps identified. Mining models also define locations of potentially acid forming (PAF) and non-acid forming (NAF) waste material to inform the correct placement of overburden and interburden waste material.
2.4.2 Sewerage Treatment and Disposal
Sewage treatment at the mine site involves multiple systems at the offices and crib rooms that manage all generated sewage. Sewage is processed using a Garden Master 7100 Elite Aerated Waste Water Treatment System. The system works on the combined principles of primary settlement and aerobic treatment. Treated effluent is discharged via a spray system into a grassed area located to the southwest of the Main Office.
The sewage treatment facility is registered with Great Lakes Council.
2.4.3 Fuel Containment
Fuel (diesel) storage at the mine site consists of two 100,000 litre capacity above ground double- skinned storage tanks (Transtanks). The storage area is subject to Dangerous Goods Acknowledgement Number 35/036328 (Workcover NSW). Potential hydrocarbon contaminated runoff from fuel fill points is captured on concrete pads and directed through an oil water separator. Dirty water runoff from the fuel pad is captured and directed to the main water dam.
2.4.4 Oil and Grease Containment and Disposal
Bulk oil is stored onsite within a bunded area and double-skinned tanks near the workshop.
Used engine oils (lubricating oils), hydraulic oils and grease are recovered during plant and vehicle servicing in the workshop and in the field.
Within the workshop area, separate bunded areas hold a 28,000 litre waste oil tank and bulk storage of oils, greases and lubricants (tanks and drums). A washpad is utilised to clean vehicles and plant either prior to leaving site or for general servicing/repair. Off the washpad is a concrete sump which serves to trap silt and from which oil is removed using an oil water separator. Waste oil collected is removed from site by a commercial contractor for subsequent recycling off-site.
In addition, Aurizon – the train contractor at site – provides temporary storage for waste oil prior to periodic removal by the waste oil contractor who services the Duralie site. Waste oil is stored in 200
Annual Review June 2015 Duralie Coal Pty Ltd Page 15 litre drums mounted upon a bunding device.
Contractors are generally required to manage and remove from site all waste oil generated during their operations.
2.4.5 Used Tyres
Disposal of used heavy equipment tyres was undertaken in accordance with advice from the EPA in the following manner including placement of tyres in discreet lots and buried with 5m of cover, sites and depth of disposal recorded and avoiding disposal with any other combustible material.
2.4.6 Rubbish Disposal
All domestic rubbish (e.g. food scraps, paper etc) are deposited in industrial rubbish bins which are periodically emptied by a waste contractor for subsequent disposal.
Scrap metal produced by the Leighton Mining workshop is collected and transferred off site by a scrap metal merchant. The merchant collects the scrap metal whenever the bins become full.
Paper, cardboard, aluminium drink cans and other recyclables are collected for recycling as part of site waste segregation. Waste is transported to licenced facilities and waste tracking sheets recorded.
All contractors are responsible for the collection and removal of their own rubbish.
2.5 WATER MANAGEMENT
Water management is undertaken in accordance with the approved Water Management Plan and sub- components of the plan including surface water, ground water and site water balance required under Condition 29, Schedule 3 the DEP Project Approval.
The main principles of the water management system on-site are to:
Minimise the generation of dirty water;
Minimise storage requirements by maximising re-use of dirty water;
Remove potential impacts on downstream water resources by provision of secure containment on site and disposal by irrigation re-use;
Implement a fail-safe system, whereby under extreme events in excess of design capacity, dirty waters would spill to the mine pit and not to the clean water catchments; and
Not allow sediment laden water having an elevated suspended solids concentration to be discharged off site.
2.5.1 Water Supply and Demand
The main water supply storage on-site for use in dust suppression is the Main Water Dam (MWD) (monitoring point SW3) located to the northwest of the Industrial Area. The MWD, Auxiliary Dam 1 (AD1) and Auxiliary Dam 2 (AD2) are the principal permanent mine water storages on-site. Water from these dams comprises pit produced water (runoff to/rainfall/seepage to), water from specific sediment dams and surface water runoff from the Industrial area.
The principal water losses in the water system are:
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Water applied to land by means of irrigation. Water used for dust suppression. Evaporation from the Main Water Dam, Auxiliary Dam 1 and Auxiliary Dam 2. Water retained in ROM coal and railed to Stratford.
The Mine Water Dam’s current storage capacity is approximately 1405 ML whilst Auxiliary Dam 1 can contain approximately 460 ML and Auxiliary Dam 2 has an estimated storage capacity of approximately 2870 ML.
At the completion of the reporting period (30-Jun-2015) the Mine Water Dam contained 1000 ML (77.2%), Auxiliary Dam 1 contained 147ML (37.3%) and Auxiliary Dam 2 contained 2083 ML (80.3%).
It is estimated that 936 ML of water was pumped from the mine workings during the twelve month period ending 31 December 2014. This water has its origins in groundwater inflows, seepage through out of pit/in pit waste material, runoff and incident rainfall. The volume of groundwater estimated reporting to Weismantel pit in 2014 was 673 ML, which includes waste dump seepage recharged from irrigation and rainfall. This compares with approximately 120 ML predicted for 2014 by groundwater modelling as part of EA studies (GCL, 2010) for the two pits, however this figure doesn’t account for waste dump seepage resulting from irrigation. It is therefore inferred that the balance of the “non- rainfall” pit inflow in 2014 of 553 ML originated from seepage from in-pit waste rock which would be recharged by irrigation of the waste rock emplacement at its southern end. DCPL holds an existing Bore Licence (20BL168404) issued by the NSW Department of Primary Industries, that allows for up to 300 ML of groundwater to be extracted from “works” in any 12 month period. As indicated above it is estimated that 120ML of groundwater inflow to the pit occurred during 2014. Further detail is provided in the annual site water balance report available on request.
2.5.2 Site Water Balance
A review of the Main Water Dam, AD1 and AD2 balance 2014 is as follows: Figures are based on Duralie Mine Site Water Balance Review for the 2014 calendar year. The full report is available on request.
Inflows (mL/pa)
Rainfall runoff 731 Pump from open cut pits 900 Pump from other storages 36 MWD diversion seepage 131 First flush capture 20 Total Inflow 1,818
Outflows (mL/pa)
Evaporation 620 Haul Road (dust suppression) 224 Irrigation and Evaporator Fan Loss 1,272 Total Outflow 2,116
INFLOW - OUTFLOW -298
Start of 2014 year total storage volume 3411 End of 2014 year total storage volume 3120 Change in Storage -291
Even though water stored in the MWD, AD1 and AD2 decreased (-291) during 2014, water was allowed to accumulate in the Weismantel pit, with an estimated 278 ML storage at the end of 2014. This results in a total stored water volume decrease on site of approximately 13 ML during 2014 calendar year.
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Total water stored at the Duralie Coal Mine is presented in Table 6 (Volumes reported are at 30-June- 2015).
Table 6: Stored Water
Volumes Held (mL) Start of At end of Reporting Storage Reporting Period Capacity Period Mine Water 3362 3399 4591 Contaminated Water 0 0 0 Controlled Discharge Water na na na
2.6 HAZARDOUS AND EXPLOSIVE MATERIALS MANAGEMENT
Hazardous materials are stored and used in accordance with relevant safety data sheets (SDS). SDS’s are kept in a file inside the First Aid Room and are available from an online database on the company intranet.
2.6.1 Status of Dangerous Goods Approval An “Acknowledgement of Notification of Hazardous Chemicals on Premises” (Acknowledgement Number NDG 036328) issued by Workcover NSW is held by Duralie Coal Pty Ltd. This Acknowledgement addresses:
Above-ground tanks (diesel) External magazine (detonators and boosters) Above-ground tank (oxidising liquid) Roofless bulk storage (ammonium nitrate)
2.7 OTHER INFRASTRUCTURE MANAGEMENT
2.7.1 Dams Safety Committee
The Main Water Dam, Auxiliary Dam 1 and Auxiliary Dam 2 are all prescribed under the Dams Safety Act 1978.
Plans for the prescribed dams have now been combined into single documents. A DCM Prescribed Dams Operation and Maintenance Manual was prepared and approved by the DSC in July 2013. A Prescribed Dams Safety Emergency Plan (DSEP) has been prepared in consultation with the DSC and review comments have been provided by the SES. The plan is now waiting to be finalised with DSC.
Routine visual inspections of the prescribed dams are undertaken three (3) times per week. Monthly monitoring of piezometers terminating beneath the dam’s clay core and within the clay core is also undertaken and water levels interpreted. Monuments located along the crests of the dams were surveyed for any indication of movement during the reporting period. No significant movement has been identified in any of the dam walls during the reporting period. Routine maintenance of vegetation on the dam walls has been undertaken.
The Dam Safety Committee visited DCM in February 2015 to inspect the prescribed dams and did not identify any significant issues.
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3 ENVIRONMENTAL MANAGEMENT AND PERFORMANCE
3.1 REVIEW OF ENVIRONMENTAL PERFORMANCE
A brief review of environmental performance in relation to the Environment Protection Authority (EPA) issued Environment Protection Licence (EPL) 11701, together with NSW Project Approval conditions, is provided below. This performance is further discussed in the sections on environmental management activities and environmental monitoring.
3.1.1 EPA Environment Protection Licence
Records of environmental monitoring activities have been kept.
A record of pollution complaints has been maintained.
Dust suppression measures are in place. Dust monitoring to date (dust deposition gauges, high volume (PM10) air samplers and a TEOM monitor) shows that current dust suppression systems have been effective and dust levels were below limits set by EPA (upon exclusion of non-dust contamination of dust deposition gauges).
Quarterly noise compliance monitoring was undertaken in July 2014, October 2014, February 2015 and April 2015. The surveys determined that monitored mine operational noise at the time of the surveys complied with EPA noise level criteria at all monitored locations.
One sediment dam spill occurred during the reporting period. The spill was from RS1 on 22- Apr-2015 and a sample was collected. The dam capacity is designed and sized appropriately as per the approved erosion and sediment control plan within the Surface Water Management Plan.
A Pollution Incident Response Management Plan (PIRMP) is available on the DCPL website
Pollution Reduction Program (PRP) requirements have been met and monitoring will continue in the coming reporting period including the exposed areas assessment.
There were no incidents reported to the EPA during the reporting period.
During the reporting period the EPA requested reports on the following complaints which were received via the EPA hotline: o Noise complaint received directly by DCM and via NSW EPA on 15th August 2014.
3.1.2 Project Approval Conditions
Project Approval conditions which were met during this reporting period include those related to administrative and reporting conditions, operation of a meteorological station and inversion towers, operation of dust monitoring equipment including real-time dust, operation of a real-time noise unit, operation of a community hotline, operation of a community consultative committee, surface and ground water monitoring including biological monitoring and ecotoxicity testing, blast monitoring including a blast hotline, operation of an irrigation system, protection of Aboriginal and European heritage sites, monitoring of topsoil for Aboriginal artefacts and biodiversity and rehabilitation monitoring. Environmental monitoring data was regularly reported as required by the project approval and associated environmental management plans.
An annual environmental review of the DCM was undertaken by DRE and the DP&E on the 5 November 2014. A site inspection was also carried out by both departments with the purpose of reviewing compliance with environmental requirements of relevant approval instruments.
An Independent Environmental Audit of the DCM was conducted by Trevor Brown and Associates
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during November 2014. The audit conclusions indicated a generally high standard of compliance of the DCM activities with the conditions of approval granted to the project under the Project Approval 08_0203, Environmental Protection Licence 11701 and Mining Leases 1426 and 1646. The audit report and DCPL’s response to the recommendations were provided to DP&E in February 2015. Following further correspondence with DP&E the audit report was revised and resubmitted to DP&E on 16 July 2015. Following acceptance by DP&E the full audit report and responses to the recommendations will be made available on the Duralie Coal website at http://www.duraliecoal.com.au/environment/environmental-audit.php
3.2 METEOROLOGICAL MONITORING
A meteorological station (i.e. weather station) is operated at the mine site as required by the Project Approval Conditions. The location of the meteorological station and the two inversion monitoring towers is shown on Figure 2 (Appendix 1).
3.2.1 Rainfall
Table 7 provided below summarises the rainfall record obtained from the site Weather Station rain gauge. Graphical representation of the historical average and monthly recorded rainfall during the reporting period is provided in Appendix 2.
Table 7: Duralie Mine - Monthly Rainfall Records
MONTH YEAR STROUD DISTRICT 2015 (to end reporting period) 2014 AVERAGE2 Monthly No. of Rain Monthly No. of Rain 1889-2010 Total (mm) Days/Month1 Total (mm) Days/Month1 January 147.0 12 15.6 5 115.3 February 37.0 11 54.8 9 125.0 March 138.0 8 189.2 13 147.3 April 275.4 12 92.8 14 100.9 May 139.8 14 19.6 9 91.5 June 28.0 10 32.0 15 101.1 July 21.0 8 75.1 August 135.2 14 65.3 September 67.0 10 63.1 October 42.0 6 78.3 November 39.0 6 83.3 December 255.6 17 100.8 TOTAL 765.2 67 963.8 134 1147.0
Notes: 1. No. of Rain Days/Month - the number of days in the month on which rain fell. (When tipping bucket rain gauge data used, a “rain day” by definition requires a minimum recording of >0.25mm comprising dew, heavy fog or light rain (or a combination thereof)). 2. Average based on Stroud Post Office records until mine site weather station commissioned in 2002.
The 2014 calendar year rainfall total was lower than the long-term district average with four of the twelve months in this period exceeding their respective long term average.
The rainfall total for the reporting period (July 2014 to June 2015) was 1325.0 mm, well above the historical average.
3.2.2 Evaporation
Table 8 shows minimum, average and maximum evaporation rates for the reporting period. The graphical representation of the daily minimum, average and maximum evaporation rates recorded for each month during this review period is provided in Appendix 2.
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Table 8: Monthly Minimum, Average and Maximum Evaporation Rates
MONTH MINIMUM AVERAGE MAXIMUM EVAPORATION RATE EVAPORATION RATE EVAPORATION RATE (mm/day) (mm/day) (mm/day)
July 2014 0.3 3.6 1.8 August 2014 0.4 3.6 1.6 September 2014 0.4 4.5 2.6 October 2014 1.1 6.3 3.8 November 2014 1.4 7.5 4.2 December 2014 0.7 6.6 3.6 January 2015 0.4 6.1 3.9 February 2015 0.9 4.8 3.3 March 2015 0.6 5.4 3.0 April 2015 0.6 4.0 1.9 May 2015 0.2 4.1 1.4 June 2015 0.3 2.4 1.0
3.2.3 Wind Speed and Direction
Table 9 below indicates the monthly average and maximum wind speeds and dominant wind directions for the period July 2014 to June 2015, inclusive. The graphical representation of the daily average and maximum wind speeds recorded and monthly wind roses for each month during this period are provided in Appendix 2.
Table 9: Monthly Average and Maximum Wind Speeds and Dominant Wind Directions by Month
MONTH AVERAGE MAXIMUM DOMINANT WIND DIRECTIONS WIND SPEED WIND SPEED (k/hr) RECORDED (k/hr)
July 2014 8.3 48.9 N, W-WSW August 2014 6.8 46.3 S-WSW September 2014 8.3 58.0 NNW-N, SW-WSW October 2014 8.2 60.5 NNW-NNE, S-SSW November 2014 8.6 51.7 NNW-ENE, S-SSW December 2014 8.2 47.3 NNW-NE, S-SSW January 2015 8.2 43.8 NNW-ENE, S-SW February 2015 6.3 31.9 NNW-ENE, ESE, SSE-S March 2015 6.6 53.8 NNW-NNE, S-SSW April 2015 7.0 64.3 NNW-N, S-W May 2015 5.7 51.5 N, SSW-W June 2015 4.1 51.0 N, SW-WSW
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3.2.4 Temperature
Table 10 summarises monthly air temperatures.
Table 10: Monthly Minimum, Average and Maximum Air Temperatures
MONTH MINIMUM AVERAGE MAXIMUM AIR TEMP AIR TEMP AIR TEMP RECORDED (deg C) RECORDED (deg C) (deg C) July 2014 -0.1 10.9 23.8 August 2014 0.6 11.9 25.9 September 2014 3.7 14.8 29.8 October 2014 4.7 18.8 37.7 November 2014 8.6 21.8 42.4 December 2014 12.0 22.1 36.0 January 2015 11.2 23.4 34.8 February 2015 12.7 21.7 33.7 March 2015 9.2 21.4 36.7 April 2015 6.1 17.4 30.6 May 2015 4.6 14.6 26.5 June 2015 1.7 11.4 21.2
The graphical representation of the daily minimum, average and maximum atmospheric temperatures recorded for each month is provided in Appendix 2.
3.3 AIR QUALITY
3.3.1 Dust Control Procedures
Dust is controlled by a range of methods, including but not limited to:
Minimising disturbed areas, Prompt reshaping, topsoiling and revegetation; Watering haul roads and other dust generating roads; Watering dig faces prior to and during digging; Utilising water sprays on the drill; Water sprays on the ROM dump hopper and transfer point between the ROM and train loading bins; and Water sprays during train coal loading; Modifying operations during adverse weather conditions.
A number of Pollution Reduction Programs (PRP) required under EPL11701 have previously been completed. Work commenced on the PRP title Coal Mine Wind Erosion of Exposed Land Assessment which was due for submission in the next reporting period. Results will be made available on the Duralie Coal website in the following 2015-16 reporting period.
3.3.2 Dust Monitoring and Criteria
DCM has an approved Air Quality and Greenhouse Gas Management Plan (AQMP) that establishes a dust management strategy which:
Identifies air quality criteria; Outlines proactive and responsive dust management and control measures; Establishes dust management protocols; Formulates an air quality monitoring programme; Establishes stakeholder consultation protocols; and Details reporting and review requirements.
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In order to monitor air quality (dust) surrounding the mine site, DCM utilises a network of nine (9) static dust fallout gauges, four (4) high volume PM10 air samplers, one real time dust monitor (TEOM) and a meteorological monitoring station (i.e. weather station). The locations of these monitoring sites are shown on Figure 2 (Appendix 1).
Monthly dust fallout levels are measured so that dust deposition rates in g/m2/month can be determined at private or company owned residences surrounding the mine and within the village of Wards River. The EPA annual average limit for dust deposition is 4.0g/m2/month.
The high volume air samplers (HVAS) (PM10) are set up near company owned rural dwellings along Johnsons Creek Road (“Hattam” – located to the northeast of the mine, “Twin Houses” – located to the east of the mine and “High Noon” – located to the south of the mine). Additionally, a HVAS unit is located on private land along the Bucketts Way (“Edwards” – located west of the mine). Sampling occurs for a 24 hour period every 6 days in accordance with AS 2724.3. The EPA goal for air quality is an annual average limit of 30ug/m3/day and a National Environmental Protection Measure (NEPM) 24- hour average limit of 50ug/m3/day.
A Tapered Element Oscillating Microbalance (TEOM) analyser measuring PM10 and PM2.5 continuously began measuring dust levels in April 2012. Following the monitoring of 12 months real-time dust the data was analysed to develop dust management trigger levels which has been implemented in a dust management protocol in accordance with the AQMP. The real-time dust system provides a management tool to alarm operations when dust emissions have potential to exceed licence criteria and management controls can be implemented in accordance with a hierarchy of controls.
3.3.3 Review of Dust Monitoring Results
3.3.3.1 Dust Deposition Gauges
Table 11 shows the dust deposition results for nine (9) dust deposition gauges. Gauge D7 is located within the Village of Wards River.
Table 11: Dust Deposition Gauge Results
Jul-14 Aug-14 Sep-14 Oct-14 Nov-14 Dec-14 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 D3 2.0 3.2 4.3V,I,O 0.9 1.1 2.0 0.8 1.1 0.7 0.8 0.4 0.5
D4 1.2 0.6 0.4 0.7 0.9 2.0 0.5 0.4 0.2 0.4 0.4 0.2
D5 1.7 0.7 1.2 9.2B,V 5.6V,I,O 3.0 1.2 9.4I,S 3.1 0.9 3.4 7.2B,S D7 0.7 0.2 0.5 1.3 2.5 0.7 0.6 0.4 1.0 0.5 0.5 0.4 D8 0.8 0.2 0.5 1.0 1.0 5.5V,O nr 0.6 0.6 0.7 0.6 0.4 D9 0.9 0.6 1.0 1.3 1.2 4.2V,I,O 0.7 0.7 2.4 2.6 0.9 0.5 D10 0.8 1.6 1.6 1.0 1.7 2.5 1.4 1.0 2.4 1.8 0.7 0.7 D12 0.5 0.9 0.8 2.1 1.9 3.0 0.8 1.0 2.8 1.3 1.4 1.2 I,S D13 24.0 1.8 5.5V,I,O 5.9V,I,O 0.9 1.5 1.4 2.7 7.7V,I,S 0.7 3.1 2.3 EPA limit 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Notes/excluded results, Visual Description Guide: D=Dirt: Subhedral to euhedral crystalline grains including fine sand, clay and other fine mineral particulates. C=Coal: Black sharp angled grains with glossy conchoidal fractures or dull with cellular feature. I=Insects: Whole insects eg spiders, ants, moths or outer parts of insects including wings, legs and exoskeletons. S=Polysaccharide Slime: Slimy gelatinous material including decomposed soft body parts of insects and vegetation. V=Vegetation: Plant debris and algae including trichomes, decomposed organic matter and charred particulates showing characteristic cellular plant structures. B=Bird droppings: The most common contamination. O=Other contaminants not included above. nr = No result
Dust levels recorded had an average value of 1.3 g/m2/month (contaminated results not counted). On no occasion (after excluding contaminated results) during the reporting period did a deposition gauge result exceeded 4 g/m2/month. Elevated values were at times affected by various degrees of contamination from insects, bird droppings, vegetation (seeds/grasses) and algae. On one occasion during the reporting period a dust gauge returned ‘no result’. This was gauge D8 in January 2015 due to the gust gauge jar being broken in transit.
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The results should be compared with the EPA annual average upper limit of 4 g/m2/month. Nil gauges were exceeding the criteria at the end of the reporting period. Graphical representation of dust gauge results is provided in Appendix 3. Note that this graph includes all results including those with significant quantities of non-dust contamination. Contamination of all samples routinely occurred, primarily from bird droppings, insects and vegetation. Graphical representation of the annual rolling averages for dust deposition gauges is provided in Appendix 3.
Results of depositional dust monitoring were generally similar to previous reporting periods and are in concurrence with the Duralie Environmental Assessment (EA) (2010) which predicts the annual average criteria of 4 g/m2/month will not be exceeded at any receiver and that project only incremental increases in annual average dust deposition will not exceed the applicable 2 g/m2/month EPA criterion at any receiver.
3.3.3.2 High Volume (PM10) Dust Samplers
Table 12 shows the PM10 high volume air sampler (HVAS) monitoring results for the four HVAS in ug/m3/day (24 hours) for the monitoring sites at “High Noon”, “Twin Houses”, “Hattam” and “Edwards” during the reporting period.
Analytical data indicated that all monitoring locations (in terms of monitored days) did not exceed the National Environmental Protection Measure (NEPM) of 50 ug/m3/day during the reporting period listed under Condition 19, Schedule 3 of the DEP Approval.
The results during the reporting period by monitoring location were: “High Noon” 1 to 37 ug/m3/day, “Twin Houses” 1 to 32 ug/m3/day, “Hattam” 1 to 21 ug/m3/day and “Edwards” 1 to 33 ug/m3/day. Graphical representation of HVAS results are provided in Appendix 3.
Table 12: High Volume Air Sampler (PM10) Results
Date High Noon Twin Houses Hattam Edwards 3-Jul-14 9.5 3.4 9 10.7 9-Jul-14 15.5 1.9 11.8 12.3 15-Jul-14 7.6 12.2 7.2 5.2 21-Jul-14 5.1 7.9 5.1 6.4 27-Jul-14 5.4 8 4.5 5.5 2-Aug-14 7.3 12.1 10.5 9.8 8-Aug-14 9.6 16.7 10 10.2 14-Aug-14 13 19.4 12.8 12.6 20-Aug-14 9.1 11.7 8.6 9.8 26-Aug-14 2.8 5.4 4.5 3.4 1-Sep-14 5 7.9 5.1 6.7 7-Sep-14 4.2 4.3 4.3 5.3 13-Sep-14 1 6 2 3 19-Sep-14 3 13 8 13 25-Sep-14 2 5 5 6 1-Oct-14 14 20 12 17 7-Oct-14 24 28 20 26 13-Oct-14 13 11 11 13 19-Oct-14 5 6 6 6 25-Oct-14 19 15 18 15 31-Oct-14 37 32 17 33 6-Nov-14 18 15 14 14 12-Nov-14 12 9 9 10 18-Nov-14 13 16 15 15
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Date High Noon Twin Houses Hattam Edwards 24-Nov-14 22 16 17 20 30-Nov-14 15 8 17 10 6-Dec-14 11 <1 6 3 12-Dec-14 19 nr 9 9 18-Dec-14 26 nr 21 18 24-Dec-14 29 nr 21 19 30-Dec-14 19 nr 21 18 5-Jan-15 11 3 11 9 11-Jan-15 5 3 3 3 17-Jan-15 7 6 5 25 23-Jan-15 13 10 8 16 29-Jan-15 11 9 9 9 4-Feb-15 4 4 4 9 10-Feb-15 6 5 1 10 16-Feb-15 14 6 7 10 22-Feb-15 8 4 3 5 28-Feb-15 6 4 5 10 6-Mar-15 12 21 16 20 12-Mar-15 12 12 12 17 18-Mar-15 11 11 13 10 24-Mar-15 8 7 8 9 30-Mar-15 6 5 5 5 5-Apr-15 4 3 4 2 11-Apr-15 4 7 7 7 17-Apr-15 21 22 17 18 23-Apr-15 4 4 5 5 29-Apr-15 3 2 1 2 5-May-15 6 2 1 3 11-May-15 7 8 1 7 17-May-15 2 2 2 1 23-May-15 6 8 3 10 29-May-15 3 2 5 2 4-Jun-15 4 9 6 8 10-Jun-15 6 5 5 6 16-Jun-15 5 2 4 3 22-Jun-15 3 1 2 2 28-Jun-15 3 3 3 2 nr = HVAS did not run due to electrical fault
Graphical representation of the annual rolling average for the four HVAS during the reporting period is provided in Appendix 3. The HVAS rolling averages were highest at the start of the reporting period and generally decreased. The rolling average at the end of the reporting period for “High Noon” was 10.0, “Twin Houses” was 8.9, “Hattam” was 8.5 and Edwards was 10.0 ug/m3/day. Thus, annual averages for all sampling locations were below the 30 ug/m3/day EPA limit. All HVAS recorded higher levels than usual for the 31st October 2014 due to bushfires and thick smoke in the area at this time.
Results of HVAS monitoring are in concurrence with the Duralie Environmental Assessment (EA) 3 (2010) which predicts the annual average PM10 criteria of 30 µg/m will not be exceeded at any 3 receiver and that project only 24 hour PM10 concentrations will not be above the 50 µg/m EPA assessment criteria at any privately owned receiver with the exception of “Hattam” which is in close proximity to the mining operations. “Hattam” did not exceed the 50 µg/m3 24 hour limit on any occasion during this reporting period. HVAS results at all other locations did not exceed the 50 µg/m3 EPA assessment criteria on any occasion during the reporting period. The HVAS annual rolling averages
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3.3.3.3 TEOM (PM10)
A Tapered Element Oscillating Microbalance analyser (TEOM) which measures PM10 on a real-time continuous basis was installed by DCPL in April 2012. 24 hour average results for the reporting period and graphical representation of the running/cumulative average of PM10 results are provided in 3 Appendix 3. The annual average from 1 July 2014 to 30 June 2015 is 11.6 ug/m for PM10. The TEOM results are generally consistent with those measured by the HVAS units. The TEOM results continue to be utilised as a management tool for operations to determine proactive and reactive dust controls.
3.3.4 Reporting
Air quality data continues to be provided quarterly to the CCC and is also made available in the EPL11701 monitoring data spreadsheet on the Duralie Coal website.
3.3.5 Complaints
One (1) air quality related complaint was received during the reporting period. A detailed complaints list is provided in Appendix 6.
3.4 SEDIMENT AND EROSION CONTROL
Activities in relation to erosion and sediment control are undertaken in accordance with Condition 29 of the Duralie Extension Project Approval, the approved Water Management Plan, inclusive of sub- section 7 under the Surface Water Management Plan – the Erosion & Sediment Control Plan.
The mine had the following dedicated erosion and sediment control structures in use during the reporting period;
Two (2) rail siding sediment dams – designated as RS1 and RS6 Two (2) waste emplacement (rehabilitation) sediment dam – designated as VC1 and ESD Temporary Sediment Dams in advance of mining operations.
Sediment dam sizing is based on providing sufficient capacity to hold runoff from a 1 in 20 year, 1 hour duration rainfall event (for a given catchment). Runoff in excess of such an event will result in a dam spilling in accordance with the design criteria. The quality of water collecting within sediment dam is managed (where practical) to minimise suspended sediment load. This is achieved by a combination of promoting stabilising groundcover within the dam’s catchment and introduction of a flocking agent such as gypsum (as required).
Sediment dams are inspected following receipt of sufficient rain whereby such dams have the potential to spill. Diversion structures and drains are also maintained, including vegetation management, to ensure integrity of the structures and capacity for flow.
In addition to dedicated sediment dams, clean water is directed around disturbed areas (where practical) using diversion drains/bunds or in the case of Coal Shaft Creek, a creek diversion (refer discussion under Water Management) in order to minimise sediment laden water.
During the reporting period only one sediment dam spill occurred from RS1 on 21-Apr-2015 and water sampling was undertaken. The TSS level from RS1 was lower than the levels recorded upstream of operations at GB1.
It should be noted that at all times pumping (where possible) of sediment dams in order to prevent or
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The control of sediment generation and erosion is primarily controlled by:
Timely progressive rehabilitation and vegetation establishment on disturbed areas (e.g. completed sections of the overburden dump) to minimise the area exposed to erosion;
The direction of runoff from disturbed areas into sediment dams; and
The placement of silt fences, silt rolls (gravel filled), straw bales, geotextile fabric and/or rock in order to either trap or restrict the generation of silt or to dissipate flow energy.
All elements of sediment control are regularly monitored and maintained. Sediment dams are cleaned out when the storage volume is substantially reduced by sediment deposition (i.e. when 30% of storage volume is lost to sediment build up) and inspected after major rainfall events.
Sloping areas under rehabilitation are stabilised by structural controls such as bench drains and contour banks (if required) to break up the effective slope length exposed to erosion. Final slopes will generally not exceed 14 degrees which will aid in the control of erosion and sediment generation.
Inspection of diversion structures and sediment control dams occurred during and following the heavy rainfall during April. The site contained all mine water on site within its water management system and control structures remained effective. A number of minor remediation repairs were undertaken to the clean water diversions above AD2 and the Main Water Dam.
3.5 SURFACE WATER
3.5.1 Surface Water Management
Surface water management is divided into the management of clean and mine water as outlined below. Section 3.5 covers management of runoff from the overburden dump and sediment and erosion control. Surface water is managed in line with the approved Water Management Plan under Condition 29, Schedule 3 of the DEP Approval.
3.5.1.1 Clean Water Management
The main objective of clean water management is the segregation of clean from mine water by the construction of diversion drains around disturbed areas, thereby minimising the quantity of ‘dirty’ water generated.
Surface water controls aim to prevent clean runoff water from entering the open mining pit and overburden dumping areas where practical. The main structures are:
Diversion of Coal Shaft Creek. The diversion channel (built in stages) is required until the creek can be re-established at the conclusion of mining;
Main Water Dam (MWD) diversion drain. This drain intercepts runoff from the catchment above the MWD and delivers that water to Coal Shaft Creek;
Auxiliary Dam 1 (AD1) and Auxiliary Dam 2 (AD2) diversion drains;
Clareval western diversion drain;
Flood control embankments to prevent inundation of mining areas;
A culvert under the Main Coal Haul Road which allows Coal Shaft Creek to flow through the
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site; and
Various runoff control drains/bunds about disturbed areas, designed to divert clean water runoff around those areas.
The main elements of the clean water diversion system are shown in Figure 3 (Appendix 1).
The clean water diversion systems operated effectively during the April rainfall event. Inspections of diversion structures were undertaken during and after rainfall. Remedial works were completed to erosion identified within the diversion drains during the reporting period.
3.5.1.2 Dirty Water Management
Dirty water management refers to the control, collection and re-use of water which may have become contaminated by mining operations and associated activities or which by its nature is considered to be undesirable for release to the environment. This water comprises mine water and sediment laden/turbid water. Mine water is water that has come into contact with mining activities. Sediment laden/turbid water has come into contact with disturbed areas but predominantly not core mining areas.
Mine waters are typically characterised by higher salinity and on occasion lower pH. Sediment laden waters are characterised by elevated suspended solids and elevated turbidity.
During the April rainfall event all mine water was contained on site and no spills occurred from mine water storage dams.
The main objectives of the dirty water control facilities are:
On site storage to prevent escape to Coal Shaft Creek and Mammy Johnsons River; and Management of the stored quantity of dirty water by irrigation.
The principal sources of ‘dirty’ water are:
(a) Mine Water
Incident rainfall Groundwater seeping into mining pits; Rainfall induced runoff and seepage from active sections of the overburden dump; and Rainfall induced runoff from the Industrial Area.
(b) Sediment Laden Water
Rainfall induced runoff from roads; Rainfall induced runoff from areas stripped of topsoil (typically exposing clays); Rainfall induced runoff from areas yet to adequately vegetate within sediment dam catchments; and Direct rainfall falling on sediment laden water storages.
Dirty water uses and losses are:
Evaporation and seepage losses from water storages; Haul road dust suppression; Railed coal dust suppression; Water retained in product coal railed to the Stratford Mine; and Stored water applied to land via irrigation (evapotranspiration) including evaporative sprays.
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The dirty water storages on site are:
Main Water Dam (MWD) Auxiliary Dam 1 (AD1) Auxiliary Dam 2 (AD2) Sediment Dam VC1 (waste dump) Sediment Dams RS1 and RS6 (rail siding dams)
The locations of mine and sediment laden water storage areas are shown in Figure 3 (Appendix 1).
3.5.2 Surface Water Monitoring
DCM monitors surface water quality on and surrounding the mine site by sampling from a series of selected locations. These locations comprise both streams and water storage structures. A meteorological monitoring station (i.e. weather station) provides site rainfall data. The locations of these monitoring sites are shown on Figure 2 (Appendix 1).
Surface water monitoring is conducted in accordance with the approved Duralie Coal Mine Water Management Plan and the EPA Environment Protection Licence (EPL) 11701.
Surface water is sampled and analysed on a weekly, monthly, event basis or following a sediment dam spill.
Collected waters are analysed for a suite of physical and chemical parameters. Results are compared with the Australian and New Zealand Environment and Conservation Council (ANZECC) Guidelines for Fresh and Marine Water Quality (2000) (Aquatic Ecosystems Table 3.4.1 referencing slightly to moderately disturbed systems) and EPA requirements. Use of the Aquatic Ecosystems criteria is considered of most relevance.
