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Page 1: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Acid Sulfate Soil InvestigationAcid Sulfate Soil Investigation

Lake

Acid Sulfate Soil Investigation

Lake Way

Acid Sulfate Soil Investigation

Way Demonstration PlantSalt Lake Potash

Leaders in

Acid Sulfate Soil Investigation

Demonstration PlantSalt Lake Potash

ABN: 92 147 485 416

Leaders in Environmental Practice

Acid Sulfate Soil Investigation

Demonstration PlantSalt Lake Potash

Revision 1March 2019

ABN: 92 147 485 416

Environmental Practice

Acid Sulfate Soil Investigation

Demonstration Plant

Salt Lake Potash Ltd

Revision 1 March 2019

Environmental Practice

Page 2: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Page 2 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Pendragon Environmental Solutions Pty Ltd ABN: 92 147 485 416 Address and Contact Details Suite 2 Level 1 464 Murray Street

Perth WA 6000

Tel: +61 (8) 9382-8286

Email: [email protected]

Website: www.pendragonenvironmental.com

Limitations, Uses and Reliance This document, once read in its entirety, may be relied upon for the purposes stated within the limits of:

Environmental investigations and assessments are undertaken in accordance with an agreed term of reference and timeframe and may involve intrusive investigations of subsurface conditions, generally at a few selected locations. Although due care, skill and professional judgement are applied in the interpretation and extrapolation of environmental conditions and factors to elsewhere, the potential for variances cannot be discounted. Therefore, the results, analyses and interpretations presented herein cannot be considered absolute or conclusive. Pendragon Environmental Solutions does not accept any responsibility for variances between the interpreted and extrapolated and those that are revealed by any means. Specific warning is given that many factors, natural or artificial, may render conditions different from those that prevailed at the time of investigation and should they be revealed at any time subsequently, they should be brought to our attention so that their significance may be assessed and appropriate advice may be offered. Users are also cautioned that fundamental assumptions made in this document may change with time and it is the responsibility of any user to ensure that assumptions made, remain valid.

The comments, findings, conclusions and recommendations contained in this document represent professional estimates and opinions and are not to be read as facts unless expressly stated to the contrary. In general, statements of fact are confined to statements as to what was done and/or what was observed; others have been based on professional judgement. The conclusions are based upon information and data, visual observations and the results of field and laboratory investigations and are therefore merely indicative of the environmental conditions at the time, including the presence or otherwise of contaminants or emissions. In addition, presentations in this document are based upon the extent of the terms of reference and/or on information supplied by the client, agents and third parties outside our control. To the extent that the statements, opinions, facts, conclusions and/or recommendations in this document are based in whole or part on this information, those are contingent upon the accuracy and completeness of the information which has not been verified unless stated otherwise. Pendragon Environmental Solutions does not accept responsibility for omissions and errors due to incorrect information or information not available at the time of preparation of this document and will not be liable in relation to incorrect conclusions should any information be incorrect or have been concealed, withheld, misrepresented or otherwise not fully disclosed. Neither will we be liable to update or revise the document to take into account any events, emergent circumstances or facts occurring or becoming apparent after the date of this document.

Within the limitations imposed by the terms of reference, the assessment of the study area and preparation of this document have been undertaken and performed in a professional manner, by suitably qualified and experienced personnel, in accordance with generally accepted practices and using a degree of skill and care ordinarily exercised by environmental consultants under similar circumstances. No other warranty, expressed or implied, is made.

This document has been prepared for the purposes stated herein. Every care was taken in the interpretation of environmental conditions and the nature and extent of impacts, presentation of findings and recommendations which are provided in good faith in the general belief that none of these are misleading. No responsibility or liability for the consequences of use and/or inference by others is accepted.

Intellectual and copyright in the information, data and representations such as drawings, figures, tabulations and text, included in this document remain the property of Pendragon Environmental Solutions. This document is for the exclusive use of the authorised recipient(s) and may not be used, copied or re-produced in whole, or in part, for any purpose(s) other than that for which it was prepared for. No responsibility or liability to any other party is accepted for any consequences and/or damages arising out of the use of this document without express and written consent.

The above conditions must be read as part of the document and must be reproduced where permitted. Acceptance of this document indicates acceptance of these terms and conditions.

Page 3: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Page 3 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Report

Title: Acid Sulfate Soil Investigation

Lake Way Demonstration Plant

File: PES18020

Author(s): Carel van der Westhuizen and Ryan Lawrence

Client: Salt Lake Potash Ltd

Contact: Ken Wilyman

Synopsis: This document details the acid sulfate soils investigation for the Lake Way Demonstration Plant.

Document Control

Revision No Date Author(s) Reviewer(s)

1 11 March 2019 Carel van der Westhuizen and Ryan Lawrence Taryn Wren

Distribution

Revision No Date Approved Recipient(s) No of Copies

1 11 March 2019 Taryn Wren Salt Lake Potash Ltd 1 Electronic

Revision

Revision No Date Description Approved

1 11 March 2019 Issued for EPA Referral Ryan Lawrence

Recipients are responsible for eliminating all superseded documents in their possession

© Pendragon Environmental Solutions 2019

Page 4: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Page 4 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

List of Abbreviations

Abbreviations

AASS Actual Acid Sulfate Soil

ABA Acid Base Accounting

ALS Australian Laboratory Services

ANC Acid Neutralizing Capacity

ANZECC Australian and New Zealand Environment and Conservation Council

ASS Acid Sulfate Soil

AVS Acid Volatile Sulfur

BoM Bureau of Meteorology

CRS Chromium Reducible Sulfur

DWER Department of Water and Environmental Regulation

EC Electrical Conductivity

EPA Environmental Protection Authority

LoR Limit of Reporting

NATA National Association of Testing Authorities

PASS Potential Acid Sulfate Soil

pHf A measure of the pH of a soil on a soil : water paste

pHfox A measure of the pH of a soil after rapid oxidation with hydrogen peroxide (H2O2)

QAQC Quality Assurance/Quality Control

Reaction Rate Effervescence (or reaction rate) is a visual measure of the vigorousness of the oxidation reaction during the pHfox test where: 1 = slight; 2 = moderate; 3 = high; and 4 = extreme

SoP Sulfate of Potassium

SPOS Peroxide Oxidisable Sulfur

SPOCAS Suspension Peroxide Oxidation Combined Acidity and Sulfur

MBOs Mono Sulfidic Black Oozes

TAA Titratable Actual Acidity

TDS Total Dissolved Solids

TPA Titratable Peroxide Acidity

TSA Titratable Sulfidic Acidity

Units

d day

hr hour

min minute

s second

km kilometre

m metre

Page 5: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Page 5 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Table of Contents Abbreviations ..................................................................................................................... 4

Executive Summary .......................................................................................................... 7

1. Introduction ................................................................................................................. 9

1.1 Background ....................................................................................................................... 9

1.2 Objectives ......................................................................................................................... 9

1.3 Scope of Work ................................................................................................................. 10

1.4 Sources of Data .............................................................................................................. 11

2. Site Identification ...................................................................................................... 12

2.1 Geology and Hydrogeology ............................................................................................. 12

2.1.1 Climate ................................................................................................................................. 12

2.1.2 Topography .......................................................................................................................... 12

2.1.3 Geology ................................................................................................................................ 12

2.1.4 Hydrology ............................................................................................................................. 13

2.1.5 Hydrogeology ....................................................................................................................... 13

2.1.6 ASS Risk Map ...................................................................................................................... 16

2.2 Data Gaps ....................................................................................................................... 16

3. Sampling and Analysis Plan .................................................................................... 18

3.1 Objective ......................................................................................................................... 18

3.2 Sampling Rationale ......................................................................................................... 18

3.3 Sampling Methodology .................................................................................................... 18

3.4 Laboratory Testing .......................................................................................................... 20

4. Quality Assurance and Quality Control ................................................................... 22

4.1 Field QA/QC .................................................................................................................... 22

4.2 Laboratory QA/QC .......................................................................................................... 22

4.3 QA/QC Data Evaluation .................................................................................................. 23

5. Results ....................................................................................................................... 24

5.1 Assessment Criteria ........................................................................................................ 24

5.2 Sediment Description and pH Tests ................................................................................ 25

5.3 CRS and SPOCAS Testing ............................................................................................. 26

5.3.1 Chromium Reducible Sulfur (CRS) ...................................................................................... 26

5.3.2 Acidity and Sulfur Trails........................................................................................................ 26

5.3.3 Acid Neutralizing Capacity (ANC) ........................................................................................ 28

5.3.4 Metal Leachability ................................................................................................................. 28

Page 6: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES18020 Page 6 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

5.4 ASS Assessment Summary ............................................................................................ 31

6. Conclusion and Recommendations ........................................................................ 33

6.1 Conclusion ...................................................................................................................... 33

6.2 Recommendations .......................................................................................................... 33

References ....................................................................................................................... 34

Tables Table 2.1: Brine Quality.

Table 3.1: Time Line of Acid Sulfate Soil Sampling and Analyses.

Table 3.2: Sampling and Analysis.

Table 4.1: Field QA/QC.

Table 4.2: Laboratory QA/QC.

Table 5.1: Field Acid Sulfate Soil Indicators.

Table 5.2: Acid Sulfate Soil Action Criteria.

Table 5.3: Sample Descriptions, pH and AVS.

Table 5.4: CRS and SPOCAS Laboratory Analytical Data.

Table 5.5: Leachable Metals.

Table 5.6: Metal Concentrations in Laboratory Leachates.

Figures

Figure 1.1: Site Location.

Figure 2.1: Lithological Log Locations.

Figure 2.2: Acid Sulfate Soils Risk.

Figure 3.1: ASS Sampling Locations. Appendices Appendix A: Laboratory Data and Certificates.

Page 7: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Page 7 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Executive Summary Background Pendragon Environmental Solutions Pty Ltd was engaged by Salt Lake Potash Ltd to undertake preliminary acid sulfate soil (ASS) investigations at Lake Way, located in the Mid West Region of Western Australia, approximately 15km south-east of Wiluna. The purpose of this study was to ascertain whether ASS are present, and if present, to assess the potential risk for acidification of soils and surface and ground water during the proposed abstraction of brines from the lake. It is the intention of Salt Lake Potash to abstract hyper-saline brines by trenches discharging into large ponds where the Sulfate of Potash (SoP) will be concentrated by means of evaporation. The potassium-rich salts precipitated in the final ponds will be harvested and processed in a demonstration crystallisation plant to produce saleable SoP. Objectives and Scope of Work The objectives of this study are to:

Ascertain the presence/absence of acid sulfate soils.

Assess the leachability of heavy metals.

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of the brines.

Make recommendations and detail management options (if required).

The scope of works entailed:

Review available pertinent documentation and conduct preliminary desk studies.

Formulate a Sampling and Analysis Quality Plan.

Field inspections and investigations.

Sample collection and laboratory analysis.

Interpret data against relevant standards/guidelines and undertake QA/QC data validation.

Compile an acid sulfate soils investigation report. Methodology Owing to the consistency and homogeneity of the sediment profile at Lake Way, determined in 36 test pits to a depth of at least 4m, a total of 25 samples of lake sediment, including what appear to be monosulfidic black oozes (MBOs), were obtained from 7 locations. These samples were analysed for field pHf and pHfox. A subset of samples was analysed for Acid Volatile Sulfur (AVS). Subsequent to assessing the field screen analytical data, further laboratory testing for Suspension Peroxide Oxidation Combined Acidity and Sulfur (SPOCAS) and Chromium Reducible Sulfur (CRS) was undertaken, with a limited number of samples analysed for heavy metals (total concentrations) and leachable metals. It should be noted that whilst the MBO’s [the term used to describe black, oily in appearance, gel-like substances with a moisture content greater than 70%, enriched in monosulfides (up to 27%), high in organic matter (usually 10% organic carbon) and can form thick (>1.0m) accumulations in waterways; DWER, 2015] were targeted, the materials encountered at Lake Way are considered to rather represent organic silts and clays primarily due to their visual characteristics and thickness (generally less than 8mm).

Page 8: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES18020 Page 8 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Summary of Analytical Results The salient findings to date include:

The lake sediments occur in a fairly consistent and homogenous profile comprising brown and red brown fine grained silty sandy clay and clay overlying weathered basement/basalt varying between 1m along the western shore to deeper than 30m in the east where the paleochannel prevails.

A visual inspection of the Williamson Pit (mined between 2005 and 2006) and trenches within the footprint of the trenches for the demonstration plant exhibited no evidence of acidification in the sediments and soils in the sidewalls and brine in the pit lake. The brine in the pit lake has a pH of 7.0 with very large concentrations of sodium, chloride, potassium and sulfate.

The sediments have pHf above 7.3, well above the assessment (trigger) level indicative of brine-logged alkaline un-oxidised conditions and absence of AASS. pHfox exceeds 5.8 well above the assessment level of 3.

From current laboratory analytical data the sediments within the footprint of the trenches for the demonstration plant cannot be classified as either Sulfidic or Sulfuric. AVS as a proxy for MBOs were found in two samples at 0.002%S and 0.008%S respectively well below the assessment level of 0.010%S. Consequently, the sediments cannot be classified as MBO’s either.

Chromium Reducible Sulfur (CRS) as a measure of potential sulfidic acidity and inorganic sulfur vary between <0.005%S and 0.018%S with only one sample (0.057%S) exceeding the Assessment Level of 0.030%S.

pHKCl in all samples exceeds 7.5 and pHox exceeds 7.1 indicating that there is no actual acidity and/or retained acidity in any of the samples.

Peroxide Oxidisable Sulfur (SPOS) corroborates the CRS determinations (low sulfur). The samples contain large concentrations of Peroxide Sulfur (SP) which reflects the presence of particularly sulfate from gypsum and sulfur released by the breakdown of organic matter. In all samples except one SP exceeds SKCl resulting in negative SPOS (SPOS = SP – SKCl) values.

Acid Neutralising Capacity (ANC) is only effective when pHKCl ≥ 6.5 which is the case in all the samples. Sediments contain ANC between 0.2%S and 1.0%S with an average of 0.5%S which exceeds any potential acidity from oxidation of sulfides (if any are present).

As the assessment endpoints are for ecosystem protection, leachable (total) metal concentrations were determined and except for a few marginal exceedances, the sediments contain heavy metals in concentrations well below the Interim Sediment Quality Guidelines (ISQG) Low Level indicating the probable effects concentrations are below levels where biological effects would rarely occur.

Dissolved metal concentrations in laboratory prepared leachates at a pH around 7 reflect concentrations currently measured in the brine; this scenario is likely to prevail due to the characteristics of the sediments and brines. Few metals leach under alkaline (pH > 9) conditions whilst more metals leach at larger concentrations under acidic (pH 4) conditions. It is highly unlikely that the environment at Lake Way will become acidic.

Conclusions and Recommendations There are no acid sulfate soils within the footprint of the trenches for the proposed demonstration plant. Consequently there is no risk of acidification and acid sulfate soil management will not be required. No further investigation and assessment will be necessary.

Page 9: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference:Site: Lake Way Demonstration Plant

1. In

1.1 Background Pendragon Environmental Solutions Pty Ltd was engaged by acidapproximately

The lake is underlain by sedimentsgypsumSulfate of Potash (SoP) will be conceprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce saleable SoP.

1.2 Objectives The

Reference: PES14017 Site: Lake Way Demonstration Plant

ntroductionBackgroundPendragon Environmental Solutions Pty Ltd was engaged by acid sulfate soilapproximately

The lake is underlain by sedimentsgypsum. HyperSulfate of Potash (SoP) will be conceprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce saleable SoP.

ObjectivesThe objectives

Ascertain the presence/absence of

Assess the

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of the brines.

Site: Lake Way Demonstration Plant

troductionBackground Pendragon Environmental Solutions Pty Ltd was engaged by

sulfate soil investigationapproximately 15km south

The lake is underlain by sediments. Hyper-saline brines

Sulfate of Potash (SoP) will be conceprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

Objectives objectives of this study are

the presence/absence of

Assess the leachability

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Title: Acid Sulfate Soil Investigation

troduction

Pendragon Environmental Solutions Pty Ltd was engaged by investigation (ASSI)

south-east of Wiluna

Figure

The lake is underlain by sediments, predominantly redsaline brines will be abstracted by trenches discharging into large ponds where the

Sulfate of Potash (SoP) will be conceprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

of this study are to:

the presence/absence of

of heavy metals.

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Page 9 of Acid Sulfate Soil Investigation

Pendragon Environmental Solutions Pty Ltd was engaged by at Lake Way

Wiluna (Figure 1

Figure 1.1: Locality Plan.

, predominantly redwill be abstracted by trenches discharging into large ponds where the

Sulfate of Potash (SoP) will be concentrated by means of evaporation. The potassiumprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

the presence/absence of acid sulfate soils

of heavy metals.

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

of 34 Acid Sulfate Soil Investigation

Pendragon Environmental Solutions Pty Ltd was engaged by Way in the Mid West

(Figure 1.1).

1.1: Locality Plan.

, predominantly red-brown will be abstracted by trenches discharging into large ponds where the

ntrated by means of evaporation. The potassiumprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

acid sulfate soils (ASS).

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Acid Sulfate Soil Investigation

Pendragon Environmental Solutions Pty Ltd was engaged by Salt Lake PotashMid West Region of

1.1: Locality Plan.

brown silts and clayswill be abstracted by trenches discharging into large ponds where the

ntrated by means of evaporation. The potassiumprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Salt Lake Potash Ltd to undertake egion of Western Australia,

silts and clays with large amounts of will be abstracted by trenches discharging into large ponds where the

ntrated by means of evaporation. The potassiumprecipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Date: March 2019 Revision No: 1

Ltd to undertake Western Australia,

with large amounts of will be abstracted by trenches discharging into large ponds where the

ntrated by means of evaporation. The potassium-rich salts precipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Date: March 2019 Revision No: 1

Ltd to undertake an Western Australia,

with large amounts of will be abstracted by trenches discharging into large ponds where the

rich salts precipitated in the final ponds will be harvested and processed in a crystallisation plant to produce

Ascertain the significance of potential impacts during excavation of the trenches and abstraction of

Page 10: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES18020 Page 10 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Make recommendations and detail management options (if required).

1.3 Scope of Work This investigation was undertaken taking cognisance of:

Shand, P, Appleyard, S, Simpson, SL, Degens, B, 2018: National Acid Sulfate Soils Guidance: Guidance for the Dewatering of Acid Sulfate Soils in Shallow Groundwater Environments, Department of Agriculture and Water Resources, Canberra, ACT.

Sullivan, L, Ward, N, Toppler, N and Lancaster, G, 2018: National Acid Sulfate Soils Guidance: National Acid Sulfate Soils Identification and Laboratory Methods Manual, Department of Agriculture and Water Resources, Canberra, ACT.

Sullivan, LA, Ward, NJ, Bush, RT, Toppler, NR, Choppala, G, 2018: National Acid Sulfate Soils Guidance: Overview and Management of Monosulfidic Black Ooze (MBO) accumulations in Waterways and Wetlands, Department of Agriculture and Water Resources, Canberra, ACT.

Sullivan, L, Ward, N, Toppler, N and Lancaster, G, 2018: National Acid Sulfate Soils Guidance: National Acid Sulfate Soils Sampling and Identification Methods Manual, Department of Agriculture and Water Resources, Canberra ACT.

Sullivan, L.A., Burton, E., Bush, R., Watling, K., Bush, M.D. (2008). Acid, metal and nutrient mobilisation dynamics of some MBOs and sulfuric soil materials in the Lower Murray region. Southern Cross GeoScience Report Number 108 (v.2).

Department of Water and Environment Regulation (DWER, 2015a): Identification and Investigation of Acid Sulfate Soils and Acidic Landscapes.

Department of Water and Environment Regulation (DWER, 2015b): Treatment and Management of Soil and Water in Acid Sulfate Soil Landscapes.

Queensland Acid Sulfate Soils Investigation Team Acid Sulfate Soils (QASSIT, 2004): Laboratory Methods Guidelines.

The following tasks were undertaken to achieve the above mentioned objectives:

1) Desk study assessment of the likelihood of ASS occurring at Lake Way:

Identify climate, topography, geology, hydrology and hydrogeology at the site.

Review ASS risk (ASRIS).

Obtain and assess aerial imagery.

Evaluate existing sediment and ground water (brine) qualities.

2) Field investigation and site assessment:

Develop a sampling and analysis plan.

Inspect the site and validate desk study.

Obtain samples of sediment from various depths at different locations.

3) Laboratory analysis:

pHf and pHfox on all samples.

Acid Volatile Sulfur (AVS) on selected samples predominantly based upon observations during sampling.

Page 11: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES18020 Page 11 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Suspension Peroxide Oxidation Combined Acidity and Sulfur (SPOCAS) and Chromium Reducible Sulfur (CRS) on selected samples.

Concentrations of heavy metals in sediment and laboratory prepared leachates (at pH 4, 7 and 9) on selected samples.

Quality Assurance (QA) and Quality Control (QC) data validation.

4) Assessment of ASS characteristics:

Compare laboratory results against assessment criteria.

Identify significance and locations of potential acid generating sediments.

Classify sediments.

Evaluate potential impacts and risks.

5) Compile a report with conclusions and recommendations on the ASS investigation.

1.4 Sources of Data Data and relevant information was obtained from:

Published sources, including geological maps, reports and publications.

Historic and current aerial photos from Google Earth.

Climatic data from the Bureau of Meteorology (http://www.bom.gov.au/climate/data/).

Acid sulfate soil risk map from Australian Soil Resource Information System (ASRIS) (http://www.asris.csiro.au/themes/AcidSulfateSoils.html).

Regional elevation contours from MapConnect of Geoscience Australia (http://mapconnect.ga.gov.au/MapConnect/250K/).

Several relevant reports (referenced where required) and data from the Salt Lake Potash database.

Page 12: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES18020 Page 12 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

2. Site Identification

2.1 Geology and Hydrogeology

2.1.1 Climate Lake Way is located in an arid climate. The nearest weather station is Wiluna (Bureau of Meteorology, BoM, Site No 013012 with data since 1898), approximately 15km north-west. The average annual rainfall at Wiluna is 262mm with average monthly rain varying between 5mm in September and 39mm in February. The annual evaporation at the Meekatharra weather station is considered more accurate due to data inconsistencies at the old Wiluna weather station (advice by BoM); a new automated station was opened in 2017 (Salt Lake Potash Ltd, 2019). The average daily pan evaporation at Meekatharra is 10mm and annual evaporation amounts to approximately 3,504mm. The playa has thus a marked water balance deficit: evaporation exceeds rainfall by more than thirteen times.

2.1.2 Topography Lake Way has a surface area of 205km2, it is 38.5km long, averages 9.0km in width, and is a terminal feature in the regional drainage pattern. Topographic data including the regional contour map SG51 Wiluna, obtained from Geoscience Australia, indicates that elevations across the region fall from the north to the south and from the west towards the east; however, elevations across the lake bed decreases slightly from the south-east (497mAHD) to the north-west (491mAHD).

2.1.3 Geology Lake Way is located in the Northern Goldfields Province on the Archaean Yilgarn Craton characterised by granite-greenstone rocks that exhibit a prominent north-west tectonic trend and low to medium-grade metamorphism intruded by east-west striking dykes of dolerite (Salt Lake Potash Ltd, 2019). The basement rocks are generally poorly exposed owing to low relief, extensive superficial cover and widespread deep weathering. The lake is associated with arid zone paleo-valleys (Magee, 2009) indicating a long-term absence of down-valley throughflow, and consequently, development of a large, hyper-saline reflux brine reservoir due to prolonged concentration by evaporation. The Lake Way system developed on the Carey Paleochannel in the Western Eucla Basin incised into the Archean basement and in-filled with a mixed Tertiary and Quaternary sedimentary sequence comprising sand, silts and clays of lacustrine, aeolian, fluvial and colluvial depositional origins. The paleochannel itself prevails along the eastern margin of the lake with the central, western and much of the northern portions of the playa residing on basement mafic, felsic and meta-sedimentary rocks at depths less than 5m. The playa sediments are dominated by alternating sequences of red-brown evaporitic sands, silts and clays with gypsum often with dark brown to black organic materials. Sedimentation appears to have occurred in two distinct phases: sediments deeper than approximately 1.1m are firm to hard and notably competent whilst those from surface to 1.1m depth are soft, puggy and unstable suggesting that the lower sediments are distinctly older than the upper sediments. The nature of sedimentation conforms to a model of geologically recent (Pleistocene to Holocene) phased tectonic uplift that has progressively dammed the Carey Paleochannel thereby creating the expanding lacustrine environment observed in the excavated pits today (as indicated by the multiple paleo surfaces and

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Reference: PES18020 Page 13 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

evidence of a receding, vegetated shoreline).

2.1.4 Hydrology There are no permanent surface water bodies anywhere in the development envelope for the demonstration plant other than the pit lake at Williamson Pit. The lake is dry except during wet summers and/or when cyclones, having a very low frequency, cause extensive rainfall-runoff such as in 1900, 1942, 1963, 1973 (Cyclone Kerry), repeatedly between 1992 and 2001, 2005 (Cyclone Bobby) and in 2006. In January and February 1995 (Cyclone Bobby), 294mm fell over 9 rain days including a 124mm event on 20 February resulting in inundation of the playa until at least December when the flooded lake surface was captured by satellite imagery. Lake Way receives episodic surface water inflows from West and East Creeks in the north and smaller creeks along the western and south-western perimeter of the lake and consequently surface water recharge is a significant part of the water balance for brine abstraction (Groundwater Science, 2018). The northern part of the playa exhibits morphology typical of significant surface water influence and periodic inundation (smooth playa edges). The southern part of the playa exhibits morphology consistent with a groundwater dominated playa with rare inundation (irregular shoreline, numerous islands; Groundwater Science, 2018). The frequency of inundation across the lake may be influenced by prevailing south-easterly winds driving water to the north eastern end of the lake. The Lake Way catchment is 3,767km2 (including the total West Creek sub-catchment, the extent of the catchment extent increases to some 11,000km2; KP, 2018 and 2019). Run-off modelling estimated that on average 3.9% of rainfall runs off to the lake (Groundwater Science, 2018). Most heavy rainfall occurs between December and March and as such 71% of significant runoff events (runoff depth >5mm) occur during this period. The average annual modelled run-off to the playa is 38GL/year but this is highly variable and ranges from 0 (years 1910 and 1936) up to a maximum of 314GL in 1936 and more recently 283GL in 1995. Since there are no drainage lines leaving the playa runoff onto the playa is eventually lost to evaporation (Groundwater Science, 2018). The quality of water ponding on the playa is influenced by the salt crust that covers the playa. Except for brief periods after large rainfall events, water ponded on the playa is typically hyper saline (>200g/L TDS). Groundwater beneath Lake Way is also hyper saline with a median TDS concentration of approximately 326g/L. The playa groundwater has no noticeable enrichment in trace metals, including uranium and thorium (Groundwater Science, 2018).

2.1.5 Hydrogeology Detailed geological and hydrogeological investigations (36 test pits and bores and 5 trenches) across the lake (Figure 2.1) indicated that:

Materials at the site comprise a consistent, homogenous profile of evaporite salts blanketing upper lakebed sand, silt and clay sequences underlain by weathered basement/basalt:

SaC/CS Brown Sand Clay or Clayey Sand, fine to medium, dry to moist, soft to firm; on average 1m thick, present across the entire lake.

SiC Brown and red brown Silty Clay, dry to moist, soft to firm with gypsum crystals locally; only present locally but attains thicknesses of up to 1.5m.

Cl Orange, purple, white, green or red brown Clay, saprolite, porous, soft to stiff; generally directly underlying the brown Sand Clay; between 0.4m and more than 4m thick, present across the entire lake.

B Weathered Basement/Basalt; between 1m (western part of the lake) and deeper than 30m (eastern and central parts of the lake.

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LITHOLOGICAL LOG LOCATIONS

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Reference: PES18020 Page 15 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

North-south cross-section between LYTT030 and LYTT016; Figure 2.1.

East-west cross-section between LYTT031 and LYTT028; Figure 2.1.

Brine flows were encountered in most, if not all, bores and test pits.

Some test pits maintained low sustainable yields indicating low hydraulic conductivity, whilst others had comparatively high test rates and small drawdowns indicating significantly larger hydraulic conductivities and specific yields.

Some 30 recovery and slug tests (in pits and trenches) analysed using several methodologies, in addition to some 45 laboratory porosity and specific yield tests reported, remarkably consistent, K (hydraulic conductivity or permeability) values around 2.5m/d to 4.0m/d with specific yields varying between 5% and 15% averaging 11%.

The upper lakebed sequences have high hydraulic conductivities whilst the underlying or lower sequences have markedly lower hydraulic conductivity.

The average water (brine) level depth beneath the playa surface measured in piezometers and test pits ranges between 0.3m and 0.5m averaging 0.4m. The thickness of the brine resource is defined by the depth to the base of the lakebed sediments which varies between less than 1m in the west and 34.6m below ground level; generally thinner in the north and thickening to the south. The lake sediments are recharged by infiltration of surface run-off from the surrounding catchment (on average 38GL/yr) and direct rainfall. Based on monitoring elsewhere, rainfall events of greater than 5mm/d will infiltrate to the brine surface and a detailed analysis of rainfall data at Wiluna found that the average annual rainfall that falls in events greater than 5mm/day is 200mm/a which amounts to 38GL/yr across the playa extent of 188.7km2 (Groundwater Science, 2018). All this water is lost to capillary rise and evaporation. The analysis of ground water (Table 2.1), essentially a hyper-saline brine, and particularly a ratio of soluble chloride to soluble sulfate (Cl-:SO4

2-) may provide an indication of the possible presence of ASS in the landscape (DER, 2015a). A Cl-:SO4

2- ratio of less than four, and certainly a ratio less than two, is a strong indication of an extra source of sulfate from previous oxidation. In addition, other indicative parameters (DER, 2015b) include a pH of less than 5 and a soluble aluminium concentration

SC Brown Sand Clay with gypsum

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Reference: PES18020 Page 16 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

greater than 1mg/L. Sampling to date (Table 2.1) indicates that none of the samples have a Cl-:SO4

2- ratio below 4, pH below 6 or an aluminium concentration greater than 1mg/L, inferring a low potential risk for acidity. Table 2.1: Brine Concentrations.

Parameter pH EC TDS Na Cl K Mg Ca SO4 Al Cl:SO4

Unit are in mg/L where relevant; EC in mS/cm

Minimum 6.0 420 252 78,000 121,800 3,900 3,100 175 15,900 <1 4

Maximum 7.1 1,050 630 113,000 178,500 8,970 10,800 814 34,200 11

Average 6.6 537 322 99,064 155,025 5,411 6,407 446 25,429 6

Note: Nine samples were taken from the Williamson Pit and 47 from the Demonstration Plant Trench Area.

2.1.6 ASS Risk Map The Australian National Acid Sulfate Soil Risk Map (ASRIS, Figure 2.2) indicates that Lake Way is an inland water body with sediments of recent (Holocene) geological age with a high probability, but with very low confidence, of the presence of potential acid sulfate soils (PASS). The Atlas of Australian Acid Sulfate Soils was compiled by CSIRO to provide a consistent national collation of acid sulfate soils. The ASS mapping is classified with a nationally consistent legend that includes risk assessment criteria and correlations between Australian and International Soil Classification Systems. Existing digital datasets of ASS mapping have been sourced from each coastal state and territory and combined into a single national dataset. The original state classifications have been translated to a common national classification system by the respective creators of the original data and other experts. This component of the Atlas is referred to as the Coastal ASS mapping. The remainder of Australia beyond the extent of state ASS mapping has been backfilled with a provisional ASS classification inferred from national and state soils, hydrography and landscape coverages; this component is referred to as the Inland ASS mapping.

2.2 Data Gaps Prior to this investigation no ASS investigations and/or assessments were undertaken.

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Reference: PES18020 Page 18 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

3. Sampling and Analysis Plan

3.1 Objective Since the ASS risk map indicated a high probability with low confidence of potential acid sulfate soils (PASS) at Lake Way, a preliminary sampling program was developed to sample sediment across the disturbance footprint of the proposed trenches for the demonstration plant (essentially the northern part of the lake) where access was possible and outside the exclusion zones (Figure 3.1). The objective of this first sampling event was to ascertain the presence or absence of ASS and to define a future sampling regime (if required).

3.2 Sampling Rationale Although DER (2015a) indicates a minimum of two sampling locations per hectare required for non-linear disturbance and 50m intervals for linear disturbance with major width and volume, taking due cognisance of the extent of the lake coupled with the consistency in stratigraphic sedimentary sequences, a reduced sampling density could be justified and was adopted. A sampling and analysis program appears in Table 3.1. Table 3.1: Time Line.

Time Work Oder No. Activity

February 2019 EB1903555 25 samples of sediment samples were obtained for pHf, pHfox and AVS.

EB1904386 Selected samples were subject to SPOCAS, CRS, Total and Leachable Metals.

3.3 Sampling Methodology The locations, recorded using a global positioning system (GPS) unit, of samples are indicated on Figure 3.1. Sampling depths and sample descriptions may be found in Table 3.2. Owing to the consistency of the sediment profile at Lake Way (refer Section 2.1.5), a total of 25 sediment samples from 7 locations were obtained during the initial sampling event in February 2019. Samples of sediments (generally moist, soft to firm and with gypsum crystals) were obtained at 0.25m intervals from surface to between 0.75m and 1.50m at the top of a dense, stiff brown and red brown clay with gypsum (the material in the vertical sidewalls) which was identified as a non-acid sulfate soil:

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COPYRIGHT: this document remains the property of Pendragon Environmental Solutions; it was prepared for the exclusive use of the authorised recipient(s) and may not be used, copied or re-produced in whole, or in part, for any purpose(s) other than that for which it was prepared for. No responsibility or liability to any other party is accepted by the use of this document without written consent.

