Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers. Prepared for Kings Christian College HRP15381

Transcription

1 Due Stage Diligence 1 Environmental Assessment Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Insert Flat, job Queensland reference HRP15381 Prepared for Kings Christian College 3 February 2016

2 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Document Information Prepared for Project Name File Reference Job Reference Kings Christian College Anzac Avenue, Chambers Flat, Queensland I:\HRP Chambers Flat\wp\Report\Stage 1 ESA\Chambers Flat Contamination Assessment.doc HRP15381 Date 3 February 2016 Contact Information Cardno (Qld) Pty Ltd ABN Level 11 Green Square North Tower 515 St Paul s Terrace Locked Bag 4006 Fortitude Valley Qld 4006 Telephone: Facsimile: International: Document Control Version Date Description of Revision Author Initials Author Signature Reviewer Initials Reviewed Signature A 13/01/2016 Draft DB/JW CK 1 3/02/2016 Final DB/JW CK Version Reason for Issue / Stage of Deliverable Approver Initials Approved Signature Approved Release Date A Draft for Client Comment CK 13/01/ Final CK 3/02/2016 Cardno Copyright in the whole and every part of this document belongs to Cardno and may not be used, sold, transferred, copied or reproduced in whole or in part in any manner or form or in or on any media to any person other than by agreement with Cardno. This document is produced by Cardno solely for the benefit and use by the client in accordance with the terms of the engagement. Cardno does not and shall not assume any responsibility or liability whatsoever to any third party arising out of any use or reliance by any third party on the content of this document. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page ii

3 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Executive Summary A Stage 1 Environmental Site Assessment (ESA) was undertaken for a site located at Anzac Avenue, Chambers Flat, Queensland. The site is described as Lot 3 on RP (Refer to Figure 1). The investigation was undertaken on behalf of Kings Christian College to investigate and assess Areas of Potential Environmental Concern (APEC) based on historical use of the site for due diligence purposes. The following conclusions and recommendations can be made following this Stage 1 ESA: > The site was historically and currently undeveloped with the exception of the former residence and used for grazing purposes. > Potential contaminating activities at the site are limited to the former cattle dip, the miscellaneous storage of corrugated iron and the observed former stock yard area located on the southern boundary of Anzac Avenue, towards the south-east corner of the site. > The location of the cattle dip was indicated to be approximately where Anzac Avenue is currently located and is off-site but within the original parent lot. > The site is listed on the Environmental Management Register (EMR) for LIVESTOCK DIP OR SPRAY RACE operating a livestock dip or spray race facility. > The Data Quality Objectives (DQO) were generally met for the Stage 1 ESA. > Soil sampling was conducted on 8 th December 2015 by an environmental scientist representing Cardno. The intrusive investigation comprised of eleven borehole locations and selected soil analysis of one or more of the following: Organochlorine Pesticides and heavy metals. > Subsurface conditions during the intrusive investigation generally comprised silty sand overlying sandy clay and clays to up to 4.4 m below ground level (m bgl). No contamination markers were observed during the site walkover or drilling program. > The results from the limited analytical soil testing within the identified APEC reported exceedances of both ecological and health investigation levels (zinc and lead, respectively) for the proposed land use at one location from within APEC 2. This borehole was located within the miscellaneous storage of iron sheeting area and was collected from directly beneath in the surface soils. The presence of heavy metals within the surface soils is likely associated with the storage of iron sheeting at this location. > Heavy metals (lead and zinc) have the potential to pose a risk to environmental receptors and human health of site users. However, given the metals are likely associated with soils directly beneath the iron sheeting, the current site use (grazing only) of the site and likely depth to groundwater (>20 m bgl), these concentrations of lead and zinc are considered to pose a low environment and health risk. It is recommended that all corrugated iron from within APEC 2 be removed from site to an appropriate disposal facility. Further soil investigations from within this area following the removal of the corrugated iron is warranted to confirm potential residue risk. > Evidence of a former stock yard area was indicated during the site walkover along the southern boundary of Anzac Avenue, towards the south-east corner of the site where a concrete slab and old fence postings were observed. The presence of OCs or levels of heavy metals above the adopted investigation levels were not reported from within the former stockyard area. Therefore, we consider this area to present a low environmental and health risk. > The cattle dip was not located within site during this Stage 1 ESA and was indicated to have been part of the parent lot prior to subdivision. The cattle dip is believed to be located off-site in the vicinity of Anzac Avenue. > Based on the findings from this investigation, the site is currently considered suitable for residential land use or equivalent in its current state given the potential for human health risks to occur if access to soils is provided. Further soil investigations would be required to delineate potential contaminants and remove the site from the EMR. The further investigation would confirm the potential ecological and human health risks and required mitigation. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page iii

4 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Table of Contents Executive Summary 1 Introduction Objective Scope of Works Limitations 2 2 Site Description General Topography Geology and Soils Hydrology Hydrogeology Site Observations Sensitive Receiving Environments 4 3 Site History Historical Titles Environmental Management Register Aerial Photography Review Owner/Operator Discussions Summary of Site History 6 4 Areas of Potential Environmental Concern Potential Areas of Environmental Concern 7 5 Investigation Methodology Data Quality Objectives Sampling and Analysis Plan Sampling Methodology Quality Assurance and Quality Control Procedures (QA/QC) 9 6 Basis for Soil Assessment Criteria 10 7 Site Observations Soil Condition and Field Observations Soil Condition Site Condition 11 8 Analytical Results Laboratory Results Quality Assurance 12 9 Risk Assessment Areas of Potential Environmental Concern Preliminary Conceptual Site Model Discussion of Results Conclusions and Recommendations References 17 iii HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page iv

5 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Tables Table 2-1 Registered Bore Search for Lot 3 RP Table 3-1 Historical Title Search Results for Lot 3 RP Table 3-2 Historical Aerial Photograph Review 5 Table 4-1 Area of Potential Environmental Concern and Potential Contaminants of Concern 7 Table 5-1 Data Quality Objectives 8 Table 5-2 Sampling Locations and Rationale 9 Figures Figure 1 Site Location Appendices Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Site Photograph Title Searches And GW Bore Searches EMR Searches Borehole Logs Analytical Results Laboratory Results HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page v

6 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 1 Introduction Cardno (QLD) Pty Ltd (Cardno) has been commissioned by Kings Christian College to undertake a Stage 1 Environmental Site Assessment (Stage 1 ESA) at Anzac Avenue, Chambers Flat, Queensland (the site). The site is described as Lot 3 on RP (Refer to Figure 1) and covers a total area of approximately 17.3 hectares (ha). This Stage 1 ESA has been undertaken for due diligence purposes. The aim of the investigation is to undertake a Stage 1 ESA to assess potential soil contamination associated the site s previous uses as a rural property. The Stage 1 ESA has been undertaken in general accordance with the standard methodology as described in the Australian Standard Australian Standard Guide to the investigation of sites with potentially contaminated soils: Non-volatile and Semi-Volatile Compounds as well as the National Environmental Protection (Site Contamination) Measure 1999 as amended Objective The main objectives of this investigation include: > Determine any Areas of Potential Environmental Concern (APEC) based on site history review and site walkover; and > Assess any APEC by subsurface sampling to determine the absence/presence of contamination, and provide recommendations for further site investigations, site management or remediation, if required. 1.2 Scope of Works The scope of works for this Stage 1 ESA included: > Desktop investigation consisting of the following elements: - Site walkover to determine potential signs of contamination; - Discussions with previous operators/staff; - Search of Environmental Management Register (EMR) / Contaminated Land Register (CLR); - Review of historic aerial photographs of the site and surrounding area; - Review of land titles; - Review of any additional information provided by Kings Christian College; - Review of publicly available environmental, hydrogeological, geotechnical and mining related reports or information relating to the site; and - Development of a proposed Sampling and Analysis Plan (SAP) based on desktop information. The proposed sampling density was preliminary in nature and considered suitable to assess APEC. > Site Investigation consisting of the following: - Preparation of a Safe Work Method Statement (SWMS), Job Safety Analysis and Health and Safety and Plan; - Undertaking Dial Before You Dig notification; - Drilling of eleven boreholes to depths up to 4.4 m below ground level (m bgl) within identified APEC. Soil samples were collected at selected locations based on soil observations, however were generally collected at 0.5 m intervals; - Submission of soils samples to National Association of Testing Authorities (NATA) accredited laboratory for analytical testing under a complete Chain of Custody (COC) system; - Analysis of samples for selected Potential Contaminants of Concern (pcoc) including one or more of the following: HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 1

7 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland > Organochlorine Pesticides (OCs); and > Heavy metals (arsenic, cadmium, chromium, copper, lead, mercury, nickel, zinc). > Preparation of a Stage 1 ESA report. 1.3 Limitations This report has been prepared by Cardno for the purpose of a due diligence assessment for potential contamination risks associated with the site. The report has been prepared in accordance with the generally accepted professional engineering and environmental practice and standards of care in the area where these services are rendered. The findings presented in this report have been based on the investigation described herein, which was undertaken in general accordance with Australian Standard and Queensland Department of Environment and Heritage Protection (EHP) Guidelines. The findings and conclusions given in this report are based on site conditions unique to the project and applicable Government regulations that existed at the time the environmental investigation was conducted and the report prepared. Sampling locations were judgemental and are representative of conditions at the tested locations only. Therefore this investigation is not representative of conditions outside of these areas. This report as a whole presents the findings and conclusions drawn from the limited intrusive investigation, and must be read in its entirety. Decisions should not be made on the basis of this report if the adequacy of the report has been affected by time. Cardno shall not be liable for the contents of this report where the client has failed to consider the entirety of this report and the underlying evaluation, and failed to re-evaluate report conclusions as the project progresses. In the above circumstances the client relies on this report at their own risk. Cardno disclaims any responsibility for claims or damages arising out of the client s use of this report for anything other than the purposes given in the report. The investigation is limited in nature and a judgemental approach to sampling was used. A more detailed site investigation would be recommended if the site was to be removed from the EMR. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 2