3.5.2.1 Review of Water Monitoring Results
3.5.2.2 Local Streams
Reference should be made to accompanying data tables provided in Appendix 4:
SW2 – Coal Shaft Creek (CSC) SW2 Rail Culvert – Coal Shaft Creek SW6 – Former RS3/4 Culvert SW9 – Un-named Tributary (UNT) SW10 – Coal Shaft Creek GB1 – Mammy Johnsons River (MJR) Highnoon – Mammy Johnsons River Site 9 – Karuah River (KR) Site 11 – Mammy Johnsons River Site 12 – Mammy Johnsons River Site 15 - Mammy Johnsons River Site 19 – Karuah River
Comments on analysed parameters during the reporting period are as follows:
pH at all sites was generally within the ANZECC guidelines. Some slight exceedences of the upper guideline occurred throughout the reporting period at several sites. pH ranged from 6.5 (SW11, 23/03/15) to 8.8 (Site GB1, 2/4/15). Electrical conductivity (EC) across all sites ranged about the ANZECC nominated band. EC above the ANZECC range is attributed to lower stream flows and groundwater influence under low flow regime (especially obvious during periods of drought). EC was generally higher within
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Mammy Johnsons River than in the Karuah River, a trend which has been observed in previous monitoring periods. EC was generally higher within Coal Shaft Creek when compared to Mammy Johnsons River which has also been observed in previous reporting periods. Turbidity readings were generally low at all sampling locations, with the exception being when flows were high after rainfall events. Total suspended solid (TSS) results in terms of average concentrations were generally similar within Mammy Johnsons and Karuah Rivers. High Noon (MJR) demonstrated the highest TSS result. There is no stated ANZECC guideline for TSS. Elevated TSS results typically were recorded during high flow events. Sulphate concentrations recorded at all sites were generally low (no stated ANZECC guideline). The highest sulphate concentration recorded (264 mg/l) was for a sample collected at Site SW6 on 20 January 2015. Manganese concentrations recorded were generally low and within the ANZECC guideline. However, concentrations above the ANZECC guideline were recorded in one sample taken from Site 12 (5.02 mg/l; 27 November 2014 under trickle flow). Iron concentrations at all sites were typically quite low (no stated ANZECC guideline). Highest concentration recorded (8.51 mg/l) was for a sample collected at SW10 on 18 June 2015. Zinc concentrations at all sites were also generally low. However, zinc results were quite commonly in excess of the ANZECC guideline which is extremely low. Highest concentration recorded (0.091 mg/l) was for a sample collected at SW2 RC on 27 November 2014. Aluminium concentrations at all sites were generally low. Again, the ANZECC guideline for this metal is quite low. As such, the ANZECC guideline was exceeded on a regular basis across multiple sites. The highest reading recorded was from SW10 on 18 June 2015 (8.14 mg/l). For calcium, magnesium and chloride concentrations there are no stated ANZECC guidelines. Calcium concentrations ranged from 3 to 53 mg/L and magnesium concentrations ranged from 2 to 38 mg/L. Chloride concentrations were reasonably variable across the monitored sites (between 4 and 124 mg/l – maximum chloride concentration occurring at Site 27 November 2014). Elevation in chloride concentration is routinely observed under low stream flows.
The above results were consistent with previous year’s results. Some outlying results were identified and explanations are provided below:
Highnoon and GB1 recorded low pH levels on 27 May 2015. These were noted as anomalous readings and may have been caused by faulty equipment. The results were unable to be verified. EC was elevated on occasion, throughout the reporting period, at South Arm MWD Diversion Drain. The South Drain is controlled by the first flush system and when the EC level is above 1326µS/cm in the South Drain, flow is diverted to the Main Water Dam. These EC results are consistent with historical results. TSS was elevated at SW2 on 22 and 23 April and 7 May 2015 and at SW6 on the 22 April. Site 11, Site 12, Highnoon and GB1 had elevated TSS levels on 22 May 2015. Each of the elevated results occurred after a discharge event and flow was noted as being high. The elevated TSS results are likely to be caused by runoff due to high rainfall during April and May 2015 and no trend was identified between sites upstream and downstream of the operations.
Comments on extended suite of analysed parameters during the reporting period are as follows:
Analytes which do not exceed ANZECC guidelines at any sampled site:
Arsenic, Cadmium, Nickel, Boron, Mercury, Silver, Ammonia.
Analytes which do exceed ANZECC guidelines at sampled sites:
Copper – exceedences recorded at all sites except Site 15. The Greatest exceedence was for a sample taken at Highnoon 20 January 2015 (0.08mg/l). Chromium - exceedences recorded at all sites except Site 15 and SW9. Lead – exceedences recorded at Sw10, Site 9, Site 11 and Site 12. Selenium – an exceedence was recorded at SW2 RC on 9 December 2015.
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Generally, analytical results for routine monitoring displayed a similar structure to the previous reporting period. As stated above some results were quite commonly in excess of the ANZECC guidelines. The surface water monitoring results show natural fluctuations and no observable trends have been identified between upstream and downstream sites.
The Duralie Coal EIS 1996 indicated that water quality in Mammy Johnsons River was variable, but was generally good. It was also found that the salinity of the stream was higher during periods of low flow and generally showed a relative reduction in EC during higher flow periods (Gilbert, 2010). The current monitoring results are consistent with these observations.
Historical monitoring data presented in the DCM Environmental Assessment, Surface Water Assessment (Gilbert, 2010) show that Coal Shaft Creek is generally more saline than Mammy Johnsons River and the Karuah River. Results during the reporting period concur with these observations. It is considered that Coal Shaft Creek is generally more saline due to its ephemeral nature and the outcropping/sub-cropping of coal seams within the catchment.
In general, surface water monitoring results were consistent with predictions made in the Environmental Assessment (2010).
3.5.2.3 Mine Water
Mine water comprises water that is generated within the mine workings, waste rock emplacements (prior to reshaping and topsoiling), storage areas for such water and runoff from areas where coal is handled. Mine water is generally characterised by elevated EC, elevated sulphate concentrations and low turbidity/TSS.
The three principal mine water storage areas are the Main Water Dam (sampling location SW3 major), Auxiliary Dam 1 (AD1) and Auxiliary Dam 2 (AD2). Monitoring of mine water quality is also conducted within the Weismantel pit (sampling location SW4) and the Clareval pit (sampling location Clareval). Monitoring for SW3 (major) during the reporting period indicated, on average, a moderate EC (3121 uS/cm), slightly alkaline pH (8.1) and low miscellaneous metals concentration. SW4 was not monitored during the reporting period due to no safe access into the pit; however monitoring was conducted within the Clareval pit. The electrical conductivity (EC) performance indicator in Table 15 of the Surface Water Management Plan (SWMP) was exceeded during previous 2013 and 2014 reporting in the MWD. As a requirement of the SWMP, the increasing salinity triggered an assessment of performance measure. Hollingsworth (2014) concluded that there has been no significant detrimental effect on soil properties, or suitability of soil in irrigated areas for future agricultural use. Hollingsworth (2014) further recommended the EC performance indicator could be adjusted to 9dS/m to maintain agricultural land values. The SWMP has been revised accordingly with recent soil monitoring in 2015 concluding that there has been no significant detrimental effect on soil properties, or suitability of soil in irrigated areas for current or future agricultural use (refer section 3.7). Grazing continued to occur during the report period within the approved irrigation areas.
3.5.3 Biological Monitoring
As part of Duralie Coal’s environmental monitoring program, Invertebrate Identification Australasia was commissioned to conduct biological monitoring of the streams near the mine. An environmental assessment of the aquatic ecosystems of Mammy Johnsons River and the Karuah River above the junction with Mammy Johnsons River was made prior to the commencement of mining operations. Biological monitoring has been conducted during approximately February/March and September each year since the start of mining operations. Monitoring during this reporting period was conducted during September 2014 and February 2015 and involved sampling from seven sites in both September and February. The September survey identified a total of 52 genera in 39 families. The results for the February survey were 60 genera in 44 families. Both the September 2014 and February 2015 report concluded that;
“ the results from the current survey suggest that the overall; biodiversity and river environmental
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conditions have remained very good and that there are no apparent adverse effects on the aquatic macroinvertebrate fauna in the Mammy Johnsons River as a result of any activities arising from the operations of the Duralie Mine. The only significant impact to the river in addition to the very low flows was presence of cattle at site M1 that has impacted water quality, habitat availability and the riverbed, bank and riparian structure.” (Invertebrate Identification Australasia 2014 and 2015).”
Biodiversity values have been generally similar to those noted from prior reporting periods. Biological monitoring reports to date have not indicated any significant adverse effects on the aquatic ecosystem as a result of the mine’s operations as per predictions made in the environmental assessments.
The September 2014 and February 2015 Macroinvertebrate Survey reports can be made available on request.
3.5.4 Riparian Vegetation Monitoring
The Riparian Vegetation “Health” Monitoring program is conducted in accordance with the Duralie Coal Mine Water Management Plan). Visual monitoring and photography is conducted in order to detect any potential change in the quality and quantity of riparian vegetation. The unnamed Tributary, Coal Shaft Creek and Mammy Johnsons River are monitored on an annual basis for signs of leaf scorching, desiccation and dieback. Riparian health monitoring includes the development of a photographic database of riparian vegetation at fixed photo points.
Riparian vegetation health monitoring was conducted in September 2014. Results are presented in Table 14. Scores are based on the scoring system presented in Table 13. Three of the four sites (M1, M4, M8) scored low for desiccation. Three of the four sites (M1, M4, M3) scored low for scorch. Signs of leaf scorch and dieback were observed at M8 and some desiccation and scorch was observed at M3. Results for the reporting period are generally similar to results from last year with some minor differences which are detailed below.
MJR1 (M1); A decrease in dieback from score 2 to score 1
MJR2 (M4); A decrease in scorch from score 1 to score 0 An increase in desiccation form score 1 to score 2
CSC (M3); An increase in scorch from score 1 to score 2 An increase in desiccation from score 1 to score 3
UNT (M8); An increase in scorch from score 3 to score 5
Table 13: Riparian Health Scoring System
Leaf Scorch Desiccation Dieback Rank Description Rank Description Rank Description 0 No signs of leaf scorch 0 No signs of desiccation 0 No signs of dieback 1 <5 minor branches affected 1 <5 minor branches affected 1 <5 minor branches affected 2 2 2 3 3 3 15 moderate branches affected 4 4 4 5 25 moderate branches 5 25 moderate branches 5 Stage 1: Canopy thinning affected affected 6 6 6 7 7 7 Stage 2: Crown defoliation 8 8 8 9 9 9 Stage 3: Epicormic growth 10 >50 major branches affected 10 >50 major branches affected 10 Stage 4: Tree death Note: Standing in a central point leaf scorch, desiccation and dieback are scored from the visible range of vegetation.
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Table 14: Riparian Vegetation Health Monitoring Results – September 2014
Site Photo number Coordinates Scores Comments & aspect Easting Northing Scorch Dessication Dieback MJR1 1 East bank 400699 6431029 1 1 1 Moderate flow (M1) looking N 2 West bank 400694 6431026 looking S MJR2 1 East bank Refer gauge Refer 0 2 1 Recent rain (M4) looking N board opposite and moderate 2 West bank gauge flow. Fresh looking S board growth on most trees CSC 1 creek bed 400770 6425411 2 3 1 Some (M3) looking NW dessication & 2 Creek bed 400770 6425411 scorch looking S observed 3 Upper bank 400772 6425420 looking NW 4 Upper bank 400772 6425420 looking S UNT 1 creek bed 4000205 6430116 5 1 3 Recent flow, (M8) looking W low dry spell 2 Creek bed 4000205 6430116 prior. looking E Signs of leaf 3 North upper 400226 6430135 scorch and bank looking W dieback mainly 4 North upper 400226 6430135 bank looking E
3.5.5 Ecotoxicity Testing Program
In accordance with the Surface Water Management Plan and Condition 29(b) of Project Approval (08_0203), DCM undertook ecotoxicity testing of samples taken from selected water monitoring sites in Mammy Johnsons River, Coal Shaft Creek and Duralie Coal Mine Main Water Dam during 2014-2015. The ecotoxicity testing programme is required to be undertaken quarterly. The ecotoxicity tests were undertaken by Ecotox Services Australasia during July 2014 and January 2015. A review of the monitoring data will be undertaken in mid-2016 where the monitoring program may be revised if warranted. A review of the monitoring data collected during 2013-2014 concluded the following;
“The results for aquatic testing of five aquatic species of Coal Shaft Creek and Mammy Johnsons River at four sampling times during 2013-2014 show that there was no evidence for any significant toxicity and no connection with any effects from mining. The Main Water Dam showed sporadic effects to some test species but not all. This is considered to indicate the potential for minor effects to occur on an on- going basis but not affecting the offsite natural waters. If the Main Water Dam is discharged, it should be tested for aquatic toxicity.
3.6 GROUNDWATER
3.6.1 Groundwater Management
DCM monitors groundwater quality on and surrounding the mine site by sampling from a series of selected locations (bores). The location of these bores is shown in Figure 2 (Appendix 1).
Groundwater monitoring is conducted in accordance with the Duralie Coal Mine Water Management Plan (DCWMP).
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Collected waters are analysed for a suite of physical and chemical parameters. Results are evaluated for observable trending.
3.6.2 Groundwater Monitoring
A summary of groundwater monitoring results for the reporting period can be found in Appendix 4. Comments on analysed parameters for monitoring conducted during the reporting period are as follows:
Depth to groundwater was comparable with recent historical data for most monitored wells. However, bore DB4W continued to show recovery from aquifer drawdown (refer to Groundwater Depressurisation below). pH is comparable with historical data with fluctuations apparent. pH in the reporting period varied from a slightly acidic 5.7 (DB10W in December 2014) to a neutral 7.9 (DB11W in February 2015); Electrical conductivity generally showed a high degree of variability across many of the wells as has historically been the case. This would appear to reflect the cycle of dry and wet conditions. Shallow wells intercept generally low conductivity alluvial aquifers, whilst deep wells associated with coal measures generally have higher conductivity; Calcium and magnesium concentrations across all wells tended to fluctuate within reasonably tight ranges; Sulphate concentrations varied across wells. Well WR2 exhibited the widest range of any well spanning over 427mg/l; Aluminium concentrations are quite low (often being close to the limit of analytical detection) in all the deeper wells but comparatively higher in the shallower wells. The highest concentration recorded was 72 mg/l (DB3W in October 2014); Iron concentrations showed no common trend with rises and falls across wells generally. Concentrations showed a wide range from a low of 0.09 mg/l (SI3W) to a high of 72.9 mg/l (DB3W in October 2014); Manganese concentrations across all wells were not high with the highest being 4.74 mg/l within WR2 in February 2015; and Zinc concentrations were essentially low and not inconsistent with available historical data.
Groundwater quality results for the reporting period indicate results consistent for the reporting period with EA predictions and historical groundwater data trends.
It should be noted that the EA (2010) described groundwater in the Project area as being characterised by the following parameters/ranges:
pH – 6.0 to 8.0 Electrical conductivity – 100 to 7600 uS/cm
For this reporting period, the groundwater pH range for bores likely to be influenced by the coal measures was between 5.7 and 7.9. This is a generally similar range to that noted in the EA.
Similarly, the electrical conductivity range for the bores was 80 to 7440 uS/cm. These results are generally similar to and within the range noted in the EA.
Irrigation bores (SI Series) indicate no obvious signs of deep drainage generated from irrigation activities.
No indication of an increase in connectivity between alluvial bores and the deeper groundwater system has been observed based on monitoring results for water quality and groundwater table level.
The waste emplacements bores (WR Series) now in the second year of monitoring indicate signs of recharging of the backfilled void, particularly at WR1. This is consistent with the numerical modelling of the post-mining groundwater levels (EA 2010) which shows slow but complete recovery of the groundwater system over many decades and that the Clareval void, once filled with water, would act as a sink, while the Weismantel void lake would act as a flow-through lake system. Additional detail is
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3.6.3 Groundwater Depressurisation
Depth to water information from piezometer monitoring indicate that bore water levels are generally consistent between bores and are generally consistent with EA (2010) predictions.
The four bores to the west of the open cut pit (SI1W, SI2W, SI3W & DB6W) are all above or close to maximum predicted levels.
Results for the reporting period are provided in Appendix 4. In summary, hydrographic plots (Graph 1, Graph 2 and Graph 3), indicate that groundwater monitoring results for the period are generally consistent with predicted outcomes as assessed in the EA (2010). Further review occured in line with the GWMP where inflows to pits and water levels within bores were consistent with modelled predictions and indicators as per the GWMP. No trigger levels or exceedance of performance measures were identified during the reporting period. No complaints related to groundwater were received during the reporting period.
Further work is scheduled to occur in the 2015-16 reporting period in accordance with Condition 29 (c) of the DEP Project Approval to investigate the mine spoil and alluvium interface.
3.6.4 Reporting
Water monitoring data continues to be provided quarterly to the CCC and is also made available in the EPL11701 monitoring data spreadsheet on the Duralie Coal website.
3.7 IRRIGATION
The Duralie Coal Mine operates under a continual stored water surplus. The project approval precludes the disposal of mine water from the approved project approval boundary.
Irrigation currently consists of a substantial network of fixed sprays in the Type I, II and IV irrigation areas supported by evaporative fans in the Type I and Type V irrigation areas (waste rock emplacement) only. No irrigation currently occurs within Type III irrigation areas located in the catchment of Coal Shaft Creek above Dam 3.
In accordance with the WMP, irrigation system management controls were maintained during the reporting period. An overview of the site irrigation system including the fixed sprays and areas are outlined in the WMP which is available on the Duralie Coal website.
During the 2014 calendar year a total of 1272ML of mine water was irrigated within Type I, II, IV & V areas (compared with 1336 ML 2013 calendar year). During the reporting period (1 July 2014 to 30 June 2015) a total of 1694ML was irrigated within the approved irrigation areas.
Water quality for the Main Water Dam (“SW3”) was undertaken on a monthly basis during the review period. Analytical results are available on the Duralie Coal website under monitoring results and also in Appendix 4. Results within the MWD did exceed the performance indicators for salinity and pH however this was assessed against the performance measure of soil properties by Horizon Environmental (refer extract within 3.7.1 below).
3.7.1 Irrigation Area Soil and Vegetation Monitoring
Irrigation area monitoring is conducted in accordance with the DCM Water Management Plan (WMP) which incorporates the Irrigation Management Plan (IMP) as an attachment of the Surface Water Management Plan (SWMP).
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2015 monitoring (Horizon Environmental, 2015) concluded that there has been no significant detrimental effect on soil properties, or suitability of soil in irrigated areas for future agricultural use, i.e. grazing on native pasture.
“Of the potential heavy metal and metalloid contaminants screened, the concentration of manganese in the main water dam (MWD) warranted a site-based assessment of cumulative contaminant loading to the irrigation area. Manganese is a plant nutrient and there is no contaminant loading limits (CCL). Manganese concentrations were naturally high in the soils of volcanic origin. Mn loading under irrigation is not discernable from the influence of background conditions.
Irrigation water quality has improved in terms of lower salinity and sodicity since the 2014 monitoring round. The predominance of sulfate anions over chloride and the increase in calcium relative to sodium cations may mitigate salinity effects on soil structure and vegetation health. The risks from land application of water from the MWD to soil and pasture quality appear to be low. However, mining activity appears to affect the quality of the water in the MWD and may need to be take into account in the future.
Soil salinity has increased in irrigation areas relative to the reference sites. The size of the increase is unlikely to cause measureable decreases in pasture productivity in the short or long term. However, the effects of irrigation with saline water from the MWD on pasture condition need to be monitored. Trends could be assessed from time series analysis using control charts for irrigation and reference sites once four annual surveys have been completed.
The surface soils of the irrigation areas are relatively high in organic carbon. Irrigation appears to increase soil carbon content and total soil nitrogen, possibly by increasing pasture productivity during periods of drought. However, the surface soils have low levels of other major nutrients (extractable phosphorus and potassium) that will limit productivity. Also, micronutrients including Cu and Zn appear to be deficient in pasture soils.
Soil permeability and application rates in the irrigation areas were adequate for maintaining leaching of salts applied in irrigation out of the root zone. The soils were not dispersive. There may be a general lack of soil porosity to depth that may promote waterlogging. The lack of soil porosity at depth may be due to over-clearing for pasture. Deep ripping combined with revegetation or pasture improvement may improve salt leaching in the event that the salinity of applied irrigation water increases above 9 dS/m (9000µS/cm), or soil salinity (ECse) increases above 1.9 dS/m in the surface soil. However, the irrigated water supply from the MWD needs to be managed to prevent this occurring.
Pasture growth depends on a range of factors including grazing pressure, seasonal variation, as well as local soil conditions. However, there does not appear to be a detrimental effect on ground cover or pasture composition in the irrigated pastures compared with the dryland reference sites. Annual monitoring has provided a relative assessment of pasture condition over time.
Introducing grazing pressure in the Type I irrigation area during 2014-15 reduced the amount of rank grass and appears to have increased pasture vigor. Grazing also reduced the ground cover of more palatable introduced pasture species and increased the need for weed management. However, the grazed pasture is more actively growing and consequently more vigorously transpiring the applied water.
The pasture growth rate monitoring requirement in Section 6 of the Irrigation Management Plan has been questioned. Measuring pasture growth rates from an annual survey is neither practical nor relevant. Meaningful pasture growth rate measurements are made at a higher frequency to reflect changes in environmental growth factors, namely temperature, light and rainfall during the year using enclosures to exclude grazing.
Alternatively, the point-transect monitoring program we have used to describe pasture condition in terms of biomass, species mix and ground cover, is achievable and relevant to assess impact from irrigation with water from the MWD on land use.”
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3.7.2 Re-establishment of Coal Shaft Creek
No additional works associated with the design for the re-establishment of Coal Shaft Creek occurred during this reporting period. The proposed design concept for the post-mining alignment of Coal Shaft Creek currently comprises a reworked section of the existing Coal Shaft Creek diversion channel, a drop-down section outside the in-pit waste rock emplacement, and reconstructed section of the creek within a corridor within the in-pit waste rock emplacement at the southern end of the Weismantel open pit extent.
A photographic surveillance record of key structures along the existing Coal Shaft Creek diversion is undertaken annually and was conducted during December 2014. In general the CSC Diversion is stable and no signs of erosion or sedimentation have been identified. Maintenance activities including weed spraying and vegetation control was undertaken during the reporting period.
3.8 BIOREMEDIATION
DCM operates an onsite bioremediation area for hydrocarbon contaminated soil where biological degradation of hydrocarbons is used to reduce the hydrocarbon concentration in the soil to an acceptable level. The management of hydrocarbon contaminated soils is detailed in the Duralie Coal Pollution Incident Response Management Plan. A logbook is kept which covers deposition, maintenance and disposal of materials from the bioremediation area.
During the reporting period testing of the soils placed in the bioremediation facility was undertaken and soils with suitably low hydrocarbon levels were removed and disposed in the pit. Any new contaminated material was placed in the active cells in the bioremediation area.
3.9 MANAGEMENT OF BIODIVERSITY
The Duralie Coal Mine Annual Biodiversity Report contains a review of environmental performance and progress against the requirements of the Duralie Coal Biodiversity Management Plan (BMP). In accordance with Condition 33, Schedule 3 of the NSW Project Approval, DCM is required to implement the Offset strategy and achieve the broad completion criteria to the satisfaction of the Director-General of the DP&E. In order to track progression towards completion criteria, baseline monitoring was undertaken in 2013.
Annual monitoring was undertaken in May 2014 and a summary of the results were provided in the Landscape Function and Vegetation Structure for the Duralie Biodiversity Offset Report 2014. Following trial revegetation works which are scheduled for spring 2015, annual LFA monitoring will be undertaken again to assess progress and provide recommendations to develop an operational plan for the full offset revegetation with works scheduled to be undertaken during spring 2016.
In accordance with Schedule 3, condition 43 of the DEP Project Approval, the Duralie Coal Mine Annual Biodiversity Report is included in Appendix 7. A brief summary of main findings and conclusions are provided below:
Vegetation Clearance Report Areas cleared of vegetation during the reporting period included a strip along the western side of the Southern Limb south of Clareval pit. During the vegetation clearance no threatened species were observed or encountered. At the end of the reporting period a total of 44 tree hollows from 5 trees had been removed with equivalent habitat boxes reinstated accordingly.
Seed Collection and Propagation A detailed list of seed collected was shown in the 2014 Annual Biodiversity Report Appendix 2. At the end of the 2014 seed collection of 12kg of tree and shrub seed was still remaining as certain species were not available at the time of collection. These species will continue to be collected on an opportunistic basis.
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Salvaged and Reused Material for Habitat Enhancement Suitable trees and stumps salvaged and stockpiled for reuse occurred including vegetation mulched and incorporated into topsoil for rehabilitation.
Controlling Access and Managing Grazing During the reporting period contractors were engaged to undertake maintenance activities on access tracks, culverts, gates and fences. All livestock have continued to be excluded from the offset area with the exception of use for controlled ‘crash grazing’ in preparation for revegetation activities following assessment by a qualified consultant.
Weed Control and Monitoring Weed control activities were undertaken from October 2014 to April 2015 for the target species across all VMU’s within the offset areas. The trial revegetation works are now scheduled to be undertaken during Spring 2015 with additional weed management work planned to align.
Feral Animal Control and Monitoring During the reporting period a wild dog trapping program was undertaken in the area surrounding the Stratford Mine Site and nearby areas.
Nest Box Program Australian Museum Consulting (AMC) replaced 18 boxes specifically targeting the Squirrel Glider; and replaced other boxes on a like for like basis for any hollow bearing trees cleared during vegetation clearance operations (refer Section 3 of Appendix 7). Monthly monitoring of 106 additional nest boxes was undertaken. During September 2014 an additional 45 nest boxes were installed.
Bushfire Management Bushfire management tracks have been implemented in the offset areas. Fire was excluded from the offset areas, as per the BMP, for the first 3 years. Preparation is in progress for hazard reduction burning in the second half of 2015 calendar year.
Mammy Johnsons River Stabilisation Section 6.8 of the BMP includes a detailed design for the in-stream rehabilitation of a severely eroded section of Mammy Johnsons River prepared by Alluvium. No works commenced during the reporting period.
3.9.1 Complaints
No biodiversity related complaints were received during the reporting period. A full detailed complaints list is provided in Appendix 6.
3.10 GIANT BARRED FROG REPORT
Annual monitoring of the Giant Barred Frog population is conducted in accordance with the approved Duralie Coal Mine Giant Barred Frog Management Plan (GBFMP). The monitoring is undertaken to establish baseline data of the frog population and monitor whether a greater than negligible impact on the Giant Barred Frog population has occurred as a result of rainfall runoff from the mine’s irrigation areas. Monitoring results are used to assess the Project against performance measures detailed in the GBFMP which is available on the Duralie Coal Mine website.
The Annual Giant Barred Frog monitoring program has been undertaken since 2010. 2015 monitoring results concluded that:
“The Giant Barred Frogs in the Mammy Johnsons River catchment are widely distributed across that catchment… In areas where there has been a loss of riparian vegetation or there are ongoing agricultural impacts frog densities are lower than elsewhere in the catchment (and much lower when compared to the
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neighbouring control sites that are not affected by either of these impacts). The population of Giant Barred Frogs in the Mammy Johnsons River catchment has increased after the drought of 2013-2014 but is still lower than the first monitoring seasons. Area 2 (upstream of Coal shaft Creek) defied the trend and appears to still be showing signs of a slow decline in frog numbers.
To date, the Duralie Coal Mine has not yet begun irrigation activities associated with the Duralie Extension Project and as such, the Project has not presented a potential impact on the Giant Barred Frog population”.
The Duralie Coal Mine Giant Barred Frog Monitoring Report for 2015 is available on request from the Duralie Coal Mine environment and community department.
3.11 BLASTING
3.11.1 Blast Criteria and Control Procedures
Blasting is conducted in accordance with conditions 8-15 of Schedule 3 of the DEP Project Approval and respective EPL conditions.
Permanent blast monitors during the reporting period were located on the Schultz Property (Bucketts Way, south west of mine); Mahony Property; Fisher-Webster Property; and the former Weismantels Inn.
The blast monitor at the Mahony property was removed on the 16th September 2014 and a monitor installed at Moylan Property on the same day. An additional monitor above what is required under the Environmental Protection Licence was installed at the Bragg Property in May 2015. The location of blast monitoring units are shown on Figure 2 (Appendix 1).
EPL condition L5 state that overpressure caused by blasting at monitored locations may exceed 115 dB(L) for no more than 5% of blasts during the reporting period and must not exceed 120 dB(L) at any time. Similarly, ground vibration at monitored locations caused by blasting may exceed a peak particle velocity of 5 mm/s for no more than 5% of blasts during the reporting period and not exceed 10 mm/s.
In accordance with Condition 13(b) of the Project Approval, a dedicated blasting hotline is available to provide current scheduled blasting times for the DCM. Persons living within two (2) kilometres of an active or approved operational area may also request advice of scheduled blasting activities.
Building condition surveys of several privately owned dwellings located in the vicinity of the mine are routinely carried out by an independent structural engineer. In addition, surveys may be commissioned following an approach by a landowner concerned about dwelling damage which they consider may be related to mining activity (Condition 11, Schedule 3). During the reporting period, DCM received one request from a local landowner for a building inspection to be conducted which was subsequently withdrawn by the resident.
3.11.2 Review of Blast Monitoring Results
Airblast overpressure and ground vibration results for all blasts undertaken during the reporting period are provided in Appendix 5.
3.11.3 Overpressure Results
During the reporting period, there were no blasts events which exceeded the overpressure criteria limit of 120 dBL. Due to a private agreement with the Mahony residence which commenced on 30 October 2013, the Mahony blast monitor was removed and a replacement blast monitor was installed at the Moylan residence on the 16th September 2014 following variation of EPL11701 and the Blast Management Plan. An additional blast monitor, above what is required under licence conditions, was installed at the Bragg residence during May 2015.
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There were two (2) blasts where overpressure exceeded 115 dBL at the Mahony monitor prior to the removal of the blast monitor. In addition, one (1) blast recorded an overpressure above 115 dBL at the Fisher-Webster and Moylan monitors on 18 October 2014. The three exceedances were investigated and are below the allowed 5% of total blast exceedances in the annual monitoring period.
3.11.4 Review of Vibration Results
During the review period (period ending 30 June 2015) there were no blasts where ground vibration exceeded 5 mm/s.
The 2010 EA provides predictions on blast emissions for various residential receivers. The blasting predictions indicate that blasting emissions would generally comply with airblast criterion of 115 dBL and ground vibration of 5 mm/s at nearby private receivers. During the reporting period, predicted blast emissions were generally consistent with measured values.
3.11.5 Complaints
Thirteen (13) blast related complaints were received during the reporting period. A full detailed complaints list is provided in Appendix 6.
3.12 NOISE
3.12.1 Noise Criteria and Control Procedures
The current Noise Management Plan (NMP) was approved by the DP&E in June 2013 and provided for altered noise monitoring locations deemed necessary as a consequence of changes to property ownership. Designated monitoring locations resulting from consultation with the OEH in June 2011 are “NM1 Woodley”, “NM2 Zulumovsky North”, “NM3 Mahony” and “NM3 Fisher-Webster”.
Four (4) attended noise surveys were conducted during the reporting period. These surveys were conducted during July 2014, October 2014, February 2015 and April 2015.
A Sentinex real-time noise (RTN) monitor which continuously measures the noise emissions generated by mining operations has been operating since June 2012. The RTN system provides a management tool for operations to measure mine contribution noise emissions and implement management controls. Real time noise data is stored on the DCM company server and on an online repository. Further detail is provided in Section 3.13.4.
3.12.2 Review of Noise Survey Results
The summary results of the attended surveys are provided in Tables 15 to 22. Noise monitoring locations are shown on Figure 2 (Appendix 1). Noise Survey Reports are available at the Duralie Coal website (www.duraliecoal.com.au).
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Table 15: Contributed Mine Noise (LAeq15 min) During July 2014 Surveys
Monitoring Mine Mine Mine Noise Critera Excursion Contribution Contribution Contribution (day/evening/night) dB(A)
Location LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) for Day for Evening for Night 1-2/07/2014 1/07/2014 1-3/07/2014 NM1 Woodley Nil Nil 19, 26 35/35/35 0/0/0,0 NM2 Zulumovski Nth 35 41 47, 27 35/35/35 0/6/12,0 NM3 Mahony Nil 36 36, 26 35/35/35 0/1/1,0 NM4 Fisher-Webster 33 37 35, 25 35/35/37 0/2/0,0 REF1 Duralie Road 51 51 52, 45 NA NA Additional Monitoring Nil 19 25, 29 35/35/35 0/0/0,0 LocationWards River NA = not applicable
Table 16: Contributed Mine Noise (LA11 min) During July 2014 Surveys
Monitoring Mine Noise Criteria (night) Excursion Contribution dB(A)
Location LA1(1 minute) LA1(1 minute) LA1(1 minute) for Night 1-3/07/2014 NM1 Woodley 30, 32 45 0, 0 NM2 Zulumovski Nth 49, 33 45 4, 0 NM3 Mahony 40, 31 45 0, 0 NM4 Fisher-Webster 38, 30 45 0, 0 REF1 Duralie Road 54, 47 NA NA Additional Monitoring 31, 33 45 0, 0 Location Wards River NA = not applicable
Mine operating noise emissions were above the noise criteria at the Fisher-Webster property during the evening survey and the Mahony and Zulumovski residences during the evening and night 1 survey periods. Although the noise emissions from the operation of the mine were above the noise criteria these measurements are not considered an exceedance due to the presence of a temperature inversion, which exceeded the conditions set out in section L3.8 (a) of EPL 11701, in the vicinity of the mine and its surrounds during the measurements.
Table 17: Contributed Mine Noise (LAeq15 min) During October 2014 Surveys
Monitoring Mine Mine Mine Noise Critera Excursion Contribution Contribution Contribution (day/evening/night) dB(A)
Location LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) for Day for Evening for Night 29-30/10/2014 28/10/2014 28-30/10/2014 NM1 Woodley 23 26 18, 26 35/35/35 0/0/0,0 NM2 Zulumovski Nth 35 34 33, Nil 35/35/35 0/0/0,0 NM3 Mahony 30 Nil 22, 29 35/35/35 0/0/0,0 NM4 Fisher-Webster 25 30 35, 31 35/35/37 0/0/0,0 REF1 Duralie Road 49 53 41, 48 NA NA Additional Monitoring Nil 26 23, Nil 35/35/35 0/0/0,0 Location Wards River NA = not applicable
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Table 18: Contributed Mine Noise (LA11 min) During October 2014 Surveys
Monitoring Mine Noise Criteria (night) Excursion Contribution dB(A) Location LA1(1 minute) LA1(1 minute) LA1(1 minute) for Night 28-30/10/2014 NM1 Woodley 25, 28 45 0, 0 NM2 Zulumovski Nth 36, Nil 45 0, 0 NM3 Mahony 25, 35 45 0, 0 NM4 Fisher-Webster 40, 36 45 0, 0 REF1 Duralie Road 43, 50 N/A N/A Additional Monitoring 27, Nil 45 0, 0 Location Wards River NA = not applicable
Mine operating noise emissions were within the noise criteria at all monitoring locations for the day, evening and night 1 and 2 survey periods during the October 2014 compliance survey.
Table 19: Contributed Mine Noise (LAeq15 min) During February 2015 Surveys
Monitoring Mine Mine Mine Noise Critera Excursion Contribution Contribution Contribution (day/evening/night) dB(A)
Location LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) for Day for Evening for Night 10-11/02/2015 10/02/2015 10-12/02/2015 NM1 Woodley 29 30 25, 23 35/35/35 0/0/0,0 NM2 Zulumovski Nth 26 24 21, 23 35/35/35 0/0/0,0 NM3 Mahony 36 37 22, 25 NA NA NM4 Fisher-Webster 26 22 20, 23 35/35/37 0/0/0,0 REF1 Duralie Road 51 50 45, 50 NA NA Additional Monitoring Location Wards River Nil Nil Nil, Nil 35/35/35 0/0/0,0 NA = not applicable
Table 20: Contributed Mine Noise (LA11 min) During February 2015 Surveys
Monitoring Mine Noise Criteria (night) Excursion Contribution dB(A)
Location LA1(1 minute) LA1(1 minute) LA1(1 minute) for Night 10-12/02/2015 NM1 Woodley 32, 26 45 0, 0 NM2 Zulumovski Nth 26, 27 45 0, 0 NM3 Mahony 27, 31 NA NA NM4 Fisher-Webster 29, 27 45 0, 0 REF1 Duralie Road 46, 51 NA NA Additional Monitoring Nil, Nil 45 0, 0 Location Wards River NA = not applicable
Mine operating noise emissions were below the corresponding noise criteria at all monitoring locations for the day, evening, night 1 and night 2 survey periods during the February 2015 compliance survey.
It is concluded that the noise emissions produced by DCM during the February 2015 noise surveys complied with all noise level criteria.