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Reference: PES18020 Page 20 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Sediments with an appearance similar to MBOs were targeted during sampling as they represent the highest risk:

It should be noted that whilst the apparent MBO’s [the term used to describe black, oily in appearance, gel-like substances with a moisture content greater than 70%, enriched in monosulfides (up to 27%), high in organic matter (usually 10% organic carbon) and can form thick (>1.0m) accumulations in waterways; DWER, 2015] were targeted, the materials encountered at Lake Way are considered to rather represent organic silts and clays primarily due to their visual characteristics and total thickness (generally less than 8mm). MBO’s are of environmental concern because when disturbed they may react with oxygen and release acidity and metals resulting in acidification and de-oxygenation. Clean disposable nitrile gloves were used to handle each sample in order to minimise the potential for cross contamination. Samples were placed in glass containers with Teflon lids provided by the analytical laboratory, stored with sufficient ice in insulated coolers and delivered to Australian Laboratory Services (ALS) Pty Ltd, a National Association of Testing Authorities (NATA) accredited laboratory, within the prescribed holding times.

3.4 Laboratory Testing Each sample of sediment was subjected to field pH (pHf) and pH peroxide (pHfox) testing to screen for actual and potential ASS (Table 3.2). In addition, selected samples having the visual appearance of MBO’s were analysed for AVS. The subsequent analytical program included the SPOCAS suite to ascertain existing acidity and/or the potential to generate acidity including whether these sediments contain buffering or neutralising capacity. Selected samples were also tested for CRS and organic carbon; it is known that SPOCAS testing may over estimate concentrations of sulphur where the samples contain large concentrations of gypsum and/or organic matter. The analytical program also included total metals in the sediments and metals in laboratory prepared leachates.

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LocationASS 1 0.00 0.25 Silty CLAY underlying a thin salt crust, brown to dark brown, very fine to fine, wet 7.6 6.6 Strong 1.0 ----

0.25 0.50 Silty CLAY, brown, very fine to fine, wet 7.4 6.1 Strong 1.3 ----

0.90 1.10 Silty CLAY with minor small gypsum crystals, dense becoming very dense with depth, brown, very fine to fine, wet 7.3 6.1 Strong 1.2 ----

1.40 1.50 Silty CLAY with minor small gypsum crystals, very dense, brown to dark brown, very fine to fine, wet 7.4 5.8 Strong 1.6 ----

ASS 2 0.00 0.25 Silty CLAY underlying a thin salt crust, brown to dark brown, very fine to fine, wet 7.8 6.1 Strong 1.7 ----

0.25 0.50 Silty CLAY, brown, very fine to fine, wet 7.6 7.5 Extreme 0.1 ----

0.90 1.10 Silty CLAY with minor small gypsum crystals, dense becoming very dense with depth, brown, very fine to fine, wet 7.5 5.8 Strong 1.7 0.008 29.6

1.40 1.50 Silty CLAY with minor small gypsum crystals and minor black speckles, very dense, brown to dark brown, very fine to fine, wet 7.4 6.4 Extreme 1.0 ----

ASS 3 0.00 0.25 Silty CLAY underlying a thin salt crust, brown, very fine to fine, wet 7.5 6.6 Extreme 0.9 ----

0.25 0.50 Silty CLAY, brown, very fine to fine, wet (sample radiate heat) 7.5 8.0 Extreme -0.5 ----

0.90 1.10 Silty CLAY with minor small gypsum crystals and minor black speckles, dense, brown to dark brown, very fine to fine, wet (sample radiate heat) 7.5 6.6 Strong 0.9 <0.001 26.4

ASS 4 0.00 0.25 Silty CLAY underlying a thin salt crust, brown, very fine to fine, wet; MBO at surface 4-6mm thick 7.8 7.4 Extreme 0.4 ---- ----

0.25 0.50 Silty CLAY, brown, very fine to fine, wet 7.6 8.0 Extreme -0.4 ---- ----

0.90 1.10 Silty CLAY with minor small gypsum crystals, dense, brown, very fine to fine, wet 7.7 8.0 Extreme -0.3 ---- ----

ASS 5 0.00 0.25 Silty CLAY underlying a thin salt crust, brown to dark brown, very fine to fine, wet, MBO at surface 4-8mm thick 7.6 7.5 Extreme 0.1 <0.001 19

0.25 0.50 Silty CLAY with minor small gypsum crystals, dense, brown, very fine to fine, wet (sample radiate heat) 7.7 8.1 Extreme -0.4 ---- ----

0.50 0.75 Silty CLAY with minor small gypsum crystals, very dense, brown to dark brown, very fine to fine, wet (sample radiate heat) 7.4 8.0 Extreme -0.6 ---- ----

ASS 6 0.00 0.25 Silty CLAY underlying a thin salt crust, brown, very fine to fine, wet; MBO at surface 2-6mm thick 7.7 7.0 Extreme 0.7 0.002 24.7

0.25 0.50 Silty CLAY with minor small gypsum crystals, dense, brown, very fine to fine, wet (sample radiate heat) 7.6 7.5 Extreme 0.1 ---- ----

0.90 1.10 Silty CLAY with minor small gypsum crystals, becoming very dense, brown to dark brown, very fine to fine, wet (sample radiate heat) 7.7 6.8 Extreme 0.9 ---- ----

ASS 7 0.00 0.25 Silty CLAY with small gypsum crystals, brown to dark brown, very fine to fine, dry 8.3 6.7 Strong 1.6 ---- ----

0.25 0.50 Silty CLAY with small gypsum crystals, brown, dense, very fine to fine, dry 7.7 7.8 Extreme -0.1 ---- ----

0.90 1.10 Silty CLAY with small gypsum crystals, brown, dense becoming very dense, very fine to fine, dry 7.8 7.9 Extreme -0.1 ---- ----

1.40 1.50 Silty CLAY with small gypsum crystals, brown, dense becoming very dense, very fine to fine, dry 7.3 7.1 Extreme 0.2 ---- ----

1.90 2.00 Silty CLAY with small gypsum crystals, brown, dense becoming very dense, very fine to fine, dry 7.4 6.2 Strong 1.2 ---- ----

Notes: 2.4 Detection: concentration exceeds Limit of Reporting LoR. n 25

2.4 Indicate exceedance of Assessment Level.Lime needed (kg CaCO3/m

3 soil) = Bulk density soil (ton/m3 = 1.6) x Net acidity (S% x 30.59) x 1.028 x safety factor (=2.0) x 100/ENV (=60%)

Field pH tests are purely qualitative and do not give any quantitative measure of the amount of acid that has been or could be produced throughout oxidation processes.

pHF<4.0 indicates actual acidity (AASS).

pHFOX<3.0 indicates potential acidity (PASS) using 30% hydrogen peroxide (H2O2).

pH difference: The larger the difference from (pHF) to (pHFOX), the more likely of the soil being PASS.

In summary: pHFOX<3 plus a strong reaction plus a large change from pHF to pHFOX strongly indicates PASS.

Work Order/Date: EB1903555, 19 February 2019

Table 3.2: Sediment Sampling and Analysis. ASS Field Screening Acid Volatile Sulfur (AVS)

Lake surface adjacent to causeway

Sample Number

Depth (from)

Depth (to) Sample Description (preliminary regional sampling event across lake)

Lake surface adjacent to causeway

Lake surface adjacent to causeway

pHFOX: <3: strongly indicates ASS; 3-4: possibly ASS, but less certain, laboratory analysis would be required to confirm the presence of sulfides; 4-5: possible small amount of sulfides present, or the sample might be poorly reactive or fine carbonates are present. Laboratory analysis will again be necessary to determine the soil’s status; >5: with a minimal difference to pHF, this is unlikely to be ASS unless fine carbonates are present.

Lake surface adjacent to causeway

Williamson Pit (cut face)

The Reaction Rate generally indicates the level of sulfides but depends also on texture and other constituents. Soils containing little sulfides may rate Slight, however, high levels are more likely to rate Extreme although there are exceptions. This rating scale alone should not be used - it is unreliable in isolation since other factors e.g. manganese and organic acids may also trigger reactions. Reactions with organic matter tend to be more frothing with less heat than sulfidic reactions whilst manganese reactions will be quite extreme but don’t tend to lower pHFOX.

Lake surface adjacent to causeway

Lake surface adjacent to causeway

pHF: <4: oxidised ASS (extremely acidic); jarosite may be present; <4.5: extremely acidic, most likely pyrite oxidation but also when soil is highly organic or from fertiliser use; 4.5-5.5: very acidic soil, however it is inconclusive whether low pH is due to pyrite oxidation; 6-7: no actual acidity - common in undisturbed acid sulfate soil. Marine-influenced samples may have pHF up to ~8.

The pHF test does not detect acidity in un-oxidised sulfides, consequently the pHFOX test is conducted. Rapid reaction with concentrated peroxide fast-forwards the breakdown of pyrite and provides an indication of potential acid that could be released from the soil.

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Reference: PES18020 Page 22 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

4. Quality Assurance and Quality Control

4.1 Field QA/QC The field QA/QC is summarised in Table 4.1. Table 4.1: Field QA/QC.

Component Description

Guidelines: Identification and Investigation of Acid Sulfate Soils and Acidic Landscapes, DER, 2015. Treatment and Management of Soil and Water in Acid Sulfate Soil Landscapes, DER, 2015. National Acid Sulfate Soils Guidance: Guidance for the Dewatering of Acid Sulfate Soils in Shallow Groundwater Environments, Department of Agriculture and Water Resources, Canberra, ACT, Shand, P, Appleyard, S, Simpson, SL, Degens, B, 2018. National Acid Sulfate Soils Guidance: National Acid Sulfate Soils Identification and Laboratory Methods Manual, Department of Agriculture and Water Resources, Canberra, ACT, Sullivan, L, Ward, N, Toppler, N and Lancaster, G, 2018. National Acid Sulfate Soils Guidance: Overview and Management of Monosulfidic Black Ooze (MBO) accumulations in waterways and wetlands, Department of Agriculture and Water Resources, Canberra, ACT, Sullivan, LA, Ward, NJ, Bush, RT, Toppler, NR, Choppala, G, 2018. National Acid Sulfate Soils Guidance: National Acid Sulfate Soils Sampling and Identification Methods Manual, Department of Agriculture and Water Resources, Canberra ACT, Sullivan, L, Ward, N, Toppler, N and Lancaster, G, 2018. Queensland Acid Sulfate Soils Investigation Team Acid Sulfate Soils - Laboratory Methods Guidelines (QASSIT 2004). Assessment and Management of Contaminated Sites, Contaminated Sites Guidelines, DWER, 2014. ASC NEPM, National Environment Protection (Assessment of Site Contamination) Measure 1999.

Procedure (not included in this document):

Pendragon Environmental Solutions Standard Environmental Sampling Protocol. Pendragon Environmental Solutions Health, Safety and Environmental Plan (HSEP).

Record keeping: Full details of sample collection and sample description were recorded on field data sheets including sampling date, location (coordinates, elevations and depths where relevant), and water levels.

Sampling and decontamination to prevent cross contamination:

Sediment samples were collected using a stainless steel trowel by site personnel using new dis-posable nitrile gloves for each sample. Equipment used in the sampling process was rinsed with laboratory grade distilled water, on arrival at site and between sampling locations, to reduce the risk of cross contamination.

QA/QC Samples: Laboratory QA/QC samples were used for Quality Control in initial sampling event for preliminary ASS investigation. Field and laboratory QA/QC samples were analyzed in subsequent sampling event.

Sample labelling: Samples were clearly marked with unique identification details, sampling date, sampler initials, project name and number and analyses required.

Sample storage and delivery:

Samples were placed into the ASS sampling bags prepared and provided by the NATA accredited laboratory - ALS. All samples were placed in an esky with sufficient ice and delivered to ALS within the holding times.

Chain of Custody Chain of Custody (CoC) were adhered to for all sample transfers, detailing all relevant contact details, sample numbers, sampling date and time, condition of sample, description of sample containers and sizes, analyses required, detection or reporting limits and specific instructions. CoC may be found in Appendix A.

4.2 Laboratory QA/QC Samples were analysed by ALS, a NATA accredited laboratory. Analysis methods employed were in line with Identification and Investigation of Acid Sulfate Soils and Acidic Landscapes (DER, 2015a). The laboratory certificates (Chain of Custody, Sample Receipt Notification, Certificate of Analysis, Quality Control and Quality Control Interpretive Report) are included in Appendix A and a summary of laboratory QA/QC is detailed in Table 4.2.

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Reference: PES18020 Page 23 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Table 4.2: Laboratory QA/QC.

Component ALS Work Order

EB1903555 EB1904386

Holding Times: no outliers Breaches (refer Notes)

Laboratory Duplicate (DUP): no outliers no outliers

Laboratory Control Samples (LCS): no outliers no outliers

Method Blank (MB): no outliers no outliers

Laboratory Control Spike: no outliers no outliers

Matrix Spikes (MS): no outliers no outliers

Frequency of Quality Control Samples (FQC): no outliers no outliers

Note:

EB1904386

Analysis holding time breach for Organic Matter.

4.3 QA/QC Data Evaluation Taking cognisance that:

Organic Matter concentrations (holding time breaches) are determined for comparative purposes with visual observations and consequently will not affect further assessment.

Appropriate and sufficient field quality control measures had been undertaken as discussed in Table 4.1.

The analytical results may therefore be deemed accurate and representative of site conditions.

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Reference: PES18020 Page 24 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

5. Results

5.1 Assessment Criteria Field ASS indicators are based on pHf and pHfox (DER, 2015a): Table 5.1: Field ASS Indicators.

pH Value Indication Comments

pHf

pHf ≤ 4 AASS Not conclusive

4 < pHf ≤ 5.5 ASS Further investigation needed

pHf > 7 waterlogged un-oxidised or poorly drained soil/sediment pHfox test required

pHfox

pHfox<3 with strong reaction rate and large ΔpH PASS The lower pHfox below 3, the more positive

likely presence of sulfides

3 ≤ pHfox < 4 and reaction to peroxide less positive and borderline Laboratory analyses needed

4 ≤ pHfox < 5 neither positive nor negative Laboratory analyses needed

pHfox >5 or no drop in pH but reaction to peroxide little net acidifying ability Laboratory analyses needed

pHf - pHfox ≥ 1 and reaction to peroxide maybe PASS The greater ΔpH, the more indicative PASS. The lower final pHfox is, the better indication of a positive result.

Notes: Peroxide reaction rate cannot be used alone.

A combination of pHfox<3 and an analytical value of 0.01%Scr or greater are excellent indicators of ASS. The assessment criteria adopted for ASS in Western Australia are the Texture-Based ASS Action Criteria based on Net acidity (excluding the consideration of ANC; DER, 2015a). Table 5.2 Texture-based ASS Action Criteria.

Type of Material Net Acidity Action Criteria

>1000 tonnes of materials disturbed

Texture range McDonald et al. (1990) Approx. clay content (%) Equivalent sulfur (%S)

(oven-dry basis) Equivalent acidity (mol H+/

tonne) (oven-dry basis)

Coarse texture sands to loamy sands and peats <5 0.03 18

Medium texture sandy loams to light clays 5–40 0.03 18

Fine texture medium to heavy clays and silty clays >40 0.03 18

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Reference: PES18020 Page 25 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

5.2 Sediment Description and pH Tests

Sample descriptions and pH results appear in Table 3.2. Earlier investigations (Salt Lake Potash Ltd, 2019) indicated that sediments in the lake predominantly brown and red brown, fine to medium grained, silty sandy clay and clay often with organic matter and fine to coarse grained gypsum crystals. Similar lithologies were observed during this investigation. Surficial sediments comprise a thin salt crust at the surface blanketing thin dark grey, brown to black organic silts and clays (with an appearance similar to MBO’s) overlying brown and red brown saturated silty sand, silty clay and/or clay, with fine to coarse gypsum grains. Visual inspections of the surface of the lake where access was possible indicated that the organic rich silts and clays are between 2mm and 8mm thick (refer photo inserts on page 20), localised and sporadically distributed. The sediments have pHf between 7.3 and 8.3, averaging 7.6, well above the assessment (trigger) level of 4 indicative of brine-logged alkaline un-oxidised poorly drained conditions and absence of AASS whilst pHfox range between 5.8 and 8.1, averaging 7.0, well above the assessment level of 3 indicative of slight acid generation capability. The difference of >1 between pHf and pHfox in seven samples (Table 3.2) coupled with all samples having strong to extreme reactions with peroxide suggest there is a potential for sulfide materials to be present hence the request for further laboratory testing to assess the potential for acid generation. Organic rich substrates such as peat and coffee rock, and constituents like manganese oxides, may also cause a reaction to peroxide. Care must be exercised in interpreting the pH results and reaction rates and generally further laboratory testing is required to confirm if appreciable concentrations of reduced organic sulfide (RIS) is present and whether these sediments contain effective self-neutralising materials. Table 5.3: pH and AVS Laboratory Analytical Data.

Analyte ASS Field Screening Acid Volatile Sulfur (AVS)

pHf pHfox Reaction Rate ΔpH = pHf - pHfox AVS Moisture Content

Units pH Unit - pH Unit % %

Assessment Level 4 3 - 1 0.010 -

n 25 25 25 25 4 4

Minimum 7.3 5.8 Strong -0.6 <0.001 (n=2) 19.0

Maximum 8.3 8.1 Extreme 1.7 0.002 - 0.008 29.6

Average 7.6 7.0 - 0.6 0.005 24.9

The pH and AVS data facilitate classification of the Lake Way sediments in accordance with the new classification system to describe acid sulfate soil materials (Shand et al., 2018):

Sulfidic: soils (synonymous with PASS i.e. materials that may become severely acidic if allowed to oxidise) containing detectable sulfide with the following sub-division:

o Hypersulfidic: sulfidic soil material that is capable of severe acidification (pH less than 4) as a result of oxidation of contained sulfides.

o Hyposulfidic: sulfidic soil material that is not capable of severe acidification (pH less than 4) as a result of oxidation of contained sulfides.

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Reference: PES18020 Page 26 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Sulfuric: soil material that has a pH less than 4 (1:1 by weight in water, or in a minimum of water to permit measurement) when measured in dry season conditions as a result of the oxidation of sulfidic materials. These materials are synonymous with AASS, that is ASS materials that have been oxidised and are severely acidic.

Monosulfidic: soil material containing greater than or equal to 0.01% acid volatile sulphur (AVS). From current laboratory analytical data the soils at Lake Way cannot be classified as either Sulfidic or Sulfuric. AVS is a proxy for MBOs enriched with iron monosulfides (FeS) associated with drainage channels and/or lake floors. AVS above the limit of reporting (0.001%S) were found in two samples at 0.002%S and 0.008%S respectively well below the assessment level of 0.010%S. Consequently, the sediments/materials at Lake Way cannot be classified as MBO’s.

5.3 CRS and SPOCAS Testing All the samples were analysed using the SPOCAS method whilst, in addition, 12 samples were analysed using the CRS method:

SPOCAS: an acronym for suspension peroxide oxidation combined acidity and sulfur method; the acid-base accounting approach to calculate Net Acidity using a decision tree approach based on the values of pHKCl and pHOX. This method is a self-contained acid base accounting (ABA) test. The complete SPOCAS method provides 12 individual analytes (plus five calculated parameters), enabling the quantification of some key fractions in the soil sample, leading to better prediction of its likely acid-generating potential (DWER, 2015).

SCR: the symbol of the result from the chromium reducible sulphur (CRS) method. The SCR method provides a measure of RIS and is not subject to interferences from organic sulfur (DWER, 2015).

Table 5.4 details the CRS (inorganic sulfide) and SPOCAS assessment, including acid generating ability, acid neutralising capability, net acidity with and without consideration of neutralising capacity and lime rate required to counteract any potential and existing acidity.

5.3.1 Chromium Reducible Sulfur (CRS) This method measures the RIS content (by the chromium reducible sulfur SCR method) to estimate the potential sulfidic acidity. It is used to determine (non-sulfate) inorganic sulfur and is not subject to significant interferences from sulfur, either in organic matter or sulfate minerals e.g. gypsum (Sullivan et. al., 1999). The inorganic sulfur compounds measured by this method include pyrite and other iron disulfides; elemental sulphur, thiosulfate, tetrathionate, polythionites and acid volatile sulfides (e.g. greigite, mackinawite, amorphous FeS). Twelve samples were submitted for CRS testing:

Four samples reported a value below the LoR at 0.005%.

Only one sample (0.057%S) exceeded the Assessment Level of 0.030%S; the remaining 7 samples reported concentrations between 0.006%S and 0.018%S with an average of 0.011%S.

5.3.2 Acidity and Sulfur Trails pHKCl in 25 samples exceeded 7.5 varying between 7.5 and 8.4 and averaging 8.1. pHox exceed 7.1, varies between 7.1 and 8.2 with an average of 7.8. Differences (∆pH) between pHKCl and pHox vary between -0.2 and 0.9, averaging 0.3.

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Analyte

CR

S or

SC

R

pHK

Cl

pHox

sulfi

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- Ti

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Act

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Aci

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TA

A

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Pe

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TPA

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Sul

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KC

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Su

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Sul

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S PO

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C

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Cal

cium

(2

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Aci

d R

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Cal

cium

(23X

)

sulfi

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- Aci

d R

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alci

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(s-2

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M

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(2

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Pero

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(2

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Mag

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Exce

ss A

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sulfi

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- Exc

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Aci

d N

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Cap

acity

(s-2

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Net

Aci

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(sul

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units

)

Net

Aci

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ex

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AN

C

(sul

fur u

nits

)

Lim

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Rat

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AN

C

Lim

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e (D

EC, 2

015)

Units % pH UnitpH Unit %S %S %S %S %S %S %Ca %Ca %Ca %S %Mg %Mg %Mg %S %CaCO3 %S %S %S kgCaCO3/kgCaCO3/

LoR 0.005 0.1 0.1 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 1 -

Assessment Level 0.030 - - 0.030 0.030 0.030 - - - - - - - - - - - - - 0.030 - -

LocationASS 1 0.00 0.25 Silty CLAY underlying a thin salt crust, brown to dark brown, very fine to fine, wet <0.005 8.3 7.7 <0.020 <0.020 <0.020 0.814 0.674 <0.020 0.621 0.588 <0.020 <0.020 0.193 0.935 0.742 0.979 3.06 0.98 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY, brown, very fine to fine, wet - 8.2 7.9 <0.020 <0.020 <0.020 2.610 1.880 <0.020 2.250 1.940 <0.020 <0.020 0.233 0.568 0.335 0.442 1.64 0.52 <0.02 <0.02 <1 <1

0.90 1.10 Silty CLAY with minor small gypsum crystals, dense becoming very dense with depth, brown, very fine to fine, wet - 8.0 7.6 <0.020 <0.020 <0.020 0.860 0.664 <0.020 0.156 0.154 <0.020 <0.020 0.473 0.876 0.404 0.532 1.90 0.61 <0.02 <0.02 <1 <1

1.40 1.50 Silty CLAY with minor small gypsum crystals, very dense, brown to dark brown, very fine to fine, wet <0.005 8.1 7.4 <0.020 <0.020 <0.020 0.682 0.510 <0.020 0.176 0.170 <0.020 <0.020 0.264 0.666 0.401 0.529 1.88 0.60 <0.02 <0.02 <1 <1

ASS 2 0.00 0.25 Silty CLAY underlying a thin salt crust, brown to dark brown, very fine to fine, wet 0.017 8.3 7.4 <0.020 <0.020 <0.020 9.500 7.420 <0.020 9.720 8.990 <0.020 <0.020 0.198 0.616 0.417 0.551 1.83 0.59 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY, brown, very fine to fine, wet - 8.2 7.9 <0.020 <0.020 <0.020 7.630 6.360 <0.020 7.400 7.440 0.034 0.027 0.238 0.607 0.369 0.486 1.75 0.56 <0.02 <0.02 <1 <1

0.90 1.10 Silty CLAY with minor small gypsum crystals, dense becoming very dense with depth, brown, very fine to fine, wet 0.008 8.0 7.1 <0.020 <0.020 <0.020 3.420 2.670 <0.020 3.120 2.830 <0.020 <0.020 0.296 0.662 0.367 0.484 1.62 0.52 <0.02 <0.02 <1 <1

1.40 1.50 Silty CLAY with minor small gypsum crystals and minor black speckles, very dense, brown to dark brown, very fine to fine, wet 0.007 8.0 7.4 <0.020 <0.020 <0.020 3.770 2.990 <0.020 3.600 3.220 <0.020 <0.020 0.311 0.635 0.324 0.428 1.44 0.46 <0.02 <0.02 <1 <1

ASS 3 0.00 0.25 Silty CLAY underlying a thin salt crust, brown, very fine to fine, wet 0.008 8.0 7.6 <0.020 <0.020 <0.020 1.890 1.590 <0.020 1.330 1.220 <0.020 <0.020 0.442 0.854 0.412 0.544 1.84 0.59 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY, brown, very fine to fine, wet (sample radiate heat) - 8.2 8.1 <0.020 <0.020 <0.020 0.641 0.508 <0.020 0.084 0.082 <0.020 <0.020 0.332 0.608 0.276 0.364 1.44 0.46 <0.02 <0.02 <1 <1

0.90 1.10 Silty CLAY with minor small gypsum crystals and minor black speckles, dense, brown to dark brown, very fine to fine, wet <0.005 7.5 7.7 <0.020 <0.020 <0.020 0.939 0.642 <0.020 0.048 0.054 <0.020 <0.020 0.587 0.886 0.299 0.394 1.73 0.55 <0.02 <0.02 <1 <1

ASS 4 0.00 0.25 Silty CLAY underlying a thin salt crust, brown, very fine to fine, wet; MBO at surface 4-6mm thick 0.057 8.0 8.0 <0.020 <0.020 <0.020 1.750 0.145 <0.020 1.030 0.084 <0.020 <0.020 0.472 0.199 <0.020 <0.020 0.71 0.23 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY, brown, very fine to fine, wet - 8.1 8.1 <0.020 <0.020 <0.020 0.808 0.598 <0.020 0.201 0.191 <0.020 <0.020 0.273 0.577 0.304 0.401 1.53 0.49 <0.02 <0.02 <1 <1

0.90 1.10 Silty CLAY with minor small gypsum crystals, dense, brown, very fine to fine, wet - 8.0 8.1 <0.020 <0.020 <0.020 0.838 0.589 <0.020 0.098 0.092 <0.020 <0.020 0.392 0.635 0.243 0.320 1.53 0.49 <0.02 <0.02 <1 <1

ASS 5 0.00 0.25 Silty CLAY underlying a thin salt crust, brown to dark brown, very fine to fine, wet, MBO at surface 4-8mm thick 0.012 8.1 7.9 <0.020 <0.020 <0.020 2.200 1.820 <0.020 1.530 1.430 <0.020 <0.020 0.454 0.830 0.376 0.496 1.66 0.53 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY with minor small gypsum crystals, dense, brown, very fine to fine, wet (sample radiate heat) - 8.3 8.2 <0.020 <0.020 <0.020 0.827 0.611 <0.020 0.162 0.148 <0.020 <0.020 0.360 0.758 0.399 0.526 1.89 0.60 <0.02 <0.02 <1 <1

0.50 0.75 Silty CLAY with minor small gypsum crystals, very dense, brown to dark brown, very fine to fine, wet (sample radiate heat) <0.005 8.1 8.0 <0.020 <0.020 <0.020 0.885 0.610 <0.020 0.117 0.099 <0.020 <0.020 0.412 0.568 0.156 0.205 1.05 0.34 <0.02 <0.02 <1 <1

ASS 6 0.00 0.25 Silty CLAY underlying a thin salt crust, brown, very fine to fine, wet; MBO at surface 2-6mm thick 0.006 8.1 8.0 <0.020 <0.020 <0.020 1.450 1.170 <0.020 0.779 0.743 <0.020 <0.020 0.370 0.850 0.479 0.632 1.98 0.63 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY with minor small gypsum crystals, dense, brown, very fine to fine, wet (sample radiate heat) - 8.1 7.9 <0.020 <0.020 <0.020 1.120 0.811 <0.020 0.445 0.404 <0.020 <0.020 0.328 0.714 0.386 0.508 1.67 0.53 <0.02 <0.02 <1 <1

0.90 1.10 Silty CLAY with minor small gypsum crystals, becoming very dense, brown to dark brown, very fine to fine, wet - 8.0 7.8 <0.020 <0.020 <0.020 2.090 1.590 <0.020 1.500 1.420 <0.020 <0.020 0.305 0.643 0.338 0.446 1.46 0.47 <0.02 <0.02 <1 <1

ASS 7 0.00 0.25 Silty CLAY with small gypsum crystals, brown to dark brown, very fine to fine, dry 0.018 8.3 7.8 <0.020 <0.020 <0.020 11.000 10.000 <0.020 13.900 11.700 <0.020 <0.020 0.085 0.379 0.294 0.388 2.47 0.79 <0.02 <0.02 <1 <1

0.25 0.50 Silty CLAY with small gypsum crystals, brown, dense, very fine to fine, dry - 8.4 8.0 <0.020 <0.020 <0.020 1.080 0.998 <0.020 0.142 0.149 <0.020 <0.020 0.475 0.777 0.302 0.398 1.44 0.46 <0.02 <0.02 <1 <1

0.90 1.10 Silty CLAY with small gypsum crystals, brown, dense becoming very dense, very fine to fine, dry - 8.2 8.2 <0.020 <0.020 <0.020 1.130 0.978 <0.020 0.826 0.751 <0.020 <0.020 0.215 0.580 0.365 0.481 1.80 0.58 <0.02 <0.02 <1 <1

1.40 1.50 Silty CLAY with small gypsum crystals, brown, dense becoming very dense, very fine to fine, dry - 7.9 7.5 <0.020 <0.020 <0.020 1.470 1.490 0.021 0.245 0.251 <0.020 <0.020 0.868 1.320 0.457 0.602 1.69 0.54 <0.02 0.02 <1 <1

1.90 2.00 Silty CLAY with small gypsum crystals, brown, dense becoming very dense, very fine to fine, dry - 8.0 7.3 <0.020 <0.020 <0.020 0.859 0.760 <0.020 0.082 0.081 <0.020 <0.020 0.616 0.997 0.382 0.503 1.72 0.55 <0.02 <0.02 <1 <1

Notes: 2.4 Detection: concentration exceeds Limit of Reporting LoR.

2.4 Indicate exceedance of Assessment Level.Lime needed (kg CaCO3/m

3 soil) = Bulk density soil (ton/m3 = 1.6) x Net acidity (S% x 30.59) x 1.028 x safety factor (=2.0) x 100/ENV (=60%)

Calcium Values Magnesium ValuesAcid Neutralising

Capacity Acid Base Accounting

Sample Number

Depth (from)

Depth (to) Sample Description (preliminary regional sampling event across lake)

Work Order/Date: EB1904386, 4 March 2019

Table 5.4: CRS and SPOCAS Analytical Data.Chromium Reducible Sulphur

SPOCAS

pH Acidity Trail Sulfur Trail

Lake surface adjacent to causeway

Lake surface adjacent to causeway

Williamson Pit (cut face)

Lake surface adjacent to causeway

Lake surface adjacent to causeway

Lake surface adjacent to causeway

Lake surface adjacent to causeway

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Reference: PES18020 Page 28 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

The acidity trail, including sulfidic-Titratable Actual Acidity, sulfidic-Titratable Peroxide Acidity and sulfidic-Titratable Sulfidic Acidity, reported concentrations below the LoR of 0.02%S as pHKCl > 6.5. Consequently there is no actual acidity and/or retained in any of the samples. The sulphur trail, Peroxide Oxidisable Sulfur (SPOS - predominantly sulfides) exceeds the LoR (<0.020%S) in only one sample which essentially corroborates the CRS determinations. The samples contain large concentrations of Peroxide Sulfur (SP) which reflects the presence of soluble and exchangeable sulfur, sulfate from gypsum, sulfate from oxidation of sulfides and sulfur released by the breakdown of organic matter. In all samples except one SP exceeds SKCl resulting in negative SPOS (SPOS = SP – SKCl) values.

5.3.3 Acid Neutralizing Capacity (ANC) The Acid Neutralising Capacity (ANC) is a measure of the inherent ability of a sediment to buffer acidity and resist the lowering of the pH. In the analysis of ASS materials, ANC is only considered to be effective when the pHKCl of the TAA extract is greater than or equal to 6.5 which is the case in all the samples submitted during this investigation. Sediments contain ANC between 0.2%S and 1.0%S with an average of 0.5%S.

5.3.4 Metal Leachability As the assessment endpoints are for ecosystem protection, leachable (total) metal concentrations were determined by ALS Environmental Laboratory on 15 samples of sediment (Table 5.5):

Cadmium and Selenium were not present above the analytical LoR.

Excluding Arsenic (in two samples) and Nickel (in three samples), Chromium, Copper, Lead, Manganese, Vanadium Zinc, Thorium, Uranium and Lithium are present in concentrations well below the Interim Sediment Quality Guidelines (ISQG) Low Level: probable effects concentrations below which biological effects would rarely occur (ANZECC and ARMCANZ, 2000).

Arsenic is present in the lake sediments at concentrations between 5mg/kg and 32mg/kg averaging 11mg/kg (ISQG Low is at 20mg/kg and ISQG High at 70mg/kg; the High Level: probable effects concentrations below which biological effects would possibly occur.

Nickel is present in the lake sediments at concentrations between 10mg/kg and 27mg/kg averaging 17mg/kg (ISQG Low is at 21mg/kg and ISQG High at 52mg/kg; the High Level: probable effects concentrations below which biological effects would possibly occur.

Subsequently, dissolved metal concentrations (Table 5.6) were determined in laboratory prepared leachates to ascertain which heavy metals may mobilise should there be oxidation of the excavated materials and/or the materials in the cone of depression surrounding the trenches. The concentrations of the dissolved metals were not compared to any guideline and/or trigger value in the absence of appropriate guidelines for these hyper-saline environments. Dissolved metals in the DI water leach with a pH between 7.2 and 7.7:

Arsenic, Cadmium, Chromium, Copper, Lead, Nickel, Selenium, Thorium and Zinc were not present above the analytical LoR.

Vanadium (1 sample at 0.01mg/L), Uranium (7 samples between 0.001mg/L and 0.014mg/L), Manganese (5 samples between 0.01mg/L and 0.32mg/L) and Aluminium (9 samples between 0.3mg/L and 2.0mg/L) were present in some leachates.