8 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 2 Site Description 2.1 General The site is located at Anzac Avenue, Chambers Flat, Logan City and is described as Lot 3 on RP (Refer to Figure 1). The site is located in a rural setting and is approximately 1 km southwest of Logan village. The site covers an area of approximately 17.3 ha of undeveloped rural land and is located on the northern bank of the Logan River and is situated in the Logan-Albert catchment. The site is bound to the north by Anzac Avenue, the north-west by a neighbouring property, and the southwest to the east by the Logan River. The adjoining property to the north-west and property opposite to the north comprise of a mix of agricultural land-use, associated dwellings and infrastructure. These properties, along with the site, are located within the rural zone of the Logan Planning Scheme Development is occurring to the east, south, and west of the site on the opposite side of the Logan River in the low-density residential zone. A selection of site photographs are presented in Appendix A. 2.2 Topography The site is an undulating pasture block with a major gully traversing the site from the eastern boundary to the west, to approximately mid-way through the site. The site features elevation ranging from sea level at the Logan River to 10-20m across the majority of the site. The highest point is located near the western boundary at a height of 29m. 2.3 Geology and Soils The 1: series geological map (Sheet 9542, Geological Survey of Queensland, Beenleigh) was reviewed to determine the geology underlying the site. The map indicated that the site is underlain by Quaternary aged Alluvium, comprising mainly clay, silt, sand and gravel. 2.4 Hydrology The closest natural surface water body is the Logan River following the site boundary to the east, west and south. The Logan River discharges to the Canaipa Passage (approximately 25km north east of the site). A small dam is located within the site along the northern boundary south of the dirt access road. An unnamed dam is located approximately 120m north of the site located on neighbouring property Lot 2 RP Hydrogeology A search of the Department of Natural Resources and Mines (DNRM) Groundwater Database was conducted. The search indicated that there are three registered groundwater bores within 1km radius of the site and are summarised in Table 2-1 below. Table 2-1 Registered Bore Search for Lot 3 RP Registered No. Distance Direction Status Comment m West Abandoned and Destroyed m West Abandoned and Destroyed Conductivity: 1570 µs/cm, Yield: 0.10 l/s m North West Used for water supply SWL m Yield 0.70 l/s The borehole reports indicate that the groundwater table is located at approximately 25 m bgl and the electrical conductivity values measured indicate fresh to brackish. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 3

9 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 2.6 Site Observations A site walkover was carried out on 8 December The site is accessed by a dirt road located on the south side of Anzac Avenue. The site is currently used for grazing and is vacant of any buildings at the time of the walkover. The site is an undulating pasture block with a major gully traversing the site from the eastern boundary to the west, to approximately mid-way through the site. One small dam is located in the north-east portion of the site adjacent to Anzac Avenue with a constructed bund wall. The boundaries of the site located on the Logan River are vegetated at a medium density mix of young to mature native species, with a mixed native and exotic pasture ground cover. Several mature native tree species are located across the block, with planted mature trees at a past infrastructure site representing a legacy of occupation. Miscellaneous storage of iron was observed across the ground where the former house residence was located approximately 150 m west of Anzac Avenue. Evidence of a former stock yard area was observed along the eastern boundary where a concrete slab and old fence postings were noted. The current site layout is shown in Figure 1, while photographs taken during the site walkover are provided in Appendix A. 2.7 Sensitive Receiving Environments The site conditions as presented above were reviewed to provide an indication of the overall issues, sensitive areas and receptors likely present on the site in the event that contamination is encountered. Based on the above review the following sensitive receiving environments and receptors would require consideration in the event that a source of contamination is encountered. > Site soils across the site; > Surface water bodies located at the site; > Groundwater users at properties adjacent to the site; > Groundwater flowing beneath the site and stormwater discharge locations; > Adjacent property users in the event of stormwater flows or contaminant migration to adjacent properties; and > Site occupiers including construction workers engaged in soil handling. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 4

10 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 3 Site History 3.1 Historical Titles Title searches can assist in identifying previous owners of the site and historical land use. The results are summarised in Table 3-1. The results confirm the dates of the ownership/lease changes for the site, however do not provide additional information regarding potentially contaminating activities. The title searches are shown in Appendix B. Table 3-1 Title Historical Title Search Results for Lot 3 RP Current Title (Lot 3 on RP863054) 10/10/1994 to Current Results Owner: John Jonathan Nevell, John Michael Nevell, Jeffrey Robert Nevell, Mark David Nevell, James Kevin Nevell Historical Title (Ref: Lot 2 on RP25896) 09/04/1987 to 10/10/1994 Deed of Grant (22/09/1862) Portion 79 Owner: Details Provided Previous Lot 2 on RP25896 (parent lot) subdivided into Lots 2 and 3 on RP Owner: William Kirk 3.2 Environmental Management Register A search of the EMR and CLR was conducted on 3 December 2015 and indicated: > The site is included on the EMR for a notifiable activity or hazardous contaminant : - LIVESTOCK DIP OR SPRAY RACE operating a livestock dip or spray race facility. > The site is NOT included on the CLR. The records advise that the site has been subdivided from Lot 3 RP which is included on the EMR. As the site had been subdivided from a property subject to a notifiable contaminating activity, it remains on the register until such time that it can be shown that it will not result in environmental harm. A copy of this search is provided in Appendix C. EHP is the lead agent for environmental protection. The Environmental Protection Act 1994 (EP Act) requires that all persons have a general environmental duty to take all reasonable and practical measures to prevent or minimise Environmental harm. Activities identified as being likely to cause contamination are listed as Notifiable Activities under Schedule 3 of the EP Act. Common land uses which can cause contamination (Notifiable Activities) include, for example, service stations, cattle dips, tanneries, wood treatment sites, landfills, fuel storage and refuse tips. It is a requirement of the EP Act that EHP be informed of any land used for Notifiable Activities or contaminated by hazardous contaminants. The EMR is a land use planning and management register that records land that has been used for a Notifiable Activity or land that has been contaminated by hazardous contaminants which pose or are suspected to pose a risk to human health and the environment based on their history. The CLR is a register of known risk sites which have been scientifically proven to be contaminated and actions are required to either remediate or manage the site to reduce the risk of causing harm to human health and the environment. 3.3 Aerial Photography Review A review of historical aerial photographs relating to the site was undertaken to provide supporting evidence of the past and present land uses and activities undertaken at the site and surrounding areas. A summary of the aerial photograph review is presented in Table 3-2. A copy of selected aerial photographs are provided in Appendix B. Table 3-2 Historical Aerial Photograph Review Photograph Name Year Photograph Description (incl. Site and Surrounding Details) HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 5

11 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Photograph Name Year Photograph Description (incl. Site and Surrounding Details) QAP The site and surrounding land appears to be general grazing land. There are some trees alongside the river, with very little vegetation present within the centre of the Lot. A building, comprised of four sections, is located within the centre of the Lot. A dam is also evident to the south of the building. QAP This photo is similar to the above. QAP This photo is similar to the above. Increased vegetation presence is noted along the river bank and some presence within the Lot. It appears that some of the buildings have been removed and only one component of the structure remains. QAP The building present within the Lot appears to have been removed, though one small building is still present. The Lots to the north and west of the Site have gained new buildings. The site is still predominantly clear of vegetation and appears to be used for grazing purposes. QAP The site is predominantly clear of vegetation. The building present within the Site has been significantly reduced in size. QAP This photo is similar to the above. QAP Anzac Road has been constructed since the1993 aerial photograph, and runs from the northwest corner of the site to the east of the site, crossing the Logan River. The remainder of the site is still predominantly clear of vegetation, and the small building in the centre of the lot is still present. Google Earth 2003 The site contains Anzac Road, and is predominantly clear of vegetation. The small building that was previously located in the centre of the site has been removed since No infrastructure, apart from Anzac Road, is present within the Site. Google Earth 2015 The photo is similar to above. The following comments are made in relation to the aerial photograph review for the site. > The site appeared to be historically undeveloped with the exception of a house residences and used for stock grazing. > The construction of Anzac Avenue after 1993 formed the current site boundary. 3.4 Owner/Operator Discussions Kings Christian College was asked to provide relevant environmental information relating to the site. The owner s solicitor (Mr. Jeffrey Nevell) was interviewed for the purpose of this investigation. The following information from was noted: > Mr. Nevell indicated that a former cattle dip was historically located 20 to 30 metres from the small dam located towards Logan River. It is understood that the cattle dip was located off-site where Anzac Avenue is currently situated. > No other potential contaminating activities were known to have occurred at the site. > The site has been historically and currently used for grazing purposes. 3.5 Summary of Site History The site mainly appeared to be historically and currently undeveloped with the exception of the former residence and used for grazing purposes. Therefore the activities to be considered in relation to potential sources of contamination from the site history are limited to the former cattle dip and the miscellaneous storage of corrugated iron. It appears that the location of the cattle dip was approximately where Anzac Avenue is currently located and is located off-site but within the original parent lot. The observed former stock yard located along the eastern boundary of Anzac Avenue should also be considered to have the potential for soil contamination. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 6

12 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 4 Areas of Potential Environmental Concern 4.1 Potential Areas of Environmental Concern Based on the review of the site characteristics, site walkover information and historic documentation in Sections 2 and 3, the APEC for the site are outlined in Table 4-1 below. The locations of the inferred stock yard area is shown in Figure 1. Table 4-1 Area of Potential Environmental Concern and Potential Contaminants of Concern APEC Source/Issue Potential Contaminants of Concern 1 Former stock yard area Arsenic, Organochlorine pesticides 2 Miscellaneous storage of corrugated iron Heavy metals 3 General Coverage with Proposed Building Footprint Heavy metals and Organochlorine pesticides HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 7