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Table 21: Contributed Mine Noise (LAeq15 min) During April 2015 Surveys
Monitoring Mine Mine Mine Noise Critera Excursion Contribution Contribution Contribution (day/evening/night) dB(A)
Location LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) LAeq(15 minute) for Day for Evening for Night 28/04/2015 & 28/04/2015 & 28-30/04/2015 29/04/2015 29/04/2015 NM1 Woodley Nil 25 22, 23 35/35/35 0/0/0,0 NM2 Zulumovski Nth 31 33 29, 23 35/35/35 0/0/0,0 NM3 Mahony 35 25 24, 22 NA NA NM4 Fisher-Webster 29 29 30, 29 35/35/37 0/0/0,0 REF1 Duralie Road 53 49 46, 52 NA NA Additional Monitoring Nil 22 24, 20 35/35/35 0/0/0,0 Location Wards River NA = not applicable
Table 22: Contributed Mine Noise (LA11 min) During April 2015 Surveys
Monitoring Mine Noise Criteria (night) Excursion Contribution dB(A)
Location LA1(1 minute) LA1(1 minute) LA1(1 minute) 28-30/04/2015
NM1 Woodley 28, 30 45 0, 0 NM2 Zulumovski Nth 33, 29 45 0, 0 NM3 Mahony 29, 29 NA NA NM4 Fisher-Webster 37, 35 45 0, 0 REF1 Duralie Road 49, 54 NA NA Additional Monitoring 30, 26 45 0, 0 Location Wards River NA = not applicable
Mine operating noise emissions were below the corresponding noise criteria at all attended noise measurements over all survey periods at all locations during the Day, Evening, Night 1 and Night 2 survey periods for the April 2015 surveys.
It is Vipac consultancy’ professional opinion ‘that the noise emissions produced by Duralie Coal Mine during the April 2015 DCM Environmental Quarterly Survey complied with the noise criteria for the relevant locations’.
The only exceedances recorded during the reporting period were recorded during the July 2014 monitoring and occurred under inversion conditions. To address any noise exceedences regardless of inversion presence DCM continue to implement the management measures described in the NMP Section 6. Additionally, DCM implement operational management measures in accordance with the real-time noise monitoring response protocol described in the NMP Section 7.3.5. Details of any RTN alarms recorded and the operational response implemented by DCPL are recorded in the RTN Response Register; further detail is provided in Section 3.13.4.
The 2010 EA provides predictions on mine contributed noise emissions for various operational years. Year 3 is the most applicable predictive year available. In terms of the four EPA licensed monitoring locations (“Woodley”, “Zulumovski”, “Mahony” and “Fisher-Webster”) predicted mine contributed noise emissions were consistent with measured values for all locations.
3.12.3 Rail Noise Monitoring
The NMP requires that rail noise monitoring is undertaken on a quarterly basis at existing Wards River and Craven locations. Rail noise monitoring is reported against rail noise criteria described in section 4 of the NMP and is undertaken for general information purposes only (i.e. they are not DCM compliance requirements).
Rail noise monitoring was conducted during the July 2014, October 2014, February 2015 and April 2015 Noise Surveys. Rail Noise Survey results are included in the Noise Survey reports which are available at the Duralie Coal website (www.duraliecoal.com.au).
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During the July 2014 and October 2014 surveys, noise emanating from the Duralie Shuttle was predicted to comply with the LAmax noise goal at residential receivers from monitoring conducted at the Wards River location with the exception of receivers 1 and 33. Receivers 1 and 33 are Duralie Coal owned properties and the noise goals are not applicable at these properties. All receivers complied with the LAeq 15-hour noise goal at the TM1 (Wards River) location.
Additionally, the noise emanating from the Duralie shuttle was predicted to comply with the LAeq 15-hour and LAmax noise goals at receivers 4, 5 and 8 based on the noise level monitored at TM2 (Craven) during the July 2014 and October 2014 surveys.
During the February 2015 survey an unattended noise logger was situated at three locations, TN1 (Craven), TN2-North (northern end of Wards River village), and TN2-South (southern end of Wards River village). Attended measurements were conducted at TN1 and TN2-North. No additional attended measurement was conducted at TN2-South due to a low number of train pass-bys during the period the survey was conducted.
The attended noise levels measured at TN1 and TN2-North were assessed against the LAmax and LAeq 15-hour noise goals. The noise emanating from the Duralie shuttle was predicted to comply with the LAmax noise goal at residential receivers from monitoring conducted at the TN1 Craven and TN2-North for the February 2015 noise compliance assessment.
During the April 2015 survey attended measurements and unattended noise logger surveys were conducted at all three locations, TN2-North, TN2-South and TN1.
The noise emanating from the Duralie shuttle complied with the LAmax noise goal at all the TN2-North (Wards River North), TN2-South (Wards River South) and TN1 (Craven) with the rail horn excluded from the measurement for this monitoring period. The train horn noise during the pass-by measurement at TN2-South was masked by road traffic noise during the survey. Regardless, the overall LAmax level recorded at TN2-South for the train pass-by complied with the noise goal of 85dB LAmax.
The noise level recorded at TN2-North failed to comply with the LAeq pass-by noise goal. The LAeq level of 66dB, which was representative of the train pass-by noise emission, with the rail horn excluded was raised 1dB above the noise goal of 65dB LAeq.
The noise levels recorded at the TN1 (Craven) and TN2-South (Wards River) monitoring locations complied with the LAeq pass-by for this quarter.
The noise emissions associated with the Duralie Shuttle pass-by were therefore deemed to comply with the noise goal set out in the DCM Noise Management Plan, at the TN1-Craven and TN2-South monitoring location but failed to comply with the noise goals at TN2-North (Wards River).
3.12.4 Real Time Noise Monitoring Results
A real-time noise monitoring response protocol is described in the NMP Section 7.3.5. Details of any RTN alarms recorded and the operational responses implemented by DCPL are recorded in the RTN Response Register. RTN Response Register details for the reporting period are provided below. In general the majority of alarms during the reporting period related to abnormal meteorological conditions, animal noise or traffic/train noise. Additionally, several of the alarms were received at times when no operations were occurring, i.e. Sunday nights. DCPL continue to implement the noise management measures described in the NMP.
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DCPL Real‐time Noise Monitoring Response Register
*Note: Commencement Date December 2013 Alarm Date/Time Review of Review of real‐time Identified source of noise emissions Management Measures Review of real‐time data to Meteorological Data audio to determine mine Taken determine whether the (Does the noise criteria contribution management strategy has apply) resulted in a discernible noise reduction. 3/12/2014 20:45 Thunder/lightning storm N/A Noise monitor Exceeded 42 dbl in N/A N/A prior to rain starting. heavy rain/lightning storm at 20.45 hrs. Only alarm for the night. 5/12/2014 23:00 Thunder storms and rain N/A Only explanation was the viscious N/A N/A thunder that was happening at that time. 6/12/2014 1:00 Thunder storms and rain N/A Thunder N/A N/A 7/12/2014 20:45 Thunder storms and rain N/A Thunder N/A N/A 9/12/2014 6:15 Yes N/A No operations at time of alarm. N/A N/A 2/05/2015 23:30 No, rain at the time N/A Investigation into alarm as there was rain at the time which should have excluded alarm. 19/05/2015 6:30 Yes N/A No operations at time of alarm. 21/05/2015 23:45 No, thunder and rain. N/A Thunder N/A N/A 31/05/2015 6:45 No, rain at the time N/A Rain at time of alarm. No operations N/A N/A at time of alarm. 1/06/2015 1:45 No, wind at the time of Dominant noise was N/A N/A alarm. wind interference. 15/06/2015 21:45 Yes Reviewed audio at 22:00. Interterence on audio. N/A N/A Dominant noise was interference and crackling on the audio, background insects and frogs. Mine noise not audible. 17/06/2015 5:45 Yes N/A No operations at time of alarm. N/A N/A 29/06/2015 6:45 Yes N/A No operations at time of alarm. N/A N/A
3.12.5 Mobile Plant Noise Assessments
The DCM fleet of mobile plant including haul trucks, excavators, dozers, graders and other items are annually assessed for sound power levels (SWL). Availability of mobile plant for noise testing is subject to production requirements and servicing/maintenance/breakdowns.
Noise assessments of mobile plant and equipment occurred in March 2015. Several mobile plant exceeded the specified A-weighted and linear target noise emission levels. Some points of consideration with regard to the results of the sound power survey are given below;
Dozers #21, #22, #237 and #252 failed to comply with the Linear (Z) static sound power levels. This would indicate that these units contain a large low frequency component noise from their engine operations. One of the Emeco dozers (#237) failed to comply with the dynamic A-weighted sound power levels and two of the Emeco dozers (#237 and #252) failed to comply with the dynamic linear sound power targets.
It was noted by Vipac Engineers on-site that the tracks were loose on several dozers particularly DZ #237 and DZ #252. Vipac understands that all Emeco dozers are undergoing a full refit and Vipac recommends that particular attention is paid to the correct tensioning of the dozers to minimise track slap, a noise source often audible at residential receivers during compliance surveys.
Pumps were measured in situ and several of the pumps had faults when operating. Reflection from nearby high-walls and other operating plant may have impacted upon the measurement.
Excavator #5028, Komatsu PC1600 failed to comply with the A Weighted Static operations by 1dB and Excavator #5029, Liebherr R9250, failed to comply with the Linear Static and Dynamic operations noise targets. All other excavators complied with the target. It was
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noted during surveying that the exhaust noise on the Liebherr excavators was one of the dominant noise sources on the vehicles.
Drill #215 was measured only at six points due to operational constraints of it operating near an open high wall. Drill #216 was not measured as it had sustained damage during operation and was undergoing maintenance at the time of the survey.
8 Haul trucks (#47, #48, #51, #54, #66-69) failed to comply with the Static A weighted sound power targets. Six of these excursions are 1dB excursions.
The results of the annual mobile plant noise assessment are utilised to provide feedback on the maintenance of the mobile plant fleet. Specifically resulting from the 2015 monitoring all Emeco dozers where inspected as part of the routine maintenance program focusing on track tensioning and the sound attenuation kits. During the reporting period the haul truck fleet were progressively undergoing major half-life servicing. Additionally, the results of the excavator monitoring continue to be used in the mine scheduling to position the quieter excavators in more exposed locations and the louder excavators in protected locations.
3.12.6 Complaints
Thirty-nine (39) noise related complaints were received during the reporting period (complaints include general mine noise and evaporative fan noise). A larger number of noise complaints occurred in this reporting period when compared with the previous period (26). A full detailed complaints list is provided in Appendix 6.
3.13 LANDSCAPING AND VISUAL SCREENENG
The overall visual impacts of the Duralie Mine are generally considered low. However, some local impacts will occur and undertakings such as the following have been, and will continue to be, adopted to lessen these impacts:
Minimising (where possible) disturbance to native vegetation, especially where such vegetation is providing visual screening; Retention specifically of ridge Open Forest and regrowth forest (where possible); Retention of all riparian vegetation along Mammy Johnsons River and those out of pit sections of Coal Shaft Creek; Ensuring out of pit emplacement design produces a landform which integrates with the adjoining natural landform; Painting of substantial fabricated infrastructure with a colour (“Rivergum”) that assists it to blend in with the adjoining landscape; Maintenance of infrastructure to retain the ability of such infrastructure to blend into the surrounding landscape over the life of the project; and Placement, configuration and direction of lighting to reduce offsite nuisance effects of stray light. Prioritising rehabilitation of exposed and outer batters of waste emplacements.
In accordance with project approval condition a visual screen has been constructed along a section of the Bucketts Way to the north-west of the mine in consultation with DP&E, RMS, Great Lakes Council and DCM CCC.
3.13.1 Complaints
No visual related complaints were received during the reporting period. The complaints list is included in Appendix 6.
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3.14 CULTURAL AND NATURAL HERITAGE CONSERVATION
Archaeological surveys conducted at the Duralie Mine site in the 1980’s and 1990’s did not identify any Aboriginal sites or items with the exception of one site. A tree, to be subsequently referred to as the “honey tree” was the subject of a site inspection involving various parties including representatives of NPWS in November 1998. The consensus at the time of inspection was that the “honey tree”, an old ironbark, had had timber pieces inserted into the trunk in a spiral pattern to allow someone to scale the tree and access the crown – possibly to collect honey. It was not clear whether such timber insertion would have been performed by an Aboriginal person or early European settler. The “honey tree” was subsequently listed on the NPWS Aboriginal Heritage Information Management System (AHIMS) database.
The Duralie Extension Project Environmental Assessment identified 9 sites of Aboriginal heritage significance (DM2, DM3, DM4, DM5, DM6, DM9, DM10, DM11 and the “Honey Tree”) on the Mining Lease. These sites have been protected by way of signpost and fencing where required. In addition, 4 sites (DM1, DM7, DM8 and Mammy Johnson’s Grave) were identified outside of the Mining Lease. These 9 sites are tabulated below:
The Duralie Mine has a Heritage Management Plan (HMP) (Duralie Coal 2015b) that was revised and approved in June 2015. The purpose of the HMP is to address the requirements of Project Approval condition 46, (DoPi 2011).
In accordance with the HMP topsoil disturbance during earthworks, construction and operation of the mine has been monitored utilising officers of the Karuah Local Aboriginal Land Council (KLALC). During the reporting period minimal topsoil disturbance was undertaken and KLALC officers did not report any Aboriginal artefacts.
In accordance with the HMP, monitoring of the Aboriginal heritage sites at the Duralie mine was conducted each quarter during 2014/15.
Table 23: Aboriginal Heritage Sites within EA Study Area
Site Code Site Type Status (refer EA documentation) DM2 Isolated Artefact Salvaged DM3 Scarred Tree Existing DM4 Scarred Tree Existing DM5 Scarred Tree Salvaged DM6 Isolated Artefact Existing DM9 Open Artefact Scatter Existing DM10 Scarred Tree Existing DM11 Isolated Artefact Removed 38-1-0033 Scarred Tree – Honey Tree Existing
In terms on non-indigenous heritage, during 2003/2004 and 2008/2009 former mine workings from mining activities conducted during the 1930’s were uncovered. Items considered to have historical significance such as a steam boiler, timber pit props, rail and broken pieces of coal skip wheels were provided to the Stroud Historical Society.
Additionally, a building inspection of the European heritage site, Weismantels Inn is conducted every two years and was last undertaken in July 2015. The recommendations from this building inspection have been completed and will be included in next years report. An ongoing maintenance program is undertaken for Weismantels Inn including any recommendations from the routine building inspections. Additionally the standard requirements of the residential tenancy agreement apply to Weismantels Inn.
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3.15 SPONTANEOUS COMBUSTION INCIDENCE
There were isolated instances of spontaneous combustion during the reporting period. These occurred near exposed sections of the Clareval coal seam in Block 6 and were managed in accordance with the Spontaneous Combustion Standard Operating Procedure. Management generally involves reducing the interaction with water and oxygen by profiling and capping and reducing the time coal faces are exposed prior to mining. Isolated occurrences of self-heating within the exposed faces of the waste dump have been observed during the reporting period.
3.16 AGRICULTURAL REPORT
3.16.1 Cropping
Information on past cropping is contained in previous AR reports. All cropping has occurred within northern/Type III irrigation areas. As a consequence of the northerly advance of the Weismantel Pit there are currently no available areas suitable for cropping. No further cropping trials are proposed for the remaining life of the Duralie project.
3.16.2 Grazing
During the reporting period there were on average approximately 35 head of cattle grazing within the mining lease area on either a lease or agistment basis involving two (2) separate lessees or agisters. Installation and maintenance of fencing was undertaken during the reporting period to allow access for cattle grazing on areas within the Mining Lease which had become isolated. Additionally, cattle were grazed on other mine owned lands surrounding the mining lease.
4 COMMUNITY RELATIONS
4.1 COMMUNITY CONSULTATIVE COMMITTEE
The Community Consultative Committee (CCC) for the Duralie Coal Mine is currently comprised of:
An independent Chairperson; Five (5) local community representatives; Two (2) local government representatives (Great Lakes Council); and Three (3) DCM representatives.
The CCC was formed in accordance with Schedule 5, Condition 5 of the Project Approval for the Duralie Extension Project. The Committee operates in such a manner as to generally satisfy the Guidelines for Establishing and Operating Community Consultative Committees for Mining Projects (Department of Planning, 2007) as well as satisfy the Director-General of the Department of Planning & Environment.
Items raised and/or discussed during the four (4) CCC meeting held during the reporting period include but are not limited to:
Karuah River Catchment Management Plan Biodiversity offset area Bushfire management Noise, including evaporative sprays Blasting Community complaints Environmental monitoring Air quality Giant Barred Frog monitoring
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Irrigation including evaporative spray operation Community and council contributions
The CCC meeting agendas, presentations and minutes are available on the Duralie Coal website (www.duraliecoal.com.au).
4.2 ENVIRONMENTAL COMPLAINTS
Complaints (by category) received by Duralie Coal Pty Ltd (Duralie Coal) over the last 6 reporting years are as follows:
09/10 10/11 11/12 12/13 13/14 14/15 Noise 22 22 28 25 26 39 Blasting 11 11 16 1 12 13 Air Quality 3 5 0 4 4 1 $ Water 0 2 1 0 0 0 Lighting 0 1 0 1 0 0 Visual 0 0 0 1 1 0 Train 0 1 0 0 0 3 Notification 2 1 0 0 0 0 Other 0 0 0 0 1 0 Total* (by Category) 36 43 43 46 42 56
* Note that a single complaint may involve multiple categories.
Comments
The total number of complaints received during the reporting period was 56 with the total number of complainants being 12. Noise complaints constituted the most populous category of complaints received (39), with blasting the second most populous (13). Total number of complaints received by category during 2014/2015 for noise, blasting and train noise was higher than the previous year and lower than the previous year for air quality. Duralie Coal’s Environment Protection Licence (EPL) 11701 applies to the area over which the NSW Department of Trade & Investment, Regional Infrastructure and Services (DTIRIS) Mining Leases 1427 and 1646 are issued. A requirement of the EPL is to record pollution complaints regarding complaints stemming from operations within the nominated Lease areas. Complaints relating to coal trains despite operating off the mining lease are included in the total complaints as they relate to the project. A complaints listing is provided in Appendix 6 and includes details on DCPL’s responses to complaints. A summary of complaints by category is provided in the relevant sections of the report.
4.3 LIAISON AND COMPLAINT RESOLUTION
Liaison with the local community is channelled through the Community Consultative Committee (CCC). A new committee was formed following approval of Duralie Extension Project in November 2010, with four meetings (August 2014, November 2014, February 2015 and May 2015) held during the reporting period. DCPL operates a system to receive, handle, respond to and record complaints relating to operation of the Duralie Coal Mine via a dedicated 24 hour hotline (1300 658 239). The number is advertised within
Annual Review June 2015 Duralie Coal Pty Ltd Page 49 the Sensis White Pages Directory (Newcastle), a local telephone directory (Pink Pages) and in the local newspapers (Gloucester Advocate and Dungog Chronicle) on a six monthly basis.
Designated Duralie staff, when notified of a complaint, determine an appropriate response on the basis of the nature of the complaint during business hours. This may involve a site visit/inspection, liaison with personnel on site by telephone or other appropriate action. After business hours, all complaints and operations are reviewed as soon as practicable by the open cut examiner.
All complaints received and responses taken in relation to each complaint are recorded in a Complaints Register which is tabled at each Community Consultative Committee meeting for the period covered since the last Committee meeting and is included in Appendix 6 for the reporting year.
4.4 EMPLOYMENT STATUS AND DEMOGRAPHY
As at 30 June 2015, the employment status at the mine site was as follows:
DURALIE FULL-TIME FTE Contractors 151 Duralie Coal Handling Plant Employees 5 Mining 2 Environment & Community 1 Shared Services 7 Total 166
In addition to direct permanent employment at the mine, on the basis of a conservative employment multiplier of one mine site job generating one job within the general community, up to 166 (full time equivalent) jobs are expected to have been provided in supporting services. On the basis of a review of employees’ living location, 60% of mine employees resided within the greater local area (defined as being bounded by Stroud, Gloucester and Dungog).
4.5 EMPLOYEE ENVIRONMENTAL AWARENESS TRAINING
Contractors and new employees working at site are provided with information on environmental issues as part of induction training which is updated periodically. This includes elements such as the reporting obligations of personnel and the management of environmental incidents such as oil or fuel spills. Other training is scheduled and circulated periodically.
5 REHABILITATION
The primary objectives of the rehabilitation programme are:
Production of a landform which is stable and consistent with the local surrounding landscape; Minimisation of erosion; Re-instatement of pre-mining land capability for the final land uses of grazing, woodland habitat and/or other appropriate land use; Tree and shrub establishment, mounding or bunding to provide visual amenity and to re- establish flora and fauna corridors and habitats; and To minimise the amount of disturbed land awaiting rehabilitation.
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5.1 BUILDINGS
No buildings were constructed, demolished or renovated during the reporting period.
5.2 REHABILITATION OF DISTURBED LAND
Rehabilitation of disturbed areas is undertaken concurrent with ongoing mining operations. Duralie Coal manages its rehabilitation activities in accordance with good land management practice and regulatory requirements. Rehabilitation of land is undertaken in accordance with the Duralie Coal Mine Rehabilitation Management Plan (RMP) (Duralie Coal, 2013d) and the Duralie Coal Mine Mining Operations Plan (MOP) (DCPL, 2015). The MOP was revised following approval of the Duralie Modification 2 in December 2014 and subsequently approved by DRE in March 2015.
Disturbances associated with the construction of the mine infrastructure (e.g. rail siding and access road batters, office areas) have been rehabilitated using a variety of techniques including reshaping, topsoil placement, seeding/fertilising and hydro mulching.
Rehabilitation of the out of pit overburden dump involves the contouring of the outer dump faces to an overall slope of 1 in 4 followed by drainage works (ie contour drains with grade 1% flattening to 0.6%or benches to slow the velocity of runoff downslope). A small proportion of the out of pit dump lies on a natural ground profile which falls away from the mining excavation. In order to limit the potential for infiltrating rain to accumulate salts and thence to charge a local waterway, a nominal 0.6m compacted clay layer was placed beneath the topsoil covering.
The overburden dump is rehabilitated in progressive increments to the final landform so that contaminated water catchment areas are minimised.
Topsoil is removed from ahead of the advancing pit or overburden dump. All suitable and accessible topsoil material is removed. The topsoil is pushed into piles by dozers and loaded into trucks by excavator. The topsoil is either immediately respread onto re-contoured areas or is stockpiled for later re-use. Topsoil, previously stripped from the site, is respread to a nominal thickness of 100mm and revegetated. Direct placement of freshly stripped topsoil on areas under rehabilitation is undertaken wherever possible.
In accordance with the Section 5.4.4 of the RMP, to minimise degradation of topsoil quality during stockpiling the following measures are in place: stockpiling time is minimised whenever possible; topsoil stockpiles do not exceed 3m in height (average 1.5m) and stockpiles are reshaped, seeded with pasture grasses and fertilised to maintain biological activity. These measures help prevent erosion, soil loss and limit dust generation.
Following drainage works and topsoil placement, site preparation involves chisel ploughing on level ground or ripping (300-400mm) on slopes as required.
Areas to be rehabilitated will comprise a combination of treed and pastured areas. Trees are planted to achieve maximum aesthetic and screening effects as well as providing windbreaks, woodlots, stock shelter and habitat enhancement. As per Table 4 in the RMP, local endemic native species (particularly trees identified in the EIS) will be used wherever possible based on trialling of various species in the initial rehabilitation areas. Pasture seed utilised will consist of a mix based on previous sowings, seasonal availability and external advice.
In terms of the site’s topsoil balance, it is anticipated that sufficient topsoil resources will be available to complete rehabilitation. This expectation is based on topsoil to date being stripped to at least 100mm, deeper topsoil profiles lying in the Coal Shaft Creek area and a final void ultimately being produced. At the end of the reporting period an estimated 210,000 cubic metres of topsoil was held in various stockpiles. This would provide for rehabilitation of 210 hectares to the nominal topsoil depth of 100mm. The current area disturbed by operations is 228 hectares, therefore sufficient topsoil resources are available to complete rehabilitation of the operation taking in to account the final voids will not require topsoil.
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Topsoil stripping has now been completed up to the northern extent of the Clareval pit and up to Strip 15 in the Weismantel pit. Topsoil stripping is still to be undertaken in Strip 16 and 17 of the Weismantel pit.
Rehabilitation at June 2015 has been completed in the following areas:
General areas including shoulders of the site access road, clean water diversion drains (i.e. MWD, AD1, AD2, Eastern Drain and Clareval Drain), rail siding embankments, dam embankments and the Coal Shaft Creek diversion; Temporary topsoil stockpiles; Majority of the southern waste emplacement with the exception of a small section on the western side; Eastern batter running parallel to the tombstone ridgeline incorporating the noise bund; and Two plug areas on the western side of the Clareval pit.
Rehabilitation completed during the reporting period included bulk shaping of approximately 12ha above the RL69 stockpile and on the northern side of the powerline corridor. Full rehabilitation of these areas is expected to be completed in Spring 2015.
The Duralie Coal Mine Mining Operations Rehabilitation progress is generally in accordance with the planned activities described in DCM Mining Operations Plan (MOP 2015) approved in March 2015 (i.e. Plan 3A – Mining and Rehabilitation - 2015). The revised MOP makes provision for 103 hectares of rehabilitated area by Year 1 of operations (end 2015).
A summary of rehabilitation activities is provided in Table 25. A revised MOP was submitted and approved during the reporting period and the areas in Table 25 reflect the updated MOP. The change to the infrastructure area is a result of the revised MOP and not actual works undertaken. Proposed disturbance and rehabilitation areas have been revised in the updated MOP.
Annual Review June 2015 Duralie Coal Pty Ltd Page 52
Table 25: Rehabilitation Summary
Cumulative Area Affected (hectares) To date Last report Next Report (estimated) A: MINE LEASE AREA A1 Mine Lease(s) Area 942.8 B: DISTURBED AREAS B1 Infrastructure area (other disturbed areas to be 47 25 47 rehabilitated at closure including facilities, roads) B2: Active Mining Area 69 115 69 (excluding items B3 – B5 below) B3 Waste emplacements, (active/unshaped/in or out-of- 124 87 124 pit) B4 Tailings emplacements, (active/unshaped/uncapped) 0 0 0 B5 Shaped waste emplacement 12 2 0 (awaits final vegetation) ALL DISTURBED AREAS 252 229 240 C REHABILITATION PROGRESS C1 Total Rehabilitated area 85 85 98 (except for maintenance) D: REHABILITATION ON SLOPES D1 10 to 18 degrees 69 69 80 D2 Greater than 18 degrees 0 0 0 E: SURFACE OF REHABILITATED LAND E1 Pasture and grasses 8.5 8.5 8.5 E2 Native forest/ecosystems 76.5 76.5 89.5 E3 Plantations and crops 0 0 0 E4 Other (include non-vegetative outcomes) 0 0 0
Maintenance activities on rehabilitated land were also undertaken during the reporting period. These included re-topsoiling of a 2 hectare area with poor establishment on the southern side of the powerline corridor. This will be followed by liming and seeding. A section of drain under the powerlines was stabilised with additional rock protection. Repair works were undertaken on diversion drains following heavy rain in April 2015- A summary of maintenance activities, during the reporting period and those planned for the following reporting period, are outlined in Table 26 below.
Annual Review June 2015 Duralie Coal Pty Ltd Page 53
Table 26: Summary of Maintenance Activities during the Reporting Period
Nature Of Treatment Area Treated (ha) Comment/Control Strategies/Treatment Details Report Next Report Period Period Additional erosion control 1 0 Additional rock protection and drain repairs works (drains,re-contouring, rock protection) Re-covering (further topsoil, 2 0 Re-topsoiling on areas of poor establishment. subsoil sealing etc.) Soil treatment (fertiliser, lime, 2 0 Liming on areas of poor establishment. gypsum etc.) Treatment/management 0 0 (grazing, cropping, slashing etc.) Re-seeding/replanting 2 0 Re-seeding on areas of poor establishment. (species density, season etc.) Adversely affected by 0 0 weeds (type and treatment) Feral animal control 0 0 (additional fencing, trapping, baiting etc.)
5.3 OTHER INFRASTRUCTURE
No other infrastructure rehabilitation was conducted during the reporting period.
5.4 REHABILITATION TRIALS AND RESEARCH
Rehabilitation trials are currently being implemented in the biodiversity offset area in accordance with the Biodiversity Management Plan. Refer to Section 3.10 of this report and the Duralie Coal Mine Annual Biodiversity Report (DCPL, 2015) for a summary of works undertaken during the reporting period.
5.5 FURTHER DEVELOPMENT OF THE FINAL REHABILITATION PLAN
5.5.1 Final Void Treatment
Under the Project Approval, at the cessation of mining, the northern extents of the currently approved DEP include final voids in the Clareval pit and Weismantel pit.
A final void water balance was undertaken for the DEP EA. Further details associated with the final void will be addressed as part of detailed mine closure planning.
Annual Review June 2015 Duralie Coal Pty Ltd Page 54
5.6 REHABILITATION MONITORING
In accordance with the Duralie Coal Mine Rehabilitation Management Plan (Duralie Coal, 2013d) monitoring of rehabilitation areas at the Duralie mine site, using Landscape Function Analysis (LFA) was conducted during December 2014. A copy of the full report is available from the Duralie Coal Environmental Department. A summary of the findings follows;
Overall, key indices of landscape function have improved in all Duralie rehabilitation areas between 2013 and 2014 surveys. It was identified that some have approached, met or exceeded benchmark offset values. These are positive findings and suggest soil surface attributes in the rehabilitation areas are likely to be in line with restoration goals at this point in time. Surveys also revealed that ground and woody strata vegetation have established successfully and consistently across the rehabilitation areas as indicated by stem density and trends towards singular perennial patch patterns (which have been described as appropriate and indicative for higher rainfall locations). These findings suggest that germination and establishment from rehabilitation seed mixes have been consistent across sites and years. While these results are encouraging, surveys do also point to a lack of compositional complexity in the ground and woody layers. This is likely to result from the use of seed mixtures that contained relatively low numbers of native species (i.e. 3 Eucalypt and 3 Acacia species) in all rehabilitation areas up to 2011. This low current diversity does not preclude the possibility that native species will emerge from the soil seed bank contained in the capping topsoil. It should also be noted that Yancoal has increased native species diversity in seed mixtures for the 2012 rehabilitation area.
The broad goal of mine rehabilitation is to progress remediated sites towards ones which have stable landscape features and which support self-sustaining ecosystems. For Duralie, at this point landscape features are in line with benchmark values, while ecosystem sustainability is balanced between encouraging levels of plant cover and stem densities, but a lack of compositional diversity.
LFA indices across four rehabilitation age classes and reference values obtained from the Yancoal offset area are shown in Table 24.
Table 24: Summary of Landscape Function Indices
Stability Infiltration Nutrient Cycling Rehabilitation Age Class 2013 2014 2013 2014 2013 2014 Offset remnant (Wooded) 71.7 73.2 46.4 53.5 40.6 47.1 Revegetation 2008 70.6 74.4 34.4 45.3 33.1 43.5 Revegetation 2010 64.6 75.7 29.6 37.3 27.0 33.2 Revegetation 2011 60.1 60.6 23.8 29.5 16.5 24.9 Revegetation 2012 46.2 58.5 23.1 29.5 13.0 22.8
The recommendations from the annual LFA monitoring have been used to guide rehabilitation maintenance and future rehabilitation activities.
Annual Review June 2015 Duralie Coal Pty Ltd Page 55
6 ACTIVITIES PROPOSED IN THE NEXT AR PERIOD
6.1 ENVIRONMENTAL MANAGEMENT
The following environmental targets have been set for the next 12 months:
Progress rehabilitation works to satisfy DEP EA and MOP nominated targets;
Progress biodiversity offset works in accordance with the BMP including trial revegetation works.
Minimise noise related complaints reported to the mine including complaints relating to shuttle train noise and evaporative sprays;
Review water balance and site water management system opportunities for improvement.
6.2 REHABILITATION
The DCM MOP (Plan 3A – Mining and Rehabilitation - 2015) rehabilitation target for end of 2015 calendar year is a cumulative total of 103 hectares of rehabilitation.
DCPL propose to undertake 12 hectares of progressive rehabilitation in Spring 2015. Rehabilitation activities in the next 12 months will focus on completing the 12 hectares stated above. Following this the waste emplacements will continue to increase to their final height and minimal rehabilitation is proposed for 2016 in line with the approved MOP.
Review of seed species used in rehabilitation selection will also occur during the next reporting period in line with recommendations from LFA monitoring and independent advice.
Annual Review June 2015 Duralie Coal Pty Ltd Page 56
7 REFERENCES
Biosphere Environmental Consultants (2015). Duralie Coal Mine Giant Barred Frog (Mixophyes iterates) Monitoring Results October 2014 to February 2015
Brown, Trevor and Associates (2015). Independent Environmental Audit Duralie Coal Mine for Duralie Coal Mine.
Centre for Mined Land Rehabilitation (CMLR) (2014). Review and Interpretation of Duralie Coal Mine’s Ecotoxicity Testing Program Report, 30 May 2014.
Department of Planning and Infrastructure (DoPI) (2011). Land and Environment Court of NSW Order for Duralie Extension Project Approval, Duralie Coal Pty Ltd 10 November 2011.
Department of Planning and Infrastructure (DoPI) (2007). Guidelines for Establishing and Operating Community Consultative Committees for Mining Projects, page 2.
DCPL (2015a). Duralie Coal Mine Air Quality and Greenhouse Gas Management Plan
DCPL (2015b). Duralie Coal Mine Heritage Management Plan
DCPL (2013c). Duralie Coal Mine Noise Management Plan
DCPL (2013d). Duralie Coal Mine Rehabilitation Management Plan
DCPL (2013e). Duralie Coal Mine Water Management Plan
DCPL (2015f). Duralie Coal Mine Surface Water Management Plan
DCPL (2015g). Duralie Coal Mine Irrigation Management Plan
DCPL (2012h). Duralie Coal Mine Giant Barred Frog Management Plan
DCPL (2013i). Duralie Coal Mine Blast Management Plan
DCPL (2015). Duralie Coal Mine Annual Biodiversity Report 2015
Freudenberger (2013). Baseline Monitoring of Landscape Function and Vegetation Structure for the Duralie Biodiversity Offset.
Gilbert and Associates Pty Ltd (2010). Duralie Extension Project, Surface Water Assessment
Greening Australia (2013). Duralie Coal Mine Biodiversity Management Plan
Horizon Environmental Soil Survey and Evaluation (2015). Duralie Coal Mine - Irrigation Area Monitoring 2015
Invertebrate Identification Australasia (2014). September 2014 Survey. Biological Monitoring of the Streams Adjacent to the Duralie Coal Mine for Duralie Coal Pty Ltd.
Invertebrate Identification Australasia (2015). February 2015 Survey. Biological Monitoring of the Streams Adjacent to the Duralie Coal Mine for Duralie Coal Pty Ltd.
Annual Review June 2015
Appendix 1:
Monitoring Locations Monitoring Plan Site Locality Land Plan. and Rehabilitated Disturbed
400 000 E
450 000 E
TAREE
GLOUCESTER
Krambach 6 450 000 N
Stratford Nablac
Craven Tuncurry Forster
Wards River
DURALIE COAL MINE
Stroud Road See Figure 2
Dungog Stroud
Treachery Head Booral
THE 6 400 000 N BROADWATER
Limeburners Creek
PORT STEPHENS
MAITLAND
Darwin Hexham LEGEND
NORTHERN TERRITORY Authorisations and EL A U S T R A L I A WESTERN QUEENSLAND AUSTRALIA NEWCASTLE SOUTH Brisbane AUSTRALIA 6 350 000 N ML’s NEW SOUTH Perth WALES GLOUCESTER BASIN Roads Sydney Adelaide Railways VICTORIA Populated Areas Melbourne 0 2000 Reserves TAS. Hobart Kilometres
DURALIECOAL DURALIE OPERATION
ANNUAL REVIEW
0 25
Kilometres SITE LOCATION PLAN
To Sydney July 2015 Doc. No: DC-0007-001-2015-01 Figure 1 D7
396 000 E 398 000 E 400 000 E 402 000 E
Site 15
2 Km. to D7
NM4 Site 12 Fisher-Webster (AAAB3) M1
D10 RTNM1 RTDM1 NM2 DB11W SW9 6 430 000 N M8 D9 D12 NM3
Weismantel (FW1) ML 1646
Moylan (AAAB4) D8 Clareval DB10W DB9W Hattam SW10 DB8W
6 428 000 N SW4 TLR2 DB7W
Twin Houses D5 Edwards TLR1 D13 CSC Dam 3 DB1W ML 1427 Weather Station CSC Dam 1 DB3W WR2 AD2 Eastern Sediment Dam DB6W DB2W North Drain BH4BW SI2W SI1W SW3 6 426 000 N M2 MWD WR1 GB1 DDD2 SI3W South Drain VC1 SW2 Rail Culvert DDD3 RS6 DB4W D4 AD1 M6 SD 5 SW2 Irrigation SW6 M3 Weather DB5W Station RS1 D3
Schultz (AB1) Highnoon 6 424 000 N Highnoon
M4 LEGEND Mining Lease Boundary Site 11 Monitoring Sites Surface Water 6 422 000 N Ground Water NM1 Macroinvertebrate Sampling Blast EC DURALIECOAL DURALIE OPERATION Dust Deposition TEOM ANNUAL REVIEW High Volume Sampler Stroud Road Meteorological M5 MONITORING SITES Dam Site 9 Noise Aerial Photography June 2015 July 2015 Doc. No: DC-0007-001-2015-02 Figure 2
1 Km. to Site 19 400 000 E
401 000 E
399 000 E Legend Area 1 Demountables Strips 16 Workshops & 17
Area 2 - Conveyors ML 1646
Area 3 - ROM Stockpile
North North
Mammy Area 4 - Total CHPP Mammy
Area 5 - Rail Siding
Area 6 - Workshop Apron Johnson
Area 7 - Haul and Access Roads Active Area 8 - Concrete Pads Mining
VoidVoid Coast Area 9 - Car Park Creek
Area 10 - Shaped Rehab. Road Area 11 - Unshaped Rehab.