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Sample Type:

Work Group:

Date:

Ars

enic

, As

Cad

miu

m, C

d

Chr

omiu

m, C

r

Cob

alt,

Co

Cop

per,

Cu

Iron,

Fe

Lead

, Pb

Man

gane

se, M

n

Nic

kel,

Ni

Sele

nium

, Se

Vana

dium

, V

Zinc

, Zn

Thor

ium

, Th

Ura

nium

, U

Lith

ium

, Li

% % %

0.1 0.5 0.5 5 1 2 2 5 50 5 5 2 5 5 5 0.1 0.1 0.1

ISQG-Low - - - 20 1 80 - 65 - 50 - 21 - - 200 - - -

ISQG-High - - - 70 10 370 - 270 - 220 - 52 - - 410 - - -

Sample ID Depth (m)

ASS 1 0.00-0.25 30 0.9 0.5 6 <1 76 5 26 33,000 5 134 15 <5 86 33 5.2 17.4 5.6

0.25-0.50 - - - - - - - - - - - - - - - - - -

1.00-1.25 - - - - - - - - - - - - - - - - - -

1.25-1.50 19 0.7 <0.5 5 <1 56 15 28 34,400 9 271 19 <5 74 25 4.8 9.6 2.7

ASS 2 0.00-0.25 18 <0.5 <0.5 9 <1 35 5 14 17,300 <5 142 10 <5 43 13 2.2 5.2 2.4

0.25-0.50 - - - - - - - - - - - - - - - - - -

1.00-1.25 29 0.5 <0.5 6 <1 42 12 22 25,300 8 526 12 <5 56 20 3.7 9.4 2.5

1.25-1.50 24 <0.5 <0.5 6 <1 49 11 37 44,200 11 212 19 <5 93 32 5.9 11.6 2.7

ASS 3 0.00-0.25 21 1.0 0.6 8 <1 60 7 26 29,900 8 400 14 <5 68 24 3.3 6.7 2.6

0.25-0.50 - - - - - - - - - - - - - - - - - -

1.00-1.25 22 0.9 0.5 8 <1 56 30 36 48,700 14 406 27 <5 104 40 7.0 18.3 3.6

ASS 4 0.00-0.25 29 1.4 0.8 26 <1 59 16 28 34,500 8 406 19 <5 84 24 3.8 11.4 3.6

0.25-0.50 - - - - - - - - - - - - - - - - - -

1.00-1.25 24 0.6 <0.5 7 <1 66 9 32 40,500 15 1,320 18 <5 87 30 5.1 14.4 2.6

ASS 5 0.00-0.25 23 0.6 <0.5 10 <1 68 7 29 30,700 7 540 16 <5 72 22 3.4 10.2 2.4

0.25-0.50 - - - - - - - - - - - - - - - - - -

0.50-0.75 23 3.7 2.2 <5 <1 10 <2 50 18,500 <5 962 17 <5 54 6 0.2 3.0 0.3

ASS 6 0.00-0.25 22 1.5 0.8 12 <1 66 5 23 27,700 7 523 15 <5 62 22 3.7 11.0 2.4

0.25-0.50 - - - - - - - - - - - - - - - - - -

0.50-0.75 21 1.3 0.7 32 <1 79 7 26 35,400 10 296 21 <5 76 27 4.2 14.2 2.2

ASS 7 0.00-0.25 26 0.8 <0.5 <5 <1 41 4 15 20,000 <5 136 11 <5 53 18 3.1 10.6 3.5

0.25-0.50 - - - - - - - - - - - - - - - - - -

1.00-1.25 - - - - - - - - - - - - - - - - - -

1.25-1.50 - - - - - - - - - - - - - - - - - -

1.50-2.00 12 1.9 1.1 5 <1 55 14 29 30,600 7 224 21 <5 66 22 3.8 7.3 2.2

Minimum 12 0.5 <0.5 5 - 10 4 14 17,300 5 134 10 - 43 6 0.2 3.0 0.3

Maximum 30 3.7 2.2 32 - 79 30 50 48,700 15 1,320 27 - 104 40 7.0 18.3 5.6

Average 23 1.2 0.9 11 - 55 11 28 31,380 9 433 17 - 72 24 4.0 10.7 2.8

Std Dev 5 0.9 0.6 8 - 18 7 9 8,994 3 327 4 - 17 8 1.6 4.2 1.1

Notes: 2.4 Detection: concentration exceeds Limit of Reporting LoR.

2.4 Indicate exceedance of Assessment Level.

Table 5.5: Leachable Metals

Analyte

Sediment

EB1904386

Monday, 4 March 2019

Assessment Level (DWER, 2014)

Units

LoR

Total Metals

mg/kg

Moi

stur

e C

onte

nt

Org

anic

Mat

ter

Tota

l Org

anic

Car

bon,

TO

C

Page 30: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Sample Type:

Work Group:

Date:

Alu

min

ium

, A

l

Ars

enic

, A

s

Cad

miu

m,

Cd

Ch

rom

ium

, C

r

Co

bal

t, C

o

Co

pp

er,

Cu

Iro

n,

Fe

Lea

d,

Pb

Lit

hiu

m,

Li

Man

gan

ese,

Mn

Nic

kel,

Ni

Sel

eniu

m,

Se

Th

ori

um

, T

h

Ura

niu

m,

U

Van

adiu

m,

V

Zin

c, Z

n

0.1 0.005 0.001 0.01 0.010 0.0100 0.05 0.0100 0.001 0.01 0.01 0.01 0.001 0.001 0.01 0.100

Marine Water: 95% Species Protection Level (Analogue) ID ID 0.0055 0.03 0.001 0.0013 ID 0.0044 ID ID 0.07 ID ID ID 0.10 0.015

Sample ID Depth (m) Note: Leachable Metals by ICP-MS: limit of reporting raised due to matrix interferences.

DI Water Leachate (pH 7.2 to 7.7)

ASS 1 0.00-0.25 1.8 <0.005 <0.001 <0.01 ---- <0.01 2.4 <0.01 0.002 0.02 <0.01 <0.01 <0.001 0.002 0.01 <0.1

1.00-1.25 2.0 <0.005 <0.001 <0.01 ---- <0.01 1.3 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

ASS 2 0.00-0.25 1.6 <0.005 <0.001 <0.01 ---- <0.01 2.0 <0.01 0.003 0.01 <0.01 <0.01 <0.001 0.002 <0.01 <0.1

1.00-1.25 1.0 <0.005 <0.001 <0.01 ---- <0.01 1.3 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 0.001 <0.01 <0.1

1.25-1.50 0.8 <0.005 <0.001 <0.01 ---- <0.01 1.0 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

ASS 3 0.00-0.25 1.1 <0.005 <0.001 <0.01 ---- <0.01 1.3 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

1.00-1.25 1.2 <0.005 <0.001 <0.01 ---- <0.01 1.4 <0.01 0.002 0.01 <0.01 <0.01 <0.001 0.001 <0.01 <0.1

ASS 4 0.00-0.25 0.9 <0.005 <0.001 <0.01 ---- <0.01 0.5 <0.01 0.002 0.32 <0.01 <0.01 <0.001 0.004 <0.01 <0.1

1.00-1.25 <0.1 <0.005 <0.001 <0.01 ---- <0.01 0.1 <0.01 0.001 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

ASS 5 0.00-0.25 <0.1 <0.005 <0.001 <0.01 ---- <0.01 0.1 <0.01 0.002 0.14 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

0.050-0.75 <0.1 <0.005 <0.001 <0.01 ---- <0.01 <0.05 <0.01 0.001 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

ASS 6 0.00-0.25 0.3 <0.005 <0.001 <0.01 ---- <0.01 0.2 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

0.50-0.75 <0.1 <0.005 <0.001 <0.01 ---- <0.01 0.1 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 0.001 <0.01 <0.1

ASS 7 0.00-0.25 <0.1 <0.005 <0.001 <0.01 ---- <0.01 0.1 <0.01 0.001 <0.01 <0.01 <0.01 <0.001 0.014 <0.01 <0.1

1.75-2.00 <0.1 <0.005 <0.001 <0.01 ---- <0.01 0.1 <0.01 0.002 <0.01 <0.01 <0.01 <0.001 <0.001 <0.01 <0.1

n 9 0 0 0 0 0 14 0 15 5 0 0 0 7 1 0

Minimum 0.3 - - - - - 0.1 - 0.001 0.01 - - - 0.001 0.01 -

Maximum 2.0 - - - - - 2.4 - 0.003 0.32 - - - 0.014 0.01 -

Average 1.2 - - - - - 0.8 - 0.002 0.10 - - - 0.004 - -

Alkaline Leachate (pH 9.0 to 9.3)

ASS 1 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 - <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.007 0.13 <0.5

1.00-1.25 3.3 <0.026 <0.005 <0.05 <0.05 <0.05 4.4 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.006 0.08 <0.5

ASS 2 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 <0.005 <0.05 <0.5

1.00-1.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 <0.005 <0.05 <0.5

1.25-1.50 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.006 0.08 <0.5

ASS 3 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 <0.005 <0.05 <0.5

1.00-1.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.011 0.08 <0.5

ASS 4 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 <0.005 0.09 <0.5

1.00-1.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 0.3 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.012 0.07 <0.5

ASS 5 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.009 <0.05 <0.5

0.050-0.75 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.010 <0.05 <0.5

ASS 6 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.010 <0.05 <0.5

0.50-0.75 <0.5 0.035 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.013 <0.05 <0.5

ASS 7 0.00-0.25 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 <0.005 0.08 <0.5

1.75-2.00 <0.5 <0.026 <0.005 <0.05 <0.05 <0.05 <0.26 <0.05 <0.005 <0.05 <0.05 <0.05 <0.005 0.006 0.06 <0.5

n 1 1 - - - - 2 - - - - - - 10 8 -

Minimum 3.3 0.035 - - - - 0.3 - - - - - - 0.006 0.06 -

Maximum 3.3 0.035 - - - - 4.4 - - - - - - 0.013 0.13 -

Average - - - - - - 2.3 - - - - - - 0.009 0.1 -

Acid Leach (pH 4.1 to 4.2)

ASS 1 0.00-0.25 3.9 <0.005 <0.001 0.09 ---- <0.01 0.8 <0.01 0.009 0.46 0.03 <0.01 <0.001 0.202 <0.01 <0.1

1.00-1.25 3.2 <0.005 <0.001 0.02 ---- <0.01 0.4 <0.01 0.005 0.16 0.05 <0.01 <0.001 0.093 <0.01 <0.1

ASS 2 0.00-0.25 5.0 <0.005 <0.001 0.04 ---- <0.01 1.1 <0.01 0.006 0.43 0.03 <0.01 <0.001 0.105 <0.01 0.2

1.00-1.25 4.1 <0.005 <0.001 0.02 ---- <0.01 0.5 <0.01 0.004 0.59 0.02 <0.01 <0.001 0.111 <0.01 <0.1

1.25-1.50 3.1 <0.005 <0.001 <0.01 ---- <0.01 1.2 <0.01 0.005 0.12 0.03 <0.01 <0.001 0.112 <0.01 0.2

ASS 3 0.00-0.25 3.9 <0.005 <0.001 0.04 ---- <0.01 1.3 <0.01 0.004 0.54 0.02 <0.01 <0.001 0.069 <0.01 0.1

1.00-1.25 3.4 <0.005 <0.001 0.01 ---- <0.01 0.9 <0.01 0.006 0.13 0.05 <0.01 <0.001 0.182 <0.01 0.1

ASS 4 0.00-0.25 5.1 0.026 0.001 0.04 ---- 0.02 18.8 0.01 0.005 9.76 0.08 <0.01 <0.001 0.100 0.03 0.1

1.00-1.25 4.2 <0.005 <0.001 0.02 ---- <0.01 1.2 <0.01 0.004 1.12 0.02 <0.01 <0.001 0.141 <0.01 0.1

ASS 5 0.00-0.25 4.4 0.006 <0.001 0.02 ---- <0.01 0.5 <0.01 0.004 4.83 0.05 <0.01 <0.001 0.112 <0.01 <0.1

0.050-0.75 10.2 <0.005 <0.001 <0.01 ---- <0.01 0.1 <0.01 0.002 0.54 0.04 <0.01 <0.001 0.071 <0.01 <0.1

ASS 6 0.00-0.25 5.8 0.006 <0.001 0.05 ---- <0.01 0.6 <0.01 0.007 0.77 0.04 <0.01 <0.001 0.129 <0.01 <0.1

0.50-0.75 3.9 0.018 <0.001 0.02 ---- <0.01 0.4 <0.01 0.005 0.36 0.03 <0.01 <0.001 0.178 <0.01 <0.1

ASS 7 0.00-0.25 5.8 <0.005 <0.001 0.07 ---- <0.01 0.8 <0.01 0.005 0.76 0.03 <0.01 <0.001 0.190 <0.01 0.2

1.75-2.00 3.7 <0.005 <0.001 0.02 ---- <0.01 0.5 <0.01 0.005 0.12 0.11 <0.01 0.001 0.095 <0.01 <0.1

n 15 4 1 13 - 1 15 1 15 15 15 - 1 15 1 7

Minimum 3.1 0.006 0.001 0.01 - 0.02 0.1 0.01 0.002 0.12 0.02 - 0.001 0.069 0.03 0.1

Maximum 10.2 0.026 0.001 0.09 - 0.02 18.8 0.01 0.009 9.76 0.11 - 0.001 0.202 0.03 0.2

Average 4.6 0.014 - 0.04 - - 1.9 - 0.005 1.38 0.04 - - 0.126 0.0 0.1

Notes: 2.4 Detection: concentration exceeds Limit of Reporting LoR.

2.4 Indicate exceedance of Assessment Level.

Analyte

Units mg/L

LoR

Table 5.6: Metals in Laboratory Leachates

Laboratory Leachate

EB1904386

Monday, 4 March 2019

Dissolved Metals

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Reference: PES18020 Page 31 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

Iron (between 0.1mg/L and 2.4mg/L) and Lithium (between 0.001mg/L and 0.003mg/L) were present in all the leachates.

The concentrations in these leachates are at levels similar to those in the brine in the Williamson Pit lake. Dissolved metals in the alkaline leach with a pH between 9.0 and 9.3:

Cadmium, Chromium, Cobalt, Copper, Lead, Lithium, Manganese, Nickel, Selenium, Thorium and Zinc were not present above the analytical LoR.

Aluminium (in 1 sample at 3.3mg/L), Arsenic (in 1 sample at 0.035mg/L), Iron (in 2 samples at 0.3mg/L and 4.4mg/L), Uranium (in 10 samples between 0.006mg/L and 0.013mg/L) and Vanadium (in 8 samples between 0.06mg/L and 0.13mg/L) were present in some leachates.

Dissolved metals in the acid leach with a pH between 4.1 and 4.2:

Only Selenium was not present above the analytical LoR.

Arsenic (in 4 samples between 0.006mg/L and 0.026mg/L), Cadmium (in 1 sample at 0.001mg/L), Copper (in 1 sample at 0.02mg/L), Lead (in 1 sample at 0.01mg/L), Thorium (in 1 sample at 0.001mg/L), Vanadium (in 1 sample at 0.03mg/L) and Zinc (in 7 samples between 0.1mg/L and 0.2mg/L) were present in some leachates.

Aluminium (between 3.1mg/L and 10.2mg/L), Chromium (between 0.01mg/L and 0.09mg/L), Iron (between 0.1mg/L and 18.8mg/L), Lithium (between 0.002mg/L and 0.009mg/L), Manganese (between 01.2mg/L and 9.76mg/L), Nickel (between 0.02mg/L and 0.11mg/L) and Uranium (between 0.069mg/L and 0.202mg/L) were present in all the leachates.

The amount of uranium found in the soil samples ranges between 3mg/kg and 18.3mg/kg, averaging 10.7mg/kg. To put that into perspective, the average in the earth’s crust is about 2.8mg/kg, the average found in granite is about 4mg/kg and the average in volcanic rock is in the range 20mg/kg to about 200mg/kg. Uranium in the leachates vary between 0.001mg/L and 0.202mg/L in the acid leach marginally above the trigger value (low risk) for uranium in livestock drinking water at 0.200mg/L. None of the total uranium results reaches a geochemical abundance index (GAI) value of 3 (which for uranium would correspond to approximately 28 mg/kg); as a general guide, a GAI of 3 or above is considered significant and such an enrichment may warrant further examination.

5.4 ASS Assessment Summary In summary:

The lake sediments occur in a fairly consistent and homogenous profile comprising brown and red brown fine grained silty sandy clay and clay overlying weathered basement/basalt varying between 1m along the western shore to deeper than 30m in the east where the paleochannel prevails.

A visual inspection of the Williamson Pit (mine between 2005 and 2006) and trenches within the footprint of the development envelope for the demonstration plant exhibited no evidence of acidification in the sediments and soils in the sidewalls and brine in the pit lake. The brine in the pit lake has a pH around 7 with very large concentrations of sodium, chloride, potassium and sulfate.

The sediments have pHf between 7.3 and 8.3, averaging 7.6, well above the assessment (trigger) level of 4 indicative of brine-logged alkaline un-oxidised poorly drained conditions and absence of AASS whilst pHfox range between 5.8 and 8.1, averaging 7.0, well above the assessment level of 3. The difference of >1 (∆pH) between pHf and pHfox in seven samples coupled with all samples

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Reference: PES18020 Page 32 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

having strong to extreme reactions with peroxide suggest there is a potential for sulfide materials to be present hence the need for further laboratory testing to assess the potential for acid generation.

From current laboratory analytical data the sediments within the footprint of the demonstration plant cannot be classified as either Sulfidic or Sulfuric. AVS as a proxy for MBOs enriched with iron monosulfides (FeS) above the limit of reporting (0.001%S) were found in two samples at 0.002%S and 0.008%S respectively well below the assessment level of 0.010%S. Consequently, the sediments/materials cannot be classified as MBO’s either.

Chromium Reducible Sulfur (CRS) as a measure of potential sulfidic acidity (determine inorganic sulfur and not sulphur either in organic matter or sulfate minerals e.g. gypsum) indicated that:

Four out of 12 samples reported a value below the LoR at 0.005%.

Only one sample (0.057%S) exceeded the Assessment Level of 0.030%S; the remaining 7 samples reported concentrations between 0.006%S and 0.018%S with an average of 0.011%S.

pHKCl in 25 samples exceeded 7.5 varying between 7.5 and 8.4 and averaging 8.1 and pHox exceed 7.1, varies between 7.1 and 8.2 with an average of 7.8 indicating that there is no actual acidity and/or retained acidity in any of the samples.

Peroxide Oxidisable Sulfur (SPOS) corroborates the CRS determinations (low sulfur). The samples contain large concentrations of Peroxide Sulfur (SP) which reflects the presence of soluble and exchangeable sulfur, sulfate from gypsum, sulfate from oxidation of sulfides and sulfur released by the breakdown of organic matter. In all samples except one SP exceeds SKCl resulting in negative SPOS (SPOS = SP – SKCl) values.

Acid Neutralising Capacity (ANC) is a measure of the inherent ability of a sediment to buffer acidity and is only effective when pHKCl ≥ 6.5 which is the case in all the samples submitted during this investigation. Sediments contain ANC between 0.2%S and 1.0%S with an average of 0.5%S which exceeds any potential acidity from oxidation of sulfides (if any are present).

Total Organic Carbon concentrations vary between less than 0.5% and 2.2% averaging 0.9%

As the assessment endpoints are for ecosystem protection, leachable (total) metal concentrations were determined and except for a few marginal exceedances, the sediments contain heavy metals in concentrations well below the Interim Sediment Quality Guidelines (ISQG) Low Level indicating the probable effects concentrations are below levels where biological effects would rarely occur.

Dissolved metal concentrations in laboratory prepared leachates at a pH around 7 reflect concentrations currently measured in the brine; this scenario is likely to prevail due to the characteristics of the sediments and brines. Few metals leach under alkaline (pH > 9) conditions whilst more metals leach at larger concentrations under acidic (pH 4) conditions. It is highly unlikely that the environment at Lake Way will become acidic.

Taking cognisance of the above, there is no ASS acidity hazard and consequently ASS management is not required.

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Reference: PES18020 Page 33 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

6. Conclusion and Recommendations

6.1 Conclusion The investigation concluded that:

There are no acid sulfate soils within the footprint of the trenches for the proposed demonstration plant.

Consequently there is no risk of acidification and acid sulfate soil management will not be required.

6.2 Recommendations With regard to acid sulfate soils within the footprint of the proposed demonstration plant, no further investigation and assessment will be necessary.

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Reference: PES18020 Page 34 of 34 Date: March 2019 Site: Lake Way Demonstration Plant Title: Acid Sulfate Soil Investigation Revision No: 1

References Acid sulfate soil risk map from Australian Soil Resource Information System (ASRIS) (http://www.asris.csiro.au/themes/AcidSulfateSoils.html).

Australian and New Zealand Environment Conservation Council (ANZECC, 2000): Australian and New Zealand Guidelines for Fresh and Marine Water Quality, Volume 1.

Beard, J.S. 2002: Palaeogeography and drainage evolution in the Gibson and Great Victoria Deserts, Western Australia. Journal of the Royal Society of Western Australia, 85: 17-29.

Beard, J.S. 2003: Palaeodrainage and the geomorphic evolution of passive margins in Southwestern Australia. Zeitschrift für Geomorphologie, N F 47 (3): 273-288.

Bureau of Meteorology, 2015; Monthly Climate Statistics for Wiluna (Site No 013012). Viewed 19 February 2019, <www.bom.gov.au>.

Department of Water and Environment Regulation (DWER) 2015a: Identification and Investigation of Acid Sulfate Soils and Acidic Landscapes.

Department of Water and Environment Regulation (DWER) 2015b: Treatment and Management of Soil and Water in Acid Sulfate Soil Landscapes.

Groundwater Science, 2018: Lake Way Goldfields Salt Lake Project, Blackham Resources Tenements, SOP Resource Estimate.

Groundwater Science, 2018: Lake Way Playa Mineralisation Report.

Knight Piésold Consulting Engineers, 2018: Lake Way Project – Climatology and Hydrology Assessment, Rev A.

Knight Piésold Consulting Engineers, 2019: Lake Way Project – Updated Flood Study.

Magee, J.W., 2009: Palaeovalley Groundwater Resources in Arid and Semi-Arid Australia - A Literature Review. Geoscience Australia, Canberra.

Queensland Acid Sulfate Soils Investigation Team, 2004: Acid Sulfate Soils - Laboratory Methods Guidelines.

Salt Lake Potash, 2019: Lake Way Groundwater Modelling.

Shand, P, Appleyard, S, Simpson, SL, Degens, B, 2018: National Acid Sulfate Soils Guidance: Guidance for the Dewatering of Acid Sulfate Soils in Shallow Groundwater Environments, Department of Agriculture and Water Resources, Canberra, ACT.

Sullivan, L, Ward, N, Toppler, N and Lancaster, G, 2018: National Acid Sulfate Soils Guidance: National Acid Sulfate Soils Identification and Laboratory Methods Manual, Department of Agriculture and Water Resources, Canberra, ACT.

Sullivan, LA, Ward, NJ, Bush, RT, Toppler, NR, Choppala, G, 2018: National Acid Sulfate Soils Guidance: Overview and Management of Monosulfidic Black Ooze (MBO) accumulations in waterways and wetlands, Department of Agriculture and Water Resources, Canberra, ACT.

Sullivan, L, Ward, N, Toppler, N and Lancaster, G, 2018: National Acid Sulfate Soils Guidance: National Acid Sulfate Soils Sampling and Identification Methods Manual, Department of Agriculture and Water Resources, Canberra ACT.

Sullivan, L.A., Burton, E., Bush, R., Watling, K., Bush, M.D. (2008). Acid, Metal and Nutrient Mobilisation Dynamics of some MBOs and Sulfuric Soil Materials in the Lower Murray Region. Southern Cross GeoScience Report Number 108 (v.2).

Page 35: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Appendices Date: March 2019

Site: Lake Way 50kt/a Development Title: Acid Sulfate Soil Investigation Revision No: 1

Appendices

Appendix A: Laboratory Certificates.

Page 36: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Reference: PES14017 Appendices Date: March 2019

Site: Lake Way 50kt/a Development Title: Acid Sulfate Soil Investigation Revision No: 1

Appendix A: Laboratory Certificates

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Page 38: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision
Page 39: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Environmental

SAMPLE RECEIPT NOTIFICATION (SRN)Work Order : EB1903555

:: LaboratoryClient Environmental Division BrisbanePENDRAGON ENVIRONMENTAL

SOLUTIONS

: :ContactContact MR RYAN LAWRENCE Customer Services EB

:: AddressAddress 310 NEWCASTLE STREET

NORTHBRIDGE WESTERN

AUSTRALIA 6003

2 Byth Street Stafford QLD Australia

4053

:: E-mailE-mail [email protected] [email protected]

:: TelephoneTelephone +61 08 9382 8286 +61-7-3243 7222

:: FacsimileFacsimile +61 08 9382 8693 +61-7-3243 7218

::Project PES18020 Page 1 of 3

:Order number :Quote number EP2018PENENV0002 (EN/222)

:C-O-C number ---- :QC Level NEPM 2013 B3 & ALS QC Standard

Site : SLP

Sampler : RYAN LAWRENCE

DatesDate Samples Received : Issue Date : 13-Feb-201913-Feb-2019 08:45

Scheduled Reporting Date: 20-Feb-2019:Client Requested Due

Date

20-Feb-2019

Delivery DetailsMode of Delivery : :Carrier Intact.Security Seal

No. of coolers/boxes : :2 Temperature 4.4, 5.8°C - Ice present

: : 25 / 25FOAM ESKYReceipt Detail No. of samples received / analysed

General Comments

This report contains the following information:l

- Sample Container(s)/Preservation Non-Compliances

- Summary of Sample(s) and Requested Analysis

- Proactive Holding Time Report

- Requested Deliverables

l PLEASE RETAIN SAMPLES FOR FURTHER INSTRUCTIONSl Discounted Package Prices apply only when specific ALS Group Codes ('W', 'S', 'NT' suites) are referenced on COCs.

l Please direct any turn around / technical queries to the laboratory contact designated above.

l Sample Disposal - Aqueous (3 weeks), Solid (2 months ± 1 week) from receipt of samples.

l Analysis will be conducted by ALS Environmental, Brisbane, NATA accreditation no. 825, Site No. 818 (Micro site no. 18958).

l 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

Page 40: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

:Client PENDRAGON ENVIRONMENTAL SOLUTIONS

Work Order : EB1903555 Amendment 02 of 3:Page

13-Feb-2019:Issue Date

Sample Container(s)/Preservation Non-Compliances

All comparisons are made against pretreatment/preservation AS, APHA, USEPA standards.

l No sample container / preservation non-compliance exists.

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.

If no sampling time is provided, the sampling time will

default 00:00 on the date of sampling. If no sampling date

is provided, the sampling date will be assumed by the

laboratory and displayed in brackets without a time

component

SO

IL -

EA

003

pH

fie

ld/fox

SO

IL -

EA

038

Aci

d V

ola

tile

Su

lfur

SO

IL -

EA

055

-10

3

Mois

ture

Co

nte

nt

EB1903555-001 09-Feb-2019 00:00 ASS 1 0.00-0.25 ü

EB1903555-002 09-Feb-2019 00:00 ASS 1 0.25-0.50 ü

EB1903555-003 09-Feb-2019 00:00 ASS 1 1.0 ü

EB1903555-004 09-Feb-2019 00:00 ASS 1 1.5 ü

EB1903555-005 09-Feb-2019 00:00 ASS 2 0.00-0.25 ü

EB1903555-006 09-Feb-2019 00:00 ASS 2 0.25-0.50 ü

EB1903555-007 09-Feb-2019 00:00 ASS 2 1.0 ü ü ü

EB1903555-008 09-Feb-2019 00:00 ASS 2 1.5 ü

EB1903555-009 09-Feb-2019 00:00 ASS 3 0.00-0.25 ü

EB1903555-010 09-Feb-2019 00:00 ASS 3 0.25-0.50 ü

EB1903555-011 09-Feb-2019 00:00 ASS 3 1.0 ü ü ü

EB1903555-012 09-Feb-2019 00:00 ASS 4 0.00-0.25 ü

EB1903555-013 09-Feb-2019 00:00 ASS 4 0.25-0.50 ü

EB1903555-014 09-Feb-2019 00:00 ASS 4 1.0 ü

EB1903555-015 09-Feb-2019 00:00 ASS 5 0.00-0.25 ü ü ü

EB1903555-016 09-Feb-2019 00:00 ASS 5 0.25-0.50 ü

EB1903555-017 09-Feb-2019 00:00 ASS 5 0.75 ü

EB1903555-018 09-Feb-2019 00:00 ASS 6 0.00-0.25 ü ü ü

EB1903555-019 09-Feb-2019 00:00 ASS 6 0.25-0.50 ü

EB1903555-020 09-Feb-2019 00:00 ASS 6 0.75 ü

EB1903555-021 09-Feb-2019 00:00 ASS 7 0.00-0.25 ü

EB1903555-022 09-Feb-2019 00:00 ASS 7 0.25-0.50 ü

EB1903555-023 09-Feb-2019 00:00 ASS 7 1.0 ü

EB1903555-024 09-Feb-2019 00:00 ASS 7 1.5 ü

EB1903555-025 09-Feb-2019 00:00 ASS 7 2.0 ü

Matrix: SOIL

Client sample IDLaboratory sample

ID

Client sampling

date / time

Proactive Holding Time Report

Sample(s) have been received within the recommended holding times for the requested analysis.

Page 41: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

:Client PENDRAGON ENVIRONMENTAL SOLUTIONS

Work Order : EB1903555 Amendment 03 of 3:Page

13-Feb-2019:Issue Date

Requested Deliverables

CAREL VAN DER WESTHUIZEN

- A4 - AU Tax Invoice (INV) Email [email protected]

m

RYAN LAWRENCE

- *AU Certificate of Analysis - NATA (COA) Email [email protected]

- *AU Interpretive QC Report - DEFAULT (Anon QCI Rep) (QCI) Email [email protected]

- *AU QC Report - DEFAULT (Anon QC Rep) - NATA (QC) Email [email protected]

- A4 - AU Sample Receipt Notification - Environmental HT (SRN) Email [email protected]

- Chain of Custody (CoC) (COC) Email [email protected]

- EDI Format - ENMRG (ENMRG) Email [email protected]

- EDI Format - ESDAT (ESDAT) Email [email protected]

- EDI Format - XTab (XTAB) Email [email protected]

Page 42: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Form: VDC-DE-N-F-141.OP Revision 2Catalog: D000007848

Chain of Custody (CoC) DocumentationSampler:

Pendragon Environmental Solutions Mobile:Phone:

Project Manager (PM): e-mail analysis/report to:Job Number: Copy invoice to:Site: Results required by (date):

For Laboratory Use Only!

Cooler Seal Quote:Intact: Yes No N/A

Sample Temperature

Chilled Yes No

Lab ID Sample ID Matrix Date Time Type / Code Total

ASS 1 0.00-0.25 S 9-Feb-19 1 x

ASS 1 0.25-0.50 S 9-Feb-19 1 x

ASS 1 1.0 S 9-Feb-19 1 x

ASS 1 1.5 S 9-Feb-19 1 x

ASS 2 0.00-0.25 S 9-Feb-19 1 x

ASS 2 0.25-0.50 S 9-Feb-19 1 x

ASS 2 1.0 S 9-Feb-19 1 x x

ASS 2 1.5 S 9-Feb-19 1 x

ASS 3 0.00-0.25 S 9-Feb-19 1 x

ASS 3 0.25-0.50 S 9-Feb-19 1 x

ASS 3 1.0 S 9-Feb-19 1 x x

ASS 4 0.00-0.25 S 9-Feb-19 1 x

ASS 4 0.25-0.50 S 9-Feb-19 1 x

ASS 4 1.0 S 9-Feb-19 1 x

Name: Date: 11/02/2019 Name: :Date

Of: Time: Of: :Time

Name: Date: Name: :Date

Of: Time: Of: :TimeWater Container Codes: P = Unpreserved Plastic; N = Nitric Preserved Plastic; ORC = Nitric Preserved ORC; SH = Sodium Hydroxide/Cd Preserved; S = Sodium Hydroxide Preserveed Plastic; AG = Amber Glass Unpreserved; V = VOA Vial HCl Preserved; VS = VOA Vial Sulphuric Preserved; SG = Sulfuric Preserved Amber Glass; H = HCl preserved Plastic; HS = HCl preserved Speciation bottle; SP = Sulfuric Preserved Plastic; F = Formaldehyde Preserved Glass; Z = Zinc Acetate Preserved Bottle; E = EDTA Preserved Bottles; ST = Sterile Bottle; ASS = Plastic Bag for Acid Sulphate Soils; B = Unpreserved Bag. Page: OFNote: Job Number must be reflected on all invoices and statements. Attach copy of CoC to Invoice.

Please RETAIN Samples for further instructions

[email protected]

Ryan Lawrence 0430-310-0850430-310-085

Ryan Lawrence 0430-310-085Ryan Lawrence [email protected]

PES18020

Water and Environmental Scientists and Engineers

SLP ANALYSIS REQUIRED

pH (f

iedl

fox

reac

tion)

AVS

Relinguished By: Received By Method of Shipment

Notes: e.g. Highly contaminated samples,extra volume for QC or trace LORs

etc.

Courier:

Hand Delivery

1 1 1

Other:

Number of Eskys:

Pendragon Environmental Solutions

EP/014/16

Sample Information (S = Soil, Sed = Sediment, R = Rock, W=Water) Container Information

Comments/Special Handling/Storage or Disposal

Ryan Lawrence

Page 43: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

Form: VDC-DE-N-F-141.OP Revision 2Catalog: D000007848

Chain of Custody (CoC) DocumentationSampler:

Pendragon Environmental Solutions Mobile:Phone:

Project Manager (PM): e-mail analysis/report to:Job Number: Copy invoice to:Site: Results required by (date):

For Laboratory Use Only!