13 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 5 Investigation Methodology The investigation methodology was undertaken in accordance with the following guidelines: > Guidelines for contaminated land professionals, Department of Environment and Heritage Protection (EHP), 2014; and > National Environment Protection (Assessment of Site Contamination) Measure (NEPM) 2013; and Australian Standard AS Guide to the investigation and sampling of sites with potentially contaminated soil - Part 1: Non-volatile and semi-volatile compounds and Part 2: Volatiles substances. 5.1 Data Quality Objectives Data Quality Objectives (DQOs) for the investigation have been tabulated based on the aims of the investigation. These DQOs are presented in Table 5-1. Table 5-1 State the Problem Identify the Objective Data Quality Objectives Identify Inputs to the Objective Define the Study Boundaries Develop the Analytical Approach Specify Performance or Acceptance Criteria Optimise the Design for Obtaining Data 5.2 Sampling and Analysis Plan The investigation is required to establish potential risks associated with concentrations of potential contaminants associated with the historical use of the site. Potential contaminants were organochloride pesticides and heavy metals. To obtain adequate data to identify the presence (if any) of contamination associated with the historical use of the site for grazing purposes. To enable an assessment of human and ecological health risk. Soil data is required to identify contamination around the proposed school building footprint. The study area was limited to the area identified within the proposed school building footprint, former residence area and former stock yard area within the site. Soil to depths up to 1.0 m bgl will be sampled and analysed. However, the implications of soil contamination (if exists) within these areas on surface water and groundwater will be taken into consideration. Categorisation of any soil contamination will be considered for the proposed development of the site. To determine onsite contamination and provide evidence whether contamination within the areas of concern is acceptable for the land use based on NEPM 2013 guidelines. If unacceptable then further delineation and remediation actions will be required. To provide evidence that currently there is no migration off site of contaminants or if there are identify potential pathways and receptors. Data validation by in-house review and sampler and laboratory QA/QC checks. Calculation of relative percentage differences (RPD) for error identification in sampling laboratory and field sampling processes (<50% achievement). Review of QA/QC processes and results relative to recommended legislative criteria. The investigation has been designed in a manner to best satisfy project requirements: timeframes, budgets and data quality. A targeted judgemental approach has been adopted to select sampling locations and density. Sampling locations were selected based on visual observations and within the proposed school building footprint, former residence area and former stock yard area within the site. Sampling locations were selected based on the site history and initial site walkover. Precise sample locations were determined based on visual observations and avoided any potential underground wires or cables. A summary of the locations and sampling methodology are presented in Table 5-2. Refer to Figure 1 for sample locations and Appendix A for photographs. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 8

14 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Table 5-2 Sampling Locations and Rationale Location Rationale Samples and Depths Analysis Former stock yard area Potential contamination from historical use as a stock yard. Four borehole locations (BH6, BH6-S1 and BH6-S2, BH6-S3) were drilled to depths up to 4.4 m bgl. Heavy metals and Organochlorine Pesticides Samples were collected generally every 0.5 m to a depth up to 1.0 m bgl. Miscellaneous storage of corrugated iron Potential contamination from the storage of corrugated iron. Three borehole locations (BH1, BH1- S1 and BH1-S2) were drilled to depths up to 3.5 m bgl. Heavy metals Samples were collected generally every 0.5 m to a depth of 1.0 m bgl. General Coverage within Proposed Building Footprint General coverage and to observed subsurface conditions for geotechnical purposes. Low risk for contamination in this area. Four borehole locations (BH2, BH3, BH4 and BH5) were drilled to depths up to 3.7 m bgl. Samples were collected generally every 0.5 m to a depth of up to 1.0 m bgl. Organochlorine Pesticides 5.3 Sampling Methodology Eleven boreholes were drilled during this Stage 1 ESA at locations based on APEC. Boreholes were drilled using a Geoprobe drilling rig. Samples were collected to a maximum depth of 1.0 m bgl. > Soil samples were collected on 8 December 2015 by an experienced environmental scientist with the use of a Geoprobe to extract undisturbed soil cores. > Samples were collected at eleven locations at selected sampling depths based on natural soil and observations noted during drilling. > A DBYD was conducted prior to underground service clearing. To avoid cross-contamination samples were collected directly from the Geoprobe tubes and placed directly in laboratory supplied sterilised jars using a fresh pair of powder free nitrile gloves for each sample to avoid cross contamination. > Visual assessments of any contamination markers and observations of the soil type encountered were noted. > All samples were labelled accordingly and placed directly in a chilled cooler box and transported to an ALS Environmental laboratory under chain-of-custody documentation on the day of sampling. ALS is certified by NATA as accredited for the tests performed. > All unused soil exhumed was replaced to ensure minimal disturbance of the surface soil. 5.4 Quality Assurance and Quality Control Procedures (QA/QC) Cardno maintained a QA/QC standard protocol for the environmental sampling. One blind QA/QC sample collected on-site was analysed at the laboratory. Comprehensive decontamination of all sampling equipment was undertaken at each sample location and a fresh pair of disposable nitrile gloves was used for collecting each soil sample to prevent cross-hole contamination. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 9

15 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 6 Basis for Soil Assessment Criteria The current land use for the site is rural, while the proposed land use is for an educational establishment. Therefore the adopted assessment criteria require a consideration of residential use (being the equivalent sensitivity of an education establishment accommodating children). A conservative approach has been adopted with regard to consideration of environmental and human health risk. The assessment results and outcomes have been considered with regard the following guideline: > National Environment Protection (Assessment of Site Contamination) Measure (NEPM 2013). The guideline values adopted for this assessment from NEPM 2013 where relevant are listed below: > Soil Health Investigation Levels (HIL) for Residential land use (HIL A). > Soil Ecological Investigation Levels (EILs) for urban residential/public open space. Comparison against these criteria was used to determine the suitability of soils for the current and proposed land use and for potential disposal options for impacted soils (if required). HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 10

16 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 7 Site Observations 7.1 Soil Condition and Field Observations A summary of field observations and soil conditions is described below. A selection of Photographs at the time of inspection is shown in Appendix A. 7.2 Soil Condition The subsurface conditions encountered at the borehole locations were consistent with the published geology. The investigation indicated variable subsurface conditions. In general up to 0.2 m of silty sand was underlain by natural silty sands and sandy silty clay of soft consistency to an average depth of 1.0 m bgl. These materials were underlain by stiff sandy clay / clay/ sandy silt grading too hard to the maximum depth of the investigation (up to 4.4 m bgl). At BH6 a 0.6 m thick layer of sand was encountered at 2.5 m bgl. Auger refusal was achieved at BH4 and BH4 at 1.7 m and 2.2 m, respectively. No staining, hydrocarbon odours or asbestos containing material was observed from any of the samples collected. Groundwater was not encountered in any of the six borehole locations which were drilled to a maximum depth of 4.4 m bgl. Further details on the material encountered are provided in borehole logs (Appendix D). 7.3 Site Condition The following notes were made during the site inspection: > Miscellaneous storage of iron sheeting; > A concrete pad approximately 3 x 7 m with some old fence posts were observed along the north boundary; > No waste historical filling is evident on site; > No staining, evidence of disturbance or contamination was observed on site or in the vicinity; > No chemical or petrochemical storage was observed; and > No dangerous goods were observed on site. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 11

17 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 8 Analytical Results 8.1 Laboratory Results The analytical results are summarised in Appendix E (Table 1). The full laboratory documentation is presented in Appendix F. Thirty three soil samples from eleven borehole locations were taken during the Stage 1 ESA. Twelve soil samples, including one blind duplicate sample (QC02) were selected for laboratory analysis. All of the samples analysed for heavy metals and OCs were generally below the adopted investigation guidelines with the exception of the following: > BH1-S m reported a zinc concentration (636 mg/kg) above the adopted EIL. > BH1-S m reported a lead concentration (569 mg/kg) above the adopted HIL A. 8.2 Quality Assurance One blind replicate sample (QC02) was collected and submitted to the laboratory for analysis. The total number of QA samples meets the DQO. The primary sample (BH ) and blind replicate were taken from the same location in an attempt to achieve sample homogeneity. The calculated RPD difference between the primary and duplicate sample, are presented in Table 2 within Appendix E. Analytical results and relative percentage difference (RPD) calculations indicated the result was within acceptable limits for the investigation (50%), thereby demonstrating the integrity of the sampling method, while giving due consideration to the likelihood of sample heterogeneity. Given the above, analytical results can be considered reproducible and representative of actual soil sample concentrations and are considered suitable for the purpose of this Stage ESA report. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 12

18 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 9 Risk Assessment 9.1 Areas of Potential Environmental Concern A qualitative risk assessment was undertaken to prioritise the identified APEC. The site was risk ranked according to site observations and analytical results. The review of activities onsite provides a clear prioritisation of the contamination issues faced in each respective APEC in terms of delineating low, medium and high risk priority to the health and ecological of onsite, surrounding areas and future users. The risk priority ranking (Table 9-1) has been formulated based on the following: Table 9-1 Risk Priority Ranking Risk Action Low Medium High Further Action Investigations identified a low to no potential for contamination to occur. Based on the information collected, limited further works will be required. Very limited anticipated risk to surrounding users. Identifies areas where an activity has occurred and has the potential to cause contamination. Includes areas where the desktop assessment delineated sources of contamination and where site history indicates that the site has been remediated, but there may be outstanding issues. There are potential contaminates of concern that may remain at levels exceeding the adopted environmental and health criteria limits as outlined within appropriate legislation and policy guidelines. Reasonable assurance contaminates of concern have been identified and may continue to spread/increase, with the risk considered high to surrounding users. Immediate attention is required. Using the information obtained during the desktop study, site inspection, and intrusive investigation, a number of APEC have been identified. Table 9-2 provides a breakdown of the APEC and assessed risk as per Table 9-1. Table 9-2 Areas of Potential Environmental Concern Risk Priority Ranking APEC APEC 1 - Former Stock Yard Area Potential Contaminants of Concern/Extent No exceedance of adopted guidelines for heavy metals or OCs Probably Risks Low Risk to both human health and the environment based on site observations and analytical results. APEC 2 Miscellaneous storage of corrugated iron APEC 3 - General Coverage with Proposed Building Footprint Lead HIL A exceedance Zinc EIL A exceedance No exceedance of the adopted guidelines have been identified Low Risk Heavy metals (lead and zinc) have the potential to pose a risk to environmental receptors and human health of site users. However, given the metals are likely associated with soils directly beneath the iron sheeting and the current site use (grazing only) and likely depth to groundwater (>20 m bgl), these concentrations of lead and zinc are considered to pose a low risk to the environmental and health risk in the site current state. Low Risk to both human health and the environment based on site observations and analytical results. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 13