J
Area 12 - Active Mine Voids o
h
n s Area 13 - Mine Water o n s 6 428 000 N Area 14 - Clean Water Area 15 Coal Shaft Creek Diversion River
Main Dam Diversion Railway Auxiliary Dam 2 Diversion Channel Auxiliary Dam 1 Diversion Channel Eastern Diversion Channel
Area 16 - Successful Rehabilitation
Area 17 - Prill Storage
Area 18 - Emulsion Storage Eastern Area 19 - Explosives Magazine Diversion 6 427 000 N Channel Proposed Area of Disturbance - June 2016 Main Creek ML 1427 Diversion Proposed Area of Rehabilitation - June 2016
Auxiliary Dam 2
6 426 000 N Main Dam
Explosives Magazine
Plant and Infrastructure Auxiliary Area Dam 1
Road Auxiliary Dam 1 Diversion Channel 6 425 000 N
Access 0 500 DURALIECOAL DURALIE OPERATION
Metres ANNUAL REVIEW
Mine CATEGORISED AREAS DISTURBED AND REHABILITATED ()From Ortho Imagery - June 2015
Aerial Photography June 2015 July 2015 Doc. No: DC-0007-001-2015-03 Figure 3
Appendix 2: Monitoring Meteorological
Duralie Mine Site - Monthly Rainfall
200
150
100
50
0 Rainfall Rainfall (mm) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
2015 2014 AVERAGEA (2002-2015) HISTORICAL AVERAGE *
Figure 2-1: Monthly Rainfall for 2014 to 2015 and Historical Averages
Duralie Mine Site Minimum, Average and Maximum Evaporation Rates July 2014 to June 2015 8.0
7.0
6.0 Min 5.0 Max 4.0 Ave
3.0 Evaporation (mm) Evaporation
2.0
1.0
0.0
Sep-14 Nov-14 Jul-14 Aug-14 Oct-14 Dec-14 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15
Figure 2-2: Minimum, Maximum and Average Evaporation Rates During the Reporting Period
Duralie Mine Site Average and Maximun Wind Speeds July 2014 - June 2015
70.0
60.0
50.0 Max WS 40.0 Ave WS
30.0 WindSpeed (km/h) 20.0
10.0
0.0
Figure 2-3: Maximum and Average Wind Speeds During the Reporting Period
Duralie Mine Site Minimum, Maximum and Average Temperatures July 2014 - June 2015
45.0 40.0
35.0 Max C) ° 30.0 Ave 25.0 20.0 Min
15.0 Temperature( 10.0 5.0 0.0 -5.0
Figure 2-4: Minimum, Maximum and Average Temperatures During the Reporting Period
July 2014 August 2014
September 2014 October 2014
November 2014 December 2014
Figure 2-5: Monthly Windroses showing wind direction, speed and frequencies January 2015 February 2015
March 2015 April 2015
May 2015 June 2015
Figure 2-5 (continued): Monthly Windroses showing wind direction, speed and frequencies
Appendix 3: Results Air Quality Monitoring
Duralie Dust Gauge Monitoring
4.0 July 2014 to June 2015
3.5
3.0
2.5
2.0
/month) 2 1.5
1.0
Dust (g/m Dust 0.5
0.0 Jul-14 Aug-14 Sep-14 Oct-14 Nov-14 Dec-14 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15
D3 D4 D5 D7 D8 D9 D10 D12 D13
Figure 3-1: Monthly Depositional Dust Monitoring Results (minus contaminated results) during the Reporting Period
Duralie Dust Gauge Monitoring - Annual Rolling Average July 2014 to June 2015 4.5 4.0 3.5 3.0
/month) 2.5 2 2.0 1.5
1.0 Dust (g/m Dust 0.5 0.0 Jul-14 Aug-14 Sep-14 Oct-14 Nov-14 Dec-14 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15
D3 D4 D5 D7 D8 D9 D10 D12 D13 DP&E limit
Figure 3-2: Rolling Annual Average Depositional Dust Monitoring Results (minus contaminated results) during the Reporting Period
Duralie HVAS Monitoring (PM10) July 2014 to June 2015 60 50 40 30 20
PM10 (µg/m3) PM10 10 0
High Noon Twin Houses Hattam Edwards DP&E Limit
Figure 3-3: High Volume Air Sampling (PM10) Results during the Reporting Period
Duralie HVAS Monitoring (PM10) Annual Rolling Average - July 2014 to June 2015 35.0
) 30.0 3 25.0 20.0
(ug/m 15.0 10 10.0
PM 5.0 0.0
High Noon Twin Houses Hattam Edwards DP&E Limit
Figure 3-4: Rolling Annual Average HVAS Results during the Reporting Period
Duralie TEOM PM10 24 Hour Averages July 2014 to June 2015 50 45 40 35 30 ug/m3 25 20 15 10 5
0
01-Jul-2014 15-Jul-2014 29-Jul-2014
13-Jan-2015 27-Jan-2015
16-Jun-2015 02-Jun-2015 30-Jun-2015
07-Oct-2014 21-Oct-2014
07-Apr-2015 21-Apr-2015
09-Sep-2014 23-Sep-2014 10-Feb-2015 24-Feb-2015
02-Dec-2014 16-Dec-2014 30-Dec-2014
12-Aug-2014 26-Aug-2014
04-Nov-2014 18-Nov-2014
10-Mar-2015 24-Mar-2015
05-May-2015 19-May-2015
PM10 24hr
Figure 3-5: Real Time Dust Monitoring (PM10) Results during the Reporting Period
Duralie TEOM PM10 Annual Averages July 2014 to June 2015 16.0 14.0 12.0 10.0 ug/m3 8.0 6.0 4.0 2.0
0.0
01-Jul-2014 15-Jul-2014 29-Jul-2014
13-Jan-2015 27-Jan-2015
02-Jun-2015 16-Jun-2015 30-Jun-2015
07-Oct-2014 21-Oct-2014
07-Apr-2015 21-Apr-2015
23-Sep-2014 09-Sep-2014 10-Feb-2015 24-Feb-2015
16-Dec-2014 02-Dec-2014 30-Dec-2014
12-Aug-2014 26-Aug-2014
04-Nov-2014 18-Nov-2014
10-Mar-2015 24-Mar-2015
05-May-2015 19-May-2015
PM10 Annual Average
Figure 3-6: : Rolling Annual Average TEOM (PM10) Results during the Reporting Period
Real Time Dust Monitoring (PM10) Results during the Reporting Period
PM10 PM10 PM10 PM10 PM10 PM10 PM10 PM10 PM10 PM10 PM10 PM10 24hr 24hr Annual 24hr Annual 24hr Annual Annual 24hr Annual 24hr Annual Average Average Average Average Average Average 1/07/2014 4.0 4.0 1/09/2014 6.7 8.5 1/11/2014 28.1 11.6 1/01/2015 16.6 13.6 1/03/2015 10.9 12.7 1/05/2015 4.8 12.5 2/07/2014 7.7 5.9 2/09/2014 9.0 8.5 2/11/2014 14.1 11.7 2/01/2015 12.9 13.6 2/03/2015 14.3 12.7 2/05/2015 6.1 12.5 3/07/2014 9.0 6.9 3/09/2014 4.9 8.4 3/11/2014 15.3 11.7 3/01/2015 14.4 13.6 3/03/2015 10.1 12.7 3/05/2015 5.6 12.4 4/07/2014 9.0 7.4 4/09/2014 7.6 8.4 4/11/2014 15.4 11.7 4/01/2015 14.6 13.6 4/03/2015 15.8 12.7 4/05/2015 10.9 12.4 5/07/2014 11.4 8.2 5/09/2014 5.9 8.4 5/11/2014 22.2 11.8 5/01/2015 12.6 13.6 5/03/2015 23.8 12.8 5/05/2015 5.6 12.4 6/07/2014 5.6 7.8 6/09/2014 9.6 8.4 6/11/2014 19.1 11.8 6/01/2015 10.5 13.6 6/03/2015 19.3 12.8 6/05/2015 35.2 12.5 7/07/2014 5.3 7.4 7/09/2014 5.7 8.4 7/11/2014 19.1 11.9 7/01/2015 9.3 13.5 7/03/2015 15.3 12.8 7/05/2015 13.1 12.5 8/07/2014 9.5 7.7 8/09/2014 4.2 8.3 8/11/2014 12.2 11.9 8/01/2015 11.7 13.5 8/03/2015 15.9 12.8 8/05/2015 10.8 12.5 9/07/2014 12.9 8.3 9/09/2014 4.8 8.3 9/11/2014 32.5 12.1 9/01/2015 15.2 13.5 9/03/2015 22.2 12.8 9/05/2015 9.5 12.5 10/07/2014 10.7 8.5 10/09/2014 7.6 8.3 10/11/2014 35.1 12.2 10/01/2015 13.2 13.5 10/03/2015 30.3 12.9 10/05/2015 9.1 12.4 11/07/2014 7.8 8.4 11/09/2014 9.7 8.3 11/11/2014 21.0 12.3 11/01/2015 10.0 13.5 11/03/2015 16.6 12.9 11/05/2015 12.4 12/07/2014 5.4 8.2 12/09/2014 11.5 8.3 12/11/2014 16.5 12.3 12/01/2015 10.5 13.5 12/03/2015 15.8 12.9 12/05/2015 5.9 12.4 13/07/2014 6.5 8.1 13/09/2014 8.9 8.3 13/11/2014 13.8 12.3 13/01/2015 11.6 13.5 13/03/2015 14.2 12.9 13/05/2015 6.8 12.4 14/07/2014 8.6 8.1 14/09/2014 11.9 8.4 14/11/2014 18.3 12.4 14/01/2015 6.3 13.4 14/03/2015 13.7 12.9 14/05/2015 6.9 12.4 15/07/2014 9.1 8.2 15/09/2014 16.5 8.5 15/11/2014 33.7 12.5 15/01/2015 9.2 13.4 15/03/2015 12.3 12.9 15/05/2015 11.3 12.4 16/07/2014 6.4 8.0 16/09/2014 15.9 8.6 16/11/2014 18.4 12.6 16/01/2015 14.3 13.4 16/03/2015 13.6 12.9 16/05/2015 5.0 12.3 17/07/2014 3.7 7.8 17/09/2014 9.4 8.6 17/11/2014 14.1 12.6 17/01/2015 9.3 13.4 17/03/2015 10.3 12.9 17/05/2015 3.9 12.3 18/07/2014 5.1 7.6 18/09/2014 9.2 8.6 18/11/2014 23.3 12.7 18/01/2015 14.0 13.4 18/03/2015 11.7 12.9 18/05/2015 4.1 12.3 19/07/2014 7.2 7.6 19/09/2014 20.0 8.7 19/11/2014 19.7 12.7 19/01/2015 15.9 13.4 19/03/2015 20.6 13.0 19/05/2015 4.8 12.3 20/07/2014 9.4 7.7 20/09/2014 13.6 8.8 20/11/2014 20.1 12.8 20/01/2015 8.3 13.4 20/03/2015 22.0 13.0 20/05/2015 5.2 12.2 21/07/2014 7.4 7.7 21/09/2014 9.1 8.8 21/11/2014 20.3 12.8 21/01/2015 7.8 13.4 21/03/2015 17.1 13.0 21/05/2015 6.5 12.2 22/07/2014 6.9 7.7 22/09/2014 7.8 8.8 22/11/2014 23.1 12.9 22/01/2015 8.5 13.4 22/03/2015 4.9 13.0 22/05/2015 5.5 12.2 23/07/2014 4.4 7.5 23/09/2014 13.3 8.8 23/11/2014 21.6 13.0 23/01/2015 9.8 13.3 23/03/2015 5.1 12.9 23/05/2015 10.4 12.2 24/07/2014 7.0 7.5 24/09/2014 13.9 8.9 24/11/2014 17.1 13.0 24/01/2015 8.8 13.3 24/03/2015 8.3 12.9 24/05/2015 10.5 12.2 25/07/2014 13.0 7.7 25/09/2014 11.8 8.9 25/11/2014 20.6 13.0 25/01/2015 7.2 13.3 25/03/2015 13.8 12.9 25/05/2015 7.5 12.2 26/07/2014 11.0 7.8 26/09/2014 15.5 9.0 26/11/2014 22.8 13.1 26/01/2015 13.8 13.3 26/03/2015 11.9 12.9 26/05/2015 9.0 12.2 27/07/2014 3.7 7.7 27/09/2014 10.7 9.0 27/11/2014 17.2 13.1 27/01/2015 6.2 13.3 27/03/2015 18.1 12.9 27/05/2015 7.3 12.2 28/07/2014 5.8 7.6 28/09/2014 6.6 9.0 28/11/2014 14.9 13.1 28/01/2015 9.7 13.2 28/03/2015 12.3 12.9 28/05/2015 7.9 12.1 29/07/2014 7.2 7.6 29/09/2014 10.8 9.0 29/11/2014 11.4 13.1 29/01/2015 10.6 13.2 29/03/2015 11.2 12.9 29/05/2015 6.1 12.1 30/07/2014 8.5 7.6 30/09/2014 17.9 9.1 30/11/2014 13.3 13.1 30/01/2015 11.3 13.2 30/03/2015 12.2 12.9 30/05/2015 5.5 12.1 31/07/2014 10.3 7.7 1/10/2014 23.2 9.3 1/12/2014 15.5 13.1 31/01/2015 12.5 13.2 31/03/2015 6.3 12.9 31/05/2015 5.0 12.1 1/08/2014 12.7 7.9 2/10/2014 13.7 9.3 2/12/2014 15.0 13.2 1/02/2015 8.4 13.2 1/04/2015 6.5 12.9 1/06/2015 4.3 12.1 2/08/2014 10.6 8.0 3/10/2014 17.3 9.4 3/12/2014 16.3 13.2 2/02/2015 9.4 13.2 2/04/2015 8.0 12.9 2/06/2015 5.3 12.0 3/08/2014 11.0 8.1 4/10/2014 19.2 9.5 4/12/2014 14.4 13.2 3/02/2015 13.6 13.2 3/04/2015 14.5 12.9 3/06/2015 5.8 12.0 4/08/2014 6.4 8.0 5/10/2014 17.2 9.6 5/12/2014 10.8 13.2 4/02/2015 10.0 13.2 4/04/2015 5.0 12.8 4/06/2015 6.4 12.0 5/08/2014 11.7 8.1 6/10/2014 32.0 9.8 6/12/2014 9.2 13.1 5/02/2015 11.2 13.1 5/04/2015 3.9 12.8 5/06/2015 8.0 12.0 6/08/2014 18.9 8.4 7/10/2014 31.4 10.0 7/12/2014 10.9 13.1 6/02/2015 9.6 13.1 6/04/2015 8.1 12.8 6/06/2015 10.8 12.0 7/08/2014 17.6 8.6 8/10/2014 10.9 10.0 8/12/2014 11.3 13.1 7/02/2015 7.9 13.1 7/04/2015 6.3 12.8 7/06/2015 6.3 12.0 8/08/2014 12.6 8.7 9/10/2014 10.1 10.0 9/12/2014 20.0 13.2 8/02/2015 9.4 13.1 8/04/2015 5.8 12.8 8/06/2015 6.3 12.0 9/08/2014 10.5 8.8 10/10/2014 12.7 10.1 10/12/2014 15.5 13.2 9/02/2015 14.8 13.1 9/04/2015 10.7 12.7 9/06/2015 5.0 11.9 10/08/2014 10.5 8.8 11/10/2014 18.2 10.1 11/12/2014 9.0 13.1 10/02/2015 6.7 13.1 10/04/2015 13.4 12.7 10/06/2015 7.8 11.9 11/08/2014 14.1 9.0 12/10/2014 15.8 10.2 12/12/2014 17.1 13.2 11/02/2015 8.4 13.1 11/04/2015 8.6 12.7 11/06/2015 5.6 11.9 12/08/2014 11.4 9.0 13/10/2014 15.3 10.2 13/12/2014 12.8 13.2 12/02/2015 10.9 13.0 12/04/2015 8.0 12.7 12/06/2015 5.6 11.9 13/08/2014 12.8 9.1 14/10/2014 7.4 10.2 14/12/2014 12.0 13.2 13/02/2015 7.6 13.0 13/04/2015 11.1 12.7 13/06/2015 6.1 11.9 14/08/2014 13.9 9.2 15/10/2014 3.3 10.1 15/12/2014 13.6 13.2 14/02/2015 8.2 13.0 14/04/2015 11.7 12.7 14/06/2015 4.8 11.8 15/08/2014 13.1 9.3 16/10/2014 6.4 10.1 16/12/2014 14.7 13.2 15/02/2015 8.8 13.0 15/04/2015 13.9 12.7 15/06/2015 6.7 11.8 16/08/2014 8.0 9.3 17/10/2014 10.9 10.1 17/12/2014 32.7 13.3 16/02/2015 8.8 13.0 16/04/2015 13.8 12.7 16/06/2015 5.1 11.8 17/08/2014 4.4 9.2 18/10/2014 10.4 10.1 18/12/2014 25.9 13.4 17/02/2015 7.9 12.9 17/04/2015 23.9 12.8 17/06/2015 4.3 11.8 18/08/2014 4.0 9.1 19/10/2014 8.8 10.1 19/12/2014 22.0 13.4 18/02/2015 11.5 12.9 18/04/2015 13.4 12.8 18/06/2015 4.4 11.8 19/08/2014 5.4 9.0 20/10/2014 20.8 10.2 20/12/2014 18.8 13.4 19/02/2015 10.9 12.9 19/04/2015 7.2 12.7 19/06/2015 3.7 11.7 20/08/2014 7.9 9.0 21/10/2014 10.9 10.2 21/12/2014 13.3 13.4 20/02/2015 8.0 12.9 20/04/2015 3.7 12.7 20/06/2015 5.5 11.7 21/08/2014 5.3 8.9 22/10/2014 8.2 10.2 22/12/2014 12.5 13.4 21/02/2015 4.4 12.9 21/04/2015 2.7 12.7 21/06/2015 5.6 11.7 22/08/2014 6.2 8.8 23/10/2014 15.5 10.2 23/12/2014 9.6 13.4 22/02/2015 5.4 12.8 22/04/2015 4.9 12.6 22/06/2015 4.0 11.7 23/08/2014 5.6 8.8 24/10/2014 22.4 10.3 24/12/2014 20.2 13.5 23/02/2015 5.2 12.8 23/04/2015 5.7 12.6 23/06/2015 5.9 11.7 24/08/2014 5.3 8.7 25/10/2014 20.6 10.4 25/12/2014 27.9 13.5 24/02/2015 7.8 12.8 24/04/2015 8.0 12.6 24/06/2015 6.1 11.7 25/08/2014 3.9 8.6 26/10/2014 28.1 10.6 26/12/2014 11.8 13.5 25/02/2015 7.9 12.8 25/04/2015 8.4 12.6 25/06/2015 7.4 11.7 26/08/2014 7.1 8.6 27/10/2014 36.8 10.8 27/12/2014 16.8 13.5 26/02/2015 6.6 12.7 26/04/2015 6.6 12.6 26/06/2015 9.0 11.6 27/08/2014 8.5 8.6 28/10/2014 28.7 11.0 28/12/2014 7.6 13.5 27/02/2015 10.8 12.7 27/04/2015 8.1 12.6 27/06/2015 5.9 11.6 28/08/2014 7.9 8.6 29/10/2014 23.7 11.1 29/12/2014 7.3 13.5 28/02/2015 8.1 12.7 28/04/2015 9.0 12.5 28/06/2015 7.4 11.6 29/08/2014 8.5 8.6 30/10/2014 33.2 11.2 30/12/2014 15.3 13.5 29/04/2015 6.1 12.5 29/06/2015 7.6 11.6 30/08/2014 6.1 8.5 31/10/2014 42.9 11.5 31/12/2014 25.5 13.6 30/04/2015 6.4 12.5 30/06/2015 10.5 11.6 31/08/2014 6.8 8.5
Appendix 4: Monitoring Results Groundwater Surface Water and
Surface Water
SW2 - Coal Shaft Creek
Date Category Comment ph EC Turbidity DO TSS Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe Cu F NH3 NO2 NO3 N P
(as CaCO3) (as CaCO3) (as N) (as N) (as N) uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 17-Jul-14 Ecotox Low flow 7.9 800 2.0 <5 164 14 99 116 37 38 0.03 0.223 <0.005 0.69 <0.001 <0.1 0.02 <0.01 0.01 0.3 <0.01 30-Jul-14 Monthly Low flow 7.7 888 2 25 <5 164 18 103 117 37 37 0.03 0.092 0.017 0.52 <0.001 Mod flow, backed up 27-Aug-14 Discharge Event from river 7.1 360 238 95 96 32 7 90 29 15 13 5.02 0.176 0.061 5.24 0.003 28-Aug-14 Discharge Mod flow 7.8 740 84 28 29-Aug-14 Discharge Mod flow 7.1 728 45 12 30-Aug-14 Discharge Low flow 7.6 751 21 6 31-Aug-14 Discharge Low flow 7.2 720 20 5 1-Sep-14 Discharge Low flow 7.2 680 20 6 6-Sep-14 Discharge Mod Flow 7.1 674 30 6 7-Sep-14 Discharge Mod Flow 7.4 606 42 <5 8-Sep-14 Discharge Low flow 7.6 590 35 <5 9-Sep-14 Discharge Low flow 7.6 576 25 6 10-Sep-14 Discharge Low flow 7.3 594 33 7 11-Sep-14 Discharge, Macro Low flow 7.5 494 14 91 3 76 67 22 21 1.21 0.092 0.015 1.22 0.001 <0.1 <0.01 <0.01 0.1 0.7 0.02 30-Sep-14 Monthly Low flow 7.5 570 5 4 <5 102 4 73 76 25 24 0.16 0.208 0.006 0.79 <0.001 31-Oct-14 Monthly Low flow 8.1 712 3 5 <5 151 7 74 86 29 29 0.02 0.634 <0.005 0.67 <0.001 27-Nov-14 Monthly Low flow 7.6 686 11 2 10 166 10 37 96 30 30 0.09 1.500 0.006 0.45 <0.001 9-Dec-14 Discharge Event Steady Flow 7.2 319 251 3 87 31 7 92 33 14 12 5.99 0.150 0.072 5.78 0.006 11-Dec-14 Discharge Low flow, Brown 8.0 285 100 <5 12-Dec-14 Discharge Mod flow 7.8 614 14 37 13-Dec-14 Discharge Mod flow 7.9 810 6 <5 15-Dec-14 Discharge Low flow 7.1 801 2 <5 26-Dec-14 Discharge Light brown 8.1 795 18 27-Dec-14 Discharge High flow, brown 7.6 765 7 6 28-Dec-14 Discharge Mod flow, brown 7.5 756 7 <5 29-Dec-14 Discharge Mod flow, brown 7.4 636 6 <5 30-Dec-14 Discharge Mod flow 7.6 736 6 <5 31-Dec-14 Discharge Low flow 7.6 796 6 <5 1-Jan-15 Discharge Low flow 7.6 802 4 <5 2-Jan-15 Discharge Low flow 7.6 822 6 <5 20-Jan-15 Discharge Event Steady Flow 7.9 354 101 2 61 68 7 59 36 17 18 2.13 0.132 0.037 2.1 0.003 21-Jan-15 Discharge Low flow 7.3 377 49 12 22-Jan-15 Discharge Low flow 7.6 745 7 <5 23-Jan-15 Discharge Low flow 7.0 252 13 6 28-Jan-15 Discharge Steady flow 7.5 627 14 <5 28-Jan-15 Ecotox Steady Flow 7.5 627 14 5 126 5 76 67 20 25 0.59 0.035 0.014 0.59 0.001 0.1 0.02 <0.01 0.01 0.6 0.01 29-Jan-15 Discharge Low flow 7.8 650 11 <5 26-Feb-15 Monthly Low flow 7.4 675 13 6 <5 171 11 62 74 25 30 0.03 0.577 <0.005 0.62 <0.001 23-Mar-15 Discharge Event Mod flow, Brown 7.7 430 56 76 <5 37 4 112 42 19 16 1.92 0.072 0.009 2.06 0.001 24-Mar-15 Discharge Low flow, brown 7.2 462 28 15 31-Mar-15 Discharge Brown 7.9 410 89 20 1-Apr-15 Discharge Mod flow, brown 7.4 371 54 14 2-Apr-15 Discharge low flow brown 7.6 529 19 <5 4-Apr-15 Discharge brown 7.6 447 53 23 5-Apr-15 Discharge low flow brown 7.9 613 10 5 6-Apr-15 Discharge brown 8.0 666 10 10 7-Apr-15 Discharge low flow brown 8.1 615 18 7 8-Apr-15 Discharge mod flow clear 8.0 628 10 <5 9-Apr-15 Discharge low flow clear 7.9 618 78 <5 10-Apr-15 Discharge low flow clear 7.6 632 7 6 22-Apr-15 Discharge Event high flow brown 7.6 146 196 42 105 25 3 30 14 7 5 5.36 0.144 0.035 6.2 0.042 23-Apr-15 Discharge mod flow brown 7.4 124 160 256 24-Apr-15 Discharge mod flow brown 7.0 179 101 28 25-Apr-15 Discharge mod flow brown 7.7 140 79 33 26-Apr-15 Discharge low flow brown 7.8 145 76 18 27-Apr-15 Discharge low flow brown 8.2 179 72 22 28-Apr-15 Discharge low flow brown 8.2 159 63 11 29-Apr-15 Discharge low flow brown 7.8 173 60 9 30-Apr-15 Discharge low flow brown 7.5 170 79 55 1-May-15 Discharge low flow brown 7.7 170 68.0 62 2-May-15 Discharge high flow brown 7.9 137 72.2 31 3-May-15 Discharge high flow brown 7.7 129 115.0 48 4-May-15 Discharge high flow brown 7.6 127 149.0 54 5-May-15 Discharge mod flow brown 7.8 153 107.0 32 6-May-15 Discharge low flow brown 7.3 169 101.0 67 7-May-15 Discharge low flow brown 7.9 780 213.0 262 8-May-15 Discharge low flow brown 7.6 290 72.0 23 22-May-15 Discharge Event high flow turbid brown 7.5 159 96.0 54 52 24 3 44 14 9 7 4.56 0.115 0.055 4.38 0.03 23-May-15 Discharge SW2RC - train in loop 7.7 157 17.9 11 24-May-15 Discharge High flow light brown 7.2 167 24.2 10 25-May-15 Discharge SW2RC - train in loop 7.6 168 42.1 11 26-May-15 Discharge SW2RC - train in loop 8.0 180 40.8 14 27-May-15 Discharge Nil observation 6.8 195 15.4 7 28-May-15 Discharge Low flow turbid brown 7.9 236 26.0 10 18-Jun-15 Discharge Event Med flow and turbid 7.3 239 24.6 66 83 44 6 44 29 14 12 3.12 0.079 0.016 2.3 0.002 Min 6.8 124 2.0 <5 24 <1 30 14 7 5 0.02 0.035 <0.005 0.45 0.001 Avg 7.6 476 51.4 35 93 7 71 60 21 21 2.02 0.282 0.03 2.24 0.010 Max 8.2 888 251.0 262 171 18 112 117 37 38 5.99 1.500 0.072 6.20 0.042 Var 0.1 61835 3179.5 2699 3510 19 634 1192 85 108 4.95 0.144 0.001 4.38 0.000 SD 0.3 249 56.4 52 59 4 25 35 9 10 2.23 0.380 0.023 2.09 0.015
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.9 0.008 ID 0.0014 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
SW2 RC - Coal Shaft Creek at Rail Siding Culvert (Entrance)
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3(as Bicarb BOD Na
(as CaCO3) (as CaCO3) CaCO3) (as CaCO3) uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 Monthly Low flow 8.3 884 1 114 574 <5 249 164 3 131 122 37 38 0.04 0.012 0.023 0.09 2 162 <2 92 27-Aug-14 Discharge Event Mod flow 7.2 615 76 110 400 28 174 99 8 119 68 27 26 2.02 0.091 0.06 1.87 <1 99 5 63 30-Sep-14 Monthly Low flow 8.2 608 13 10 353 8 174 103 <1 85 81 27 26 0.35 0.101 0.021 0.6 <1 103 4 61 31-Oct-14 Monthly Low flow 8.1 803 3 6 405 7 192 160 2 116 99 29 29 0.24 0.263 0.027 1.22 <1 160 <2 68 27-Nov-14 Monthly Low flow 7.6 694 36 6 464 26 190 109 7 107 89 30 28 1.11 0.497 0.091 2.01 <1 109 3 67 9-Dec-14 Discharge Event Steady flow 8.0 390 7 2 295 38 80 28 2 97 25 14 11 4.92 0.11 0.061 5.32 <1 28 <2 39 20-Jan-15 Discharge Event Fast flow 7.9 346 18.1 4.2 178 90 111 46 3 88 31 18 16 3.96 0.143 0.05 3.65 <1 46 <2 36 26-Feb-15 Monthly Low flow 7.7 690 13 5.96 358 45 192 158 5 80 80 26 31 0.3 0.248 0.027 1.14 <1 158 <2 72 23-Mar-15 Discharge Event Mod flow, Brown 7.8 512 20 78 265 <5 126 64 3 106 52 21 18 0.61 0.02 0.021 0.66 <1 64 <5 47 22-Apr-15 Discharge Event high flow brown 8.1 159 172 40 81 88 38 22 4 30 15 7 5 4.7 0.096 0.032 5.86 <1 22 <2 16 22-May-15 Discharge Event v high flow turbid brown 7.4 141 21 40 72 19 45 32 2 26 15 8 6 2.76 0.057 0.047 2.77 <1 32 <2 16 18-Jun-15 Discharge Event Mod flow slightly turbid 7.7 322 42.4 70 165 <5 102 43 2 59 31 18 14 0.36 0.028 0.023 0.58 <1 43 <2 29 Min 7.2 141 1 72 7 22 <1 26 15 7 5 0.04 0.012 0.021 0.09 <1 22 16 Avg 7.8 514 21 301 39 86 87 59 22 21 1.78 0.139 0.040 2.15 <1 86 51 Max 8.3 884 76 574 90 164 8 131 122 37 38 4.92 0.497 0.091 5.86 <1 162 92 Var 0.1 58950 539 23951 964 2913 5 1134 ### 84 110 3.42 0.019 0.000 3.61 2884 566 SD 0.3 243 23 155 31 54 2 34 36 9 11 1.85 0.139 0.022 1.90 54 24
ANZECC* 6.5-8.0200-300 6-50 0.055 1.9 0.008 ID
ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria SW2 RC - Coal Shaft Creek at Rail Siding Culvert (Entrance)
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 <0.001 0.076 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 0.3 <0.01 27-Aug-14 <0.001 0.033 <0.0001 0.001 <0.001 <0.001 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.1 0.4 <0.01 30-Sep-14 <0.001 0.033 <0.0001 <0.001 <0.001 <0.001 0.101 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.03 0.4 <0.01 31-Oct-14 0.002 0.053 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.02 <0.01 0.07 0.8 0.01 27-Nov-14 <0.001 0.055 <0.0001 <0.001 <0.001 <0.001 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.04 0.01 0.47 1.7 0.06 9-Dec-14 0.007 0.039 <0.0001 0.003 0.004 0.001 <0.001 0.003 0.04 <0.001 <0.001 <0.05 <0.0001 0.1 0.02 <0.01 0.17 0.9 0.04 20-Jan-15 0.001 0.036 <0.0001 0.002 0.003 0.002 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.18 0.8 0.05 26-Feb-15 <0.001 0.031 <0.0001 <0.001 <0.001 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.01 <0.01 <0.01 0.3 <0.01 23-Mar-15 <0.001 0.022 <0.0001 <0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.08 0.7 0.01 22-Apr-15 <0.001 0.021 <0.0001 0.004 0.004 <0.001 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.06 1 0.09 22-May-15 <0.001 0.016 <0.0001 0.001 0.002 0.001 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 0.7 0.1 18-Jun-15 <0.001 0.019 <0.0001 <0.001 0.002 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.02 <0.01 0.02 0.5 0.12 Min <0.001 0.016 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 0.3 <0.01 Avg <0.001 0.036 <0.0001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.11 0.7 Max <0.001 0.076 <0.0001 0.003 0.004 0.002 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.04 <0.1 0.47 1.7 0.06 Var 0.000 0.000 0.000 0.000 0.000 0.0 0.00 0.02 0.2 0.00 SD 0.018 0.001 0.002 0.001 0.001 0.0 0.01 0.13 0.4 0.02
ANZECC* 0.013 0.0002 0.001 0.0014 0.0034 0.011 0.011 5E-05 0.37 0.0006 0.9
ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
SW6
Date Category Comment ph EC Turbidity DO TSS Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe Cu (as CaCO3) (as CaCO3) uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 Monthly No flow 27-Aug-14 Discharge Event Low-mod flow 8.0 715 95 99 29 35 5 197 54 44 21 2.23 0.034 0.01 2.15 0.001 30-Sep-14 Monthly No flow 31-Oct-14 Monthly No flow 27-Nov-14 Monthly No flow 9-Dec-14 Discharge Event No flow 20-Jan-15 Discharge Event Fast flow 8.0 740 92 30 53 47 6 264 64 53 31 2.2 0.058 0.014 2.31 0.002 26-Feb-15 Monthly Dry 23-Mar-15 Discharge Event Mod flow, brown 8.3 520 47 90 <5 42 4 127 48 23 15 1.36 0.015 0.006 1.36 0.002 22-Apr-15 Discharge Event High flow brown 8.2 379 65 60 291 30 3 76 22 14 10 2.34 0.134 0.013 2.52 0.002 22-May-15 Discharge Event High flow brown 7.5 492 70 62 76 55 3 130 46 28 22 4.54 0.078 0.015 4.04 0.003 18-Jun-15 Discharge Event Low flow clear 6.8 760 12 68 <5 41 20 222 60 46 32 0.34 0.052 0.006 0.61 0.002 Min 6.8 379 12 <5 30 3 76 22 14 10 0.34 0.015 <0.005 <0.05 <0.06 Avg 7.8 601 64 112 42 7 169 49 35 22 2.17 0.062 0.01 2.165 0.002 Max 8.3 760 95 53 55 20 264 64 53 32 4.54 0.134 0.014 2.31 0.00 Var 0.3 25065 954 288 77 43 4910 222 232 75 1.93 0.002 0.000 0.26 0.00 SD 0.6 158 31 17 9 7 70 15 15 9 1.39 0.041 0.004 0.51 0.00
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.9 0.008 ID 0.001 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
SW9 - Un-named Tributary (Fisher-Webster)
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb BOD Na (as CaCO3) (as CaCO3) (as CaCO3) (as CaCO3) mg/l uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 Monthly No flow 27-Aug-14 Discharge Event Low flow 7.3 246 65 85 159 32 31 14 8 21 56 6 4 1.53 0.054 0.022 1.78 <1 14 4 32 11-Sep-14 Macro Trickle 6.3 203 14 16 8 22 40 6 4 1.63 0.064 0.017 2.25 <1 16 31 30-Sep-14 Monthly No flow 31-Oct-14 Monthly No flow 27-Nov-14 Monthly No flow 09-Dec-14 Discharge Event Trickle 7.3 140 54 3.4 181 22 22 10 9 24 24 4 3 1.42 0.083 0.014 1.31 <1 10 5 19 20-Jan-15 Discharge Event Fast flow 7.62 106 90 1.4 54 78 16 10 8 10 16 3 2 2.23 0.055 0.029 2.62 <1 10 5 16 26-Feb-15 Monthly No flow 23-Mar-15 Discharge Event Low flow, brown 7.1 120 160 71 86 19 22 14 6 20 33 4 3 1.89 0.027 0.009 1.64 <1 14 6 19 22-Apr-15 Discharge Event low flow brown 7.7 174 53 63 88 50 16 12 3 <10 16 3 2 0.9 0.029 <0.005 0.81 <1 12 6 12 mod flow brown 22-May-15 Discharge Event tannins 7.5 131 36 63 66 25 29 15 5 6 24 5 4 1.93 0.034 0.006 1.86 <1 15 <2 16 Low flow brown 18-Jun-15 Discharge Event tannins 7.4 330 32 70.6 170 <5 63 25 9 28 61 12 8 0.4 0.122 0.012 3.26 <1 25 <2 37 Min 6.3 106.0 32.0 1.4 54.0 14.0 16.0 10.0 3.0 6.0 16.0 3.0 2.0 0.4 0.0 0.0 0.8 <1 10.0 4.0 12.0 Avg 7.3 181.3 70.0 51.1 114.9 34.3 28.4 14.5 7.0 18.7 33.8 5.4 3.8 1.5 0.1 0.0 1.9 <1 14.5 5.2 22.8 Max 7.7 330.0 160.0 85.0 181.0 78.0 63.0 25.0 9.0 28.0 61.0 12.0 8.0 2.2 0.1 0.0 3.3 <1 25.0 6.0 37.0 Var 0.2 5783.6 1945.0 1159.0 2834.8 507.6 265.6 22.9 4.6 61.6 299.6 8.6 3.6 0.4 0.0 0.0 0.6 22.9 0.7 84.5 SD 0.4 76.1 44.1 34.0 53.2 22.5 16.3 4.8 2.1 7.8 17.3 2.9 1.9 0.6 0.0 0.0 0.8 4.8 0.8 9.2
ANZECC* 6.5-8.0 200-300 6-50 0.06 1.90 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
SW9 - Un-named Tributary (Fisher-Webster)
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 27-Aug-14 0.002 0.04 <0.0001 <0.001 0.003 0.001 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.07 <0.01 0.08 2.1 0.82 11-Sep-14 0.004 <0.1 0.01 <0.01 0.41 2.3 0.5 30-Sep-14 31-Oct-14 27-Nov-14 09-Dec-14 0.002 0.036 <0.0001 <0.001 0.002 0.001 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.13 2.2 0.83 20-Jan-15 0.002 0.033 <0.0001 0.001 0.007 0.002 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.03 <0.01 0.25 2.4 0.66 26-Feb-15 23-Mar-15 <0.001 0.024 <0.0001 0.001 0.002 0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.19 0.9 0.07 22-Apr-15 <0.001 0.019 <0.0001 <0.001 <0.001 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 <0.01 <0.01 0.18 0.9 0.06