Cooler Seal Quote:Intact: Yes No N/A

Sample Temperature

Chilled Yes No

Lab ID Sample ID Matrix Date Time Type / Code Total

ASS 5 0.00-0.25 S 9-Feb-19 1 x x

ASS 5 0.25-0.50 S 9-Feb-19 1 x

ASS 5 0.75 S 9-Feb-19 1 x

ASS 6 0.00-0.25 S 9-Feb-19 1 x x

ASS 6 0.25-0.50 S 9-Feb-19 1 x

ASS 6 0.75 S 9-Feb-19 1 x

ASS 7 0.00-0.25 S 9-Feb-19 1 x

ASS 7 0.25-0.50 S 9-Feb-19 1 x

ASS 7 1.0 S 9-Feb-19 1 x

ASS 7 1.5 S 9-Feb-19 1 x

ASS 7 2.0 S 9-Feb-19 1 x

Name: Date: 11/02/2019 Name: :Date

Of: Time: Of: :Time

Name: Date: Name: :Date

Of: Time: Of: :TimeWater Container Codes: P = Unpreserved Plastic; N = Nitric Preserved Plastic; ORC = Nitric Preserved ORC; SH = Sodium Hydroxide/Cd Preserved; S = Sodium Hydroxide Preserveed Plastic; AG = Amber Glass Unpreserved; V = VOA Vial HCl Preserved; VS = VOA Vial Sulphuric Preserved; SG = Sulfuric Preserved Amber Glass; H = HCl preserved Plastic; HS = HCl preserved Speciation bottle; SP = Sulfuric Preserved Plastic; F = Formaldehyde Preserved Glass; Z = Zinc Acetate Preserved Bottle; E = EDTA Preserved Bottles; ST = Sterile Bottle; ASS = Plastic Bag for Acid Sulphate Soils; B = Unpreserved Bag. Page: OFNote: Job Number must be reflected on all invoices and statements. Attach copy of CoC to Invoice.

Ryan Lawrence 0430-310-0850430-310-085

Water and Environmental Scientists and EngineersRyan Lawrence 0430-310-085Ryan Lawrence [email protected]

SLP ANALYSIS REQUIRED

Comments/Special Handling/Storage or Disposal

pH (f

ield

fox

reac

tion)

EA0

03

AVS

EA03

8

PES18020 [email protected]

Notes: e.g. Highly contaminated samples,extra volume for QC or trace LORs

etc.

EP/014/16

Please RETAIN Samples for further instructions

Sample Information (S = Soil, Sed = Sediment, R = Rock, W=Water) Container Information

Relinguished By: Received By Method of Shipment

Ryan Lawrence Courier:

Pendragon Environmental Solutions

Other:

Hand Delivery

1 1 1Number of Eskys:

Page 44: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

0 0.00 True

Environmental

CERTIFICATE OF ANALYSISWork Order : Page : 1 of 7EB1903555

:: LaboratoryClient PENDRAGON ENVIRONMENTAL SOLUTIONS Environmental Division Brisbane

: :ContactContact MR RYAN LAWRENCE Customer Services EB

:: AddressAddress 310 NEWCASTLE STREET

NORTHBRIDGE WESTERN AUSTRALIA 6003

2 Byth Street Stafford QLD Australia 4053

:Telephone +61 08 9382 8286 :Telephone +61-7-3243 7222

:Project PES18020 Date Samples Received : 13-Feb-2019 08:45

:Order number Date Analysis Commenced : 18-Feb-2019

:C-O-C number ---- Issue Date : 20-Feb-2019 08:09

Sampler : RYAN LAWRENCE

Site : SLP

Quote number : EN/222

25:No. of samples received

25:No. of samples analysed

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This document shall not be reproduced, except in full.

This Certificate of Analysis contains the following information:

l General Comments

l Analytical Results

Additional information pertinent to this report will be found in the following separate attachments: Quality Control Report, QA/QC Compliance Assessment to assist with

Quality Review and Sample Receipt Notification.

SignatoriesThis document has been electronically signed by the authorized signatories below. Electronic signing is carried out in compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Ben Felgendrejeris Senior Acid Sulfate Soil Chemist Brisbane Acid Sulphate Soils, Stafford, QLD

Ben Felgendrejeris Senior Acid Sulfate Soil Chemist Brisbane Inorganics, 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

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2 of 7:Page

Work Order :

:Client

EB1903555

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

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.

Where a result is required to meet compliance limits the associated uncertainty must be considered. Refer to the ALS Contact for details.

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.

~ = Indicates an estimated value.

Key :

ASS: EA003 (NATA Field and F(ox) screening): pH F(ox) Reaction Rate: 1 - Slight; 2 - Moderate; 3 - Strong; 4 - Extremel

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3 of 7:Page

Work Order :

:Client

EB1903555

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 2 0.00-0.25ASS 1 1.5ASS 1 1.0ASS 1 0.25-0.50ASS 1 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1903555-005EB1903555-004EB1903555-003EB1903555-002EB1903555-001UnitLORCAS NumberCompound

Result Result Result Result Result

EA003 :pH (field/fox)

7.6 7.4 7.3 7.4 7.8pH Unit0.1----pH (F)

6.6 6.1 6.1 5.8 6.1pH Unit0.1----pH (Fox)

3 3 3 3 3Reaction Unit1----Reaction Rate

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4 of 7:Page

Work Order :

:Client

EB1903555

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 3 0.25-0.50ASS 3 0.00-0.25ASS 2 1.5ASS 2 1.0ASS 2 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1903555-010EB1903555-009EB1903555-008EB1903555-007EB1903555-006UnitLORCAS NumberCompound

Result Result Result Result Result

EA003 :pH (field/fox)

7.6 7.5 7.4 7.5 7.5pH Unit0.1----pH (F)

7.5 5.8 6.4 6.6 8.0pH Unit0.1----pH (Fox)

4 3 3 4 4Reaction Unit1----Reaction Rate

EA038: Acid Volatlile Sulfur

---- 0.008 ---- ---- ----%0.001----Acid Volatile Sulfur

EA055: Moisture Content (Dried @ 105-110°C)

---- 29.6 ---- ---- ----%0.1----Moisture Content

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5 of 7:Page

Work Order :

:Client

EB1903555

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 5 0.00-0.25ASS 4 1.0ASS 4 0.25-0.50ASS 4 0.00-0.25ASS 3 1.0Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1903555-015EB1903555-014EB1903555-013EB1903555-012EB1903555-011UnitLORCAS NumberCompound

Result Result Result Result Result

EA003 :pH (field/fox)

7.5 7.8 7.6 7.7 7.6pH Unit0.1----pH (F)

6.6 7.4 8.0 8.0 7.5pH Unit0.1----pH (Fox)

3 4 4 4 4Reaction Unit1----Reaction Rate

EA038: Acid Volatlile Sulfur

<0.001 ---- ---- ---- <0.001%0.001----Acid Volatile Sulfur

EA055: Moisture Content (Dried @ 105-110°C)

26.4 ---- ---- ---- 19.0%0.1----Moisture Content

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6 of 7:Page

Work Order :

:Client

EB1903555

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 6 0.75ASS 6 0.25-0.50ASS 6 0.00-0.25ASS 5 0.75ASS 5 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1903555-020EB1903555-019EB1903555-018EB1903555-017EB1903555-016UnitLORCAS NumberCompound

Result Result Result Result Result

EA003 :pH (field/fox)

7.7 7.4 7.7 7.6 7.7pH Unit0.1----pH (F)

8.1 8.0 7.0 7.5 6.8pH Unit0.1----pH (Fox)

4 4 4 4 4Reaction Unit1----Reaction Rate

EA038: Acid Volatlile Sulfur

---- ---- 0.002 ---- ----%0.001----Acid Volatile Sulfur

EA055: Moisture Content (Dried @ 105-110°C)

---- ---- 24.7 ---- ----%0.1----Moisture Content

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7 of 7:Page

Work Order :

:Client

EB1903555

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 7 2.0ASS 7 1.5ASS 7 1.0ASS 7 0.25-0.50ASS 7 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1903555-025EB1903555-024EB1903555-023EB1903555-022EB1903555-021UnitLORCAS NumberCompound

Result Result Result Result Result

EA003 :pH (field/fox)

8.3 7.7 7.8 7.3 7.4pH Unit0.1----pH (F)

6.7 7.8 7.9 7.1 6.2pH Unit0.1----pH (Fox)

3 4 4 4 3Reaction Unit1----Reaction Rate

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False

2 2.00True

Environmental

QUALITY CONTROL REPORTWork Order : EB1903555 Page : 1 of 3

:: LaboratoryClient Environmental Division BrisbanePENDRAGON ENVIRONMENTAL SOLUTIONS

:Contact MR RYAN LAWRENCE :Contact Customer Services EB

:Address 310 NEWCASTLE STREET

NORTHBRIDGE WESTERN AUSTRALIA 6003

Address : 2 Byth Street Stafford QLD Australia 4053

::Telephone +61 08 9382 8286 +61-7-3243 7222:Telephone

:Project PES18020 Date Samples Received : 13-Feb-2019

:Order number Date Analysis Commenced : 18-Feb-2019

:C-O-C number ---- Issue Date : 20-Feb-2019

Sampler : RYAN LAWRENCE

Site : SLP

Quote number : EN/222

No. of samples received 25:

No. of samples analysed 25:

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This document shall not be reproduced, except in full.

This Quality Control Report contains the following information:

l Laboratory Duplicate (DUP) Report; Relative Percentage Difference (RPD) and Acceptance Limits

l Method Blank (MB) and Laboratory Control Spike (LCS) Report ; Recovery and Acceptance Limits

l Matrix Spike (MS) Report; Recovery and Acceptance Limits

SignatoriesThis document has been electronically signed by the authorized signatories below. Electronic signing is carried out in compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Ben Felgendrejeris Senior Acid Sulfate Soil Chemist Brisbane Acid Sulphate Soils, Stafford, QLD

Ben Felgendrejeris Senior Acid Sulfate Soil Chemist Brisbane Inorganics, 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

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2 of 3:Page

Work Order :

:Client

EB1903555

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

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.

Anonymous = Refers to samples which are not specifically part of this work order but formed part of the QC process lot

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

RPD = Relative Percentage Difference

# = Indicates failed QC

Key :

Laboratory Duplicate (DUP) Report

The quality control term Laboratory Duplicate refers to a randomly selected intralaboratory split. Laboratory duplicates provide information regarding method precision and sample heterogeneity. The permitted ranges

for the Relative Percent Deviation (RPD) of Laboratory Duplicates are specified in ALS Method QWI -EN/38 and are dependent on the magnitude of results in comparison to the level of reporting: Result < 10 times LOR:

No Limit; Result between 10 and 20 times LOR: 0% - 50%; Result > 20 times LOR: 0% - 20%.

Sub-Matrix: SOIL Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EA003 :pH (field/fox) (QC Lot: 2191724)

EA003: pH (F) ---- 0.1 pH Unit 7.6 7.6 0.00 0% - 20%ASS 1 0.00-0.25 EB1903555-001

EA003: pH (Fox) ---- 0.1 pH Unit 6.6 6.5 1.53 0% - 20%

EA003: pH (F) ---- 0.1 pH Unit 7.5 7.5 0.00 0% - 20%ASS 3 0.25-0.50 EB1903555-010

EA003: pH (Fox) ---- 0.1 pH Unit 8.0 8.1 1.24 0% - 20%

EA003 :pH (field/fox) (QC Lot: 2191725)

EA003: pH (F) ---- 0.1 pH Unit 8.3 8.3 0.00 0% - 20%ASS 7 0.00-0.25 EB1903555-021

EA003: pH (Fox) ---- 0.1 pH Unit 6.7 6.5 3.03 0% - 20%

EA003: pH (F) ---- 0.1 pH Unit 6.7 6.8 1.48 0% - 20%Anonymous EB1903798-005

EA003: pH (Fox) ---- 0.1 pH Unit 4.1 3.8 7.59 0% - 20%

EA038: Acid Volatlile Sulfur (QC Lot: 2191708)

EA038: Acid Volatile Sulfur ---- 0.001 % 0.008 0.008 0.00 No LimitASS 2 1.0 EB1903555-007

EA055: Moisture Content (Dried @ 105-110°C) (QC Lot: 2191709)

EA055: Moisture Content ---- 0.1 % 29.6 29.9 1.11 0% - 20%ASS 2 1.0 EB1903555-007

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Method Blank (MB) and Laboratory Control Spike (LCS) Report

The quality control term Method / Laboratory Blank refers to an analyte free matrix to which all reagents are added in the same volumes or proportions as used in standard sample preparation. The purpose of this QC

parameter is to monitor potential laboratory contamination. The quality control term Laboratory Control Spike (LCS) refers to a certified reference material, or a known interference free matrix spiked with target

analytes. The purpose of this QC parameter is to monitor method precision and accuracy independent of sample matrix. Dynamic Recovery Limits are based on statistical evaluation of processed LCS.

Sub-Matrix: SOIL Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EA038: Acid Volatlile Sulfur (QCLot: 2191708)

EA038: Acid Volatile Sulfur ---- 0.001 % <0.001 88.50.17 % 9787

Matrix Spike (MS) ReportThe quality control term Matrix Spike (MS) refers to an intralaboratory split sample spiked with a representative set of target analytes. The purpose of this QC parameter is to monitor potential matrix effects on

analyte recoveries. Static Recovery Limits as per laboratory Data Quality Objectives (DQOs). Ideal recovery ranges stated may be waived in the event of sample matrix interference.

l No Matrix Spike (MS) or Matrix Spike Duplicate (MSD) Results are required to be reported.

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True

Environmental

QA/QC Compliance Assessment to assist with Quality ReviewWork Order : EB1903555 Page : 1 of 4

:: LaboratoryClient Environmental Division BrisbanePENDRAGON ENVIRONMENTAL SOLUTIONS

:Contact MR RYAN LAWRENCE Telephone : +61-7-3243 7222

:Project PES18020 Date Samples Received : 13-Feb-2019

Site : SLP Issue Date : 20-Feb-2019

RYAN LAWRENCE:Sampler No. of samples received : 25

:Order number No. of samples analysed : 25

This report is automatically generated by the ALS LIMS through interpretation of the ALS Quality Control Report and several Quality Assurance parameters measured by ALS. This automated

reporting highlights any non-conformances, facilitates faster and more accurate data validation and is designed to assist internal expert and external Auditor review. Many components of this

report contribute to the overall DQO assessment and reporting for guideline compliance.

Brief method summaries and references are also provided to assist in traceability.

Summary of Outliers

Outliers : Quality Control Samples

This report highlights outliers flagged in the Quality Control (QC) Report.

l NO Method Blank value outliers occur.

l NO Duplicate outliers occur.

l NO Laboratory Control outliers occur.

l NO Matrix Spike outliers occur.

l For all regular sample matrices, NO surrogate recovery outliers occur.

Outliers : Analysis Holding Time Compliance

l NO Analysis Holding Time Outliers exist.

Outliers : Frequency of Quality Control Samples

l NO Quality Control Sample Frequency Outliers exist.

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

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Analysis Holding Time Compliance

Holding times for VOC in soils vary according to analytes of interest. Vinyl Chloride and Styrene holding time is 7 days; others 14 days. A recorded breach does not guarantee a breach for all VOC analytes and

should be verified in case the reported breach is a false positive or Vinyl Chloride and Styrene are not key analytes of interest/concern.

Holding time for leachate methods (e.g. TCLP) vary according to the analytes reported. Assessment compares the leach date with the shortest analyte holding time for the equivalent soil method. These are: organics

14 days, mercury 28 days & other metals 180 days. A recorded breach does not guarantee a breach for all non-volatile parameters.

If samples are identified below as having been analysed or extracted outside of recommended holding times, this should be taken into consideration when interpreting results.

This report summarizes extraction / preparation and analysis times and compares each with ALS recommended holding times (referencing USEPA SW 846, APHA, AS and NEPM) based on the sample container

provided. Dates reported represent first date of extraction or analysis and preclude subsequent dilutions and reruns. A listing of breaches (if any) is provided herein.

Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EA003 :pH (field/fox)

Snap Lock Bag - frozen (EA003)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

20-May-201904-Nov-2021 19-Feb-201919-Feb-201909-Feb-2019 ü ü

EA038: Acid Volatlile Sulfur

Snap Lock Bag - frozen (EA038)

ASS 2 1.0, ASS 3 1.0,

ASS 5 0.00-0.25, ASS 6 0.00-0.25

09-Feb-2020---- 18-Feb-2019----09-Feb-2019 ---- ü

EA055: Moisture Content (Dried @ 105-110°C)

Snap Lock Bag - frozen (EA055)

ASS 2 1.0, ASS 3 1.0,

ASS 5 0.00-0.25, ASS 6 0.00-0.25

23-Feb-2019---- 18-Feb-2019----09-Feb-2019 ---- ü

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Quality Control Parameter Frequency ComplianceThe following report summarises the frequency of laboratory QC samples analysed within the analytical lot(s) in which the submitted sample(s) was(were) processed. Actual rate should be greater than or equal to

the expected rate. A listing of breaches is provided in the Summary of Outliers.

Matrix: SOIL Evaluation: û = Quality Control frequency not within specification ; ü = Quality Control frequency within specification.

Quality Control SpecificationQuality Control Sample Type

ExpectedQC Regular Actual

Rate (%)Quality Control Sample Type CountEvaluationAnalytical Methods Method

Laboratory Duplicates (DUP)

NEPM 2013 B3 & ALS QC Standard 25.00 10.001 4 üAcid Volatile Sulfur EA038

NEPM 2013 B3 & ALS QC Standard 25.00 10.001 4 üMoisture Content EA055

NEPM 2013 B3 & ALS QC Standard 11.43 10.004 35 üpH field/fox EA003

Laboratory Control Samples (LCS)

NEPM 2013 B3 & ALS QC Standard 25.00 5.001 4 üAcid Volatile Sulfur EA038

Method Blanks (MB)

NEPM 2013 B3 & ALS QC Standard 25.00 5.001 4 üAcid Volatile Sulfur EA038

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Brief Method SummariesThe analytical procedures used by the Environmental Division have been developed from established internationally recognized procedures such as those published by the US EPA, APHA, AS and NEPM. In house

developed procedures are employed in the absence of documented standards or by client request. The following report provides brief descriptions of the analytical procedures employed for results reported in the

Certificate of Analysis. Sources from which ALS methods have been developed are provided within the Method Descriptions.

Analytical Methods Method DescriptionsMatrixMethod

In house: Referenced to Ahern et al 1998 - determined on a 1:5 soil/water extract designed to simulate field

measured pH and pH after the extract has been oxidised with peroxide.

pH field/fox EA003 SOIL

In house: Referenced to Sullivan et al (1998). The AVS method converts reduced inorganic Sulfur to H2S by way

of a cold 12MHCl acid digest; the evolved H2S is trapped in a Zinc Acetate solution as ZnS which is quantified by

iodometric titration.

Acid Volatile Sulfur EA038 SOIL

In house: A gravimetric procedure based on weight loss over a 12 hour drying period at 105-110 degrees C.

This method is compliant with NEPM (2013) Schedule B(3) Section 7.1 and Table 1 (14 day holding time).

Moisture Content EA055 SOIL

Preparation Methods Method DescriptionsMatrixMethod

In houseDrying only EN020D SOIL

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Form: VDC-DE-N-F-141.OP Revision 2Catalog: D000007848

Chain of Custody (CoC) DocumentationSampler:

Pendragon Environmental Solutions Mobile:Phone:

Project Manager (PM): e-mail analysis/report to:Job Number: Copy invoice to:Site: Results required by (date):

For Laboratory Use Only!

Cooler Seal Quote:Intact: Yes No N/A

Sample TemperatureChilled Yes No

Lab ID Sample ID Matrix Date Time Type / Code Total

ASS 1 0.00-0.25 S 9-Feb-19 1 x x x x

ASS 1 0.25-0.50 S 9-Feb-19 1 x

ASS 1 1.0 S 9-Feb-19 1 x

ASS 1 1.5 S 9-Feb-19 1 x x x x

ASS 2 0.00-0.25 S 9-Feb-19 1 x x x x

ASS 2 0.25-0.50 S 9-Feb-19 1 x

ASS 2 1.0 S 9-Feb-19 1 x x x x

ASS 2 1.5 S 9-Feb-19 1 x x x x x

ASS 3 0.00-0.25 S 9-Feb-19 1 x x x x x

ASS 3 0.25-0.50 S 9-Feb-19 1 x

ASS 3 1.0 S 9-Feb-19 1 x x x x

ASS 4 0.00-0.25 S 9-Feb-19 1 x x x x x

ASS 4 0.25-0.50 S 9-Feb-19 1 x

ASS 4 1.0 S 9-Feb-19 1 x x x

Name: Date: 20/02/2019 Name: :Date

Of: Time: Of: :Time

Name: Date: Name: :Date

Of: Time: Of: :TimeWater Container Codes: P = Unpreserved Plastic; N = Nitric Preserved Plastic; ORC = Nitric Preserved ORC; SH = Sodium Hydroxide/Cd Preserved; S = Sodium Hydroxide Preserveed Plastic; AG = Amber Glass Unpreserved; V = VOA Vial HCl Preserved; VS = VOA Vial Sulphuric Preserved; SG = Sulfuric Preserved Amber Glass; H = HCl preserved Plastic; HS = HCl preserved Speciation bottle; SP = Sulfuric Preserved Plastic; F = Formaldehyde Preserved Glass; Z = Zinc Acetate Preserved Bottle; E = EDTA Preserved Bottles; ST = Sterile Bottle; ASS = Plastic Bag for Acid Sulphate Soils; B = Unpreserved Bag. Page: OFNote: Job Number must be reflected on all invoices and statements. Attach copy of CoC to Invoice.

.

[email protected]

Ryan Lawrence 0430-310-0850430-310-085

Ryan Lawrence 0430-310-085Ryan Lawrence [email protected]

PES18020

Water and Environmental Scientists and Engineers

SLP ANALYSIS REQUIRED

SPO

CAS

AVS

CR

S

Relinguished By: Received By Method of Shipment

Notes: e.g. Highly contaminated samples,extra volume for QC or trace LORs

etc.

Courier:

Hand Delivery

1 1 1

Other:

Number of Eskys:

Tota

l Met

als

incl

udin

g TO

C

and

Org

anic

Con

tent

As, C

d, C

r, C

o, C

u, F

e, L

i, M

n, N

i, Pb

, Se,

Th,

U, V

, Zn

.

Leac

habl

e M

etal

s at

pH

4, 7

an

d 9

Pendragon Environmental Solutions

EP/014/16

Sample Information (S = Soil, Sed = Sediment, R = Rock, W=Water) Container Information

Comments/Special Handling/Storage or Disposal

Ryan Lawrence

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Form: VDC-DE-N-F-141.OP Revision 2Catalog: D000007848

Chain of Custody (CoC) DocumentationSampler:

Pendragon Environmental Solutions Mobile:Phone:

Project Manager (PM): e-mail analysis/report to:Job Number: Copy invoice to:Site: Results required by (date):

For Laboratory Use Only!

Cooler Seal Quote:Intact: Yes No N/A

Sample TemperatureChilled Yes No

Lab ID Sample ID Matrix Date Time Type / Code Total

ASS 5 0.00-0.25 S 9-Feb-19 1 x x x x

ASS 5 0.25-0.50 S 9-Feb-19 1 x

ASS 5 0.75 S 9-Feb-19 1 x x x x x

ASS 6 0.00-0.25 S 9-Feb-19 1 x x x x

ASS 6 0.25-0.50 S 9-Feb-19 1 x

ASS 6 0.75 S 9-Feb-19 1 x x x

ASS 7 0.00-0.25 S 9-Feb-19 1 x x x x x

ASS 7 0.25-0.50 S 9-Feb-19 1 x

ASS 7 1.0 S 9-Feb-19 1 x

ASS 7 1.5 S 9-Feb-19 1 x

ASS 7 2.0 S 9-Feb-19 1 x x x

Name: Date: 20/02/2019 Name: :Date

Of: Time: Of: :Time

Name: Date: Name: :Date

Of: Time: Of: :TimeWater Container Codes: P = Unpreserved Plastic; N = Nitric Preserved Plastic; ORC = Nitric Preserved ORC; SH = Sodium Hydroxide/Cd Preserved; S = Sodium Hydroxide Preserveed Plastic; AG = Amber Glass Unpreserved; V = VOA Vial HCl Preserved; VS = VOA Vial Sulphuric Preserved; SG = Sulfuric Preserved Amber Glass; H = HCl preserved Plastic; HS = HCl preserved Speciation bottle; SP = Sulfuric Preserved Plastic; F = Formaldehyde Preserved Glass; Z = Zinc Acetate Preserved Bottle; E = EDTA Preserved Bottles; ST = Sterile Bottle; ASS = Plastic Bag for Acid Sulphate Soils; B = Unpreserved Bag. Page: OFNote: Job Number must be reflected on all invoices and statements. Attach copy of CoC to Invoice.

Ryan Lawrence 0430-310-0850430-310-085

Water and Environmental Scientists and EngineersRyan Lawrence 0430-310-085Ryan Lawrence [email protected]

SLP ANALYSIS REQUIRED

Comments/Special Handling/Storage or Disposal

SPO

CAS

AVS

EA03

8

CR

S

Tota

l Met

als

incl

udin

g TO

C

and

Org

anic

Con

tent

As, C

d, C

r, C

o, C

u, F

e, L

i, M

n, N

i, Pb

, Se,

Th,

U, V

, Zn

.

PES18020 [email protected]

Notes: e.g. Highly contaminated samples,extra volume for QC or trace LORs

etc.

EP/014/16

.

Sample Information (S = Soil, Sed = Sediment, R = Rock, W=Water) Container Information

Leac

habl

e M

etal

s at

pH

4, 7

an

d 9

Relinguished By: Received By Method of Shipment

Ryan Lawrence Courier:

Pendragon Environmental Solutions

Other:

Hand Delivery

1 1 1Number of Eskys:

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0 0.00 True

Environmental

CERTIFICATE OF ANALYSISWork Order : Page : 1 of 38EB1904386

:Amendment 1:: LaboratoryClient PENDRAGON ENVIRONMENTAL SOLUTIONS Environmental Division Brisbane

: :ContactContact MR RYAN LAWRENCE Customer Services EB

:: AddressAddress 310 NEWCASTLE STREET

NORTHBRIDGE WESTERN AUSTRALIA 6003

2 Byth Street Stafford QLD Australia 4053

:Telephone +61 08 9382 8286 :Telephone +61-7-3243 7222

:Project PES18020 Date Samples Received : 20-Feb-2019 12:03

:Order number Date Analysis Commenced : 21-Feb-2019

:C-O-C number ---- Issue Date : 07-Mar-2019 13:54

Sampler : RYAN LAWRENCE

Site : SLP

Quote number : EN/222

70:No. of samples received

70:No. of samples analysed

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This document shall not be reproduced, except in full.

This Certificate of Analysis contains the following information:

l General Comments

l Analytical Results

Additional information pertinent to this report will be found in the following separate attachments: Quality Control Report, QA/QC Compliance Assessment to assist with

Quality Review and Sample Receipt Notification.

SignatoriesThis document has been electronically signed by the authorized signatories below. Electronic signing is carried out in compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Ben Felgendrejeris Senior Acid Sulfate Soil Chemist Brisbane Acid Sulphate Soils, Stafford, QLD

Kim McCabe Senior Inorganic Chemist Brisbane Inorganics, Stafford, QLD

Mark Hallas Senior Inorganic Chemist Brisbane Inorganics, Stafford, QLD

Tom Maloney Senior Inorganic Chemist Brisbane Inorganics, 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

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PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

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.

Where a result is required to meet compliance limits the associated uncertainty must be considered. Refer to the ALS Contact for details.

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.

~ = Indicates an estimated value.

Key :

EG005T (Total Metals): Samples EB1904386-001 (ASS 1 0.00-0.25) and EB1904386-017 (ASS 5 0.75) shows poor duplicate results due to sample heterogeneity. Confirmed by visual inspection.l

EG020-C (Leachable Metals by ICP-MS): The high failing laboratory control standard for Selenium is deemed acceptable as all results are less than the limit of reporting.l

EG020C (Leachable Metals by ICP-MS): Limit of reporting raised for some samples due to matrix interference.l

ASS: EA029 (SPOCAS): Retained Acidity not required because pH KCl greater than or equal to 4.5l

Amendment (04/03/2019): This report has been amended and re-released to allow the reporting of additional analytical data, specifically ICP-MS metals & additional leachates.l

EG005C (Leachable Metals by ICP-AES): Particular samples required dilution prior to analysis due to matrix interferences. Limit of reporting values have been adjusted accordingly.l

ASS: EA029 (SPOCAS): Liming rate is calculated and reported on a dry weight basis assuming use of fine agricultural lime (CaCO3) and using a safety factor of 1.5 to allow for non-homogeneous mixing and poor

reactivity of lime. For conversion of Liming Rate from kg/t dry weight to kg/m3 in-situ soil, multiply reported results x wet bulk density of soil in t/m3.

l

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Analytical Results

ASS 2 1.5ASS 2 1.0ASS 2 0.00-0.25ASS 1 1.5ASS 1 0.00-0.25Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-008EB1904386-007EB1904386-005EB1904386-004EB1904386-001UnitLORCAS NumberCompound

Result Result Result Result Result

EG005C: Leachable Metals by ICPAES

<0.1Arsenic <0.1 <0.1 <0.1 <0.1mg/L0.17440-38-2

<0.05Cadmium <0.05 <0.05 <0.05 <0.05mg/L0.057440-43-9

<0.1Chromium <0.1 <0.1 <0.1 <0.1mg/L0.17440-47-3

<0.1Cobalt <0.1 <0.1 <0.1 <0.1mg/L0.17440-48-4

<0.1Copper <0.1 <0.1 <0.1 <0.1mg/L0.17440-50-8

1.0Iron 3.8 0.7 1.9 1.1mg/L0.17439-89-6

<0.1Lead <0.1 <0.1 <0.1 <0.1mg/L0.17439-92-1

<0.1Manganese <0.1 0.2 0.2 <0.1mg/L0.17439-96-5

<0.1Nickel <0.1 <0.1 <0.1 <0.1mg/L0.17440-02-0

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.057782-49-2

<0.1Vanadium <0.1 <0.1 <0.1 <0.1mg/L0.17440-62-2

0.2Zinc 0.2 <0.1 <0.1 0.1mg/L0.17440-66-6

EG020C: Leachable Metals by ICPMS

0.006Lithium 0.004 0.006 0.005 0.006mg/L0.0017439-93-2

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

0.079Uranium 0.046 0.053 0.070 0.053mg/L0.0017440-61-1

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PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 5 0.00-0.25ASS 4 1.0ASS 4 0.00-0.25ASS 3 1.0ASS 3 0.00-0.25Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-015EB1904386-014EB1904386-012EB1904386-011EB1904386-009UnitLORCAS NumberCompound

Result Result Result Result Result

EG005C: Leachable Metals by ICPAES

<0.1Arsenic <0.1 <0.1 <0.1 <0.1mg/L0.17440-38-2

<0.05Cadmium <0.05 <0.05 <0.05 <0.05mg/L0.057440-43-9

<0.1Chromium <0.1 <0.1 <0.1 <0.1mg/L0.17440-47-3

<0.1Cobalt <0.1 0.2 <0.1 <0.1mg/L0.17440-48-4

<0.1Copper <0.1 0.1 <0.1 <0.1mg/L0.17440-50-8

0.7Iron 0.6 3.7 1.4 0.2mg/L0.17439-89-6

<0.1Lead <0.1 <0.1 <0.1 <0.1mg/L0.17439-92-1

0.2Manganese <0.1 7.4 0.6 2.8mg/L0.17439-96-5

<0.1Nickel <0.1 <0.1 <0.1 <0.1mg/L0.17440-02-0

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.057782-49-2

<0.1Vanadium <0.1 <0.1 <0.1 <0.1mg/L0.17440-62-2

<0.1Zinc <0.1 1.1 <0.1 <0.1mg/L0.17440-66-6

EG020C: Leachable Metals by ICPMS

0.005Lithium 0.007 0.007 0.005 0.005mg/L0.0017439-93-2

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

0.033Uranium 0.089 0.127 0.093 0.064mg/L0.0017440-61-1

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PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 7 2.0ASS 7 0.00-0.25ASS 6 0.75ASS 6 0.00-0.25ASS 5 0.75Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-025EB1904386-021EB1904386-020EB1904386-018EB1904386-017UnitLORCAS NumberCompound

Result Result Result Result Result

EG005C: Leachable Metals by ICPAES

<0.1Arsenic <0.1 <0.1 <0.1 <0.1mg/L0.17440-38-2

<0.05Cadmium <0.05 <0.05 <0.05 <0.05mg/L0.057440-43-9

<0.1Chromium <0.1 <0.1 <0.1 <0.1mg/L0.17440-47-3

<0.1Cobalt <0.1 <0.1 <0.1 <0.1mg/L0.17440-48-4

<0.1Copper <0.1 <0.1 0.1 <0.1mg/L0.17440-50-8

<0.1Iron 0.7 0.5 0.2 1.0mg/L0.17439-89-6

<0.1Lead <0.1 <0.1 <0.1 <0.1mg/L0.17439-92-1

0.2Manganese 0.3 0.1 0.3 <0.1mg/L0.17439-96-5

<0.1Nickel <0.1 <0.1 <0.1 <0.1mg/L0.17440-02-0

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.057782-49-2

<0.1Vanadium <0.1 <0.1 <0.1 <0.1mg/L0.17440-62-2

0.1Zinc <0.1 0.1 1.0 <0.1mg/L0.17440-66-6

EG020C: Leachable Metals by ICPMS

0.003Lithium 0.007 0.006 0.005 0.004mg/L0.0017439-93-2

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

0.055Uranium 0.086 0.091 0.104 0.042mg/L0.0017440-61-1

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Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 2 1.5

ASLP @ pH 9.0

ASS 2 1.0

ASLP @ pH 9.0

ASS 2 0.00-0.25

ASLP @ pH 9.0

ASS 1 1.5

ASLP @ pH 9.0

ASS 1 0.00-0.25

ASLP @ pH 9.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-030EB1904386-029EB1904386-028EB1904386-027EB1904386-026UnitLORCAS NumberCompound