19 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 9.2 Preliminary Conceptual Site Model A preliminary Conceptual Site Model (CSM) is a tool used in the determination of the potential risk to human health and/or the environment as a result of soil and/or groundwater conditions. An assessment is undertaken to identify the likely presence or absence of the following elements: > Source - a substance that is capable of causing an unacceptable risk to human and/or environmental health; > Pathway - a mode or route by which the substance/source can migrate to a receptor; and > Receptor - someone and/or something that could be adversely affected by the substance/source. For instances where one or more of these elements are absent, there cannot be an unacceptable risk to human and/or environmental health. Where all of these elements are present, a complete or potentially complete pathway for contamination exists and there is a potential risk to human and/or environmental health that will require further investigation and possible remediation and/or management. The magnitude of the risk is primarily a function of the concentration, mobility and physico-chemical properties of the source, the sensitivity of the receptor and the nature of the migration pathway Potential Contamination Sources The potential sources of the identified contamination within the APECs include the following: > Storage of corrugated iron (APEC 2) Potential Contamination Pathways Soil There is a potential for subsurface soil contamination migration from within APEC 2. Also risk to on-site work users through direct contact exists also with in APEC Surface Water There is potential for contaminated storm water runoff across the site during heavy rain events. This would tend to concentrate at the low points of the site. The nearest surface water receptor is the small dam located approximately 100 m south of APEC Groundwater Depth to groundwater is expect to be greater than 25m/bgl based on nearby registered groundwater bore records. The depth to groundwater at the site is currently unknown Receptors The nearest surface water receptor is the small dam located 100 m south of APEC 2. Rural residential properties exist 300 m to the northwest and north east of the site Summary For a risk to the environment or human health to exist there must a contaminant source and a pathway to the receptor. Potential pathways to receptors identified include: > Between the subsurface soil and direct contact from on-site users; and > Potential for migration of contamination through surface water runoff and shallow groundwater flow into onsite surface water receptors. Therefore sampling to identify soil conditions and possible contaminant sources was warranted. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 14

20 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 10 Discussion of Results A discussion and interpretation of results is presented below: > No contamination markers were observed during the site walkover and/or the drilling investigation at the site. > All analysed soil samples were below the adopted investigation levels with the exception of one location (BH1-S2) where lead above the HIL A and zinc above the EIL were reported. This borehole was located within the miscellaneous storage of iron sheeting area and was collected from directly beneath in the surface soils. The presence of heavy metals within the surface soils is likely associated with the storage of iron sheeting at this location. > Heavy metals (lead and zinc) have the potential to pose a risk to environmental receptors and human health of site users. However, given the metals are likely associated with soils directly beneath the iron sheeting, the current site use (grazing only) of the site and likely depth to groundwater (>25 m bgl), these concentrations of lead and zinc are considered to pose a low environment and health risk. > Evidence of a former stock yard area was indicated during the site walkover along the site boundary within the south-east corner of the site where a concrete slab and old fence postings were observed. The presence of OCs or levels of heavy metals above the adopted investigation levels were not reported from within the former stockyard area. Therefore, we consider this area to present a low environmental and health risk. > The cattle dip was not located within site during this Stage 1 ESA and was indicated to have been part of the parent lot prior to subdivision. The cattle dip is believed to be located off-site in the vicinity of Anzac Avenue. > Given the site is listed on the EMR, further investigations will be required to remove the site from the EMR. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 15

21 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 11 Conclusions and Recommendations A Stage 1 ESA was undertaken for a site located at Anzac Avenue, Chambers Flat, Queensland. The site is described as Lot 3 on RP (Refer to Figure 1). The investigation was undertaken on behalf of Kings Christian College to investigate and assess APEC based on historical use of the site for due diligence purposes. The following conclusions and recommendations can be made following this Stage 1 ESA: > The site was historically and currently undeveloped with the exception of the former residence and used for grazing purposes. > Potential contaminating activities at the site are limited to the former cattle dip, the miscellaneous storage of corrugated iron and the observed former stock yard area located on the southern boundary of Anzac Avenue, towards the south-east corner of the site. > The location of the cattle dip was indicated to be approximately where Anzac Avenue is currently located and is off-site but within the original parent lot. > The site is listed on the EMR for LIVESTOCK DIP OR SPRAY RACE operating a livestock dip or spray race facility. > The DQO were generally met for the Stage 1 ESA. > Soil sampling was conducted on 8 th December 2015 by an environmental scientist representing Cardno. The intrusive investigation comprised of eleven borehole locations and selected soil analysis of one or more of the following: OCs and heavy metals. > Subsurface conditions during the intrusive investigation generally comprised silty sand overlying sandy clay and clays to up to 4.4 m bgl. No contamination markers were observed during the site walkover or drilling program. > The results from the limited analytical soil testing within the identified APEC reported exceedances of both ecological and health investigation levels (zinc and lead, respectively) for the proposed land use at one location from within APEC 2. This borehole was located within the miscellaneous storage of iron sheeting area and was collected from directly beneath in the surface soils. The presence of heavy metals within the surface soils is likely associated with the storage of iron sheeting at this location. > Heavy metals (lead and zinc) have the potential to pose a risk to environmental receptors and human health of site users. However, given the metals are likely associated with soils directly beneath the iron sheeting, the current site use (grazing only) of the site and likely depth to groundwater (>20 m bgl), these concentrations of lead and zinc are considered to pose a low environment and health risk. It is recommended that all corrugated iron from within APEC 2 be removed from site to an appropriate disposal facility. Further soil investigations from within this area following the removal of the corrugated iron is warranted to confirm potential residue risk. > Evidence of a former stock yard area was indicated during the site walkover along the along the southern boundary of Anzac Avenue, towards the south-east corner of the site where a concrete slab and old fence postings were observed. The presence of OCs or levels of heavy metals above the adopted investigation levels were not reported from within the former stockyard area. Therefore, we consider this area to present a low environmental and health risk. > The cattle dip was not located within site during this Stage 1 ESA and was indicated to have been part of the parent lot prior to subdivision. The cattle dip is believed to be located off-site in the vicinity of Anzac Avenue. > Based on the findings from this investigation, the site is currently considered suitable for residential land use or equivalent in its current state given the potential for human health risks to occur if access to soils is provided. Further soil investigations would be required to delineate potential contaminants and remove the site from the EMR. The further investigation would confirm the potential ecological and human health risks and required mitigation. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 16

22 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland 12 References > Australian Standard Guide to the Investigation and Sampling of Sites with Potentially Contaminated Soil. > Department of Environment and Heritage Protection (EHP) 2012, Guidelines for Contamination Professionals. > NEPC, 2013, Variation National Environment Protection (Assessment of Site Contamination) Measure (NEPM), National Environmental Protection Council. > NEPC, 1999, National Environment Protection Measure, Schedule B1, Investigation Levels for Soil and Groundwater, National Environmental Protection Council. HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 17

23 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland FIGURES Figure 1 Site Location HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 18

24 RN ANZAC AVENUE RN RN BH1 BH6 See inset for details BH6-S2 BH6-S1 Inset Scale 1:200 LEGEND Site boundary BH RN Sample location Registered borehole DATE PLOTTED: 10 December :52 PM BY : JAMES MARTIN CAD File: I:\HRP Chambers Flat\Acad\Figure 1 - Site locality map.dwg Brisbane Tel: Cardno Limited All Rights Reserved. This document is produced by Cardno Limited solely for the benefit of and use by the client in accordance with the terms of the retainer. Cardno Limited does not and shall not assume any responsibility or liability whatsoever to any third party arising out of any use or reliance by third party on the content of this document. KINGS CHRISTIAN COLLEGE CHAMBERS FLAT CHAMBERS FLAT DUE DILIGENCE ASSESSMENT SITE LOCALITY MAP Date Scale 09/12/2015 1:2,500 FIGURE 1 Drawing Number Size A3 A Revision

25 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland APPENDIX A Site Photograph HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 19

26 Photograph Appendix A Photograph 1: View of Anzac Avenue facing north Photograph 2: View of Anzac Avenue facing east Photograph 3: View of Anzac Avenue facing northwest Photograph 4: View of miscellaneous corrugated iron storage facing northeast Photograph 5: View of stockyard area facing northeast Photograph 6: View of Logan River located on the site boundary

27 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland APPENDIX B Title Searches And GW Bore Searches HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 20