22-May-15 <0.001 0.029 <0.0001 0.001 0.002 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.04 <0.01 0.05 2.2 0.69 18-Jun-15 0.001 0.061 <0.0001 <0.001 0.002 <0.001 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.05 1.6 0.36 Min 0.001 0.019 0.001 0.002 0.001 0.001 0.100 0.010 0.050 0.900 0.060 Avg 0.002 0.035 0.001 0.003 0.001 0.002 0.100 0.034 0.168 1.825 0.499 Max 0.002 0.061 0.001 0.007 0.002 0.003 0.100 0.070 0.410 2.400 0.830 Var 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.015 0.382 0.096 SD 0.001 0.014 0.000 0.002 0.001 0.001 0.023 0.121 0.618 0.310
0.013 0.0002 0.001 0.0014 0.0034 0.011 0.011 0.00005 0.9 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
SW10 - Coal Shaft Creek (Holmes Upstream)
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb Na BOD (as CaCO3) (as CaCO3) (as (as
uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l CaCO3) CaCO3) mg/l mg/l 30-Jul-14 Monthly No flow 27-Aug-14 Discharge Event Mod flow 7.9 55 100 90 35 72 16 10 8 <10 45 3 2 3.71 0.025 0.011 3.64 <1 10 8 <2 30-Sep-14 Monthly No flow 31-Oct-14 Monthly No flow 27-Nov-14 Monthly No flow 9-Dec-14 Discharge Event No flow 20-Jan-15 Discharge Event Steady flow 8.5 79 43 2 40 21 16 6 8 9 7 3 2 2 0.033 0.02 1.77 <1 6 8 5 26-Feb-15 Monthly Dry 23-Mar-15 Discharge Event No flow 22-Apr-15 Discharge Event mod flow 7.9 77 257 NA 39 12 34 12 7 6 30 7 4 2.36 0.019 0.011 1.24 <1 12 15 3 mod flow and tannins poss 22-May-15 Discharge Event present 7.3 58 140 59 29 29 27 11 6 2 10 6 3 6.19 0.066 0.026 5.68 <1 11 10 4 Low flow turbid brown poss 18-Jun-15 Discharge Event tannins present 6.8 116 153 74 59 18 40 17 16 2 20 8 5 8.14 0.263 0.015 8.51 <1 17 11 4 Min 6.8 55 43 2 29 12 16 6 6 2 7 3 2 2.00 0.019 0.011 1.24 6 8 3 Avg 7.7 77 139 56 40 30 27 11 9 5 22 5 3 4.48 0.081 0.017 4.17 11 10 4 Max 8.5 116 257 90 59 72 40 17 16 9 45 8 5 8.14 0.263 0.026 8.51 17 15 5 Var 0.4 593 6214 1468 127 578 115 16 16 12 241 5 2 6.89 0.011 0.000 8.94 16 8 1 SD 0.6 24 79 38 11 24 11 4 4 3 16 2 1 2.62 0.103 0.006 2.99 4 3 1
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.9 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
SW10 - Coal Shaft Creek (Holmes Upstream)
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l (as N) mg/l mg/l (as N) mg/l mg/l mg/l 30-Jul-14 27-Aug-14 <0.001 0.012 <0.0001 0.002 0.004 <0.001 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 <0.01 1.1 0.08 20-Jan-15 <0.001 0.013 <0.0001 0.002 0.01 0.033 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 1.2 0.08 22-Apr-15 <0.001 0.032 <0.0001 <0.001 0.002 0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.04 <0.01 <0.01 2.3 0.17 22-May-15 <0.001 0.018 <0.0001 0.004 0.02 <0.001 <0.001 0.004 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.04 <0.01 0.01 1.6 0.14 18-Jun-15 <0.001 0.035 <0.0001 0.006 0.007 <0.001 <0.001 0.005 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 <0.01 1.8 0.28 Min 0.012 0.002 0.002 0.001 0.002 0.1 0.04 0.01 1.1 0.08 Avg 0.022 0.004 0.009 0.017 0.004 0.1 0.04 0.03 1.6 0.15 Max 0.035 0.006 0.020 0.033 0.005 0.1 0.04 0.04 2.3 0.28 Var 0.000 0.000 0.000 0.001 0.000 0.00 0.00 0.2 0.01
SD 0.011 0.002 0.007 0.023 0.001 0.00 0.02 0.5 0.08
0.013 0.0002 0.001 0.0014 0.0034 0.011 0.011 0.00005 0.9 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria GB1 - Mammy Johnsons River
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb BOD Na (as CaCO ) (as CaCO ) (as CaCO ) (as CaCO ) uS/cm NTU % mg/l mg/l mg/l 3 3 mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 3 3 mg/l mg/l mg/l mg/l mg/l mg/l 17-Jul-14 Ecotox Low flow 8.1 350 5.0 <5 72 59 9 7 70 14 9 0.11 0.059 0.009 0.74 <1 59 <2 41 30-Jul-14 Monthly Low flow 8.1 369 2.0 56 240 <5 72 66 6 9 70 14 9 0.07 0.038 0.006 0.64 <1 66 <2 46 27-Aug-14 Discharge Event High flow 7.3 220 87.0 97 107 78 38 26 7 14 53 7 5 2.54 0.112 0.014 2.87 <1 26 <2 30 28-Aug-14 Discharge High flow 7.7 130 95.0 45 29-Aug-14 Discharge High flow 7.1 118 52.0 11 30-Aug-14 Discharge Mod flow 7.3 140 36.0 5 31-Aug-14 Discharge Mod flow 7.4 146 35.0 5 1-Sep-14 Discharge Mod flow 7.5 139 22.0 <5 6-Sep-14 Discharge High flow 7.8 129 82.0 29 7-Sep-14 Discharge Mod flow 7.6 133 43.0 5 8-Sep-14 Discharge Mod flow 7.6 145 30.0 <5 9-Sep-14 Discharge Mod flow 7.6 148 25.0 <5 10-Sep-14 Discharge Mod flow 7.4 157 25.0 <5 11-Sep-14 Discharge, macro Mod flow 6.8 160 <5 21 2 8 33 6 3 1.16 0.024 <0.005 1.05 <1 21 26 30-Sep-14 Monthly Low flow 7.6 237 7.0 5 121 <5 40 36 3 7 48 8 5 0.35 0.053 <0.005 1.14 <1 36 <2 31 31-Oct-14 Monthly Mod flow 7.6 372 2.0 4 164 8 65 73 6 <10 68 13 8 0.05 0.210 <0.005 0.92 <1 73 <2 38 27-Nov-14 Monthly Low flow 7.6 337 3.0 3 232 <5 65 64 6 <1 65 13 8 0.09 1.740 0.014 0.95 <1 64 <2 40 9-Dec-14 Discharge Event Low flow 7.2 321 45.0 1 210 25 63 60 9 2 64 12 8 0.76 0.984 0.031 3.28 <1 60 3 44 11-Dec-14 Discharge Low flow, Brown 7.6 244 63.0 9 12-Dec-14 Discharge Mod flow 7.9 305 52.0 34 13-Dec-14 Discharge Mod flow 7.1 318 35.0 8 15-Dec-14 Discharge No flow 7.2 298 10.0 <5 26-Dec-14 Discharge Light brown 7.6 102 115 27-Dec-14 Discharge Mod flow, brown 7.04 160 26.0 25 28-Dec-14 Discharge Mod flow, brown 7.03 177 29.0 9 29-Dec-14 Discharge Mod flow, brown 6.92 204 29.0 13 30-Dec-14 Discharge Mod flow, brown 6.94 217 29.0 6 31-Dec-14 Discharge Low flow, lt brown 7.17 216 24.0 6 1-Jan-15 Discharge Mod flow, brown 7.16 224 18.0 <5 2-Jan-15 Discharge Mod flow, brown 7.07 239 21.0 <5 20-Jan-15 Discharge Event Steady flow 7.84 237 44.0 3 121 46 59 43 8 4 38 12 7 1.13 0.438 0.046 3.08 <1 43 3 31 21-Jan-15 Discharge Low flow 7.7 140 41.0 16 22-Jan-15 Discharge Low flow 6.84 135 29.0 10 23-Jan-15 Discharge Low flow 6.87 168 32.0 16 28-Jan-15 Discharge Low flow 8.1 156 46.0 14 28-Jan-15 Ecotox Low flow 8.1 156 46.0 16 22 33 7 5 23 4 3 1.90 0.053 0.007 2.36 <1 33 4 22 29-Jan-15 Discharge Low flow 7.39 235 36.0 10 26-Feb-15 Monthly Low flow 7.74 279 39.0 6 143 <5 63 60 4 5 45 12 8 0.09 0.186 <0.005 1.22 <1 60 <2 34 23-Mar-15 Discharge Event Low flow 6.9 151 70.0 70 77 17 22 22 5 <1 30 4 3 1.97 0.032 0.010 1.79 <1 22 <2 15 24-Mar-15 Discharge Low flow, brown 7.29 136 36.0 16 31-Mar-15 Discharge Brown 7.71 194 45.0 20 1-Apr-15 Discharge low flow brown 7.9 200 26.0 15 2-Apr-15 Discharge mod flow 8.83 222 30.0 <5 4-Apr-15 Discharge brown 7.67 191 26.0 10 5-Apr-15 Discharge high flow brown 7.73 166 40.0 24 6-Apr-15 Discharge brown 8 163 27.0 7 7-Apr-15 Discharge low flow brown 7.59 139 41.0 15 8-Apr-15 Discharge mod flow brown 7.97 168 30.0 5 9-Apr-15 Discharge mod flow brown 8.12 157 25.0 5 10-Apr-15 Discharge low flow brown 7.71 166 23.0 6 22-Apr-15 Discharge Event Mod flow brown 6.84 197 46.0 66 100 152 18 14 5 2 26 4 2 2.85 0.067 0.012 2.40 <1 14 <2 17 23-Apr-15 Discharge mod flow 7 127 44.0 10 24-Apr-15 Discharge low flow brown 6.91 189 34.0 11 25-Apr-15 Discharge mod flow brown 6.95 172 18.0 10 26-Apr-15 Discharge mod flow brown 7.54 187 25.0 5 27-Apr-15 Discharge low flow brown 7.7 221 21.0 <5 28-Apr-15 Discharge mod flow brown 7.76 197 19.0 <5 29-Apr-15 Discharge mod flow brown 7.59 216 17.0 6 30-Apr-15 Discharge low flow brown 7.57 234 17.0 <5 1-May-15 Discharge low flow brown 8.04 292 15.0 10 2-May-15 Discharge high flow brown 7.77 129 68.0 26 3-May-15 Discharge high flow brown 6.55 90 77.0 22 4-May-15 Discharge high flow brown 7.54 122 39.0 14 5-May-15 Discharge mod flow brown 7.72 166 28.0 8 6-May-15 Discharge low flow brown 7.1 161 24.0 10 7-May-15 Discharge mod flow clear 7.4 179 24.0 8 8-May-15 Discharge low flow brown 7.9 201 18.0 7 22-May-15 Discharge Eventv high flow turbid brown7.84 97 226.0 47 49 360 25 22 4 <10 17 5 3 4.37 0.109 0.027 4.35 <1 22 4 15 23-May-15 Discharge High flow 7.24 86 31.0 31 24-May-15 Discharge Mod flow light brown 7.26 118 22.0 13 25-May-15 Discharge Mod flow 7.15 134 31.0 6 26-May-15 Discharge Low flow Light brown 7.24 143 23.0 <5 27-May-15 Discharge Nil observation 6.12 185 15.0 8 28-May-15 Discharge Mod flow slight turbid 7.86 206 13.0 7 18-Jun-15 Discharge Event Mod flow clear 7.77 302 8.0 76 155 <5 72 49 5 9 55 14 9 0.21 0.028 <0.005 0.99 <1 49 4 36 Min 6.1 86.0 2.0 1.0 107 <5 <6 21 <1 <1 33 6 3 0.05 0.024 <0.005 0.64 <1 21 3 26 Avg 7.5 191.5 35.2 36.2 171 50 57 11 7 0.70 0.406 1.63 <1 50 3 36 Max 8.8 372.0 226.0 97.0 240 115 72 73 9 14 70 14 9 2.54 1.740 0.046 3.28 <1 73 3 46 Var 0.2 4493.3 875.6 1289.6 3191 711 175 353 6 15 201 10 4 0.68 0.346 0.000 1.21 353 0 49 SD 0.4 67.0 29.6 35.9 56 27 13 19 2 4 14 3 2 0.83 0.588 0.015 1.10 19 0 7
ANZECC* 6.5-8.0 200-300 6-50 0.06 1.900 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria GB1 - Mammy Johnsons River
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 17-Jul-14 0.001 0.04 <0.0001 <0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.03 0.3 0.01 30-Jul-14 <0.001 0.04 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.10 0.3 0.03 27-Aug-14 <0.001 0.05 <0.0001 0.001 0.002 0.002 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.22 1.3 0.12 11-Sep-14 <0.001 <0.1 <0.01 <0.01 0.08 0.6 0.04 30-Sep-14 <0.001 0.040 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.04 0.3 0.07 31-Oct-14 0.002 0.040 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.05 0.4 0.06 27-Nov-14 0.002 0.060 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.04 0.7 0.13 9-Dec-14 0.002 0.070 <0.0001 0.002 0.004 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.02 0.9 0.20 20-Jan-15 0.002 0.060 <0.0001 <0.001 0.044 0.002 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.15 <0.01 0.08 1.1 0.21 28-Jan-15 0.002 <0.1 0.02 <0.01 0.04 1.6 0.26 29-Jan-15 26-Feb-15 0.002 0.030 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.03 <0.01 0.04 0.6 0.12 23-Mar-15 <0.001 0.040 <0.0001 0.001 0.001 0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.24 1 0.08 22-Apr-15 <0.001 0.050 <0.0001 0.001 0.002 0.002 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.27 1.7 0.13 22-May-15 0.001 0.080 <0.0001 0.002 0.003 0.004 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.14 1.9 0.29 18-Jun-15 <0.001 0.430 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.05 0.2 0.02 Min <0.001 0.04 <0.001 <0.001 <0.001 <0.001 <0.01 0.02 0.3 <0.01 Avg 0.05 0.07 0.7 Max 0.002 0.07 0.002 0.044 0.002 0.002 0.05 0.22 1.3 0.21 Var 0.000 0.00 0.000 0.000 0.000 0.000 0.00 0.00 0.1 0.01 SD 0.000 0.01 0.001 0.021 0.000 0.001 0.03 0.06 0.4 0.07
ANZECC* 0.013 0.0002 0.001 0.0014 0.0034 0.011 0.01 5E-05 0.37 0.0006 0.90 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria Highnoon - Mammy Johnsons River
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb BOD Na (as CaCO3) (as CaCO3) (as CaCO3) (as CaCO3) uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 Monthly Low flow 8.0 402 2.0 42 261 <5 83 69 6 17 80 15 11 0.08 0.090 <0.005 0.35 <1 69 <2 52 27-Aug-14 Discharge Event High flow 7.0 262 98.0 82 170 72 45 32 5 17 53 8 6 2.59 0.116 0.016 2.76 <1 32 <2 32 28-Aug-14 Discharge High flow 8.1 155 115.0 41 29-Aug-14 Discharge High flow 7.4 133 58.0 18 30-Aug-14 Discharge Mod flow 7.9 179 38.0 8 31-Aug-14 Discharge Mod flow 7.8 154 41.0 <5 1-Sep-14 Discharge Mod flow 7.8 156 55.0 <5 6-Sep-14 Discharge High flow 7.7 168 95.0 28 7-Sep-14 Discharge Mod flow 8.1 142 43.0 8 8-Sep-14 Discharge Mod flow 8 150 30.0 <5 9-Sep-14 Discharge Mod flow 8.2 178 26.0 <5 10-Sep-14 Discharge Mod flow 7.8 167 27.0 23 11-Sep-14 Discharge Mod flow 7 170 6 30-Sep-14 Monthly No flow 7.7 245 9.0 6 125 <5 47 41 3 9 48 9 6 0.43 0.060 <0.005 1.21 <1 36 3 32 31-Oct-14 Monthly No flow 7.9 390 2.0 6 174 8 67 73 3 <10 72 12 9 0.06 0.074 <0.005 0.64 <1 73 <2 40 27-Nov-14 Monthly Low flow 7.53 371 2.0 4 235 <5 76 67 4 6 73 14 10 0.02 0.191 0.010 0.34 <1 67 <2 46 9-Dec-14 Discharge Event Low flow 7.14 389 51.0 3 265 55 96 74 12 36 71 17 13 0.78 0.739 0.020 2.66 <1 74 8 55 11-Dec-14 Discharge Low flow, brown 7.88 314 37.0 17 12-Dec-14 Discharge Low flow 7.88 231 54.0 23 13-Dec-14 Discharge Low flow 7.12 364 27.0 6 15-Dec-14 Discharge Low-Mod flow 7.3 272 26.0 <5 26-Dec-14 Discharge Light brown 7.8 122 156 27-Dec-14 Discharge Mod flow, brown 7.2 172 21.0 32 28-Dec-14 Discharge Mod flow, brown 7.05 204 23.0 9 29-Dec-14 Discharge Low flow, brown 6.79 209 28.0 10 30-Dec-14 Discharge Low flow, brown 7.14 266 27.0 7 31-Dec-14 Discharge Low flow, lt brown 7.26 270 24.0 <5 1-Jan-15 Discharge Low flow, lt brown 7.25 289 21.0 6 2-Jan-15 Discharge Low flow, lt brown 7.22 286 15.0 <5 20-Jan-15 Discharge Event Low flow 80mm 7.4 264 12.0 3 135 17 67 52 8 12 40 12 9 0.49 0.466 0.071 2.47 <1 52 5 33 21-Jan-15 Discharge Low flow 7.8 229 32.0 16 22-Jan-15 Discharge Low flow 7.62 308 19.0 6 23-Jan-15 Discharge Low flow 7.6 627 21.0 <5 28-Jan-15 Discharge Low flow 7.8 269 29.0 10 29-Jan-15 Discharge Low flow 7.17 249 59.0 7 26-Feb-15 Monthly No flow (still) 7.4 294 27.0 6 157 <5 67 60 4 7 47 12 9 0.10 0.168 0.008 0.99 <1 60 <2 37 23-Mar-15 Discharge Event Mod flow 6.8 157 73.0 69 80 25 22 22 4 3 30 4 3 1.98 0.032 0.010 2.02 <1 22 4 15 24-Mar-15 Discharge Low flow, brown 7.7 188 34.0 27 31-Mar-15 Discharge Brown 8.73 221 46.0 10 1-Apr-15 Discharge low flow brown 7.22 244 42.0 14 2-Apr-15 Discharge mod flow brown 7.7 253 13.0 8 4-Apr-15 Discharge brown 7.84 261 45.0 15 5-Apr-15 Discharge brown 8.03 209 41.0 20 6-Apr-15 Discharge low flow brown 8.22 211 28.0 9 7-Apr-15 Discharge low flow brown 8.15 175 41.0 24 8-Apr-15 Discharge mod flow brown 7.61 169 37.0 <5 9-Apr-15 Discharge mod flow brown 8.35 192 27.0 5 10-Apr-15 Discharge low flow brown 7.32 282 26.0 <5 22-Apr-15 Discharge Event mod flow brown 6.74 134 74.0 72 68 38 18 10 4 3 25 4 2 2.14 0.048 0.007 1.66 <1 10 5 17 23-Apr-15 Discharge mod flow brown 7.24 125 55.0 15 24-Apr-15 Discharge low flow brown 7.8 191 50.0 84 25-Apr-15 Discharge mod flow brown 7.53 171 21.0 7 26-Apr-15 Discharge mod flow brown 8.44 188 27.0 6 27-Apr-15 Discharge low flow brown 7.45 196 24.0 7 28-Apr-15 Discharge low flow brown 7.94 192 22.0 <5 29-Apr-15 Discharge low flow brown 7.97 219 20.0 <5 30-Apr-15 Discharge low flow brown 7.74 242 19.0 <5 1-May-15 Discharge low flow brown 7.77 287 16 7 2-May-15 Discharge high flow brown 7.5 126 81 40 3-May-15 Discharge high flow brown 7.59 91 62 21 4-May-15 Discharge high flow brown 7.4 136 42 10 5-May-15 Discharge low flow brown 7.64 146 26 10 6-May-15 Discharge low flow brown 7.2 163 27 14 7-May-15 Discharge low flow brown 7.5 190 36 15 8-May-15 Discharge low flow brown 7.9 209 21 15 22-May-15 Discharge Event v high flow turbid brown 7.94 119 356 46 60 450 31 27 4 4 20 6 4 7.46 0.139 0.017 7.22 <1 27 <2 17 23-May-15 Discharge High flow 7.31 94 35 40 24-May-15 Discharge Mod flow light brown 7.5 119 22 12 25-May-15 Discharge Mod flow 7.23 159 31 6 26-May-15 Discharge Low flow light brown 7.32 147 24 <5 27-May-15 Discharge Nil observation 5.78 187 16 16 28-May-15 Discharge Mod flow turbid and brown 7.94 190 14 10 18-Jun-15 Discharge Event Low flow turbid brown 7.63 332 16 74 171 <5 79 55 6 11 56 15 10 0.42 0.047 0.015 1.19 <1 55 <2 38 Min 5.8 91 2.0 3 60 <5 <6 10.0 <1 <1 20.0 4.0 2.0 0.0 0.0 <0.005 0.3 10 3 15 Avg 7.6 219 39.2 34 158 29 58 48.5 5.3 11.4 51.3 10.7 7.7 1.4 0.2 0.0 2.0 48 5 35 Max 8.7 627 356.0 82 265 450 96 74.0 12.0 36.0 80.0 17.0 13.0 7.5 0.7 0.1 7.2 74 8 55 Var 0.2 7609 1932.1 1087 4906 4016 636 470.5 6.6 91.9 401.7 19.5 11.7 4.5 0.0 0.0 3.5 479 4 174 SD 0.5 87 44.0 33 70 63 25 21.7 2.6 9.6 20.0 4.4 3.4 2.1 0.2 0.0 1.9 22 2 13
ANZECC* 6.5-8.0 200-300 6-50 0.06 1.900 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Highnoon - Mammy Johnsons River
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 <0.001 0.04 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.08 0.4 0.02 27-Aug-14 0.001 0.050 <0.0001 <0.001 0.002 0.002 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.09 1.1 0.12 30-Sep-14 <0.001 0.040 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.04 0.4 0.09 31-Oct-14 <0.001 0.040 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.03 0.4 0.03 27-Nov-14 <0.001 0.040 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.33 0.8 0.03 9-Dec-14 0.007 0.110 0.0002 0.002 0.003 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 1.8 0.21 20-Jan-15 0.002 0.040 <0.0001 <0.001 0.08 0.004 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.17 <0.01 0.13 1.4 0.29 26-Feb-15 0.001 0.040 <0.0001 <0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.03 <0.01 0.06 0.7 0.08 23-Mar-15 0.001 0.040 <0.0001 <0.001 0.002 0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.26 1.1 0.09 22-Apr-15 <0.001 0.040 <0.0001 <0.001 0.005 0.002 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.27 1.1 0.08 22-May-15 0.002 0.09 <0.0001 0.004 0.004 0.004 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.09 2 0.33 18-Jun-15 <0.001 0.04 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.08 <0.01 0.06 0.4 0.11 Min <0.001 0.0 <0.001 <0.001 <0.001 <0.001 <0.1 <0.01 0.0 0.4 <0.01 Avg 0.0 0.1 0.003 0.014 0.003 0.002 0.1 0.1 0.1 1.0 0.1 Max 0.0 0.1 0.004 0.080 0.004 0.003 0.1 0.2 0.3 2.0 0.3 Var 0.0 0.0 0.000 0.001 0.000 0.000 0.0 0.0 0.3 0.0 SD 0.0 0.0 0.001 0.029 0.001 0.001 0.1 0.1 0.6 0.1
ANZECC* 0.013 0.0002 0.001 0.001 0.0034 0.011 0.01 5E-05 0.37 0.0006 0.90 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 9 - Karuah River (Near Stroud Road Village)
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb BOD Na (as CaCO ) (as (as (as uS/cm NTU % mg/l mg/l mg/l 3 mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l CaCO3) CaCO3) CaCO3) 30-Jul-14 Monthly Low flow 8.2 225 2.0 88 146 <5 56 58 5 6 40 11 7 0.17 0.01 <0.005 0.35 <1 58 <2 27 27-Aug-14 Discharge Event High flow 6.9 200 120.0 99 130 69 36 40 6 7 39 6 5 3.21 0.08 0.010 3.10 <1 40 3 24 11-Sep-14 Macro Mod flow 7.4 134 7 26 2 6 24 6 3 0.50 0.009 <0.005 0.53 <1 26 17 30-Sep-14 Monthly Mod flow 8.1 190 3.0 9 97 <5 40 41 2 6 30 8 5 0.17 0.012 <0.005 0.39 <1 41 <2 22 31-Oct-14 Monthly Mod flow 8.2 267 11.0 5 102 7 47 59 3 <10 43 9 6 0.13 0.028 <0.005 0.40 <1 59 <2 22 27-Nov-14 Monthly Low flow 7.7 264 4.0 4 172 <5 65 61 4 3 45 13 8 0.15 0.155 0.018 0.47 <1 61 <2 28 9-Dec-14 Discharge Event Mod flow 7.1 236 2.0 4 157 11 54 61 4 <1 35 10 7 0.42 0.033 0.006 1.04 <1 61 3 28 20-Jan-15 Discharge Event Fast flow 7.6 146 19.0 4 74 12 36 31 4 3 14 8 4 0.37 0.037 0.009 0.72 <1 31 3 34 26-Feb-15 Monthly Mod flow 7.0 132 15.0 6 67 <5 34 38 4 3 20 7 4 0.14 0.016 <0.005 0.50 <1 38 <2 15 23-Mar-15 Discharge Event Fast flow 7.4 124 62.0 79 63 15 18 25 3 <10 24 4 2 4.39 0.044 0.026 3.51 <1 25 4 11 22-Apr-15 Discharge Event v high flow 7.0 107 67.0 70 54 10 25 11 8 15 28 5 3 1.63 0.061 0.011 2.07 <1 11 5 19 v high flow turbid 22-May-15 Discharge Event brown 8.1 197 56 46 100 36 56 68 2 3 26 11 7 1.26 0.050 0.011 1.99 <1 68 <2 24 Mod flow turbid 18-Jun-15 Discharge Event brown 7.7 179 9 79 91 <5 40 38 3 4 25 8 5 0.21 0.010 <0.005 0.39 <1 38 3 18 Min 6.9 107 2.0 4 54 <5 11 2 3 14 4 2 0.13 0.01 <0.005 0.35 11 3 11 Avg 7.6 185 30.8 41 104 43 4 6 30 8 5 0.98 0.04 1.19 43 4 22 Max 8.2 267 120.0 99 172 69 68 8 15 45 13 8 4.39 0.16 0.026 3.51 68 5 34 Var 0.2 2861 1390.4 1542 1505 466 300 3 13 89 7 3 1.84 0.00 0.000 1.23 300 1 39 SD 0.5 53 37.3 39 39 22 17 2 4 9 3 2 1.36 0.04 0.007 1.11 17 1 6
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.9 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 9 - Karuah River (Near Stroud Road Village)
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 <0.001 0.019 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.19 0.5 0.05 27-Aug-14 <0.001 0.036 <0.0001 0.002 0.002 0.002 <0.001 0.002 <0.01 <0.001 <0.001 0.05 <0.0001 0.2 0.02 <0.01 0.09 1.2 0.18 11-Sep-14 <0.001 <0.1 <0.01 <0.01 0.05 0.4 0.02 30-Sep-14 0.001 0.022 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 0.3 0.07 31-Oct-14 <0.001 0.062 <0.0001 <0.001 <0.001 0.014 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.08 0.5 0.04 27-Nov-14 <0.001 0.033 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.15 <0.01 0.11 0.8 0.06 9-Dec-14 0.001 0.027 <0.0001 0.003 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.04 0.7 0.19 20-Jan-15 <0.001 0.018 <0.0001 <0.001 0.002 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.1 0.01 <0.01 0.20 0.7 0.12 26-Feb-15 <0.001 0.017 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.04 0.2 0.02 23-Mar-15 0.002 0.048 0.0001 0.002 0.004 0.002 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.24 2.1 0.48 22-Apr-15 0.001 0.037 <0.0001 0.002 0.002 0.001 <0.001 0.003 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.04 <0.01 0.07 1.7 0.43 22-May-15 <0.001 0.039 <0.0001 <0.001 0.003 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.2 <0.01 <0.01 0.08 0.7 0.1 18-Jun-15 <0.001 0.016 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 0.2 0.01 Min <0.001 0.016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 0.05 0.10 <0.01 0.02 0.2 <0.01 Avg 0.031 <0.001 <0.01 <0.001 <0.001 0.05 0.17 0.04 0.10 0.8 Max 0.002 0.062 0.003 0.004 0.014 <0.001 0.003 <0.01 <0.001 <0.001 0.05 0.20 0.15 0.24 2.1 0.48 Var 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.3 0.02 SD 0.014 0.001 0.001 0.006 0.001 0.04 0.07 0.6 0.15
ANZECC* 0.013 0.0002 0.001 0.0014 0.003 0.011 0.011 5E-05 0.37 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 11 - Mammy Johnsons - Downstream of High Noon
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity(as Acidity(as SO4 Cl Ca Mg Al Mn Zn Fe CO3(as Bicarb BOD Na
CaCO3) CaCO3) CaCO3) (as CaCO3) uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 4-Jan-11 Weekly Low flow 0.02 (low) 7.0 345 3 5 44 5 5 24 10 5 0.21 0.040 <0.005 0.53 10-Jan-11 Weekly Low flow 0.08m (low) 7.0 340 3 <5 70 <1 8 74 12 8 0.06 0.074 <0.005 0.86 17-Jan-11 Weekly Low flow 0.09m (low) 7.3 295 3 <5 54 <1 2 58 12 6 0.05 0.060 <0.005 0.97 24-Jan-11 Weekly Low flow 0.09m (low) 6.3 354 3 <5 56 5 5 66 12 7 0.12 0.108 0.009 1.22 17-Jul-14 Ecotox Low flow 8.1 395 5 <5 85 63 6 12 82 16 11 0.12 0.042 <0.005 0.66 <1 63 <2 44 30-Jul-14 Monthly Low flow 8.0 426 1 59 276 <5 89 73 6 16 83 16 12 0.06 0.043 0.006 0.43 <1 73 <2 53 27-Aug-14 Discharge Event High flow 6.8 246 103 94 160 72 40 30 6 16 54 8 5 2.56 0.181 0.016 2.96 <1 30 <2 33 11-Sep-14 Macro Mod flow 7.0 170 6 24 3 12 34 6 4 1.48 0.028 0.005 1.25 <1 24 25 30-Sep-14 Monthly Low flow RL 20 cm 7.8 259 9 9 133 <5 47 42 4 10 51 9 6 0.50 0.035 <0.005 1.21 <1 42 <2 33 31-Oct-14 Monthly not recorded 7.9 300 2 5 193 14 76 78 3 <10 78 14 10 0.06 0.110 <0.005 0.70 <1 78 <2 42 27-Nov-14 Monthly not recorded 7.7 361 4 4 230 <5 74 61 5 6 72 13 10 0.11 0.558 0.01 1.29 <1 61 <2 42 9-Dec-14 Discharge Event RL 0.05 Mod flow 7.3 399 16 3 241 <5 87 77 6 13 79 15 12 0.19 0.196 <0.005 1.13 <1 77 <2 57 20-Jan-15 Discharge Event RL 0.2 Slow flow 7.7 261 94 3 134 76 65 46 7 12 46 13 8 3.54 0.258 0.021 4.22 <1 46 <2 34 28-Jan-15 Ecotox RL 0.2 Steady flow 7.5 260 32 9 42 48 8 19 39 7 6 1.42 0.087 <0.005 2.44 <1 48 <2 33 26-Feb-15 Monthly Low flow 7.1 323 36 6 166 <5 76 70 6 6 53 14 10 0.10 0.210 0.005 1.28 <1 70 <2 39 23-Mar-15 Discharge Event RL 0.4 Mod flow 6.5 167 77 76 85 24 22 23 4 3 30 4 3 2.18 0.037 <0.005 2.20 <1 23 <2 16 22-Apr-15 Discharge Event RL 1.5 High flow 6.8 139 70 71 70 49 18 12 4 2 26 4 2 2.45 0.051 0.01 1.99 <1 12 <2 17 RL 1.4 V High flow turbid 22-May-15 Discharge Event brown 7.99 190 179 53 97 260 45 40 4 11 28 8 6 3.37 0.087 0.021 3.58 <1 40 6 22 18-Jun-15 Discharge Event Mod flow clear 7.66 325 12 75 167 <5 72 52 6 10 55 14 9 0.28 0.031 <0.005 1.04 <1 52 <2 37 Min 6.3 139.0 1.0 3.0 70 <5 <6 12 3.0 <1 24 4 2 0.1 0.028 <0.005 0.430 12 16 Avg 7.3 292.4 36.2 38.2 169 32 60 51 5.2 9 56 11 7 0.9 0.125 0.010 1.491 50 36 Max 8.1 426.0 179.0 94.0 276 76 89 78 8.0 19 83 16 12 3.5 0.558 0.021 4.220 78 57 Var 0.3 6964.7 2445.3 1296.7 4489 878 639 408 2.0 28 413 15 10 1.3 0.018 0.000 0.982 505 149 SD 0.5 83.5 49.5 36.0 67 30 25 20 1.4 5 20 4 3 1.1 0.133 0.006 0.991 22 12
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.900 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria Site 11 - Mammy Johnsons - Downstream of High Noon
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 17-Jul-14 <0.001 0.041 <0.0001 <0.001 0.002 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.04 <0.01 0.03 0.3 0.03 30-Jul-14 <0.001 0.04 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.09 0.3 0.06 27-Aug-14 0.001 2.56 <0.0001 0.001 0.002 0.002 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.11 1.1 0.14 11-Sep-14 <0.001 <0.1 <0.01 <0.01 0.19 0.9 0.04 30-Sep-14 0.002 0.038 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 0.3 0.07 31-Oct-14 <0.001 0.041 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 0.4 0.04 27-Nov-14 0.002 0.048 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.07 0.8 0.07 9-Dec-14 0.002 0.06 <0.0001 0.002 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 0.7 0.1 20-Jan-15 0.002 0.051 <0.0001 0.002 0.004 0.004 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.07 <0.01 0.18 1.5 0.38 28-Jan-15 0.002 <0.1 0.04 <0.01 0.08 1.3 0.18 26-Feb-15 0.001 0.041 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.04 0.6 0.1 23-Mar-15 <0.001 0.037 <0.0001 0.001 0.002 0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.21 1 0.09 22-Apr-15 <0.001 0.043 <0.0001 0.001 0.001 0.002 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.26 1.2 0.08 22-May-15 <0.001 0.064 <0.0001 0.002 0.017 0.003 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.09 1.7 0.47 18-Jun-15 <0.001 0.04 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.07 0.4 0.13 Min <0.001 0.037 <0.001 <0.001 <0.001 <0.001 <0.01 0.02 0.3 0.03 Avg 0.273 0.10 0.8 0.11