Result Result Result Result Result

EG005C: Leachable Metals by ICPAES

<0.1Arsenic <0.1 <0.1 <0.1 <0.1mg/L0.17440-38-2

<0.05Cadmium <0.05 <0.05 <0.05 <0.05mg/L0.057440-43-9

<0.1Chromium <0.1 <0.1 <0.1 <0.1mg/L0.17440-47-3

<0.1Cobalt <0.1 <0.1 <0.1 <0.1mg/L0.17440-48-4

<0.1Copper <0.1 <0.1 <0.1 <0.1mg/L0.17440-50-8

<0.1Iron 5.9 <0.1 <0.1 <0.1mg/L0.17439-89-6

<0.1Lead <0.1 <0.1 <0.1 <0.1mg/L0.17439-92-1

<0.1Manganese <0.1 <0.1 <0.1 <0.1mg/L0.17439-96-5

<0.1Nickel <0.1 <0.1 <0.1 <0.1mg/L0.17440-02-0

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.057782-49-2

0.2Vanadium <0.1 <0.1 <0.1 <0.1mg/L0.17440-62-2

<0.5Zinc <0.5 <0.5 <0.5 <0.5mg/L0.17440-66-6

EG020C: Leachable Metals by ICPMS

<0.5Aluminium 3.3 <0.5 <0.5 <0.5mg/L0.17429-90-5

<0.026Arsenic <0.026 <0.026 <0.026 <0.026mg/L0.0057440-38-2

<0.005Cadmium <0.005 <0.005 <0.005 <0.005mg/L0.0017440-43-9

<0.05Cobalt <0.05 <0.05 <0.05 <0.05mg/L0.017440-48-4

<0.05Chromium <0.05 <0.05 <0.05 <0.05mg/L0.017440-47-3

<0.05Copper <0.05 <0.05 <0.05 <0.05mg/L0.017440-50-8

<0.005Lithium <0.005 <0.005 <0.005 <0.005mg/L0.0017439-93-2

<0.05Manganese <0.05 <0.05 <0.05 <0.05mg/L0.017439-96-5

<0.05Nickel <0.05 <0.05 <0.05 <0.05mg/L0.017440-02-0

<0.05Lead <0.05 <0.05 <0.05 <0.05mg/L0.017439-92-1

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.017782-49-2

0.13Vanadium 0.08 <0.05 <0.05 0.08mg/L0.017440-62-2

<0.5Zinc <0.5 <0.5 <0.5 <0.5mg/L0.17440-66-6

----Iron 4.38 <0.26 <0.26 <0.26mg/L0.057439-89-6

<0.005Thorium <0.005 <0.005 <0.005 <0.005mg/L0.0017440-29-1

0.007Uranium 0.006 <0.005 <0.005 0.006mg/L0.0017440-61-1

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Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 5 0.00-0.25

ASLP @ pH 9.0

ASS 4 1.0

ASLP @ pH 9.0

ASS 4 0.00-0.25

ASLP @ pH 9.0

ASS 3 1.0

ASLP @ pH 9.0

ASS 3 0.00-0.25

ASLP @ pH 9.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-035EB1904386-034EB1904386-033EB1904386-032EB1904386-031UnitLORCAS NumberCompound

Result Result Result Result Result

EG005C: Leachable Metals by ICPAES

<0.1Arsenic <0.1 <0.1 <0.1 <0.1mg/L0.17440-38-2

<0.05Cadmium <0.05 <0.05 <0.05 <0.05mg/L0.057440-43-9

<0.1Chromium <0.1 <0.1 <0.1 <0.1mg/L0.17440-47-3

<0.1Cobalt <0.1 <0.1 <0.1 <0.1mg/L0.17440-48-4

<0.1Copper <0.1 <0.1 <0.1 <0.1mg/L0.17440-50-8

<0.1Iron <0.1 <0.1 0.3 <0.1mg/L0.17439-89-6

<0.1Lead <0.1 <0.1 <0.1 <0.1mg/L0.17439-92-1

<0.1Manganese <0.1 <0.1 <0.1 <0.1mg/L0.17439-96-5

<0.1Nickel <0.1 <0.1 <0.1 <0.1mg/L0.17440-02-0

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.057782-49-2

<0.1Vanadium <0.1 <0.1 <0.1 <0.1mg/L0.17440-62-2

<0.5Zinc <0.5 <0.5 <0.5 <0.5mg/L0.17440-66-6

EG020C: Leachable Metals by ICPMS

<0.5Aluminium <0.5 <0.5 <0.5 <0.5mg/L0.17429-90-5

<0.026Arsenic <0.026 <0.026 <0.026 <0.026mg/L0.0057440-38-2

<0.005Cadmium <0.005 <0.005 <0.005 <0.005mg/L0.0017440-43-9

<0.05Cobalt <0.05 <0.05 <0.05 <0.05mg/L0.017440-48-4

<0.05Chromium <0.05 <0.05 <0.05 <0.05mg/L0.017440-47-3

<0.05Copper <0.05 <0.05 <0.05 <0.05mg/L0.017440-50-8

<0.005Lithium <0.005 <0.005 <0.005 <0.005mg/L0.0017439-93-2

<0.05Manganese <0.05 <0.05 <0.05 <0.05mg/L0.017439-96-5

<0.05Nickel <0.05 <0.05 <0.05 <0.05mg/L0.017440-02-0

<0.05Lead <0.05 <0.05 <0.05 <0.05mg/L0.017439-92-1

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.017782-49-2

<0.05Vanadium 0.08 0.09 0.07 <0.05mg/L0.017440-62-2

<0.5Zinc <0.5 <0.5 <0.5 <0.5mg/L0.17440-66-6

<0.26Iron <0.26 <0.26 0.29 <0.26mg/L0.057439-89-6

<0.005Thorium <0.005 <0.005 <0.005 <0.005mg/L0.0017440-29-1

<0.005Uranium 0.011 <0.005 0.012 0.009mg/L0.0017440-61-1

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Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 7 2.0

ASLP @ pH 9.0

ASS 7 0.00-0.25

ASLP @ pH 9.0

ASS 6 0.75

ASLP @ pH 9.0

ASS 6 0.00-0.25

ASLP @ pH 9.0

ASS 5 0.75

ASLP @ pH 9.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-040EB1904386-039EB1904386-038EB1904386-037EB1904386-036UnitLORCAS NumberCompound

Result Result Result Result Result

EG005C: Leachable Metals by ICPAES

<0.1Arsenic <0.1 <0.1 <0.1 <0.1mg/L0.17440-38-2

<0.05Cadmium <0.05 <0.05 <0.05 <0.05mg/L0.057440-43-9

<0.1Chromium <0.1 <0.1 <0.1 <0.1mg/L0.17440-47-3

<0.1Cobalt <0.1 <0.1 <0.1 <0.1mg/L0.17440-48-4

<0.1Copper <0.1 <0.1 <0.1 <0.1mg/L0.17440-50-8

<0.1Iron <0.1 <0.1 <0.1 <0.1mg/L0.17439-89-6

<0.1Lead <0.1 <0.1 <0.1 <0.1mg/L0.17439-92-1

<0.1Manganese <0.1 <0.1 <0.1 <0.1mg/L0.17439-96-5

<0.1Nickel <0.1 <0.1 <0.1 <0.1mg/L0.17440-02-0

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.057782-49-2

<0.1Vanadium <0.1 <0.1 <0.1 <0.1mg/L0.17440-62-2

<0.5Zinc <0.5 <0.5 <0.5 <0.5mg/L0.17440-66-6

EG020C: Leachable Metals by ICPMS

<0.5Aluminium <0.5 <0.5 <0.5 <0.5mg/L0.17429-90-5

<0.026Arsenic <0.026 0.035 <0.026 <0.026mg/L0.0057440-38-2

<0.005Cadmium <0.005 <0.005 <0.005 <0.005mg/L0.0017440-43-9

<0.05Cobalt <0.05 <0.05 <0.05 <0.05mg/L0.017440-48-4

<0.05Chromium <0.05 <0.05 <0.05 <0.05mg/L0.017440-47-3

<0.05Copper <0.05 <0.05 <0.05 <0.05mg/L0.017440-50-8

<0.005Lithium <0.005 <0.005 <0.005 <0.005mg/L0.0017439-93-2

<0.05Manganese <0.05 <0.05 <0.05 <0.05mg/L0.017439-96-5

<0.05Nickel <0.05 <0.05 <0.05 <0.05mg/L0.017440-02-0

<0.05Lead <0.05 <0.05 <0.05 <0.05mg/L0.017439-92-1

<0.05Selenium <0.05 <0.05 <0.05 <0.05mg/L0.017782-49-2

<0.05Vanadium <0.05 <0.05 0.08 0.06mg/L0.017440-62-2

<0.5Zinc <0.5 <0.5 <0.5 <0.5mg/L0.17440-66-6

<0.26Iron <0.26 <0.26 <0.26 <0.26mg/L0.057439-89-6

<0.005Thorium <0.005 <0.005 <0.005 <0.005mg/L0.0017440-29-1

0.010Uranium 0.010 0.013 <0.005 0.006mg/L0.0017440-61-1

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9 of 38:Page

Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 2 1.5

ASLP @ pH 4.0

ASS 2 1.0

ASLP @ pH 4.0

ASS 2 0.00-0.25

ASLP @ pH 4.0

ASS 1 1.5

ASLP @ pH 4.0

ASS 1 0.00-0.25

ASLP @ pH 4.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-045EB1904386-044EB1904386-043EB1904386-042EB1904386-041UnitLORCAS NumberCompound

Result Result Result Result Result

EG020C: Leachable Metals by ICPMS

3.9Aluminium 3.2 5.0 4.1 3.1mg/L0.17429-90-5

<0.005Arsenic <0.005 <0.005 <0.005 <0.005mg/L0.0057440-38-2

<0.001Cadmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-43-9

0.09Chromium 0.02 0.04 0.02 <0.01mg/L0.017440-47-3

<0.01Copper <0.01 <0.01 <0.01 <0.01mg/L0.017440-50-8

0.009Lithium 0.005 0.006 0.004 0.005mg/L0.0017439-93-2

0.46Manganese 0.16 0.43 0.59 0.12mg/L0.017439-96-5

0.03Nickel 0.05 0.03 0.02 0.03mg/L0.017440-02-0

<0.01Lead <0.01 <0.01 <0.01 <0.01mg/L0.017439-92-1

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

<0.1Zinc <0.1 0.2 <0.1 0.2mg/L0.17440-66-6

0.77Iron 0.40 1.08 0.53 1.23mg/L0.057439-89-6

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

0.202Uranium 0.093 0.105 0.111 0.112mg/L0.0017440-61-1

Page 69: Acid Sulfate Soil Investigation - EPA WA...Acid Sulfate Soil Investigation Lake Way Demonstration Plant Salt Lake Potash Leaders in ABN: 92 147 485 416 Environmental Practice Revision

10 of 38:Page

Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 5 0.00-0.25

ASLP @ pH 4.0

ASS 4 1.0

ASLP @ pH 4.0

ASS 4 0.00-0.25

ASLP @ pH 4.0

ASS 3 1.0

ASLP @ pH 4.0

ASS 3 0.00-0.25

ASLP @ pH 4.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-050EB1904386-049EB1904386-048EB1904386-047EB1904386-046UnitLORCAS NumberCompound

Result Result Result Result Result

EG020C: Leachable Metals by ICPMS

3.9Aluminium 3.4 5.1 4.2 4.4mg/L0.17429-90-5

<0.005Arsenic <0.005 0.026 <0.005 0.006mg/L0.0057440-38-2

<0.001Cadmium <0.001 0.001 <0.001 <0.001mg/L0.0017440-43-9

0.04Chromium 0.01 0.04 0.02 0.02mg/L0.017440-47-3

<0.01Copper <0.01 0.02 <0.01 <0.01mg/L0.017440-50-8

0.004Lithium 0.006 0.005 0.004 0.004mg/L0.0017439-93-2

0.54Manganese 0.13 9.76 1.12 4.83mg/L0.017439-96-5

0.02Nickel 0.05 0.08 0.02 0.05mg/L0.017440-02-0

<0.01Lead <0.01 0.01 <0.01 <0.01mg/L0.017439-92-1

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.01Vanadium <0.01 0.03 <0.01 <0.01mg/L0.017440-62-2

0.1Zinc 0.1 0.1 0.1 <0.1mg/L0.17440-66-6

1.30Iron 0.92 18.8 1.23 0.45mg/L0.057439-89-6

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

0.069Uranium 0.182 0.100 0.141 0.112mg/L0.0017440-61-1

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Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 7 2.0

ASLP @ pH 4.0

ASS 7 0.00-0.25

ASLP @ pH 4.0

ASS 6 0.75

ASLP @ pH 4.0

ASS 6 0.00-0.25

ASLP @ pH 4.0

ASS 5 0.75

ASLP @ pH 4.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-055EB1904386-054EB1904386-053EB1904386-052EB1904386-051UnitLORCAS NumberCompound

Result Result Result Result Result

EG020C: Leachable Metals by ICPMS

10.2Aluminium 5.8 3.9 5.8 3.7mg/L0.17429-90-5

<0.005Arsenic 0.006 0.018 <0.005 <0.005mg/L0.0057440-38-2

<0.001Cadmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-43-9

<0.01Chromium 0.05 0.02 0.07 0.02mg/L0.017440-47-3

<0.01Copper <0.01 <0.01 <0.01 <0.01mg/L0.017440-50-8

0.002Lithium 0.007 0.005 0.005 0.005mg/L0.0017439-93-2

0.54Manganese 0.77 0.36 0.76 0.12mg/L0.017439-96-5

0.04Nickel 0.04 0.03 0.03 0.11mg/L0.017440-02-0

<0.01Lead <0.01 <0.01 <0.01 <0.01mg/L0.017439-92-1

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

<0.1Zinc <0.1 <0.1 0.2 <0.1mg/L0.17440-66-6

0.05Iron 0.55 0.40 0.83 0.49mg/L0.057439-89-6

<0.001Thorium <0.001 <0.001 <0.001 0.001mg/L0.0017440-29-1

0.071Uranium 0.129 0.178 0.190 0.095mg/L0.0017440-61-1

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12 of 38:Page

Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 2 1.5

ASLP @ pH 7.0

ASS 2 1.0

ASLP @ pH 7.0

ASS 2 0.00-0.25

ASLP @ pH 7.0

ASS 1 1.5

ASLP @ pH 7.0

ASS 1 0.00-0.25

ASLP @ pH 7.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-060EB1904386-059EB1904386-058EB1904386-057EB1904386-056UnitLORCAS NumberCompound

Result Result Result Result Result

EG020C: Leachable Metals by ICPMS

1.8Aluminium 2.0 1.6 1.0 0.8mg/L0.17429-90-5

<0.005Arsenic <0.005 <0.005 <0.005 <0.005mg/L0.0057440-38-2

<0.001Cadmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-43-9

<0.01Chromium <0.01 <0.01 <0.01 <0.01mg/L0.017440-47-3

<0.01Copper <0.01 <0.01 <0.01 <0.01mg/L0.017440-50-8

0.002Lithium 0.002 0.003 0.002 0.002mg/L0.0017439-93-2

0.02Manganese <0.01 0.01 <0.01 <0.01mg/L0.017439-96-5

<0.01Nickel <0.01 <0.01 <0.01 <0.01mg/L0.017440-02-0

<0.01Lead <0.01 <0.01 <0.01 <0.01mg/L0.017439-92-1

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

<0.1Zinc <0.1 <0.1 <0.1 <0.1mg/L0.17440-66-6

2.38Iron 1.31 2.04 1.32 0.97mg/L0.057439-89-6

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

0.002Uranium <0.001 0.002 0.001 <0.001mg/L0.0017440-61-1

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13 of 38:Page

Work Order :

:Client

EB1904386 Amendment 1

PES18020:Project

PENDRAGON ENVIRONMENTAL SOLUTIONS

Analytical Results

ASS 5 0.00-0.25

ASLP @ pH 7.0

ASS 4 1.0

ASLP @ pH 7.0

ASS 4 0.00-0.25

ASLP @ pH 7.0

ASS 3 1.0

ASLP @ pH 7.0

ASS 3 0.00-0.25

ASLP @ pH 7.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-065EB1904386-064EB1904386-063EB1904386-062EB1904386-061UnitLORCAS NumberCompound

Result Result Result Result Result

EG020C: Leachable Metals by ICPMS

1.1Aluminium 1.2 0.9 <0.1 <0.1mg/L0.17429-90-5

<0.005Arsenic <0.005 <0.005 <0.005 <0.005mg/L0.0057440-38-2

<0.001Cadmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-43-9

<0.01Chromium <0.01 <0.01 <0.01 <0.01mg/L0.017440-47-3

<0.01Copper <0.01 <0.01 <0.01 <0.01mg/L0.017440-50-8

0.002Lithium 0.002 0.002 0.001 0.002mg/L0.0017439-93-2

<0.01Manganese 0.01 0.32 <0.01 0.14mg/L0.017439-96-5

<0.01Nickel <0.01 <0.01 <0.01 <0.01mg/L0.017440-02-0

<0.01Lead <0.01 <0.01 <0.01 <0.01mg/L0.017439-92-1

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

<0.1Zinc <0.1 <0.1 <0.1 <0.1mg/L0.17440-66-6

1.28Iron 1.37 0.48 0.06 0.06mg/L0.057439-89-6

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

<0.001Uranium 0.001 0.004 <0.001 <0.001mg/L0.0017440-61-1

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ASS 7 2.0

ASLP @ pH 7.0

ASS 7 0.00-0.25

ASLP @ pH 7.0

ASS 6 0.75

ASLP @ pH 7.0

ASS 6 0.00-0.25

ASLP @ pH 7.0

ASS 5 0.75

ASLP @ pH 7.0

Client sample IDSub-Matrix: ASLP LEACHATE

(Matrix: WATER)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-070EB1904386-069EB1904386-068EB1904386-067EB1904386-066UnitLORCAS NumberCompound

Result Result Result Result Result

EG020C: Leachable Metals by ICPMS

<0.1Aluminium 0.3 <0.1 <0.1 <0.1mg/L0.17429-90-5

<0.005Arsenic <0.005 <0.005 <0.005 <0.005mg/L0.0057440-38-2

<0.001Cadmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-43-9

<0.01Chromium <0.01 <0.01 <0.01 <0.01mg/L0.017440-47-3

<0.01Copper <0.01 <0.01 <0.01 <0.01mg/L0.017440-50-8

0.001Lithium 0.002 0.002 0.001 0.002mg/L0.0017439-93-2

<0.01Manganese <0.01 <0.01 <0.01 <0.01mg/L0.017439-96-5

<0.01Nickel <0.01 <0.01 <0.01 <0.01mg/L0.017440-02-0

<0.01Lead <0.01 <0.01 <0.01 <0.01mg/L0.017439-92-1

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

<0.1Zinc <0.1 <0.1 <0.1 <0.1mg/L0.17440-66-6

<0.05Iron 0.22 0.06 0.07 0.06mg/L0.057439-89-6

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

<0.001Uranium <0.001 0.001 0.014 <0.001mg/L0.0017440-61-1

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ASS 2 0.00-0.25ASS 1 1.5ASS 1 1.0ASS 1 0.25-0.50ASS 1 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-005EB1904386-004EB1904386-003EB1904386-002EB1904386-001UnitLORCAS NumberCompound

Result Result Result Result Result

EA026 : Chromium Reducible Sulfur

<0.005 ---- ---- <0.005 0.017%0.005----Chromium Reducible Sulphur

EA029-A: pH Measurements

8.3 8.2 8.0 8.1 8.3pH Unit0.1----pH KCl (23A)

7.7 7.9 7.6 7.4 7.4pH Unit0.1----pH OX (23B)

EA029-B: Acidity Trail

<2 <2 <2 <2 <2mole H+ / t2----Titratable Actual Acidity (23F)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Peroxide Acidity (23G)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Sulfidic Acidity (23H)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Actual Acidity (s-23F)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Peroxide Acidity

(s-23G)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Sulfidic Acidity (s-23H)

EA029-C: Sulfur Trail

0.814 2.61 0.860 0.682 9.50% S0.020----KCl Extractable Sulfur (23Ce)

0.674 1.88 0.664 0.510 7.42% S0.020----Peroxide Sulfur (23De)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----Peroxide Oxidisable Sulfur (23E)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Peroxide Oxidisable Sulfur

(a-23E)

EA029-D: Calcium Values

0.621 2.25 0.156 0.176 9.72% Ca0.020----KCl Extractable Calcium (23Vh)

0.588 1.94 0.154 0.170 8.99% Ca0.020----Peroxide Calcium (23Wh)

<0.020 <0.020 <0.020 <0.020 <0.020% Ca0.020----Acid Reacted Calcium (23X)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Acid Reacted Calcium (a-23X)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----sulfidic - Acid Reacted Calcium (s-23X)

EA029-E: Magnesium Values

0.193 0.233 0.473 0.264 0.198% Mg0.020----KCl Extractable Magnesium (23Sm)

0.935 0.568 0.876 0.666 0.616% Mg0.020----Peroxide Magnesium (23Tm)

0.742 0.335 0.404 0.401 0.417% Mg0.020----Acid Reacted Magnesium (23U)

610 276 332 330 343mole H+ / t10----Acidity - Acid Reacted Magnesium (a-23U)

0.979 0.442 0.532 0.529 0.551% S0.020----sulfidic - Acid Reacted Magnesium

(s-23U)

EA029-F: Excess Acid Neutralising Capacity

3.06 1.64 1.90 1.88 1.83% CaCO30.020----Excess Acid Neutralising Capacity (23Q)

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ASS 2 0.00-0.25ASS 1 1.5ASS 1 1.0ASS 1 0.25-0.50ASS 1 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-005EB1904386-004EB1904386-003EB1904386-002EB1904386-001UnitLORCAS NumberCompound

Result Result Result Result Result

EA029-F: Excess Acid Neutralising Capacity - Continued

612 328 380 376 365mole H+ / t10----acidity - Excess Acid Neutralising

Capacity (a-23Q)

0.981 0.524 0.608 0.602 0.585% S0.020----sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

EA029-H: Acid Base Accounting

1.5 1.5 1.5 1.5 1.5-0.5----ANC Fineness Factor

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity excluding ANC (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity excluding ANC (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate excluding ANC

EA055: Moisture Content (Dried @ 105-110°C)

30.3 ---- ---- 18.6 17.8%0.1----Moisture Content

EG005T: Total Metals by ICP-AES

6Arsenic ---- ---- 5 9mg/kg57440-38-2

<1Cadmium ---- ---- <1 <1mg/kg17440-43-9

76Chromium ---- ---- 56 35mg/kg27440-47-3

5Cobalt ---- ---- 15 5mg/kg27440-48-4

26Copper ---- ---- 28 14mg/kg57440-50-8

33000Iron ---- ---- 34400 17300mg/kg507439-89-6

5Lead ---- ---- 9 <5mg/kg57439-92-1

134Manganese ---- ---- 271 142mg/kg57439-96-5

15Nickel ---- ---- 19 10mg/kg27440-02-0

<5Selenium ---- ---- <5 <5mg/kg57782-49-2

86Vanadium ---- ---- 74 43mg/kg57440-62-2

33Zinc ---- ---- 25 13mg/kg57440-66-6

EG020T: Total Metals by ICP-MS

5.2Thorium ---- ---- 4.8 2.2mg/kg0.17440-29-1

17.4Uranium ---- ---- 9.6 5.2mg/kg0.17440-61-1

5.6Lithium ---- ---- 2.7 2.4mg/kg0.17439-93-2

EN60: ASLP Leaching Procedure

4.7 ---- ---- 4.7 4.7pH Unit0.1----Extraction Fluid pH

4.8 ---- ---- 4.7 4.7pH Unit0.1----Final pH

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Analytical Results

ASS 2 0.00-0.25ASS 1 1.5ASS 1 1.0ASS 1 0.25-0.50ASS 1 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-005EB1904386-004EB1904386-003EB1904386-002EB1904386-001UnitLORCAS NumberCompound

Result Result Result Result Result

EP004: Organic Matter

0.9 ---- ---- 0.7 <0.5%0.5----Organic Matter

0.5 ---- ---- <0.5 <0.5%0.5----Total Organic Carbon

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ASS 3 0.25-0.50ASS 3 0.00-0.25ASS 2 1.5ASS 2 1.0ASS 2 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-010EB1904386-009EB1904386-008EB1904386-007EB1904386-006UnitLORCAS NumberCompound

Result Result Result Result Result

EA026 : Chromium Reducible Sulfur

---- 0.008 0.007 0.008 ----%0.005----Chromium Reducible Sulphur

EA029-A: pH Measurements

8.2 8.0 8.0 8.0 8.2pH Unit0.1----pH KCl (23A)

7.9 7.1 7.4 7.6 8.1pH Unit0.1----pH OX (23B)

EA029-B: Acidity Trail

<2 <2 <2 <2 <2mole H+ / t2----Titratable Actual Acidity (23F)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Peroxide Acidity (23G)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Sulfidic Acidity (23H)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Actual Acidity (s-23F)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Peroxide Acidity

(s-23G)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Sulfidic Acidity (s-23H)

EA029-C: Sulfur Trail

7.63 3.42 3.77 1.89 0.641% S0.020----KCl Extractable Sulfur (23Ce)

6.36 2.67 2.99 1.59 0.508% S0.020----Peroxide Sulfur (23De)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----Peroxide Oxidisable Sulfur (23E)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Peroxide Oxidisable Sulfur

(a-23E)

EA029-D: Calcium Values

7.40 3.12 3.60 1.33 0.084% Ca0.020----KCl Extractable Calcium (23Vh)

7.44 2.83 3.22 1.22 0.082% Ca0.020----Peroxide Calcium (23Wh)

0.034 <0.020 <0.020 <0.020 <0.020% Ca0.020----Acid Reacted Calcium (23X)

17 <10 <10 <10 <10mole H+ / t10----acidity - Acid Reacted Calcium (a-23X)

0.027 <0.020 <0.020 <0.020 <0.020% S0.020----sulfidic - Acid Reacted Calcium (s-23X)

EA029-E: Magnesium Values

0.238 0.296 0.311 0.442 0.332% Mg0.020----KCl Extractable Magnesium (23Sm)

0.607 0.662 0.635 0.854 0.608% Mg0.020----Peroxide Magnesium (23Tm)

0.369 0.367 0.324 0.412 0.276% Mg0.020----Acid Reacted Magnesium (23U)

303 302 267 339 227mole H+ / t10----Acidity - Acid Reacted Magnesium (a-23U)

0.486 0.484 0.428 0.544 0.364% S0.020----sulfidic - Acid Reacted Magnesium

(s-23U)

EA029-F: Excess Acid Neutralising Capacity

1.75 1.62 1.44 1.84 1.44% CaCO30.020----Excess Acid Neutralising Capacity (23Q)

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Analytical Results

ASS 3 0.25-0.50ASS 3 0.00-0.25ASS 2 1.5ASS 2 1.0ASS 2 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-010EB1904386-009EB1904386-008EB1904386-007EB1904386-006UnitLORCAS NumberCompound

Result Result Result Result Result

EA029-F: Excess Acid Neutralising Capacity - Continued

350 324 289 367 288mole H+ / t10----acidity - Excess Acid Neutralising

Capacity (a-23Q)

0.561 0.520 0.462 0.587 0.461% S0.020----sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

EA029-H: Acid Base Accounting

1.5 1.5 1.5 1.5 1.5-0.5----ANC Fineness Factor

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity excluding ANC (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity excluding ANC (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate excluding ANC

EA055: Moisture Content (Dried @ 105-110°C)

---- 29.0 24.2 21.2 ----%0.1----Moisture Content

EG005T: Total Metals by ICP-AES

----Arsenic 6 6 8 ----mg/kg57440-38-2

----Cadmium <1 <1 <1 ----mg/kg17440-43-9

----Chromium 42 49 60 ----mg/kg27440-47-3

----Cobalt 12 11 7 ----mg/kg27440-48-4

----Copper 22 37 26 ----mg/kg57440-50-8

----Iron 25300 44200 29900 ----mg/kg507439-89-6

----Lead 8 11 8 ----mg/kg57439-92-1

----Manganese 526 212 400 ----mg/kg57439-96-5

----Nickel 12 19 14 ----mg/kg27440-02-0

----Selenium <5 <5 <5 ----mg/kg57782-49-2

----Vanadium 56 93 68 ----mg/kg57440-62-2

----Zinc 20 32 24 ----mg/kg57440-66-6

EG020T: Total Metals by ICP-MS

----Thorium 3.7 5.9 3.3 ----mg/kg0.17440-29-1

----Uranium 9.4 11.6 6.7 ----mg/kg0.17440-61-1

----Lithium 2.5 2.7 2.6 ----mg/kg0.17439-93-2

EN60: ASLP Leaching Procedure

---- 4.7 4.7 4.7 ----pH Unit0.1----Extraction Fluid pH

---- 4.6 4.7 4.7 ----pH Unit0.1----Final pH

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ASS 3 0.25-0.50ASS 3 0.00-0.25ASS 2 1.5ASS 2 1.0ASS 2 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-010EB1904386-009EB1904386-008EB1904386-007EB1904386-006UnitLORCAS NumberCompound

Result Result Result Result Result

EP004: Organic Matter

---- 0.5 <0.5 1.0 ----%0.5----Organic Matter

---- <0.5 <0.5 0.6 ----%0.5----Total Organic Carbon

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ASS 5 0.00-0.25ASS 4 1.0ASS 4 0.25-0.50ASS 4 0.00-0.25ASS 3 1.0Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-015EB1904386-014EB1904386-013EB1904386-012EB1904386-011UnitLORCAS NumberCompound

Result Result Result Result Result

EA026 : Chromium Reducible Sulfur

<0.005 0.057 ---- ---- 0.012%0.005----Chromium Reducible Sulphur

EA029-A: pH Measurements

7.5 8.0 8.1 8.0 8.1pH Unit0.1----pH KCl (23A)

7.7 8.0 8.1 8.1 7.9pH Unit0.1----pH OX (23B)

EA029-B: Acidity Trail

<2 <2 <2 <2 <2mole H+ / t2----Titratable Actual Acidity (23F)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Peroxide Acidity (23G)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Sulfidic Acidity (23H)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Actual Acidity (s-23F)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Peroxide Acidity

(s-23G)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Sulfidic Acidity (s-23H)

EA029-C: Sulfur Trail

0.939 1.75 0.808 0.838 2.20% S0.020----KCl Extractable Sulfur (23Ce)

0.642 0.145 0.598 0.589 1.82% S0.020----Peroxide Sulfur (23De)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----Peroxide Oxidisable Sulfur (23E)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Peroxide Oxidisable Sulfur

(a-23E)

EA029-D: Calcium Values

0.048 1.03 0.201 0.098 1.53% Ca0.020----KCl Extractable Calcium (23Vh)

0.054 0.084 0.191 0.092 1.43% Ca0.020----Peroxide Calcium (23Wh)

<0.020 <0.020 <0.020 <0.020 <0.020% Ca0.020----Acid Reacted Calcium (23X)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Acid Reacted Calcium (a-23X)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----sulfidic - Acid Reacted Calcium (s-23X)

EA029-E: Magnesium Values

0.587 0.472 0.273 0.392 0.454% Mg0.020----KCl Extractable Magnesium (23Sm)

0.886 0.199 0.577 0.635 0.830% Mg0.020----Peroxide Magnesium (23Tm)

0.299 <0.020 0.304 0.243 0.376% Mg0.020----Acid Reacted Magnesium (23U)

246 <10 250 200 309mole H+ / t10----Acidity - Acid Reacted Magnesium (a-23U)

0.394 <0.020 0.401 0.320 0.496% S0.020----sulfidic - Acid Reacted Magnesium

(s-23U)

EA029-F: Excess Acid Neutralising Capacity

1.73 0.712 1.53 1.53 1.66% CaCO30.020----Excess Acid Neutralising Capacity (23Q)

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Analytical Results

ASS 5 0.00-0.25ASS 4 1.0ASS 4 0.25-0.50ASS 4 0.00-0.25ASS 3 1.0Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-015EB1904386-014EB1904386-013EB1904386-012EB1904386-011UnitLORCAS NumberCompound

Result Result Result Result Result

EA029-F: Excess Acid Neutralising Capacity - Continued

345 142 306 306 332mole H+ / t10----acidity - Excess Acid Neutralising

Capacity (a-23Q)

0.553 0.228 0.489 0.490 0.532% S0.020----sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

EA029-H: Acid Base Accounting

1.5 1.5 1.5 1.5 1.5-0.5----ANC Fineness Factor

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity excluding ANC (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity excluding ANC (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate excluding ANC

EA055: Moisture Content (Dried @ 105-110°C)

22.2 29.3 ---- 24.1 22.7%0.1----Moisture Content

EG005T: Total Metals by ICP-AES

8Arsenic 26 ---- 7 10mg/kg57440-38-2

<1Cadmium <1 ---- <1 <1mg/kg17440-43-9

56Chromium 59 ---- 66 68mg/kg27440-47-3

30Cobalt 16 ---- 9 7mg/kg27440-48-4

36Copper 28 ---- 32 29mg/kg57440-50-8

48700Iron 34500 ---- 40500 30700mg/kg507439-89-6

14Lead 8 ---- 15 7mg/kg57439-92-1

406Manganese 406 ---- 1320 540mg/kg57439-96-5

27Nickel 19 ---- 18 16mg/kg27440-02-0

<5Selenium <5 ---- <5 <5mg/kg57782-49-2

104Vanadium 84 ---- 87 72mg/kg57440-62-2

40Zinc 24 ---- 30 22mg/kg57440-66-6

EG020T: Total Metals by ICP-MS

7.0Thorium 3.8 ---- 5.1 3.4mg/kg0.17440-29-1

18.3Uranium 11.4 ---- 14.4 10.2mg/kg0.17440-61-1

3.6Lithium 3.6 ---- 2.6 2.4mg/kg0.17439-93-2

EN60: ASLP Leaching Procedure

4.7 4.7 ---- 4.7 4.7pH Unit0.1----Extraction Fluid pH

4.7 4.7 ---- 4.7 4.7pH Unit0.1----Final pH

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Analytical Results

ASS 5 0.00-0.25ASS 4 1.0ASS 4 0.25-0.50ASS 4 0.00-0.25ASS 3 1.0Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-015EB1904386-014EB1904386-013EB1904386-012EB1904386-011UnitLORCAS NumberCompound