28 DATE 09/12/2015 GROUNDWATER DATABASE Page 1 of 4 BORE REPORT REG NUMBER REGISTRATION DETAILS BASIN 1450 LATITUDE OFFICE Brisbane SUB-AREA LONGITUDE DATE LOG RECD SHIRE 4590-LOGAN CITY EASTING D/O FILE NO. LOT 24 NORTHING R/O FILE NO. PLAN RP ZONE 56 H/O FILE NO. ORIGINAL DESCRIPTION ACCURACY GPS ACC GIS LAT PARISH NAME 2968-MACKENZIE GIS LNG COUNTY STANLEY CHECKED Y FACILITY TYPE Sub-Artesian Facility DATE DRILLED 08/12/2003 STATUS Existing DRILLERS NAME RITTER, MAX THOMAS ROLES WS DRILL COMPANY AARMAX DRILLING METHOD OF CONST. ROTARY AIR MAP-SCALE MAP-SERIES MAP-NO MAP NAME PROG SECTION PRES EQUIPMENT ORIGINAL BORE NO BORE LINE - POLYGON RN OF BORE REPLACED DATA OWNER CASING DETAILS PIP E DATE RECORD NUMBER MATERIAL DESCRIPTION MAT SIZE (mm) SIZE DESC OUTSIDE DIAM (mm) TOP (m) BOTTOM (m) A 08/12/ Polyvinyl Chloride WT A 08/12/ Perforated or Slotted Casing AP A 08/12/ Gravel Pack GR A 08/12/ Cuttings or other fill between casing and ho A 08/12/ Grout STRATA LOG DETAILS RECORD NUMBER STRATA TOP (m) STRATA BOT (m) STRATA DESCRIPTION TOP SOIL CLAY BROWN SANDSTONE CLAY

29 DATE 09/12/2015 GROUNDWATER DATABASE Page 2 of 4 BORE REPORT REG NUMBER RECORD NUMBER STRATA TOP (m) STRATA BOT (m) STRATA DESCRIPTION BROWN SANDSTONE GRAY SANDSTONE WHITE SANDSTONE * GRAY SANDSTONE STRATIGRAPHY DETAILS **** NO RECORDS FOUND **** AQUIFER DETAILS REC TOP BED(M) BOTTOM BED(M) BED LITHOLOGY DATE SWL (m) FLOW QUALITY YIELD (l/s) CTR CONDIT FORMATION NAME SDST 08/12/ N POTABLE 0.70 Y PS WOOGAROO SUBGROUP PUMP TEST DETAILS PART 1 PIPE DATE REC RN OF NO. PUMP-BORE TOP (m) BOTTOM (m) DIST (m) METH TEST TYPES PUMP TYPE SUCTION SET (m) Q PRIOR TO TEST (l/s) DUR OF Q PR (min) PRES ON ARRIV (m) Q ON ARRIV (l/s) A 08/12/ PUM AIR PUMP TEST DETAILS PART 2 PIP E DATE REC TEST DUR (mins) SWL (m) RECOV. TIME (mins) RESID. DD (m) MAX DD or P RED (m) Q at MAX DD (l/s) TIME TO MAX DD (mins) Max Q (l/s) CALC STAT HD (m) DESIGN YIELD (l/s) DESIGN BP (m) SUCT. SET (m) TMSY (m2/day) STOR A 08/12/ BORE CONDITION **** NO RECORDS FOUND **** ELEVATION DETAILS **** NO RECORDS FOUND **** WATER ANALYSIS PART1

30 DATE 09/12/2015 GROUNDWATER DATABASE Page 3 of 4 BORE REPORT REG NUMBER **** NO RECORDS FOUND **** WATER ANALYSIS PART 2 **** NO RECORDS FOUND **** WATER LEVEL DETAILS **** NO RECORDS FOUND **** WIRE LINE LOG DETAILS **** NO RECORDS FOUND **** FIELD MEASUREMENTS **** NO RECORDS FOUND **** SPECIAL WATER ANALYSIS **** NO RECORDS FOUND ****

31 DATE 09/12/2015 GROUNDWATER DATABASE Page 4 of 4 BORE REPORT User Licence for digital data Permitted use: - You may use the supplied data for your own purposes (including supply to consultants for a specific consultancy project for you but the consultants must return or destroy the supplied data when the project is finished). You must not sell or distribute the supplied data. - You must display this copyright notice on any copies of the supplied data however altered, reformatted or redisplayed if you supply to a consultant or copy for back up purposes: The State of Queensland (Department Natural Resource and Mines) You may create and distribute hardcopy and digital products based on or containing the supplied data, provided all the following conditions are met: - You must display this acknowledgment on the product(s): Based on or contains data provided by the State of Queensland (Department of Natural Resource and Mines) In consideration of the State permitting use of this data you acknowledge and agree that the State gives no warranty in relation to the data (including accuracy, reliability, completeness, currency or suitability) and accepts no liability (including without limitation, liability in negligence) for any loss, damage or costs (including consequential damage) relating to any use of the data. Data must not be used for direct marketing or be used in breach of the privacy laws. - You must include metadata with the product(s) and the metadata must incorporate as a minimum the metadata supplied with this data. 1 Obligations: - You must not use the data for direct marketing or in breach of the privacy laws. - If you wish to distribute the supplied data you must organise a different licence by contacting the Department ( siproductdelivery@dnrm.qld.gov.au). 2 Ownership: The State of Queensland as represented by the Department of Natural Resource and Mines (DNRM) is the owner of the intellectual property rights in and to the supplied data or has the right to make this supplied data available under licence arrangements. 3 Disclaimer and indemnity: You agree to accept all responsibility and risks associated with the use of the supplied data. DNRM makes no representations or warranties in relation to the supplied data, and, you agree that, to the extent permitted by law, all warranties relating to accuracy, reliability, completeness, currency or suitability for any particular purpose and all liability for any loss, damage or costs (including consequential damage) incurred in any way (including but not limited to that arising from negligence) in connection with any use of or reliance on the supplied data are excluded or limited. You agree to continually indemnify the State of Queensland and DNRM (and their officers and employees) against any loss, cost, expense, damage and liability of any kind (including consequential damage and liability in negligence) arising directly or indirectly from or related to any claim relating to your use of the supplied data or any product made from the data. ** End of Report. Produced: 09/12/ :18:02 PM **

32 DATE 09/12/2015 GROUNDWATER DATABASE Page 1 of 4 BORE REPORT REG NUMBER REGISTRATION DETAILS BASIN 1450 LATITUDE MAP-SCALE 253 OFFICE Brisbane SUB-AREA LONGITUDE MAP-SERIES M DATE LOG RECD 22-APR-10 D/O FILE NO. R/O FILE NO. H/O FILE NO. GIS LAT GIS LNG CHECKED Y FACILITY TYPE Sub-Artesian Facility STATUS Abandoned and Destroyed ROLES SHIRE 4590-LOGAN CITY EASTING MAP-NO LOT 1 NORTHING MAP NAME PLAN RP ZONE 56 PROG SECTION ORIGINAL DESCRIPTION ACCURACY GPS PRES EQUIPMENT GPS ACC 10 PARISH NAME 2968-MACKENZIE ORIGINAL BORE NO LOGAN HOUSE COUNTY STANLEY BORE LINE - POLYGON RN OF BORE REPLACED DATE DRILLED 14/04/2010 DATA OWNER DRILLERS NAME DRILL COMPANY WAYNE RICHTER DRILLING METHOD OF CONST. ROTARY AIR CASING DETAILS PIP E DATE RECORD NUMBER MATERIAL DESCRIPTION MAT SIZE (mm) SIZE DESC OUTSIDE DIAM (mm) TOP (m) BOTTOM (m) X 14/04/ Grout X 14/04/ Grout X 14/04/ Cuttings or other fill between casing and ho STRATA LOG DETAILS RECORD NUMBER STRATA TOP (m) STRATA BOT (m) STRATA DESCRIPTION BROWN SANDY SOIL BROWN SANDY CLAY LIGHT TO DARK LAYERS OF BROWN SANDSTONE LIGHT GREY TO LIGHT BROWN FINE GRAINED SANDSTONE COARSE GRAINED BROWN TO GREY SANDSTONE GREY MUDSTONE & SHALE

33 DATE 09/12/2015 GROUNDWATER DATABASE Page 2 of 4 BORE REPORT REG NUMBER RECORD NUMBER 6 7 STRATA TOP (m) STRATA BOT (m) STRATA DESCRIPTION LIGHT GREY SANDSTONE GREY SHALE, SANDSTONE & SILTSTONE STRATIGRAPHY DETAILS **** NO RECORDS FOUND **** AQUIFER DETAILS REC TOP BED(M) BOTTOM BED(M) BED LITHOLOGY DATE SWL (m) FLOW QUALITY YIELD (l/s) CTR CONDIT FORMATION NAME SDST N 1570 US/CM 0.10 N PS WOOGAROO SUBGROUP PUMP TEST DETAILS PART 1 **** NO RECORDS FOUND **** PUMP TEST DETAILS PART 2 **** NO RECORDS FOUND **** BORE CONDITION **** NO RECORDS FOUND **** ELEVATION DETAILS **** NO RECORDS FOUND **** WATER ANALYSIS PART1 **** NO RECORDS FOUND **** WATER ANALYSIS PART 2 **** NO RECORDS FOUND **** WATER LEVEL DETAILS **** NO RECORDS FOUND **** WIRE LINE LOG DETAILS

34 DATE 09/12/2015 GROUNDWATER DATABASE Page 3 of 4 BORE REPORT REG NUMBER **** NO RECORDS FOUND **** FIELD MEASUREMENTS **** NO RECORDS FOUND **** SPECIAL WATER ANALYSIS **** NO RECORDS FOUND ****