Max 0.002 2.560 0.002 0.004 0.004 0.002 0.07 0.26 1.5 0.38 Var 0.000 0.576 0.000 0.000 0.000 0.000 0.00 0.01 0.2 0.01 SD 0.001 0.759 0.001 0.001 0.001 0.001 0.02 0.08 0.4 0.09
ANZECC* 0.013 0.0002 0.001 0.001 0.003 0.011 0.011 5E-05 0.37 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 12 - Mammy Johnsons - Relton Property
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb COD BOD Na (as CaCO3) (as CaCO3) (as (as CaCO3)
uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l CaCO3) mg/l mg/l mg/l mg/l 30-Jul-14 Monthly Low flow 8.2 293 1.0 62 190 <5 56 50 4 8 56 11 7 0.07 0.05 0.017 0.64 <1 50 <2 35 27-Aug-14 Discharge Event High flow 7.0 166 115.0 99 107 100 29 23 6 11 40 5 4 3.01 0.109 0.023 2.99 <1 23 <2 24 11-Sep-14 Macro Mod flow 7.1 160 7 21 3 9 34 6 4 1.33 0.025 0.006 1.23 <1 21 25 30-Sep-14 Monthly Low flow 7.5 231 6.0 702 118 <5 47 39 3 8 47 9 6 0.28 0.033 <0.005 0.93 <1 39 3 32 31-Oct-14 Monthly Low flow 8.3 299 4.3 5 146 12 50 59 4 <10 54 10 6 0.06 0.161 0.006 0.62 <1 59 <2 30 27-Nov-14 Monthly Low flow 7.5 398 3.4 2 260 <5 89 86 8 3 72 19 10 0.11 5.02 0.008 3.48 <1 86 <2 42 9-Dec-14 Discharge Event Mod flow 7.3 304 96 2 225 44 56 53 10 5 58 11 7 1.66 0.947 0.024 3.24 <1 53 5 39 20-Jan-15 Discharge Event Steady flow 7.6 169 74 3 86 77 40 36 9 2 25 8 5 1.97 0.334 0.033 3.36 <1 36 6 22 26-Feb-15 Monthly Low flow 7.2 270 14 6 138 20 65 55 4 <1 43 13 8 0.18 0.838 0.007 1.57 <1 55 <2 32 23-Mar-15 Discharge Event Mod flow 6.9 147 54 81 75 13 22 17 4 <10 31 4 3 1.81 0.033 0.006 1.53 <1 17 4 16 22-Apr-15 Discharge Event High flow brown 6.8 143 55 59 73 37 22 12 4 3 27 4 3 2.10 0.07 0.016 1.65 <1 12 5 18 V High flow 22-May-15 Discharge Event brown turbid 7.9 93 237.0 54 47 298 21 17 5 <10 16 5 2 6.80 0.107 0.017 5.66 <1 17 <2 15 18-Jun-15 Discharge Event Mod flow clear 7.7 313 9.7 77 161 <5 68 50 6 9 57 14 8 0.20 0.029 <0.005 1.08 <1 50 <2 37 Min 6.8 93 1.0 2 47 <5 21 12 3 2 16 4 2 0.06 0.025 <0.005 0.62 12 15 Avg 7.5 230 55.8 96 136 47 40 5 6 43 9 6 1.51 0.597 2.15 40 28 Max 8.3 398 237.0 702 260 298 89 86 10 11 72 19 10 6.80 5.020 0.033 5.66 86 42 Var 0.2 8,072 4824.3 37712 4201 8,466 454 465 5 11 259 20 6 3.51 1.862 0.000 2.21 465 80 SD 0.5 90 69.5 194 65 92 21 22 2 3 16 4 2 1.87 1.365 0.009 1.49 22 9
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.9 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 12 - Mammy Johnsons - Relton Property
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 <0.001 0.032 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.06 <0.01 0.08 0.3 0.02 27-Aug-14 <0.001 0.051 <0.0001 <0.001 0.003 0.001 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.04 <0.01 0.12 1.4 0.13 11-Sep-14 <0.001 0.10 <0.01 <0.01 0.08 0.7 0.04 30-Sep-14 0.001 0.040 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.04 0.3 0.04 31-Oct-14 <0.001 0.041 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.05 0.6 0.04 27-Nov-14 0.003 0.172 <0.0001 <0.001 <0.001 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 1.2 0.25 9-Dec-14 0.003 0.085 <0.0001 0.002 0.003 0.001 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 1.2 0.18 20-Jan-15 0.002 0.052 <0.0001 0.001 0.004 0.002 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.2 <0.01 0.13 1.8 0.35 26-Feb-15 0.002 0.048 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.10 0.07 <0.01 0.04 0.8 0.15 23-Mar-15 <0.001 0.036 <0.0001 <0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.23 1 0.07 22-Apr-15 <0.001 0.049 <0.0001 <0.001 0.002 0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.04 <0.01 0.28 1.3 0.08
22-May-15 0.002 0.091 <0.0001 0.003 0.005 0.004 <0.001 0.002 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.09 1.7 0.25 18-Jun-15 <0.001 0.048 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 0.2 0.02 Min 0.001 0.032 0.001 0.001 0.001 0.001 0.10 0.01 0.02 0.2 <0.01 Avg 0.002 0.062 0.002 0.003 0.002 0.002 0.10 0.06 0.09 1.0 Max 0.003 0.172 0.003 0.005 0.004 0.002 0.10 0.20 0.28 1.8 0.35 Var 0.000 0.002 0.000 0.000 0.000 0.000 0.00 0.00 0.01 0.3 0.01 SD 0.001 0.039 0.001 0.001 0.001 0.000 0.00 0.06 0.08 0.5 0.11
ANZECC* 0.013 0.0002 0.001 0.0014 0.003 0.011 0.011 5E-05 0.37 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria Site 15 - Mammy Johnsons - Tereel
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb BOD Na (as CaCO3) (as (as CaCO3) (as
uS/cm NTU % mg/l mg/l mg/l mg/l CaCO3) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l CaCO3) mg/l mg/l 30-Jul-14 Monthly Low flow 8.2 212 2 57 138 <5 43 57 4 8 49 9 5 0.18 0.020 0.019 0.43 <1 57 <2 31 27-Aug-14 Discharge Event High flow 6.8 116 66 105 75 58 18 12 5 4 32 4 2 2.14 0.060 0.007 1.84 <1 12 <2 18 30-Sep-14 Monthly Mod flow 6.6 184 7 9 94 <5 31 25 2 8 38 6 4 0.25 0.019 <0.005 0.85 <1 25 <2 24 31-Oct-14 Monthly Low flow 8.2 274 3 4 133 <5 43 42 4 <10 51 9 5 0.08 0.088 <0.005 0.55 <1 42 <2 26 27-Nov-14 Monthly Low flow 7.3 565 4 1 393 <5 148 88 9 <1 124 33 16 0.03 1.150 0.009 2.50 <1 88 <2 50 9-Dec-14 Discharge Event Low flow 7.3 294 27 2 213 9 70 54 7 <10 59 15 8 0.76 0.529 0.007 2.08 <1 54 3 32 20-Jan-15 Discharge Event Slow flow 7.6 196 23 4 100 20 50 29 7 8 33 10 6 0.69 0.208 0.016 1.42 <1 29 3 24 26-Feb-15 Monthly Mod flow 6.7 200 20 6 101 <5 40 33 3 2 35 8 5 0.05 0.060 <0.005 0.71 <1 33 <2 25 23-Mar-15 Discharge Event Fast flow 7.7 153 42 91 78 <5 22 14 4 <10 34 4 3 1.59 0.026 0.006 1.05 <1 14 <2 16 22-Apr-15 Discharge Event Low flow 6.9 141 36 70 72 12 18 9 4 6 27 4 2 1.23 0.021 0.005 0.79 <1 9 <2 18 22-May-15 Discharge Event Mod flow light brown 7.7 177 19 69 90 22 40 27 2 6 35 8 5 0.6 0.020 <0.005 0.90 <1 27 3 23 18-Jun-15 Discharge Event Mod flow clear 7.9 210 5 78 107 <5 43 26 3 6 43 9 5 0.24 0.014 <0.005 0.68 <1 26 3 24 Min 6.6 116 2 1 72 9 18 9 2 2 27 4 2 0.03 0.01 0.01 0.43 9 3 16 Avg 7.4 227 21 41 133 24 47 35 5 6 47 10 6 0.65 0.18 0.01 1.15 35 3 26 Max 8.2 565 66 105 393 58 148 88 9 8 124 33 16 2.14 1.15 0.02 2.50 88 3 50 Var 0.3 13881 378 1629 8209 386 1223 512 5 5 679 63 14 0.46 0.11 0.00 0.44 512 0 81 SD 0.6 118 19 40 91 20 35 23 2 2 26 8 4 0.68 0.34 0.01 0.66 23 0 9
ANZECC* 6.5-8.0 200-300 6-50 0.055 1.9 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 15 - Mammy Johnsons - Tereel
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 <0.001 0.031 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.07 0.4 0.01 27-Aug-14 <0.001 0.036 <0.0001 <0.001 0.001 0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.19 1 0.08 30-Sep-14 <0.001 0.036 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 <0.01 0.2 0.02 31-Oct-14 <0.001 0.038 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.28 0.7 0.01 27-Nov-14 0.002 0.117 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.03 <0.01 0.03 0.6 0.04 9-Dec-14 0.002 0.075 <0.0001 0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 <0.01 0.7 0.05 20-Jan-15 0.001 0.042 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 0.04 0.7 0.04 26-Feb-15 <0.001 0.030 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 <0.01 0.5 0.02 23-Mar-15 <0.001 0.034 <0.0001 <0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.3 1 0.04 22-Apr-15 <0.001 0.030 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.23 0.8 0.03 22-May-15 <0.001 0.035 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.03 0.2 0.01 18-Jun-15 <0.001 0.033 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.02 0.1 <0.01 Min 0.001 0.030 0.001 0.01 0.02 0.1 0.01 Avg 0.002 0.045 0.001 0.02 0.13 0.6 0.03 Max 0.002 0.117 0.001 0.03 0.30 1.0 0.08 Var 0.000 0.001 0.000 0.00 0.01 0.1 0.00 SD 0.001 0.026 0.000 0.01 0.12 0.3 0.02
ANZECC* 0.013 0.0002 0.001 0.0014 0.0034 0.011 0.011 0.00005 0.37 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Site 19 - Karuah River (Washpool Turnoff)
Date Category Comment ph EC Turbidity DO TDS TSS Hardness Alkalinity Acidity SO4 Cl Ca Mg Al Mn Zn Fe CO3 Bicarb BOD Na
(as CaCO3) (as CaCO3) (as CaCO3) (as CaCO3) uS/cm NTU % mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 Monthly Low flow 8.5 260 1 95 169 <5 59 63 3 7 44 12 7 0.10 0.013 <0.005 0.25 <1 63 <2 31 27-Aug-14 Discharge Event High flow 7.1 236 100 88 153 84 45 36 6 15 50 8 6 3.26 0.140 0.008 3.55 <1 36 <2 30-Sep-14 Monthly Low-mod flow 8.28 221 5 9 113 <5 40 47 2 6 34 8 5 0.31 0.019 <0.005 0.64 <1 47 4 25 31-Oct-14 Monthly Low-mod flow 8.59 282 3 7 132 12 50 63 2 <10 47 10 6 0.06 0.040 <0.005 0.41 <1 63 <2 25 27-Nov-14 Monthly Low-mod flow 8.51 272 3 5 154 7 65 64 3 4 48 13 8 0.07 0.096 0.018 0.37 <1 64 <2 30 09-Dec-14 Discharge Event Mod flow 7.07 305 8 4 177 <5 60 68 5 3 44 11 8 0.36 0.108 0.007 1.00 <1 68 <2 33 20-Jan-15 Discharge Event Steady flow 7.3 179 17 6 91 7 43 38 4 4 18 9 5 0.15 0.059 0.024 0.57 <1 38 <2 18 26-Feb-15 Monthly Mod flow 7.49 154 11.0 7 78 7 36 40 3 3 20 8 4 0.12 0.022 <0.005 0.52 <1 40 <2 16 23-Mar-15 Discharge Event Fast flow 7.2 241 83.0 74 123 21 25 28 3 <1 28 5 3 2.63 0.043 0.010 2.49 <1 28 <2 15 22-Apr-15 Discharge Event V Fast flow 7.74 142 74.0 74 72 74 25 15 4 <1 26 5 3 2.12 0.043 0.010 2.04 <1 15 <2 19 22-May-15 Discharge Event V Fast flow 8.02 236 69 69 121 72 56 48 3 8 37 11 7 1.92 0.071 0.007 2.22 <1 48 3 28 Mod flow turbid 18-Jun-15 Discharge Event brown 7.7 259 44 78 133 11 38 26 4 <10 29 7 5 0.69 0.021 0.006 0.83 <1 26 <2 19 Min 7.1 142.0 1.0 4.0 72 7 25 15 2 3 18 5 3 0.06 0.013 <0.005 0.25 15 4 15 Avg 7.8 232.3 34.8 43.0 126 30 45 46 4 6 36 9 6 0.92 0.058 0.013 1.18 46 4 24 Max 8.6 305.0 100.0 95.0 177 84 65 68 6 15 50 13 8 3.26 0.140 0.024 3.55 68 4 33 Var 0.3 2560.8 1365.4 1512.2 1402 1141 195 319 2 18 149 7 3 1.54 0.002 0.000 1.26 319 47 SD 0.6 50.6 37.0 38.9 37 34 14 18 1 4 12 3 2 1.24 0.043 0.007 1.12 18 7 ANZECC* 6.5-8.0 200-300 6-50 0.06 1.900 0.008 ID ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria Site 19 - Karuah River (Washpool Turnoff)
Date As Ba Cd Cr Cu Pb Mo Ni Se Ag U B Hg F NH3 NO2 NO3 N P (as N) (as N) (as N) mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l 30-Jul-14 <0.001 0.021 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.11 0.2 0.01 27-Aug-14 <0.001 0.046 <0.0001 0.002 0.002 0.002 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.15 1.2 0.12 30-Sep-14 0.001 0.024 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.01 <0.01 <0.01 0.4 0.07 31-Oct-14 0.002 0.022 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.04 0.4 0.04 27-Nov-14 <0.001 0.031 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.06 <0.01 0.08 0.7 0.05 9-Dec-14 0.002 0.034 <0.0001 0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 0.10 0.04 <0.01 0.05 0.8 0.12 20-Jan-15 <0.001 0.020 <0.0001 <0.001 0.007 <0.001 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.09 0.6 0.08 26-Feb-15 <0.001 0.018 <0.0001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.05 0.4 0.05 23-Mar-15 0.001 0.033 <0.0001 0.002 0.002 0.002 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.18 1 0.09 22-Apr-15 <0.001 0.027 <0.0001 <0.001 0.002 0.002 <0.001 0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.05 <0.01 0.19 1.4 0.14 22-May-15 <0.001 0.044 <0.0001 <0.001 0.001 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 0.02 <0.01 0.09 0.9 0.14
18-Jun-15 <0.001 0.024 <0.0001 <0.001 0.002 <0.001 <0.001 <0.001 <0.01 <0.001 <0.001 <0.05 <0.0001 <0.1 <0.01 <0.01 0.17 1.2 0.09 Min <0.001 0.018 0.001 0.001 0.002 0.001 0.10 0.01 0.04 0.2 0.01 Avg 0.002 0.028 0.002 0.003 0.002 0.001 0.10 0.04 0.10 0.7 0.08 Max 0.002 0.046 0.002 0.007 0.002 0.001 0.10 0.06 0.19 1.4 0.14 Var 0.000 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.2 0.00 SD 0.001 0.009 0.001 0.002 0.000 0.000 0.02 0.06 0.4 0.04 ANZECC* 0.013 0.000 0.001 0.001 0.003 0.011 0.011 0.0001 0.37 0.0006 0.9 ID: Insufficient Data *: ANZECC Guidelines for Fresh & Marine Water Quality 2000 (Aquatic Ecosystems) - slightly to moderately disturbed ecosystems. Bolded indicates exceedance of ANZECC criteria
Duralie Surface Water Monitoring - pH July 2014 to June 2015 10.0
9.0
8.0 pH 7.0
6.0
5.0 Jun-14 Jul-14 Sep-14 Nov-14 Dec-14 Feb-15 Apr-15 May-15 Jul-15
SW2 - DCPL (CSC) SW2 RC - Rail Culvert DCPL (CSC) SW6 - DCPL SW9 - Fisher Webster (UNT) SW10 - DCPL (CSC) GB1 - DCPL (MJR) Highnoon - (MJR) Site 9 - Stroud Road Bridge (KR) Site 11 - Schultz (MJR) Site 12 -Relton (MJR) Site 15 -Tereel (MJR) Site 19 - Washpool Bridge (KR) North Drain South Drain
Duralie Surface Water Monitoring - EC (µS/cm) July 2014 to June 2015 2000 1800 1600 1400 1200 1000 800 600 400 200 0
SW1 - Schultz (KR) SW2 - DCPL (CSC) SW2 RC - Rail Culvert DCPL (CSC) SW6 - DCPL SW9 - Fisher Webster (UNT) SW10 - DCPL (CSC) GB1 - DCPL (MJR) Highnoon - (MJR) Site 9 - Stroud Road Bridge (KR) Site 11 - Schultz (MJR) Site 12 -Relton (MJR) Site 15 -Tereel (MJR)
Duralie Surface Water Monitoring - TSS (mg/L) July 2014 to June 2015 500
400
300
200
100
0
SW2 - DCPL (CSC) SW2 RC - Rail Culvert DCPL (CSC) SW6 - DCPL SW9 - Fisher Webster (UNT) SW10 - DCPL (CSC) GB1 - DCPL (MJR) Highnoon - (MJR) Site 9 - Stroud Road Bridge (KR) Site 11 - Schultz (MJR) Site 12 -Relton (MJR) Site 15 -Tereel (MJR) Site 19 - Washpool Bridge (KR)
Groundwater
DB1W
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 15.80 16.00 15.90 15.50 15.5 15.80 16.00 0.05 0.22 pH 6.2 5.9 6.1 6.3 5.9 6.13 6.30 0.03 0.17 Conductivity @ 250C (µS/cm) 3850 4660 4500 3700 3700 4178 4660 224025 473 ORP (mV) -60 25 -10 -20 -60.0 -16.25 25.00 1223 35 Dissolved Oxygen (%) 30 28 22 43 22 31 43 78 9 TDS (mg/L) 2420 3010 3160 2640 2420.0 2807.50 3160.00 114492 338 Alkalinity as CaCO3 (mg/L) 114 157 142 133 114 137 157 323 18 Acidity as CaCO3 (mg/L) 110 169 162 169 110.0 152.50 169.00 814 29 Sulphate (mg/L) 363 373 378 356 356 368 378 98 10 Chloride (mg/L) 1040 1260 1160 1190 1040.0 1162.50 1260.00 8425 92 Calcium (mg/L) 232 268 339 283 232 281 339 1979 44 Magnesium (mg/L) 62 63 79 65 62.0 67.25 79.00 63 8 Sodium (mg/L) 452 552 545 507 452 514 552 2099 46 Aluminium (mg/L) 0.64 1.28 0.28 3.98 0.3 1.55 3.98 2.81 1.68 Manganese (mg/L) 1.000 1.100 1.100 1.000 1 1 1 0.003 0.058 Zinc (mg/L) 0.090 0.050 0.040 0.120 0.0 0.08 0.12 0.001 0.037 Iron (mg/L) 33.90 33.10 36.20 33.10 33.1 34.08 36.20 2.15 1.47
DB2W
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 14.85 15.10 14.83 14.75 14.8 14.88 15.10 0.02 0.15 pH 6.7 6.2 6.5 6.6 6.2 6.50 6.72 0.04 0.20 Conductivity @ 250C (µS/cm) 1263 1256 1368 1199 1199.0 1271.50 1368.00 4960.33 70.43 ORP (mV) -75 -33 -24 2 -75.0 -32.50 2.00 1023.00 31.98 Dissolved Oxygen (%) 40 32 33 47 32.0 38.00 47.00 48.67 6.98 TDS (mg/L) 778 830 824 773 773.0 801.25 830.00 894.25 29.90 Alkalinity as CaCO3 (mg/L) 176 140 169 179 140.0 166.00 179.00 318.00 17.83 Acidity as CaCO3 (mg/L) 70 126 126 94 70.0 104.00 126.00 741.33 27.23 Sulphate (mg/L) 166 160 169 164 160.0 164.75 169.00 14.25 3.77 Chloride (mg/L) 228 237 236 236 228.0 234.25 237.00 17.58 4.19 Calcium (mg/L) 88 88 96 107 88.0 94.75 107.00 80.92 9.00 Magnesium (mg/L) 23 22 27 25 22.0 24.25 27.00 4.92 2.22 Sodium (mg/L) 125 141 141 141 125.0 137.00 141.00 64.00 8.00 Aluminium (mg/L) <0.01 0.02 <0.01 0.08 0.0 0.05 0.08 0.00 0.04 Manganese (mg/L) 0.940 0.900 0.860 0.830 0.8 0.88 0.94 0.00 0.05 Zinc (mg/L) 0.030 0.010 0.010 0.010 0.0 0.02 0.03 0.00 0.01 Iron (mg/L) 15.0 13.9 14.2 13.2 13.2 14.08 15.00 0.56 0.75
DB3W
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 3.20 3.40 3.30 2.56 2.6 3.12 3.40 0.14 0.38 pH 7.0 6.7 7.4 6.5 6.5 6.90 7.40 0.15 0.39 Conductivity @ 250C (µS/cm) 80 271 256 106 80 178 271 9840 99 ORP (mV) 35 19 -7 -9 -9 10 35 452 21 Dissolved Oxygen (%) 60 66 22 53 22 50 66 383 20 TDS (mg/L) 524 444 315 142 142 356 524 27815 167 Alkalinity as CaCO3 (mg/L) 36 35 41 43 35 39 43 15 4 Acidity as CaCO3 (mg/L) 16 32 33 19 16 25 33 77 9 Sulphate (mg/L) 10 5 8 4 4 7 10 8 3 Chloride (mg/L) 13 22 21 12 12 17 22 27 5 Calcium (mg/L) <1 6 5 3 3 5 6 2 2 Magnesium (mg/L) <1 5 5 2 2 4 5 3 2 Sodium (mg/L) 26 25 24 21 21 24 26 5 2 Aluminium (mg/L) 72 24 36 2 2 34 72 857 29 Manganese (mg/L) 0.380 0.210 0.230 0.040 0.040 0.215 0.380 0.019 0.139 Zinc (mg/L) 0.230 0.110 0.100 0.020 0.020 0.115 0.230 0.008 0.087 Iron (mg/L) 72.9 27.7 40.1 1.7 1.7 35.6 72.9 874.4 29.6 DB4W
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 7.43 7.50 7.30 7.70 7.3 7.48 7.70 0.03 0.17 pH 6.4 6.6 6.0 6.4 6.0 6.35 6.60 0.06 0.25 Conductivity @ 250C (µS/cm) 3840 4330 4240 3930 3840 4085 4330 56033 237 ORP (mV) -80 -45 -109 133 -109 -25 133 11815 109 Dissolved Oxygen (%) 35 36 55 42 35 42 55 85 9 TDS (mg/L) 2370 2660 2220 2510 2220 2440 2660 35533 189 Alkalinity as CaCO3 (mg/L) 226 164 190 205 164 196 226 680 26 Acidity as CaCO3 (mg/L) 69 107 110 68 68 89 110 535 23 Sulphate (mg/L) 274 306 308 291 274 295 308 249 16 Chloride (mg/L) 1100 1180 1050 1190 1050 1130 1190 4467 67 Calcium (mg/L) 197 187 186 187 186 189 197 27 5 Magnesium (mg/L) 105 108 122 112 105 112 122 55 7 Sodium (mg/L) 537 563 539 533 533 543 563 184 14 Aluminium (mg/L) 0.03 0.02 0.02 0.03 0.02 0.03 0.03 0.00 0.01 Manganese (mg/L) 2.000 2.100 2.200 1.900 1.900 2.050 2.200 0.017 0.129 Zinc (mg/L) 0.010 <0.005 <0.005 <0.005 0.010 0.010 0.010 #DIV/0! #DIV/0! Iron (mg/L) 5.60 7.50 8.40 7.40 5.6 7.23 8.40 1.38 1.17
DB5W
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 11.82 12.07 11.82 11.57 11.6 11.82 12.07 0.04 0.20 pH 5.8 6.0 6.6 6.0 5.8 6.10 6.60 0.12 0.35 Conductivity @ 250C (µS/cm) 2740 2520 2440 2110 2110 2453 2740 68225 261 ORP (mV) 21 57 61 -34 -34 26 61 1937 44 Dissolved Oxygen (%) 30 52 33 40 30 39 52 96 10 TDS (mg/L) 1580 1610 1540 1220 1220 1488 1610 32625 181 Alkalinity as CaCO3 (mg/L) 41 40 46 44 40 43 46 8 3 Acidity as CaCO3 (mg/L) 195 220 187 161 161 191 220 591 24 Sulphate (mg/L) 300 260 229 205 205 249 300 1686 41 Chloride (mg/L) 735 727 606 609 606 669 735 5096 71 Calcium (mg/L) 41 38 35 34 34 37 41 10 3 Magnesium (mg/L) 52 44 44 37 37 44 52 38 6 Sodium (mg/L) 415 404 359 332 332 378 415 1507 39 Aluminium (mg/L) 0.06 0.07 0.02 0.67 0.02 0.21 0.67 0.10 0.31 Manganese (mg/L) 1.600 1.500 1.300 1.100 1.100 1.375 1.600 0.049 0.222 Zinc (mg/L) 0.120 0.042 0.037 0.104 0.037 0.076 0.120 0.002 0.042 Iron (mg/L) 70.3 62.3 59.0 45.9 45.9 59.4 70.3 103.2 10.2
DB6W
Parameter Units 3-Oct-14 2-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 23.17 23.10 22.90 22.70 22.7 22.97 23.17 0.04 0.21 pH 6.8 7.0 6.4 6.9 6.4 6.78 7.00 0.07 0.26 Conductivity @ 250C (µS/cm) 5850 6260 5950 5670 5670 5933 6260 61092 247 ORP (mV) -40 -10 -70 -21 -70 -35 -10 690 26 Dissolved Oxygen (%) 31 23 55 36 23 36 55 185 14 TDS (mg/L) 3440 4200 5030 4100 3440 4193 5030 425425 652 Alkalinity as CaCO3 (mg/L) 640 539 634 677 539 623 677 3460 59 Acidity as CaCO3 (mg/L) 87 178 170 123 87 140 178 1814 43 Sulphate (mg/L) 100 91 92 96 91 95 100 17 4 Chloride (mg/L) 1820 1800 1670 1740 1670 1758 1820 4558 68 Calcium (mg/L) 274 314 384 319 274 323 384 2073 46 Magnesium (mg/L) 236 208 253 222 208 230 253 371 19 Sodium (mg/L) 630 649 669 685 630 658 685 572 24 Aluminium (mg/L) 1.4 0.22 1.37 0.02 0.02 0.75 1.40 0.54 0.74 Manganese (mg/L) 0.327 0.332 0.407 0.306 0.306 0.343 0.407 0.002 0.044 Zinc (mg/L) 0.010 <0.005 0.011 <0.005 0.010 0.011 0.011 0.000 0.001 Iron (mg/L) 4.60 4.10 5.70 3.50 3.50 4.48 5.70 0.87 0.93
DB7W
Parameter Units 3-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 10.57 10.87 10.70 8.95 9.0 10.27 10.87 0.79 0.89 pH 7.2 7.0 6.5 7.1 6.5 6.95 7.20 0.10 0.31 Conductivity @ 250C (µS/cm) 2630 2810 2760 2660 2630.0 2715.00 2810.00 7100.00 84.26 ORP (mV) -137 -84 -170 -166 -170.0 -139.25 -84.00 1572.92 39.66 Dissolved Oxygen (%) 48 40 22 31 22.0 35.25 48.00 126.25 11.24 TDS (mg/L) 1430 1560 1680 1590 1430.0 1565.00 1680.00 10700.00 103.44 Alkalinity as CaCO3 (mg/L) 409 404 407 414 404.0 408.50 414.00 17.67 4.20 Acidity as CaCO3 (mg/L) 12 57 62 55 12.0 46.50 62.00 537.67 23.19 Sulphate (mg/L) 102 95 98 116 95.0 102.75 116.00 86.25 9.29 Chloride (mg/L) 653 677 629 708 629.0 666.75 708.00 1140.25 33.77 Calcium (mg/L) 142 132 148 161 132.0 145.75 161.00 146.92 12.12 Magnesium (mg/L) 55 48 62 61 48.0 56.50 62.00 41.67 6.45 Sodium (mg/L) 397 342 381 397 342.0 379.25 397.00 673.58 25.95 Aluminium (mg/L) 1.20 0.40 0.50 2.00 0.4 1.03 2.00 0.55 0.74 Manganese (mg/L) 0.686 0.709 0.713 0.650 0.7 0.69 0.71 0.00 0.03 Zinc (mg/L) 0.015 <0.005 0.009 0.029 0.0 0.02 0.03 0.00 0.01 Iron (mg/L) 0.90 0.44 0.52 1.93 0.44 0.95 1.93 0.47 0.69
DB8W
Parameter Units 3-Oct-14 3-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 22.83 22.48 22.20 21.96 23.2 23.82 24.51 0.29 0.54
DB9W
Parameter Units 3-Oct-14 3-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 21.84 21.84 21.2 21.2 21.63 21.84 0.14 0.37 pH 7.2 6.8 7.2 6.8 7.07 7.19 0.04 0.20 Conductivity @ 250C (µS/cm) 3030 3220 2410 2410.0 2886.67 3220.00 179433.33 423.60 ORP (mV) -10 16 -49 -49.0 -14.33 16.00 1070.33 32.72 Dissolved Oxygen (%) 38 55 66 38.0 53.00 66.00 199.00 14.11 TDS (mg/L) 1820 1800 1900 1800.0 1840.00 1900.00 2800.00 52.92 Alkalinity as CaCO3 (mg/L) 138 118 117 117.0 124.33 138.00 140.33 11.85 Acidity as CaCO3 (mg/L) 5 9 10 5.0 8.00 10.00 7.00 2.65 Sulphate (mg/L) 304 236 248 236.0 262.67 304.00 1317.33 36.30 Chloride (mg/L) 831 823 748 748.0 800.67 831.00 2096.33 45.79 Calcium (mg/L) 170 140 135 135.0 148.33 170.00 358.33 18.93
Magnesium (mg/L) 16 12 14 wetNotooaccess - 12.0 14.00 16.00 4.00 2.00 Sodium (mg/L) 510 500 490 490.0 500.00 510.00 100.00 10.00 Aluminium (mg/L) 0.13 0.05 0.16 0.1 0.11 0.16 0.00 0.06 Manganese (mg/L) 0.125 0.229 0.271 0.1 0.21 0.27 0.01 0.08 Zinc (mg/L) 0.020 0.016 0.012 0.0 0.02 0.02 0.00 0.00 Iron (mg/L) 0.43 0.45 1.86 0.4 0.91 1.86 0.67 0.82 DB10W
Parameter Units 3-Oct-14 3-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 15.13 15.4 14.83 14.8 15.12 15.40 0.08 0.29 pH 5.75 5.66 5.99 5.7 5.80 5.99 0.03 0.17 Conductivity @ 250C (µS/cm) 3490 3840 3440 3440.0 3590.00 3840.00 47500.00 217.94 ORP (mV) -79 92 -47 -79.0 -11.33 92.00 8264.33 90.91 Dissolved Oxygen (%) 60 25 46 25.0 43.67 60.00 310.33 17.62 TDS (mg/L) 1940 2170 2290 1940.0 2133.33 2290.00 31633.33 177.86 Alkalinity as CaCO3 (mg/L) 10 14 27 10.0 17.00 27.00 79.00 8.89 Acidity as CaCO3 (mg/L) 62 184 163 62.0 136.33 184.00 4254.33 65.23 Sulphate (mg/L) 423 425 425 423.0 424.33 425.00 1.33 1.15 Chloride (mg/L) 922 981 884 884.0 929.00 981.00 2389.00 48.88 Calcium (mg/L) 73 69 61 61.0 67.67 73.00 37.33 6.11
Magnesium (mg/L) 74 71 73 wetNotooaccess - 71.0 72.67 74.00 2.33 1.53 Sodium (mg/L) 594 631 600 594.0 608.33 631.00 394.33 19.86 Aluminium (mg/L) 8.20 0.27 0.19 0.2 2.89 8.20 21.18 4.60 Manganese (mg/L) 0.792 0.766 0.666 0.7 0.74 0.79 0.00 0.07 Zinc (mg/L) 0.152 0.108 0.104 0.1 0.12 0.15 0.00 0.03 Iron (mg/L) 18.8 11.1 12.7 11.1 14.20 18.80 16.51 4.06
DB11W Note: Installed 3-Sep-13. E - 399100, N - 6430300
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (TOC) (m) 10.42 10.8 10.65 10.4 10.62 10.80 0.04 0.19 pH 7.69 6.7 7.9 6.7 7.43 7.90 0.41 0.64 Conductivity @ 250C (µS/cm) 2420 2180 2710 2180 2437 2710 70433 265 ORP (mV) -94 -30 -107 -107 -77 -30 1699 41 Dissolved Oxygen (%) 40 50 46 40 45 50 25 5 TDS (mg/L) 1380 3330 1770 1380 2160 3330 1064700 1032 Alkalinity as CaCO3 (mg/L) 299 241 289 241 276 299 961 31 Acidity as CaCO3 (mg/L) 9 63 30 9 34 63 741 27 Sulphate (mg/L) 184 287 171 171 214 287 4039 64 Chloride (mg/L) 589 1330 646 589 855 1330 170031 412 Calcium (mg/L) 187 410 173 173 257 410 17682 133
Magnesium (mg/L) 23 84 27 wetNotooaccess - 23 45 84 1164 34 Sodium (mg/L) 385 532 361 361 426 532 8571 93 Aluminium (mg/L) 0.18 0.14 0.11 0.11 0.14 0.18 0.00 0.04 Manganese (mg/L) 0.542 2.130 0.612 0.542 1.095 2.130 0.805 0.897 Zinc (mg/L) 0.017 <0.005 0.026 0.017 0.022 0.026 0.000 0.006 Iron (mg/L) 1.53 6.86 1.99 1.53 3.46 6.86 8.72 2.95
BH4BW
Parameter Units 1-Oct-14 2-Dec-14 23-Feb-15 20-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 4.80 5.00 4.90 4.48 4.5 4.80 5.00 0.05 0.23 pH 6.7 6.5 6.2 6.3 6.2 6.43 6.70 0.05 0.22 Conductivity @ 250C (µS/cm) 251 261 251 215 215.0 244.50 261.00 409.00 20.22 ORP (mV) 11 66 75 71 11.0 55.75 75.00 903.58 30.06 Dissolved Oxygen (%) 50 35 40 39 35.0 41.00 50.00 40.67 6.38 TDS (mg/L) 362 214 204 174 174.0 238.50 362.00 7067.67 84.07 Alkalinity as CaCO3 (mg/L) 104 108 101 78 78.0 97.75 108.00 181.58 13.48 Acidity as CaCO3 (mg/L) 32 67 63 53 32.0 53.75 67.00 244.92 15.65 Sulphate (mg/L) 10 8 7 7 7.0 8.00 10.00 2.00 1.41 Chloride (mg/L) 25 17 24 29 17.0 23.75 29.00 24.92 4.99 Calcium (mg/L) 14 16 17 13 13.0 15.00 17.00 3.33 1.83 Magnesium (mg/L) 10 12 14 9 9.0 11.25 14.00 4.92 2.22 Sodium (mg/L) 29 26 25 26 25.0 26.50 29.00 3.00 1.73 Aluminium (mg/L) 51.0 8.0 13.0 6.0 6.0 19.50 51.00 449.67 21.21 Manganese (mg/L) 1.60 0.80 2.00 0.70 0.7 1.28 2.00 0.40 0.63 Zinc (mg/L) 0.185 0.048 0.057 0.034 0.0 0.08 0.19 0.00 0.07 Iron (mg/L) 38.5 10.8 15.7 12.4 10.8 19.35 38.50 167.15 12.93 SI1W
Parameter Units 1-Oct-14 2-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 9.23 9.38 9.46 9.50 9.2 9.39 9.50 0.01 0.12 pH 7.3 7.3 7.4 7.1 7.1 7.28 7.40 0.02 0.13 Conductivity @ 250C (µS/cm) 2450 2620 2540 2490 2450.0 2525.00 2620.00 5366.67 73.26 ORP (mV) 6 -6 3 39 -6.0 10.50 39.00 387.00 19.67 Dissolved Oxygen (%) 45 30 60 54 30.0 47.25 60.00 170.25 13.05 TDS (mg/L) 1680 1810 1870 1740 1680.0 1775.00 1870.00 6833.33 82.66 Alkalinity as CaCO3 (mg/L) 479 473 458 504 458.0 478.50 504.00 367.00 19.16 Acidity as CaCO3 (mg/L) 18 56 51 47 18.0 43.00 56.00 291.33 17.07 Sulphate (mg/L) 717 658 685 722 658.0 695.50 722.00 893.67 29.89 Chloride (mg/L) 283 299 277 306 277.0 291.25 306.00 182.92 13.52 Calcium (mg/L) 158 166 150 179 150.0 163.25 179.00 152.92 12.37 Magnesium (mg/L) 150 139 144 158 139.0 147.75 158.00 66.92 8.18 Sodium (mg/L) 232 236 237 251 232.0 239.00 251.00 68.67 8.29 Aluminium (mg/L) 0.02 0.09 0.35 0.01 0.0 0.12 0.35 0.03 0.16 Manganese (mg/L) 0.002 0.008 0.015 0.001 0.0 0.01 0.02 0.00 0.01 Zinc (mg/L) 0.010 0.017 0.017 0.013 0.0 0.01 0.02 0.00 0.00 Iron (mg/L) <0.05 0.18 0.34 <0.05 0.2 0.26 0.34 0.01 0.11