Result Result Result Result Result

EP004: Organic Matter

0.9 1.4 ---- 0.6 0.6%0.5----Organic Matter

0.5 0.8 ---- <0.5 <0.5%0.5----Total Organic Carbon

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Analytical Results

ASS 6 0.75ASS 6 0.25-0.50ASS 6 0.00-0.25ASS 5 0.75ASS 5 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-020EB1904386-019EB1904386-018EB1904386-017EB1904386-016UnitLORCAS NumberCompound

Result Result Result Result Result

EA026 : Chromium Reducible Sulfur

---- <0.005 0.006 ---- ----%0.005----Chromium Reducible Sulphur

EA029-A: pH Measurements

8.3 8.1 8.1 8.1 8.0pH Unit0.1----pH KCl (23A)

8.2 8.0 8.0 7.9 7.8pH Unit0.1----pH OX (23B)

EA029-B: Acidity Trail

<2 <2 <2 <2 <2mole H+ / t2----Titratable Actual Acidity (23F)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Peroxide Acidity (23G)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Sulfidic Acidity (23H)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Actual Acidity (s-23F)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Peroxide Acidity

(s-23G)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Sulfidic Acidity (s-23H)

EA029-C: Sulfur Trail

0.827 0.885 1.45 1.12 2.09% S0.020----KCl Extractable Sulfur (23Ce)

0.611 0.610 1.17 0.811 1.59% S0.020----Peroxide Sulfur (23De)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----Peroxide Oxidisable Sulfur (23E)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Peroxide Oxidisable Sulfur

(a-23E)

EA029-D: Calcium Values

0.162 0.117 0.779 0.445 1.50% Ca0.020----KCl Extractable Calcium (23Vh)

0.148 0.099 0.743 0.404 1.42% Ca0.020----Peroxide Calcium (23Wh)

<0.020 <0.020 <0.020 <0.020 <0.020% Ca0.020----Acid Reacted Calcium (23X)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Acid Reacted Calcium (a-23X)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----sulfidic - Acid Reacted Calcium (s-23X)

EA029-E: Magnesium Values

0.360 0.412 0.370 0.328 0.305% Mg0.020----KCl Extractable Magnesium (23Sm)

0.758 0.568 0.850 0.714 0.643% Mg0.020----Peroxide Magnesium (23Tm)

0.399 0.156 0.479 0.386 0.338% Mg0.020----Acid Reacted Magnesium (23U)

328 128 394 317 278mole H+ / t10----Acidity - Acid Reacted Magnesium (a-23U)

0.526 0.205 0.632 0.508 0.446% S0.020----sulfidic - Acid Reacted Magnesium

(s-23U)

EA029-F: Excess Acid Neutralising Capacity

1.89 1.05 1.98 1.67 1.46% CaCO30.020----Excess Acid Neutralising Capacity (23Q)

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Analytical Results

ASS 6 0.75ASS 6 0.25-0.50ASS 6 0.00-0.25ASS 5 0.75ASS 5 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-020EB1904386-019EB1904386-018EB1904386-017EB1904386-016UnitLORCAS NumberCompound

Result Result Result Result Result

EA029-F: Excess Acid Neutralising Capacity - Continued

377 209 395 334 292mole H+ / t10----acidity - Excess Acid Neutralising

Capacity (a-23Q)

0.604 0.335 0.633 0.534 0.468% S0.020----sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

EA029-H: Acid Base Accounting

1.5 1.5 1.5 1.5 1.5-0.5----ANC Fineness Factor

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity excluding ANC (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity excluding ANC (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate excluding ANC

EA055: Moisture Content (Dried @ 105-110°C)

---- 23.3 21.9 ---- 20.8%0.1----Moisture Content

EG005T: Total Metals by ICP-AES

----Arsenic <5 12 ---- 32mg/kg57440-38-2

----Cadmium <1 <1 ---- <1mg/kg17440-43-9

----Chromium 10 66 ---- 79mg/kg27440-47-3

----Cobalt <2 5 ---- 7mg/kg27440-48-4

----Copper 50 23 ---- 26mg/kg57440-50-8

----Iron 18500 27700 ---- 35400mg/kg507439-89-6

----Lead <5 7 ---- 10mg/kg57439-92-1

----Manganese 962 523 ---- 296mg/kg57439-96-5

----Nickel 17 15 ---- 21mg/kg27440-02-0

----Selenium <5 <5 ---- <5mg/kg57782-49-2

----Vanadium 54 62 ---- 76mg/kg57440-62-2

----Zinc 6 22 ---- 27mg/kg57440-66-6

EG020T: Total Metals by ICP-MS

----Thorium 0.2 3.7 ---- 4.2mg/kg0.17440-29-1

----Uranium 3.0 11.0 ---- 14.2mg/kg0.17440-61-1

----Lithium 0.3 2.4 ---- 2.2mg/kg0.17439-93-2

EN60: ASLP Leaching Procedure

---- 4.7 4.7 ---- 4.7pH Unit0.1----Extraction Fluid pH

---- 4.7 4.7 ---- 4.7pH Unit0.1----Final pH

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Analytical Results

ASS 6 0.75ASS 6 0.25-0.50ASS 6 0.00-0.25ASS 5 0.75ASS 5 0.25-0.50Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-020EB1904386-019EB1904386-018EB1904386-017EB1904386-016UnitLORCAS NumberCompound

Result Result Result Result Result

EP004: Organic Matter

---- 3.7 1.5 ---- 1.3%0.5----Organic Matter

---- 2.2 0.8 ---- 0.7%0.5----Total Organic Carbon

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Analytical Results

ASS 7 2.0ASS 7 1.5ASS 7 1.0ASS 7 0.25-0.50ASS 7 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-025EB1904386-024EB1904386-023EB1904386-022EB1904386-021UnitLORCAS NumberCompound

Result Result Result Result Result

EA026 : Chromium Reducible Sulfur

0.018 ---- ---- ---- ----%0.005----Chromium Reducible Sulphur

EA029-A: pH Measurements

8.3 8.4 8.2 7.9 8.0pH Unit0.1----pH KCl (23A)

7.8 8.0 8.2 7.5 7.3pH Unit0.1----pH OX (23B)

EA029-B: Acidity Trail

<2 <2 <2 <2 <2mole H+ / t2----Titratable Actual Acidity (23F)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Peroxide Acidity (23G)

<2 <2 <2 <2 <2mole H+ / t2----Titratable Sulfidic Acidity (23H)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Actual Acidity (s-23F)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Peroxide Acidity

(s-23G)

<0.020 <0.020 <0.020 <0.020 <0.020% pyrite S0.020----sulfidic - Titratable Sulfidic Acidity (s-23H)

EA029-C: Sulfur Trail

11.0 1.08 1.13 1.47 0.859% S0.020----KCl Extractable Sulfur (23Ce)

10.0 0.998 0.978 1.49 0.760% S0.020----Peroxide Sulfur (23De)

<0.020 <0.020 <0.020 0.021 <0.020% S0.020----Peroxide Oxidisable Sulfur (23E)

<10 <10 <10 13 <10mole H+ / t10----acidity - Peroxide Oxidisable Sulfur

(a-23E)

EA029-D: Calcium Values

13.9 0.142 0.826 0.245 0.082% Ca0.020----KCl Extractable Calcium (23Vh)

11.7 0.149 0.751 0.251 0.081% Ca0.020----Peroxide Calcium (23Wh)

<0.020 <0.020 <0.020 <0.020 <0.020% Ca0.020----Acid Reacted Calcium (23X)

<10 <10 <10 <10 <10mole H+ / t10----acidity - Acid Reacted Calcium (a-23X)

<0.020 <0.020 <0.020 <0.020 <0.020% S0.020----sulfidic - Acid Reacted Calcium (s-23X)

EA029-E: Magnesium Values

0.085 0.475 0.215 0.868 0.616% Mg0.020----KCl Extractable Magnesium (23Sm)

0.379 0.777 0.580 1.32 0.997% Mg0.020----Peroxide Magnesium (23Tm)

0.294 0.302 0.365 0.457 0.382% Mg0.020----Acid Reacted Magnesium (23U)

242 248 300 376 314mole H+ / t10----Acidity - Acid Reacted Magnesium (a-23U)

0.388 0.398 0.481 0.602 0.503% S0.020----sulfidic - Acid Reacted Magnesium

(s-23U)

EA029-F: Excess Acid Neutralising Capacity

2.47 1.44 1.80 1.69 1.72% CaCO30.020----Excess Acid Neutralising Capacity (23Q)

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Analytical Results

ASS 7 2.0ASS 7 1.5ASS 7 1.0ASS 7 0.25-0.50ASS 7 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-025EB1904386-024EB1904386-023EB1904386-022EB1904386-021UnitLORCAS NumberCompound

Result Result Result Result Result

EA029-F: Excess Acid Neutralising Capacity - Continued

493 289 360 338 344mole H+ / t10----acidity - Excess Acid Neutralising

Capacity (a-23Q)

0.789 0.462 0.576 0.542 0.551% S0.020----sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

EA029-H: Acid Base Accounting

1.5 1.5 1.5 1.5 1.5-0.5----ANC Fineness Factor

<0.02 <0.02 <0.02 <0.02 <0.02% S0.02----Net Acidity (sulfur units)

<10 <10 <10 <10 <10mole H+ / t10----Net Acidity (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate

<0.02 <0.02 <0.02 0.02 <0.02% S0.02----Net Acidity excluding ANC (sulfur units)

<10 <10 <10 13 <10mole H+ / t10----Net Acidity excluding ANC (acidity units)

<1 <1 <1 <1 <1kg CaCO3/t1----Liming Rate excluding ANC

EA055: Moisture Content (Dried @ 105-110°C)

25.5 ---- ---- ---- 11.5%0.1----Moisture Content

EG005T: Total Metals by ICP-AES

<5Arsenic ---- ---- ---- 5mg/kg57440-38-2

<1Cadmium ---- ---- ---- <1mg/kg17440-43-9

41Chromium ---- ---- ---- 55mg/kg27440-47-3

4Cobalt ---- ---- ---- 14mg/kg27440-48-4

15Copper ---- ---- ---- 29mg/kg57440-50-8

20000Iron ---- ---- ---- 30600mg/kg507439-89-6

<5Lead ---- ---- ---- 7mg/kg57439-92-1

136Manganese ---- ---- ---- 224mg/kg57439-96-5

11Nickel ---- ---- ---- 21mg/kg27440-02-0

<5Selenium ---- ---- ---- <5mg/kg57782-49-2

53Vanadium ---- ---- ---- 66mg/kg57440-62-2

18Zinc ---- ---- ---- 22mg/kg57440-66-6

EG020T: Total Metals by ICP-MS

3.1Thorium ---- ---- ---- 3.8mg/kg0.17440-29-1

10.6Uranium ---- ---- ---- 7.3mg/kg0.17440-61-1

3.5Lithium ---- ---- ---- 2.2mg/kg0.17439-93-2

EN60: ASLP Leaching Procedure

4.7 ---- ---- ---- 4.7pH Unit0.1----Extraction Fluid pH

4.8 ---- ---- ---- 4.7pH Unit0.1----Final pH

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Analytical Results

ASS 7 2.0ASS 7 1.5ASS 7 1.0ASS 7 0.25-0.50ASS 7 0.00-0.25Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-025EB1904386-024EB1904386-023EB1904386-022EB1904386-021UnitLORCAS NumberCompound

Result Result Result Result Result

EP004: Organic Matter

0.8 ---- ---- ---- 1.9%0.5----Organic Matter

<0.5 ---- ---- ---- 1.1%0.5----Total Organic Carbon

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ASS 2 1.5

ASLP @ pH 9.0

ASS 2 1.0

ASLP @ pH 9.0

ASS 2 0.00-0.25

ASLP @ pH 9.0

ASS 1 1.5

ASLP @ pH 9.0

ASS 1 0.00-0.25

ASLP @ pH 9.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-030EB1904386-029EB1904386-028EB1904386-027EB1904386-026UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

9.2 9.3 9.0 9.1 9.2pH Unit0.1----Final pH

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ASS 5 0.00-0.25

ASLP @ pH 9.0

ASS 4 1.0

ASLP @ pH 9.0

ASS 4 0.00-0.25

ASLP @ pH 9.0

ASS 3 1.0

ASLP @ pH 9.0

ASS 3 0.00-0.25

ASLP @ pH 9.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-035EB1904386-034EB1904386-033EB1904386-032EB1904386-031UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

9.2 9.2 9.1 9.3 9.3pH Unit0.1----Final pH

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ASS 7 2.0

ASLP @ pH 9.0

ASS 7 0.00-0.25

ASLP @ pH 9.0

ASS 6 0.75

ASLP @ pH 9.0

ASS 6 0.00-0.25

ASLP @ pH 9.0

ASS 5 0.75

ASLP @ pH 9.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-040EB1904386-039EB1904386-038EB1904386-037EB1904386-036UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

9.3 9.2 9.2 9.2 9.2pH Unit0.1----Final pH

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ASS 2 1.5

ASLP @ pH 4.0

ASS 2 1.0

ASLP @ pH 4.0

ASS 2 0.00-0.25

ASLP @ pH 4.0

ASS 1 1.5

ASLP @ pH 4.0

ASS 1 0.00-0.25

ASLP @ pH 4.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-045EB1904386-044EB1904386-043EB1904386-042EB1904386-041UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

4.2 4.1 4.1 4.1 4.1pH Unit0.1----Final pH

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ASS 5 0.00-0.25

ASLP @ pH 4.0

ASS 4 1.0

ASLP @ pH 4.0

ASS 4 0.00-0.25

ASLP @ pH 4.0

ASS 3 1.0

ASLP @ pH 4.0

ASS 3 0.00-0.25

ASLP @ pH 4.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-050EB1904386-049EB1904386-048EB1904386-047EB1904386-046UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

4.1 4.1 4.1 4.1 4.1pH Unit0.1----Final pH

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Analytical Results

ASS 7 2.0

ASLP @ pH 4.0

ASS 7 0.00-0.25

ASLP @ pH 4.0

ASS 6 0.75

ASLP @ pH 4.0

ASS 6 0.00-0.25

ASLP @ pH 4.0

ASS 5 0.75

ASLP @ pH 4.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-055EB1904386-054EB1904386-053EB1904386-052EB1904386-051UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

4.1 4.1 4.1 4.2 4.1pH Unit0.1----Final pH

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ASS 2 1.5

ASLP @ pH 7.0

ASS 2 1.0

ASLP @ pH 7.0

ASS 2 0.00-0.25

ASLP @ pH 7.0

ASS 1 1.5

ASLP @ pH 7.0

ASS 1 0.00-0.25

ASLP @ pH 7.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-060EB1904386-059EB1904386-058EB1904386-057EB1904386-056UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

7.7 7.4 7.6 7.3 7.3pH Unit0.1----Final pH

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Analytical Results

ASS 5 0.00-0.25

ASLP @ pH 7.0

ASS 4 1.0

ASLP @ pH 7.0

ASS 4 0.00-0.25

ASLP @ pH 7.0

ASS 3 1.0

ASLP @ pH 7.0

ASS 3 0.00-0.25

ASLP @ pH 7.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-065EB1904386-064EB1904386-063EB1904386-062EB1904386-061UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

7.3 7.4 7.3 7.3 7.2pH Unit0.1----Final pH

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Analytical Results

ASS 7 2.0

ASLP @ pH 7.0

ASS 7 0.00-0.25

ASLP @ pH 7.0

ASS 6 0.75

ASLP @ pH 7.0

ASS 6 0.00-0.25

ASLP @ pH 7.0

ASS 5 0.75

ASLP @ pH 7.0

Client sample IDSub-Matrix: SOIL

(Matrix: SOIL)

09-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:0009-Feb-2019 00:00Client sampling date / time

EB1904386-070EB1904386-069EB1904386-068EB1904386-067EB1904386-066UnitLORCAS NumberCompound

Result Result Result Result Result

EN60: ASLP Leaching Procedure

7.4 7.3 7.2 7.3 7.3pH Unit0.1----Final pH

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True

Environmental

QA/QC Compliance Assessment to assist with Quality ReviewWork Order : EB1904386 Page : 1 of 16

:Amendment 1

:: LaboratoryClient Environmental Division BrisbanePENDRAGON ENVIRONMENTAL SOLUTIONS

:Contact MR RYAN LAWRENCE Telephone : +61-7-3243 7222

:Project PES18020 Date Samples Received : 20-Feb-2019

Site : SLP Issue Date : 07-Mar-2019

RYAN LAWRENCE:Sampler No. of samples received : 70

:Order number No. of samples analysed : 70

This report is automatically generated by the ALS LIMS through interpretation of the ALS Quality Control Report and several Quality Assurance parameters measured by ALS. This automated

reporting highlights any non-conformances, facilitates faster and more accurate data validation and is designed to assist internal expert and external Auditor review. Many components of this

report contribute to the overall DQO assessment and reporting for guideline compliance.

Brief method summaries and references are also provided to assist in traceability.

Summary of Outliers

Outliers : Quality Control Samples

This report highlights outliers flagged in the Quality Control (QC) Report.

l Method Blank value outliers exist - please see following pages for full details.

l Duplicate outliers exist - please see following pages for full details.

l Laboratory Control outliers exist - please see following pages for full details.

l Matrix Spike outliers exist - please see following pages for full details.

l For all regular sample matrices, NO surrogate recovery outliers occur.

Outliers : Analysis Holding Time Compliance

l Analysis Holding Time Outliers exist - please see following pages for full details.

Outliers : Frequency of Quality Control Samples

l Quality Control Sample Frequency Outliers exist - please see following pages for full details.

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

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Outliers : Quality Control Samples

Duplicates, Method Blanks, Laboratory Control Samples and Matrix Spikes

Matrix: SOIL

Compound Group Name CommentLimitsDataAnalyteClient Sample IDLaboratory Sample ID CAS Number

Duplicate (DUP) RPDs

EB1904386--017 7439-89-6IronASS 5 0.75 RPD exceeds LOR based limits0% - 20%38.9 %EG005T: Total Metals by ICP-AES

EB1904386--001 7439-96-5ManganeseASS 1 0.00-0.25 RPD exceeds LOR based limits0% - 20%65.3 %EG005T: Total Metals by ICP-AES

EB1904386--017 7439-96-5ManganeseASS 5 0.75 RPD exceeds LOR based limits0% - 20%68.2 %EG005T: Total Metals by ICP-AES

EB1904386--017 7440-62-2VanadiumASS 5 0.75 RPD exceeds LOR based limits0% - 20%62.5 %EG005T: Total Metals by ICP-AES

Matrix Spike (MS) Recoveries

EB1904386--004 7439-96-5ManganeseASS 1 1.5 MS recovery not determined,

background level greater than or

equal to 4x spike level.

----Not

Determined

EG005T: Total Metals by ICP-AES

Matrix: WATER

Compound Group Name CommentLimitsDataAnalyteClient Sample IDLaboratory Sample ID CAS Number

Method Blank (MB) Values

QC-MRG3-2206681001 7440-50-8Copper---- Blank result exceeds permitted value0.01 mg/L0.37 mg/LEG020C: Leachable Metals by ICPMS

QC-MRG3-2206681001 7439-92-1Lead---- Blank result exceeds permitted value0.01 mg/L0.02 mg/LEG020C: Leachable Metals by ICPMS

QC-MRG3-2206681001 7440-66-6Zinc---- Blank result exceeds permitted value0.1 mg/L0.2 mg/LEG020C: Leachable Metals by ICPMS

Laboratory Control Spike (LCS) Recoveries

QC-MRG2-2206681002 7429-90-5Aluminium---- Recovery less than lower control limit83-117%1.34 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7429-90-5Aluminium---- Recovery greater than upper control

limit

83-117%446 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-38-2Arsenic---- Recovery less than lower control limit87-113%1.16 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-38-2Arsenic---- Recovery greater than upper control

limit

87-113%510 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-43-9Cadmium---- Recovery less than lower control limit87-109%1.08 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-43-9Cadmium---- Recovery greater than upper control

limit

87-109%489 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-48-4Cobalt---- Recovery less than lower control limit89-119%0.895 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-48-4Cobalt---- Recovery greater than upper control

limit

89-119%452 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-47-3Chromium---- Recovery less than lower control limit86-116%1.90 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-47-3Chromium---- Recovery greater than upper control

limit

86-116%485 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-50-8Copper---- Recovery less than lower control limit83-119%0.852 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-50-8Copper---- Recovery greater than upper control

limit

83-119%464 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7439-96-5Manganese---- Recovery less than lower control limit87-113%0.268 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7439-96-5Manganese---- Recovery greater than upper control

limit

87-113%466 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-02-0Nickel---- Recovery less than lower control limit85-112%3.04 %EG020C: Leachable Metals by ICPMS

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Matrix: WATER

Compound Group Name CommentLimitsDataAnalyteClient Sample IDLaboratory Sample ID CAS Number

Laboratory Control Spike (LCS) Recoveries - Continued

QC-MRG2-2209661002 7440-02-0Nickel---- Recovery greater than upper control

limit

85-112%482 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7439-92-1Lead---- Recovery less than lower control limit88-110%0.504 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7439-92-1Lead---- Recovery greater than upper control

limit

88-110%470 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7782-49-2Selenium---- Recovery less than lower control limit79-110%0.983 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7782-49-2Selenium---- Recovery greater than upper control

limit

79-110%470 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2219445002 7782-49-2Selenium---- Recovery greater than upper control

limit

79-110%127 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-62-2Vanadium---- Recovery less than lower control limit80-115%1.23 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-62-2Vanadium---- Recovery greater than upper control

limit

80-115%497 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7440-66-6Zinc---- Recovery less than lower control limit89-114%2.18 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7440-66-6Zinc---- Recovery greater than upper control

limit

89-114%433 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2206681002 7439-89-6Iron---- Recovery less than lower control limit95-119%2.56 %EG020C: Leachable Metals by ICPMS

QC-MRG2-2209661002 7439-89-6Iron---- Recovery greater than upper control

limit

95-119%495 %EG020C: Leachable Metals by ICPMS

Matrix Spike (MS) Recoveries

EB1904386--029 7440-38-2ArsenicASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%511 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-43-9CadmiumASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%483 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-48-4CobaltASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%476 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-47-3ChromiumASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%516 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-50-8CopperASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%491 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7439-96-5ManganeseASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%481 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-02-0NickelASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%477 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7439-92-1LeadASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%518 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-62-2VanadiumASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%525 %EG020C: Leachable Metals by ICPMS

EB1904386--029 7440-66-6ZincASS 2 1.0 ASLP @ pH 9.0 Recovery greater than upper data

quality objective

70-130%413 %EG020C: Leachable Metals by ICPMS

Outliers : Analysis Holding Time Compliance

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Matrix: SOIL

AnalysisExtraction / Preparation

Date analysedDate extractedContainer / Client Sample ID(s) Days

overdue

Days

overdue

Due for extraction Due for analysis

Method

EP004: Organic Matter

Snap Lock Bag

----16-Feb-2019ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

----28-Feb-2019 12 ----

Outliers : Frequency of Quality Control Samples

Matrix: SOIL

Quality Control SpecificationQuality Control Sample Type

Method ExpectedQC Regular Actual

Rate (%)Quality Control Sample Type Count

Laboratory Control Samples (LCS)

NEPM 2013 B3 & ALS QC StandardTotal Metals by ICP-MS - Suite X 0.00 5.000 15

Matrix Spikes (MS)

NEPM 2013 B3 & ALS QC StandardTotal Metals by ICP-MS - Suite X 0.00 5.000 15

NEPM 2013 B3 & ALS QC StandardTotal Metals by ICP-MS - Suite Y 0.00 5.000 15

Matrix: WATER

Quality Control SpecificationQuality Control Sample Type

Method ExpectedQC Regular Actual

Rate (%)Quality Control Sample Type Count

Laboratory Control Samples (LCS)

NEPM 2013 B3 & ALS QC StandardLeachable Metals by ICPMS - Suite B 0.00 5.000 60

Analysis Holding Time Compliance

Holding times for VOC in soils vary according to analytes of interest. Vinyl Chloride and Styrene holding time is 7 days; others 14 days. A recorded breach does not guarantee a breach for all VOC analytes and

should be verified in case the reported breach is a false positive or Vinyl Chloride and Styrene are not key analytes of interest/concern.

Holding time for leachate methods (e.g. TCLP) vary according to the analytes reported. Assessment compares the leach date with the shortest analyte holding time for the equivalent soil method. These are: organics

14 days, mercury 28 days & other metals 180 days. A recorded breach does not guarantee a breach for all non-volatile parameters.

If samples are identified below as having been analysed or extracted outside of recommended holding times, this should be taken into consideration when interpreting results.

This report summarizes extraction / preparation and analysis times and compares each with ALS recommended holding times (referencing USEPA SW 846, APHA, AS and NEPM) based on the sample container

provided. Dates reported represent first date of extraction or analysis and preclude subsequent dilutions and reruns. A listing of breaches (if any) is provided herein.

Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

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Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EA026 : Chromium Reducible Sulfur

80* dried soil (EA026)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 5 0.00-0.25, ASS 5 0.75,

ASS 6 0.00-0.25, ASS 7 0.00-0.25

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

EA029-A: pH Measurements

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

EA029-B: Acidity Trail

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

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Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EA029-C: Sulfur Trail

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

EA029-D: Calcium Values

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

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Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EA029-E: Magnesium Values

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

EA029-F: Excess Acid Neutralising Capacity

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

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Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EA029-G: Retained Acidity

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

EA029-H: Acid Base Accounting

80* dried soil (EA029)

ASS 1 0.00-0.25, ASS 1 0.25-0.50,

ASS 1 1.0, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 0.25-0.50,

ASS 2 1.0, ASS 2 1.5,

ASS 3 0.00-0.25, ASS 3 0.25-0.50,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 0.25-0.50, ASS 4 1.0,

ASS 5 0.00-0.25, ASS 5 0.25-0.50,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.25-0.50, ASS 6 0.75,

ASS 7 0.00-0.25, ASS 7 0.25-0.50,

ASS 7 1.0, ASS 7 1.5,

ASS 7 2.0

29-May-201904-Nov-2021 28-Feb-201928-Feb-201909-Feb-2019 ü ü

EA055: Moisture Content (Dried @ 105-110°C)

Snap Lock Bag (EA055)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

23-Feb-2019---- 21-Feb-2019----09-Feb-2019 ---- ü

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Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EG005T: Total Metals by ICP-AES

80* dried soil (EG005T)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

08-Aug-201908-Aug-2019 22-Feb-201921-Feb-201909-Feb-2019 ü ü

EG020T: Total Metals by ICP-MS

80* dried soil (EG020Y-T)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

08-Aug-201908-Aug-2019 22-Feb-201921-Feb-201909-Feb-2019 ü ü

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Matrix: SOIL Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EN60: ASLP Leaching Procedure

Non-Volatile Leach: 180 day HT (e.g. PFAS, metals ex.Hg) (EN60a)

ASS 1 0.00-0.25 - ASLP @ pH 4.0, ASS 1 1.5 - ASLP @ pH 4.0,

ASS 2 0.00-0.25 - ASLP @ pH 4.0, ASS 2 1.0 - ASLP @ pH 4.0,

ASS 2 1.5 - ASLP @ pH 4.0, ASS 3 0.00-0.25 - ASLP @ pH 4.0,

ASS 3 1.0 - ASLP @ pH 4.0, ASS 4 0.00-0.25 - ASLP @ pH 4.0,

ASS 4 1.0 - ASLP @ pH 4.0, ASS 5 0.00-0.25 - ASLP @ pH 4.0,

ASS 5 0.75 - ASLP @ pH 4.0, ASS 6 0.00-0.25 - ASLP @ pH 4.0,

ASS 6 0.75 - ASLP @ pH 4.0, ASS 7 0.00-0.25 - ASLP @ pH 4.0,

ASS 7 2.0 - ASLP @ pH 4.0, ASS 1 0.00-0.25 - ASLP @ pH 7.0,

ASS 1 1.5 - ASLP @ pH 7.0, ASS 2 0.00-0.25 - ASLP @ pH 7.0,

ASS 2 1.0 - ASLP @ pH 7.0, ASS 2 1.5 - ASLP @ pH 7.0,

ASS 3 0.00-0.25 - ASLP @ pH 7.0, ASS 3 1.0 - ASLP @ pH 7.0,

ASS 4 0.00-0.25 - ASLP @ pH 7.0, ASS 4 1.0 - ASLP @ pH 7.0,

ASS 5 0.00-0.25 - ASLP @ pH 7.0, ASS 5 0.75 - ASLP @ pH 7.0,

ASS 6 0.00-0.25 - ASLP @ pH 7.0, ASS 6 0.75 - ASLP @ pH 7.0,

ASS 7 0.00-0.25 - ASLP @ pH 7.0, ASS 7 2.0 - ASLP @ pH 7.0

----08-Aug-2019 ----05-Mar-201909-Feb-2019 ü ----

Non-Volatile Leach: 180 day HT (e.g. PFAS, metals ex.Hg) (EN60a)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0, ASS 1 0.00-0.25 - ASLP @ pH 9.0,

ASS 1 1.5 - ASLP @ pH 9.0, ASS 2 0.00-0.25 - ASLP @ pH 9.0,

ASS 2 1.0 - ASLP @ pH 9.0, ASS 2 1.5 - ASLP @ pH 9.0,

ASS 3 0.00-0.25 - ASLP @ pH 9.0, ASS 3 1.0 - ASLP @ pH 9.0,

ASS 4 0.00-0.25 - ASLP @ pH 9.0, ASS 4 1.0 - ASLP @ pH 9.0,

ASS 5 0.00-0.25 - ASLP @ pH 9.0, ASS 5 0.75 - ASLP @ pH 9.0,

ASS 6 0.00-0.25 - ASLP @ pH 9.0, ASS 6 0.75 - ASLP @ pH 9.0,

ASS 7 0.00-0.25 - ASLP @ pH 9.0, ASS 7 2.0 - ASLP @ pH 9.0

----08-Aug-2019 ----22-Feb-201909-Feb-2019 ü ----

EP004: Organic Matter

Snap Lock Bag (EP004)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

28-Mar-201916-Feb-2019 28-Feb-201928-Feb-201909-Feb-2019 û ü

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Matrix: WATER Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EG005C: Leachable Metals by ICPAES

Clear Plastic Bottle - Nitric Acid; Unfiltered (EG005C)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

21-Aug-201921-Aug-2019 27-Feb-201927-Feb-201922-Feb-2019 ü ü

Clear Plastic Bottle - Nitric Acid; Unfiltered (EG005C)

ASS 1 0.00-0.25 - ASLP @ pH 9.0, ASS 1 1.5 - ASLP @ pH 9.0,

ASS 2 0.00-0.25 - ASLP @ pH 9.0, ASS 2 1.0 - ASLP @ pH 9.0,

ASS 2 1.5 - ASLP @ pH 9.0, ASS 3 0.00-0.25 - ASLP @ pH 9.0,

ASS 3 1.0 - ASLP @ pH 9.0, ASS 4 0.00-0.25 - ASLP @ pH 9.0,

ASS 4 1.0 - ASLP @ pH 9.0, ASS 5 0.00-0.25 - ASLP @ pH 9.0,

ASS 5 0.75 - ASLP @ pH 9.0, ASS 6 0.00-0.25 - ASLP @ pH 9.0,

ASS 6 0.75 - ASLP @ pH 9.0, ASS 7 0.00-0.25 - ASLP @ pH 9.0,

ASS 7 2.0 - ASLP @ pH 9.0

21-Aug-201921-Aug-2019 28-Feb-201928-Feb-201922-Feb-2019 ü ü

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Matrix: WATER Evaluation: û = Holding time breach ; ü = Within holding time.

AnalysisExtraction / PreparationSample DateMethod

EvaluationDue for analysisDate analysedEvaluationDue for extractionDate extractedContainer / Client Sample ID(s)

EG020C: Leachable Metals by ICPMS

Clear Plastic Bottle - Nitric Acid; Unfiltered (EG020B-C)

ASS 1 0.00-0.25 - ASLP @ pH 4.0, ASS 1 1.5 - ASLP @ pH 4.0,

ASS 2 0.00-0.25 - ASLP @ pH 4.0, ASS 2 1.0 - ASLP @ pH 4.0,

ASS 2 1.5 - ASLP @ pH 4.0, ASS 3 0.00-0.25 - ASLP @ pH 4.0,

ASS 3 1.0 - ASLP @ pH 4.0, ASS 4 0.00-0.25 - ASLP @ pH 4.0,

ASS 4 1.0 - ASLP @ pH 4.0, ASS 5 0.00-0.25 - ASLP @ pH 4.0,

ASS 5 0.75 - ASLP @ pH 4.0, ASS 6 0.00-0.25 - ASLP @ pH 4.0,

ASS 6 0.75 - ASLP @ pH 4.0, ASS 7 0.00-0.25 - ASLP @ pH 4.0,

ASS 7 2.0 - ASLP @ pH 4.0, ASS 1 0.00-0.25 - ASLP @ pH 7.0,

ASS 1 1.5 - ASLP @ pH 7.0, ASS 2 0.00-0.25 - ASLP @ pH 7.0,

ASS 2 1.0 - ASLP @ pH 7.0, ASS 2 1.5 - ASLP @ pH 7.0,

ASS 3 0.00-0.25 - ASLP @ pH 7.0, ASS 3 1.0 - ASLP @ pH 7.0,

ASS 4 0.00-0.25 - ASLP @ pH 7.0, ASS 4 1.0 - ASLP @ pH 7.0,

ASS 5 0.00-0.25 - ASLP @ pH 7.0, ASS 5 0.75 - ASLP @ pH 7.0,

ASS 6 0.00-0.25 - ASLP @ pH 7.0, ASS 6 0.75 - ASLP @ pH 7.0,

ASS 7 0.00-0.25 - ASLP @ pH 7.0, ASS 7 2.0 - ASLP @ pH 7.0

01-Sep-201901-Sep-2019 06-Mar-201906-Mar-201905-Mar-2019 ü ü

Clear Plastic Bottle - Nitric Acid; Unfiltered (EG020B-C)

ASS 1 0.00-0.25, ASS 1 1.5,

ASS 2 0.00-0.25, ASS 2 1.0,

ASS 2 1.5, ASS 3 0.00-0.25,

ASS 3 1.0, ASS 4 0.00-0.25,

ASS 4 1.0, ASS 5 0.00-0.25,

ASS 5 0.75, ASS 6 0.00-0.25,

ASS 6 0.75, ASS 7 0.00-0.25,

ASS 7 2.0

21-Aug-201921-Aug-2019 27-Feb-201927-Feb-201922-Feb-2019 ü ü

Clear Plastic Bottle - Nitric Acid; Unfiltered (EG020B-C)

ASS 1 0.00-0.25 - ASLP @ pH 9.0, ASS 1 1.5 - ASLP @ pH 9.0,

ASS 2 0.00-0.25 - ASLP @ pH 9.0, ASS 2 1.0 - ASLP @ pH 9.0,

ASS 2 1.5 - ASLP @ pH 9.0, ASS 3 0.00-0.25 - ASLP @ pH 9.0,

ASS 3 1.0 - ASLP @ pH 9.0, ASS 4 0.00-0.25 - ASLP @ pH 9.0,

ASS 4 1.0 - ASLP @ pH 9.0, ASS 5 0.00-0.25 - ASLP @ pH 9.0,

ASS 5 0.75 - ASLP @ pH 9.0, ASS 6 0.00-0.25 - ASLP @ pH 9.0,

ASS 6 0.75 - ASLP @ pH 9.0, ASS 7 0.00-0.25 - ASLP @ pH 9.0,

ASS 7 2.0 - ASLP @ pH 9.0

21-Aug-201921-Aug-2019 28-Feb-201928-Feb-201922-Feb-2019 ü ü

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Quality Control Parameter Frequency ComplianceThe following report summarises the frequency of laboratory QC samples analysed within the analytical lot(s) in which the submitted sample(s) was(were) processed. Actual rate should be greater than or equal to

the expected rate. A listing of breaches is provided in the Summary of Outliers.