35 DATE 09/12/2015 GROUNDWATER DATABASE Page 4 of 4 BORE REPORT User Licence for digital data Permitted use: - You may use the supplied data for your own purposes (including supply to consultants for a specific consultancy project for you but the consultants must return or destroy the supplied data when the project is finished). You must not sell or distribute the supplied data. - You must display this copyright notice on any copies of the supplied data however altered, reformatted or redisplayed if you supply to a consultant or copy for back up purposes: The State of Queensland (Department Natural Resource and Mines) You may create and distribute hardcopy and digital products based on or containing the supplied data, provided all the following conditions are met: - You must display this acknowledgment on the product(s): Based on or contains data provided by the State of Queensland (Department of Natural Resource and Mines) In consideration of the State permitting use of this data you acknowledge and agree that the State gives no warranty in relation to the data (including accuracy, reliability, completeness, currency or suitability) and accepts no liability (including without limitation, liability in negligence) for any loss, damage or costs (including consequential damage) relating to any use of the data. Data must not be used for direct marketing or be used in breach of the privacy laws. - You must include metadata with the product(s) and the metadata must incorporate as a minimum the metadata supplied with this data. 1 Obligations: - You must not use the data for direct marketing or in breach of the privacy laws. - If you wish to distribute the supplied data you must organise a different licence by contacting the Department ( siproductdelivery@dnrm.qld.gov.au). 2 Ownership: The State of Queensland as represented by the Department of Natural Resource and Mines (DNRM) is the owner of the intellectual property rights in and to the supplied data or has the right to make this supplied data available under licence arrangements. 3 Disclaimer and indemnity: You agree to accept all responsibility and risks associated with the use of the supplied data. DNRM makes no representations or warranties in relation to the supplied data, and, you agree that, to the extent permitted by law, all warranties relating to accuracy, reliability, completeness, currency or suitability for any particular purpose and all liability for any loss, damage or costs (including consequential damage) incurred in any way (including but not limited to that arising from negligence) in connection with any use of or reliance on the supplied data are excluded or limited. You agree to continually indemnify the State of Queensland and DNRM (and their officers and employees) against any loss, cost, expense, damage and liability of any kind (including consequential damage and liability in negligence) arising directly or indirectly from or related to any claim relating to your use of the supplied data or any product made from the data. ** End of Report. Produced: 09/12/ :30:39 PM **

36 DATE 09/12/2015 GROUNDWATER DATABASE Page 1 of 3 BORE REPORT REG NUMBER REGISTRATION DETAILS BASIN 1450 LATITUDE MAP-SCALE 253 OFFICE Brisbane SUB-AREA LONGITUDE MAP-SERIES M DATE LOG RECD 22-APR-10 D/O FILE NO. R/O FILE NO. H/O FILE NO. GIS LAT GIS LNG CHECKED Y FACILITY TYPE Sub-Artesian Facility STATUS Abandoned and Destroyed ROLES SHIRE 4590-LOGAN CITY EASTING MAP-NO LOT 1 NORTHING MAP NAME PLAN RP ZONE 56 PROG SECTION ORIGINAL DESCRIPTION ACCURACY GPS PRES EQUIPMENT GPS ACC 10 PARISH NAME 2968-MACKENZIE ORIGINAL BORE NO LOGAN HOUSE COUNTY STANLEY BORE LINE - POLYGON RN OF BORE REPLACED DATE DRILLED 14/04/2010 DATA OWNER DRILLERS NAME DRILL COMPANY WAYNE RICHTER DRILLING METHOD OF CONST. ROTARY AIR CASING DETAILS PIP E DATE RECORD NUMBER MATERIAL DESCRIPTION MAT SIZE (mm) SIZE DESC OUTSIDE DIAM (mm) TOP (m) BOTTOM (m) X 14/04/ Grout X 14/04/ Grout X 14/04/ Cuttings or other fill between casing and ho STRATA LOG DETAILS RECORD NUMBER STRATA TOP (m) STRATA BOT (m) STRATA DESCRIPTION BROWN SANDY SOIL BROWN WEATHERED SANDSTONE LIGHT GREY & BROWNISH FINE GRAINED SANDSTONE STRATIGRAPHY DETAILS **** NO RECORDS FOUND ****

37 DATE 09/12/2015 GROUNDWATER DATABASE Page 2 of 3 BORE REPORT REG NUMBER AQUIFER DETAILS **** NO RECORDS FOUND **** PUMP TEST DETAILS PART 1 **** NO RECORDS FOUND **** PUMP TEST DETAILS PART 2 **** NO RECORDS FOUND **** BORE CONDITION **** NO RECORDS FOUND **** ELEVATION DETAILS **** NO RECORDS FOUND **** WATER ANALYSIS PART1 **** NO RECORDS FOUND **** WATER ANALYSIS PART 2 **** NO RECORDS FOUND **** WATER LEVEL DETAILS **** NO RECORDS FOUND **** WIRE LINE LOG DETAILS **** NO RECORDS FOUND **** FIELD MEASUREMENTS **** NO RECORDS FOUND **** SPECIAL WATER ANALYSIS **** NO RECORDS FOUND ****

38 DATE 09/12/2015 GROUNDWATER DATABASE Page 3 of 3 BORE REPORT User Licence for digital data Permitted use: - You may use the supplied data for your own purposes (including supply to consultants for a specific consultancy project for you but the consultants must return or destroy the supplied data when the project is finished). You must not sell or distribute the supplied data. - You must display this copyright notice on any copies of the supplied data however altered, reformatted or redisplayed if you supply to a consultant or copy for back up purposes: The State of Queensland (Department Natural Resource and Mines) You may create and distribute hardcopy and digital products based on or containing the supplied data, provided all the following conditions are met: - You must display this acknowledgment on the product(s): Based on or contains data provided by the State of Queensland (Department of Natural Resource and Mines) In consideration of the State permitting use of this data you acknowledge and agree that the State gives no warranty in relation to the data (including accuracy, reliability, completeness, currency or suitability) and accepts no liability (including without limitation, liability in negligence) for any loss, damage or costs (including consequential damage) relating to any use of the data. Data must not be used for direct marketing or be used in breach of the privacy laws. - You must include metadata with the product(s) and the metadata must incorporate as a minimum the metadata supplied with this data. 1 Obligations: - You must not use the data for direct marketing or in breach of the privacy laws. - If you wish to distribute the supplied data you must organise a different licence by contacting the Department ( siproductdelivery@dnrm.qld.gov.au). 2 Ownership: The State of Queensland as represented by the Department of Natural Resource and Mines (DNRM) is the owner of the intellectual property rights in and to the supplied data or has the right to make this supplied data available under licence arrangements. 3 Disclaimer and indemnity: You agree to accept all responsibility and risks associated with the use of the supplied data. DNRM makes no representations or warranties in relation to the supplied data, and, you agree that, to the extent permitted by law, all warranties relating to accuracy, reliability, completeness, currency or suitability for any particular purpose and all liability for any loss, damage or costs (including consequential damage) incurred in any way (including but not limited to that arising from negligence) in connection with any use of or reliance on the supplied data are excluded or limited. You agree to continually indemnify the State of Queensland and DNRM (and their officers and employees) against any loss, cost, expense, damage and liability of any kind (including consequential damage and liability in negligence) arising directly or indirectly from or related to any claim relating to your use of the supplied data or any product made from the data. ** End of Report. Produced: 09/12/ :26:43 PM **

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41 HISTORICAL TITLE SEARCH DEPT OF NATURAL RESOURCES AND MINES, QUEENSLAND Request No: Search Date: 07/01/ :37 Title Reference: Date Created: 09/04/1987 Previous Title: This Title Has Been Fully Cancelled. REGISTERED OWNER ESTATE AND LAND Estate in Fee Simple LOT 2 REGISTERED PLAN EASEMENTS, ENCUMBRANCES AND INTERESTS 1. SURVEY PLAN No subdivides the land into LOTS 2 & 3 ON RP Lodged at 10:27 on 19/08/ Rights and interests reserved to the Crown by Deed of Grant No (POR 79) ADMINISTRATIVE ADVICES - NIL UNREGISTERED DEALINGS - NIL CERTIFICATE OF TITLE ISSUED - No Caution - Charges do not necessarily appear in order of priority ** End of Historical Title Search ** COPYRIGHT THE STATE OF QUEENSLAND (DEPT OF NATURAL RESOURCES AND MINES) [2016] Requested By: D-ENQ CITEC CONFIRM Page 1/1

42 CURRENT TITLE SEARCH DEPT OF NATURAL RESOURCES AND MINES, QUEENSLAND Request No: Search Date: 03/12/ :06 Title Reference: Date Created: 10/10/1994 Previous Title: REGISTERED OWNER Interest Dealing No: /08/2009 JOHN JONATHAN NEVELL 1/5 JOHN MICHAEL NEVELL 1/5 JEFFREY ROBERT NEVELL 1/5 MARK DAVID NEVELL 1/5 JAMES KEVIN NEVELL 1/5 ESTATE AND LAND Estate in Fee Simple AS TENANTS IN COMMON LOT 3 REGISTERED PLAN County of STANLEY Local Government: LOGAN Parish of MACKENZIE EASEMENTS, ENCUMBRANCES AND INTERESTS 1. Rights and interests reserved to the Crown by Deed of Grant No (POR 79) 2. MORTGAGE No /11/2012 at 13:23 JOHN JONATHAN NEVELL INTEREST OF JEFFREY ROBERT NEVELL ONLY. 3. MORTGAGE No /02/2013 at 14:54 JOHN JONATHAN NEVELL THE INTEREST OF JOHN MICHAEL NEVELL ADMINISTRATIVE ADVICES - NIL UNREGISTERED DEALINGS - NIL CERTIFICATE OF TITLE ISSUED - No Caution - Charges do not necessarily appear in order of priority ** End of Current Title Search ** COPYRIGHT THE STATE OF QUEENSLAND (DEPT OF NATURAL RESOURCES AND MINES) [2015] Requested By: D-ENQ CITEC CONFIRM Page 1/1

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50 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland APPENDIX C EMR Searches HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 21