SI2W
Parameter Units 1-Oct-14 2-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 17.03 17.75 18.27 18.07 17.0 17.78 18.27 0.30 0.54 pH 7.4 7.5 7.5 7.6 7.4 7.50 7.60 0.01 0.08 Conductivity @ 250C (µS/cm) 2910 3140 2990 2430 2430.0 2867.50 3140.00 94158.33 306.85 ORP (mV) 54 48 -5 -49 -49.0 12.00 54.00 2356.67 48.55 Dissolved Oxygen (%) 25 20 60 62 20.0 41.75 62.00 498.92 22.34 TDS (mg/L) 2120 2330 2290 1630 1630.0 2092.50 2330.00 103358.33 321.49 Alkalinity as CaCO3 (mg/L) 430 422 396 355 355.0 400.75 430.00 1140.92 33.78 Acidity as CaCO3 (mg/L) 12 41 32 31 12.0 29.00 41.00 148.67 12.19 Sulphate (mg/L) 1040 1100 1060 831 831.0 1007.75 1100.00 14506.92 120.44 Chloride (mg/L) 258 261 245 202 202.0 241.50 261.00 741.67 27.23 Calcium (mg/L) 178 155 144 120 120.0 149.25 178.00 580.92 24.10 Magnesium (mg/L) 177 167 179 140 140.0 165.75 179.00 322.25 17.95 Sodium (mg/L) 368 385 356 297 297.0 351.50 385.00 1461.67 38.23 Aluminium (mg/L) 0.04 0.02 0.25 0.39 0.0 0.18 0.39 0.03 0.18 Manganese (mg/L) 0.030 0.013 0.045 0.020 0.0 0.03 0.05 0.00 0.01 Zinc (mg/L) <0.005 <0.005 0.025 0.021 0.0 0.02 0.03 0.00 0.00 Iron (mg/L) 0.11 <0.05 0.36 0.45 0.1 0.31 0.45 0.03 0.18
SI3W
Parameter Units 1-Oct-14 2-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (m) 27.80 28.06 27.99 27.80 27.8 27.91 28.06 0.02 0.13 pH 7.2 6.9 7.0 7.0 6.9 7.03 7.20 0.02 0.13 Conductivity @ 250C (µS/cm) 6720 7440 4180 5120 4180 5865 7440 2201967 1484 ORP (mV) 53 76 -92 -140 -140.0 -25.75 76.00 11332.25 106.45 Dissolved Oxygen (%) 48 50 60 42 42 50 60 56 7 TDS (mg/L) 5030 5480 5540 3540 3540.0 4897.50 5540.00 870825.00 933.18 Alkalinity as CaCO3 (mg/L) 430 423 440 425 423 430 440 58 8 Acidity as CaCO3 (mg/L) 33 73 64 54 33.0 56.00 73.00 295.33 17.19 Sulphate (mg/L) 797 785 719 615 615 729 797 6952 83 Chloride (mg/L) 2040 2060 1670 1460 1460.0 1807.50 2060.00 85825.00 292.96 Calcium (mg/L) 543 566 536 401 401 512 566 5591 75 Magnesium (mg/L) 171 165 164 125 125.0 156.25 171.00 443.58 21.06 Sodium (mg/L) 785 894 813 708 708 800 894 5898 77 Aluminium (mg/L) 0.12 0.11 0.28 0.44 0.1 0.24 0.44 0.02 0.16 Manganese (mg/L) 0.008 0.020 1.240 1.220 0 1 1 0 1 Zinc (mg/L) 0.032 0.029 0.036 0.028 0.0 0.03 0.04 0.00 0.00 Iron (mg/L) 0.09 0.1 0.36 0.51 0.09 0.27 0.51 0.04 0.21 WR1 Note: Installed 3-Sep-13. E - 400776, N - 6425804 Waste Emplacement - South Parameter Units 3-Oct-14 4-Dec-14 11-Mar-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (TOC) (m) 14.53 15.19 14.45 14.5 14.72 15.19 0.16 0.41 pH 6.37 6.33 6.5 6.3 6.40 6.50 0.01 0.09 Conductivity @ 250C (µS/cm) 2390 2680 2330 2330.0 2466.67 2680.00 35033.33 187.17 ORP (mV) -19 59 -14 -19.0 8.67 59.00 1906.33 43.66 Dissolved Oxygen (%) 22 32 40 22.0 31.33 40.00 81.33 9.02 TDS (mg/L) 1620 1720 1360 1360.0 1566.67 1720.00 34533.33 185.83 Alkalinity as CaCO3 (mg/L) 237 235 227 227.0 233.00 237.00 28.00 5.29 Acidity as CaCO3 (mg/L) 78 157 116 78.0 117.00 157.00 1561.00 39.51 Sulphate (mg/L) 744 759 601 601.0 701.33 759.00 7606.33 87.21 Chloride (mg/L) 345 409 256 256.0 336.67 409.00 5904.33 76.84 Calcium (mg/L) 203 253 158 158.0 204.67 253.00 2258.33 47.52
Magnesium (mg/L) 43 48 37 wettooNo - Access 37.0 42.67 48.00 30.33 5.51 Sodium (mg/L) 314 430 307 307.0 350.33 430.00 4772.33 69.08 Aluminium (mg/L) 21.30 15.50 16.40 15.5 17.73 21.30 9.74 3.12 Manganese (mg/L) 0.888 1.110 0.622 0.6 0.87 1.11 0.06 0.24 Zinc (mg/L) 0.048 0.038 0.048 0.0 0.04 0.05 0.00 0.01 Iron (mg/L) 9.55 7.57 7.35 7.4 8.16 9.55 1.47 1.21
WR2 Note: Installed 3-Sep-13. E - 400990, N - 6426582 Waste Emplacement - East Parameter Units 10-Oct-14 3-Dec-14 24-Feb-15 21-May-15 Min Avg Max Variance Std Dev Depth to standing WL (TOC) (m) 69.31 67.05 67 72.8 67.0 70.52 76.44 16.54 4.07 pH 6.85 7.02 7.19 7.04 6.9 7.03 7.19 0.02 0.14 Conductivity @ 250C (µS/cm) 3660 4000 3990 4310 3660.0 3990.00 4310.00 70466.67 265.46 ORP (mV) -111 -60 -40 -40 -111.0 -62.75 -40.00 1123.58 33.52 Dissolved Oxygen (%) 15 30 30 74 15.0 37.25 74.00 650.25 25.50 TDS (mg/L) 2540 3180 4360 4140 2540.0 3555.00 4360.00 720366.67 848.74 Alkalinity as CaCO3 (mg/L) 237 240 221 250 221.0 237.00 250.00 144.67 12.03 Acidity as CaCO3 (mg/L) 49 44 38 45 38.0 44.00 49.00 20.67 4.55 Sulphate (mg/L) 643 783 912 1070 643.0 852.00 1070.00 33188.67 182.18 Chloride (mg/L) 851 856 811 965 811.0 870.75 965.00 4353.58 65.98 Calcium (mg/L) 531 589 744 771 531.0 658.75 771.00 13684.25 116.98 Magnesium (mg/L) 44 45 54 38 38.0 45.25 54.00 43.58 6.60 Sodium (mg/L) 217 244 263 287 217.0 252.75 287.00 877.58 29.62 Aluminium (mg/L) 4.72 18.30 50.40 8.22 4.7 20.41 50.40 432.87 20.81 Manganese (mg/L) 4.000 4.160 4.740 4.140 4.0 4.26 4.74 0.11 0.33 Zinc (mg/L) 0.192 0.192 0.754 1.090 0.2 0.56 1.09 0.20 0.44 Iron (mg/L) 6.99 23.6 59.7 12.2 7.0 25.62 59.70 564.23 23.75
Groundwater Nett RL Change - Pit to River 9 8 7 6 5 4 3
Nett ChangeNett(m) 2 1 0
BH4BW Nett RL Change DB1W Nett RL Change DB2W Nett RL Change
DB3W Nett RL Change DB4W Nett RL Change DB5W Nett RL Change
Groundwater Nett RL Change - Upgrade of Pit 5.00 4.50 4.00 3.50 3.00 2.50 2.00 1.50 Nett ChangeNett(m) 1.00 0.50 0.00
DB6W Nett RL Change
Groundwater Nett RL Change - Western Irrigation Area 12
10
8
6
4 Nett ChangeNett(m) 2
0
SI1W Nett RL Change SI2W Nett RL Change SI3W Nett RL Change
Groundwater Nett RL Change - Pit to River
25.00 20.00 15.00 10.00
5.00 Nett ChangeNett(m) 0.00
DB7W Nett RL Change DB8W Nett RL Change DB9W Nett RL Change DB10W Nett RL Change
Appendix 5: Blast Monitoring
Duralie Coal Mine Blast Monitoring Results Overpres Ground Overpressure Ground Fisher-Webster sure Site Vibration Monitored Fume Location Date Time Schultz (AB1) Mahony (AAAB2) Moylan (AAAB4) Weismantal Inn Bragg (Additional) "Cumulative Vibration Site (AAAB3) Exceedan "Cumulative Blasts1 Rating Exceedance" 1 Exceedance 1 ce 1 Exceedance" 1 24hr mm/s dBL mm/s dBL mm/s dBL mm/s dBL mm/s dBL mm/s dBL % %
Clareval block 5 & Weismantel Strip 16 03-Jul-14 12:41:00 0.31 87.6 2.71 115.6 2 0.29 104.5 3.35 115.7 100.0% 1 0.0% 0 1 2B Clareval Block 5 04-Jul-14 12:41:00 <0.22 <110.0 0.94 104.4 <0.22 <110.0 1.20 105.7 50.0% 1 0.0% 0 2 Nil Clareval Block 5 08-Jul-14 12:39:00 <0.22 <110.0 0.59 108.1 <0.22 <110.0 0.42 108.8 33.3% 1 0.0% 0 3 Nil Clareval Block 4 11-Jul-14 12:43:00 <0.22 <110.0 0.54 100.4 <0.22 <110.0 0.36 107.6 25.0% 1 0.0% 0 4 Nil Clareval Block 2 16-Jul-14 12:51:00 0.36 93.6 1.76 111.4 0.39 109.6 0.93 110.4 20.0% 1 0.0% 0 5 2B Clareval Block 2 18-Jul-14 12:39:00 <0.22 <110.0 0.52 100.4 <0.22 <110.0 0.30 101.3 16.7% 1 0.0% 0 6 Nil Weismantel Strip 16 22-Jul-14 12:39:00 <0.22 <110.0 0.42 111.5 <0.22 <110.0 0.54 113.6 14.3% 1 0.0% 0 7 Nil
Clareval Block 4 25-Jul-14 12:39:00 <0.22 <110.0 1.24 109.3 0.39 103 1.09 108.4 12.5% 1 0.0% 0 8 Nil Clareval Block 2 29-Jul-14 12:45:00 <0.22 <110.0 0.58 105.9 <0.22 <110.0 0.59 104.9 11.1% 1 0.0% 0 9 2B Clareval Block 2 01-Jul-14 12:49:00 <0.22 <110.0 1.06 113.4 0.31 111.9 0.83 114.1 10.0% 1 0.0% 0 10 Nil Clareval Block 5 05-Aug-14 12:40:00 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 9.1% 1 0.0% 0 11 Nil Clareval Block 4 06-Aug-14 16:53:00 0.31 101.6 1.42 115.3 2 0.26 103.3 1.62 113.4 16.7% 2 0.0% 0 12 Nil Clareval Block 2 08-Aug-14 12:43:00 <0.22 <110.0 0.73 106.4 <0.22 <110.0 0.58 106.5 15.4% 2 0.0% 0 13 Nil Clareval Block 6 13-Aug-14 12:41:00 <0.22 <110.0 1.43 107.2 <0.22 <110.0 0.93 107.3 14.3% 2 0.0% 0 14 Nil Clareval Block 5 19-Aug-14 12:41:00 0.26 93.9 2.55 110.6 0.47 112.0 2.68 111.0 13.3% 2 0.0% 0 15 Nil Clareval Block 2 21-Aug-14 12:59:00 <0.22 <110.0 0.53 96.6 <0.22 <110.0 0.45 99.9 12.5% 2 0.0% 0 16 Nil Clareval Block 5 23-Aug-14 12:45:00 <0.22 <110.0 1.2 105.6 0.39 94.7 1.1 106 11.8% 2 0.0% 0 17 Nil Clareval Block 5 30-Aug-14 12:55:00 0.08 112 1.18 110.1 0.31 88.6 0.93 11.1% 2 0.0% 0 18 Nil Clareval Block 4 05-Sep-14 15:23:00 0.31 100.3 4.05 109.1 0.55 105 3.41 10.5% 2 0.0% 0 19 Nil Clareval Block 3 & 5 09-Sep-14 12:43:00 <0.22 <110.0 1.53 107.2 0.37 88.6 1.04 109.6 10.0% 2 0.0% 0 20 Nil Clareval Block 5 12-Sep-14 12:43:00 <0.22 <110.0 1.25 106.9 0.29 103.6 Installed 16-Sep-14 1.06 107.6 9.5% 2 0.0% 0 21 Nil Clareval Block 4 17-Sep-14 12:36:00 <0.22 <110.0 Removed 16-Sep-14 <0.22 <110.0 0.58 95.8 0.74 101.8 9.1% 2 0.0% 0 22 Nil Clareval Block 5 19-Sep-14 16:56:00 0.31 90.1 0.34 106.2 0.89 108.7 3.75 113.5 8.7% 2 0.0% 0 23 Nil Clareval Block 2 26-Sep-14 16:42:00 0.3 100.3 0.34 102.3 0.8 103.8 0.88 105.2 8.3% 2 0.0% 0 24 Nil Clareval Block 2,3 & 7 03-Oct-14 12:48:00 <0.22 <110.0 0.39 104.8 0.66 103.1 0.86 107.4 8.0% 2 0.0% 0 25 Nil
Clareval Block 7 & Weismantel Strip 16 09-Oct-14 12:46:00 <0.22 <110.0 0.63 106.2 0.38 106.7 1.09 114 7.7% 2 0.0% 0 26 1A Clareval Block 2 10-Oct-14 16:44:00 <0.22 <110.0 0.29 106.7 0.53 103.1 0.65 104 7.4% 2 0.0% 0 27 Nil Clareval Block 6 18-Oct-14 16:48:00 <0.22 <110.0 0.5 115.1 2 0.54 116.4 2 2.94 118.9 10.7% 3 0.0% 0 28 1B Clareval Block 5 24-Oct-14 12:43:00 0.39 84.2 0.46 103.9 0.76 105.8 1.69 111.9 10.3% 3 0.0% 0 29 Nil Clareval Block 5 01-Nov-14 12:39:00 0.26 105.8 0.46 105.6 0.86 99.1 3.00 108.8 10.0% 3 0.0% 0 30 Nil Clareval Block 5 06-Nov-14 12:49:00 <0.22 <110.0 0.46 97 0.48 99.1 2.04 109.3 9.7% 3 0.0% 0 31 1A Clareval Block 3 12-Nov-14 12:45:00 0.32 84.2 0.27 99.3 0.56 105.1 1.09 109.8 9.4% 3 0.0% 0 32 2A Clareval Block 2 13-Nov-14 12:40:00 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 0.35 104.2 9.1% 3 0.0% 0 33 Nil Clareval Block 5 14-Nov-14 12:42:00 <0.22 <110.0 0.3 101.6 0.36 98.3 0.89 109.6 8.8% 3 0.0% 0 34 Nil Clareval Block 3 & 5 19-Nov-14 16:46:00 0.29 92.2 0.32 101.6 0.36 103.9 0.95 109.6 8.6% 3 0.0% 0 35 Nil Clareval Block 6 & 7 21-Nov-14 12:46:00 <0.22 <110.0 0.35 97.8 0.42 101.0 1.7 113.7 8.3% 3 0.0% 0 36 Nil Weismantel Strip 16 25-Nov-14 12:45:00 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 0.35 96.6 8.1% 3 0.0% 0 37 2B Clareval Block 2 27-Nov-14 12:40:00 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 0.38 96.6 7.9% 3 0.0% 0 38 1A
Overpres Ground Overpressure Ground Fisher-Webster sure Site Vibration Monitored Fume Location Date Time Schultz (AB1) Mahony (AAAB2) Moylan (AAAB4) Weismantal Inn Bragg (Additional) "Cumulative Vibration Site (AAAB3) Exceedan "Cumulative Blasts1 Rating Exceedance" 1 Exceedance 1 ce 1 Exceedance" 1 24hr mm/s dBL mm/s dBL mm/s dBL mm/s dBL mm/s dBL mm/s dBL % % Clareval Block 6 28-Nov-14 12:36:00 <0.22 <110.0 0.32 95.1 0.28 105.4 0.96 112.7 7.7% 3 0.0% 0 39 1A Clareval Block 2 03-Dec-14 12:36:00 <0.22 <110.0 0.3 96.1 0.38 83.5 0.68 104.5 7.5% 3 0.0% 0 40 Nil Clareval Block 6 08-Dec-14 14:09:00 <0.22 <110.0 0.46 89 0.43 111.5 2.28 118.5 7.3% 3 0.0% 0 41 1A Clareval Block 2 11-Dec-14 13:02:00 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 0.39 86.1 7.1% 3 0.0% 0 42 1A Clareval Block 6 12-Dec-14 16:43:00 <0.22 <110.0 0.35 91 0.28 109.3 1.15 119.5 7.0% 3 0.0% 0 43 Nil Clareval Block 2 17-Dec-14 12:47:00 0.32 101.7 0.32 93.9 0.67 105.4 0.97 111.4 6.8% 3 0.0% 0 44 Nil Clareval Block 2 23-Dec-14 12:43:00 0.33 95.1 0.3 89 0.59 102.1 1.08 114.5 6.7% 3 0.0% 0 45 1A Clareval Block 7 30-Dec-14 12:37:00 <0.22 <110.0 0.3 89 0.28 91.5 0.92 6.5% 3 0.0% 0 46 Nil Clareal Block 5 05-Jan-15 12:44:00 0.28 84.2 0.35 89 0.77 103.9 2.17 112.3 6.4% 3 0.0% 0 47 Nil Clareal Block 5 08-Jan-15 12:43:00 0.29 84.2 0.43 89 0.78 103.5 1.76 114 6.3% 3 0.0% 0 48 Nil Clareval Block 7 14-Jan-15 12:45:00 <0.22 <110.0 0.57 89 0.62 96.6 0.96 104.5 6.1% 3 0.0% 0 49 Nil Clareval Block 7 21-Jan-15 12:52:00 <0.22 <110.0 0.3 109 0.32 106.1 0.74 109.3 6.0% 3 0.0% 0 50 Nil Clareal Block 5 30-Jan-15 12:41:00 0.44 100.5 0.62 105.3 0.79 104.7 2.86 114.6 5.9% 3 0.0% 0 51 Nil Clareval Block 7 06-Feb-15 13:16:00 <0.22 <110.0 0.32 102.1 0.56 108.1 2.11 117.1 5.8% 3 0.0% 0 52 Nil Clareval Block 7 10-Feb-15 12:43:00 <0.22 <110.0 <0.22 <110.0 0.28 100.4 0.63 105.5 5.7% 3 0.0% 0 53 Nil Clareval Block 6 13-Feb-15 16:39:00 0.28 90.2 0.43 105.3 0.52 110.2 1.53 113.2 5.6% 3 0.0% 0 54 Nil Clareval Block 6 17-Feb-15 12:42:00 <0.22 <110.0 <0.22 <110.0 0.65 108.1 5.67 113.5 5.5% 3 0.0% 0 55 Nil Clareval Block 7 19-Feb-15 12:37:00 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 5.4% 3 0.0% 0 56 1A Clareval Block 6 25-Feb-15 12:43:00 <0.22 <110.0 <0.22 <110.0 0.51 108.4 1.84 117.7 5.3% 3 0.0% 0 57 2B Clareval Block 7 03-Mar-15 12:48:00 0.3 87.7 0.38 97 0.4 95.6 1.03 110.7 5.2% 3 0.0% 0 58 Nil Clareval Block 6 04-Mar-15 12:35:00 <0.22 <110.0 <0.22 <110.0 0.25 99.8 0.99 108.4 5.1% 3 0.0% 0 59 Nil Clareval Block 6 10-Mar-15 12:44:00 <0.22 <110.0 0.32 105 0.29 103.9 1.13 113 5.0% 3 0.0% 0 60 1A Clareval Block 7 20-Mar-15 13:56:00 0.34 87.7 0.57 93.9 0.5 103.1 1.46 108.2 4.9% 3 0.0% 0 61 Nil Clareval Block 7 27-Mar-15 16:38:00 <0.22 <110.0 <0.22 <110.0 0.28 101.6 0.28 110.2 4.8% 3 0.0% 0 62 Nil Clareval Block 7 01-Apr-15 12:42:00 <0.22 <110.0 0.3 101.1 0.4 101.6 0.86 107.2 4.8% 3 0.0% 0 63 Nil Clareval Block 7 13-Apr-15 12:36:00 <0.22 <110.0 0.41 95.1 0.53 103.5 1.34 116.3 4.7% 3 0.0% 0 64 Nil Clareval Block 5 17-Apr-15 12:35:00 0.4 84.2 0.54 89 0.95 103.5 2.05 106.4 4.6% 3 0.0% 0 65 Nil Clareval Block 5 29-Apr-15 12:45:00 <0.22 <110.0 <0.22 <110.0 0.41 97.5 1.17 103.4 4.5% 3 0.0% 0 66 Nil Clareval Block 5 02-May-15 12:40:00 0.33 84.2 0.32 89 0.61 108.4 1.17 109.5 4.5% 3 0.0% 0 67 2B Clareval Block 5 04-May-15 13:05:00 <0.22 <110.0 <0.22 <110.0 0.26 94.4 0.59 100.1 0.37 91 4.4% 3 0.0% 0 68 Nil Clareval Block 5 11-May-15 13:26:00 0.49 92.2 0.68 92.6 3.2 101 4.2 112.3 1.73 99.5 4.3% 3 0.0% 0 69 Nil Clareval Block 7 18-May-15 12:56:00 <0.22 <110.0 0.38 92.6 0.45 103.1 0.9 104.2 0.88 101 4.3% 3 0.0% 0 70 1A Clareval Block 5 22-May-14 12:42:00 0.4 87.7 0.38 91 0.96 102.6 3.44 107.2 0.91 96.2 4.2% 3 0.0% 0 71 2A Clareval Block 7 27-May-15 12:41:00 0.26 87.7 0.32 91 0.43 99.1 0.85 108.4 0.93 98.3 4.2% 3 0.0% 0 72 Nil Clareval Block 6 03-Jun-15 12:12:40 0.32 87.7 0.32 89 0.64 102.6 2.07 110.4 0.66 102.6 4.1% 3 0.0% 0 73 2A Clareval Block 2 10-Jun-15 12:47:00 0.38 87.7 <0.22 <110.0 0.58 99.8 1.46 106.1 1.02 100 4.1% 3 0.0% 0 74 2A Clareval Block 6 12-Jun-15 13:14:00 <0.22 <110.0 <0.22 <110.0 0.43 104.3 1.44 111.7 0.53 105 4.0% 3 0.0% 0 75 Nil Clareval Block 2/7 19-Jun-15 16:45:00 0.31 101.1 0.46 91 0.77 97.5 - - 1.09 104 3.9% 3 0.0% 0 76 Nil Clareval Block 6 24-Jun-15 12:44:00 <0.22 <110.0 0.38 89 0.23 95.6 0.86 105.2 <0.22 <110.0 3.9% 3 0.0% 0 77 Nil Clareval Block 7 30-Jun-15 12:43:00 <0.22 <110.0 0.46 89 0.53 103.9 1.25 117.2 0.43 105.2 3.8% 3 0.0% 0 78 Nil Clareval Block 7 (re-fire) 01-Jul-15
Note 1 Site exceedance, monitored blasts & cumulative exceedances reference blasts between 4/9/13 and most recent blast. Note 2 Blast exceedance of 115dBL or 5mm/s. Note 3 Blast exceedance of 120dBL or 10mm/s
*Note: Blast compliance, · No more than 5% of total blasts for annual monitoring period to exceed an overpressure of 115dB(L) or ground vibration of 5mm/s. · No blast is to exceed an overpressure of 120dB(L) or ground vibration of 10mm/s. · Weismantel’s Inn – No blast is to exceed 10 mm/s ground vibration. No limit on overpressure. · Mammy Johnson’s Grave - No blast is to exceed 5 mm/s ground vibration. No limit on overpressure.
Appendix 6: Complaints
Duralie Complaint Summary
Period: 12 Months to June 2015 Total No. of Complaints: 56 (39noise, 13 blasting, 1 air quality, 3 train, 0 other) Total No. of Complainants: 12 Time/Date of Complainant Method of Nature of Complaint Location Complaint Complaint Outcome 18/07/2014 Approx. 5km SE of Direct to TD Evaporative Fan Remains part of ongoing operational review. mining activities Noise 22/07/2014 4.5km NE of noise Complaints line Evaporative Fan Remains part of ongoing operational review source Noise 29/07/2014 4.5km NE of noise Complaints line Evaporative Fan Remains part of ongoing operational review source Noise 29/07/2014 East of operations Complaints line Evaporative Remains part of ongoing operational review Fan, Rotary Breaker, and Reversing Alarm Noise 29/07/2014 SW of operations Complaints line Blast and Investigation undertaken, no exceedance of criteria. Advice provided vibration to complainant. 8/08/2014 Wards River Village Complaints line Mine Noise Complaint regarding mine noise getting worse. Real-time noise review and no exceedance of criteria. Advice provided to operations and response to complainant. 12:36hrs 15/08/2014 Wards River Village Complaints line Mine Noise Investigation undertaken, no exceedance of criteria. Advice provided and Via EPA to operations. Discussion held with complainant and advice provided on rights under the project approval. 13:14hrs 30/08/2014 4.5km NE of noise Complaints line Overpressure Complainant stated blast overpressure larger than normal. No source from blast exceedance of criteria. Response provided to complainant. 13:18hrs 30/08/2014 East of operations Complaints line Overpressure Complainant stated blast overpressure larger than normal. No from blast exceedance of criteria. Response provided to complainant. Complainant forwarded to blasting operations. 16:47hrs 4/09/2014 Wards River Direct call Mine Noise No exceedances on real-time noise system. No call-back required.
8:05hrs 20/10/2014 4.5km NE of noise Direct e-mail Evaporative fan Call returned to complainant. Advised of current operational controls. source noise Feedback provided to operational management and a review of evaporator use under certain times and weather conditions conducted.
23:45 hrs 24/10/2014 Wards River Village Complaints line Mine Noise Call returned to complainant. Complaint was provided direct to OCE to review location of operations and follow-up actions if required. No exceedance of real-time noise alarm levels.
15:36hrs 13/11/2014 Mill Creek, 5.8km SE Complaints line Evaporative Fan Call returned to complainant. Complainant advised of current of noise source Noise operational controls and adjustment to hours of operation of fans. 8:58hrs 15/11/2014 Mill Creek, 5.8km SE Complaints line Mine Noise Call returned to complainant. Investigation by OCE at time of of noise source complaint showed no unusual activities. Review of real-time noise system showed no exceedance of noise alarm levels. 20:00hrs 16/11/2014 Approx. 5km SE of Direct email Mine Noise Original complaint not received, complaint resent and received on mining activities 16/11/2014, complainant contacted and complaint addressed below. 20:00hrs 16/11/2014 Approx. 5km SE of Direct email Mine Noise Complainant contacted. Investigations at time of complaint revealed mining activities no unusual activities. Real-time noise system review showed good profile and no triggering of alarm levels. Complainant advised of current noise controls and adjustment to hours of operation of evaporative fans.
18:30hrs 20/11/2014 Approx. 1.5km W of Community Mine Noise Call returned to complainant. Investigation undertaken and showed mining operation Hotline noise protocol had been followed. Review of real-time noise system showed profile low throughout night. Visit to complainants location at 19:30hrs revealed only minor mine noise audible. 8:57hrs 23/11/2014 Mill Creek, 5.8km SE Community Evaporative Fan of noise source Hotline Noise Complainant contacted and advised of current fan operating hours. 9:30hrs 1/12/2014 Approx. 5km SE of Direct email & Evaporative Fan Complainant was contacted and advised of fan operating hours, not mining activities Community Noise consistent with complaint time. Complainant revised estimation of Hotline when fans where creating problem. Refinement of the fans operating times is ongoing. 15:00hrs 5/12/2014 Approx. 5km SE of Direct Email Evaporative Fan Call returned to complainant. Investigation showed only noise mining activities Noise attenuated fans operating at time of complaint. Real-time noise system below trigger levels. No inversions present. 19:15hrs 7/12/2014 Approx. 5km SE of Community Evaporative Fan Call returned to complainant. DCPL advised fans switched off at mining activities Hotline Noise 19:15hrs due to approaching storm and not switched back on that night. 17:00hrs 12/12/2014 Approx. 2.6km SW of Direct to Mobile Blast and Review of blast results indicates no exceedences. Complainant advised blast Vibration they had not received copies of previous dilapidation report. DCPL provided the report to complainant. Complainant then accused mine of blasting at night. DCPL advised the mine has never blasted out of approved hours. DRE investigating complainant’s night blasting claims. 12:20hrs 17/12/2014 Wards River Direct to Mine Air Quality Complainant approached mine staff on blast sentry duty with and EPA complaint regarding air quality. Significant levels of haze was present in valley all day which drifted in with southerly change. Blast sentry advised of complaints procedure. Complainant advised they would be contacting the EPA. Investigations by EPA and mine staff determined haze in air not related to mine activity. No action required. 12:40hrs 30/12/2014 Approx. 2.6km SW of Direct to Mobile Blast and DCPL advised blast within criteria. Confirmed receipt of previous blast Vibration building inspections and advised resident of their right to property inspection, which the resident declined. DCPL advised of the right to apply for an independent investigation through DP&E. Complainant stated that mine should just purchase the property to save the mine a lot of headache to which they were advised mine was not obliged to purchase their property. 13:00hrs 8/01/2014 Approx. 2.6km SW of Direct to Mobile Blast and DCPL advised blast within consent criteria limits at approved blast blast vibration monitors. Advised of right to property inspection which was declined by the complainant. Considerations for additional monitoring at the residence will be addressed. Complainant commented on increase in rabbits numbers in the area, they were advised of mines feral animal control program. 13:30hrs 19/01/15 Wards River village Direct to phone Mine Noise Complaint reported via EPA regarding mine noise. EPA requested a response which was provided regarding operational activities, weather conditions and the real-time noise logs. Normal operational conditions noted. Real-time noise profile during the evening and night was very low. Real-time audio files indicate dominant noise insects and birds, very minor mine noise audible occasionally. 21:39hrs 29/01/15 Wards River Village Community Mine Noise Complainant stated excessive noise from the Duralie Mine. The OCE Hotline received complaint and inspected operations promptly. No excessive noise, and dig and haul operations low in pit. Real-time noise profile was below the alarm level (42dBA) during entire night shift. A strong temperature inversion was present. Real-time audio files indicated dominant noise insects and frogs, traffic, very minor background mine noise audible. Response call to complainant who advised noise improved after 10pm.
13:30hrs 30/01/15 Wards River Village Community Mine Noise Complainant stated excessive noise and train horn use from the Hotline and Via shuttle train. A response call was made to the complainant and a EPA meeting arranged and held to discuss the above matters. A response was also provided to the EPA. 13:10hrs 30/01/15 Approx. 3km N of Direct call to AA Blasting Complaint received regarding blast shaking house and "smell of operation. mobile vibration, dust sulphur". DCPL called complainant and advised the shot details with and smell. results at the neighbouring property monitor of 105.3dB and low ground vibration (0.62mm/s). Two blast videos reviewed indicated no visible fume and low dust levels including review by shotfirer. An offer to visit the resident was put forward. It was agreed that Duralie would arrange a structural inspection by an independent consultant.
13:20hrs 30/01/15 Approx. 2.5km NNE of Direct to AA Blasting Complaint received regarding blast, smell, visual dust, noise and blast location to Mobile vibration, dust vibration from the shot. Initial contact was made with the Residence and smell. complainant, after previous attempts, advising of results and review of blast video and shotfirer records. A meeting was arranged at the complainant’s property. Duralie representative provided details of the blast including the fume ranking and video of shot showing no fume and localised dust within the pit including process followed if fume is recorded. DCPL provided publically available fact sheets on blasting fume and offered to arrange a meeting with a blasting product specialist. Also advised complainant an independent engineer could undertake an inspection if requested. 18:24hrs 30/01/15 Approx. 1.5km NNE of Email to MP Blast vibration Complaint regarding blast vibration with a request for blast results. operation. Email response sent to the complainant advising blast results and compliance limits as requested by complainant. The blast was compliant within approval conditions.