Matrix: SOIL Evaluation: û = Quality Control frequency not within specification ; ü = Quality Control frequency within specification.

Quality Control SpecificationQuality Control Sample Type

ExpectedQC Regular Actual

Rate (%)Quality Control Sample Type CountEvaluationAnalytical Methods Method

Laboratory Duplicates (DUP)

NEPM 2013 B3 & ALS QC Standard 16.67 10.002 12 üChromium Reducible Sulphur EA026

NEPM 2013 B3 & ALS QC Standard 13.33 10.002 15 üMoisture Content EA055

NEPM 2013 B3 & ALS QC Standard 13.33 10.002 15 üOrganic Matter EP004

NEPM 2013 B3 & ALS QC Standard 11.54 10.003 26 üSuspension Peroxide Oxidation-Combined Acidity and

Sulphate

EA029

NEPM 2013 B3 & ALS QC Standard 13.33 10.002 15 üTotal Metals by ICP-AES EG005T

NEPM 2013 B3 & ALS QC Standard 13.33 10.002 15 üTotal Metals by ICP-MS - Suite X EG020X-T

NEPM 2013 B3 & ALS QC Standard 13.33 10.002 15 üTotal Metals by ICP-MS - Suite Y EG020Y-T

Laboratory Control Samples (LCS)

NEPM 2013 B3 & ALS QC Standard 8.33 5.001 12 üChromium Reducible Sulphur EA026

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üOrganic Matter EP004

NEPM 2013 B3 & ALS QC Standard 7.69 5.002 26 üSuspension Peroxide Oxidation-Combined Acidity and

Sulphate

EA029

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üTotal Metals by ICP-AES EG005T

NEPM 2013 B3 & ALS QC Standard 0.00 5.000 15 ûTotal Metals by ICP-MS - Suite X EG020X-T

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üTotal Metals by ICP-MS - Suite Y EG020Y-T

Method Blanks (MB)

NEPM 2013 B3 & ALS QC Standard 5.00 5.003 60 üASLP for Non & Semivolatile Analytes EN60a

NEPM 2013 B3 & ALS QC Standard 8.33 5.001 12 üChromium Reducible Sulphur EA026

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üOrganic Matter EP004

NEPM 2013 B3 & ALS QC Standard 7.69 5.002 26 üSuspension Peroxide Oxidation-Combined Acidity and

Sulphate

EA029

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üTotal Metals by ICP-AES EG005T

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üTotal Metals by ICP-MS - Suite X EG020X-T

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üTotal Metals by ICP-MS - Suite Y EG020Y-T

Matrix Spikes (MS)

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üOrganic Matter EP004

NEPM 2013 B3 & ALS QC Standard 6.67 5.001 15 üTotal Metals by ICP-AES EG005T

NEPM 2013 B3 & ALS QC Standard 0.00 5.000 15 ûTotal Metals by ICP-MS - Suite X EG020X-T

NEPM 2013 B3 & ALS QC Standard 0.00 5.000 15 ûTotal Metals by ICP-MS - Suite Y EG020Y-T

Matrix: WATER Evaluation: û = Quality Control frequency not within specification ; ü = Quality Control frequency within specification.

Quality Control SpecificationQuality Control Sample Type

ExpectedQC Regular Actual

Rate (%)Quality Control Sample Type CountEvaluationAnalytical Methods Method

Laboratory Duplicates (DUP)

NEPM 2013 B3 & ALS QC Standard 13.33 10.004 30 üLeachable Metals by ICPAES EG005C

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Matrix: WATER Evaluation: û = Quality Control frequency not within specification ; ü = Quality Control frequency within specification.

Quality Control SpecificationQuality Control Sample Type

ExpectedQC Regular Actual

Rate (%)Quality Control Sample Type CountEvaluationAnalytical Methods Method

Laboratory Duplicates (DUP) - Continued

NEPM 2013 B3 & ALS QC Standard 13.33 10.008 60 üLeachable Metals by ICPMS - Suite A EG020A-C

NEPM 2013 B3 & ALS QC Standard 13.33 10.008 60 üLeachable Metals by ICPMS - Suite B EG020B-C

Laboratory Control Samples (LCS)

NEPM 2013 B3 & ALS QC Standard 6.67 5.002 30 üLeachable Metals by ICPAES EG005C

NEPM 2013 B3 & ALS QC Standard 6.67 5.004 60 üLeachable Metals by ICPMS - Suite A EG020A-C

NEPM 2013 B3 & ALS QC Standard 0.00 5.000 60 ûLeachable Metals by ICPMS - Suite B EG020B-C

Method Blanks (MB)

NEPM 2013 B3 & ALS QC Standard 6.67 5.002 30 üLeachable Metals by ICPAES EG005C

NEPM 2013 B3 & ALS QC Standard 6.67 5.004 60 üLeachable Metals by ICPMS - Suite A EG020A-C

NEPM 2013 B3 & ALS QC Standard 6.67 5.004 60 üLeachable Metals by ICPMS - Suite B EG020B-C

Matrix Spikes (MS)

NEPM 2013 B3 & ALS QC Standard 6.67 5.002 30 üLeachable Metals by ICPAES EG005C

NEPM 2013 B3 & ALS QC Standard 6.67 5.004 60 üLeachable Metals by ICPMS - Suite A EG020A-C

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Brief Method SummariesThe analytical procedures used by the Environmental Division have been developed from established internationally recognized procedures such as those published by the US EPA, APHA, AS and NEPM. In house

developed procedures are employed in the absence of documented standards or by client request. The following report provides brief descriptions of the analytical procedures employed for results reported in the

Certificate of Analysis. Sources from which ALS methods have been developed are provided within the Method Descriptions.

Analytical Methods Method DescriptionsMatrixMethod

In house: Referenced to Sullivan et al (1998) The CRS method converts reduced inorganic sulfur to H2S by

CrCl2 solution ; the evolved H2S is trapped in a zinc acetate solution as ZnS which is quantified by iodometric

titration.

Chromium Reducible Sulphur EA026 SOIL

In house: Referenced to Ahern et al 2004 - a suspension peroxide oxidation method following the 'sulfur trail' by

determining the level of 1M KCL extractable sulfur and the sulfur level after oxidation of soil sulphides. The

'acidity trail' is followed by measurement of TAA, TPA and TSA. Liming Rate is based on results for samples as

submitted and incorporates a minimum safety factor of 1.5.

Suspension Peroxide

Oxidation-Combined Acidity and

Sulphate

EA029 SOIL

In house: A gravimetric procedure based on weight loss over a 12 hour drying period at 105-110 degrees C.

This method is compliant with NEPM (2013) Schedule B(3) Section 7.1 and Table 1 (14 day holding time).

Moisture Content EA055 SOIL

In house: referenced to APHA 3120; USEPA SW 846 - 6010: The ICPAES technique ionises leachate sample

atoms emitting a characteristic spectrum. This spectrum is then compared against matrix matched standards for

quantification. This method is compliant with NEPM (2013) Schedule B(3)

Leachable Metals by ICPAES EG005C SOIL

In house: Referenced to APHA 3120; USEPA SW 846 - 6010. Metals are determined following an appropriate

acid digestion of the soil. The ICPAES technique ionises samples in a plasma, emitting a characteristic

spectrum based on metals present. Intensities at selected wavelengths are compared against those of matrix

matched standards. This method is compliant with NEPM (2013) Schedule B(3)

Total Metals by ICP-AES EG005T SOIL

In house: Referenced to APHA 3125; USEPA SW846 - 6020, ALS QWI-EN/EG020: The ICPMS technique utilizes a

highly efficient argon plasma to ionize selected elements. Ions are then passed into a high vacuum mass

spectrometer, which separates the analytes based on their distinct mass to charge ratios prior to their

measurement by a discrete dynode ion detector.

Leachable Metals by ICPMS - Suite A EG020A-C SOIL

In house: referenced to APHA 3125; USEPA SW846 - 6020, ALS QWI-EN/EG020. The ICPMS technique utilizes a

highly efficient argon plasma to ionize selected elements. Ions are then passed into a high vacuum mass

spectrometer, which separates the analytes based on their distinct mass to charge ratios prior to their

measurement by a discrete dynode ion detector.

Leachable Metals by ICPMS - Suite B EG020B-C SOIL

In house: Referenced to APHA 3125; USEPA SW846 - 6020, ALS QWI-EN/EG020. The ICPMS technique utilizes

a highly efficient argon plasma to ionize selected elements. Ions are then passed into a high vacuum mass

spectrometer, which separates the analytes based on their distinct mass to charge ratios prior to their

measurement by a discrete dynode ion detector.

Total Metals by ICP-MS - Suite X EG020X-T SOIL

In house: Referenced to APHA 3125; USEPA SW846 - 6020, ALS QWI-EN/EG020. The ICPMS technique utilizes

a highly efficient argon plasma to ionize selected elements. Ions are then passed into a high vacuum mass

spectrometer, which separates the analytes based on their distinct mass to charge ratios prior to their

measurement by a discrete dynode ion detector.

Total Metals by ICP-MS - Suite Y EG020Y-T SOIL

In house: Referenced to AS1289.4.1.1 - 1997. Dichromate oxidation method after Walkley and Black. This

method is compliant with NEPM (2013) Schedule B(3).

Organic Matter EP004 SOIL

Preparation Methods Method DescriptionsMatrixMethod

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Preparation Methods Method DescriptionsMatrixMethod

In houseDrying at 85 degrees, bagging and

labelling (ASS)

EN020PR SOIL

In house: Referenced to USEPA SW846-3005. Method 3005 is a Nitric/Hydrochloric acid digestion procedure

used to prepare surface and ground water samples for analysis by ICPAES or ICPMS. This method is compliant

with NEPM (2013) Schedule B(3)

Digestion for Total Recoverable Metals

in TCLP Leachate

EN25C SOIL

In house QWI-EN/60 referenced to AS4439.3 Preparation of LeachatesASLP for Non & Semivolatile Analytes EN60a SOIL

In house: Referenced to USEPA 200.2. Hot Block Acid Digestion 1.0g of sample is heated with Nitric and

Hydrochloric acids, then cooled. Peroxide is added and samples heated and cooled again before being filtered

and bulked to volume for analysis. Digest is appropriate for determination of selected metals in sludge,

sediments, and soils. This method is compliant with NEPM (2013) Schedule B(3) (Method 202)

Hot Block Digest for metals in soils

sediments and sludges

EN69 SOIL

In house: Referenced to AS1289.4.1.1 - 1997. Dichromate oxidation method after Walkley and Black. This

method is compliant with NEPM (2013) Schedule B(3) (Method 105)

Organic Matter EP004-PR SOIL

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False

4 4.00True

Environmental

QUALITY CONTROL REPORTWork Order : EB1904386 Page : 1 of 19

:Amendment 1

:: LaboratoryClient Environmental Division BrisbanePENDRAGON ENVIRONMENTAL SOLUTIONS

:Contact MR RYAN LAWRENCE :Contact Customer Services EB

:Address 310 NEWCASTLE STREET

NORTHBRIDGE WESTERN AUSTRALIA 6003

Address : 2 Byth Street Stafford QLD Australia 4053

::Telephone +61 08 9382 8286 +61-7-3243 7222:Telephone

:Project PES18020 Date Samples Received : 20-Feb-2019

:Order number Date Analysis Commenced : 21-Feb-2019

:C-O-C number ---- Issue Date : 07-Mar-2019

Sampler : RYAN LAWRENCE

Site : SLP

Quote number : EN/222

No. of samples received 70:

No. of samples analysed 70:

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This document shall not be reproduced, except in full.

This Quality Control Report contains the following information:

l Laboratory Duplicate (DUP) Report; Relative Percentage Difference (RPD) and Acceptance Limits

l Method Blank (MB) and Laboratory Control Spike (LCS) Report ; Recovery and Acceptance Limits

l Matrix Spike (MS) Report; Recovery and Acceptance Limits

SignatoriesThis document has been electronically signed by the authorized signatories below. Electronic signing is carried out in compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Ben Felgendrejeris Senior Acid Sulfate Soil Chemist Brisbane Acid Sulphate Soils, Stafford, QLD

Kim McCabe Senior Inorganic Chemist Brisbane Inorganics, Stafford, QLD

Mark Hallas Senior Inorganic Chemist Brisbane Inorganics, Stafford, QLD

Tom Maloney Senior Inorganic Chemist Brisbane Inorganics, 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

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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.

Anonymous = Refers to samples which are not specifically part of this work order but formed part of the QC process lot

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

RPD = Relative Percentage Difference

# = Indicates failed QC

Key :

Laboratory Duplicate (DUP) Report

The quality control term Laboratory Duplicate refers to a randomly selected intralaboratory split. Laboratory duplicates provide information regarding method precision and sample heterogeneity. The permitted ranges

for the Relative Percent Deviation (RPD) of Laboratory Duplicates are specified in ALS Method QWI -EN/38 and are dependent on the magnitude of results in comparison to the level of reporting: Result < 10 times LOR:

No Limit; Result between 10 and 20 times LOR: 0% - 50%; Result > 20 times LOR: 0% - 20%.

Sub-Matrix: SOIL Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EA026 : Chromium Reducible Sulfur (QC Lot: 2207820)

EA026: Chromium Reducible Sulphur ---- 0.005 % <0.005 0.006 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EA026: Chromium Reducible Sulphur ---- 0.005 % 0.018 0.017 0.00 No LimitASS 7 0.00-0.25 EB1904386-021

EA029-A: pH Measurements (QC Lot: 2207819)

EA029: pH KCl (23A) ---- 0.1 pH Unit 7.5 7.7 2.63 0% - 20%ASS 3 1.0 EB1904386-011

EA029: pH OX (23B) ---- 0.1 pH Unit 7.7 7.7 0.00 0% - 20%

EA029: pH KCl (23A) ---- 0.1 pH Unit 8.3 8.5 2.38 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EA029: pH OX (23B) ---- 0.1 pH Unit 7.7 7.7 0.00 0% - 20%

EA029-A: pH Measurements (QC Lot: 2207821)

EA029: pH KCl (23A) ---- 0.1 pH Unit 8.3 8.5 2.38 0% - 20%ASS 7 0.00-0.25 EB1904386-021

EA029: pH OX (23B) ---- 0.1 pH Unit 7.8 7.8 0.00 0% - 20%

EA029-B: Acidity Trail (QC Lot: 2207819)

EA029: sulfidic - Titratable Actual Acidity (s-23F) ---- 0.02 % pyrite S <0.020 <0.020 0.00 No LimitASS 3 1.0 EB1904386-011

EA029: sulfidic - Titratable Peroxide Acidity

(s-23G)

---- 0.02 % pyrite S <0.020 <0.020 0.00 No Limit

EA029: sulfidic - Titratable Sulfidic Acidity

(s-23H)

---- 0.02 % pyrite S <0.020 <0.020 0.00 No Limit

EA029: Titratable Actual Acidity (23F) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029: Titratable Peroxide Acidity (23G) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029: Titratable Sulfidic Acidity (23H) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029: sulfidic - Titratable Actual Acidity (s-23F) ---- 0.02 % pyrite S <0.020 <0.020 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EA029: sulfidic - Titratable Peroxide Acidity

(s-23G)

---- 0.02 % pyrite S <0.020 <0.020 0.00 No Limit

EA029: sulfidic - Titratable Sulfidic Acidity

(s-23H)

---- 0.02 % pyrite S <0.020 <0.020 0.00 No Limit

EA029: Titratable Actual Acidity (23F) ---- 2 mole H+ / t <2 <2 0.00 No Limit

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:Client

EB1904386 Amendment 1

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

Sub-Matrix: SOIL Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EA029-B: Acidity Trail (QC Lot: 2207819) - continued

EA029: Titratable Peroxide Acidity (23G) ---- 2 mole H+ / t <2 <2 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EA029: Titratable Sulfidic Acidity (23H) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029-B: Acidity Trail (QC Lot: 2207821)

EA029: sulfidic - Titratable Actual Acidity (s-23F) ---- 0.02 % pyrite S <0.020 <0.020 0.00 No LimitASS 7 0.00-0.25 EB1904386-021

EA029: sulfidic - Titratable Peroxide Acidity

(s-23G)

---- 0.02 % pyrite S <0.020 <0.020 0.00 No Limit

EA029: sulfidic - Titratable Sulfidic Acidity

(s-23H)

---- 0.02 % pyrite S <0.020 <0.020 0.00 No Limit

EA029: Titratable Actual Acidity (23F) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029: Titratable Peroxide Acidity (23G) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029: Titratable Sulfidic Acidity (23H) ---- 2 mole H+ / t <2 <2 0.00 No Limit

EA029-C: Sulfur Trail (QC Lot: 2207819)

EA029: KCl Extractable Sulfur (23Ce) ---- 0.02 % S 0.939 0.867 8.00 0% - 20%ASS 3 1.0 EB1904386-011

EA029: Peroxide Sulfur (23De) ---- 0.02 % S 0.642 0.646 0.528 0% - 20%

EA029: Peroxide Oxidisable Sulfur (23E) ---- 0.02 % S <0.020 <0.020 0.00 No Limit

EA029: acidity - Peroxide Oxidisable Sulfur

(a-23E)

---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029: KCl Extractable Sulfur (23Ce) ---- 0.02 % S 0.814 0.859 5.37 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EA029: Peroxide Sulfur (23De) ---- 0.02 % S 0.674 0.698 3.50 0% - 20%

EA029: Peroxide Oxidisable Sulfur (23E) ---- 0.02 % S <0.020 <0.020 0.00 No Limit

EA029: acidity - Peroxide Oxidisable Sulfur

(a-23E)

---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029-C: Sulfur Trail (QC Lot: 2207821)

EA029: KCl Extractable Sulfur (23Ce) ---- 0.02 % S 11.0 11.5 3.88 0% - 20%ASS 7 0.00-0.25 EB1904386-021

EA029: Peroxide Sulfur (23De) ---- 0.02 % S 10.0 10.6 5.25 0% - 20%

EA029: Peroxide Oxidisable Sulfur (23E) ---- 0.02 % S <0.020 <0.020 0.00 No Limit

EA029: acidity - Peroxide Oxidisable Sulfur

(a-23E)

---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029-D: Calcium Values (QC Lot: 2207819)

EA029: KCl Extractable Calcium (23Vh) ---- 0.02 % Ca 0.048 0.047 2.93 No LimitASS 3 1.0 EB1904386-011

EA029: Peroxide Calcium (23Wh) ---- 0.02 % Ca 0.054 0.052 4.13 No Limit

EA029: Acid Reacted Calcium (23X) ---- 0.02 % Ca <0.020 <0.020 0.00 No Limit

EA029: sulfidic - Acid Reacted Calcium (s-23X) ---- 0.02 % S <0.020 <0.020 0.00 No Limit

EA029: acidity - Acid Reacted Calcium (a-23X) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029: KCl Extractable Calcium (23Vh) ---- 0.02 % Ca 0.621 0.669 7.39 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EA029: Peroxide Calcium (23Wh) ---- 0.02 % Ca 0.588 0.584 0.768 0% - 20%

EA029: Acid Reacted Calcium (23X) ---- 0.02 % Ca <0.020 <0.020 0.00 No Limit

EA029: sulfidic - Acid Reacted Calcium (s-23X) ---- 0.02 % S <0.020 <0.020 0.00 No Limit

EA029: acidity - Acid Reacted Calcium (a-23X) ---- 10 mole H+ / t <10 <10 0.00 No Limit

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EB1904386 Amendment 1

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

Sub-Matrix: SOIL Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EA029-D: Calcium Values (QC Lot: 2207821)

EA029: KCl Extractable Calcium (23Vh) ---- 0.02 % Ca 13.9 14.4 3.36 0% - 20%ASS 7 0.00-0.25 EB1904386-021

EA029: Peroxide Calcium (23Wh) ---- 0.02 % Ca 11.7 12.0 2.55 0% - 20%

EA029: Acid Reacted Calcium (23X) ---- 0.02 % Ca <0.020 <0.020 0.00 No Limit

EA029: sulfidic - Acid Reacted Calcium (s-23X) ---- 0.02 % S <0.020 <0.020 0.00 No Limit

EA029: acidity - Acid Reacted Calcium (a-23X) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029-E: Magnesium Values (QC Lot: 2207819)

EA029: KCl Extractable Magnesium (23Sm) ---- 0.02 % Mg 0.587 0.567 3.57 0% - 20%ASS 3 1.0 EB1904386-011

EA029: Peroxide Magnesium (23Tm) ---- 0.02 % Mg 0.886 0.902 1.74 0% - 20%

EA029: Acid Reacted Magnesium (23U) ---- 0.02 % Mg 0.299 0.335 11.4 0% - 50%

EA029: sulfidic - Acid Reacted Magnesium

(s-23U)

---- 0.02 % S 0.394 0.442 11.4 0% - 20%

EA029: Acidity - Acid Reacted Magnesium

(a-23U)

---- 10 mole H+ / t 246 276 11.4 0% - 20%

EA029: KCl Extractable Magnesium (23Sm) ---- 0.02 % Mg 0.193 0.204 5.47 0% - 50%ASS 1 0.00-0.25 EB1904386-001

EA029: Peroxide Magnesium (23Tm) ---- 0.02 % Mg 0.935 0.941 0.565 0% - 20%

EA029: Acid Reacted Magnesium (23U) ---- 0.02 % Mg 0.742 0.736 0.752 0% - 20%

EA029: sulfidic - Acid Reacted Magnesium

(s-23U)

---- 0.02 % S 0.979 0.972 0.752 0% - 20%

EA029: Acidity - Acid Reacted Magnesium

(a-23U)

---- 10 mole H+ / t 610 606 0.752 0% - 20%

EA029-E: Magnesium Values (QC Lot: 2207821)

EA029: KCl Extractable Magnesium (23Sm) ---- 0.02 % Mg 0.085 0.086 2.13 No LimitASS 7 0.00-0.25 EB1904386-021

EA029: Peroxide Magnesium (23Tm) ---- 0.02 % Mg 0.379 0.422 10.9 0% - 20%

EA029: Acid Reacted Magnesium (23U) ---- 0.02 % Mg 0.294 0.336 13.2 0% - 50%

EA029: sulfidic - Acid Reacted Magnesium

(s-23U)

---- 0.02 % S 0.388 0.443 13.2 0% - 20%

EA029: Acidity - Acid Reacted Magnesium

(a-23U)

---- 10 mole H+ / t 242 276 13.2 0% - 20%

EA029-F: Excess Acid Neutralising Capacity (QC Lot: 2207819)

EA029: Excess Acid Neutralising Capacity (23Q) ---- 0.02 % CaCO3 1.73 1.74 0.534 0% - 20%ASS 3 1.0 EB1904386-011

EA029: sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

---- 0.02 % S 0.553 0.556 0.534 0% - 20%

EA029: acidity - Excess Acid Neutralising

Capacity (a-23Q)

---- 10 mole H+ / t 345 347 0.534 0% - 20%

EA029: Excess Acid Neutralising Capacity (23Q) ---- 0.02 % CaCO3 3.06 3.06 0.0408 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EA029: sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

---- 0.02 % S 0.981 0.981 0.00 0% - 20%

EA029: acidity - Excess Acid Neutralising

Capacity (a-23Q)

---- 10 mole H+ / t 612 612 0.00 0% - 20%

EA029-F: Excess Acid Neutralising Capacity (QC Lot: 2207821)

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:Client

EB1904386 Amendment 1

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

Sub-Matrix: SOIL Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EA029-F: Excess Acid Neutralising Capacity (QC Lot: 2207821) - continued

EA029: Excess Acid Neutralising Capacity (23Q) ---- 0.02 % CaCO3 2.47 2.46 0.00 0% - 20%ASS 7 0.00-0.25 EB1904386-021

EA029: sulfidic - Excess Acid Neutralising

Capacity (s-23Q)

---- 0.02 % S 0.789 0.789 0.00 0% - 20%

EA029: acidity - Excess Acid Neutralising

Capacity (a-23Q)

---- 10 mole H+ / t 493 493 0.00 0% - 20%

EA029-H: Acid Base Accounting (QC Lot: 2207819)

EA029: ANC Fineness Factor ---- 0.5 - 1.5 1.5 0.00 No LimitASS 3 1.0 EB1904386-011

EA029: Net Acidity (sulfur units) ---- 0.02 % S <0.02 <0.02 0.00 No Limit

EA029: Net Acidity excluding ANC (sulfur units) ---- 0.02 % S <0.02 <0.02 0.00 No Limit

EA029: Liming Rate ---- 1 kg CaCO3/t <1 <1 0.00 No Limit

EA029: Liming Rate excluding ANC ---- 1 kg CaCO3/t <1 <1 0.00 No Limit

EA029: Net Acidity (acidity units) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029: Net Acidity excluding ANC (acidity units) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029: ANC Fineness Factor ---- 0.5 - 1.5 1.5 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EA029: Net Acidity (sulfur units) ---- 0.02 % S <0.02 <0.02 0.00 No Limit

EA029: Net Acidity excluding ANC (sulfur units) ---- 0.02 % S <0.02 <0.02 0.00 No Limit

EA029: Liming Rate ---- 1 kg CaCO3/t <1 <1 0.00 No Limit

EA029: Liming Rate excluding ANC ---- 1 kg CaCO3/t <1 <1 0.00 No Limit

EA029: Net Acidity (acidity units) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029: Net Acidity excluding ANC (acidity units) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029-H: Acid Base Accounting (QC Lot: 2207821)

EA029: ANC Fineness Factor ---- 0.5 - 1.5 1.5 0.00 No LimitASS 7 0.00-0.25 EB1904386-021

EA029: Net Acidity (sulfur units) ---- 0.02 % S <0.02 <0.02 0.00 No Limit

EA029: Net Acidity excluding ANC (sulfur units) ---- 0.02 % S <0.02 <0.02 0.00 No Limit

EA029: Liming Rate ---- 1 kg CaCO3/t <1 <1 0.00 No Limit

EA029: Liming Rate excluding ANC ---- 1 kg CaCO3/t <1 <1 0.00 No Limit

EA029: Net Acidity (acidity units) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA029: Net Acidity excluding ANC (acidity units) ---- 10 mole H+ / t <10 <10 0.00 No Limit

EA055: Moisture Content (Dried @ 105-110°C) (QC Lot: 2198406)

EA055: Moisture Content ---- 0.1 % 30.3 30.7 1.33 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EA055: Moisture Content ---- 0.1 % 23.3 23.5 0.852 0% - 20%ASS 5 0.75 EB1904386-017

EG005T: Total Metals by ICP-AES (QC Lot: 2198403)

EG005T: Cadmium 7440-43-9 1 mg/kg <1 <1 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EG005T: Chromium 7440-47-3 2 mg/kg 76 82 8.53 0% - 20%

EG005T: Cobalt 7440-48-4 2 mg/kg 5 6 25.0 No Limit

EG005T: Nickel 7440-02-0 2 mg/kg 15 18 17.7 No Limit

EG005T: Arsenic 7440-38-2 5 mg/kg 6 7 0.00 No Limit

EG005T: Copper 7440-50-8 5 mg/kg 26 28 6.43 No Limit

EG005T: Lead 7439-92-1 5 mg/kg 5 7 29.2 No Limit

EG005T: Manganese 7439-96-5 5 mg/kg 134 # 265 65.3 0% - 20%

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:Client

EB1904386 Amendment 1

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

Sub-Matrix: SOIL Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG005T: Total Metals by ICP-AES (QC Lot: 2198403) - continued

EG005T: Selenium 7782-49-2 5 mg/kg <5 <5 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EG005T: Vanadium 7440-62-2 5 mg/kg 86 84 1.86 0% - 50%

EG005T: Zinc 7440-66-6 5 mg/kg 33 36 8.98 No Limit

EG005T: Iron 7439-89-6 50 mg/kg 33000 35600 7.54 0% - 20%

EG005T: Cadmium 7440-43-9 1 mg/kg <1 <1 0.00 No LimitASS 5 0.75 EB1904386-017

EG005T: Chromium 7440-47-3 2 mg/kg 10 17 50.4 No Limit

EG005T: Cobalt 7440-48-4 2 mg/kg <2 <2 0.00 No Limit

EG005T: Nickel 7440-02-0 2 mg/kg 17 10 56.4 No Limit

EG005T: Arsenic 7440-38-2 5 mg/kg <5 <5 0.00 No Limit

EG005T: Copper 7440-50-8 5 mg/kg 50 47 5.48 No Limit

EG005T: Lead 7439-92-1 5 mg/kg <5 <5 0.00 No Limit

EG005T: Manganese 7439-96-5 5 mg/kg 962 # 473 68.2 0% - 20%

EG005T: Selenium 7782-49-2 5 mg/kg <5 <5 0.00 No Limit

EG005T: Vanadium 7440-62-2 5 mg/kg 54 # 102 62.5 0% - 20%

EG005T: Zinc 7440-66-6 5 mg/kg 6 <5 0.00 No Limit

EG005T: Iron 7439-89-6 50 mg/kg 18500 # 27500 38.9 0% - 20%

EG020T: Total Metals by ICP-MS (QC Lot: 2198404)

EG020X-T: Uranium 7440-61-1 0.1 mg/kg 17.4 19.5 11.1 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EG020X-T: Lithium 7439-93-2 0.1 mg/kg 5.6 5.3 4.48 0% - 20%

EG020X-T: Uranium 7440-61-1 0.1 mg/kg 3.0 3.2 7.88 0% - 20%ASS 5 0.75 EB1904386-017

EG020X-T: Lithium 7439-93-2 0.1 mg/kg 0.3 0.3 0.00 No Limit

EG020T: Total Metals by ICP-MS (QC Lot: 2198405)

EG020Y-T: Thorium 7440-29-1 0.1 mg/kg 5.2 5.4 5.20 0% - 20%ASS 1 0.00-0.25 EB1904386-001

EG020Y-T: Thorium 7440-29-1 0.1 mg/kg 0.2 0.2 0.00 No LimitASS 5 0.75 EB1904386-017

EP004: Organic Matter (QC Lot: 2200539)

EP004: Organic Matter ---- 0.5 % 0.9 0.9 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EP004: Total Organic Carbon ---- 0.5 % 0.5 0.5 0.00 No Limit

EP004: Organic Matter ---- 0.5 % 0.6 0.6 0.00 No LimitASS 5 0.00-0.25 EB1904386-015

EP004: Total Organic Carbon ---- 0.5 % <0.5 <0.5 0.00 No Limit

Sub-Matrix: WATER Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG005C: Leachable Metals by ICPAES (QC Lot: 2206683)

EG005C: Cadmium 7440-43-9 0.05 mg/L <0.05 <0.05 0.00 No LimitASS 5 0.00-0.25 EB1904386-015

EG005C: Selenium 7782-49-2 0.05 mg/L <0.05 <0.05 0.00 No Limit

EG005C: Arsenic 7440-38-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Chromium 7440-47-3 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Cobalt 7440-48-4 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Copper 7440-50-8 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Iron 7439-89-6 0.1 mg/L 0.2 0.2 0.00 No Limit

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:Client

EB1904386 Amendment 1

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

Sub-Matrix: WATER Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG005C: Leachable Metals by ICPAES (QC Lot: 2206683) - continued

EG005C: Lead 7439-92-1 0.1 mg/L <0.1 <0.1 0.00 No LimitASS 5 0.00-0.25 EB1904386-015

EG005C: Manganese 7439-96-5 0.1 mg/L 2.8 2.8 0.00 0% - 20%

EG005C: Nickel 7440-02-0 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Vanadium 7440-62-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Zinc 7440-66-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Cadmium 7440-43-9 0.05 mg/L <0.05 <0.05 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EG005C: Selenium 7782-49-2 0.05 mg/L <0.05 <0.05 0.00 No Limit

EG005C: Arsenic 7440-38-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Chromium 7440-47-3 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Cobalt 7440-48-4 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Copper 7440-50-8 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Iron 7439-89-6 0.1 mg/L 1.0 1.0 0.00 0% - 50%

EG005C: Lead 7439-92-1 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Manganese 7439-96-5 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Nickel 7440-02-0 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Vanadium 7440-62-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Zinc 7440-66-6 0.1 mg/L 0.2 0.2 0.00 No Limit

EG005C: Leachable Metals by ICPAES (QC Lot: 2209660)

EG005C: Cadmium 7440-43-9 0.05 mg/L <0.05 <0.05 0.00 No LimitASS 5 0.00-0.25 ASLP @

pH 9.0

EB1904386-035

EG005C: Selenium 7782-49-2 0.05 mg/L <0.05 <0.05 0.00 No Limit

EG005C: Arsenic 7440-38-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Chromium 7440-47-3 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Cobalt 7440-48-4 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Copper 7440-50-8 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Iron 7439-89-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Lead 7439-92-1 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Manganese 7439-96-5 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Nickel 7440-02-0 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Vanadium 7440-62-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Zinc 7440-66-6 0.1 mg/L <0.5 <0.5 0.00 No Limit