51 Department of Environment and Heritage Protection (EHP) ABN George St Brisbane, Queensland 4000 GPO Box 2454 Brisbane QLD 4001 AUSTRALIA SEARCH RESPONSE ENVIRONMENTAL MANAGEMENT REGISTER (EMR) CONTAMINATED LAND REGISTER (CLR) Transaction ID: EMR Site Id: December 2015 This response relates to a search request received for the site: Lot: 3 Plan: RP EMR RESULT The above site IS included on the Environmental Management Register. Lot: 3 Plan: RP Address: 89 KIRK ROAD CHAMBERS FLAT 4133 The site has been subject to the following Notifiable Activity or Hazardous Contaminant. LIVESTOCK DIP OR SPRAY RACE - operating a livestock dip or spray race facility. For the majority of rural properties only a small area may be affected by the chemicals used in livestock dips and spray races. The Department of Environment and Heritage Protection may hold further information relating to the location of the dip site within this property. CLR RESULT The above site is NOT included on the Contaminated Land Register. ADDITIONAL ADVICE All search responses include particulars of land listed in the EMR/CLR when the search was generated. The EMR/CLR does NOT include:- 1. land which is contaminated land (or a complete list of contamination) if EHP has not been notified 2. land on which a notifiable activity is being or has been undertaken (or a complete list of activities) if EHP has not been notified If you have any queries in relation to this search please phone 13QGOV ( ) Administering Authority Page 1 of 1

52 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland APPENDIX D Borehole Logs HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 22

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60 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland APPENDIX E Analytical Results HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 23

61 Table 1: Summary of Laboratory Analysis Results Anzac Avenue, Chambers Flat NEPM HIL A NEPM 2009 and EIL Res* Sample ID BH BH1 S BH BH BH BH BH BH BH6 S BH6 S BH6 S Metals Organochlorine Pesticides (OCs) mg/kg mg/kg Sample date 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 8/12/2015 LOR Depth (m) Arsenic <5 <5 <5 6 <5 <5 <5 Cadmium * <1 <1 <1 <1 <1 <1 <1 <1 Chromium (Cr VI) 400* (Cr III), 1* (Cr VI) Copper * <5 <5 6 Lead < Nickel * Zinc * Mercury * <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 alpha-bhc 0.05 Hexachlorobenzene (HCB) beta-bhc 0.05 gamma-bhc 0.05 delta-bhc 0.05 Heptachlor Aldrin 0.05 Heptachlor epoxide 0.05 Total Chlordane (sum) trans-chlordane 0.05 alpha-endosulfan 0.05 cis-chlordane 0.05 Dieldrin `-DDE 0.05 Endrin Endosulfan (sum) beta-endosulfan `-DDD 0.05 Endrin aldehyde 0.05 Endosulfan sulfate `-DDT <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 Endrin ketone 0.05 Methoxychlor <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 Sum of DDD + DDE + DDT Sum of Aldrin + Dieldrin Concentrations above laboratory detects in bold 1. Total Chromium not analysed *EIL's derived based on NEPM 2013 EIL for arsenic and lead. NEPM 1999 for cadmium, chromium, copper, nickel, zinc and mercury. LOR - Limit of Reporting HIL A: Residnetial and Primary Schools Land use setting. Cardno

62 TABLE 2: ALS Duplicate Relative Percentage Difference (RPD) Anzac Avenue, Chambers Flat BH QC02 RPD% Arsenic <5 <5 NA Cadmium <1 <1 NA Chromium Copper Lead Nickel Zinc Mercury <0.1 <0.1 NA Cardno

63 Stage 1 Environmental Site Assessment Anzac Avenue, Chambers Flat, Queensland Anzac Avenue, Chambers Flat, Queensland APPENDIX F Laboratory Results HRP15381 Cardno 3 February 2016 Prepared for Kings Christian College Version 1 Page 24

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67 Work Order Environmental SAMPLE RECEIPT NOTIFICATION (SRN) : EB Client : CARDNO (QLD) PTY LTD Laboratory : Environmental Division Brisbane Contact : MR CAMERON KAY Contact : Charles Tibbitts Address : LOCKED BAG 4006 Address : 2 Byth Street Stafford QLD Australia FORTITUDE VALLEY QLD cameron.kay@cardno.com.au Charles.Tibbitts@alsglobal.com Telephone : Telephone : Facsimile : Facsimile : Project : Chambers Flat Page : 1 of 3 Order number : Quote number : C-O-C number : QC Level : NEPM 2013 B3 & ALS QC Standard Site : Sampler Dates : DIANA BEDDER Date Samples Received : 09-Dec :40 PM Issue Date : 10-Dec-2015 Client Requested Due 16-Dec-2015 Scheduled Reporting Date : Date Delivery Details : 16-Dec-2015 Mode of Delivery : Carrier Security Seal : Intact. No. of coolers/boxes : 1 Temperature : 3.6 C - Ice present Receipt Detail : MEDIUM ESKY No. of samples received / analysed : 35 / 12 General Comments This report contains the following information: - Sample Container(s)/Preservation Non-Compliances - Summary of Sample(s) and Requested Analysis - Proactive Holding Time Report - Requested Deliverables Please be advised that sample "BH " was not received at the laboratory (denoted SNR on the scanned COC). Discounted Package Prices apply only when specific ALS Group Codes ('W', 'S', 'NT' suites) are referenced on COCs. Please direct any turn around / technical queries to the laboratory contact designated above. Sample Disposal - Aqueous (14 days), Solid (60 days) from date of completion of work order. An extra set of Snap lock bags was received labelled as "BH " and "BH " placed on hold. If testing is required, please contact ALS Client Services at ALSEnviro.Brisbane@alsglobal.com ASAP. Analysis will be conducted by ALS Environmental, Brisbane, NATA accreditation no. 825, Site No. 818 (Micro site no ). Sample(s) requiring volatile organic compound analysis received in airtight containers (ZHE). Breaches in recommended extraction / analysis holding times (if any) are displayed overleaf in the Proactive Holding Time Report table. R I G H T S O L U T I O N S R I G H T P A R T N E R

68 Issue Date : 10-Dec-2015 Page : 2 of 3 Work Order : EB Amendment 0 Client : CARDNO (QLD) PTY LTD Sample Container(s)/Preservation Non-Compliances All comparisons are made against pretreatment/preservation AS, APHA, USEPA standards. No sample container / preservation non-compliance exist. Summary of Sample(s) and Requested Analysis Some items described below may be part of a laboratory process necessary for the execution of client requested tasks. Packages may contain additional analyses, such as the determination of moisture content and preparation tasks, that are included in the package. Matrix: SOIL Laboratory sample ID Client sampling date / time Client sample ID (On Hold) SOIL No analysis requested SOIL - EA Moisture Content SOIL - EP068A (solids) Organochlorine Pesticides by GCMS EB [ 08-Dec-2015 ] BH ü ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH1 S ü EB [ 08-Dec-2015 ] BH1 S ü EB [ 08-Dec-2015 ] BH1 S ü ü EB [ 08-Dec-2015 ] BH1 S ü EB [ 08-Dec-2015 ] BH ü ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü ü ü EB [ 08-Dec-2015 ] BH ü ü ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH6 S ü ü ü EB [ 08-Dec-2015 ] BH6 S ü EB [ 08-Dec-2015 ] BH6 S ü EB [ 08-Dec-2015 ] BH6 S ü ü ü EB [ 08-Dec-2015 ] BH6 S ü EB [ 08-Dec-2015 ] BH6 S ü ü ü EB [ 08-Dec-2015 ] BH6 S ü EB [ 08-Dec-2015 ] QC01 ü EB [ 08-Dec-2015 ] QC02 ü ü EB [ 08-Dec-2015 ] QC03 ü EB [ 08-Dec-2015 ] BH ü EB [ 08-Dec-2015 ] BH ü SOIL - S-02 8 Metals (incl. Digestion)

69 Issue Date : 10-Dec-2015 Page : 3 of 3 Work Order : EB Amendment 0 Client : CARDNO (QLD) PTY LTD Matrix: WATER Laboratory sample ID Client sampling date / time Client sample ID (On Hold) WATER No analysis requested EB [ 08-Dec-2015 ] QC04 ü Proactive Holding Time Report Sample(s) have been received within the recommended holding times for the requested analysis. Requested Deliverables CAMERON KAY - *AU Certificate of Analysis - NATA (COA) cameron.kay@cardno.com.au - *AU Interpretive QC Report - DEFAULT (Anon QCI Rep) (QCI) cameron.kay@cardno.com.au - *AU QC Report - DEFAULT (Anon QC Rep) - NATA (QC) cameron.kay@cardno.com.au - A4 - AU Sample Receipt Notification - Environmental HT (SRN) cameron.kay@cardno.com.au - A4 - AU Tax Invoice (INV) cameron.kay@cardno.com.au - Chain of Custody (CoC) (COC) cameron.kay@cardno.com.au - EDI Format - XTab (XTAB) cameron.kay@cardno.com.au

70 Environmental CERTIFICATE OF ANALYSIS Work Order : EB Page : 1 of 8 Client : CARDNO (QLD) PTY LTD Laboratory : Environmental Division Brisbane Contact : MR CAMERON KAY Contact : Charles Tibbitts Address : LOCKED BAG 4006 Address : 2 Byth Street Stafford QLD Australia 4053 FORTITUDE VALLEY QLD cameron.kay@cardno.com.au Charles.Tibbitts@alsglobal.com Telephone : Telephone : Facsimile : Facsimile : Project : Chambers Flat QC Level : NEPM 2013 B3 & ALS QC Standard Order number : Date Samples Received : 09-Dec :40 C-O-C number : Date Analysis Commenced : 10-Dec-2015 Sampler : DIANA BEDDER Issue Date : 16-Dec :41 Site : No. of samples received : 35 Quote number : No. of samples analysed : 12 This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This Certificate of Analysis contains the following information: General Comments Analytical Results NATA Accredited Laboratory 825 Accredited for compliance with ISO/IEC Signatories This document has been electronically signed by the authorized signatories indicated below. Electronic signing has been carried out in compliance with procedures specified in 21 CFR Part 11. Signatories Position Accreditation Category Kim McCabe Senior Inorganic Chemist Brisbane Inorganics, Stafford, QLD Matt Frost Senior Organic Chemist Brisbane Organics, Stafford, QLD R I G H T S O L U T I O N S R I G H T P A R T N E R

71 Page : 2 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat General Comments The analytical procedures used by the Environmental Division have been developed from established internationally recognized procedures such as those published by the USEPA, APHA, AS and NEPM. In house developed procedures are employed in the absence of documented standards or by client request. Where moisture determination has been performed, results are reported on a dry weight basis. Where a reported less than (<) result is higher than the LOR, this may be due to primary sample extract/digestate dilution and/or insufficient sample for analysis. Where the LOR of a reported result differs from standard LOR, this may be due to high moisture content, insufficient sample (reduced weight employed) or matrix interference. When sampling time information is not provided by the client, sampling dates are shown without a time component. In these instances, the time component has been assumed by the laboratory for processing purposes. Key : CAS Number = CAS registry number from database maintained by Chemical Abstracts Services. The Chemical Abstracts Service is a division of the American Chemical Society. LOR = Limit of reporting ^ = This result is computed from individual analyte detections at or above the level of reporting ø = ALS is not NATA accredited for these tests. EP068: Sample shows poor matrix spike recoveries due to matrix interferences. EG005T (Total Metals) Sample EB shows poor matrix spike recovery due to sample heterogeneity. Confirmed by visual inspection.