7:27hrs 04/02/15 Wards River Village SMS direct to Mine noise Complaint received regarding mine noise. DCPL contacted complaint, mobile explained operational locations of equipment including recent noise monitoring in Wards River. Provided review of meteorological conditions and offered visit to residence including provision of results if desired. Details reported to operations. Attended noise monitoring is undertaken in proximity to complainant’s residence showing no exceedance of noise criteria.
19:57hrs 17/02/15 Wards River Village Community Train noise Complaint received regarding the use of the train horn through a rail hotline crossing. Meeting was agreed to be arranged with complainant to discuss recent monitoring & noise loggers as part of routine monitoring at Wards River. Following confirmation, Aurizon horn was activated for 2.5 sec for safety purposes in accordance with operational protocols. A meeting was scheduled and held in March with Aurizon, Yancoal representative and Pacific National at Wards River with the resident to address concern regarding train horn use. 11:50hrs 28/02/15 Approx. 5km SE of Community Evaporative fan Complaint received regarding evaporative fan noise during the night mining activities hotline noise and additional complaint received the following morning at 8:30am. SMS received by the OCE, operations inspected immediately, no mining operations at high dump levels. Evaporators were the only elevated noise source on the waste emplacement and these were promptly shutdown at 12:10am with fans near AD2 previously turned off at 10pm. There were no mining operations on Sunday. Complainant raised a number of historical items and recent correspondence regarding noise mitigation request which was declined. Duralie representative offered a visit to the resident to discuss both the letter, review undertaken and management of the fans including attenuation, bunding and monitoring. Meeting rescheduled by complainant. Real-time noise system reviewed and below criteria levels. Complaint advised to operations. 7/03/2015 Approx. 5km SE of Community Noise Complaint was in relation to the previous weekend (Saturday 28 Feb) mining activities hotline at approximately 2am and noise level from the mine. The complainant advised that meteorological conditions can contribute. Complainant advised inversions were monitored and DCPL explained current real time noise monitoring and recent noise assessment of Duralie Modification. Explained evaporative fans were off at 2am and trucks running to top dump from digger 19 (down low in pit). Advised additional information can be provided, monitoring indicates compliance, although may be audible under certain weather conditions.
23:33hrs 9/03/15 Approx. 5km SE of Community Noise Complaint received regarding 'intrusive mine noise'. Complainant mining activities hotline contacted and advised of operations and OCE review of operations. A visit by General Manager was offered following an earlier enquiry. Also offered further noise monitoring at the residents location in addition to the previous years of historical monitoring undertaken, however resident declined. Weather conditions and noise data reviewed with no exceedance of consent criteria. Operations responded to SMS and were also notified.
00:30hrs 7/03/15 Wards River Email to MP, via Mine Noise Response sent to the EPA regarding noise complaint including EPA information on operations, weather conditions and real-time noise monitoring. 23:00 hrs 9/03/15 Wards River Email to MP, via Mine Noise Response sent to the EPA regarding noise complaint including EPA information on operations, weather conditions and real-time noise monitoring. 8:00 hrs 11/03/15 Wards River Village Direct to Mobile Train noise Complaint received regarding extended use of train horn of Aurizon shuttle train. DCPL indicated would contact the shuttle train to verify train given various rail users (i.e. freight, passenger, coal trains). Indicated would contact Aurizon directly and schedule a meeting to ensure Aurizon can respond accordingly. Aurizon contacted complainant on 11 March. A list of requested documents by the complainant was received via email. A meeting was scheduled and held with Aurizon, Yancoal representative and Pacific National at Wards River with the resident to respond to the train horn use. 00:44hrs 12/03/15 Approx. 5km SE of Community Evaporative fan Complainant contacted regarding evaporative fan complaint lodged mining activities hotline noise through the hotline. Complainant expressed dissatisfaction regarding correspondence declining a request for noise mitigation subsidy at a proposed development. Further discussion was held between DCPL and complainant discussing historical and ongoing matters of concern. Addressed contents of letter and review undertaken into both letter and evaporative fan use. Additional monitoring conducted near the property evening 12th March, very low levels of audibility, wind direction towards monitoring location, moderate inversion conditions, train loading on loop and evaporative fans & equipment operating. 9:38hrs 15/03/15 4.5km NE of noise Community Evaporative fan Contacted complainant who advised the evaporative fans were clearly source hotline noise audible on Sunday morning from 7am-9:30am. DCPL advised start and stop times for the evaporative fans are adjusted moving into the cooler months together with efforts recently to start these fans later in the morning due to humidity. No trucks or excavator equipment was operating. Discussed control measures regarding the fans and noise levels. 10:04hrs 18/03/15 Approx. 5km SE of Direct to Mobile Evaporative fan Complaint registered regarding evaporative fan noise reported to be mining activities noise intrusive. Evaporative fans were started at 8:30am and 8:40am respectively. Inversion data was reviewed from inversion monitoring towers, wind direction reviewed, and humidity levels suitable. Noise levels were within daytime consent criteria and no noise alarms received. 3:13hrs 20/03/15 Wards River Village Community Mine Noise Complainant advised noise from 2:40am to 3:20am sounded like hotline 'revved up diesel engines'. DCPL advised reduced number of operating units and operations ceased at 3:30am. DCPL provided information on weather conditions and real-time noise data and advised these conditions would not typically enhance noise levels in the Wards River direction. No noise alarms triggered and within consent criteria. 23:26hrs 1/04/15 Approx. 5km SE of Community Evaporative fan Complaint registered through the community hotline regarding noise mining activities hotline noise from the operation of evaporative fans. Investigation noted moderate to strong inversion conditions prior to time of the complaint and wind direction from the south to south-west. Units near AD2 were not operating and the remaining units on spoil dump turned off at 1:00am. Fans operating as approved under the Duralie Project Approval. The complainant did not request a return call.
14:00hrs 15/04/15 Wards River Village Direct to Mobile Train noise Complaint registered direct to Yancoal employee mobile regarding shuttle train horn noise at 11:55am northbound and 1:50pm southbound. DCPL contacted the complainant and shuttle train companies respectively. Advised track work had been noted within the area by third party personnel. Complainant disagreed & followed own line of investigation. DCPL met with complainant on 16 April to review complainants train recordings. Monitoring results shared and the requirement of the horn for safety purposes communicated.
00:27hrs 19/04/15 Approx. 5km SE of Community Mine Noise Noise complaint received at 12:27am. Standard operations at time of mining activities hotline complaint. After receiving noise complaint the OCE inspected operations and moved trucks dumping to the south to a lower dump. Evaporators were shutdown at approx. 12:30am. Weather conditions were also reviewed.
01:00hrs 16/04/15 Wards River Village Via EPA Mine Noise Complaint forwarded from EPA on 23-Apr-15 regarding mine noise on 16-Apr-15. DCPL provided a response to the EPA with information on operations, real-time noise profiles and modelled noise levels in Wards River Village and review of real-time noise audio files. Information was also provided on weather conditions. No further request has been received from the EPA. 00:16hrs 5/05/2015 Wards River Village Community Mine Noise Complaint regarding mine noise, trucks and machinery. OCE inspected Hotline operations. Only two excavators operating low in the pit. Following the complaint operatoins were modified to an alternative lower RL110 dump. Weather conditions and inversion strengths were reviewed. The real-time noise monitor recorded low levels during the entire evening and night period. Audio files were reviewed and the dominant noise was insects and frogs, passing aircraft and traffic with minor mine noise at times. DCPL called complainant and discussed investigation and actions undertaken. 1:00hrs 9/05/2015 Wards River Village Community Mine Noise OCE received noise complaint and inspected operations at 1:02am. Hotline Real-time noise level low however shut down Ex 5028 which was rehandling gravel from RL 114 dump and instructed dozers on high dumps to modify operations. Only one other excavator operating. The real-time noise monitor recorded low levels in the hours prior to the complaint and would be lower at Wards River Village. Real-time audio files reviewed. DCPL called complainant and provided information as per the investigation above including options for further investigation and process through the DP&E. 00:14hrs 16/05/2015 Wards River Village Community Mine Noise OCE received a noise complaint via the hotline regarding mining Hotline machinery and trucks. OCE inspected operations. The real-time noise monitor recorded low levels in the hours prior to the complaint. Weather conditions and audio files were reviewed from the Real Time Noise Monitor (RTNM). DCPL called complainant and provided information as per the investigation. The complainant disputed noise measurements from the RTNM. DCPL advised of service and calibration procedures for the RTNM. Complainant requested noise levels modelled at Wards River at the time of the complaint which were provided to the complainant.
19:12hrs 19/05/2015 Approx. 5km SE of Community Mine Noise & Complainant stated "Noise all day then fan noise at night". OCE mining activities Hotline Evaporative received SMS at 8:00pm and contacted the CHP operator who fans confirmed the evaporators had already been shutdown at 7:50pm. No other changes to operations during the course of the day. Weather conditions reviewed. There was no indication of elevated noise levels from the real-time noise monitor. Complainant advised they did not require a return call.
13:00hrs 22/05/2015 Approx. 2.6km SW of Direct to Mobile Blast and Complaint received direct to DCPL phone regarding a blast stating the blast Vibration blast had shaken the house. No call back required. A blast monitor is now operating at the complainant’s property. Blast results: 0.91mm/s ground vibration, 96.2dB(L) overpressure.
13:00hrs 27/05/2015 Approx. 2.6km SW of Direct to Mobile Blast and Complainant registered direct to DCPL phone advising they had felt the blast Vibration blast. DCPL representative discussed the blast location and monitoring results (0.93mm/s, 98.3dB(L)), indicating low results recorded at the monitor on the complainants property. Complainant believed the ground vibration is amplified due to the geology at their residence. DCPL offered a structural inspection by an independent engineer however declined by the complainant. Advised the blast monitor records the levels at the residence regardless of any geological influences. Discussed levels recorded would be felt however it was well below approval limits and would not cause structural damage. 12:50hrs 10/06/2015 Approx. 2.6km SW of Direct to mobile Blast and Complaint received by DCPL advising that the resident had felt the blast Vibration blast and wanted to record a complaint. DCPL representative discussed the blast location and the blast results recorded at the monitor located at the residence, 1.02mm/s ground vibration, 100.0dB(L) overpressure. This was similar to recent blasts. The complainant disputed the results and claimed the blasting was damaging the house. DCPL advised again of the right to a building inspection however the complainant declined and disputed previous findings of shrinking and swelling causing cracking and not blast induced damage. 16:50hrs 19/06/2015 Approx. 2.6km SW of Direct to mobile Blast and Complaint received by DCPL advising that the resident had just felt the blast Vibration blast and wanted to record a complaint. DCPL representative discussed the blast location and the blast results recorded at the monitor located at the residence, 1.09mm/s ground vibration, 104.0dB(L) overpressure. Complainant stated the blast was larger than normal however the results didn't confirm this. The complainant disputed the results. DCPL advised again of the right to a building inspection and the right to refer to the DP&E who can assess the grounds for an independent investigation. The complainant declined both options and advised just to record the complaint. 10:30hrs 22/06/2015 Approx. 5km SE of Community Evaporative A complaint was received regarding noise from evaporative sprays at mine hotline spray noise 10:30am. AD2 evaporative sprays had been started at 8:30am, and waste dump sprays hadn’t been operating during the morning on 22/6. DCPL staff attended the complaint location from 10:45am to 11:15am to investigate. Evaporative fans weren't audible and no other similar noise source was identified. It was generally quiet with bird noises and other animal noises. Background mine noise was faintly audible. A separate noise monitoring logger along Mill Creek road was also reviewed. The complainant declined a call back.
Appendix 7: Duralie CoalMine Report 2015 Annual Biodiversity
Duralie Coal Mine – Annual Biodiversity Report 2015 FOR THE YEAR ENDING 30 JUNE 2015
DURALIE COAL LTD | PART OF THE YANCOAL AUSTRALIA GROUP
Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
CONTENTS
1 Introduction ...... 3 2 Summary Progress Report ...... 3 2.1 Performance Criteria ...... 3 2.2 Status ...... 3 2.3 Proposed Activities ...... 7 3 Vegetation Clearance Report ...... 8 4 Seed Collection and Propogation ...... 8 5 Salvaged and Reused Material for Habitat Enhancement ...... 8 6 Controlling Access and Managing Grazing ...... 8 7 Weed Control and Monitoring ...... 8 8 Feral Animal Control and Monitoring...... 9 9 Nest Box Programme ...... 9 10 Vegetation Management Unit (VMU) Monitoring ...... 10 11 Bushfire Management ...... 11 12 Mammy Johnsons River Stabilisation ...... 11 13 Long Term Security and Conservation Bond ...... 11 14 Commonwealth Approval Compliance Reports ...... 12
DURALIE COAL LTD | PART OF THE YANCOAL AUSTRALIA GROUP PAGE 2 OF 13
Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
1 INTRODUCTION The Duralie Coal Mine (DCM) Annual Biodiversity Report contains a review of DCPL’s environmental performance and progress against the requirements of the DCM Biodiversity Management Plan (BMP) covering the mining lease area and biodiversity offset areas.
This Annual Biodiversity Report is included as an Appendix of the DCM Annual Review which will be made publicly available on the Duralie Coal website, www.duraliecoal.com.au.
2 SUMMARY PROGRESS REPORT
2.1 Performance Criteria The performance criteria for the mining lease and offset areas are presented in Table 13 of the BMP (shown below as Table 1). The performance criteria have been developed to meet the objectives for the areas described in Section 2 of the Biodiversity Management Plan (BMP). All performance criteria are linked to the management specifications listed in the BMP Section 6, and monitoring/reporting specifications in the BMP Section 7. Further detail on the status of performance criteria is provided in the subsequent sections.
2.2 Status A summary of the status of performance criteria for Year 1 (2013), 2 (2014) and 3 (2015) of the Biodiversity Management Plan is provided in Table 1.
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
Table 1: Biodiversity Management Plan Performance Criteria Performance Criteria Timeframe Status Comment The long-term security has been provided for the Offset areas. Year 1 Further to the information provided in the 2014 Annual Biodiversity Report regarding the (2013) status of the public positive covenant registration: On 8 December 2014 DCPL requested an extension of the timing for securing the DCM offset area in perpetuity (i.e. via public positive covenants) until 30 June 2015 whilst the documents were still with DP&E for review. In a letter to DCPL dated 11 December 2014, the DP&E granted an extension of the timing
for securing the offset area to 30 June 2015. On 18 December 2014 DCPL received advice from the DP&E that the Secretary of the Department has signed the 3 public positive covenants and 3 Restrictions on Use of Land instruments to secure the Duralie biodiversity offsets. On 8 January 2015 DCPL lodged the public positive covenant documents with the draft terms and conditions with the NSW Land and Property Information (LPI) office for registration. Registration has now been completed with the NSW LPI.
The conservation bond has been calculated. Completed no additional progress since last report. Seed collection (for required species as specified) has commenced during Completed no additional progress since last report. vegetation clearance or an alternate seed source has been obtained. A baseline Landscape Function Analysis Report has been undertaken for Completed no additional progress since last report. the Offset area. Hollow bearing habitat features (nest boxes) have been installed. Australian Museum Consulting was commissioned by DCPL to undertake fauna management works in the offset area during the reporting period. A further 45 nest boxes were installed in September 2014 in the offset area to satisfy the requirements of the Biodiversity Management Plan Vegetation Clearance Protocol (Section 5.4.1). Monitoring of the nest boxes has continued during the reporting period. Tree hollows removed during vegetation clearance activities continue to be recorded and replaced with nest boxes of a similar size and function. Suitable material for habitat enhancement has been salvaged during any Completed no additional progress since last report. vegetation clearance activities and placed into areas undergoing revegetation. A detailed design for the in-stream rehabilitation of a severely eroded Completed no additional progress since last report. section of Mammy Johnsons River has been prepared. Initial feral animal study has been undertaken, with control program initiated Completed no additional progress since last report. where required. Pre-cultivation spraying has been undertaken in all installation Vegetation Completed no additional progress since last report. Management Units (revegetation) as well as initial weed treatment of all remnant enhancement and regrowth management Vegetation Management Units.
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
Performance Criteria Timeframe Status Comment Operational review for road and fire trail construction, culverts and Year 1 Completed no additional progress since last report. cultivation has been completed. (2013) Access tracks, fire trails, firebreaks, fencing and culverts have been Completed no additional progress since last report. completed. Roads and Maritime Services consultation has been commenced regarding During 2014 DCPL installed wildlife warning signage in accordance with advice from placement of traffic calming devices and signage on the Johnson’s Creek Great Lakes Council and with regard to Australian Standard AS1742.2. Further Road bisect area of the Offset. correspondence was held with GLC Ecologist in 2015 regarding future requirements for traffic controls with the offset areas. This has been completed with reassessment in a further three years (2018). Assessment has been completed regarding evaluation of surrounding Completed no additional progress since last report. landholders and the local community regarding participation in implementation of this Biodiversity Management Plan. Weed control of woody weeds in all Vegetation Management Units has Completed. DCPL arranged a meeting the Great Lakes Council weeds officer to been commenced (Section 7). determine appropriate methods for control of woody weeds within the Mammy Johnsons River Riparian Zone. Several options will be trialed in 2015/16. Monitoring and reporting has been undertaken. Completed no additional progress since last report. Seed collections to obtain required seed quantities for future revegetation Year 2 Greening Australia completed a report on seed collection targets for the biodiversity has been finalised. (2014) offsets in November 2013. Following this a licenced contractor was engaged to undertake seed collection activities during Summer 2013/14. Seed collection has now been completed with the exception of 12kg of tree and shrub seed as certain species were not available at the time of collection. These species will continue to be collected on an opportunistic basis. Maintenance of all access tracks and fire trails has been undertaken. Maintenance of all constructed access tracks and fire trails has been undertaken as necessary during 2014. Fire management activities have been undertaken as required. Fire management activities have been discussed in consultation with the local Rural Fire Service unit with controls to be implemented in 2015. Feral animal assessment has been undertaken and control initiated if During the current reporting period a wild dog trapping program was undertaken in the applicable. area surrounding the Stratford Mine Site and broader region. A subsequent survey will be undertaken in 2015 to determine requirements for ongoing control measures. Control of exotic Sporobolus and fireweed has been undertaken in all Weed control activities were undertaken from November 2013 to May 2014 for the target installation Vegetation Management Units. species across all VMU’s within the offset areas. Success of the weed control activities has been monitored. Weed control activities recommenced in October 2014 targeting several key species during Spring and Summer. Follow-up weed treatment of all remnant enhancement and regrowth Following the initial weeds assessment undertaken by Greening Australia in April/May management Vegetation Management Units has been completed. 2013 DCPL engaged a local contractor in October 2013 to undertake pre-cultivation spraying and initial weed treatments works in the Vegetation Management Units. Weed management activities continued through summer 2013/14 and were tracked against the Greening Australia report. Follow-up weed treatment of all remnant enhancement and regrowth management Vegetation Management Units recommenced in October 2014 and were continued through Summer 2014/15.
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
Performance Criteria Timeframe Status Comment Initial revegetation has been completed (for Vegetation Management Units Year 2 DCPL has completed an operational review for cultivation within the offset area. Initial I, S, U and AB). (2014) revegetation works for Vegetation Management Units I, S, U and AB were scheduled to commence following seed collections (refer above). The initial revegetation works are now scheduled to be undertaken during the Spring 2015 with the timing dependent on suitable weather conditions and rainfall. Preparation works are currently being undertaken.
Additional pre-plant spray in all installation Vegetation Management Units Year 3 The trial revegetation works are now scheduled to be undertaken during the Spring of has been undertaken where required. (2015) 2015 with the timing dependent on suitable weather conditions and rainfall. Pre-cultivation spraying will be undertaken in preparation for the revegetation works. Installation of seedlings in all Vegetation Management Unit’s has been DCPL has completed an operational review for cultivation within the offset area. Initial completed. revegetation works for Vegetation Management Units I, S, U and AB are now scheduled to be undertaken during Spring of 2015 with the timing dependent on suitable weather conditions and rainfall. Following the trial revegetation works the annual LFA monitoring will be undertaken and include a review of the success of the trials. Recommendations from the review will be used to develop an operational plan for the full offset revegetation with the works scheduled to be undertaken during the Spring 2016. Seed collections have been undertaken if necessary to obtain required Seed collection has now been completed with the exception of 12kg of tree and shrub seed quantities for future revegetation. seed as certain species were not available at the time of the initial collection. These species will continue to be collected on an opportunistic basis. Additional seed will also be collected for use in the DCM rehabilitation areas. Maintenance of all access tracks and fire trails has been undertaken. Maintenance of all constructed access tracks and fire trails will continue to be undertaken as necessary during 2015. Fire management activities have been undertaken as required. Fire management activities have been discussed in consultation with the local Rural Fire Service unit with controls to be implemented in 2015. Feral animal control has been undertaken if applicable. An initial feral animal study was undertaken by Australian Museum Consulting in March 2013. During the current reporting period a wild dog trapping program was undertaken in the area surrounding the Stratford Mine Site and broader region. A subsequent survey will be undertaken in 2015 to determine requirements for ongoing control measures. Follow up treatment of priority weeds has been undertaken in remnant Follow-up weed treatment of all remnant enhancement and regrowth management enhancement and regrowth management Vegetation Management Units. Vegetation Management Units continued through Summer 2014/15. Weeds management activities will recommence in September 2015. Monitoring and internal reporting has been undertaken. As described in Section 7 of the Biodiversity Management Plan this annual report reviewing DCPL’s environmental performance and progress against the requirements of the Biodiversity Management Plan, including monitoring and reporting, has been prepared for the year ending 30 June 2015 and will be appended to the 2015 Duralie Coal Mine Annual Review. Legend Not commenced In progress Completed
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
2.3 Proposed Activities Proposed activities for the DCM biodiversity offset areas will focus on the completion of remaining Year 3 deliverables and continuing the deliverables described for Year 3 onwards as per the BMP Table 12 (Proposed project stages and sequence).
Table 12: Proposed Project Stages and Sequence Project Stage Deliverable Section Reference/ Anticipated Specification Location Time Frame
Full Vegetation Management Undertake additional pre-plant spray in all installation Vegetation Management Units Year 3 (2015) Unit installation provided in Figure 7 where applicable. establishment Based on learnings from the revegetation trials, implement the installation of seedlings and/or direct seeding in all Vegetation Management Unit’s using the species palette. 6.11 Continue seed collections if necessary to obtain required seed quantities for future revegetation. 6.1 Undertake maintenance of all access tracks and fire trails. 6.7 Undertake fire management activities as required. 6.9 Continue feral animal and priority weed control if applicable. 6.5 Maintenance Undertake track maintenance. 6.7 Year 3 onwards (2016 onwards) Undertake maintenance of all installation Vegetation Management Units. 6.11 Undertake follow up treatment of priority weeds. 6.5
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
3 VEGETATION CLEARANCE REPORT Vegetation clearance for the period to July 2014 to June 2015 was undertaken in accordance with the BMP Section 5.4 Vegetation Clearance Plan. Prior to any clearance operations vegetation pre-clearance surveys were undertaken. Appendix 1 contains a summary of the habitat features cleared and any fauna observed (species, number and condition) during clearance operations. This information is used to determine the requirements for nest box replacement in offset areas (refer Section 8).
Areas cleared of vegetation during the reporting period included a strip along the western side of the Southern Limb. During the vegetation clearance operations for the reporting period no threatened species were observed or encountered. At the end of the reporting period a total of 44 tree hollows from 5 trees had been removed (Appendix 1).
4 SEED COLLECTION AND PROPOGATION Greening Australia completed a report on seed collection targets for the biodiversity offsets in November 2013. Following this a licenced contractor was engaged to undertake seed collection activities during Summer 2013/14. A detailed list of seed collected was shown in the 2014 Annual Biodiversity Report Appendix 2. At the end of the 2013/14 seed collection round 12kg of tree and shrub seed was still remaining as certain species were not available at the time of collection. These species will continue to be collected on an opportunistic basis. Additional seed has been and will continue to also be collected for use in the DCM rehabilitation areas on an opportunistic basis.
5 SALVAGED AND REUSED MATERIAL FOR HABITAT ENHANCEMENT The BMP requires salvaged material from vegetation clearance activities to be used for habitat enhancement within the revegetation areas.
During the reporting period cleared vegetation was managed as follows:
Suitable trees and stumps salvaged and stockpiled for reuse; Vegetation mulched and incorporated into topsoil for rehabilitation.
During the reporting period salvaged material was stockpiled. Further installations or use of salvaged material in line with rehabilitation activities.
6 CONTROLLING ACCESS AND MANAGING GRAZING As described in the 2014 Annual Biodiversity Report installation works to control access and manage grazing in the offset areas has been completed. During the reporting period contractors were engaged to undertake maintenance activities on access tracks, culverts, gates and fences. All livestock have continued to be excluded from the offset area with the exception of use for ‘crash grazing’ in preparation for revegetation activities following a field assessment by a qualified consultant.
7 WEED CONTROL AND MONITORING Greening Australia were contracted to undertake an initial weeds assessment of the offset area. The aim of the weed assessment was to assist in setting priorities and developing on-ground actions for weed control and is presented in the form of a mapping survey. The mapping survey provides reference to individual weed infestations within each vegetation management unit (VMU) for the biodiversity offset area. Each weed occurrence was allocated a priority ranking based on the species status i.e. noxious or agricultural, and the size and density of the infestation. The survey information contributed
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
to the development of a strategic approach to the control of priority weeds and allow contractors to locate infestations using the mapping files. Additionally, it will continue to assist in tracking weeds to gauge the effectiveness of control measures and the potential spread and future distribution.
Weed control activities were undertaken from October 2014 to April 2014 for the target species across all VMU’s within the offset areas. This was the second round of weed control activities in the offset areas. The trial revegetation works are now scheduled to be undertaken during Spring 2015 with the timing dependent on suitable weather conditions and rainfall. Pre-cultivation spraying will be undertaken in preparation for the revegetation works.
In April 2015 DCPL arranged a meeting the Great Lakes Council (GLC) weeds officer to determine appropriate methods for control of woody weeds within the Mammy Johnsons River Riparian Zone. Several management options will be trialed in 2015/16. Additionally, the GLC weeds officer discussed bio-control options for Giant Parramatta Grass. DCPL are currently liaising with GLC to undertake a trial of the GPG fungus in infestations on Yancoal properties in conjunction with DPI. An update on any progress will be provided in the 2016 report.
Success of weeds management has been monitored and documented in the Annual Monitoring of Landscape function and Vegetation Structure for the Duralie Biodiversity Offset Report 2014 (available in the DCM environment office). The annual LFA report will next be updated following trial revegetation works scheduled in Spring 2015.
8 FERAL ANIMAL CONTROL AND MONITORING Australian Museum Consulting (AMC) was commissioned to undertake the initial invasive animal survey, in accordance with Section 5.10 of the BMP. The objectives of the study was to determine the range of invasive animals that occur or are likely to occur within the DCM and offset areas and provide recommendations for invasive animal control.
During the reporting period a wild dog trapping program was undertaken in the area surrounding the Stratford Mine Site and broader region. No other feral animal control activities were undertaken. A subsequent survey will be untaken in 2015/16 to determine requirements for ongoing control measures.
9 NEST BOX PROGRAMME Australian Museum Consulting (AMC) was commissioned to implement the nest box programme as described in the BMP Section 5.4.2 and Section 6.4. The nest box programme consists of two main components:
Replacing 18 boxes specifically targeting the Squirrel Glider; and Replacing boxes on a like for like basis for any hollow bearing trees cleared during vegetation clearance operations (refer Section 3).
Implementation of the nest box programme requires installation of the boxes described above followed by monitoring and maintenance of the nest boxes. An annual nest box monitoring report was completed by AMC at the end of the second year of monitoring (March 2015) (full text available in the DCM environment office), the executive summary from the report is reproduced below.
“This report summarises the work undertaken in relation to the Nest Box Programme for the Duralie Offset Area between March 2014 and March 2015. Works undertaken and other milestones that took place during this period included half-yearly monitoring of 18 Squirrel Glider nest boxes in August 2014 and March 2015. Monthly monitoring of 106 additional nest boxes (Variation 1) was undertaken from
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
April to September 2014, followed by half-yearly monitoring in March 2015. During September 2014 an additional 45 nest boxes (Variation 2) were installed, and monthly monitoring was undertaken from October 2014 to March 2015.
During the monitoring of the Squirrel Glider nest boxes, the target species was recorded within one nest box. The Sugar Glider (Petaurus breviceps) was the only other vertebrate species recorded in these nest boxes. During the March 2015 surveys two nest boxes which have not previously shown signs of occupancy contained leaf nests. Subsequently, all 18 Squirrel Glider nest boxes have been occupied or showed signs of previous occupancy at some stage since their installation. In addition, European Bees (Apis mellifera) were recorded in one nest box, and caterpillars were observed foraging on and significantly reducing the leaf nest in another. This suggests that at least two of the nest boxes are not being utilised by vertebrates at this point in time.
Seventy-five of the 106 nest boxes installed during August 2013 were occupied or shown signs of occupation at some stage since their installation. This is an occupancy rate of approximately 71%, 18 months after installation. Eleven species were recorded in the nest boxes during the period relevant to this report. Four of these species have not previously been recorded during the Nest Box Programme, including the Brown Antechinus (Antechinus stuartii), Peron’s Tree Frog (Litoria peronii), Lace Monitor (Varanus varius) and Australian Wood Duck (Chenonetta jubata). The total number of species that have been recorded within these nest boxes since they were installed in August 2013 is now twelve.
Twenty-six of the 45 additional nest boxes installed in September 2014 were occupied or shown signs of occupation at some stage since their installation. This is an occupancy rate of approximately 58%, six months after their installation. Five species have been recorded utilising the nest boxes, the most common being the Common Brushtail Possum (Trichosurus vulpecula). Two species, the Australian Owlet-nightjar (Aegotheles cristatus) and the Feathertail Glider (Acrobates pygmaeus), have not previously been recorded within nest boxes during the Nest Box Programme.
There have been multiple incidences of changes in species occupancy within nest boxes over time. Some nest boxes have been occupied by up to three different species since installation, at different points in time. In one instance five changes of occupancy have been recorded between December 2013 and March 2015.
The majority of nest boxes were in good condition, with little maintenance required. Due to safety concerns at one tree the nest box was relocated to a nearby tree. A hive of European Honey bees was treated in one nest box and ant colonies were treated in three other nest boxes. A number of nest boxes showed signs of minor degradation such as splitting of the plywood on the lid and the brace plate. Three nest boxes showed more serious degradation that may influence the functionality of the nest boxes and will need to be addressed in the near future.”
10 VEGETATION MANAGEMENT UNIT (VMU) MONITORING To monitor the effectiveness of revegetation in the offset areas Green Australia was commissioned to undertake the baseline monitoring of Landscape Function Analysis (LFA) and vegetation structure in the offset area in February 2013. The baseline monitoring provides information to track the progression towards meeting the completion criteria of the BMP and includes the following 5 components:
Landscape Function Analysis; Vegetation structure analysis; Ephemeral drainage line assessment (select VMU’s only); Photo point monitoring; and Observational Recordings.
The annual vegetation and landscape function monitoring was repeated in May 2014 and the results are provided in the Annual Monitoring of Landscape function and Vegetation Structure for the Duralie Biodiversity Offset Report 2014 (available in the DCM environment office).
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Following the trial revegetation works scheduled in Spring 2015 the annual LFA monitoring will be undertaken again and include a review of the success of the trials. Recommendations from the review will be used to develop an operational plan for the full offset revegetation with the works scheduled to be undertaken during the Spring 2016.
11 BUSHFIRE MANAGEMENT Where possible fire will be excluded from the offset area during the first three years of management and revegetation. To assist with bushfire management access tracks have been constructed in the offset area as shown in the BMP Figure 9.
During spring of 2012 back-burning activities on an adjacent property to the east of the offset area caused a section of the offset to catch fire. The local RFS was called to assist with managing the fire. A section of the offset to the east of Johnson’s Creek Road along the Buckley’s Range was affected by the fire. During Spring 2013 another fire was observed starting to the east of the train load-out facility and burnt an area towards Mammy Johnson’s River.
DCPL have been in consultation with the local RFS to develop a hazard reduction burning plan for the offset areas and surrounding Yancoal owned property. Considerations have also been given to the proposed revegetation works in the Spring 2015 and utilising burning to assist in reducing biomass and manage weeds prior to seeding. The back burning plan is proposed to be implemented during July-August 2015. During the reporting period access tracks have also been maintained to assist with bushfire management.
12 MAMMY JOHNSONS RIVER STABILISATION In accordance with Section 6.8 of the BMP a detailed design for the in-stream rehabilitation of a severely eroded section of Mammy Johnsons River has been prepared by Alluvium (Mammy Johnson’s River –Bank Stabilisation Detailed Design 2013 electronic files available in DCM environment office). No works on the MJR bank stabilisation are scheduled for the coming reporting period.
13 LONG TERM SECURITY AND CONSERVATION BOND Long-term Security Further to the information provided in the 2014 Annual Biodiversity Report regarding the status of the public positive covenant registration: On 8 December 2014 DCPL requested an extension of the timing for securing the DCM offset area in perpetuity (i.e. via public positive covenants) until 30 June 2015 whilst the documents were still with DP&E for review. In a letter to DCPL dated 11 December 2014, the DP&E granted an extension of the timing for securing the offset area to 30 June 2015. On 18 December 2014 DCPL received advice from the DP&E that the Secretary of the Department has signed the 3 public positive covenants and 3 Restrictions on Use of Land instruments to secure the Duralie biodiversity offsets. On 8 January 2015 DCPL lodged the public positive covenant documents with the draft terms and conditions with the NSW Land and Property Information (LPI) office for registration. Registration was completed with NSW LPI during May 2015.
Conservation Bond The terms of the conservation bond in the form of a bank guarantee were approved by DP&E on 12 December 2013 and the bank guarantee has been subsequently provided to DP&E. No changes to the conservation bond were required as a result of the modification to the Duralie Extension Project Approval (08_0203) approved on 5 December 2015.
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
14 COMMONWEALTH APPROVAL COMPLIANCE REPORTS In accordance with the Commonwealth Approval [EPBC 2010/5396] during the reporting period DCPL have submitted to DotE:
DCM Implementation of the Giant Barred Frog Management Plan Annual Report 2014, submitted on 24 July 2014 (Condition 10); DCM Implementation of the Biodiversity Management Plan Annual Report 2015 on 8 January 2015 (Condition 14(i)); Duralie Coal Extension Project Annual Compliance Report 2015, submitted on 14 April 2015 (Condition 20).
These reports will continue to be submitted annually for the first five years following the commencement of the operation.
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Annual Biodiversity Report 13 July 2015 FOR THE YEAR ENDING 30 JUNE 2015
Appendix 1:
Duralie Coal Mine - Nest Box Replacement Requirements *Note: Accounts for vegetation clearance post approval of the amended NSW Project Approval 08_0203. i.e. 10 November 2011 *Note: July 2014 to June 2015 Location Habitat Features Fauna Observed Dimensions Tree Total Feature Width Dimensions Area Cleared Date cleared # Easting Northing # Feature Height (mm) Depth (m) Species Comments Hollows: 2 large, 4 medium, Southern Limb West 17/10/2014 2 399669 6427612 9 RH,LH 6-10 50-150 up to 1m Nil 3 small 10 399512 6427965 10 LH 10 <50 Only suitable for microbats Owl observed leaving hollow Whole tree 1 month prior to felling. Not 11 399389 6428174 1 LH 10 150 hollow observed on day of felling. 12 2 RH,LH 10 100 0.5m Nil 13 2 RH,LH 10 50-100 0.5m Nil
Key *Health: Live (L), Stag (S) *Isolation: Isolated (I), Sparse (S), Moderate (M), Dense Forest (D) *Diameter at Breast Height (DBH) *Features: Main stem hollow (MSH), Residual hollow (RH), Crown hollow (CH), Limb hollow (LH), Fissure (F), Nest (N)
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