EG005C: Cadmium 7440-43-9 0.05 mg/L <0.05 <0.05 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 9.0

EB1904386-026

EG005C: Selenium 7782-49-2 0.05 mg/L <0.05 <0.05 0.00 No Limit

EG005C: Arsenic 7440-38-2 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Chromium 7440-47-3 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Cobalt 7440-48-4 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Copper 7440-50-8 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Iron 7439-89-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Lead 7439-92-1 0.1 mg/L <0.1 <0.1 0.00 No Limit

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:Client

EB1904386 Amendment 1

PENDRAGON ENVIRONMENTAL SOLUTIONS

PES18020:Project

Sub-Matrix: WATER Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG005C: Leachable Metals by ICPAES (QC Lot: 2209660) - continued

EG005C: Manganese 7439-96-5 0.1 mg/L <0.1 <0.1 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 9.0

EB1904386-026

EG005C: Nickel 7440-02-0 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG005C: Vanadium 7440-62-2 0.1 mg/L 0.2 0.1 0.00 No Limit

EG005C: Zinc 7440-66-6 0.1 mg/L <0.5 <0.5 0.00 No Limit

EG020C: Leachable Metals by ICPMS (QC Lot: 2206681)

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 5 0.75 EB1904386-017

EG020A-C: Lithium 7439-93-2 0.001 mg/L 0.003 0.003 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 <0.005 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L 0.27 0.26 0.00 0% - 20%

EG020A-C: Nickel 7440-02-0 0.01 mg/L 0.04 0.04 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L 6.1 6.0 0.00 0% - 20%

EG020A-C: Zinc 7440-66-6 0.1 mg/L 0.1 0.1 0.00 No Limit

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EG020A-C: Lithium 7439-93-2 0.001 mg/L 0.006 0.007 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 <0.005 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L 0.03 0.03 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L 0.13 0.13 0.00 0% - 50%

EG020A-C: Nickel 7440-02-0 0.01 mg/L 0.01 0.01 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L 1.3 1.3 0.00 0% - 50%

EG020A-C: Zinc 7440-66-6 0.1 mg/L 0.2 0.2 0.00 No Limit

EG020C: Leachable Metals by ICPMS (QC Lot: 2206682)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 5 0.00-0.25 EB1904386-015

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.064 0.066 3.19 0% - 20%

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 1 0.00-0.25 EB1904386-001

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.079 0.085 6.90 0% - 20%

EG020C: Leachable Metals by ICPMS (QC Lot: 2209661)

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.005 <0.005 0.00 No LimitASS 5 0.75 ASLP @ pH 9.0EB1904386-036

EG020A-C: Lithium 7439-93-2 0.001 mg/L <0.005 <0.005 0.00 No Limit

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Sub-Matrix: WATER Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG020C: Leachable Metals by ICPMS (QC Lot: 2209661) - continued

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.026 <0.026 0.00 No LimitASS 5 0.75 ASLP @ pH 9.0EB1904386-036

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.5 <0.5 0.00 No Limit

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.5 <0.5 0.00 No Limit

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.005 <0.005 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 9.0

EB1904386-026

EG020A-C: Lithium 7439-93-2 0.001 mg/L <0.005 <0.005 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.026 <0.026 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.05 <0.05 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L 0.13 0.13 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.5 <0.5 0.00 No Limit

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.5 <0.5 0.00 No Limit

EG020C: Leachable Metals by ICPMS (QC Lot: 2209662)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.005 <0.005 0.00 No LimitASS 5 0.00-0.25 ASLP @

pH 9.0

EB1904386-035

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.009 0.009 0.00 No Limit

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.005 <0.005 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 9.0

EB1904386-026

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.007 0.006 0.00 No Limit

EG020C: Leachable Metals by ICPMS (QC Lot: 2219445)

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 4.0

EB1904386-041

EG020A-C: Lithium 7439-93-2 0.001 mg/L 0.009 0.010 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 <0.005 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L 0.09 0.09 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 <0.01 0.00 No Limit

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Sub-Matrix: WATER Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG020C: Leachable Metals by ICPMS (QC Lot: 2219445) - continued

EG020A-C: Manganese 7439-96-5 0.01 mg/L 0.46 0.46 0.00 0% - 20%ASS 1 0.00-0.25 ASLP @

pH 4.0

EB1904386-041

EG020A-C: Nickel 7440-02-0 0.01 mg/L 0.03 0.03 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L 3.9 3.8 3.44 0% - 20%

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 5 0.00-0.25 ASLP @

pH 4.0

EB1904386-050

EG020A-C: Lithium 7439-93-2 0.001 mg/L 0.004 0.004 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L 0.006 0.006 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L 0.01 0.01 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L 0.02 0.02 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L 4.83 4.86 0.621 0% - 20%

EG020A-C: Nickel 7440-02-0 0.01 mg/L 0.05 0.05 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L 4.4 4.4 0.00 0% - 20%

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG020C: Leachable Metals by ICPMS (QC Lot: 2219446)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 4.0

EB1904386-041

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.202 0.201 0.00 0% - 20%

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 5 0.00-0.25 ASLP @

pH 4.0

EB1904386-050

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.112 0.115 3.10 0% - 20%

EG020C: Leachable Metals by ICPMS (QC Lot: 2219447)

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 7.0

EB1904386-056

EG020A-C: Lithium 7439-93-2 0.001 mg/L 0.002 0.002 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 <0.005 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L 0.02 0.02 0.00 No Limit

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 <0.01 0.00 No Limit

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Sub-Matrix: WATER Laboratory Duplicate (DUP) Report

Original Result RPD (%)Laboratory sample ID Client sample ID Method: Compound CAS Number LOR Unit Duplicate Result Recovery Limits (%)

EG020C: Leachable Metals by ICPMS (QC Lot: 2219447) - continued

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 <0.01 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 7.0

EB1904386-056

EG020A-C: Vanadium 7440-62-2 0.01 mg/L 0.01 0.01 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L 1.8 1.8 0.00 0% - 50%

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 5 0.00-0.25 ASLP @

pH 7.0

EB1904386-065

EG020A-C: Lithium 7439-93-2 0.001 mg/L 0.002 0.002 0.00 No Limit

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 <0.005 0.00 No Limit

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Manganese 7439-96-5 0.01 mg/L 0.14 0.14 0.00 0% - 50%

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 <0.01 0.00 No Limit

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.1 <0.1 0.00 No Limit

EG020C: Leachable Metals by ICPMS (QC Lot: 2219448)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 1 0.00-0.25 ASLP @

pH 7.0

EB1904386-056

EG020B-C: Uranium 7440-61-1 0.001 mg/L 0.002 0.002 0.00 No Limit

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 <0.001 0.00 No LimitASS 5 0.00-0.25 ASLP @

pH 7.0

EB1904386-065

EG020B-C: Uranium 7440-61-1 0.001 mg/L <0.001 <0.001 0.00 No Limit

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Method Blank (MB) and Laboratory Control Spike (LCS) Report

The quality control term Method / Laboratory Blank refers to an analyte free matrix to which all reagents are added in the same volumes or proportions as used in standard sample preparation. The purpose of this QC

parameter is to monitor potential laboratory contamination. The quality control term Laboratory Control Spike (LCS) refers to a certified reference material, or a known interference free matrix spiked with target

analytes. The purpose of this QC parameter is to monitor method precision and accuracy independent of sample matrix. Dynamic Recovery Limits are based on statistical evaluation of processed LCS.

Sub-Matrix: SOIL Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EA026 : Chromium Reducible Sulfur (QCLot: 2207820)

EA026: Chromium Reducible Sulphur ---- 0.005 % <0.005 91.30.25483 % 13070

EA029-A: pH Measurements (QCLot: 2207819)

EA029: pH KCl (23A) ---- 0.1 pH Unit <0.1 97.84.5 pH Unit 13070

EA029: pH OX (23B) ---- 0.1 pH Unit <0.1 95.64.5 pH Unit 13070

EA029-A: pH Measurements (QCLot: 2207821)

EA029: pH KCl (23A) ---- 0.1 pH Unit <0.1 97.84.5 pH Unit 13070

EA029: pH OX (23B) ---- 0.1 pH Unit <0.1 97.84.5 pH Unit 13070

EA029-B: Acidity Trail (QCLot: 2207819)

EA029: Titratable Actual Acidity (23F) ---- 2 mole H+ / t <2 93.024.6 mole H+ / t 13070

EA029: Titratable Peroxide Acidity (23G) ---- 2 mole H+ / t <2 91.629.1 mole H+ / t 13070

EA029: Titratable Sulfidic Acidity (23H) ---- 2 mole H+ / t <2 -------- --------

EA029: sulfidic - Titratable Actual Acidity (s-23F) ---- 0.02 % pyrite S <0.020 -------- --------

EA029: sulfidic - Titratable Peroxide Acidity (s-23G) ---- 0.02 % pyrite S <0.020 -------- --------

EA029: sulfidic - Titratable Sulfidic Acidity (s-23H) ---- 0.02 % pyrite S <0.020 -------- --------

EA029-B: Acidity Trail (QCLot: 2207821)

EA029: Titratable Actual Acidity (23F) ---- 2 mole H+ / t <2 91.824.6 mole H+ / t 13070

EA029: Titratable Peroxide Acidity (23G) ---- 2 mole H+ / t <2 83.529.1 mole H+ / t 13070

EA029: Titratable Sulfidic Acidity (23H) ---- 2 mole H+ / t <2 -------- --------

EA029: sulfidic - Titratable Actual Acidity (s-23F) ---- 0.02 % pyrite S <0.020 -------- --------

EA029: sulfidic - Titratable Peroxide Acidity (s-23G) ---- 0.02 % pyrite S <0.020 -------- --------

EA029: sulfidic - Titratable Sulfidic Acidity (s-23H) ---- 0.02 % pyrite S <0.020 -------- --------

EA029-C: Sulfur Trail (QCLot: 2207819)

EA029: KCl Extractable Sulfur (23Ce) ---- 0.02 % S <0.020 87.30.052 % S 13070

EA029: Peroxide Sulfur (23De) ---- 0.02 % S <0.020 1060.145 % S 13070

EA029: Peroxide Oxidisable Sulfur (23E) ---- 0.02 % S <0.020 -------- --------

EA029: acidity - Peroxide Oxidisable Sulfur (a-23E) ---- 10 mole H+ / t <10 -------- --------

EA029-C: Sulfur Trail (QCLot: 2207821)

EA029: KCl Extractable Sulfur (23Ce) ---- 0.02 % S <0.020 91.70.052 % S 13070

EA029: Peroxide Sulfur (23De) ---- 0.02 % S <0.020 96.50.145 % S 13070

EA029: Peroxide Oxidisable Sulfur (23E) ---- 0.02 % S <0.020 -------- --------

EA029: acidity - Peroxide Oxidisable Sulfur (a-23E) ---- 10 mole H+ / t <10 -------- --------

EA029-D: Calcium Values (QCLot: 2207819)

EA029: KCl Extractable Calcium (23Vh) ---- 0.02 % Ca <0.020 1120.151 % Ca 13070

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Sub-Matrix: SOIL Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EA029-D: Calcium Values (QCLot: 2207819) - continued

EA029: Peroxide Calcium (23Wh) ---- 0.02 % Ca <0.020 96.40.296 % Ca 13070

EA029: Acid Reacted Calcium (23X) ---- 0.02 % Ca <0.020 -------- --------

EA029: acidity - Acid Reacted Calcium (a-23X) ---- 10 mole H+ / t <10 -------- --------

EA029: sulfidic - Acid Reacted Calcium (s-23X) ---- 0.02 % S <0.020 -------- --------

EA029-D: Calcium Values (QCLot: 2207821)

EA029: KCl Extractable Calcium (23Vh) ---- 0.02 % Ca <0.020 1150.151 % Ca 13070

EA029: Peroxide Calcium (23Wh) ---- 0.02 % Ca <0.020 94.50.296 % Ca 13070

EA029: Acid Reacted Calcium (23X) ---- 0.02 % Ca <0.020 -------- --------

EA029: acidity - Acid Reacted Calcium (a-23X) ---- 10 mole H+ / t <10 -------- --------

EA029: sulfidic - Acid Reacted Calcium (s-23X) ---- 0.02 % S <0.020 -------- --------

EA029-E: Magnesium Values (QCLot: 2207819)

EA029: KCl Extractable Magnesium (23Sm) ---- 0.02 % Mg <0.020 1080.176 % Mg 13070

EA029: Peroxide Magnesium (23Tm) ---- 0.02 % Mg <0.020 1100.175 % Mg 13070

EA029: Acid Reacted Magnesium (23U) ---- 0.02 % Mg <0.020 -------- --------

EA029: Acidity - Acid Reacted Magnesium (a-23U) ---- 10 mole H+ / t <10 -------- --------

EA029: sulfidic - Acid Reacted Magnesium (s-23U) ---- 0.02 % S <0.020 -------- --------

EA029-E: Magnesium Values (QCLot: 2207821)

EA029: KCl Extractable Magnesium (23Sm) ---- 0.02 % Mg <0.020 1080.176 % Mg 13070

EA029: Peroxide Magnesium (23Tm) ---- 0.02 % Mg <0.020 1050.175 % Mg 13070

EA029: Acid Reacted Magnesium (23U) ---- 0.02 % Mg <0.020 -------- --------

EA029: Acidity - Acid Reacted Magnesium (a-23U) ---- 10 mole H+ / t <10 -------- --------

EA029: sulfidic - Acid Reacted Magnesium (s-23U) ---- 0.02 % S <0.020 -------- --------

EA029-F: Excess Acid Neutralising Capacity (QCLot: 2207819)

EA029: Excess Acid Neutralising Capacity (23Q) ---- 0.02 % CaCO3 <0.020 -------- --------

EA029: acidity - Excess Acid Neutralising Capacity (a-23Q) ---- 10 mole H+ / t <10 -------- --------

EA029: sulfidic - Excess Acid Neutralising Capacity

(s-23Q)

---- 0.02 % S <0.020 -------- --------

EA029-F: Excess Acid Neutralising Capacity (QCLot: 2207821)

EA029: Excess Acid Neutralising Capacity (23Q) ---- 0.02 % CaCO3 <0.020 -------- --------

EA029: acidity - Excess Acid Neutralising Capacity (a-23Q) ---- 10 mole H+ / t <10 -------- --------

EA029: sulfidic - Excess Acid Neutralising Capacity

(s-23Q)

---- 0.02 % S <0.020 -------- --------

EA029-H: Acid Base Accounting (QCLot: 2207819)

EA029: ANC Fineness Factor ---- 0.5 - <0.5 -------- --------

EA029: Net Acidity (sulfur units) ---- 0.02 % S <0.02 -------- --------

EA029: Net Acidity (acidity units) ---- 10 mole H+ / t <10 -------- --------

EA029: Liming Rate ---- 1 kg CaCO3/t <1 -------- --------

EA029: Net Acidity excluding ANC (sulfur units) ---- 0.02 % S <0.02 -------- --------

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Sub-Matrix: SOIL Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EA029-H: Acid Base Accounting (QCLot: 2207819) - continued

EA029: Net Acidity excluding ANC (acidity units) ---- 10 mole H+ / t <10 -------- --------

EA029: Liming Rate excluding ANC ---- 1 kg CaCO3/t <1 -------- --------

EA029-H: Acid Base Accounting (QCLot: 2207821)

EA029: ANC Fineness Factor ---- 0.5 - <0.5 -------- --------

EA029: Net Acidity (sulfur units) ---- 0.02 % S <0.02 -------- --------

EA029: Net Acidity (acidity units) ---- 10 mole H+ / t <10 -------- --------

EA029: Liming Rate ---- 1 kg CaCO3/t <1 -------- --------

EA029: Net Acidity excluding ANC (sulfur units) ---- 0.02 % S <0.02 -------- --------

EA029: Net Acidity excluding ANC (acidity units) ---- 10 mole H+ / t <10 -------- --------

EA029: Liming Rate excluding ANC ---- 1 kg CaCO3/t <1 -------- --------

EG005T: Total Metals by ICP-AES (QCLot: 2198403)

EG005T: Arsenic 7440-38-2 5 mg/kg <5 95.5124 mg/kg 12384

EG005T: Cadmium 7440-43-9 1 mg/kg <1 -------- --------

EG005T: Chromium 7440-47-3 2 mg/kg <2 12014.52 mg/kg 12583

EG005T: Cobalt 7440-48-4 2 mg/kg <2 93.710.3 mg/kg 12589

EG005T: Copper 7440-50-8 5 mg/kg <5 99.654 mg/kg 12286

EG005T: Iron 7439-89-6 50 mg/kg <50 10233500 mg/kg 12070

EG005T: Lead 7439-92-1 5 mg/kg <5 97.659.9 mg/kg 11984

EG005T: Manganese 7439-96-5 5 mg/kg <5 96.9541 mg/kg 11384

EG005T: Nickel 7440-02-0 2 mg/kg <2 95.914.7 mg/kg 12689

EG005T: Selenium 7782-49-2 5 mg/kg <5 -------- --------

EG005T: Vanadium 7440-62-2 5 mg/kg <5 12740.82 mg/kg 12791

EG005T: Zinc 7440-66-6 5 mg/kg <5 118106.635 mg/kg 12787

EG020T: Total Metals by ICP-MS (QCLot: 2198404)

EG020X-T: Uranium 7440-61-1 0.1 mg/kg <0.1 -------- --------

EG020X-T: Lithium 7439-93-2 0.1 mg/kg <0.1 -------- --------

EG020T: Total Metals by ICP-MS (QCLot: 2198405)

EG020Y-T: Thorium 7440-29-1 0.1 mg/kg <0.1 80.43.2 mg/kg 13070

EN60: ASLP Leaching Procedure (QCLot: 2200107)

EN60a: Final pH ---- 0.1 pH Unit 4.7 -------- --------

EN60: ASLP Leaching Procedure (QCLot: 2200109)

EN60a: Final pH ---- 0.1 pH Unit 9.3 -------- --------

EN60: ASLP Leaching Procedure (QCLot: 2216762)

EN60a: Final pH ---- 0.1 pH Unit 7.0 -------- --------

EP004: Organic Matter (QCLot: 2200539)

EP004: Organic Matter ---- 0.5 % <0.5 10380 % 11583

EP004: Total Organic Carbon ---- 0.5 % <0.5 10346.4 % 11585

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Sub-Matrix: WATER Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EG005C: Leachable Metals by ICPAES (QCLot: 2206683)

EG005C: Arsenic 7440-38-2 0.1 mg/L <0.1 1121 mg/L 12389

EG005C: Cadmium 7440-43-9 0.05 mg/L <0.05 99.70.5 mg/L 12088

EG005C: Chromium 7440-47-3 0.1 mg/L <0.1 99.61 mg/L 11586

EG005C: Cobalt 7440-48-4 0.1 mg/L <0.1 92.81 mg/L 11687

EG005C: Copper 7440-50-8 0.1 mg/L <0.1 1111 mg/L 11787

EG005C: Iron 7439-89-6 0.1 mg/L <0.1 -------- --------

EG005C: Lead 7439-92-1 0.1 mg/L <0.1 95.71 mg/L 11785

EG005C: Manganese 7439-96-5 0.1 mg/L <0.1 92.91 mg/L 11783

EG005C: Nickel 7440-02-0 0.1 mg/L <0.1 98.41 mg/L 11690

EG005C: Selenium 7782-49-2 0.05 mg/L <0.05 -------- --------

EG005C: Vanadium 7440-62-2 0.1 mg/L <0.1 1011 mg/L 11288

EG005C: Zinc 7440-66-6 0.1 mg/L <0.1 94.01 mg/L 12287

EG005C: Leachable Metals by ICPAES (QCLot: 2209660)

EG005C: Arsenic 7440-38-2 0.1 mg/L <0.1 1161 mg/L 12389

EG005C: Cadmium 7440-43-9 0.05 mg/L <0.05 1110.5 mg/L 12088

EG005C: Chromium 7440-47-3 0.1 mg/L <0.1 1091 mg/L 11586

EG005C: Cobalt 7440-48-4 0.1 mg/L <0.1 1071 mg/L 11687

EG005C: Copper 7440-50-8 0.1 mg/L <0.1 1141 mg/L 11787

EG005C: Iron 7439-89-6 0.1 mg/L <0.1 -------- --------

EG005C: Lead 7439-92-1 0.1 mg/L <0.1 1041 mg/L 11785

EG005C: Manganese 7439-96-5 0.1 mg/L <0.1 1041 mg/L 11783

EG005C: Nickel 7440-02-0 0.1 mg/L <0.1 1091 mg/L 11690

EG005C: Selenium 7782-49-2 0.05 mg/L <0.05 -------- --------

EG005C: Vanadium 7440-62-2 0.1 mg/L <0.1 1081 mg/L 11288

EG005C: Zinc 7440-66-6 0.1 mg/L <0.5 1091 mg/L 12287

EG020C: Leachable Metals by ICPMS (QCLot: 2206681)

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.1 # 1.340.5 mg/L 11783

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 # 1.160.1 mg/L 11387

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 # 1.080.1 mg/L 10987

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 # 0.8950.1 mg/L 11989

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.01 # 1.900.1 mg/L 11686

EG020A-C: Copper 7440-50-8 0.01 mg/L # 0.37 # 0.8520.2 mg/L 11983

EG020A-C: Lithium 7439-93-2 0.001 mg/L <0.001 -------- --------

EG020A-C: Manganese 7439-96-5 0.01 mg/L <0.01 # 0.2680.1 mg/L 11387

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.01 # 3.040.1 mg/L 11285

EG020A-C: Lead 7439-92-1 0.01 mg/L # 0.02 # 0.5040.1 mg/L 11088

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 # 0.9830.1 mg/L 11079

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 # 1.230.1 mg/L 11580

EG020A-C: Zinc 7440-66-6 0.1 mg/L # 0.2 # 2.180.2 mg/L 11489

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Sub-Matrix: WATER Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EG020C: Leachable Metals by ICPMS (QCLot: 2206681) - continued

EG020A-C: Iron 7439-89-6 0.05 mg/L <0.05 # 2.560.5 mg/L 11995

EG020C: Leachable Metals by ICPMS (QCLot: 2206682)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 -------- --------

EG020B-C: Uranium 7440-61-1 0.001 mg/L <0.001 -------- --------

EG020C: Leachable Metals by ICPMS (QCLot: 2209661)

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.5 # 4460.5 mg/L 11783

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.026 # 5100.1 mg/L 11387

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.005 # 4890.1 mg/L 10987

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.05 # 4520.1 mg/L 11989

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.05 # 4850.1 mg/L 11686

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.05 # 4640.2 mg/L 11983

EG020A-C: Lithium 7439-93-2 0.001 mg/L <0.005 -------- --------

EG020A-C: Manganese 7439-96-5 0.01 mg/L <0.05 # 4660.1 mg/L 11387

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.05 # 4820.1 mg/L 11285

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.05 # 4700.1 mg/L 11088

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.05 # 4700.1 mg/L 11079

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.05 # 4970.1 mg/L 11580

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.5 # 4330.2 mg/L 11489

EG020A-C: Iron 7439-89-6 0.05 mg/L <0.26 # 4950.5 mg/L 11995

EG020C: Leachable Metals by ICPMS (QCLot: 2209662)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.005 -------- --------

EG020B-C: Uranium 7440-61-1 0.001 mg/L <0.005 -------- --------

EG020C: Leachable Metals by ICPMS (QCLot: 2219445)

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.1 99.50.5 mg/L 11783

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 1060.1 mg/L 11387

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 98.80.1 mg/L 10987

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 1010.1 mg/L 11989

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.01 1010.1 mg/L 11686

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 94.50.2 mg/L 11983

EG020A-C: Lithium 7439-93-2 0.001 mg/L <0.001 -------- --------

EG020A-C: Manganese 7439-96-5 0.01 mg/L <0.01 98.40.1 mg/L 11387

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.01 95.20.1 mg/L 11285

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 98.20.1 mg/L 11088

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 # 1270.1 mg/L 11079

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 1010.1 mg/L 11580

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.1 98.50.2 mg/L 11489

EG020A-C: Iron 7439-89-6 0.05 mg/L <0.05 1000.5 mg/L 11995

EG020C: Leachable Metals by ICPMS (QCLot: 2219446)

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Sub-Matrix: WATER Method Blank (MB)

Report

Laboratory Control Spike (LCS) Report

Spike Spike Recovery (%) Recovery Limits (%)

Result Concentration HighLowLCSMethod: Compound CAS Number LOR Unit

EG020C: Leachable Metals by ICPMS (QCLot: 2219446) - continued

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 -------- --------

EG020B-C: Uranium 7440-61-1 0.001 mg/L <0.001 -------- --------

EG020C: Leachable Metals by ICPMS (QCLot: 2219447)

EG020A-C: Aluminium 7429-90-5 0.1 mg/L <0.1 98.10.5 mg/L 11783

EG020A-C: Arsenic 7440-38-2 0.005 mg/L <0.005 1090.1 mg/L 11387

EG020A-C: Cadmium 7440-43-9 0.001 mg/L <0.001 99.20.1 mg/L 10987

EG020A-C: Cobalt 7440-48-4 0.01 mg/L <0.01 98.80.1 mg/L 11989

EG020A-C: Chromium 7440-47-3 0.01 mg/L <0.01 99.70.1 mg/L 11686

EG020A-C: Copper 7440-50-8 0.01 mg/L <0.01 90.90.2 mg/L 11983

EG020A-C: Lithium 7439-93-2 0.001 mg/L <0.001 -------- --------

EG020A-C: Manganese 7439-96-5 0.01 mg/L <0.01 99.40.1 mg/L 11387

EG020A-C: Nickel 7440-02-0 0.01 mg/L <0.01 93.80.1 mg/L 11285

EG020A-C: Lead 7439-92-1 0.01 mg/L <0.01 98.90.1 mg/L 11088

EG020A-C: Selenium 7782-49-2 0.01 mg/L <0.01 1100.1 mg/L 11079

EG020A-C: Vanadium 7440-62-2 0.01 mg/L <0.01 1000.1 mg/L 11580

EG020A-C: Zinc 7440-66-6 0.1 mg/L <0.1 97.40.2 mg/L 11489

EG020A-C: Iron 7439-89-6 0.05 mg/L <0.05 1020.5 mg/L 11995

EG020C: Leachable Metals by ICPMS (QCLot: 2219448)

EG020B-C: Thorium 7440-29-1 0.001 mg/L <0.001 -------- --------

EG020B-C: Uranium 7440-61-1 0.001 mg/L <0.001 -------- --------

Matrix Spike (MS) ReportThe quality control term Matrix Spike (MS) refers to an intralaboratory split sample spiked with a representative set of target analytes. The purpose of this QC parameter is to monitor potential matrix effects on

analyte recoveries. Static Recovery Limits as per laboratory Data Quality Objectives (DQOs). Ideal recovery ranges stated may be waived in the event of sample matrix interference.

Sub-Matrix: SOIL Matrix Spike (MS) Report

SpikeRecovery(%) Recovery Limits (%)Spike

HighLowMSConcentrationLaboratory sample ID Client sample ID Method: Compound CAS Number

EG005T: Total Metals by ICP-AES (QCLot: 2198403)

ASS 1 1.5 EB1904386-004 7440-38-2EG005T: Arsenic 83.450 mg/kg 13070

7440-43-9EG005T: Cadmium 82.125 mg/kg 13070

7440-47-3EG005T: Chromium 84.350 mg/kg 13070

7440-48-4EG005T: Cobalt 93.750 mg/kg 13070

7440-50-8EG005T: Copper 96.150 mg/kg 13070

7439-92-1EG005T: Lead 84.950 mg/kg 13070

7439-96-5EG005T: Manganese # Not

Determined

50 mg/kg 13070

7440-02-0EG005T: Nickel 82.350 mg/kg 13070

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Sub-Matrix: SOIL Matrix Spike (MS) Report

SpikeRecovery(%) Recovery Limits (%)Spike

HighLowMSConcentrationLaboratory sample ID Client sample ID Method: Compound CAS Number

EG005T: Total Metals by ICP-AES (QCLot: 2198403) - continued

ASS 1 1.5 EB1904386-004 7440-62-2EG005T: Vanadium 83.850 mg/kg 13070

7440-66-6EG005T: Zinc 83.950 mg/kg 13070

EP004: Organic Matter (QCLot: 2200539)

ASS 1 1.5 EB1904386-004 ----EP004: Organic Matter 88.92.667 % 13070

----EP004: Total Organic Carbon 88.81.547 % 13070

Sub-Matrix: WATER Matrix Spike (MS) Report

SpikeRecovery(%) Recovery Limits (%)Spike

HighLowMSConcentrationLaboratory sample ID Client sample ID Method: Compound CAS Number

EG005C: Leachable Metals by ICPAES (QCLot: 2206683)

ASS 1 1.5 EB1904386-004 7440-38-2EG005C: Arsenic 1051 mg/L 13070

7440-43-9EG005C: Cadmium 92.00.5 mg/L 13070

7440-47-3EG005C: Chromium 94.11 mg/L 13070

7440-48-4EG005C: Cobalt 85.51 mg/L 13070

7440-50-8EG005C: Copper 1041 mg/L 13070

7439-92-1EG005C: Lead 88.91 mg/L 13070

7439-96-5EG005C: Manganese 88.31 mg/L 13070

7440-02-0EG005C: Nickel 93.41 mg/L 13070

7440-62-2EG005C: Vanadium 96.51 mg/L 13070

7440-66-6EG005C: Zinc 91.81 mg/L 13070

EG005C: Leachable Metals by ICPAES (QCLot: 2209660)

ASS 2 0.00-0.25 ASLP @ pH 9.0EB1904386-028 7440-38-2EG005C: Arsenic 1141 mg/L 13070

7440-43-9EG005C: Cadmium 1110.5 mg/L 13070

7440-47-3EG005C: Chromium 1101 mg/L 13070

7440-48-4EG005C: Cobalt 1081 mg/L 13070

7440-50-8EG005C: Copper 1171 mg/L 13070

7439-92-1EG005C: Lead 1061 mg/L 13070

7439-96-5EG005C: Manganese 1091 mg/L 13070

7440-02-0EG005C: Nickel 1101 mg/L 13070

7440-62-2EG005C: Vanadium 1131 mg/L 13070

7440-66-6EG005C: Zinc 1071 mg/L 13070

EG020C: Leachable Metals by ICPMS (QCLot: 2206681)

ASS 1 1.5 EB1904386-004 7440-38-2EG020A-C: Arsenic 1121 mg/L 13070

7440-43-9EG020A-C: Cadmium 1030.5 mg/L 13070

7440-48-4EG020A-C: Cobalt 1031 mg/L 13070

7440-47-3EG020A-C: Chromium 1081 mg/L 13070

7440-50-8EG020A-C: Copper 1011 mg/L 13070

7439-96-5EG020A-C: Manganese 1031 mg/L 13070

7440-02-0EG020A-C: Nickel 1041 mg/L 13070

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Sub-Matrix: WATER Matrix Spike (MS) Report

SpikeRecovery(%) Recovery Limits (%)Spike

HighLowMSConcentrationLaboratory sample ID Client sample ID Method: Compound CAS Number

EG020C: Leachable Metals by ICPMS (QCLot: 2206681) - continued

ASS 1 1.5 EB1904386-004 7439-92-1EG020A-C: Lead 1101 mg/L 13070

7440-62-2EG020A-C: Vanadium 1131 mg/L 13070

7440-66-6EG020A-C: Zinc 1031 mg/L 13070

EG020C: Leachable Metals by ICPMS (QCLot: 2209661)

ASS 2 1.0 ASLP @ pH 9.0EB1904386-029 7440-38-2EG020A-C: Arsenic # 5111 mg/L 13070

7440-43-9EG020A-C: Cadmium # 4830.5 mg/L 13070

7440-48-4EG020A-C: Cobalt # 4761 mg/L 13070

7440-47-3EG020A-C: Chromium # 5161 mg/L 13070

7440-50-8EG020A-C: Copper # 4911 mg/L 13070

7439-96-5EG020A-C: Manganese # 4811 mg/L 13070

7440-02-0EG020A-C: Nickel # 4771 mg/L 13070

7439-92-1EG020A-C: Lead # 5181 mg/L 13070

7440-62-2EG020A-C: Vanadium # 5251 mg/L 13070

7440-66-6EG020A-C: Zinc # 4131 mg/L 13070

EG020C: Leachable Metals by ICPMS (QCLot: 2219445)

ASS 1 1.5 ASLP @ pH 4.0EB1904386-042 7440-38-2EG020A-C: Arsenic 1181 mg/L 13070

7440-43-9EG020A-C: Cadmium 98.00.5 mg/L 13070

7440-48-4EG020A-C: Cobalt 90.31 mg/L 13070

7440-47-3EG020A-C: Chromium 95.71 mg/L 13070

7440-50-8EG020A-C: Copper 84.21 mg/L 13070

7439-96-5EG020A-C: Manganese 90.21 mg/L 13070

7440-02-0EG020A-C: Nickel 91.71 mg/L 13070

7439-92-1EG020A-C: Lead 86.81 mg/L 13070

7440-62-2EG020A-C: Vanadium 97.51 mg/L 13070

7440-66-6EG020A-C: Zinc 93.91 mg/L 13070

EG020C: Leachable Metals by ICPMS (QCLot: 2219447)

ASS 1 1.5 ASLP @ pH 7.0EB1904386-057 7440-38-2EG020A-C: Arsenic 1071 mg/L 13070

7440-43-9EG020A-C: Cadmium 94.90.5 mg/L 13070

7440-48-4EG020A-C: Cobalt 86.21 mg/L 13070

7440-47-3EG020A-C: Chromium 91.51 mg/L 13070

7440-50-8EG020A-C: Copper 79.21 mg/L 13070

7439-96-5EG020A-C: Manganese 87.21 mg/L 13070

7440-02-0EG020A-C: Nickel 85.91 mg/L 13070

7439-92-1EG020A-C: Lead 86.31 mg/L 13070

7440-62-2EG020A-C: Vanadium 94.21 mg/L 13070

7440-66-6EG020A-C: Zinc 88.41 mg/L 13070