72 Page : 3 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat Analytical Results Sub-Matrix: SOIL (Matrix: SOIL) Compound EA055: Moisture Content Moisture Content 103 C) CAS Number Client sample ID Client sampling date / time LOR 1 Unit % BH [08-Dec-2015] EB BH1 S [08-Dec-2015] EB BH [08-Dec-2015] EB BH [08-Dec-2015] EB BH [08-Dec-2015] EB Result Result Result Result Result EG005T: Total Metals by ICP-AES Arsenic mg/kg 54 <5 <5 Cadmium mg/kg <1 <1 <1 Chromium mg/kg Copper mg/kg Lead mg/kg Nickel mg/kg Zinc mg/kg EG035T: Total Recoverable Mercury by FIMS Mercury mg/kg <0.1 <0.1 <0.1 EP068A: Organochlorine Pesticides (OC) alpha-bhc mg/kg Hexachlorobenzene (HCB) mg/kg beta-bhc mg/kg gamma-bhc mg/kg delta-bhc mg/kg Heptachlor mg/kg Aldrin mg/kg Heptachlor epoxide mg/kg ^ Total Chlordane (sum) 0.05 mg/kg trans-chlordane mg/kg alpha-endosulfan mg/kg cis-chlordane mg/kg Dieldrin mg/kg 4.4`-DDE mg/kg Endrin mg/kg beta-endosulfan mg/kg ^ Endosulfan (sum) mg/kg 4.4`-DDD mg/kg Endrin aldehyde mg/kg Endosulfan sulfate mg/kg 4.4`-DDT mg/kg <0.2 <0.2 Endrin ketone mg/kg

73 Page : 4 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat Analytical Results Sub-Matrix: SOIL (Matrix: SOIL) Compound CAS Number Client sample ID Client sampling date / time LOR Unit BH [08-Dec-2015] EB BH1 S [08-Dec-2015] EB BH [08-Dec-2015] EB BH [08-Dec-2015] EB BH [08-Dec-2015] EB Result Result Result Result Result EP068A: Organochlorine Pesticides (OC) - Continued Methoxychlor mg/kg <0.2 <0.2 ^ Sum of Aldrin + Dieldrin / mg/kg ^ Sum of DDD + DDE + DDT / / mg/kg EP068S: Organochlorine Pesticide Surrogate Dibromo-DDE % EP068T: Organophosphorus Pesticide Surrogate DEF %

74 Page : 5 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat Analytical Results Sub-Matrix: SOIL (Matrix: SOIL) Compound EA055: Moisture Content Moisture Content 103 C) CAS Number Client sample ID Client sampling date / time LOR 1 Unit % BH [08-Dec-2015] EB BH [08-Dec-2015] EB BH [08-Dec-2015] EB BH6 S [08-Dec-2015] EB BH6 S [08-Dec-2015] EB Result Result Result Result Result EG005T: Total Metals by ICP-AES Arsenic mg/kg <5 6 <5 <5 Cadmium mg/kg <1 <1 <1 <1 Chromium mg/kg Copper mg/kg 18 9 <5 <5 Lead mg/kg <5 10 Nickel mg/kg Zinc mg/kg EG035T: Total Recoverable Mercury by FIMS Mercury mg/kg <0.1 <0.1 <0.1 <0.1 EP068A: Organochlorine Pesticides (OC) alpha-bhc mg/kg Hexachlorobenzene (HCB) mg/kg beta-bhc mg/kg gamma-bhc mg/kg delta-bhc mg/kg Heptachlor mg/kg Aldrin mg/kg Heptachlor epoxide mg/kg ^ Total Chlordane (sum) 0.05 mg/kg trans-chlordane mg/kg alpha-endosulfan mg/kg cis-chlordane mg/kg Dieldrin mg/kg 4.4`-DDE mg/kg Endrin mg/kg beta-endosulfan mg/kg ^ Endosulfan (sum) mg/kg 4.4`-DDD mg/kg Endrin aldehyde mg/kg Endosulfan sulfate mg/kg 4.4`-DDT mg/kg <0.2 <0.2 <0.2 <0.2 <0.2 Endrin ketone mg/kg

75 Page : 6 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat Analytical Results Sub-Matrix: SOIL (Matrix: SOIL) Compound CAS Number Client sample ID Client sampling date / time LOR Unit BH [08-Dec-2015] EB BH [08-Dec-2015] EB BH [08-Dec-2015] EB BH6 S [08-Dec-2015] EB BH6 S [08-Dec-2015] EB Result Result Result Result Result EP068A: Organochlorine Pesticides (OC) - Continued Methoxychlor mg/kg <0.2 <0.2 <0.2 <0.2 <0.2 ^ Sum of Aldrin + Dieldrin / mg/kg ^ Sum of DDD + DDE + DDT / / mg/kg EP068S: Organochlorine Pesticide Surrogate Dibromo-DDE % EP068T: Organophosphorus Pesticide Surrogate DEF %

76 Page : 7 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat Analytical Results Sub-Matrix: SOIL (Matrix: SOIL) Compound EA055: Moisture Content Moisture Content 103 C) CAS Number Client sample ID Client sampling date / time LOR 1 Unit % BH6 S [08-Dec-2015] EB QC02 [08-Dec-2015] EB Result Result Result Result Result EG005T: Total Metals by ICP-AES Arsenic mg/kg <5 <5 Cadmium mg/kg <1 <1 Chromium mg/kg Copper mg/kg 6 6 Lead mg/kg Nickel mg/kg 6 11 Zinc mg/kg EG035T: Total Recoverable Mercury by FIMS Mercury mg/kg <0.1 <0.1 EP068A: Organochlorine Pesticides (OC) alpha-bhc mg/kg Hexachlorobenzene (HCB) mg/kg beta-bhc mg/kg gamma-bhc mg/kg delta-bhc mg/kg Heptachlor mg/kg Aldrin mg/kg Heptachlor epoxide mg/kg ^ Total Chlordane (sum) 0.05 mg/kg trans-chlordane mg/kg alpha-endosulfan mg/kg cis-chlordane mg/kg Dieldrin mg/kg 4.4`-DDE mg/kg Endrin mg/kg beta-endosulfan mg/kg ^ Endosulfan (sum) mg/kg 4.4`-DDD mg/kg Endrin aldehyde mg/kg Endosulfan sulfate mg/kg 4.4`-DDT mg/kg <0.2 Endrin ketone mg/kg

77 Page : 8 of 8 Work Order : EB Client : CARDNO (QLD) PTY LTD Project : Chambers Flat Analytical Results Sub-Matrix: SOIL (Matrix: SOIL) Compound CAS Number Client sample ID Client sampling date / time LOR Unit BH6 S [08-Dec-2015] EB QC02 [08-Dec-2015] EB Result Result Result Result Result EP068A: Organochlorine Pesticides (OC) - Continued Methoxychlor mg/kg <0.2 ^ Sum of Aldrin + Dieldrin / mg/kg ^ Sum of DDD + DDE + DDT / / mg/kg EP068S: Organochlorine Pesticide Surrogate Dibromo-DDE % 131 EP068T: Organophosphorus Pesticide Surrogate DEF % 52.5

78 True False Environmental QUALITY CONTROL REPORT Work Order : EB Page : 1 of 6 Client : CARDNO (QLD) PTY LTD Laboratory : Environmental Division Brisbane Contact : MR CAMERON KAY Contact : Charles Tibbitts Address : LOCKED BAG 4006 Address : 2 Byth Street Stafford QLD Australia 4053 FORTITUDE VALLEY QLD cameron.kay@cardno.com.au Charles.Tibbitts@alsglobal.com Telephone : Telephone : Facsimile : Facsimile : Project : Chambers Flat QC Level : NEPM 2013 B3 & ALS QC Standard Order number : C-O-C number : Sampler Site : Quote number : : DIANA BEDDER This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This Quality Control Report contains the following information: Laboratory Duplicate (DUP) Report; Relative Percentage Difference (RPD) and Acceptance Limits Method Blank (MB) and Laboratory Control Spike (LCS) Report; Recovery and Acceptance Limits Matrix Spike (MS) Report; Recovery and Acceptance Limits Date Samples Received Date Analysis Commenced : 09-Dec-2015 : 10-Dec-2015 Issue Date : 16-Dec-2015 No. of samples received : 35 No. of samples analysed : 12 NATA Accredited Laboratory 825 Accredited for compliance with ISO/IEC Signatories This document has been electronically signed by the authorized signatories indicated below. Electronic signing has been carried out in compliance with procedures specified in 21 CFR Part 11. Signatories Position Accreditation Category Kim McCabe Senior Inorganic Chemist Brisbane Inorganics, Stafford, QLD Matt Frost Senior Organic Chemist Brisbane Organics, Stafford, QLD R I G H T S O L U T I O N S R I G H T P A R T N E R